{{ "language": "Solidity", "sources": { "contracts/mocks/adapters/MockGenericAdapter.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"../../release/extensions/integration-manager/integrations/utils/AdapterBase.sol\";\n\n/// @title IMockGenericIntegratee Interface\n/// @author Enzyme Council \ninterface IMockGenericIntegratee {\n function swap(\n address[] calldata,\n uint256[] calldata,\n address[] calldata,\n uint256[] calldata\n ) external payable;\n\n function swapOnBehalf(\n address payable,\n address[] calldata,\n uint256[] calldata,\n address[] calldata,\n uint256[] calldata\n ) external payable;\n}\n\n/// @title MockGenericAdapter Contract\n/// @author Enzyme Council \n/// @notice Provides a generic adapter that:\n/// 1. Provides swapping functions that use various `SpendAssetsTransferType` values\n/// 2. Directly parses the _actual_ values to swap from provided call data (e.g., `actualIncomingAssetAmounts`)\n/// 3. Directly parses values needed by the IntegrationManager from provided call data (e.g., `minIncomingAssetAmounts`)\ncontract MockGenericAdapter is AdapterBase {\n address public immutable INTEGRATEE;\n\n // No need to specify the IntegrationManager\n constructor(address _integratee) public AdapterBase(address(0)) {\n INTEGRATEE = _integratee;\n }\n\n function identifier() external pure override returns (string memory) {\n return \"MOCK_GENERIC\";\n }\n\n function parseAssetsForMethod(bytes4 _selector, bytes calldata _callArgs)\n external\n view\n override\n returns (\n IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,\n address[] memory spendAssets_,\n uint256[] memory maxSpendAssetAmounts_,\n address[] memory incomingAssets_,\n uint256[] memory minIncomingAssetAmounts_\n )\n {\n (\n spendAssets_,\n maxSpendAssetAmounts_,\n ,\n incomingAssets_,\n minIncomingAssetAmounts_,\n\n ) = __decodeCallArgs(_callArgs);\n\n return (\n __getSpendAssetsHandleTypeForSelector(_selector),\n spendAssets_,\n maxSpendAssetAmounts_,\n incomingAssets_,\n minIncomingAssetAmounts_\n );\n }\n\n /// @dev Assumes SpendAssetsHandleType.Transfer unless otherwise specified\n function __getSpendAssetsHandleTypeForSelector(bytes4 _selector)\n private\n pure\n returns (IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_)\n {\n if (_selector == bytes4(keccak256(\"removeOnly(address,bytes,bytes)\"))) {\n return IIntegrationManager.SpendAssetsHandleType.Remove;\n }\n if (_selector == bytes4(keccak256(\"swapDirectFromVault(address,bytes,bytes)\"))) {\n return IIntegrationManager.SpendAssetsHandleType.None;\n }\n if (_selector == bytes4(keccak256(\"swapViaApproval(address,bytes,bytes)\"))) {\n return IIntegrationManager.SpendAssetsHandleType.Approve;\n }\n return IIntegrationManager.SpendAssetsHandleType.Transfer;\n }\n\n function removeOnly(\n address,\n bytes calldata,\n bytes calldata\n ) external {}\n\n function swapA(\n address _vaultProxy,\n bytes calldata _callArgs,\n bytes calldata _assetTransferArgs\n ) external fundAssetsTransferHandler(_vaultProxy, _assetTransferArgs) {\n __decodeCallArgsAndSwap(_callArgs);\n }\n\n function swapB(\n address _vaultProxy,\n bytes calldata _callArgs,\n bytes calldata _assetTransferArgs\n ) external fundAssetsTransferHandler(_vaultProxy, _assetTransferArgs) {\n __decodeCallArgsAndSwap(_callArgs);\n }\n\n function swapDirectFromVault(\n address _vaultProxy,\n bytes calldata _callArgs,\n bytes calldata\n ) external {\n (\n address[] memory spendAssets,\n ,\n uint256[] memory actualSpendAssetAmounts,\n address[] memory incomingAssets,\n ,\n uint256[] memory actualIncomingAssetAmounts\n ) = __decodeCallArgs(_callArgs);\n\n IMockGenericIntegratee(INTEGRATEE).swapOnBehalf(\n payable(_vaultProxy),\n spendAssets,\n actualSpendAssetAmounts,\n incomingAssets,\n actualIncomingAssetAmounts\n );\n }\n\n function swapViaApproval(\n address _vaultProxy,\n bytes calldata _callArgs,\n bytes calldata _assetTransferArgs\n ) external fundAssetsTransferHandler(_vaultProxy, _assetTransferArgs) {\n __decodeCallArgsAndSwap(_callArgs);\n }\n\n function __decodeCallArgs(bytes memory _callArgs)\n internal\n pure\n returns (\n address[] memory spendAssets_,\n uint256[] memory maxSpendAssetAmounts_,\n uint256[] memory actualSpendAssetAmounts_,\n address[] memory incomingAssets_,\n uint256[] memory minIncomingAssetAmounts_,\n uint256[] memory actualIncomingAssetAmounts_\n )\n {\n return\n abi.decode(\n _callArgs,\n (address[], uint256[], uint256[], address[], uint256[], uint256[])\n );\n }\n\n function __decodeCallArgsAndSwap(bytes memory _callArgs) internal {\n (\n address[] memory spendAssets,\n ,\n uint256[] memory actualSpendAssetAmounts,\n address[] memory incomingAssets,\n ,\n uint256[] memory actualIncomingAssetAmounts\n ) = __decodeCallArgs(_callArgs);\n\n for (uint256 i; i < spendAssets.length; i++) {\n ERC20(spendAssets[i]).approve(INTEGRATEE, actualSpendAssetAmounts[i]);\n }\n IMockGenericIntegratee(INTEGRATEE).swap(\n spendAssets,\n actualSpendAssetAmounts,\n incomingAssets,\n actualIncomingAssetAmounts\n );\n }\n}\n" }, "@openzeppelin/contracts/token/ERC20/ERC20.sol": { "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\nimport \"../../GSN/Context.sol\";\nimport \"./IERC20.sol\";\nimport \"../../math/SafeMath.sol\";\nimport \"../../utils/Address.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin guidelines: functions revert instead\n * of returning `false` on failure. This behavior is nonetheless conventional\n * and does not conflict with the expectations of ERC20 applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20 {\n using SafeMath for uint256;\n using Address for address;\n\n mapping (address => uint256) private _balances;\n\n mapping (address => mapping (address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n uint8 private _decimals;\n\n /**\n * @dev Sets the values for {name} and {symbol}, initializes {decimals} with\n * a default value of 18.\n *\n * To select a different value for {decimals}, use {_setupDecimals}.\n *\n * All three of these values are immutable: they can only be set once during\n * construction.\n */\n constructor (string memory name, string memory symbol) public {\n _name = name;\n _symbol = symbol;\n _decimals = 18;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5,05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is\n * called.\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view returns (uint8) {\n return _decimals;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `recipient` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address recipient, uint256 amount) public virtual override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n _approve(_msgSender(), spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20};\n *\n * Requirements:\n * - `sender` and `recipient` cannot be the zero address.\n * - `sender` must have a balance of at least `amount`.\n * - the caller must have allowance for ``sender``'s tokens of at least\n * `amount`.\n */\n function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {\n _transfer(sender, recipient, amount);\n _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, \"ERC20: transfer amount exceeds allowance\"));\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, \"ERC20: decreased allowance below zero\"));\n return true;\n }\n\n /**\n * @dev Moves tokens `amount` from `sender` to `recipient`.\n *\n * This is internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `sender` cannot be the zero address.\n * - `recipient` cannot be the zero address.\n * - `sender` must have a balance of at least `amount`.\n */\n function _transfer(address sender, address recipient, uint256 amount) internal virtual {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(sender, recipient, amount);\n\n _balances[sender] = _balances[sender].sub(amount, \"ERC20: transfer amount exceeds balance\");\n _balances[recipient] = _balances[recipient].add(amount);\n emit Transfer(sender, recipient, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements\n *\n * - `to` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply = _totalSupply.add(amount);\n _balances[account] = _balances[account].add(amount);\n emit Transfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n _balances[account] = _balances[account].sub(amount, \"ERC20: burn amount exceeds balance\");\n _totalSupply = _totalSupply.sub(amount);\n emit Transfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(address owner, address spender, uint256 amount) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Sets {decimals} to a value other than the default one of 18.\n *\n * WARNING: This function should only be called from the constructor. Most\n * applications that interact with token contracts will not expect\n * {decimals} to ever change, and may work incorrectly if it does.\n */\n function _setupDecimals(uint8 decimals_) internal {\n _decimals = decimals_;\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be to transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }\n}\n" }, "contracts/release/extensions/integration-manager/integrations/utils/AdapterBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/token/ERC20/SafeERC20.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"../IIntegrationAdapter.sol\";\nimport \"./IntegrationSelectors.sol\";\n\n/// @title AdapterBase Contract\n/// @author Enzyme Council \n/// @notice A base contract for integration adapters\nabstract contract AdapterBase is IIntegrationAdapter, IntegrationSelectors {\n using SafeERC20 for ERC20;\n\n address internal immutable INTEGRATION_MANAGER;\n\n /// @dev Provides a standard implementation for transferring assets between\n /// the fund's VaultProxy and the adapter, by wrapping the adapter action.\n /// This modifier should be implemented in almost all adapter actions, unless they\n /// do not move assets or can spend and receive assets directly with the VaultProxy\n modifier fundAssetsTransferHandler(\n address _vaultProxy,\n bytes memory _encodedAssetTransferArgs\n ) {\n (\n IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType,\n address[] memory spendAssets,\n uint256[] memory spendAssetAmounts,\n address[] memory incomingAssets\n ) = __decodeEncodedAssetTransferArgs(_encodedAssetTransferArgs);\n\n // Take custody of spend assets (if necessary)\n if (spendAssetsHandleType == IIntegrationManager.SpendAssetsHandleType.Approve) {\n for (uint256 i = 0; i < spendAssets.length; i++) {\n ERC20(spendAssets[i]).safeTransferFrom(\n _vaultProxy,\n address(this),\n spendAssetAmounts[i]\n );\n }\n }\n\n // Execute call\n _;\n\n // Transfer remaining assets back to the fund's VaultProxy\n __transferContractAssetBalancesToFund(_vaultProxy, incomingAssets);\n __transferContractAssetBalancesToFund(_vaultProxy, spendAssets);\n }\n\n modifier onlyIntegrationManager {\n require(\n msg.sender == INTEGRATION_MANAGER,\n \"Only the IntegrationManager can call this function\"\n );\n _;\n }\n\n constructor(address _integrationManager) public {\n INTEGRATION_MANAGER = _integrationManager;\n }\n\n // INTERNAL FUNCTIONS\n\n /// @dev Helper for adapters to approve their integratees with the max amount of an asset.\n /// Since everything is done atomically, and only the balances to-be-used are sent to adapters,\n /// there is no need to approve exact amounts on every call.\n function __approveMaxAsNeeded(\n address _asset,\n address _target,\n uint256 _neededAmount\n ) internal {\n if (ERC20(_asset).allowance(address(this), _target) < _neededAmount) {\n ERC20(_asset).approve(_target, type(uint256).max);\n }\n }\n\n /// @dev Helper to decode the _encodedAssetTransferArgs param passed to adapter call\n function __decodeEncodedAssetTransferArgs(bytes memory _encodedAssetTransferArgs)\n internal\n pure\n returns (\n IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,\n address[] memory spendAssets_,\n uint256[] memory spendAssetAmounts_,\n address[] memory incomingAssets_\n )\n {\n return\n abi.decode(\n _encodedAssetTransferArgs,\n (IIntegrationManager.SpendAssetsHandleType, address[], uint256[], address[])\n );\n }\n\n /// @dev Helper to transfer full contract balances of assets to the specified VaultProxy\n function __transferContractAssetBalancesToFund(address _vaultProxy, address[] memory _assets)\n private\n {\n for (uint256 i = 0; i < _assets.length; i++) {\n uint256 postCallAmount = ERC20(_assets[i]).balanceOf(address(this));\n if (postCallAmount > 0) {\n ERC20(_assets[i]).safeTransfer(_vaultProxy, postCallAmount);\n }\n }\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `INTEGRATION_MANAGER` variable\n /// @return integrationManager_ The `INTEGRATION_MANAGER` variable value\n function getIntegrationManager() external view returns (address integrationManager_) {\n return INTEGRATION_MANAGER;\n }\n}\n" }, "@openzeppelin/contracts/GSN/Context.sol": { "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\n/*\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with GSN meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address payable) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes memory) {\n this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\n return msg.data;\n }\n}\n" }, "@openzeppelin/contracts/token/ERC20/IERC20.sol": { "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `recipient`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address recipient, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `sender` to `recipient` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);\n\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n}\n" }, "@openzeppelin/contracts/math/SafeMath.sol": { "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\n/**\n * @dev Wrappers over Solidity's arithmetic operations with added overflow\n * checks.\n *\n * Arithmetic operations in Solidity wrap on overflow. This can easily result\n * in bugs, because programmers usually assume that an overflow raises an\n * error, which is the standard behavior in high level programming languages.\n * `SafeMath` restores this intuition by reverting the transaction when an\n * operation overflows.\n *\n * Using this library instead of the unchecked operations eliminates an entire\n * class of bugs, so it's recommended to use it always.\n */\nlibrary SafeMath {\n /**\n * @dev Returns the addition of two unsigned integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `+` operator.\n *\n * Requirements:\n *\n * - Addition cannot overflow.\n */\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n /**\n * @dev Returns the subtraction of two unsigned integers, reverting on\n * overflow (when the result is negative).\n *\n * Counterpart to Solidity's `-` operator.\n *\n * Requirements:\n *\n * - Subtraction cannot overflow.\n */\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n /**\n * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\n * overflow (when the result is negative).\n *\n * Counterpart to Solidity's `-` operator.\n *\n * Requirements:\n *\n * - Subtraction cannot overflow.\n */\n function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n uint256 c = a - b;\n\n return c;\n }\n\n /**\n * @dev Returns the multiplication of two unsigned integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `*` operator.\n *\n * Requirements:\n *\n * - Multiplication cannot overflow.\n */\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n // benefit is lost if 'b' is also tested.\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n /**\n * @dev Returns the integer division of two unsigned integers. Reverts on\n * division by zero. The result is rounded towards zero.\n *\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n * uses an invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n /**\n * @dev Returns the integer division of two unsigned integers. Reverts with custom message on\n * division by zero. The result is rounded towards zero.\n *\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n * uses an invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n uint256 c = a / b;\n // assert(a == b * c + a % b); // There is no case in which this doesn't hold\n\n return c;\n }\n\n /**\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n * Reverts when dividing by zero.\n *\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n * invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return mod(a, b, \"SafeMath: modulo by zero\");\n }\n\n /**\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n * Reverts with custom message when dividing by zero.\n *\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n * invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n require(b != 0, errorMessage);\n return a % b;\n }\n}\n" }, "@openzeppelin/contracts/utils/Address.sol": { "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.2;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies in extcodesize, which returns 0 for contracts in\n // construction, since the code is only stored at the end of the\n // constructor execution.\n\n uint256 size;\n // solhint-disable-next-line no-inline-assembly\n assembly { size := extcodesize(account) }\n return size > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n // solhint-disable-next-line avoid-low-level-calls, avoid-call-value\n (bool success, ) = recipient.call{ value: amount }(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain`call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {\n return _functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n return _functionCallWithValue(target, data, value, errorMessage);\n }\n\n function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {\n require(isContract(target), \"Address: call to non-contract\");\n\n // solhint-disable-next-line avoid-low-level-calls\n (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n\n // solhint-disable-next-line no-inline-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n" }, "@openzeppelin/contracts/token/ERC20/SafeERC20.sol": { "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\nimport \"./IERC20.sol\";\nimport \"../../math/SafeMath.sol\";\nimport \"../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n using SafeMath for uint256;\n using Address for address;\n\n function safeTransfer(IERC20 token, address to, uint256 value) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n }\n\n function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n }\n\n /**\n * @dev Deprecated. This function has issues similar to the ones found in\n * {IERC20-approve}, and its usage is discouraged.\n *\n * Whenever possible, use {safeIncreaseAllowance} and\n * {safeDecreaseAllowance} instead.\n */\n function safeApprove(IERC20 token, address spender, uint256 value) internal {\n // safeApprove should only be called when setting an initial allowance,\n // or when resetting it to zero. To increase and decrease it, use\n // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n // solhint-disable-next-line max-line-length\n require((value == 0) || (token.allowance(address(this), spender) == 0),\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n );\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n }\n\n function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n uint256 newAllowance = token.allowance(address(this), spender).add(value);\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n\n function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n uint256 newAllowance = token.allowance(address(this), spender).sub(value, \"SafeERC20: decreased allowance below zero\");\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n\n /**\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n * @param token The token targeted by the call.\n * @param data The call data (encoded using abi.encode or one of its variants).\n */\n function _callOptionalReturn(IERC20 token, bytes memory data) private {\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that\n // the target address contains contract code and also asserts for success in the low-level call.\n\n bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n if (returndata.length > 0) { // Return data is optional\n // solhint-disable-next-line max-line-length\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n }\n }\n}\n" }, "contracts/release/extensions/integration-manager/integrations/IIntegrationAdapter.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../IIntegrationManager.sol\";\n\n/// @title Integration Adapter interface\n/// @author Enzyme Council \n/// @notice Interface for all integration adapters\ninterface IIntegrationAdapter {\n function identifier() external pure returns (string memory identifier_);\n\n function parseAssetsForMethod(bytes4 _selector, bytes calldata _encodedCallArgs)\n external\n view\n returns (\n IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,\n address[] memory spendAssets_,\n uint256[] memory spendAssetAmounts_,\n address[] memory incomingAssets_,\n uint256[] memory minIncomingAssetAmounts_\n );\n}\n" }, "contracts/release/extensions/integration-manager/integrations/utils/IntegrationSelectors.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IntegrationSelectors Contract\n/// @author Enzyme Council \n/// @notice Selectors for integration actions\n/// @dev Selectors are created from their signatures rather than hardcoded for easy verification\nabstract contract IntegrationSelectors {\n bytes4 public constant ADD_TRACKED_ASSETS_SELECTOR = bytes4(\n keccak256(\"addTrackedAssets(address,bytes,bytes)\")\n );\n\n // Trading\n bytes4 public constant TAKE_ORDER_SELECTOR = bytes4(\n keccak256(\"takeOrder(address,bytes,bytes)\")\n );\n\n // Lending\n bytes4 public constant LEND_SELECTOR = bytes4(keccak256(\"lend(address,bytes,bytes)\"));\n bytes4 public constant REDEEM_SELECTOR = bytes4(keccak256(\"redeem(address,bytes,bytes)\"));\n}\n" }, "contracts/release/extensions/integration-manager/IIntegrationManager.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IIntegrationManager interface\n/// @author Enzyme Council \n/// @notice Interface for the IntegrationManager\ninterface IIntegrationManager {\n enum SpendAssetsHandleType {None, Approve, Transfer, Remove}\n}\n" }, "contracts/release/extensions/integration-manager/integrations/adapters/ZeroExV2Adapter.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../../../interfaces/IZeroExV2.sol\";\nimport \"../../../../utils/MathHelpers.sol\";\nimport \"../../../../utils/AddressArrayLib.sol\";\nimport \"../../../utils/FundDeployerOwnerMixin.sol\";\nimport \"../utils/AdapterBase.sol\";\n\n/// @title ZeroExV2Adapter Contract\n/// @author Enzyme Council \n/// @notice Adapter to 0xV2 Exchange Contract\ncontract ZeroExV2Adapter is AdapterBase, FundDeployerOwnerMixin, MathHelpers {\n using AddressArrayLib for address[];\n using SafeMath for uint256;\n\n event AllowedMakerAdded(address indexed account);\n\n event AllowedMakerRemoved(address indexed account);\n\n address private immutable EXCHANGE;\n mapping(address => bool) private makerToIsAllowed;\n\n // Gas could be optimized for the end-user by also storing an immutable ZRX_ASSET_DATA,\n // for example, but in the narrow OTC use-case of this adapter, taker fees are unlikely.\n constructor(\n address _integrationManager,\n address _exchange,\n address _fundDeployer,\n address[] memory _allowedMakers\n ) public AdapterBase(_integrationManager) FundDeployerOwnerMixin(_fundDeployer) {\n EXCHANGE = _exchange;\n if (_allowedMakers.length > 0) {\n __addAllowedMakers(_allowedMakers);\n }\n }\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Provides a constant string identifier for an adapter\n /// @return identifier_ The identifer string\n function identifier() external pure override returns (string memory identifier_) {\n return \"ZERO_EX_V2\";\n }\n\n /// @notice Parses the expected assets to receive from a call on integration\n /// @param _selector The function selector for the callOnIntegration\n /// @param _encodedCallArgs The encoded parameters for the callOnIntegration\n /// @return spendAssetsHandleType_ A type that dictates how to handle granting\n /// the adapter access to spend assets (`None` by default)\n /// @return spendAssets_ The assets to spend in the call\n /// @return spendAssetAmounts_ The max asset amounts to spend in the call\n /// @return incomingAssets_ The assets to receive in the call\n /// @return minIncomingAssetAmounts_ The min asset amounts to receive in the call\n function parseAssetsForMethod(bytes4 _selector, bytes calldata _encodedCallArgs)\n external\n view\n override\n returns (\n IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,\n address[] memory spendAssets_,\n uint256[] memory spendAssetAmounts_,\n address[] memory incomingAssets_,\n uint256[] memory minIncomingAssetAmounts_\n )\n {\n require(_selector == TAKE_ORDER_SELECTOR, \"parseAssetsForMethod: _selector invalid\");\n\n (\n bytes memory encodedZeroExOrderArgs,\n uint256 takerAssetFillAmount\n ) = __decodeTakeOrderCallArgs(_encodedCallArgs);\n IZeroExV2.Order memory order = __constructOrderStruct(encodedZeroExOrderArgs);\n\n require(\n isAllowedMaker(order.makerAddress),\n \"parseAssetsForMethod: Order maker is not allowed\"\n );\n require(\n takerAssetFillAmount <= order.takerAssetAmount,\n \"parseAssetsForMethod: Taker asset fill amount greater than available\"\n );\n\n address makerAsset = __getAssetAddress(order.makerAssetData);\n address takerAsset = __getAssetAddress(order.takerAssetData);\n\n // Format incoming assets\n incomingAssets_ = new address[](1);\n incomingAssets_[0] = makerAsset;\n minIncomingAssetAmounts_ = new uint256[](1);\n minIncomingAssetAmounts_[0] = __calcRelativeQuantity(\n order.takerAssetAmount,\n order.makerAssetAmount,\n takerAssetFillAmount\n );\n\n if (order.takerFee > 0) {\n address takerFeeAsset = __getAssetAddress(IZeroExV2(EXCHANGE).ZRX_ASSET_DATA());\n uint256 takerFeeFillAmount = __calcRelativeQuantity(\n order.takerAssetAmount,\n order.takerFee,\n takerAssetFillAmount\n ); // fee calculated relative to taker fill amount\n\n if (takerFeeAsset == makerAsset) {\n require(\n order.takerFee < order.makerAssetAmount,\n \"parseAssetsForMethod: Fee greater than makerAssetAmount\"\n );\n\n spendAssets_ = new address[](1);\n spendAssets_[0] = takerAsset;\n\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = takerAssetFillAmount;\n\n minIncomingAssetAmounts_[0] = minIncomingAssetAmounts_[0].sub(takerFeeFillAmount);\n } else if (takerFeeAsset == takerAsset) {\n spendAssets_ = new address[](1);\n spendAssets_[0] = takerAsset;\n\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = takerAssetFillAmount.add(takerFeeFillAmount);\n } else {\n spendAssets_ = new address[](2);\n spendAssets_[0] = takerAsset;\n spendAssets_[1] = takerFeeAsset;\n\n spendAssetAmounts_ = new uint256[](2);\n spendAssetAmounts_[0] = takerAssetFillAmount;\n spendAssetAmounts_[1] = takerFeeFillAmount;\n }\n } else {\n spendAssets_ = new address[](1);\n spendAssets_[0] = takerAsset;\n\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = takerAssetFillAmount;\n }\n\n return (\n IIntegrationManager.SpendAssetsHandleType.Transfer,\n spendAssets_,\n spendAssetAmounts_,\n incomingAssets_,\n minIncomingAssetAmounts_\n );\n }\n\n /// @notice Take an order on 0x\n /// @param _vaultProxy The VaultProxy of the calling fund\n /// @param _encodedCallArgs Encoded order parameters\n /// @param _encodedAssetTransferArgs Encoded args for expected assets to spend and receive\n function takeOrder(\n address _vaultProxy,\n bytes calldata _encodedCallArgs,\n bytes calldata _encodedAssetTransferArgs\n )\n external\n onlyIntegrationManager\n fundAssetsTransferHandler(_vaultProxy, _encodedAssetTransferArgs)\n {\n (\n bytes memory encodedZeroExOrderArgs,\n uint256 takerAssetFillAmount\n ) = __decodeTakeOrderCallArgs(_encodedCallArgs);\n IZeroExV2.Order memory order = __constructOrderStruct(encodedZeroExOrderArgs);\n\n // Approve spend assets as needed\n __approveMaxAsNeeded(\n __getAssetAddress(order.takerAssetData),\n __getAssetProxy(order.takerAssetData),\n takerAssetFillAmount\n );\n // Ignores whether makerAsset or takerAsset overlap with the takerFee asset for simplicity\n if (order.takerFee > 0) {\n bytes memory zrxData = IZeroExV2(EXCHANGE).ZRX_ASSET_DATA();\n __approveMaxAsNeeded(\n __getAssetAddress(zrxData),\n __getAssetProxy(zrxData),\n __calcRelativeQuantity(\n order.takerAssetAmount,\n order.takerFee,\n takerAssetFillAmount\n ) // fee calculated relative to taker fill amount\n );\n }\n\n // Execute order\n (, , , bytes memory signature) = __decodeZeroExOrderArgs(encodedZeroExOrderArgs);\n IZeroExV2(EXCHANGE).fillOrder(order, takerAssetFillAmount, signature);\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Parses user inputs into a ZeroExV2.Order format\n function __constructOrderStruct(bytes memory _encodedOrderArgs)\n private\n pure\n returns (IZeroExV2.Order memory order_)\n {\n (\n address[4] memory orderAddresses,\n uint256[6] memory orderValues,\n bytes[2] memory orderData,\n\n ) = __decodeZeroExOrderArgs(_encodedOrderArgs);\n\n return\n IZeroExV2.Order({\n makerAddress: orderAddresses[0],\n takerAddress: orderAddresses[1],\n feeRecipientAddress: orderAddresses[2],\n senderAddress: orderAddresses[3],\n makerAssetAmount: orderValues[0],\n takerAssetAmount: orderValues[1],\n makerFee: orderValues[2],\n takerFee: orderValues[3],\n expirationTimeSeconds: orderValues[4],\n salt: orderValues[5],\n makerAssetData: orderData[0],\n takerAssetData: orderData[1]\n });\n }\n\n /// @dev Decode the parameters of a takeOrder call\n /// @param _encodedCallArgs Encoded parameters passed from client side\n /// @return encodedZeroExOrderArgs_ Encoded args of the 0x order\n /// @return takerAssetFillAmount_ Amount of taker asset to fill\n function __decodeTakeOrderCallArgs(bytes memory _encodedCallArgs)\n private\n pure\n returns (bytes memory encodedZeroExOrderArgs_, uint256 takerAssetFillAmount_)\n {\n return abi.decode(_encodedCallArgs, (bytes, uint256));\n }\n\n /// @dev Decode the parameters of a 0x order\n /// @param _encodedZeroExOrderArgs Encoded parameters of the 0x order\n /// @return orderAddresses_ Addresses used in the order\n /// - [0] 0x Order param: makerAddress\n /// - [1] 0x Order param: takerAddress\n /// - [2] 0x Order param: feeRecipientAddress\n /// - [3] 0x Order param: senderAddress\n /// @return orderValues_ Values used in the order\n /// - [0] 0x Order param: makerAssetAmount\n /// - [1] 0x Order param: takerAssetAmount\n /// - [2] 0x Order param: makerFee\n /// - [3] 0x Order param: takerFee\n /// - [4] 0x Order param: expirationTimeSeconds\n /// - [5] 0x Order param: salt\n /// @return orderData_ Bytes data used in the order\n /// - [0] 0x Order param: makerAssetData\n /// - [1] 0x Order param: takerAssetData\n /// @return signature_ Signature of the order\n function __decodeZeroExOrderArgs(bytes memory _encodedZeroExOrderArgs)\n private\n pure\n returns (\n address[4] memory orderAddresses_,\n uint256[6] memory orderValues_,\n bytes[2] memory orderData_,\n bytes memory signature_\n )\n {\n return abi.decode(_encodedZeroExOrderArgs, (address[4], uint256[6], bytes[2], bytes));\n }\n\n /// @dev Parses the asset address from 0x assetData\n function __getAssetAddress(bytes memory _assetData)\n private\n pure\n returns (address assetAddress_)\n {\n assembly {\n assetAddress_ := mload(add(_assetData, 36))\n }\n }\n\n /// @dev Gets the 0x assetProxy address for an ERC20 token\n function __getAssetProxy(bytes memory _assetData) private view returns (address assetProxy_) {\n bytes4 assetProxyId;\n\n assembly {\n assetProxyId := and(\n mload(add(_assetData, 32)),\n 0xFFFFFFFF00000000000000000000000000000000000000000000000000000000\n )\n }\n assetProxy_ = IZeroExV2(EXCHANGE).getAssetProxy(assetProxyId);\n }\n\n /////////////////////////////\n // ALLOWED MAKERS REGISTRY //\n /////////////////////////////\n\n /// @notice Adds accounts to the list of allowed 0x order makers\n /// @param _accountsToAdd Accounts to add\n function addAllowedMakers(address[] calldata _accountsToAdd) external onlyFundDeployerOwner {\n __addAllowedMakers(_accountsToAdd);\n }\n\n /// @notice Removes accounts from the list of allowed 0x order makers\n /// @param _accountsToRemove Accounts to remove\n function removeAllowedMakers(address[] calldata _accountsToRemove)\n external\n onlyFundDeployerOwner\n {\n require(_accountsToRemove.length > 0, \"removeAllowedMakers: Empty _accountsToRemove\");\n\n for (uint256 i; i < _accountsToRemove.length; i++) {\n require(\n isAllowedMaker(_accountsToRemove[i]),\n \"removeAllowedMakers: Account is not an allowed maker\"\n );\n\n makerToIsAllowed[_accountsToRemove[i]] = false;\n\n emit AllowedMakerRemoved(_accountsToRemove[i]);\n }\n }\n\n /// @dev Helper to add accounts to the list of allowed makers\n function __addAllowedMakers(address[] memory _accountsToAdd) private {\n require(_accountsToAdd.length > 0, \"__addAllowedMakers: Empty _accountsToAdd\");\n\n for (uint256 i; i < _accountsToAdd.length; i++) {\n require(!isAllowedMaker(_accountsToAdd[i]), \"__addAllowedMakers: Value already set\");\n\n makerToIsAllowed[_accountsToAdd[i]] = true;\n\n emit AllowedMakerAdded(_accountsToAdd[i]);\n }\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `EXCHANGE` variable value\n /// @return exchange_ The `EXCHANGE` variable value\n function getExchange() external view returns (address exchange_) {\n return EXCHANGE;\n }\n\n /// @notice Checks whether an account is an allowed maker of 0x orders\n /// @param _who The account to check\n /// @return isAllowedMaker_ True if _who is an allowed maker\n function isAllowedMaker(address _who) public view returns (bool isAllowedMaker_) {\n return makerToIsAllowed[_who];\n }\n}\n" }, "contracts/release/interfaces/IZeroExV2.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\n/// @dev Minimal interface for our interactions with the ZeroEx Exchange contract\ninterface IZeroExV2 {\n struct Order {\n address makerAddress;\n address takerAddress;\n address feeRecipientAddress;\n address senderAddress;\n uint256 makerAssetAmount;\n uint256 takerAssetAmount;\n uint256 makerFee;\n uint256 takerFee;\n uint256 expirationTimeSeconds;\n uint256 salt;\n bytes makerAssetData;\n bytes takerAssetData;\n }\n\n struct OrderInfo {\n uint8 orderStatus;\n bytes32 orderHash;\n uint256 orderTakerAssetFilledAmount;\n }\n\n struct FillResults {\n uint256 makerAssetFilledAmount;\n uint256 takerAssetFilledAmount;\n uint256 makerFeePaid;\n uint256 takerFeePaid;\n }\n\n function ZRX_ASSET_DATA() external view returns (bytes memory);\n\n function filled(bytes32) external view returns (uint256);\n\n function cancelled(bytes32) external view returns (bool);\n\n function getOrderInfo(Order calldata) external view returns (OrderInfo memory);\n\n function getAssetProxy(bytes4) external view returns (address);\n\n function isValidSignature(\n bytes32,\n address,\n bytes calldata\n ) external view returns (bool);\n\n function preSign(\n bytes32,\n address,\n bytes calldata\n ) external;\n\n function cancelOrder(Order calldata) external;\n\n function fillOrder(\n Order calldata,\n uint256,\n bytes calldata\n ) external returns (FillResults memory);\n}\n" }, "contracts/release/utils/MathHelpers.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\n\n/// @title MathHelpers Contract\n/// @author Enzyme Council \n/// @notice Helper functions for common math operations\nabstract contract MathHelpers {\n using SafeMath for uint256;\n\n /// @dev Calculates a proportional value relative to a known ratio\n function __calcRelativeQuantity(\n uint256 _quantity1,\n uint256 _quantity2,\n uint256 _relativeQuantity1\n ) internal pure returns (uint256 relativeQuantity2_) {\n return _relativeQuantity1.mul(_quantity2).div(_quantity1);\n }\n\n /// @dev Calculates a rate normalized to 10^18 precision,\n /// for given base and quote asset decimals and amounts\n function __calcNormalizedRate(\n uint256 _baseAssetDecimals,\n uint256 _baseAssetAmount,\n uint256 _quoteAssetDecimals,\n uint256 _quoteAssetAmount\n ) internal pure returns (uint256 normalizedRate_) {\n return\n _quoteAssetAmount.mul(10**_baseAssetDecimals.add(18)).div(\n _baseAssetAmount.mul(10**_quoteAssetDecimals)\n );\n }\n}\n" }, "contracts/release/utils/AddressArrayLib.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title AddressArray Library\n/// @author Enzyme Council \n/// @notice A library to extend the address array data type\nlibrary AddressArrayLib {\n /// @dev Helper to verify if an array contains a particular value\n function contains(address[] memory _self, address _target)\n internal\n pure\n returns (bool doesContain_)\n {\n for (uint256 i; i < _self.length; i++) {\n if (_target == _self[i]) {\n return true;\n }\n }\n return false;\n }\n\n /// @dev Helper to verify if array is a set of unique values.\n /// Does not assert length > 0.\n function isUniqueSet(address[] memory _self) internal pure returns (bool isUnique_) {\n if (_self.length <= 1) {\n return true;\n }\n\n uint256 arrayLength = _self.length;\n for (uint256 i; i < arrayLength; i++) {\n for (uint256 j = i + 1; j < arrayLength; j++) {\n if (_self[i] == _self[j]) {\n return false;\n }\n }\n }\n\n return true;\n }\n\n /// @dev Helper to remove items from an array. Removes all matching occurrences of each item.\n /// Does not assert uniqueness of either array.\n function removeItems(address[] memory _self, address[] memory _itemsToRemove)\n internal\n pure\n returns (address[] memory nextArray_)\n {\n if (_itemsToRemove.length == 0) {\n return _self;\n }\n\n bool[] memory indexesToRemove = new bool[](_self.length);\n uint256 remainingItemsCount = _self.length;\n for (uint256 i; i < _self.length; i++) {\n if (contains(_itemsToRemove, _self[i])) {\n indexesToRemove[i] = true;\n remainingItemsCount--;\n }\n }\n\n if (remainingItemsCount == _self.length) {\n nextArray_ = _self;\n } else if (remainingItemsCount > 0) {\n nextArray_ = new address[](remainingItemsCount);\n uint256 nextArrayIndex;\n for (uint256 i; i < _self.length; i++) {\n if (!indexesToRemove[i]) {\n nextArray_[nextArrayIndex] = _self[i];\n nextArrayIndex++;\n }\n }\n }\n\n return nextArray_;\n }\n}\n" }, "contracts/release/extensions/utils/FundDeployerOwnerMixin.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../core/fund-deployer/IFundDeployer.sol\";\n\n/// @title FundDeployerOwnerMixin Contract\n/// @author Enzyme Council \n/// @notice A mixin contract that defers ownership to the owner of FundDeployer\nabstract contract FundDeployerOwnerMixin {\n address internal immutable FUND_DEPLOYER;\n\n modifier onlyFundDeployerOwner() {\n require(\n msg.sender == getOwner(),\n \"onlyFundDeployerOwner: Only the FundDeployer owner can call this function\"\n );\n _;\n }\n\n constructor(address _fundDeployer) public {\n FUND_DEPLOYER = _fundDeployer;\n }\n\n /// @notice Gets the owner of this contract\n /// @return owner_ The owner\n /// @dev Ownership is deferred to the owner of the FundDeployer contract\n function getOwner() public view returns (address owner_) {\n return IFundDeployer(FUND_DEPLOYER).getOwner();\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `FUND_DEPLOYER` variable\n /// @return fundDeployer_ The `FUND_DEPLOYER` variable value\n function getFundDeployer() external view returns (address fundDeployer_) {\n return FUND_DEPLOYER;\n }\n}\n" }, "contracts/release/core/fund-deployer/IFundDeployer.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IFundDeployer Interface\n/// @author Enzyme Council \ninterface IFundDeployer {\n enum ReleaseStatus {PreLaunch, Live, Paused}\n\n function getOwner() external view returns (address);\n\n function getReleaseStatus() external view returns (ReleaseStatus);\n\n function isRegisteredVaultCall(address, bytes4) external view returns (bool);\n}\n" }, "contracts/release/extensions/policy-manager/PolicyManager.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts/utils/EnumerableSet.sol\";\nimport \"../../core/fund/vault/IVault.sol\";\nimport \"../utils/ExtensionBase.sol\";\nimport \"../utils/FundDeployerOwnerMixin.sol\";\nimport \"./IPolicy.sol\";\nimport \"./IPolicyManager.sol\";\n\n/// @title PolicyManager Contract\n/// @author Enzyme Council \n/// @notice Manages policies for funds\ncontract PolicyManager is IPolicyManager, ExtensionBase, FundDeployerOwnerMixin {\n using EnumerableSet for EnumerableSet.AddressSet;\n\n event PolicyDeregistered(address indexed policy, string indexed identifier);\n\n event PolicyDisabledForFund(address indexed comptrollerProxy, address indexed policy);\n\n event PolicyEnabledForFund(\n address indexed comptrollerProxy,\n address indexed policy,\n bytes settingsData\n );\n\n event PolicyRegistered(\n address indexed policy,\n string indexed identifier,\n PolicyHook[] implementedHooks\n );\n\n EnumerableSet.AddressSet private registeredPolicies;\n mapping(address => mapping(PolicyHook => bool)) private policyToHookToIsImplemented;\n mapping(address => EnumerableSet.AddressSet) private comptrollerProxyToPolicies;\n\n modifier onlyBuySharesHooks(address _policy) {\n require(\n !policyImplementsHook(_policy, PolicyHook.PreCallOnIntegration) &&\n !policyImplementsHook(_policy, PolicyHook.PostCallOnIntegration),\n \"onlyBuySharesHooks: Disallowed hook\"\n );\n _;\n }\n\n modifier onlyEnabledPolicyForFund(address _comptrollerProxy, address _policy) {\n require(\n policyIsEnabledForFund(_comptrollerProxy, _policy),\n \"onlyEnabledPolicyForFund: Policy not enabled\"\n );\n _;\n }\n\n constructor(address _fundDeployer) public FundDeployerOwnerMixin(_fundDeployer) {}\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Validates and initializes policies as necessary prior to fund activation\n /// @param _isMigratedFund True if the fund is migrating to this release\n /// @dev Caller is expected to be a valid ComptrollerProxy, but there isn't a need to validate.\n function activateForFund(bool _isMigratedFund) external override {\n address vaultProxy = __setValidatedVaultProxy(msg.sender);\n\n // Policies must assert that they are congruent with migrated vault state\n if (_isMigratedFund) {\n address[] memory enabledPolicies = getEnabledPoliciesForFund(msg.sender);\n for (uint256 i; i < enabledPolicies.length; i++) {\n __activatePolicyForFund(msg.sender, vaultProxy, enabledPolicies[i]);\n }\n }\n }\n\n /// @notice Deactivates policies for a fund by destroying storage\n function deactivateForFund() external override {\n delete comptrollerProxyToVaultProxy[msg.sender];\n\n for (uint256 i = comptrollerProxyToPolicies[msg.sender].length(); i > 0; i--) {\n comptrollerProxyToPolicies[msg.sender].remove(\n comptrollerProxyToPolicies[msg.sender].at(i - 1)\n );\n }\n }\n\n /// @notice Disables a policy for a fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _policy The policy address to disable\n function disablePolicyForFund(address _comptrollerProxy, address _policy)\n external\n onlyBuySharesHooks(_policy)\n onlyEnabledPolicyForFund(_comptrollerProxy, _policy)\n {\n __validateIsFundOwner(getVaultProxyForFund(_comptrollerProxy), msg.sender);\n\n comptrollerProxyToPolicies[_comptrollerProxy].remove(_policy);\n\n emit PolicyDisabledForFund(_comptrollerProxy, _policy);\n }\n\n /// @notice Enables a policy for a fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _policy The policy address to enable\n /// @param _settingsData The encoded settings data with which to configure the policy\n /// @dev Disabling a policy does not delete fund config on the policy, so if a policy is\n /// disabled and then enabled again, its initial state will be the previous config. It is the\n /// policy's job to determine how to merge that config with the _settingsData param in this function.\n function enablePolicyForFund(\n address _comptrollerProxy,\n address _policy,\n bytes calldata _settingsData\n ) external onlyBuySharesHooks(_policy) {\n address vaultProxy = getVaultProxyForFund(_comptrollerProxy);\n __validateIsFundOwner(vaultProxy, msg.sender);\n\n __enablePolicyForFund(_comptrollerProxy, _policy, _settingsData);\n\n __activatePolicyForFund(_comptrollerProxy, vaultProxy, _policy);\n }\n\n /// @notice Enable policies for use in a fund\n /// @param _configData Encoded config data\n /// @dev Only called during init() on ComptrollerProxy deployment\n function setConfigForFund(bytes calldata _configData) external override {\n (address[] memory policies, bytes[] memory settingsData) = abi.decode(\n _configData,\n (address[], bytes[])\n );\n\n // Sanity check\n require(\n policies.length == settingsData.length,\n \"setConfigForFund: policies and settingsData array lengths unequal\"\n );\n\n // Enable each policy with settings\n for (uint256 i; i < policies.length; i++) {\n __enablePolicyForFund(msg.sender, policies[i], settingsData[i]);\n }\n }\n\n /// @notice Updates policy settings for a fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _policy The Policy contract to update\n /// @param _settingsData The encoded settings data with which to update the policy config\n function updatePolicySettingsForFund(\n address _comptrollerProxy,\n address _policy,\n bytes calldata _settingsData\n ) external onlyBuySharesHooks(_policy) onlyEnabledPolicyForFund(_comptrollerProxy, _policy) {\n address vaultProxy = getVaultProxyForFund(_comptrollerProxy);\n __validateIsFundOwner(vaultProxy, msg.sender);\n\n IPolicy(_policy).updateFundSettings(_comptrollerProxy, vaultProxy, _settingsData);\n }\n\n /// @notice Validates all policies that apply to a given hook for a fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _hook The PolicyHook for which to validate policies\n /// @param _validationData The encoded data with which to validate the filtered policies\n function validatePolicies(\n address _comptrollerProxy,\n PolicyHook _hook,\n bytes calldata _validationData\n ) external override {\n address vaultProxy = getVaultProxyForFund(_comptrollerProxy);\n address[] memory policies = getEnabledPoliciesForFund(_comptrollerProxy);\n for (uint256 i; i < policies.length; i++) {\n if (!policyImplementsHook(policies[i], _hook)) {\n continue;\n }\n\n require(\n IPolicy(policies[i]).validateRule(\n _comptrollerProxy,\n vaultProxy,\n _hook,\n _validationData\n ),\n string(\n abi.encodePacked(\n \"Rule evaluated to false: \",\n IPolicy(policies[i]).identifier()\n )\n )\n );\n }\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Helper to activate a policy for a fund\n function __activatePolicyForFund(\n address _comptrollerProxy,\n address _vaultProxy,\n address _policy\n ) private {\n IPolicy(_policy).activateForFund(_comptrollerProxy, _vaultProxy);\n }\n\n /// @dev Helper to set config and enable policies for a fund\n function __enablePolicyForFund(\n address _comptrollerProxy,\n address _policy,\n bytes memory _settingsData\n ) private {\n require(\n !policyIsEnabledForFund(_comptrollerProxy, _policy),\n \"__enablePolicyForFund: policy already enabled\"\n );\n require(policyIsRegistered(_policy), \"__enablePolicyForFund: Policy is not registered\");\n\n // Set fund config on policy\n if (_settingsData.length > 0) {\n IPolicy(_policy).addFundSettings(_comptrollerProxy, _settingsData);\n }\n\n // Add policy\n comptrollerProxyToPolicies[_comptrollerProxy].add(_policy);\n\n emit PolicyEnabledForFund(_comptrollerProxy, _policy, _settingsData);\n }\n\n /// @dev Helper to validate fund owner.\n /// Preferred to a modifier because allows gas savings if re-using _vaultProxy.\n function __validateIsFundOwner(address _vaultProxy, address _who) private view {\n require(\n _who == IVault(_vaultProxy).getOwner(),\n \"Only the fund owner can call this function\"\n );\n }\n\n ///////////////////////\n // POLICIES REGISTRY //\n ///////////////////////\n\n /// @notice Remove policies from the list of registered policies\n /// @param _policies Addresses of policies to be registered\n function deregisterPolicies(address[] calldata _policies) external onlyFundDeployerOwner {\n require(_policies.length > 0, \"deregisterPolicies: _policies cannot be empty\");\n\n for (uint256 i; i < _policies.length; i++) {\n require(\n policyIsRegistered(_policies[i]),\n \"deregisterPolicies: policy is not registered\"\n );\n\n registeredPolicies.remove(_policies[i]);\n\n emit PolicyDeregistered(_policies[i], IPolicy(_policies[i]).identifier());\n }\n }\n\n /// @notice Add policies to the list of registered policies\n /// @param _policies Addresses of policies to be registered\n function registerPolicies(address[] calldata _policies) external onlyFundDeployerOwner {\n require(_policies.length > 0, \"registerPolicies: _policies cannot be empty\");\n\n for (uint256 i; i < _policies.length; i++) {\n require(\n !policyIsRegistered(_policies[i]),\n \"registerPolicies: policy already registered\"\n );\n\n registeredPolicies.add(_policies[i]);\n\n // Store the hooks that a policy implements for later use.\n // Fronts the gas for calls to check if a hook is implemented, and guarantees\n // that the implementsHooks return value does not change post-registration.\n IPolicy policyContract = IPolicy(_policies[i]);\n PolicyHook[] memory implementedHooks = policyContract.implementedHooks();\n for (uint256 j; j < implementedHooks.length; j++) {\n policyToHookToIsImplemented[_policies[i]][implementedHooks[j]] = true;\n }\n\n emit PolicyRegistered(_policies[i], policyContract.identifier(), implementedHooks);\n }\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Get all registered policies\n /// @return registeredPoliciesArray_ A list of all registered policy addresses\n function getRegisteredPolicies()\n external\n view\n returns (address[] memory registeredPoliciesArray_)\n {\n registeredPoliciesArray_ = new address[](registeredPolicies.length());\n for (uint256 i; i < registeredPoliciesArray_.length; i++) {\n registeredPoliciesArray_[i] = registeredPolicies.at(i);\n }\n }\n\n /// @notice Get a list of enabled policies for a given fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @return enabledPolicies_ An array of enabled policy addresses\n function getEnabledPoliciesForFund(address _comptrollerProxy)\n public\n view\n returns (address[] memory enabledPolicies_)\n {\n enabledPolicies_ = new address[](comptrollerProxyToPolicies[_comptrollerProxy].length());\n for (uint256 i; i < enabledPolicies_.length; i++) {\n enabledPolicies_[i] = comptrollerProxyToPolicies[_comptrollerProxy].at(i);\n }\n }\n\n /// @notice Checks if a policy implements a particular hook\n /// @param _policy The address of the policy to check\n /// @param _hook The PolicyHook to check\n /// @return implementsHook_ True if the policy implements the hook\n function policyImplementsHook(address _policy, PolicyHook _hook)\n public\n view\n returns (bool implementsHook_)\n {\n return policyToHookToIsImplemented[_policy][_hook];\n }\n\n /// @notice Check if a policy is enabled for the fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund to check\n /// @param _policy The address of the policy to check\n /// @return isEnabled_ True if the policy is enabled for the fund\n function policyIsEnabledForFund(address _comptrollerProxy, address _policy)\n public\n view\n returns (bool isEnabled_)\n {\n return comptrollerProxyToPolicies[_comptrollerProxy].contains(_policy);\n }\n\n /// @notice Check whether a policy is registered\n /// @param _policy The address of the policy to check\n /// @return isRegistered_ True if the policy is registered\n function policyIsRegistered(address _policy) public view returns (bool isRegistered_) {\n return registeredPolicies.contains(_policy);\n }\n}\n" }, "@openzeppelin/contracts/utils/EnumerableSet.sol": { "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\n/**\n * @dev Library for managing\n * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive\n * types.\n *\n * Sets have the following properties:\n *\n * - Elements are added, removed, and checked for existence in constant time\n * (O(1)).\n * - Elements are enumerated in O(n). No guarantees are made on the ordering.\n *\n * ```\n * contract Example {\n * // Add the library methods\n * using EnumerableSet for EnumerableSet.AddressSet;\n *\n * // Declare a set state variable\n * EnumerableSet.AddressSet private mySet;\n * }\n * ```\n *\n * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256`\n * (`UintSet`) are supported.\n */\nlibrary EnumerableSet {\n // To implement this library for multiple types with as little code\n // repetition as possible, we write it in terms of a generic Set type with\n // bytes32 values.\n // The Set implementation uses private functions, and user-facing\n // implementations (such as AddressSet) are just wrappers around the\n // underlying Set.\n // This means that we can only create new EnumerableSets for types that fit\n // in bytes32.\n\n struct Set {\n // Storage of set values\n bytes32[] _values;\n\n // Position of the value in the `values` array, plus 1 because index 0\n // means a value is not in the set.\n mapping (bytes32 => uint256) _indexes;\n }\n\n /**\n * @dev Add a value to a set. O(1).\n *\n * Returns true if the value was added to the set, that is if it was not\n * already present.\n */\n function _add(Set storage set, bytes32 value) private returns (bool) {\n if (!_contains(set, value)) {\n set._values.push(value);\n // The value is stored at length-1, but we add 1 to all indexes\n // and use 0 as a sentinel value\n set._indexes[value] = set._values.length;\n return true;\n } else {\n return false;\n }\n }\n\n /**\n * @dev Removes a value from a set. O(1).\n *\n * Returns true if the value was removed from the set, that is if it was\n * present.\n */\n function _remove(Set storage set, bytes32 value) private returns (bool) {\n // We read and store the value's index to prevent multiple reads from the same storage slot\n uint256 valueIndex = set._indexes[value];\n\n if (valueIndex != 0) { // Equivalent to contains(set, value)\n // To delete an element from the _values array in O(1), we swap the element to delete with the last one in\n // the array, and then remove the last element (sometimes called as 'swap and pop').\n // This modifies the order of the array, as noted in {at}.\n\n uint256 toDeleteIndex = valueIndex - 1;\n uint256 lastIndex = set._values.length - 1;\n\n // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs\n // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.\n\n bytes32 lastvalue = set._values[lastIndex];\n\n // Move the last value to the index where the value to delete is\n set._values[toDeleteIndex] = lastvalue;\n // Update the index for the moved value\n set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based\n\n // Delete the slot where the moved value was stored\n set._values.pop();\n\n // Delete the index for the deleted slot\n delete set._indexes[value];\n\n return true;\n } else {\n return false;\n }\n }\n\n /**\n * @dev Returns true if the value is in the set. O(1).\n */\n function _contains(Set storage set, bytes32 value) private view returns (bool) {\n return set._indexes[value] != 0;\n }\n\n /**\n * @dev Returns the number of values on the set. O(1).\n */\n function _length(Set storage set) private view returns (uint256) {\n return set._values.length;\n }\n\n /**\n * @dev Returns the value stored at position `index` in the set. O(1).\n *\n * Note that there are no guarantees on the ordering of values inside the\n * array, and it may change when more values are added or removed.\n *\n * Requirements:\n *\n * - `index` must be strictly less than {length}.\n */\n function _at(Set storage set, uint256 index) private view returns (bytes32) {\n require(set._values.length > index, \"EnumerableSet: index out of bounds\");\n return set._values[index];\n }\n\n // AddressSet\n\n struct AddressSet {\n Set _inner;\n }\n\n /**\n * @dev Add a value to a set. O(1).\n *\n * Returns true if the value was added to the set, that is if it was not\n * already present.\n */\n function add(AddressSet storage set, address value) internal returns (bool) {\n return _add(set._inner, bytes32(uint256(value)));\n }\n\n /**\n * @dev Removes a value from a set. O(1).\n *\n * Returns true if the value was removed from the set, that is if it was\n * present.\n */\n function remove(AddressSet storage set, address value) internal returns (bool) {\n return _remove(set._inner, bytes32(uint256(value)));\n }\n\n /**\n * @dev Returns true if the value is in the set. O(1).\n */\n function contains(AddressSet storage set, address value) internal view returns (bool) {\n return _contains(set._inner, bytes32(uint256(value)));\n }\n\n /**\n * @dev Returns the number of values in the set. O(1).\n */\n function length(AddressSet storage set) internal view returns (uint256) {\n return _length(set._inner);\n }\n\n /**\n * @dev Returns the value stored at position `index` in the set. O(1).\n *\n * Note that there are no guarantees on the ordering of values inside the\n * array, and it may change when more values are added or removed.\n *\n * Requirements:\n *\n * - `index` must be strictly less than {length}.\n */\n function at(AddressSet storage set, uint256 index) internal view returns (address) {\n return address(uint256(_at(set._inner, index)));\n }\n\n\n // UintSet\n\n struct UintSet {\n Set _inner;\n }\n\n /**\n * @dev Add a value to a set. O(1).\n *\n * Returns true if the value was added to the set, that is if it was not\n * already present.\n */\n function add(UintSet storage set, uint256 value) internal returns (bool) {\n return _add(set._inner, bytes32(value));\n }\n\n /**\n * @dev Removes a value from a set. O(1).\n *\n * Returns true if the value was removed from the set, that is if it was\n * present.\n */\n function remove(UintSet storage set, uint256 value) internal returns (bool) {\n return _remove(set._inner, bytes32(value));\n }\n\n /**\n * @dev Returns true if the value is in the set. O(1).\n */\n function contains(UintSet storage set, uint256 value) internal view returns (bool) {\n return _contains(set._inner, bytes32(value));\n }\n\n /**\n * @dev Returns the number of values on the set. O(1).\n */\n function length(UintSet storage set) internal view returns (uint256) {\n return _length(set._inner);\n }\n\n /**\n * @dev Returns the value stored at position `index` in the set. O(1).\n *\n * Note that there are no guarantees on the ordering of values inside the\n * array, and it may change when more values are added or removed.\n *\n * Requirements:\n *\n * - `index` must be strictly less than {length}.\n */\n function at(UintSet storage set, uint256 index) internal view returns (uint256) {\n return uint256(_at(set._inner, index));\n }\n}\n" }, "contracts/release/core/fund/vault/IVault.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../../../persistent/utils/IMigratableVault.sol\";\n\n/// @title IVault Interface\n/// @author Enzyme Council \ninterface IVault is IMigratableVault {\n function addTrackedAsset(address) external;\n\n function approveAssetSpender(\n address,\n address,\n uint256\n ) external;\n\n function burnShares(address, uint256) external;\n\n function callOnContract(address, bytes calldata) external;\n\n function getAccessor() external view returns (address);\n\n function getOwner() external view returns (address);\n\n function getTrackedAssets() external view returns (address[] memory);\n\n function isTrackedAsset(address) external view returns (bool);\n\n function mintShares(address, uint256) external;\n\n function removeTrackedAsset(address) external;\n\n function transferShares(\n address,\n address,\n uint256\n ) external;\n\n function withdrawAssetTo(\n address,\n address,\n uint256\n ) external;\n}\n" }, "contracts/release/extensions/utils/ExtensionBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../core/fund/comptroller/IComptroller.sol\";\nimport \"../../core/fund/vault/IVault.sol\";\nimport \"../IExtension.sol\";\n\n/// @title ExtensionBase Contract\n/// @author Enzyme Council \n/// @notice Base class for an extension\nabstract contract ExtensionBase is IExtension {\n mapping(address => address) internal comptrollerProxyToVaultProxy;\n\n /// @notice Allows extension to run logic during fund activation\n /// @dev Unimplemented by default, may be overridden.\n function activateForFund(bool) external virtual override {\n return;\n }\n\n /// @notice Allows extension to run logic during fund deactivation (destruct)\n /// @dev Unimplemented by default, may be overridden.\n function deactivateForFund() external virtual override {\n return;\n }\n\n /// @notice Receives calls from ComptrollerLib.callOnExtension()\n /// and dispatches the appropriate action\n /// @dev Unimplemented by default, may be overridden.\n function receiveCallFromComptroller(\n address,\n uint256,\n bytes calldata\n ) external virtual override {\n revert(\"receiveCallFromComptroller: Unimplemented for Extension\");\n }\n\n /// @notice Allows extension to run logic during fund configuration\n /// @dev Unimplemented by default, may be overridden.\n function setConfigForFund(bytes calldata) external virtual override {\n return;\n }\n\n /// @dev Helper to validate a ComptrollerProxy-VaultProxy relation, which we store for both\n /// gas savings and to guarantee a spoofed ComptrollerProxy does not change getVaultProxy().\n /// Will revert without reason if the expected interfaces do not exist.\n function __setValidatedVaultProxy(address _comptrollerProxy)\n internal\n returns (address vaultProxy_)\n {\n require(\n comptrollerProxyToVaultProxy[_comptrollerProxy] == address(0),\n \"__setValidatedVaultProxy: Already set\"\n );\n\n vaultProxy_ = IComptroller(_comptrollerProxy).getVaultProxy();\n require(vaultProxy_ != address(0), \"__setValidatedVaultProxy: Missing vaultProxy\");\n\n require(\n _comptrollerProxy == IVault(vaultProxy_).getAccessor(),\n \"__setValidatedVaultProxy: Not the VaultProxy accessor\"\n );\n\n comptrollerProxyToVaultProxy[_comptrollerProxy] = vaultProxy_;\n\n return vaultProxy_;\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the verified VaultProxy for a given ComptrollerProxy\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @return vaultProxy_ The VaultProxy of the fund\n function getVaultProxyForFund(address _comptrollerProxy)\n public\n view\n returns (address vaultProxy_)\n {\n return comptrollerProxyToVaultProxy[_comptrollerProxy];\n }\n}\n" }, "contracts/release/extensions/policy-manager/IPolicy.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"./IPolicyManager.sol\";\n\n/// @title Policy Interface\n/// @author Enzyme Council \ninterface IPolicy {\n function activateForFund(address _comptrollerProxy, address _vaultProxy) external;\n\n function addFundSettings(address _comptrollerProxy, bytes calldata _encodedSettings) external;\n\n function identifier() external pure returns (string memory identifier_);\n\n function implementedHooks()\n external\n view\n returns (IPolicyManager.PolicyHook[] memory implementedHooks_);\n\n function updateFundSettings(\n address _comptrollerProxy,\n address _vaultProxy,\n bytes calldata _encodedSettings\n ) external;\n\n function validateRule(\n address _comptrollerProxy,\n address _vaultProxy,\n IPolicyManager.PolicyHook _hook,\n bytes calldata _encodedArgs\n ) external returns (bool isValid_);\n}\n" }, "contracts/release/extensions/policy-manager/IPolicyManager.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\n/// @title PolicyManager Interface\n/// @author Enzyme Council \n/// @notice Interface for the PolicyManager\ninterface IPolicyManager {\n enum PolicyHook {\n BuySharesSetup,\n PreBuyShares,\n PostBuyShares,\n BuySharesCompleted,\n PreCallOnIntegration,\n PostCallOnIntegration\n }\n\n function validatePolicies(\n address,\n PolicyHook,\n bytes calldata\n ) external;\n}\n" }, "contracts/persistent/utils/IMigratableVault.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IMigratableVault Interface\n/// @author Enzyme Council \n/// @dev DO NOT EDIT CONTRACT\ninterface IMigratableVault {\n function canMigrate(address _who) external view returns (bool canMigrate_);\n\n function init(\n address _owner,\n address _accessor,\n string calldata _fundName\n ) external;\n\n function setAccessor(address _nextAccessor) external;\n\n function setVaultLib(address _nextVaultLib) external;\n}\n" }, "contracts/release/core/fund/comptroller/IComptroller.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IComptroller Interface\n/// @author Enzyme Council \ninterface IComptroller {\n enum VaultAction {\n None,\n BurnShares,\n MintShares,\n TransferShares,\n ApproveAssetSpender,\n WithdrawAssetTo,\n AddTrackedAsset,\n RemoveTrackedAsset\n }\n\n function activate(address, bool) external;\n\n function calcGav(bool) external returns (uint256, bool);\n\n function calcGrossShareValue(bool) external returns (uint256, bool);\n\n function callOnExtension(\n address,\n uint256,\n bytes calldata\n ) external;\n\n function configureExtensions(bytes calldata, bytes calldata) external;\n\n function destruct() external;\n\n function getDenominationAsset() external view returns (address);\n\n function getVaultProxy() external view returns (address);\n\n function init(address, uint256) external;\n\n function permissionedVaultAction(VaultAction, bytes calldata) external;\n}\n" }, "contracts/release/extensions/IExtension.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IExtension Interface\n/// @author Enzyme Council \n/// @notice Interface for all extensions\ninterface IExtension {\n function activateForFund(bool _isMigration) external;\n\n function deactivateForFund() external;\n\n function receiveCallFromComptroller(\n address _comptrollerProxy,\n uint256 _actionId,\n bytes calldata _callArgs\n ) external;\n\n function setConfigForFund(bytes calldata _configData) external;\n}\n" }, "contracts/release/extensions/policy-manager/policies/utils/PolicyBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../IPolicy.sol\";\n\n/// @title PolicyBase Contract\n/// @author Enzyme Council \n/// @notice Abstract base contract for all policies\nabstract contract PolicyBase is IPolicy {\n address internal immutable POLICY_MANAGER;\n\n modifier onlyPolicyManager {\n require(msg.sender == POLICY_MANAGER, \"Only the PolicyManager can make this call\");\n _;\n }\n\n constructor(address _policyManager) public {\n POLICY_MANAGER = _policyManager;\n }\n\n /// @notice Validates and initializes a policy as necessary prior to fund activation\n /// @dev Unimplemented by default, can be overridden by the policy\n function activateForFund(address, address) external virtual override {\n return;\n }\n\n /// @notice Updates the policy settings for a fund\n /// @dev Disallowed by default, can be overridden by the policy\n function updateFundSettings(\n address,\n address,\n bytes calldata\n ) external virtual override {\n revert(\"updateFundSettings: Updates not allowed for this policy\");\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `POLICY_MANAGER` variable value\n /// @return policyManager_ The `POLICY_MANAGER` variable value\n function getPolicyManager() external view returns (address policyManager_) {\n return POLICY_MANAGER;\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/call-on-integration/utils/PostCallOnIntegrationValidatePolicyBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../utils/PolicyBase.sol\";\n\n/// @title CallOnIntegrationPostValidatePolicyMixin Contract\n/// @author Enzyme Council \n/// @notice A mixin contract for policies that only implement the PostCallOnIntegration policy hook\nabstract contract PostCallOnIntegrationValidatePolicyBase is PolicyBase {\n /// @notice Gets the implemented PolicyHooks for a policy\n /// @return implementedHooks_ The implemented PolicyHooks\n function implementedHooks()\n external\n view\n override\n returns (IPolicyManager.PolicyHook[] memory implementedHooks_)\n {\n implementedHooks_ = new IPolicyManager.PolicyHook[](1);\n implementedHooks_[0] = IPolicyManager.PolicyHook.PostCallOnIntegration;\n\n return implementedHooks_;\n }\n\n /// @notice Helper to decode rule arguments\n function __decodeRuleArgs(bytes memory _encodedRuleArgs)\n internal\n pure\n returns (\n address adapter_,\n bytes4 selector_,\n address[] memory incomingAssets_,\n uint256[] memory incomingAssetAmounts_,\n address[] memory outgoingAssets_,\n uint256[] memory outgoingAssetAmounts_\n )\n {\n return\n abi.decode(\n _encodedRuleArgs,\n (address, bytes4, address[], uint256[], address[], uint256[])\n );\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/call-on-integration/MaxConcentration.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"../../../../core/fund/comptroller/ComptrollerLib.sol\";\nimport \"../../../../core/fund/vault/VaultLib.sol\";\nimport \"../../../../infrastructure/value-interpreter/ValueInterpreter.sol\";\nimport \"./utils/PostCallOnIntegrationValidatePolicyBase.sol\";\n\n/// @title MaxConcentration Contract\n/// @author Enzyme Council \n/// @notice A policy that defines a configurable threshold for the concentration of any one asset\n/// in a fund's holdings\ncontract MaxConcentration is PostCallOnIntegrationValidatePolicyBase {\n using SafeMath for uint256;\n\n event MaxConcentrationSet(address indexed comptrollerProxy, uint256 value);\n\n uint256 private constant ONE_HUNDRED_PERCENT = 10**18; // 100%\n\n address private immutable VALUE_INTERPRETER;\n\n mapping(address => uint256) private comptrollerProxyToMaxConcentration;\n\n constructor(address _policyManager, address _valueInterpreter)\n public\n PolicyBase(_policyManager)\n {\n VALUE_INTERPRETER = _valueInterpreter;\n }\n\n /// @notice Validates and initializes a policy as necessary prior to fund activation\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _vaultProxy The fund's VaultProxy address\n /// @dev No need to authenticate access, as there are no state transitions\n function activateForFund(address _comptrollerProxy, address _vaultProxy)\n external\n override\n onlyPolicyManager\n {\n require(\n passesRule(_comptrollerProxy, _vaultProxy, VaultLib(_vaultProxy).getTrackedAssets()),\n \"activateForFund: Max concentration exceeded\"\n );\n }\n\n /// @notice Add the initial policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function addFundSettings(address _comptrollerProxy, bytes calldata _encodedSettings)\n external\n override\n onlyPolicyManager\n {\n uint256 maxConcentration = abi.decode(_encodedSettings, (uint256));\n require(maxConcentration > 0, \"addFundSettings: maxConcentration must be greater than 0\");\n require(\n maxConcentration <= ONE_HUNDRED_PERCENT,\n \"addFundSettings: maxConcentration cannot exceed 100%\"\n );\n\n comptrollerProxyToMaxConcentration[_comptrollerProxy] = maxConcentration;\n\n emit MaxConcentrationSet(_comptrollerProxy, maxConcentration);\n }\n\n /// @notice Provides a constant string identifier for a policy\n /// @return identifier_ The identifer string\n function identifier() external pure override returns (string memory identifier_) {\n return \"MAX_CONCENTRATION\";\n }\n\n /// @notice Checks whether a particular condition passes the rule for a particular fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _vaultProxy The fund's VaultProxy address\n /// @param _assets The assets with which to check the rule\n /// @return isValid_ True if the rule passes\n /// @dev The fund's denomination asset is exempt from the policy limit.\n function passesRule(\n address _comptrollerProxy,\n address _vaultProxy,\n address[] memory _assets\n ) public returns (bool isValid_) {\n uint256 maxConcentration = comptrollerProxyToMaxConcentration[_comptrollerProxy];\n ComptrollerLib comptrollerProxyContract = ComptrollerLib(_comptrollerProxy);\n address denominationAsset = comptrollerProxyContract.getDenominationAsset();\n // Does not require asset finality, otherwise will fail when incoming asset is a Synth\n (uint256 totalGav, bool gavIsValid) = comptrollerProxyContract.calcGav(false);\n if (!gavIsValid) {\n return false;\n }\n\n for (uint256 i = 0; i < _assets.length; i++) {\n address asset = _assets[i];\n if (\n !__rulePassesForAsset(\n _vaultProxy,\n denominationAsset,\n maxConcentration,\n totalGav,\n asset\n )\n ) {\n return false;\n }\n }\n\n return true;\n }\n\n /// @notice Apply the rule with the specified parameters of a PolicyHook\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _vaultProxy The fund's VaultProxy address\n /// @param _encodedArgs Encoded args with which to validate the rule\n /// @return isValid_ True if the rule passes\n function validateRule(\n address _comptrollerProxy,\n address _vaultProxy,\n IPolicyManager.PolicyHook,\n bytes calldata _encodedArgs\n ) external override returns (bool isValid_) {\n (, , address[] memory incomingAssets, , , ) = __decodeRuleArgs(_encodedArgs);\n if (incomingAssets.length == 0) {\n return true;\n }\n\n return passesRule(_comptrollerProxy, _vaultProxy, incomingAssets);\n }\n\n /// @dev Helper to check if the rule holds for a particular asset.\n /// Avoids the stack-too-deep error.\n function __rulePassesForAsset(\n address _vaultProxy,\n address _denominationAsset,\n uint256 _maxConcentration,\n uint256 _totalGav,\n address _incomingAsset\n ) private returns (bool isValid_) {\n if (_incomingAsset == _denominationAsset) return true;\n\n uint256 assetBalance = ERC20(_incomingAsset).balanceOf(_vaultProxy);\n (uint256 assetGav, bool assetGavIsValid) = ValueInterpreter(VALUE_INTERPRETER)\n .calcLiveAssetValue(_incomingAsset, assetBalance, _denominationAsset);\n\n if (\n !assetGavIsValid ||\n assetGav.mul(ONE_HUNDRED_PERCENT).div(_totalGav) > _maxConcentration\n ) {\n return false;\n }\n\n return true;\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the maxConcentration for a given fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @return maxConcentration_ The maxConcentration\n function getMaxConcentrationForFund(address _comptrollerProxy)\n external\n view\n returns (uint256 maxConcentration_)\n {\n return comptrollerProxyToMaxConcentration[_comptrollerProxy];\n }\n\n /// @notice Gets the `VALUE_INTERPRETER` variable\n /// @return valueInterpreter_ The `VALUE_INTERPRETER` variable value\n function getValueInterpreter() external view returns (address valueInterpreter_) {\n return VALUE_INTERPRETER;\n }\n}\n" }, "contracts/release/core/fund/comptroller/ComptrollerLib.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/SafeERC20.sol\";\nimport \"../../../../persistent/dispatcher/IDispatcher.sol\";\nimport \"../../../extensions/IExtension.sol\";\nimport \"../../../extensions/fee-manager/IFeeManager.sol\";\nimport \"../../../extensions/policy-manager/IPolicyManager.sol\";\nimport \"../../../infrastructure/price-feeds/primitives/IPrimitivePriceFeed.sol\";\nimport \"../../../infrastructure/value-interpreter/IValueInterpreter.sol\";\nimport \"../../../utils/AddressArrayLib.sol\";\nimport \"../../../utils/AssetFinalityResolver.sol\";\nimport \"../../fund-deployer/IFundDeployer.sol\";\nimport \"../vault/IVault.sol\";\nimport \"./IComptroller.sol\";\n\n/// @title ComptrollerLib Contract\n/// @author Enzyme Council \n/// @notice The core logic library shared by all funds\ncontract ComptrollerLib is IComptroller, AssetFinalityResolver {\n using AddressArrayLib for address[];\n using SafeMath for uint256;\n using SafeERC20 for ERC20;\n\n event MigratedSharesDuePaid(uint256 sharesDue);\n\n event OverridePauseSet(bool indexed overridePause);\n\n event PreRedeemSharesHookFailed(\n bytes failureReturnData,\n address redeemer,\n uint256 sharesQuantity\n );\n\n event SharesBought(\n address indexed caller,\n address indexed buyer,\n uint256 investmentAmount,\n uint256 sharesIssued,\n uint256 sharesReceived\n );\n\n event SharesRedeemed(\n address indexed redeemer,\n uint256 sharesQuantity,\n address[] receivedAssets,\n uint256[] receivedAssetQuantities\n );\n\n event VaultProxySet(address vaultProxy);\n\n // Constants and immutables - shared by all proxies\n uint256 private constant SHARES_UNIT = 10**18;\n address private immutable DISPATCHER;\n address private immutable FUND_DEPLOYER;\n address private immutable FEE_MANAGER;\n address private immutable INTEGRATION_MANAGER;\n address private immutable PRIMITIVE_PRICE_FEED;\n address private immutable POLICY_MANAGER;\n address private immutable VALUE_INTERPRETER;\n\n // Pseudo-constants (can only be set once)\n\n address internal denominationAsset;\n address internal vaultProxy;\n // True only for the one non-proxy\n bool internal isLib;\n\n // Storage\n\n // Allows a fund owner to override a release-level pause\n bool internal overridePause;\n // A reverse-mutex, granting atomic permission for particular contracts to make vault calls\n bool internal permissionedVaultActionAllowed;\n // A mutex to protect against reentrancy\n bool internal reentranceLocked;\n // A timelock between any \"shares actions\" (i.e., buy and redeem shares), per-account\n uint256 internal sharesActionTimelock;\n mapping(address => uint256) internal acctToLastSharesAction;\n\n ///////////////\n // MODIFIERS //\n ///////////////\n\n modifier allowsPermissionedVaultAction {\n __assertPermissionedVaultActionNotAllowed();\n permissionedVaultActionAllowed = true;\n _;\n permissionedVaultActionAllowed = false;\n }\n\n modifier locksReentrance() {\n __assertNotReentranceLocked();\n reentranceLocked = true;\n _;\n reentranceLocked = false;\n }\n\n modifier onlyActive() {\n __assertIsActive(vaultProxy);\n _;\n }\n\n modifier onlyNotPaused() {\n __assertNotPaused();\n _;\n }\n\n modifier onlyFundDeployer() {\n __assertIsFundDeployer(msg.sender);\n _;\n }\n\n modifier onlyOwner() {\n __assertIsOwner(msg.sender);\n _;\n }\n\n modifier timelockedSharesAction(address _account) {\n __assertSharesActionNotTimelocked(_account);\n _;\n acctToLastSharesAction[_account] = block.timestamp;\n }\n\n // ASSERTION HELPERS\n\n // Modifiers are inefficient in terms of contract size,\n // so we use helper functions to prevent repetitive inlining of expensive string values.\n\n /// @dev Since vaultProxy is set during activate(),\n /// we can check that var rather than storing additional state\n function __assertIsActive(address _vaultProxy) private pure {\n require(_vaultProxy != address(0), \"Fund not active\");\n }\n\n function __assertIsFundDeployer(address _who) private view {\n require(_who == FUND_DEPLOYER, \"Only FundDeployer callable\");\n }\n\n function __assertIsOwner(address _who) private view {\n require(_who == IVault(vaultProxy).getOwner(), \"Only fund owner callable\");\n }\n\n function __assertLowLevelCall(bool _success, bytes memory _returnData) private pure {\n require(_success, string(_returnData));\n }\n\n function __assertNotPaused() private view {\n require(!__fundIsPaused(), \"Fund is paused\");\n }\n\n function __assertNotReentranceLocked() private view {\n require(!reentranceLocked, \"Re-entrance\");\n }\n\n function __assertPermissionedVaultActionNotAllowed() private view {\n require(!permissionedVaultActionAllowed, \"Vault action re-entrance\");\n }\n\n function __assertSharesActionNotTimelocked(address _account) private view {\n require(\n block.timestamp.sub(acctToLastSharesAction[_account]) >= sharesActionTimelock,\n \"Shares action timelocked\"\n );\n }\n\n constructor(\n address _dispatcher,\n address _fundDeployer,\n address _valueInterpreter,\n address _feeManager,\n address _integrationManager,\n address _policyManager,\n address _primitivePriceFeed,\n address _synthetixPriceFeed,\n address _synthetixAddressResolver\n ) public AssetFinalityResolver(_synthetixPriceFeed, _synthetixAddressResolver) {\n DISPATCHER = _dispatcher;\n FEE_MANAGER = _feeManager;\n FUND_DEPLOYER = _fundDeployer;\n INTEGRATION_MANAGER = _integrationManager;\n PRIMITIVE_PRICE_FEED = _primitivePriceFeed;\n POLICY_MANAGER = _policyManager;\n VALUE_INTERPRETER = _valueInterpreter;\n isLib = true;\n }\n\n /////////////\n // GENERAL //\n /////////////\n\n /// @notice Calls a specified action on an Extension\n /// @param _extension The Extension contract to call (e.g., FeeManager)\n /// @param _actionId An ID representing the action to take on the extension (see extension)\n /// @param _callArgs The encoded data for the call\n /// @dev Used to route arbitrary calls, so that msg.sender is the ComptrollerProxy\n /// (for access control). Uses a mutex of sorts that allows \"permissioned vault actions\"\n /// during calls originating from this function.\n function callOnExtension(\n address _extension,\n uint256 _actionId,\n bytes calldata _callArgs\n ) external override onlyNotPaused onlyActive locksReentrance allowsPermissionedVaultAction {\n require(\n _extension == FEE_MANAGER || _extension == INTEGRATION_MANAGER,\n \"callOnExtension: _extension invalid\"\n );\n\n IExtension(_extension).receiveCallFromComptroller(msg.sender, _actionId, _callArgs);\n }\n\n /// @notice Sets or unsets an override on a release-wide pause\n /// @param _nextOverridePause True if the pause should be overrode\n function setOverridePause(bool _nextOverridePause) external onlyOwner {\n require(_nextOverridePause != overridePause, \"setOverridePause: Value already set\");\n\n overridePause = _nextOverridePause;\n\n emit OverridePauseSet(_nextOverridePause);\n }\n\n /// @notice Makes an arbitrary call with the VaultProxy contract as the sender\n /// @param _contract The contract to call\n /// @param _selector The selector to call\n /// @param _encodedArgs The encoded arguments for the call\n function vaultCallOnContract(\n address _contract,\n bytes4 _selector,\n bytes calldata _encodedArgs\n ) external onlyNotPaused onlyActive onlyOwner {\n require(\n IFundDeployer(FUND_DEPLOYER).isRegisteredVaultCall(_contract, _selector),\n \"vaultCallOnContract: Unregistered\"\n );\n\n IVault(vaultProxy).callOnContract(_contract, abi.encodePacked(_selector, _encodedArgs));\n }\n\n /// @dev Helper to check whether the release is paused, and that there is no local override\n function __fundIsPaused() private view returns (bool) {\n return\n IFundDeployer(FUND_DEPLOYER).getReleaseStatus() ==\n IFundDeployer.ReleaseStatus.Paused &&\n !overridePause;\n }\n\n ////////////////////////////////\n // PERMISSIONED VAULT ACTIONS //\n ////////////////////////////////\n\n /// @notice Makes a permissioned, state-changing call on the VaultProxy contract\n /// @param _action The enum representing the VaultAction to perform on the VaultProxy\n /// @param _actionData The call data for the action to perform\n function permissionedVaultAction(VaultAction _action, bytes calldata _actionData)\n external\n override\n onlyNotPaused\n onlyActive\n {\n __assertPermissionedVaultAction(msg.sender, _action);\n\n if (_action == VaultAction.AddTrackedAsset) {\n __vaultActionAddTrackedAsset(_actionData);\n } else if (_action == VaultAction.ApproveAssetSpender) {\n __vaultActionApproveAssetSpender(_actionData);\n } else if (_action == VaultAction.BurnShares) {\n __vaultActionBurnShares(_actionData);\n } else if (_action == VaultAction.MintShares) {\n __vaultActionMintShares(_actionData);\n } else if (_action == VaultAction.RemoveTrackedAsset) {\n __vaultActionRemoveTrackedAsset(_actionData);\n } else if (_action == VaultAction.TransferShares) {\n __vaultActionTransferShares(_actionData);\n } else if (_action == VaultAction.WithdrawAssetTo) {\n __vaultActionWithdrawAssetTo(_actionData);\n }\n }\n\n /// @dev Helper to assert that a caller is allowed to perform a particular VaultAction\n function __assertPermissionedVaultAction(address _caller, VaultAction _action) private view {\n require(\n permissionedVaultActionAllowed,\n \"__assertPermissionedVaultAction: No action allowed\"\n );\n\n if (_caller == INTEGRATION_MANAGER) {\n require(\n _action == VaultAction.ApproveAssetSpender ||\n _action == VaultAction.AddTrackedAsset ||\n _action == VaultAction.RemoveTrackedAsset ||\n _action == VaultAction.WithdrawAssetTo,\n \"__assertPermissionedVaultAction: Not valid for IntegrationManager\"\n );\n } else if (_caller == FEE_MANAGER) {\n require(\n _action == VaultAction.BurnShares ||\n _action == VaultAction.MintShares ||\n _action == VaultAction.TransferShares,\n \"__assertPermissionedVaultAction: Not valid for FeeManager\"\n );\n } else {\n revert(\"__assertPermissionedVaultAction: Not a valid actor\");\n }\n }\n\n /// @dev Helper to add a tracked asset to the fund\n function __vaultActionAddTrackedAsset(bytes memory _actionData) private {\n address asset = abi.decode(_actionData, (address));\n IVault(vaultProxy).addTrackedAsset(asset);\n }\n\n /// @dev Helper to grant a spender an allowance for a fund's asset\n function __vaultActionApproveAssetSpender(bytes memory _actionData) private {\n (address asset, address target, uint256 amount) = abi.decode(\n _actionData,\n (address, address, uint256)\n );\n IVault(vaultProxy).approveAssetSpender(asset, target, amount);\n }\n\n /// @dev Helper to burn fund shares for a particular account\n function __vaultActionBurnShares(bytes memory _actionData) private {\n (address target, uint256 amount) = abi.decode(_actionData, (address, uint256));\n IVault(vaultProxy).burnShares(target, amount);\n }\n\n /// @dev Helper to mint fund shares to a particular account\n function __vaultActionMintShares(bytes memory _actionData) private {\n (address target, uint256 amount) = abi.decode(_actionData, (address, uint256));\n IVault(vaultProxy).mintShares(target, amount);\n }\n\n /// @dev Helper to remove a tracked asset from the fund\n function __vaultActionRemoveTrackedAsset(bytes memory _actionData) private {\n address asset = abi.decode(_actionData, (address));\n\n // Allowing this to fail silently makes it cheaper and simpler\n // for Extensions to not query for the denomination asset\n if (asset != denominationAsset) {\n IVault(vaultProxy).removeTrackedAsset(asset);\n }\n }\n\n /// @dev Helper to transfer fund shares from one account to another\n function __vaultActionTransferShares(bytes memory _actionData) private {\n (address from, address to, uint256 amount) = abi.decode(\n _actionData,\n (address, address, uint256)\n );\n IVault(vaultProxy).transferShares(from, to, amount);\n }\n\n /// @dev Helper to withdraw an asset from the VaultProxy to a given account\n function __vaultActionWithdrawAssetTo(bytes memory _actionData) private {\n (address asset, address target, uint256 amount) = abi.decode(\n _actionData,\n (address, address, uint256)\n );\n IVault(vaultProxy).withdrawAssetTo(asset, target, amount);\n }\n\n ///////////////\n // LIFECYCLE //\n ///////////////\n\n /// @notice Initializes a fund with its core config\n /// @param _denominationAsset The asset in which the fund's value should be denominated\n /// @param _sharesActionTimelock The minimum number of seconds between any two \"shares actions\"\n /// (buying or selling shares) by the same user\n /// @dev Pseudo-constructor per proxy.\n /// No need to assert access because this is called atomically on deployment,\n /// and once it's called, it cannot be called again.\n function init(address _denominationAsset, uint256 _sharesActionTimelock) external override {\n require(denominationAsset == address(0), \"init: Already initialized\");\n require(\n IPrimitivePriceFeed(PRIMITIVE_PRICE_FEED).isSupportedAsset(_denominationAsset),\n \"init: Bad denomination asset\"\n );\n\n denominationAsset = _denominationAsset;\n sharesActionTimelock = _sharesActionTimelock;\n }\n\n /// @notice Configure the extensions of a fund\n /// @param _feeManagerConfigData Encoded config for fees to enable\n /// @param _policyManagerConfigData Encoded config for policies to enable\n /// @dev No need to assert anything beyond FundDeployer access.\n /// Called atomically with init(), but after ComptrollerLib has been deployed,\n /// giving access to its state and interface\n function configureExtensions(\n bytes calldata _feeManagerConfigData,\n bytes calldata _policyManagerConfigData\n ) external override onlyFundDeployer {\n if (_feeManagerConfigData.length > 0) {\n IExtension(FEE_MANAGER).setConfigForFund(_feeManagerConfigData);\n }\n if (_policyManagerConfigData.length > 0) {\n IExtension(POLICY_MANAGER).setConfigForFund(_policyManagerConfigData);\n }\n }\n\n /// @notice Activates the fund by attaching a VaultProxy and activating all Extensions\n /// @param _vaultProxy The VaultProxy to attach to the fund\n /// @param _isMigration True if a migrated fund is being activated\n /// @dev No need to assert anything beyond FundDeployer access.\n function activate(address _vaultProxy, bool _isMigration) external override onlyFundDeployer {\n vaultProxy = _vaultProxy;\n\n emit VaultProxySet(_vaultProxy);\n\n if (_isMigration) {\n // Distribute any shares in the VaultProxy to the fund owner.\n // This is a mechanism to ensure that even in the edge case of a fund being unable\n // to payout fee shares owed during migration, these shares are not lost.\n uint256 sharesDue = ERC20(_vaultProxy).balanceOf(_vaultProxy);\n if (sharesDue > 0) {\n IVault(_vaultProxy).transferShares(\n _vaultProxy,\n IVault(_vaultProxy).getOwner(),\n sharesDue\n );\n\n emit MigratedSharesDuePaid(sharesDue);\n }\n }\n\n // Note: a future release could consider forcing the adding of a tracked asset here,\n // just in case a fund is migrating from an old configuration where they are not able\n // to remove an asset to get under the tracked assets limit\n IVault(_vaultProxy).addTrackedAsset(denominationAsset);\n\n // Activate extensions\n IExtension(FEE_MANAGER).activateForFund(_isMigration);\n IExtension(INTEGRATION_MANAGER).activateForFund(_isMigration);\n IExtension(POLICY_MANAGER).activateForFund(_isMigration);\n }\n\n /// @notice Remove the config for a fund\n /// @dev No need to assert anything beyond FundDeployer access.\n /// Calling onlyNotPaused here rather than in the FundDeployer allows\n /// the owner to potentially override the pause and rescue unpaid fees.\n function destruct()\n external\n override\n onlyFundDeployer\n onlyNotPaused\n allowsPermissionedVaultAction\n {\n // Failsafe to protect the libs against selfdestruct\n require(!isLib, \"destruct: Only delegate callable\");\n\n // Deactivate the extensions\n IExtension(FEE_MANAGER).deactivateForFund();\n IExtension(INTEGRATION_MANAGER).deactivateForFund();\n IExtension(POLICY_MANAGER).deactivateForFund();\n\n // Delete storage of ComptrollerProxy\n // There should never be ETH in the ComptrollerLib, so no need to waste gas\n // to get the fund owner\n selfdestruct(address(0));\n }\n\n ////////////////\n // ACCOUNTING //\n ////////////////\n\n /// @notice Calculates the gross asset value (GAV) of the fund\n /// @param _requireFinality True if all assets must have exact final balances settled\n /// @return gav_ The fund GAV\n /// @return isValid_ True if the conversion rates used to derive the GAV are all valid\n function calcGav(bool _requireFinality) public override returns (uint256 gav_, bool isValid_) {\n address vaultProxyAddress = vaultProxy;\n address[] memory assets = IVault(vaultProxyAddress).getTrackedAssets();\n if (assets.length == 0) {\n return (0, true);\n }\n\n uint256[] memory balances = new uint256[](assets.length);\n for (uint256 i; i < assets.length; i++) {\n balances[i] = __finalizeIfSynthAndGetAssetBalance(\n vaultProxyAddress,\n assets[i],\n _requireFinality\n );\n }\n\n (gav_, isValid_) = IValueInterpreter(VALUE_INTERPRETER).calcCanonicalAssetsTotalValue(\n assets,\n balances,\n denominationAsset\n );\n\n return (gav_, isValid_);\n }\n\n /// @notice Calculates the gross value of 1 unit of shares in the fund's denomination asset\n /// @param _requireFinality True if all assets must have exact final balances settled\n /// @return grossShareValue_ The amount of the denomination asset per share\n /// @return isValid_ True if the conversion rates to derive the value are all valid\n /// @dev Does not account for any fees outstanding.\n function calcGrossShareValue(bool _requireFinality)\n external\n override\n returns (uint256 grossShareValue_, bool isValid_)\n {\n uint256 gav;\n (gav, isValid_) = calcGav(_requireFinality);\n\n grossShareValue_ = __calcGrossShareValue(\n gav,\n ERC20(vaultProxy).totalSupply(),\n 10**uint256(ERC20(denominationAsset).decimals())\n );\n\n return (grossShareValue_, isValid_);\n }\n\n /// @dev Helper for calculating the gross share value\n function __calcGrossShareValue(\n uint256 _gav,\n uint256 _sharesSupply,\n uint256 _denominationAssetUnit\n ) private pure returns (uint256 grossShareValue_) {\n if (_sharesSupply == 0) {\n return _denominationAssetUnit;\n }\n\n return _gav.mul(SHARES_UNIT).div(_sharesSupply);\n }\n\n ///////////////////\n // PARTICIPATION //\n ///////////////////\n\n // BUY SHARES\n\n /// @notice Buys shares in the fund for multiple sets of criteria\n /// @param _buyers The accounts for which to buy shares\n /// @param _investmentAmounts The amounts of the fund's denomination asset\n /// with which to buy shares for the corresponding _buyers\n /// @param _minSharesQuantities The minimum quantities of shares to buy\n /// with the corresponding _investmentAmounts\n /// @return sharesReceivedAmounts_ The actual amounts of shares received\n /// by the corresponding _buyers\n /// @dev Param arrays have indexes corresponding to individual __buyShares() orders.\n function buyShares(\n address[] calldata _buyers,\n uint256[] calldata _investmentAmounts,\n uint256[] calldata _minSharesQuantities\n )\n external\n onlyNotPaused\n locksReentrance\n allowsPermissionedVaultAction\n returns (uint256[] memory sharesReceivedAmounts_)\n {\n require(_buyers.length > 0, \"buyShares: Empty _buyers\");\n require(\n _buyers.length == _investmentAmounts.length &&\n _buyers.length == _minSharesQuantities.length,\n \"buyShares: Unequal arrays\"\n );\n\n address vaultProxyCopy = vaultProxy;\n __assertIsActive(vaultProxyCopy);\n require(\n !IDispatcher(DISPATCHER).hasMigrationRequest(vaultProxyCopy),\n \"buyShares: Pending migration\"\n );\n\n (uint256 gav, bool gavIsValid) = calcGav(true);\n require(gavIsValid, \"buyShares: Invalid GAV\");\n\n __buySharesSetupHook(msg.sender, _investmentAmounts, gav);\n\n address denominationAssetCopy = denominationAsset;\n uint256 sharePrice = __calcGrossShareValue(\n gav,\n ERC20(vaultProxyCopy).totalSupply(),\n 10**uint256(ERC20(denominationAssetCopy).decimals())\n );\n\n sharesReceivedAmounts_ = new uint256[](_buyers.length);\n for (uint256 i; i < _buyers.length; i++) {\n sharesReceivedAmounts_[i] = __buyShares(\n _buyers[i],\n _investmentAmounts[i],\n _minSharesQuantities[i],\n vaultProxyCopy,\n sharePrice,\n gav,\n denominationAssetCopy\n );\n\n gav = gav.add(_investmentAmounts[i]);\n }\n\n __buySharesCompletedHook(msg.sender, sharesReceivedAmounts_, gav);\n\n return sharesReceivedAmounts_;\n }\n\n /// @dev Helper to buy shares\n function __buyShares(\n address _buyer,\n uint256 _investmentAmount,\n uint256 _minSharesQuantity,\n address _vaultProxy,\n uint256 _sharePrice,\n uint256 _preBuySharesGav,\n address _denominationAsset\n ) private timelockedSharesAction(_buyer) returns (uint256 sharesReceived_) {\n require(_investmentAmount > 0, \"__buyShares: Empty _investmentAmount\");\n\n // Gives Extensions a chance to run logic prior to the minting of bought shares\n __preBuySharesHook(_buyer, _investmentAmount, _minSharesQuantity, _preBuySharesGav);\n\n // Calculate the amount of shares to issue with the investment amount\n uint256 sharesIssued = _investmentAmount.mul(SHARES_UNIT).div(_sharePrice);\n\n // Mint shares to the buyer\n uint256 prevBuyerShares = ERC20(_vaultProxy).balanceOf(_buyer);\n IVault(_vaultProxy).mintShares(_buyer, sharesIssued);\n\n // Transfer the investment asset to the fund.\n // Does not follow the checks-effects-interactions pattern, but it is preferred\n // to have the final state of the VaultProxy prior to running __postBuySharesHook().\n ERC20(_denominationAsset).safeTransferFrom(msg.sender, _vaultProxy, _investmentAmount);\n\n // Gives Extensions a chance to run logic after shares are issued\n __postBuySharesHook(_buyer, _investmentAmount, sharesIssued, _preBuySharesGav);\n\n // The number of actual shares received may differ from shares issued due to\n // how the PostBuyShares hooks are invoked by Extensions (i.e., fees)\n sharesReceived_ = ERC20(_vaultProxy).balanceOf(_buyer).sub(prevBuyerShares);\n require(\n sharesReceived_ >= _minSharesQuantity,\n \"__buyShares: Shares received < _minSharesQuantity\"\n );\n\n emit SharesBought(msg.sender, _buyer, _investmentAmount, sharesIssued, sharesReceived_);\n\n return sharesReceived_;\n }\n\n /// @dev Helper for Extension actions after all __buyShares() calls are made\n function __buySharesCompletedHook(\n address _caller,\n uint256[] memory _sharesReceivedAmounts,\n uint256 _gav\n ) private {\n IPolicyManager(POLICY_MANAGER).validatePolicies(\n address(this),\n IPolicyManager.PolicyHook.BuySharesCompleted,\n abi.encode(_caller, _sharesReceivedAmounts, _gav)\n );\n\n IFeeManager(FEE_MANAGER).invokeHook(\n IFeeManager.FeeHook.BuySharesCompleted,\n abi.encode(_caller, _sharesReceivedAmounts),\n _gav\n );\n }\n\n /// @dev Helper for Extension actions before any __buyShares() calls are made\n function __buySharesSetupHook(\n address _caller,\n uint256[] memory _investmentAmounts,\n uint256 _gav\n ) private {\n IPolicyManager(POLICY_MANAGER).validatePolicies(\n address(this),\n IPolicyManager.PolicyHook.BuySharesSetup,\n abi.encode(_caller, _investmentAmounts, _gav)\n );\n\n IFeeManager(FEE_MANAGER).invokeHook(\n IFeeManager.FeeHook.BuySharesSetup,\n abi.encode(_caller, _investmentAmounts),\n _gav\n );\n }\n\n /// @dev Helper for Extension actions immediately prior to issuing shares.\n /// This could be cleaned up so both Extensions take the same encoded args and handle GAV\n /// in the same way, but there is not the obvious need for gas savings of recycling\n /// the GAV value for the current policies as there is for the fees.\n function __preBuySharesHook(\n address _buyer,\n uint256 _investmentAmount,\n uint256 _minSharesQuantity,\n uint256 _gav\n ) private {\n IFeeManager(FEE_MANAGER).invokeHook(\n IFeeManager.FeeHook.PreBuyShares,\n abi.encode(_buyer, _investmentAmount, _minSharesQuantity),\n _gav\n );\n\n IPolicyManager(POLICY_MANAGER).validatePolicies(\n address(this),\n IPolicyManager.PolicyHook.PreBuyShares,\n abi.encode(_buyer, _investmentAmount, _minSharesQuantity, _gav)\n );\n }\n\n /// @dev Helper for Extension actions immediately after issuing shares.\n /// Same comment applies from __preBuySharesHook() above.\n function __postBuySharesHook(\n address _buyer,\n uint256 _investmentAmount,\n uint256 _sharesIssued,\n uint256 _preBuySharesGav\n ) private {\n uint256 gav = _preBuySharesGav.add(_investmentAmount);\n IFeeManager(FEE_MANAGER).invokeHook(\n IFeeManager.FeeHook.PostBuyShares,\n abi.encode(_buyer, _investmentAmount, _sharesIssued),\n gav\n );\n\n IPolicyManager(POLICY_MANAGER).validatePolicies(\n address(this),\n IPolicyManager.PolicyHook.PostBuyShares,\n abi.encode(_buyer, _investmentAmount, _sharesIssued, gav)\n );\n }\n\n // REDEEM SHARES\n\n /// @notice Redeem all of the sender's shares for a proportionate slice of the fund's assets\n /// @return payoutAssets_ The assets paid out to the redeemer\n /// @return payoutAmounts_ The amount of each asset paid out to the redeemer\n /// @dev See __redeemShares() for further detail\n function redeemShares()\n external\n returns (address[] memory payoutAssets_, uint256[] memory payoutAmounts_)\n {\n return\n __redeemShares(\n msg.sender,\n ERC20(vaultProxy).balanceOf(msg.sender),\n new address[](0),\n new address[](0)\n );\n }\n\n /// @notice Redeem a specified quantity of the sender's shares for a proportionate slice of\n /// the fund's assets, optionally specifying additional assets and assets to skip.\n /// @param _sharesQuantity The quantity of shares to redeem\n /// @param _additionalAssets Additional (non-tracked) assets to claim\n /// @param _assetsToSkip Tracked assets to forfeit\n /// @return payoutAssets_ The assets paid out to the redeemer\n /// @return payoutAmounts_ The amount of each asset paid out to the redeemer\n /// @dev Any claim to passed _assetsToSkip will be forfeited entirely. This should generally\n /// only be exercised if a bad asset is causing redemption to fail.\n function redeemSharesDetailed(\n uint256 _sharesQuantity,\n address[] calldata _additionalAssets,\n address[] calldata _assetsToSkip\n ) external returns (address[] memory payoutAssets_, uint256[] memory payoutAmounts_) {\n return __redeemShares(msg.sender, _sharesQuantity, _additionalAssets, _assetsToSkip);\n }\n\n /// @dev Helper to parse an array of payout assets during redemption, taking into account\n /// additional assets and assets to skip. _assetsToSkip ignores _additionalAssets.\n /// All input arrays are assumed to be unique.\n function __parseRedemptionPayoutAssets(\n address[] memory _trackedAssets,\n address[] memory _additionalAssets,\n address[] memory _assetsToSkip\n ) private pure returns (address[] memory payoutAssets_) {\n address[] memory trackedAssetsToPayout = _trackedAssets.removeItems(_assetsToSkip);\n if (_additionalAssets.length == 0) {\n return trackedAssetsToPayout;\n }\n\n // Add additional assets. Duplicates of trackedAssets are ignored.\n bool[] memory indexesToAdd = new bool[](_additionalAssets.length);\n uint256 additionalItemsCount;\n for (uint256 i; i < _additionalAssets.length; i++) {\n if (!trackedAssetsToPayout.contains(_additionalAssets[i])) {\n indexesToAdd[i] = true;\n additionalItemsCount++;\n }\n }\n if (additionalItemsCount == 0) {\n return trackedAssetsToPayout;\n }\n\n payoutAssets_ = new address[](trackedAssetsToPayout.length.add(additionalItemsCount));\n for (uint256 i; i < trackedAssetsToPayout.length; i++) {\n payoutAssets_[i] = trackedAssetsToPayout[i];\n }\n uint256 payoutAssetsIndex = trackedAssetsToPayout.length;\n for (uint256 i; i < _additionalAssets.length; i++) {\n if (indexesToAdd[i]) {\n payoutAssets_[payoutAssetsIndex] = _additionalAssets[i];\n payoutAssetsIndex++;\n }\n }\n\n return payoutAssets_;\n }\n\n /// @dev Helper for system actions immediately prior to redeeming shares.\n /// Policy validation is not currently allowed on redemption, to ensure continuous redeemability.\n function __preRedeemSharesHook(address _redeemer, uint256 _sharesQuantity)\n private\n allowsPermissionedVaultAction\n {\n try\n IFeeManager(FEE_MANAGER).invokeHook(\n IFeeManager.FeeHook.PreRedeemShares,\n abi.encode(_redeemer, _sharesQuantity),\n 0\n )\n {} catch (bytes memory reason) {\n emit PreRedeemSharesHookFailed(reason, _redeemer, _sharesQuantity);\n }\n }\n\n /// @dev Helper to redeem shares.\n /// This function should never fail without a way to bypass the failure, which is assured\n /// through two mechanisms:\n /// 1. The FeeManager is called with the try/catch pattern to assure that calls to it\n /// can never block redemption.\n /// 2. If a token fails upon transfer(), that token can be skipped (and its balance forfeited)\n /// by explicitly specifying _assetsToSkip.\n /// Because of these assurances, shares should always be redeemable, with the exception\n /// of the timelock period on shares actions that must be respected.\n function __redeemShares(\n address _redeemer,\n uint256 _sharesQuantity,\n address[] memory _additionalAssets,\n address[] memory _assetsToSkip\n )\n private\n locksReentrance\n returns (address[] memory payoutAssets_, uint256[] memory payoutAmounts_)\n {\n require(_sharesQuantity > 0, \"__redeemShares: _sharesQuantity must be >0\");\n require(\n _additionalAssets.isUniqueSet(),\n \"__redeemShares: _additionalAssets contains duplicates\"\n );\n require(_assetsToSkip.isUniqueSet(), \"__redeemShares: _assetsToSkip contains duplicates\");\n\n IVault vaultProxyContract = IVault(vaultProxy);\n\n // Only apply the sharesActionTimelock when a migration is not pending\n if (!IDispatcher(DISPATCHER).hasMigrationRequest(address(vaultProxyContract))) {\n __assertSharesActionNotTimelocked(_redeemer);\n acctToLastSharesAction[_redeemer] = block.timestamp;\n }\n\n // When a fund is paused, settling fees will be skipped\n if (!__fundIsPaused()) {\n // Note that if a fee with `SettlementType.Direct` is charged here (i.e., not `Mint`),\n // then those fee shares will be transferred from the user's balance rather\n // than reallocated from the sharesQuantity being redeemed.\n __preRedeemSharesHook(_redeemer, _sharesQuantity);\n }\n\n // Check the shares quantity against the user's balance after settling fees\n ERC20 sharesContract = ERC20(address(vaultProxyContract));\n require(\n _sharesQuantity <= sharesContract.balanceOf(_redeemer),\n \"__redeemShares: Insufficient shares\"\n );\n\n // Parse the payout assets given optional params to add or skip assets.\n // Note that there is no validation that the _additionalAssets are known assets to\n // the protocol. This means that the redeemer could specify a malicious asset,\n // but since all state-changing, user-callable functions on this contract share the\n // non-reentrant modifier, there is nowhere to perform a reentrancy attack.\n payoutAssets_ = __parseRedemptionPayoutAssets(\n vaultProxyContract.getTrackedAssets(),\n _additionalAssets,\n _assetsToSkip\n );\n require(payoutAssets_.length > 0, \"__redeemShares: No payout assets\");\n\n // Destroy the shares.\n // Must get the shares supply before doing so.\n uint256 sharesSupply = sharesContract.totalSupply();\n vaultProxyContract.burnShares(_redeemer, _sharesQuantity);\n\n // Calculate and transfer payout asset amounts due to redeemer\n payoutAmounts_ = new uint256[](payoutAssets_.length);\n address denominationAssetCopy = denominationAsset;\n for (uint256 i; i < payoutAssets_.length; i++) {\n uint256 assetBalance = __finalizeIfSynthAndGetAssetBalance(\n address(vaultProxyContract),\n payoutAssets_[i],\n true\n );\n\n // If all remaining shares are being redeemed, the logic changes slightly\n if (_sharesQuantity == sharesSupply) {\n payoutAmounts_[i] = assetBalance;\n // Remove every tracked asset, except the denomination asset\n if (payoutAssets_[i] != denominationAssetCopy) {\n vaultProxyContract.removeTrackedAsset(payoutAssets_[i]);\n }\n } else {\n payoutAmounts_[i] = assetBalance.mul(_sharesQuantity).div(sharesSupply);\n }\n\n // Transfer payout asset to redeemer\n if (payoutAmounts_[i] > 0) {\n vaultProxyContract.withdrawAssetTo(payoutAssets_[i], _redeemer, payoutAmounts_[i]);\n }\n }\n\n emit SharesRedeemed(_redeemer, _sharesQuantity, payoutAssets_, payoutAmounts_);\n\n return (payoutAssets_, payoutAmounts_);\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `denominationAsset` variable\n /// @return denominationAsset_ The `denominationAsset` variable value\n function getDenominationAsset() external view override returns (address denominationAsset_) {\n return denominationAsset;\n }\n\n /// @notice Gets the routes for the various contracts used by all funds\n /// @return dispatcher_ The `DISPATCHER` variable value\n /// @return feeManager_ The `FEE_MANAGER` variable value\n /// @return fundDeployer_ The `FUND_DEPLOYER` variable value\n /// @return integrationManager_ The `INTEGRATION_MANAGER` variable value\n /// @return policyManager_ The `POLICY_MANAGER` variable value\n /// @return primitivePriceFeed_ The `PRIMITIVE_PRICE_FEED` variable value\n /// @return valueInterpreter_ The `VALUE_INTERPRETER` variable value\n function getLibRoutes()\n external\n view\n returns (\n address dispatcher_,\n address feeManager_,\n address fundDeployer_,\n address integrationManager_,\n address policyManager_,\n address primitivePriceFeed_,\n address valueInterpreter_\n )\n {\n return (\n DISPATCHER,\n FEE_MANAGER,\n FUND_DEPLOYER,\n INTEGRATION_MANAGER,\n POLICY_MANAGER,\n PRIMITIVE_PRICE_FEED,\n VALUE_INTERPRETER\n );\n }\n\n /// @notice Gets the `overridePause` variable\n /// @return overridePause_ The `overridePause` variable value\n function getOverridePause() external view returns (bool overridePause_) {\n return overridePause;\n }\n\n /// @notice Gets the `sharesActionTimelock` variable\n /// @return sharesActionTimelock_ The `sharesActionTimelock` variable value\n function getSharesActionTimelock() external view returns (uint256 sharesActionTimelock_) {\n return sharesActionTimelock;\n }\n\n /// @notice Gets the `vaultProxy` variable\n /// @return vaultProxy_ The `vaultProxy` variable value\n function getVaultProxy() external view override returns (address vaultProxy_) {\n return vaultProxy;\n }\n}\n" }, "contracts/release/core/fund/vault/VaultLib.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/SafeERC20.sol\";\nimport \"../../../../persistent/dispatcher/IDispatcher.sol\";\nimport \"../../../../persistent/vault/VaultLibBase1.sol\";\nimport \"./IVault.sol\";\n\n/// @title VaultLib Contract\n/// @author Enzyme Council \n/// @notice The per-release proxiable library contract for VaultProxy\n/// @dev The difference in terminology between \"asset\" and \"trackedAsset\" is intentional.\n/// A fund might actually have asset balances of un-tracked assets,\n/// but only tracked assets are used in gav calculations.\n/// Note that this contract inherits VaultLibSafeMath (a verbatim Open Zeppelin SafeMath copy)\n/// from SharesTokenBase via VaultLibBase1\ncontract VaultLib is VaultLibBase1, IVault {\n using SafeERC20 for ERC20;\n\n // Before updating TRACKED_ASSETS_LIMIT in the future, it is important to consider:\n // 1. The highest tracked assets limit ever allowed in the protocol\n // 2. That the next value will need to be respected by all future releases\n uint256 private constant TRACKED_ASSETS_LIMIT = 20;\n\n modifier onlyAccessor() {\n require(msg.sender == accessor, \"Only the designated accessor can make this call\");\n _;\n }\n\n /////////////\n // GENERAL //\n /////////////\n\n /// @notice Sets the account that is allowed to migrate a fund to new releases\n /// @param _nextMigrator The account to set as the allowed migrator\n /// @dev Set to address(0) to remove the migrator.\n function setMigrator(address _nextMigrator) external {\n require(msg.sender == owner, \"setMigrator: Only the owner can call this function\");\n address prevMigrator = migrator;\n require(_nextMigrator != prevMigrator, \"setMigrator: Value already set\");\n\n migrator = _nextMigrator;\n\n emit MigratorSet(prevMigrator, _nextMigrator);\n }\n\n ///////////\n // VAULT //\n ///////////\n\n /// @notice Adds a tracked asset to the fund\n /// @param _asset The asset to add\n /// @dev Allows addition of already tracked assets to fail silently.\n function addTrackedAsset(address _asset) external override onlyAccessor {\n if (!isTrackedAsset(_asset)) {\n require(\n trackedAssets.length < TRACKED_ASSETS_LIMIT,\n \"addTrackedAsset: Limit exceeded\"\n );\n\n assetToIsTracked[_asset] = true;\n trackedAssets.push(_asset);\n\n emit TrackedAssetAdded(_asset);\n }\n }\n\n /// @notice Grants an allowance to a spender to use the fund's asset\n /// @param _asset The asset for which to grant an allowance\n /// @param _target The spender of the allowance\n /// @param _amount The amount of the allowance\n function approveAssetSpender(\n address _asset,\n address _target,\n uint256 _amount\n ) external override onlyAccessor {\n ERC20(_asset).approve(_target, _amount);\n }\n\n /// @notice Makes an arbitrary call with this contract as the sender\n /// @param _contract The contract to call\n /// @param _callData The call data for the call\n function callOnContract(address _contract, bytes calldata _callData)\n external\n override\n onlyAccessor\n {\n (bool success, bytes memory returnData) = _contract.call(_callData);\n require(success, string(returnData));\n }\n\n /// @notice Removes a tracked asset from the fund\n /// @param _asset The asset to remove\n function removeTrackedAsset(address _asset) external override onlyAccessor {\n __removeTrackedAsset(_asset);\n }\n\n /// @notice Withdraws an asset from the VaultProxy to a given account\n /// @param _asset The asset to withdraw\n /// @param _target The account to which to withdraw the asset\n /// @param _amount The amount of asset to withdraw\n function withdrawAssetTo(\n address _asset,\n address _target,\n uint256 _amount\n ) external override onlyAccessor {\n ERC20(_asset).safeTransfer(_target, _amount);\n\n emit AssetWithdrawn(_asset, _target, _amount);\n }\n\n /// @dev Helper to the get the Vault's balance of a given asset\n function __getAssetBalance(address _asset) private view returns (uint256 balance_) {\n return ERC20(_asset).balanceOf(address(this));\n }\n\n /// @dev Helper to remove an asset from a fund's tracked assets.\n /// Allows removal of non-tracked asset to fail silently.\n function __removeTrackedAsset(address _asset) private {\n if (isTrackedAsset(_asset)) {\n assetToIsTracked[_asset] = false;\n\n uint256 trackedAssetsCount = trackedAssets.length;\n for (uint256 i = 0; i < trackedAssetsCount; i++) {\n if (trackedAssets[i] == _asset) {\n if (i < trackedAssetsCount - 1) {\n trackedAssets[i] = trackedAssets[trackedAssetsCount - 1];\n }\n trackedAssets.pop();\n break;\n }\n }\n\n emit TrackedAssetRemoved(_asset);\n }\n }\n\n ////////////\n // SHARES //\n ////////////\n\n /// @notice Burns fund shares from a particular account\n /// @param _target The account for which to burn shares\n /// @param _amount The amount of shares to burn\n function burnShares(address _target, uint256 _amount) external override onlyAccessor {\n __burn(_target, _amount);\n }\n\n /// @notice Mints fund shares to a particular account\n /// @param _target The account for which to burn shares\n /// @param _amount The amount of shares to mint\n function mintShares(address _target, uint256 _amount) external override onlyAccessor {\n __mint(_target, _amount);\n }\n\n /// @notice Transfers fund shares from one account to another\n /// @param _from The account from which to transfer shares\n /// @param _to The account to which to transfer shares\n /// @param _amount The amount of shares to transfer\n function transferShares(\n address _from,\n address _to,\n uint256 _amount\n ) external override onlyAccessor {\n __transfer(_from, _to, _amount);\n }\n\n // ERC20 overrides\n\n /// @dev Disallows the standard ERC20 approve() function\n function approve(address, uint256) public override returns (bool) {\n revert(\"Unimplemented\");\n }\n\n /// @notice Gets the `symbol` value of the shares token\n /// @return symbol_ The `symbol` value\n /// @dev Defers the shares symbol value to the Dispatcher contract\n function symbol() public view override returns (string memory symbol_) {\n return IDispatcher(creator).getSharesTokenSymbol();\n }\n\n /// @dev Disallows the standard ERC20 transfer() function\n function transfer(address, uint256) public override returns (bool) {\n revert(\"Unimplemented\");\n }\n\n /// @dev Disallows the standard ERC20 transferFrom() function\n function transferFrom(\n address,\n address,\n uint256\n ) public override returns (bool) {\n revert(\"Unimplemented\");\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `accessor` variable\n /// @return accessor_ The `accessor` variable value\n function getAccessor() external view override returns (address accessor_) {\n return accessor;\n }\n\n /// @notice Gets the `creator` variable\n /// @return creator_ The `creator` variable value\n function getCreator() external view returns (address creator_) {\n return creator;\n }\n\n /// @notice Gets the `migrator` variable\n /// @return migrator_ The `migrator` variable value\n function getMigrator() external view returns (address migrator_) {\n return migrator;\n }\n\n /// @notice Gets the `owner` variable\n /// @return owner_ The `owner` variable value\n function getOwner() external view override returns (address owner_) {\n return owner;\n }\n\n /// @notice Gets the `trackedAssets` variable\n /// @return trackedAssets_ The `trackedAssets` variable value\n function getTrackedAssets() external view override returns (address[] memory trackedAssets_) {\n return trackedAssets;\n }\n\n /// @notice Check whether an address is a tracked asset of the fund\n /// @param _asset The address to check\n /// @return isTrackedAsset_ True if the address is a tracked asset of the fund\n function isTrackedAsset(address _asset) public view override returns (bool isTrackedAsset_) {\n return assetToIsTracked[_asset];\n }\n}\n" }, "contracts/release/infrastructure/value-interpreter/ValueInterpreter.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../price-feeds/derivatives/IAggregatedDerivativePriceFeed.sol\";\nimport \"../price-feeds/derivatives/IDerivativePriceFeed.sol\";\nimport \"../price-feeds/primitives/IPrimitivePriceFeed.sol\";\nimport \"./IValueInterpreter.sol\";\n\n/// @title ValueInterpreter Contract\n/// @author Enzyme Council \n/// @notice Interprets price feeds to provide covert value between asset pairs\n/// @dev This contract contains several \"live\" value calculations, which for this release are simply\n/// aliases to their \"canonical\" value counterparts since the only primitive price feed (Chainlink)\n/// is immutable in this contract and only has one type of value. Including the \"live\" versions of\n/// functions only serves as a placeholder for infrastructural components and plugins (e.g., policies)\n/// to explicitly define the types of values that they should (and will) be using in a future release.\ncontract ValueInterpreter is IValueInterpreter {\n using SafeMath for uint256;\n\n address private immutable AGGREGATED_DERIVATIVE_PRICE_FEED;\n address private immutable PRIMITIVE_PRICE_FEED;\n\n constructor(address _primitivePriceFeed, address _aggregatedDerivativePriceFeed) public {\n AGGREGATED_DERIVATIVE_PRICE_FEED = _aggregatedDerivativePriceFeed;\n PRIMITIVE_PRICE_FEED = _primitivePriceFeed;\n }\n\n // EXTERNAL FUNCTIONS\n\n /// @notice An alias of calcCanonicalAssetsTotalValue\n function calcLiveAssetsTotalValue(\n address[] calldata _baseAssets,\n uint256[] calldata _amounts,\n address _quoteAsset\n ) external override returns (uint256 value_, bool isValid_) {\n return calcCanonicalAssetsTotalValue(_baseAssets, _amounts, _quoteAsset);\n }\n\n /// @notice An alias of calcCanonicalAssetValue\n function calcLiveAssetValue(\n address _baseAsset,\n uint256 _amount,\n address _quoteAsset\n ) external override returns (uint256 value_, bool isValid_) {\n return calcCanonicalAssetValue(_baseAsset, _amount, _quoteAsset);\n }\n\n // PUBLIC FUNCTIONS\n\n /// @notice Calculates the total value of given amounts of assets in a single quote asset\n /// @param _baseAssets The assets to convert\n /// @param _amounts The amounts of the _baseAssets to convert\n /// @param _quoteAsset The asset to which to convert\n /// @return value_ The sum value of _baseAssets, denominated in the _quoteAsset\n /// @return isValid_ True if the price feed rates used to derive value are all valid\n /// @dev Does not alter protocol state,\n /// but not a view because calls to price feeds can potentially update third party state\n function calcCanonicalAssetsTotalValue(\n address[] memory _baseAssets,\n uint256[] memory _amounts,\n address _quoteAsset\n ) public override returns (uint256 value_, bool isValid_) {\n require(\n _baseAssets.length == _amounts.length,\n \"calcCanonicalAssetsTotalValue: Arrays unequal lengths\"\n );\n require(\n IPrimitivePriceFeed(PRIMITIVE_PRICE_FEED).isSupportedAsset(_quoteAsset),\n \"calcCanonicalAssetsTotalValue: Unsupported _quoteAsset\"\n );\n\n isValid_ = true;\n for (uint256 i; i < _baseAssets.length; i++) {\n (uint256 assetValue, bool assetValueIsValid) = __calcAssetValue(\n _baseAssets[i],\n _amounts[i],\n _quoteAsset\n );\n value_ = value_.add(assetValue);\n if (!assetValueIsValid) {\n isValid_ = false;\n }\n }\n\n return (value_, isValid_);\n }\n\n /// @notice Calculates the value of a given amount of one asset in terms of another asset\n /// @param _baseAsset The asset from which to convert\n /// @param _amount The amount of the _baseAsset to convert\n /// @param _quoteAsset The asset to which to convert\n /// @return value_ The equivalent quantity in the _quoteAsset\n /// @return isValid_ True if the price feed rates used to derive value are all valid\n /// @dev Does not alter protocol state,\n /// but not a view because calls to price feeds can potentially update third party state\n function calcCanonicalAssetValue(\n address _baseAsset,\n uint256 _amount,\n address _quoteAsset\n ) public override returns (uint256 value_, bool isValid_) {\n if (_baseAsset == _quoteAsset || _amount == 0) {\n return (_amount, true);\n }\n\n require(\n IPrimitivePriceFeed(PRIMITIVE_PRICE_FEED).isSupportedAsset(_quoteAsset),\n \"calcCanonicalAssetValue: Unsupported _quoteAsset\"\n );\n\n return __calcAssetValue(_baseAsset, _amount, _quoteAsset);\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Helper to differentially calculate an asset value\n /// based on if it is a primitive or derivative asset.\n function __calcAssetValue(\n address _baseAsset,\n uint256 _amount,\n address _quoteAsset\n ) private returns (uint256 value_, bool isValid_) {\n if (_baseAsset == _quoteAsset || _amount == 0) {\n return (_amount, true);\n }\n\n // Handle case that asset is a primitive\n if (IPrimitivePriceFeed(PRIMITIVE_PRICE_FEED).isSupportedAsset(_baseAsset)) {\n return\n IPrimitivePriceFeed(PRIMITIVE_PRICE_FEED).calcCanonicalValue(\n _baseAsset,\n _amount,\n _quoteAsset\n );\n }\n\n // Handle case that asset is a derivative\n address derivativePriceFeed = IAggregatedDerivativePriceFeed(\n AGGREGATED_DERIVATIVE_PRICE_FEED\n )\n .getPriceFeedForDerivative(_baseAsset);\n if (derivativePriceFeed != address(0)) {\n return __calcDerivativeValue(derivativePriceFeed, _baseAsset, _amount, _quoteAsset);\n }\n\n revert(\"__calcAssetValue: Unsupported _baseAsset\");\n }\n\n /// @dev Helper to calculate the value of a derivative in an arbitrary asset.\n /// Handles multiple underlying assets (e.g., Uniswap and Balancer pool tokens).\n /// Handles underlying assets that are also derivatives (e.g., a cDAI-ETH LP)\n function __calcDerivativeValue(\n address _derivativePriceFeed,\n address _derivative,\n uint256 _amount,\n address _quoteAsset\n ) private returns (uint256 value_, bool isValid_) {\n (address[] memory underlyings, uint256[] memory underlyingAmounts) = IDerivativePriceFeed(\n _derivativePriceFeed\n )\n .calcUnderlyingValues(_derivative, _amount);\n\n require(underlyings.length > 0, \"__calcDerivativeValue: No underlyings\");\n require(\n underlyings.length == underlyingAmounts.length,\n \"__calcDerivativeValue: Arrays unequal lengths\"\n );\n\n // Let validity be negated if any of the underlying value calculations are invalid\n isValid_ = true;\n for (uint256 i = 0; i < underlyings.length; i++) {\n (uint256 underlyingValue, bool underlyingValueIsValid) = __calcAssetValue(\n underlyings[i],\n underlyingAmounts[i],\n _quoteAsset\n );\n\n if (!underlyingValueIsValid) {\n isValid_ = false;\n }\n value_ = value_.add(underlyingValue);\n }\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `AGGREGATED_DERIVATIVE_PRICE_FEED` variable\n /// @return aggregatedDerivativePriceFeed_ The `AGGREGATED_DERIVATIVE_PRICE_FEED` variable value\n function getAggregatedDerivativePriceFeed()\n external\n view\n returns (address aggregatedDerivativePriceFeed_)\n {\n return AGGREGATED_DERIVATIVE_PRICE_FEED;\n }\n\n /// @notice Gets the `PRIMITIVE_PRICE_FEED` variable\n /// @return primitivePriceFeed_ The `PRIMITIVE_PRICE_FEED` variable value\n function getPrimitivePriceFeed() external view returns (address primitivePriceFeed_) {\n return PRIMITIVE_PRICE_FEED;\n }\n}\n" }, "contracts/persistent/dispatcher/IDispatcher.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IDispatcher Interface\n/// @author Enzyme Council \ninterface IDispatcher {\n function cancelMigration(address _vaultProxy, bool _bypassFailure) external;\n\n function claimOwnership() external;\n\n function deployVaultProxy(\n address _vaultLib,\n address _owner,\n address _vaultAccessor,\n string calldata _fundName\n ) external returns (address vaultProxy_);\n\n function executeMigration(address _vaultProxy, bool _bypassFailure) external;\n\n function getCurrentFundDeployer() external view returns (address currentFundDeployer_);\n\n function getFundDeployerForVaultProxy(address _vaultProxy)\n external\n view\n returns (address fundDeployer_);\n\n function getMigrationRequestDetailsForVaultProxy(address _vaultProxy)\n external\n view\n returns (\n address nextFundDeployer_,\n address nextVaultAccessor_,\n address nextVaultLib_,\n uint256 executableTimestamp_\n );\n\n function getMigrationTimelock() external view returns (uint256 migrationTimelock_);\n\n function getNominatedOwner() external view returns (address nominatedOwner_);\n\n function getOwner() external view returns (address owner_);\n\n function getSharesTokenSymbol() external view returns (string memory sharesTokenSymbol_);\n\n function getTimelockRemainingForMigrationRequest(address _vaultProxy)\n external\n view\n returns (uint256 secondsRemaining_);\n\n function hasExecutableMigrationRequest(address _vaultProxy)\n external\n view\n returns (bool hasExecutableRequest_);\n\n function hasMigrationRequest(address _vaultProxy)\n external\n view\n returns (bool hasMigrationRequest_);\n\n function removeNominatedOwner() external;\n\n function setCurrentFundDeployer(address _nextFundDeployer) external;\n\n function setMigrationTimelock(uint256 _nextTimelock) external;\n\n function setNominatedOwner(address _nextNominatedOwner) external;\n\n function setSharesTokenSymbol(string calldata _nextSymbol) external;\n\n function signalMigration(\n address _vaultProxy,\n address _nextVaultAccessor,\n address _nextVaultLib,\n bool _bypassFailure\n ) external;\n}\n" }, "contracts/release/extensions/fee-manager/IFeeManager.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\n/// @title FeeManager Interface\n/// @author Enzyme Council \n/// @notice Interface for the FeeManager\ninterface IFeeManager {\n // No fees for the current release are implemented post-redeemShares\n enum FeeHook {\n Continuous,\n BuySharesSetup,\n PreBuyShares,\n PostBuyShares,\n BuySharesCompleted,\n PreRedeemShares\n }\n enum SettlementType {None, Direct, Mint, Burn, MintSharesOutstanding, BurnSharesOutstanding}\n\n function invokeHook(\n FeeHook,\n bytes calldata,\n uint256\n ) external;\n}\n" }, "contracts/release/infrastructure/price-feeds/primitives/IPrimitivePriceFeed.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IPrimitivePriceFeed Interface\n/// @author Enzyme Council \n/// @notice Interface for primitive price feeds\ninterface IPrimitivePriceFeed {\n function calcCanonicalValue(\n address,\n uint256,\n address\n ) external view returns (uint256, bool);\n\n function calcLiveValue(\n address,\n uint256,\n address\n ) external view returns (uint256, bool);\n\n function isSupportedAsset(address) external view returns (bool);\n}\n" }, "contracts/release/infrastructure/value-interpreter/IValueInterpreter.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IValueInterpreter interface\n/// @author Enzyme Council \n/// @notice Interface for ValueInterpreter\ninterface IValueInterpreter {\n function calcCanonicalAssetValue(\n address,\n uint256,\n address\n ) external returns (uint256, bool);\n\n function calcCanonicalAssetsTotalValue(\n address[] calldata,\n uint256[] calldata,\n address\n ) external returns (uint256, bool);\n\n function calcLiveAssetValue(\n address,\n uint256,\n address\n ) external returns (uint256, bool);\n\n function calcLiveAssetsTotalValue(\n address[] calldata,\n uint256[] calldata,\n address\n ) external returns (uint256, bool);\n}\n" }, "contracts/release/utils/AssetFinalityResolver.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"../infrastructure/price-feeds/derivatives/feeds/SynthetixPriceFeed.sol\";\nimport \"../interfaces/ISynthetixAddressResolver.sol\";\nimport \"../interfaces/ISynthetixExchanger.sol\";\n\n/// @title AssetFinalityResolver Contract\n/// @author Enzyme Council \n/// @notice A contract that helps achieve asset finality\nabstract contract AssetFinalityResolver {\n address internal immutable SYNTHETIX_ADDRESS_RESOLVER;\n address internal immutable SYNTHETIX_PRICE_FEED;\n\n constructor(address _synthetixPriceFeed, address _synthetixAddressResolver) public {\n SYNTHETIX_ADDRESS_RESOLVER = _synthetixAddressResolver;\n SYNTHETIX_PRICE_FEED = _synthetixPriceFeed;\n }\n\n /// @dev Helper to finalize a Synth balance at a given target address and return its balance\n function __finalizeIfSynthAndGetAssetBalance(\n address _target,\n address _asset,\n bool _requireFinality\n ) internal returns (uint256 assetBalance_) {\n bytes32 currencyKey = SynthetixPriceFeed(SYNTHETIX_PRICE_FEED).getCurrencyKeyForSynth(\n _asset\n );\n if (currencyKey != 0) {\n address synthetixExchanger = ISynthetixAddressResolver(SYNTHETIX_ADDRESS_RESOLVER)\n .requireAndGetAddress(\n \"Exchanger\",\n \"finalizeAndGetAssetBalance: Missing Exchanger\"\n );\n try ISynthetixExchanger(synthetixExchanger).settle(_target, currencyKey) {} catch {\n require(!_requireFinality, \"finalizeAndGetAssetBalance: Cannot settle Synth\");\n }\n }\n\n return ERC20(_asset).balanceOf(_target);\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `SYNTHETIX_ADDRESS_RESOLVER` variable\n /// @return synthetixAddressResolver_ The `SYNTHETIX_ADDRESS_RESOLVER` variable value\n function getSynthetixAddressResolver()\n external\n view\n returns (address synthetixAddressResolver_)\n {\n return SYNTHETIX_ADDRESS_RESOLVER;\n }\n\n /// @notice Gets the `SYNTHETIX_PRICE_FEED` variable\n /// @return synthetixPriceFeed_ The `SYNTHETIX_PRICE_FEED` variable value\n function getSynthetixPriceFeed() external view returns (address synthetixPriceFeed_) {\n return SYNTHETIX_PRICE_FEED;\n }\n}\n" }, "contracts/release/infrastructure/price-feeds/derivatives/feeds/SynthetixPriceFeed.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../../../interfaces/ISynthetix.sol\";\nimport \"../../../../interfaces/ISynthetixAddressResolver.sol\";\nimport \"../../../../interfaces/ISynthetixExchangeRates.sol\";\nimport \"../../../../interfaces/ISynthetixProxyERC20.sol\";\nimport \"../../../../interfaces/ISynthetixSynth.sol\";\nimport \"../../../utils/DispatcherOwnerMixin.sol\";\nimport \"../IDerivativePriceFeed.sol\";\n\n/// @title SynthetixPriceFeed Contract\n/// @author Enzyme Council \n/// @notice A price feed that uses Synthetix oracles as price sources\ncontract SynthetixPriceFeed is IDerivativePriceFeed, DispatcherOwnerMixin {\n using SafeMath for uint256;\n\n event SynthAdded(address indexed synth, bytes32 currencyKey);\n\n event SynthCurrencyKeyUpdated(\n address indexed synth,\n bytes32 prevCurrencyKey,\n bytes32 nextCurrencyKey\n );\n\n uint256 private constant SYNTH_UNIT = 10**18;\n address private immutable ADDRESS_RESOLVER;\n address private immutable SUSD;\n\n mapping(address => bytes32) private synthToCurrencyKey;\n\n constructor(\n address _dispatcher,\n address _addressResolver,\n address _sUSD,\n address[] memory _synths\n ) public DispatcherOwnerMixin(_dispatcher) {\n ADDRESS_RESOLVER = _addressResolver;\n SUSD = _sUSD;\n\n address[] memory sUSDSynths = new address[](1);\n sUSDSynths[0] = _sUSD;\n\n __addSynths(sUSDSynths);\n __addSynths(_synths);\n }\n\n /// @notice Converts a given amount of a derivative to its underlying asset values\n /// @param _derivative The derivative to convert\n /// @param _derivativeAmount The amount of the derivative to convert\n /// @return underlyings_ The underlying assets for the _derivative\n /// @return underlyingAmounts_ The amount of each underlying asset for the equivalent derivative amount\n function calcUnderlyingValues(address _derivative, uint256 _derivativeAmount)\n external\n override\n returns (address[] memory underlyings_, uint256[] memory underlyingAmounts_)\n {\n underlyings_ = new address[](1);\n underlyings_[0] = SUSD;\n underlyingAmounts_ = new uint256[](1);\n\n bytes32 currencyKey = getCurrencyKeyForSynth(_derivative);\n require(currencyKey != 0, \"calcUnderlyingValues: _derivative is not supported\");\n\n address exchangeRates = ISynthetixAddressResolver(ADDRESS_RESOLVER).requireAndGetAddress(\n \"ExchangeRates\",\n \"calcUnderlyingValues: Missing ExchangeRates\"\n );\n\n (uint256 rate, bool isInvalid) = ISynthetixExchangeRates(exchangeRates).rateAndInvalid(\n currencyKey\n );\n require(!isInvalid, \"calcUnderlyingValues: _derivative rate is not valid\");\n\n underlyingAmounts_[0] = _derivativeAmount.mul(rate).div(SYNTH_UNIT);\n\n return (underlyings_, underlyingAmounts_);\n }\n\n /// @notice Checks whether an asset is a supported primitive of the price feed\n /// @param _asset The asset to check\n /// @return isSupported_ True if the asset is a supported primitive\n function isSupportedAsset(address _asset) public view override returns (bool isSupported_) {\n return getCurrencyKeyForSynth(_asset) != 0;\n }\n\n /////////////////////\n // SYNTHS REGISTRY //\n /////////////////////\n\n /// @notice Adds Synths to the price feed\n /// @param _synths Synths to add\n function addSynths(address[] calldata _synths) external onlyDispatcherOwner {\n require(_synths.length > 0, \"addSynths: Empty _synths\");\n\n __addSynths(_synths);\n }\n\n /// @notice Updates the cached currencyKey value for specified Synths\n /// @param _synths Synths to update\n /// @dev Anybody can call this function\n function updateSynthCurrencyKeys(address[] calldata _synths) external {\n require(_synths.length > 0, \"updateSynthCurrencyKeys: Empty _synths\");\n\n for (uint256 i; i < _synths.length; i++) {\n bytes32 prevCurrencyKey = synthToCurrencyKey[_synths[i]];\n require(prevCurrencyKey != 0, \"updateSynthCurrencyKeys: Synth not set\");\n\n bytes32 nextCurrencyKey = __getCurrencyKey(_synths[i]);\n require(\n nextCurrencyKey != prevCurrencyKey,\n \"updateSynthCurrencyKeys: Synth has correct currencyKey\"\n );\n\n synthToCurrencyKey[_synths[i]] = nextCurrencyKey;\n\n emit SynthCurrencyKeyUpdated(_synths[i], prevCurrencyKey, nextCurrencyKey);\n }\n }\n\n /// @dev Helper to add Synths\n function __addSynths(address[] memory _synths) private {\n for (uint256 i; i < _synths.length; i++) {\n require(synthToCurrencyKey[_synths[i]] == 0, \"__addSynths: Value already set\");\n\n bytes32 currencyKey = __getCurrencyKey(_synths[i]);\n require(currencyKey != 0, \"__addSynths: No currencyKey\");\n\n synthToCurrencyKey[_synths[i]] = currencyKey;\n\n emit SynthAdded(_synths[i], currencyKey);\n }\n }\n\n /// @dev Helper to query a currencyKey from Synthetix\n function __getCurrencyKey(address _synthProxy) private view returns (bytes32 currencyKey_) {\n return ISynthetixSynth(ISynthetixProxyERC20(_synthProxy).target()).currencyKey();\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `ADDRESS_RESOLVER` variable\n /// @return addressResolver_ The `ADDRESS_RESOLVER` variable value\n function getAddressResolver() external view returns (address) {\n return ADDRESS_RESOLVER;\n }\n\n /// @notice Gets the currencyKey for multiple given Synths\n /// @return currencyKeys_ The currencyKey values\n function getCurrencyKeysForSynths(address[] calldata _synths)\n external\n view\n returns (bytes32[] memory currencyKeys_)\n {\n currencyKeys_ = new bytes32[](_synths.length);\n for (uint256 i; i < _synths.length; i++) {\n currencyKeys_[i] = synthToCurrencyKey[_synths[i]];\n }\n\n return currencyKeys_;\n }\n\n /// @notice Gets the `SUSD` variable\n /// @return susd_ The `SUSD` variable value\n function getSUSD() external view returns (address susd_) {\n return SUSD;\n }\n\n /// @notice Gets the currencyKey for a given Synth\n /// @return currencyKey_ The currencyKey value\n function getCurrencyKeyForSynth(address _synth) public view returns (bytes32 currencyKey_) {\n return synthToCurrencyKey[_synth];\n }\n}\n" }, "contracts/release/interfaces/ISynthetixAddressResolver.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title ISynthetixAddressResolver Interface\n/// @author Enzyme Council \ninterface ISynthetixAddressResolver {\n function requireAndGetAddress(bytes32, string calldata) external view returns (address);\n}\n" }, "contracts/release/interfaces/ISynthetixExchanger.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title ISynthetixExchanger Interface\n/// @author Enzyme Council \ninterface ISynthetixExchanger {\n function getAmountsForExchange(\n uint256,\n bytes32,\n bytes32\n )\n external\n view\n returns (\n uint256,\n uint256,\n uint256\n );\n\n function settle(address, bytes32)\n external\n returns (\n uint256,\n uint256,\n uint256\n );\n}\n" }, "contracts/release/interfaces/ISynthetix.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title ISynthetix Interface\n/// @author Enzyme Council \ninterface ISynthetix {\n function exchangeOnBehalfWithTracking(\n address,\n bytes32,\n uint256,\n bytes32,\n address,\n bytes32\n ) external returns (uint256);\n}\n" }, "contracts/release/interfaces/ISynthetixExchangeRates.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title ISynthetixExchangeRates Interface\n/// @author Enzyme Council \ninterface ISynthetixExchangeRates {\n function rateAndInvalid(bytes32) external view returns (uint256, bool);\n}\n" }, "contracts/release/interfaces/ISynthetixProxyERC20.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title ISynthetixProxyERC20 Interface\n/// @author Enzyme Council \ninterface ISynthetixProxyERC20 {\n function target() external view returns (address);\n}\n" }, "contracts/release/interfaces/ISynthetixSynth.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title ISynthetixSynth Interface\n/// @author Enzyme Council \ninterface ISynthetixSynth {\n function currencyKey() external view returns (bytes32);\n}\n" }, "contracts/release/infrastructure/utils/DispatcherOwnerMixin.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../../persistent/dispatcher/IDispatcher.sol\";\n\n/// @title DispatcherOwnerMixin Contract\n/// @author Enzyme Council \n/// @notice A mixin contract that defers ownership to the owner of Dispatcher\nabstract contract DispatcherOwnerMixin {\n address internal immutable DISPATCHER;\n\n modifier onlyDispatcherOwner() {\n require(\n msg.sender == getOwner(),\n \"onlyDispatcherOwner: Only the Dispatcher owner can call this function\"\n );\n _;\n }\n\n constructor(address _dispatcher) public {\n DISPATCHER = _dispatcher;\n }\n\n /// @notice Gets the owner of this contract\n /// @return owner_ The owner\n /// @dev Ownership is deferred to the owner of the Dispatcher contract\n function getOwner() public view returns (address owner_) {\n return IDispatcher(DISPATCHER).getOwner();\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `DISPATCHER` variable\n /// @return dispatcher_ The `DISPATCHER` variable value\n function getDispatcher() external view returns (address dispatcher_) {\n return DISPATCHER;\n }\n}\n" }, "contracts/release/infrastructure/price-feeds/derivatives/IDerivativePriceFeed.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IDerivativePriceFeed Interface\n/// @author Enzyme Council \n/// @notice Simple interface for derivative price source oracle implementations\ninterface IDerivativePriceFeed {\n function calcUnderlyingValues(address, uint256)\n external\n returns (address[] memory, uint256[] memory);\n\n function isSupportedAsset(address) external view returns (bool);\n}\n" }, "contracts/persistent/vault/VaultLibBase1.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"./VaultLibBaseCore.sol\";\n\n/// @title VaultLibBase1 Contract\n/// @author Enzyme Council \n/// @notice The first implementation of VaultLibBaseCore, with additional events and storage\n/// @dev All subsequent implementations should inherit the previous implementation,\n/// e.g., `VaultLibBase2 is VaultLibBase1`\n/// DO NOT EDIT CONTRACT.\nabstract contract VaultLibBase1 is VaultLibBaseCore {\n event AssetWithdrawn(address indexed asset, address indexed target, uint256 amount);\n\n event TrackedAssetAdded(address asset);\n\n event TrackedAssetRemoved(address asset);\n\n address[] internal trackedAssets;\n mapping(address => bool) internal assetToIsTracked;\n}\n" }, "contracts/persistent/vault/VaultLibBaseCore.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../utils/IMigratableVault.sol\";\nimport \"./utils/ProxiableVaultLib.sol\";\nimport \"./utils/SharesTokenBase.sol\";\n\n/// @title VaultLibBaseCore Contract\n/// @author Enzyme Council \n/// @notice A persistent contract containing all required storage variables and\n/// required functions for a VaultLib implementation\n/// @dev DO NOT EDIT CONTRACT. If new events or storage are necessary, they should be added to\n/// a numbered VaultLibBaseXXX that inherits the previous base. See VaultLibBase1.\nabstract contract VaultLibBaseCore is IMigratableVault, ProxiableVaultLib, SharesTokenBase {\n event AccessorSet(address prevAccessor, address nextAccessor);\n\n event MigratorSet(address prevMigrator, address nextMigrator);\n\n event OwnerSet(address prevOwner, address nextOwner);\n\n event VaultLibSet(address prevVaultLib, address nextVaultLib);\n\n address internal accessor;\n address internal creator;\n address internal migrator;\n address internal owner;\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Initializes the VaultProxy with core configuration\n /// @param _owner The address to set as the fund owner\n /// @param _accessor The address to set as the permissioned accessor of the VaultLib\n /// @param _fundName The name of the fund\n /// @dev Serves as a per-proxy pseudo-constructor\n function init(\n address _owner,\n address _accessor,\n string calldata _fundName\n ) external override {\n require(creator == address(0), \"init: Proxy already initialized\");\n creator = msg.sender;\n sharesName = _fundName;\n\n __setAccessor(_accessor);\n __setOwner(_owner);\n\n emit VaultLibSet(address(0), getVaultLib());\n }\n\n /// @notice Sets the permissioned accessor of the VaultLib\n /// @param _nextAccessor The address to set as the permissioned accessor of the VaultLib\n function setAccessor(address _nextAccessor) external override {\n require(msg.sender == creator, \"setAccessor: Only callable by the contract creator\");\n\n __setAccessor(_nextAccessor);\n }\n\n /// @notice Sets the VaultLib target for the VaultProxy\n /// @param _nextVaultLib The address to set as the VaultLib\n /// @dev This function is absolutely critical. __updateCodeAddress() validates that the\n /// target is a valid Proxiable contract instance.\n /// Does not block _nextVaultLib from being the same as the current VaultLib\n function setVaultLib(address _nextVaultLib) external override {\n require(msg.sender == creator, \"setVaultLib: Only callable by the contract creator\");\n\n address prevVaultLib = getVaultLib();\n\n __updateCodeAddress(_nextVaultLib);\n\n emit VaultLibSet(prevVaultLib, _nextVaultLib);\n }\n\n // PUBLIC FUNCTIONS\n\n /// @notice Checks whether an account is allowed to migrate the VaultProxy\n /// @param _who The account to check\n /// @return canMigrate_ True if the account is allowed to migrate the VaultProxy\n function canMigrate(address _who) public view virtual override returns (bool canMigrate_) {\n return _who == owner || _who == migrator;\n }\n\n /// @notice Gets the VaultLib target for the VaultProxy\n /// @return vaultLib_ The address of the VaultLib target\n function getVaultLib() public view returns (address vaultLib_) {\n assembly {\n // solium-disable-line\n vaultLib_ := sload(0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc)\n }\n return vaultLib_;\n }\n\n // INTERNAL FUNCTIONS\n\n /// @dev Helper to set the permissioned accessor of the VaultProxy.\n /// Does not prevent the prevAccessor from being the _nextAccessor.\n function __setAccessor(address _nextAccessor) internal {\n require(_nextAccessor != address(0), \"__setAccessor: _nextAccessor cannot be empty\");\n address prevAccessor = accessor;\n\n accessor = _nextAccessor;\n\n emit AccessorSet(prevAccessor, _nextAccessor);\n }\n\n /// @dev Helper to set the owner of the VaultProxy\n function __setOwner(address _nextOwner) internal {\n require(_nextOwner != address(0), \"__setOwner: _nextOwner cannot be empty\");\n address prevOwner = owner;\n require(_nextOwner != prevOwner, \"__setOwner: _nextOwner is the current owner\");\n\n owner = _nextOwner;\n\n emit OwnerSet(prevOwner, _nextOwner);\n }\n}\n" }, "contracts/persistent/vault/utils/ProxiableVaultLib.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title ProxiableVaultLib Contract\n/// @author Enzyme Council \n/// @notice A contract that defines the upgrade behavior for VaultLib instances\n/// @dev The recommended implementation of the target of a proxy according to EIP-1822 and EIP-1967\n/// Code position in storage is `bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)`,\n/// which is \"0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc\".\nabstract contract ProxiableVaultLib {\n /// @dev Updates the target of the proxy to be the contract at _nextVaultLib\n function __updateCodeAddress(address _nextVaultLib) internal {\n require(\n bytes32(0x027b9570e9fedc1a80b937ae9a06861e5faef3992491af30b684a64b3fbec7a5) ==\n ProxiableVaultLib(_nextVaultLib).proxiableUUID(),\n \"__updateCodeAddress: _nextVaultLib not compatible\"\n );\n assembly {\n // solium-disable-line\n sstore(\n 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc,\n _nextVaultLib\n )\n }\n }\n\n /// @notice Returns a unique bytes32 hash for VaultLib instances\n /// @return uuid_ The bytes32 hash representing the UUID\n /// @dev The UUID is `bytes32(keccak256('mln.proxiable.vaultlib'))`\n function proxiableUUID() public pure returns (bytes32 uuid_) {\n return 0x027b9570e9fedc1a80b937ae9a06861e5faef3992491af30b684a64b3fbec7a5;\n }\n}\n" }, "contracts/persistent/vault/utils/SharesTokenBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"./VaultLibSafeMath.sol\";\n\n/// @title StandardERC20 Contract\n/// @author Enzyme Council \n/// @notice Contains the storage, events, and default logic of an ERC20-compliant contract.\n/// @dev The logic can be overridden by VaultLib implementations.\n/// Adapted from OpenZeppelin 3.2.0.\n/// DO NOT EDIT THIS CONTRACT.\nabstract contract SharesTokenBase {\n using VaultLibSafeMath for uint256;\n\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n string internal sharesName;\n string internal sharesSymbol;\n uint256 internal sharesTotalSupply;\n mapping(address => uint256) internal sharesBalances;\n mapping(address => mapping(address => uint256)) internal sharesAllowances;\n\n // EXTERNAL FUNCTIONS\n\n /// @dev Standard implementation of ERC20's approve(). Can be overridden.\n function approve(address _spender, uint256 _amount) public virtual returns (bool) {\n __approve(msg.sender, _spender, _amount);\n return true;\n }\n\n /// @dev Standard implementation of ERC20's transfer(). Can be overridden.\n function transfer(address _recipient, uint256 _amount) public virtual returns (bool) {\n __transfer(msg.sender, _recipient, _amount);\n return true;\n }\n\n /// @dev Standard implementation of ERC20's transferFrom(). Can be overridden.\n function transferFrom(\n address _sender,\n address _recipient,\n uint256 _amount\n ) public virtual returns (bool) {\n __transfer(_sender, _recipient, _amount);\n __approve(\n _sender,\n msg.sender,\n sharesAllowances[_sender][msg.sender].sub(\n _amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n return true;\n }\n\n // EXTERNAL FUNCTIONS - VIEW\n\n /// @dev Standard implementation of ERC20's allowance(). Can be overridden.\n function allowance(address _owner, address _spender) public view virtual returns (uint256) {\n return sharesAllowances[_owner][_spender];\n }\n\n /// @dev Standard implementation of ERC20's balanceOf(). Can be overridden.\n function balanceOf(address _account) public view virtual returns (uint256) {\n return sharesBalances[_account];\n }\n\n /// @dev Standard implementation of ERC20's decimals(). Can not be overridden.\n function decimals() public pure returns (uint8) {\n return 18;\n }\n\n /// @dev Standard implementation of ERC20's name(). Can be overridden.\n function name() public view virtual returns (string memory) {\n return sharesName;\n }\n\n /// @dev Standard implementation of ERC20's symbol(). Can be overridden.\n function symbol() public view virtual returns (string memory) {\n return sharesSymbol;\n }\n\n /// @dev Standard implementation of ERC20's totalSupply(). Can be overridden.\n function totalSupply() public view virtual returns (uint256) {\n return sharesTotalSupply;\n }\n\n // INTERNAL FUNCTIONS\n\n /// @dev Helper for approve(). Can be overridden.\n function __approve(\n address _owner,\n address _spender,\n uint256 _amount\n ) internal virtual {\n require(_owner != address(0), \"ERC20: approve from the zero address\");\n require(_spender != address(0), \"ERC20: approve to the zero address\");\n\n sharesAllowances[_owner][_spender] = _amount;\n emit Approval(_owner, _spender, _amount);\n }\n\n /// @dev Helper to burn tokens from an account. Can be overridden.\n function __burn(address _account, uint256 _amount) internal virtual {\n require(_account != address(0), \"ERC20: burn from the zero address\");\n\n sharesBalances[_account] = sharesBalances[_account].sub(\n _amount,\n \"ERC20: burn amount exceeds balance\"\n );\n sharesTotalSupply = sharesTotalSupply.sub(_amount);\n emit Transfer(_account, address(0), _amount);\n }\n\n /// @dev Helper to mint tokens to an account. Can be overridden.\n function __mint(address _account, uint256 _amount) internal virtual {\n require(_account != address(0), \"ERC20: mint to the zero address\");\n\n sharesTotalSupply = sharesTotalSupply.add(_amount);\n sharesBalances[_account] = sharesBalances[_account].add(_amount);\n emit Transfer(address(0), _account, _amount);\n }\n\n /// @dev Helper to transfer tokens between accounts. Can be overridden.\n function __transfer(\n address _sender,\n address _recipient,\n uint256 _amount\n ) internal virtual {\n require(_sender != address(0), \"ERC20: transfer from the zero address\");\n require(_recipient != address(0), \"ERC20: transfer to the zero address\");\n\n sharesBalances[_sender] = sharesBalances[_sender].sub(\n _amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n sharesBalances[_recipient] = sharesBalances[_recipient].add(_amount);\n emit Transfer(_sender, _recipient, _amount);\n }\n}\n" }, "contracts/persistent/vault/utils/VaultLibSafeMath.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title VaultLibSafeMath library\n/// @notice A narrowed, verbatim implementation of OpenZeppelin 3.2.0 SafeMath\n/// for use with VaultLib\n/// @dev Preferred to importing from npm to guarantee consistent logic and revert reasons\n/// between VaultLib implementations\n/// DO NOT EDIT THIS CONTRACT\nlibrary VaultLibSafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n require(c >= a, \"VaultLibSafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"VaultLibSafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n require(c / a == b, \"VaultLibSafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"VaultLibSafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n uint256 c = a / b;\n\n return c;\n }\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return mod(a, b, \"VaultLibSafeMath: modulo by zero\");\n }\n\n function mod(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b != 0, errorMessage);\n return a % b;\n }\n}\n" }, "contracts/release/infrastructure/price-feeds/derivatives/IAggregatedDerivativePriceFeed.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"./IDerivativePriceFeed.sol\";\n\n/// @title IDerivativePriceFeed Interface\n/// @author Enzyme Council \ninterface IAggregatedDerivativePriceFeed is IDerivativePriceFeed {\n function getPriceFeedForDerivative(address) external view returns (address);\n}\n" }, "contracts/release/infrastructure/price-feeds/derivatives/feeds/UniswapV2PoolPriceFeed.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"../../../../interfaces/IUniswapV2Pair.sol\";\nimport \"../../../../utils/MathHelpers.sol\";\nimport \"../../../utils/DispatcherOwnerMixin.sol\";\nimport \"../../../value-interpreter/ValueInterpreter.sol\";\nimport \"../../primitives/IPrimitivePriceFeed.sol\";\nimport \"../../utils/UniswapV2PoolTokenValueCalculator.sol\";\nimport \"../IDerivativePriceFeed.sol\";\n\n/// @title UniswapV2PoolPriceFeed Contract\n/// @author Enzyme Council \n/// @notice Price feed for Uniswap lending pool tokens\ncontract UniswapV2PoolPriceFeed is\n IDerivativePriceFeed,\n DispatcherOwnerMixin,\n MathHelpers,\n UniswapV2PoolTokenValueCalculator\n{\n event PoolTokenAdded(address indexed poolToken, address token0, address token1);\n\n struct PoolTokenInfo {\n address token0;\n address token1;\n uint8 token0Decimals;\n uint8 token1Decimals;\n }\n\n uint256 private constant POOL_TOKEN_UNIT = 10**18;\n address private immutable DERIVATIVE_PRICE_FEED;\n address private immutable FACTORY;\n address private immutable PRIMITIVE_PRICE_FEED;\n address private immutable VALUE_INTERPRETER;\n\n mapping(address => PoolTokenInfo) private poolTokenToInfo;\n\n constructor(\n address _dispatcher,\n address _derivativePriceFeed,\n address _primitivePriceFeed,\n address _valueInterpreter,\n address _factory,\n address[] memory _poolTokens\n ) public DispatcherOwnerMixin(_dispatcher) {\n DERIVATIVE_PRICE_FEED = _derivativePriceFeed;\n FACTORY = _factory;\n PRIMITIVE_PRICE_FEED = _primitivePriceFeed;\n VALUE_INTERPRETER = _valueInterpreter;\n\n __addPoolTokens(_poolTokens, _derivativePriceFeed, _primitivePriceFeed);\n }\n\n /// @notice Converts a given amount of a derivative to its underlying asset values\n /// @param _derivative The derivative to convert\n /// @param _derivativeAmount The amount of the derivative to convert\n /// @return underlyings_ The underlying assets for the _derivative\n /// @return underlyingAmounts_ The amount of each underlying asset for the equivalent derivative amount\n function calcUnderlyingValues(address _derivative, uint256 _derivativeAmount)\n external\n override\n returns (address[] memory underlyings_, uint256[] memory underlyingAmounts_)\n {\n PoolTokenInfo memory poolTokenInfo = poolTokenToInfo[_derivative];\n\n underlyings_ = new address[](2);\n underlyings_[0] = poolTokenInfo.token0;\n underlyings_[1] = poolTokenInfo.token1;\n\n // Calculate the amounts underlying one unit of a pool token,\n // taking into account the known, trusted rate between the two underlyings\n (uint256 token0TrustedRateAmount, uint256 token1TrustedRateAmount) = __calcTrustedRate(\n poolTokenInfo.token0,\n poolTokenInfo.token1,\n poolTokenInfo.token0Decimals,\n poolTokenInfo.token1Decimals\n );\n\n (\n uint256 token0DenormalizedRate,\n uint256 token1DenormalizedRate\n ) = __calcTrustedPoolTokenValue(\n FACTORY,\n _derivative,\n token0TrustedRateAmount,\n token1TrustedRateAmount\n );\n\n // Define normalized rates for each underlying\n underlyingAmounts_ = new uint256[](2);\n underlyingAmounts_[0] = _derivativeAmount.mul(token0DenormalizedRate).div(POOL_TOKEN_UNIT);\n underlyingAmounts_[1] = _derivativeAmount.mul(token1DenormalizedRate).div(POOL_TOKEN_UNIT);\n\n return (underlyings_, underlyingAmounts_);\n }\n\n /// @notice Checks if an asset is supported by the price feed\n /// @param _asset The asset to check\n /// @return isSupported_ True if the asset is supported\n function isSupportedAsset(address _asset) public view override returns (bool isSupported_) {\n return poolTokenToInfo[_asset].token0 != address(0);\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Calculates the trusted rate of two assets based on our price feeds.\n /// Uses the decimals-derived unit for whichever asset is used as the quote asset.\n function __calcTrustedRate(\n address _token0,\n address _token1,\n uint256 _token0Decimals,\n uint256 _token1Decimals\n ) private returns (uint256 token0RateAmount_, uint256 token1RateAmount_) {\n bool rateIsValid;\n // The quote asset of the value lookup must be a supported primitive asset,\n // so we cycle through the tokens until reaching a primitive.\n // If neither is a primitive, will revert at the ValueInterpreter\n if (IPrimitivePriceFeed(PRIMITIVE_PRICE_FEED).isSupportedAsset(_token0)) {\n token1RateAmount_ = 10**_token1Decimals;\n (token0RateAmount_, rateIsValid) = ValueInterpreter(VALUE_INTERPRETER)\n .calcCanonicalAssetValue(_token1, token1RateAmount_, _token0);\n } else {\n token0RateAmount_ = 10**_token0Decimals;\n (token1RateAmount_, rateIsValid) = ValueInterpreter(VALUE_INTERPRETER)\n .calcCanonicalAssetValue(_token0, token0RateAmount_, _token1);\n }\n\n require(rateIsValid, \"__calcTrustedRate: Invalid rate\");\n\n return (token0RateAmount_, token1RateAmount_);\n }\n\n //////////////////////////\n // POOL TOKENS REGISTRY //\n //////////////////////////\n\n /// @notice Adds Uniswap pool tokens to the price feed\n /// @param _poolTokens Uniswap pool tokens to add\n function addPoolTokens(address[] calldata _poolTokens) external onlyDispatcherOwner {\n require(_poolTokens.length > 0, \"addPoolTokens: Empty _poolTokens\");\n\n __addPoolTokens(_poolTokens, DERIVATIVE_PRICE_FEED, PRIMITIVE_PRICE_FEED);\n }\n\n /// @dev Helper to add Uniswap pool tokens\n function __addPoolTokens(\n address[] memory _poolTokens,\n address _derivativePriceFeed,\n address _primitivePriceFeed\n ) private {\n for (uint256 i; i < _poolTokens.length; i++) {\n require(_poolTokens[i] != address(0), \"__addPoolTokens: Empty poolToken\");\n require(\n poolTokenToInfo[_poolTokens[i]].token0 == address(0),\n \"__addPoolTokens: Value already set\"\n );\n\n IUniswapV2Pair uniswapV2Pair = IUniswapV2Pair(_poolTokens[i]);\n address token0 = uniswapV2Pair.token0();\n address token1 = uniswapV2Pair.token1();\n\n require(\n __poolTokenIsSupportable(\n _derivativePriceFeed,\n _primitivePriceFeed,\n token0,\n token1\n ),\n \"__addPoolTokens: Unsupported pool token\"\n );\n\n poolTokenToInfo[_poolTokens[i]] = PoolTokenInfo({\n token0: token0,\n token1: token1,\n token0Decimals: ERC20(token0).decimals(),\n token1Decimals: ERC20(token1).decimals()\n });\n\n emit PoolTokenAdded(_poolTokens[i], token0, token1);\n }\n }\n\n /// @dev Helper to determine if a pool token is supportable, based on whether price feeds are\n /// available for its underlying feeds. At least one of the underlying tokens must be\n /// a supported primitive asset, and the other must be a primitive or derivative.\n function __poolTokenIsSupportable(\n address _derivativePriceFeed,\n address _primitivePriceFeed,\n address _token0,\n address _token1\n ) private view returns (bool isSupportable_) {\n IDerivativePriceFeed derivativePriceFeedContract = IDerivativePriceFeed(\n _derivativePriceFeed\n );\n IPrimitivePriceFeed primitivePriceFeedContract = IPrimitivePriceFeed(_primitivePriceFeed);\n\n if (primitivePriceFeedContract.isSupportedAsset(_token0)) {\n if (\n primitivePriceFeedContract.isSupportedAsset(_token1) ||\n derivativePriceFeedContract.isSupportedAsset(_token1)\n ) {\n return true;\n }\n } else if (\n derivativePriceFeedContract.isSupportedAsset(_token0) &&\n primitivePriceFeedContract.isSupportedAsset(_token1)\n ) {\n return true;\n }\n\n return false;\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `DERIVATIVE_PRICE_FEED` variable value\n /// @return derivativePriceFeed_ The `DERIVATIVE_PRICE_FEED` variable value\n function getDerivativePriceFeed() external view returns (address derivativePriceFeed_) {\n return DERIVATIVE_PRICE_FEED;\n }\n\n /// @notice Gets the `FACTORY` variable value\n /// @return factory_ The `FACTORY` variable value\n function getFactory() external view returns (address factory_) {\n return FACTORY;\n }\n\n /// @notice Gets the `PoolTokenInfo` for a given pool token\n /// @param _poolToken The pool token for which to get the `PoolTokenInfo`\n /// @return poolTokenInfo_ The `PoolTokenInfo` value\n function getPoolTokenInfo(address _poolToken)\n external\n view\n returns (PoolTokenInfo memory poolTokenInfo_)\n {\n return poolTokenToInfo[_poolToken];\n }\n\n /// @notice Gets the underlyings for a given pool token\n /// @param _poolToken The pool token for which to get its underlyings\n /// @return token0_ The UniswapV2Pair.token0 value\n /// @return token1_ The UniswapV2Pair.token1 value\n function getPoolTokenUnderlyings(address _poolToken)\n external\n view\n returns (address token0_, address token1_)\n {\n return (poolTokenToInfo[_poolToken].token0, poolTokenToInfo[_poolToken].token1);\n }\n\n /// @notice Gets the `PRIMITIVE_PRICE_FEED` variable value\n /// @return primitivePriceFeed_ The `PRIMITIVE_PRICE_FEED` variable value\n function getPrimitivePriceFeed() external view returns (address primitivePriceFeed_) {\n return PRIMITIVE_PRICE_FEED;\n }\n\n /// @notice Gets the `VALUE_INTERPRETER` variable value\n /// @return valueInterpreter_ The `VALUE_INTERPRETER` variable value\n function getValueInterpreter() external view returns (address valueInterpreter_) {\n return VALUE_INTERPRETER;\n }\n}\n" }, "contracts/release/interfaces/IUniswapV2Pair.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IUniswapV2Pair Interface\n/// @author Enzyme Council \n/// @notice Minimal interface for our interactions with the Uniswap V2's Pair contract\ninterface IUniswapV2Pair {\n function getReserves()\n external\n view\n returns (\n uint112,\n uint112,\n uint32\n );\n\n function kLast() external view returns (uint256);\n\n function token0() external view returns (address);\n\n function token1() external view returns (address);\n\n function totalSupply() external view returns (uint256);\n}\n" }, "contracts/release/infrastructure/price-feeds/utils/UniswapV2PoolTokenValueCalculator.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../../interfaces/IUniswapV2Factory.sol\";\nimport \"../../../interfaces/IUniswapV2Pair.sol\";\n\n/// @title UniswapV2PoolTokenValueCalculator Contract\n/// @author Enzyme Council \n/// @notice Abstract contract for computing the value of Uniswap liquidity pool tokens\n/// @dev Unless otherwise noted, these functions are adapted to our needs and style guide from\n/// an un-merged Uniswap branch:\n/// https://github.com/Uniswap/uniswap-v2-periphery/blob/267ba44471f3357071a2fe2573fe4da42d5ad969/contracts/libraries/UniswapV2LiquidityMathLibrary.sol\nabstract contract UniswapV2PoolTokenValueCalculator {\n using SafeMath for uint256;\n\n uint256 private constant POOL_TOKEN_UNIT = 10**18;\n\n // INTERNAL FUNCTIONS\n\n /// @dev Given a Uniswap pool with token0 and token1 and their trusted rate,\n /// returns the value of one pool token unit in terms of token0 and token1.\n /// This is the only function used outside of this contract.\n function __calcTrustedPoolTokenValue(\n address _factory,\n address _pair,\n uint256 _token0TrustedRateAmount,\n uint256 _token1TrustedRateAmount\n ) internal view returns (uint256 token0Amount_, uint256 token1Amount_) {\n (uint256 reserve0, uint256 reserve1) = __calcReservesAfterArbitrage(\n _pair,\n _token0TrustedRateAmount,\n _token1TrustedRateAmount\n );\n\n return __calcPoolTokenValue(_factory, _pair, reserve0, reserve1);\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Computes liquidity value given all the parameters of the pair\n function __calcPoolTokenValue(\n address _factory,\n address _pair,\n uint256 _reserve0,\n uint256 _reserve1\n ) private view returns (uint256 token0Amount_, uint256 token1Amount_) {\n IUniswapV2Pair pairContract = IUniswapV2Pair(_pair);\n uint256 totalSupply = pairContract.totalSupply();\n\n if (IUniswapV2Factory(_factory).feeTo() != address(0)) {\n uint256 kLast = pairContract.kLast();\n if (kLast > 0) {\n uint256 rootK = __uniswapSqrt(_reserve0.mul(_reserve1));\n uint256 rootKLast = __uniswapSqrt(kLast);\n if (rootK > rootKLast) {\n uint256 numerator = totalSupply.mul(rootK.sub(rootKLast));\n uint256 denominator = rootK.mul(5).add(rootKLast);\n uint256 feeLiquidity = numerator.div(denominator);\n totalSupply = totalSupply.add(feeLiquidity);\n }\n }\n }\n return (\n _reserve0.mul(POOL_TOKEN_UNIT).div(totalSupply),\n _reserve1.mul(POOL_TOKEN_UNIT).div(totalSupply)\n );\n }\n\n /// @dev Calculates the direction and magnitude of the profit-maximizing trade\n function __calcProfitMaximizingTrade(\n uint256 _token0TrustedRateAmount,\n uint256 _token1TrustedRateAmount,\n uint256 _reserve0,\n uint256 _reserve1\n ) private pure returns (bool token0ToToken1_, uint256 amountIn_) {\n token0ToToken1_ =\n _reserve0.mul(_token1TrustedRateAmount).div(_reserve1) < _token0TrustedRateAmount;\n\n uint256 leftSide;\n uint256 rightSide;\n if (token0ToToken1_) {\n leftSide = __uniswapSqrt(\n _reserve0.mul(_reserve1).mul(_token0TrustedRateAmount).mul(1000).div(\n _token1TrustedRateAmount.mul(997)\n )\n );\n rightSide = _reserve0.mul(1000).div(997);\n } else {\n leftSide = __uniswapSqrt(\n _reserve0.mul(_reserve1).mul(_token1TrustedRateAmount).mul(1000).div(\n _token0TrustedRateAmount.mul(997)\n )\n );\n rightSide = _reserve1.mul(1000).div(997);\n }\n\n if (leftSide < rightSide) {\n return (false, 0);\n }\n\n // Calculate the amount that must be sent to move the price to the profit-maximizing price\n amountIn_ = leftSide.sub(rightSide);\n\n return (token0ToToken1_, amountIn_);\n }\n\n /// @dev Calculates the pool reserves after an arbitrage moves the price to\n /// the profit-maximizing rate, given an externally-observed trusted rate\n /// between the two pooled assets\n function __calcReservesAfterArbitrage(\n address _pair,\n uint256 _token0TrustedRateAmount,\n uint256 _token1TrustedRateAmount\n ) private view returns (uint256 reserve0_, uint256 reserve1_) {\n (reserve0_, reserve1_, ) = IUniswapV2Pair(_pair).getReserves();\n\n // Skip checking whether the reserve is 0, as this is extremely unlikely given how\n // initial pool liquidity is locked, and since we maintain a list of registered pool tokens\n\n // Calculate how much to swap to arb to the trusted price\n (bool token0ToToken1, uint256 amountIn) = __calcProfitMaximizingTrade(\n _token0TrustedRateAmount,\n _token1TrustedRateAmount,\n reserve0_,\n reserve1_\n );\n if (amountIn == 0) {\n return (reserve0_, reserve1_);\n }\n\n // Adjust the reserves to account for the arb trade to the trusted price\n if (token0ToToken1) {\n uint256 amountOut = __uniswapV2GetAmountOut(amountIn, reserve0_, reserve1_);\n reserve0_ = reserve0_.add(amountIn);\n reserve1_ = reserve1_.sub(amountOut);\n } else {\n uint256 amountOut = __uniswapV2GetAmountOut(amountIn, reserve1_, reserve0_);\n reserve1_ = reserve1_.add(amountIn);\n reserve0_ = reserve0_.sub(amountOut);\n }\n\n return (reserve0_, reserve1_);\n }\n\n /// @dev Uniswap square root function. See:\n /// https://github.com/Uniswap/uniswap-lib/blob/6ddfedd5716ba85b905bf34d7f1f3c659101a1bc/contracts/libraries/Babylonian.sol\n function __uniswapSqrt(uint256 _y) private pure returns (uint256 z_) {\n if (_y > 3) {\n z_ = _y;\n uint256 x = _y / 2 + 1;\n while (x < z_) {\n z_ = x;\n x = (_y / x + x) / 2;\n }\n } else if (_y != 0) {\n z_ = 1;\n }\n // else z_ = 0\n\n return z_;\n }\n\n /// @dev Simplified version of UniswapV2Library's getAmountOut() function. See:\n /// https://github.com/Uniswap/uniswap-v2-periphery/blob/87edfdcaf49ccc52591502993db4c8c08ea9eec0/contracts/libraries/UniswapV2Library.sol#L42-L50\n function __uniswapV2GetAmountOut(\n uint256 _amountIn,\n uint256 _reserveIn,\n uint256 _reserveOut\n ) private pure returns (uint256 amountOut_) {\n uint256 amountInWithFee = _amountIn.mul(997);\n uint256 numerator = amountInWithFee.mul(_reserveOut);\n uint256 denominator = _reserveIn.mul(1000).add(amountInWithFee);\n\n return numerator.div(denominator);\n }\n}\n" }, "contracts/release/interfaces/IUniswapV2Factory.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IUniswapV2Factory Interface\n/// @author Enzyme Council \n/// @notice Minimal interface for our interactions with the Uniswap V2's Factory contract\ninterface IUniswapV2Factory {\n function feeTo() external view returns (address);\n\n function getPair(address, address) external view returns (address);\n}\n" }, "contracts/release/infrastructure/price-feeds/derivatives/feeds/WdgldPriceFeed.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../../../interfaces/IChainlinkAggregator.sol\";\nimport \"../../../../utils/MakerDaoMath.sol\";\nimport \"../IDerivativePriceFeed.sol\";\n\n/// @title WdgldPriceFeed Contract\n/// @author Enzyme Council \n/// @notice Price source oracle for WDGLD \ncontract WdgldPriceFeed is IDerivativePriceFeed, MakerDaoMath {\n using SafeMath for uint256;\n\n address private immutable XAU_AGGREGATOR;\n address private immutable ETH_AGGREGATOR;\n\n address private immutable WDGLD;\n address private immutable WETH;\n\n // GTR_CONSTANT aggregates all the invariants in the GTR formula to save gas\n uint256 private constant GTR_CONSTANT = 999990821653213975346065101;\n uint256 private constant GTR_PRECISION = 10**27;\n uint256 private constant WDGLD_GENESIS_TIMESTAMP = 1568700000;\n\n constructor(\n address _wdgld,\n address _weth,\n address _ethAggregator,\n address _xauAggregator\n ) public {\n WDGLD = _wdgld;\n WETH = _weth;\n ETH_AGGREGATOR = _ethAggregator;\n XAU_AGGREGATOR = _xauAggregator;\n }\n\n /// @notice Converts a given amount of a derivative to its underlying asset values\n /// @param _derivative The derivative to convert\n /// @param _derivativeAmount The amount of the derivative to convert\n /// @return underlyings_ The underlying assets for the _derivative\n /// @return underlyingAmounts_ The amount of each underlying asset for the equivalent derivative amount\n function calcUnderlyingValues(address _derivative, uint256 _derivativeAmount)\n external\n override\n returns (address[] memory underlyings_, uint256[] memory underlyingAmounts_)\n {\n require(isSupportedAsset(_derivative), \"calcUnderlyingValues: Only WDGLD is supported\");\n\n underlyings_ = new address[](1);\n underlyings_[0] = WETH;\n underlyingAmounts_ = new uint256[](1);\n\n // Get price rates from xau and eth aggregators\n int256 xauToUsdRate = IChainlinkAggregator(XAU_AGGREGATOR).latestAnswer();\n int256 ethToUsdRate = IChainlinkAggregator(ETH_AGGREGATOR).latestAnswer();\n require(xauToUsdRate > 0 && ethToUsdRate > 0, \"calcUnderlyingValues: rate invalid\");\n\n uint256 wdgldToXauRate = calcWdgldToXauRate();\n\n // 10**17 is a combination of ETH_UNIT / WDGLD_UNIT * GTR_PRECISION\n underlyingAmounts_[0] = _derivativeAmount\n .mul(wdgldToXauRate)\n .mul(uint256(xauToUsdRate))\n .div(uint256(ethToUsdRate))\n .div(10**17);\n\n return (underlyings_, underlyingAmounts_);\n }\n\n /// @notice Calculates the rate of WDGLD to XAU.\n /// @return wdgldToXauRate_ The current rate of WDGLD to XAU\n /// @dev Full formula available \n function calcWdgldToXauRate() public view returns (uint256 wdgldToXauRate_) {\n return\n __rpow(\n GTR_CONSTANT,\n ((block.timestamp).sub(WDGLD_GENESIS_TIMESTAMP)).div(28800), // 60 * 60 * 8 (8 hour periods)\n GTR_PRECISION\n )\n .div(10);\n }\n\n /// @notice Checks if an asset is supported by this price feed\n /// @param _asset The asset to check\n /// @return isSupported_ True if supported\n function isSupportedAsset(address _asset) public view override returns (bool isSupported_) {\n return _asset == WDGLD;\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `ETH_AGGREGATOR` address\n /// @return ethAggregatorAddress_ The `ETH_AGGREGATOR` address\n function getEthAggregator() external view returns (address ethAggregatorAddress_) {\n return ETH_AGGREGATOR;\n }\n\n /// @notice Gets the `WDGLD` token address\n /// @return wdgld_ The `WDGLD` token address\n function getWdgld() external view returns (address wdgld_) {\n return WDGLD;\n }\n\n /// @notice Gets the `WETH` token address\n /// @return weth_ The `WETH` token address\n function getWeth() external view returns (address weth_) {\n return WETH;\n }\n\n /// @notice Gets the `XAU_AGGREGATOR` address\n /// @return xauAggregatorAddress_ The `XAU_AGGREGATOR` address\n function getXauAggregator() external view returns (address xauAggregatorAddress_) {\n return XAU_AGGREGATOR;\n }\n}\n" }, "contracts/release/interfaces/IChainlinkAggregator.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IChainlinkAggregator Interface\n/// @author Enzyme Council \ninterface IChainlinkAggregator {\n function latestAnswer() external view returns (int256);\n\n function latestTimestamp() external view returns (uint256);\n}\n" }, "contracts/release/utils/MakerDaoMath.sol": { "content": "// SPDX-License-Identifier: AGPL-3.0-or-later\n\n// Copyright (C) 2018 Rain \n//\n// This program is free software: you can redistribute it and/or modify\n// it under the terms of the GNU Affero General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// This program is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n// GNU Affero General Public License for more details.\n//\n// You should have received a copy of the GNU Affero General Public License\n// along with this program. If not, see .\n\npragma solidity 0.6.12;\n\n/// @title MakerDaoMath Contract\n/// @author Enzyme Council \n/// @notice Helper functions for math operations adapted from MakerDao contracts\nabstract contract MakerDaoMath {\n /// @dev Performs scaled, fixed-point exponentiation.\n /// Verbatim code, adapted to our style guide for variable naming only, see:\n /// https://github.com/makerdao/dss/blob/master/src/pot.sol#L83-L105\n // prettier-ignore\n function __rpow(uint256 _x, uint256 _n, uint256 _base) internal pure returns (uint256 z_) {\n assembly {\n switch _x case 0 {switch _n case 0 {z_ := _base} default {z_ := 0}}\n default {\n switch mod(_n, 2) case 0 { z_ := _base } default { z_ := _x }\n let half := div(_base, 2)\n for { _n := div(_n, 2) } _n { _n := div(_n,2) } {\n let xx := mul(_x, _x)\n if iszero(eq(div(xx, _x), _x)) { revert(0,0) }\n let xxRound := add(xx, half)\n if lt(xxRound, xx) { revert(0,0) }\n _x := div(xxRound, _base)\n if mod(_n,2) {\n let zx := mul(z_, _x)\n if and(iszero(iszero(_x)), iszero(eq(div(zx, _x), z_))) { revert(0,0) }\n let zxRound := add(zx, half)\n if lt(zxRound, zx) { revert(0,0) }\n z_ := div(zxRound, _base)\n }\n }\n }\n }\n\n return z_;\n }\n}\n" }, "contracts/release/extensions/fee-manager/fees/ManagementFee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../../core/fund/vault/VaultLib.sol\";\nimport \"../../../utils/MakerDaoMath.sol\";\nimport \"./utils/FeeBase.sol\";\n\n/// @title ManagementFee Contract\n/// @author Enzyme Council \n/// @notice A management fee with a configurable annual rate\ncontract ManagementFee is FeeBase, MakerDaoMath {\n using SafeMath for uint256;\n\n event FundSettingsAdded(address indexed comptrollerProxy, uint256 scaledPerSecondRate);\n\n event Settled(\n address indexed comptrollerProxy,\n uint256 sharesQuantity,\n uint256 secondsSinceSettlement\n );\n\n struct FeeInfo {\n uint256 scaledPerSecondRate;\n uint256 lastSettled;\n }\n\n uint256 private constant RATE_SCALE_BASE = 10**27;\n\n mapping(address => FeeInfo) private comptrollerProxyToFeeInfo;\n\n constructor(address _feeManager) public FeeBase(_feeManager) {}\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Activates the fee for a fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _vaultProxy The VaultProxy of the fund\n function activateForFund(address _comptrollerProxy, address _vaultProxy)\n external\n override\n onlyFeeManager\n {\n // It is only necessary to set `lastSettled` for a migrated fund\n if (VaultLib(_vaultProxy).totalSupply() > 0) {\n comptrollerProxyToFeeInfo[_comptrollerProxy].lastSettled = block.timestamp;\n }\n }\n\n /// @notice Add the initial fee settings for a fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _settingsData Encoded settings to apply to the fee for a fund\n function addFundSettings(address _comptrollerProxy, bytes calldata _settingsData)\n external\n override\n onlyFeeManager\n {\n uint256 scaledPerSecondRate = abi.decode(_settingsData, (uint256));\n require(\n scaledPerSecondRate > 0,\n \"addFundSettings: scaledPerSecondRate must be greater than 0\"\n );\n\n comptrollerProxyToFeeInfo[_comptrollerProxy] = FeeInfo({\n scaledPerSecondRate: scaledPerSecondRate,\n lastSettled: 0\n });\n\n emit FundSettingsAdded(_comptrollerProxy, scaledPerSecondRate);\n }\n\n /// @notice Provides a constant string identifier for a fee\n /// @return identifier_ The identifier string\n function identifier() external pure override returns (string memory identifier_) {\n return \"MANAGEMENT\";\n }\n\n /// @notice Gets the hooks that are implemented by the fee\n /// @return implementedHooksForSettle_ The hooks during which settle() is implemented\n /// @return implementedHooksForUpdate_ The hooks during which update() is implemented\n /// @return usesGavOnSettle_ True if GAV is used during the settle() implementation\n /// @return usesGavOnUpdate_ True if GAV is used during the update() implementation\n /// @dev Used only during fee registration\n function implementedHooks()\n external\n view\n override\n returns (\n IFeeManager.FeeHook[] memory implementedHooksForSettle_,\n IFeeManager.FeeHook[] memory implementedHooksForUpdate_,\n bool usesGavOnSettle_,\n bool usesGavOnUpdate_\n )\n {\n implementedHooksForSettle_ = new IFeeManager.FeeHook[](3);\n implementedHooksForSettle_[0] = IFeeManager.FeeHook.Continuous;\n implementedHooksForSettle_[1] = IFeeManager.FeeHook.BuySharesSetup;\n implementedHooksForSettle_[2] = IFeeManager.FeeHook.PreRedeemShares;\n\n return (implementedHooksForSettle_, new IFeeManager.FeeHook[](0), false, false);\n }\n\n /// @notice Settle the fee and calculate shares due\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _vaultProxy The VaultProxy of the fund\n /// @return settlementType_ The type of settlement\n /// @return (unused) The payer of shares due\n /// @return sharesDue_ The amount of shares due\n function settle(\n address _comptrollerProxy,\n address _vaultProxy,\n IFeeManager.FeeHook,\n bytes calldata,\n uint256\n )\n external\n override\n onlyFeeManager\n returns (\n IFeeManager.SettlementType settlementType_,\n address,\n uint256 sharesDue_\n )\n {\n FeeInfo storage feeInfo = comptrollerProxyToFeeInfo[_comptrollerProxy];\n\n // If this fee was settled in the current block, we can return early\n uint256 secondsSinceSettlement = block.timestamp.sub(feeInfo.lastSettled);\n if (secondsSinceSettlement == 0) {\n return (IFeeManager.SettlementType.None, address(0), 0);\n }\n\n // If there are shares issued for the fund, calculate the shares due\n VaultLib vaultProxyContract = VaultLib(_vaultProxy);\n uint256 sharesSupply = vaultProxyContract.totalSupply();\n if (sharesSupply > 0) {\n // This assumes that all shares in the VaultProxy are shares outstanding,\n // which is fine for this release. Even if they are not, they are still shares that\n // are only claimable by the fund owner.\n uint256 netSharesSupply = sharesSupply.sub(vaultProxyContract.balanceOf(_vaultProxy));\n if (netSharesSupply > 0) {\n sharesDue_ = netSharesSupply\n .mul(\n __rpow(feeInfo.scaledPerSecondRate, secondsSinceSettlement, RATE_SCALE_BASE)\n .sub(RATE_SCALE_BASE)\n )\n .div(RATE_SCALE_BASE);\n }\n }\n\n // Must settle even when no shares are due, for the case that settlement is being\n // done when there are no shares in the fund (i.e. at the first investment, or at the\n // first investment after all shares have been redeemed)\n comptrollerProxyToFeeInfo[_comptrollerProxy].lastSettled = block.timestamp;\n emit Settled(_comptrollerProxy, sharesDue_, secondsSinceSettlement);\n\n if (sharesDue_ == 0) {\n return (IFeeManager.SettlementType.None, address(0), 0);\n }\n\n return (IFeeManager.SettlementType.Mint, address(0), sharesDue_);\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the feeInfo for a given fund\n /// @param _comptrollerProxy The ComptrollerProxy contract of the fund\n /// @return feeInfo_ The feeInfo\n function getFeeInfoForFund(address _comptrollerProxy)\n external\n view\n returns (FeeInfo memory feeInfo_)\n {\n return comptrollerProxyToFeeInfo[_comptrollerProxy];\n }\n}\n" }, "contracts/release/extensions/fee-manager/fees/utils/FeeBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../IFee.sol\";\n\n/// @title FeeBase Contract\n/// @author Enzyme Council \n/// @notice Abstract base contract for all fees\nabstract contract FeeBase is IFee {\n address internal immutable FEE_MANAGER;\n\n modifier onlyFeeManager {\n require(msg.sender == FEE_MANAGER, \"Only the FeeManger can make this call\");\n _;\n }\n\n constructor(address _feeManager) public {\n FEE_MANAGER = _feeManager;\n }\n\n /// @notice Allows Fee to run logic during fund activation\n /// @dev Unimplemented by default, may be overrode.\n function activateForFund(address, address) external virtual override {\n return;\n }\n\n /// @notice Runs payout logic for a fee that utilizes shares outstanding as its settlement type\n /// @dev Returns false by default, can be overridden by fee\n function payout(address, address) external virtual override returns (bool) {\n return false;\n }\n\n /// @notice Update fee state after all settlement has occurred during a given fee hook\n /// @dev Unimplemented by default, can be overridden by fee\n function update(\n address,\n address,\n IFeeManager.FeeHook,\n bytes calldata,\n uint256\n ) external virtual override {\n return;\n }\n\n /// @notice Helper to parse settlement arguments from encoded data for PreBuyShares fee hook\n function __decodePreBuySharesSettlementData(bytes memory _settlementData)\n internal\n pure\n returns (\n address buyer_,\n uint256 investmentAmount_,\n uint256 minSharesQuantity_\n )\n {\n return abi.decode(_settlementData, (address, uint256, uint256));\n }\n\n /// @notice Helper to parse settlement arguments from encoded data for PreRedeemShares fee hook\n function __decodePreRedeemSharesSettlementData(bytes memory _settlementData)\n internal\n pure\n returns (address redeemer_, uint256 sharesQuantity_)\n {\n return abi.decode(_settlementData, (address, uint256));\n }\n\n /// @notice Helper to parse settlement arguments from encoded data for PostBuyShares fee hook\n function __decodePostBuySharesSettlementData(bytes memory _settlementData)\n internal\n pure\n returns (\n address buyer_,\n uint256 investmentAmount_,\n uint256 sharesBought_\n )\n {\n return abi.decode(_settlementData, (address, uint256, uint256));\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `FEE_MANAGER` variable\n /// @return feeManager_ The `FEE_MANAGER` variable value\n function getFeeManager() external view returns (address feeManager_) {\n return FEE_MANAGER;\n }\n}\n" }, "contracts/release/extensions/fee-manager/IFee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"./IFeeManager.sol\";\n\n/// @title Fee Interface\n/// @author Enzyme Council \n/// @notice Interface for all fees\ninterface IFee {\n function activateForFund(address _comptrollerProxy, address _vaultProxy) external;\n\n function addFundSettings(address _comptrollerProxy, bytes calldata _settingsData) external;\n\n function identifier() external pure returns (string memory identifier_);\n\n function implementedHooks()\n external\n view\n returns (\n IFeeManager.FeeHook[] memory implementedHooksForSettle_,\n IFeeManager.FeeHook[] memory implementedHooksForUpdate_,\n bool usesGavOnSettle_,\n bool usesGavOnUpdate_\n );\n\n function payout(address _comptrollerProxy, address _vaultProxy)\n external\n returns (bool isPayable_);\n\n function settle(\n address _comptrollerProxy,\n address _vaultProxy,\n IFeeManager.FeeHook _hook,\n bytes calldata _settlementData,\n uint256 _gav\n )\n external\n returns (\n IFeeManager.SettlementType settlementType_,\n address payer_,\n uint256 sharesDue_\n );\n\n function update(\n address _comptrollerProxy,\n address _vaultProxy,\n IFeeManager.FeeHook _hook,\n bytes calldata _settlementData,\n uint256 _gav\n ) external;\n}\n" }, "contracts/release/extensions/fee-manager/fees/PerformanceFee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"@openzeppelin/contracts/math/SignedSafeMath.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"../../../core/fund/comptroller/ComptrollerLib.sol\";\nimport \"../FeeManager.sol\";\nimport \"./utils/FeeBase.sol\";\n\n/// @title PerformanceFee Contract\n/// @author Enzyme Council \n/// @notice A performance-based fee with configurable rate and crystallization period, using\n/// a high watermark\n/// @dev This contract assumes that all shares in the VaultProxy are shares outstanding,\n/// which is fine for this release. Even if they are not, they are still shares that\n/// are only claimable by the fund owner.\ncontract PerformanceFee is FeeBase {\n using SafeMath for uint256;\n using SignedSafeMath for int256;\n\n event ActivatedForFund(address indexed comptrollerProxy, uint256 highWaterMark);\n\n event FundSettingsAdded(address indexed comptrollerProxy, uint256 rate, uint256 period);\n\n event LastSharePriceUpdated(\n address indexed comptrollerProxy,\n uint256 prevSharePrice,\n uint256 nextSharePrice\n );\n\n event PaidOut(\n address indexed comptrollerProxy,\n uint256 prevHighWaterMark,\n uint256 nextHighWaterMark,\n uint256 aggregateValueDue\n );\n\n event PerformanceUpdated(\n address indexed comptrollerProxy,\n uint256 prevAggregateValueDue,\n uint256 nextAggregateValueDue,\n int256 sharesOutstandingDiff\n );\n\n struct FeeInfo {\n uint256 rate;\n uint256 period;\n uint256 activated;\n uint256 lastPaid;\n uint256 highWaterMark;\n uint256 lastSharePrice;\n uint256 aggregateValueDue;\n }\n\n uint256 private constant RATE_DIVISOR = 10**18;\n uint256 private constant SHARE_UNIT = 10**18;\n\n mapping(address => FeeInfo) private comptrollerProxyToFeeInfo;\n\n constructor(address _feeManager) public FeeBase(_feeManager) {}\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Activates the fee for a fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n function activateForFund(address _comptrollerProxy, address) external override onlyFeeManager {\n FeeInfo storage feeInfo = comptrollerProxyToFeeInfo[_comptrollerProxy];\n\n // We must not force asset finality, otherwise funds that have Synths as tracked assets\n // would be susceptible to a DoS attack when attempting to migrate to a release that uses\n // this fee: an attacker trades a negligible amount of a tracked Synth with the VaultProxy\n // as the recipient, thus causing `calcGrossShareValue(true)` to fail.\n (uint256 grossSharePrice, bool sharePriceIsValid) = ComptrollerLib(_comptrollerProxy)\n .calcGrossShareValue(false);\n require(sharePriceIsValid, \"activateForFund: Invalid share price\");\n\n feeInfo.highWaterMark = grossSharePrice;\n feeInfo.lastSharePrice = grossSharePrice;\n feeInfo.activated = block.timestamp;\n\n emit ActivatedForFund(_comptrollerProxy, grossSharePrice);\n }\n\n /// @notice Add the initial fee settings for a fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _settingsData Encoded settings to apply to the policy for the fund\n /// @dev `highWaterMark`, `lastSharePrice`, and `activated` are set during activation\n function addFundSettings(address _comptrollerProxy, bytes calldata _settingsData)\n external\n override\n onlyFeeManager\n {\n (uint256 feeRate, uint256 feePeriod) = abi.decode(_settingsData, (uint256, uint256));\n require(feeRate > 0, \"addFundSettings: feeRate must be greater than 0\");\n require(feePeriod > 0, \"addFundSettings: feePeriod must be greater than 0\");\n\n comptrollerProxyToFeeInfo[_comptrollerProxy] = FeeInfo({\n rate: feeRate,\n period: feePeriod,\n activated: 0,\n lastPaid: 0,\n highWaterMark: 0,\n lastSharePrice: 0,\n aggregateValueDue: 0\n });\n\n emit FundSettingsAdded(_comptrollerProxy, feeRate, feePeriod);\n }\n\n /// @notice Provides a constant string identifier for a fee\n /// @return identifier_ The identifier string\n function identifier() external pure override returns (string memory identifier_) {\n return \"PERFORMANCE\";\n }\n\n /// @notice Gets the hooks that are implemented by the fee\n /// @return implementedHooksForSettle_ The hooks during which settle() is implemented\n /// @return implementedHooksForUpdate_ The hooks during which update() is implemented\n /// @return usesGavOnSettle_ True if GAV is used during the settle() implementation\n /// @return usesGavOnUpdate_ True if GAV is used during the update() implementation\n /// @dev Used only during fee registration\n function implementedHooks()\n external\n view\n override\n returns (\n IFeeManager.FeeHook[] memory implementedHooksForSettle_,\n IFeeManager.FeeHook[] memory implementedHooksForUpdate_,\n bool usesGavOnSettle_,\n bool usesGavOnUpdate_\n )\n {\n implementedHooksForSettle_ = new IFeeManager.FeeHook[](3);\n implementedHooksForSettle_[0] = IFeeManager.FeeHook.Continuous;\n implementedHooksForSettle_[1] = IFeeManager.FeeHook.BuySharesSetup;\n implementedHooksForSettle_[2] = IFeeManager.FeeHook.PreRedeemShares;\n\n implementedHooksForUpdate_ = new IFeeManager.FeeHook[](3);\n implementedHooksForUpdate_[0] = IFeeManager.FeeHook.Continuous;\n implementedHooksForUpdate_[1] = IFeeManager.FeeHook.BuySharesCompleted;\n implementedHooksForUpdate_[2] = IFeeManager.FeeHook.PreRedeemShares;\n\n return (implementedHooksForSettle_, implementedHooksForUpdate_, true, true);\n }\n\n /// @notice Checks whether the shares outstanding for the fee can be paid out, and updates\n /// the info for the fee's last payout\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @return isPayable_ True if shares outstanding can be paid out\n function payout(address _comptrollerProxy, address)\n external\n override\n onlyFeeManager\n returns (bool isPayable_)\n {\n if (!payoutAllowed(_comptrollerProxy)) {\n return false;\n }\n\n FeeInfo storage feeInfo = comptrollerProxyToFeeInfo[_comptrollerProxy];\n feeInfo.lastPaid = block.timestamp;\n\n uint256 prevHighWaterMark = feeInfo.highWaterMark;\n uint256 nextHighWaterMark = __calcUint256Max(feeInfo.lastSharePrice, prevHighWaterMark);\n uint256 prevAggregateValueDue = feeInfo.aggregateValueDue;\n\n // Update state as necessary\n if (prevAggregateValueDue > 0) {\n feeInfo.aggregateValueDue = 0;\n }\n if (nextHighWaterMark > prevHighWaterMark) {\n feeInfo.highWaterMark = nextHighWaterMark;\n }\n\n emit PaidOut(\n _comptrollerProxy,\n prevHighWaterMark,\n nextHighWaterMark,\n prevAggregateValueDue\n );\n\n return true;\n }\n\n /// @notice Settles the fee and calculates shares due\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _vaultProxy The VaultProxy of the fund\n /// @param _gav The GAV of the fund\n /// @return settlementType_ The type of settlement\n /// @return (unused) The payer of shares due\n /// @return sharesDue_ The amount of shares due\n function settle(\n address _comptrollerProxy,\n address _vaultProxy,\n IFeeManager.FeeHook,\n bytes calldata,\n uint256 _gav\n )\n external\n override\n onlyFeeManager\n returns (\n IFeeManager.SettlementType settlementType_,\n address,\n uint256 sharesDue_\n )\n {\n if (_gav == 0) {\n return (IFeeManager.SettlementType.None, address(0), 0);\n }\n\n int256 settlementSharesDue = __settleAndUpdatePerformance(\n _comptrollerProxy,\n _vaultProxy,\n _gav\n );\n if (settlementSharesDue == 0) {\n return (IFeeManager.SettlementType.None, address(0), 0);\n } else if (settlementSharesDue > 0) {\n // Settle by minting shares outstanding for custody\n return (\n IFeeManager.SettlementType.MintSharesOutstanding,\n address(0),\n uint256(settlementSharesDue)\n );\n } else {\n // Settle by burning from shares outstanding\n return (\n IFeeManager.SettlementType.BurnSharesOutstanding,\n address(0),\n uint256(-settlementSharesDue)\n );\n }\n }\n\n /// @notice Updates the fee state after all fees have finished settle()\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _vaultProxy The VaultProxy of the fund\n /// @param _hook The FeeHook being executed\n /// @param _settlementData Encoded args to use in calculating the settlement\n /// @param _gav The GAV of the fund\n function update(\n address _comptrollerProxy,\n address _vaultProxy,\n IFeeManager.FeeHook _hook,\n bytes calldata _settlementData,\n uint256 _gav\n ) external override onlyFeeManager {\n uint256 prevSharePrice = comptrollerProxyToFeeInfo[_comptrollerProxy].lastSharePrice;\n uint256 nextSharePrice = __calcNextSharePrice(\n _comptrollerProxy,\n _vaultProxy,\n _hook,\n _settlementData,\n _gav\n );\n\n if (nextSharePrice == prevSharePrice) {\n return;\n }\n\n comptrollerProxyToFeeInfo[_comptrollerProxy].lastSharePrice = nextSharePrice;\n\n emit LastSharePriceUpdated(_comptrollerProxy, prevSharePrice, nextSharePrice);\n }\n\n // PUBLIC FUNCTIONS\n\n /// @notice Checks whether the shares outstanding can be paid out\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @return payoutAllowed_ True if the fee payment is due\n /// @dev Payout is allowed if fees have not yet been settled in a crystallization period,\n /// and at least 1 crystallization period has passed since activation\n function payoutAllowed(address _comptrollerProxy) public view returns (bool payoutAllowed_) {\n FeeInfo memory feeInfo = comptrollerProxyToFeeInfo[_comptrollerProxy];\n uint256 period = feeInfo.period;\n\n uint256 timeSinceActivated = block.timestamp.sub(feeInfo.activated);\n\n // Check if at least 1 crystallization period has passed since activation\n if (timeSinceActivated < period) {\n return false;\n }\n\n // Check that a full crystallization period has passed since the last payout\n uint256 timeSincePeriodStart = timeSinceActivated % period;\n uint256 periodStart = block.timestamp.sub(timeSincePeriodStart);\n return feeInfo.lastPaid < periodStart;\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Helper to calculate the aggregated value accumulated to a fund since the last\n /// settlement (happening at investment/redemption)\n /// Validated:\n /// _netSharesSupply > 0\n /// _sharePriceWithoutPerformance != _prevSharePrice\n function __calcAggregateValueDue(\n uint256 _netSharesSupply,\n uint256 _sharePriceWithoutPerformance,\n uint256 _prevSharePrice,\n uint256 _prevAggregateValueDue,\n uint256 _feeRate,\n uint256 _highWaterMark\n ) private pure returns (uint256) {\n int256 superHWMValueSinceLastSettled = (\n int256(__calcUint256Max(_highWaterMark, _sharePriceWithoutPerformance)).sub(\n int256(__calcUint256Max(_highWaterMark, _prevSharePrice))\n )\n )\n .mul(int256(_netSharesSupply))\n .div(int256(SHARE_UNIT));\n\n int256 valueDueSinceLastSettled = superHWMValueSinceLastSettled.mul(int256(_feeRate)).div(\n int256(RATE_DIVISOR)\n );\n\n return\n uint256(\n __calcInt256Max(0, int256(_prevAggregateValueDue).add(valueDueSinceLastSettled))\n );\n }\n\n /// @dev Helper to calculate the max of two int values\n function __calcInt256Max(int256 _a, int256 _b) private pure returns (int256) {\n if (_a >= _b) {\n return _a;\n }\n\n return _b;\n }\n\n /// @dev Helper to calculate the next `lastSharePrice` value\n function __calcNextSharePrice(\n address _comptrollerProxy,\n address _vaultProxy,\n IFeeManager.FeeHook _hook,\n bytes memory _settlementData,\n uint256 _gav\n ) private view returns (uint256 nextSharePrice_) {\n uint256 denominationAssetUnit = 10 **\n uint256(ERC20(ComptrollerLib(_comptrollerProxy).getDenominationAsset()).decimals());\n if (_gav == 0) {\n return denominationAssetUnit;\n }\n\n // Get shares outstanding via VaultProxy balance and calc shares supply to get net shares supply\n ERC20 vaultProxyContract = ERC20(_vaultProxy);\n uint256 totalSharesSupply = vaultProxyContract.totalSupply();\n uint256 nextNetSharesSupply = totalSharesSupply.sub(\n vaultProxyContract.balanceOf(_vaultProxy)\n );\n if (nextNetSharesSupply == 0) {\n return denominationAssetUnit;\n }\n\n uint256 nextGav = _gav;\n\n // For both Continuous and BuySharesCompleted hooks, _gav and shares supply will not change,\n // we only need additional calculations for PreRedeemShares\n if (_hook == IFeeManager.FeeHook.PreRedeemShares) {\n (, uint256 sharesDecrease) = __decodePreRedeemSharesSettlementData(_settlementData);\n\n // Shares have not yet been burned\n nextNetSharesSupply = nextNetSharesSupply.sub(sharesDecrease);\n if (nextNetSharesSupply == 0) {\n return denominationAssetUnit;\n }\n\n // Assets have not yet been withdrawn\n uint256 gavDecrease = sharesDecrease\n .mul(_gav)\n .mul(SHARE_UNIT)\n .div(totalSharesSupply)\n .div(denominationAssetUnit);\n\n nextGav = nextGav.sub(gavDecrease);\n if (nextGav == 0) {\n return denominationAssetUnit;\n }\n }\n\n return nextGav.mul(SHARE_UNIT).div(nextNetSharesSupply);\n }\n\n /// @dev Helper to calculate the performance metrics for a fund.\n /// Validated:\n /// _totalSharesSupply > 0\n /// _gav > 0\n /// _totalSharesSupply != _totalSharesOutstanding\n function __calcPerformance(\n address _comptrollerProxy,\n uint256 _totalSharesSupply,\n uint256 _totalSharesOutstanding,\n uint256 _prevAggregateValueDue,\n FeeInfo memory feeInfo,\n uint256 _gav\n ) private view returns (uint256 nextAggregateValueDue_, int256 sharesDue_) {\n // Use the 'shares supply net shares outstanding' for performance calcs.\n // Cannot be 0, as _totalSharesSupply != _totalSharesOutstanding\n uint256 netSharesSupply = _totalSharesSupply.sub(_totalSharesOutstanding);\n uint256 sharePriceWithoutPerformance = _gav.mul(SHARE_UNIT).div(netSharesSupply);\n\n // If gross share price has not changed, can exit early\n uint256 prevSharePrice = feeInfo.lastSharePrice;\n if (sharePriceWithoutPerformance == prevSharePrice) {\n return (_prevAggregateValueDue, 0);\n }\n\n nextAggregateValueDue_ = __calcAggregateValueDue(\n netSharesSupply,\n sharePriceWithoutPerformance,\n prevSharePrice,\n _prevAggregateValueDue,\n feeInfo.rate,\n feeInfo.highWaterMark\n );\n\n sharesDue_ = __calcSharesDue(\n _comptrollerProxy,\n netSharesSupply,\n _gav,\n nextAggregateValueDue_\n );\n\n return (nextAggregateValueDue_, sharesDue_);\n }\n\n /// @dev Helper to calculate sharesDue during settlement.\n /// Validated:\n /// _netSharesSupply > 0\n /// _gav > 0\n function __calcSharesDue(\n address _comptrollerProxy,\n uint256 _netSharesSupply,\n uint256 _gav,\n uint256 _nextAggregateValueDue\n ) private view returns (int256 sharesDue_) {\n // If _nextAggregateValueDue > _gav, then no shares can be created.\n // This is a known limitation of the model, which is only reached for unrealistically\n // high performance fee rates (> 100%). A revert is allowed in such a case.\n uint256 sharesDueForAggregateValueDue = _nextAggregateValueDue.mul(_netSharesSupply).div(\n _gav.sub(_nextAggregateValueDue)\n );\n\n // Shares due is the +/- diff or the total shares outstanding already minted\n return\n int256(sharesDueForAggregateValueDue).sub(\n int256(\n FeeManager(FEE_MANAGER).getFeeSharesOutstandingForFund(\n _comptrollerProxy,\n address(this)\n )\n )\n );\n }\n\n /// @dev Helper to calculate the max of two uint values\n function __calcUint256Max(uint256 _a, uint256 _b) private pure returns (uint256) {\n if (_a >= _b) {\n return _a;\n }\n\n return _b;\n }\n\n /// @dev Helper to settle the fee and update performance state.\n /// Validated:\n /// _gav > 0\n function __settleAndUpdatePerformance(\n address _comptrollerProxy,\n address _vaultProxy,\n uint256 _gav\n ) private returns (int256 sharesDue_) {\n ERC20 sharesTokenContract = ERC20(_vaultProxy);\n\n uint256 totalSharesSupply = sharesTokenContract.totalSupply();\n if (totalSharesSupply == 0) {\n return 0;\n }\n\n uint256 totalSharesOutstanding = sharesTokenContract.balanceOf(_vaultProxy);\n if (totalSharesOutstanding == totalSharesSupply) {\n return 0;\n }\n\n FeeInfo storage feeInfo = comptrollerProxyToFeeInfo[_comptrollerProxy];\n uint256 prevAggregateValueDue = feeInfo.aggregateValueDue;\n\n uint256 nextAggregateValueDue;\n (nextAggregateValueDue, sharesDue_) = __calcPerformance(\n _comptrollerProxy,\n totalSharesSupply,\n totalSharesOutstanding,\n prevAggregateValueDue,\n feeInfo,\n _gav\n );\n if (nextAggregateValueDue == prevAggregateValueDue) {\n return 0;\n }\n\n // Update fee state\n feeInfo.aggregateValueDue = nextAggregateValueDue;\n\n emit PerformanceUpdated(\n _comptrollerProxy,\n prevAggregateValueDue,\n nextAggregateValueDue,\n sharesDue_\n );\n\n return sharesDue_;\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the feeInfo for a given fund\n /// @param _comptrollerProxy The ComptrollerProxy contract of the fund\n /// @return feeInfo_ The feeInfo\n function getFeeInfoForFund(address _comptrollerProxy)\n external\n view\n returns (FeeInfo memory feeInfo_)\n {\n return comptrollerProxyToFeeInfo[_comptrollerProxy];\n }\n}\n" }, "@openzeppelin/contracts/math/SignedSafeMath.sol": { "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\n/**\n * @title SignedSafeMath\n * @dev Signed math operations with safety checks that revert on error.\n */\nlibrary SignedSafeMath {\n int256 constant private _INT256_MIN = -2**255;\n\n /**\n * @dev Returns the multiplication of two signed integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `*` operator.\n *\n * Requirements:\n *\n * - Multiplication cannot overflow.\n */\n function mul(int256 a, int256 b) internal pure returns (int256) {\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n // benefit is lost if 'b' is also tested.\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n if (a == 0) {\n return 0;\n }\n\n require(!(a == -1 && b == _INT256_MIN), \"SignedSafeMath: multiplication overflow\");\n\n int256 c = a * b;\n require(c / a == b, \"SignedSafeMath: multiplication overflow\");\n\n return c;\n }\n\n /**\n * @dev Returns the integer division of two signed integers. Reverts on\n * division by zero. The result is rounded towards zero.\n *\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n * uses an invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function div(int256 a, int256 b) internal pure returns (int256) {\n require(b != 0, \"SignedSafeMath: division by zero\");\n require(!(b == -1 && a == _INT256_MIN), \"SignedSafeMath: division overflow\");\n\n int256 c = a / b;\n\n return c;\n }\n\n /**\n * @dev Returns the subtraction of two signed integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `-` operator.\n *\n * Requirements:\n *\n * - Subtraction cannot overflow.\n */\n function sub(int256 a, int256 b) internal pure returns (int256) {\n int256 c = a - b;\n require((b >= 0 && c <= a) || (b < 0 && c > a), \"SignedSafeMath: subtraction overflow\");\n\n return c;\n }\n\n /**\n * @dev Returns the addition of two signed integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `+` operator.\n *\n * Requirements:\n *\n * - Addition cannot overflow.\n */\n function add(int256 a, int256 b) internal pure returns (int256) {\n int256 c = a + b;\n require((b >= 0 && c >= a) || (b < 0 && c < a), \"SignedSafeMath: addition overflow\");\n\n return c;\n }\n}\n" }, "contracts/release/extensions/fee-manager/FeeManager.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/utils/EnumerableSet.sol\";\nimport \"../../core/fund/comptroller/IComptroller.sol\";\nimport \"../../core/fund/vault/IVault.sol\";\nimport \"../../utils/AddressArrayLib.sol\";\nimport \"../utils/ExtensionBase.sol\";\nimport \"../utils/FundDeployerOwnerMixin.sol\";\nimport \"../utils/PermissionedVaultActionMixin.sol\";\nimport \"./IFee.sol\";\nimport \"./IFeeManager.sol\";\n\n/// @title FeeManager Contract\n/// @author Enzyme Council \n/// @notice Manages fees for funds\ncontract FeeManager is\n IFeeManager,\n ExtensionBase,\n FundDeployerOwnerMixin,\n PermissionedVaultActionMixin\n{\n using AddressArrayLib for address[];\n using EnumerableSet for EnumerableSet.AddressSet;\n using SafeMath for uint256;\n\n event AllSharesOutstandingForcePaidForFund(\n address indexed comptrollerProxy,\n address payee,\n uint256 sharesDue\n );\n\n event FeeDeregistered(address indexed fee, string indexed identifier);\n\n event FeeEnabledForFund(\n address indexed comptrollerProxy,\n address indexed fee,\n bytes settingsData\n );\n\n event FeeRegistered(\n address indexed fee,\n string indexed identifier,\n FeeHook[] implementedHooksForSettle,\n FeeHook[] implementedHooksForUpdate,\n bool usesGavOnSettle,\n bool usesGavOnUpdate\n );\n\n event FeeSettledForFund(\n address indexed comptrollerProxy,\n address indexed fee,\n SettlementType indexed settlementType,\n address payer,\n address payee,\n uint256 sharesDue\n );\n\n event SharesOutstandingPaidForFund(\n address indexed comptrollerProxy,\n address indexed fee,\n uint256 sharesDue\n );\n\n event FeesRecipientSetForFund(\n address indexed comptrollerProxy,\n address prevFeesRecipient,\n address nextFeesRecipient\n );\n\n EnumerableSet.AddressSet private registeredFees;\n mapping(address => bool) private feeToUsesGavOnSettle;\n mapping(address => bool) private feeToUsesGavOnUpdate;\n mapping(address => mapping(FeeHook => bool)) private feeToHookToImplementsSettle;\n mapping(address => mapping(FeeHook => bool)) private feeToHookToImplementsUpdate;\n\n mapping(address => address[]) private comptrollerProxyToFees;\n mapping(address => mapping(address => uint256))\n private comptrollerProxyToFeeToSharesOutstanding;\n\n constructor(address _fundDeployer) public FundDeployerOwnerMixin(_fundDeployer) {}\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Activate already-configured fees for use in the calling fund\n function activateForFund(bool) external override {\n address vaultProxy = __setValidatedVaultProxy(msg.sender);\n\n address[] memory enabledFees = comptrollerProxyToFees[msg.sender];\n for (uint256 i; i < enabledFees.length; i++) {\n IFee(enabledFees[i]).activateForFund(msg.sender, vaultProxy);\n }\n }\n\n /// @notice Deactivate fees for a fund\n /// @dev msg.sender is validated during __invokeHook()\n function deactivateForFund() external override {\n // Settle continuous fees one last time, but without calling Fee.update()\n __invokeHook(msg.sender, IFeeManager.FeeHook.Continuous, \"\", 0, false);\n\n // Force payout of remaining shares outstanding\n __forcePayoutAllSharesOutstanding(msg.sender);\n\n // Clean up storage\n __deleteFundStorage(msg.sender);\n }\n\n /// @notice Receives a dispatched `callOnExtension` from a fund's ComptrollerProxy\n /// @param _actionId An ID representing the desired action\n /// @param _callArgs Encoded arguments specific to the _actionId\n /// @dev This is the only way to call a function on this contract that updates VaultProxy state.\n /// For both of these actions, any caller is allowed, so we don't use the caller param.\n function receiveCallFromComptroller(\n address,\n uint256 _actionId,\n bytes calldata _callArgs\n ) external override {\n if (_actionId == 0) {\n // Settle and update all continuous fees\n __invokeHook(msg.sender, IFeeManager.FeeHook.Continuous, \"\", 0, true);\n } else if (_actionId == 1) {\n __payoutSharesOutstandingForFees(msg.sender, _callArgs);\n } else {\n revert(\"receiveCallFromComptroller: Invalid _actionId\");\n }\n }\n\n /// @notice Enable and configure fees for use in the calling fund\n /// @param _configData Encoded config data\n /// @dev Caller is expected to be a valid ComptrollerProxy, but there isn't a need to validate.\n /// The order of `fees` determines the order in which fees of the same FeeHook will be applied.\n /// It is recommended to run ManagementFee before PerformanceFee in order to achieve precise\n /// PerformanceFee calcs.\n function setConfigForFund(bytes calldata _configData) external override {\n (address[] memory fees, bytes[] memory settingsData) = abi.decode(\n _configData,\n (address[], bytes[])\n );\n\n // Sanity checks\n require(\n fees.length == settingsData.length,\n \"setConfigForFund: fees and settingsData array lengths unequal\"\n );\n require(fees.isUniqueSet(), \"setConfigForFund: fees cannot include duplicates\");\n\n // Enable each fee with settings\n for (uint256 i; i < fees.length; i++) {\n require(isRegisteredFee(fees[i]), \"setConfigForFund: Fee is not registered\");\n\n // Set fund config on fee\n IFee(fees[i]).addFundSettings(msg.sender, settingsData[i]);\n\n // Enable fee for fund\n comptrollerProxyToFees[msg.sender].push(fees[i]);\n\n emit FeeEnabledForFund(msg.sender, fees[i], settingsData[i]);\n }\n }\n\n /// @notice Allows all fees for a particular FeeHook to implement settle() and update() logic\n /// @param _hook The FeeHook to invoke\n /// @param _settlementData The encoded settlement parameters specific to the FeeHook\n /// @param _gav The GAV for a fund if known in the invocating code, otherwise 0\n function invokeHook(\n FeeHook _hook,\n bytes calldata _settlementData,\n uint256 _gav\n ) external override {\n __invokeHook(msg.sender, _hook, _settlementData, _gav, true);\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Helper to destroy local storage to get gas refund,\n /// and to prevent further calls to fee manager\n function __deleteFundStorage(address _comptrollerProxy) private {\n delete comptrollerProxyToFees[_comptrollerProxy];\n delete comptrollerProxyToVaultProxy[_comptrollerProxy];\n }\n\n /// @dev Helper to force the payout of shares outstanding across all fees.\n /// For the current release, all shares in the VaultProxy are assumed to be\n /// shares outstanding from fees. If not, then they were sent there by mistake\n /// and are otherwise unrecoverable. We can therefore take the VaultProxy's\n /// shares balance as the totalSharesOutstanding to payout to the fund owner.\n function __forcePayoutAllSharesOutstanding(address _comptrollerProxy) private {\n address vaultProxy = getVaultProxyForFund(_comptrollerProxy);\n\n uint256 totalSharesOutstanding = ERC20(vaultProxy).balanceOf(vaultProxy);\n if (totalSharesOutstanding == 0) {\n return;\n }\n\n // Destroy any shares outstanding storage\n address[] memory fees = comptrollerProxyToFees[_comptrollerProxy];\n for (uint256 i; i < fees.length; i++) {\n delete comptrollerProxyToFeeToSharesOutstanding[_comptrollerProxy][fees[i]];\n }\n\n // Distribute all shares outstanding to the fees recipient\n address payee = IVault(vaultProxy).getOwner();\n __transferShares(_comptrollerProxy, vaultProxy, payee, totalSharesOutstanding);\n\n emit AllSharesOutstandingForcePaidForFund(\n _comptrollerProxy,\n payee,\n totalSharesOutstanding\n );\n }\n\n /// @dev Helper to get the canonical value of GAV if not yet set and required by fee\n function __getGavAsNecessary(\n address _comptrollerProxy,\n address _fee,\n uint256 _gavOrZero\n ) private returns (uint256 gav_) {\n if (_gavOrZero == 0 && feeUsesGavOnUpdate(_fee)) {\n // Assumes that any fee that requires GAV would need to revert if invalid or not final\n bool gavIsValid;\n (gav_, gavIsValid) = IComptroller(_comptrollerProxy).calcGav(true);\n require(gavIsValid, \"__getGavAsNecessary: Invalid GAV\");\n } else {\n gav_ = _gavOrZero;\n }\n\n return gav_;\n }\n\n /// @dev Helper to run settle() on all enabled fees for a fund that implement a given hook, and then to\n /// optionally run update() on the same fees. This order allows fees an opportunity to update\n /// their local state after all VaultProxy state transitions (i.e., minting, burning,\n /// transferring shares) have finished. To optimize for the expensive operation of calculating\n /// GAV, once one fee requires GAV, we recycle that `gav` value for subsequent fees.\n /// Assumes that _gav is either 0 or has already been validated.\n function __invokeHook(\n address _comptrollerProxy,\n FeeHook _hook,\n bytes memory _settlementData,\n uint256 _gavOrZero,\n bool _updateFees\n ) private {\n address[] memory fees = comptrollerProxyToFees[_comptrollerProxy];\n if (fees.length == 0) {\n return;\n }\n\n address vaultProxy = getVaultProxyForFund(_comptrollerProxy);\n\n // This check isn't strictly necessary, but its cost is insignificant,\n // and helps to preserve data integrity.\n require(vaultProxy != address(0), \"__invokeHook: Fund is not active\");\n\n // First, allow all fees to implement settle()\n uint256 gav = __settleFees(\n _comptrollerProxy,\n vaultProxy,\n fees,\n _hook,\n _settlementData,\n _gavOrZero\n );\n\n // Second, allow fees to implement update()\n // This function does not allow any further altering of VaultProxy state\n // (i.e., burning, minting, or transferring shares)\n if (_updateFees) {\n __updateFees(_comptrollerProxy, vaultProxy, fees, _hook, _settlementData, gav);\n }\n }\n\n /// @dev Helper to payout the shares outstanding for the specified fees.\n /// Does not call settle() on fees.\n /// Only callable via ComptrollerProxy.callOnExtension().\n function __payoutSharesOutstandingForFees(address _comptrollerProxy, bytes memory _callArgs)\n private\n {\n address[] memory fees = abi.decode(_callArgs, (address[]));\n address vaultProxy = getVaultProxyForFund(msg.sender);\n\n uint256 sharesOutstandingDue;\n for (uint256 i; i < fees.length; i++) {\n if (!IFee(fees[i]).payout(_comptrollerProxy, vaultProxy)) {\n continue;\n }\n\n\n uint256 sharesOutstandingForFee\n = comptrollerProxyToFeeToSharesOutstanding[_comptrollerProxy][fees[i]];\n if (sharesOutstandingForFee == 0) {\n continue;\n }\n\n sharesOutstandingDue = sharesOutstandingDue.add(sharesOutstandingForFee);\n\n // Delete shares outstanding and distribute from VaultProxy to the fees recipient\n comptrollerProxyToFeeToSharesOutstanding[_comptrollerProxy][fees[i]] = 0;\n\n emit SharesOutstandingPaidForFund(_comptrollerProxy, fees[i], sharesOutstandingForFee);\n }\n\n if (sharesOutstandingDue > 0) {\n __transferShares(\n _comptrollerProxy,\n vaultProxy,\n IVault(vaultProxy).getOwner(),\n sharesOutstandingDue\n );\n }\n }\n\n /// @dev Helper to settle a fee\n function __settleFee(\n address _comptrollerProxy,\n address _vaultProxy,\n address _fee,\n FeeHook _hook,\n bytes memory _settlementData,\n uint256 _gav\n ) private {\n (SettlementType settlementType, address payer, uint256 sharesDue) = IFee(_fee).settle(\n _comptrollerProxy,\n _vaultProxy,\n _hook,\n _settlementData,\n _gav\n );\n if (settlementType == SettlementType.None) {\n return;\n }\n\n address payee;\n if (settlementType == SettlementType.Direct) {\n payee = IVault(_vaultProxy).getOwner();\n __transferShares(_comptrollerProxy, payer, payee, sharesDue);\n } else if (settlementType == SettlementType.Mint) {\n payee = IVault(_vaultProxy).getOwner();\n __mintShares(_comptrollerProxy, payee, sharesDue);\n } else if (settlementType == SettlementType.Burn) {\n __burnShares(_comptrollerProxy, payer, sharesDue);\n } else if (settlementType == SettlementType.MintSharesOutstanding) {\n comptrollerProxyToFeeToSharesOutstanding[_comptrollerProxy][_fee] = comptrollerProxyToFeeToSharesOutstanding[_comptrollerProxy][_fee]\n .add(sharesDue);\n\n payee = _vaultProxy;\n __mintShares(_comptrollerProxy, payee, sharesDue);\n } else if (settlementType == SettlementType.BurnSharesOutstanding) {\n comptrollerProxyToFeeToSharesOutstanding[_comptrollerProxy][_fee] = comptrollerProxyToFeeToSharesOutstanding[_comptrollerProxy][_fee]\n .sub(sharesDue);\n\n payer = _vaultProxy;\n __burnShares(_comptrollerProxy, payer, sharesDue);\n } else {\n revert(\"__settleFee: Invalid SettlementType\");\n }\n\n emit FeeSettledForFund(_comptrollerProxy, _fee, settlementType, payer, payee, sharesDue);\n }\n\n /// @dev Helper to settle fees that implement a given fee hook\n function __settleFees(\n address _comptrollerProxy,\n address _vaultProxy,\n address[] memory _fees,\n FeeHook _hook,\n bytes memory _settlementData,\n uint256 _gavOrZero\n ) private returns (uint256 gav_) {\n gav_ = _gavOrZero;\n\n for (uint256 i; i < _fees.length; i++) {\n if (!feeSettlesOnHook(_fees[i], _hook)) {\n continue;\n }\n\n gav_ = __getGavAsNecessary(_comptrollerProxy, _fees[i], gav_);\n\n __settleFee(_comptrollerProxy, _vaultProxy, _fees[i], _hook, _settlementData, gav_);\n }\n\n return gav_;\n }\n\n /// @dev Helper to update fees that implement a given fee hook\n function __updateFees(\n address _comptrollerProxy,\n address _vaultProxy,\n address[] memory _fees,\n FeeHook _hook,\n bytes memory _settlementData,\n uint256 _gavOrZero\n ) private {\n uint256 gav = _gavOrZero;\n\n for (uint256 i; i < _fees.length; i++) {\n if (!feeUpdatesOnHook(_fees[i], _hook)) {\n continue;\n }\n\n gav = __getGavAsNecessary(_comptrollerProxy, _fees[i], gav);\n\n IFee(_fees[i]).update(_comptrollerProxy, _vaultProxy, _hook, _settlementData, gav);\n }\n }\n\n ///////////////////\n // FEES REGISTRY //\n ///////////////////\n\n /// @notice Remove fees from the list of registered fees\n /// @param _fees Addresses of fees to be deregistered\n function deregisterFees(address[] calldata _fees) external onlyFundDeployerOwner {\n require(_fees.length > 0, \"deregisterFees: _fees cannot be empty\");\n\n for (uint256 i; i < _fees.length; i++) {\n require(isRegisteredFee(_fees[i]), \"deregisterFees: fee is not registered\");\n\n registeredFees.remove(_fees[i]);\n\n emit FeeDeregistered(_fees[i], IFee(_fees[i]).identifier());\n }\n }\n\n /// @notice Add fees to the list of registered fees\n /// @param _fees Addresses of fees to be registered\n /// @dev Stores the hooks that a fee implements and whether each implementation uses GAV,\n /// which fronts the gas for calls to check if a hook is implemented, and guarantees\n /// that these hook implementation return values do not change post-registration.\n function registerFees(address[] calldata _fees) external onlyFundDeployerOwner {\n require(_fees.length > 0, \"registerFees: _fees cannot be empty\");\n\n for (uint256 i; i < _fees.length; i++) {\n require(!isRegisteredFee(_fees[i]), \"registerFees: fee already registered\");\n\n registeredFees.add(_fees[i]);\n\n IFee feeContract = IFee(_fees[i]);\n (\n FeeHook[] memory implementedHooksForSettle,\n FeeHook[] memory implementedHooksForUpdate,\n bool usesGavOnSettle,\n bool usesGavOnUpdate\n ) = feeContract.implementedHooks();\n\n // Stores the hooks for which each fee implements settle() and update()\n for (uint256 j; j < implementedHooksForSettle.length; j++) {\n feeToHookToImplementsSettle[_fees[i]][implementedHooksForSettle[j]] = true;\n }\n for (uint256 j; j < implementedHooksForUpdate.length; j++) {\n feeToHookToImplementsUpdate[_fees[i]][implementedHooksForUpdate[j]] = true;\n }\n\n // Stores whether each fee requires GAV during its implementations for settle() and update()\n if (usesGavOnSettle) {\n feeToUsesGavOnSettle[_fees[i]] = true;\n }\n if (usesGavOnUpdate) {\n feeToUsesGavOnUpdate[_fees[i]] = true;\n }\n\n emit FeeRegistered(\n _fees[i],\n feeContract.identifier(),\n implementedHooksForSettle,\n implementedHooksForUpdate,\n usesGavOnSettle,\n usesGavOnUpdate\n );\n }\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Get a list of enabled fees for a given fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @return enabledFees_ An array of enabled fee addresses\n function getEnabledFeesForFund(address _comptrollerProxy)\n external\n view\n returns (address[] memory enabledFees_)\n {\n return comptrollerProxyToFees[_comptrollerProxy];\n }\n\n /// @notice Get the amount of shares outstanding for a particular fee for a fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _fee The fee address\n /// @return sharesOutstanding_ The amount of shares outstanding\n function getFeeSharesOutstandingForFund(address _comptrollerProxy, address _fee)\n external\n view\n returns (uint256 sharesOutstanding_)\n {\n return comptrollerProxyToFeeToSharesOutstanding[_comptrollerProxy][_fee];\n }\n\n /// @notice Get all registered fees\n /// @return registeredFees_ A list of all registered fee addresses\n function getRegisteredFees() external view returns (address[] memory registeredFees_) {\n registeredFees_ = new address[](registeredFees.length());\n for (uint256 i; i < registeredFees_.length; i++) {\n registeredFees_[i] = registeredFees.at(i);\n }\n\n return registeredFees_;\n }\n\n /// @notice Checks if a fee implements settle() on a particular hook\n /// @param _fee The address of the fee to check\n /// @param _hook The FeeHook to check\n /// @return settlesOnHook_ True if the fee settles on the given hook\n function feeSettlesOnHook(address _fee, FeeHook _hook)\n public\n view\n returns (bool settlesOnHook_)\n {\n return feeToHookToImplementsSettle[_fee][_hook];\n }\n\n /// @notice Checks if a fee implements update() on a particular hook\n /// @param _fee The address of the fee to check\n /// @param _hook The FeeHook to check\n /// @return updatesOnHook_ True if the fee updates on the given hook\n function feeUpdatesOnHook(address _fee, FeeHook _hook)\n public\n view\n returns (bool updatesOnHook_)\n {\n return feeToHookToImplementsUpdate[_fee][_hook];\n }\n\n /// @notice Checks if a fee uses GAV in its settle() implementation\n /// @param _fee The address of the fee to check\n /// @return usesGav_ True if the fee uses GAV during settle() implementation\n function feeUsesGavOnSettle(address _fee) public view returns (bool usesGav_) {\n return feeToUsesGavOnSettle[_fee];\n }\n\n /// @notice Checks if a fee uses GAV in its update() implementation\n /// @param _fee The address of the fee to check\n /// @return usesGav_ True if the fee uses GAV during update() implementation\n function feeUsesGavOnUpdate(address _fee) public view returns (bool usesGav_) {\n return feeToUsesGavOnUpdate[_fee];\n }\n\n /// @notice Check whether a fee is registered\n /// @param _fee The address of the fee to check\n /// @return isRegisteredFee_ True if the fee is registered\n function isRegisteredFee(address _fee) public view returns (bool isRegisteredFee_) {\n return registeredFees.contains(_fee);\n }\n}\n" }, "contracts/release/extensions/utils/PermissionedVaultActionMixin.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../core/fund/comptroller/IComptroller.sol\";\n\n/// @title PermissionedVaultActionMixin Contract\n/// @author Enzyme Council \n/// @notice A mixin contract for extensions that can make permissioned vault calls\nabstract contract PermissionedVaultActionMixin {\n /// @notice Adds a tracked asset to the fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _asset The asset to add\n function __addTrackedAsset(address _comptrollerProxy, address _asset) internal {\n IComptroller(_comptrollerProxy).permissionedVaultAction(\n IComptroller.VaultAction.AddTrackedAsset,\n abi.encode(_asset)\n );\n }\n\n /// @notice Grants an allowance to a spender to use a fund's asset\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _asset The asset for which to grant an allowance\n /// @param _target The spender of the allowance\n /// @param _amount The amount of the allowance\n function __approveAssetSpender(\n address _comptrollerProxy,\n address _asset,\n address _target,\n uint256 _amount\n ) internal {\n IComptroller(_comptrollerProxy).permissionedVaultAction(\n IComptroller.VaultAction.ApproveAssetSpender,\n abi.encode(_asset, _target, _amount)\n );\n }\n\n /// @notice Burns fund shares for a particular account\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _target The account for which to burn shares\n /// @param _amount The amount of shares to burn\n function __burnShares(\n address _comptrollerProxy,\n address _target,\n uint256 _amount\n ) internal {\n IComptroller(_comptrollerProxy).permissionedVaultAction(\n IComptroller.VaultAction.BurnShares,\n abi.encode(_target, _amount)\n );\n }\n\n /// @notice Mints fund shares to a particular account\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _target The account to which to mint shares\n /// @param _amount The amount of shares to mint\n function __mintShares(\n address _comptrollerProxy,\n address _target,\n uint256 _amount\n ) internal {\n IComptroller(_comptrollerProxy).permissionedVaultAction(\n IComptroller.VaultAction.MintShares,\n abi.encode(_target, _amount)\n );\n }\n\n /// @notice Removes a tracked asset from the fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _asset The asset to remove\n function __removeTrackedAsset(address _comptrollerProxy, address _asset) internal {\n IComptroller(_comptrollerProxy).permissionedVaultAction(\n IComptroller.VaultAction.RemoveTrackedAsset,\n abi.encode(_asset)\n );\n }\n\n /// @notice Transfers fund shares from one account to another\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _from The account from which to transfer shares\n /// @param _to The account to which to transfer shares\n /// @param _amount The amount of shares to transfer\n function __transferShares(\n address _comptrollerProxy,\n address _from,\n address _to,\n uint256 _amount\n ) internal {\n IComptroller(_comptrollerProxy).permissionedVaultAction(\n IComptroller.VaultAction.TransferShares,\n abi.encode(_from, _to, _amount)\n );\n }\n\n /// @notice Withdraws an asset from the VaultProxy to a given account\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _asset The asset to withdraw\n /// @param _target The account to which to withdraw the asset\n /// @param _amount The amount of asset to withdraw\n function __withdrawAssetTo(\n address _comptrollerProxy,\n address _asset,\n address _target,\n uint256 _amount\n ) internal {\n IComptroller(_comptrollerProxy).permissionedVaultAction(\n IComptroller.VaultAction.WithdrawAssetTo,\n abi.encode(_asset, _target, _amount)\n );\n }\n}\n" }, "contracts/release/peripheral/FundActionsWrapper.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../core/fund/comptroller/ComptrollerLib.sol\";\nimport \"../extensions/fee-manager/FeeManager.sol\";\n\n/// @title FundActionsWrapper Contract\n/// @author Enzyme Council \n/// @notice Logic related to funds, not necessary in the core protocol\n/// @dev This contract is currently unaudited, as it does not involve any\n/// exchange in value, and simply wraps other functions for convenience\ncontract FundActionsWrapper {\n address private immutable FEE_MANAGER;\n\n constructor(address _feeManager) public {\n FEE_MANAGER = _feeManager;\n }\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Calculates the net value of 1 unit of shares in the fund's denomination asset\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @return netShareValue_ The amount of the denomination asset per share\n /// @return isValid_ True if the conversion rates to derive the value are all valid\n /// @dev Accounts for fees outstanding. This is a convenience function for external consumption\n /// that can be used to determine the cost of purchasing shares at any given point in time.\n /// It essentially just bundles settling all fees that implement the Continuous hook and then\n /// looking up the gross share value.\n function calcNetShareValueForFund(address _comptrollerProxy)\n external\n returns (uint256 netShareValue_, bool isValid_)\n {\n ComptrollerLib comptrollerProxyContract = ComptrollerLib(_comptrollerProxy);\n comptrollerProxyContract.callOnExtension(FEE_MANAGER, 0, \"\");\n\n return comptrollerProxyContract.calcGrossShareValue(false);\n }\n\n /// @notice Invokes the Continuous fee hook on all specified fees, and then attempts to payout\n /// any shares outstanding on those fees\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _fees The fees for which to run these actions\n /// @dev This is just a wrapper to execute two callOnExtension() actions atomically, in sequence.\n /// The caller must pass in the fees that they want to run this logic on.\n function invokeContinuousFeeHookAndPayoutSharesOutstandingForFund(\n address _comptrollerProxy,\n address[] calldata _fees\n ) external {\n ComptrollerLib comptrollerProxyContract = ComptrollerLib(_comptrollerProxy);\n\n comptrollerProxyContract.callOnExtension(FEE_MANAGER, 0, \"\");\n comptrollerProxyContract.callOnExtension(FEE_MANAGER, 1, abi.encode(_fees));\n }\n\n // PUBLIC FUNCTIONS\n\n /// @notice Gets all fees that implement the `Continuous` fee hook for a fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @return continuousFees_ The fees that implement the `Continuous` fee hook\n function getContinuousFeesForFund(address _comptrollerProxy)\n public\n view\n returns (address[] memory continuousFees_)\n {\n FeeManager feeManagerContract = FeeManager(FEE_MANAGER);\n\n address[] memory fees = feeManagerContract.getEnabledFeesForFund(_comptrollerProxy);\n\n // Count the continuous fees\n uint256 continuousFeesCount;\n bool[] memory implementsContinuousHook = new bool[](fees.length);\n for (uint256 i; i < fees.length; i++) {\n if (feeManagerContract.feeSettlesOnHook(fees[i], IFeeManager.FeeHook.Continuous)) {\n continuousFeesCount++;\n implementsContinuousHook[i] = true;\n }\n }\n\n // Return early if no continuous fees\n if (continuousFeesCount == 0) {\n return new address[](0);\n }\n\n // Create continuous fees array\n continuousFees_ = new address[](continuousFeesCount);\n uint256 continuousFeesIndex;\n for (uint256 i; i < fees.length; i++) {\n if (implementsContinuousHook[i]) {\n continuousFees_[continuousFeesIndex] = fees[i];\n continuousFeesIndex++;\n }\n }\n\n return continuousFees_;\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `FEE_MANAGER` variable\n /// @return feeManager_ The `FEE_MANAGER` variable value\n function getFeeManager() external view returns (address feeManager_) {\n return FEE_MANAGER;\n }\n}\n" }, "contracts/release/peripheral/shares-requestors/AuthUserExecutedSharesRequestorLib.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/SafeERC20.sol\";\nimport \"../../core/fund/comptroller/ComptrollerLib.sol\";\nimport \"../../core/fund/vault/VaultLib.sol\";\nimport \"./IAuthUserExecutedSharesRequestor.sol\";\n\n/// @title AuthUserExecutedSharesRequestorLib Contract\n/// @author Enzyme Council \n/// @notice Provides the logic for AuthUserExecutedSharesRequestorProxy instances,\n/// in which shares requests are manually executed by a permissioned user\n/// @dev This will not work with a `denominationAsset` that does not transfer\n/// the exact expected amount or has an elastic supply.\ncontract AuthUserExecutedSharesRequestorLib is IAuthUserExecutedSharesRequestor {\n using SafeERC20 for ERC20;\n using SafeMath for uint256;\n\n event RequestCanceled(\n address indexed requestOwner,\n uint256 investmentAmount,\n uint256 minSharesQuantity\n );\n\n event RequestCreated(\n address indexed requestOwner,\n uint256 investmentAmount,\n uint256 minSharesQuantity\n );\n\n event RequestExecuted(\n address indexed caller,\n address indexed requestOwner,\n uint256 investmentAmount,\n uint256 minSharesQuantity\n );\n\n event RequestExecutorAdded(address indexed account);\n\n event RequestExecutorRemoved(address indexed account);\n\n struct RequestInfo {\n uint256 investmentAmount;\n uint256 minSharesQuantity;\n }\n\n uint256 private constant CANCELLATION_COOLDOWN_TIMELOCK = 10 minutes;\n\n address private comptrollerProxy;\n address private denominationAsset;\n address private fundOwner;\n\n mapping(address => RequestInfo) private ownerToRequestInfo;\n mapping(address => bool) private acctToIsRequestExecutor;\n mapping(address => uint256) private ownerToLastRequestCancellation;\n\n modifier onlyFundOwner() {\n require(msg.sender == fundOwner, \"Only fund owner callable\");\n _;\n }\n\n /// @notice Initializes a proxy instance that uses this library\n /// @dev Serves as a per-proxy pseudo-constructor\n function init(address _comptrollerProxy) external override {\n require(comptrollerProxy == address(0), \"init: Already initialized\");\n\n comptrollerProxy = _comptrollerProxy;\n\n // Cache frequently-used values that require external calls\n ComptrollerLib comptrollerProxyContract = ComptrollerLib(_comptrollerProxy);\n denominationAsset = comptrollerProxyContract.getDenominationAsset();\n fundOwner = VaultLib(comptrollerProxyContract.getVaultProxy()).getOwner();\n }\n\n /// @notice Cancels the shares request of the caller\n function cancelRequest() external {\n RequestInfo memory request = ownerToRequestInfo[msg.sender];\n require(request.investmentAmount > 0, \"cancelRequest: Request does not exist\");\n\n // Delete the request, start the cooldown period, and return the investment asset\n delete ownerToRequestInfo[msg.sender];\n ownerToLastRequestCancellation[msg.sender] = block.timestamp;\n ERC20(denominationAsset).safeTransfer(msg.sender, request.investmentAmount);\n\n emit RequestCanceled(msg.sender, request.investmentAmount, request.minSharesQuantity);\n }\n\n /// @notice Creates a shares request for the caller\n /// @param _investmentAmount The amount of the fund's denomination asset to use to buy shares\n /// @param _minSharesQuantity The minimum quantity of shares to buy with the _investmentAmount\n function createRequest(uint256 _investmentAmount, uint256 _minSharesQuantity) external {\n require(_investmentAmount > 0, \"createRequest: _investmentAmount must be > 0\");\n require(\n ownerToRequestInfo[msg.sender].investmentAmount == 0,\n \"createRequest: The request owner can only create one request before executed or canceled\"\n );\n require(\n ownerToLastRequestCancellation[msg.sender] <\n block.timestamp.sub(CANCELLATION_COOLDOWN_TIMELOCK),\n \"createRequest: Cannot create request during cancellation cooldown period\"\n );\n\n // Create the Request and take custody of investment asset\n ownerToRequestInfo[msg.sender] = RequestInfo({\n investmentAmount: _investmentAmount,\n minSharesQuantity: _minSharesQuantity\n });\n ERC20(denominationAsset).safeTransferFrom(msg.sender, address(this), _investmentAmount);\n\n emit RequestCreated(msg.sender, _investmentAmount, _minSharesQuantity);\n }\n\n /// @notice Executes multiple shares requests\n /// @param _requestOwners The owners of the pending shares requests\n function executeRequests(address[] calldata _requestOwners) external {\n require(\n msg.sender == fundOwner || isRequestExecutor(msg.sender),\n \"executeRequests: Invalid caller\"\n );\n require(_requestOwners.length > 0, \"executeRequests: _requestOwners can not be empty\");\n\n (\n address[] memory buyers,\n uint256[] memory investmentAmounts,\n uint256[] memory minSharesQuantities,\n uint256 totalInvestmentAmount\n ) = __convertRequestsToBuySharesParams(_requestOwners);\n\n // Since ComptrollerProxy instances are fully trusted,\n // we can approve them with the max amount of the denomination asset,\n // and only top the approval back to max if ever necessary.\n address comptrollerProxyCopy = comptrollerProxy;\n ERC20 denominationAssetContract = ERC20(denominationAsset);\n if (\n denominationAssetContract.allowance(address(this), comptrollerProxyCopy) <\n totalInvestmentAmount\n ) {\n denominationAssetContract.approve(comptrollerProxyCopy, type(uint256).max);\n }\n\n ComptrollerLib(comptrollerProxyCopy).buyShares(\n buyers,\n investmentAmounts,\n minSharesQuantities\n );\n }\n\n /// @dev Helper to convert raw shares requests into the format required by buyShares().\n /// It also removes any empty requests, which is necessary to prevent a DoS attack where a user\n /// cancels their request earlier in the same block (can be repeated from multiple accounts).\n /// This function also removes shares requests and fires success events as it loops through them.\n function __convertRequestsToBuySharesParams(address[] memory _requestOwners)\n private\n returns (\n address[] memory buyers_,\n uint256[] memory investmentAmounts_,\n uint256[] memory minSharesQuantities_,\n uint256 totalInvestmentAmount_\n )\n {\n uint256 existingRequestsCount = _requestOwners.length;\n uint256[] memory allInvestmentAmounts = new uint256[](_requestOwners.length);\n\n // Loop through once to get the count of existing requests\n for (uint256 i; i < _requestOwners.length; i++) {\n allInvestmentAmounts[i] = ownerToRequestInfo[_requestOwners[i]].investmentAmount;\n\n if (allInvestmentAmounts[i] == 0) {\n existingRequestsCount--;\n }\n }\n\n // Loop through a second time to format requests for buyShares(),\n // and to delete the requests and emit events early so no further looping is needed.\n buyers_ = new address[](existingRequestsCount);\n investmentAmounts_ = new uint256[](existingRequestsCount);\n minSharesQuantities_ = new uint256[](existingRequestsCount);\n uint256 existingRequestsIndex;\n for (uint256 i; i < _requestOwners.length; i++) {\n if (allInvestmentAmounts[i] == 0) {\n continue;\n }\n\n buyers_[existingRequestsIndex] = _requestOwners[i];\n investmentAmounts_[existingRequestsIndex] = allInvestmentAmounts[i];\n minSharesQuantities_[existingRequestsIndex] = ownerToRequestInfo[_requestOwners[i]]\n .minSharesQuantity;\n totalInvestmentAmount_ = totalInvestmentAmount_.add(allInvestmentAmounts[i]);\n\n delete ownerToRequestInfo[_requestOwners[i]];\n\n emit RequestExecuted(\n msg.sender,\n buyers_[existingRequestsIndex],\n investmentAmounts_[existingRequestsIndex],\n minSharesQuantities_[existingRequestsIndex]\n );\n\n existingRequestsIndex++;\n }\n\n return (buyers_, investmentAmounts_, minSharesQuantities_, totalInvestmentAmount_);\n }\n\n ///////////////////////////////\n // REQUEST EXECUTOR REGISTRY //\n ///////////////////////////////\n\n /// @notice Adds accounts to request executors\n /// @param _requestExecutors Accounts to add\n function addRequestExecutors(address[] calldata _requestExecutors) external onlyFundOwner {\n require(_requestExecutors.length > 0, \"addRequestExecutors: Empty _requestExecutors\");\n\n for (uint256 i; i < _requestExecutors.length; i++) {\n require(\n !isRequestExecutor(_requestExecutors[i]),\n \"addRequestExecutors: Value already set\"\n );\n require(\n _requestExecutors[i] != fundOwner,\n \"addRequestExecutors: The fund owner cannot be added\"\n );\n\n acctToIsRequestExecutor[_requestExecutors[i]] = true;\n\n emit RequestExecutorAdded(_requestExecutors[i]);\n }\n }\n\n /// @notice Removes accounts from request executors\n /// @param _requestExecutors Accounts to remove\n function removeRequestExecutors(address[] calldata _requestExecutors) external onlyFundOwner {\n require(_requestExecutors.length > 0, \"removeRequestExecutors: Empty _requestExecutors\");\n\n for (uint256 i; i < _requestExecutors.length; i++) {\n require(\n isRequestExecutor(_requestExecutors[i]),\n \"removeRequestExecutors: Account is not a request executor\"\n );\n\n acctToIsRequestExecutor[_requestExecutors[i]] = false;\n\n emit RequestExecutorRemoved(_requestExecutors[i]);\n }\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the value of `comptrollerProxy` variable\n /// @return comptrollerProxy_ The `comptrollerProxy` variable value\n function getComptrollerProxy() external view returns (address comptrollerProxy_) {\n return comptrollerProxy;\n }\n\n /// @notice Gets the value of `denominationAsset` variable\n /// @return denominationAsset_ The `denominationAsset` variable value\n function getDenominationAsset() external view returns (address denominationAsset_) {\n return denominationAsset;\n }\n\n /// @notice Gets the value of `fundOwner` variable\n /// @return fundOwner_ The `fundOwner` variable value\n function getFundOwner() external view returns (address fundOwner_) {\n return fundOwner;\n }\n\n /// @notice Gets the request info of a user\n /// @param _requestOwner The address of the user that creates the request\n /// @return requestInfo_ The request info created by the user\n function getSharesRequestInfoForOwner(address _requestOwner)\n external\n view\n returns (RequestInfo memory requestInfo_)\n {\n return ownerToRequestInfo[_requestOwner];\n }\n\n /// @notice Checks whether an account is a request executor\n /// @param _who The account to check\n /// @return isRequestExecutor_ True if _who is a request executor\n function isRequestExecutor(address _who) public view returns (bool isRequestExecutor_) {\n return acctToIsRequestExecutor[_who];\n }\n}\n" }, "contracts/release/peripheral/shares-requestors/IAuthUserExecutedSharesRequestor.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IAuthUserExecutedSharesRequestor Interface\n/// @author Enzyme Council \ninterface IAuthUserExecutedSharesRequestor {\n function init(address) external;\n}\n" }, "contracts/release/peripheral/shares-requestors/AuthUserExecutedSharesRequestorFactory.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../core/fund/comptroller/ComptrollerLib.sol\";\nimport \"../../core/fund/vault/VaultLib.sol\";\nimport \"./AuthUserExecutedSharesRequestorProxy.sol\";\nimport \"./IAuthUserExecutedSharesRequestor.sol\";\n\n/// @title AuthUserExecutedSharesRequestorFactory Contract\n/// @author Enzyme Council \n/// @notice Deploys and maintains a record of AuthUserExecutedSharesRequestorProxy instances\ncontract AuthUserExecutedSharesRequestorFactory {\n event SharesRequestorProxyDeployed(\n address indexed comptrollerProxy,\n address sharesRequestorProxy\n );\n\n address private immutable AUTH_USER_EXECUTED_SHARES_REQUESTOR_LIB;\n address private immutable DISPATCHER;\n\n mapping(address => address) private comptrollerProxyToSharesRequestorProxy;\n\n constructor(address _dispatcher, address _authUserExecutedSharesRequestorLib) public {\n AUTH_USER_EXECUTED_SHARES_REQUESTOR_LIB = _authUserExecutedSharesRequestorLib;\n DISPATCHER = _dispatcher;\n }\n\n /// @notice Deploys a shares requestor proxy instance for a given ComptrollerProxy instance\n /// @param _comptrollerProxy The ComptrollerProxy for which to deploy the shares requestor proxy\n /// @return sharesRequestorProxy_ The address of the newly-deployed shares requestor proxy\n function deploySharesRequestorProxy(address _comptrollerProxy)\n external\n returns (address sharesRequestorProxy_)\n {\n // Confirm fund is genuine\n VaultLib vaultProxyContract = VaultLib(ComptrollerLib(_comptrollerProxy).getVaultProxy());\n require(\n vaultProxyContract.getAccessor() == _comptrollerProxy,\n \"deploySharesRequestorProxy: Invalid VaultProxy for ComptrollerProxy\"\n );\n require(\n IDispatcher(DISPATCHER).getFundDeployerForVaultProxy(address(vaultProxyContract)) !=\n address(0),\n \"deploySharesRequestorProxy: Not a genuine fund\"\n );\n\n // Validate that the caller is the fund owner\n require(\n msg.sender == vaultProxyContract.getOwner(),\n \"deploySharesRequestorProxy: Only fund owner callable\"\n );\n\n // Validate that a proxy does not already exist\n require(\n comptrollerProxyToSharesRequestorProxy[_comptrollerProxy] == address(0),\n \"deploySharesRequestorProxy: Proxy already exists\"\n );\n\n // Deploy the proxy\n bytes memory constructData = abi.encodeWithSelector(\n IAuthUserExecutedSharesRequestor.init.selector,\n _comptrollerProxy\n );\n sharesRequestorProxy_ = address(\n new AuthUserExecutedSharesRequestorProxy(\n constructData,\n AUTH_USER_EXECUTED_SHARES_REQUESTOR_LIB\n )\n );\n\n comptrollerProxyToSharesRequestorProxy[_comptrollerProxy] = sharesRequestorProxy_;\n\n emit SharesRequestorProxyDeployed(_comptrollerProxy, sharesRequestorProxy_);\n\n return sharesRequestorProxy_;\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the value of the `AUTH_USER_EXECUTED_SHARES_REQUESTOR_LIB` variable\n /// @return authUserExecutedSharesRequestorLib_ The `AUTH_USER_EXECUTED_SHARES_REQUESTOR_LIB` variable value\n function getAuthUserExecutedSharesRequestorLib()\n external\n view\n returns (address authUserExecutedSharesRequestorLib_)\n {\n return AUTH_USER_EXECUTED_SHARES_REQUESTOR_LIB;\n }\n\n /// @notice Gets the value of the `DISPATCHER` variable\n /// @return dispatcher_ The `DISPATCHER` variable value\n function getDispatcher() external view returns (address dispatcher_) {\n return DISPATCHER;\n }\n\n /// @notice Gets the AuthUserExecutedSharesRequestorProxy associated with the given ComptrollerProxy\n /// @param _comptrollerProxy The ComptrollerProxy for which to get the associated AuthUserExecutedSharesRequestorProxy\n /// @return sharesRequestorProxy_ The associated AuthUserExecutedSharesRequestorProxy address\n function getSharesRequestorProxyForComptrollerProxy(address _comptrollerProxy)\n external\n view\n returns (address sharesRequestorProxy_)\n {\n return comptrollerProxyToSharesRequestorProxy[_comptrollerProxy];\n }\n}\n" }, "contracts/release/peripheral/shares-requestors/AuthUserExecutedSharesRequestorProxy.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../utils/Proxy.sol\";\n\ncontract AuthUserExecutedSharesRequestorProxy is Proxy {\n constructor(bytes memory _constructData, address _authUserExecutedSharesRequestorLib)\n public\n Proxy(_constructData, _authUserExecutedSharesRequestorLib)\n {}\n}\n" }, "contracts/release/utils/Proxy.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title Proxy Contract\n/// @author Enzyme Council \n/// @notice A proxy contract for all Proxy instances\n/// @dev The recommended implementation of a Proxy in EIP-1822, updated for solc 0.6.12,\n/// and using the EIP-1967 storage slot for the proxiable implementation.\n/// i.e., `bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)`, which is\n/// \"0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc\"\n/// See: https://eips.ethereum.org/EIPS/eip-1822\ncontract Proxy {\n constructor(bytes memory _constructData, address _contractLogic) public {\n assembly {\n sstore(\n 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc,\n _contractLogic\n )\n }\n (bool success, bytes memory returnData) = _contractLogic.delegatecall(_constructData);\n require(success, string(returnData));\n }\n\n fallback() external payable {\n assembly {\n let contractLogic := sload(\n 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc\n )\n calldatacopy(0x0, 0x0, calldatasize())\n let success := delegatecall(\n sub(gas(), 10000),\n contractLogic,\n 0x0,\n calldatasize(),\n 0,\n 0\n )\n let retSz := returndatasize()\n returndatacopy(0, 0, retSz)\n switch success\n case 0 {\n revert(0, retSz)\n }\n default {\n return(0, retSz)\n }\n }\n }\n}\n" }, "contracts/release/core/fund/comptroller/ComptrollerProxy.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../../utils/Proxy.sol\";\n\n/// @title ComptrollerProxy Contract\n/// @author Enzyme Council \n/// @notice A proxy contract for all ComptrollerProxy instances\ncontract ComptrollerProxy is Proxy {\n constructor(bytes memory _constructData, address _comptrollerLib)\n public\n Proxy(_constructData, _comptrollerLib)\n {}\n}\n" }, "contracts/release/core/fund-deployer/FundDeployer.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"../../../persistent/dispatcher/IDispatcher.sol\";\nimport \"../../../persistent/utils/IMigrationHookHandler.sol\";\nimport \"../fund/comptroller/IComptroller.sol\";\nimport \"../fund/comptroller/ComptrollerProxy.sol\";\nimport \"../fund/vault/IVault.sol\";\nimport \"./IFundDeployer.sol\";\n\n/// @title FundDeployer Contract\n/// @author Enzyme Council \n/// @notice The top-level contract of the release.\n/// It primarily coordinates fund deployment and fund migration, but\n/// it is also deferred to for contract access control and for allowed calls\n/// that can be made with a fund's VaultProxy as the msg.sender.\ncontract FundDeployer is IFundDeployer, IMigrationHookHandler {\n event ComptrollerLibSet(address comptrollerLib);\n\n event ComptrollerProxyDeployed(\n address indexed creator,\n address comptrollerProxy,\n address indexed denominationAsset,\n uint256 sharesActionTimelock,\n bytes feeManagerConfigData,\n bytes policyManagerConfigData,\n bool indexed forMigration\n );\n\n event NewFundCreated(\n address indexed creator,\n address comptrollerProxy,\n address vaultProxy,\n address indexed fundOwner,\n string fundName,\n address indexed denominationAsset,\n uint256 sharesActionTimelock,\n bytes feeManagerConfigData,\n bytes policyManagerConfigData\n );\n\n event ReleaseStatusSet(ReleaseStatus indexed prevStatus, ReleaseStatus indexed nextStatus);\n\n event VaultCallDeregistered(address indexed contractAddress, bytes4 selector);\n\n event VaultCallRegistered(address indexed contractAddress, bytes4 selector);\n\n // Constants\n address private immutable CREATOR;\n address private immutable DISPATCHER;\n address private immutable VAULT_LIB;\n\n // Pseudo-constants (can only be set once)\n address private comptrollerLib;\n\n // Storage\n ReleaseStatus private releaseStatus;\n mapping(address => mapping(bytes4 => bool)) private contractToSelectorToIsRegisteredVaultCall;\n mapping(address => address) private pendingComptrollerProxyToCreator;\n\n modifier onlyLiveRelease() {\n require(releaseStatus == ReleaseStatus.Live, \"Release is not Live\");\n _;\n }\n\n modifier onlyMigrator(address _vaultProxy) {\n require(\n IVault(_vaultProxy).canMigrate(msg.sender),\n \"Only a permissioned migrator can call this function\"\n );\n _;\n }\n\n modifier onlyOwner() {\n require(msg.sender == getOwner(), \"Only the contract owner can call this function\");\n _;\n }\n\n modifier onlyPendingComptrollerProxyCreator(address _comptrollerProxy) {\n require(\n msg.sender == pendingComptrollerProxyToCreator[_comptrollerProxy],\n \"Only the ComptrollerProxy creator can call this function\"\n );\n _;\n }\n\n constructor(\n address _dispatcher,\n address _vaultLib,\n address[] memory _vaultCallContracts,\n bytes4[] memory _vaultCallSelectors\n ) public {\n if (_vaultCallContracts.length > 0) {\n __registerVaultCalls(_vaultCallContracts, _vaultCallSelectors);\n }\n CREATOR = msg.sender;\n DISPATCHER = _dispatcher;\n VAULT_LIB = _vaultLib;\n }\n\n /////////////\n // GENERAL //\n /////////////\n\n /// @notice Sets the comptrollerLib\n /// @param _comptrollerLib The ComptrollerLib contract address\n /// @dev Can only be set once\n function setComptrollerLib(address _comptrollerLib) external onlyOwner {\n require(\n comptrollerLib == address(0),\n \"setComptrollerLib: This value can only be set once\"\n );\n\n comptrollerLib = _comptrollerLib;\n\n emit ComptrollerLibSet(_comptrollerLib);\n }\n\n /// @notice Sets the status of the protocol to a new state\n /// @param _nextStatus The next status state to set\n function setReleaseStatus(ReleaseStatus _nextStatus) external {\n require(\n msg.sender == IDispatcher(DISPATCHER).getOwner(),\n \"setReleaseStatus: Only the Dispatcher owner can call this function\"\n );\n require(\n _nextStatus != ReleaseStatus.PreLaunch,\n \"setReleaseStatus: Cannot return to PreLaunch status\"\n );\n require(\n comptrollerLib != address(0),\n \"setReleaseStatus: Can only set the release status when comptrollerLib is set\"\n );\n\n ReleaseStatus prevStatus = releaseStatus;\n require(_nextStatus != prevStatus, \"setReleaseStatus: _nextStatus is the current status\");\n\n releaseStatus = _nextStatus;\n\n emit ReleaseStatusSet(prevStatus, _nextStatus);\n }\n\n /// @notice Gets the current owner of the contract\n /// @return owner_ The contract owner address\n /// @dev Dynamically gets the owner based on the Protocol status. The owner is initially the\n /// contract's deployer, for convenience in setting up configuration.\n /// Ownership is claimed when the owner of the Dispatcher contract (the Enzyme Council)\n /// sets the releaseStatus to `Live`.\n function getOwner() public view override returns (address owner_) {\n if (releaseStatus == ReleaseStatus.PreLaunch) {\n return CREATOR;\n }\n\n return IDispatcher(DISPATCHER).getOwner();\n }\n\n ///////////////////\n // FUND CREATION //\n ///////////////////\n\n /// @notice Creates a fully-configured ComptrollerProxy, to which a fund from a previous\n /// release can migrate in a subsequent step\n /// @param _denominationAsset The contract address of the denomination asset for the fund\n /// @param _sharesActionTimelock The minimum number of seconds between any two \"shares actions\"\n /// (buying or selling shares) by the same user\n /// @param _feeManagerConfigData Bytes data for the fees to be enabled for the fund\n /// @param _policyManagerConfigData Bytes data for the policies to be enabled for the fund\n /// @return comptrollerProxy_ The address of the ComptrollerProxy deployed during this action\n function createMigratedFundConfig(\n address _denominationAsset,\n uint256 _sharesActionTimelock,\n bytes calldata _feeManagerConfigData,\n bytes calldata _policyManagerConfigData\n ) external onlyLiveRelease returns (address comptrollerProxy_) {\n comptrollerProxy_ = __deployComptrollerProxy(\n _denominationAsset,\n _sharesActionTimelock,\n _feeManagerConfigData,\n _policyManagerConfigData,\n true\n );\n\n pendingComptrollerProxyToCreator[comptrollerProxy_] = msg.sender;\n\n return comptrollerProxy_;\n }\n\n /// @notice Creates a new fund\n /// @param _fundOwner The address of the owner for the fund\n /// @param _fundName The name of the fund\n /// @param _denominationAsset The contract address of the denomination asset for the fund\n /// @param _sharesActionTimelock The minimum number of seconds between any two \"shares actions\"\n /// (buying or selling shares) by the same user\n /// @param _feeManagerConfigData Bytes data for the fees to be enabled for the fund\n /// @param _policyManagerConfigData Bytes data for the policies to be enabled for the fund\n /// @return comptrollerProxy_ The address of the ComptrollerProxy deployed during this action\n function createNewFund(\n address _fundOwner,\n string calldata _fundName,\n address _denominationAsset,\n uint256 _sharesActionTimelock,\n bytes calldata _feeManagerConfigData,\n bytes calldata _policyManagerConfigData\n ) external onlyLiveRelease returns (address comptrollerProxy_, address vaultProxy_) {\n return\n __createNewFund(\n _fundOwner,\n _fundName,\n _denominationAsset,\n _sharesActionTimelock,\n _feeManagerConfigData,\n _policyManagerConfigData\n );\n }\n\n /// @dev Helper to avoid the stack-too-deep error during createNewFund\n function __createNewFund(\n address _fundOwner,\n string memory _fundName,\n address _denominationAsset,\n uint256 _sharesActionTimelock,\n bytes memory _feeManagerConfigData,\n bytes memory _policyManagerConfigData\n ) private returns (address comptrollerProxy_, address vaultProxy_) {\n require(_fundOwner != address(0), \"__createNewFund: _owner cannot be empty\");\n\n comptrollerProxy_ = __deployComptrollerProxy(\n _denominationAsset,\n _sharesActionTimelock,\n _feeManagerConfigData,\n _policyManagerConfigData,\n false\n );\n\n vaultProxy_ = IDispatcher(DISPATCHER).deployVaultProxy(\n VAULT_LIB,\n _fundOwner,\n comptrollerProxy_,\n _fundName\n );\n\n IComptroller(comptrollerProxy_).activate(vaultProxy_, false);\n\n emit NewFundCreated(\n msg.sender,\n comptrollerProxy_,\n vaultProxy_,\n _fundOwner,\n _fundName,\n _denominationAsset,\n _sharesActionTimelock,\n _feeManagerConfigData,\n _policyManagerConfigData\n );\n\n return (comptrollerProxy_, vaultProxy_);\n }\n\n /// @dev Helper function to deploy a configured ComptrollerProxy\n function __deployComptrollerProxy(\n address _denominationAsset,\n uint256 _sharesActionTimelock,\n bytes memory _feeManagerConfigData,\n bytes memory _policyManagerConfigData,\n bool _forMigration\n ) private returns (address comptrollerProxy_) {\n require(\n _denominationAsset != address(0),\n \"__deployComptrollerProxy: _denominationAsset cannot be empty\"\n );\n\n bytes memory constructData = abi.encodeWithSelector(\n IComptroller.init.selector,\n _denominationAsset,\n _sharesActionTimelock\n );\n comptrollerProxy_ = address(new ComptrollerProxy(constructData, comptrollerLib));\n\n if (_feeManagerConfigData.length > 0 || _policyManagerConfigData.length > 0) {\n IComptroller(comptrollerProxy_).configureExtensions(\n _feeManagerConfigData,\n _policyManagerConfigData\n );\n }\n\n emit ComptrollerProxyDeployed(\n msg.sender,\n comptrollerProxy_,\n _denominationAsset,\n _sharesActionTimelock,\n _feeManagerConfigData,\n _policyManagerConfigData,\n _forMigration\n );\n\n return comptrollerProxy_;\n }\n\n //////////////////\n // MIGRATION IN //\n //////////////////\n\n /// @notice Cancels fund migration\n /// @param _vaultProxy The VaultProxy for which to cancel migration\n function cancelMigration(address _vaultProxy) external {\n __cancelMigration(_vaultProxy, false);\n }\n\n /// @notice Cancels fund migration, bypassing any failures.\n /// Should be used in an emergency only.\n /// @param _vaultProxy The VaultProxy for which to cancel migration\n function cancelMigrationEmergency(address _vaultProxy) external {\n __cancelMigration(_vaultProxy, true);\n }\n\n /// @notice Executes fund migration\n /// @param _vaultProxy The VaultProxy for which to execute the migration\n function executeMigration(address _vaultProxy) external {\n __executeMigration(_vaultProxy, false);\n }\n\n /// @notice Executes fund migration, bypassing any failures.\n /// Should be used in an emergency only.\n /// @param _vaultProxy The VaultProxy for which to execute the migration\n function executeMigrationEmergency(address _vaultProxy) external {\n __executeMigration(_vaultProxy, true);\n }\n\n /// @dev Unimplemented\n function invokeMigrationInCancelHook(\n address,\n address,\n address,\n address\n ) external virtual override {\n return;\n }\n\n /// @notice Signal a fund migration\n /// @param _vaultProxy The VaultProxy for which to signal the migration\n /// @param _comptrollerProxy The ComptrollerProxy for which to signal the migration\n function signalMigration(address _vaultProxy, address _comptrollerProxy) external {\n __signalMigration(_vaultProxy, _comptrollerProxy, false);\n }\n\n /// @notice Signal a fund migration, bypassing any failures.\n /// Should be used in an emergency only.\n /// @param _vaultProxy The VaultProxy for which to signal the migration\n /// @param _comptrollerProxy The ComptrollerProxy for which to signal the migration\n function signalMigrationEmergency(address _vaultProxy, address _comptrollerProxy) external {\n __signalMigration(_vaultProxy, _comptrollerProxy, true);\n }\n\n /// @dev Helper to cancel a migration\n function __cancelMigration(address _vaultProxy, bool _bypassFailure)\n private\n onlyLiveRelease\n onlyMigrator(_vaultProxy)\n {\n IDispatcher(DISPATCHER).cancelMigration(_vaultProxy, _bypassFailure);\n }\n\n /// @dev Helper to execute a migration\n function __executeMigration(address _vaultProxy, bool _bypassFailure)\n private\n onlyLiveRelease\n onlyMigrator(_vaultProxy)\n {\n IDispatcher dispatcherContract = IDispatcher(DISPATCHER);\n\n (, address comptrollerProxy, , ) = dispatcherContract\n .getMigrationRequestDetailsForVaultProxy(_vaultProxy);\n\n dispatcherContract.executeMigration(_vaultProxy, _bypassFailure);\n\n IComptroller(comptrollerProxy).activate(_vaultProxy, true);\n\n delete pendingComptrollerProxyToCreator[comptrollerProxy];\n }\n\n /// @dev Helper to signal a migration\n function __signalMigration(\n address _vaultProxy,\n address _comptrollerProxy,\n bool _bypassFailure\n )\n private\n onlyLiveRelease\n onlyPendingComptrollerProxyCreator(_comptrollerProxy)\n onlyMigrator(_vaultProxy)\n {\n IDispatcher(DISPATCHER).signalMigration(\n _vaultProxy,\n _comptrollerProxy,\n VAULT_LIB,\n _bypassFailure\n );\n }\n\n ///////////////////\n // MIGRATION OUT //\n ///////////////////\n\n /// @notice Allows \"hooking into\" specific moments in the migration pipeline\n /// to execute arbitrary logic during a migration out of this release\n /// @param _vaultProxy The VaultProxy being migrated\n function invokeMigrationOutHook(\n MigrationOutHook _hook,\n address _vaultProxy,\n address,\n address,\n address\n ) external override {\n if (_hook != MigrationOutHook.PreMigrate) {\n return;\n }\n\n require(\n msg.sender == DISPATCHER,\n \"postMigrateOriginHook: Only Dispatcher can call this function\"\n );\n\n // Must use PreMigrate hook to get the ComptrollerProxy from the VaultProxy\n address comptrollerProxy = IVault(_vaultProxy).getAccessor();\n\n // Wind down fund and destroy its config\n IComptroller(comptrollerProxy).destruct();\n }\n\n //////////////\n // REGISTRY //\n //////////////\n\n /// @notice De-registers allowed arbitrary contract calls that can be sent from the VaultProxy\n /// @param _contracts The contracts of the calls to de-register\n /// @param _selectors The selectors of the calls to de-register\n function deregisterVaultCalls(address[] calldata _contracts, bytes4[] calldata _selectors)\n external\n onlyOwner\n {\n require(_contracts.length > 0, \"deregisterVaultCalls: Empty _contracts\");\n require(\n _contracts.length == _selectors.length,\n \"deregisterVaultCalls: Uneven input arrays\"\n );\n\n for (uint256 i; i < _contracts.length; i++) {\n require(\n isRegisteredVaultCall(_contracts[i], _selectors[i]),\n \"deregisterVaultCalls: Call not registered\"\n );\n\n contractToSelectorToIsRegisteredVaultCall[_contracts[i]][_selectors[i]] = false;\n\n emit VaultCallDeregistered(_contracts[i], _selectors[i]);\n }\n }\n\n /// @notice Registers allowed arbitrary contract calls that can be sent from the VaultProxy\n /// @param _contracts The contracts of the calls to register\n /// @param _selectors The selectors of the calls to register\n function registerVaultCalls(address[] calldata _contracts, bytes4[] calldata _selectors)\n external\n onlyOwner\n {\n require(_contracts.length > 0, \"registerVaultCalls: Empty _contracts\");\n\n __registerVaultCalls(_contracts, _selectors);\n }\n\n /// @dev Helper to register allowed vault calls\n function __registerVaultCalls(address[] memory _contracts, bytes4[] memory _selectors)\n private\n {\n require(\n _contracts.length == _selectors.length,\n \"__registerVaultCalls: Uneven input arrays\"\n );\n\n for (uint256 i; i < _contracts.length; i++) {\n require(\n !isRegisteredVaultCall(_contracts[i], _selectors[i]),\n \"__registerVaultCalls: Call already registered\"\n );\n\n contractToSelectorToIsRegisteredVaultCall[_contracts[i]][_selectors[i]] = true;\n\n emit VaultCallRegistered(_contracts[i], _selectors[i]);\n }\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `comptrollerLib` variable value\n /// @return comptrollerLib_ The `comptrollerLib` variable value\n function getComptrollerLib() external view returns (address comptrollerLib_) {\n return comptrollerLib;\n }\n\n /// @notice Gets the `CREATOR` variable value\n /// @return creator_ The `CREATOR` variable value\n function getCreator() external view returns (address creator_) {\n return CREATOR;\n }\n\n /// @notice Gets the `DISPATCHER` variable value\n /// @return dispatcher_ The `DISPATCHER` variable value\n function getDispatcher() external view returns (address dispatcher_) {\n return DISPATCHER;\n }\n\n /// @notice Gets the creator of a pending ComptrollerProxy\n /// @return pendingComptrollerProxyCreator_ The pending ComptrollerProxy creator\n function getPendingComptrollerProxyCreator(address _comptrollerProxy)\n external\n view\n returns (address pendingComptrollerProxyCreator_)\n {\n return pendingComptrollerProxyToCreator[_comptrollerProxy];\n }\n\n /// @notice Gets the `releaseStatus` variable value\n /// @return status_ The `releaseStatus` variable value\n function getReleaseStatus() external view override returns (ReleaseStatus status_) {\n return releaseStatus;\n }\n\n /// @notice Gets the `VAULT_LIB` variable value\n /// @return vaultLib_ The `VAULT_LIB` variable value\n function getVaultLib() external view returns (address vaultLib_) {\n return VAULT_LIB;\n }\n\n /// @notice Checks if a contract call is registered\n /// @param _contract The contract of the call to check\n /// @param _selector The selector of the call to check\n /// @return isRegistered_ True if the call is registered\n function isRegisteredVaultCall(address _contract, bytes4 _selector)\n public\n view\n override\n returns (bool isRegistered_)\n {\n return contractToSelectorToIsRegisteredVaultCall[_contract][_selector];\n }\n}\n" }, "contracts/persistent/utils/IMigrationHookHandler.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title IMigrationHookHandler Interface\n/// @author Enzyme Council \ninterface IMigrationHookHandler {\n enum MigrationOutHook {PreSignal, PostSignal, PreMigrate, PostMigrate, PostCancel}\n\n function invokeMigrationInCancelHook(\n address _vaultProxy,\n address _prevFundDeployer,\n address _nextVaultAccessor,\n address _nextVaultLib\n ) external;\n\n function invokeMigrationOutHook(\n MigrationOutHook _hook,\n address _vaultProxy,\n address _nextFundDeployer,\n address _nextVaultAccessor,\n address _nextVaultLib\n ) external;\n}\n" }, "contracts/release/extensions/integration-manager/IntegrationManager.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/utils/EnumerableSet.sol\";\nimport \"../../core/fund/vault/IVault.sol\";\nimport \"../../infrastructure/price-feeds/derivatives/IDerivativePriceFeed.sol\";\nimport \"../../infrastructure/price-feeds/primitives/IPrimitivePriceFeed.sol\";\nimport \"../../utils/AddressArrayLib.sol\";\nimport \"../../utils/AssetFinalityResolver.sol\";\nimport \"../policy-manager/IPolicyManager.sol\";\nimport \"../utils/ExtensionBase.sol\";\nimport \"../utils/FundDeployerOwnerMixin.sol\";\nimport \"../utils/PermissionedVaultActionMixin.sol\";\nimport \"./integrations/IIntegrationAdapter.sol\";\nimport \"./IIntegrationManager.sol\";\n\n/// @title IntegrationManager\n/// @author Enzyme Council \n/// @notice Extension to handle DeFi integration actions for funds\ncontract IntegrationManager is\n IIntegrationManager,\n ExtensionBase,\n FundDeployerOwnerMixin,\n PermissionedVaultActionMixin,\n AssetFinalityResolver\n{\n using AddressArrayLib for address[];\n using EnumerableSet for EnumerableSet.AddressSet;\n using SafeMath for uint256;\n\n event AdapterDeregistered(address indexed adapter, string indexed identifier);\n\n event AdapterRegistered(address indexed adapter, string indexed identifier);\n\n event AuthUserAddedForFund(address indexed comptrollerProxy, address indexed account);\n\n event AuthUserRemovedForFund(address indexed comptrollerProxy, address indexed account);\n\n event CallOnIntegrationExecutedForFund(\n address indexed comptrollerProxy,\n address vaultProxy,\n address caller,\n address indexed adapter,\n bytes4 indexed selector,\n bytes integrationData,\n address[] incomingAssets,\n uint256[] incomingAssetAmounts,\n address[] outgoingAssets,\n uint256[] outgoingAssetAmounts\n );\n\n address private immutable DERIVATIVE_PRICE_FEED;\n address private immutable POLICY_MANAGER;\n address private immutable PRIMITIVE_PRICE_FEED;\n\n EnumerableSet.AddressSet private registeredAdapters;\n\n mapping(address => mapping(address => bool)) private comptrollerProxyToAcctToIsAuthUser;\n\n constructor(\n address _fundDeployer,\n address _policyManager,\n address _derivativePriceFeed,\n address _primitivePriceFeed,\n address _synthetixPriceFeed,\n address _synthetixAddressResolver\n )\n public\n FundDeployerOwnerMixin(_fundDeployer)\n AssetFinalityResolver(_synthetixPriceFeed, _synthetixAddressResolver)\n {\n DERIVATIVE_PRICE_FEED = _derivativePriceFeed;\n POLICY_MANAGER = _policyManager;\n PRIMITIVE_PRICE_FEED = _primitivePriceFeed;\n }\n\n /////////////\n // GENERAL //\n /////////////\n\n /// @notice Activates the extension by storing the VaultProxy\n function activateForFund(bool) external override {\n __setValidatedVaultProxy(msg.sender);\n }\n\n /// @notice Authorizes a user to act on behalf of a fund via the IntegrationManager\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _who The user to authorize\n function addAuthUserForFund(address _comptrollerProxy, address _who) external {\n __validateSetAuthUser(_comptrollerProxy, _who, true);\n\n comptrollerProxyToAcctToIsAuthUser[_comptrollerProxy][_who] = true;\n\n emit AuthUserAddedForFund(_comptrollerProxy, _who);\n }\n\n /// @notice Deactivate the extension by destroying storage\n function deactivateForFund() external override {\n delete comptrollerProxyToVaultProxy[msg.sender];\n }\n\n /// @notice Removes an authorized user from the IntegrationManager for the given fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _who The authorized user to remove\n function removeAuthUserForFund(address _comptrollerProxy, address _who) external {\n __validateSetAuthUser(_comptrollerProxy, _who, false);\n\n comptrollerProxyToAcctToIsAuthUser[_comptrollerProxy][_who] = false;\n\n emit AuthUserRemovedForFund(_comptrollerProxy, _who);\n }\n\n /// @notice Checks whether an account is an authorized IntegrationManager user for a given fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _who The account to check\n /// @return isAuthUser_ True if the account is an authorized user or the fund owner\n function isAuthUserForFund(address _comptrollerProxy, address _who)\n public\n view\n returns (bool isAuthUser_)\n {\n return\n comptrollerProxyToAcctToIsAuthUser[_comptrollerProxy][_who] ||\n _who == IVault(comptrollerProxyToVaultProxy[_comptrollerProxy]).getOwner();\n }\n\n /// @dev Helper to validate calls to update comptrollerProxyToAcctToIsAuthUser\n function __validateSetAuthUser(\n address _comptrollerProxy,\n address _who,\n bool _nextIsAuthUser\n ) private view {\n require(\n comptrollerProxyToVaultProxy[_comptrollerProxy] != address(0),\n \"__validateSetAuthUser: Fund has not been activated\"\n );\n\n address fundOwner = IVault(comptrollerProxyToVaultProxy[_comptrollerProxy]).getOwner();\n require(\n msg.sender == fundOwner,\n \"__validateSetAuthUser: Only the fund owner can call this function\"\n );\n require(_who != fundOwner, \"__validateSetAuthUser: Cannot set for the fund owner\");\n\n if (_nextIsAuthUser) {\n require(\n !comptrollerProxyToAcctToIsAuthUser[_comptrollerProxy][_who],\n \"__validateSetAuthUser: Account is already an authorized user\"\n );\n } else {\n require(\n comptrollerProxyToAcctToIsAuthUser[_comptrollerProxy][_who],\n \"__validateSetAuthUser: Account is not an authorized user\"\n );\n }\n }\n\n ///////////////////////////////\n // CALL-ON-EXTENSION ACTIONS //\n ///////////////////////////////\n\n /// @notice Receives a dispatched `callOnExtension` from a fund's ComptrollerProxy\n /// @param _caller The user who called for this action\n /// @param _actionId An ID representing the desired action\n /// @param _callArgs The encoded args for the action\n function receiveCallFromComptroller(\n address _caller,\n uint256 _actionId,\n bytes calldata _callArgs\n ) external override {\n // Since we validate and store the ComptrollerProxy-VaultProxy pairing during\n // activateForFund(), this function does not require further validation of the\n // sending ComptrollerProxy\n address vaultProxy = comptrollerProxyToVaultProxy[msg.sender];\n require(vaultProxy != address(0), \"receiveCallFromComptroller: Fund is not active\");\n require(\n isAuthUserForFund(msg.sender, _caller),\n \"receiveCallFromComptroller: Not an authorized user\"\n );\n\n // Dispatch the action\n if (_actionId == 0) {\n __callOnIntegration(_caller, vaultProxy, _callArgs);\n } else if (_actionId == 1) {\n __addZeroBalanceTrackedAssets(vaultProxy, _callArgs);\n } else if (_actionId == 2) {\n __removeZeroBalanceTrackedAssets(vaultProxy, _callArgs);\n } else {\n revert(\"receiveCallFromComptroller: Invalid _actionId\");\n }\n }\n\n /// @dev Adds assets with a zero balance as tracked assets of the fund\n function __addZeroBalanceTrackedAssets(address _vaultProxy, bytes memory _callArgs) private {\n address[] memory assets = abi.decode(_callArgs, (address[]));\n for (uint256 i; i < assets.length; i++) {\n require(\n __finalizeIfSynthAndGetAssetBalance(_vaultProxy, assets[i], true) == 0,\n \"__addZeroBalanceTrackedAssets: Balance is not zero\"\n );\n\n __addTrackedAsset(msg.sender, assets[i]);\n }\n }\n\n /// @dev Removes assets with a zero balance from tracked assets of the fund\n function __removeZeroBalanceTrackedAssets(address _vaultProxy, bytes memory _callArgs)\n private\n {\n address[] memory assets = abi.decode(_callArgs, (address[]));\n address denominationAsset = IComptroller(msg.sender).getDenominationAsset();\n for (uint256 i; i < assets.length; i++) {\n require(\n assets[i] != denominationAsset,\n \"__removeZeroBalanceTrackedAssets: Cannot remove denomination asset\"\n );\n require(\n __finalizeIfSynthAndGetAssetBalance(_vaultProxy, assets[i], true) == 0,\n \"__removeZeroBalanceTrackedAssets: Balance is not zero\"\n );\n\n __removeTrackedAsset(msg.sender, assets[i]);\n }\n }\n\n /////////////////////////\n // CALL ON INTEGRATION //\n /////////////////////////\n\n /// @notice Universal method for calling third party contract functions through adapters\n /// @param _caller The caller of this function via the ComptrollerProxy\n /// @param _vaultProxy The VaultProxy of the fund\n /// @param _callArgs The encoded args for this function\n /// - _adapter Adapter of the integration on which to execute a call\n /// - _selector Method selector of the adapter method to execute\n /// - _integrationData Encoded arguments specific to the adapter\n /// @dev msg.sender is the ComptrollerProxy.\n /// Refer to specific adapter to see how to encode its arguments.\n function __callOnIntegration(\n address _caller,\n address _vaultProxy,\n bytes memory _callArgs\n ) private {\n (\n address adapter,\n bytes4 selector,\n bytes memory integrationData\n ) = __decodeCallOnIntegrationArgs(_callArgs);\n\n __preCoIHook(adapter, selector);\n\n /// Passing decoded _callArgs leads to stack-too-deep error\n (\n address[] memory incomingAssets,\n uint256[] memory incomingAssetAmounts,\n address[] memory outgoingAssets,\n uint256[] memory outgoingAssetAmounts\n ) = __callOnIntegrationInner(_vaultProxy, _callArgs);\n\n __postCoIHook(\n adapter,\n selector,\n incomingAssets,\n incomingAssetAmounts,\n outgoingAssets,\n outgoingAssetAmounts\n );\n\n __emitCoIEvent(\n _vaultProxy,\n _caller,\n adapter,\n selector,\n integrationData,\n incomingAssets,\n incomingAssetAmounts,\n outgoingAssets,\n outgoingAssetAmounts\n );\n }\n\n /// @dev Helper to execute the bulk of logic of callOnIntegration.\n /// Avoids the stack-too-deep-error.\n function __callOnIntegrationInner(address vaultProxy, bytes memory _callArgs)\n private\n returns (\n address[] memory incomingAssets_,\n uint256[] memory incomingAssetAmounts_,\n address[] memory outgoingAssets_,\n uint256[] memory outgoingAssetAmounts_\n )\n {\n (\n address[] memory expectedIncomingAssets,\n uint256[] memory preCallIncomingAssetBalances,\n uint256[] memory minIncomingAssetAmounts,\n SpendAssetsHandleType spendAssetsHandleType,\n address[] memory spendAssets,\n uint256[] memory maxSpendAssetAmounts,\n uint256[] memory preCallSpendAssetBalances\n ) = __preProcessCoI(vaultProxy, _callArgs);\n\n __executeCoI(\n vaultProxy,\n _callArgs,\n abi.encode(\n spendAssetsHandleType,\n spendAssets,\n maxSpendAssetAmounts,\n expectedIncomingAssets\n )\n );\n\n (\n incomingAssets_,\n incomingAssetAmounts_,\n outgoingAssets_,\n outgoingAssetAmounts_\n ) = __postProcessCoI(\n vaultProxy,\n expectedIncomingAssets,\n preCallIncomingAssetBalances,\n minIncomingAssetAmounts,\n spendAssetsHandleType,\n spendAssets,\n maxSpendAssetAmounts,\n preCallSpendAssetBalances\n );\n\n return (incomingAssets_, incomingAssetAmounts_, outgoingAssets_, outgoingAssetAmounts_);\n }\n\n /// @dev Helper to decode CoI args\n function __decodeCallOnIntegrationArgs(bytes memory _callArgs)\n private\n pure\n returns (\n address adapter_,\n bytes4 selector_,\n bytes memory integrationData_\n )\n {\n return abi.decode(_callArgs, (address, bytes4, bytes));\n }\n\n /// @dev Helper to emit the CallOnIntegrationExecuted event.\n /// Avoids stack-too-deep error.\n function __emitCoIEvent(\n address _vaultProxy,\n address _caller,\n address _adapter,\n bytes4 _selector,\n bytes memory _integrationData,\n address[] memory _incomingAssets,\n uint256[] memory _incomingAssetAmounts,\n address[] memory _outgoingAssets,\n uint256[] memory _outgoingAssetAmounts\n ) private {\n emit CallOnIntegrationExecutedForFund(\n msg.sender,\n _vaultProxy,\n _caller,\n _adapter,\n _selector,\n _integrationData,\n _incomingAssets,\n _incomingAssetAmounts,\n _outgoingAssets,\n _outgoingAssetAmounts\n );\n }\n\n /// @dev Helper to execute a call to an integration\n /// @dev Avoids stack-too-deep error\n function __executeCoI(\n address _vaultProxy,\n bytes memory _callArgs,\n bytes memory _encodedAssetTransferArgs\n ) private {\n (\n address adapter,\n bytes4 selector,\n bytes memory integrationData\n ) = __decodeCallOnIntegrationArgs(_callArgs);\n\n (bool success, bytes memory returnData) = adapter.call(\n abi.encodeWithSelector(\n selector,\n _vaultProxy,\n integrationData,\n _encodedAssetTransferArgs\n )\n );\n require(success, string(returnData));\n }\n\n /// @dev Helper to get the vault's balance of a particular asset\n function __getVaultAssetBalance(address _vaultProxy, address _asset)\n private\n view\n returns (uint256)\n {\n return ERC20(_asset).balanceOf(_vaultProxy);\n }\n\n /// @dev Helper to check if an asset is supported\n function __isSupportedAsset(address _asset) private view returns (bool isSupported_) {\n return\n IPrimitivePriceFeed(PRIMITIVE_PRICE_FEED).isSupportedAsset(_asset) ||\n IDerivativePriceFeed(DERIVATIVE_PRICE_FEED).isSupportedAsset(_asset);\n }\n\n /// @dev Helper for the actions to take on external contracts prior to executing CoI\n function __preCoIHook(address _adapter, bytes4 _selector) private {\n IPolicyManager(POLICY_MANAGER).validatePolicies(\n msg.sender,\n IPolicyManager.PolicyHook.PreCallOnIntegration,\n abi.encode(_adapter, _selector)\n );\n }\n\n /// @dev Helper for the internal actions to take prior to executing CoI\n function __preProcessCoI(address _vaultProxy, bytes memory _callArgs)\n private\n returns (\n address[] memory expectedIncomingAssets_,\n uint256[] memory preCallIncomingAssetBalances_,\n uint256[] memory minIncomingAssetAmounts_,\n SpendAssetsHandleType spendAssetsHandleType_,\n address[] memory spendAssets_,\n uint256[] memory maxSpendAssetAmounts_,\n uint256[] memory preCallSpendAssetBalances_\n )\n {\n (\n address adapter,\n bytes4 selector,\n bytes memory integrationData\n ) = __decodeCallOnIntegrationArgs(_callArgs);\n\n require(adapterIsRegistered(adapter), \"callOnIntegration: Adapter is not registered\");\n\n // Note that expected incoming and spend assets are allowed to overlap\n // (e.g., a fee for the incomingAsset charged in a spend asset)\n (\n spendAssetsHandleType_,\n spendAssets_,\n maxSpendAssetAmounts_,\n expectedIncomingAssets_,\n minIncomingAssetAmounts_\n ) = IIntegrationAdapter(adapter).parseAssetsForMethod(selector, integrationData);\n require(\n spendAssets_.length == maxSpendAssetAmounts_.length,\n \"__preProcessCoI: Spend assets arrays unequal\"\n );\n require(\n expectedIncomingAssets_.length == minIncomingAssetAmounts_.length,\n \"__preProcessCoI: Incoming assets arrays unequal\"\n );\n require(spendAssets_.isUniqueSet(), \"__preProcessCoI: Duplicate spend asset\");\n require(\n expectedIncomingAssets_.isUniqueSet(),\n \"__preProcessCoI: Duplicate incoming asset\"\n );\n\n IVault vaultProxyContract = IVault(_vaultProxy);\n\n preCallIncomingAssetBalances_ = new uint256[](expectedIncomingAssets_.length);\n for (uint256 i = 0; i < expectedIncomingAssets_.length; i++) {\n require(\n expectedIncomingAssets_[i] != address(0),\n \"__preProcessCoI: Empty incoming asset address\"\n );\n require(\n minIncomingAssetAmounts_[i] > 0,\n \"__preProcessCoI: minIncomingAssetAmount must be >0\"\n );\n require(\n __isSupportedAsset(expectedIncomingAssets_[i]),\n \"__preProcessCoI: Non-receivable incoming asset\"\n );\n\n // Get pre-call balance of each incoming asset.\n // If the asset is not tracked by the fund, allow the balance to default to 0.\n if (vaultProxyContract.isTrackedAsset(expectedIncomingAssets_[i])) {\n // We do not require incoming asset finality, but we attempt to finalize so that\n // the final incoming asset amount is more accurate. There is no need to finalize\n // post-tx.\n preCallIncomingAssetBalances_[i] = __finalizeIfSynthAndGetAssetBalance(\n _vaultProxy,\n expectedIncomingAssets_[i],\n false\n );\n }\n }\n\n // Get pre-call balances of spend assets and grant approvals to adapter\n preCallSpendAssetBalances_ = new uint256[](spendAssets_.length);\n for (uint256 i = 0; i < spendAssets_.length; i++) {\n require(spendAssets_[i] != address(0), \"__preProcessCoI: Empty spend asset\");\n require(maxSpendAssetAmounts_[i] > 0, \"__preProcessCoI: Empty max spend asset amount\");\n // A spend asset must either be a tracked asset of the fund or a supported asset,\n // in order to prevent seeding the fund with a malicious token and performing arbitrary\n // actions within an adapter.\n require(\n vaultProxyContract.isTrackedAsset(spendAssets_[i]) ||\n __isSupportedAsset(spendAssets_[i]),\n \"__preProcessCoI: Non-spendable spend asset\"\n );\n\n // If spend asset is also an incoming asset, no need to record its balance\n if (!expectedIncomingAssets_.contains(spendAssets_[i])) {\n // By requiring spend asset finality before CoI, we will know whether or\n // not the asset balance was entirely spent during the call. There is no need\n // to finalize post-tx.\n preCallSpendAssetBalances_[i] = __finalizeIfSynthAndGetAssetBalance(\n _vaultProxy,\n spendAssets_[i],\n true\n );\n }\n\n // Grant spend assets access to the adapter.\n // Note that spendAssets_ is already asserted to a unique set.\n if (spendAssetsHandleType_ == SpendAssetsHandleType.Approve) {\n // Use exact approve amount rather than increasing allowances,\n // because all adapters finish their actions atomically.\n __approveAssetSpender(\n msg.sender,\n spendAssets_[i],\n adapter,\n maxSpendAssetAmounts_[i]\n );\n } else if (spendAssetsHandleType_ == SpendAssetsHandleType.Transfer) {\n __withdrawAssetTo(msg.sender, spendAssets_[i], adapter, maxSpendAssetAmounts_[i]);\n } else if (spendAssetsHandleType_ == SpendAssetsHandleType.Remove) {\n __removeTrackedAsset(msg.sender, spendAssets_[i]);\n }\n }\n }\n\n /// @dev Helper for the actions to take on external contracts after executing CoI\n function __postCoIHook(\n address _adapter,\n bytes4 _selector,\n address[] memory _incomingAssets,\n uint256[] memory _incomingAssetAmounts,\n address[] memory _outgoingAssets,\n uint256[] memory _outgoingAssetAmounts\n ) private {\n IPolicyManager(POLICY_MANAGER).validatePolicies(\n msg.sender,\n IPolicyManager.PolicyHook.PostCallOnIntegration,\n abi.encode(\n _adapter,\n _selector,\n _incomingAssets,\n _incomingAssetAmounts,\n _outgoingAssets,\n _outgoingAssetAmounts\n )\n );\n }\n\n /// @dev Helper to reconcile and format incoming and outgoing assets after executing CoI\n function __postProcessCoI(\n address _vaultProxy,\n address[] memory _expectedIncomingAssets,\n uint256[] memory _preCallIncomingAssetBalances,\n uint256[] memory _minIncomingAssetAmounts,\n SpendAssetsHandleType _spendAssetsHandleType,\n address[] memory _spendAssets,\n uint256[] memory _maxSpendAssetAmounts,\n uint256[] memory _preCallSpendAssetBalances\n )\n private\n returns (\n address[] memory incomingAssets_,\n uint256[] memory incomingAssetAmounts_,\n address[] memory outgoingAssets_,\n uint256[] memory outgoingAssetAmounts_\n )\n {\n address[] memory increasedSpendAssets;\n uint256[] memory increasedSpendAssetAmounts;\n (\n outgoingAssets_,\n outgoingAssetAmounts_,\n increasedSpendAssets,\n increasedSpendAssetAmounts\n ) = __reconcileCoISpendAssets(\n _vaultProxy,\n _spendAssetsHandleType,\n _spendAssets,\n _maxSpendAssetAmounts,\n _preCallSpendAssetBalances\n );\n\n (incomingAssets_, incomingAssetAmounts_) = __reconcileCoIIncomingAssets(\n _vaultProxy,\n _expectedIncomingAssets,\n _preCallIncomingAssetBalances,\n _minIncomingAssetAmounts,\n increasedSpendAssets,\n increasedSpendAssetAmounts\n );\n\n return (incomingAssets_, incomingAssetAmounts_, outgoingAssets_, outgoingAssetAmounts_);\n }\n\n /// @dev Helper to process incoming asset balance changes.\n /// See __reconcileCoISpendAssets() for explanation on \"increasedSpendAssets\".\n function __reconcileCoIIncomingAssets(\n address _vaultProxy,\n address[] memory _expectedIncomingAssets,\n uint256[] memory _preCallIncomingAssetBalances,\n uint256[] memory _minIncomingAssetAmounts,\n address[] memory _increasedSpendAssets,\n uint256[] memory _increasedSpendAssetAmounts\n ) private returns (address[] memory incomingAssets_, uint256[] memory incomingAssetAmounts_) {\n // Incoming assets = expected incoming assets + spend assets with increased balances\n uint256 incomingAssetsCount = _expectedIncomingAssets.length.add(\n _increasedSpendAssets.length\n );\n\n // Calculate and validate incoming asset amounts\n incomingAssets_ = new address[](incomingAssetsCount);\n incomingAssetAmounts_ = new uint256[](incomingAssetsCount);\n for (uint256 i = 0; i < _expectedIncomingAssets.length; i++) {\n uint256 balanceDiff = __getVaultAssetBalance(_vaultProxy, _expectedIncomingAssets[i])\n .sub(_preCallIncomingAssetBalances[i]);\n require(\n balanceDiff >= _minIncomingAssetAmounts[i],\n \"__reconcileCoIAssets: Received incoming asset less than expected\"\n );\n\n // Even if the asset's previous balance was >0, it might not have been tracked\n __addTrackedAsset(msg.sender, _expectedIncomingAssets[i]);\n\n incomingAssets_[i] = _expectedIncomingAssets[i];\n incomingAssetAmounts_[i] = balanceDiff;\n }\n\n // Append increaseSpendAssets to incomingAsset vars\n if (_increasedSpendAssets.length > 0) {\n uint256 incomingAssetIndex = _expectedIncomingAssets.length;\n for (uint256 i = 0; i < _increasedSpendAssets.length; i++) {\n incomingAssets_[incomingAssetIndex] = _increasedSpendAssets[i];\n incomingAssetAmounts_[incomingAssetIndex] = _increasedSpendAssetAmounts[i];\n incomingAssetIndex++;\n }\n }\n\n return (incomingAssets_, incomingAssetAmounts_);\n }\n\n /// @dev Helper to process spend asset balance changes.\n /// \"outgoingAssets\" are the spend assets with a decrease in balance.\n /// \"increasedSpendAssets\" are the spend assets with an unexpected increase in balance.\n /// For example, \"increasedSpendAssets\" can occur if an adapter has a pre-balance of\n /// the spendAsset, which would be transferred to the fund at the end of the tx.\n function __reconcileCoISpendAssets(\n address _vaultProxy,\n SpendAssetsHandleType _spendAssetsHandleType,\n address[] memory _spendAssets,\n uint256[] memory _maxSpendAssetAmounts,\n uint256[] memory _preCallSpendAssetBalances\n )\n private\n returns (\n address[] memory outgoingAssets_,\n uint256[] memory outgoingAssetAmounts_,\n address[] memory increasedSpendAssets_,\n uint256[] memory increasedSpendAssetAmounts_\n )\n {\n // Determine spend asset balance changes\n uint256[] memory postCallSpendAssetBalances = new uint256[](_spendAssets.length);\n uint256 outgoingAssetsCount;\n uint256 increasedSpendAssetsCount;\n for (uint256 i = 0; i < _spendAssets.length; i++) {\n // If spend asset's initial balance is 0, then it is an incoming asset\n if (_preCallSpendAssetBalances[i] == 0) {\n continue;\n }\n\n // Handle SpendAssetsHandleType.Remove separately\n if (_spendAssetsHandleType == SpendAssetsHandleType.Remove) {\n outgoingAssetsCount++;\n continue;\n }\n\n // Determine if the asset is outgoing or incoming, and store the post-balance for later use\n postCallSpendAssetBalances[i] = __getVaultAssetBalance(_vaultProxy, _spendAssets[i]);\n // If the pre- and post- balances are equal, then the asset is neither incoming nor outgoing\n if (postCallSpendAssetBalances[i] < _preCallSpendAssetBalances[i]) {\n outgoingAssetsCount++;\n } else if (postCallSpendAssetBalances[i] > _preCallSpendAssetBalances[i]) {\n increasedSpendAssetsCount++;\n }\n }\n\n // Format outgoingAssets and increasedSpendAssets (spend assets with unexpected increase in balance)\n outgoingAssets_ = new address[](outgoingAssetsCount);\n outgoingAssetAmounts_ = new uint256[](outgoingAssetsCount);\n increasedSpendAssets_ = new address[](increasedSpendAssetsCount);\n increasedSpendAssetAmounts_ = new uint256[](increasedSpendAssetsCount);\n uint256 outgoingAssetsIndex;\n uint256 increasedSpendAssetsIndex;\n for (uint256 i = 0; i < _spendAssets.length; i++) {\n // If spend asset's initial balance is 0, then it is an incoming asset.\n if (_preCallSpendAssetBalances[i] == 0) {\n continue;\n }\n\n // Handle SpendAssetsHandleType.Remove separately.\n // No need to validate the max spend asset amount.\n if (_spendAssetsHandleType == SpendAssetsHandleType.Remove) {\n outgoingAssets_[outgoingAssetsIndex] = _spendAssets[i];\n outgoingAssetAmounts_[outgoingAssetsIndex] = _preCallSpendAssetBalances[i];\n outgoingAssetsIndex++;\n continue;\n }\n\n // If the pre- and post- balances are equal, then the asset is neither incoming nor outgoing\n if (postCallSpendAssetBalances[i] < _preCallSpendAssetBalances[i]) {\n if (postCallSpendAssetBalances[i] == 0) {\n __removeTrackedAsset(msg.sender, _spendAssets[i]);\n outgoingAssetAmounts_[outgoingAssetsIndex] = _preCallSpendAssetBalances[i];\n } else {\n outgoingAssetAmounts_[outgoingAssetsIndex] = _preCallSpendAssetBalances[i].sub(\n postCallSpendAssetBalances[i]\n );\n }\n require(\n outgoingAssetAmounts_[outgoingAssetsIndex] <= _maxSpendAssetAmounts[i],\n \"__reconcileCoISpendAssets: Spent amount greater than expected\"\n );\n\n outgoingAssets_[outgoingAssetsIndex] = _spendAssets[i];\n outgoingAssetsIndex++;\n } else if (postCallSpendAssetBalances[i] > _preCallSpendAssetBalances[i]) {\n increasedSpendAssetAmounts_[increasedSpendAssetsIndex] = postCallSpendAssetBalances[i]\n .sub(_preCallSpendAssetBalances[i]);\n increasedSpendAssets_[increasedSpendAssetsIndex] = _spendAssets[i];\n increasedSpendAssetsIndex++;\n }\n }\n\n return (\n outgoingAssets_,\n outgoingAssetAmounts_,\n increasedSpendAssets_,\n increasedSpendAssetAmounts_\n );\n }\n\n ///////////////////////////\n // INTEGRATIONS REGISTRY //\n ///////////////////////////\n\n /// @notice Remove integration adapters from the list of registered adapters\n /// @param _adapters Addresses of adapters to be deregistered\n function deregisterAdapters(address[] calldata _adapters) external onlyFundDeployerOwner {\n require(_adapters.length > 0, \"deregisterAdapters: _adapters cannot be empty\");\n\n for (uint256 i; i < _adapters.length; i++) {\n require(\n adapterIsRegistered(_adapters[i]),\n \"deregisterAdapters: Adapter is not registered\"\n );\n\n registeredAdapters.remove(_adapters[i]);\n\n emit AdapterDeregistered(_adapters[i], IIntegrationAdapter(_adapters[i]).identifier());\n }\n }\n\n /// @notice Add integration adapters to the list of registered adapters\n /// @param _adapters Addresses of adapters to be registered\n function registerAdapters(address[] calldata _adapters) external onlyFundDeployerOwner {\n require(_adapters.length > 0, \"registerAdapters: _adapters cannot be empty\");\n\n for (uint256 i; i < _adapters.length; i++) {\n require(_adapters[i] != address(0), \"registerAdapters: Adapter cannot be empty\");\n\n require(\n !adapterIsRegistered(_adapters[i]),\n \"registerAdapters: Adapter already registered\"\n );\n\n registeredAdapters.add(_adapters[i]);\n\n emit AdapterRegistered(_adapters[i], IIntegrationAdapter(_adapters[i]).identifier());\n }\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Checks if an integration adapter is registered\n /// @param _adapter The adapter to check\n /// @return isRegistered_ True if the adapter is registered\n function adapterIsRegistered(address _adapter) public view returns (bool isRegistered_) {\n return registeredAdapters.contains(_adapter);\n }\n\n /// @notice Gets the `DERIVATIVE_PRICE_FEED` variable\n /// @return derivativePriceFeed_ The `DERIVATIVE_PRICE_FEED` variable value\n function getDerivativePriceFeed() external view returns (address derivativePriceFeed_) {\n return DERIVATIVE_PRICE_FEED;\n }\n\n /// @notice Gets the `POLICY_MANAGER` variable\n /// @return policyManager_ The `POLICY_MANAGER` variable value\n function getPolicyManager() external view returns (address policyManager_) {\n return POLICY_MANAGER;\n }\n\n /// @notice Gets the `PRIMITIVE_PRICE_FEED` variable\n /// @return primitivePriceFeed_ The `PRIMITIVE_PRICE_FEED` variable value\n function getPrimitivePriceFeed() external view returns (address primitivePriceFeed_) {\n return PRIMITIVE_PRICE_FEED;\n }\n\n /// @notice Gets all registered integration adapters\n /// @return registeredAdaptersArray_ A list of all registered integration adapters\n function getRegisteredAdapters()\n external\n view\n returns (address[] memory registeredAdaptersArray_)\n {\n registeredAdaptersArray_ = new address[](registeredAdapters.length());\n for (uint256 i = 0; i < registeredAdaptersArray_.length; i++) {\n registeredAdaptersArray_[i] = registeredAdapters.at(i);\n }\n\n return registeredAdaptersArray_;\n }\n}\n" }, "contracts/release/extensions/integration-manager/integrations/adapters/SynthetixAdapter.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../../../infrastructure/price-feeds/derivatives/feeds/SynthetixPriceFeed.sol\";\nimport \"../../../../interfaces/ISynthetix.sol\";\nimport \"../utils/AdapterBase.sol\";\n\n/// @title SynthetixAdapter Contract\n/// @author Enzyme Council \n/// @notice Adapter for interacting with Synthetix\ncontract SynthetixAdapter is AdapterBase {\n address private immutable ORIGINATOR;\n address private immutable SYNTHETIX;\n address private immutable SYNTHETIX_PRICE_FEED;\n bytes32 private immutable TRACKING_CODE;\n\n constructor(\n address _integrationManager,\n address _synthetixPriceFeed,\n address _originator,\n address _synthetix,\n bytes32 _trackingCode\n ) public AdapterBase(_integrationManager) {\n ORIGINATOR = _originator;\n SYNTHETIX = _synthetix;\n SYNTHETIX_PRICE_FEED = _synthetixPriceFeed;\n TRACKING_CODE = _trackingCode;\n }\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Provides a constant string identifier for an adapter\n /// @return identifier_ An identifier string\n function identifier() external pure override returns (string memory identifier_) {\n return \"SYNTHETIX\";\n }\n\n /// @notice Parses the expected assets to receive from a call on integration\n /// @param _selector The function selector for the callOnIntegration\n /// @param _encodedCallArgs The encoded parameters for the callOnIntegration\n /// @return spendAssetsHandleType_ A type that dictates how to handle granting\n /// the adapter access to spend assets (`None` by default)\n /// @return spendAssets_ The assets to spend in the call\n /// @return spendAssetAmounts_ The max asset amounts to spend in the call\n /// @return incomingAssets_ The assets to receive in the call\n /// @return minIncomingAssetAmounts_ The min asset amounts to receive in the call\n function parseAssetsForMethod(bytes4 _selector, bytes calldata _encodedCallArgs)\n external\n view\n override\n returns (\n IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,\n address[] memory spendAssets_,\n uint256[] memory spendAssetAmounts_,\n address[] memory incomingAssets_,\n uint256[] memory minIncomingAssetAmounts_\n )\n {\n require(_selector == TAKE_ORDER_SELECTOR, \"parseAssetsForMethod: _selector invalid\");\n\n (\n address incomingAsset,\n uint256 minIncomingAssetAmount,\n address outgoingAsset,\n uint256 outgoingAssetAmount\n ) = __decodeCallArgs(_encodedCallArgs);\n\n spendAssets_ = new address[](1);\n spendAssets_[0] = outgoingAsset;\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = outgoingAssetAmount;\n\n incomingAssets_ = new address[](1);\n incomingAssets_[0] = incomingAsset;\n minIncomingAssetAmounts_ = new uint256[](1);\n minIncomingAssetAmounts_[0] = minIncomingAssetAmount;\n\n return (\n IIntegrationManager.SpendAssetsHandleType.None,\n spendAssets_,\n spendAssetAmounts_,\n incomingAssets_,\n minIncomingAssetAmounts_\n );\n }\n\n /// @notice Trades assets on Synthetix\n /// @param _vaultProxy The VaultProxy of the calling fund\n /// @param _encodedCallArgs Encoded order parameters\n function takeOrder(\n address _vaultProxy,\n bytes calldata _encodedCallArgs,\n bytes calldata\n ) external onlyIntegrationManager {\n (\n address incomingAsset,\n ,\n address outgoingAsset,\n uint256 outgoingAssetAmount\n ) = __decodeCallArgs(_encodedCallArgs);\n\n address[] memory synths = new address[](2);\n synths[0] = outgoingAsset;\n synths[1] = incomingAsset;\n\n bytes32[] memory currencyKeys = SynthetixPriceFeed(SYNTHETIX_PRICE_FEED)\n .getCurrencyKeysForSynths(synths);\n\n ISynthetix(SYNTHETIX).exchangeOnBehalfWithTracking(\n _vaultProxy,\n currencyKeys[0],\n outgoingAssetAmount,\n currencyKeys[1],\n ORIGINATOR,\n TRACKING_CODE\n );\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Helper to decode the encoded call arguments\n function __decodeCallArgs(bytes memory _encodedCallArgs)\n private\n pure\n returns (\n address incomingAsset_,\n uint256 minIncomingAssetAmount_,\n address outgoingAsset_,\n uint256 outgoingAssetAmount_\n )\n {\n return abi.decode(_encodedCallArgs, (address, uint256, address, uint256));\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `ORIGINATOR` variable\n /// @return originator_ The `ORIGINATOR` variable value\n function getOriginator() external view returns (address originator_) {\n return ORIGINATOR;\n }\n\n /// @notice Gets the `SYNTHETIX` variable\n /// @return synthetix_ The `SYNTHETIX` variable value\n function getSynthetix() external view returns (address synthetix_) {\n return SYNTHETIX;\n }\n\n /// @notice Gets the `SYNTHETIX_PRICE_FEED` variable\n /// @return synthetixPriceFeed_ The `SYNTHETIX_PRICE_FEED` variable value\n function getSynthetixPriceFeed() external view returns (address synthetixPriceFeed_) {\n return SYNTHETIX_PRICE_FEED;\n }\n\n /// @notice Gets the `TRACKING_CODE` variable\n /// @return trackingCode_ The `TRACKING_CODE` variable value\n function getTrackingCode() external view returns (bytes32 trackingCode_) {\n return TRACKING_CODE;\n }\n}\n" }, "contracts/release/infrastructure/price-feeds/primitives/ChainlinkPriceFeed.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"../../../interfaces/IChainlinkAggregator.sol\";\nimport \"../../utils/DispatcherOwnerMixin.sol\";\nimport \"./IPrimitivePriceFeed.sol\";\n\n/// @title ChainlinkPriceFeed Contract\n/// @author Enzyme Council \n/// @notice A price feed that uses Chainlink oracles as price sources\ncontract ChainlinkPriceFeed is IPrimitivePriceFeed, DispatcherOwnerMixin {\n using SafeMath for uint256;\n\n event EthUsdAggregatorSet(address prevEthUsdAggregator, address nextEthUsdAggregator);\n\n event PrimitiveAdded(\n address indexed primitive,\n address aggregator,\n RateAsset rateAsset,\n uint256 unit\n );\n\n event PrimitiveRemoved(address indexed primitive);\n\n event PrimitiveUpdated(\n address indexed primitive,\n address prevAggregator,\n address nextAggregator\n );\n\n event StalePrimitiveRemoved(address indexed primitive);\n\n event StaleRateThresholdSet(uint256 prevStaleRateThreshold, uint256 nextStaleRateThreshold);\n\n enum RateAsset {ETH, USD}\n\n struct AggregatorInfo {\n address aggregator;\n RateAsset rateAsset;\n }\n\n uint256 private constant ETH_UNIT = 10**18;\n address private immutable WETH_TOKEN;\n\n address private ethUsdAggregator;\n uint256 private staleRateThreshold;\n mapping(address => AggregatorInfo) private primitiveToAggregatorInfo;\n mapping(address => uint256) private primitiveToUnit;\n\n constructor(\n address _dispatcher,\n address _wethToken,\n address _ethUsdAggregator,\n address[] memory _primitives,\n address[] memory _aggregators,\n RateAsset[] memory _rateAssets\n ) public DispatcherOwnerMixin(_dispatcher) {\n WETH_TOKEN = _wethToken;\n staleRateThreshold = 25 hours; // 24 hour heartbeat + 1hr buffer\n __setEthUsdAggregator(_ethUsdAggregator);\n if (_primitives.length > 0) {\n __addPrimitives(_primitives, _aggregators, _rateAssets);\n }\n }\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Calculates the value of a base asset in terms of a quote asset (using a canonical rate)\n /// @param _baseAsset The base asset\n /// @param _baseAssetAmount The base asset amount to convert\n /// @param _quoteAsset The quote asset\n /// @return quoteAssetAmount_ The equivalent quote asset amount\n /// @return isValid_ True if the rates used in calculations are deemed valid\n function calcCanonicalValue(\n address _baseAsset,\n uint256 _baseAssetAmount,\n address _quoteAsset\n ) public view override returns (uint256 quoteAssetAmount_, bool isValid_) {\n // Case where _baseAsset == _quoteAsset is handled by ValueInterpreter\n\n int256 baseAssetRate = __getLatestRateData(_baseAsset);\n if (baseAssetRate <= 0) {\n return (0, false);\n }\n\n int256 quoteAssetRate = __getLatestRateData(_quoteAsset);\n if (quoteAssetRate <= 0) {\n return (0, false);\n }\n\n (quoteAssetAmount_, isValid_) = __calcConversionAmount(\n _baseAsset,\n _baseAssetAmount,\n uint256(baseAssetRate),\n _quoteAsset,\n uint256(quoteAssetRate)\n );\n\n return (quoteAssetAmount_, isValid_);\n }\n\n /// @notice Calculates the value of a base asset in terms of a quote asset (using a live rate)\n /// @param _baseAsset The base asset\n /// @param _baseAssetAmount The base asset amount to convert\n /// @param _quoteAsset The quote asset\n /// @return quoteAssetAmount_ The equivalent quote asset amount\n /// @return isValid_ True if the rates used in calculations are deemed valid\n /// @dev Live and canonical values are the same for Chainlink\n function calcLiveValue(\n address _baseAsset,\n uint256 _baseAssetAmount,\n address _quoteAsset\n ) external view override returns (uint256 quoteAssetAmount_, bool isValid_) {\n return calcCanonicalValue(_baseAsset, _baseAssetAmount, _quoteAsset);\n }\n\n /// @notice Checks whether an asset is a supported primitive of the price feed\n /// @param _asset The asset to check\n /// @return isSupported_ True if the asset is a supported primitive\n function isSupportedAsset(address _asset) external view override returns (bool isSupported_) {\n return _asset == WETH_TOKEN || primitiveToAggregatorInfo[_asset].aggregator != address(0);\n }\n\n /// @notice Sets the `ehUsdAggregator` variable value\n /// @param _nextEthUsdAggregator The `ehUsdAggregator` value to set\n function setEthUsdAggregator(address _nextEthUsdAggregator) external onlyDispatcherOwner {\n __setEthUsdAggregator(_nextEthUsdAggregator);\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Helper to convert an amount from a _baseAsset to a _quoteAsset\n function __calcConversionAmount(\n address _baseAsset,\n uint256 _baseAssetAmount,\n uint256 _baseAssetRate,\n address _quoteAsset,\n uint256 _quoteAssetRate\n ) private view returns (uint256 quoteAssetAmount_, bool isValid_) {\n RateAsset baseAssetRateAsset = getRateAssetForPrimitive(_baseAsset);\n RateAsset quoteAssetRateAsset = getRateAssetForPrimitive(_quoteAsset);\n uint256 baseAssetUnit = getUnitForPrimitive(_baseAsset);\n uint256 quoteAssetUnit = getUnitForPrimitive(_quoteAsset);\n\n // If rates are both in ETH or both in USD\n if (baseAssetRateAsset == quoteAssetRateAsset) {\n return (\n __calcConversionAmountSameRateAsset(\n _baseAssetAmount,\n baseAssetUnit,\n _baseAssetRate,\n quoteAssetUnit,\n _quoteAssetRate\n ),\n true\n );\n }\n\n int256 ethPerUsdRate = IChainlinkAggregator(ethUsdAggregator).latestAnswer();\n if (ethPerUsdRate <= 0) {\n return (0, false);\n }\n\n // If _baseAsset's rate is in ETH and _quoteAsset's rate is in USD\n if (baseAssetRateAsset == RateAsset.ETH) {\n return (\n __calcConversionAmountEthRateAssetToUsdRateAsset(\n _baseAssetAmount,\n baseAssetUnit,\n _baseAssetRate,\n quoteAssetUnit,\n _quoteAssetRate,\n uint256(ethPerUsdRate)\n ),\n true\n );\n }\n\n // If _baseAsset's rate is in USD and _quoteAsset's rate is in ETH\n return (\n __calcConversionAmountUsdRateAssetToEthRateAsset(\n _baseAssetAmount,\n baseAssetUnit,\n _baseAssetRate,\n quoteAssetUnit,\n _quoteAssetRate,\n uint256(ethPerUsdRate)\n ),\n true\n );\n }\n\n /// @dev Helper to convert amounts where the base asset has an ETH rate and the quote asset has a USD rate\n function __calcConversionAmountEthRateAssetToUsdRateAsset(\n uint256 _baseAssetAmount,\n uint256 _baseAssetUnit,\n uint256 _baseAssetRate,\n uint256 _quoteAssetUnit,\n uint256 _quoteAssetRate,\n uint256 _ethPerUsdRate\n ) private pure returns (uint256 quoteAssetAmount_) {\n // Only allows two consecutive multiplication operations to avoid potential overflow.\n // Intermediate step needed to resolve stack-too-deep error.\n uint256 intermediateStep = _baseAssetAmount.mul(_baseAssetRate).mul(_ethPerUsdRate).div(\n ETH_UNIT\n );\n\n return intermediateStep.mul(_quoteAssetUnit).div(_baseAssetUnit).div(_quoteAssetRate);\n }\n\n /// @dev Helper to convert amounts where base and quote assets both have ETH rates or both have USD rates\n function __calcConversionAmountSameRateAsset(\n uint256 _baseAssetAmount,\n uint256 _baseAssetUnit,\n uint256 _baseAssetRate,\n uint256 _quoteAssetUnit,\n uint256 _quoteAssetRate\n ) private pure returns (uint256 quoteAssetAmount_) {\n // Only allows two consecutive multiplication operations to avoid potential overflow\n return\n _baseAssetAmount.mul(_baseAssetRate).mul(_quoteAssetUnit).div(\n _baseAssetUnit.mul(_quoteAssetRate)\n );\n }\n\n /// @dev Helper to convert amounts where the base asset has a USD rate and the quote asset has an ETH rate\n function __calcConversionAmountUsdRateAssetToEthRateAsset(\n uint256 _baseAssetAmount,\n uint256 _baseAssetUnit,\n uint256 _baseAssetRate,\n uint256 _quoteAssetUnit,\n uint256 _quoteAssetRate,\n uint256 _ethPerUsdRate\n ) private pure returns (uint256 quoteAssetAmount_) {\n // Only allows two consecutive multiplication operations to avoid potential overflow\n // Intermediate step needed to resolve stack-too-deep error.\n uint256 intermediateStep = _baseAssetAmount.mul(_baseAssetRate).mul(_quoteAssetUnit).div(\n _ethPerUsdRate\n );\n\n return intermediateStep.mul(ETH_UNIT).div(_baseAssetUnit).div(_quoteAssetRate);\n }\n\n /// @dev Helper to get the latest rate for a given primitive\n function __getLatestRateData(address _primitive) private view returns (int256 rate_) {\n if (_primitive == WETH_TOKEN) {\n return int256(ETH_UNIT);\n }\n\n address aggregator = primitiveToAggregatorInfo[_primitive].aggregator;\n require(aggregator != address(0), \"__getLatestRateData: Primitive does not exist\");\n\n return IChainlinkAggregator(aggregator).latestAnswer();\n }\n\n /// @dev Helper to set the `ethUsdAggregator` value\n function __setEthUsdAggregator(address _nextEthUsdAggregator) private {\n address prevEthUsdAggregator = ethUsdAggregator;\n require(\n _nextEthUsdAggregator != prevEthUsdAggregator,\n \"__setEthUsdAggregator: Value already set\"\n );\n\n __validateAggregator(_nextEthUsdAggregator);\n\n ethUsdAggregator = _nextEthUsdAggregator;\n\n emit EthUsdAggregatorSet(prevEthUsdAggregator, _nextEthUsdAggregator);\n }\n\n /////////////////////////\n // PRIMITIVES REGISTRY //\n /////////////////////////\n\n /// @notice Adds a list of primitives with the given aggregator and rateAsset values\n /// @param _primitives The primitives to add\n /// @param _aggregators The ordered aggregators corresponding to the list of _primitives\n /// @param _rateAssets The ordered rate assets corresponding to the list of _primitives\n function addPrimitives(\n address[] calldata _primitives,\n address[] calldata _aggregators,\n RateAsset[] calldata _rateAssets\n ) external onlyDispatcherOwner {\n require(_primitives.length > 0, \"addPrimitives: _primitives cannot be empty\");\n\n __addPrimitives(_primitives, _aggregators, _rateAssets);\n }\n\n /// @notice Removes a list of primitives from the feed\n /// @param _primitives The primitives to remove\n function removePrimitives(address[] calldata _primitives) external onlyDispatcherOwner {\n require(_primitives.length > 0, \"removePrimitives: _primitives cannot be empty\");\n\n for (uint256 i; i < _primitives.length; i++) {\n require(\n primitiveToAggregatorInfo[_primitives[i]].aggregator != address(0),\n \"removePrimitives: Primitive not yet added\"\n );\n\n delete primitiveToAggregatorInfo[_primitives[i]];\n delete primitiveToUnit[_primitives[i]];\n\n emit PrimitiveRemoved(_primitives[i]);\n }\n }\n\n /// @notice Removes stale primitives from the feed\n /// @param _primitives The stale primitives to remove\n /// @dev Callable by anybody\n function removeStalePrimitives(address[] calldata _primitives) external {\n require(_primitives.length > 0, \"removeStalePrimitives: _primitives cannot be empty\");\n\n for (uint256 i; i < _primitives.length; i++) {\n address aggregatorAddress = primitiveToAggregatorInfo[_primitives[i]].aggregator;\n require(aggregatorAddress != address(0), \"removeStalePrimitives: Invalid primitive\");\n require(rateIsStale(aggregatorAddress), \"removeStalePrimitives: Rate is not stale\");\n\n delete primitiveToAggregatorInfo[_primitives[i]];\n delete primitiveToUnit[_primitives[i]];\n\n emit StalePrimitiveRemoved(_primitives[i]);\n }\n }\n\n /// @notice Sets the `staleRateThreshold` variable\n /// @param _nextStaleRateThreshold The next `staleRateThreshold` value\n function setStaleRateThreshold(uint256 _nextStaleRateThreshold) external onlyDispatcherOwner {\n uint256 prevStaleRateThreshold = staleRateThreshold;\n require(\n _nextStaleRateThreshold != prevStaleRateThreshold,\n \"__setStaleRateThreshold: Value already set\"\n );\n\n staleRateThreshold = _nextStaleRateThreshold;\n\n emit StaleRateThresholdSet(prevStaleRateThreshold, _nextStaleRateThreshold);\n }\n\n /// @notice Updates the aggregators for given primitives\n /// @param _primitives The primitives to update\n /// @param _aggregators The ordered aggregators corresponding to the list of _primitives\n function updatePrimitives(address[] calldata _primitives, address[] calldata _aggregators)\n external\n onlyDispatcherOwner\n {\n require(_primitives.length > 0, \"updatePrimitives: _primitives cannot be empty\");\n require(\n _primitives.length == _aggregators.length,\n \"updatePrimitives: Unequal _primitives and _aggregators array lengths\"\n );\n\n for (uint256 i; i < _primitives.length; i++) {\n address prevAggregator = primitiveToAggregatorInfo[_primitives[i]].aggregator;\n require(prevAggregator != address(0), \"updatePrimitives: Primitive not yet added\");\n require(_aggregators[i] != prevAggregator, \"updatePrimitives: Value already set\");\n\n __validateAggregator(_aggregators[i]);\n\n primitiveToAggregatorInfo[_primitives[i]].aggregator = _aggregators[i];\n\n emit PrimitiveUpdated(_primitives[i], prevAggregator, _aggregators[i]);\n }\n }\n\n /// @notice Checks whether the current rate is considered stale for the specified aggregator\n /// @param _aggregator The Chainlink aggregator of which to check staleness\n /// @return rateIsStale_ True if the rate is considered stale\n function rateIsStale(address _aggregator) public view returns (bool rateIsStale_) {\n return\n IChainlinkAggregator(_aggregator).latestTimestamp() <\n block.timestamp.sub(staleRateThreshold);\n }\n\n /// @dev Helper to add primitives to the feed\n function __addPrimitives(\n address[] memory _primitives,\n address[] memory _aggregators,\n RateAsset[] memory _rateAssets\n ) private {\n require(\n _primitives.length == _aggregators.length,\n \"__addPrimitives: Unequal _primitives and _aggregators array lengths\"\n );\n require(\n _primitives.length == _rateAssets.length,\n \"__addPrimitives: Unequal _primitives and _rateAssets array lengths\"\n );\n\n for (uint256 i = 0; i < _primitives.length; i++) {\n require(\n primitiveToAggregatorInfo[_primitives[i]].aggregator == address(0),\n \"__addPrimitives: Value already set\"\n );\n\n __validateAggregator(_aggregators[i]);\n\n primitiveToAggregatorInfo[_primitives[i]] = AggregatorInfo({\n aggregator: _aggregators[i],\n rateAsset: _rateAssets[i]\n });\n\n // Store the amount that makes up 1 unit given the asset's decimals\n uint256 unit = 10**uint256(ERC20(_primitives[i]).decimals());\n primitiveToUnit[_primitives[i]] = unit;\n\n emit PrimitiveAdded(_primitives[i], _aggregators[i], _rateAssets[i], unit);\n }\n }\n\n /// @dev Helper to validate an aggregator by checking its return values for the expected interface\n function __validateAggregator(address _aggregator) private view {\n require(_aggregator != address(0), \"__validateAggregator: Empty _aggregator\");\n\n require(\n IChainlinkAggregator(_aggregator).latestAnswer() > 0,\n \"__validateAggregator: No rate detected\"\n );\n require(!rateIsStale(_aggregator), \"__validateAggregator: Stale rate detected\");\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the aggregatorInfo variable value for a primitive\n /// @param _primitive The primitive asset for which to get the aggregatorInfo value\n /// @return aggregatorInfo_ The aggregatorInfo value\n function getAggregatorInfoForPrimitive(address _primitive)\n external\n view\n returns (AggregatorInfo memory aggregatorInfo_)\n {\n return primitiveToAggregatorInfo[_primitive];\n }\n\n /// @notice Gets the `ethUsdAggregator` variable value\n /// @return ethUsdAggregator_ The `ethUsdAggregator` variable value\n function getEthUsdAggregator() external view returns (address ethUsdAggregator_) {\n return ethUsdAggregator;\n }\n\n /// @notice Gets the `staleRateThreshold` variable value\n /// @return staleRateThreshold_ The `staleRateThreshold` variable value\n function getStaleRateThreshold() external view returns (uint256 staleRateThreshold_) {\n return staleRateThreshold;\n }\n\n /// @notice Gets the `WETH_TOKEN` variable value\n /// @return wethToken_ The `WETH_TOKEN` variable value\n function getWethToken() external view returns (address wethToken_) {\n return WETH_TOKEN;\n }\n\n /// @notice Gets the rateAsset variable value for a primitive\n /// @return rateAsset_ The rateAsset variable value\n /// @dev This isn't strictly necessary as WETH_TOKEN will be undefined and thus\n /// the RateAsset will be the 0-position of the enum (i.e. ETH), but it makes the\n /// behavior more explicit\n function getRateAssetForPrimitive(address _primitive)\n public\n view\n returns (RateAsset rateAsset_)\n {\n if (_primitive == WETH_TOKEN) {\n return RateAsset.ETH;\n }\n\n return primitiveToAggregatorInfo[_primitive].rateAsset;\n }\n\n /// @notice Gets the unit variable value for a primitive\n /// @return unit_ The unit variable value\n function getUnitForPrimitive(address _primitive) public view returns (uint256 unit_) {\n if (_primitive == WETH_TOKEN) {\n return ETH_UNIT;\n }\n\n return primitiveToUnit[_primitive];\n }\n}\n" }, "contracts/mocks/prices/CentralizedRateProvider.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"../../release/infrastructure/value-interpreter/IValueInterpreter.sol\";\nimport \"../../release/infrastructure/price-feeds/derivatives/IAggregatedDerivativePriceFeed.sol\";\nimport \"../../release/infrastructure/price-feeds/primitives/IPrimitivePriceFeed.sol\";\n\n/// @dev This contract acts as a centralized rate provider for mocks.\n/// Suited for a dev environment, it doesn't take into account gas costs.\ncontract CentralizedRateProvider is Ownable {\n using SafeMath for uint256;\n\n address private immutable WETH;\n uint256 private maxDeviationPerSender;\n\n // Addresses are not immutable to facilitate lazy load (they're are not accessible at the mock env).\n address private valueInterpreter;\n address private aggregateDerivativePriceFeed;\n address private primitivePriceFeed;\n\n constructor(address _weth, uint256 _maxDeviationPerSender) public {\n maxDeviationPerSender = _maxDeviationPerSender;\n WETH = _weth;\n }\n\n /// @dev Calculates the value of a _baseAsset relative to a _quoteAsset.\n /// Label to ValueInterprete's calcLiveAssetValue\n function calcLiveAssetValue(\n address _baseAsset,\n uint256 _amount,\n address _quoteAsset\n ) public returns (uint256 value_) {\n uint256 baseDecimalsRate = 10**uint256(ERC20(_baseAsset).decimals());\n uint256 quoteDecimalsRate = 10**uint256(ERC20(_quoteAsset).decimals());\n\n // 1. Check if quote asset is a primitive. If it is, use ValueInterpreter normally.\n if (IPrimitivePriceFeed(primitivePriceFeed).isSupportedAsset(_quoteAsset)) {\n (value_, ) = IValueInterpreter(valueInterpreter).calcLiveAssetValue(\n _baseAsset,\n _amount,\n _quoteAsset\n );\n return value_;\n }\n\n // 2. Otherwise, check if base asset is a primitive, and use inverse rate from Value Interpreter.\n if (IPrimitivePriceFeed(primitivePriceFeed).isSupportedAsset(_baseAsset)) {\n (uint256 inverseRate, ) = IValueInterpreter(valueInterpreter).calcLiveAssetValue(\n _quoteAsset,\n 10**uint256(ERC20(_quoteAsset).decimals()),\n _baseAsset\n );\n\n uint256 rate = uint256(baseDecimalsRate).mul(quoteDecimalsRate).div(inverseRate);\n\n value_ = _amount.mul(rate).div(baseDecimalsRate);\n return value_;\n }\n\n // 3. If both assets are derivatives, calculate the rate against ETH.\n (uint256 baseToWeth, ) = IValueInterpreter(valueInterpreter).calcLiveAssetValue(\n _baseAsset,\n baseDecimalsRate,\n WETH\n );\n\n (uint256 quoteToWeth, ) = IValueInterpreter(valueInterpreter).calcLiveAssetValue(\n _quoteAsset,\n quoteDecimalsRate,\n WETH\n );\n\n value_ = _amount.mul(baseToWeth).mul(quoteDecimalsRate).div(quoteToWeth).div(\n baseDecimalsRate\n );\n return value_;\n }\n\n /// @dev Calculates a randomized live value of an asset\n /// Aggregation of two randomization seeds: msg.sender, and by block.number.\n function calcLiveAssetValueRandomized(\n address _baseAsset,\n uint256 _amount,\n address _quoteAsset,\n uint256 _maxDeviationPerBlock\n ) external returns (uint256 value_) {\n uint256 liveAssetValue = calcLiveAssetValue(_baseAsset, _amount, _quoteAsset);\n\n // Range [liveAssetValue * (1 - _blockNumberDeviation), liveAssetValue * (1 + _blockNumberDeviation)]\n uint256 senderRandomizedValue_ = __calcValueRandomizedByAddress(\n liveAssetValue,\n msg.sender,\n maxDeviationPerSender\n );\n\n // Range [liveAssetValue * (1 - _maxDeviationPerBlock - maxDeviationPerSender), liveAssetValue * (1 + _maxDeviationPerBlock + maxDeviationPerSender)]\n value_ = __calcValueRandomizedByUint(\n senderRandomizedValue_,\n block.number,\n _maxDeviationPerBlock\n );\n\n return value_;\n }\n\n /// @dev Calculates the live value of an asset including a grade of pseudo randomization, using msg.sender as the source of randomness\n function calcLiveAssetValueRandomizedByBlockNumber(\n address _baseAsset,\n uint256 _amount,\n address _quoteAsset,\n uint256 _maxDeviationPerBlock\n ) external returns (uint256 value_) {\n uint256 liveAssetValue = calcLiveAssetValue(_baseAsset, _amount, _quoteAsset);\n\n value_ = __calcValueRandomizedByUint(liveAssetValue, block.number, _maxDeviationPerBlock);\n\n return value_;\n }\n\n /// @dev Calculates the live value of an asset including a grade of pseudo-randomization, using `block.number` as the source of randomness\n function calcLiveAssetValueRandomizedBySender(\n address _baseAsset,\n uint256 _amount,\n address _quoteAsset\n ) external returns (uint256 value_) {\n uint256 liveAssetValue = calcLiveAssetValue(_baseAsset, _amount, _quoteAsset);\n\n value_ = __calcValueRandomizedByAddress(liveAssetValue, msg.sender, maxDeviationPerSender);\n\n return value_;\n }\n\n function setMaxDeviationPerSender(uint256 _maxDeviationPerSender) external onlyOwner {\n maxDeviationPerSender = _maxDeviationPerSender;\n }\n\n /// @dev Connector from release environment, inject price variables into the provider.\n function setReleasePriceAddresses(\n address _valueInterpreter,\n address _aggregateDerivativePriceFeed,\n address _primitivePriceFeed\n ) external onlyOwner {\n valueInterpreter = _valueInterpreter;\n aggregateDerivativePriceFeed = _aggregateDerivativePriceFeed;\n primitivePriceFeed = _primitivePriceFeed;\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Calculates a a pseudo-randomized value as a seed an address\n function __calcValueRandomizedByAddress(\n uint256 _meanValue,\n address _seed,\n uint256 _maxDeviation\n ) private pure returns (uint256 value_) {\n // Value between [0, 100]\n uint256 senderRandomFactor = uint256(uint8(_seed))\n .mul(100)\n .div(256)\n .mul(_maxDeviation)\n .div(100);\n\n value_ = __calcDeviatedValue(_meanValue, senderRandomFactor, _maxDeviation);\n\n return value_;\n }\n\n /// @dev Calculates a a pseudo-randomized value as a seed an uint256\n function __calcValueRandomizedByUint(\n uint256 _meanValue,\n uint256 _seed,\n uint256 _maxDeviation\n ) private pure returns (uint256 value_) {\n // Depending on the _seed number, it will be one of {20, 40, 60, 80, 100}\n uint256 randomFactor = (_seed.mod(2).mul(20))\n .add((_seed.mod(3).mul(40)))\n .mul(_maxDeviation)\n .div(100);\n\n value_ = __calcDeviatedValue(_meanValue, randomFactor, _maxDeviation);\n\n return value_;\n }\n\n /// @dev Given a mean value and a max deviation, returns a value in the spectrum between 0 (_meanValue - maxDeviation) and 100 (_mean + maxDeviation)\n /// TODO: Refactor to use 18 decimal precision\n function __calcDeviatedValue(\n uint256 _meanValue,\n uint256 _offset,\n uint256 _maxDeviation\n ) private pure returns (uint256 value_) {\n return\n _meanValue.add((_meanValue.mul((uint256(2)).mul(_offset)).div(uint256(100)))).sub(\n _meanValue.mul(_maxDeviation).div(uint256(100))\n );\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n function getMaxDeviationPerSender() public view returns (uint256 maxDeviationPerSender_) {\n return maxDeviationPerSender;\n }\n\n function getValueInterpreter() public view returns (address valueInterpreter_) {\n return valueInterpreter;\n }\n}\n" }, "@openzeppelin/contracts/access/Ownable.sol": { "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\nimport \"../GSN/Context.sol\";\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n /**\n * @dev Initializes the contract setting the deployer as the initial owner.\n */\n constructor () internal {\n address msgSender = _msgSender();\n _owner = msgSender;\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n /**\n * @dev Returns the address of the current owner.\n */\n function owner() public view returns (address) {\n return _owner;\n }\n\n /**\n * @dev Throws if called by any account other than the owner.\n */\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n _;\n }\n\n /**\n * @dev Leaves the contract without owner. It will not be possible to call\n * `onlyOwner` functions anymore. Can only be called by the current owner.\n *\n * NOTE: Renouncing ownership will leave the contract without an owner,\n * thereby removing any functionality that is only available to the owner.\n */\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n _owner = address(0);\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n * Can only be called by the current owner.\n */\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n emit OwnershipTransferred(_owner, newOwner);\n _owner = newOwner;\n }\n}\n" }, "contracts/mocks/integratees/MockUniswapV2Integratee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../prices/CentralizedRateProvider.sol\";\nimport \"./utils/SimpleMockIntegrateeBase.sol\";\n\n/// @dev Mocks the integration with `UniswapV2Router02` \n/// Additionally mocks the integration with `UniswapV2Factory` \ncontract MockUniswapV2Integratee is SwapperBase, Ownable {\n using SafeMath for uint256;\n mapping(address => mapping(address => address)) private assetToAssetToPair;\n\n address private immutable CENTRALIZED_RATE_PROVIDER;\n uint256 private constant PRECISION = 18;\n\n // Set in %, defines the MAX deviation per block from the mean rate\n uint256 private blockNumberDeviation;\n\n constructor(\n address[] memory _listOfToken0,\n address[] memory _listOfToken1,\n address[] memory _listOfPair,\n address _centralizedRateProvider,\n uint256 _blockNumberDeviation\n ) public {\n addPair(_listOfToken0, _listOfToken1, _listOfPair);\n CENTRALIZED_RATE_PROVIDER = _centralizedRateProvider;\n blockNumberDeviation = _blockNumberDeviation;\n }\n\n /// @dev Adds the maximum possible value from {_amountADesired _amountBDesired}\n /// Makes use of the value interpreter to perform those calculations\n function addLiquidity(\n address _tokenA,\n address _tokenB,\n uint256 _amountADesired,\n uint256 _amountBDesired,\n uint256,\n uint256,\n address,\n uint256\n )\n external\n returns (\n uint256,\n uint256,\n uint256\n )\n {\n __addLiquidity(_tokenA, _tokenB, _amountADesired, _amountBDesired);\n }\n\n /// @dev Removes the specified amount of liquidity\n /// Returns 50% of the incoming liquidity value on each token.\n function removeLiquidity(\n address _tokenA,\n address _tokenB,\n uint256 _liquidity,\n uint256,\n uint256,\n address,\n uint256\n ) public returns (uint256, uint256) {\n __removeLiquidity(_tokenA, _tokenB, _liquidity);\n }\n\n function swapExactTokensForTokens(\n uint256 amountIn,\n uint256,\n address[] calldata path,\n address,\n uint256\n ) external returns (uint256[] memory) {\n uint256 amountOut = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValueRandomized(path[0], amountIn, path[1], blockNumberDeviation);\n\n __swapAssets(msg.sender, path[0], amountIn, path[path.length - 1], amountOut);\n }\n\n /// @dev We don't calculate any intermediate values here because they aren't actually used\n /// Returns the randomized by sender value of the edge path assets\n function getAmountsOut(uint256 _amountIn, address[] calldata _path)\n external\n returns (uint256[] memory amounts_)\n {\n require(_path.length >= 2, \"getAmountsOut: path must be >= 2\");\n\n address assetIn = _path[0];\n address assetOut = _path[_path.length - 1];\n\n uint256 amountOut = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValueRandomizedBySender(assetIn, _amountIn, assetOut);\n\n amounts_ = new uint256[](_path.length);\n amounts_[0] = _amountIn;\n amounts_[_path.length - 1] = amountOut;\n\n return amounts_;\n }\n\n function addPair(\n address[] memory _listOfToken0,\n address[] memory _listOfToken1,\n address[] memory _listOfPair\n ) public onlyOwner {\n require(\n _listOfPair.length == _listOfToken0.length,\n \"constructor: _listOfPair and _listOfToken0 have an unequal length\"\n );\n require(\n _listOfPair.length == _listOfToken1.length,\n \"constructor: _listOfPair and _listOfToken1 have an unequal length\"\n );\n for (uint256 i; i < _listOfPair.length; i++) {\n address token0 = _listOfToken0[i];\n address token1 = _listOfToken1[i];\n address pair = _listOfPair[i];\n assetToAssetToPair[token0][token1] = pair;\n assetToAssetToPair[token1][token0] = pair;\n }\n }\n\n function setBlockNumberDeviation(uint256 _deviationPct) external onlyOwner {\n blockNumberDeviation = _deviationPct;\n }\n\n // PRIVATE FUNCTIONS\n\n /// Avoids stack-too-deep error.\n function __addLiquidity(\n address _tokenA,\n address _tokenB,\n uint256 _amountADesired,\n uint256 _amountBDesired\n ) private {\n address pair = getPair(_tokenA, _tokenB);\n\n uint256 amountA;\n uint256 amountB;\n\n uint256 amountBFromA = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValue(_tokenA, _amountADesired, _tokenB);\n uint256 amountAFromB = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValue(_tokenB, _amountBDesired, _tokenA);\n\n if (amountBFromA >= _amountBDesired) {\n amountA = amountAFromB;\n amountB = _amountBDesired;\n } else {\n amountA = _amountADesired;\n amountB = amountBFromA;\n }\n\n uint256 tokenPerLPToken = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValue(pair, 10**uint256(PRECISION), _tokenA);\n\n // Calculate the inverse rate to know the amount of LPToken to return from a unit of token\n uint256 inverseRate = uint256(10**PRECISION).mul(10**PRECISION).div(tokenPerLPToken);\n\n // Total liquidity can be calculated as 2x liquidity from amount A\n uint256 totalLiquidity = uint256(2).mul(\n amountA.mul(inverseRate).div(uint256(10**PRECISION))\n );\n\n require(\n ERC20(pair).balanceOf(address(this)) >= totalLiquidity,\n \"__addLiquidity: Integratee doesn't have enough pair balance to cover the expected amount\"\n );\n\n address[] memory assetsToIntegratee = new address[](2);\n uint256[] memory assetsToIntegrateeAmounts = new uint256[](2);\n address[] memory assetsFromIntegratee = new address[](1);\n uint256[] memory assetsFromIntegrateeAmounts = new uint256[](1);\n\n assetsToIntegratee[0] = _tokenA;\n assetsToIntegrateeAmounts[0] = amountA;\n assetsToIntegratee[1] = _tokenB;\n assetsToIntegrateeAmounts[1] = amountB;\n assetsFromIntegratee[0] = pair;\n assetsFromIntegrateeAmounts[0] = totalLiquidity;\n\n __swap(\n msg.sender,\n assetsToIntegratee,\n assetsToIntegrateeAmounts,\n assetsFromIntegratee,\n assetsFromIntegrateeAmounts\n );\n }\n\n /// Avoids stack-too-deep error.\n function __removeLiquidity(\n address _tokenA,\n address _tokenB,\n uint256 _liquidity\n ) private {\n address pair = assetToAssetToPair[_tokenA][_tokenB];\n require(pair != address(0), \"__removeLiquidity: this pair doesn't exist\");\n\n uint256 amountA = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValue(pair, _liquidity, _tokenA)\n .div(uint256(2));\n\n uint256 amountB = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValue(pair, _liquidity, _tokenB)\n .div(uint256(2));\n\n address[] memory assetsToIntegratee = new address[](1);\n uint256[] memory assetsToIntegrateeAmounts = new uint256[](1);\n address[] memory assetsFromIntegratee = new address[](2);\n uint256[] memory assetsFromIntegrateeAmounts = new uint256[](2);\n\n assetsToIntegratee[0] = pair;\n assetsToIntegrateeAmounts[0] = _liquidity;\n assetsFromIntegratee[0] = _tokenA;\n assetsFromIntegrateeAmounts[0] = amountA;\n assetsFromIntegratee[1] = _tokenB;\n assetsFromIntegrateeAmounts[1] = amountB;\n\n require(\n ERC20(_tokenA).balanceOf(address(this)) >= amountA,\n \"__removeLiquidity: Integratee doesn't have enough tokenA balance to cover the expected amount\"\n );\n require(\n ERC20(_tokenB).balanceOf(address(this)) >= amountA,\n \"__removeLiquidity: Integratee doesn't have enough tokenB balance to cover the expected amount\"\n );\n\n __swap(\n msg.sender,\n assetsToIntegratee,\n assetsToIntegrateeAmounts,\n assetsFromIntegratee,\n assetsFromIntegrateeAmounts\n );\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @dev By default set to address(0). It is read by UniswapV2PoolTokenValueCalculator: __calcPoolTokenValue\n function feeTo() external pure returns (address) {\n return address(0);\n }\n\n function getCentralizedRateProvider() public view returns (address) {\n return CENTRALIZED_RATE_PROVIDER;\n }\n\n function getBlockNumberDeviation() public view returns (uint256) {\n return blockNumberDeviation;\n }\n\n function getPrecision() public pure returns (uint256) {\n return PRECISION;\n }\n\n function getPair(address _token0, address _token1) public view returns (address) {\n return assetToAssetToPair[_token0][_token1];\n }\n}\n" }, "contracts/mocks/integratees/utils/SimpleMockIntegrateeBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"./MockIntegrateeBase.sol\";\n\nabstract contract SimpleMockIntegrateeBase is MockIntegrateeBase {\n constructor(\n address[] memory _defaultRateAssets,\n address[] memory _specialAssets,\n uint8[] memory _specialAssetDecimals,\n uint256 _ratePrecision\n )\n public\n MockIntegrateeBase(\n _defaultRateAssets,\n _specialAssets,\n _specialAssetDecimals,\n _ratePrecision\n )\n {}\n\n function __getRateAndSwapAssets(\n address payable _trader,\n address _srcToken,\n uint256 _srcAmount,\n address _destToken\n ) internal returns (uint256 destAmount_) {\n uint256 actualRate = __getRate(_srcToken, _destToken);\n __swapAssets(_trader, _srcToken, _srcAmount, _destToken, actualRate);\n return actualRate;\n }\n}\n" }, "contracts/mocks/integratees/utils/MockIntegrateeBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../utils/NormalizedRateProviderBase.sol\";\nimport \"../../utils/SwapperBase.sol\";\n\nabstract contract MockIntegrateeBase is NormalizedRateProviderBase, SwapperBase {\n constructor(\n address[] memory _defaultRateAssets,\n address[] memory _specialAssets,\n uint8[] memory _specialAssetDecimals,\n uint256 _ratePrecision\n )\n public\n NormalizedRateProviderBase(\n _defaultRateAssets,\n _specialAssets,\n _specialAssetDecimals,\n _ratePrecision\n )\n {}\n\n function __getRate(address _baseAsset, address _quoteAsset)\n internal\n view\n override\n returns (uint256)\n {\n // 1. Return constant if base asset is quote asset\n if (_baseAsset == _quoteAsset) {\n return 10**RATE_PRECISION;\n }\n\n // 2. Check for a direct rate\n uint256 directRate = assetToAssetRate[_baseAsset][_quoteAsset];\n if (directRate > 0) {\n return directRate;\n }\n\n // 3. Check for inverse direct rate\n uint256 iDirectRate = assetToAssetRate[_quoteAsset][_baseAsset];\n if (iDirectRate > 0) {\n return 10**(RATE_PRECISION.mul(2)).div(iDirectRate);\n }\n\n // 4. Else return 1\n return 10**RATE_PRECISION;\n }\n}\n" }, "contracts/mocks/utils/NormalizedRateProviderBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"./RateProviderBase.sol\";\n\nabstract contract NormalizedRateProviderBase is RateProviderBase {\n using SafeMath for uint256;\n\n uint256 public immutable RATE_PRECISION;\n\n constructor(\n address[] memory _defaultRateAssets,\n address[] memory _specialAssets,\n uint8[] memory _specialAssetDecimals,\n uint256 _ratePrecision\n ) public RateProviderBase(_specialAssets, _specialAssetDecimals) {\n RATE_PRECISION = _ratePrecision;\n\n for (uint256 i = 0; i < _defaultRateAssets.length; i++) {\n for (uint256 j = i + 1; j < _defaultRateAssets.length; j++) {\n assetToAssetRate[_defaultRateAssets[i]][_defaultRateAssets[j]] =\n 10**_ratePrecision;\n assetToAssetRate[_defaultRateAssets[j]][_defaultRateAssets[i]] =\n 10**_ratePrecision;\n }\n }\n }\n\n // TODO: move to main contracts' utils for use with prices\n function __calcDenormalizedQuoteAssetAmount(\n uint256 _baseAssetDecimals,\n uint256 _baseAssetAmount,\n uint256 _quoteAssetDecimals,\n uint256 _rate\n ) internal view returns (uint256) {\n return\n _rate.mul(_baseAssetAmount).mul(10**_quoteAssetDecimals).div(\n 10**(RATE_PRECISION.add(_baseAssetDecimals))\n );\n }\n}\n" }, "contracts/mocks/utils/SwapperBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"./EthConstantMixin.sol\";\n\nabstract contract SwapperBase is EthConstantMixin {\n receive() external payable {}\n\n function __swapAssets(\n address payable _trader,\n address _srcToken,\n uint256 _srcAmount,\n address _destToken,\n uint256 _actualRate\n ) internal returns (uint256 destAmount_) {\n address[] memory assetsToIntegratee = new address[](1);\n assetsToIntegratee[0] = _srcToken;\n uint256[] memory assetsToIntegrateeAmounts = new uint256[](1);\n assetsToIntegrateeAmounts[0] = _srcAmount;\n\n address[] memory assetsFromIntegratee = new address[](1);\n assetsFromIntegratee[0] = _destToken;\n uint256[] memory assetsFromIntegrateeAmounts = new uint256[](1);\n assetsFromIntegrateeAmounts[0] = _actualRate;\n __swap(\n _trader,\n assetsToIntegratee,\n assetsToIntegrateeAmounts,\n assetsFromIntegratee,\n assetsFromIntegrateeAmounts\n );\n\n return assetsFromIntegrateeAmounts[0];\n }\n\n function __swap(\n address payable _trader,\n address[] memory _assetsToIntegratee,\n uint256[] memory _assetsToIntegrateeAmounts,\n address[] memory _assetsFromIntegratee,\n uint256[] memory _assetsFromIntegrateeAmounts\n ) internal {\n // Take custody of incoming assets\n for (uint256 i = 0; i < _assetsToIntegratee.length; i++) {\n address asset = _assetsToIntegratee[i];\n uint256 amount = _assetsToIntegrateeAmounts[i];\n require(asset != address(0), \"__swap: empty value in _assetsToIntegratee\");\n require(amount > 0, \"__swap: empty value in _assetsToIntegrateeAmounts\");\n // Incoming ETH amounts can be ignored\n if (asset == ETH_ADDRESS) {\n continue;\n }\n ERC20(asset).transferFrom(_trader, address(this), amount);\n }\n\n // Distribute outgoing assets\n for (uint256 i = 0; i < _assetsFromIntegratee.length; i++) {\n address asset = _assetsFromIntegratee[i];\n uint256 amount = _assetsFromIntegrateeAmounts[i];\n require(asset != address(0), \"__swap: empty value in _assetsFromIntegratee\");\n require(amount > 0, \"__swap: empty value in _assetsFromIntegrateeAmounts\");\n if (asset == ETH_ADDRESS) {\n _trader.transfer(amount);\n } else {\n ERC20(asset).transfer(_trader, amount);\n }\n }\n }\n}\n" }, "contracts/mocks/utils/RateProviderBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"./EthConstantMixin.sol\";\n\nabstract contract RateProviderBase is EthConstantMixin {\n mapping(address => mapping(address => uint256)) public assetToAssetRate;\n\n // Handles non-ERC20 compliant assets like ETH and USD\n mapping(address => uint8) public specialAssetToDecimals;\n\n constructor(address[] memory _specialAssets, uint8[] memory _specialAssetDecimals) public {\n require(\n _specialAssets.length == _specialAssetDecimals.length,\n \"constructor: _specialAssets and _specialAssetDecimals are uneven lengths\"\n );\n for (uint256 i = 0; i < _specialAssets.length; i++) {\n specialAssetToDecimals[_specialAssets[i]] = _specialAssetDecimals[i];\n }\n\n specialAssetToDecimals[ETH_ADDRESS] = 18;\n }\n\n function __getDecimalsForAsset(address _asset) internal view returns (uint256) {\n uint256 decimals = specialAssetToDecimals[_asset];\n if (decimals == 0) {\n decimals = uint256(ERC20(_asset).decimals());\n }\n\n return decimals;\n }\n\n function __getRate(address _baseAsset, address _quoteAsset)\n internal\n view\n virtual\n returns (uint256)\n {\n return assetToAssetRate[_baseAsset][_quoteAsset];\n }\n\n function setRates(\n address[] calldata _baseAssets,\n address[] calldata _quoteAssets,\n uint256[] calldata _rates\n ) external {\n require(\n _baseAssets.length == _quoteAssets.length,\n \"setRates: _baseAssets and _quoteAssets are uneven lengths\"\n );\n require(\n _baseAssets.length == _rates.length,\n \"setRates: _baseAssets and _rates are uneven lengths\"\n );\n for (uint256 i = 0; i < _baseAssets.length; i++) {\n assetToAssetRate[_baseAssets[i]][_quoteAssets[i]] = _rates[i];\n }\n }\n}\n" }, "contracts/mocks/utils/EthConstantMixin.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nabstract contract EthConstantMixin {\n address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;\n}\n" }, "contracts/mocks/integratees/MockParaSwapIntegratee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../release/interfaces/IParaSwapAugustusSwapper.sol\";\nimport \"../prices/CentralizedRateProvider.sol\";\nimport \"../utils/SwapperBase.sol\";\n\ncontract MockParaSwapIntegratee is SwapperBase {\n using SafeMath for uint256;\n\n address private immutable MOCK_CENTRALIZED_RATE_PROVIDER;\n\n // Deviation set in % defines the MAX deviation per block from the mean rate\n uint256 private blockNumberDeviation;\n\n constructor(address _mockCentralizedRateProvider, uint256 _blockNumberDeviation) public {\n MOCK_CENTRALIZED_RATE_PROVIDER = _mockCentralizedRateProvider;\n blockNumberDeviation = _blockNumberDeviation;\n }\n\n /// @dev Must be `public` to avoid error\n function multiSwap(\n address _fromToken,\n address _toToken,\n uint256 _fromAmount,\n uint256, // toAmount (min received amount)\n uint256, // expectedAmount\n IParaSwapAugustusSwapper.Path[] memory _paths,\n uint256, // mintPrice\n address, // beneficiary\n uint256, // donationPercentage\n string memory // referrer\n ) public payable returns (uint256) {\n return __multiSwap(_fromToken, _toToken, _fromAmount, _paths);\n }\n\n /// @dev Helper to parse the total amount of network fees (in ETH) for the multiSwap() call\n function __calcTotalNetworkFees(IParaSwapAugustusSwapper.Path[] memory _paths)\n private\n pure\n returns (uint256 totalNetworkFees_)\n {\n for (uint256 i; i < _paths.length; i++) {\n totalNetworkFees_ = totalNetworkFees_.add(_paths[i].totalNetworkFee);\n }\n\n return totalNetworkFees_;\n }\n\n /// @dev Helper to avoid the stack-too-deep error\n function __multiSwap(\n address _fromToken,\n address _toToken,\n uint256 _fromAmount,\n IParaSwapAugustusSwapper.Path[] memory _paths\n ) private returns (uint256) {\n address[] memory assetsFromIntegratee = new address[](1);\n assetsFromIntegratee[0] = _toToken;\n\n uint256[] memory assetsFromIntegrateeAmounts = new uint256[](1);\n assetsFromIntegrateeAmounts[0] = CentralizedRateProvider(MOCK_CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValueRandomized(_fromToken, _fromAmount, _toToken, blockNumberDeviation);\n\n uint256 totalNetworkFees = __calcTotalNetworkFees(_paths);\n address[] memory assetsToIntegratee;\n uint256[] memory assetsToIntegrateeAmounts;\n if (totalNetworkFees > 0) {\n assetsToIntegratee = new address[](2);\n assetsToIntegratee[1] = ETH_ADDRESS;\n\n assetsToIntegrateeAmounts = new uint256[](2);\n assetsToIntegrateeAmounts[1] = totalNetworkFees;\n } else {\n assetsToIntegratee = new address[](1);\n assetsToIntegrateeAmounts = new uint256[](1);\n }\n assetsToIntegratee[0] = _fromToken;\n assetsToIntegrateeAmounts[0] = _fromAmount;\n\n __swap(\n msg.sender,\n assetsToIntegratee,\n assetsToIntegrateeAmounts,\n assetsFromIntegratee,\n assetsFromIntegrateeAmounts\n );\n\n return assetsFromIntegrateeAmounts[0];\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n function getBlockNumberDeviation() external view returns (uint256 blockNumberDeviation_) {\n return blockNumberDeviation;\n }\n\n function getCentralizedRateProvider()\n external\n view\n returns (address centralizedRateProvider_)\n {\n return MOCK_CENTRALIZED_RATE_PROVIDER;\n }\n}\n" }, "contracts/release/interfaces/IParaSwapAugustusSwapper.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\n/// @title ParaSwap IAugustusSwapper interface\ninterface IParaSwapAugustusSwapper {\n struct Route {\n address payable exchange;\n address targetExchange;\n uint256 percent;\n bytes payload;\n uint256 networkFee;\n }\n\n struct Path {\n address to;\n uint256 totalNetworkFee;\n Route[] routes;\n }\n\n function multiSwap(\n address,\n address,\n uint256,\n uint256,\n uint256,\n Path[] calldata,\n uint256,\n address payable,\n uint256,\n string calldata\n ) external payable returns (uint256);\n}\n" }, "contracts/release/extensions/integration-manager/integrations/adapters/ParaSwapAdapter.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../../../interfaces/IParaSwapAugustusSwapper.sol\";\nimport \"../../../../interfaces/IWETH.sol\";\nimport \"../utils/AdapterBase.sol\";\n\n/// @title ParaSwapAdapter Contract\n/// @author Enzyme Council \n/// @notice Adapter for interacting with ParaSwap\ncontract ParaSwapAdapter is AdapterBase {\n using SafeMath for uint256;\n\n string private constant REFERRER = \"enzyme\";\n\n address private immutable EXCHANGE;\n address private immutable TOKEN_TRANSFER_PROXY;\n address private immutable WETH_TOKEN;\n\n constructor(\n address _integrationManager,\n address _exchange,\n address _tokenTransferProxy,\n address _wethToken\n ) public AdapterBase(_integrationManager) {\n EXCHANGE = _exchange;\n TOKEN_TRANSFER_PROXY = _tokenTransferProxy;\n WETH_TOKEN = _wethToken;\n }\n\n /// @dev Needed to receive ETH refund from sent network fees\n receive() external payable {}\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Provides a constant string identifier for an adapter\n /// @return identifier_ An identifier string\n function identifier() external pure override returns (string memory identifier_) {\n return \"PARASWAP\";\n }\n\n /// @notice Parses the expected assets to receive from a call on integration\n /// @param _selector The function selector for the callOnIntegration\n /// @param _encodedCallArgs The encoded parameters for the callOnIntegration\n /// @return spendAssetsHandleType_ A type that dictates how to handle granting\n /// the adapter access to spend assets (`None` by default)\n /// @return spendAssets_ The assets to spend in the call\n /// @return spendAssetAmounts_ The max asset amounts to spend in the call\n /// @return incomingAssets_ The assets to receive in the call\n /// @return minIncomingAssetAmounts_ The min asset amounts to receive in the call\n function parseAssetsForMethod(bytes4 _selector, bytes calldata _encodedCallArgs)\n external\n view\n override\n returns (\n IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,\n address[] memory spendAssets_,\n uint256[] memory spendAssetAmounts_,\n address[] memory incomingAssets_,\n uint256[] memory minIncomingAssetAmounts_\n )\n {\n require(_selector == TAKE_ORDER_SELECTOR, \"parseAssetsForMethod: _selector invalid\");\n\n (\n address incomingAsset,\n uint256 minIncomingAssetAmount,\n ,\n address outgoingAsset,\n uint256 outgoingAssetAmount,\n IParaSwapAugustusSwapper.Path[] memory paths\n ) = __decodeCallArgs(_encodedCallArgs);\n\n // Format incoming assets\n incomingAssets_ = new address[](1);\n incomingAssets_[0] = incomingAsset;\n minIncomingAssetAmounts_ = new uint256[](1);\n minIncomingAssetAmounts_[0] = minIncomingAssetAmount;\n\n // Format outgoing assets depending on if there are network fees\n uint256 totalNetworkFees = __calcTotalNetworkFees(paths);\n if (totalNetworkFees > 0) {\n // We are not performing special logic if the incomingAsset is the fee asset\n if (outgoingAsset == WETH_TOKEN) {\n spendAssets_ = new address[](1);\n spendAssets_[0] = outgoingAsset;\n\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = outgoingAssetAmount.add(totalNetworkFees);\n } else {\n spendAssets_ = new address[](2);\n spendAssets_[0] = outgoingAsset;\n spendAssets_[1] = WETH_TOKEN;\n\n spendAssetAmounts_ = new uint256[](2);\n spendAssetAmounts_[0] = outgoingAssetAmount;\n spendAssetAmounts_[1] = totalNetworkFees;\n }\n } else {\n spendAssets_ = new address[](1);\n spendAssets_[0] = outgoingAsset;\n\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = outgoingAssetAmount;\n }\n\n return (\n IIntegrationManager.SpendAssetsHandleType.Transfer,\n spendAssets_,\n spendAssetAmounts_,\n incomingAssets_,\n minIncomingAssetAmounts_\n );\n }\n\n /// @notice Trades assets on ParaSwap\n /// @param _vaultProxy The VaultProxy of the calling fund\n /// @param _encodedCallArgs Encoded order parameters\n /// @param _encodedAssetTransferArgs Encoded args for expected assets to spend and receive\n function takeOrder(\n address _vaultProxy,\n bytes calldata _encodedCallArgs,\n bytes calldata _encodedAssetTransferArgs\n )\n external\n onlyIntegrationManager\n fundAssetsTransferHandler(_vaultProxy, _encodedAssetTransferArgs)\n {\n __takeOrder(_vaultProxy, _encodedCallArgs);\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Helper to parse the total amount of network fees (in ETH) for the multiSwap() call\n function __calcTotalNetworkFees(IParaSwapAugustusSwapper.Path[] memory _paths)\n private\n pure\n returns (uint256 totalNetworkFees_)\n {\n for (uint256 i; i < _paths.length; i++) {\n totalNetworkFees_ = totalNetworkFees_.add(_paths[i].totalNetworkFee);\n }\n\n return totalNetworkFees_;\n }\n\n /// @dev Helper to decode the encoded callOnIntegration call arguments\n function __decodeCallArgs(bytes memory _encodedCallArgs)\n private\n pure\n returns (\n address incomingAsset_,\n uint256 minIncomingAssetAmount_,\n uint256 expectedIncomingAssetAmount_, // Passed as a courtesy to ParaSwap for analytics\n address outgoingAsset_,\n uint256 outgoingAssetAmount_,\n IParaSwapAugustusSwapper.Path[] memory paths_\n )\n {\n return\n abi.decode(\n _encodedCallArgs,\n (address, uint256, uint256, address, uint256, IParaSwapAugustusSwapper.Path[])\n );\n }\n\n /// @dev Helper to encode the call to ParaSwap multiSwap() as low-level calldata.\n /// Avoids the stack-too-deep error.\n function __encodeMultiSwapCallData(\n address _vaultProxy,\n address _incomingAsset,\n uint256 _minIncomingAssetAmount,\n uint256 _expectedIncomingAssetAmount, // Passed as a courtesy to ParaSwap for analytics\n address _outgoingAsset,\n uint256 _outgoingAssetAmount,\n IParaSwapAugustusSwapper.Path[] memory _paths\n ) private pure returns (bytes memory multiSwapCallData) {\n return\n abi.encodeWithSelector(\n IParaSwapAugustusSwapper.multiSwap.selector,\n _outgoingAsset, // fromToken\n _incomingAsset, // toToken\n _outgoingAssetAmount, // fromAmount\n _minIncomingAssetAmount, // toAmount\n _expectedIncomingAssetAmount, // expectedAmount\n _paths, // path\n 0, // mintPrice\n payable(_vaultProxy), // beneficiary\n 0, // donationPercentage\n REFERRER // referrer\n );\n }\n\n /// @dev Helper to execute ParaSwapAugustusSwapper.multiSwap() via a low-level call.\n /// Avoids the stack-too-deep error.\n function __executeMultiSwap(bytes memory _multiSwapCallData, uint256 _totalNetworkFees)\n private\n {\n (bool success, bytes memory returnData) = EXCHANGE.call{value: _totalNetworkFees}(\n _multiSwapCallData\n );\n require(success, string(returnData));\n }\n\n /// @dev Helper for the inner takeOrder() logic.\n /// Avoids the stack-too-deep error.\n function __takeOrder(address _vaultProxy, bytes memory _encodedCallArgs) private {\n (\n address incomingAsset,\n uint256 minIncomingAssetAmount,\n uint256 expectedIncomingAssetAmount,\n address outgoingAsset,\n uint256 outgoingAssetAmount,\n IParaSwapAugustusSwapper.Path[] memory paths\n ) = __decodeCallArgs(_encodedCallArgs);\n\n __approveMaxAsNeeded(outgoingAsset, TOKEN_TRANSFER_PROXY, outgoingAssetAmount);\n\n // If there are network fees, unwrap enough WETH to cover the fees\n uint256 totalNetworkFees = __calcTotalNetworkFees(paths);\n if (totalNetworkFees > 0) {\n __unwrapWeth(totalNetworkFees);\n }\n\n // Get the callData for the low-level multiSwap() call\n bytes memory multiSwapCallData = __encodeMultiSwapCallData(\n _vaultProxy,\n incomingAsset,\n minIncomingAssetAmount,\n expectedIncomingAssetAmount,\n outgoingAsset,\n outgoingAssetAmount,\n paths\n );\n\n // Execute the trade on ParaSwap\n __executeMultiSwap(multiSwapCallData, totalNetworkFees);\n\n // If fees were paid and ETH remains in the contract, wrap it as WETH so it can be returned\n if (totalNetworkFees > 0) {\n __wrapEth();\n }\n }\n\n /// @dev Helper to unwrap specified amount of WETH into ETH.\n /// Avoids the stack-too-deep error.\n function __unwrapWeth(uint256 _amount) private {\n IWETH(payable(WETH_TOKEN)).withdraw(_amount);\n }\n\n /// @dev Helper to wrap all ETH in contract as WETH.\n /// Avoids the stack-too-deep error.\n function __wrapEth() private {\n uint256 ethBalance = payable(address(this)).balance;\n if (ethBalance > 0) {\n IWETH(payable(WETH_TOKEN)).deposit{value: ethBalance}();\n }\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `EXCHANGE` variable\n /// @return exchange_ The `EXCHANGE` variable value\n function getExchange() external view returns (address exchange_) {\n return EXCHANGE;\n }\n\n /// @notice Gets the `TOKEN_TRANSFER_PROXY` variable\n /// @return tokenTransferProxy_ The `TOKEN_TRANSFER_PROXY` variable value\n function getTokenTransferProxy() external view returns (address tokenTransferProxy_) {\n return TOKEN_TRANSFER_PROXY;\n }\n\n /// @notice Gets the `WETH_TOKEN` variable\n /// @return wethToken_ The `WETH_TOKEN` variable value\n function getWethToken() external view returns (address wethToken_) {\n return WETH_TOKEN;\n }\n}\n" }, "contracts/release/interfaces/IWETH.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title WETH Interface\n/// @author Enzyme Council \ninterface IWETH {\n function deposit() external payable;\n\n function withdraw(uint256) external;\n}\n" }, "contracts/release/extensions/integration-manager/integrations/adapters/KyberAdapter.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"../../../../interfaces/IKyberNetworkProxy.sol\";\nimport \"../../../../interfaces/IWETH.sol\";\nimport \"../../../../utils/MathHelpers.sol\";\nimport \"../utils/AdapterBase.sol\";\n\n/// @title KyberAdapter Contract\n/// @author Enzyme Council \n/// @notice Adapter for interacting with Kyber Network\ncontract KyberAdapter is AdapterBase, MathHelpers {\n address private immutable EXCHANGE;\n address private immutable WETH_TOKEN;\n\n constructor(\n address _integrationManager,\n address _exchange,\n address _wethToken\n ) public AdapterBase(_integrationManager) {\n EXCHANGE = _exchange;\n WETH_TOKEN = _wethToken;\n }\n\n /// @dev Needed to receive ETH from swap\n receive() external payable {}\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Provides a constant string identifier for an adapter\n /// @return identifier_ An identifier string\n function identifier() external pure override returns (string memory identifier_) {\n return \"KYBER_NETWORK\";\n }\n\n /// @notice Parses the expected assets to receive from a call on integration\n /// @param _selector The function selector for the callOnIntegration\n /// @param _encodedCallArgs The encoded parameters for the callOnIntegration\n /// @return spendAssetsHandleType_ A type that dictates how to handle granting\n /// the adapter access to spend assets (`None` by default)\n /// @return spendAssets_ The assets to spend in the call\n /// @return spendAssetAmounts_ The max asset amounts to spend in the call\n /// @return incomingAssets_ The assets to receive in the call\n /// @return minIncomingAssetAmounts_ The min asset amounts to receive in the call\n function parseAssetsForMethod(bytes4 _selector, bytes calldata _encodedCallArgs)\n external\n view\n override\n returns (\n IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,\n address[] memory spendAssets_,\n uint256[] memory spendAssetAmounts_,\n address[] memory incomingAssets_,\n uint256[] memory minIncomingAssetAmounts_\n )\n {\n require(_selector == TAKE_ORDER_SELECTOR, \"parseAssetsForMethod: _selector invalid\");\n\n (\n address incomingAsset,\n uint256 minIncomingAssetAmount,\n address outgoingAsset,\n uint256 outgoingAssetAmount\n ) = __decodeCallArgs(_encodedCallArgs);\n\n require(\n incomingAsset != outgoingAsset,\n \"parseAssetsForMethod: incomingAsset and outgoingAsset asset cannot be the same\"\n );\n require(outgoingAssetAmount > 0, \"parseAssetsForMethod: outgoingAssetAmount must be >0\");\n\n spendAssets_ = new address[](1);\n spendAssets_[0] = outgoingAsset;\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = outgoingAssetAmount;\n\n incomingAssets_ = new address[](1);\n incomingAssets_[0] = incomingAsset;\n minIncomingAssetAmounts_ = new uint256[](1);\n minIncomingAssetAmounts_[0] = minIncomingAssetAmount;\n\n return (\n IIntegrationManager.SpendAssetsHandleType.Transfer,\n spendAssets_,\n spendAssetAmounts_,\n incomingAssets_,\n minIncomingAssetAmounts_\n );\n }\n\n /// @notice Trades assets on Kyber\n /// @param _vaultProxy The VaultProxy of the calling fund\n /// @param _encodedCallArgs Encoded order parameters\n /// @param _encodedAssetTransferArgs Encoded args for expected assets to spend and receive\n function takeOrder(\n address _vaultProxy,\n bytes calldata _encodedCallArgs,\n bytes calldata _encodedAssetTransferArgs\n )\n external\n onlyIntegrationManager\n fundAssetsTransferHandler(_vaultProxy, _encodedAssetTransferArgs)\n {\n (\n address incomingAsset,\n uint256 minIncomingAssetAmount,\n address outgoingAsset,\n uint256 outgoingAssetAmount\n ) = __decodeCallArgs(_encodedCallArgs);\n\n uint256 minExpectedRate = __calcNormalizedRate(\n ERC20(outgoingAsset).decimals(),\n outgoingAssetAmount,\n ERC20(incomingAsset).decimals(),\n minIncomingAssetAmount\n );\n\n if (outgoingAsset == WETH_TOKEN) {\n __swapNativeAssetToToken(incomingAsset, outgoingAssetAmount, minExpectedRate);\n } else if (incomingAsset == WETH_TOKEN) {\n __swapTokenToNativeAsset(outgoingAsset, outgoingAssetAmount, minExpectedRate);\n } else {\n __swapTokenToToken(incomingAsset, outgoingAsset, outgoingAssetAmount, minExpectedRate);\n }\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Helper to decode the encoded call arguments\n function __decodeCallArgs(bytes memory _encodedCallArgs)\n private\n pure\n returns (\n address incomingAsset_,\n uint256 minIncomingAssetAmount_,\n address outgoingAsset_,\n uint256 outgoingAssetAmount_\n )\n {\n return abi.decode(_encodedCallArgs, (address, uint256, address, uint256));\n }\n\n /// @dev Executes a swap of ETH to ERC20\n function __swapNativeAssetToToken(\n address _incomingAsset,\n uint256 _outgoingAssetAmount,\n uint256 _minExpectedRate\n ) private {\n IWETH(payable(WETH_TOKEN)).withdraw(_outgoingAssetAmount);\n\n IKyberNetworkProxy(EXCHANGE).swapEtherToToken{value: _outgoingAssetAmount}(\n _incomingAsset,\n _minExpectedRate\n );\n }\n\n /// @dev Executes a swap of ERC20 to ETH\n function __swapTokenToNativeAsset(\n address _outgoingAsset,\n uint256 _outgoingAssetAmount,\n uint256 _minExpectedRate\n ) private {\n __approveMaxAsNeeded(_outgoingAsset, EXCHANGE, _outgoingAssetAmount);\n\n IKyberNetworkProxy(EXCHANGE).swapTokenToEther(\n _outgoingAsset,\n _outgoingAssetAmount,\n _minExpectedRate\n );\n\n IWETH(payable(WETH_TOKEN)).deposit{value: payable(address(this)).balance}();\n }\n\n /// @dev Executes a swap of ERC20 to ERC20\n function __swapTokenToToken(\n address _incomingAsset,\n address _outgoingAsset,\n uint256 _outgoingAssetAmount,\n uint256 _minExpectedRate\n ) private {\n __approveMaxAsNeeded(_outgoingAsset, EXCHANGE, _outgoingAssetAmount);\n\n IKyberNetworkProxy(EXCHANGE).swapTokenToToken(\n _outgoingAsset,\n _outgoingAssetAmount,\n _incomingAsset,\n _minExpectedRate\n );\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `EXCHANGE` variable\n /// @return exchange_ The `EXCHANGE` variable value\n function getExchange() external view returns (address exchange_) {\n return EXCHANGE;\n }\n\n /// @notice Gets the `WETH_TOKEN` variable\n /// @return wethToken_ The `WETH_TOKEN` variable value\n function getWethToken() external view returns (address wethToken_) {\n return WETH_TOKEN;\n }\n}\n" }, "contracts/release/interfaces/IKyberNetworkProxy.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title Kyber Network interface\ninterface IKyberNetworkProxy {\n function swapEtherToToken(address, uint256) external payable returns (uint256);\n\n function swapTokenToEther(\n address,\n uint256,\n uint256\n ) external returns (uint256);\n\n function swapTokenToToken(\n address,\n uint256,\n address,\n uint256\n ) external returns (uint256);\n}\n" }, "contracts/mocks/prices/MockUniswapV2PriceSource.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../release/interfaces/IUniswapV2Pair.sol\";\nimport \"../tokens/MockToken.sol\";\n\n/// @dev This price source mocks the integration with Uniswap Pair\n/// Docs of Uniswap Pair implementation: \ncontract MockUniswapV2PriceSource is MockToken(\"Uniswap V2\", \"UNI-V2\", 18) {\n address private immutable TOKEN_0;\n address private immutable TOKEN_1;\n\n constructor(address _token0, address _token1) public {\n TOKEN_0 = _token0;\n TOKEN_1 = _token1;\n }\n\n /// @dev returns reserves for each token on the Uniswap Pair\n /// Reserves will be used to calculate the pair price\n /// Inherited from IUniswapV2Pair\n function getReserves()\n external\n view\n returns (\n uint112 reserve0,\n uint112 reserve1,\n uint32 blockTimestampLast\n )\n {\n reserve0 = uint112(ERC20(token0()).balanceOf(address(this)));\n reserve1 = uint112(ERC20(token1()).balanceOf(address(this)));\n return (reserve0, reserve1, uint32(block.timestamp));\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @dev Inherited from IUniswapV2Pair\n function token0() public view returns (address) {\n return TOKEN_0;\n }\n\n /// @dev Inherited from IUniswapV2Pair\n function token1() public view returns (address) {\n return TOKEN_1;\n }\n\n /// @dev Inherited from IUniswapV2Pair\n function kLast() public pure returns (uint256) {\n return 0;\n }\n}\n" }, "contracts/mocks/tokens/MockToken.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/token/ERC20/ERC20Burnable.sol\";\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\n\ncontract MockToken is ERC20Burnable {\n using SafeMath for uint256;\n\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals\n ) public ERC20(_name, _symbol) {\n _setupDecimals(_decimals);\n _mint(msg.sender, uint256(100000000).mul(10**uint256(_decimals)));\n }\n\n function mintFor(address _who, uint256 _amount) external {\n _mint(_who, _amount);\n }\n\n function mint(uint256 _amount) external {\n _mint(msg.sender, _amount);\n }\n}\n" }, "@openzeppelin/contracts/token/ERC20/ERC20Burnable.sol": { "content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.6.0;\n\nimport \"../../GSN/Context.sol\";\nimport \"./ERC20.sol\";\n\n/**\n * @dev Extension of {ERC20} that allows token holders to destroy both their own\n * tokens and those that they have an allowance for, in a way that can be\n * recognized off-chain (via event analysis).\n */\nabstract contract ERC20Burnable is Context, ERC20 {\n /**\n * @dev Destroys `amount` tokens from the caller.\n *\n * See {ERC20-_burn}.\n */\n function burn(uint256 amount) public virtual {\n _burn(_msgSender(), amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, deducting from the caller's\n * allowance.\n *\n * See {ERC20-_burn} and {ERC20-allowance}.\n *\n * Requirements:\n *\n * - the caller must have allowance for ``accounts``'s tokens of at least\n * `amount`.\n */\n function burnFrom(address account, uint256 amount) public virtual {\n uint256 decreasedAllowance = allowance(account, _msgSender()).sub(amount, \"ERC20: burn amount exceeds allowance\");\n\n _approve(account, _msgSender(), decreasedAllowance);\n _burn(account, amount);\n }\n}\n" }, "contracts/mocks/tokens/MockReentrancyToken.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../release/core/fund/comptroller/ComptrollerLib.sol\";\nimport \"./MockToken.sol\";\n\n/// @title MockReentrancyToken Contract\n/// @author Enzyme Council \n/// @notice A mock ERC20 token implementation that is able to re-entrance redeemShares and buyShares functions\ncontract MockReentrancyToken is MockToken(\"Mock Reentrancy Token\", \"MRT\", 18) {\n bool public bad;\n address public comptrollerProxy;\n\n function makeItReentracyToken(address _comptrollerProxy) external {\n bad = true;\n comptrollerProxy = _comptrollerProxy;\n }\n\n function transfer(address recipient, uint256 amount) public override returns (bool) {\n if (bad) {\n ComptrollerLib(comptrollerProxy).redeemShares();\n } else {\n _transfer(_msgSender(), recipient, amount);\n }\n return true;\n }\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n if (bad) {\n ComptrollerLib(comptrollerProxy).buyShares(\n new address[](0),\n new uint256[](0),\n new uint256[](0)\n );\n } else {\n _transfer(sender, recipient, amount);\n }\n return true;\n }\n}\n" }, "contracts/mocks/tokens/MockSynthetixToken.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"./../../release/interfaces/ISynthetixProxyERC20.sol\";\nimport \"./../../release/interfaces/ISynthetixSynth.sol\";\nimport \"./MockToken.sol\";\n\ncontract MockSynthetixToken is ISynthetixProxyERC20, ISynthetixSynth, MockToken, Ownable {\n using SafeMath for uint256;\n\n bytes32 public override currencyKey;\n uint256 public constant WAITING_PERIOD_SECS = 3 * 60;\n\n mapping(address => uint256) public timelockByAccount;\n\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals,\n bytes32 _currencyKey\n ) public MockToken(_name, _symbol, _decimals) {\n currencyKey = _currencyKey;\n }\n\n function setCurrencyKey(bytes32 _currencyKey) external onlyOwner {\n currencyKey = _currencyKey;\n }\n\n function _isLocked(address account) internal view returns (bool) {\n return timelockByAccount[account] >= now;\n }\n\n function _beforeTokenTransfer(\n address from,\n address,\n uint256\n ) internal override {\n require(!_isLocked(from), \"Cannot settle during waiting period\");\n }\n\n function target() external view override returns (address) {\n return address(this);\n }\n\n function isLocked(address account) external view returns (bool) {\n return _isLocked(account);\n }\n\n function burnFrom(address account, uint256 amount) public override {\n _burn(account, amount);\n }\n\n function lock(address account) public {\n timelockByAccount[account] = now.add(WAITING_PERIOD_SECS);\n }\n\n function unlock(address account) public {\n timelockByAccount[account] = 0;\n }\n}\n" }, "contracts/mocks/prices/MockSynthetixPriceSource.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"./../../release/interfaces/ISynthetixExchangeRates.sol\";\nimport \"../prices/MockChainlinkPriceSource.sol\";\n\n/// @dev This price source offers two different options getting prices\n/// The first one is getting a fixed rate, which can be useful for tests\n/// The second approach calculates dinamically the rate making use of a chainlink price source\n/// Mocks the functionality of the folllowing Synthetix contracts: { Exchanger, ExchangeRates }\ncontract MockSynthetixPriceSource is Ownable, ISynthetixExchangeRates {\n using SafeMath for uint256;\n\n mapping(bytes32 => uint256) private fixedRate;\n mapping(bytes32 => AggregatorInfo) private currencyKeyToAggregator;\n\n enum RateAsset {ETH, USD}\n\n struct AggregatorInfo {\n address aggregator;\n RateAsset rateAsset;\n }\n\n constructor(address _ethUsdAggregator) public {\n currencyKeyToAggregator[bytes32(\"ETH\")] = AggregatorInfo({\n aggregator: _ethUsdAggregator,\n rateAsset: RateAsset.USD\n });\n }\n\n function setPriceSourcesForCurrencyKeys(\n bytes32[] calldata _currencyKeys,\n address[] calldata _aggregators,\n RateAsset[] calldata _rateAssets\n ) external onlyOwner {\n require(\n _currencyKeys.length == _aggregators.length &&\n _rateAssets.length == _aggregators.length\n );\n for (uint256 i = 0; i < _currencyKeys.length; i++) {\n currencyKeyToAggregator[_currencyKeys[i]] = AggregatorInfo({\n aggregator: _aggregators[i],\n rateAsset: _rateAssets[i]\n });\n }\n }\n\n function setRate(bytes32 _currencyKey, uint256 _rate) external onlyOwner {\n fixedRate[_currencyKey] = _rate;\n }\n\n /// @dev Calculates the rate from a currencty key against its RateAsset\n /// TODO: Use CentralizedRateProvider to randomize and make consistent with the rest\n function rateAndInvalid(bytes32 _currencyKey)\n external\n view\n override\n returns (uint256 rate_, bool isInvalid_)\n {\n uint256 storedRate = getFixedRate(_currencyKey);\n if (storedRate != 0) {\n rate_ = storedRate;\n } else {\n AggregatorInfo memory aggregatorInfo = getAggregatorFromCurrencyKey(_currencyKey);\n address aggregator = aggregatorInfo.aggregator;\n\n if (aggregator != address(0)) {\n uint256 decimals = MockChainlinkPriceSource(aggregator).decimals();\n rate_ = uint256(MockChainlinkPriceSource(aggregator).latestAnswer()).mul(\n 10**(uint256(18).sub(decimals))\n );\n\n if (aggregatorInfo.rateAsset == RateAsset.ETH) {\n uint256 ethToUsd = uint256(\n MockChainlinkPriceSource(\n getAggregatorFromCurrencyKey(bytes32(\"ETH\"))\n .aggregator\n )\n .latestAnswer()\n );\n rate_ = rate_.mul(ethToUsd).div(10**8);\n }\n }\n }\n\n isInvalid_ = (rate_ == 0);\n return (rate_, isInvalid_);\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n function getAggregatorFromCurrencyKey(bytes32 _currencyKey)\n public\n view\n returns (AggregatorInfo memory _aggregator)\n {\n return currencyKeyToAggregator[_currencyKey];\n }\n\n function getFixedRate(bytes32 _currencyKey) public view returns (uint256) {\n return fixedRate[_currencyKey];\n }\n}\n" }, "contracts/mocks/prices/MockChainlinkPriceSource.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\ncontract MockChainlinkPriceSource {\n event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 timestamp);\n\n uint256 public DECIMALS;\n\n int256 public latestAnswer;\n uint256 public latestTimestamp;\n uint256 public roundId;\n address public aggregator;\n\n constructor(uint256 _decimals) public {\n DECIMALS = _decimals;\n latestAnswer = int256(10**_decimals);\n latestTimestamp = now;\n roundId = 1;\n aggregator = address(this);\n }\n\n function setLatestAnswer(int256 _nextAnswer, uint256 _nextTimestamp) external {\n latestAnswer = _nextAnswer;\n latestTimestamp = _nextTimestamp;\n roundId = roundId + 1;\n\n emit AnswerUpdated(latestAnswer, roundId, latestTimestamp);\n }\n\n function setAggregator(address _nextAggregator) external {\n aggregator = _nextAggregator;\n }\n\n function decimals() public view returns (uint256) {\n return DECIMALS;\n }\n}\n" }, "contracts/mocks/integratees/MockSynthetixIntegratee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\nimport \"./../../release/interfaces/ISynthetixExchangeRates.sol\";\nimport \"./../tokens/MockSynthetixToken.sol\";\n\n/// @dev Synthetix Integratee. Mocks functionalities from the folllowing synthetix contracts\n/// Synthetix, SynthetixAddressResolver, SynthetixDelegateApprovals\n/// Link to contracts: \ncontract MockSynthetixIntegratee is Ownable {\n using SafeMath for uint256;\n\n mapping(address => mapping(address => bool)) private authorizerToDelegateToApproval;\n mapping(bytes32 => address) private currencyKeyToSynth;\n\n address private immutable EXCHANGE_RATES;\n uint256 private immutable FEE;\n\n uint256 private constant UNIT_FEE = 1000;\n\n constructor(uint256 _fee, address _exchangeRates) public {\n FEE = _fee;\n EXCHANGE_RATES = address(_exchangeRates);\n }\n\n receive() external payable {}\n\n function exchangeOnBehalfWithTracking(\n address _exchangeForAddress,\n bytes32 _srcCurrencyKey,\n uint256 _srcAmount,\n bytes32 _destinationCurrencyKey,\n address,\n bytes32\n ) external returns (uint256 amountReceived_) {\n require(\n canExchangeFor(msg.sender, _exchangeForAddress),\n \"exchangeOnBehalfWithTracking: Not approved to act on behalf\"\n );\n\n amountReceived_ = __calculateAndSwap(\n _exchangeForAddress,\n _srcAmount,\n _srcCurrencyKey,\n _destinationCurrencyKey\n );\n\n return amountReceived_;\n }\n\n function getAmountsForExchange(\n uint256 _srcAmount,\n bytes32 _srcCurrencyKey,\n bytes32 _destCurrencyKey\n )\n public\n view\n returns (\n uint256 amountReceived_,\n uint256 fee_,\n uint256 exchangeFeeRate_\n )\n {\n ISynthetixExchangeRates exchangeRates = ISynthetixExchangeRates(EXCHANGE_RATES);\n require(\n currencyKeyToSynth[_srcCurrencyKey] != address(0) &&\n currencyKeyToSynth[_destCurrencyKey] != address(0),\n \"getAmountsForExchange: Currency key doesn't have an associated synth\"\n );\n\n (uint256 srcRate, ) = exchangeRates.rateAndInvalid(_srcCurrencyKey);\n (uint256 destRate, ) = exchangeRates.rateAndInvalid(_destCurrencyKey);\n uint256 destAmount = _srcAmount.mul(srcRate).div(destRate);\n\n exchangeFeeRate_ = FEE;\n amountReceived_ = destAmount.mul(UNIT_FEE.sub(exchangeFeeRate_)).div(UNIT_FEE);\n fee_ = destAmount.sub(amountReceived_);\n\n return (amountReceived_, fee_, exchangeFeeRate_);\n }\n\n function setSynthFromCurrencyKeys(bytes32[] calldata _currencyKeys, address[] calldata _synths)\n external\n onlyOwner\n {\n require(\n _currencyKeys.length == _synths.length,\n \"setSynthFromCurrencyKey: Unequal _currencyKeys and _synths lengths\"\n );\n for (uint256 i = 0; i < _currencyKeys.length; i++) {\n currencyKeyToSynth[_currencyKeys[i]] = _synths[i];\n }\n }\n\n function approveExchangeOnBehalf(address _delegate) external {\n authorizerToDelegateToApproval[msg.sender][_delegate] = true;\n }\n\n function __calculateAndSwap(\n address _exchangeForAddress,\n uint256 _srcAmount,\n bytes32 _srcCurrencyKey,\n bytes32 _destCurrencyKey\n ) private returns (uint256 amountReceived_) {\n MockSynthetixToken srcSynth = MockSynthetixToken(currencyKeyToSynth[_srcCurrencyKey]);\n MockSynthetixToken destSynth = MockSynthetixToken(currencyKeyToSynth[_destCurrencyKey]);\n\n require(address(srcSynth) != address(0), \"__calculateAndSwap: Source synth is not listed\");\n require(\n address(destSynth) != address(0),\n \"__calculateAndSwap: Destination synth is not listed\"\n );\n require(\n !srcSynth.isLocked(_exchangeForAddress),\n \"__calculateAndSwap: Cannot settle during waiting period\"\n );\n\n (amountReceived_, , ) = getAmountsForExchange(\n _srcAmount,\n _srcCurrencyKey,\n _destCurrencyKey\n );\n\n srcSynth.burnFrom(_exchangeForAddress, _srcAmount);\n destSynth.mintFor(_exchangeForAddress, amountReceived_);\n destSynth.lock(_exchangeForAddress);\n\n return amountReceived_;\n }\n\n function requireAndGetAddress(bytes32 _name, string calldata)\n external\n view\n returns (address resolvedAddress_)\n {\n if (_name == \"ExchangeRates\") {\n return EXCHANGE_RATES;\n }\n return address(this);\n }\n\n function settle(address, bytes32)\n external\n returns (\n uint256,\n uint256,\n uint256\n )\n {\n // TODO\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n function canExchangeFor(address, address) public pure returns (bool canExchange_) {\n return true;\n }\n\n function getExchangeRates() public view returns (address exchangeRates_) {\n return EXCHANGE_RATES;\n }\n\n function getFee() public view returns (uint256 fee_) {\n return FEE;\n }\n\n function getSynthFromCurrencyKey(bytes32 _currencyKey) public view returns (address synth_) {\n return currencyKeyToSynth[_currencyKey];\n }\n\n function getUnitFee() public pure returns (uint256 fee_) {\n return UNIT_FEE;\n }\n}\n" }, "contracts/mocks/integratees/MockKyberIntegratee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../release/utils/MathHelpers.sol\";\nimport \"../prices/CentralizedRateProvider.sol\";\nimport \"../utils/SwapperBase.sol\";\n\ncontract MockKyberIntegratee is SwapperBase, Ownable, MathHelpers {\n using SafeMath for uint256;\n\n address private immutable MOCK_CENTRALIZED_RATE_PROVIDER;\n address private immutable WETH;\n\n uint256 private constant PRECISION = 18;\n\n // Deviation set in % defines the MAX deviation per block from the mean rate\n uint256 private blockNumberDeviation;\n\n constructor(\n address _mockCentralizedRateProvider,\n address _weth,\n uint256 _blockNumberDeviation\n ) public {\n MOCK_CENTRALIZED_RATE_PROVIDER = _mockCentralizedRateProvider;\n WETH = _weth;\n blockNumberDeviation = _blockNumberDeviation;\n }\n\n function swapEtherToToken(address _destToken, uint256) external payable returns (uint256) {\n uint256 destAmount = CentralizedRateProvider(MOCK_CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValueRandomized(WETH, msg.value, _destToken, blockNumberDeviation);\n\n __swapAssets(msg.sender, ETH_ADDRESS, msg.value, _destToken, destAmount);\n return msg.value;\n }\n\n function swapTokenToEther(\n address _srcToken,\n uint256 _srcAmount,\n uint256\n ) external returns (uint256) {\n uint256 destAmount = CentralizedRateProvider(MOCK_CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValueRandomized(_srcToken, _srcAmount, WETH, blockNumberDeviation);\n\n __swapAssets(msg.sender, _srcToken, _srcAmount, ETH_ADDRESS, destAmount);\n return _srcAmount;\n }\n\n function swapTokenToToken(\n address _srcToken,\n uint256 _srcAmount,\n address _destToken,\n uint256\n ) external returns (uint256) {\n uint256 destAmount = CentralizedRateProvider(MOCK_CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValueRandomized(_srcToken, _srcAmount, _destToken, blockNumberDeviation);\n\n __swapAssets(msg.sender, _srcToken, _srcAmount, _destToken, destAmount);\n return _srcAmount;\n }\n\n function setBlockNumberDeviation(uint256 _deviationPct) external onlyOwner {\n blockNumberDeviation = _deviationPct;\n }\n\n function getExpectedRate(\n address _srcToken,\n address _destToken,\n uint256 _amount\n ) external returns (uint256 rate_, uint256 worstRate_) {\n if (_srcToken == ETH_ADDRESS) {\n _srcToken = WETH;\n }\n if (_destToken == ETH_ADDRESS) {\n _destToken = WETH;\n }\n\n uint256 destAmount = CentralizedRateProvider(MOCK_CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValueRandomizedBySender(_srcToken, _amount, _destToken);\n rate_ = __calcNormalizedRate(\n ERC20(_srcToken).decimals(),\n _amount,\n ERC20(_destToken).decimals(),\n destAmount\n );\n worstRate_ = rate_.mul(uint256(100).sub(blockNumberDeviation)).div(100);\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n function getCentralizedRateProvider() public view returns (address) {\n return MOCK_CENTRALIZED_RATE_PROVIDER;\n }\n\n function getWeth() public view returns (address) {\n return WETH;\n }\n\n function getBlockNumberDeviation() public view returns (uint256) {\n return blockNumberDeviation;\n }\n\n function getPrecision() public pure returns (uint256) {\n return PRECISION;\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/call-on-integration/AssetWhitelist.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../../../core/fund/comptroller/ComptrollerLib.sol\";\nimport \"../../../../core/fund/vault/VaultLib.sol\";\nimport \"../../../../utils/AddressArrayLib.sol\";\nimport \"../utils/AddressListPolicyMixin.sol\";\nimport \"./utils/PostCallOnIntegrationValidatePolicyBase.sol\";\n\n/// @title AssetWhitelist Contract\n/// @author Enzyme Council \n/// @notice A policy that only allows a configurable whitelist of assets in a fund's holdings\ncontract AssetWhitelist is PostCallOnIntegrationValidatePolicyBase, AddressListPolicyMixin {\n using AddressArrayLib for address[];\n\n constructor(address _policyManager) public PolicyBase(_policyManager) {}\n\n /// @notice Validates and initializes a policy as necessary prior to fund activation\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _vaultProxy The fund's VaultProxy address\n function activateForFund(address _comptrollerProxy, address _vaultProxy)\n external\n override\n onlyPolicyManager\n {\n require(\n passesRule(_comptrollerProxy, VaultLib(_vaultProxy).getTrackedAssets()),\n \"activateForFund: Non-whitelisted asset detected\"\n );\n }\n\n /// @notice Add the initial policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function addFundSettings(address _comptrollerProxy, bytes calldata _encodedSettings)\n external\n override\n onlyPolicyManager\n {\n address[] memory assets = abi.decode(_encodedSettings, (address[]));\n require(\n assets.contains(ComptrollerLib(_comptrollerProxy).getDenominationAsset()),\n \"addFundSettings: Must whitelist denominationAsset\"\n );\n\n __addToList(_comptrollerProxy, abi.decode(_encodedSettings, (address[])));\n }\n\n /// @notice Provides a constant string identifier for a policy\n /// @return identifier_ The identifer string\n function identifier() external pure override returns (string memory identifier_) {\n return \"ASSET_WHITELIST\";\n }\n\n /// @notice Checks whether a particular condition passes the rule for a particular fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _assets The assets with which to check the rule\n /// @return isValid_ True if the rule passes\n function passesRule(address _comptrollerProxy, address[] memory _assets)\n public\n view\n returns (bool isValid_)\n {\n for (uint256 i; i < _assets.length; i++) {\n if (!isInList(_comptrollerProxy, _assets[i])) {\n return false;\n }\n }\n\n return true;\n }\n\n /// @notice Apply the rule with the specified parameters of a PolicyHook\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedArgs Encoded args with which to validate the rule\n /// @return isValid_ True if the rule passes\n function validateRule(\n address _comptrollerProxy,\n address,\n IPolicyManager.PolicyHook,\n bytes calldata _encodedArgs\n ) external override returns (bool isValid_) {\n (, , address[] memory incomingAssets, , , ) = __decodeRuleArgs(_encodedArgs);\n\n return passesRule(_comptrollerProxy, incomingAssets);\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/utils/AddressListPolicyMixin.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/utils/EnumerableSet.sol\";\n\n/// @title AddressListPolicyMixin Contract\n/// @author Enzyme Council \n/// @notice An abstract mixin contract for policies that use an address list\nabstract contract AddressListPolicyMixin {\n using EnumerableSet for EnumerableSet.AddressSet;\n\n event AddressesAdded(address indexed comptrollerProxy, address[] items);\n\n event AddressesRemoved(address indexed comptrollerProxy, address[] items);\n\n mapping(address => EnumerableSet.AddressSet) private comptrollerProxyToList;\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Get all addresses in a fund's list\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @return list_ The addresses in the fund's list\n function getList(address _comptrollerProxy) external view returns (address[] memory list_) {\n list_ = new address[](comptrollerProxyToList[_comptrollerProxy].length());\n for (uint256 i = 0; i < list_.length; i++) {\n list_[i] = comptrollerProxyToList[_comptrollerProxy].at(i);\n }\n return list_;\n }\n\n // PUBLIC FUNCTIONS\n\n /// @notice Check if an address is in a fund's list\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _item The address to check against the list\n /// @return isInList_ True if the address is in the list\n function isInList(address _comptrollerProxy, address _item)\n public\n view\n returns (bool isInList_)\n {\n return comptrollerProxyToList[_comptrollerProxy].contains(_item);\n }\n\n // INTERNAL FUNCTIONS\n\n /// @dev Helper to add addresses to the calling fund's list\n function __addToList(address _comptrollerProxy, address[] memory _items) internal {\n require(_items.length > 0, \"__addToList: No addresses provided\");\n\n for (uint256 i = 0; i < _items.length; i++) {\n require(\n comptrollerProxyToList[_comptrollerProxy].add(_items[i]),\n \"__addToList: Address already exists in list\"\n );\n }\n\n emit AddressesAdded(_comptrollerProxy, _items);\n }\n\n /// @dev Helper to remove addresses from the calling fund's list\n function __removeFromList(address _comptrollerProxy, address[] memory _items) internal {\n require(_items.length > 0, \"__removeFromList: No addresses provided\");\n\n for (uint256 i = 0; i < _items.length; i++) {\n require(\n comptrollerProxyToList[_comptrollerProxy].remove(_items[i]),\n \"__removeFromList: Address does not exist in list\"\n );\n }\n\n emit AddressesRemoved(_comptrollerProxy, _items);\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/call-on-integration/AssetBlacklist.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../../../core/fund/comptroller/ComptrollerLib.sol\";\nimport \"../../../../core/fund/vault/VaultLib.sol\";\nimport \"../../../../utils/AddressArrayLib.sol\";\nimport \"../utils/AddressListPolicyMixin.sol\";\nimport \"./utils/PostCallOnIntegrationValidatePolicyBase.sol\";\n\n/// @title AssetBlacklist Contract\n/// @author Enzyme Council \n/// @notice A policy that disallows a configurable blacklist of assets in a fund's holdings\ncontract AssetBlacklist is PostCallOnIntegrationValidatePolicyBase, AddressListPolicyMixin {\n using AddressArrayLib for address[];\n\n constructor(address _policyManager) public PolicyBase(_policyManager) {}\n\n /// @notice Validates and initializes a policy as necessary prior to fund activation\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _vaultProxy The fund's VaultProxy address\n function activateForFund(address _comptrollerProxy, address _vaultProxy)\n external\n override\n onlyPolicyManager\n {\n require(\n passesRule(_comptrollerProxy, VaultLib(_vaultProxy).getTrackedAssets()),\n \"activateForFund: Blacklisted asset detected\"\n );\n }\n\n /// @notice Add the initial policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function addFundSettings(address _comptrollerProxy, bytes calldata _encodedSettings)\n external\n override\n onlyPolicyManager\n {\n address[] memory assets = abi.decode(_encodedSettings, (address[]));\n require(\n !assets.contains(ComptrollerLib(_comptrollerProxy).getDenominationAsset()),\n \"addFundSettings: Cannot blacklist denominationAsset\"\n );\n\n __addToList(_comptrollerProxy, assets);\n }\n\n /// @notice Provides a constant string identifier for a policy\n /// @return identifier_ The identifer string\n function identifier() external pure override returns (string memory identifier_) {\n return \"ASSET_BLACKLIST\";\n }\n\n /// @notice Checks whether a particular condition passes the rule for a particular fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _assets The assets with which to check the rule\n /// @return isValid_ True if the rule passes\n function passesRule(address _comptrollerProxy, address[] memory _assets)\n public\n view\n returns (bool isValid_)\n {\n for (uint256 i; i < _assets.length; i++) {\n if (isInList(_comptrollerProxy, _assets[i])) {\n return false;\n }\n }\n\n return true;\n }\n\n /// @notice Apply the rule with the specified parameters of a PolicyHook\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedArgs Encoded args with which to validate the rule\n /// @return isValid_ True if the rule passes\n function validateRule(\n address _comptrollerProxy,\n address,\n IPolicyManager.PolicyHook,\n bytes calldata _encodedArgs\n ) external override returns (bool isValid_) {\n (, , address[] memory incomingAssets, , , ) = __decodeRuleArgs(_encodedArgs);\n\n return passesRule(_comptrollerProxy, incomingAssets);\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/call-on-integration/AdapterWhitelist.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../utils/AddressListPolicyMixin.sol\";\nimport \"./utils/PreCallOnIntegrationValidatePolicyBase.sol\";\n\n/// @title AdapterWhitelist Contract\n/// @author Enzyme Council \n/// @notice A policy that only allows a configurable whitelist of adapters for use by a fund\ncontract AdapterWhitelist is PreCallOnIntegrationValidatePolicyBase, AddressListPolicyMixin {\n constructor(address _policyManager) public PolicyBase(_policyManager) {}\n\n /// @notice Add the initial policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function addFundSettings(address _comptrollerProxy, bytes calldata _encodedSettings)\n external\n override\n onlyPolicyManager\n {\n __addToList(_comptrollerProxy, abi.decode(_encodedSettings, (address[])));\n }\n\n /// @notice Provides a constant string identifier for a policy\n /// @return identifier_ The identifer string\n function identifier() external pure override returns (string memory identifier_) {\n return \"ADAPTER_WHITELIST\";\n }\n\n /// @notice Checks whether a particular condition passes the rule for a particular fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _adapter The adapter with which to check the rule\n /// @return isValid_ True if the rule passes\n function passesRule(address _comptrollerProxy, address _adapter)\n public\n view\n returns (bool isValid_)\n {\n return isInList(_comptrollerProxy, _adapter);\n }\n\n /// @notice Apply the rule with the specified parameters of a PolicyHook\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedArgs Encoded args with which to validate the rule\n /// @return isValid_ True if the rule passes\n function validateRule(\n address _comptrollerProxy,\n address,\n IPolicyManager.PolicyHook,\n bytes calldata _encodedArgs\n ) external override returns (bool isValid_) {\n (address adapter, ) = __decodeRuleArgs(_encodedArgs);\n\n return passesRule(_comptrollerProxy, adapter);\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/call-on-integration/utils/PreCallOnIntegrationValidatePolicyBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../utils/PolicyBase.sol\";\n\n/// @title CallOnIntegrationPreValidatePolicyMixin Contract\n/// @author Enzyme Council \n/// @notice A mixin contract for policies that only implement the PreCallOnIntegration policy hook\nabstract contract PreCallOnIntegrationValidatePolicyBase is PolicyBase {\n /// @notice Gets the implemented PolicyHooks for a policy\n /// @return implementedHooks_ The implemented PolicyHooks\n function implementedHooks()\n external\n view\n override\n returns (IPolicyManager.PolicyHook[] memory implementedHooks_)\n {\n implementedHooks_ = new IPolicyManager.PolicyHook[](1);\n implementedHooks_[0] = IPolicyManager.PolicyHook.PreCallOnIntegration;\n\n return implementedHooks_;\n }\n\n /// @notice Helper to decode rule arguments\n function __decodeRuleArgs(bytes memory _encodedRuleArgs)\n internal\n pure\n returns (address adapter_, bytes4 selector_)\n {\n return abi.decode(_encodedRuleArgs, (address, bytes4));\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/call-on-integration/GuaranteedRedemption.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../../utils/FundDeployerOwnerMixin.sol\";\nimport \"./utils/PreCallOnIntegrationValidatePolicyBase.sol\";\n\n/// @title GuaranteedRedemption Contract\n/// @author Enzyme Council \n/// @notice A policy that guarantees that shares will either be continuously redeemable or\n/// redeemable within a predictable daily window by preventing trading during a configurable daily period\ncontract GuaranteedRedemption is PreCallOnIntegrationValidatePolicyBase, FundDeployerOwnerMixin {\n using SafeMath for uint256;\n\n event AdapterAdded(address adapter);\n\n event AdapterRemoved(address adapter);\n\n event FundSettingsSet(\n address indexed comptrollerProxy,\n uint256 startTimestamp,\n uint256 duration\n );\n\n event RedemptionWindowBufferSet(uint256 prevBuffer, uint256 nextBuffer);\n\n struct RedemptionWindow {\n uint256 startTimestamp;\n uint256 duration;\n }\n\n uint256 private constant ONE_DAY = 24 * 60 * 60;\n\n mapping(address => bool) private adapterToCanBlockRedemption;\n mapping(address => RedemptionWindow) private comptrollerProxyToRedemptionWindow;\n uint256 private redemptionWindowBuffer;\n\n constructor(\n address _policyManager,\n address _fundDeployer,\n uint256 _redemptionWindowBuffer,\n address[] memory _redemptionBlockingAdapters\n ) public PolicyBase(_policyManager) FundDeployerOwnerMixin(_fundDeployer) {\n redemptionWindowBuffer = _redemptionWindowBuffer;\n\n __addRedemptionBlockingAdapters(_redemptionBlockingAdapters);\n }\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Add the initial policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function addFundSettings(address _comptrollerProxy, bytes calldata _encodedSettings)\n external\n override\n onlyPolicyManager\n {\n (uint256 startTimestamp, uint256 duration) = abi.decode(\n _encodedSettings,\n (uint256, uint256)\n );\n\n if (startTimestamp == 0) {\n require(duration == 0, \"addFundSettings: duration must be 0 if startTimestamp is 0\");\n return;\n }\n\n // Use 23 hours instead of 1 day to allow up to 1 hr of redemptionWindowBuffer\n require(\n duration > 0 && duration <= 23 hours,\n \"addFundSettings: duration must be between 1 second and 23 hours\"\n );\n\n comptrollerProxyToRedemptionWindow[_comptrollerProxy].startTimestamp = startTimestamp;\n comptrollerProxyToRedemptionWindow[_comptrollerProxy].duration = duration;\n\n emit FundSettingsSet(_comptrollerProxy, startTimestamp, duration);\n }\n\n /// @notice Provides a constant string identifier for a policy\n /// @return identifier_ The identifer string\n function identifier() external pure override returns (string memory identifier_) {\n return \"GUARANTEED_REDEMPTION\";\n }\n\n /// @notice Checks whether a particular condition passes the rule for a particular fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _adapter The adapter for which to check the rule\n /// @return isValid_ True if the rule passes\n function passesRule(address _comptrollerProxy, address _adapter)\n public\n view\n returns (bool isValid_)\n {\n if (!adapterCanBlockRedemption(_adapter)) {\n return true;\n }\n\n\n RedemptionWindow memory redemptionWindow\n = comptrollerProxyToRedemptionWindow[_comptrollerProxy];\n\n // If no RedemptionWindow is set, the fund can never use redemption-blocking adapters\n if (redemptionWindow.startTimestamp == 0) {\n return false;\n }\n\n uint256 latestRedemptionWindowStart = calcLatestRedemptionWindowStart(\n redemptionWindow.startTimestamp\n );\n\n // A fund can't trade during its redemption window, nor in the buffer beforehand.\n // The lower bound is only relevant when the startTimestamp is in the future,\n // so we check it last.\n if (\n block.timestamp >= latestRedemptionWindowStart.add(redemptionWindow.duration) ||\n block.timestamp <= latestRedemptionWindowStart.sub(redemptionWindowBuffer)\n ) {\n return true;\n }\n\n return false;\n }\n\n /// @notice Sets a new value for the redemptionWindowBuffer variable\n /// @param _nextRedemptionWindowBuffer The number of seconds for the redemptionWindowBuffer\n /// @dev The redemptionWindowBuffer is added to the beginning of the redemption window,\n /// and should always be >= the longest potential block on redemption amongst all adapters.\n /// (e.g., Synthetix blocks token transfers during a timelock after trading synths)\n function setRedemptionWindowBuffer(uint256 _nextRedemptionWindowBuffer)\n external\n onlyFundDeployerOwner\n {\n uint256 prevRedemptionWindowBuffer = redemptionWindowBuffer;\n require(\n _nextRedemptionWindowBuffer != prevRedemptionWindowBuffer,\n \"setRedemptionWindowBuffer: Value already set\"\n );\n\n redemptionWindowBuffer = _nextRedemptionWindowBuffer;\n\n emit RedemptionWindowBufferSet(prevRedemptionWindowBuffer, _nextRedemptionWindowBuffer);\n }\n\n /// @notice Apply the rule with the specified parameters of a PolicyHook\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedArgs Encoded args with which to validate the rule\n /// @return isValid_ True if the rule passes\n function validateRule(\n address _comptrollerProxy,\n address,\n IPolicyManager.PolicyHook,\n bytes calldata _encodedArgs\n ) external override returns (bool isValid_) {\n (address adapter, ) = __decodeRuleArgs(_encodedArgs);\n\n return passesRule(_comptrollerProxy, adapter);\n }\n\n // PUBLIC FUNCTIONS\n\n /// @notice Calculates the start of the most recent redemption window\n /// @param _startTimestamp The initial startTimestamp for the redemption window\n /// @return latestRedemptionWindowStart_ The starting timestamp of the most recent redemption window\n function calcLatestRedemptionWindowStart(uint256 _startTimestamp)\n public\n view\n returns (uint256 latestRedemptionWindowStart_)\n {\n if (block.timestamp <= _startTimestamp) {\n return _startTimestamp;\n }\n\n uint256 timeSinceStartTimestamp = block.timestamp.sub(_startTimestamp);\n uint256 timeSincePeriodStart = timeSinceStartTimestamp.mod(ONE_DAY);\n\n return block.timestamp.sub(timeSincePeriodStart);\n }\n\n ///////////////////////////////////////////\n // REDEMPTION-BLOCKING ADAPTERS REGISTRY //\n ///////////////////////////////////////////\n\n /// @notice Add adapters which can block shares redemption\n /// @param _adapters The addresses of adapters to be added\n function addRedemptionBlockingAdapters(address[] calldata _adapters)\n external\n onlyFundDeployerOwner\n {\n require(\n _adapters.length > 0,\n \"__addRedemptionBlockingAdapters: _adapters cannot be empty\"\n );\n\n __addRedemptionBlockingAdapters(_adapters);\n }\n\n /// @notice Remove adapters which can block shares redemption\n /// @param _adapters The addresses of adapters to be removed\n function removeRedemptionBlockingAdapters(address[] calldata _adapters)\n external\n onlyFundDeployerOwner\n {\n require(\n _adapters.length > 0,\n \"removeRedemptionBlockingAdapters: _adapters cannot be empty\"\n );\n\n for (uint256 i; i < _adapters.length; i++) {\n require(\n adapterCanBlockRedemption(_adapters[i]),\n \"removeRedemptionBlockingAdapters: adapter is not added\"\n );\n\n adapterToCanBlockRedemption[_adapters[i]] = false;\n\n emit AdapterRemoved(_adapters[i]);\n }\n }\n\n /// @dev Helper to mark adapters that can block shares redemption\n function __addRedemptionBlockingAdapters(address[] memory _adapters) private {\n for (uint256 i; i < _adapters.length; i++) {\n require(\n _adapters[i] != address(0),\n \"__addRedemptionBlockingAdapters: adapter cannot be empty\"\n );\n require(\n !adapterCanBlockRedemption(_adapters[i]),\n \"__addRedemptionBlockingAdapters: adapter already added\"\n );\n\n adapterToCanBlockRedemption[_adapters[i]] = true;\n\n emit AdapterAdded(_adapters[i]);\n }\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `redemptionWindowBuffer` variable\n /// @return redemptionWindowBuffer_ The `redemptionWindowBuffer` variable value\n function getRedemptionWindowBuffer() external view returns (uint256 redemptionWindowBuffer_) {\n return redemptionWindowBuffer;\n }\n\n /// @notice Gets the RedemptionWindow settings for a given fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @return redemptionWindow_ The RedemptionWindow settings\n function getRedemptionWindowForFund(address _comptrollerProxy)\n external\n view\n returns (RedemptionWindow memory redemptionWindow_)\n {\n return comptrollerProxyToRedemptionWindow[_comptrollerProxy];\n }\n\n /// @notice Checks whether an adapter can block shares redemption\n /// @param _adapter The address of the adapter to check\n /// @return canBlockRedemption_ True if the adapter can block shares redemption\n function adapterCanBlockRedemption(address _adapter)\n public\n view\n returns (bool canBlockRedemption_)\n {\n return adapterToCanBlockRedemption[_adapter];\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/call-on-integration/AdapterBlacklist.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../utils/AddressListPolicyMixin.sol\";\nimport \"./utils/PreCallOnIntegrationValidatePolicyBase.sol\";\n\n/// @title AdapterBlacklist Contract\n/// @author Enzyme Council \n/// @notice A policy that disallows a configurable blacklist of adapters from use by a fund\ncontract AdapterBlacklist is PreCallOnIntegrationValidatePolicyBase, AddressListPolicyMixin {\n constructor(address _policyManager) public PolicyBase(_policyManager) {}\n\n /// @notice Add the initial policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function addFundSettings(address _comptrollerProxy, bytes calldata _encodedSettings)\n external\n override\n onlyPolicyManager\n {\n __addToList(_comptrollerProxy, abi.decode(_encodedSettings, (address[])));\n }\n\n /// @notice Provides a constant string identifier for a policy\n /// @return identifier_ The identifer string\n function identifier() external pure override returns (string memory identifier_) {\n return \"ADAPTER_BLACKLIST\";\n }\n\n /// @notice Checks whether a particular condition passes the rule for a particular fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _adapter The adapter with which to check the rule\n /// @return isValid_ True if the rule passes\n function passesRule(address _comptrollerProxy, address _adapter)\n public\n view\n returns (bool isValid_)\n {\n return !isInList(_comptrollerProxy, _adapter);\n }\n\n /// @notice Apply the rule with the specified parameters of a PolicyHook\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedArgs Encoded args with which to validate the rule\n /// @return isValid_ True if the rule passes\n function validateRule(\n address _comptrollerProxy,\n address,\n IPolicyManager.PolicyHook,\n bytes calldata _encodedArgs\n ) external override returns (bool isValid_) {\n (address adapter, ) = __decodeRuleArgs(_encodedArgs);\n\n return passesRule(_comptrollerProxy, adapter);\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/buy-shares/InvestorWhitelist.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../utils/AddressListPolicyMixin.sol\";\nimport \"./utils/PreBuySharesValidatePolicyBase.sol\";\n\n/// @title InvestorWhitelist Contract\n/// @author Enzyme Council \n/// @notice A policy that only allows a configurable whitelist of investors to buy shares in a fund\ncontract InvestorWhitelist is PreBuySharesValidatePolicyBase, AddressListPolicyMixin {\n constructor(address _policyManager) public PolicyBase(_policyManager) {}\n\n /// @notice Adds the initial policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function addFundSettings(address _comptrollerProxy, bytes calldata _encodedSettings)\n external\n override\n onlyPolicyManager\n {\n __updateList(_comptrollerProxy, _encodedSettings);\n }\n\n /// @notice Provides a constant string identifier for a policy\n /// @return identifier_ The identifer string\n function identifier() external pure override returns (string memory identifier_) {\n return \"INVESTOR_WHITELIST\";\n }\n\n /// @notice Updates the policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function updateFundSettings(\n address _comptrollerProxy,\n address,\n bytes calldata _encodedSettings\n ) external override onlyPolicyManager {\n __updateList(_comptrollerProxy, _encodedSettings);\n }\n\n /// @notice Checks whether a particular condition passes the rule for a particular fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _investor The investor for which to check the rule\n /// @return isValid_ True if the rule passes\n function passesRule(address _comptrollerProxy, address _investor)\n public\n view\n returns (bool isValid_)\n {\n return isInList(_comptrollerProxy, _investor);\n }\n\n /// @notice Apply the rule with the specified parameters of a PolicyHook\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedArgs Encoded args with which to validate the rule\n /// @return isValid_ True if the rule passes\n function validateRule(\n address _comptrollerProxy,\n address,\n IPolicyManager.PolicyHook,\n bytes calldata _encodedArgs\n ) external override returns (bool isValid_) {\n (address buyer, , , ) = __decodeRuleArgs(_encodedArgs);\n\n return passesRule(_comptrollerProxy, buyer);\n }\n\n /// @dev Helper to update the investor whitelist by adding and/or removing addresses\n function __updateList(address _comptrollerProxy, bytes memory _settingsData) private {\n (address[] memory itemsToAdd, address[] memory itemsToRemove) = abi.decode(\n _settingsData,\n (address[], address[])\n );\n\n // If an address is in both add and remove arrays, they will not be in the final list.\n // We do not check for uniqueness between the two arrays for efficiency.\n if (itemsToAdd.length > 0) {\n __addToList(_comptrollerProxy, itemsToAdd);\n }\n if (itemsToRemove.length > 0) {\n __removeFromList(_comptrollerProxy, itemsToRemove);\n }\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/buy-shares/utils/PreBuySharesValidatePolicyBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../utils/PolicyBase.sol\";\n\n/// @title BuySharesPolicyMixin Contract\n/// @author Enzyme Council \n/// @notice A mixin contract for policies that only implement the PreBuyShares policy hook\nabstract contract PreBuySharesValidatePolicyBase is PolicyBase {\n /// @notice Gets the implemented PolicyHooks for a policy\n /// @return implementedHooks_ The implemented PolicyHooks\n function implementedHooks()\n external\n view\n override\n returns (IPolicyManager.PolicyHook[] memory implementedHooks_)\n {\n implementedHooks_ = new IPolicyManager.PolicyHook[](1);\n implementedHooks_[0] = IPolicyManager.PolicyHook.PreBuyShares;\n\n return implementedHooks_;\n }\n\n /// @notice Helper to decode rule arguments\n function __decodeRuleArgs(bytes memory _encodedArgs)\n internal\n pure\n returns (\n address buyer_,\n uint256 investmentAmount_,\n uint256 minSharesQuantity_,\n uint256 gav_\n )\n {\n return abi.decode(_encodedArgs, (address, uint256, uint256, uint256));\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/buy-shares/MinMaxInvestment.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\npragma experimental ABIEncoderV2;\n\nimport \"./utils/PreBuySharesValidatePolicyBase.sol\";\n\n/// @title MinMaxInvestment Contract\n/// @author Enzyme Council \n/// @notice A policy that restricts the amount of the fund's denomination asset that a user can\n/// send in a single call to buy shares in a fund\ncontract MinMaxInvestment is PreBuySharesValidatePolicyBase {\n event FundSettingsSet(\n address indexed comptrollerProxy,\n uint256 minInvestmentAmount,\n uint256 maxInvestmentAmount\n );\n\n struct FundSettings {\n uint256 minInvestmentAmount;\n uint256 maxInvestmentAmount;\n }\n\n mapping(address => FundSettings) private comptrollerProxyToFundSettings;\n\n constructor(address _policyManager) public PolicyBase(_policyManager) {}\n\n /// @notice Adds the initial policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function addFundSettings(address _comptrollerProxy, bytes calldata _encodedSettings)\n external\n override\n onlyPolicyManager\n {\n __setFundSettings(_comptrollerProxy, _encodedSettings);\n }\n\n /// @notice Provides a constant string identifier for a policy\n /// @return identifier_ The identifer string\n function identifier() external pure override returns (string memory identifier_) {\n return \"MIN_MAX_INVESTMENT\";\n }\n\n /// @notice Updates the policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function updateFundSettings(\n address _comptrollerProxy,\n address,\n bytes calldata _encodedSettings\n ) external override onlyPolicyManager {\n __setFundSettings(_comptrollerProxy, _encodedSettings);\n }\n\n /// @notice Checks whether a particular condition passes the rule for a particular fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _investmentAmount The investment amount for which to check the rule\n /// @return isValid_ True if the rule passes\n function passesRule(address _comptrollerProxy, uint256 _investmentAmount)\n public\n view\n returns (bool isValid_)\n {\n uint256 minInvestmentAmount = comptrollerProxyToFundSettings[_comptrollerProxy]\n .minInvestmentAmount;\n uint256 maxInvestmentAmount = comptrollerProxyToFundSettings[_comptrollerProxy]\n .maxInvestmentAmount;\n\n // Both minInvestmentAmount and maxInvestmentAmount can be 0 in order to close the fund\n // temporarily\n if (minInvestmentAmount == 0) {\n return _investmentAmount <= maxInvestmentAmount;\n } else if (maxInvestmentAmount == 0) {\n return _investmentAmount >= minInvestmentAmount;\n }\n return\n _investmentAmount >= minInvestmentAmount && _investmentAmount <= maxInvestmentAmount;\n }\n\n /// @notice Apply the rule with the specified parameters of a PolicyHook\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedArgs Encoded args with which to validate the rule\n /// @return isValid_ True if the rule passes\n function validateRule(\n address _comptrollerProxy,\n address,\n IPolicyManager.PolicyHook,\n bytes calldata _encodedArgs\n ) external override returns (bool isValid_) {\n (, uint256 investmentAmount, , ) = __decodeRuleArgs(_encodedArgs);\n\n return passesRule(_comptrollerProxy, investmentAmount);\n }\n\n /// @dev Helper to set the policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function __setFundSettings(address _comptrollerProxy, bytes memory _encodedSettings) private {\n (uint256 minInvestmentAmount, uint256 maxInvestmentAmount) = abi.decode(\n _encodedSettings,\n (uint256, uint256)\n );\n\n require(\n maxInvestmentAmount == 0 || minInvestmentAmount < maxInvestmentAmount,\n \"__setFundSettings: minInvestmentAmount must be less than maxInvestmentAmount\"\n );\n\n comptrollerProxyToFundSettings[_comptrollerProxy]\n .minInvestmentAmount = minInvestmentAmount;\n comptrollerProxyToFundSettings[_comptrollerProxy]\n .maxInvestmentAmount = maxInvestmentAmount;\n\n emit FundSettingsSet(_comptrollerProxy, minInvestmentAmount, maxInvestmentAmount);\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the min and max investment amount for a given fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @return fundSettings_ The fund settings\n function getFundSettings(address _comptrollerProxy)\n external\n view\n returns (FundSettings memory fundSettings_)\n {\n return comptrollerProxyToFundSettings[_comptrollerProxy];\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/buy-shares/BuySharesCallerWhitelist.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../utils/AddressListPolicyMixin.sol\";\nimport \"./utils/BuySharesSetupPolicyBase.sol\";\n\n/// @title BuySharesCallerWhitelist Contract\n/// @author Enzyme Council \n/// @notice A policy that only allows a configurable whitelist of buyShares callers for a fund\ncontract BuySharesCallerWhitelist is BuySharesSetupPolicyBase, AddressListPolicyMixin {\n constructor(address _policyManager) public PolicyBase(_policyManager) {}\n\n /// @notice Adds the initial policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function addFundSettings(address _comptrollerProxy, bytes calldata _encodedSettings)\n external\n override\n onlyPolicyManager\n {\n __updateList(_comptrollerProxy, _encodedSettings);\n }\n\n /// @notice Provides a constant string identifier for a policy\n /// @return identifier_ The identifer string\n function identifier() external pure override returns (string memory identifier_) {\n return \"BUY_SHARES_CALLER_WHITELIST\";\n }\n\n /// @notice Updates the policy settings for a fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedSettings Encoded settings to apply to a fund\n function updateFundSettings(\n address _comptrollerProxy,\n address,\n bytes calldata _encodedSettings\n ) external override onlyPolicyManager {\n __updateList(_comptrollerProxy, _encodedSettings);\n }\n\n /// @notice Checks whether a particular condition passes the rule for a particular fund\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _buySharesCaller The buyShares caller for which to check the rule\n /// @return isValid_ True if the rule passes\n function passesRule(address _comptrollerProxy, address _buySharesCaller)\n public\n view\n returns (bool isValid_)\n {\n return isInList(_comptrollerProxy, _buySharesCaller);\n }\n\n /// @notice Apply the rule with the specified parameters of a PolicyHook\n /// @param _comptrollerProxy The fund's ComptrollerProxy address\n /// @param _encodedArgs Encoded args with which to validate the rule\n /// @return isValid_ True if the rule passes\n function validateRule(\n address _comptrollerProxy,\n address,\n IPolicyManager.PolicyHook,\n bytes calldata _encodedArgs\n ) external override returns (bool isValid_) {\n (address caller, , ) = __decodeRuleArgs(_encodedArgs);\n\n return passesRule(_comptrollerProxy, caller);\n }\n\n /// @dev Helper to update the whitelist by adding and/or removing addresses\n function __updateList(address _comptrollerProxy, bytes memory _settingsData) private {\n (address[] memory itemsToAdd, address[] memory itemsToRemove) = abi.decode(\n _settingsData,\n (address[], address[])\n );\n\n // If an address is in both add and remove arrays, they will not be in the final list.\n // We do not check for uniqueness between the two arrays for efficiency.\n if (itemsToAdd.length > 0) {\n __addToList(_comptrollerProxy, itemsToAdd);\n }\n if (itemsToRemove.length > 0) {\n __removeFromList(_comptrollerProxy, itemsToRemove);\n }\n }\n}\n" }, "contracts/release/extensions/policy-manager/policies/buy-shares/utils/BuySharesSetupPolicyBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../utils/PolicyBase.sol\";\n\n/// @title BuySharesSetupPolicyBase Contract\n/// @author Enzyme Council \n/// @notice A mixin contract for policies that only implement the BuySharesSetup policy hook\nabstract contract BuySharesSetupPolicyBase is PolicyBase {\n /// @notice Gets the implemented PolicyHooks for a policy\n /// @return implementedHooks_ The implemented PolicyHooks\n function implementedHooks()\n external\n view\n override\n returns (IPolicyManager.PolicyHook[] memory implementedHooks_)\n {\n implementedHooks_ = new IPolicyManager.PolicyHook[](1);\n implementedHooks_[0] = IPolicyManager.PolicyHook.BuySharesSetup;\n\n return implementedHooks_;\n }\n\n /// @notice Helper to decode rule arguments\n function __decodeRuleArgs(bytes memory _encodedArgs)\n internal\n pure\n returns (\n address caller_,\n uint256[] memory investmentAmounts_,\n uint256 gav_\n )\n {\n return abi.decode(_encodedArgs, (address, uint256[], uint256));\n }\n}\n" }, "contracts/release/extensions/integration-manager/integrations/adapters/TrackedAssetsAdapter.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../../../core/fund/vault/VaultLib.sol\";\nimport \"../utils/AdapterBase.sol\";\n\n/// @title TrackedAssetsAdapter Contract\n/// @author Enzyme Council \n/// @notice Adapter to add tracked assets to a fund (useful e.g. to handle token airdrops)\ncontract TrackedAssetsAdapter is AdapterBase {\n constructor(address _integrationManager) public AdapterBase(_integrationManager) {}\n\n /// @notice Add multiple assets to the Vault's list of tracked assets\n /// @dev No need to perform any validation or implement any logic\n function addTrackedAssets(\n address,\n bytes calldata,\n bytes calldata\n ) external view {}\n\n /// @notice Provides a constant string identifier for an adapter\n /// @return identifier_ The identifer string\n function identifier() external pure override returns (string memory identifier_) {\n return \"TRACKED_ASSETS\";\n }\n\n /// @notice Parses the expected assets to receive from a call on integration\n /// @param _selector The function selector for the callOnIntegration\n /// @param _encodedCallArgs The encoded parameters for the callOnIntegration\n /// @return spendAssetsHandleType_ A type that dictates how to handle granting\n /// the adapter access to spend assets (`None` by default)\n /// @return spendAssets_ The assets to spend in the call\n /// @return spendAssetAmounts_ The max asset amounts to spend in the call\n /// @return incomingAssets_ The assets to receive in the call\n /// @return minIncomingAssetAmounts_ The min asset amounts to receive in the call\n function parseAssetsForMethod(bytes4 _selector, bytes calldata _encodedCallArgs)\n external\n view\n override\n returns (\n IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,\n address[] memory spendAssets_,\n uint256[] memory spendAssetAmounts_,\n address[] memory incomingAssets_,\n uint256[] memory minIncomingAssetAmounts_\n )\n {\n require(\n _selector == ADD_TRACKED_ASSETS_SELECTOR,\n \"parseAssetsForMethod: _selector invalid\"\n );\n\n incomingAssets_ = __decodeCallArgs(_encodedCallArgs);\n\n minIncomingAssetAmounts_ = new uint256[](incomingAssets_.length);\n for (uint256 i; i < minIncomingAssetAmounts_.length; i++) {\n minIncomingAssetAmounts_[i] = 1;\n }\n\n return (\n spendAssetsHandleType_,\n spendAssets_,\n spendAssetAmounts_,\n incomingAssets_,\n minIncomingAssetAmounts_\n );\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Helper to decode the encoded call arguments\n function __decodeCallArgs(bytes memory _encodedCallArgs)\n private\n pure\n returns (address[] memory incomingAssets_)\n {\n return abi.decode(_encodedCallArgs, (address[]));\n }\n}\n" }, "contracts/persistent/vault/VaultProxy.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"./utils/ProxiableVaultLib.sol\";\n\n/// @title VaultProxy Contract\n/// @author Enzyme Council \n/// @notice A proxy contract for all VaultProxy instances, slightly modified from EIP-1822\n/// @dev Adapted from the recommended implementation of a Proxy in EIP-1822, updated for solc 0.6.12,\n/// and using the EIP-1967 storage slot for the proxiable implementation.\n/// i.e., `bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)`, which is\n/// \"0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc\"\n/// See: https://eips.ethereum.org/EIPS/eip-1822\ncontract VaultProxy {\n constructor(bytes memory _constructData, address _vaultLib) public {\n // \"0x027b9570e9fedc1a80b937ae9a06861e5faef3992491af30b684a64b3fbec7a5\" corresponds to\n // `bytes32(keccak256('mln.proxiable.vaultlib'))`\n require(\n bytes32(0x027b9570e9fedc1a80b937ae9a06861e5faef3992491af30b684a64b3fbec7a5) ==\n ProxiableVaultLib(_vaultLib).proxiableUUID(),\n \"constructor: _vaultLib not compatible\"\n );\n\n assembly {\n // solium-disable-line\n sstore(0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc, _vaultLib)\n }\n\n (bool success, bytes memory returnData) = _vaultLib.delegatecall(_constructData); // solium-disable-line\n require(success, string(returnData));\n }\n\n fallback() external payable {\n assembly {\n // solium-disable-line\n let contractLogic := sload(\n 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc\n )\n calldatacopy(0x0, 0x0, calldatasize())\n let success := delegatecall(\n sub(gas(), 10000),\n contractLogic,\n 0x0,\n calldatasize(),\n 0,\n 0\n )\n let retSz := returndatasize()\n returndatacopy(0, 0, retSz)\n switch success\n case 0 {\n revert(0, retSz)\n }\n default {\n return(0, retSz)\n }\n }\n }\n}\n" }, "contracts/persistent/dispatcher/Dispatcher.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../utils/IMigrationHookHandler.sol\";\nimport \"../utils/IMigratableVault.sol\";\nimport \"../vault/VaultProxy.sol\";\nimport \"./IDispatcher.sol\";\n\n/// @title Dispatcher Contract\n/// @author Enzyme Council \n/// @notice The top-level contract linking multiple releases.\n/// It handles the deployment of new VaultProxy instances,\n/// and the regulation of fund migration from a previous release to the current one.\n/// It can also be referred to for access-control based on this contract's owner.\n/// @dev DO NOT EDIT CONTRACT\ncontract Dispatcher is IDispatcher {\n event CurrentFundDeployerSet(address prevFundDeployer, address nextFundDeployer);\n\n event MigrationCancelled(\n address indexed vaultProxy,\n address indexed prevFundDeployer,\n address indexed nextFundDeployer,\n address nextVaultAccessor,\n address nextVaultLib,\n uint256 executableTimestamp\n );\n\n event MigrationExecuted(\n address indexed vaultProxy,\n address indexed prevFundDeployer,\n address indexed nextFundDeployer,\n address nextVaultAccessor,\n address nextVaultLib,\n uint256 executableTimestamp\n );\n\n event MigrationSignaled(\n address indexed vaultProxy,\n address indexed prevFundDeployer,\n address indexed nextFundDeployer,\n address nextVaultAccessor,\n address nextVaultLib,\n uint256 executableTimestamp\n );\n\n event MigrationTimelockSet(uint256 prevTimelock, uint256 nextTimelock);\n\n event NominatedOwnerSet(address indexed nominatedOwner);\n\n event NominatedOwnerRemoved(address indexed nominatedOwner);\n\n event OwnershipTransferred(address indexed prevOwner, address indexed nextOwner);\n\n event MigrationInCancelHookFailed(\n bytes failureReturnData,\n address indexed vaultProxy,\n address indexed prevFundDeployer,\n address indexed nextFundDeployer,\n address nextVaultAccessor,\n address nextVaultLib\n );\n\n event MigrationOutHookFailed(\n bytes failureReturnData,\n IMigrationHookHandler.MigrationOutHook hook,\n address indexed vaultProxy,\n address indexed prevFundDeployer,\n address indexed nextFundDeployer,\n address nextVaultAccessor,\n address nextVaultLib\n );\n\n event SharesTokenSymbolSet(string _nextSymbol);\n\n event VaultProxyDeployed(\n address indexed fundDeployer,\n address indexed owner,\n address vaultProxy,\n address indexed vaultLib,\n address vaultAccessor,\n string fundName\n );\n\n struct MigrationRequest {\n address nextFundDeployer;\n address nextVaultAccessor;\n address nextVaultLib;\n uint256 executableTimestamp;\n }\n\n address private currentFundDeployer;\n address private nominatedOwner;\n address private owner;\n uint256 private migrationTimelock;\n string private sharesTokenSymbol;\n mapping(address => address) private vaultProxyToFundDeployer;\n mapping(address => MigrationRequest) private vaultProxyToMigrationRequest;\n\n modifier onlyCurrentFundDeployer() {\n require(\n msg.sender == currentFundDeployer,\n \"Only the current FundDeployer can call this function\"\n );\n _;\n }\n\n modifier onlyOwner() {\n require(msg.sender == owner, \"Only the contract owner can call this function\");\n _;\n }\n\n constructor() public {\n migrationTimelock = 2 days;\n owner = msg.sender;\n sharesTokenSymbol = \"ENZF\";\n }\n\n /////////////\n // GENERAL //\n /////////////\n\n /// @notice Sets a new `symbol` value for VaultProxy instances\n /// @param _nextSymbol The symbol value to set\n function setSharesTokenSymbol(string calldata _nextSymbol) external override onlyOwner {\n sharesTokenSymbol = _nextSymbol;\n\n emit SharesTokenSymbolSet(_nextSymbol);\n }\n\n ////////////////////\n // ACCESS CONTROL //\n ////////////////////\n\n /// @notice Claim ownership of the contract\n function claimOwnership() external override {\n address nextOwner = nominatedOwner;\n require(\n msg.sender == nextOwner,\n \"claimOwnership: Only the nominatedOwner can call this function\"\n );\n\n delete nominatedOwner;\n\n address prevOwner = owner;\n owner = nextOwner;\n\n emit OwnershipTransferred(prevOwner, nextOwner);\n }\n\n /// @notice Revoke the nomination of a new contract owner\n function removeNominatedOwner() external override onlyOwner {\n address removedNominatedOwner = nominatedOwner;\n require(\n removedNominatedOwner != address(0),\n \"removeNominatedOwner: There is no nominated owner\"\n );\n\n delete nominatedOwner;\n\n emit NominatedOwnerRemoved(removedNominatedOwner);\n }\n\n /// @notice Set a new FundDeployer for use within the contract\n /// @param _nextFundDeployer The address of the FundDeployer contract\n function setCurrentFundDeployer(address _nextFundDeployer) external override onlyOwner {\n require(\n _nextFundDeployer != address(0),\n \"setCurrentFundDeployer: _nextFundDeployer cannot be empty\"\n );\n require(\n __isContract(_nextFundDeployer),\n \"setCurrentFundDeployer: Non-contract _nextFundDeployer\"\n );\n\n address prevFundDeployer = currentFundDeployer;\n require(\n _nextFundDeployer != prevFundDeployer,\n \"setCurrentFundDeployer: _nextFundDeployer is already currentFundDeployer\"\n );\n\n currentFundDeployer = _nextFundDeployer;\n\n emit CurrentFundDeployerSet(prevFundDeployer, _nextFundDeployer);\n }\n\n /// @notice Nominate a new contract owner\n /// @param _nextNominatedOwner The account to nominate\n /// @dev Does not prohibit overwriting the current nominatedOwner\n function setNominatedOwner(address _nextNominatedOwner) external override onlyOwner {\n require(\n _nextNominatedOwner != address(0),\n \"setNominatedOwner: _nextNominatedOwner cannot be empty\"\n );\n require(\n _nextNominatedOwner != owner,\n \"setNominatedOwner: _nextNominatedOwner is already the owner\"\n );\n require(\n _nextNominatedOwner != nominatedOwner,\n \"setNominatedOwner: _nextNominatedOwner is already nominated\"\n );\n\n nominatedOwner = _nextNominatedOwner;\n\n emit NominatedOwnerSet(_nextNominatedOwner);\n }\n\n /// @dev Helper to check whether an address is a deployed contract\n function __isContract(address _who) private view returns (bool isContract_) {\n uint256 size;\n assembly {\n size := extcodesize(_who)\n }\n\n return size > 0;\n }\n\n ////////////////\n // DEPLOYMENT //\n ////////////////\n\n /// @notice Deploys a VaultProxy\n /// @param _vaultLib The VaultLib library with which to instantiate the VaultProxy\n /// @param _owner The account to set as the VaultProxy's owner\n /// @param _vaultAccessor The account to set as the VaultProxy's permissioned accessor\n /// @param _fundName The name of the fund\n /// @dev Input validation should be handled by the VaultProxy during deployment\n function deployVaultProxy(\n address _vaultLib,\n address _owner,\n address _vaultAccessor,\n string calldata _fundName\n ) external override onlyCurrentFundDeployer returns (address vaultProxy_) {\n require(__isContract(_vaultAccessor), \"deployVaultProxy: Non-contract _vaultAccessor\");\n\n bytes memory constructData = abi.encodeWithSelector(\n IMigratableVault.init.selector,\n _owner,\n _vaultAccessor,\n _fundName\n );\n vaultProxy_ = address(new VaultProxy(constructData, _vaultLib));\n\n address fundDeployer = msg.sender;\n vaultProxyToFundDeployer[vaultProxy_] = fundDeployer;\n\n emit VaultProxyDeployed(\n fundDeployer,\n _owner,\n vaultProxy_,\n _vaultLib,\n _vaultAccessor,\n _fundName\n );\n\n return vaultProxy_;\n }\n\n ////////////////\n // MIGRATIONS //\n ////////////////\n\n /// @notice Cancels a pending migration request\n /// @param _vaultProxy The VaultProxy contract for which to cancel the migration request\n /// @param _bypassFailure True if a failure in either migration hook should be ignored\n /// @dev Because this function must also be callable by a permissioned migrator, it has an\n /// extra migration hook to the nextFundDeployer for the case where cancelMigration()\n /// is called directly (rather than via the nextFundDeployer).\n function cancelMigration(address _vaultProxy, bool _bypassFailure) external override {\n MigrationRequest memory request = vaultProxyToMigrationRequest[_vaultProxy];\n address nextFundDeployer = request.nextFundDeployer;\n require(nextFundDeployer != address(0), \"cancelMigration: No migration request exists\");\n\n // TODO: confirm that if canMigrate() does not exist but the caller is a valid FundDeployer, this still works.\n require(\n msg.sender == nextFundDeployer || IMigratableVault(_vaultProxy).canMigrate(msg.sender),\n \"cancelMigration: Not an allowed caller\"\n );\n\n address prevFundDeployer = vaultProxyToFundDeployer[_vaultProxy];\n address nextVaultAccessor = request.nextVaultAccessor;\n address nextVaultLib = request.nextVaultLib;\n uint256 executableTimestamp = request.executableTimestamp;\n\n delete vaultProxyToMigrationRequest[_vaultProxy];\n\n __invokeMigrationOutHook(\n IMigrationHookHandler.MigrationOutHook.PostCancel,\n _vaultProxy,\n prevFundDeployer,\n nextFundDeployer,\n nextVaultAccessor,\n nextVaultLib,\n _bypassFailure\n );\n __invokeMigrationInCancelHook(\n _vaultProxy,\n prevFundDeployer,\n nextFundDeployer,\n nextVaultAccessor,\n nextVaultLib,\n _bypassFailure\n );\n\n emit MigrationCancelled(\n _vaultProxy,\n prevFundDeployer,\n nextFundDeployer,\n nextVaultAccessor,\n nextVaultLib,\n executableTimestamp\n );\n }\n\n /// @notice Executes a pending migration request\n /// @param _vaultProxy The VaultProxy contract for which to execute the migration request\n /// @param _bypassFailure True if a failure in either migration hook should be ignored\n function executeMigration(address _vaultProxy, bool _bypassFailure) external override {\n MigrationRequest memory request = vaultProxyToMigrationRequest[_vaultProxy];\n address nextFundDeployer = request.nextFundDeployer;\n require(\n nextFundDeployer != address(0),\n \"executeMigration: No migration request exists for _vaultProxy\"\n );\n require(\n msg.sender == nextFundDeployer,\n \"executeMigration: Only the target FundDeployer can call this function\"\n );\n require(\n nextFundDeployer == currentFundDeployer,\n \"executeMigration: The target FundDeployer is no longer the current FundDeployer\"\n );\n uint256 executableTimestamp = request.executableTimestamp;\n require(\n block.timestamp >= executableTimestamp,\n \"executeMigration: The migration timelock has not elapsed\"\n );\n\n address prevFundDeployer = vaultProxyToFundDeployer[_vaultProxy];\n address nextVaultAccessor = request.nextVaultAccessor;\n address nextVaultLib = request.nextVaultLib;\n\n __invokeMigrationOutHook(\n IMigrationHookHandler.MigrationOutHook.PreMigrate,\n _vaultProxy,\n prevFundDeployer,\n nextFundDeployer,\n nextVaultAccessor,\n nextVaultLib,\n _bypassFailure\n );\n\n // Upgrade the VaultProxy to a new VaultLib and update the accessor via the new VaultLib\n IMigratableVault(_vaultProxy).setVaultLib(nextVaultLib);\n IMigratableVault(_vaultProxy).setAccessor(nextVaultAccessor);\n\n // Update the FundDeployer that migrated the VaultProxy\n vaultProxyToFundDeployer[_vaultProxy] = nextFundDeployer;\n\n // Remove the migration request\n delete vaultProxyToMigrationRequest[_vaultProxy];\n\n __invokeMigrationOutHook(\n IMigrationHookHandler.MigrationOutHook.PostMigrate,\n _vaultProxy,\n prevFundDeployer,\n nextFundDeployer,\n nextVaultAccessor,\n nextVaultLib,\n _bypassFailure\n );\n\n emit MigrationExecuted(\n _vaultProxy,\n prevFundDeployer,\n nextFundDeployer,\n nextVaultAccessor,\n nextVaultLib,\n executableTimestamp\n );\n }\n\n /// @notice Sets a new migration timelock\n /// @param _nextTimelock The number of seconds for the new timelock\n function setMigrationTimelock(uint256 _nextTimelock) external override onlyOwner {\n uint256 prevTimelock = migrationTimelock;\n require(\n _nextTimelock != prevTimelock,\n \"setMigrationTimelock: _nextTimelock is the current timelock\"\n );\n\n migrationTimelock = _nextTimelock;\n\n emit MigrationTimelockSet(prevTimelock, _nextTimelock);\n }\n\n /// @notice Signals a migration by creating a migration request\n /// @param _vaultProxy The VaultProxy contract for which to signal migration\n /// @param _nextVaultAccessor The account that will be the next `accessor` on the VaultProxy\n /// @param _nextVaultLib The next VaultLib library contract address to set on the VaultProxy\n /// @param _bypassFailure True if a failure in either migration hook should be ignored\n function signalMigration(\n address _vaultProxy,\n address _nextVaultAccessor,\n address _nextVaultLib,\n bool _bypassFailure\n ) external override onlyCurrentFundDeployer {\n require(\n __isContract(_nextVaultAccessor),\n \"signalMigration: Non-contract _nextVaultAccessor\"\n );\n\n address prevFundDeployer = vaultProxyToFundDeployer[_vaultProxy];\n require(prevFundDeployer != address(0), \"signalMigration: _vaultProxy does not exist\");\n\n address nextFundDeployer = msg.sender;\n require(\n nextFundDeployer != prevFundDeployer,\n \"signalMigration: Can only migrate to a new FundDeployer\"\n );\n\n __invokeMigrationOutHook(\n IMigrationHookHandler.MigrationOutHook.PreSignal,\n _vaultProxy,\n prevFundDeployer,\n nextFundDeployer,\n _nextVaultAccessor,\n _nextVaultLib,\n _bypassFailure\n );\n\n uint256 executableTimestamp = block.timestamp + migrationTimelock;\n vaultProxyToMigrationRequest[_vaultProxy] = MigrationRequest({\n nextFundDeployer: nextFundDeployer,\n nextVaultAccessor: _nextVaultAccessor,\n nextVaultLib: _nextVaultLib,\n executableTimestamp: executableTimestamp\n });\n\n __invokeMigrationOutHook(\n IMigrationHookHandler.MigrationOutHook.PostSignal,\n _vaultProxy,\n prevFundDeployer,\n nextFundDeployer,\n _nextVaultAccessor,\n _nextVaultLib,\n _bypassFailure\n );\n\n emit MigrationSignaled(\n _vaultProxy,\n prevFundDeployer,\n nextFundDeployer,\n _nextVaultAccessor,\n _nextVaultLib,\n executableTimestamp\n );\n }\n\n /// @dev Helper to invoke a MigrationInCancelHook on the next FundDeployer being \"migrated in\" to,\n /// which can optionally be implemented on the FundDeployer\n function __invokeMigrationInCancelHook(\n address _vaultProxy,\n address _prevFundDeployer,\n address _nextFundDeployer,\n address _nextVaultAccessor,\n address _nextVaultLib,\n bool _bypassFailure\n ) private {\n (bool success, bytes memory returnData) = _nextFundDeployer.call(\n abi.encodeWithSelector(\n IMigrationHookHandler.invokeMigrationInCancelHook.selector,\n _vaultProxy,\n _prevFundDeployer,\n _nextVaultAccessor,\n _nextVaultLib\n )\n );\n if (!success) {\n require(\n _bypassFailure,\n string(abi.encodePacked(\"MigrationOutCancelHook: \", returnData))\n );\n\n emit MigrationInCancelHookFailed(\n returnData,\n _vaultProxy,\n _prevFundDeployer,\n _nextFundDeployer,\n _nextVaultAccessor,\n _nextVaultLib\n );\n }\n }\n\n /// @dev Helper to invoke a IMigrationHookHandler.MigrationOutHook on the previous FundDeployer being \"migrated out\" of,\n /// which can optionally be implemented on the FundDeployer\n function __invokeMigrationOutHook(\n IMigrationHookHandler.MigrationOutHook _hook,\n address _vaultProxy,\n address _prevFundDeployer,\n address _nextFundDeployer,\n address _nextVaultAccessor,\n address _nextVaultLib,\n bool _bypassFailure\n ) private {\n (bool success, bytes memory returnData) = _prevFundDeployer.call(\n abi.encodeWithSelector(\n IMigrationHookHandler.invokeMigrationOutHook.selector,\n _hook,\n _vaultProxy,\n _nextFundDeployer,\n _nextVaultAccessor,\n _nextVaultLib\n )\n );\n if (!success) {\n require(\n _bypassFailure,\n string(abi.encodePacked(__migrationOutHookFailureReasonPrefix(_hook), returnData))\n );\n\n emit MigrationOutHookFailed(\n returnData,\n _hook,\n _vaultProxy,\n _prevFundDeployer,\n _nextFundDeployer,\n _nextVaultAccessor,\n _nextVaultLib\n );\n }\n }\n\n /// @dev Helper to return a revert reason string prefix for a given MigrationOutHook\n function __migrationOutHookFailureReasonPrefix(IMigrationHookHandler.MigrationOutHook _hook)\n private\n pure\n returns (string memory failureReasonPrefix_)\n {\n if (_hook == IMigrationHookHandler.MigrationOutHook.PreSignal) {\n return \"MigrationOutHook.PreSignal: \";\n }\n if (_hook == IMigrationHookHandler.MigrationOutHook.PostSignal) {\n return \"MigrationOutHook.PostSignal: \";\n }\n if (_hook == IMigrationHookHandler.MigrationOutHook.PreMigrate) {\n return \"MigrationOutHook.PreMigrate: \";\n }\n if (_hook == IMigrationHookHandler.MigrationOutHook.PostMigrate) {\n return \"MigrationOutHook.PostMigrate: \";\n }\n if (_hook == IMigrationHookHandler.MigrationOutHook.PostCancel) {\n return \"MigrationOutHook.PostCancel: \";\n }\n\n return \"\";\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n // Provides several potentially helpful getters that are not strictly necessary\n\n /// @notice Gets the current FundDeployer that is allowed to deploy and migrate funds\n /// @return currentFundDeployer_ The current FundDeployer contract address\n function getCurrentFundDeployer()\n external\n view\n override\n returns (address currentFundDeployer_)\n {\n return currentFundDeployer;\n }\n\n /// @notice Gets the FundDeployer with which a given VaultProxy is associated\n /// @param _vaultProxy The VaultProxy instance\n /// @return fundDeployer_ The FundDeployer contract address\n function getFundDeployerForVaultProxy(address _vaultProxy)\n external\n view\n override\n returns (address fundDeployer_)\n {\n return vaultProxyToFundDeployer[_vaultProxy];\n }\n\n /// @notice Gets the details of a pending migration request for a given VaultProxy\n /// @param _vaultProxy The VaultProxy instance\n /// @return nextFundDeployer_ The FundDeployer contract address from which the migration\n /// request was made\n /// @return nextVaultAccessor_ The account that will be the next `accessor` on the VaultProxy\n /// @return nextVaultLib_ The next VaultLib library contract address to set on the VaultProxy\n /// @return executableTimestamp_ The timestamp at which the migration request can be executed\n function getMigrationRequestDetailsForVaultProxy(address _vaultProxy)\n external\n view\n override\n returns (\n address nextFundDeployer_,\n address nextVaultAccessor_,\n address nextVaultLib_,\n uint256 executableTimestamp_\n )\n {\n MigrationRequest memory r = vaultProxyToMigrationRequest[_vaultProxy];\n if (r.executableTimestamp > 0) {\n return (\n r.nextFundDeployer,\n r.nextVaultAccessor,\n r.nextVaultLib,\n r.executableTimestamp\n );\n }\n }\n\n /// @notice Gets the amount of time that must pass between signaling and executing a migration\n /// @return migrationTimelock_ The timelock value (in seconds)\n function getMigrationTimelock() external view override returns (uint256 migrationTimelock_) {\n return migrationTimelock;\n }\n\n /// @notice Gets the account that is nominated to be the next owner of this contract\n /// @return nominatedOwner_ The account that is nominated to be the owner\n function getNominatedOwner() external view override returns (address nominatedOwner_) {\n return nominatedOwner;\n }\n\n /// @notice Gets the owner of this contract\n /// @return owner_ The account that is the owner\n function getOwner() external view override returns (address owner_) {\n return owner;\n }\n\n /// @notice Gets the shares token `symbol` value for use in VaultProxy instances\n /// @return sharesTokenSymbol_ The `symbol` value\n function getSharesTokenSymbol()\n external\n view\n override\n returns (string memory sharesTokenSymbol_)\n {\n return sharesTokenSymbol;\n }\n\n /// @notice Gets the time remaining until the migration request of a given VaultProxy can be executed\n /// @param _vaultProxy The VaultProxy instance\n /// @return secondsRemaining_ The number of seconds remaining on the timelock\n function getTimelockRemainingForMigrationRequest(address _vaultProxy)\n external\n view\n override\n returns (uint256 secondsRemaining_)\n {\n uint256 executableTimestamp = vaultProxyToMigrationRequest[_vaultProxy]\n .executableTimestamp;\n if (executableTimestamp == 0) {\n return 0;\n }\n\n if (block.timestamp >= executableTimestamp) {\n return 0;\n }\n\n return executableTimestamp - block.timestamp;\n }\n\n /// @notice Checks whether a migration request that is executable exists for a given VaultProxy\n /// @param _vaultProxy The VaultProxy instance\n /// @return hasExecutableRequest_ True if a migration request exists and is executable\n function hasExecutableMigrationRequest(address _vaultProxy)\n external\n view\n override\n returns (bool hasExecutableRequest_)\n {\n uint256 executableTimestamp = vaultProxyToMigrationRequest[_vaultProxy]\n .executableTimestamp;\n\n return executableTimestamp > 0 && block.timestamp >= executableTimestamp;\n }\n\n /// @notice Checks whether a migration request exists for a given VaultProxy\n /// @param _vaultProxy The VaultProxy instance\n /// @return hasMigrationRequest_ True if a migration request exists\n function hasMigrationRequest(address _vaultProxy)\n external\n view\n override\n returns (bool hasMigrationRequest_)\n {\n return vaultProxyToMigrationRequest[_vaultProxy].executableTimestamp > 0;\n }\n}\n" }, "contracts/mocks/MockVaultLib.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../persistent/vault/VaultLibBaseCore.sol\";\n\n/// @title MockVaultLib Contract\n/// @author Enzyme Council \n/// @notice A mock VaultLib implementation that only extends VaultLibBaseCore\ncontract MockVaultLib is VaultLibBaseCore {\n function getAccessor() external view returns (address) {\n return accessor;\n }\n\n function getCreator() external view returns (address) {\n return creator;\n }\n\n function getMigrator() external view returns (address) {\n return migrator;\n }\n\n function getOwner() external view returns (address) {\n return owner;\n }\n}\n" }, "contracts/release/interfaces/ICERC20.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity ^0.6.12;\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\n\n/// @title ICERC20 Interface\n/// @author Enzyme Council \n/// @notice Minimal interface for interactions with Compound tokens (cTokens)\ninterface ICERC20 is IERC20 {\n function decimals() external view returns (uint8);\n\n function mint(uint256) external returns (uint256);\n\n function redeem(uint256) external returns (uint256);\n\n function exchangeRateStored() external view returns (uint256);\n\n function underlying() external returns (address);\n}\n" }, "contracts/release/infrastructure/price-feeds/derivatives/feeds/CompoundPriceFeed.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../../../interfaces/ICERC20.sol\";\nimport \"../../../utils/DispatcherOwnerMixin.sol\";\nimport \"../IDerivativePriceFeed.sol\";\n\n/// @title CompoundPriceFeed Contract\n/// @author Enzyme Council \n/// @notice Price source oracle for Compound Tokens (cTokens)\ncontract CompoundPriceFeed is IDerivativePriceFeed, DispatcherOwnerMixin {\n using SafeMath for uint256;\n\n event CTokenAdded(address indexed cToken, address indexed token);\n\n uint256 private constant CTOKEN_RATE_DIVISOR = 10**18;\n\n mapping(address => address) private cTokenToToken;\n\n constructor(\n address _dispatcher,\n address _weth,\n address _ceth,\n address[] memory cERC20Tokens\n ) public DispatcherOwnerMixin(_dispatcher) {\n // Set cEth\n cTokenToToken[_ceth] = _weth;\n emit CTokenAdded(_ceth, _weth);\n\n // Set any other cTokens\n if (cERC20Tokens.length > 0) {\n __addCERC20Tokens(cERC20Tokens);\n }\n }\n\n /// @notice Converts a given amount of a derivative to its underlying asset values\n /// @param _derivative The derivative to convert\n /// @param _derivativeAmount The amount of the derivative to convert\n /// @return underlyings_ The underlying assets for the _derivative\n /// @return underlyingAmounts_ The amount of each underlying asset for the equivalent derivative amount\n function calcUnderlyingValues(address _derivative, uint256 _derivativeAmount)\n external\n override\n returns (address[] memory underlyings_, uint256[] memory underlyingAmounts_)\n {\n underlyings_ = new address[](1);\n underlyings_[0] = cTokenToToken[_derivative];\n require(underlyings_[0] != address(0), \"calcUnderlyingValues: Unsupported derivative\");\n\n underlyingAmounts_ = new uint256[](1);\n // Returns a rate scaled to 10^18\n underlyingAmounts_[0] = _derivativeAmount\n .mul(ICERC20(_derivative).exchangeRateStored())\n .div(CTOKEN_RATE_DIVISOR);\n\n return (underlyings_, underlyingAmounts_);\n }\n\n /// @notice Checks if an asset is supported by the price feed\n /// @param _asset The asset to check\n /// @return isSupported_ True if the asset is supported\n function isSupportedAsset(address _asset) external view override returns (bool isSupported_) {\n return cTokenToToken[_asset] != address(0);\n }\n\n //////////////////////\n // CTOKENS REGISTRY //\n //////////////////////\n\n /// @notice Adds cTokens to the price feed\n /// @param _cTokens cTokens to add\n /// @dev Only allows CERC20 tokens. CEther is set in the constructor.\n function addCTokens(address[] calldata _cTokens) external onlyDispatcherOwner {\n __addCERC20Tokens(_cTokens);\n }\n\n /// @dev Helper to add cTokens\n function __addCERC20Tokens(address[] memory _cTokens) private {\n require(_cTokens.length > 0, \"__addCTokens: Empty _cTokens\");\n\n for (uint256 i; i < _cTokens.length; i++) {\n require(cTokenToToken[_cTokens[i]] == address(0), \"__addCTokens: Value already set\");\n\n address token = ICERC20(_cTokens[i]).underlying();\n cTokenToToken[_cTokens[i]] = token;\n\n emit CTokenAdded(_cTokens[i], token);\n }\n }\n\n ////////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Returns the underlying asset of a given cToken\n /// @param _cToken The cToken for which to get the underlying asset\n /// @return token_ The underlying token\n function getTokenFromCToken(address _cToken) public view returns (address token_) {\n return cTokenToToken[_cToken];\n }\n}\n" }, "contracts/release/extensions/integration-manager/integrations/adapters/CompoundAdapter.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../../../infrastructure/price-feeds/derivatives/feeds/CompoundPriceFeed.sol\";\nimport \"../../../../interfaces/ICERC20.sol\";\nimport \"../../../../interfaces/ICEther.sol\";\nimport \"../../../../interfaces/IWETH.sol\";\nimport \"../utils/AdapterBase.sol\";\n\n/// @title CompoundAdapter Contract\n/// @author Enzyme Council \n/// @notice Adapter for Compound \ncontract CompoundAdapter is AdapterBase {\n address private immutable COMPOUND_PRICE_FEED;\n address private immutable WETH_TOKEN;\n\n constructor(\n address _integrationManager,\n address _compoundPriceFeed,\n address _wethToken\n ) public AdapterBase(_integrationManager) {\n COMPOUND_PRICE_FEED = _compoundPriceFeed;\n WETH_TOKEN = _wethToken;\n }\n\n /// @dev Needed to receive ETH during cEther lend/redeem\n receive() external payable {}\n\n /// @notice Provides a constant string identifier for an adapter\n /// @return identifier_ An identifier string\n function identifier() external pure override returns (string memory identifier_) {\n return \"COMPOUND\";\n }\n\n /// @notice Parses the expected assets to receive from a call on integration\n /// @param _selector The function selector for the callOnIntegration\n /// @param _encodedCallArgs The encoded parameters for the callOnIntegration\n /// @return spendAssetsHandleType_ A type that dictates how to handle granting\n /// the adapter access to spend assets (`None` by default)\n /// @return spendAssets_ The assets to spend in the call\n /// @return spendAssetAmounts_ The max asset amounts to spend in the call\n /// @return incomingAssets_ The assets to receive in the call\n /// @return minIncomingAssetAmounts_ The min asset amounts to receive in the call\n function parseAssetsForMethod(bytes4 _selector, bytes calldata _encodedCallArgs)\n external\n view\n override\n returns (\n IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,\n address[] memory spendAssets_,\n uint256[] memory spendAssetAmounts_,\n address[] memory incomingAssets_,\n uint256[] memory minIncomingAssetAmounts_\n )\n {\n if (_selector == LEND_SELECTOR) {\n (address cToken, uint256 tokenAmount, uint256 minCTokenAmount) = __decodeCallArgs(\n _encodedCallArgs\n );\n address token = CompoundPriceFeed(COMPOUND_PRICE_FEED).getTokenFromCToken(cToken);\n require(token != address(0), \"parseAssetsForMethod: Unsupported cToken\");\n\n spendAssets_ = new address[](1);\n spendAssets_[0] = token;\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = tokenAmount;\n\n incomingAssets_ = new address[](1);\n incomingAssets_[0] = cToken;\n minIncomingAssetAmounts_ = new uint256[](1);\n minIncomingAssetAmounts_[0] = minCTokenAmount;\n } else if (_selector == REDEEM_SELECTOR) {\n (address cToken, uint256 cTokenAmount, uint256 minTokenAmount) = __decodeCallArgs(\n _encodedCallArgs\n );\n address token = CompoundPriceFeed(COMPOUND_PRICE_FEED).getTokenFromCToken(cToken);\n require(token != address(0), \"parseAssetsForMethod: Unsupported cToken\");\n\n spendAssets_ = new address[](1);\n spendAssets_[0] = cToken;\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = cTokenAmount;\n\n incomingAssets_ = new address[](1);\n incomingAssets_[0] = token;\n minIncomingAssetAmounts_ = new uint256[](1);\n minIncomingAssetAmounts_[0] = minTokenAmount;\n } else {\n revert(\"parseAssetsForMethod: _selector invalid\");\n }\n\n return (\n IIntegrationManager.SpendAssetsHandleType.Transfer,\n spendAssets_,\n spendAssetAmounts_,\n incomingAssets_,\n minIncomingAssetAmounts_\n );\n }\n\n /// @notice Lends an amount of a token to Compound\n /// @param _vaultProxy The VaultProxy of the calling fund\n /// @param _encodedAssetTransferArgs Encoded args for expected assets to spend and receive\n function lend(\n address _vaultProxy,\n bytes calldata,\n bytes calldata _encodedAssetTransferArgs\n )\n external\n onlyIntegrationManager\n fundAssetsTransferHandler(_vaultProxy, _encodedAssetTransferArgs)\n {\n // More efficient to parse all from _encodedAssetTransferArgs\n (\n ,\n address[] memory spendAssets,\n uint256[] memory spendAssetAmounts,\n address[] memory incomingAssets\n ) = __decodeEncodedAssetTransferArgs(_encodedAssetTransferArgs);\n\n if (spendAssets[0] == WETH_TOKEN) {\n IWETH(WETH_TOKEN).withdraw(spendAssetAmounts[0]);\n ICEther(incomingAssets[0]).mint{value: spendAssetAmounts[0]}();\n } else {\n __approveMaxAsNeeded(spendAssets[0], incomingAssets[0], spendAssetAmounts[0]);\n ICERC20(incomingAssets[0]).mint(spendAssetAmounts[0]);\n }\n }\n\n /// @notice Redeems an amount of cTokens from Compound\n /// @param _vaultProxy The VaultProxy of the calling fund\n /// @param _encodedAssetTransferArgs Encoded args for expected assets to spend and receive\n function redeem(\n address _vaultProxy,\n bytes calldata,\n bytes calldata _encodedAssetTransferArgs\n )\n external\n onlyIntegrationManager\n fundAssetsTransferHandler(_vaultProxy, _encodedAssetTransferArgs)\n {\n // More efficient to parse all from _encodedAssetTransferArgs\n (\n ,\n address[] memory spendAssets,\n uint256[] memory spendAssetAmounts,\n address[] memory incomingAssets\n ) = __decodeEncodedAssetTransferArgs(_encodedAssetTransferArgs);\n\n ICERC20(spendAssets[0]).redeem(spendAssetAmounts[0]);\n\n if (incomingAssets[0] == WETH_TOKEN) {\n IWETH(payable(WETH_TOKEN)).deposit{value: payable(address(this)).balance}();\n }\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Helper to decode callArgs for lend and redeem\n function __decodeCallArgs(bytes memory _encodedCallArgs)\n private\n pure\n returns (\n address cToken_,\n uint256 outgoingAssetAmount_,\n uint256 minIncomingAssetAmount_\n )\n {\n return abi.decode(_encodedCallArgs, (address, uint256, uint256));\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `COMPOUND_PRICE_FEED` variable\n /// @return compoundPriceFeed_ The `COMPOUND_PRICE_FEED` variable value\n function getCompoundPriceFeed() external view returns (address compoundPriceFeed_) {\n return COMPOUND_PRICE_FEED;\n }\n\n /// @notice Gets the `WETH_TOKEN` variable\n /// @return wethToken_ The `WETH_TOKEN` variable value\n function getWethToken() external view returns (address wethToken_) {\n return WETH_TOKEN;\n }\n}\n" }, "contracts/release/interfaces/ICEther.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity ^0.6.12;\n\n/// @title ICEther Interface\n/// @author Enzyme Council \n/// @notice Minimal interface for interactions with Compound Ether\ninterface ICEther {\n function mint() external payable;\n}\n" }, "contracts/release/interfaces/IChai.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\n\n/// @title IChai Interface\n/// @author Enzyme Council \n/// @notice Minimal interface for our interactions with the Chai contract\ninterface IChai is IERC20 {\n function exit(address, uint256) external;\n\n function join(address, uint256) external;\n}\n" }, "contracts/release/extensions/integration-manager/integrations/adapters/ChaiAdapter.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../../../interfaces/IChai.sol\";\nimport \"../utils/AdapterBase.sol\";\n\n/// @title ChaiAdapter Contract\n/// @author Enzyme Council \n/// @notice Adapter for Chai \ncontract ChaiAdapter is AdapterBase {\n address private immutable CHAI;\n address private immutable DAI;\n\n constructor(\n address _integrationManager,\n address _chai,\n address _dai\n ) public AdapterBase(_integrationManager) {\n CHAI = _chai;\n DAI = _dai;\n }\n\n /// @notice Provides a constant string identifier for an adapter\n /// @return identifier_ An identifier string\n function identifier() external pure override returns (string memory identifier_) {\n return \"CHAI\";\n }\n\n /// @notice Parses the expected assets to receive from a call on integration\n /// @param _selector The function selector for the callOnIntegration\n /// @param _encodedCallArgs The encoded parameters for the callOnIntegration\n /// @return spendAssetsHandleType_ A type that dictates how to handle granting\n /// the adapter access to spend assets (`None` by default)\n /// @return spendAssets_ The assets to spend in the call\n /// @return spendAssetAmounts_ The max asset amounts to spend in the call\n /// @return incomingAssets_ The assets to receive in the call\n /// @return minIncomingAssetAmounts_ The min asset amounts to receive in the call\n function parseAssetsForMethod(bytes4 _selector, bytes calldata _encodedCallArgs)\n external\n view\n override\n returns (\n IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,\n address[] memory spendAssets_,\n uint256[] memory spendAssetAmounts_,\n address[] memory incomingAssets_,\n uint256[] memory minIncomingAssetAmounts_\n )\n {\n if (_selector == LEND_SELECTOR) {\n (uint256 daiAmount, uint256 minChaiAmount) = __decodeCallArgs(_encodedCallArgs);\n\n spendAssets_ = new address[](1);\n spendAssets_[0] = DAI;\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = daiAmount;\n\n incomingAssets_ = new address[](1);\n incomingAssets_[0] = CHAI;\n minIncomingAssetAmounts_ = new uint256[](1);\n minIncomingAssetAmounts_[0] = minChaiAmount;\n } else if (_selector == REDEEM_SELECTOR) {\n (uint256 chaiAmount, uint256 minDaiAmount) = __decodeCallArgs(_encodedCallArgs);\n\n spendAssets_ = new address[](1);\n spendAssets_[0] = CHAI;\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = chaiAmount;\n\n incomingAssets_ = new address[](1);\n incomingAssets_[0] = DAI;\n minIncomingAssetAmounts_ = new uint256[](1);\n minIncomingAssetAmounts_[0] = minDaiAmount;\n } else {\n revert(\"parseAssetsForMethod: _selector invalid\");\n }\n\n return (\n IIntegrationManager.SpendAssetsHandleType.Transfer,\n spendAssets_,\n spendAssetAmounts_,\n incomingAssets_,\n minIncomingAssetAmounts_\n );\n }\n\n /// @notice Lend Dai for Chai\n /// @param _vaultProxy The VaultProxy of the calling fund\n /// @param _encodedCallArgs Encoded order parameters\n /// @param _encodedAssetTransferArgs Encoded args for expected assets to spend and receive\n function lend(\n address _vaultProxy,\n bytes calldata _encodedCallArgs,\n bytes calldata _encodedAssetTransferArgs\n )\n external\n onlyIntegrationManager\n fundAssetsTransferHandler(_vaultProxy, _encodedAssetTransferArgs)\n {\n (uint256 daiAmount, ) = __decodeCallArgs(_encodedCallArgs);\n\n __approveMaxAsNeeded(DAI, CHAI, daiAmount);\n\n // Execute Lend on Chai\n // Chai.join allows specifying the vaultProxy as the destination of Chai tokens\n IChai(CHAI).join(_vaultProxy, daiAmount);\n }\n\n /// @notice Redeem Chai for Dai\n /// @param _vaultProxy The VaultProxy of the calling fund\n /// @param _encodedCallArgs Encoded order parameters\n /// @param _encodedAssetTransferArgs Encoded args for expected assets to spend and receive\n function redeem(\n address _vaultProxy,\n bytes calldata _encodedCallArgs,\n bytes calldata _encodedAssetTransferArgs\n )\n external\n onlyIntegrationManager\n fundAssetsTransferHandler(_vaultProxy, _encodedAssetTransferArgs)\n {\n (uint256 chaiAmount, ) = __decodeCallArgs(_encodedCallArgs);\n\n // Execute redeem on Chai\n // Chai.exit sends Dai back to the adapter\n IChai(CHAI).exit(address(this), chaiAmount);\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Helper to decode the encoded call arguments\n function __decodeCallArgs(bytes memory _encodedCallArgs)\n private\n pure\n returns (uint256 outgoingAmount_, uint256 minIncomingAmount_)\n {\n return abi.decode(_encodedCallArgs, (uint256, uint256));\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `CHAI` variable value\n /// @return chai_ The `CHAI` variable value\n function getChai() external view returns (address chai_) {\n return CHAI;\n }\n\n /// @notice Gets the `DAI` variable value\n /// @return dai_ The `DAI` variable value\n function getDai() external view returns (address dai_) {\n return DAI;\n }\n}\n" }, "contracts/mocks/integratees/compound/MockCTokenBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20Burnable.sol\";\nimport \"../../prices/CentralizedRateProvider.sol\";\nimport \"../../utils/SwapperBase.sol\";\n\ncontract MockCTokenBase is ERC20, SwapperBase, Ownable {\n address internal immutable TOKEN;\n address internal immutable CENTRALIZED_RATE_PROVIDER;\n\n uint256 internal rate;\n\n mapping(address => mapping(address => uint256)) internal _allowances;\n\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals,\n address _token,\n address _centralizedRateProvider,\n uint256 _initialRate\n ) public ERC20(_name, _symbol) {\n _setupDecimals(_decimals);\n TOKEN = _token;\n CENTRALIZED_RATE_PROVIDER = _centralizedRateProvider;\n rate = _initialRate;\n }\n\n function approve(address _spender, uint256 _amount) public virtual override returns (bool) {\n _allowances[msg.sender][_spender] = _amount;\n return true;\n }\n\n /// @dev Overriden `allowance` function, give the integratee infinite approval by default\n function allowance(address _owner, address _spender) public view override returns (uint256) {\n if (_spender == address(this) || _owner == _spender) {\n return 2**256 - 1;\n } else {\n return _allowances[_owner][_spender];\n }\n }\n\n /// @dev Necessary as this contract doesn't directly inherit from MockToken\n function mintFor(address _who, uint256 _amount) external onlyOwner {\n _mint(_who, _amount);\n }\n\n /// @dev Necessary to allow updates on persistent deployments (e.g Kovan)\n function setRate(uint256 _rate) public onlyOwner {\n rate = _rate;\n }\n\n function transferFrom(\n address _sender,\n address _recipient,\n uint256 _amount\n ) public virtual override returns (bool) {\n _transfer(_sender, _recipient, _amount);\n return true;\n }\n\n // INTERNAL FUNCTIONS\n\n /// @dev Calculates the cTokenAmount given a tokenAmount\n /// Makes use of a inverse rate with the CentralizedRateProvider as a derivative can't be used as quoteAsset\n function __calcCTokenAmount(uint256 _tokenAmount) internal returns (uint256 cTokenAmount_) {\n uint256 tokenDecimals = ERC20(TOKEN).decimals();\n uint256 cTokenDecimals = decimals();\n\n // Result in Token Decimals\n uint256 tokenPerCTokenUnit = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValue(address(this), 10**uint256(cTokenDecimals), TOKEN);\n\n // Result in cToken decimals\n uint256 inverseRate = uint256(10**tokenDecimals).mul(10**uint256(cTokenDecimals)).div(\n tokenPerCTokenUnit\n );\n\n // Amount in token decimals, result in cToken decimals\n cTokenAmount_ = _tokenAmount.mul(inverseRate).div(10**tokenDecimals);\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @dev Part of ICERC20 token interface\n function underlying() public view returns (address) {\n return TOKEN;\n }\n\n /// @dev Part of ICERC20 token interface.\n /// Called from CompoundPriceFeed, returns the actual Rate cToken/Token\n function exchangeRateStored() public view returns (uint256) {\n return rate;\n }\n\n function getCentralizedRateProvider() public view returns (address) {\n return CENTRALIZED_RATE_PROVIDER;\n }\n}\n" }, "contracts/mocks/integratees/compound/MockCTokenIntegratee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"./MockCTokenBase.sol\";\n\ncontract MockCTokenIntegratee is MockCTokenBase {\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals,\n address _token,\n address _centralizedRateProvider,\n uint256 _initialRate\n )\n public\n MockCTokenBase(_name, _symbol, _decimals, _token, _centralizedRateProvider, _initialRate)\n {}\n\n function mint(uint256 _amount) external returns (uint256) {\n uint256 destAmount = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER).calcLiveAssetValue(\n TOKEN,\n _amount,\n address(this)\n );\n\n __swapAssets(msg.sender, TOKEN, _amount, address(this), destAmount);\n return _amount;\n }\n\n function redeem(uint256 _amount) external returns (uint256) {\n uint256 destAmount = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER).calcLiveAssetValue(\n address(this),\n _amount,\n TOKEN\n );\n __swapAssets(msg.sender, address(this), _amount, TOKEN, destAmount);\n return _amount;\n }\n}\n" }, "contracts/mocks/integratees/compound/MockCEtherIntegratee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"./MockCTokenBase.sol\";\n\ncontract MockCEtherIntegratee is MockCTokenBase {\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals,\n address _weth,\n address _centralizedRateProvider,\n uint256 _initialRate\n )\n public\n MockCTokenBase(_name, _symbol, _decimals, _weth, _centralizedRateProvider, _initialRate)\n {}\n\n function mint() external payable {\n uint256 amount = msg.value;\n uint256 destAmount = __calcCTokenAmount(amount);\n __swapAssets(msg.sender, ETH_ADDRESS, amount, address(this), destAmount);\n }\n\n function redeem(uint256 _amount) external returns (uint256) {\n uint256 destAmount = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER).calcLiveAssetValue(\n address(this),\n _amount,\n TOKEN\n );\n __swapAssets(msg.sender, address(this), _amount, ETH_ADDRESS, destAmount);\n return _amount;\n }\n}\n" }, "contracts/mocks/integratees/MockChaiIntegratee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../prices/CentralizedRateProvider.sol\";\nimport \"../tokens/MockToken.sol\";\nimport \"../utils/SwapperBase.sol\";\n\ncontract MockChaiIntegratee is MockToken, SwapperBase {\n address private immutable CENTRALIZED_RATE_PROVIDER;\n address public immutable DAI;\n\n constructor(\n address _dai,\n address _centralizedRateProvider,\n uint8 _decimals\n ) public MockToken(\"Chai\", \"CHAI\", _decimals) {\n _setupDecimals(_decimals);\n CENTRALIZED_RATE_PROVIDER = _centralizedRateProvider;\n DAI = _dai;\n }\n\n function join(address, uint256 _daiAmount) external {\n uint256 tokenDecimals = ERC20(DAI).decimals();\n uint256 chaiDecimals = decimals();\n\n // Calculate the amount of tokens per one unit of DAI\n uint256 daiPerChaiUnit = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER)\n .calcLiveAssetValue(address(this), 10**uint256(chaiDecimals), DAI);\n\n // Calculate the inverse rate to know the amount of CHAI to return from a unit of DAI\n uint256 inverseRate = uint256(10**tokenDecimals).mul(10**uint256(chaiDecimals)).div(\n daiPerChaiUnit\n );\n // Mint and send those CHAI to sender\n uint256 destAmount = _daiAmount.mul(inverseRate).div(10**tokenDecimals);\n _mint(address(this), destAmount);\n __swapAssets(msg.sender, DAI, _daiAmount, address(this), destAmount);\n }\n\n function exit(address payable _trader, uint256 _chaiAmount) external {\n uint256 destAmount = CentralizedRateProvider(CENTRALIZED_RATE_PROVIDER).calcLiveAssetValue(\n address(this),\n _chaiAmount,\n DAI\n );\n // Burn CHAI of the trader.\n _burn(_trader, _chaiAmount);\n // Release DAI to the trader.\n ERC20(DAI).transfer(msg.sender, destAmount);\n }\n}\n" }, "contracts/release/extensions/integration-manager/integrations/adapters/UniswapV2Adapter.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../../../interfaces/IUniswapV2Factory.sol\";\nimport \"../../../../interfaces/IUniswapV2Router2.sol\";\nimport \"../utils/AdapterBase.sol\";\n\n/// @title UniswapV2Adapter Contract\n/// @author Enzyme Council \n/// @notice Adapter for interacting with Uniswap v2\ncontract UniswapV2Adapter is AdapterBase {\n using SafeMath for uint256;\n\n address private immutable FACTORY;\n address private immutable ROUTER;\n\n constructor(\n address _integrationManager,\n address _router,\n address _factory\n ) public AdapterBase(_integrationManager) {\n FACTORY = _factory;\n ROUTER = _router;\n }\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Provides a constant string identifier for an adapter\n /// @return identifier_ The identifer string\n function identifier() external pure override returns (string memory identifier_) {\n return \"UNISWAP_V2\";\n }\n\n /// @notice Parses the expected assets to receive from a call on integration\n /// @param _selector The function selector for the callOnIntegration\n /// @param _encodedCallArgs The encoded parameters for the callOnIntegration\n /// @return spendAssetsHandleType_ A type that dictates how to handle granting\n /// the adapter access to spend assets (`None` by default)\n /// @return spendAssets_ The assets to spend in the call\n /// @return spendAssetAmounts_ The max asset amounts to spend in the call\n /// @return incomingAssets_ The assets to receive in the call\n /// @return minIncomingAssetAmounts_ The min asset amounts to receive in the call\n function parseAssetsForMethod(bytes4 _selector, bytes calldata _encodedCallArgs)\n external\n view\n override\n returns (\n IIntegrationManager.SpendAssetsHandleType spendAssetsHandleType_,\n address[] memory spendAssets_,\n uint256[] memory spendAssetAmounts_,\n address[] memory incomingAssets_,\n uint256[] memory minIncomingAssetAmounts_\n )\n {\n if (_selector == LEND_SELECTOR) {\n (\n address[2] memory outgoingAssets,\n uint256[2] memory maxOutgoingAssetAmounts,\n ,\n uint256 minIncomingAssetAmount\n ) = __decodeLendCallArgs(_encodedCallArgs);\n\n spendAssets_ = new address[](2);\n spendAssets_[0] = outgoingAssets[0];\n spendAssets_[1] = outgoingAssets[1];\n\n spendAssetAmounts_ = new uint256[](2);\n spendAssetAmounts_[0] = maxOutgoingAssetAmounts[0];\n spendAssetAmounts_[1] = maxOutgoingAssetAmounts[1];\n\n incomingAssets_ = new address[](1);\n // No need to validate not address(0), this will be caught in IntegrationManager\n incomingAssets_[0] = IUniswapV2Factory(FACTORY).getPair(\n outgoingAssets[0],\n outgoingAssets[1]\n );\n\n minIncomingAssetAmounts_ = new uint256[](1);\n minIncomingAssetAmounts_[0] = minIncomingAssetAmount;\n } else if (_selector == REDEEM_SELECTOR) {\n (\n uint256 outgoingAssetAmount,\n address[2] memory incomingAssets,\n uint256[2] memory minIncomingAssetAmounts\n ) = __decodeRedeemCallArgs(_encodedCallArgs);\n\n spendAssets_ = new address[](1);\n // No need to validate not address(0), this will be caught in IntegrationManager\n spendAssets_[0] = IUniswapV2Factory(FACTORY).getPair(\n incomingAssets[0],\n incomingAssets[1]\n );\n\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = outgoingAssetAmount;\n\n incomingAssets_ = new address[](2);\n incomingAssets_[0] = incomingAssets[0];\n incomingAssets_[1] = incomingAssets[1];\n\n minIncomingAssetAmounts_ = new uint256[](2);\n minIncomingAssetAmounts_[0] = minIncomingAssetAmounts[0];\n minIncomingAssetAmounts_[1] = minIncomingAssetAmounts[1];\n } else if (_selector == TAKE_ORDER_SELECTOR) {\n (\n address[] memory path,\n uint256 outgoingAssetAmount,\n uint256 minIncomingAssetAmount\n ) = __decodeTakeOrderCallArgs(_encodedCallArgs);\n\n require(path.length >= 2, \"parseAssetsForMethod: _path must be >= 2\");\n\n spendAssets_ = new address[](1);\n spendAssets_[0] = path[0];\n spendAssetAmounts_ = new uint256[](1);\n spendAssetAmounts_[0] = outgoingAssetAmount;\n\n incomingAssets_ = new address[](1);\n incomingAssets_[0] = path[path.length - 1];\n minIncomingAssetAmounts_ = new uint256[](1);\n minIncomingAssetAmounts_[0] = minIncomingAssetAmount;\n } else {\n revert(\"parseAssetsForMethod: _selector invalid\");\n }\n\n return (\n IIntegrationManager.SpendAssetsHandleType.Transfer,\n spendAssets_,\n spendAssetAmounts_,\n incomingAssets_,\n minIncomingAssetAmounts_\n );\n }\n\n /// @notice Lends assets for pool tokens on Uniswap\n /// @param _vaultProxy The VaultProxy of the calling fund\n /// @param _encodedCallArgs Encoded order parameters\n /// @param _encodedAssetTransferArgs Encoded args for expected assets to spend and receive\n function lend(\n address _vaultProxy,\n bytes calldata _encodedCallArgs,\n bytes calldata _encodedAssetTransferArgs\n )\n external\n onlyIntegrationManager\n fundAssetsTransferHandler(_vaultProxy, _encodedAssetTransferArgs)\n {\n (\n address[2] memory outgoingAssets,\n uint256[2] memory maxOutgoingAssetAmounts,\n uint256[2] memory minOutgoingAssetAmounts,\n\n ) = __decodeLendCallArgs(_encodedCallArgs);\n\n __lend(\n _vaultProxy,\n outgoingAssets[0],\n outgoingAssets[1],\n maxOutgoingAssetAmounts[0],\n maxOutgoingAssetAmounts[1],\n minOutgoingAssetAmounts[0],\n minOutgoingAssetAmounts[1]\n );\n }\n\n /// @notice Redeems pool tokens on Uniswap\n /// @param _vaultProxy The VaultProxy of the calling fund\n /// @param _encodedCallArgs Encoded order parameters\n /// @param _encodedAssetTransferArgs Encoded args for expected assets to spend and receive\n function redeem(\n address _vaultProxy,\n bytes calldata _encodedCallArgs,\n bytes calldata _encodedAssetTransferArgs\n )\n external\n onlyIntegrationManager\n fundAssetsTransferHandler(_vaultProxy, _encodedAssetTransferArgs)\n {\n (\n uint256 outgoingAssetAmount,\n address[2] memory incomingAssets,\n uint256[2] memory minIncomingAssetAmounts\n ) = __decodeRedeemCallArgs(_encodedCallArgs);\n\n // More efficient to parse pool token from _encodedAssetTransferArgs than external call\n (, address[] memory spendAssets, , ) = __decodeEncodedAssetTransferArgs(\n _encodedAssetTransferArgs\n );\n\n __redeem(\n _vaultProxy,\n spendAssets[0],\n outgoingAssetAmount,\n incomingAssets[0],\n incomingAssets[1],\n minIncomingAssetAmounts[0],\n minIncomingAssetAmounts[1]\n );\n }\n\n /// @notice Trades assets on Uniswap\n /// @param _vaultProxy The VaultProxy of the calling fund\n /// @param _encodedCallArgs Encoded order parameters\n /// @param _encodedAssetTransferArgs Encoded args for expected assets to spend and receive\n function takeOrder(\n address _vaultProxy,\n bytes calldata _encodedCallArgs,\n bytes calldata _encodedAssetTransferArgs\n )\n external\n onlyIntegrationManager\n fundAssetsTransferHandler(_vaultProxy, _encodedAssetTransferArgs)\n {\n (\n address[] memory path,\n uint256 outgoingAssetAmount,\n uint256 minIncomingAssetAmount\n ) = __decodeTakeOrderCallArgs(_encodedCallArgs);\n\n __takeOrder(_vaultProxy, outgoingAssetAmount, minIncomingAssetAmount, path);\n }\n\n // PRIVATE FUNCTIONS\n\n /// @dev Helper to decode the lend encoded call arguments\n function __decodeLendCallArgs(bytes memory _encodedCallArgs)\n private\n pure\n returns (\n address[2] memory outgoingAssets_,\n uint256[2] memory maxOutgoingAssetAmounts_,\n uint256[2] memory minOutgoingAssetAmounts_,\n uint256 minIncomingAssetAmount_\n )\n {\n return abi.decode(_encodedCallArgs, (address[2], uint256[2], uint256[2], uint256));\n }\n\n /// @dev Helper to decode the redeem encoded call arguments\n function __decodeRedeemCallArgs(bytes memory _encodedCallArgs)\n private\n pure\n returns (\n uint256 outgoingAssetAmount_,\n address[2] memory incomingAssets_,\n uint256[2] memory minIncomingAssetAmounts_\n )\n {\n return abi.decode(_encodedCallArgs, (uint256, address[2], uint256[2]));\n }\n\n /// @dev Helper to decode the take order encoded call arguments\n function __decodeTakeOrderCallArgs(bytes memory _encodedCallArgs)\n private\n pure\n returns (\n address[] memory path_,\n uint256 outgoingAssetAmount_,\n uint256 minIncomingAssetAmount_\n )\n {\n return abi.decode(_encodedCallArgs, (address[], uint256, uint256));\n }\n\n /// @dev Helper to execute lend. Avoids stack-too-deep error.\n function __lend(\n address _vaultProxy,\n address _tokenA,\n address _tokenB,\n uint256 _amountADesired,\n uint256 _amountBDesired,\n uint256 _amountAMin,\n uint256 _amountBMin\n ) private {\n __approveMaxAsNeeded(_tokenA, ROUTER, _amountADesired);\n __approveMaxAsNeeded(_tokenB, ROUTER, _amountBDesired);\n\n // Execute lend on Uniswap\n IUniswapV2Router2(ROUTER).addLiquidity(\n _tokenA,\n _tokenB,\n _amountADesired,\n _amountBDesired,\n _amountAMin,\n _amountBMin,\n _vaultProxy,\n block.timestamp.add(1)\n );\n }\n\n /// @dev Helper to execute redeem. Avoids stack-too-deep error.\n function __redeem(\n address _vaultProxy,\n address _poolToken,\n uint256 _poolTokenAmount,\n address _tokenA,\n address _tokenB,\n uint256 _amountAMin,\n uint256 _amountBMin\n ) private {\n __approveMaxAsNeeded(_poolToken, ROUTER, _poolTokenAmount);\n\n // Execute redeem on Uniswap\n IUniswapV2Router2(ROUTER).removeLiquidity(\n _tokenA,\n _tokenB,\n _poolTokenAmount,\n _amountAMin,\n _amountBMin,\n _vaultProxy,\n block.timestamp.add(1)\n );\n }\n\n /// @dev Helper to execute takeOrder. Avoids stack-too-deep error.\n function __takeOrder(\n address _vaultProxy,\n uint256 _outgoingAssetAmount,\n uint256 _minIncomingAssetAmount,\n address[] memory _path\n ) private {\n __approveMaxAsNeeded(_path[0], ROUTER, _outgoingAssetAmount);\n\n // Execute fill\n IUniswapV2Router2(ROUTER).swapExactTokensForTokens(\n _outgoingAssetAmount,\n _minIncomingAssetAmount,\n _path,\n _vaultProxy,\n block.timestamp.add(1)\n );\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `FACTORY` variable\n /// @return factory_ The `FACTORY` variable value\n function getFactory() external view returns (address factory_) {\n return FACTORY;\n }\n\n /// @notice Gets the `ROUTER` variable\n /// @return router_ The `ROUTER` variable value\n function getRouter() external view returns (address router_) {\n return ROUTER;\n }\n}\n" }, "contracts/release/interfaces/IUniswapV2Router2.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @title UniswapV2Router2 Interface\n/// @author Enzyme Council \n/// @dev Minimal interface for our interactions with Uniswap V2's Router2\ninterface IUniswapV2Router2 {\n function addLiquidity(\n address,\n address,\n uint256,\n uint256,\n uint256,\n uint256,\n address,\n uint256\n )\n external\n returns (\n uint256,\n uint256,\n uint256\n );\n\n function removeLiquidity(\n address,\n address,\n uint256,\n uint256,\n uint256,\n address,\n uint256\n ) external returns (uint256, uint256);\n\n function swapExactTokensForTokens(\n uint256,\n uint256,\n address[] calldata,\n address,\n uint256\n ) external returns (uint256[] memory);\n}\n" }, "contracts/release/infrastructure/price-feeds/derivatives/feeds/ChaiPriceFeed.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"../../../../interfaces/IMakerDaoPot.sol\";\nimport \"../IDerivativePriceFeed.sol\";\n\n/// @title ChaiPriceFeed Contract\n/// @author Enzyme Council \n/// @notice Price source oracle for Chai\ncontract ChaiPriceFeed is IDerivativePriceFeed {\n using SafeMath for uint256;\n\n uint256 private constant CHI_DIVISOR = 10**27;\n address private immutable CHAI;\n address private immutable DAI;\n address private immutable DSR_POT;\n\n constructor(\n address _chai,\n address _dai,\n address _dsrPot\n ) public {\n CHAI = _chai;\n DAI = _dai;\n DSR_POT = _dsrPot;\n }\n\n /// @notice Converts a given amount of a derivative to its underlying asset values\n /// @param _derivative The derivative to convert\n /// @param _derivativeAmount The amount of the derivative to convert\n /// @return underlyings_ The underlying assets for the _derivative\n /// @return underlyingAmounts_ The amount of each underlying asset for the equivalent derivative amount\n /// @dev Calculation based on Chai source: https://github.com/dapphub/chai/blob/master/src/chai.sol\n function calcUnderlyingValues(address _derivative, uint256 _derivativeAmount)\n external\n override\n returns (address[] memory underlyings_, uint256[] memory underlyingAmounts_)\n {\n require(isSupportedAsset(_derivative), \"calcUnderlyingValues: Only Chai is supported\");\n\n underlyings_ = new address[](1);\n underlyings_[0] = DAI;\n underlyingAmounts_ = new uint256[](1);\n underlyingAmounts_[0] = _derivativeAmount.mul(IMakerDaoPot(DSR_POT).chi()).div(\n CHI_DIVISOR\n );\n }\n\n /// @notice Checks if an asset is supported by the price feed\n /// @param _asset The asset to check\n /// @return isSupported_ True if the asset is supported\n function isSupportedAsset(address _asset) public view override returns (bool isSupported_) {\n return _asset == CHAI;\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `CHAI` variable value\n /// @return chai_ The `CHAI` variable value\n function getChai() external view returns (address chai_) {\n return CHAI;\n }\n\n /// @notice Gets the `DAI` variable value\n /// @return dai_ The `DAI` variable value\n function getDai() external view returns (address dai_) {\n return DAI;\n }\n\n /// @notice Gets the `DSR_POT` variable value\n /// @return dsrPot_ The `DSR_POT` variable value\n function getDsrPot() external view returns (address dsrPot_) {\n return DSR_POT;\n }\n}\n" }, "contracts/release/interfaces/IMakerDaoPot.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\n/// @notice Limited interface for Maker DSR's Pot contract\n/// @dev See DSR integration guide: https://github.com/makerdao/developerguides/blob/master/dai/dsr-integration-guide/dsr-integration-guide-01.md\ninterface IMakerDaoPot {\n function chi() external view returns (uint256);\n\n function rho() external view returns (uint256);\n\n function drip() external returns (uint256);\n}\n" }, "contracts/release/extensions/fee-manager/fees/utils/EntranceRateFeeBase.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\nimport \"./FeeBase.sol\";\n\n/// @title EntranceRateFeeBase Contract\n/// @author Enzyme Council \n/// @notice Calculates a fee based on a rate to be charged to an investor upon entering a fund\nabstract contract EntranceRateFeeBase is FeeBase {\n using SafeMath for uint256;\n\n event FundSettingsAdded(address indexed comptrollerProxy, uint256 rate);\n\n event Settled(address indexed comptrollerProxy, address indexed payer, uint256 sharesQuantity);\n\n uint256 private constant RATE_DIVISOR = 10**18;\n IFeeManager.SettlementType private immutable SETTLEMENT_TYPE;\n\n mapping(address => uint256) private comptrollerProxyToRate;\n\n constructor(address _feeManager, IFeeManager.SettlementType _settlementType)\n public\n FeeBase(_feeManager)\n {\n require(\n _settlementType == IFeeManager.SettlementType.Burn ||\n _settlementType == IFeeManager.SettlementType.Direct,\n \"constructor: Invalid _settlementType\"\n );\n SETTLEMENT_TYPE = _settlementType;\n }\n\n // EXTERNAL FUNCTIONS\n\n /// @notice Add the fee settings for a fund\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _settingsData Encoded settings to apply to the policy for a fund\n function addFundSettings(address _comptrollerProxy, bytes calldata _settingsData)\n external\n override\n onlyFeeManager\n {\n uint256 rate = abi.decode(_settingsData, (uint256));\n require(rate > 0, \"addFundSettings: Fee rate must be >0\");\n\n comptrollerProxyToRate[_comptrollerProxy] = rate;\n\n emit FundSettingsAdded(_comptrollerProxy, rate);\n }\n\n /// @notice Gets the hooks that are implemented by the fee\n /// @return implementedHooksForSettle_ The hooks during which settle() is implemented\n /// @return implementedHooksForUpdate_ The hooks during which update() is implemented\n /// @return usesGavOnSettle_ True if GAV is used during the settle() implementation\n /// @return usesGavOnUpdate_ True if GAV is used during the update() implementation\n /// @dev Used only during fee registration\n function implementedHooks()\n external\n view\n override\n returns (\n IFeeManager.FeeHook[] memory implementedHooksForSettle_,\n IFeeManager.FeeHook[] memory implementedHooksForUpdate_,\n bool usesGavOnSettle_,\n bool usesGavOnUpdate_\n )\n {\n implementedHooksForSettle_ = new IFeeManager.FeeHook[](1);\n implementedHooksForSettle_[0] = IFeeManager.FeeHook.PostBuyShares;\n\n return (implementedHooksForSettle_, new IFeeManager.FeeHook[](0), false, false);\n }\n\n /// @notice Settles the fee\n /// @param _comptrollerProxy The ComptrollerProxy of the fund\n /// @param _settlementData Encoded args to use in calculating the settlement\n /// @return settlementType_ The type of settlement\n /// @return payer_ The payer of shares due\n /// @return sharesDue_ The amount of shares due\n function settle(\n address _comptrollerProxy,\n address,\n IFeeManager.FeeHook,\n bytes calldata _settlementData,\n uint256\n )\n external\n override\n onlyFeeManager\n returns (\n IFeeManager.SettlementType settlementType_,\n address payer_,\n uint256 sharesDue_\n )\n {\n uint256 sharesBought;\n (payer_, , sharesBought) = __decodePostBuySharesSettlementData(_settlementData);\n\n uint256 rate = comptrollerProxyToRate[_comptrollerProxy];\n sharesDue_ = sharesBought.mul(rate).div(RATE_DIVISOR.add(rate));\n\n if (sharesDue_ == 0) {\n return (IFeeManager.SettlementType.None, address(0), 0);\n }\n\n emit Settled(_comptrollerProxy, payer_, sharesDue_);\n\n return (SETTLEMENT_TYPE, payer_, sharesDue_);\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the `rate` variable for a fund\n /// @param _comptrollerProxy The ComptrollerProxy contract for the fund\n /// @return rate_ The `rate` variable value\n function getRateForFund(address _comptrollerProxy) external view returns (uint256 rate_) {\n return comptrollerProxyToRate[_comptrollerProxy];\n }\n\n /// @notice Gets the `SETTLEMENT_TYPE` variable\n /// @return settlementType_ The `SETTLEMENT_TYPE` variable value\n function getSettlementType()\n external\n view\n returns (IFeeManager.SettlementType settlementType_)\n {\n return SETTLEMENT_TYPE;\n }\n}\n" }, "contracts/release/extensions/fee-manager/fees/EntranceRateDirectFee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"./utils/EntranceRateFeeBase.sol\";\n\n/// @title EntranceRateDirectFee Contract\n/// @author Enzyme Council \n/// @notice An EntranceRateFee that transfers the fee shares to the fund manager\ncontract EntranceRateDirectFee is EntranceRateFeeBase {\n constructor(address _feeManager)\n public\n EntranceRateFeeBase(_feeManager, IFeeManager.SettlementType.Direct)\n {}\n\n /// @notice Provides a constant string identifier for a fee\n /// @return identifier_ The identifier string\n function identifier() external pure override returns (string memory identifier_) {\n return \"ENTRANCE_RATE_DIRECT\";\n }\n}\n" }, "contracts/release/extensions/fee-manager/fees/EntranceRateBurnFee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"./utils/EntranceRateFeeBase.sol\";\n\n/// @title EntranceRateBurnFee Contract\n/// @author Enzyme Council \n/// @notice An EntranceRateFee that burns the fee shares\ncontract EntranceRateBurnFee is EntranceRateFeeBase {\n constructor(address _feeManager)\n public\n EntranceRateFeeBase(_feeManager, IFeeManager.SettlementType.Burn)\n {}\n\n /// @notice Provides a constant string identifier for a fee\n /// @return identifier_ The identifier string\n function identifier() external pure override returns (string memory identifier_) {\n return \"ENTRANCE_RATE_BURN\";\n }\n}\n" }, "contracts/mocks/prices/MockChaiPriceSource.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"@openzeppelin/contracts/math/SafeMath.sol\";\n\ncontract MockChaiPriceSource {\n using SafeMath for uint256;\n\n uint256 private chiStored = 10**27;\n uint256 private rhoStored = now;\n\n function drip() external returns (uint256) {\n require(now >= rhoStored, \"drip: invalid now\");\n rhoStored = now;\n chiStored = chiStored.mul(99).div(100);\n return chi();\n }\n\n ////////////////////\n // STATE GETTERS //\n ///////////////////\n\n function chi() public view returns (uint256) {\n return chiStored;\n }\n\n function rho() public view returns (uint256) {\n return rhoStored;\n }\n}\n" }, "contracts/mocks/integratees/MockGenericIntegratee.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../utils/SwapperBase.sol\";\n\ncontract MockGenericIntegratee is SwapperBase {\n function swap(\n address[] calldata _assetsToIntegratee,\n uint256[] calldata _assetsToIntegrateeAmounts,\n address[] calldata _assetsFromIntegratee,\n uint256[] calldata _assetsFromIntegrateeAmounts\n ) external payable {\n __swap(\n msg.sender,\n _assetsToIntegratee,\n _assetsToIntegrateeAmounts,\n _assetsFromIntegratee,\n _assetsFromIntegrateeAmounts\n );\n }\n\n function swapOnBehalf(\n address payable _trader,\n address[] calldata _assetsToIntegratee,\n uint256[] calldata _assetsToIntegrateeAmounts,\n address[] calldata _assetsFromIntegratee,\n uint256[] calldata _assetsFromIntegrateeAmounts\n ) external payable {\n __swap(\n _trader,\n _assetsToIntegratee,\n _assetsToIntegrateeAmounts,\n _assetsFromIntegratee,\n _assetsFromIntegrateeAmounts\n );\n }\n}\n" }, "contracts/release/infrastructure/price-feeds/derivatives/AggregatedDerivativePriceFeed.sol": { "content": "// SPDX-License-Identifier: GPL-3.0\n\n/*\n This file is part of the Enzyme Protocol.\n\n (c) Enzyme Council \n\n For the full license information, please view the LICENSE\n file that was distributed with this source code.\n*/\n\npragma solidity 0.6.12;\n\nimport \"../../utils/DispatcherOwnerMixin.sol\";\nimport \"./IAggregatedDerivativePriceFeed.sol\";\n\n/// @title AggregatedDerivativePriceFeed Contract\n/// @author Enzyme Council \n/// @notice Aggregates multiple derivative price feeds (e.g., Compound, Chai) and dispatches\n/// rate requests to the appropriate feed\ncontract AggregatedDerivativePriceFeed is IAggregatedDerivativePriceFeed, DispatcherOwnerMixin {\n event DerivativeAdded(address indexed derivative, address priceFeed);\n\n event DerivativeRemoved(address indexed derivative);\n\n event DerivativeUpdated(\n address indexed derivative,\n address prevPriceFeed,\n address nextPriceFeed\n );\n\n mapping(address => address) private derivativeToPriceFeed;\n\n constructor(\n address _dispatcher,\n address[] memory _derivatives,\n address[] memory _priceFeeds\n ) public DispatcherOwnerMixin(_dispatcher) {\n if (_derivatives.length > 0) {\n __addDerivatives(_derivatives, _priceFeeds);\n }\n }\n\n /// @notice Gets the rates for 1 unit of the derivative to its underlying assets\n /// @param _derivative The derivative for which to get the rates\n /// @return underlyings_ The underlying assets for the _derivative\n /// @return underlyingAmounts_ The rates for the _derivative to the underlyings_\n function calcUnderlyingValues(address _derivative, uint256 _derivativeAmount)\n external\n override\n returns (address[] memory underlyings_, uint256[] memory underlyingAmounts_)\n {\n address derivativePriceFeed = derivativeToPriceFeed[_derivative];\n require(\n derivativePriceFeed != address(0),\n \"calcUnderlyingValues: _derivative is not supported\"\n );\n\n return\n IDerivativePriceFeed(derivativePriceFeed).calcUnderlyingValues(\n _derivative,\n _derivativeAmount\n );\n }\n\n /// @notice Checks whether an asset is a supported derivative\n /// @param _asset The asset to check\n /// @return isSupported_ True if the asset is a supported derivative\n /// @dev This should be as low-cost and simple as possible\n function isSupportedAsset(address _asset) external view override returns (bool isSupported_) {\n return derivativeToPriceFeed[_asset] != address(0);\n }\n\n //////////////////////////\n // DERIVATIVES REGISTRY //\n //////////////////////////\n\n /// @notice Adds a list of derivatives with the given price feed values\n /// @param _derivatives The derivatives to add\n /// @param _priceFeeds The ordered price feeds corresponding to the list of _derivatives\n function addDerivatives(address[] calldata _derivatives, address[] calldata _priceFeeds)\n external\n onlyDispatcherOwner\n {\n require(_derivatives.length > 0, \"addDerivatives: _derivatives cannot be empty\");\n\n __addDerivatives(_derivatives, _priceFeeds);\n }\n\n /// @notice Removes a list of derivatives\n /// @param _derivatives The derivatives to remove\n function removeDerivatives(address[] calldata _derivatives) external onlyDispatcherOwner {\n require(_derivatives.length > 0, \"removeDerivatives: _derivatives cannot be empty\");\n\n for (uint256 i = 0; i < _derivatives.length; i++) {\n require(\n derivativeToPriceFeed[_derivatives[i]] != address(0),\n \"removeDerivatives: Derivative not yet added\"\n );\n\n delete derivativeToPriceFeed[_derivatives[i]];\n\n emit DerivativeRemoved(_derivatives[i]);\n }\n }\n\n /// @notice Updates a list of derivatives with the given price feed values\n /// @param _derivatives The derivatives to update\n /// @param _priceFeeds The ordered price feeds corresponding to the list of _derivatives\n function updateDerivatives(address[] calldata _derivatives, address[] calldata _priceFeeds)\n external\n onlyDispatcherOwner\n {\n require(_derivatives.length > 0, \"updateDerivatives: _derivatives cannot be empty\");\n require(\n _derivatives.length == _priceFeeds.length,\n \"updateDerivatives: Unequal _derivatives and _priceFeeds array lengths\"\n );\n\n for (uint256 i = 0; i < _derivatives.length; i++) {\n address prevPriceFeed = derivativeToPriceFeed[_derivatives[i]];\n\n require(prevPriceFeed != address(0), \"updateDerivatives: Derivative not yet added\");\n require(_priceFeeds[i] != prevPriceFeed, \"updateDerivatives: Value already set\");\n\n __validateDerivativePriceFeed(_derivatives[i], _priceFeeds[i]);\n\n derivativeToPriceFeed[_derivatives[i]] = _priceFeeds[i];\n\n emit DerivativeUpdated(_derivatives[i], prevPriceFeed, _priceFeeds[i]);\n }\n }\n\n /// @dev Helper to add derivative-feed pairs\n function __addDerivatives(address[] memory _derivatives, address[] memory _priceFeeds)\n private\n {\n require(\n _derivatives.length == _priceFeeds.length,\n \"__addDerivatives: Unequal _derivatives and _priceFeeds array lengths\"\n );\n\n for (uint256 i = 0; i < _derivatives.length; i++) {\n require(\n derivativeToPriceFeed[_derivatives[i]] == address(0),\n \"__addDerivatives: Already added\"\n );\n\n __validateDerivativePriceFeed(_derivatives[i], _priceFeeds[i]);\n\n derivativeToPriceFeed[_derivatives[i]] = _priceFeeds[i];\n\n emit DerivativeAdded(_derivatives[i], _priceFeeds[i]);\n }\n }\n\n /// @dev Helper to validate a derivative price feed\n function __validateDerivativePriceFeed(address _derivative, address _priceFeed) private view {\n require(_derivative != address(0), \"__validateDerivativePriceFeed: Empty _derivative\");\n require(_priceFeed != address(0), \"__validateDerivativePriceFeed: Empty _priceFeed\");\n require(\n IDerivativePriceFeed(_priceFeed).isSupportedAsset(_derivative),\n \"__validateDerivativePriceFeed: Unsupported derivative\"\n );\n }\n\n ///////////////////\n // STATE GETTERS //\n ///////////////////\n\n /// @notice Gets the registered price feed for a given derivative\n /// @return priceFeed_ The price feed contract address\n function getPriceFeedForDerivative(address _derivative)\n external\n view\n override\n returns (address priceFeed_)\n {\n return derivativeToPriceFeed[_derivative];\n }\n}\n" } }, "settings": { "optimizer": { "enabled": true, "runs": 200, "details": { "yul": false } }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } }, "metadata": { "useLiteralContent": true } } }}

VaultProxy

开始在QuickNode上构建

源代码：