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Contract Name:
WrapperGateway
Compiler Version
v0.8.4+commit.c7e474f2
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.8.4; import {OwnableUpgradeable} from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import {IERC721Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC721/IERC721Upgradeable.sol"; import {IERC20Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol"; import {SafeERC20Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol"; import {ERC721HolderUpgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC721/utils/ERC721HolderUpgradeable.sol"; import {ReentrancyGuardUpgradeable} from "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol"; import {Errors} from "../libraries/helpers/Errors.sol"; import {ILendPool} from "../interfaces/ILendPool.sol"; import {ILendPoolLoan} from "../interfaces/ILendPoolLoan.sol"; import {ILendPoolAddressesProvider} from "../interfaces/ILendPoolAddressesProvider.sol"; import {IWrapperGateway} from "../interfaces/IWrapperGateway.sol"; import {IERC721Wrapper} from "../interfaces/IERC721Wrapper.sol"; import {DataTypes} from "../libraries/types/DataTypes.sol"; import {IWETHGateway} from "../interfaces/IWETHGateway.sol"; import {EmergencyTokenRecoveryUpgradeable} from "./EmergencyTokenRecoveryUpgradeable.sol"; contract WrapperGateway is IWrapperGateway, ReentrancyGuardUpgradeable, ERC721HolderUpgradeable, EmergencyTokenRecoveryUpgradeable { using SafeERC20Upgradeable for IERC20Upgradeable; ILendPoolAddressesProvider public addressProvider; IWETHGateway public wethGateway; IERC721Upgradeable public underlyingToken; IERC721Wrapper public wrappedToken; mapping(address => bool) internal _callerWhitelists; function initialize( address addressProvider_, address wethGateway_, address underlyingToken_, address wrappedToken_ ) public initializer { __ReentrancyGuard_init(); __ERC721Holder_init(); __EmergencyTokenRecovery_init(); addressProvider = ILendPoolAddressesProvider(addressProvider_); wethGateway = IWETHGateway(wethGateway_); underlyingToken = IERC721Upgradeable(underlyingToken_); wrappedToken = IERC721Wrapper(wrappedToken_); underlyingToken.setApprovalForAll(address(wrappedToken), true); wrappedToken.setApprovalForAll(address(_getLendPool()), true); wrappedToken.setApprovalForAll(address(wethGateway), true); } function _getLendPool() internal view returns (ILendPool) { return ILendPool(addressProvider.getLendPool()); } function _getLendPoolLoan() internal view returns (ILendPoolLoan) { return ILendPoolLoan(addressProvider.getLendPoolLoan()); } function authorizeLendPoolERC20(address[] calldata tokens) external nonReentrant onlyOwner { for (uint256 i = 0; i < tokens.length; i++) { IERC20Upgradeable(tokens[i]).safeApprove(address(_getLendPool()), type(uint256).max); } } function authorizeCallerWhitelist(address[] calldata callers, bool flag) external nonReentrant onlyOwner { for (uint256 i = 0; i < callers.length; i++) { _callerWhitelists[callers[i]] = flag; } } function isCallerInWhitelist(address caller) external view returns (bool) { return _callerWhitelists[caller]; } function _checkValidCallerAndOnBehalfOf(address onBehalfOf) internal view { require( (onBehalfOf == _msgSender()) || (_callerWhitelists[_msgSender()] == true), Errors.CALLER_NOT_ONBEHALFOF_OR_IN_WHITELIST ); } function _depositUnderlyingToken(uint256 nftTokenId) internal { ILendPoolLoan cachedPoolLoan = _getLendPoolLoan(); uint256 loanId = cachedPoolLoan.getCollateralLoanId(address(wrappedToken), nftTokenId); if (loanId != 0) { return; } underlyingToken.safeTransferFrom(msg.sender, address(this), nftTokenId); wrappedToken.mint(nftTokenId); } function borrow( address reserveAsset, uint256 amount, uint256 nftTokenId, address onBehalfOf, uint16 referralCode ) external override nonReentrant { _checkValidCallerAndOnBehalfOf(onBehalfOf); ILendPool cachedPool = _getLendPool(); _depositUnderlyingToken(nftTokenId); cachedPool.borrow(reserveAsset, amount, address(wrappedToken), nftTokenId, onBehalfOf, referralCode); IERC20Upgradeable(reserveAsset).safeTransfer(onBehalfOf, amount); } function batchBorrow( address[] calldata reserveAssets, uint256[] calldata amounts, uint256[] calldata nftTokenIds, address onBehalfOf, uint16 referralCode ) external override nonReentrant { require(nftTokenIds.length == reserveAssets.length, "WrapperGateway: inconsistent reserveAssets length"); require(nftTokenIds.length == amounts.length, "WrapperGateway: inconsistent amounts length"); _checkValidCallerAndOnBehalfOf(onBehalfOf); ILendPool cachedPool = _getLendPool(); for (uint256 i = 0; i < nftTokenIds.length; i++) { _depositUnderlyingToken(nftTokenIds[i]); cachedPool.borrow(reserveAssets[i], amounts[i], address(wrappedToken), nftTokenIds[i], onBehalfOf, referralCode); IERC20Upgradeable(reserveAssets[i]).safeTransfer(onBehalfOf, amounts[i]); } } function _withdrawUnderlyingToken(uint256 nftTokenId, address onBehalfOf) internal { address owner = wrappedToken.ownerOf(nftTokenId); require(owner == _msgSender(), "WrapperGateway: caller is not owner"); require(owner == onBehalfOf, "WrapperGateway: onBehalfOf is not owner"); wrappedToken.safeTransferFrom(onBehalfOf, address(this), nftTokenId); wrappedToken.burn(nftTokenId); underlyingToken.safeTransferFrom(address(this), owner, nftTokenId); } function repay(uint256 nftTokenId, uint256 amount) external override nonReentrant returns (uint256, bool) { return _repay(nftTokenId, amount); } function batchRepay(uint256[] calldata nftTokenIds, uint256[] calldata amounts) external override nonReentrant returns (uint256[] memory, bool[] memory) { require(nftTokenIds.length == amounts.length, "WrapperGateway: inconsistent amounts length"); uint256[] memory repayAmounts = new uint256[](nftTokenIds.length); bool[] memory repayAlls = new bool[](nftTokenIds.length); for (uint256 i = 0; i < nftTokenIds.length; i++) { (repayAmounts[i], repayAlls[i]) = _repay(nftTokenIds[i], amounts[i]); } return (repayAmounts, repayAlls); } function _repay(uint256 nftTokenId, uint256 amount) internal returns (uint256, bool) { ILendPool cachedPool = _getLendPool(); ILendPoolLoan cachedPoolLoan = _getLendPoolLoan(); uint256 loanId = cachedPoolLoan.getCollateralLoanId(address(wrappedToken), nftTokenId); require(loanId != 0, "WrapperGateway: no loan with such nftTokenId"); (, , address reserve, ) = cachedPoolLoan.getLoanCollateralAndReserve(loanId); (, uint256 debt) = cachedPoolLoan.getLoanReserveBorrowAmount(loanId); address borrower = cachedPoolLoan.borrowerOf(loanId); if (amount > debt) { amount = debt; } IERC20Upgradeable(reserve).safeTransferFrom(msg.sender, address(this), amount); (uint256 paybackAmount, bool burn) = cachedPool.repay(address(wrappedToken), nftTokenId, amount); if (burn) { require(borrower == _msgSender(), "WrapperGateway: caller is not borrower"); _withdrawUnderlyingToken(nftTokenId, borrower); } return (paybackAmount, burn); } function auction( uint256 nftTokenId, uint256 bidPrice, address onBehalfOf ) external override nonReentrant { _checkValidCallerAndOnBehalfOf(onBehalfOf); ILendPool cachedPool = _getLendPool(); ILendPoolLoan cachedPoolLoan = _getLendPoolLoan(); uint256 loanId = cachedPoolLoan.getCollateralLoanId(address(wrappedToken), nftTokenId); require(loanId != 0, "WrapperGateway: no loan with such nftTokenId"); (, , address reserve, ) = cachedPoolLoan.getLoanCollateralAndReserve(loanId); IERC20Upgradeable(reserve).safeTransferFrom(msg.sender, address(this), bidPrice); cachedPool.auction(address(wrappedToken), nftTokenId, bidPrice, onBehalfOf); } function redeem( uint256 nftTokenId, uint256 amount, uint256 bidFine ) external override nonReentrant returns (uint256) { ILendPool cachedPool = _getLendPool(); ILendPoolLoan cachedPoolLoan = _getLendPoolLoan(); uint256 loanId = cachedPoolLoan.getCollateralLoanId(address(wrappedToken), nftTokenId); require(loanId != 0, "WrapperGateway: no loan with such nftTokenId"); DataTypes.LoanData memory loan = cachedPoolLoan.getLoan(loanId); IERC20Upgradeable(loan.reserveAsset).safeTransferFrom(msg.sender, address(this), (amount + bidFine)); uint256 paybackAmount = cachedPool.redeem(address(wrappedToken), nftTokenId, amount, bidFine); if ((amount + bidFine) > paybackAmount) { IERC20Upgradeable(loan.reserveAsset).safeTransfer(msg.sender, ((amount + bidFine) - paybackAmount)); } return paybackAmount; } function liquidate(uint256 nftTokenId, uint256 amount) external override nonReentrant returns (uint256) { ILendPool cachedPool = _getLendPool(); ILendPoolLoan cachedPoolLoan = _getLendPoolLoan(); uint256 loanId = cachedPoolLoan.getCollateralLoanId(address(wrappedToken), nftTokenId); require(loanId != 0, "WrapperGateway: no loan with such nftTokenId"); DataTypes.LoanData memory loan = cachedPoolLoan.getLoan(loanId); require(loan.bidderAddress == _msgSender(), "WrapperGateway: caller is not bidder"); if (amount > 0) { IERC20Upgradeable(loan.reserveAsset).safeTransferFrom(msg.sender, address(this), amount); } uint256 extraRetAmount = cachedPool.liquidate(address(wrappedToken), nftTokenId, amount); _withdrawUnderlyingToken(nftTokenId, loan.bidderAddress); if (amount > extraRetAmount) { IERC20Upgradeable(loan.reserveAsset).safeTransfer(msg.sender, (amount - extraRetAmount)); } return (extraRetAmount); } function borrowETH( uint256 amount, uint256 nftTokenId, address onBehalfOf, uint16 referralCode ) external override nonReentrant { _checkValidCallerAndOnBehalfOf(onBehalfOf); _depositUnderlyingToken(nftTokenId); wethGateway.borrowETH(amount, address(wrappedToken), nftTokenId, onBehalfOf, referralCode); } function batchBorrowETH( uint256[] calldata amounts, uint256[] calldata nftTokenIds, address onBehalfOf, uint16 referralCode ) external override nonReentrant { require(nftTokenIds.length == amounts.length, "inconsistent amounts length"); _checkValidCallerAndOnBehalfOf(onBehalfOf); address[] memory nftAssets = new address[](nftTokenIds.length); for (uint256 i = 0; i < nftTokenIds.length; i++) { nftAssets[i] = address(wrappedToken); _depositUnderlyingToken(nftTokenIds[i]); } wethGateway.batchBorrowETH(amounts, nftAssets, nftTokenIds, onBehalfOf, referralCode); } function repayETH(uint256 nftTokenId, uint256 amount) external payable override nonReentrant returns (uint256, bool) { (uint256 paybackAmount, bool burn) = _repayETH(nftTokenId, amount, 0); // refund remaining dust eth if (msg.value > paybackAmount) { _safeTransferETH(msg.sender, msg.value - paybackAmount); } return (paybackAmount, burn); } function batchRepayETH(uint256[] calldata nftTokenIds, uint256[] calldata amounts) external payable override nonReentrant returns (uint256[] memory, bool[] memory) { require(nftTokenIds.length == amounts.length, "inconsistent amounts length"); uint256[] memory repayAmounts = new uint256[](nftTokenIds.length); bool[] memory repayAlls = new bool[](nftTokenIds.length); uint256 allRepayAmount = 0; for (uint256 i = 0; i < nftTokenIds.length; i++) { (repayAmounts[i], repayAlls[i]) = _repayETH(nftTokenIds[i], amounts[i], allRepayAmount); allRepayAmount += repayAmounts[i]; } // refund remaining dust eth if (msg.value > allRepayAmount) { _safeTransferETH(msg.sender, msg.value - allRepayAmount); } return (repayAmounts, repayAlls); } function _repayETH( uint256 nftTokenId, uint256 amount, uint256 accAmount ) internal returns (uint256, bool) { ILendPoolLoan cachedPoolLoan = _getLendPoolLoan(); uint256 loanId = cachedPoolLoan.getCollateralLoanId(address(wrappedToken), nftTokenId); require(loanId != 0, "WrapperGateway: no loan with such nftTokenId"); address borrower = cachedPoolLoan.borrowerOf(loanId); require(borrower == _msgSender(), "WrapperGateway: caller is not borrower"); (, uint256 repayDebtAmount) = cachedPoolLoan.getLoanReserveBorrowAmount(loanId); if (amount < repayDebtAmount) { repayDebtAmount = amount; } require(msg.value >= (accAmount + repayDebtAmount), "msg.value is less than repay amount"); (uint256 paybackAmount, bool burn) = wethGateway.repayETH{value: repayDebtAmount}( address(wrappedToken), nftTokenId, amount ); if (burn) { _withdrawUnderlyingToken(nftTokenId, borrower); } return (paybackAmount, burn); } function auctionETH(uint256 nftTokenId, address onBehalfOf) external payable override nonReentrant { _checkValidCallerAndOnBehalfOf(onBehalfOf); wethGateway.auctionETH{value: msg.value}(address(wrappedToken), nftTokenId, onBehalfOf); } function redeemETH( uint256 nftTokenId, uint256 amount, uint256 bidFine ) external payable override nonReentrant returns (uint256) { ILendPoolLoan cachedPoolLoan = _getLendPoolLoan(); uint256 loanId = cachedPoolLoan.getCollateralLoanId(address(wrappedToken), nftTokenId); require(loanId != 0, "WrapperGateway: no loan with such nftTokenId"); //DataTypes.LoanData memory loan = cachedPoolLoan.getLoan(loanId); uint256 paybackAmount = wethGateway.redeemETH{value: msg.value}(address(wrappedToken), nftTokenId, amount, bidFine); // refund remaining dust eth if (msg.value > paybackAmount) { _safeTransferETH(msg.sender, msg.value - paybackAmount); } return paybackAmount; } function liquidateETH(uint256 nftTokenId) external payable override nonReentrant returns (uint256) { ILendPoolLoan cachedPoolLoan = _getLendPoolLoan(); uint256 loanId = cachedPoolLoan.getCollateralLoanId(address(wrappedToken), nftTokenId); require(loanId != 0, "WrapperGateway: no loan with such nftTokenId"); DataTypes.LoanData memory loan = cachedPoolLoan.getLoan(loanId); require(loan.bidderAddress == _msgSender(), "WrapperGateway: caller is not bidder"); uint256 extraAmount = wethGateway.liquidateETH{value: msg.value}(address(wrappedToken), nftTokenId); _withdrawUnderlyingToken(nftTokenId, loan.bidderAddress); // refund remaining dust eth if (msg.value > extraAmount) { _safeTransferETH(msg.sender, msg.value - extraAmount); } return extraAmount; } /** * @dev transfer ETH to an address, revert if it fails. * @param to recipient of the transfer * @param value the amount to send */ function _safeTransferETH(address to, uint256 value) internal { (bool success, ) = to.call{value: value}(new bytes(0)); require(success, "ETH_TRANSFER_FAILED"); } /** * @dev */ receive() external payable {} /** * @dev Revert fallback calls */ fallback() external payable { revert("Fallback not allowed"); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/ContextUpgradeable.sol"; import "../proxy/utils/Initializable.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function __Ownable_init() internal onlyInitializing { __Context_init_unchained(); __Ownable_init_unchained(); } function __Ownable_init_unchained() internal onlyInitializing { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } uint256[49] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165Upgradeable.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721Upgradeable is IERC165Upgradeable { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20Upgradeable { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20Upgradeable.sol"; import "../../../utils/AddressUpgradeable.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20Upgradeable { using AddressUpgradeable for address; function safeTransfer( IERC20Upgradeable token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20Upgradeable token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20Upgradeable token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20Upgradeable token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20Upgradeable token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20Upgradeable token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/utils/ERC721Holder.sol) pragma solidity ^0.8.0; import "../IERC721ReceiverUpgradeable.sol"; import "../../../proxy/utils/Initializable.sol"; /** * @dev Implementation of the {IERC721Receiver} interface. * * Accepts all token transfers. * Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}. */ contract ERC721HolderUpgradeable is Initializable, IERC721ReceiverUpgradeable { function __ERC721Holder_init() internal onlyInitializing { __ERC721Holder_init_unchained(); } function __ERC721Holder_init_unchained() internal onlyInitializing { } /** * @dev See {IERC721Receiver-onERC721Received}. * * Always returns `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address, address, uint256, bytes memory ) public virtual override returns (bytes4) { return this.onERC721Received.selector; } uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuardUpgradeable is Initializable { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; function __ReentrancyGuard_init() internal onlyInitializing { __ReentrancyGuard_init_unchained(); } function __ReentrancyGuard_init_unchained() internal onlyInitializing { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } uint256[49] private __gap; }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.8.4; /** * @title Errors library * @author Bend * @notice Defines the error messages emitted by the different contracts of the Bend protocol */ library Errors { enum ReturnCode { SUCCESS, FAILED } string public constant SUCCESS = "0"; //common errors string public constant CALLER_NOT_POOL_ADMIN = "100"; // 'The caller must be the pool admin' string public constant CALLER_NOT_ADDRESS_PROVIDER = "101"; string public constant INVALID_FROM_BALANCE_AFTER_TRANSFER = "102"; string public constant INVALID_TO_BALANCE_AFTER_TRANSFER = "103"; string public constant CALLER_NOT_ONBEHALFOF_OR_IN_WHITELIST = "104"; //math library erros string public constant MATH_MULTIPLICATION_OVERFLOW = "200"; string public constant MATH_ADDITION_OVERFLOW = "201"; string public constant MATH_DIVISION_BY_ZERO = "202"; //validation & check errors string public constant VL_INVALID_AMOUNT = "301"; // 'Amount must be greater than 0' string public constant VL_NO_ACTIVE_RESERVE = "302"; // 'Action requires an active reserve' string public constant VL_RESERVE_FROZEN = "303"; // 'Action cannot be performed because the reserve is frozen' string public constant VL_NOT_ENOUGH_AVAILABLE_USER_BALANCE = "304"; // 'User cannot withdraw more than the available balance' string public constant VL_BORROWING_NOT_ENABLED = "305"; // 'Borrowing is not enabled' string public constant VL_COLLATERAL_BALANCE_IS_0 = "306"; // 'The collateral balance is 0' string public constant VL_HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD = "307"; // 'Health factor is lesser than the liquidation threshold' string public constant VL_COLLATERAL_CANNOT_COVER_NEW_BORROW = "308"; // 'There is not enough collateral to cover a new borrow' string public constant VL_NO_DEBT_OF_SELECTED_TYPE = "309"; // 'for repayment of stable debt, the user needs to have stable debt, otherwise, he needs to have variable debt' string public constant VL_NO_ACTIVE_NFT = "310"; string public constant VL_NFT_FROZEN = "311"; string public constant VL_SPECIFIED_CURRENCY_NOT_BORROWED_BY_USER = "312"; // 'User did not borrow the specified currency' string public constant VL_INVALID_HEALTH_FACTOR = "313"; string public constant VL_INVALID_ONBEHALFOF_ADDRESS = "314"; string public constant VL_INVALID_TARGET_ADDRESS = "315"; string public constant VL_INVALID_RESERVE_ADDRESS = "316"; string public constant VL_SPECIFIED_LOAN_NOT_BORROWED_BY_USER = "317"; string public constant VL_SPECIFIED_RESERVE_NOT_BORROWED_BY_USER = "318"; string public constant VL_HEALTH_FACTOR_HIGHER_THAN_LIQUIDATION_THRESHOLD = "319"; //lend pool errors string public constant LP_CALLER_NOT_LEND_POOL_CONFIGURATOR = "400"; // 'The caller of the function is not the lending pool configurator' string public constant LP_IS_PAUSED = "401"; // 'Pool is paused' string public constant LP_NO_MORE_RESERVES_ALLOWED = "402"; string public constant LP_NOT_CONTRACT = "403"; string public constant LP_BORROW_NOT_EXCEED_LIQUIDATION_THRESHOLD = "404"; string public constant LP_BORROW_IS_EXCEED_LIQUIDATION_PRICE = "405"; string public constant LP_NO_MORE_NFTS_ALLOWED = "406"; string public constant LP_INVALIED_USER_NFT_AMOUNT = "407"; string public constant LP_INCONSISTENT_PARAMS = "408"; string public constant LP_NFT_IS_NOT_USED_AS_COLLATERAL = "409"; string public constant LP_CALLER_MUST_BE_AN_BTOKEN = "410"; string public constant LP_INVALIED_NFT_AMOUNT = "411"; string public constant LP_NFT_HAS_USED_AS_COLLATERAL = "412"; string public constant LP_DELEGATE_CALL_FAILED = "413"; string public constant LP_AMOUNT_LESS_THAN_EXTRA_DEBT = "414"; string public constant LP_AMOUNT_LESS_THAN_REDEEM_THRESHOLD = "415"; string public constant LP_AMOUNT_GREATER_THAN_MAX_REPAY = "416"; string public constant LP_NFT_TOKEN_ID_EXCEED_MAX_LIMIT = "417"; string public constant LP_NFT_SUPPLY_NUM_EXCEED_MAX_LIMIT = "418"; string public constant LP_CALLER_NOT_VALID_INTERCEPTOR = "419"; string public constant LP_CALLER_NOT_VALID_LOCKER = "420"; //lend pool loan errors string public constant LPL_INVALID_LOAN_STATE = "480"; string public constant LPL_INVALID_LOAN_AMOUNT = "481"; string public constant LPL_INVALID_TAKEN_AMOUNT = "482"; string public constant LPL_AMOUNT_OVERFLOW = "483"; string public constant LPL_BID_PRICE_LESS_THAN_LIQUIDATION_PRICE = "484"; string public constant LPL_BID_PRICE_LESS_THAN_HIGHEST_PRICE = "485"; string public constant LPL_BID_REDEEM_DURATION_HAS_END = "486"; string public constant LPL_BID_USER_NOT_SAME = "487"; string public constant LPL_BID_REPAY_AMOUNT_NOT_ENOUGH = "488"; string public constant LPL_BID_AUCTION_DURATION_HAS_END = "489"; string public constant LPL_BID_AUCTION_DURATION_NOT_END = "490"; string public constant LPL_BID_PRICE_LESS_THAN_BORROW = "491"; string public constant LPL_INVALID_BIDDER_ADDRESS = "492"; string public constant LPL_AMOUNT_LESS_THAN_BID_FINE = "493"; string public constant LPL_INVALID_BID_FINE = "494"; //common token errors string public constant CT_CALLER_MUST_BE_LEND_POOL = "500"; // 'The caller of this function must be a lending pool' string public constant CT_INVALID_MINT_AMOUNT = "501"; //invalid amount to mint string public constant CT_INVALID_BURN_AMOUNT = "502"; //invalid amount to burn string public constant CT_BORROW_ALLOWANCE_NOT_ENOUGH = "503"; //reserve logic errors string public constant RL_RESERVE_ALREADY_INITIALIZED = "601"; // 'Reserve has already been initialized' string public constant RL_LIQUIDITY_INDEX_OVERFLOW = "602"; // Liquidity index overflows uint128 string public constant RL_VARIABLE_BORROW_INDEX_OVERFLOW = "603"; // Variable borrow index overflows uint128 string public constant RL_LIQUIDITY_RATE_OVERFLOW = "604"; // Liquidity rate overflows uint128 string public constant RL_VARIABLE_BORROW_RATE_OVERFLOW = "605"; // Variable borrow rate overflows uint128 //configure errors string public constant LPC_RESERVE_LIQUIDITY_NOT_0 = "700"; // 'The liquidity of the reserve needs to be 0' string public constant LPC_INVALID_CONFIGURATION = "701"; // 'Invalid risk parameters for the reserve' string public constant LPC_CALLER_NOT_EMERGENCY_ADMIN = "702"; // 'The caller must be the emergency admin' string public constant LPC_INVALIED_BNFT_ADDRESS = "703"; string public constant LPC_INVALIED_LOAN_ADDRESS = "704"; string public constant LPC_NFT_LIQUIDITY_NOT_0 = "705"; //reserve config errors string public constant RC_INVALID_LTV = "730"; string public constant RC_INVALID_LIQ_THRESHOLD = "731"; string public constant RC_INVALID_LIQ_BONUS = "732"; string public constant RC_INVALID_DECIMALS = "733"; string public constant RC_INVALID_RESERVE_FACTOR = "734"; string public constant RC_INVALID_REDEEM_DURATION = "735"; string public constant RC_INVALID_AUCTION_DURATION = "736"; string public constant RC_INVALID_REDEEM_FINE = "737"; string public constant RC_INVALID_REDEEM_THRESHOLD = "738"; string public constant RC_INVALID_MIN_BID_FINE = "739"; string public constant RC_INVALID_MAX_BID_FINE = "740"; //address provider erros string public constant LPAPR_PROVIDER_NOT_REGISTERED = "760"; // 'Provider is not registered' string public constant LPAPR_INVALID_ADDRESSES_PROVIDER_ID = "761"; }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.8.4; import {ILendPoolAddressesProvider} from "./ILendPoolAddressesProvider.sol"; import {DataTypes} from "../libraries/types/DataTypes.sol"; interface ILendPool { /** * @dev Emitted on deposit() * @param user The address initiating the deposit * @param amount The amount deposited * @param reserve The address of the underlying asset of the reserve * @param onBehalfOf The beneficiary of the deposit, receiving the bTokens * @param referral The referral code used **/ event Deposit( address user, address indexed reserve, uint256 amount, address indexed onBehalfOf, uint16 indexed referral ); /** * @dev Emitted on withdraw() * @param user The address initiating the withdrawal, owner of bTokens * @param reserve The address of the underlyng asset being withdrawn * @param amount The amount to be withdrawn * @param to Address that will receive the underlying **/ event Withdraw(address indexed user, address indexed reserve, uint256 amount, address indexed to); /** * @dev Emitted on borrow() when loan needs to be opened * @param user The address of the user initiating the borrow(), receiving the funds * @param reserve The address of the underlying asset being borrowed * @param amount The amount borrowed out * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token id of the underlying NFT used as collateral * @param onBehalfOf The address that will be getting the loan * @param referral The referral code used **/ event Borrow( address user, address indexed reserve, uint256 amount, address nftAsset, uint256 nftTokenId, address indexed onBehalfOf, uint256 borrowRate, uint256 loanId, uint16 indexed referral ); /** * @dev Emitted on repay() * @param user The address of the user initiating the repay(), providing the funds * @param reserve The address of the underlying asset of the reserve * @param amount The amount repaid * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token id of the underlying NFT used as collateral * @param borrower The beneficiary of the repayment, getting his debt reduced * @param loanId The loan ID of the NFT loans **/ event Repay( address user, address indexed reserve, uint256 amount, address indexed nftAsset, uint256 nftTokenId, address indexed borrower, uint256 loanId ); /** * @dev Emitted when a borrower's loan is auctioned. * @param user The address of the user initiating the auction * @param reserve The address of the underlying asset of the reserve * @param bidPrice The price of the underlying reserve given by the bidder * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token id of the underlying NFT used as collateral * @param onBehalfOf The address that will be getting the NFT * @param loanId The loan ID of the NFT loans **/ event Auction( address user, address indexed reserve, uint256 bidPrice, address indexed nftAsset, uint256 nftTokenId, address onBehalfOf, address indexed borrower, uint256 loanId ); /** * @dev Emitted on redeem() * @param user The address of the user initiating the redeem(), providing the funds * @param reserve The address of the underlying asset of the reserve * @param borrowAmount The borrow amount repaid * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token id of the underlying NFT used as collateral * @param loanId The loan ID of the NFT loans **/ event Redeem( address user, address indexed reserve, uint256 borrowAmount, uint256 fineAmount, address indexed nftAsset, uint256 nftTokenId, address indexed borrower, uint256 loanId ); /** * @dev Emitted when a borrower's loan is liquidated. * @param user The address of the user initiating the auction * @param reserve The address of the underlying asset of the reserve * @param repayAmount The amount of reserve repaid by the liquidator * @param remainAmount The amount of reserve received by the borrower * @param loanId The loan ID of the NFT loans **/ event Liquidate( address user, address indexed reserve, uint256 repayAmount, uint256 remainAmount, address indexed nftAsset, uint256 nftTokenId, address indexed borrower, uint256 loanId ); /** * @dev Emitted when the pause is triggered. */ event Paused(); /** * @dev Emitted when the pause is lifted. */ event Unpaused(); /** * @dev Emitted when the pause time is updated. */ event PausedTimeUpdated(uint256 startTime, uint256 durationTime); /** * @dev Emitted when the state of a reserve is updated. NOTE: This event is actually declared * in the ReserveLogic library and emitted in the updateInterestRates() function. Since the function is internal, * the event will actually be fired by the LendPool contract. The event is therefore replicated here so it * gets added to the LendPool ABI * @param reserve The address of the underlying asset of the reserve * @param liquidityRate The new liquidity rate * @param variableBorrowRate The new variable borrow rate * @param liquidityIndex The new liquidity index * @param variableBorrowIndex The new variable borrow index **/ event ReserveDataUpdated( address indexed reserve, uint256 liquidityRate, uint256 variableBorrowRate, uint256 liquidityIndex, uint256 variableBorrowIndex ); /** * @dev Deposits an `amount` of underlying asset into the reserve, receiving in return overlying bTokens. * - E.g. User deposits 100 USDC and gets in return 100 bUSDC * @param reserve The address of the underlying asset to deposit * @param amount The amount to be deposited * @param onBehalfOf The address that will receive the bTokens, same as msg.sender if the user * wants to receive them on his own wallet, or a different address if the beneficiary of bTokens * is a different wallet * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man **/ function deposit( address reserve, uint256 amount, address onBehalfOf, uint16 referralCode ) external; /** * @dev Withdraws an `amount` of underlying asset from the reserve, burning the equivalent bTokens owned * E.g. User has 100 bUSDC, calls withdraw() and receives 100 USDC, burning the 100 bUSDC * @param reserve The address of the underlying asset to withdraw * @param amount The underlying amount to be withdrawn * - Send the value type(uint256).max in order to withdraw the whole bToken balance * @param to Address that will receive the underlying, same as msg.sender if the user * wants to receive it on his own wallet, or a different address if the beneficiary is a * different wallet * @return The final amount withdrawn **/ function withdraw( address reserve, uint256 amount, address to ) external returns (uint256); /** * @dev Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower * already deposited enough collateral * - E.g. User borrows 100 USDC, receiving the 100 USDC in his wallet * and lock collateral asset in contract * @param reserveAsset The address of the underlying asset to borrow * @param amount The amount to be borrowed * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token ID of the underlying NFT used as collateral * @param onBehalfOf Address of the user who will receive the loan. Should be the address of the borrower itself * calling the function if he wants to borrow against his own collateral, or the address of the credit delegator * if he has been given credit delegation allowance * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man **/ function borrow( address reserveAsset, uint256 amount, address nftAsset, uint256 nftTokenId, address onBehalfOf, uint16 referralCode ) external; function batchBorrow( address[] calldata assets, uint256[] calldata amounts, address[] calldata nftAssets, uint256[] calldata nftTokenIds, address onBehalfOf, uint16 referralCode ) external; /** * @notice Repays a borrowed `amount` on a specific reserve, burning the equivalent loan owned * - E.g. User repays 100 USDC, burning loan and receives collateral asset * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token ID of the underlying NFT used as collateral * @param amount The amount to repay * @return The final amount repaid, loan is burned or not **/ function repay( address nftAsset, uint256 nftTokenId, uint256 amount ) external returns (uint256, bool); function batchRepay( address[] calldata nftAssets, uint256[] calldata nftTokenIds, uint256[] calldata amounts ) external returns (uint256[] memory, bool[] memory); /** * @dev Function to auction a non-healthy position collateral-wise * - The caller (liquidator) want to buy collateral asset of the user getting liquidated * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token ID of the underlying NFT used as collateral * @param bidPrice The bid price of the liquidator want to buy the underlying NFT * @param onBehalfOf Address of the user who will get the underlying NFT, same as msg.sender if the user * wants to receive them on his own wallet, or a different address if the beneficiary of NFT * is a different wallet **/ function auction( address nftAsset, uint256 nftTokenId, uint256 bidPrice, address onBehalfOf ) external; /** * @notice Redeem a NFT loan which state is in Auction * - E.g. User repays 100 USDC, burning loan and receives collateral asset * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token ID of the underlying NFT used as collateral * @param amount The amount to repay the debt * @param bidFine The amount of bid fine **/ function redeem( address nftAsset, uint256 nftTokenId, uint256 amount, uint256 bidFine ) external returns (uint256); /** * @dev Function to liquidate a non-healthy position collateral-wise * - The caller (liquidator) buy collateral asset of the user getting liquidated, and receives * the collateral asset * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token ID of the underlying NFT used as collateral **/ function liquidate( address nftAsset, uint256 nftTokenId, uint256 amount ) external returns (uint256); /** * @dev Validates and finalizes an bToken transfer * - Only callable by the overlying bToken of the `asset` * @param asset The address of the underlying asset of the bToken * @param from The user from which the bTokens are transferred * @param to The user receiving the bTokens * @param amount The amount being transferred/withdrawn * @param balanceFromBefore The bToken balance of the `from` user before the transfer * @param balanceToBefore The bToken balance of the `to` user before the transfer */ function finalizeTransfer( address asset, address from, address to, uint256 amount, uint256 balanceFromBefore, uint256 balanceToBefore ) external view; function getReserveConfiguration(address asset) external view returns (DataTypes.ReserveConfigurationMap memory); function getNftConfiguration(address asset) external view returns (DataTypes.NftConfigurationMap memory); /** * @dev Returns the normalized income normalized income of the reserve * @param asset The address of the underlying asset of the reserve * @return The reserve's normalized income */ function getReserveNormalizedIncome(address asset) external view returns (uint256); /** * @dev Returns the normalized variable debt per unit of asset * @param asset The address of the underlying asset of the reserve * @return The reserve normalized variable debt */ function getReserveNormalizedVariableDebt(address asset) external view returns (uint256); /** * @dev Returns the state and configuration of the reserve * @param asset The address of the underlying asset of the reserve * @return The state of the reserve **/ function getReserveData(address asset) external view returns (DataTypes.ReserveData memory); function getReservesList() external view returns (address[] memory); function getNftData(address asset) external view returns (DataTypes.NftData memory); /** * @dev Returns the loan data of the NFT * @param nftAsset The address of the NFT * @param reserveAsset The address of the Reserve * @return totalCollateralInETH the total collateral in ETH of the NFT * @return totalCollateralInReserve the total collateral in Reserve of the NFT * @return availableBorrowsInETH the borrowing power in ETH of the NFT * @return availableBorrowsInReserve the borrowing power in Reserve of the NFT * @return ltv the loan to value of the user * @return liquidationThreshold the liquidation threshold of the NFT * @return liquidationBonus the liquidation bonus of the NFT **/ function getNftCollateralData(address nftAsset, address reserveAsset) external view returns ( uint256 totalCollateralInETH, uint256 totalCollateralInReserve, uint256 availableBorrowsInETH, uint256 availableBorrowsInReserve, uint256 ltv, uint256 liquidationThreshold, uint256 liquidationBonus ); /** * @dev Returns the debt data of the NFT * @param nftAsset The address of the NFT * @param nftTokenId The token id of the NFT * @return loanId the loan id of the NFT * @return reserveAsset the address of the Reserve * @return totalCollateral the total power of the NFT * @return totalDebt the total debt of the NFT * @return availableBorrows the borrowing power left of the NFT * @return healthFactor the current health factor of the NFT **/ function getNftDebtData(address nftAsset, uint256 nftTokenId) external view returns ( uint256 loanId, address reserveAsset, uint256 totalCollateral, uint256 totalDebt, uint256 availableBorrows, uint256 healthFactor ); /** * @dev Returns the auction data of the NFT * @param nftAsset The address of the NFT * @param nftTokenId The token id of the NFT * @return loanId the loan id of the NFT * @return bidderAddress the highest bidder address of the loan * @return bidPrice the highest bid price in Reserve of the loan * @return bidBorrowAmount the borrow amount in Reserve of the loan * @return bidFine the penalty fine of the loan **/ function getNftAuctionData(address nftAsset, uint256 nftTokenId) external view returns ( uint256 loanId, address bidderAddress, uint256 bidPrice, uint256 bidBorrowAmount, uint256 bidFine ); function getNftAuctionEndTime(address nftAsset, uint256 nftTokenId) external view returns ( uint256 loanId, uint256 bidStartTimestamp, uint256 bidEndTimestamp, uint256 redeemEndTimestamp ); function getNftLiquidatePrice(address nftAsset, uint256 nftTokenId) external view returns (uint256 liquidatePrice, uint256 paybackAmount); function getNftsList() external view returns (address[] memory); /** * @dev Set the _pause state of a reserve * - Only callable by the LendPool contract * @param val `true` to pause the reserve, `false` to un-pause it */ function setPause(bool val) external; function setPausedTime(uint256 startTime, uint256 durationTime) external; /** * @dev Returns if the LendPool is paused */ function paused() external view returns (bool); function getPausedTime() external view returns (uint256, uint256); function getAddressesProvider() external view returns (ILendPoolAddressesProvider); function initReserve( address asset, address bTokenAddress, address debtTokenAddress, address interestRateAddress ) external; function initNft(address asset, address bNftAddress) external; function setReserveInterestRateAddress(address asset, address rateAddress) external; function setReserveConfiguration(address asset, uint256 configuration) external; function setNftConfiguration(address asset, uint256 configuration) external; function setNftMaxSupplyAndTokenId( address asset, uint256 maxSupply, uint256 maxTokenId ) external; function setMaxNumberOfReserves(uint256 val) external; function setMaxNumberOfNfts(uint256 val) external; function getMaxNumberOfReserves() external view returns (uint256); function getMaxNumberOfNfts() external view returns (uint256); }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.8.4; import {DataTypes} from "../libraries/types/DataTypes.sol"; interface ILendPoolLoan { /** * @dev Emitted on initialization to share location of dependent notes * @param pool The address of the associated lend pool */ event Initialized(address indexed pool); /** * @dev Emitted when a loan is created * @param user The address initiating the action */ event LoanCreated( address indexed user, address indexed onBehalfOf, uint256 indexed loanId, address nftAsset, uint256 nftTokenId, address reserveAsset, uint256 amount, uint256 borrowIndex ); /** * @dev Emitted when a loan is updated * @param user The address initiating the action */ event LoanUpdated( address indexed user, uint256 indexed loanId, address nftAsset, uint256 nftTokenId, address reserveAsset, uint256 amountAdded, uint256 amountTaken, uint256 borrowIndex ); /** * @dev Emitted when a loan is repaid by the borrower * @param user The address initiating the action */ event LoanRepaid( address indexed user, uint256 indexed loanId, address nftAsset, uint256 nftTokenId, address reserveAsset, uint256 amount, uint256 borrowIndex ); /** * @dev Emitted when a loan is auction by the liquidator * @param user The address initiating the action */ event LoanAuctioned( address indexed user, uint256 indexed loanId, address nftAsset, uint256 nftTokenId, uint256 amount, uint256 borrowIndex, address bidder, uint256 price, address previousBidder, uint256 previousPrice ); /** * @dev Emitted when a loan is redeemed * @param user The address initiating the action */ event LoanRedeemed( address indexed user, uint256 indexed loanId, address nftAsset, uint256 nftTokenId, address reserveAsset, uint256 amountTaken, uint256 borrowIndex ); /** * @dev Emitted when a loan is liquidate by the liquidator * @param user The address initiating the action */ event LoanLiquidated( address indexed user, uint256 indexed loanId, address nftAsset, uint256 nftTokenId, address reserveAsset, uint256 amount, uint256 borrowIndex ); event LoanRepaidInterceptorUpdated(address nftAsset, uint256 tokenId, address indexed interceptor, bool approved); function initNft(address nftAsset, address bNftAddress) external; /** * @dev Create store a loan object with some params * @param initiator The address of the user initiating the borrow * @param onBehalfOf The address receiving the loan */ function createLoan( address initiator, address onBehalfOf, address nftAsset, uint256 nftTokenId, address bNftAddress, address reserveAsset, uint256 amount, uint256 borrowIndex ) external returns (uint256); /** * @dev Update the given loan with some params * * Requirements: * - The caller must be a holder of the loan * - The loan must be in state Active * @param initiator The address of the user initiating the borrow */ function updateLoan( address initiator, uint256 loanId, uint256 amountAdded, uint256 amountTaken, uint256 borrowIndex ) external; /** * @dev Repay the given loan * * Requirements: * - The caller must be a holder of the loan * - The caller must send in principal + interest * - The loan must be in state Active * * @param initiator The address of the user initiating the repay * @param loanId The loan getting burned * @param bNftAddress The address of bNFT */ function repayLoan( address initiator, uint256 loanId, address bNftAddress, uint256 amount, uint256 borrowIndex ) external; /** * @dev Auction the given loan * * Requirements: * - The price must be greater than current highest price * - The loan must be in state Active or Auction * * @param initiator The address of the user initiating the auction * @param loanId The loan getting auctioned * @param bidPrice The bid price of this auction */ function auctionLoan( address initiator, uint256 loanId, address onBehalfOf, uint256 bidPrice, uint256 borrowAmount, uint256 borrowIndex ) external; /** * @dev Redeem the given loan with some params * * Requirements: * - The caller must be a holder of the loan * - The loan must be in state Auction * @param initiator The address of the user initiating the borrow */ function redeemLoan( address initiator, uint256 loanId, uint256 amountTaken, uint256 borrowIndex ) external; /** * @dev Liquidate the given loan * * Requirements: * - The caller must send in principal + interest * - The loan must be in state Active * * @param initiator The address of the user initiating the auction * @param loanId The loan getting burned * @param bNftAddress The address of bNFT */ function liquidateLoan( address initiator, uint256 loanId, address bNftAddress, uint256 borrowAmount, uint256 borrowIndex ) external; /** * @dev Add or remove the interceptor from the whitelist * @param interceptor The address of the interceptor contract * @param approved add or remove */ function approveLoanRepaidInterceptor(address interceptor, bool approved) external; function isLoanRepaidInterceptorApproved(address interceptor) external view returns (bool); function purgeLoanRepaidInterceptor( address nftAddress, uint256[] calldata tokenIds, address interceptor ) external; function addLoanRepaidInterceptor(address nftAsset, uint256 tokenId) external; function deleteLoanRepaidInterceptor(address nftAsset, uint256 tokenId) external; function getLoanRepaidInterceptors(address nftAsset, uint256 tokenId) external view returns (address[] memory); /** * @dev Add or remove the locker from the whitelist * @param locker The address of the locker contract * @param approved add or remove */ function approveFlashLoanLocker(address locker, bool approved) external; function isFlashLoanLockerApproved(address locker) external view returns (bool); /** * @dev Lock or unlock the flash loan caller * @param nftAsset The address of the NFT asset * @param tokenId The id of the NFT token * @param locked lock or unlock */ function setFlashLoanLocking( address nftAsset, uint256 tokenId, bool locked ) external; function purgeFlashLoanLocking( address nftAsset, uint256[] calldata tokenIds, address locker ) external; function borrowerOf(uint256 loanId) external view returns (address); function getCollateralLoanId(address nftAsset, uint256 nftTokenId) external view returns (uint256); function getLoan(uint256 loanId) external view returns (DataTypes.LoanData memory loanData); function getLoanCollateralAndReserve(uint256 loanId) external view returns ( address nftAsset, uint256 nftTokenId, address reserveAsset, uint256 scaledAmount ); function getLoanReserveBorrowScaledAmount(uint256 loanId) external view returns (address, uint256); function getLoanReserveBorrowAmount(uint256 loanId) external view returns (address, uint256); function getLoanHighestBid(uint256 loanId) external view returns (address, uint256); function getNftCollateralAmount(address nftAsset) external view returns (uint256); function getUserNftCollateralAmount(address user, address nftAsset) external view returns (uint256); }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.8.4; /** * @title LendPoolAddressesProvider contract * @dev Main registry of addresses part of or connected to the protocol, including permissioned roles * - Acting also as factory of proxies and admin of those, so with right to change its implementations * - Owned by the Bend Governance * @author Bend **/ interface ILendPoolAddressesProvider { event MarketIdSet(string newMarketId); event LendPoolUpdated(address indexed newAddress, bytes encodedCallData); event ConfigurationAdminUpdated(address indexed newAddress); event EmergencyAdminUpdated(address indexed newAddress); event LendPoolConfiguratorUpdated(address indexed newAddress, bytes encodedCallData); event ReserveOracleUpdated(address indexed newAddress); event NftOracleUpdated(address indexed newAddress); event LendPoolLoanUpdated(address indexed newAddress, bytes encodedCallData); event ProxyCreated(bytes32 id, address indexed newAddress); event AddressSet(bytes32 id, address indexed newAddress, bool hasProxy, bytes encodedCallData); event BNFTRegistryUpdated(address indexed newAddress); event IncentivesControllerUpdated(address indexed newAddress); event UIDataProviderUpdated(address indexed newAddress); event BendDataProviderUpdated(address indexed newAddress); event WalletBalanceProviderUpdated(address indexed newAddress); function getMarketId() external view returns (string memory); function setMarketId(string calldata marketId) external; function setAddress(bytes32 id, address newAddress) external; function setAddressAsProxy( bytes32 id, address impl, bytes memory encodedCallData ) external; function getAddress(bytes32 id) external view returns (address); function getLendPool() external view returns (address); function setLendPoolImpl(address pool, bytes memory encodedCallData) external; function getLendPoolConfigurator() external view returns (address); function setLendPoolConfiguratorImpl(address configurator, bytes memory encodedCallData) external; function getPoolAdmin() external view returns (address); function setPoolAdmin(address admin) external; function getEmergencyAdmin() external view returns (address); function setEmergencyAdmin(address admin) external; function getReserveOracle() external view returns (address); function setReserveOracle(address reserveOracle) external; function getNFTOracle() external view returns (address); function setNFTOracle(address nftOracle) external; function getLendPoolLoan() external view returns (address); function setLendPoolLoanImpl(address loan, bytes memory encodedCallData) external; function getBNFTRegistry() external view returns (address); function setBNFTRegistry(address factory) external; function getIncentivesController() external view returns (address); function setIncentivesController(address controller) external; function getUIDataProvider() external view returns (address); function setUIDataProvider(address provider) external; function getBendDataProvider() external view returns (address); function setBendDataProvider(address provider) external; function getWalletBalanceProvider() external view returns (address); function setWalletBalanceProvider(address provider) external; }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.8.4; interface IWrapperGateway { /** * @dev Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower * already deposited enough collateral * - E.g. User borrows 100 USDC, receiving the 100 USDC in his wallet * and lock collateral asset in contract * @param reserveAsset The address of the underlying asset to borrow * @param amount The amount to be borrowed * @param nftTokenId The index of the ERC721 used as collteral * @param onBehalfOf Address of the user who will receive the loan. Should be the address of the borrower itself * calling the function if he wants to borrow against his own collateral, or the address of the credit delegator * if he has been given credit delegation allowance * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man **/ function borrow( address reserveAsset, uint256 amount, uint256 nftTokenId, address onBehalfOf, uint16 referralCode ) external; function batchBorrow( address[] calldata reserveAssets, uint256[] calldata amounts, uint256[] calldata nftTokenIds, address onBehalfOf, uint16 referralCode ) external; /** * @notice Repays a borrowed `amount` on a specific NFT, burning the equivalent loan owned * - E.g. User repays 100 USDC, burning loan and receives collateral asset * @param nftTokenId The index of the ERC721 used as collteral * @param amount The amount to repay * @return The final amount repaid, loan is burned or not **/ function repay(uint256 nftTokenId, uint256 amount) external returns (uint256, bool); function batchRepay(uint256[] calldata nftTokenIds, uint256[] calldata amounts) external returns (uint256[] memory, bool[] memory); /** * @notice auction a unhealth NFT loan with ERC20 reserve * @param nftTokenId The index of the ERC721 used as collteral * @param bidPrice The bid price **/ function auction( uint256 nftTokenId, uint256 bidPrice, address onBehalfOf ) external; /** * @notice redeem a unhealth NFT loan with ERC20 reserve * @param nftTokenId The index of the ERC721 used as collteral * @param amount The amount to repay the debt * @param bidFine The amount of bid fine **/ function redeem( uint256 nftTokenId, uint256 amount, uint256 bidFine ) external returns (uint256); /** * @notice liquidate a unhealth NFT loan with ERC20 reserve * @param nftTokenId The index of the ERC721 used as collteral **/ function liquidate(uint256 nftTokenId, uint256 amount) external returns (uint256); /** * @dev Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower * already deposited enough collateral * - E.g. User borrows 100 ETH, receiving the 100 ETH in his wallet * and lock collateral asset in contract * @param amount The amount to be borrowed * @param nftTokenId The index of the ERC721 to deposit * @param onBehalfOf Address of the user who will receive the loan. Should be the address of the borrower itself * calling the function if he wants to borrow against his own collateral, or the address of the credit delegator * if he has been given credit delegation allowance * @param referralCode Code used to register the integrator originating the operation, for potential rewards. * 0 if the action is executed directly by the user, without any middle-man **/ function borrowETH( uint256 amount, uint256 nftTokenId, address onBehalfOf, uint16 referralCode ) external; function batchBorrowETH( uint256[] calldata amounts, uint256[] calldata nftTokenIds, address onBehalfOf, uint16 referralCode ) external; /** * @notice Repays a borrowed `amount` on a specific NFT with native ETH * - E.g. User repays 100 ETH, burning loan and receives collateral asset * @param nftTokenId The index of the ERC721 to repay * @param amount The amount to repay * @return The final amount repaid, loan is burned or not **/ function repayETH(uint256 nftTokenId, uint256 amount) external payable returns (uint256, bool); function batchRepayETH(uint256[] calldata nftTokenIds, uint256[] calldata amounts) external payable returns (uint256[] memory, bool[] memory); /** * @notice auction a unhealth NFT loan with native ETH * @param nftTokenId The index of the ERC721 to repay * @param onBehalfOf Address of the user who will receive the ERC721. Should be the address of the user itself * calling the function if he wants to get collateral **/ function auctionETH(uint256 nftTokenId, address onBehalfOf) external payable; /** * @notice liquidate a unhealth NFT loan with native ETH * @param nftTokenId The index of the ERC721 to repay * @param amount The amount to repay the debt * @param bidFine The amount of bid fine **/ function redeemETH( uint256 nftTokenId, uint256 amount, uint256 bidFine ) external payable returns (uint256); /** * @notice liquidate a unhealth NFT loan with native ETH * @param nftTokenId The index of the ERC721 to repay **/ function liquidateETH(uint256 nftTokenId) external payable returns (uint256); }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.8.4; import {IERC721MetadataUpgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/IERC721MetadataUpgradeable.sol"; interface IERC721Wrapper is IERC721MetadataUpgradeable { function mint(uint256 tokenId) external; function burn(uint256 tokenId) external; }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.8.4; library DataTypes { struct ReserveData { //stores the reserve configuration ReserveConfigurationMap configuration; //the liquidity index. Expressed in ray uint128 liquidityIndex; //variable borrow index. Expressed in ray uint128 variableBorrowIndex; //the current supply rate. Expressed in ray uint128 currentLiquidityRate; //the current variable borrow rate. Expressed in ray uint128 currentVariableBorrowRate; uint40 lastUpdateTimestamp; //tokens addresses address bTokenAddress; address debtTokenAddress; //address of the interest rate strategy address interestRateAddress; //the id of the reserve. Represents the position in the list of the active reserves uint8 id; } struct NftData { //stores the nft configuration NftConfigurationMap configuration; //address of the bNFT contract address bNftAddress; //the id of the nft. Represents the position in the list of the active nfts uint8 id; uint256 maxSupply; uint256 maxTokenId; } struct ReserveConfigurationMap { //bit 0-15: LTV //bit 16-31: Liq. threshold //bit 32-47: Liq. bonus //bit 48-55: Decimals //bit 56: Reserve is active //bit 57: reserve is frozen //bit 58: borrowing is enabled //bit 59: stable rate borrowing enabled //bit 60-63: reserved //bit 64-79: reserve factor uint256 data; } struct NftConfigurationMap { //bit 0-15: LTV //bit 16-31: Liq. threshold //bit 32-47: Liq. bonus //bit 56: NFT is active //bit 57: NFT is frozen uint256 data; } /** * @dev Enum describing the current state of a loan * State change flow: * Created -> Active -> Repaid * -> Auction -> Defaulted */ enum LoanState { // We need a default that is not 'Created' - this is the zero value None, // The loan data is stored, but not initiated yet. Created, // The loan has been initialized, funds have been delivered to the borrower and the collateral is held. Active, // The loan is in auction, higest price liquidator will got chance to claim it. Auction, // The loan has been repaid, and the collateral has been returned to the borrower. This is a terminal state. Repaid, // The loan was delinquent and collateral claimed by the liquidator. This is a terminal state. Defaulted } struct LoanData { //the id of the nft loan uint256 loanId; //the current state of the loan LoanState state; //address of borrower address borrower; //address of nft asset token address nftAsset; //the id of nft token uint256 nftTokenId; //address of reserve asset token address reserveAsset; //scaled borrow amount. Expressed in ray uint256 scaledAmount; //start time of first bid time uint256 bidStartTimestamp; //bidder address of higest bid address bidderAddress; //price of higest bid uint256 bidPrice; //borrow amount of loan uint256 bidBorrowAmount; //bidder address of first bid address firstBidderAddress; } struct ExecuteDepositParams { address initiator; address asset; uint256 amount; address onBehalfOf; uint16 referralCode; } struct ExecuteWithdrawParams { address initiator; address asset; uint256 amount; address to; } struct ExecuteBorrowParams { address initiator; address asset; uint256 amount; address nftAsset; uint256 nftTokenId; address onBehalfOf; uint16 referralCode; } struct ExecuteBatchBorrowParams { address initiator; address[] assets; uint256[] amounts; address[] nftAssets; uint256[] nftTokenIds; address onBehalfOf; uint16 referralCode; } struct ExecuteRepayParams { address initiator; address nftAsset; uint256 nftTokenId; uint256 amount; } struct ExecuteBatchRepayParams { address initiator; address[] nftAssets; uint256[] nftTokenIds; uint256[] amounts; } struct ExecuteAuctionParams { address initiator; address nftAsset; uint256 nftTokenId; uint256 bidPrice; address onBehalfOf; } struct ExecuteRedeemParams { address initiator; address nftAsset; uint256 nftTokenId; uint256 amount; uint256 bidFine; } struct ExecuteLiquidateParams { address initiator; address nftAsset; uint256 nftTokenId; uint256 amount; } struct ExecuteLendPoolStates { uint256 pauseStartTime; uint256 pauseDurationTime; } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.8.4; interface IWETHGateway { /** * @dev deposits WETH into the reserve, using native ETH. A corresponding amount of the overlying asset (bTokens) * is minted. * @param onBehalfOf address of the user who will receive the bTokens representing the deposit * @param referralCode integrators are assigned a referral code and can potentially receive rewards. **/ function depositETH(address onBehalfOf, uint16 referralCode) external payable; /** * @dev withdraws the WETH _reserves of msg.sender. * @param amount amount of bWETH to withdraw and receive native ETH * @param to address of the user who will receive native ETH */ function withdrawETH(uint256 amount, address to) external; /** * @dev borrow WETH, unwraps to ETH and send both the ETH and DebtTokens to msg.sender, via `approveDelegation` and onBehalf argument in `LendPool.borrow`. * @param amount the amount of ETH to borrow * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token ID of the underlying NFT used as collateral * @param onBehalfOf Address of the user who will receive the loan. Should be the address of the borrower itself * calling the function if he wants to borrow against his own collateral, or the address of the credit delegator * if he has been given credit delegation allowance * @param referralCode integrators are assigned a referral code and can potentially receive rewards */ function borrowETH( uint256 amount, address nftAsset, uint256 nftTokenId, address onBehalfOf, uint16 referralCode ) external; function batchBorrowETH( uint256[] calldata amounts, address[] calldata nftAssets, uint256[] calldata nftTokenIds, address onBehalfOf, uint16 referralCode ) external; /** * @dev repays a borrow on the WETH reserve, for the specified amount (or for the whole amount, if uint256(-1) is specified). * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token ID of the underlying NFT used as collateral * @param amount the amount to repay, or uint256(-1) if the user wants to repay everything */ function repayETH( address nftAsset, uint256 nftTokenId, uint256 amount ) external payable returns (uint256, bool); function batchRepayETH( address[] calldata nftAssets, uint256[] calldata nftTokenIds, uint256[] calldata amounts ) external payable returns (uint256[] memory, bool[] memory); /** * @dev auction a borrow on the WETH reserve * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token ID of the underlying NFT used as collateral * @param onBehalfOf Address of the user who will receive the underlying NFT used as collateral. * Should be the address of the borrower itself calling the function if he wants to borrow against his own collateral. */ function auctionETH( address nftAsset, uint256 nftTokenId, address onBehalfOf ) external payable; /** * @dev redeems a borrow on the WETH reserve * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token ID of the underlying NFT used as collateral * @param amount The amount to repay the debt * @param bidFine The amount of bid fine */ function redeemETH( address nftAsset, uint256 nftTokenId, uint256 amount, uint256 bidFine ) external payable returns (uint256); /** * @dev liquidates a borrow on the WETH reserve * @param nftAsset The address of the underlying NFT used as collateral * @param nftTokenId The token ID of the underlying NFT used as collateral */ function liquidateETH(address nftAsset, uint256 nftTokenId) external payable returns (uint256); }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.8.4; import {OwnableUpgradeable} from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import {IERC20Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol"; import {IERC721Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC721/IERC721Upgradeable.sol"; import {SafeERC20Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol"; import {IPunks} from "../interfaces/IPunks.sol"; /** * @title EmergencyTokenRecovery * @notice Add Emergency Recovery Logic to contract implementation * @author Bend **/ abstract contract EmergencyTokenRecoveryUpgradeable is OwnableUpgradeable { using SafeERC20Upgradeable for IERC20Upgradeable; event EmergencyEtherTransfer(address indexed to, uint256 amount); function __EmergencyTokenRecovery_init() internal onlyInitializing { __Ownable_init(); } /** * @dev transfer ERC20 from the utility contract, for ERC20 recovery in case of stuck tokens due * direct transfers to the contract address. * @param token token to transfer * @param to recipient of the transfer * @param amount amount to send */ function emergencyERC20Transfer( address token, address to, uint256 amount ) external onlyOwner { IERC20Upgradeable(token).safeTransfer(to, amount); } /** * @dev transfer ERC721 from the utility contract, for ERC721 recovery in case of stuck tokens due * direct transfers to the contract address. * @param token token to transfer * @param to recipient of the transfer * @param id token id to send */ function emergencyERC721Transfer( address token, address to, uint256 id ) external onlyOwner { IERC721Upgradeable(token).safeTransferFrom(address(this), to, id); } /** * @dev transfer CryptoPunks from the utility contract, for punks recovery in case of stuck punks * due direct transfers to the contract address. * @param to recipient of the transfer * @param index punk index to send */ function emergencyPunksTransfer( address punks, address to, uint256 index ) external onlyOwner { IPunks(punks).transferPunk(to, index); } /** * @dev transfer native Ether from the utility contract, for native Ether recovery in case of stuck Ether * due selfdestructs or transfer ether to pre-computated contract address before deployment. * @param to recipient of the transfer * @param amount amount to send */ function emergencyEtherTransfer(address to, uint256 amount) external onlyOwner { (bool success, ) = to.call{value: amount}(new bytes(0)); require(success, "ETH_TRANSFER_FAILED"); emit EmergencyEtherTransfer(to, amount); } uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { __Context_init_unchained(); } function __Context_init_unchained() internal onlyInitializing { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/utils/Initializable.sol) pragma solidity ^0.8.0; import "../../utils/AddressUpgradeable.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To initialize the implementation contract, you can either invoke the * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() initializer {} * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Modifier to protect an initializer function from being invoked twice. */ modifier initializer() { // If the contract is initializing we ignore whether _initialized is set in order to support multiple // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the // contract may have been reentered. require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} modifier, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } function _isConstructor() private view returns (bool) { return !AddressUpgradeable.isContract(address(this)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165Upgradeable { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721ReceiverUpgradeable { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721Upgradeable.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721MetadataUpgradeable is IERC721Upgradeable { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.8.4; /** * @dev Interface for a permittable ERC721 contract * See https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC72 allowance (see {IERC721-allowance}) by * presenting a message signed by the account. By not relying on {IERC721-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IPunks { function balanceOf(address account) external view returns (uint256); function punkIndexToAddress(uint256 punkIndex) external view returns (address owner); function offerPunkForSaleToAddress( uint256 punkIndex, uint256 minSalePriceInWei, address toAddress ) external; function buyPunk(uint256 punkIndex) external; function transferPunk(address to, uint256 punkIndex) external; }
{ "optimizer": { "enabled": true, "runs": 200 }, "evmVersion": "istanbul", "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"EmergencyEtherTransfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"addressProvider","outputs":[{"internalType":"contract ILendPoolAddressesProvider","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"nftTokenId","type":"uint256"},{"internalType":"uint256","name":"bidPrice","type":"uint256"},{"internalType":"address","name":"onBehalfOf","type":"address"}],"name":"auction","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"nftTokenId","type":"uint256"},{"internalType":"address","name":"onBehalfOf","type":"address"}],"name":"auctionETH","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address[]","name":"callers","type":"address[]"},{"internalType":"bool","name":"flag","type":"bool"}],"name":"authorizeCallerWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"tokens","type":"address[]"}],"name":"authorizeLendPoolERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"reserveAssets","type":"address[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"},{"internalType":"uint256[]","name":"nftTokenIds","type":"uint256[]"},{"internalType":"address","name":"onBehalfOf","type":"address"},{"internalType":"uint16","name":"referralCode","type":"uint16"}],"name":"batchBorrow","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"amounts","type":"uint256[]"},{"internalType":"uint256[]","name":"nftTokenIds","type":"uint256[]"},{"internalType":"address","name":"onBehalfOf","type":"address"},{"internalType":"uint16","name":"referralCode","type":"uint16"}],"name":"batchBorrowETH","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"nftTokenIds","type":"uint256[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"name":"batchRepay","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"bool[]","name":"","type":"bool[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"nftTokenIds","type":"uint256[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"name":"batchRepayETH","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"bool[]","name":"","type":"bool[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"reserveAsset","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"nftTokenId","type":"uint256"},{"internalType":"address","name":"onBehalfOf","type":"address"},{"internalType":"uint16","name":"referralCode","type":"uint16"}],"name":"borrow","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"nftTokenId","type":"uint256"},{"internalType":"address","name":"onBehalfOf","type":"address"},{"internalType":"uint16","name":"referralCode","type":"uint16"}],"name":"borrowETH","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"emergencyERC20Transfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"emergencyERC721Transfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"emergencyEtherTransfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"punks","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"emergencyPunksTransfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addressProvider_","type":"address"},{"internalType":"address","name":"wethGateway_","type":"address"},{"internalType":"address","name":"underlyingToken_","type":"address"},{"internalType":"address","name":"wrappedToken_","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"caller","type":"address"}],"name":"isCallerInWhitelist","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"nftTokenId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"liquidate","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"nftTokenId","type":"uint256"}],"name":"liquidateETH","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"nftTokenId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"bidFine","type":"uint256"}],"name":"redeem","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"nftTokenId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"bidFine","type":"uint256"}],"name":"redeemETH","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"nftTokenId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"repay","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"nftTokenId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"repayETH","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"underlyingToken","outputs":[{"internalType":"contract IERC721Upgradeable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"wethGateway","outputs":[{"internalType":"contract IWETHGateway","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"wrappedToken","outputs":[{"internalType":"contract IERC721Wrapper","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]
Contract Creation Code
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Multichain Portfolio | 26 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.