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Contract Name:
AugustusRFQ
Compiler Version
v0.8.10+commit.fc410830
Optimization Enabled:
Yes with 1000000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
pragma solidity 0.8.10; import "@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol"; import "@openzeppelin/contracts/utils/cryptography/SignatureChecker.sol"; import "./IERC20Permit.sol"; contract AugustusRFQ is EIP712("AUGUSTUS RFQ", "1") { using SafeERC20 for IERC20; struct Order { uint256 nonceAndMeta; // Nonce and taker specific metadata uint128 expiry; address makerAsset; address takerAsset; address maker; address taker; // zero address on orders executable by anyone uint256 makerAmount; uint256 takerAmount; } // makerAsset and takerAsset are Packed structures // 0 - 159 bits are address // 160 - 161 bits are tokenType (0 ERC20, 1 ERC1155, 2 ERC721) struct OrderNFT { uint256 nonceAndMeta; // Nonce and taker specific metadata uint128 expiry; uint256 makerAsset; uint256 makerAssetId; // simply ignored in case of ERC20s uint256 takerAsset; uint256 takerAssetId; // simply ignored in case of ERC20s address maker; address taker; // zero address on orders executable by anyone uint256 makerAmount; uint256 takerAmount; } struct OrderInfo { Order order; bytes signature; uint256 takerTokenFillAmount; bytes permitTakerAsset; bytes permitMakerAsset; } struct OrderNFTInfo { OrderNFT order; bytes signature; uint256 takerTokenFillAmount; bytes permitTakerAsset; bytes permitMakerAsset; } uint256 constant public FILLED_ORDER = 1; uint256 constant public UNFILLED_ORDER = 0; // Keeps track of remaining amounts of each Order // 0 -> order unfilled / not exists // 1 -> order filled / cancelled mapping(address => mapping (bytes32 => uint256)) public remaining; bytes32 constant public RFQ_LIMIT_ORDER_TYPEHASH = keccak256( "Order(uint256 nonceAndMeta,uint128 expiry,address makerAsset,address takerAsset,address maker,address taker,uint256 makerAmount,uint256 takerAmount)" ); bytes32 constant public RFQ_LIMIT_NFT_ORDER_TYPEHASH = keccak256( "OrderNFT(uint256 nonceAndMeta,uint128 expiry,uint256 makerAsset,uint256 makerAssetId,uint256 takerAsset,uint256 takerAssetId,address maker,address taker,uint256 makerAmount,uint256 takerAmount)" ); event OrderCancelled(bytes32 indexed orderHash, address indexed maker); event OrderFilled( bytes32 indexed orderHash, address indexed maker, address makerAsset, uint256 makerAmount, address indexed taker, address takerAsset, uint256 takerAmount ); event OrderFilledNFT( bytes32 indexed orderHash, address indexed maker, uint256 makerAsset, uint256 makerAssetId, uint256 makerAmount, address indexed taker, uint256 takerAsset, uint256 takerAssetId, uint256 takerAmount ); function getRemainingOrderBalance(address maker, bytes32[] calldata orderHashes) external view returns(uint256[] memory remainingBalances) { remainingBalances = new uint256[](orderHashes.length); mapping (bytes32 => uint256) storage remainingMaker = remaining[maker]; for (uint i = 0; i < orderHashes.length; i++) { remainingBalances[i] = remainingMaker[orderHashes[i]]; } } /** * @notice Cancel one or more orders using orderHashes * @dev Cancelled orderHashes are marked as used * @dev Emits a Cancel event * @dev Out of gas may occur in arrays of length > 400 * @param orderHashes bytes32[] List of order hashes to cancel */ function cancelOrders(bytes32[] calldata orderHashes) external { for (uint256 i = 0; i < orderHashes.length; i++) { cancelOrder(orderHashes[i]); } } function cancelOrder(bytes32 orderHash) public { if (_cancelOrder(msg.sender, orderHash)) { emit OrderCancelled(orderHash, msg.sender); } } /** @dev Allows taker to partially fill an order @param order Order quote to fill @param signature Signature of the maker corresponding to the order @param takerTokenFillAmount Maximum taker token to fill this order with. */ function partialFillOrder( Order calldata order, bytes calldata signature, uint256 takerTokenFillAmount ) external returns(uint256 makerTokenFilledAmount) { return partialFillOrderWithTarget( order, signature, takerTokenFillAmount, msg.sender ); } /** @dev Allows taker to partially fill an NFT order @param order Order quote to fill @param signature Signature of the maker corresponding to the order @param takerTokenFillAmount Maximum taker token to fill this order with. */ function partialFillOrderNFT( OrderNFT calldata order, bytes calldata signature, uint256 takerTokenFillAmount ) external returns(uint256 makerTokenFilledAmount) { return partialFillOrderWithTargetNFT( order, signature, takerTokenFillAmount, msg.sender ); } /** @dev Same as `partialFillOrder` but it allows to specify the destination address @param order Order quote to fill @param signature Signature of the maker corresponding to the order @param takerTokenFillAmount Maximum taker token to fill this order with. @param target Address that will receive swap funds */ function partialFillOrderWithTarget( Order calldata order, bytes calldata signature, uint256 takerTokenFillAmount, address target ) public returns(uint256 makerTokenFilledAmount) { require(takerTokenFillAmount > 0 && takerTokenFillAmount <= order.takerAmount, "Invalid Taker amount"); makerTokenFilledAmount = (takerTokenFillAmount * order.makerAmount) / order.takerAmount; require(makerTokenFilledAmount > 0, "Maker token fill amount cannot be 0"); _fillOrder( order, signature, makerTokenFilledAmount, takerTokenFillAmount, target ); return makerTokenFilledAmount; } /** @dev Same as `partialFillOrderWithTarget` but it allows to pass permit @param order Order quote to fill @param signature Signature of the maker corresponding to the order @param takerTokenFillAmount Maximum taker token to fill this order with. @param target Address that will receive swap funds @param permitTakerAsset Permit calldata for taker @param permitMakerAsset Permit calldata for maker */ function partialFillOrderWithTargetPermit( Order calldata order, bytes calldata signature, uint256 takerTokenFillAmount, address target, bytes calldata permitTakerAsset, bytes calldata permitMakerAsset ) public returns(uint256 makerTokenFilledAmount) { require(takerTokenFillAmount > 0 && takerTokenFillAmount <= order.takerAmount, "Invalid Taker amount"); makerTokenFilledAmount = (takerTokenFillAmount * order.makerAmount) / order.takerAmount; require(makerTokenFilledAmount > 0, "Maker token fill amount cannot be 0"); _permit(order.takerAsset, permitTakerAsset); _permit(order.makerAsset, permitMakerAsset); _fillOrder( order, signature, makerTokenFilledAmount, takerTokenFillAmount, target ); return makerTokenFilledAmount; } /** @dev Same as `partialFillOrderNFT` but it allows to specify the destination address @param order Order quote to fill @param signature Signature of the maker corresponding to the order @param takerTokenFillAmount Maximum taker token to fill this order with. @param target Address that will receive swap funds */ function partialFillOrderWithTargetNFT( OrderNFT calldata order, bytes calldata signature, uint256 takerTokenFillAmount, address target ) public returns(uint256 makerTokenFilledAmount) { require(takerTokenFillAmount > 0 && takerTokenFillAmount <= order.takerAmount, "Invalid Taker amount"); makerTokenFilledAmount = (takerTokenFillAmount * order.makerAmount) / order.takerAmount; require(makerTokenFilledAmount > 0, "Maker token fill amount cannot be 0"); _fillOrderNFT( order, signature, makerTokenFilledAmount, takerTokenFillAmount, target ); return makerTokenFilledAmount; } /** @dev Same as `partialFillOrderWithTargetNFT` but it allows to pass token permits @param order Order quote to fill @param signature Signature of the maker corresponding to the order @param takerTokenFillAmount Maximum taker token to fill this order with. @param target Address that will receive swap funds @param permitTakerAsset Permit calldata for taker @param permitMakerAsset Permit calldata for maker */ function partialFillOrderWithTargetPermitNFT( OrderNFT calldata order, bytes calldata signature, uint256 takerTokenFillAmount, address target, bytes calldata permitTakerAsset, bytes calldata permitMakerAsset ) public returns(uint256 makerTokenFilledAmount) { require(takerTokenFillAmount > 0 && takerTokenFillAmount <= order.takerAmount, "Invalid Taker amount"); makerTokenFilledAmount = (takerTokenFillAmount * order.makerAmount) / order.takerAmount; require(makerTokenFilledAmount > 0, "Maker token fill amount cannot be 0"); _permit(address(uint160(order.takerAsset)), permitTakerAsset); _permit(address(uint160(order.makerAsset)), permitMakerAsset); _fillOrderNFT( order, signature, makerTokenFilledAmount, takerTokenFillAmount, target ); return makerTokenFilledAmount; } /** @dev Allows taker to fill complete RFQ order @param order Order quote to fill @param signature Signature of the maker corresponding to the order */ function fillOrder( Order calldata order, bytes calldata signature ) external { fillOrderWithTarget( order, signature, msg.sender ); } /** @dev Allows taker to fill Limit order @param order Order quote to fill @param signature Signature of the maker corresponding to the order */ function fillOrderNFT( OrderNFT calldata order, bytes calldata signature ) external { fillOrderWithTargetNFT( order, signature, msg.sender ); } /** @dev Same as fillOrder but allows sender to specify the target @param order Order quote to fill @param signature Signature of the maker corresponding to the order @param target Address of the receiver */ function fillOrderWithTarget( Order calldata order, bytes calldata signature, address target ) public { uint256 makerTokenFillAmount = order.makerAmount; uint256 takerTokenFillAmount = order.takerAmount; require(takerTokenFillAmount > 0 && makerTokenFillAmount > 0, "Invalid amount"); _fillOrder( order, signature, makerTokenFillAmount, takerTokenFillAmount, target ); } /** @dev Same as fillOrderNFT but allows sender to specify the target @param order Order quote to fill @param signature Signature of the maker corresponding to the order @param target Address of the receiver */ function fillOrderWithTargetNFT( OrderNFT calldata order, bytes calldata signature, address target ) public { uint256 makerTokenFillAmount = order.makerAmount; uint256 takerTokenFillAmount = order.takerAmount; require(takerTokenFillAmount > 0 && makerTokenFillAmount > 0, "Invalid amount"); _fillOrderNFT( order, signature, makerTokenFillAmount, takerTokenFillAmount, target ); } /** @dev Partial fill multiple orders @param orderInfos OrderInfo to fill @param target Address of receiver */ function batchFillOrderWithTarget( OrderInfo[] calldata orderInfos, address target ) public { for (uint256 i = 0; i < orderInfos.length; i++) { OrderInfo calldata orderInfo = orderInfos[i]; uint256 takerTokenFillAmountOrder = orderInfo.takerTokenFillAmount; require(takerTokenFillAmountOrder > 0 && takerTokenFillAmountOrder <= orderInfo.order.takerAmount, "Invalid Taker amount"); uint256 makerTokenFillAmountOrder = (takerTokenFillAmountOrder * orderInfo.order.makerAmount) / orderInfo.order.takerAmount; require(makerTokenFillAmountOrder > 0, "Maker token fill amount cannot be 0"); _permit(orderInfo.order.takerAsset, orderInfo.permitTakerAsset); _permit(orderInfo.order.makerAsset, orderInfo.permitMakerAsset); _fillOrder( orderInfo.order, orderInfo.signature, makerTokenFillAmountOrder, takerTokenFillAmountOrder, target ); } } /** @dev batch fills orders until the takerFillAmount is swapped @dev skip the order if it fails @param orderInfos OrderInfo to fill @param takerFillAmount total taker amount to fill @param target Address of receiver */ function tryBatchFillOrderTakerAmount( OrderInfo[] calldata orderInfos, uint256 takerFillAmount, address target ) public { for (uint256 i = 0; i < orderInfos.length; i++) { OrderInfo calldata orderInfo = orderInfos[i]; uint256 takerFillAmountOrder = takerFillAmount > orderInfo.takerTokenFillAmount ? orderInfo.takerTokenFillAmount : takerFillAmount; (bool success,) = address(this).delegatecall( abi.encodeWithSelector( this.partialFillOrderWithTargetPermit.selector, orderInfo.order, orderInfo.signature, takerFillAmountOrder, target, orderInfo.permitTakerAsset, orderInfo.permitMakerAsset ) ); if(success) takerFillAmount -= takerFillAmountOrder; if (takerFillAmount == 0) break; } require(takerFillAmount == 0, "Couldn't swap the requested fill amount"); } /** @dev batch fills orders until the makerFillAmount is swapped @dev skip the order if it fails @param orderInfos OrderInfo to fill @param makerFillAmount total maker amount to fill @param target Address of receiver */ function tryBatchFillOrderMakerAmount( OrderInfo[] calldata orderInfos, uint256 makerFillAmount, address target ) public { for (uint256 i = 0; i < orderInfos.length; i++) { OrderInfo calldata orderInfo = orderInfos[i]; uint256 orderMakerAmount = orderInfo.order.makerAmount; uint256 orderTakerAmount = orderInfo.order.takerAmount; uint256 maxMakerFillAmount = (orderInfo.takerTokenFillAmount * orderMakerAmount) / orderTakerAmount; uint256 makerFillAmountOrder = makerFillAmount > maxMakerFillAmount ? maxMakerFillAmount : makerFillAmount; uint256 takerFillAmountOrder = ((makerFillAmountOrder * orderTakerAmount) + (orderMakerAmount - 1)) / orderMakerAmount; (bool success,) = address(this).delegatecall( abi.encodeWithSelector( this.partialFillOrderWithTargetPermit.selector, orderInfo.order, orderInfo.signature, takerFillAmountOrder, target, orderInfo.permitTakerAsset, orderInfo.permitMakerAsset ) ); if(success) makerFillAmount -= makerFillAmountOrder; if (makerFillAmount == 0) break; } require(makerFillAmount == 0, "Couldn't swap the requested fill amount"); } /** @dev Partial fill multiple NFT orders @param orderInfos Info about each order to fill @param target Address of receiver */ function batchFillOrderWithTargetNFT( OrderNFTInfo[] calldata orderInfos, address target ) public { for (uint256 i = 0; i < orderInfos.length; i++) { OrderNFTInfo calldata orderInfo = orderInfos[i]; uint256 takerTokenFillAmountOrder = orderInfo.takerTokenFillAmount; require(takerTokenFillAmountOrder > 0 && takerTokenFillAmountOrder <= orderInfo.order.takerAmount, "Invalid Taker amount"); uint256 makerTokenFillAmountOrder = (takerTokenFillAmountOrder * orderInfo.order.makerAmount) / orderInfo.order.takerAmount; require(makerTokenFillAmountOrder > 0, "Maker token fill amount cannot be 0"); _permit(address(uint160(orderInfo.order.takerAsset)), orderInfo.permitTakerAsset); _permit(address(uint160(orderInfo.order.makerAsset)), orderInfo.permitMakerAsset); _fillOrderNFT( orderInfo.order, orderInfo.signature, makerTokenFillAmountOrder, takerTokenFillAmountOrder, target ); } } function _fillOrder( Order calldata order, bytes calldata signature, uint256 makerTokenFillAmount, uint256 takerTokenFillAmount, address target ) private { address maker = order.maker; bytes32 orderHash = _hashTypedDataV4(keccak256(abi.encode(RFQ_LIMIT_ORDER_TYPEHASH, order))); _checkOrder(maker, order.taker, orderHash, order.makerAmount, makerTokenFillAmount, order.expiry, signature); //Transfer tokens between maker and taker :) transferTokens(order.makerAsset, maker, target, makerTokenFillAmount); transferTokens(order.takerAsset, msg.sender, maker, takerTokenFillAmount); emit OrderFilled( orderHash, maker, order.makerAsset, makerTokenFillAmount, target, order.takerAsset, takerTokenFillAmount ); } function _fillOrderNFT( OrderNFT calldata order, bytes calldata signature, uint256 makerTokenFillAmount, uint256 takerTokenFillAmount, address target ) private { address maker = order.maker; bytes32 orderHash = _hashTypedDataV4(keccak256(abi.encode(RFQ_LIMIT_NFT_ORDER_TYPEHASH, order))); _checkOrder(maker, order.taker, orderHash, order.makerAmount, makerTokenFillAmount, order.expiry, signature); //Transfer tokens between maker and taker :) transferTokensNFT(order.makerAsset, maker, target, makerTokenFillAmount, order.makerAssetId); transferTokensNFT(order.takerAsset, msg.sender, maker, takerTokenFillAmount, order.takerAssetId); emit OrderFilledNFT( orderHash, maker, order.makerAsset, order.makerAssetId, makerTokenFillAmount, target, order.takerAsset, order.takerAssetId, takerTokenFillAmount ); } /** * @notice The function assumes orderAmount >= fillRequest, fillRequest > 0 * and the orderHash is computed correctly * @param maker address Address of the maker * @param taker address Address of the taker * @param orderHash bytes32 Hash of order * @param orderAmount uint256 Max amount the order can fill * @param fillRequest uint256 Amount requested for fill * @param signature bytes32 Signature for the orderhash */ function _checkOrder( address maker, address taker, bytes32 orderHash, uint256 orderAmount, uint256 fillRequest, uint128 expiry, bytes calldata signature ) internal { // Check time expiration require(expiry == 0 || block.timestamp <= expiry, "Order expired"); // Check if the taker of the order is correct require(taker == address(0) || taker == msg.sender, "Access denied"); mapping (bytes32 => uint256) storage remainingMaker = remaining[maker]; uint256 remainingAmount = remainingMaker[orderHash]; // You only need to check the signature of the order for the first time // For later you already know the orderHash coresponds to the signed order if(remainingAmount == UNFILLED_ORDER) { require(SignatureChecker.isValidSignatureNow(maker, orderHash, signature), "Invalid Signature"); remainingMaker[orderHash] = (orderAmount - fillRequest) + 1; } else { require(remainingAmount > fillRequest, "Order already filled or expired"); remainingMaker[orderHash] = remainingAmount - fillRequest; } } /** * @notice Set remaining[maker][orderHash] = FILLED_ORDER to cancel the order * @param maker address Address of the maker for which to cancel the order * @param orderHash bytes32 orderHash to be marked as used * @return bool True if the orderHash was not marked as used already */ function _cancelOrder( address maker, bytes32 orderHash ) internal returns (bool) { mapping (bytes32 => uint256) storage remainingMaker = remaining[maker]; if(remainingMaker[orderHash] == FILLED_ORDER) { return false; } remainingMaker[orderHash] = FILLED_ORDER; return true; } function transferTokens( address token, address from, address to, uint256 amount ) private { IERC20(token).safeTransferFrom( from, to, amount ); } function transferTokensNFT( uint256 token, address from, address to, uint256 amount, uint256 id ) private { uint256 tokenType = token >> 160; if (tokenType == 0) { IERC20(address(uint160(token))).safeTransferFrom( from, to, amount ); } else if (tokenType == 1) { IERC1155(address(uint160(token))).safeTransferFrom( from, to, id, amount, bytes("") ); } else if (tokenType == 2) { require(amount == 1, "Invalid amount for ERC721 transfer"); IERC721(address(uint160(token))).safeTransferFrom( from, to, id ); } else { revert("Invalid token type"); } } function _permit(address token, bytes memory permit) internal { if (permit.length == 32 * 7) { (bool success, ) = token.call(abi.encodePacked(IERC20Permit.permit.selector, permit)); require(success, "Permit failed"); } if (permit.length == 32 * 8) { (bool success, ) = token.call(abi.encodePacked(IERC20PermitLegacy.permit.selector, permit)); require(success, "Permit failed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/cryptography/draft-EIP712.sol) pragma solidity ^0.8.0; import "./ECDSA.sol"; /** * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data. * * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible, * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding * they need in their contracts using a combination of `abi.encode` and `keccak256`. * * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA * ({_hashTypedDataV4}). * * The implementation of the domain separator was designed to be as efficient as possible while still properly updating * the chain id to protect against replay attacks on an eventual fork of the chain. * * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask]. * * _Available since v3.4._ */ abstract contract EIP712 { /* solhint-disable var-name-mixedcase */ // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to // invalidate the cached domain separator if the chain id changes. bytes32 private immutable _CACHED_DOMAIN_SEPARATOR; uint256 private immutable _CACHED_CHAIN_ID; address private immutable _CACHED_THIS; bytes32 private immutable _HASHED_NAME; bytes32 private immutable _HASHED_VERSION; bytes32 private immutable _TYPE_HASH; /* solhint-enable var-name-mixedcase */ /** * @dev Initializes the domain separator and parameter caches. * * The meaning of `name` and `version` is specified in * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]: * * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol. * - `version`: the current major version of the signing domain. * * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart * contract upgrade]. */ constructor(string memory name, string memory version) { bytes32 hashedName = keccak256(bytes(name)); bytes32 hashedVersion = keccak256(bytes(version)); bytes32 typeHash = keccak256( "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)" ); _HASHED_NAME = hashedName; _HASHED_VERSION = hashedVersion; _CACHED_CHAIN_ID = block.chainid; _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion); _CACHED_THIS = address(this); _TYPE_HASH = typeHash; } /** * @dev Returns the domain separator for the current chain. */ function _domainSeparatorV4() internal view returns (bytes32) { if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) { return _CACHED_DOMAIN_SEPARATOR; } else { return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION); } } function _buildDomainSeparator( bytes32 typeHash, bytes32 nameHash, bytes32 versionHash ) private view returns (bytes32) { return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this))); } /** * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this * function returns the hash of the fully encoded EIP712 message for this domain. * * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example: * * ```solidity * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode( * keccak256("Mail(address to,string contents)"), * mailTo, * keccak256(bytes(mailContents)) * ))); * address signer = ECDSA.recover(digest, signature); * ``` */ function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) { return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../../../utils/Address.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 SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 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( IERC20 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( IERC20 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( IERC20 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(IERC20 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 v4.4.0 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @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 v4.4.0 (token/ERC1155/IERC1155.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC1155 compliant contract, as defined in the * https://eips.ethereum.org/EIPS/eip-1155[EIP]. * * _Available since v3.1._ */ interface IERC1155 is IERC165 { /** * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`. */ event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value); /** * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all * transfers. */ event TransferBatch( address indexed operator, address indexed from, address indexed to, uint256[] ids, uint256[] values ); /** * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to * `approved`. */ event ApprovalForAll(address indexed account, address indexed operator, bool approved); /** * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI. * * If an {URI} event was emitted for `id`, the standard * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value * returned by {IERC1155MetadataURI-uri}. */ event URI(string value, uint256 indexed id); /** * @dev Returns the amount of tokens of token type `id` owned by `account`. * * Requirements: * * - `account` cannot be the zero address. */ function balanceOf(address account, uint256 id) external view returns (uint256); /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}. * * Requirements: * * - `accounts` and `ids` must have the same length. */ function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids) external view returns (uint256[] memory); /** * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`, * * Emits an {ApprovalForAll} event. * * Requirements: * * - `operator` cannot be the caller. */ function setApprovalForAll(address operator, bool approved) external; /** * @dev Returns true if `operator` is approved to transfer ``account``'s tokens. * * See {setApprovalForAll}. */ function isApprovedForAll(address account, address operator) external view returns (bool); /** * @dev Transfers `amount` tokens of token type `id` from `from` to `to`. * * Emits a {TransferSingle} event. * * Requirements: * * - `to` cannot be the zero address. * - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}. * - `from` must have a balance of tokens of type `id` of at least `amount`. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the * acceptance magic value. */ function safeTransferFrom( address from, address to, uint256 id, uint256 amount, bytes calldata data ) external; /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}. * * Emits a {TransferBatch} event. * * Requirements: * * - `ids` and `amounts` must have the same length. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the * acceptance magic value. */ function safeBatchTransferFrom( address from, address to, uint256[] calldata ids, uint256[] calldata amounts, bytes calldata data ) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/cryptography/SignatureChecker.sol) pragma solidity ^0.8.0; import "./ECDSA.sol"; import "../Address.sol"; import "../../interfaces/IERC1271.sol"; /** * @dev Signature verification helper: Provide a single mechanism to verify both private-key (EOA) ECDSA signature and * ERC1271 contract signatures. Using this instead of ECDSA.recover in your contract will make them compatible with * smart contract wallets such as Argent and Gnosis. * * Note: unlike ECDSA signatures, contract signature's are revocable, and the outcome of this function can thus change * through time. It could return true at block N and false at block N+1 (or the opposite). * * _Available since v4.1._ */ library SignatureChecker { function isValidSignatureNow( address signer, bytes32 hash, bytes memory signature ) internal view returns (bool) { (address recovered, ECDSA.RecoverError error) = ECDSA.tryRecover(hash, signature); if (error == ECDSA.RecoverError.NoError && recovered == signer) { return true; } (bool success, bytes memory result) = signer.staticcall( abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, signature) ); return (success && result.length == 32 && abi.decode(result, (bytes4)) == IERC1271.isValidSignature.selector); } }
pragma solidity 0.8.10; interface IERC20Permit { function permit( address owner, address spender, uint256 amount, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; } interface IERC20PermitLegacy { function permit( address holder, address spender, uint256 nonce, uint256 expiry, bool allowed, uint8 v, bytes32 r, bytes32 s ) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return tryRecover(hash, r, vs); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s; uint8 v; assembly { s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) v := add(shr(255, vs), 27) } return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.0 (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @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 v4.4.0 (utils/Address.sol) pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @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 Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(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 v4.4.0 (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 IERC165 { /** * @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 v4.4.0 (interfaces/IERC1271.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC1271 standard signature validation method for * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271]. * * _Available since v4.1._ */ interface IERC1271 { /** * @dev Should return whether the signature provided is valid for the provided data * @param hash Hash of the data to be signed * @param signature Signature byte array associated with _data */ function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue); }
{ "optimizer": { "enabled": true, "runs": 1000000 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": {} }
Contract Security Audit
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AugustusRFQ.OrderInfo[]","name":"orderInfos","type":"tuple[]"},{"internalType":"address","name":"target","type":"address"}],"name":"batchFillOrderWithTarget","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"components":[{"internalType":"uint256","name":"nonceAndMeta","type":"uint256"},{"internalType":"uint128","name":"expiry","type":"uint128"},{"internalType":"uint256","name":"makerAsset","type":"uint256"},{"internalType":"uint256","name":"makerAssetId","type":"uint256"},{"internalType":"uint256","name":"takerAsset","type":"uint256"},{"internalType":"uint256","name":"takerAssetId","type":"uint256"},{"internalType":"address","name":"maker","type":"address"},{"internalType":"address","name":"taker","type":"address"},{"internalType":"uint256","name":"makerAmount","type":"uint256"},{"internalType":"uint256","name":"takerAmount","type":"uint256"}],"internalType":"struct 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AugustusRFQ.Order","name":"order","type":"tuple"},{"internalType":"bytes","name":"signature","type":"bytes"},{"internalType":"uint256","name":"takerTokenFillAmount","type":"uint256"},{"internalType":"bytes","name":"permitTakerAsset","type":"bytes"},{"internalType":"bytes","name":"permitMakerAsset","type":"bytes"}],"internalType":"struct AugustusRFQ.OrderInfo[]","name":"orderInfos","type":"tuple[]"},{"internalType":"uint256","name":"takerFillAmount","type":"uint256"},{"internalType":"address","name":"target","type":"address"}],"name":"tryBatchFillOrderTakerAmount","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Multichain Portfolio | 30 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.