{ "contractName": "Forwarder", "abi": [ { "inputs": [], "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "bytes32", "name": "domainSeparator", "type": "bytes32" }, { "indexed": false, "internalType": "bytes", "name": "domainValue", "type": "bytes" } ], "name": "DomainRegistered", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "bytes32", "name": "typeHash", "type": "bytes32" }, { "indexed": false, "internalType": "string", "name": "typeStr", "type": "string" } ], "name": "RequestTypeRegistered", "type": "event" }, { "inputs": [], "name": "EIP712_DOMAIN_TYPE", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "GENERIC_PARAMS", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "bytes32", "name": "", "type": "bytes32" } ], "name": "domains", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "bytes32", "name": "", "type": "bytes32" } ], "name": "typeHashes", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" }, { "stateMutability": "payable", "type": "receive" }, { "inputs": [ { "internalType": "address", "name": "from", "type": "address" } ], "name": "getNonce", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "bytes4", "name": "interfaceId", "type": "bytes4" } ], "name": "supportsInterface", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "components": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "value", "type": "uint256" }, { "internalType": "uint256", "name": "gas", "type": "uint256" }, { "internalType": "uint256", "name": "nonce", "type": "uint256" }, { "internalType": "bytes", "name": "data", "type": "bytes" }, { "internalType": "uint256", "name": "validUntilTime", "type": "uint256" } ], "internalType": "struct IForwarder.ForwardRequest", "name": "req", "type": "tuple" }, { "internalType": "bytes32", "name": "domainSeparator", "type": "bytes32" }, { "internalType": "bytes32", "name": "requestTypeHash", "type": "bytes32" }, { "internalType": "bytes", "name": "suffixData", "type": "bytes" }, { "internalType": "bytes", "name": "sig", "type": "bytes" } ], "name": "verify", "outputs": [], "stateMutability": "view", "type": "function" }, { "inputs": [ { "components": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "value", "type": "uint256" }, { "internalType": "uint256", "name": "gas", "type": "uint256" }, { "internalType": "uint256", "name": "nonce", "type": "uint256" }, { "internalType": "bytes", "name": "data", "type": "bytes" }, { "internalType": "uint256", "name": "validUntilTime", "type": "uint256" } ], "internalType": "struct IForwarder.ForwardRequest", "name": "req", "type": "tuple" }, { "internalType": "bytes32", "name": "domainSeparator", "type": "bytes32" }, { "internalType": "bytes32", "name": "requestTypeHash", "type": "bytes32" }, { "internalType": "bytes", "name": "suffixData", "type": "bytes" }, { "internalType": "bytes", "name": "sig", "type": "bytes" } ], "name": "execute", "outputs": [ { "internalType": "bool", "name": "success", "type": "bool" }, { "internalType": "bytes", "name": "ret", "type": "bytes" } ], "stateMutability": "payable", "type": "function" }, { "inputs": [ { "internalType": "string", "name": "typeName", "type": "string" }, { "internalType": "string", "name": "typeSuffix", "type": "string" } ], "name": "registerRequestType", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "string", "name": "name", "type": "string" }, { "internalType": "string", "name": "version", "type": "string" } ], "name": "registerDomainSeparator", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "components": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "value", "type": "uint256" }, { "internalType": "uint256", "name": "gas", "type": "uint256" }, { "internalType": "uint256", "name": "nonce", "type": "uint256" }, { "internalType": "bytes", "name": "data", "type": "bytes" }, { "internalType": "uint256", "name": "validUntilTime", "type": "uint256" } ], "internalType": "struct IForwarder.ForwardRequest", "name": "req", "type": "tuple" }, { "internalType": "bytes32", "name": "requestTypeHash", "type": "bytes32" }, { "internalType": "bytes", "name": "suffixData", "type": "bytes" } ], "name": "_getEncoded", "outputs": [ { "internalType": "bytes", "name": "", "type": "bytes" } ], "stateMutability": "pure", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.8.7+commit.e28d00a7\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"domainSeparator\",\"type\":\"bytes32\"},{\"indexed\":false,\"internalType\":\"bytes\",\"name\":\"domainValue\",\"type\":\"bytes\"}],\"name\":\"DomainRegistered\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"typeHash\",\"type\":\"bytes32\"},{\"indexed\":false,\"internalType\":\"string\",\"name\":\"typeStr\",\"type\":\"string\"}],\"name\":\"RequestTypeRegistered\",\"type\":\"event\"},{\"inputs\":[],\"name\":\"EIP712_DOMAIN_TYPE\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"GENERIC_PARAMS\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"gas\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"},{\"internalType\":\"uint256\",\"name\":\"validUntilTime\",\"type\":\"uint256\"}],\"internalType\":\"struct IForwarder.ForwardRequest\",\"name\":\"req\",\"type\":\"tuple\"},{\"internalType\":\"bytes32\",\"name\":\"requestTypeHash\",\"type\":\"bytes32\"},{\"internalType\":\"bytes\",\"name\":\"suffixData\",\"type\":\"bytes\"}],\"name\":\"_getEncoded\",\"outputs\":[{\"internalType\":\"bytes\",\"name\":\"\",\"type\":\"bytes\"}],\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"domains\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"gas\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"},{\"internalType\":\"uint256\",\"name\":\"validUntilTime\",\"type\":\"uint256\"}],\"internalType\":\"struct IForwarder.ForwardRequest\",\"name\":\"req\",\"type\":\"tuple\"},{\"internalType\":\"bytes32\",\"name\":\"domainSeparator\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"requestTypeHash\",\"type\":\"bytes32\"},{\"internalType\":\"bytes\",\"name\":\"suffixData\",\"type\":\"bytes\"},{\"internalType\":\"bytes\",\"name\":\"sig\",\"type\":\"bytes\"}],\"name\":\"execute\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"success\",\"type\":\"bool\"},{\"internalType\":\"bytes\",\"name\":\"ret\",\"type\":\"bytes\"}],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"}],\"name\":\"getNonce\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"string\",\"name\":\"name\",\"type\":\"string\"},{\"internalType\":\"string\",\"name\":\"version\",\"type\":\"string\"}],\"name\":\"registerDomainSeparator\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"string\",\"name\":\"typeName\",\"type\":\"string\"},{\"internalType\":\"string\",\"name\":\"typeSuffix\",\"type\":\"string\"}],\"name\":\"registerRequestType\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"typeHashes\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"gas\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"},{\"internalType\":\"uint256\",\"name\":\"validUntilTime\",\"type\":\"uint256\"}],\"internalType\":\"struct IForwarder.ForwardRequest\",\"name\":\"req\",\"type\":\"tuple\"},{\"internalType\":\"bytes32\",\"name\":\"domainSeparator\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"requestTypeHash\",\"type\":\"bytes32\"},{\"internalType\":\"bytes\",\"name\":\"suffixData\",\"type\":\"bytes\"},{\"internalType\":\"bytes\",\"name\":\"sig\",\"type\":\"bytes\"}],\"name\":\"verify\",\"outputs\":[],\"stateMutability\":\"view\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"}],\"devdoc\":{\"kind\":\"dev\",\"methods\":{\"execute((address,address,uint256,uint256,uint256,bytes,uint256),bytes32,bytes32,bytes,bytes)\":{\"params\":{\"domainSeparator\":\"The domain used when signing this request.\",\"forwardRequest\":\"All requested transaction parameters.\",\"requestTypeHash\":\"The request type used when signing this request.\",\"signature\":\"The client signature to be validated.\",\"suffixData\":\"The ABI-encoded extension data for the current `RequestType` used when signing this request.\"},\"returns\":{\"ret\":\"The byte array returned by the underlying `CALL` to the target address.\",\"success\":\"The success flag of the underlying `CALL` to the target address.\"}},\"getNonce(address)\":{\"params\":{\"from\":\"The address of a sender.\"},\"returns\":{\"_0\":\"The nonce for this address.\"}},\"registerDomainSeparator(string,string)\":{\"params\":{\"name\":\"The domain's display name.\",\"version\":\"The domain/protocol version.\"}},\"registerRequestType(string,string)\":{\"params\":{\"typeName\":\"The name of the request type.\",\"typeSuffix\":\"Any extra data after the generic params. Must contain add at least one param. The generic ForwardRequest type is always registered by the constructor.\"}},\"supportsInterface(bytes4)\":{\"details\":\"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.\"}},\"title\":\"The Forwarder Implementation\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{\"_getEncoded((address,address,uint256,uint256,uint256,bytes,uint256),bytes32,bytes)\":{\"notice\":\"Creates a byte array that is a valid ABI encoding of a request of a `RequestType` type. See `execute()`.\"},\"execute((address,address,uint256,uint256,uint256,bytes,uint256),bytes32,bytes32,bytes,bytes)\":{\"notice\":\"Executes a transaction specified by the `ForwardRequest`. The transaction is first verified and then executed. The success flag and returned bytes array of the `CALL` are returned as-is. This method would revert only in case of a verification error. All the target errors are reported using the returned success flag and returned bytes array.\"},\"registerDomainSeparator(string,string)\":{\"notice\":\"Register a new domain separator.This is necessary for the Forwarder to be able to verify the signatures conforming to the ERC-712.The domain separator must have the following fields: `name`, `version`, `chainId`, `verifyingContract`. The `chainId` is the current network's `chainId`, and the `verifyingContract` is this Forwarder's address. This method accepts the domain name and version to create and register the domain separator value.\"},\"registerRequestType(string,string)\":{\"notice\":\"Register a new Request typehash.This is necessary for the Forwarder to be able to verify the signatures conforming to the ERC-712.\"},\"verify((address,address,uint256,uint256,uint256,bytes,uint256),bytes32,bytes32,bytes,bytes)\":{\"notice\":\"Verify the transaction is valid and can be executed. Implementations must validate the signature and the nonce of the request are correct. Does not revert and returns successfully if the input is valid. Reverts if any validation has failed. For instance, if either signature or nonce are incorrect. Reverts if `domainSeparator` or `requestTypeHash` are not registered as well.\"}},\"notice\":\"This implementation of the `IForwarder` interface uses ERC-712 signatures and stored nonces for 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"source": "pragma solidity ^0.8.0;\npragma abicoder v2;\n\n// solhint-disable not-rely-on-time\n// SPDX-License-Identifier: GPL-3.0-only\n\nimport \"@openzeppelin/contracts/utils/cryptography/ECDSA.sol\";\nimport \"@openzeppelin/contracts/utils/introspection/ERC165.sol\";\n\nimport \"hardhat/console.sol\";\n\nimport \"./IForwarder.sol\";\n\n/**\n * @title The Forwarder Implementation\n * @notice This implementation of the `IForwarder` interface uses ERC-712 signatures and stored nonces for verification.\n */\ncontract Forwarder is IForwarder, ERC165 {\n using ECDSA for bytes32;\n\n address private constant DRY_RUN_ADDRESS = 0x0000000000000000000000000000000000000000;\n\n string public constant GENERIC_PARAMS = \"address from,address to,uint256 value,uint256 gas,uint256 nonce,bytes data,uint256 validUntilTime\";\n\n string public constant EIP712_DOMAIN_TYPE = \"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\";\n\n mapping(bytes32 => bool) public typeHashes;\n mapping(bytes32 => bool) public domains;\n\n // Nonces of senders, used to prevent replay attacks\n mapping(address => uint256) private nonces;\n\n // solhint-disable-next-line no-empty-blocks\n receive() external payable {}\n\n /// @inheritdoc IForwarder\n function getNonce(address from)\n public view override\n returns (uint256) {\n return nonces[from];\n }\n\n constructor() {\n string memory requestType = string(abi.encodePacked(\"ForwardRequest(\", GENERIC_PARAMS, \")\"));\n registerRequestTypeInternal(requestType);\n }\n\n /// @inheritdoc IERC165\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) {\n return interfaceId == type(IForwarder).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /// @inheritdoc IForwarder\n function verify(\n ForwardRequest calldata req,\n bytes32 domainSeparator,\n bytes32 requestTypeHash,\n bytes calldata suffixData,\n bytes calldata sig)\n external override view {\n _verifyNonce(req);\n _verifySig(req, domainSeparator, requestTypeHash, suffixData, sig);\n }\n\n /// @inheritdoc IForwarder\n function execute(\n ForwardRequest calldata req,\n bytes32 domainSeparator,\n bytes32 requestTypeHash,\n bytes calldata suffixData,\n bytes calldata sig\n )\n external payable\n override\n returns (bool success, bytes memory ret) {\n _verifySig(req, domainSeparator, requestTypeHash, suffixData, sig);\n _verifyAndUpdateNonce(req);\n\n require(req.validUntilTime == 0 || req.validUntilTime > block.timestamp, \"FWD: request expired\");\n\n uint256 gasForTransfer = 0;\n if ( req.value != 0 ) {\n gasForTransfer = 40000; //buffer in case we need to move eth after the transaction.\n }\n bytes memory callData = abi.encodePacked(req.data, req.from);\n require(gasleft()*63/64 >= req.gas + gasForTransfer, \"FWD: insufficient gas\");\n // solhint-disable-next-line avoid-low-level-calls\n (success,ret) = req.to.call{gas : req.gas, value : req.value}(callData);\n\n console.log(\"execute result: success: %s ret:\", success);\n console.logBytes(ret);\n\n if ( req.value != 0 && address(this).balance>0 ) {\n // can't fail: req.from signed (off-chain) the request, so it must be an EOA...\n payable(req.from).transfer(address(this).balance);\n }\n\n return (success,ret);\n }\n\n function _verifyNonce(ForwardRequest calldata req) internal view {\n require(nonces[req.from] == req.nonce, \"FWD: nonce mismatch\");\n }\n\n function _verifyAndUpdateNonce(ForwardRequest calldata req) internal {\n require(nonces[req.from]++ == req.nonce, \"FWD: nonce mismatch\");\n }\n\n /// @inheritdoc IForwarder\n function registerRequestType(string calldata typeName, string calldata typeSuffix) external override {\n\n for (uint256 i = 0; i < bytes(typeName).length; i++) {\n bytes1 c = bytes(typeName)[i];\n require(c != \"(\" && c != \")\", \"FWD: invalid typename\");\n }\n\n string memory requestType = string(abi.encodePacked(typeName, \"(\", GENERIC_PARAMS, \",\", typeSuffix));\n registerRequestTypeInternal(requestType);\n }\n\n /// @inheritdoc IForwarder\n function registerDomainSeparator(string calldata name, string calldata version) external override {\n uint256 chainId;\n /* solhint-disable-next-line no-inline-assembly */\n assembly { chainId := chainid() }\n\n bytes memory domainValue = abi.encode(\n keccak256(bytes(EIP712_DOMAIN_TYPE)),\n keccak256(bytes(name)),\n keccak256(bytes(version)),\n chainId,\n address(this));\n\n bytes32 domainHash = keccak256(domainValue);\n\n domains[domainHash] = true;\n emit DomainRegistered(domainHash, domainValue);\n }\n\n function registerRequestTypeInternal(string memory requestType) internal {\n\n bytes32 requestTypehash = keccak256(bytes(requestType));\n typeHashes[requestTypehash] = true;\n emit RequestTypeRegistered(requestTypehash, requestType);\n }\n\n function _verifySig(\n ForwardRequest calldata req,\n bytes32 domainSeparator,\n bytes32 requestTypeHash,\n bytes calldata suffixData,\n bytes calldata sig)\n internal\n virtual\n view\n {\n require(domains[domainSeparator], \"FWD: unregistered domain sep.\");\n require(typeHashes[requestTypeHash], \"FWD: unregistered typehash\");\n bytes32 digest = keccak256(abi.encodePacked(\n \"\\x19\\x01\", domainSeparator,\n keccak256(_getEncoded(req, requestTypeHash, suffixData))\n ));\n // solhint-disable-next-line avoid-tx-origin\n require(tx.origin == DRY_RUN_ADDRESS || digest.recover(sig) == req.from, \"FWD: signature mismatch\");\n }\n\n /**\n * @notice Creates a byte array that is a valid ABI encoding of a request of a `RequestType` type. See `execute()`.\n */\n function _getEncoded(\n ForwardRequest calldata req,\n bytes32 requestTypeHash,\n bytes calldata suffixData\n )\n public\n pure\n returns (\n bytes memory\n ) {\n // we use encodePacked since we append suffixData as-is, not as dynamic param.\n // still, we must make sure all first params are encoded as abi.encode()\n // would encode them - as 256-bit-wide params.\n return abi.encodePacked(\n requestTypeHash,\n uint256(uint160(req.from)),\n uint256(uint160(req.to)),\n req.value,\n req.gas,\n req.nonce,\n keccak256(req.data),\n req.validUntilTime,\n suffixData\n );\n }\n}", "sourcePath": "/Users/alexf/gsn2/packages/contracts/solpp/forwarder/Forwarder.sol", "ast": { "absolutePath": "/Users/alexf/gsn2/packages/contracts/solpp/forwarder/Forwarder.sol", "exportedSymbols": { "ECDSA": [ 12122 ], "ERC165": [ 12146 ], "Forwarder": [ 5036 ], "IERC165": [ 12352 ], "IForwarder": [ 5129 ], "Strings": [ 11734 ], "console": [ 20920 ] }, "id": 5037, "license": "GPL-3.0-only", 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"scope": 5037, "sourceUnit": 20921, "src": "252:29:8", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/Users/alexf/gsn2/packages/contracts/solpp/forwarder/IForwarder.sol", "file": "./IForwarder.sol", "id": 4473, "nameLocation": "-1:-1:-1", "nodeType": "ImportDirective", "scope": 5037, "sourceUnit": 5130, "src": "283:26:8", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "baseName": { "id": 4475, "name": "IForwarder", "nodeType": "IdentifierPath", "referencedDeclaration": 5129, "src": "501:10:8" }, "id": 4476, "nodeType": "InheritanceSpecifier", "src": "501:10:8" }, { "baseName": { "id": 4477, "name": "ERC165", "nodeType": "IdentifierPath", "referencedDeclaration": 12146, "src": "513:6:8" }, "id": 4478, "nodeType": "InheritanceSpecifier", "src": "513:6:8" } ], "contractDependencies": [], "contractKind": "contract", "documentation": { "id": 4474, "nodeType": "StructuredDocumentation", "src": "311:167:8", "text": " @title The Forwarder Implementation\n @notice This implementation of the `IForwarder` interface uses ERC-712 signatures and stored nonces for verification." }, "fullyImplemented": true, "id": 5036, "linearizedBaseContracts": [ 5036, 12146, 5129, 12352 ], "name": "Forwarder", "nameLocation": "488:9:8", "nodeType": "ContractDefinition", "nodes": [ { "id": 4481, "libraryName": { "id": 4479, "name": "ECDSA", "nodeType": "IdentifierPath", "referencedDeclaration": 12122, "src": "532:5:8" }, "nodeType": "UsingForDirective", "src": "526:24:8", "typeName": { "id": 4480, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "542:7:8", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } }, { "constant": true, "id": 4484, "mutability": "constant", "name": "DRY_RUN_ADDRESS", "nameLocation": "581:15:8", "nodeType": "VariableDeclaration", "scope": 5036, "src": "556:85:8", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4482, "name": "address", "nodeType": "ElementaryTypeName", "src": "556:7:8", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": { "hexValue": "307830303030303030303030303030303030303030303030303030303030303030303030303030303030", "id": 4483, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "599:42:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "value": "0x0000000000000000000000000000000000000000" }, "visibility": "private" }, { "constant": true, "functionSelector": "066a310c", "id": 4487, "mutability": "constant", "name": "GENERIC_PARAMS", "nameLocation": "671:14:8", "nodeType": "VariableDeclaration", "scope": 5036, "src": "648:139:8", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 4485, "name": "string", "nodeType": "ElementaryTypeName", "src": "648:6:8", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": { "hexValue": "616464726573732066726f6d2c6164647265737320746f2c75696e743235362076616c75652c75696e74323536206761732c75696e74323536206e6f6e63652c627974657320646174612c75696e743235362076616c6964556e74696c54696d65", "id": 4486, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "688:99:8", "typeDescriptions": { "typeIdentifier": "t_stringliteral_33f12fe95872be7be9c474c0e99a56a1b0cad386a14d26df2bb11622e5368f9b", "typeString": "literal_string \"address from,address to,uint256 value,uint256 gas,uint256 nonce,bytes data,uint256 validUntilTime\"" }, "value": "address from,address to,uint256 value,uint256 gas,uint256 nonce,bytes data,uint256 validUntilTime" }, "visibility": "public" }, { "constant": true, "functionSelector": "c3f28abd", "id": 4490, "mutability": "constant", "name": "EIP712_DOMAIN_TYPE", "nameLocation": "817:18:8", "nodeType": "VariableDeclaration", "scope": 5036, "src": "794:128:8", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 4488, "name": "string", "nodeType": "ElementaryTypeName", "src": "794:6:8", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": { "hexValue": "454950373132446f6d61696e28737472696e67206e616d652c737472696e672076657273696f6e2c75696e7432353620636861696e49642c6164647265737320766572696679696e67436f6e747261637429", "id": 4489, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "838:84:8", "typeDescriptions": { "typeIdentifier": "t_stringliteral_8b73c3c69bb8fe3d512ecc4cf759cc79239f7b179b0ffacaa9a75d522b39400f", "typeString": "literal_string \"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\"" }, "value": "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)" }, "visibility": "public" }, { "constant": false, "functionSelector": "21fe98df", "id": 4494, "mutability": "mutable", "name": "typeHashes", "nameLocation": "961:10:8", "nodeType": "VariableDeclaration", "scope": 5036, "src": "929:42:8", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_bool_$", "typeString": "mapping(bytes32 => bool)" }, "typeName": { "id": 4493, "keyType": { "id": 4491, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "937:7:8", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Mapping", "src": "929:24:8", "typeDescriptions": { "typeIdentifier": 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"overloadedDeclarations": [], "referencedDeclaration": 4294967288, "src": "5617:9:8", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 4968, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5617:160:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "5600:177:8" }, { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 4982, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 4974, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "id": 4971, "name": "tx", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967270, "src": "5848:2:8", "typeDescriptions": { "typeIdentifier": "t_magic_transaction", "typeString": "tx" } }, "id": 4972, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "origin", "nodeType": "MemberAccess", "src": "5848:9:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "id": 4973, "name": "DRY_RUN_ADDRESS", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4484, "src": "5861:15:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "5848:28:8", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 4981, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 4977, "name": "sig", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4936, "src": "5895:3:8", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } ], "expression": { "id": 4975, "name": "digest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4954, "src": "5880:6:8", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 4976, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "recover", "nodeType": "MemberAccess", "referencedDeclaration": 11871, "src": "5880:14:8", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_bytes_memory_ptr_$returns$_t_address_$bound_to$_t_bytes32_$", "typeString": "function (bytes32,bytes memory) pure returns (address)" } }, "id": 4978, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5880:19:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 4979, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4928, "src": "5903:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 4980, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "from", "nodeType": "MemberAccess", "referencedDeclaration": 5045, "src": "5903:8:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "5880:31:8", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "5848:63:8", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4657443a207369676e6174757265206d69736d61746368", "id": 4983, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5913:25:8", "typeDescriptions": { "typeIdentifier": "t_stringliteral_a309cac733f4697166c19648d49cb610f9d6044ca84e2283a12d8c0e1af506c4", "typeString": "literal_string \"FWD: signature mismatch\"" }, "value": "FWD: signature mismatch" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_a309cac733f4697166c19648d49cb610f9d6044ca84e2283a12d8c0e1af506c4", "typeString": "literal_string \"FWD: signature mismatch\"" } ], "id": 4970, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "5840:7:8", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 4984, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5840:99:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4985, "nodeType": "ExpressionStatement", "src": "5840:99:8" } ] }, "id": 4987, "implemented": true, "kind": "function", "modifiers": [], "name": "_verifySig", "nameLocation": "5222:10:8", "nodeType": "FunctionDefinition", "parameters": { "id": 4937, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4928, "mutability": "mutable", "name": "req", "nameLocation": "5266:3:8", "nodeType": "VariableDeclaration", "scope": 4987, "src": "5242:27:8", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest" }, "typeName": { "id": 4927, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 4926, "name": "ForwardRequest", "nodeType": "IdentifierPath", "referencedDeclaration": 5058, "src": "5242:14:8" }, "referencedDeclaration": 5058, "src": "5242:14:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_storage_ptr", "typeString": "struct IForwarder.ForwardRequest" } }, "visibility": "internal" }, { "constant": false, "id": 4930, "mutability": "mutable", "name": "domainSeparator", "nameLocation": "5287:15:8", "nodeType": "VariableDeclaration", "scope": 4987, "src": "5279:23:8", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 4929, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5279:7:8", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 4932, "mutability": "mutable", "name": "requestTypeHash", "nameLocation": "5320:15:8", "nodeType": "VariableDeclaration", "scope": 4987, "src": "5312:23:8", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 4931, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5312:7:8", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 4934, "mutability": "mutable", "name": "suffixData", "nameLocation": "5360:10:8", "nodeType": "VariableDeclaration", "scope": 4987, "src": "5345:25:8", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 4933, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "5345:5:8", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 4936, "mutability": "mutable", "name": "sig", "nameLocation": "5395:3:8", "nodeType": "VariableDeclaration", "scope": 4987, "src": "5380:18:8", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 4935, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "5380:5:8", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "5232:167:8" }, "returnParameters": { "id": 4938, "nodeType": "ParameterList", "parameters": [], "src": "5438:0:8" }, "scope": 5036, "src": "5213:733:8", "stateMutability": "view", "virtual": true, "visibility": "internal" }, { "body": { "id": 5034, "nodeType": "Block", "src": "6281:536:8", "statements": [ { "expression": { "arguments": [ { "id": 5002, "name": "requestTypeHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4993, "src": "6551:15:8", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "arguments": [ { "arguments": [ { "expression": { "id": 5007, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6596:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5008, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "from", "nodeType": "MemberAccess", "referencedDeclaration": 5045, "src": "6596:8:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5006, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6588:7:8", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint160_$", "typeString": "type(uint160)" }, "typeName": { "id": 5005, "name": "uint160", "nodeType": "ElementaryTypeName", "src": "6588:7:8", "typeDescriptions": {} } }, "id": 5009, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6588:17:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint160", "typeString": "uint160" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint160", "typeString": "uint160" } ], "id": 5004, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6580:7:8", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 5003, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6580:7:8", "typeDescriptions": {} } }, "id": 5010, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6580:26:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "arguments": [ { "arguments": [ { "expression": { "id": 5015, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6636:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5016, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "to", "nodeType": "MemberAccess", "referencedDeclaration": 5047, "src": "6636:6:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5014, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6628:7:8", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint160_$", "typeString": "type(uint160)" }, "typeName": { "id": 5013, "name": "uint160", "nodeType": "ElementaryTypeName", "src": "6628:7:8", "typeDescriptions": {} } }, "id": 5017, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6628:15:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint160", "typeString": "uint160" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint160", "typeString": "uint160" } ], "id": 5012, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6620:7:8", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 5011, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6620:7:8", "typeDescriptions": {} } }, "id": 5018, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6620:24:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "expression": { "id": 5019, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6658:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5020, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "value", "nodeType": "MemberAccess", "referencedDeclaration": 5049, "src": "6658:9:8", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "expression": { "id": 5021, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6681:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5022, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "gas", "nodeType": "MemberAccess", "referencedDeclaration": 5051, "src": "6681:7:8", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "expression": { "id": 5023, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6702:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5024, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "nonce", "nodeType": "MemberAccess", "referencedDeclaration": 5053, "src": "6702:9:8", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "arguments": [ { "expression": { "id": 5026, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6735:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5027, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "referencedDeclaration": 5055, "src": "6735:8:8", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } ], "id": 5025, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967288, "src": "6725:9:8", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 5028, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6725:19:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "expression": { "id": 5029, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6758:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5030, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "validUntilTime", "nodeType": "MemberAccess", "referencedDeclaration": 5057, "src": "6758:18:8", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 5031, "name": "suffixData", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4995, "src": "6790:10:8", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } ], "expression": { "id": 5000, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "6521:3:8", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 5001, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "6521:16:8", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 5032, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6521:289:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "functionReturnParameters": 4999, "id": 5033, "nodeType": "Return", "src": "6514:296:8" } ] }, "documentation": { "id": 4988, "nodeType": "StructuredDocumentation", "src": "5952:131:8", "text": " @notice Creates a byte array that is a valid ABI encoding of a request of a `RequestType` type. See `execute()`." }, "functionSelector": "e2b62f2d", "id": 5035, "implemented": true, "kind": "function", "modifiers": [], "name": "_getEncoded", "nameLocation": "6097:11:8", "nodeType": "FunctionDefinition", "parameters": { "id": 4996, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4991, "mutability": "mutable", "name": "req", "nameLocation": "6142:3:8", "nodeType": "VariableDeclaration", "scope": 5035, "src": "6118:27:8", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest" }, "typeName": { "id": 4990, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 4989, "name": "ForwardRequest", "nodeType": "IdentifierPath", "referencedDeclaration": 5058, "src": "6118:14:8" }, "referencedDeclaration": 5058, "src": "6118:14:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_storage_ptr", "typeString": 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4966, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5706:56:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_301a50b291d33ce1e8e9064e3f6a6c51d902ec22892b50d58abf6357c6a45541", "typeString": "literal_string hex\"1901\"" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "id": 4956, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "5627:3:8", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 4957, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "5627:16:8", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 4967, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5627:149:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 4955, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967288, "src": "5617:9:8", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 4968, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5617:160:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "5600:177:8" }, { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 4982, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 4974, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "id": 4971, "name": "tx", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967270, "src": "5848:2:8", "typeDescriptions": { "typeIdentifier": "t_magic_transaction", "typeString": "tx" } }, "id": 4972, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "origin", "nodeType": "MemberAccess", "src": "5848:9:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "id": 4973, "name": "DRY_RUN_ADDRESS", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4484, "src": "5861:15:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "5848:28:8", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 4981, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 4977, "name": "sig", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4936, "src": "5895:3:8", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } ], "expression": { "id": 4975, "name": "digest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4954, "src": "5880:6:8", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 4976, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "recover", "nodeType": "MemberAccess", "referencedDeclaration": 11871, "src": "5880:14:8", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_bytes_memory_ptr_$returns$_t_address_$bound_to$_t_bytes32_$", "typeString": "function (bytes32,bytes memory) pure returns (address)" } }, "id": 4978, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5880:19:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 4979, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4928, "src": "5903:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 4980, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "from", "nodeType": "MemberAccess", "referencedDeclaration": 5045, "src": "5903:8:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "5880:31:8", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "5848:63:8", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4657443a207369676e6174757265206d69736d61746368", "id": 4983, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5913:25:8", "typeDescriptions": { "typeIdentifier": "t_stringliteral_a309cac733f4697166c19648d49cb610f9d6044ca84e2283a12d8c0e1af506c4", "typeString": "literal_string \"FWD: signature mismatch\"" }, "value": "FWD: signature mismatch" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_a309cac733f4697166c19648d49cb610f9d6044ca84e2283a12d8c0e1af506c4", "typeString": "literal_string \"FWD: signature mismatch\"" } ], "id": 4970, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "5840:7:8", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 4984, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5840:99:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4985, "nodeType": "ExpressionStatement", "src": "5840:99:8" } ] }, "id": 4987, "implemented": true, "kind": "function", "modifiers": [], "name": "_verifySig", "nameLocation": "5222:10:8", "nodeType": "FunctionDefinition", "parameters": { "id": 4937, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4928, "mutability": "mutable", "name": "req", "nameLocation": "5266:3:8", "nodeType": "VariableDeclaration", "scope": 4987, "src": "5242:27:8", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest" }, "typeName": { "id": 4927, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 4926, "name": "ForwardRequest", "nodeType": "IdentifierPath", "referencedDeclaration": 5058, "src": "5242:14:8" }, "referencedDeclaration": 5058, "src": "5242:14:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_storage_ptr", "typeString": "struct IForwarder.ForwardRequest" } }, "visibility": "internal" }, { "constant": false, "id": 4930, "mutability": "mutable", "name": "domainSeparator", "nameLocation": "5287:15:8", "nodeType": "VariableDeclaration", "scope": 4987, "src": "5279:23:8", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 4929, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5279:7:8", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 4932, "mutability": "mutable", "name": "requestTypeHash", "nameLocation": "5320:15:8", "nodeType": "VariableDeclaration", "scope": 4987, "src": "5312:23:8", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 4931, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5312:7:8", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 4934, "mutability": "mutable", "name": "suffixData", "nameLocation": "5360:10:8", "nodeType": "VariableDeclaration", "scope": 4987, "src": "5345:25:8", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 4933, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "5345:5:8", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 4936, "mutability": "mutable", "name": "sig", "nameLocation": "5395:3:8", "nodeType": "VariableDeclaration", "scope": 4987, "src": "5380:18:8", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 4935, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "5380:5:8", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "5232:167:8" }, "returnParameters": { "id": 4938, "nodeType": "ParameterList", "parameters": [], "src": "5438:0:8" }, "scope": 5036, "src": "5213:733:8", "stateMutability": "view", "virtual": true, "visibility": "internal" }, { "body": { "id": 5034, "nodeType": "Block", "src": "6281:536:8", "statements": [ { "expression": { "arguments": [ { "id": 5002, "name": "requestTypeHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4993, "src": "6551:15:8", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "arguments": [ { "arguments": [ { "expression": { "id": 5007, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6596:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5008, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "from", "nodeType": "MemberAccess", "referencedDeclaration": 5045, "src": "6596:8:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5006, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6588:7:8", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint160_$", "typeString": "type(uint160)" }, "typeName": { "id": 5005, "name": "uint160", "nodeType": "ElementaryTypeName", "src": "6588:7:8", "typeDescriptions": {} } }, "id": 5009, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6588:17:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint160", "typeString": "uint160" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint160", "typeString": "uint160" } ], "id": 5004, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6580:7:8", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 5003, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6580:7:8", "typeDescriptions": {} } }, "id": 5010, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6580:26:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "arguments": [ { "arguments": [ { "expression": { "id": 5015, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6636:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5016, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "to", "nodeType": "MemberAccess", "referencedDeclaration": 5047, "src": "6636:6:8", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5014, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6628:7:8", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint160_$", "typeString": "type(uint160)" }, "typeName": { "id": 5013, "name": "uint160", "nodeType": "ElementaryTypeName", "src": "6628:7:8", "typeDescriptions": {} } }, "id": 5017, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6628:15:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint160", "typeString": "uint160" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint160", "typeString": "uint160" } ], "id": 5012, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6620:7:8", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 5011, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6620:7:8", "typeDescriptions": {} } }, "id": 5018, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6620:24:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "expression": { "id": 5019, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6658:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5020, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "value", "nodeType": "MemberAccess", "referencedDeclaration": 5049, "src": "6658:9:8", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "expression": { "id": 5021, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6681:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5022, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "gas", "nodeType": "MemberAccess", "referencedDeclaration": 5051, "src": "6681:7:8", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "expression": { "id": 5023, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6702:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5024, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "nonce", "nodeType": "MemberAccess", "referencedDeclaration": 5053, "src": "6702:9:8", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "arguments": [ { "expression": { "id": 5026, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6735:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5027, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "referencedDeclaration": 5055, "src": "6735:8:8", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } ], "id": 5025, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967288, "src": "6725:9:8", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 5028, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6725:19:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "expression": { "id": 5029, "name": "req", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4991, "src": "6758:3:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest calldata" } }, "id": 5030, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "validUntilTime", "nodeType": "MemberAccess", "referencedDeclaration": 5057, "src": "6758:18:8", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 5031, "name": "suffixData", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4995, "src": "6790:10:8", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } ], "expression": { "id": 5000, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "6521:3:8", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 5001, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "6521:16:8", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 5032, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6521:289:8", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "functionReturnParameters": 4999, "id": 5033, "nodeType": "Return", "src": "6514:296:8" } ] }, "documentation": { "id": 4988, "nodeType": "StructuredDocumentation", "src": "5952:131:8", "text": " @notice Creates a byte array that is a valid ABI encoding of a request of a `RequestType` type. See `execute()`." }, "functionSelector": "e2b62f2d", "id": 5035, "implemented": true, "kind": "function", "modifiers": [], "name": "_getEncoded", "nameLocation": "6097:11:8", "nodeType": "FunctionDefinition", "parameters": { "id": 4996, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4991, "mutability": "mutable", "name": "req", "nameLocation": "6142:3:8", "nodeType": "VariableDeclaration", "scope": 5035, "src": "6118:27:8", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_calldata_ptr", "typeString": "struct IForwarder.ForwardRequest" }, "typeName": { "id": 4990, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 4989, "name": "ForwardRequest", "nodeType": "IdentifierPath", "referencedDeclaration": 5058, "src": "6118:14:8" }, "referencedDeclaration": 5058, "src": "6118:14:8", "typeDescriptions": { "typeIdentifier": "t_struct$_ForwardRequest_$5058_storage_ptr", "typeString": "struct IForwarder.ForwardRequest" } }, "visibility": "internal" }, { "constant": false, "id": 4993, "mutability": "mutable", "name": "requestTypeHash", "nameLocation": "6163:15:8", "nodeType": "VariableDeclaration", "scope": 5035, "src": "6155:23:8", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 4992, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6155:7:8", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 4995, "mutability": "mutable", "name": "suffixData", "nameLocation": "6203:10:8", "nodeType": "VariableDeclaration", "scope": 5035, "src": "6188:25:8", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 4994, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6188:5:8", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "6108:111:8" }, "returnParameters": { "id": 4999, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4998, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 5035, "src": "6262:12:8", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 4997, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6262:5:8", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "6252:28:8" }, "scope": 5036, "src": "6088:729:8", "stateMutability": "pure", "virtual": false, "visibility": "public" } ], "scope": 5037, "src": "479:6340:8", "usedErrors": [] } ], "src": "0:6819:8" }, "compiler": { "name": "solc", "version": "0.8.7+commit.e28d00a7.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.1.0", "updatedAt": "2023-03-16T16:54:15.188Z", "devdoc": { "kind": "dev", "methods": { "execute((address,address,uint256,uint256,uint256,bytes,uint256),bytes32,bytes32,bytes,bytes)": { "params": { "domainSeparator": "The domain used when signing this request.", "forwardRequest": "All requested transaction parameters.", "requestTypeHash": "The request type used when signing this request.", "signature": "The client signature to be validated.", "suffixData": "The ABI-encoded extension data for the current `RequestType` used when signing this request." }, "returns": { "ret": "The byte array returned by the underlying `CALL` to the target address.", "success": "The success flag of the underlying `CALL` to the target address." } }, "getNonce(address)": { "params": { "from": "The address of a sender." }, "returns": { "_0": "The nonce for this address." } }, "registerDomainSeparator(string,string)": { "params": { "name": "The domain's display name.", "version": "The domain/protocol version." } }, "registerRequestType(string,string)": { "params": { "typeName": "The name of the request type.", "typeSuffix": "Any extra data after the generic params. Must contain add at least one param. The generic ForwardRequest type is always registered by the constructor." } }, "supportsInterface(bytes4)": { "details": "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." } }, "title": "The Forwarder Implementation", "version": 1 }, "userdoc": { "kind": "user", "methods": { "_getEncoded((address,address,uint256,uint256,uint256,bytes,uint256),bytes32,bytes)": { "notice": "Creates a byte array that is a valid ABI encoding of a request of a `RequestType` type. See `execute()`." }, "execute((address,address,uint256,uint256,uint256,bytes,uint256),bytes32,bytes32,bytes,bytes)": { "notice": "Executes a transaction specified by the `ForwardRequest`. The transaction is first verified and then executed. The success flag and returned bytes array of the `CALL` are returned as-is. This method would revert only in case of a verification error. All the target errors are reported using the returned success flag and returned bytes array." }, "registerDomainSeparator(string,string)": { "notice": "Register a new domain separator.This is necessary for the Forwarder to be able to verify the signatures conforming to the ERC-712.The domain separator must have the following fields: `name`, `version`, `chainId`, `verifyingContract`. The `chainId` is the current network's `chainId`, and the `verifyingContract` is this Forwarder's address. This method accepts the domain name and version to create and register the domain separator value." }, "registerRequestType(string,string)": { "notice": "Register a new Request typehash.This is necessary for the Forwarder to be able to verify the signatures conforming to the ERC-712." }, "verify((address,address,uint256,uint256,uint256,bytes,uint256),bytes32,bytes32,bytes,bytes)": { "notice": "Verify the transaction is valid and can be executed. Implementations must validate the signature and the nonce of the request are correct. Does not revert and returns successfully if the input is valid. Reverts if any validation has failed. For instance, if either signature or nonce are incorrect. Reverts if `domainSeparator` or `requestTypeHash` are not registered as well." } }, "notice": "This implementation of the `IForwarder` interface uses ERC-712 signatures and stored nonces for verification.", "version": 1 } }