{ "contractName": "ERC2771Recipient", "abi": [ { "inputs": [], "name": "getTrustedForwarder", "outputs": [ { "internalType": "address", "name": "forwarder", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "forwarder", "type": "address" } ], "name": "isTrustedForwarder", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.8.7+commit.e28d00a7\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[],\"name\":\"getTrustedForwarder\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"forwarder\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"forwarder\",\"type\":\"address\"}],\"name\":\"isTrustedForwarder\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"kind\":\"dev\",\"methods\":{\"getTrustedForwarder()\":{\"returns\":{\"forwarder\":\"The address of the Forwarder contract that is being used.\"}},\"isTrustedForwarder(address)\":{\"params\":{\"forwarder\":\"The address of the Forwarder contract that is being used.\"},\"returns\":{\"_0\":\"isTrustedForwarder `true` if the Forwarder is trusted to forward relayed transactions by this Recipient.\"}}},\"title\":\"The ERC-2771 Recipient Base Abstract Class - Implementation\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{\"getTrustedForwarder()\":{\"notice\":\":warning: **Warning** :warning: The Forwarder can have a full control over your Recipient. Only trust verified Forwarder.Method is not a required method to allow Recipients to trust multiple Forwarders. Not recommended yet.\"},\"isTrustedForwarder(address)\":{\"notice\":\":warning: **Warning** :warning: The Forwarder can have a full control over your Recipient. Only trust verified Forwarder.\"}},\"notice\":\"Note that this contract was called `BaseRelayRecipient` in the previous revision of the GSN.A base contract to be inherited by any contract that want to receive relayed transactions.A subclass must use `_msgSender()` instead of `msg.sender`.\",\"version\":1}},\"settings\":{\"compilationTarget\":{\"@opengsn/contracts/src/ERC2771Recipient.sol\":\"ERC2771Recipient\"},\"evmVersion\":\"london\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@opengsn/contracts/src/ERC2771Recipient.sol\":{\"keccak256\":\"0x77b3307c570c582969ea5466f296898ab9fea1f8b61b30f1c73345fe047a89a9\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://b2a2f0642c775f89615b1717ee3db50cf3732f59bc66032b06fee6c9018e308b\",\"dweb:/ipfs/QmRtsTQeTYk6muGrU7Qurjw6FeUVUBBXXhcUQNWvCoJysT\"]},\"@opengsn/contracts/src/interfaces/IERC2771Recipient.sol\":{\"keccak256\":\"0xc762358681e3494519a5fff2f7e3f0f74f9c9f395f23b00cdfb45e0fb9ef8170\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://68680e24b98e554eb64e724a6ddab30827d5091ae36812e2a4e1b1914481ca4c\",\"dweb:/ipfs/QmR9TVoucNzaeiAgSu1miqoQ4SZAcMCB2yRd32YuEXVWLB\"]}},\"version\":1}", "bytecode": "0x", "deployedBytecode": "0x", "immutableReferences": {}, "sourceMap": "", "deployedSourceMap": "", "source": "// SPDX-License-Identifier: MIT\n// solhint-disable no-inline-assembly\npragma solidity >=0.6.9;\n\nimport \"./interfaces/IERC2771Recipient.sol\";\n\n/**\n * @title The ERC-2771 Recipient Base Abstract Class - Implementation\n *\n * @notice Note that this contract was called `BaseRelayRecipient` in the previous revision of the GSN.\n *\n * @notice A base contract to be inherited by any contract that want to receive relayed transactions.\n *\n * @notice A subclass must use `_msgSender()` instead of `msg.sender`.\n */\nabstract contract ERC2771Recipient is IERC2771Recipient {\n\n /*\n * Forwarder singleton we accept calls from\n */\n address private _trustedForwarder;\n\n /**\n * :warning: **Warning** :warning: The Forwarder can have a full control over your Recipient. Only trust verified Forwarder.\n * @notice Method is not a required method to allow Recipients to trust multiple Forwarders. Not recommended yet.\n * @return forwarder The address of the Forwarder contract that is being used.\n */\n function getTrustedForwarder() public virtual view returns (address forwarder){\n return _trustedForwarder;\n }\n\n function _setTrustedForwarder(address _forwarder) internal {\n _trustedForwarder = _forwarder;\n }\n\n /// @inheritdoc IERC2771Recipient\n function isTrustedForwarder(address forwarder) public virtual override view returns(bool) {\n return forwarder == _trustedForwarder;\n }\n\n /// @inheritdoc IERC2771Recipient\n function _msgSender() internal override virtual view returns (address ret) {\n if (msg.data.length >= 20 && isTrustedForwarder(msg.sender)) {\n // At this point we know that the sender is a trusted forwarder,\n // so we trust that the last bytes of msg.data are the verified sender address.\n // extract sender address from the end of msg.data\n assembly {\n ret := shr(96,calldataload(sub(calldatasize(),20)))\n }\n } else {\n ret = msg.sender;\n }\n }\n\n /// @inheritdoc IERC2771Recipient\n function _msgData() internal override virtual view returns (bytes calldata ret) {\n if (msg.data.length >= 20 && isTrustedForwarder(msg.sender)) {\n return msg.data[0:msg.data.length-20];\n } else {\n return msg.data;\n }\n }\n}\n", "sourcePath": "@opengsn/contracts/src/ERC2771Recipient.sol", "ast": { "absolutePath": "@opengsn/contracts/src/ERC2771Recipient.sol", "exportedSymbols": { "ERC2771Recipient": [ 10045 ], "IERC2771Recipient": [ 10069 ] }, "id": 10046, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 9944, "literals": [ "solidity", ">=", "0.6", ".9" ], "nodeType": "PragmaDirective", "src": "70:24:45" }, { "absolutePath": "@opengsn/contracts/src/interfaces/IERC2771Recipient.sol", "file": "./interfaces/IERC2771Recipient.sol", "id": 9945, "nameLocation": "-1:-1:-1", "nodeType": "ImportDirective", "scope": 10046, "sourceUnit": 10070, "src": "96:44:45", "symbolAliases": [], "unitAlias": "" }, { "abstract": true, "baseContracts": [ { "baseName": { "id": 9947, "name": "IERC2771Recipient", "nodeType": "IdentifierPath", "referencedDeclaration": 10069, "src": "544:17:45" }, "id": 9948, "nodeType": "InheritanceSpecifier", "src": "544:17:45" } ], "contractDependencies": [], "contractKind": "contract", "documentation": { "id": 9946, "nodeType": "StructuredDocumentation", "src": "142:363:45", "text": " @title The ERC-2771 Recipient Base Abstract Class - Implementation\n @notice Note that this contract was called `BaseRelayRecipient` in the previous revision of the GSN.\n @notice A base contract to be inherited by any contract that want to receive relayed transactions.\n @notice A subclass must use `_msgSender()` instead of `msg.sender`." }, "fullyImplemented": true, "id": 10045, "linearizedBaseContracts": [ 10045, 10069 ], "name": "ERC2771Recipient", "nameLocation": "524:16:45", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 9950, "mutability": "mutable", "name": "_trustedForwarder", "nameLocation": "648:17:45", "nodeType": "VariableDeclaration", "scope": 10045, "src": "632:33:45", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 9949, "name": "address", "nodeType": "ElementaryTypeName", "src": "632:7:45", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "private" }, { "body": { "id": 9958, "nodeType": "Block", "src": "1096:41:45", "statements": [ { "expression": { "id": 9956, "name": "_trustedForwarder", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 9950, "src": "1113:17:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 9955, "id": 9957, "nodeType": "Return", "src": "1106:24:45" } ] }, "documentation": { "id": 9951, "nodeType": "StructuredDocumentation", "src": "672:341:45", "text": " :warning: **Warning** :warning: The Forwarder can have a full control over your Recipient. Only trust verified Forwarder.\n @notice Method is not a required method to allow Recipients to trust multiple Forwarders. Not recommended yet.\n @return forwarder The address of the Forwarder contract that is being used." }, "functionSelector": "ce1b815f", "id": 9959, "implemented": true, "kind": "function", "modifiers": [], "name": "getTrustedForwarder", "nameLocation": "1027:19:45", "nodeType": "FunctionDefinition", "parameters": { "id": 9952, "nodeType": "ParameterList", "parameters": [], "src": "1046:2:45" }, "returnParameters": { "id": 9955, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 9954, "mutability": "mutable", "name": "forwarder", "nameLocation": "1086:9:45", "nodeType": "VariableDeclaration", "scope": 9959, "src": "1078:17:45", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 9953, "name": "address", "nodeType": "ElementaryTypeName", "src": "1078:7:45", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "1077:19:45" }, "scope": 10045, "src": "1018:119:45", "stateMutability": "view", "virtual": true, "visibility": "public" }, { "body": { "id": 9968, "nodeType": "Block", "src": "1202:47:45", "statements": [ { "expression": { "id": 9966, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 9964, "name": "_trustedForwarder", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 9950, "src": "1212:17:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 9965, "name": "_forwarder", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 9961, "src": "1232:10:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "1212:30:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 9967, "nodeType": "ExpressionStatement", "src": "1212:30:45" } ] }, "id": 9969, "implemented": true, "kind": "function", "modifiers": [], "name": "_setTrustedForwarder", "nameLocation": "1152:20:45", "nodeType": "FunctionDefinition", "parameters": { "id": 9962, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 9961, "mutability": "mutable", "name": "_forwarder", "nameLocation": "1181:10:45", "nodeType": "VariableDeclaration", "scope": 9969, "src": "1173:18:45", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 9960, "name": "address", "nodeType": "ElementaryTypeName", "src": "1173:7:45", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "1172:20:45" }, "returnParameters": { "id": 9963, "nodeType": "ParameterList", "parameters": [], "src": "1202:0:45" }, "scope": 10045, "src": "1143:106:45", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "baseFunctions": [ 10056 ], "body": { "id": 9982, "nodeType": "Block", "src": "1383:54:45", "statements": [ { "expression": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 9980, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 9978, "name": "forwarder", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 9972, "src": "1400:9:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "id": 9979, "name": "_trustedForwarder", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 9950, "src": "1413:17:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "1400:30:45", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 9977, "id": 9981, "nodeType": "Return", "src": "1393:37:45" } ] }, "documentation": { "id": 9970, "nodeType": "StructuredDocumentation", "src": "1255:33:45", "text": "@inheritdoc IERC2771Recipient" }, "functionSelector": "572b6c05", "id": 9983, "implemented": true, "kind": "function", "modifiers": [], "name": "isTrustedForwarder", "nameLocation": "1302:18:45", "nodeType": "FunctionDefinition", "overrides": { "id": 9974, "nodeType": "OverrideSpecifier", "overrides": [], "src": "1355:8:45" }, "parameters": { "id": 9973, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 9972, "mutability": "mutable", "name": "forwarder", "nameLocation": "1329:9:45", "nodeType": "VariableDeclaration", "scope": 9983, "src": "1321:17:45", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 9971, "name": "address", "nodeType": "ElementaryTypeName", "src": "1321:7:45", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "1320:19:45" }, "returnParameters": { "id": 9977, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 9976, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 9983, "src": "1377:4:45", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 9975, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1377:4:45", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "1376:6:45" }, "scope": 10045, "src": "1293:144:45", "stateMutability": "view", "virtual": true, "visibility": "public" }, { "baseFunctions": [ 10062 ], "body": { "id": 10009, "nodeType": "Block", "src": "1556:472:45", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 9999, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 9994, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "expression": { "id": 9990, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "1570:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 9991, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "src": "1570:8:45", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, "id": 9992, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "1570:15:45", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "hexValue": "3230", "id": 9993, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1589:2:45", "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" }, "src": "1570:21:45", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "arguments": [ { "expression": { "id": 9996, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "1614:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 9997, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "src": "1614:10:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 9995, "name": "isTrustedForwarder", "nodeType": "Identifier", "overloadedDeclarations": [ 9983 ], "referencedDeclaration": 9983, "src": "1595:18:45", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$", "typeString": "function (address) view returns (bool)" } }, "id": 9998, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1595:30:45", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "1570:55:45", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 10007, "nodeType": "Block", "src": "1981:41:45", "statements": [ { "expression": { "id": 10005, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 10002, "name": "ret", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 9988, "src": "1995:3:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "expression": { "id": 10003, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "2001:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 10004, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "src": "2001:10:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "1995:16:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 10006, "nodeType": "ExpressionStatement", "src": "1995:16:45" } ] }, "id": 10008, "nodeType": "IfStatement", "src": "1566:456:45", "trueBody": { "id": 10001, "nodeType": "Block", "src": "1627:348:45", "statements": [ { "AST": { "nodeType": "YulBlock", "src": "1882:83:45", "statements": [ { "nodeType": "YulAssignment", "src": "1900:51:45", "value": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "1911:2:45", "type": "", "value": "96" }, { "arguments": [ { "arguments": [ { "arguments": [], "functionName": { "name": "calldatasize", "nodeType": "YulIdentifier", "src": "1931:12:45" }, "nodeType": "YulFunctionCall", "src": "1931:14:45" }, { "kind": "number", "nodeType": "YulLiteral", "src": "1946:2:45", "type": "", "value": "20" } ], "functionName": { "name": "sub", "nodeType": "YulIdentifier", "src": "1927:3:45" }, "nodeType": "YulFunctionCall", "src": "1927:22:45" } ], "functionName": { "name": "calldataload", "nodeType": "YulIdentifier", "src": "1914:12:45" }, "nodeType": "YulFunctionCall", "src": "1914:36:45" } ], "functionName": { "name": "shr", "nodeType": "YulIdentifier", "src": "1907:3:45" }, "nodeType": "YulFunctionCall", "src": "1907:44:45" }, "variableNames": [ { "name": "ret", "nodeType": "YulIdentifier", "src": "1900:3:45" } ] } ] }, "evmVersion": "london", "externalReferences": [ { "declaration": 9988, "isOffset": false, "isSlot": false, "src": "1900:3:45", "valueSize": 1 } ], "id": 10000, "nodeType": "InlineAssembly", "src": "1873:92:45" } ] } } ] }, "documentation": { "id": 9984, "nodeType": "StructuredDocumentation", "src": "1443:33:45", "text": "@inheritdoc IERC2771Recipient" }, "id": 10010, "implemented": true, "kind": "function", "modifiers": [], "name": "_msgSender", "nameLocation": "1490:10:45", "nodeType": "FunctionDefinition", "overrides": { "id": 9986, "nodeType": "OverrideSpecifier", "overrides": [], "src": "1512:8:45" }, "parameters": { "id": 9985, "nodeType": "ParameterList", "parameters": [], "src": "1500:2:45" }, "returnParameters": { "id": 9989, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 9988, "mutability": "mutable", "name": "ret", "nameLocation": "1551:3:45", "nodeType": "VariableDeclaration", "scope": 10010, "src": "1543:11:45", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 9987, "name": "address", "nodeType": "ElementaryTypeName", "src": "1543:7:45", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "1542:13:45" }, "scope": 10045, "src": "1481:547:45", "stateMutability": "view", "virtual": true, "visibility": "internal" }, { "baseFunctions": [ 10068 ], "body": { "id": 10043, "nodeType": "Block", "src": "2152:185:45", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 10026, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 10021, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "expression": { "id": 10017, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "2166:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 10018, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "src": "2166:8:45", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, "id": 10019, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "2166:15:45", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "hexValue": "3230", "id": 10020, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2185:2:45", "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" }, "src": "2166:21:45", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "arguments": [ { "expression": { "id": 10023, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "2210:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 10024, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "src": "2210:10:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 10022, "name": "isTrustedForwarder", "nodeType": "Identifier", "overloadedDeclarations": [ 9983 ], "referencedDeclaration": 9983, "src": "2191:18:45", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$", "typeString": "function (address) view returns (bool)" } }, "id": 10025, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2191:30:45", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "2166:55:45", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 10041, "nodeType": "Block", "src": "2291:40:45", "statements": [ { "expression": { "expression": { "id": 10038, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "2312:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 10039, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "src": "2312:8:45", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, "functionReturnParameters": 10016, "id": 10040, "nodeType": "Return", "src": "2305:15:45" } ] }, "id": 10042, "nodeType": "IfStatement", "src": "2162:169:45", "trueBody": { "id": 10037, "nodeType": "Block", "src": "2223:62:45", "statements": [ { "expression": { "baseExpression": { "expression": { "id": 10027, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "2244:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 10028, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "src": "2244:8:45", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, "endExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 10034, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "expression": { "id": 10030, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "2255:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 10031, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "src": "2255:8:45", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, "id": 10032, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "2255:15:45", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "hexValue": "3230", "id": 10033, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2271:2:45", "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" }, "src": "2255:18:45", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 10035, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "IndexRangeAccess", "src": "2244:30:45", "startExpression": { "hexValue": "30", "id": 10029, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2253:1:45", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr_slice", "typeString": "bytes calldata slice" } }, "functionReturnParameters": 10016, "id": 10036, "nodeType": "Return", "src": "2237:37:45" } ] } } ] }, "documentation": { "id": 10011, "nodeType": "StructuredDocumentation", "src": "2034:33:45", "text": "@inheritdoc IERC2771Recipient" }, "id": 10044, "implemented": true, "kind": "function", "modifiers": [], "name": "_msgData", "nameLocation": "2081:8:45", "nodeType": "FunctionDefinition", "overrides": { "id": 10013, "nodeType": "OverrideSpecifier", "overrides": [], "src": "2101:8:45" }, "parameters": { "id": 10012, "nodeType": "ParameterList", "parameters": [], "src": "2089:2:45" }, "returnParameters": { "id": 10016, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 10015, "mutability": "mutable", "name": "ret", "nameLocation": "2147:3:45", "nodeType": "VariableDeclaration", "scope": 10044, "src": "2132:18:45", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 10014, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2132:5:45", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "2131:20:45" }, "scope": 10045, "src": "2072:265:45", "stateMutability": "view", "virtual": true, "visibility": "internal" } ], "scope": 10046, "src": "506:1833:45", "usedErrors": [] } ], "src": "70:2270:45" }, "legacyAST": { "absolutePath": "@opengsn/contracts/src/ERC2771Recipient.sol", "exportedSymbols": { "ERC2771Recipient": [ 10045 ], "IERC2771Recipient": [ 10069 ] }, "id": 10046, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 9944, "literals": [ "solidity", ">=", "0.6", ".9" ], "nodeType": "PragmaDirective", "src": "70:24:45" }, { "absolutePath": "@opengsn/contracts/src/interfaces/IERC2771Recipient.sol", "file": "./interfaces/IERC2771Recipient.sol", "id": 9945, "nameLocation": "-1:-1:-1", "nodeType": "ImportDirective", "scope": 10046, "sourceUnit": 10070, "src": "96:44:45", "symbolAliases": [], "unitAlias": "" }, { "abstract": true, "baseContracts": [ { "baseName": { "id": 9947, "name": "IERC2771Recipient", "nodeType": "IdentifierPath", "referencedDeclaration": 10069, "src": "544:17:45" }, "id": 9948, "nodeType": "InheritanceSpecifier", "src": "544:17:45" } ], "contractDependencies": [], "contractKind": "contract", "documentation": { "id": 9946, "nodeType": "StructuredDocumentation", "src": "142:363:45", "text": " @title The ERC-2771 Recipient Base Abstract Class - Implementation\n @notice Note that this contract was called `BaseRelayRecipient` in the previous revision of the GSN.\n @notice A base contract to be inherited by any contract that want to receive relayed transactions.\n @notice A subclass must use `_msgSender()` instead of `msg.sender`." }, "fullyImplemented": true, "id": 10045, "linearizedBaseContracts": [ 10045, 10069 ], "name": "ERC2771Recipient", "nameLocation": "524:16:45", "nodeType": "ContractDefinition", "nodes": [ { "constant": false, "id": 9950, "mutability": "mutable", "name": "_trustedForwarder", "nameLocation": "648:17:45", "nodeType": "VariableDeclaration", "scope": 10045, "src": "632:33:45", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 9949, "name": "address", "nodeType": "ElementaryTypeName", "src": "632:7:45", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "private" }, { "body": { "id": 9958, "nodeType": "Block", "src": "1096:41:45", "statements": [ { "expression": { "id": 9956, "name": "_trustedForwarder", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 9950, "src": "1113:17:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 9955, "id": 9957, "nodeType": "Return", "src": "1106:24:45" } ] }, "documentation": { "id": 9951, "nodeType": "StructuredDocumentation", "src": "672:341:45", "text": " :warning: **Warning** :warning: The Forwarder can have a full control over your Recipient. Only trust verified Forwarder.\n @notice Method is not a required method to allow Recipients to trust multiple Forwarders. Not recommended yet.\n @return forwarder The address of the Forwarder contract that is being used." }, "functionSelector": "ce1b815f", "id": 9959, "implemented": true, "kind": "function", "modifiers": [], "name": "getTrustedForwarder", "nameLocation": "1027:19:45", "nodeType": "FunctionDefinition", "parameters": { "id": 9952, "nodeType": "ParameterList", "parameters": [], "src": "1046:2:45" }, "returnParameters": { "id": 9955, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 9954, "mutability": "mutable", "name": "forwarder", "nameLocation": "1086:9:45", "nodeType": "VariableDeclaration", "scope": 9959, "src": "1078:17:45", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 9953, "name": "address", "nodeType": "ElementaryTypeName", "src": "1078:7:45", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "1077:19:45" }, "scope": 10045, "src": "1018:119:45", "stateMutability": "view", "virtual": true, "visibility": "public" }, { "body": { "id": 9968, "nodeType": "Block", "src": "1202:47:45", "statements": [ { "expression": { "id": 9966, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 9964, "name": "_trustedForwarder", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 9950, "src": "1212:17:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 9965, "name": "_forwarder", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 9961, "src": "1232:10:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "1212:30:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 9967, "nodeType": "ExpressionStatement", "src": "1212:30:45" } ] }, "id": 9969, "implemented": true, "kind": "function", "modifiers": [], "name": "_setTrustedForwarder", "nameLocation": "1152:20:45", "nodeType": "FunctionDefinition", "parameters": { "id": 9962, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 9961, "mutability": "mutable", "name": "_forwarder", "nameLocation": "1181:10:45", "nodeType": "VariableDeclaration", "scope": 9969, "src": "1173:18:45", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 9960, "name": "address", "nodeType": "ElementaryTypeName", "src": "1173:7:45", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "1172:20:45" }, "returnParameters": { "id": 9963, "nodeType": "ParameterList", "parameters": [], "src": "1202:0:45" }, "scope": 10045, "src": "1143:106:45", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "baseFunctions": [ 10056 ], "body": { "id": 9982, "nodeType": "Block", "src": "1383:54:45", "statements": [ { "expression": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 9980, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 9978, "name": "forwarder", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 9972, "src": "1400:9:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "id": 9979, "name": "_trustedForwarder", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 9950, "src": "1413:17:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "1400:30:45", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 9977, "id": 9981, "nodeType": "Return", "src": "1393:37:45" } ] }, "documentation": { "id": 9970, "nodeType": "StructuredDocumentation", "src": "1255:33:45", "text": "@inheritdoc IERC2771Recipient" }, "functionSelector": "572b6c05", "id": 9983, "implemented": true, "kind": "function", "modifiers": [], "name": "isTrustedForwarder", "nameLocation": "1302:18:45", "nodeType": "FunctionDefinition", "overrides": { "id": 9974, "nodeType": "OverrideSpecifier", "overrides": [], "src": "1355:8:45" }, "parameters": { "id": 9973, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 9972, "mutability": "mutable", "name": "forwarder", "nameLocation": "1329:9:45", "nodeType": "VariableDeclaration", "scope": 9983, "src": "1321:17:45", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 9971, "name": "address", "nodeType": "ElementaryTypeName", "src": "1321:7:45", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "1320:19:45" }, "returnParameters": { "id": 9977, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 9976, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 9983, "src": "1377:4:45", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 9975, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1377:4:45", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "1376:6:45" }, "scope": 10045, "src": "1293:144:45", "stateMutability": "view", "virtual": true, "visibility": "public" }, { "baseFunctions": [ 10062 ], "body": { "id": 10009, "nodeType": "Block", "src": "1556:472:45", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 9999, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 9994, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "expression": { "id": 9990, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "1570:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 9991, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "src": "1570:8:45", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, "id": 9992, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "1570:15:45", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "hexValue": "3230", "id": 9993, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1589:2:45", "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" }, "src": "1570:21:45", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "arguments": [ { "expression": { "id": 9996, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "1614:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 9997, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "src": "1614:10:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 9995, "name": "isTrustedForwarder", "nodeType": "Identifier", "overloadedDeclarations": [ 9983 ], "referencedDeclaration": 9983, "src": "1595:18:45", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$", "typeString": "function (address) view returns (bool)" } }, "id": 9998, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1595:30:45", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "1570:55:45", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 10007, "nodeType": "Block", "src": "1981:41:45", "statements": [ { "expression": { "id": 10005, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 10002, "name": "ret", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 9988, "src": "1995:3:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "expression": { "id": 10003, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "2001:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 10004, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "src": "2001:10:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "1995:16:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 10006, "nodeType": "ExpressionStatement", "src": "1995:16:45" } ] }, "id": 10008, "nodeType": "IfStatement", "src": "1566:456:45", "trueBody": { "id": 10001, "nodeType": "Block", "src": "1627:348:45", "statements": [ { "AST": { "nodeType": "YulBlock", "src": "1882:83:45", "statements": [ { "nodeType": "YulAssignment", "src": "1900:51:45", "value": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "1911:2:45", "type": "", "value": "96" }, { "arguments": [ { "arguments": [ { "arguments": [], "functionName": { "name": "calldatasize", "nodeType": "YulIdentifier", "src": "1931:12:45" }, "nodeType": "YulFunctionCall", "src": "1931:14:45" }, { "kind": "number", "nodeType": "YulLiteral", "src": "1946:2:45", "type": "", "value": "20" } ], "functionName": { "name": "sub", "nodeType": "YulIdentifier", "src": "1927:3:45" }, "nodeType": "YulFunctionCall", "src": "1927:22:45" } ], "functionName": { "name": "calldataload", "nodeType": "YulIdentifier", "src": "1914:12:45" }, "nodeType": "YulFunctionCall", "src": "1914:36:45" } ], "functionName": { "name": "shr", "nodeType": "YulIdentifier", "src": "1907:3:45" }, "nodeType": "YulFunctionCall", "src": "1907:44:45" }, "variableNames": [ { "name": "ret", "nodeType": "YulIdentifier", "src": "1900:3:45" } ] } ] }, "evmVersion": "london", "externalReferences": [ { "declaration": 9988, "isOffset": false, "isSlot": false, "src": "1900:3:45", "valueSize": 1 } ], "id": 10000, "nodeType": "InlineAssembly", "src": "1873:92:45" } ] } } ] }, "documentation": { "id": 9984, "nodeType": "StructuredDocumentation", "src": "1443:33:45", "text": "@inheritdoc IERC2771Recipient" }, "id": 10010, "implemented": true, "kind": "function", "modifiers": [], "name": "_msgSender", "nameLocation": "1490:10:45", "nodeType": "FunctionDefinition", "overrides": { "id": 9986, "nodeType": "OverrideSpecifier", "overrides": [], "src": "1512:8:45" }, "parameters": { "id": 9985, "nodeType": "ParameterList", "parameters": [], "src": "1500:2:45" }, "returnParameters": { "id": 9989, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 9988, "mutability": "mutable", "name": "ret", "nameLocation": "1551:3:45", "nodeType": "VariableDeclaration", "scope": 10010, "src": "1543:11:45", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 9987, "name": "address", "nodeType": "ElementaryTypeName", "src": "1543:7:45", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "1542:13:45" }, "scope": 10045, "src": "1481:547:45", "stateMutability": "view", "virtual": true, "visibility": "internal" }, { "baseFunctions": [ 10068 ], "body": { "id": 10043, "nodeType": "Block", "src": "2152:185:45", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 10026, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 10021, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "expression": { "id": 10017, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "2166:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 10018, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "src": "2166:8:45", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, "id": 10019, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "2166:15:45", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "hexValue": "3230", "id": 10020, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2185:2:45", "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" }, "src": "2166:21:45", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "arguments": [ { "expression": { "id": 10023, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "2210:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 10024, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "src": "2210:10:45", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 10022, "name": "isTrustedForwarder", "nodeType": "Identifier", "overloadedDeclarations": [ 9983 ], "referencedDeclaration": 9983, "src": "2191:18:45", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$", "typeString": "function (address) view returns (bool)" } }, "id": 10025, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2191:30:45", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "2166:55:45", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 10041, "nodeType": "Block", "src": "2291:40:45", "statements": [ { "expression": { "expression": { "id": 10038, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "2312:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 10039, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "src": "2312:8:45", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, "functionReturnParameters": 10016, "id": 10040, "nodeType": "Return", "src": "2305:15:45" } ] }, "id": 10042, "nodeType": "IfStatement", "src": "2162:169:45", "trueBody": { "id": 10037, "nodeType": "Block", "src": "2223:62:45", "statements": [ { "expression": { "baseExpression": { "expression": { "id": 10027, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "2244:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 10028, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "src": "2244:8:45", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, "endExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 10034, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "expression": { "id": 10030, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "2255:3:45", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 10031, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "data", "nodeType": "MemberAccess", "src": "2255:8:45", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes calldata" } }, "id": 10032, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "2255:15:45", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "hexValue": "3230", "id": 10033, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2271:2:45", "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" }, "src": "2255:18:45", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 10035, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "IndexRangeAccess", "src": "2244:30:45", "startExpression": { "hexValue": "30", "id": 10029, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2253:1:45", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr_slice", "typeString": "bytes calldata slice" } }, "functionReturnParameters": 10016, "id": 10036, "nodeType": "Return", "src": "2237:37:45" } ] } } ] }, "documentation": { "id": 10011, "nodeType": "StructuredDocumentation", "src": "2034:33:45", "text": "@inheritdoc IERC2771Recipient" }, "id": 10044, "implemented": true, "kind": "function", "modifiers": [], "name": "_msgData", "nameLocation": "2081:8:45", "nodeType": "FunctionDefinition", "overrides": { "id": 10013, "nodeType": "OverrideSpecifier", "overrides": [], "src": "2101:8:45" }, "parameters": { "id": 10012, "nodeType": "ParameterList", "parameters": [], "src": "2089:2:45" }, "returnParameters": { "id": 10016, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 10015, "mutability": "mutable", "name": "ret", "nameLocation": "2147:3:45", "nodeType": "VariableDeclaration", "scope": 10044, "src": "2132:18:45", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 10014, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2132:5:45", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "2131:20:45" }, "scope": 10045, "src": "2072:265:45", "stateMutability": "view", "virtual": true, "visibility": "internal" } ], "scope": 10046, "src": "506:1833:45", "usedErrors": [] } ], "src": "70:2270:45" }, "compiler": { "name": "solc", "version": "0.8.7+commit.e28d00a7.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.1.0", "updatedAt": "2023-03-16T16:54:15.128Z", "devdoc": { "kind": "dev", "methods": { "getTrustedForwarder()": { "returns": { "forwarder": "The address of the Forwarder contract that is being used." } }, "isTrustedForwarder(address)": { "params": { "forwarder": "The address of the Forwarder contract that is being used." }, "returns": { "_0": "isTrustedForwarder `true` if the Forwarder is trusted to forward relayed transactions by this Recipient." } } }, "title": "The ERC-2771 Recipient Base Abstract Class - Implementation", "version": 1 }, "userdoc": { "kind": "user", "methods": { "getTrustedForwarder()": { "notice": ":warning: **Warning** :warning: The Forwarder can have a full control over your Recipient. Only trust verified Forwarder.Method is not a required method to allow Recipients to trust multiple Forwarders. Not recommended yet." }, "isTrustedForwarder(address)": { "notice": ":warning: **Warning** :warning: The Forwarder can have a full control over your Recipient. Only trust verified Forwarder." } }, "notice": "Note that this contract was called `BaseRelayRecipient` in the previous revision of the GSN.A base contract to be inherited by any contract that want to receive relayed transactions.A subclass must use `_msgSender()` instead of `msg.sender`.", "version": 1 } }