@gnosis.pm/pm-contracts

{ "contractName": "SignedMessageOracleData", "abi": [ { "constant": true, "inputs": [], "name": "signer", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "outcome", "outputs": [ { "name": "", "type": "int256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "descriptionHash", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "isSet", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "newSigner", "type": "address" } ], "name": "SignerReplacement", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "outcome", "type": "int256" } ], "name": "OutcomeAssignment", "type": "event" } ], "metadata": 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"114:485:23:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;114:485:23;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;314:21;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;416:18;;;:::i;:::-;;;;;;;;;;;;;;;;;;;341:30;;;:::i;:::-;;;;;;;;;;;;;;;;;;;393:17;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;314:21;;;;;;;;;;;;;:::o;416:18::-;;;;:::o;341:30::-;;;;:::o;393:17::-;;;;;;;;;;;;;:::o", "source": "pragma solidity ^0.5.0;\nimport \"../Oracles/Oracle.sol\";\nimport \"@gnosis.pm/util-contracts/contracts/Proxy.sol\";\n\n\ncontract SignedMessageOracleData {\n\n /*\n * Events\n */\n event SignerReplacement(address indexed newSigner);\n event OutcomeAssignment(int outcome);\n\n /*\n * Storage\n */\n address public signer;\n bytes32 public descriptionHash;\n uint nonce;\n bool public isSet;\n int public outcome;\n\n /*\n * Modifiers\n */\n modifier isSigner () {\n // Only signer is allowed to proceed\n require(msg.sender == signer);\n _;\n }\n}\n\ncontract SignedMessageOracleProxy is Proxy, SignedMessageOracleData {\n\n /// @dev Constructor sets signer address based on signature\n /// @param _descriptionHash Hash identifying off chain event description\n /// @param v Signature parameter\n /// @param r Signature parameter\n /// @param s Signature parameter\n constructor(address proxied, bytes32 _descriptionHash, uint8 v, bytes32 r, bytes32 s)\n Proxy(proxied)\n public\n {\n signer = ecrecover(_descriptionHash, v, r, s);\n descriptionHash = _descriptionHash;\n }\n}\n\n/// @title Signed message oracle contract - Allows to set an outcome with a signed message\n/// @author Stefan George - <stefan@gnosis.pm>\ncontract SignedMessageOracle is Proxied, Oracle, SignedMessageOracleData {\n\n /*\n * Public functions\n */\n /// @dev Replaces signer\n /// @param newSigner New signer\n /// @param _nonce Unique nonce to prevent replay attacks\n /// @param v Signature parameter\n /// @param r Signature parameter\n /// @param s Signature parameter\n function replaceSigner(address newSigner, uint _nonce, uint8 v, bytes32 r, bytes32 s)\n public\n isSigner\n {\n // Result is not set yet and nonce and signer are valid\n require( !isSet\n && _nonce > nonce\n && signer == ecrecover(keccak256(abi.encodePacked(descriptionHash, newSigner, _nonce)), v, r, s));\n nonce = _nonce;\n signer = newSigner;\n emit SignerReplacement(newSigner);\n }\n\n /// @dev Sets outcome based on signed message\n /// @param _outcome Signed event outcome\n /// @param v Signature parameter\n /// @param r Signature parameter\n /// @param s Signature parameter\n function setOutcome(int _outcome, uint8 v, bytes32 r, bytes32 s)\n public\n {\n // Result is not set yet and signer is valid\n require( !isSet\n && signer == ecrecover(keccak256(abi.encodePacked(descriptionHash, _outcome)), v, r, s));\n isSet = true;\n outcome = _outcome;\n emit OutcomeAssignment(_outcome);\n }\n\n /// @dev Returns if winning outcome\n /// @return Is outcome set?\n function isOutcomeSet()\n public\n view\n returns (bool)\n {\n return isSet;\n }\n\n /// @dev Returns winning outcome\n /// @return Outcome\n function getOutcome()\n public\n view\n returns (int)\n {\n return outcome;\n }\n}\n", "sourcePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/SignedMessageOracle.sol", "ast": { "absolutePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/SignedMessageOracle.sol", "exportedSymbols": { "SignedMessageOracle": [ 5030 ], "SignedMessageOracleData": [ 4875 ], "SignedMessageOracleProxy": [ 4910 ] }, "id": 5031, "nodeType": "SourceUnit", "nodes": [ { "id": 4843, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:23" }, { "absolutePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/Oracle.sol", "file": "../Oracles/Oracle.sol", "id": 4844, "nodeType": "ImportDirective", "scope": 5031, "sourceUnit": 4842, "src": "24:31:23", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@gnosis.pm/util-contracts/contracts/Proxy.sol", "file": "@gnosis.pm/util-contracts/contracts/Proxy.sol", "id": 4845, "nodeType": "ImportDirective", "scope": 5031, "sourceUnit": 6829, "src": "56:55:23", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "contract", "documentation": null, "fullyImplemented": true, "id": 4875, "linearizedBaseContracts": [ 4875 ], "name": "SignedMessageOracleData", "nodeType": "ContractDefinition", "nodes": [ { "anonymous": false, "documentation": null, "id": 4849, "name": "SignerReplacement", "nodeType": "EventDefinition", "parameters": { "id": 4848, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4847, "indexed": true, "name": "newSigner", "nodeType": "VariableDeclaration", "scope": 4849, "src": "208:25:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4846, "name": "address", "nodeType": "ElementaryTypeName", "src": "208:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "207:27:23" }, "src": "184:51:23" }, { "anonymous": false, "documentation": null, "id": 4853, "name": "OutcomeAssignment", "nodeType": "EventDefinition", "parameters": { "id": 4852, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4851, "indexed": false, "name": "outcome", "nodeType": "VariableDeclaration", "scope": 4853, "src": "264:11:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_int256", "typeString": "int256" }, "typeName": { "id": 4850, "name": "int", "nodeType": "ElementaryTypeName", "src": "264:3:23", "typeDescriptions": { "typeIdentifier": "t_int256", "typeString": "int256" } }, "value": null, "visibility": "internal" } ], "src": "263:13:23" }, "src": "240:37:23" }, { "constant": false, "id": 4855, "name": "signer", "nodeType": "VariableDeclaration", "scope": 4875, "src": "314:21:23", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4854, "name": "address", "nodeType": "ElementaryTypeName", "src": "314:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "public" }, { "constant": false, "id": 4857, "name": "descriptionHash", "nodeType": "VariableDeclaration", "scope": 4875, "src": "341:30:23", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 4856, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "341:7:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "public" }, { "constant": false, "id": 4859, "name": "nonce", "nodeType": "VariableDeclaration", "scope": 4875, "src": "377:10:23", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4858, "name": "uint", "nodeType": "ElementaryTypeName", "src": "377:4:23", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4861, "name": "isSet", "nodeType": "VariableDeclaration", "scope": 4875, "src": "393:17:23", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4860, "name": "bool", "nodeType": "ElementaryTypeName", "src": "393:4:23", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "public" }, { "constant": false, "id": 4863, "name": "outcome", "nodeType": "VariableDeclaration", "scope": 4875, "src": "416:18:23", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_int256", "typeString": "int256" }, "typeName": { "id": 4862, "name": "int", "nodeType": "ElementaryTypeName", "src": "416:3:23", "typeDescriptions": { "typeIdentifier": "t_int256", "typeString": "int256" } }, "value": null, "visibility": "public" }, { "body": { "id": 4873, "nodeType": "Block", "src": "495:102:23", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 4869, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4866, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7920, "src": "558:3:23", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 4867, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "558:10:23", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 4868, "name": "signer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4855, "src": "572:6:23", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "558:20:23", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 4865, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 7923, 7924 ], "referencedDeclaration": 7923, "src": "550:7:23", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 4870, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "550:29:23", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4871, "nodeType": "ExpressionStatement", "src": "550:29:23" }, { "id": 4872, "nodeType": "PlaceholderStatement", "src": "589:1:23" } ] }, "documentation": null, "id": 4874, "name": "isSigner", "nodeType": "ModifierDefinition", "parameters": { "id": 4864, "nodeType": "ParameterList", "parameters": [], "src": "492:2:23" }, "src": "474:123:23", "visibility": "internal" } ], "scope": 5031, "src": "114:485:23" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 4876, "name": "Proxy", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 6828, "src": "638:5:23", "typeDescriptions": { 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"isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 4895, "name": "signer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4855, "src": "1066:6:23", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4897, "name": "_descriptionHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4883, "src": "1085:16:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 4898, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4885, "src": "1103:1:23", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "argumentTypes": null, "id": 4899, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4887, "src": "1106:1:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 4900, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4889, "src": "1109:1:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 4896, "name": "ecrecover", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 7912, "src": "1075:9:23", "typeDescriptions": { "typeIdentifier": "t_function_ecrecover_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address)" } }, "id": 4901, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1075:36:23", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "1066:45:23", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 4903, "nodeType": "ExpressionStatement", "src": "1066:45:23" }, { "expression": { "argumentTypes": null, "id": 4906, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 4904, "name": "descriptionHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4857, "src": "1121:15:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 4905, "name": "_descriptionHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4883, "src": "1139:16:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "1121:34:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 4907, "nodeType": "ExpressionStatement", "src": "1121:34:23" } ] }, "documentation": "@dev Constructor sets signer address based on signature\n @param _descriptionHash Hash identifying off chain event description\n @param v Signature parameter\n @param r Signature parameter\n @param s Signature parameter", "id": 4909, "implemented": true, "kind": "constructor", "modifiers": [ { "arguments": [ { "argumentTypes": null, "id": 4892, "name": "proxied", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4881, "src": "1028:7:23", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "id": 4893, "modifierName": { "argumentTypes": null, "id": 4891, 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