@gnosis.pm/pm-contracts

{ "contractName": "SignedMessageOracle", "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": "masterCopy", "outputs": [ { "name": "", "type": "address" } ], "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" }, { "constant": false, "inputs": [ { "name": "newSigner", "type": "address" }, { "name": "_nonce", "type": "uint256" }, { "name": "v", "type": "uint8" }, { "name": "r", "type": "bytes32" }, { "name": "s", "type": "bytes32" } ], "name": "replaceSigner", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_outcome", "type": "int256" }, { "name": "v", "type": "uint8" }, { "name": "r", "type": "bytes32" }, { "name": "s", "type": "bytes32" } ], "name": "setOutcome", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "isOutcomeSet", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "getOutcome", "outputs": [ { "name": "", "type": "int256" } ], "payable": false, "stateMutability": "view", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.6+commit.b259423e\"},\"language\":\"Solidity\",\"output\":{\"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\":false,\"inputs\":[{\"name\":\"newSigner\",\"type\":\"address\"},{\"name\":\"_nonce\",\"type\":\"uint256\"},{\"name\":\"v\",\"type\":\"uint8\"},{\"name\":\"r\",\"type\":\"bytes32\"},{\"name\":\"s\",\"type\":\"bytes32\"}],\"name\":\"replaceSigner\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getOutcome\",\"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\":\"masterCopy\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"isSet\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"isOutcomeSet\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_outcome\",\"type\":\"int256\"},{\"name\":\"v\",\"type\":\"uint8\"},{\"name\":\"r\",\"type\":\"bytes32\"},{\"name\":\"s\",\"type\":\"bytes32\"}],\"name\":\"setOutcome\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"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\"}],\"devdoc\":{\"author\":\"Stefan George - <stefan@gnosis.pm>\",\"methods\":{\"getOutcome()\":{\"details\":\"Returns winning outcome\",\"return\":\"Outcome\"},\"isOutcomeSet()\":{\"details\":\"Returns if winning outcome\",\"return\":\"Is outcome set?\"},\"replaceSigner(address,uint256,uint8,bytes32,bytes32)\":{\"details\":\"Replaces signer\",\"params\":{\"_nonce\":\"Unique nonce to prevent replay attacks\",\"newSigner\":\"New signer\",\"r\":\"Signature parameter\",\"s\":\"Signature parameter\",\"v\":\"Signature parameter\"}},\"setOutcome(int256,uint8,bytes32,bytes32)\":{\"details\":\"Sets outcome based on signed message\",\"params\":{\"_outcome\":\"Signed event outcome\",\"r\":\"Signature parameter\",\"s\":\"Signature parameter\",\"v\":\"Signature parameter\"}}},\"title\":\"Signed message oracle contract - Allows to set an outcome with a signed message\"},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/SignedMessageOracle.sol\":\"SignedMessageOracle\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/Oracle.sol\":{\"keccak256\":\"0xf4d12f4a59c17e66dfa6791188f621a8914e2038a4e3f72d6fc9fb903ca8e18e\",\"urls\":[\"bzzr://a477ccd203e677cc904b1a4f8fcc85251c5b5e09c5c10eed27e01318584b16d1\"]},\"/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/SignedMessageOracle.sol\":{\"keccak256\":\"0x0707787e68ac6a5efa4f74cbaee26a233d300803283fb61b699121fd8714367a\",\"urls\":[\"bzzr://e30da975b38e3a97a15b3a5354721a381fb5c2544154a00bee84620e834d55b5\"]},\"@gnosis.pm/util-contracts/contracts/Proxy.sol\":{\"keccak256\":\"0xeab0e83a9ec9e7f052c0455a11577061ec6d1994db08dae429abd6faaabf6555\",\"urls\":[\"bzzr://b2c1273d4ec30e2f9e768eea8c510f8493a7359b03e01923d93eea86b57ec145\"]}},\"version\":1}", 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"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 ], 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