@gnosis.pm/pm-contracts

{ "contractName": "UltimateOracleProxy", "abi": [ { "constant": true, "inputs": [], "name": "forwardedOracle", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "frontRunnerPeriod", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "frontRunner", "outputs": [ { "name": "", "type": "int256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "totalAmount", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "", "type": "int256" } ], "name": "totalOutcomeAmounts", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "forwardedOutcomeSetTimestamp", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "frontRunnerSetTimestamp", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "forwardedOutcome", "outputs": [ { "name": "", "type": "int256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "challengeAmount", "outputs": [ { "name": "", "type": "uint256" } ], "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": "collateralToken", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "", "type": "address" }, { "name": "", "type": "int256" } ], "name": "outcomeAmounts", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "spreadMultiplier", "outputs": [ { "name": "", "type": "uint8" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "challengePeriod", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "inputs": [ { "name": "proxied", "type": "address" }, { "name": "_forwardedOracle", "type": "address" }, { "name": "_collateralToken", "type": "address" }, { "name": "_spreadMultiplier", "type": "uint8" }, { "name": "_challengePeriod", "type": "uint256" }, { "name": "_challengeAmount", "type": "uint256" }, { "name": "_frontRunnerPeriod", "type": "uint256" } ], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "payable": true, "stateMutability": "payable", "type": "fallback" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "outcome", "type": "int256" } ], "name": "ForwardedOracleOutcomeAssignment", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "sender", "type": "address" }, { "indexed": false, "name": "outcome", "type": "int256" } ], "name": "OutcomeChallenge", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "sender", "type": "address" }, { "indexed": false, "name": "outcome", "type": "int256" }, { "indexed": false, "name": "amount", "type": "uint256" } ], "name": "OutcomeVote", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "sender", "type": "address" }, { "indexed": false, "name": "amount", "type": "uint256" } ], "name": "Withdrawal", "type": "event" } ], "metadata": 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sets ultimate oracle properties\",\"params\":{\"_challengeAmount\":\"Amount to challenge the outcome\",\"_challengePeriod\":\"Time to challenge oracle outcome\",\"_collateralToken\":\"Collateral token address\",\"_forwardedOracle\":\"Oracle address\",\"_frontRunnerPeriod\":\"Time to overbid the front-runner\",\"_spreadMultiplier\":\"Defines the spread as a multiple of the money bet on other outcomes\"}}}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/UltimateOracle.sol\":\"UltimateOracleProxy\"},\"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/UltimateOracle.sol\":{\"keccak256\":\"0x58cd0fc631023fdc5be8ca10d38d470c45b9bd6a07c55a32b1e37c5017c15c9d\",\"urls\":[\"bzzr://75b2c3baa37871dbb7604d38fc3c1a113dec600c55f7ad22a97f41675cf6c873\"]},\"@gnosis.pm/util-contracts/contracts/Proxy.sol\":{\"keccak256\":\"0xeab0e83a9ec9e7f052c0455a11577061ec6d1994db08dae429abd6faaabf6555\",\"urls\":[\"bzzr://b2c1273d4ec30e2f9e768eea8c510f8493a7359b03e01923d93eea86b57ec145\"]},\"openzeppelin-solidity/contracts/drafts/SignedSafeMath.sol\":{\"keccak256\":\"0xb4b45cd5475c318722ac0f8d7e2b9e77fee6f4f36374c1110fe615d50fbc0650\",\"urls\":[\"bzzr://a90fb457269c8a03ec5b811c71acef08a2751a4d2019b0661328610f9357dae7\"]},\"openzeppelin-solidity/contracts/math/SafeMath.sol\":{\"keccak256\":\"0x4ccf2d7b51873db1ccfd54ca2adae5eac3b184f9699911ed4490438419f1c690\",\"urls\":[\"bzzr://1604f5b6d6e916c154efd8c6720cda069e5ba32dfa0a9dedf2b42e5b02d07f89\"]},\"openzeppelin-solidity/contracts/token/ERC20/ERC20.sol\":{\"keccak256\":\"0x852793a3c2f86d336a683b30d688ec3dcfc57451af5a2bf5975cda3b7191a901\",\"urls\":[\"bzzr://07fb42206812a17c1f71e548cfa5cec6f9aa1ae0ca5df870718ca4aa9759d1a5\"]},\"openzeppelin-solidity/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0x90e8c2521653bbb1768b05889c5760031e688d9cd361f167489b89215e201b95\",\"urls\":[\"bzzr://aa8b45b57edafc3d67bc5d916327ea16807fae33f753ca163ae0c4061b789766\"]}},\"version\":1}", 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"source": "pragma solidity ^0.5.0;\nimport \"../Oracles/Oracle.sol\";\nimport \"openzeppelin-solidity/contracts/token/ERC20/ERC20.sol\";\nimport \"openzeppelin-solidity/contracts/math/SafeMath.sol\";\nimport \"openzeppelin-solidity/contracts/drafts/SignedSafeMath.sol\";\nimport \"@gnosis.pm/util-contracts/contracts/Proxy.sol\";\n\n\ncontract UltimateOracleData {\n\n /*\n * Events\n */\n event ForwardedOracleOutcomeAssignment(int outcome);\n event OutcomeChallenge(address indexed sender, int outcome);\n event OutcomeVote(address indexed sender, int outcome, uint amount);\n event Withdrawal(address indexed sender, uint amount);\n\n /*\n * Storage\n */\n Oracle public forwardedOracle;\n ERC20 public collateralToken;\n uint8 public spreadMultiplier;\n uint public challengePeriod;\n uint public challengeAmount;\n uint public frontRunnerPeriod;\n\n int public forwardedOutcome;\n uint public forwardedOutcomeSetTimestamp;\n int public frontRunner;\n uint public frontRunnerSetTimestamp;\n\n uint public totalAmount;\n mapping (int => uint) public totalOutcomeAmounts;\n mapping (address => mapping (int => uint)) public outcomeAmounts;\n}\n\ncontract UltimateOracleProxy is Proxy, UltimateOracleData {\n\n /// @dev Constructor sets ultimate oracle properties\n /// @param _forwardedOracle Oracle address\n /// @param _collateralToken Collateral token address\n /// @param _spreadMultiplier Defines the spread as a multiple of the money bet on other outcomes\n /// @param _challengePeriod Time to challenge oracle outcome\n /// @param _challengeAmount Amount to challenge the outcome\n /// @param _frontRunnerPeriod Time to overbid the front-runner\n constructor(\n address proxied,\n Oracle _forwardedOracle,\n ERC20 _collateralToken,\n uint8 _spreadMultiplier,\n uint _challengePeriod,\n uint _challengeAmount,\n uint _frontRunnerPeriod\n )\n Proxy(proxied)\n public\n {\n // Validate inputs\n require( address(_forwardedOracle) != address(0)\n && address(_collateralToken) != address(0)\n && _spreadMultiplier >= 2\n && _challengePeriod > 0\n && _challengeAmount > 0\n && _frontRunnerPeriod > 0);\n forwardedOracle = _forwardedOracle;\n collateralToken = _collateralToken;\n spreadMultiplier = _spreadMultiplier;\n challengePeriod = _challengePeriod;\n challengeAmount = _challengeAmount;\n frontRunnerPeriod = _frontRunnerPeriod;\n }\n}\n\n/// @title Ultimate oracle contract - Allows to swap oracle result for ultimate oracle result\n/// @author Stefan George - <stefan@gnosis.pm>\ncontract UltimateOracle is Proxied, Oracle, UltimateOracleData {\n using SignedSafeMath for int;\n using SafeMath for uint;\n\n /*\n * Public functions\n */\n /// @dev Allows to set oracle outcome\n function setForwardedOutcome()\n public\n {\n // There was no challenge and the outcome was not set yet in the ultimate oracle but in the forwarded oracle\n require( !isChallenged()\n && forwardedOutcomeSetTimestamp == 0\n && forwardedOracle.isOutcomeSet());\n forwardedOutcome = forwardedOracle.getOutcome();\n forwardedOutcomeSetTimestamp = now;\n emit ForwardedOracleOutcomeAssignment(forwardedOutcome);\n }\n\n /// @dev Allows to challenge the oracle outcome\n /// @param _outcome Outcome to bid on\n function challengeOutcome(int _outcome)\n public\n {\n // There was no challenge yet or the challenge period expired\n require( !isChallenged()\n && !isChallengePeriodOver()\n && collateralToken.transferFrom(msg.sender, address(this), challengeAmount));\n outcomeAmounts[msg.sender][_outcome] = challengeAmount;\n totalOutcomeAmounts[_outcome] = challengeAmount;\n totalAmount = challengeAmount;\n frontRunner = _outcome;\n frontRunnerSetTimestamp = now;\n emit OutcomeChallenge(msg.sender, _outcome);\n }\n\n /// @dev Allows to challenge the oracle outcome\n /// @param _outcome Outcome to bid on\n /// @param amount Amount to bid\n function voteForOutcome(int _outcome, uint amount)\n public\n {\n uint maxAmount = (totalAmount - totalOutcomeAmounts[_outcome]).mul(spreadMultiplier);\n\n if (maxAmount > totalOutcomeAmounts[_outcome])\n maxAmount -= totalOutcomeAmounts[_outcome];\n else\n maxAmount = 0;\n\n if (amount > maxAmount)\n amount = maxAmount;\n // Outcome is challenged and front runner period is not over yet and tokens can be transferred\n require( isChallenged()\n && !isFrontRunnerPeriodOver()\n && collateralToken.transferFrom(msg.sender, address(this), amount));\n outcomeAmounts[msg.sender][_outcome] = outcomeAmounts[msg.sender][_outcome].add(amount);\n totalOutcomeAmounts[_outcome] = totalOutcomeAmounts[_outcome].add(amount);\n totalAmount = totalAmount.add(amount);\n if (_outcome != frontRunner && totalOutcomeAmounts[_outcome] > totalOutcomeAmounts[frontRunner])\n {\n frontRunner = _outcome;\n frontRunnerSetTimestamp = now;\n }\n emit OutcomeVote(msg.sender, _outcome, amount);\n }\n\n /// @dev Withdraws winnings for user\n /// @return Winnings\n function withdraw()\n public\n returns (uint amount)\n {\n // Outcome was challenged and ultimate outcome decided\n require(isFrontRunnerPeriodOver());\n amount = totalAmount.mul(outcomeAmounts[msg.sender][frontRunner]) / totalOutcomeAmounts[frontRunner];\n outcomeAmounts[msg.sender][frontRunner] = 0;\n // Transfer earnings to contributor\n require(collateralToken.transfer(msg.sender, amount));\n emit Withdrawal(msg.sender, amount);\n }\n\n /// @dev Checks if time to challenge the outcome is over\n /// @return Is challenge period over?\n function isChallengePeriodOver()\n public\n view\n returns (bool)\n {\n return forwardedOutcomeSetTimestamp != 0 && now.sub(forwardedOutcomeSetTimestamp) > challengePeriod;\n }\n\n /// @dev Checks if time to overbid the front runner is over\n /// @return Is front runner period over?\n function isFrontRunnerPeriodOver()\n public\n view\n returns (bool)\n {\n return frontRunnerSetTimestamp != 0 && now.sub(frontRunnerSetTimestamp) > frontRunnerPeriod;\n }\n\n /// @dev Checks if outcome was challenged\n /// @return Is challenged?\n function isChallenged()\n public\n view\n returns (bool)\n {\n return frontRunnerSetTimestamp != 0;\n }\n\n /// @dev Returns if winning outcome is set\n /// @return Is outcome set?\n function isOutcomeSet()\n public\n view\n returns (bool)\n {\n return isChallengePeriodOver() && !isChallenged()\n || isFrontRunnerPeriodOver();\n }\n\n /// @dev Returns winning outcome\n /// @return Outcome\n function getOutcome()\n public\n view\n returns (int)\n {\n if (isFrontRunnerPeriodOver())\n return frontRunner;\n return forwardedOutcome;\n }\n}\n", "sourcePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/UltimateOracle.sol", "ast": { "absolutePath": "/home/alan/src/github.com/gnosis/pm-contracts/contracts/Oracles/UltimateOracle.sol", "exportedSymbols": { "UltimateOracle": [ 5603 ], "UltimateOracleData": [ 5165 ], "UltimateOracleProxy": [ 5249 ] }, "id": 5604, "nodeType": "SourceUnit", "nodes": [ { "id": 5103, "literals": [ "solidity", "^", "0.5", 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