{ "contractName": "DepositLiquidation", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.5.17+commit.d19bba13\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"methods\":{\"collateralizationPercentage(DepositUtils.Deposit storage)\":{\"details\":\"Compares the bond value and lot value.\",\"params\":{\"_d\":\"Deposit storage pointer.\"},\"return\":\"Collateralization percentage as uint.\"},\"exitCourtesyCall(DepositUtils.Deposit storage)\":{\"details\":\"Only callable if collateral is sufficient and the deposit is not expiring.\",\"params\":{\"_d\":\"Deposit storage pointer.\"}},\"notifyCourtesyCall(DepositUtils.Deposit storage)\":{\"details\":\"Calls out to the system for oracle info.\",\"params\":{\"_d\":\"Deposit storage pointer.\"}},\"notifyCourtesyCallExpired(DepositUtils.Deposit storage)\":{\"details\":\"This is treated as an abort, rather than fraud.\",\"params\":{\"_d\":\"Deposit storage pointer.\"}},\"notifyUndercollateralizedLiquidation(DepositUtils.Deposit storage)\":{\"details\":\"Calls out to the system for oracle info.\",\"params\":{\"_d\":\"Deposit storage pointer.\"}},\"provideECDSAFraudProof(DepositUtils.Deposit storage,uint8,bytes32,bytes32,bytes32,bytes)\":{\"details\":\"Calls out to the keep to verify if there was fraud.\",\"params\":{\"_d\":\"Deposit storage pointer.\",\"_preimage\":\"The sha256 preimage of the digest.\",\"_r\":\"Signature R value.\",\"_s\":\"Signature S value.\",\"_signedDigest\":\"The digest signed by the signature vrs tuple.\",\"_v\":\"Signature recovery value.\"}},\"purchaseSignerBondsAtAuction(DepositUtils.Deposit storage)\":{\"details\":\"For interface, reading auctionValue will give a past value. the current is better.\",\"params\":{\"_d\":\"Deposit storage pointer.\"}},\"submitSignatureFraud(DepositUtils.Deposit storage,uint8,bytes32,bytes32,bytes32,bytes)\":{\"details\":\"Calls out to the keep contract. this could get expensive if preimage is large.\",\"params\":{\"_d\":\"Deposit storage pointer.\",\"_preimage\":\"The sha256 preimage of the digest.\",\"_r\":\"Signature R value.\",\"_s\":\"Signature S value.\",\"_signedDigest\":\"The digest signed by the signature vrs tuple.\",\"_v\":\"Signature recovery value.\"}}}},\"userdoc\":{\"methods\":{\"collateralizationPercentage(DepositUtils.Deposit storage)\":{\"notice\":\"Determines the collateralization percentage of the signing group.\"},\"exitCourtesyCall(DepositUtils.Deposit storage)\":{\"notice\":\"Goes from courtesy call to active.\"},\"notifyCourtesyCall(DepositUtils.Deposit storage)\":{\"notice\":\"Notify the contract that the signers are undercollateralized.\"},\"notifyCourtesyCallExpired(DepositUtils.Deposit storage)\":{\"notice\":\"Notifies the contract that the courtesy period has elapsed.\"},\"notifyUndercollateralizedLiquidation(DepositUtils.Deposit storage)\":{\"notice\":\"Notify the contract that the signers are undercollateralized.\"},\"provideECDSAFraudProof(DepositUtils.Deposit storage,uint8,bytes32,bytes32,bytes32,bytes)\":{\"notice\":\"Anyone can provide a signature that was not requested to prove fraud.\"},\"purchaseSignerBondsAtAuction(DepositUtils.Deposit storage)\":{\"notice\":\"Closes an auction and purchases the signer bonds. Payout to buyer, funder, then signers if not fraud.\"},\"submitSignatureFraud(DepositUtils.Deposit storage,uint8,bytes32,bytes32,bytes32,bytes)\":{\"notice\":\"Notifies the keep contract of fraud. Reverts if not fraud.\"}}}},\"settings\":{\"compilationTarget\":{\"/home/runner/work/tbtc/tbtc/solidity/contracts/deposit/DepositLiquidation.sol\":\"DepositLiquidation\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"/home/runner/work/tbtc/tbtc/solidity/contracts/DepositLog.sol\":{\"keccak256\":\"0xd2422abaf64bf2d28f4c0548bc31c3d0e4c5f3e4414486c149b773bea0c9db0a\",\"urls\":[\"bzz-raw://c4b0e3caea108ce67da5922906753dc1a1f87cee923e7c32260239150f2152bb\",\"dweb:/ipfs/QmcHcftf4M6ZyuFG725QiFGHuAtz6zDQZ9HCEaoP5Wb6Fd\"]},\"/home/runner/work/tbtc/tbtc/solidity/contracts/deposit/DepositLiquidation.sol\":{\"keccak256\":\"0x6ec98705ac0cfc20f2e94069ba88c74816c40283c47b3086cf619b69d8a15379\",\"urls\":[\"bzz-raw://981e7e1ababfe4bb7bb35251679f59d188348c416af29822794011a0e48f2cd3\",\"dweb:/ipfs/QmTpPQCYP3qzKdcMBLBZGRSM2X6rgR1CZmYDQ7SHP4pjrb\"]},\"/home/runner/work/tbtc/tbtc/solidity/contracts/deposit/DepositStates.sol\":{\"keccak256\":\"0x0b407fe4cfa56771c7cb0280e58c23e6c79089bb0f39ec9af83855103cfadce0\",\"urls\":[\"bzz-raw://b06c9ff8c10125cd7dcee7167fd081c95248c97c699a4dfc92bf65d68774f5f1\",\"dweb:/ipfs/QmcdTkj1XtJcPhF9pxr56xV4DW3SxGaaiE5PeGxbYVoHL3\"]},\"/home/runner/work/tbtc/tbtc/solidity/contracts/deposit/DepositUtils.sol\":{\"keccak256\":\"0xc18e532fc384f45567abcf7fbe7bccb885308d63ffeed41d9cf845573a289b98\",\"urls\":[\"bzz-raw://7250e8fce13326313e64d2f24e093bd51c9fdba939b8370f64a1fe820814275b\",\"dweb:/ipfs/QmVfX5w4xN6gxoqbdgPeeTbBvFtxxaNYWSknSY7JDtve2b\"]},\"/home/runner/work/tbtc/tbtc/solidity/contracts/deposit/OutsourceDepositLogging.sol\":{\"keccak256\":\"0x8bddca84b4106ea5d865b5e19c0d49f3dc94a7e614c7403ae05074eda01d6ee9\",\"urls\":[\"bzz-raw://65b05f6e04ae46a16194db335ad21dd806d0b07ad571a126b6981896890c8a4c\",\"dweb:/ipfs/QmTF4RgELhXX7pooNKwW8qNY7Sr7dFY7vfueApjTMa99jt\"]},\"/home/runner/work/tbtc/tbtc/solidity/contracts/interfaces/ITBTCSystem.sol\":{\"keccak256\":\"0xd8530ab1baddbdfbba6c1b03e547375afe79493b9948d645f94fc0da12ec953b\",\"urls\":[\"bzz-raw://713285a0a4d865a37f3770ce848c20f7277e1540c0a8aa43c2ae0966a7c3df9a\",\"dweb:/ipfs/QmaPiXxvySt9UDmQtVGidh8TQ4XJdxY2X61rEBd8346ELi\"]},\"/home/runner/work/tbtc/tbtc/solidity/contracts/interfaces/ITokenRecipient.sol\":{\"keccak256\":\"0x4ac6830ad44d0b0d70ebabc60150e9c915c7c0bd0129ef868d5d2cd8da0c32bd\",\"urls\":[\"bzz-raw://a5c6465285add41f07a951f90405800a8802e323ea11e9c7bdb5625ce109c7f7\",\"dweb:/ipfs/QmRf7B4WxsS7gbSwUotgQM633BQc2ye7rhYC1RNVFamBfp\"]},\"/home/runner/work/tbtc/tbtc/solidity/contracts/system/DepositFactoryAuthority.sol\":{\"keccak256\":\"0xd8e81ec58dea6a6bcc554e8c7e6c58898ab11a410c3f61224330cbe833992add\",\"urls\":[\"bzz-raw://9d2b23cf1e2f98eb77acf6ae62933e48494113e1d6091146459fd79a635f1dcf\",\"dweb:/ipfs/QmPK3nTmcrScDavDSXGHvonhfik3BJ55qhwSnUmhzL5QUE\"]},\"/home/runner/work/tbtc/tbtc/solidity/contracts/system/FeeRebateToken.sol\":{\"keccak256\":\"0x3d9980b4b18be7e69364b93581d86d08dd2c66fc76b2f9f0af0b4911dc648318\",\"urls\":[\"bzz-raw://751dae1cd68c285a22b513d515074eb6704e11e00ba8196f360d47dc8551dd86\",\"dweb:/ipfs/QmRe5u8bjSd2CMvjgWMzpeea3VdcqEGwAP91zvjxgur8o8\"]},\"/home/runner/work/tbtc/tbtc/solidity/contracts/system/TBTCConstants.sol\":{\"keccak256\":\"0x74833fb25cf9f24716d563c8fad0fd6172d03577dc85ab4271ca4754285ee915\",\"urls\":[\"bzz-raw://62d37b71546ea52f0c86170b588b021a488785e8570f904f0d2bcfecee93f6a7\",\"dweb:/ipfs/QmePuD631VYpEproKbap8cPXmWeb5mYjU6bwEWnxKCVWbz\"]},\"/home/runner/work/tbtc/tbtc/solidity/contracts/system/TBTCDepositToken.sol\":{\"keccak256\":\"0xd9238bbd83f5352706426103a0708ad7c00ffbd90340a4b3bab03d2c5371e48b\",\"urls\":[\"bzz-raw://f1fc94f00aeabd49bd0f8ecf372213e83c949454c28fa672a46dd12d9a0b4311\",\"dweb:/ipfs/QmaCzqi2g4GSvzHDDES61FauDmdTGGyZrCkK1BdxpMqYa3\"]},\"/home/runner/work/tbtc/tbtc/solidity/contracts/system/TBTCToken.sol\":{\"keccak256\":\"0x167b07029df8d350996d7f82d853437d1a2562401eeac98037c2eb4c5f295319\",\"urls\":[\"bzz-raw://7d2601ac8dcd5d59b3e479a61262de2162c96ed7ad1cd161331e2e4500b8346a\",\"dweb:/ipfs/QmWVjBSvHFg9W5zsSxgdpNSYKgfLa28fr3mPjjKQaDBxmk\"]},\"/home/runner/work/tbtc/tbtc/solidity/contracts/system/VendingMachineAuthority.sol\":{\"keccak256\":\"0x7ad8a2cee5e6bbc187d04b147dc0d2bc2ae12bb8c3680870be9013dd5543bfd6\",\"urls\":[\"bzz-raw://733f2370c788437b0034c40a8df07f4714009769ed8134a9c656e2a103996687\",\"dweb:/ipfs/Qma9LAGQDzyUvsbhLx3FUKRCx3FmnoZuMxG4SUdjLr8bRm\"]},\"@keep-network/keep-ecdsa/contracts/api/IBondedECDSAKeep.sol\":{\"keccak256\":\"0x8f1edc0a2dfb4d167d190989ebc1c4256664e50ec1f82dfaeb25fa5d4a76a35a\",\"urls\":[\"bzz-raw://e815868907cc082fee1e3964be7de12da2161863d68dd1532a74e3a97bacf533\",\"dweb:/ipfs/Qmd8DqutKSwxh38WWA1ydftNkiAxSD9sqxa7qf1asHKA8c\"]},\"@summa-tx/bitcoin-spv-sol/contracts/BTCUtils.sol\":{\"keccak256\":\"0x461cc52e40ba53e646f5c9505b992baa3d5b3c98ae5718561e61b3bc6c726d52\",\"urls\":[\"bzz-raw://90cf2e608b660671642a616ec044e2a39e8ceb7079315b6133ec978c47af9f98\",\"dweb:/ipfs/QmX4hyYS99RYWiQ7BwLXuvQpU5x62YbjJWLgYFwrPkYbzT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"source": "pragma solidity 0.5.17;\n\nimport {BTCUtils} from \"@summa-tx/bitcoin-spv-sol/contracts/BTCUtils.sol\";\nimport {BytesLib} from \"@summa-tx/bitcoin-spv-sol/contracts/BytesLib.sol\";\nimport {\n IBondedECDSAKeep\n} from \"@keep-network/keep-ecdsa/contracts/api/IBondedECDSAKeep.sol\";\nimport {SafeMath} from \"openzeppelin-solidity/contracts/math/SafeMath.sol\";\nimport {DepositStates} from \"./DepositStates.sol\";\nimport {DepositUtils} from \"./DepositUtils.sol\";\nimport {TBTCConstants} from \"../system/TBTCConstants.sol\";\nimport {OutsourceDepositLogging} from \"./OutsourceDepositLogging.sol\";\nimport {TBTCToken} from \"../system/TBTCToken.sol\";\nimport {ITBTCSystem} from \"../interfaces/ITBTCSystem.sol\";\n\nlibrary DepositLiquidation {\n using BTCUtils for bytes;\n using BytesLib for bytes;\n using SafeMath for uint256;\n using SafeMath for uint64;\n\n using DepositUtils for DepositUtils.Deposit;\n using DepositStates for DepositUtils.Deposit;\n using OutsourceDepositLogging for DepositUtils.Deposit;\n\n /// @notice Notifies the keep contract of fraud. Reverts if not fraud.\n /// @dev Calls out to the keep contract. this could get expensive if preimage\n /// is large.\n /// @param _d Deposit storage pointer.\n /// @param _v Signature recovery value.\n /// @param _r Signature R value.\n /// @param _s Signature S value.\n /// @param _signedDigest The digest signed by the signature vrs tuple.\n /// @param _preimage The sha256 preimage of the digest.\n function submitSignatureFraud(\n DepositUtils.Deposit storage _d,\n uint8 _v,\n bytes32 _r,\n bytes32 _s,\n bytes32 _signedDigest,\n bytes memory _preimage\n ) public {\n IBondedECDSAKeep _keep = IBondedECDSAKeep(_d.keepAddress);\n _keep.submitSignatureFraud(_v, _r, _s, _signedDigest, _preimage);\n }\n\n /// @notice Determines the collateralization percentage of the signing group.\n /// @dev Compares the bond value and lot value.\n /// @param _d Deposit storage pointer.\n /// @return Collateralization percentage as uint.\n function collateralizationPercentage(DepositUtils.Deposit storage _d)\n public\n view\n returns (uint256)\n {\n // Determine value of the lot in wei\n uint256 _satoshiPrice = _d.fetchBitcoinPrice();\n uint64 _lotSizeSatoshis = _d.lotSizeSatoshis;\n uint256 _lotValue = _lotSizeSatoshis.mul(_satoshiPrice);\n\n // Amount of wei the signers have\n uint256 _bondValue = _d.fetchBondAmount();\n\n // This converts into a percentage\n return (_bondValue.mul(100).div(_lotValue));\n }\n\n /// @dev Starts signer liquidation by seizing signer bonds.\n /// If the deposit is currently being redeemed, the redeemer\n /// receives the full bond value; otherwise, a falling price auction\n /// begins to buy 1 TBTC in exchange for a portion of the seized bonds;\n /// see purchaseSignerBondsAtAuction().\n /// @param _wasFraud True if liquidation is being started due to fraud, false if for any other reason.\n /// @param _d Deposit storage pointer.\n function startLiquidation(DepositUtils.Deposit storage _d, bool _wasFraud)\n internal\n {\n _d.logStartedLiquidation(_wasFraud);\n\n uint256 seized = _d.seizeSignerBonds();\n address redeemerAddress = _d.redeemerAddress;\n\n // Reclaim used state for gas savings\n _d.redemptionTeardown();\n\n // If we see fraud in the redemption flow, we shouldn't go to auction.\n // Instead give the full signer bond directly to the redeemer.\n if (_d.inRedemption() && _wasFraud) {\n _d.setLiquidated();\n _d.enableWithdrawal(redeemerAddress, seized);\n _d.logLiquidated();\n return;\n }\n\n _d.liquidationInitiator = msg.sender;\n _d.liquidationInitiated = block.timestamp; // Store the timestamp for auction\n\n if (_wasFraud) {\n _d.setFraudLiquidationInProgress();\n } else {\n _d.setLiquidationInProgress();\n }\n }\n\n /// @notice Anyone can provide a signature that was not requested to prove fraud.\n /// @dev Calls out to the keep to verify if there was fraud.\n /// @param _d Deposit storage pointer.\n /// @param _v Signature recovery value.\n /// @param _r Signature R value.\n /// @param _s Signature S value.\n /// @param _signedDigest The digest signed by the signature vrs tuple.\n /// @param _preimage The sha256 preimage of the digest.\n function provideECDSAFraudProof(\n DepositUtils.Deposit storage _d,\n uint8 _v,\n bytes32 _r,\n bytes32 _s,\n bytes32 _signedDigest,\n bytes memory _preimage\n ) public {\n // not external to allow bytes memory parameters\n require(!_d.inFunding(), \"Use provideFundingECDSAFraudProof instead\");\n require(\n !_d.inSignerLiquidation(),\n \"Signer liquidation already in progress\"\n );\n require(!_d.inEndState(), \"Contract has halted\");\n submitSignatureFraud(_d, _v, _r, _s, _signedDigest, _preimage);\n\n startLiquidation(_d, true);\n }\n\n /// @notice Closes an auction and purchases the signer bonds. Payout to buyer, funder, then signers if not fraud.\n /// @dev For interface, reading auctionValue will give a past value. the current is better.\n /// @param _d Deposit storage pointer.\n function purchaseSignerBondsAtAuction(DepositUtils.Deposit storage _d)\n external\n {\n bool _wasFraud = _d.inFraudLiquidationInProgress();\n require(_d.inSignerLiquidation(), \"No active auction\");\n\n _d.setLiquidated();\n _d.logLiquidated();\n\n // Send the TBTC to the redeemer if they exist, otherwise to the TDT\n // holder. If the TDT holder is the Vending Machine, burn it to maintain\n // the peg. This is because, if there is a redeemer set here, the TDT\n // holder has already been made whole at redemption request time.\n address tbtcRecipient = _d.redeemerAddress;\n if (tbtcRecipient == address(0)) {\n tbtcRecipient = _d.depositOwner();\n }\n uint256 lotSizeTbtc = _d.lotSizeTbtc();\n\n require(\n _d.tbtcToken.balanceOf(msg.sender) >= lotSizeTbtc,\n \"Not enough TBTC to cover outstanding debt\"\n );\n\n if (tbtcRecipient == _d.vendingMachineAddress) {\n _d.tbtcToken.burnFrom(msg.sender, lotSizeTbtc); // burn minimal amount to cover size\n } else {\n _d.tbtcToken.transferFrom(msg.sender, tbtcRecipient, lotSizeTbtc);\n }\n\n // Distribute funds to auction buyer\n uint256 valueToDistribute = _d.auctionValue();\n _d.enableWithdrawal(msg.sender, valueToDistribute);\n\n // Send any TBTC left to the Fee Rebate Token holder\n _d.distributeFeeRebate();\n\n // For fraud, pay remainder to the liquidation initiator.\n // For non-fraud, split 50-50 between initiator and signers. if the transfer amount is 1,\n // division will yield a 0 value which causes a revert; instead,\n // we simply ignore such a tiny amount and leave some wei dust in escrow\n uint256 contractEthBalance = address(this).balance;\n address payable initiator = _d.liquidationInitiator;\n\n if (initiator == address(0)) {\n initiator = address(0xdead);\n }\n if (contractEthBalance > valueToDistribute + 1) {\n uint256 remainingUnallocated =\n contractEthBalance.sub(valueToDistribute);\n if (_wasFraud) {\n _d.enableWithdrawal(initiator, remainingUnallocated);\n } else {\n // There will always be a liquidation initiator.\n uint256 split = remainingUnallocated.div(2);\n _d.pushFundsToKeepGroup(split);\n _d.enableWithdrawal(initiator, remainingUnallocated.sub(split));\n }\n }\n }\n\n /// @notice Notify the contract that the signers are undercollateralized.\n /// @dev Calls out to the system for oracle info.\n /// @param _d Deposit storage pointer.\n function notifyCourtesyCall(DepositUtils.Deposit storage _d) external {\n require(_d.inActive(), \"Can only courtesy call from active state\");\n require(\n collateralizationPercentage(_d) <\n _d.undercollateralizedThresholdPercent,\n \"Signers have sufficient collateral\"\n );\n _d.courtesyCallInitiated = block.timestamp;\n _d.setCourtesyCall();\n _d.logCourtesyCalled();\n }\n\n /// @notice Goes from courtesy call to active.\n /// @dev Only callable if collateral is sufficient and the deposit is not expiring.\n /// @param _d Deposit storage pointer.\n function exitCourtesyCall(DepositUtils.Deposit storage _d) external {\n require(_d.inCourtesyCall(), \"Not currently in courtesy call\");\n require(\n collateralizationPercentage(_d) >=\n _d.undercollateralizedThresholdPercent,\n \"Deposit is still undercollateralized\"\n );\n _d.setActive();\n _d.logExitedCourtesyCall();\n }\n\n /// @notice Notify the contract that the signers are undercollateralized.\n /// @dev Calls out to the system for oracle info.\n /// @param _d Deposit storage pointer.\n function notifyUndercollateralizedLiquidation(\n DepositUtils.Deposit storage _d\n ) external {\n require(\n _d.inRedeemableState(),\n \"Deposit not in active or courtesy call\"\n );\n require(\n collateralizationPercentage(_d) <\n _d.severelyUndercollateralizedThresholdPercent,\n \"Deposit has sufficient collateral\"\n );\n startLiquidation(_d, false);\n }\n\n /// @notice Notifies the contract that the courtesy period has elapsed.\n /// @dev This is treated as an abort, rather than fraud.\n /// @param _d Deposit storage pointer.\n function notifyCourtesyCallExpired(DepositUtils.Deposit storage _d)\n external\n {\n require(_d.inCourtesyCall(), \"Not in a courtesy call period\");\n require(\n block.timestamp >=\n _d.courtesyCallInitiated.add(\n TBTCConstants.getCourtesyCallTimeout()\n ),\n \"Courtesy period has not elapsed\"\n );\n startLiquidation(_d, false);\n }\n}\n", "sourcePath": "/home/runner/work/tbtc/tbtc/solidity/contracts/deposit/DepositLiquidation.sol", "ast": { "absolutePath": "/home/runner/work/tbtc/tbtc/solidity/contracts/deposit/DepositLiquidation.sol", "exportedSymbols": { "DepositLiquidation": [ 2330 ] }, "id": 2331, "nodeType": "SourceUnit", "nodes": [ { "id": 1759, "literals": [ "solidity", "0.5", ".17" ], "nodeType": "PragmaDirective", "src": "0:23:4" }, { "absolutePath": "@summa-tx/bitcoin-spv-sol/contracts/BTCUtils.sol", "file": "@summa-tx/bitcoin-spv-sol/contracts/BTCUtils.sol", "id": 1761, "nodeType": "ImportDirective", "scope": 2331, "sourceUnit": 13217, "src": "25:74:4", "symbolAliases": [ { "foreign": 1760, "local": null } ], "unitAlias": "" }, { "absolutePath": "@summa-tx/bitcoin-spv-sol/contracts/BytesLib.sol", "file": "@summa-tx/bitcoin-spv-sol/contracts/BytesLib.sol", "id": 1763, "nodeType": "ImportDirective", "scope": 2331, "sourceUnit": 13433, "src": "100:74:4", "symbolAliases": [ { "foreign": 1762, "local": null } ], "unitAlias": "" }, { "absolutePath": "@keep-network/keep-ecdsa/contracts/api/IBondedECDSAKeep.sol", 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"symbolAliases": [ { "foreign": 1776, "local": null } ], "unitAlias": "" }, { "absolutePath": "/home/runner/work/tbtc/tbtc/solidity/contracts/interfaces/ITBTCSystem.sol", "file": "../interfaces/ITBTCSystem.sol", "id": 1779, "nodeType": "ImportDirective", "scope": 2331, "sourceUnit": 5512, "src": "632:58:4", "symbolAliases": [ { "foreign": 1778, "local": null } ], "unitAlias": "" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": null, "fullyImplemented": true, "id": 2330, "linearizedBaseContracts": [ 2330 ], "name": "DepositLiquidation", "nodeType": "ContractDefinition", "nodes": [ { "id": 1782, "libraryName": { "contractScope": null, "id": 1780, "name": "BTCUtils", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 13216, "src": "731:8:4", "typeDescriptions": { "typeIdentifier": "t_contract$_BTCUtils_$13216", "typeString": "library BTCUtils" } }, "nodeType": "UsingForDirective", "src": "725:25:4", "typeName": { "id": 1781, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "744:5:4", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } } }, { "id": 1785, "libraryName": { "contractScope": null, "id": 1783, "name": "BytesLib", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 13432, "src": "761:8:4", "typeDescriptions": { "typeIdentifier": "t_contract$_BytesLib_$13432", "typeString": "library BytesLib" } }, "nodeType": "UsingForDirective", "src": "755:25:4", "typeName": { "id": 1784, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "774:5:4", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } } }, { "id": 1788, "libraryName": { "contractScope": null, "id": 1786, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 16855, "src": "791:8:4", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$16855", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "785:27:4", "typeName": { "id": 1787, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "804:7:4", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "id": 1791, "libraryName": { "contractScope": null, "id": 1789, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 16855, "src": "823:8:4", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$16855", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "817:26:4", "typeName": { "id": 1790, "name": "uint64", "nodeType": "ElementaryTypeName", "src": "836:6:4", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } } }, { "id": 1794, "libraryName": { "contractScope": null, "id": 1792, "name": "DepositUtils", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5103, "src": "855:12:4", "typeDescriptions": { "typeIdentifier": "t_contract$_DepositUtils_$5103", "typeString": "library DepositUtils" } }, 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1800, "libraryName": { "contractScope": null, "id": 1798, "name": "OutsourceDepositLogging", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5418, "src": "954:23:4", "typeDescriptions": { "typeIdentifier": "t_contract$_OutsourceDepositLogging_$5418", "typeString": "library OutsourceDepositLogging" } }, "nodeType": "UsingForDirective", "src": "948:55:4", "typeName": { "contractScope": null, "id": 1799, "name": "DepositUtils.Deposit", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3893, "src": "982:20:4", "typeDescriptions": { "typeIdentifier": "t_struct$_Deposit_$3893_storage_ptr", "typeString": "struct DepositUtils.Deposit" } } }, { "body": { "id": 1832, "nodeType": "Block", "src": "1694:148:4", "statements": [ { "assignments": [ 1816 ], "declarations": [ { "constant": false, "id": 1816, "name": "_keep", "nodeType": "VariableDeclaration", "scope": 1832, "src": "1704:22:4", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IBondedECDSAKeep_$11428", "typeString": "contract IBondedECDSAKeep" }, "typeName": { "contractScope": null, "id": 1815, "name": "IBondedECDSAKeep", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 11428, "src": "1704:16:4", "typeDescriptions": { "typeIdentifier": "t_contract$_IBondedECDSAKeep_$11428", "typeString": "contract IBondedECDSAKeep" } }, "value": null, "visibility": "internal" } ], "id": 1821, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1818, "name": "_d", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1802, "src": "1746:2:4", "typeDescriptions": { "typeIdentifier": "t_struct$_Deposit_$3893_storage_ptr", "typeString": "struct DepositUtils.Deposit storage pointer" } }, "id": 1819, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "keepAddress", "nodeType": "MemberAccess", 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"_v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1804, "src": "1798:2:4", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "argumentTypes": null, "id": 1826, "name": "_r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1806, "src": "1802:2:4", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1827, "name": "_s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1808, "src": "1806:2:4", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1828, "name": "_signedDigest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1810, "src": "1810:13:4", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 1829, "name": "_preimage", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1812, "src": "1825:9:4", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "argumentTypes": null, "id": 1822, "name": "_keep", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1816, "src": "1771:5:4", "typeDescriptions": { "typeIdentifier": "t_contract$_IBondedECDSAKeep_$11428", "typeString": "contract IBondedECDSAKeep" } }, "id": 1824, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "submitSignatureFraud", "nodeType": "MemberAccess", "referencedDeclaration": 11424, "src": "1771:26:4", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_uint8_$_t_bytes32_$_t_bytes32_$_t_bytes32_$_t_bytes_memory_ptr_$returns$_t_bool_$", "typeString": "function (uint8,bytes32,bytes32,bytes32,bytes memory) external returns (bool)" } }, "id": 1830, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1771:64:4", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1831, "nodeType": "ExpressionStatement", "src": "1771:64:4" } ] }, "documentation": "@notice Notifies the keep contract of fraud. Reverts if not fraud.\n @dev Calls out to the keep contract. this could get expensive if preimage\n is large.\n @param _d Deposit storage pointer.\n @param _v Signature recovery value.\n @param _r Signature R value.\n @param _s Signature S value.\n @param _signedDigest The digest signed by the signature vrs tuple.\n @param _preimage The sha256 preimage of the digest.", "id": 1833, "implemented": true, "kind": "function", "modifiers": [], "name": "submitSignatureFraud", "nodeType": "FunctionDefinition", "parameters": { "id": 1813, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1802, "name": "_d", "nodeType": "VariableDeclaration", "scope": 1833, "src": "1528:31:4", "stateVariable": false, "storageLocation": "storage", "typeDescriptions": { "typeIdentifier": "t_struct$_Deposit_$3893_storage_ptr", "typeString": "struct DepositUtils.Deposit" }, "typeName": { "contractScope": null, "id": 1801, "name": "DepositUtils.Deposit", "nodeType": "UserDefinedTypeName", 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"notifyUndercollateralizedLiquidation(DepositUtils.Deposit storage)": { "details": "Calls out to the system for oracle info.", "params": { "_d": "Deposit storage pointer." } }, "provideECDSAFraudProof(DepositUtils.Deposit storage,uint8,bytes32,bytes32,bytes32,bytes)": { "details": "Calls out to the keep to verify if there was fraud.", "params": { "_d": "Deposit storage pointer.", "_preimage": "The sha256 preimage of the digest.", "_r": "Signature R value.", "_s": "Signature S value.", "_signedDigest": "The digest signed by the signature vrs tuple.", "_v": "Signature recovery value." } }, "purchaseSignerBondsAtAuction(DepositUtils.Deposit storage)": { "details": "For interface, reading auctionValue will give a past value. the current is better.", "params": { "_d": "Deposit storage pointer." } }, "submitSignatureFraud(DepositUtils.Deposit storage,uint8,bytes32,bytes32,bytes32,bytes)": { "details": "Calls out to the keep contract. this could get expensive if preimage is large.", "params": { "_d": "Deposit storage pointer.", "_preimage": "The sha256 preimage of the digest.", "_r": "Signature R value.", "_s": "Signature S value.", "_signedDigest": "The digest signed by the signature vrs tuple.", "_v": "Signature recovery value." } } } }, "userdoc": { "methods": { "collateralizationPercentage(DepositUtils.Deposit storage)": { "notice": "Determines the collateralization percentage of the signing group." }, "exitCourtesyCall(DepositUtils.Deposit storage)": { "notice": "Goes from courtesy call to active." }, "notifyCourtesyCall(DepositUtils.Deposit storage)": { "notice": "Notify the contract that the signers are undercollateralized." }, "notifyCourtesyCallExpired(DepositUtils.Deposit storage)": { "notice": "Notifies the contract that the courtesy period has elapsed." }, "notifyUndercollateralizedLiquidation(DepositUtils.Deposit storage)": { "notice": "Notify the contract that the signers are undercollateralized." }, "provideECDSAFraudProof(DepositUtils.Deposit 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Payout to buyer, funder, then signers if not fraud." }, "submitSignatureFraud(DepositUtils.Deposit storage,uint8,bytes32,bytes32,bytes32,bytes)": { "notice": "Notifies the keep contract of fraud. Reverts if not fraud." } } } }