kleros-interaction-2

{ "contractName": "VersioningProxy", "abi": [ { "constant": true, "inputs": [ { "name": "", "type": "uint256" } ], "name": "tags", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "stable", "outputs": [ { "name": "tag", "type": "bytes32" }, { "name": "_address", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "implementation", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "", "type": "bytes32" } ], "name": "addresses", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "owner", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "inputs": [ { "name": "_firstTag", "type": "bytes32" }, { "name": "_firstAddress", "type": "address" } ], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "_prevTag", "type": "bytes32" }, { "indexed": false, "name": "_prevAddress", "type": "address" }, { "indexed": false, "name": "_nextTag", "type": "bytes32" }, { "indexed": false, "name": "_nextAddress", "type": "address" } ], "name": "OnStableChange", "type": "event" }, { "constant": false, "inputs": [], "name": "rollback", "outputs": [ { "name": "_success", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "allTags", "outputs": [ { "name": "_tags", "type": "bytes32[]" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_nextTag", "type": "bytes32" }, { "name": "_nextAddress", "type": "address" } ], "name": "publish", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_nextTag", "type": "bytes32" } ], "name": "setStable", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "bytecode": 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"source": "pragma solidity ^0.4.15;\n\n/**\n * @title VersioningProxy\n * @author Enrique Piqueras - <epiquerass@gmail.com>\n * @notice A base contract for managing the deployment of versions of another contract, the managed contract.\n */\ncontract VersioningProxy {\n /* Structs */\n\n struct Deployment {\n bytes32 tag;\n address _address;\n }\n\n /* Events */\n\n /**\n * @notice Called whenever 'stable' changes for off-chain handling.\n * @param _prevTag The previous 'stable' managed contract version tag.\n * @param _prevAddress The previous 'stable' managed contract address.\n * @param _nextTag The next 'stable' managed contract version tag.\n * @param _nextAddress The next 'stable' managed contract address.\n */\n event OnStableChange(bytes32 _prevTag, address _prevAddress, bytes32 _nextTag, address _nextAddress);\n\n /* Storage */\n\n // Owner and Creation Metadata\n address public owner = msg.sender;\n\n // Deployments\n address public implementation; // Proxy standard target address\n bytes32[] public tags; // We keep this so we can iterate over versions\n mapping (bytes32 => address) public addresses;\n Deployment public stable;\n\n /* Modifiers */\n\n /**\n * @dev Makes a function only callable by the owner of this contract.\n */\n modifier onlyOwner {\n require(owner == msg.sender, \"Can only be called by the owner.\");\n _;\n }\n\n /* Constructor */\n\n /**\n * @notice Constructs the versioning proxy with the proxy eternal storage flag and the first version of the managed contract, `firstTag`, at `firstAddress`.\n * @param _firstTag The version tag of the first version of the managed contract.\n * @param _firstAddress The address of the first verion of the managed contract.\n */\n constructor(bytes32 _firstTag, address _firstAddress) public {\n implementation = _firstAddress;\n publish(_firstTag, _firstAddress);\n }\n\n /* External */\n\n /**\n * @notice Rolls back 'stable' to the previous deployment, and returns true, if one exists, returns false otherwise.\n * @return True if there was a previous version and the rollback succeeded, false otherwise.\n */\n function rollback() external onlyOwner returns(bool _success) {\n uint256 tagsLen = tags.length;\n if (tagsLen < 2) // We don't have a previous deployment, return false\n return false;\n\n // Roll back and return true\n bytes32 prevTag = tags[tagsLen - 2];\n setStable(prevTag);\n return true;\n }\n\n /* External Views */\n\n /**\n * @notice Returns all deployed version tags.\n * @return All of the deployed version tags.\n */\n function allTags() external view returns(bytes32[] _tags) {\n return tags;\n }\n\n /* Public */\n\n /**\n * @notice Publishes the next version of the managed contract, `nextTag`, at `nextAddress`.\n * @param _nextTag The next version tag.\n * @param _nextAddress The next address of the managed contract.\n */\n function publish(bytes32 _nextTag, address _nextAddress) public onlyOwner {\n // Publish\n tags.push(_nextTag); // Push next tag\n addresses[_nextTag] = _nextAddress; // Set next address\n\n // Set 'stable'\n setStable(_nextTag);\n }\n\n /**\n * @notice Sets the value of 'stable' to the address of `nextTag`.\n * @param _nextTag The already published version tag.\n */\n function setStable(bytes32 _nextTag) public onlyOwner {\n // Make sure this version has already been published\n address nextAddress = addresses[_nextTag];\n require(nextAddress != address(0), \"The next address cannot be the zero address.\");\n\n // Save current tag and address for handlers\n bytes32 prevTag = stable.tag;\n address prevAddress = stable._address;\n\n // Set 'stable'\n stable = Deployment({tag: _nextTag, _address: nextAddress});\n\n // Call handler and fire event\n handleStableChange(prevTag, prevAddress, _nextTag, nextAddress); // on-chain\n emit OnStableChange(prevTag, prevAddress, _nextTag, nextAddress); // off-chain\n\n // Change proxy target\n implementation = nextAddress;\n }\n\n /* Private */\n\n /**\n * @notice Called whenever 'stable' changes for on-chain handling.\n * @dev Overwrite this function to handle 'stable' changes on-chain.\n * @param _prevTag The previous 'stable' managed contract version tag.\n * @param _prevAddress The previous 'stable' managed contract address.\n * @param _nextTag The next 'stable' managed contract version tag.\n * @param _nextAddress The next 'stable' managed contract address.\n */\n function handleStableChange(bytes32 _prevTag, address _prevAddress, bytes32 _nextTag, address _nextAddress) private {}\n}\n", "sourcePath": "/private/tmp/kleros-interaction/contracts/standard/proxy/VersioningProxy.sol", "ast": { "absolutePath": "/private/tmp/kleros-interaction/contracts/standard/proxy/VersioningProxy.sol", "exportedSymbols": { "VersioningProxy": [ 18193 ] }, "id": 18194, "nodeType": "SourceUnit", "nodes": [ { "id": 17995, "literals": [ "solidity", "^", "0.4", ".15" ], "nodeType": "PragmaDirective", "src": "0:24:51" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "contract", "documentation": " @title VersioningProxy\n @author Enrique Piqueras - <epiquerass@gmail.com>\n @notice A base contract for managing the deployment of versions of another contract, the managed contract.", "fullyImplemented": true, "id": 18193, "linearizedBaseContracts": [ 18193 ], "name": "VersioningProxy", "nodeType": "ContractDefinition", "nodes": [ { "canonicalName": "VersioningProxy.Deployment", "id": 18000, "members": [ { "constant": false, "id": 17997, "name": "tag", "nodeType": "VariableDeclaration", "scope": 18000, "src": "304:11:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 17996, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "304:7:51", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 17999, "name": "_address", "nodeType": "VariableDeclaration", "scope": 18000, "src": "325:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 17998, "name": "address", "nodeType": "ElementaryTypeName", "src": "325:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "name": "Deployment", "nodeType": "StructDefinition", "scope": 18193, "src": "276:72:51", "visibility": "public" }, { "anonymous": false, "documentation": "@notice Called whenever 'stable' changes for off-chain handling.\n@param _prevTag The previous 'stable' managed contract version tag.\n@param _prevAddress The previous 'stable' managed contract address.\n@param _nextTag The next 'stable' managed contract version tag.\n@param _nextAddress The next 'stable' managed contract address.", "id": 18010, "name": "OnStableChange", "nodeType": "EventDefinition", "parameters": { "id": 18009, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 18002, "indexed": false, "name": "_prevTag", "nodeType": "VariableDeclaration", "scope": 18010, "src": "773:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 18001, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "773:7:51", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 18004, "indexed": false, "name": "_prevAddress", "nodeType": "VariableDeclaration", "scope": 18010, "src": "791:20:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 18003, "name": "address", "nodeType": "ElementaryTypeName", "src": "791:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 18006, "indexed": false, "name": "_nextTag", "nodeType": "VariableDeclaration", "scope": 18010, "src": "813:16:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 18005, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "813:7:51", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 18008, "indexed": false, "name": "_nextAddress", "nodeType": "VariableDeclaration", "scope": 18010, "src": "831:20:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 18007, "name": "address", "nodeType": "ElementaryTypeName", "src": "831:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "772:80:51" }, "src": "752:101:51" }, { "constant": false, "id": 18014, "name": "owner", "nodeType": "VariableDeclaration", "scope": 18193, "src": "913:33:51", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 18011, "name": "address", "nodeType": "ElementaryTypeName", "src": "913:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 18012, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20639, "src": "936:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 18013, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "936:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "public" }, { "constant": false, "id": 18016, "name": "implementation", "nodeType": "VariableDeclaration", "scope": 18193, "src": "972:29:51", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 18015, "name": "address", "nodeType": "ElementaryTypeName", "src": "972:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "public" }, { "constant": false, "id": 18019, "name": "tags", "nodeType": "VariableDeclaration", "scope": 18193, "src": "1040:21:51", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_array$_t_bytes32_$dyn_storage", "typeString": "bytes32[]" }, "typeName": { "baseType": { "id": 18017, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1040:7:51", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 18018, "length": null, "nodeType": "ArrayTypeName", "src": "1040:9:51", "typeDescriptions": { "typeIdentifier": "t_array$_t_bytes32_$dyn_storage_ptr", "typeString": "bytes32[]" } }, "value": null, "visibility": "public" }, { "constant": false, "id": 18023, "name": "addresses", "nodeType": "VariableDeclaration", "scope": 18193, "src": "1115:45:51", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_address_$", "typeString": "mapping(bytes32 => address)" }, "typeName": { "id": 18022, "keyType": { "id": 18020, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1124:7:51", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Mapping", "src": "1115:28:51", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_address_$", "typeString": "mapping(bytes32 => address)" }, "valueType": { "id": 18021, "name": "address", "nodeType": "ElementaryTypeName", "src": "1135:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, "value": null, "visibility": "public" }, { "constant": false, "id": 18025, "name": "stable", "nodeType": "VariableDeclaration", "scope": 18193, "src": "1166:24:51", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_struct$_Deployment_$18000_storage", "typeString": "struct VersioningProxy.Deployment" }, "typeName": { "contractScope": null, "id": 18024, "name": "Deployment", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 18000, "src": "1166:10:51", "typeDescriptions": { "typeIdentifier": "t_struct$_Deployment_$18000_storage_ptr", "typeString": "struct VersioningProxy.Deployment" } }, "value": null, "visibility": "public" }, { "body": { "id": 18036, "nodeType": "Block", "src": "1328:92:51", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 18031, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 18028, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 18014, "src": "1346:5:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 18029, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20639, "src": "1355:3:51", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 18030, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1355:10:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "1346:19:51", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "argumentTypes": null, "hexValue": "43616e206f6e6c792062652063616c6c656420627920746865206f776e65722e", "id": 18032, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1367:34:51", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_bf33d29683e5562cfb7e5d7016dc68533d604c99c45e8c622ac0ad8361611bfa", "typeString": "literal_string \"Can only be called by the owner.\"" }, "value": "Can only be called by the owner." } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_bf33d29683e5562cfb7e5d7016dc68533d604c99c45e8c622ac0ad8361611bfa", "typeString": "literal_string \"Can only be called by the owner.\"" } ], "id": 18027, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 20642, 20643 ], "referencedDeclaration": 20643, "src": "1338:7:51", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 18033, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1338:64:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 18034, "nodeType": "ExpressionStatement", "src": "1338:64:51" }, { "id": 18035, "nodeType": "PlaceholderStatement", "src": "1412:1:51" } ] }, "documentation": " @dev Makes a function only callable by the owner of this contract.", "id": 18037, "name": "onlyOwner", "nodeType": "ModifierDefinition", "parameters": { "id": 18026, "nodeType": "ParameterList", "parameters": [], "src": "1328:0:51" }, "src": "1309:111:51", "visibility": "internal" }, { "body": { "id": 18053, "nodeType": "Block", "src": "1861:90:51", "statements": [ { "expression": { "argumentTypes": null, "id": 18046, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 18044, "name": "implementation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 18016, "src": "1871:14:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 18045, "name": "_firstAddress", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 18041, "src": "1888:13:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "1871:30:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 18047, "nodeType": "ExpressionStatement", "src": "1871:30:51" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 18049, "name": "_firstTag", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 18039, "src": "1919:9:51", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 18050, "name": "_firstAddress", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 18041, "src": "1930:13:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 18048, "name": "publish", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 18122, "src": "1911:7:51", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$_t_address_$returns$__$", "typeString": "function (bytes32,address)" } }, "id": 18051, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1911:33:51", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 18052, "nodeType": "ExpressionStatement", "src": "1911:33:51" } ] }, "documentation": " @notice Constructs the versioning proxy with the proxy eternal storage flag and the first version of the managed contract, `firstTag`, at `firstAddress`.\n @param _firstTag The version tag of the first version of the managed contract.\n @param _firstAddress The address of the first verion of the managed contract.", "id": 18054, "implemented": true, "isConstructor": true, "isDeclaredConst": false, "modifiers": [], "name": "", "nodeType": "FunctionDefinition", "parameters": { "id": 18042, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 18039, "name": "_firstTag", "nodeType": "VariableDeclaration", "scope": 18054, "src": "1812:17:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 18038, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1812:7:51", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 18041, "name": "_firstAddress", "nodeType": "VariableDeclaration", "scope": 18054, "src": "1831:21:51", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 18040, "name": "address", "nodeType": "ElementaryTypeName", "src": "1831:7:51", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1811:42:51" }, "payable": false, "returnParameters": { "id": 18043, "nodeType": "ParameterList", "parameters": [], "src": "1861:0:51" }, "scope": 18193, "src": "1800:151:51", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "i