{ "contractName": "IHashRegistrarSimplified", "abi": [ { "constant": true, "inputs": [ { "name": "_hash", "type": "bytes32" } ], "name": "entries", "outputs": [ { "name": "", "type": "uint8" }, { "name": "", "type": "address" }, { "name": "", "type": "uint256" }, { "name": "", "type": "uint256" }, { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_hash", "type": "bytes32" }, { "name": "_newOwner", "type": "address" } ], "name": "transfer", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "bytecode": "0x", "deployedBytecode": "0x", "sourceMap": "", "deployedSourceMap": "", "source": "pragma solidity 0.4.24;\n\n\ncontract IENS {\n function owner(bytes32 _node) public view returns (address);\n function setOwner(bytes32 _node, address _owner) public;\n}\n\n\ncontract IDeed {\n address public owner;\n address public previousOwner;\n}\n\n\ncontract IHashRegistrarSimplified {\n enum Mode { Open, Auction, Owned, Forbidden, Reveal, NotYetAvailable }\n\n function entries(bytes32 _hash) public view returns (Mode, address, uint, uint, uint);\n function transfer(bytes32 _hash, address _newOwner) public;\n}\n\n\n/**\n * @dev DeedHolder provides a way for owners of ENS deeds to restrict their\n * ability to make changes to a name they own. Once ownership of a deed is\n * transferred to DeedHolder, the original owner may not do anything with\n * the deed other than transfer ownership to another account until the\n * registrar is upgraded, at which point they may claim back ownership of\n * the deed. The transfer function allows owners to precommit to an upgrade\n * path before the new registrar is deployed.\n * Designed to be used with the initially deployed ENS and\n * HashRegistrarSimplified contracts.\n *\n * Adapted from Nick Johnson's DeedHolder:\n * https://gist.github.com/Arachnid/3acaf6ed437ee79e8e894b2ce5e82441\n */\ncontract DeedHolder {\n IHashRegistrarSimplified public registrar;\n bytes32 public registrarNode;\n\n IENS internal ens;\n mapping(bytes32=>address) private owners;\n\n event TransferDeed(bytes32 indexed node, address indexed newOwner);\n\n modifier onlyDeedOwner(bytes32 _node) {\n require(owner(_node) == msg.sender);\n _;\n }\n\n modifier newRegistrar() {\n require(ens.owner(registrarNode) != address(registrar));\n _;\n }\n\n constructor(address _ens, bytes32 _registrarNode) public {\n ens = IENS(_ens);\n registrarNode = _registrarNode;\n registrar = IHashRegistrarSimplified(ens.owner(registrarNode));\n }\n\n /**\n * @dev Claims back the deed after a registrar upgrade.\n * @param _node The node hash of the deed to transfer.\n */\n function claim(bytes32 _node) public onlyDeedOwner(_node) newRegistrar {\n registrar.transfer(_node, msg.sender);\n }\n\n /**\n * @dev owner returns the address of the account that owns a deed. Initially\n * this is the owner of the deed according to the registry, or the\n * previousOwner if ownership has already been transferred to this\n * contract. Afterwards, the owner may transfer control to anther account.\n * @param _node The node hash of the deed to check.\n * @return The address owning the deed.\n */\n function owner(bytes32 _node) public view returns(address) {\n if (owners[_node] != 0) {\n return owners[_node];\n }\n var (, deedAddress, , ,) = registrar.entries(_node);\n\n var deed = IDeed(deedAddress);\n var deedOwner = deed.owner();\n if (deedOwner == address(this)) {\n return deed.previousOwner();\n }\n return deedOwner;\n }\n\n /**\n * @dev Transfers control of a deed to a new account.\n * @param _node The node hash of the deed to transfer.\n * @param _newOwner The address of the new owner.\n */\n function transfer(bytes32 _node, address _newOwner) public onlyDeedOwner(_node) {\n owners[_node] = _newOwner;\n emit TransferDeed(_node, _newOwner);\n }\n}\n", "sourcePath": "/Users/brett/Development/aragon/aragon-id/contracts/DeedHolder.sol", "ast": { "absolutePath": 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145, "src": "2848:5:0", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "argumentTypes": null, "id": 162, "name": "registrar", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 53, "src": "2830:9:0", "typeDescriptions": { "typeIdentifier": "t_contract$_IHashRegistrarSimplified_$51", "typeString": "contract IHashRegistrarSimplified" } }, "id": 163, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "entries", "nodeType": "MemberAccess", "referencedDeclaration": 43, "src": "2830:17:0", "typeDescriptions": { "typeIdentifier": "t_function_external_view$_t_bytes32_$returns$_t_enum$_Mode_$28_$_t_address_$_t_uint256_$_t_uint256_$_t_uint256_$", "typeString": "function (bytes32) view external returns (enum IHashRegistrarSimplified.Mode,address,uint256,uint256,uint256)" } }, "id": 165, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2830:24:0", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_enum$_Mode_$28_$_t_address_$_t_uint256_$_t_uint256_$_t_uint256_$", "typeString": "tuple(enum IHashRegistrarSimplified.Mode,address,uint256,uint256,uint256)" } }, "nodeType": "VariableDeclarationStatement", "src": "2803:51:0" }, { "assignments": [ 167 ], "declarations": [ { "constant": false, "id": 167, "name": "deed", "nodeType": "VariableDeclaration", "scope": 191, "src": "2865:8:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IDeed_$21", "typeString": "contract IDeed" }, "typeName": null, "value": null, "visibility": "internal" } ], "id": 171, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 169, "name": "deedAddress", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 161, "src": "2882:11:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 168, "name": "IDeed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 21, "src": "2876:5:0", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IDeed_$21_$", "typeString": "type(contract IDeed)" } }, "id": 170, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2876:18:0", "typeDescriptions": { "typeIdentifier": "t_contract$_IDeed_$21", "typeString": "contract IDeed" } }, "nodeType": "VariableDeclarationStatement", "src": "2865:29:0" }, { "assignments": [ 172 ], "declarations": [ { "constant": false, "id": 172, "name": "deedOwner", "nodeType": "VariableDeclaration", "scope": 191, "src": "2904:13:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": null, "value": null, "visibility": "internal" } ], "id": 176, "initialValue": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 173, "name": "deed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 167, "src": "2920:4:0", "typeDescriptions": { "typeIdentifier": "t_contract$_IDeed_$21", "typeString": "contract IDeed" } }, "id": 174, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "owner", "nodeType": "MemberAccess", "referencedDeclaration": 18, "src": "2920:10:0", "typeDescriptions": { "typeIdentifier": "t_function_external_view$__$returns$_t_address_$", "typeString": "function () view external returns (address)" } }, "id": 175, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2920:12:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "2904:28:0" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 181, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 177, "name": "deedOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 172, "src": "2946:9:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 179, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3441, "src": "2967:4:0", "typeDescriptions": { "typeIdentifier": "t_contract$_DeedHolder_$214", "typeString": "contract DeedHolder" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_DeedHolder_$214", "typeString": "contract DeedHolder" } ], "id": 178, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2959:7:0", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 180, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2959:13:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "2946:26:0", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 187, "nodeType": "IfStatement", "src": "2942:84:0", "trueBody": { "id": 186, "nodeType": "Block", "src": "2974:52:0", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 182, "name": "deed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 167, "src": "2995:4:0", "typeDescriptions": { "typeIdentifier": "t_contract$_IDeed_$21", "typeString": "contract IDeed" } }, "id": 183, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "previousOwner", "nodeType": "MemberAccess", "referencedDeclaration": 20, "src": "2995:18:0", "typeDescriptions": { "typeIdentifier": "t_function_external_view$__$returns$_t_address_$", "typeString": "function () view external returns (address)" } }, "id": 184, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2995:20:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 149, "id": 185, "nodeType": "Return", "src": "2988:27:0" } ] } }, { "expression": { "argumentTypes": null, "id": 188, "name": "deedOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 172, "src": "3042:9:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 149, "id": 189, "nodeType": "Return", "src": "3035:16:0" } ] }, "documentation": "@dev owner returns the address of the account that owns a deed. Initially\n this is the owner of the deed according to the registry, or the\n previousOwner if ownership has already been transferred to this\n contract. Afterwards, the owner may transfer control to anther account.\n@param _node The node hash of the deed to check.\n@return The address owning the deed.", "id": 191, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "owner", "nodeType": "FunctionDefinition", "parameters": { "id": 146, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 145, "name": "_node", "nodeType": "VariableDeclaration", "scope": 191, "src": "2671:13:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 144, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2671:7:0", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" } ], "src": "2670:15:0" }, "payable": false, "returnParameters": { "id": 149, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 148, "name": "", "nodeType": "VariableDeclaration", "scope": 191, "src": "2706:7:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 147, "name": "address", "nodeType": "ElementaryTypeName", "src": "2706:7:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "2705:9:0" }, "scope": 214, "src": "2656:402:0", "stateMutability": "view", "superFunction": null, "visibility": "public" }, { "body": { "id": 212, "nodeType": "Block", "src": "3331:87:0", "statements": [ { "expression": { "argumentTypes": null, "id": 205, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 201, "name": "owners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 61, "src": "3341:6:0", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_bytes32_$_t_address_$", "typeString": "mapping(bytes32 => address)" } }, "id": 203, "indexExpression": { "argumentTypes": null, "id": 202, "name": "_node", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 193, "src": "3348:5:0", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3341:13:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 204, "name": "_newOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 195, "src": "3357:9:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "3341:25:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 206, "nodeType": "ExpressionStatement", "src": "3341:25:0" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 208, "name": "_node", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 193, "src": "3394:5:0", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "id": 209, "name": "_newOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 195, "src": "3401:9:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 207, "name": "TransferDeed", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 67, "src": "3381:12:0", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_bytes32_$_t_address_$returns$__$", "typeString": "function (bytes32,address)" } }, "id": 210, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3381:30:0", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 211, "nodeType": "EmitStatement", "src": "3376:35:0" } ] }, "documentation": "@dev Transfers control of a deed to a new account.\n@param _node The node hash of the deed to transfer.\n@param _newOwner The address of the new owner.", "id": 213, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [ { "arguments": [ { "argumentTypes": null, "id": 198, "name": "_node", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 193, "src": "3324:5:0", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "id": 199, "modifierName": { "argumentTypes": null, "id": 197, "name": "onlyDeedOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 82, "src": "3310:13:0", "typeDescriptions": { "typeIdentifier": "t_modifier$_t_bytes32_$", "typeString": "modifier (bytes32)" } }, "nodeType": "ModifierInvocation", "src": "3310:20:0" } ], "name": "transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 196, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 193, "name": "_node", "nodeType": "VariableDeclaration", "scope": 213, "src": "3269:13:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 192, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "3269:7:0", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 195, "name": "_newOwner", "nodeType": "VariableDeclaration", "scope": 213, "src": "3284:17:0", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 194, "name": "address", "nodeType": "ElementaryTypeName", "src": "3284:7:0", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "3268:34:0" }, "payable": false, "returnParameters": { "id": 200, "nodeType": "ParameterList", "parameters": [], "src": "3331:0:0" }, "scope": 214, "src": "3251:167:0", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" } ], "scope": 215, "src": "1278:2142:0" } ], "src": "0:3421:0" }, "compiler": { "name": "solc", "version": "0.4.24+commit.e67f0147.Emscripten.clang" }, "networks": {}, "schemaVersion": "2.0.1", "updatedAt": "2020-01-30T18:28:02.808Z" }