{ "fileName": "Escrow.sol", "contractName": "Escrow", "source": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.7.0;\n\nimport \"../../math/SafeMath.sol\";\nimport \"../../access/Ownable.sol\";\nimport \"../../utils/Address.sol\";\n\n /**\n * @title Escrow\n * @dev Base escrow contract, holds funds designated for a payee until they\n * withdraw them.\n *\n * Intended usage: This contract (and derived escrow contracts) should be a\n * standalone contract, that only interacts with the contract that instantiated\n * it. That way, it is guaranteed that all Ether will be handled according to\n * the `Escrow` rules, and there is no need to check for payable functions or\n * transfers in the inheritance tree. The contract that uses the escrow as its\n * payment method should be its owner, and provide public methods redirecting\n * to the escrow's deposit and withdraw.\n */\ncontract Escrow is Ownable {\n using SafeMath for uint256;\n using Address for address payable;\n\n event Deposited(address indexed payee, uint256 weiAmount);\n event Withdrawn(address indexed payee, uint256 weiAmount);\n\n mapping(address => uint256) private _deposits;\n\n function depositsOf(address payee) public view returns (uint256) {\n return _deposits[payee];\n }\n\n /**\n * @dev Stores the sent amount as credit to be withdrawn.\n * @param payee The destination address of the funds.\n */\n function deposit(address payee) public virtual payable onlyOwner {\n uint256 amount = msg.value;\n _deposits[payee] = _deposits[payee].add(amount);\n\n emit Deposited(payee, amount);\n }\n\n /**\n * @dev Withdraw accumulated balance for a payee, forwarding all gas to the\n * recipient.\n *\n * WARNING: Forwarding all gas opens the door to reentrancy vulnerabilities.\n * Make sure you trust the recipient, or are either following the\n * checks-effects-interactions pattern or using {ReentrancyGuard}.\n *\n * @param payee The address whose funds will be withdrawn and transferred to.\n */\n function withdraw(address payable payee) public virtual onlyOwner {\n uint256 payment = _deposits[payee];\n\n _deposits[payee] = 0;\n\n payee.sendValue(payment);\n\n emit Withdrawn(payee, payment);\n }\n}\n", "sourcePath": "contracts/payment/escrow/Escrow.sol", "sourceMap": "807:1400:71:-:0;;;;;;;;;;;;;856:17:7;876:12;:10;;;:12;;:::i;:::-;856:32;;907:9;898:6;;:18;;;;;;;;;;;;;;;;;;964:9;931:43;;960:1;931:43;;;;;;;;;;;;831:150;807:1400:71;;590:104:0;643:15;677:10;670:17;;590:104;:::o;807:1400:71:-;;;;;;;", "deployedSourceMap": 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"abi": [ { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "payee", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "weiAmount", "type": "uint256" } ], "name": "Deposited", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "previousOwner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "payee", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "weiAmount", "type": "uint256" } ], "name": "Withdrawn", "type": "event" }, { "inputs": [ { "internalType": "address", "name": "payee", "type": "address" } ], "name": "deposit", "outputs": [], "stateMutability": "payable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "payee", "type": "address" } ], "name": "depositsOf", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "owner", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "renounceOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address payable", "name": "payee", "type": "address" } ], "name": "withdraw", "outputs": [], "stateMutability": "nonpayable", "type": "function" } ], "ast": { "absolutePath": "contracts/payment/escrow/Escrow.sol", "exportedSymbols": { "Escrow": [ 6653 ] }, "id": 6654, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 6550, "literals": [ "solidity", "^", "0.7", ".0" ], "nodeType": "PragmaDirective", "src": "33:23:71" }, { "absolutePath": "contracts/math/SafeMath.sol", "file": "../../math/SafeMath.sol", "id": 6551, "nodeType": "ImportDirective", "scope": 6654, "sourceUnit": 2422, "src": "58:33:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "contracts/access/Ownable.sol", "file": "../../access/Ownable.sol", "id": 6552, "nodeType": "ImportDirective", "scope": 6654, "sourceUnit": 1577, "src": "92:34:71", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "contracts/utils/Address.sol", "file": "../../utils/Address.sol", "id": 6553, "nodeType": "ImportDirective", "scope": 6654, "sourceUnit": 12812, "src": "127:33:71", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 6555, "name": "Ownable", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1576, "src": "826:7:71", "typeDescriptions": { "typeIdentifier": "t_contract$_Ownable_$1576", "typeString": "contract Ownable" } }, "id": 6556, "nodeType": "InheritanceSpecifier", "src": "826:7:71" } ], "contractDependencies": [ 22, 1576 ], "contractKind": "contract", "documentation": { "id": 6554, "nodeType": "StructuredDocumentation", "src": "163:643:71", "text": " @title Escrow\n @dev Base escrow contract, holds funds designated for a payee until they\n withdraw them.\n Intended usage: This contract (and derived escrow contracts) should be a\n standalone contract, that only interacts with the contract that instantiated\n it. That way, it is guaranteed that all Ether will be handled according to\n the `Escrow` rules, and there is no need to check for payable functions or\n transfers in the inheritance tree. The contract that uses the escrow as its\n payment method should be its owner, and provide public methods redirecting\n to the escrow's deposit and withdraw." }, "fullyImplemented": true, "id": 6653, "linearizedBaseContracts": [ 6653, 1576, 22 ], "name": "Escrow", "nodeType": "ContractDefinition", "nodes": [ { "id": 6559, "libraryName": { "contractScope": null, "id": 6557, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 2421, "src": "846:8:71", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$2421", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "840:27:71", "typeName": { "id": 6558, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "859:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "id": 6562, "libraryName": { "contractScope": null, "id": 6560, "name": "Address", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 12811, "src": "878:7:71", "typeDescriptions": { "typeIdentifier": "t_contract$_Address_$12811", "typeString": "library Address" } }, "nodeType": "UsingForDirective", "src": "872:34:71", "typeName": { "id": 6561, "name": "address", "nodeType": "ElementaryTypeName", "src": "890:15:71", "stateMutability": "payable", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } } }, { "anonymous": false, "documentation": null, "id": 6568, "name": "Deposited", "nodeType": "EventDefinition", "parameters": { "id": 6567, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6564, "indexed": true, "mutability": "mutable", "name": "payee", "nodeType": "VariableDeclaration", "overrides": null, "scope": 6568, "src": "928:21:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6563, "name": "address", "nodeType": "ElementaryTypeName", "src": "928:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6566, "indexed": false, "mutability": "mutable", "name": "weiAmount", "nodeType": "VariableDeclaration", "overrides": null, "scope": 6568, "src": "951:17:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6565, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "951:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "927:42:71" }, "src": "912:58:71" }, { "anonymous": false, "documentation": null, "id": 6574, "name": "Withdrawn", "nodeType": "EventDefinition", "parameters": { "id": 6573, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6570, "indexed": true, "mutability": "mutable", "name": "payee", "nodeType": "VariableDeclaration", "overrides": null, "scope": 6574, "src": "991:21:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6569, "name": "address", "nodeType": "ElementaryTypeName", "src": "991:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6572, "indexed": false, "mutability": "mutable", "name": "weiAmount", "nodeType": "VariableDeclaration", "overrides": null, "scope": 6574, "src": "1014:17:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6571, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1014:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "990:42:71" }, "src": "975:58:71" }, { "constant": false, "id": 6578, "mutability": "mutable", "name": "_deposits", "nodeType": "VariableDeclaration", "overrides": null, "scope": 6653, "src": "1039:45:71", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "typeName": { "id": 6577, "keyType": { "id": 6575, "name": "address", "nodeType": "ElementaryTypeName", "src": "1047:7:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "1039:27:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 6576, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1058:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "value": null, "visibility": "private" }, { "body": { "id": 6589, "nodeType": "Block", "src": "1156:40:71", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6585, "name": "_deposits", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6578, "src": "1173:9:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 6587, "indexExpression": { "argumentTypes": null, "id": 6586, "name": "payee", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6580, "src": "1183:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1173:16:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 6584, "id": 6588, "nodeType": "Return", "src": "1166:23:71" } ] }, "documentation": null, "functionSelector": "e3a9db1a", "id": 6590, "implemented": true, "kind": "function", "modifiers": [], "name": "depositsOf", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 6581, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6580, "mutability": "mutable", "name": "payee", "nodeType": "VariableDeclaration", "overrides": null, "scope": 6590, "src": "1111:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6579, "name": "address", "nodeType": "ElementaryTypeName", "src": "1111:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1110:15:71" }, "returnParameters": { "id": 6584, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6583, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 6590, "src": "1147:7:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6582, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1147:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1146:9:71" }, "scope": 6653, "src": "1091:105:71", "stateMutability": "view", "virtual": false, "visibility": "public" }, { "body": { "id": 6619, "nodeType": "Block", "src": "1403:140:71", "statements": [ { "assignments": [ 6599 ], "declarations": [ { "constant": false, "id": 6599, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "overrides": null, "scope": 6619, "src": "1413:14:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6598, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1413:7:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 6602, "initialValue": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 6600, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -15, "src": "1430:3:71", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 6601, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "value", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1430:9:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "1413:26:71" }, { "expression": { "argumentTypes": null, "id": 6612, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6603, "name": "_deposits", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6578, "src": "1449:9:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 6605, "indexExpression": { "argumentTypes": null, "id": 6604, "name": "payee", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6593, "src": "1459:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1449:16:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6610, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6599, "src": "1489:6:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6606, "name": "_deposits", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6578, "src": "1468:9:71", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 6608, "indexExpression": { "argumentTypes": null, "id": 6607, "name": "payee", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6593, "src": "1478:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1468:16:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6609, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 2254, "src": "1468:20:71", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 6611, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1468:28:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1449:47:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6613, "nodeType": "ExpressionStatement", "src": "1449:47:71" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6615, "name": "payee", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6593, "src": "1522:5:71", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 6616, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6599, "src": "1529:6:71", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6614, "name": "Deposited", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6568, "src": "1512:9:71", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 6617, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1512:24:71", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6618, "nodeType": "EmitStatement", "src": "1507:29:71" } ] }, "documentation": { "id": 6591, "nodeType": "StructuredDocumentation", "src": "1202:131:71", "text": " @dev Stores the sent amount as credit to be withdrawn.\n @param payee The destination address of the funds." }, "functionSelector": "f340fa01", "id": 6620, "implemented": true, "kind": "function", "modifiers": [ { "arguments": null, "id": 6596, "modifierName": { "argumentTypes": null, "id": 6595, "name": "onlyOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1525, "src": "1393:9:71", "typeDescriptions": { "typeIdentifier": "t_modifier$__$", "typeString": "modifier ()" } }, "nodeType": "ModifierInvocation", "src": "1393:9:71" } ], "name": "deposit", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 6594, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6593, "mutability": "mutable", "name": "payee", "nodeType": "VariableDeclaration", "overrides": null, "scope": 6620, "src": "1355:13:71", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6592, "name": "address", "nodeType": "ElementaryTypeName", "src": "1355:7:71", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1354:15:71" }, "returnParameters": { "id": 6597, "nodeType": "ParameterList", "parameters": [], "src": "1403:0:71" }, "scope": 6653, "src": 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