{ "contractName": "Transaction", "abi": [ { "constant": true, "inputs": [ { "name": "", "type": "uint256" } ], "name": "transactions", "outputs": [ { "name": "id", "type": "uint256" }, { "name": "seller", "type": "address" }, { "name": "buyer", "type": "address" }, { "name": "itemId", "type": "bytes16" }, { "name": "typeItem", "type": "bytes8" }, { "name": "location", "type": "string" }, { "name": "pictureHash", "type": "string" }, { "name": "receiptHash", "type": "bytes16" }, { "name": "comment", "type": "string" }, { "name": "status", "type": "bytes8" }, { "name": "_price", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "", "type": "bytes16" } ], "name": "fundsLocked", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_id", "type": "uint256" }, { "indexed": true, "name": "_itemId", "type": "bytes16" }, { "indexed": false, "name": "_seller", "type": "address" }, { "indexed": false, "name": "_buyer", "type": "address" }, { "indexed": false, "name": "_price", "type": "uint256" } ], "name": "BuyItem", "type": "event" }, { "constant": false, "inputs": [], "name": "kill", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "getNumberOfTransactions", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "getSales", "outputs": [ { "name": "", "type": "uint256[]" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "getPurchases", "outputs": [ { "name": "", "type": "uint256[]" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_seller", "type": "address" }, { "name": "_itemId", "type": "bytes16" }, { "name": "_typeItem", "type": "bytes8" }, { "name": "_location", "type": "string" }, { "name": "_pictureHash", "type": "string" }, { "name": "_comment", "type": "string" }, { "name": "_status", "type": "bytes8" }, { "name": "_price", "type": "uint256" } ], "name": "buyItem", "outputs": [], "payable": true, "stateMutability": "payable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_seller", "type": "address" }, { "name": "_itemId", "type": "bytes16" }, { "name": "_price", "type": "uint256" } ], "name": "sendAdditionalFunds", "outputs": [], "payable": true, "stateMutability": "payable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_itemId", "type": "bytes16" } ], "name": "unlockFunds", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "seller", "type": "address" } ], "name": "sendAmount", "outputs": [], "payable": true, "stateMutability": "payable", "type": "function" }, { "constant": false, "inputs": [ { "name": "source", "type": "string" } ], "name": "stringToBytes8", "outputs": [ { "name": "result", "type": "bytes8" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "bytecode": 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"source": "pragma solidity ^0.4.23;\r\n\r\nlibrary SafeMath {\r\n function mul(uint256 a, uint256 b) internal constant returns (uint256) {\r\n uint256 c = a * b;\r\n assert(a == 0 || c / a == b);\r\n return c;\r\n }\r\n\r\n function div(uint256 a, uint256 b) internal constant returns (uint256) {\r\n // assert(b > 0); // Solidity automatically throws when dividing by 0\r\n uint256 c = a / b;\r\n // assert(a == b * c + a % b); // There is no case in which this doesn't hold\r\n return c;\r\n }\r\n\r\n function sub(uint256 a, uint256 b) internal constant returns (uint256) {\r\n assert(b <= a);\r\n return a - b;\r\n }\r\n\r\n function add(uint256 a, uint256 b) internal constant returns (uint256) {\r\n uint256 c = a + b;\r\n assert(c >= a);\r\n return c;\r\n }\r\n}\r\n\r\ncontract Ownable {\r\n // state variables\r\n address owner;\r\n\r\n // modifiers\r\n modifier onlyOwner() {\r\n require(msg.sender == owner);\r\n _;\r\n }\r\n\r\n // constructor\r\n function Ownable() public {\r\n owner = msg.sender;\r\n }\r\n\r\n /**\r\n * @dev Allows the current owner to transfer control of the contract to a newOwner.\r\n * @param newOwner The address to transfer ownership to.\r\n */\r\n function transferOwnership(address newOwner) onlyOwner {\r\n owner = newOwner;\r\n }\r\n\r\n}\r\n\r\ncontract Transaction is Ownable {\r\n // custom types\r\n struct TransactionNeoPlace {\r\n uint id;\r\n address seller;\r\n address buyer;\r\n bytes16 itemId;\r\n bytes8 typeItem;\r\n string location;\r\n string pictureHash;\r\n bytes16 receiptHash;\r\n string comment;\r\n bytes8 status;\r\n uint256 _price;\r\n }\r\n\r\n // state variables\r\n mapping(uint => TransactionNeoPlace) public transactions;\r\n mapping(bytes16 => uint256) public fundsLocked;\r\n\r\n uint transactionCounter;\r\n\r\n // events\r\n event BuyItem(\r\n uint indexed _id,\r\n bytes16 indexed _itemId,\r\n address _seller,\r\n address _buyer,\r\n uint256 _price\r\n );\r\n\r\n function kill() public onlyOwner {\r\n selfdestruct(owner);\r\n }\r\n\r\n // fetch the number of transactions in the contract\r\n function getNumberOfTransactions() public view returns (uint) {\r\n return transactionCounter;\r\n }\r\n\r\n // fetch and return all sales of the seller\r\n function getSales() public view returns (uint[]) {\r\n // prepare output array\r\n uint[] memory transactionIds = new uint[](transactionCounter);\r\n\r\n uint numberOfSales = 0;\r\n\r\n // iterate over transactions\r\n for(uint i = 1; i <= transactionCounter; i++) {\r\n // keep the ID if the transaction owns to the seller\r\n if(transactions[i].seller == msg.sender) {\r\n transactionIds[numberOfSales] = transactions[i].id;\r\n numberOfSales++;\r\n }\r\n }\r\n\r\n // copy the transactionIds array into a smaller getSales array\r\n uint[] memory sales = new uint[](numberOfSales);\r\n for(uint j = 0; j < numberOfSales; j++) {\r\n sales[j] = transactionIds[j];\r\n }\r\n return sales;\r\n }\r\n\r\n // fetch and return all purchases of the buyer\r\n function getPurchases() public view returns (uint[]) {\r\n // prepare output array\r\n uint[] memory transactionIds = new uint[](transactionCounter);\r\n\r\n uint numberOfBuy = 0;\r\n\r\n // iterate over transactions\r\n for(uint i = 1; i <= transactionCounter; i++) {\r\n // keep the ID if the transaction owns to the seller\r\n if(transactions[i].buyer == msg.sender) {\r\n transactionIds[numberOfBuy] = transactions[i].id;\r\n numberOfBuy++;\r\n }\r\n }\r\n\r\n // copy the transactionIds array into a smaller getBuy array\r\n uint[] memory buy = new uint[](numberOfBuy);\r\n for(uint j = 0; j < numberOfBuy; j++) {\r\n buy[j] = transactionIds[j];\r\n }\r\n return buy;\r\n }\r\n\r\n // new transaction / buy item\r\n function buyItem(address _seller, bytes16 _itemId, bytes8 _typeItem, string _location, string _pictureHash, string _comment, bytes8 _status, uint256 _price) payable public {\r\n // address not null\r\n require(_seller != 0x0);\r\n // seller don't allow to buy his own item\r\n require(msg.sender != _seller);\r\n\r\n require(_itemId.length > 0);\r\n require(_typeItem.length > 0);\r\n require(bytes(_location).length > 0);\r\n require(bytes(_pictureHash).length > 0);\r\n //require(bytes(_comment).length > 0);\r\n\r\n require(msg.value == _price);\r\n\r\n\r\n // lock and put the funds in escrow\r\n //_seller.transfer(msg.value);\r\n fundsLocked[_itemId]=fundsLocked[_itemId] + _price;\r\n\r\n // new transaction\r\n transactionCounter++;\r\n\r\n // store the new transaction\r\n transactions[transactionCounter] = TransactionNeoPlace(\r\n transactionCounter,\r\n _seller,\r\n msg.sender,\r\n _itemId,\r\n _typeItem,\r\n _location,\r\n _pictureHash,\r\n \"\",\r\n _comment,\r\n _status,\r\n _price\r\n );\r\n\r\n // trigger the new transaction\r\n BuyItem(transactionCounter, _itemId, _seller, msg.sender, _price);\r\n }\r\n\r\n // send additional funds\r\n //TODO merge with unlockFunds\r\n function sendAdditionalFunds(address _seller, bytes16 _itemId, uint256 _price) payable public {\r\n // address not null\r\n require(_seller != 0x0);\r\n // seller don't allow to buy his own item\r\n require(msg.sender != _seller);\r\n\r\n require(_itemId.length > 0);\r\n\r\n require(msg.value == _price);\r\n\r\n for(uint i = 0; i <= transactionCounter; i++) {\r\n if(transactions[i].itemId == _itemId) {\r\n\r\n require(msg.sender == transactions[i].buyer);\r\n require(stringToBytes8(\"paid\") == transactions[i].status);\r\n address seller = transactions[i].seller;\r\n transactions[i]._price = transactions[i]._price + msg.value;\r\n\r\n //transfer fund from client to vendor\r\n seller.transfer(msg.value);\r\n\r\n break;\r\n }\r\n }\r\n }\r\n\r\n function unlockFunds(bytes16 _itemId) public {\r\n\r\n for(uint i = 0; i <= transactionCounter; i++) {\r\n if(transactions[i].itemId == _itemId) {\r\n\r\n require(msg.sender == transactions[i].buyer);\r\n require(stringToBytes8(\"paid\") != transactions[i].status);\r\n address buyer = transactions[i].buyer;\r\n address seller = transactions[i].seller;\r\n uint256 priceTransaction = transactions[i]._price;\r\n\r\n require(fundsLocked[_itemId]>0);\r\n fundsLocked[_itemId]=fundsLocked[_itemId] - (priceTransaction);\r\n\r\n //transfer fund from client to vendor\r\n seller.transfer(priceTransaction);\r\n\r\n transactions[i].status = stringToBytes8('paid');\r\n\r\n break;\r\n }\r\n }\r\n }\r\n\r\n function sendAmount(address seller) payable public {\r\n // address not null\r\n require(seller != 0x0);\r\n // seller don't allow to buy his own item\r\n require(msg.sender != seller);\r\n\r\n seller.transfer(msg.value);\r\n }\r\n\r\n function stringToBytes8(string memory source) returns (bytes8 result) {\r\n bytes memory tempEmptyStringTest = bytes(source);\r\n if (tempEmptyStringTest.length == 0) {\r\n return 0x0;\r\n }\r\n\r\n assembly {\r\n result := mload(add(source, 8))\r\n }\r\n }\r\n\r\n}\r\n", "sourcePath": "D:\\web\\frontend\\contracts\\Transaction.sol", "ast": { "absolutePath": "/D/web/frontend/contracts/Transaction.sol", "exportedSymbols": { "Ownable": [ 211 ], "SafeMath": [ 176 ], "Transaction": [ 820 ] }, "id": 821, "nodeType": "SourceUnit", "nodes": [ { "id": 83, "literals": [ "solidity", "^", "0.4", ".23" ], "nodeType": "PragmaDirective", "src": "0:24:2" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": null, "fullyImplemented": true, "id": 176, "linearizedBaseContracts": [ 176 ], "name": "SafeMath", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 112, "nodeType": "Block", "src": "121:80:2", "statements": [ { "assignments": [ 93 ], "declarations": [ { "constant": false, "id": 93, "name": "c", "nodeType": "VariableDeclaration", "scope": 113, "src": "128:9:2", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 92, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "128:7:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 97, "initialValue": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 96, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 94, "name": "a", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 85, "src": "140:1:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "argumentTypes": null, "id": 95, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 87, "src": "144:1:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "140:5:2", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, 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