• 2018.08.21

oraclizeを初めて使った

• 
• Tweet

oraclizeを初めて使った

使用元のコントラクトにetherの残高が必要らしい。
ケチだな。

pragma solidity ^0.4.19; import "./usingOraclize.sol"; contract SimpleOraclizeContract is usingOraclize { struct NumberLog { bytes32 id; uint number; } NumberLog[] public numberLogs; event SetNewNumber(bytes32 id, uint number); event NewOraclizeQuery(string description, uint price); function __callback(bytes32 myid, string result) public { if (msg.sender != oraclize_cbAddress()) { revert(); } uint number = parseInt(result); numberLogs.push(NumberLog(myid, number)); emit SetNewNumber(myid, number); } function updateNumber() public payable { uint price = oraclize_getPrice("URL"); if(price > address(this).balance){ emit NewOraclizeQuery("NG", price); } else { oraclize_query("WolframAlpha", "random integer number between 0 and 99"); emit NewOraclizeQuery("OK", price); } } function getNumbers() public view returns(uint[]) { uint len = numberLogs.length; uint[] memory nums = new uint[](len); for(uint i=0; i<len; i++){ nums[i] = numberLogs[i].number; } return nums; } function getIds() public view returns(bytes32[]) { uint len = numberLogs.length; bytes32[] memory ids = new bytes32[](len); for(uint i=0; i<len; i++){ ids[i] = numberLogs[i].id; } return ids; } }

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

pragma solidity ^0.4.19;   import "./usingOraclize.sol";   contract SimpleOraclizeContract is usingOraclize {     struct NumberLog {         bytes32 id;         uint number;     }       NumberLog[] public numberLogs;     event SetNewNumber(bytes32 id, uint number);     event NewOraclizeQuery(string description, uint price);       function __callback(bytes32 myid, string result) public {         if (msg.sender != oraclize_cbAddress()) {             revert();         }           uint number = parseInt(result);         numberLogs.push(NumberLog(myid, number));           emit SetNewNumber(myid, number);     }       function updateNumber() public payable {         uint price = oraclize_getPrice("URL");           if(price > address(this).balance){             emit NewOraclizeQuery("NG", price);         } else {             oraclize_query("WolframAlpha", "random integer number between 0 and 99");               emit NewOraclizeQuery("OK", price);         }     }       function getNumbers() public view returns(uint[]) {         uint len = numberLogs.length;         uint[] memory nums = new uint[](len);         for(uint i=0; i<len; i++){             nums[i] = numberLogs[i].number;         }         return nums;     }       function getIds() public view returns(bytes32[]) {         uint len = numberLogs.length;         bytes32[] memory ids = new bytes32[](len);         for(uint i=0; i<len; i++){             ids[i] = numberLogs[i].id;         }         return ids;     }   }

// <ORACLIZE_API> /* Copyright (c) 2015-2016 Oraclize SRL Copyright (c) 2016 Oraclize LTD Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ pragma solidity ^0.4.0;//please import oraclizeAPI_pre0.4.sol when solidity < 0.4.0 contract OraclizeI { address public cbAddress; function query(uint _timestamp, string _datasource, string _arg) payable returns (bytes32 _id); function query_withGasLimit(uint _timestamp, string _datasource, string _arg, uint _gaslimit) payable returns (bytes32 _id); function query2(uint _timestamp, string _datasource, string _arg1, string _arg2) payable returns (bytes32 _id); function query2_withGasLimit(uint _timestamp, string _datasource, string _arg1, string _arg2, uint _gaslimit) payable returns (bytes32 _id); function queryN(uint _timestamp, string _datasource, bytes _argN) payable returns (bytes32 _id); function queryN_withGasLimit(uint _timestamp, string _datasource, bytes _argN, uint _gaslimit) payable returns (bytes32 _id); function getPrice(string _datasource) returns (uint _dsprice); function getPrice(string _datasource, uint gaslimit) returns (uint _dsprice); function useCoupon(string _coupon); function setProofType(byte _proofType); function setConfig(bytes32 _config); function setCustomGasPrice(uint _gasPrice); function randomDS_getSessionPubKeyHash() returns(bytes32); } contract OraclizeAddrResolverI { function getAddress() returns (address _addr); } contract usingOraclize { uint constant day = 60*60*24; uint constant week = 60*60*24*7; uint constant month = 60*60*24*30; byte constant proofType_NONE = 0x00; byte constant proofType_TLSNotary = 0x10; byte constant proofType_Android = 0x20; byte constant proofType_Ledger = 0x30; byte constant proofType_Native = 0xF0; byte constant proofStorage_IPFS = 0x01; uint8 constant networkID_auto = 0; uint8 constant networkID_mainnet = 1; uint8 constant networkID_testnet = 2; uint8 constant networkID_morden = 2; uint8 constant networkID_consensys = 161; OraclizeAddrResolverI OAR; OraclizeI oraclize; modifier oraclizeAPI { if((address(OAR)==0)||(getCodeSize(address(OAR))==0)) oraclize_setNetwork(networkID_auto); oraclize = OraclizeI(OAR.getAddress()); _; } modifier coupon(string code){ oraclize = OraclizeI(OAR.getAddress()); oraclize.useCoupon(code); _; } function oraclize_setNetwork(uint8 networkID) internal returns(bool){ if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed)>0){ //mainnet OAR = OraclizeAddrResolverI(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed); oraclize_setNetworkName("eth_mainnet"); return true; } if (getCodeSize(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1)>0){ //ropsten testnet OAR = OraclizeAddrResolverI(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1); oraclize_setNetworkName("eth_ropsten3"); return true; } if (getCodeSize(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e)>0){ //kovan testnet OAR = OraclizeAddrResolverI(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e); oraclize_setNetworkName("eth_kovan"); return true; } if (getCodeSize(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48)>0){ //rinkeby testnet OAR = OraclizeAddrResolverI(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48); oraclize_setNetworkName("eth_rinkeby"); return true; } if (getCodeSize(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475)>0){ //ethereum-bridge OAR = OraclizeAddrResolverI(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475); return true; } if (getCodeSize(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF)>0){ //ether.camp ide OAR = OraclizeAddrResolverI(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF); return true; } if (getCodeSize(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA)>0){ //browser-solidity OAR = OraclizeAddrResolverI(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA); return true; } return false; } function __callback(bytes32 myid, string result) { __callback(myid, result, new bytes(0)); } function __callback(bytes32 myid, string result, bytes proof) { } function oraclize_useCoupon(string code) oraclizeAPI internal { oraclize.useCoupon(code); } function oraclize_getPrice(string datasource) oraclizeAPI internal returns (uint){ return oraclize.getPrice(datasource); } function oraclize_getPrice(string datasource, uint gaslimit) oraclizeAPI internal returns (uint){ return oraclize.getPrice(datasource, gaslimit); } function oraclize_query(string datasource, string arg) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price return oraclize.query.value(price)(0, datasource, arg); } function oraclize_query(uint timestamp, string datasource, string arg) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price return oraclize.query.value(price)(timestamp, datasource, arg); } function oraclize_query(uint timestamp, string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price return oraclize.query_withGasLimit.value(price)(timestamp, datasource, arg, gaslimit); } function oraclize_query(string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price return oraclize.query_withGasLimit.value(price)(0, datasource, arg, gaslimit); } function oraclize_query(string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price return oraclize.query2.value(price)(0, datasource, arg1, arg2); } function oraclize_query(uint timestamp, string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price return oraclize.query2.value(price)(timestamp, datasource, arg1, arg2); } function oraclize_query(uint timestamp, string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price return oraclize.query2_withGasLimit.value(price)(timestamp, datasource, arg1, arg2, gaslimit); } function oraclize_query(string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price return oraclize.query2_withGasLimit.value(price)(0, datasource, arg1, arg2, gaslimit); } function oraclize_query(string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price bytes memory args = stra2cbor(argN); return oraclize.queryN.value(price)(0, datasource, args); } function oraclize_query(uint timestamp, string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price bytes memory args = stra2cbor(argN); return oraclize.queryN.value(price)(timestamp, datasource, args); } function oraclize_query(uint timestamp, string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price bytes memory args = stra2cbor(argN); return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit); } function oraclize_query(string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price bytes memory args = stra2cbor(argN); return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit); } function oraclize_query(string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](1); dynargs[0] = args[0]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](1); dynargs[0] = args[0]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](1); dynargs[0] = args[0]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](1); dynargs[0] = args[0]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { string[] memory dynargs = new string[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[] argN) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price bytes memory args = ba2cbor(argN); return oraclize.queryN.value(price)(0, datasource, args); } function oraclize_query(uint timestamp, string datasource, bytes[] argN) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource); if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price bytes memory args = ba2cbor(argN); return oraclize.queryN.value(price)(timestamp, datasource, args); } function oraclize_query(uint timestamp, string datasource, bytes[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price bytes memory args = ba2cbor(argN); return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit); } function oraclize_query(string datasource, bytes[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){ uint price = oraclize.getPrice(datasource, gaslimit); if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price bytes memory args = ba2cbor(argN); return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit); } function oraclize_query(string datasource, bytes[1] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](1); dynargs[0] = args[0]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[1] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](1); dynargs[0] = args[0]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](1); dynargs[0] = args[0]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](1); dynargs[0] = args[0]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[2] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[2] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](2); dynargs[0] = args[0]; dynargs[1] = args[1]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[3] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[3] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](3); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[4] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[4] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](4); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[5] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[5] args) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(timestamp, datasource, dynargs); } function oraclize_query(uint timestamp, string datasource, bytes[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(timestamp, datasource, dynargs, gaslimit); } function oraclize_query(string datasource, bytes[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) { bytes[] memory dynargs = new bytes[](5); dynargs[0] = args[0]; dynargs[1] = args[1]; dynargs[2] = args[2]; dynargs[3] = args[3]; dynargs[4] = args[4]; return oraclize_query(datasource, dynargs, gaslimit); } function oraclize_cbAddress() oraclizeAPI internal returns (address){ return oraclize.cbAddress(); } function oraclize_setProof(byte proofP) oraclizeAPI internal { return oraclize.setProofType(proofP); } function oraclize_setCustomGasPrice(uint gasPrice) oraclizeAPI internal { return oraclize.setCustomGasPrice(gasPrice); } function oraclize_setConfig(bytes32 config) oraclizeAPI internal { return oraclize.setConfig(config); } function oraclize_randomDS_getSessionPubKeyHash() oraclizeAPI internal returns (bytes32){ return oraclize.randomDS_getSessionPubKeyHash(); } function getCodeSize(address _addr) constant internal returns(uint _size) { assembly { _size := extcodesize(_addr) } } function parseAddr(string _a) internal returns (address){ bytes memory tmp = bytes(_a); uint160 iaddr = 0; uint160 b1; uint160 b2; for (uint i=2; i<2+2*20; i+=2){ iaddr *= 256; b1 = uint160(tmp[i]); b2 = uint160(tmp[i+1]); if ((b1 >= 97)&&(b1 <= 102)) b1 -= 87; else if ((b1 >= 65)&&(b1 <= 70)) b1 -= 55; else if ((b1 >= 48)&&(b1 <= 57)) b1 -= 48; if ((b2 >= 97)&&(b2 <= 102)) b2 -= 87; else if ((b2 >= 65)&&(b2 <= 70)) b2 -= 55; else if ((b2 >= 48)&&(b2 <= 57)) b2 -= 48; iaddr += (b1*16+b2); } return address(iaddr); } function strCompare(string _a, string _b) internal returns (int) { bytes memory a = bytes(_a); bytes memory b = bytes(_b); uint minLength = a.length; if (b.length < minLength) minLength = b.length; for (uint i = 0; i < minLength; i ++) if (a[i] < b[i]) return -1; else if (a[i] > b[i]) return 1; if (a.length < b.length) return -1; else if (a.length > b.length) return 1; else return 0; } function indexOf(string _haystack, string _needle) internal returns (int) { bytes memory h = bytes(_haystack); bytes memory n = bytes(_needle); if(h.length < 1 || n.length < 1 || (n.length > h.length)) return -1; else if(h.length > (2**128 -1)) return -1; else { uint subindex = 0; for (uint i = 0; i < h.length; i ++) { if (h[i] == n[0]) { subindex = 1; while(subindex < n.length && (i + subindex) < h.length && h[i + subindex] == n[subindex]) { subindex++; } if(subindex == n.length) return int(i); } } return -1; } } function strConcat(string _a, string _b, string _c, string _d, string _e) internal returns (string) { bytes memory _ba = bytes(_a); bytes memory _bb = bytes(_b); bytes memory _bc = bytes(_c); bytes memory _bd = bytes(_d); bytes memory _be = bytes(_e); string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length); bytes memory babcde = bytes(abcde); uint k = 0; for (uint i = 0; i < _ba.length; i++) babcde[k++] = _ba[i]; for (i = 0; i < _bb.length; i++) babcde[k++] = _bb[i]; for (i = 0; i < _bc.length; i++) babcde[k++] = _bc[i]; for (i = 0; i < _bd.length; i++) babcde[k++] = _bd[i]; for (i = 0; i < _be.length; i++) babcde[k++] = _be[i]; return string(babcde); } function strConcat(string _a, string _b, string _c, string _d) internal returns (string) { return strConcat(_a, _b, _c, _d, ""); } function strConcat(string _a, string _b, string _c) internal returns (string) { return strConcat(_a, _b, _c, "", ""); } function strConcat(string _a, string _b) internal returns (string) { return strConcat(_a, _b, "", "", ""); } // parseInt function parseInt(string _a) internal returns (uint) { return parseInt(_a, 0); } // parseInt(parseFloat*10^_b) function parseInt(string _a, uint _b) internal returns (uint) { bytes memory bresult = bytes(_a); uint mint = 0; bool decimals = false; for (uint i=0; i<bresult.length; i++){ if ((bresult[i] >= 48)&&(bresult[i] <= 57)){ if (decimals){ if (_b == 0) break; else _b--; } mint *= 10; mint += uint(bresult[i]) - 48; } else if (bresult[i] == 46) decimals = true; } if (_b > 0) mint *= 10**_b; return mint; } function uint2str(uint i) internal returns (string){ if (i == 0) return "0"; uint j = i; uint len; while (j != 0){ len++; j /= 10; } bytes memory bstr = new bytes(len); uint k = len - 1; while (i != 0){ bstr[k--] = byte(48 + i % 10); i /= 10; } return string(bstr); } function stra2cbor(string[] arr) internal returns (bytes) { uint arrlen = arr.length; // get correct cbor output length uint outputlen = 0; bytes[] memory elemArray = new bytes[](arrlen); for (uint i = 0; i < arrlen; i++) { elemArray[i] = (bytes(arr[i])); outputlen += elemArray[i].length + (elemArray[i].length - 1)/23 + 3; //+3 accounts for paired identifier types } uint ctr = 0; uint cborlen = arrlen + 0x80; outputlen += byte(cborlen).length; bytes memory res = new bytes(outputlen); while (byte(cborlen).length > ctr) { res[ctr] = byte(cborlen)[ctr]; ctr++; } for (i = 0; i < arrlen; i++) { res[ctr] = 0x5F; ctr++; for (uint x = 0; x < elemArray[i].length; x++) { // if there's a bug with larger strings, this may be the culprit if (x % 23 == 0) { uint elemcborlen = elemArray[i].length - x >= 24 ? 23 : elemArray[i].length - x; elemcborlen += 0x40; uint lctr = ctr; while (byte(elemcborlen).length > ctr - lctr) { res[ctr] = byte(elemcborlen)[ctr - lctr]; ctr++; } } res[ctr] = elemArray[i][x]; ctr++; } res[ctr] = 0xFF; ctr++; } return res; } function ba2cbor(bytes[] arr) internal returns (bytes) { uint arrlen = arr.length; // get correct cbor output length uint outputlen = 0; bytes[] memory elemArray = new bytes[](arrlen); for (uint i = 0; i < arrlen; i++) { elemArray[i] = (bytes(arr[i])); outputlen += elemArray[i].length + (elemArray[i].length - 1)/23 + 3; //+3 accounts for paired identifier types } uint ctr = 0; uint cborlen = arrlen + 0x80; outputlen += byte(cborlen).length; bytes memory res = new bytes(outputlen); while (byte(cborlen).length > ctr) { res[ctr] = byte(cborlen)[ctr]; ctr++; } for (i = 0; i < arrlen; i++) { res[ctr] = 0x5F; ctr++; for (uint x = 0; x < elemArray[i].length; x++) { // if there's a bug with larger strings, this may be the culprit if (x % 23 == 0) { uint elemcborlen = elemArray[i].length - x >= 24 ? 23 : elemArray[i].length - x; elemcborlen += 0x40; uint lctr = ctr; while (byte(elemcborlen).length > ctr - lctr) { res[ctr] = byte(elemcborlen)[ctr - lctr]; ctr++; } } res[ctr] = elemArray[i][x]; ctr++; } res[ctr] = 0xFF; ctr++; } return res; } string oraclize_network_name; function oraclize_setNetworkName(string _network_name) internal { oraclize_network_name = _network_name; } function oraclize_getNetworkName() internal returns (string) { return oraclize_network_name; } function oraclize_newRandomDSQuery(uint _delay, uint _nbytes, uint _customGasLimit) internal returns (bytes32){ if ((_nbytes == 0)||(_nbytes > 32)) throw; bytes memory nbytes = new bytes(1); nbytes[0] = byte(_nbytes); bytes memory unonce = new bytes(32); bytes memory sessionKeyHash = new bytes(32); bytes32 sessionKeyHash_bytes32 = oraclize_randomDS_getSessionPubKeyHash(); assembly { mstore(unonce, 0x20) mstore(add(unonce, 0x20), xor(blockhash(sub(number, 1)), xor(coinbase, timestamp))) mstore(sessionKeyHash, 0x20) mstore(add(sessionKeyHash, 0x20), sessionKeyHash_bytes32) } bytes[3] memory args = [unonce, nbytes, sessionKeyHash]; bytes32 queryId = oraclize_query(_delay, "random", args, _customGasLimit); oraclize_randomDS_setCommitment(queryId, sha3(bytes8(_delay), args[1], sha256(args[0]), args[2])); return queryId; } function oraclize_randomDS_setCommitment(bytes32 queryId, bytes32 commitment) internal { oraclize_randomDS_args[queryId] = commitment; } mapping(bytes32=>bytes32) oraclize_randomDS_args; mapping(bytes32=>bool) oraclize_randomDS_sessionKeysHashVerified; function verifySig(bytes32 tosignh, bytes dersig, bytes pubkey) internal returns (bool){ bool sigok; address signer; bytes32 sigr; bytes32 sigs; bytes memory sigr_ = new bytes(32); uint offset = 4+(uint(dersig[3]) - 0x20); sigr_ = copyBytes(dersig, offset, 32, sigr_, 0); bytes memory sigs_ = new bytes(32); offset += 32 + 2; sigs_ = copyBytes(dersig, offset+(uint(dersig[offset-1]) - 0x20), 32, sigs_, 0); assembly { sigr := mload(add(sigr_, 32)) sigs := mload(add(sigs_, 32)) } (sigok, signer) = safer_ecrecover(tosignh, 27, sigr, sigs); if (address(sha3(pubkey)) == signer) return true; else { (sigok, signer) = safer_ecrecover(tosignh, 28, sigr, sigs); return (address(sha3(pubkey)) == signer); } } function oraclize_randomDS_proofVerify__sessionKeyValidity(bytes proof, uint sig2offset) internal returns (bool) { bool sigok; // Step 6: verify the attestation signature, APPKEY1 must sign the sessionKey from the correct ledger app (CODEHASH) bytes memory sig2 = new bytes(uint(proof[sig2offset+1])+2); copyBytes(proof, sig2offset, sig2.length, sig2, 0); bytes memory appkey1_pubkey = new bytes(64); copyBytes(proof, 3+1, 64, appkey1_pubkey, 0); bytes memory tosign2 = new bytes(1+65+32); tosign2[0] = 1; //role copyBytes(proof, sig2offset-65, 65, tosign2, 1); bytes memory CODEHASH = hex"fd94fa71bc0ba10d39d464d0d8f465efeef0a2764e3887fcc9df41ded20f505c"; copyBytes(CODEHASH, 0, 32, tosign2, 1+65); sigok = verifySig(sha256(tosign2), sig2, appkey1_pubkey); if (sigok == false) return false; // Step 7: verify the APPKEY1 provenance (must be signed by Ledger) bytes memory LEDGERKEY = hex"7fb956469c5c9b89840d55b43537e66a98dd4811ea0a27224272c2e5622911e8537a2f8e86a46baec82864e98dd01e9ccc2f8bc5dfc9cbe5a91a290498dd96e4"; bytes memory tosign3 = new bytes(1+65); tosign3[0] = 0xFE; copyBytes(proof, 3, 65, tosign3, 1); bytes memory sig3 = new bytes(uint(proof[3+65+1])+2); copyBytes(proof, 3+65, sig3.length, sig3, 0); sigok = verifySig(sha256(tosign3), sig3, LEDGERKEY); return sigok; } modifier oraclize_randomDS_proofVerify(bytes32 _queryId, string _result, bytes _proof) { // Step 1: the prefix has to match 'LP\x01' (Ledger Proof version 1) if ((_proof[0] != "L")||(_proof[1] != "P")||(_proof[2] != 1)) throw; bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName()); if (proofVerified == false) throw; _; } function matchBytes32Prefix(bytes32 content, bytes prefix) internal returns (bool){ bool match_ = true; for (var i=0; i<prefix.length; i++){ if (content[i] != prefix[i]) match_ = false; } return match_; } function oraclize_randomDS_proofVerify__main(bytes proof, bytes32 queryId, bytes result, string context_name) internal returns (bool){ bool checkok; // Step 2: the unique keyhash has to match with the sha256 of (context name + queryId) uint ledgerProofLength = 3+65+(uint(proof[3+65+1])+2)+32; bytes memory keyhash = new bytes(32); copyBytes(proof, ledgerProofLength, 32, keyhash, 0); checkok = (sha3(keyhash) == sha3(sha256(context_name, queryId))); if (checkok == false) return false; bytes memory sig1 = new bytes(uint(proof[ledgerProofLength+(32+8+1+32)+1])+2); copyBytes(proof, ledgerProofLength+(32+8+1+32), sig1.length, sig1, 0); // Step 3: we assume sig1 is valid (it will be verified during step 5) and we verify if 'result' is the prefix of sha256(sig1) checkok = matchBytes32Prefix(sha256(sig1), result); if (checkok == false) return false; // Step 4: commitment match verification, sha3(delay, nbytes, unonce, sessionKeyHash) == commitment in storage. // This is to verify that the computed args match with the ones specified in the query. bytes memory commitmentSlice1 = new bytes(8+1+32); copyBytes(proof, ledgerProofLength+32, 8+1+32, commitmentSlice1, 0); bytes memory sessionPubkey = new bytes(64); uint sig2offset = ledgerProofLength+32+(8+1+32)+sig1.length+65; copyBytes(proof, sig2offset-64, 64, sessionPubkey, 0); bytes32 sessionPubkeyHash = sha256(sessionPubkey); if (oraclize_randomDS_args[queryId] == sha3(commitmentSlice1, sessionPubkeyHash)){ //unonce, nbytes and sessionKeyHash match delete oraclize_randomDS_args[queryId]; } else return false; // Step 5: validity verification for sig1 (keyhash and args signed with the sessionKey) bytes memory tosign1 = new bytes(32+8+1+32); copyBytes(proof, ledgerProofLength, 32+8+1+32, tosign1, 0); checkok = verifySig(sha256(tosign1), sig1, sessionPubkey); if (checkok == false) return false; // verify if sessionPubkeyHash was verified already, if not.. let's do it! if (oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] == false){ oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] = oraclize_randomDS_proofVerify__sessionKeyValidity(proof, sig2offset); } return oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash]; } // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license function copyBytes(bytes from, uint fromOffset, uint length, bytes to, uint toOffset) internal returns (bytes) { uint minLength = length + toOffset; if (to.length < minLength) { // Buffer too small throw; // Should be a better way? } // NOTE: the offset 32 is added to skip the `size` field of both bytes variables uint i = 32 + fromOffset; uint j = 32 + toOffset; while (i < (32 + fromOffset + length)) { assembly { let tmp := mload(add(from, i)) mstore(add(to, j), tmp) } i += 32; j += 32; } return to; } // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license // Duplicate Solidity's ecrecover, but catching the CALL return value function safer_ecrecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal returns (bool, address) { // We do our own memory management here. Solidity uses memory offset // 0x40 to store the current end of memory. We write past it (as // writes are memory extensions), but don't update the offset so // Solidity will reuse it. The memory used here is only needed for // this context. // FIXME: inline assembly can't access return values bool ret; address addr; assembly { let size := mload(0x40) mstore(size, hash) mstore(add(size, 32), v) mstore(add(size, 64), r) mstore(add(size, 96), s) // NOTE: we can reuse the request memory because we deal with // the return code ret := call(3000, 1, 0, size, 128, size, 32) addr := mload(size) } return (ret, addr); } // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license function ecrecovery(bytes32 hash, bytes sig) internal returns (bool, address) { bytes32 r; bytes32 s; uint8 v; if (sig.length != 65) return (false, 0); // The signature format is a compact form of: // {bytes32 r}{bytes32 s}{uint8 v} // Compact means, uint8 is not padded to 32 bytes. assembly { r := mload(add(sig, 32)) s := mload(add(sig, 64)) // Here we are loading the last 32 bytes. We exploit the fact that // 'mload' will pad with zeroes if we overread. // There is no 'mload8' to do this, but that would be nicer. v := byte(0, mload(add(sig, 96))) // Alternative solution: // 'byte' is not working due to the Solidity parser, so lets // use the second best option, 'and' // v := and(mload(add(sig, 65)), 255) } // albeit non-transactional signatures are not specified by the YP, one would expect it // to match the YP range of [27, 28] // // geth uses [0, 1] and some clients have followed. This might change, see: // https://github.com/ethereum/go-ethereum/issues/2053 if (v < 27) v += 27; if (v != 27 && v != 28) return (false, 0); return safer_ecrecover(hash, v, r, s); } } // </ORACLIZE_API>

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016

// <ORACLIZE_API> /* Copyright (c) 2015-2016 Oraclize SRL Copyright (c) 2016 Oraclize LTD       Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:       The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.       THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */   pragma solidity ^0.4.0;//please import oraclizeAPI_pre0.4.sol when solidity < 0.4.0   contract OraclizeI {     address public cbAddress;     function query(uint _timestamp, string _datasource, string _arg) payable returns (bytes32 _id);     function query_withGasLimit(uint _timestamp, string _datasource, string _arg, uint _gaslimit) payable returns (bytes32 _id);     function query2(uint _timestamp, string _datasource, string _arg1, string _arg2) payable returns (bytes32 _id);     function query2_withGasLimit(uint _timestamp, string _datasource, string _arg1, string _arg2, uint _gaslimit) payable returns (bytes32 _id);     function queryN(uint _timestamp, string _datasource, bytes _argN) payable returns (bytes32 _id);     function queryN_withGasLimit(uint _timestamp, string _datasource, bytes _argN, uint _gaslimit) payable returns (bytes32 _id);     function getPrice(string _datasource) returns (uint _dsprice);     function getPrice(string _datasource, uint gaslimit) returns (uint _dsprice);     function useCoupon(string _coupon);     function setProofType(byte _proofType);     function setConfig(bytes32 _config);     function setCustomGasPrice(uint _gasPrice);     function randomDS_getSessionPubKeyHash() returns(bytes32); } contract OraclizeAddrResolverI {     function getAddress() returns (address _addr); } contract usingOraclize {     uint constant day = 60*60*24;     uint constant week = 60*60*24*7;     uint constant month = 60*60*24*30;     byte constant proofType_NONE = 0x00;     byte constant proofType_TLSNotary = 0x10;     byte constant proofType_Android = 0x20;     byte constant proofType_Ledger = 0x30;     byte constant proofType_Native = 0xF0;     byte constant proofStorage_IPFS = 0x01;     uint8 constant networkID_auto = 0;     uint8 constant networkID_mainnet = 1;     uint8 constant networkID_testnet = 2;     uint8 constant networkID_morden = 2;     uint8 constant networkID_consensys = 161;       OraclizeAddrResolverI OAR;       OraclizeI oraclize;     modifier oraclizeAPI {         if((address(OAR)==0)||(getCodeSize(address(OAR))==0)) oraclize_setNetwork(networkID_auto);         oraclize = OraclizeI(OAR.getAddress());         _;     }     modifier coupon(string code){         oraclize = OraclizeI(OAR.getAddress());         oraclize.useCoupon(code);         _;     }       function oraclize_setNetwork(uint8 networkID) internal returns(bool){         if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed)>0){ //mainnet             OAR = OraclizeAddrResolverI(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed);             oraclize_setNetworkName("eth_mainnet");             return true;         }         if (getCodeSize(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1)>0){ //ropsten testnet             OAR = OraclizeAddrResolverI(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1);             oraclize_setNetworkName("eth_ropsten3");             return true;         }         if (getCodeSize(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e)>0){ //kovan testnet             OAR = OraclizeAddrResolverI(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e);             oraclize_setNetworkName("eth_kovan");             return true;         }         if (getCodeSize(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48)>0){ //rinkeby testnet             OAR = OraclizeAddrResolverI(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48);             oraclize_setNetworkName("eth_rinkeby");             return true;         }         if (getCodeSize(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475)>0){ //ethereum-bridge             OAR = OraclizeAddrResolverI(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475);             return true;         }         if (getCodeSize(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF)>0){ //ether.camp ide             OAR = OraclizeAddrResolverI(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF);             return true;         }         if (getCodeSize(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA)>0){ //browser-solidity             OAR = OraclizeAddrResolverI(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA);             return true;         }         return false;     }       function __callback(bytes32 myid, string result) {         __callback(myid, result, new bytes(0));     }     function __callback(bytes32 myid, string result, bytes proof) {     }          function oraclize_useCoupon(string code) oraclizeAPI internal {         oraclize.useCoupon(code);     }       function oraclize_getPrice(string datasource) oraclizeAPI internal returns (uint){         return oraclize.getPrice(datasource);     }       function oraclize_getPrice(string datasource, uint gaslimit) oraclizeAPI internal returns (uint){         return oraclize.getPrice(datasource, gaslimit);     }          function oraclize_query(string datasource, string arg) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource);         if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price         return oraclize.query.value(price)(0, datasource, arg);     }     function oraclize_query(uint timestamp, string datasource, string arg) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource);         if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price         return oraclize.query.value(price)(timestamp, datasource, arg);     }     function oraclize_query(uint timestamp, string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource, gaslimit);         if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price         return oraclize.query_withGasLimit.value(price)(timestamp, datasource, arg, gaslimit);     }     function oraclize_query(string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource, gaslimit);         if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price         return oraclize.query_withGasLimit.value(price)(0, datasource, arg, gaslimit);     }     function oraclize_query(string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource);         if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price         return oraclize.query2.value(price)(0, datasource, arg1, arg2);     }     function oraclize_query(uint timestamp, string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource);         if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price         return oraclize.query2.value(price)(timestamp, datasource, arg1, arg2);     }     function oraclize_query(uint timestamp, string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource, gaslimit);         if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price         return oraclize.query2_withGasLimit.value(price)(timestamp, datasource, arg1, arg2, gaslimit);     }     function oraclize_query(string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource, gaslimit);         if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price         return oraclize.query2_withGasLimit.value(price)(0, datasource, arg1, arg2, gaslimit);     }     function oraclize_query(string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource);         if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price         bytes memory args = stra2cbor(argN);         return oraclize.queryN.value(price)(0, datasource, args);     }     function oraclize_query(uint timestamp, string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource);         if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price         bytes memory args = stra2cbor(argN);         return oraclize.queryN.value(price)(timestamp, datasource, args);     }     function oraclize_query(uint timestamp, string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource, gaslimit);         if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price         bytes memory args = stra2cbor(argN);         return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit);     }     function oraclize_query(string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource, gaslimit);         if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price         bytes memory args = stra2cbor(argN);         return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit);     }     function oraclize_query(string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](1);         dynargs[0] = args[0];         return oraclize_query(datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](1);         dynargs[0] = args[0];         return oraclize_query(timestamp, datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](1);         dynargs[0] = args[0];         return oraclize_query(timestamp, datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](1);         dynargs[0] = args[0];               return oraclize_query(datasource, dynargs, gaslimit);     }          function oraclize_query(string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](2);         dynargs[0] = args[0];         dynargs[1] = args[1];         return oraclize_query(datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](2);         dynargs[0] = args[0];         dynargs[1] = args[1];         return oraclize_query(timestamp, datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](2);         dynargs[0] = args[0];         dynargs[1] = args[1];         return oraclize_query(timestamp, datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](2);         dynargs[0] = args[0];         dynargs[1] = args[1];         return oraclize_query(datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](3);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         return oraclize_query(datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](3);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         return oraclize_query(timestamp, datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](3);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         return oraclize_query(timestamp, datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](3);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         return oraclize_query(datasource, dynargs, gaslimit);     }          function oraclize_query(string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](4);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         return oraclize_query(datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](4);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         return oraclize_query(timestamp, datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](4);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         return oraclize_query(timestamp, datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](4);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         return oraclize_query(datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](5);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         dynargs[4] = args[4];         return oraclize_query(datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](5);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         dynargs[4] = args[4];         return oraclize_query(timestamp, datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](5);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         dynargs[4] = args[4];         return oraclize_query(timestamp, datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         string[] memory dynargs = new string[](5);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         dynargs[4] = args[4];         return oraclize_query(datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, bytes[] argN) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource);         if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price         bytes memory args = ba2cbor(argN);         return oraclize.queryN.value(price)(0, datasource, args);     }     function oraclize_query(uint timestamp, string datasource, bytes[] argN) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource);         if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price         bytes memory args = ba2cbor(argN);         return oraclize.queryN.value(price)(timestamp, datasource, args);     }     function oraclize_query(uint timestamp, string datasource, bytes[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource, gaslimit);         if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price         bytes memory args = ba2cbor(argN);         return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit);     }     function oraclize_query(string datasource, bytes[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){         uint price = oraclize.getPrice(datasource, gaslimit);         if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price         bytes memory args = ba2cbor(argN);         return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit);     }     function oraclize_query(string datasource, bytes[1] args) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](1);         dynargs[0] = args[0];         return oraclize_query(datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, bytes[1] args) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](1);         dynargs[0] = args[0];         return oraclize_query(timestamp, datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, bytes[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](1);         dynargs[0] = args[0];         return oraclize_query(timestamp, datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, bytes[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](1);         dynargs[0] = args[0];               return oraclize_query(datasource, dynargs, gaslimit);     }          function oraclize_query(string datasource, bytes[2] args) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](2);         dynargs[0] = args[0];         dynargs[1] = args[1];         return oraclize_query(datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, bytes[2] args) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](2);         dynargs[0] = args[0];         dynargs[1] = args[1];         return oraclize_query(timestamp, datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, bytes[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](2);         dynargs[0] = args[0];         dynargs[1] = args[1];         return oraclize_query(timestamp, datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, bytes[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](2);         dynargs[0] = args[0];         dynargs[1] = args[1];         return oraclize_query(datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, bytes[3] args) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](3);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         return oraclize_query(datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, bytes[3] args) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](3);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         return oraclize_query(timestamp, datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, bytes[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](3);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         return oraclize_query(timestamp, datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, bytes[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](3);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         return oraclize_query(datasource, dynargs, gaslimit);     }          function oraclize_query(string datasource, bytes[4] args) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](4);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         return oraclize_query(datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, bytes[4] args) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](4);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         return oraclize_query(timestamp, datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, bytes[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](4);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         return oraclize_query(timestamp, datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, bytes[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](4);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         return oraclize_query(datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, bytes[5] args) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](5);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         dynargs[4] = args[4];         return oraclize_query(datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, bytes[5] args) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](5);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         dynargs[4] = args[4];         return oraclize_query(timestamp, datasource, dynargs);     }     function oraclize_query(uint timestamp, string datasource, bytes[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](5);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         dynargs[4] = args[4];         return oraclize_query(timestamp, datasource, dynargs, gaslimit);     }     function oraclize_query(string datasource, bytes[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {         bytes[] memory dynargs = new bytes[](5);         dynargs[0] = args[0];         dynargs[1] = args[1];         dynargs[2] = args[2];         dynargs[3] = args[3];         dynargs[4] = args[4];         return oraclize_query(datasource, dynargs, gaslimit);     }       function oraclize_cbAddress() oraclizeAPI internal returns (address){         return oraclize.cbAddress();     }     function oraclize_setProof(byte proofP) oraclizeAPI internal {         return oraclize.setProofType(proofP);     }     function oraclize_setCustomGasPrice(uint gasPrice) oraclizeAPI internal {         return oraclize.setCustomGasPrice(gasPrice);     }     function oraclize_setConfig(bytes32 config) oraclizeAPI internal {         return oraclize.setConfig(config);     }          function oraclize_randomDS_getSessionPubKeyHash() oraclizeAPI internal returns (bytes32){         return oraclize.randomDS_getSessionPubKeyHash();     }       function getCodeSize(address _addr) constant internal returns(uint _size) {         assembly {             _size := extcodesize(_addr)         }     }       function parseAddr(string _a) internal returns (address){         bytes memory tmp = bytes(_a);         uint160 iaddr = 0;         uint160 b1;         uint160 b2;         for (uint i=2; i<2+2*20; i+=2){             iaddr *= 256;             b1 = uint160(tmp[i]);             b2 = uint160(tmp[i+1]);             if ((b1 >= 97)&&(b1 <= 102)) b1 -= 87;             else if ((b1 >= 65)&&(b1 <= 70)) b1 -= 55;             else if ((b1 >= 48)&&(b1 <= 57)) b1 -= 48;             if ((b2 >= 97)&&(b2 <= 102)) b2 -= 87;             else if ((b2 >= 65)&&(b2 <= 70)) b2 -= 55;             else if ((b2 >= 48)&&(b2 <= 57)) b2 -= 48;             iaddr += (b1*16+b2);         }         return address(iaddr);     }       function strCompare(string _a, string _b) internal returns (int) {         bytes memory a = bytes(_a);         bytes memory b = bytes(_b);         uint minLength = a.length;         if (b.length < minLength) minLength = b.length;         for (uint i = 0; i < minLength; i ++)             if (a[i] < b[i])                 return -1;             else if (a[i] > b[i])                 return 1;         if (a.length < b.length)             return -1;         else if (a.length > b.length)             return 1;         else             return 0;     }       function indexOf(string _haystack, string _needle) internal returns (int) {         bytes memory h = bytes(_haystack);         bytes memory n = bytes(_needle);         if(h.length < 1 || n.length < 1 || (n.length > h.length))             return -1;         else if(h.length > (2**128 -1))             return -1;         else         {             uint subindex = 0;             for (uint i = 0; i < h.length; i ++)             {                 if (h[i] == n[0])                 {                     subindex = 1;                     while(subindex < n.length && (i + subindex) < h.length && h[i + subindex] == n[subindex])                     {                         subindex++;                     }                     if(subindex == n.length)                         return int(i);                 }             }             return -1;         }     }       function strConcat(string _a, string _b, string _c, string _d, string _e) internal returns (string) {         bytes memory _ba = bytes(_a);         bytes memory _bb = bytes(_b);         bytes memory _bc = bytes(_c);         bytes memory _bd = bytes(_d);         bytes memory _be = bytes(_e);         string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length);         bytes memory babcde = bytes(abcde);         uint k = 0;         for (uint i = 0; i < _ba.length; i++) babcde[k++] = _ba[i];         for (i = 0; i < _bb.length; i++) babcde[k++] = _bb[i];         for (i = 0; i < _bc.length; i++) babcde[k++] = _bc[i];         for (i = 0; i < _bd.length; i++) babcde[k++] = _bd[i];         for (i = 0; i < _be.length; i++) babcde[k++] = _be[i];         return string(babcde);     }       function strConcat(string _a, string _b, string _c, string _d) internal returns (string) {         return strConcat(_a, _b, _c, _d, "");     }       function strConcat(string _a, string _b, string _c) internal returns (string) {         return strConcat(_a, _b, _c, "", "");     }       function strConcat(string _a, string _b) internal returns (string) {         return strConcat(_a, _b, "", "", "");     }       // parseInt     function parseInt(string _a) internal returns (uint) {         return parseInt(_a, 0);     }       // parseInt(parseFloat*10^_b)     function parseInt(string _a, uint _b) internal returns (uint) {         bytes memory bresult = bytes(_a);         uint mint = 0;         bool decimals = false;         for (uint i=0; i<bresult.length; i++){             if ((bresult[i] >= 48)&&(bresult[i] <= 57)){                 if (decimals){                    if (_b == 0) break;                     else _b--;                 }                 mint *= 10;                 mint += uint(bresult[i]) - 48;             } else if (bresult[i] == 46) decimals = true;         }         if (_b > 0) mint *= 10**_b;         return mint;     }       function uint2str(uint i) internal returns (string){         if (i == 0) return "0";         uint j = i;         uint len;         while (j != 0){             len++;             j /= 10;         }         bytes memory bstr = new bytes(len);         uint k = len - 1;         while (i != 0){             bstr[k--] = byte(48 + i % 10);             i /= 10;         }         return string(bstr);     }          function stra2cbor(string[] arr) internal returns (bytes) {             uint arrlen = arr.length;               // get correct cbor output length             uint outputlen = 0;             bytes[] memory elemArray = new bytes[](arrlen);             for (uint i = 0; i < arrlen; i++) {                 elemArray[i] = (bytes(arr[i]));                 outputlen += elemArray[i].length + (elemArray[i].length - 1)/23 + 3; //+3 accounts for paired identifier types             }             uint ctr = 0;             uint cborlen = arrlen + 0x80;             outputlen += byte(cborlen).length;             bytes memory res = new bytes(outputlen);               while (byte(cborlen).length > ctr) {                 res[ctr] = byte(cborlen)[ctr];                 ctr++;             }             for (i = 0; i < arrlen; i++) {                 res[ctr] = 0x5F;                 ctr++;                 for (uint x = 0; x < elemArray[i].length; x++) {                     // if there's a bug with larger strings, this may be the culprit                     if (x % 23 == 0) {                         uint elemcborlen = elemArray[i].length - x >= 24 ? 23 : elemArray[i].length - x;                         elemcborlen += 0x40;                         uint lctr = ctr;                         while (byte(elemcborlen).length > ctr - lctr) {                             res[ctr] = byte(elemcborlen)[ctr - lctr];                             ctr++;                         }                     }                     res[ctr] = elemArray[i][x];                     ctr++;                 }                 res[ctr] = 0xFF;                 ctr++;             }             return res;         }       function ba2cbor(bytes[] arr) internal returns (bytes) {             uint arrlen = arr.length;               // get correct cbor output length             uint outputlen = 0;             bytes[] memory elemArray = new bytes[](arrlen);             for (uint i = 0; i < arrlen; i++) {                 elemArray[i] = (bytes(arr[i]));                 outputlen += elemArray[i].length + (elemArray[i].length - 1)/23 + 3; //+3 accounts for paired identifier types             }             uint ctr = 0;             uint cborlen = arrlen + 0x80;             outputlen += byte(cborlen).length;             bytes memory res = new bytes(outputlen);               while (byte(cborlen).length > ctr) {                 res[ctr] = byte(cborlen)[ctr];                 ctr++;             }             for (i = 0; i < arrlen; i++) {                 res[ctr] = 0x5F;                 ctr++;                 for (uint x = 0; x < elemArray[i].length; x++) {                     // if there's a bug with larger strings, this may be the culprit                     if (x % 23 == 0) {                         uint elemcborlen = elemArray[i].length - x >= 24 ? 23 : elemArray[i].length - x;                         elemcborlen += 0x40;                         uint lctr = ctr;                         while (byte(elemcborlen).length > ctr - lctr) {                             res[ctr] = byte(elemcborlen)[ctr - lctr];                             ctr++;                         }                     }                     res[ctr] = elemArray[i][x];                     ctr++;                 }                 res[ctr] = 0xFF;                 ctr++;             }             return res;         }                       string oraclize_network_name;     function oraclize_setNetworkName(string _network_name) internal {         oraclize_network_name = _network_name;     }          function oraclize_getNetworkName() internal returns (string) {         return oraclize_network_name;     }          function oraclize_newRandomDSQuery(uint _delay, uint _nbytes, uint _customGasLimit) internal returns (bytes32){         if ((_nbytes == 0)||(_nbytes > 32)) throw;         bytes memory nbytes = new bytes(1);         nbytes[0] = byte(_nbytes);         bytes memory unonce = new bytes(32);         bytes memory sessionKeyHash = new bytes(32);         bytes32 sessionKeyHash_bytes32 = oraclize_randomDS_getSessionPubKeyHash();         assembly {             mstore(unonce, 0x20)             mstore(add(unonce, 0x20), xor(blockhash(sub(number, 1)), xor(coinbase, timestamp)))             mstore(sessionKeyHash, 0x20)             mstore(add(sessionKeyHash, 0x20), sessionKeyHash_bytes32)         }         bytes[3] memory args = [unonce, nbytes, sessionKeyHash];         bytes32 queryId = oraclize_query(_delay, "random", args, _customGasLimit);         oraclize_randomDS_setCommitment(queryId, sha3(bytes8(_delay), args[1], sha256(args[0]), args[2]));         return queryId;     }          function oraclize_randomDS_setCommitment(bytes32 queryId, bytes32 commitment) internal {         oraclize_randomDS_args[queryId] = commitment;     }          mapping(bytes32=>bytes32) oraclize_randomDS_args;     mapping(bytes32=>bool) oraclize_randomDS_sessionKeysHashVerified;       function verifySig(bytes32 tosignh, bytes dersig, bytes pubkey) internal returns (bool){         bool sigok;         address signer;                  bytes32 sigr;         bytes32 sigs;                  bytes memory sigr_ = new bytes(32);         uint offset = 4+(uint(dersig[3]) - 0x20);         sigr_ = copyBytes(dersig, offset, 32, sigr_, 0);         bytes memory sigs_ = new bytes(32);         offset += 32 + 2;         sigs_ = copyBytes(dersig, offset+(uint(dersig[offset-1]) - 0x20), 32, sigs_, 0);           assembly {             sigr := mload(add(sigr_, 32))             sigs := mload(add(sigs_, 32))         }                           (sigok, signer) = safer_ecrecover(tosignh, 27, sigr, sigs);         if (address(sha3(pubkey)) == signer) return true;         else {             (sigok, signer) = safer_ecrecover(tosignh, 28, sigr, sigs);             return (address(sha3(pubkey)) == signer);         }     }       function oraclize_randomDS_proofVerify__sessionKeyValidity(bytes proof, uint sig2offset) internal returns (bool) {         bool sigok;                  // Step 6: verify the attestation signature, APPKEY1 must sign the sessionKey from the correct ledger app (CODEHASH)         bytes memory sig2 = new bytes(uint(proof[sig2offset+1])+2);         copyBytes(proof, sig2offset, sig2.length, sig2, 0);                  bytes memory appkey1_pubkey = new bytes(64);         copyBytes(proof, 3+1, 64, appkey1_pubkey, 0);                  bytes memory tosign2 = new bytes(1+65+32);         tosign2[0] = 1; //role         copyBytes(proof, sig2offset-65, 65, tosign2, 1);         bytes memory CODEHASH = hex"fd94fa71bc0ba10d39d464d0d8f465efeef0a2764e3887fcc9df41ded20f505c";         copyBytes(CODEHASH, 0, 32, tosign2, 1+65);         sigok = verifySig(sha256(tosign2), sig2, appkey1_pubkey);                  if (sigok == false) return false;                           // Step 7: verify the APPKEY1 provenance (must be signed by Ledger)         bytes memory LEDGERKEY = hex"7fb956469c5c9b89840d55b43537e66a98dd4811ea0a27224272c2e5622911e8537a2f8e86a46baec82864e98dd01e9ccc2f8bc5dfc9cbe5a91a290498dd96e4";                  bytes memory tosign3 = new bytes(1+65);         tosign3[0] = 0xFE;         copyBytes(proof, 3, 65, tosign3, 1);                  bytes memory sig3 = new bytes(uint(proof[3+65+1])+2);         copyBytes(proof, 3+65, sig3.length, sig3, 0);                  sigok = verifySig(sha256(tosign3), sig3, LEDGERKEY);                  return sigok;     }          modifier oraclize_randomDS_proofVerify(bytes32 _queryId, string _result, bytes _proof) {         // Step 1: the prefix has to match 'LP\x01' (Ledger Proof version 1)         if ((_proof[0] != "L")||(_proof[1] != "P")||(_proof[2] != 1)) throw;                  bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName());         if (proofVerified == false) throw;                  _;     }          function matchBytes32Prefix(bytes32 content, bytes prefix) internal returns (bool){         bool match_ = true;                  for (var i=0; i<prefix.length; i++){             if (content[i] != prefix[i]) match_ = false;         }                  return match_;     }       function oraclize_randomDS_proofVerify__main(bytes proof, bytes32 queryId, bytes result, string context_name) internal returns (bool){         bool checkok;                           // Step 2: the unique keyhash has to match with the sha256 of (context name + queryId)         uint ledgerProofLength = 3+65+(uint(proof[3+65+1])+2)+32;         bytes memory keyhash = new bytes(32);         copyBytes(proof, ledgerProofLength, 32, keyhash, 0);         checkok = (sha3(keyhash) == sha3(sha256(context_name, queryId)));         if (checkok == false) return false;                  bytes memory sig1 = new bytes(uint(proof[ledgerProofLength+(32+8+1+32)+1])+2);         copyBytes(proof, ledgerProofLength+(32+8+1+32), sig1.length, sig1, 0);                           // Step 3: we assume sig1 is valid (it will be verified during step 5) and we verify if 'result' is the prefix of sha256(sig1)         checkok = matchBytes32Prefix(sha256(sig1), result);         if (checkok == false) return false;                           // Step 4: commitment match verification, sha3(delay, nbytes, unonce, sessionKeyHash) == commitment in storage.         // This is to verify that the computed args match with the ones specified in the query.         bytes memory commitmentSlice1 = new bytes(8+1+32);         copyBytes(proof, ledgerProofLength+32, 8+1+32, commitmentSlice1, 0);                  bytes memory sessionPubkey = new bytes(64);         uint sig2offset = ledgerProofLength+32+(8+1+32)+sig1.length+65;         copyBytes(proof, sig2offset-64, 64, sessionPubkey, 0);                  bytes32 sessionPubkeyHash = sha256(sessionPubkey);         if (oraclize_randomDS_args[queryId] == sha3(commitmentSlice1, sessionPubkeyHash)){ //unonce, nbytes and sessionKeyHash match             delete oraclize_randomDS_args[queryId];         } else return false;                           // Step 5: validity verification for sig1 (keyhash and args signed with the sessionKey)         bytes memory tosign1 = new bytes(32+8+1+32);         copyBytes(proof, ledgerProofLength, 32+8+1+32, tosign1, 0);         checkok = verifySig(sha256(tosign1), sig1, sessionPubkey);         if (checkok == false) return false;                  // verify if sessionPubkeyHash was verified already, if not.. let's do it!         if (oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] == false){             oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] = oraclize_randomDS_proofVerify__sessionKeyValidity(proof, sig2offset);         }                  return oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash];     }            // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license     function copyBytes(bytes from, uint fromOffset, uint length, bytes to, uint toOffset) internal returns (bytes) {         uint minLength = length + toOffset;           if (to.length < minLength) {             // Buffer too small             throw; // Should be a better way?         }           // NOTE: the offset 32 is added to skip the `size` field of both bytes variables         uint i = 32 + fromOffset;         uint j = 32 + toOffset;           while (i < (32 + fromOffset + length)) {             assembly {                 let tmp := mload(add(from, i))                 mstore(add(to, j), tmp)             }             i += 32;             j += 32;         }           return to;     }          // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license     // Duplicate Solidity's ecrecover, but catching the CALL return value     function safer_ecrecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal returns (bool, address) {         // We do our own memory management here. Solidity uses memory offset         // 0x40 to store the current end of memory. We write past it (as         // writes are memory extensions), but don't update the offset so         // Solidity will reuse it. The memory used here is only needed for         // this context.           // FIXME: inline assembly can't access return values         bool ret;         address addr;           assembly {             let size := mload(0x40)             mstore(size, hash)             mstore(add(size, 32), v)             mstore(add(size, 64), r)             mstore(add(size, 96), s)               // NOTE: we can reuse the request memory because we deal with             //       the return code             ret := call(3000, 1, 0, size, 128, size, 32)             addr := mload(size)         }            return (ret, addr);     }       // the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license     function ecrecovery(bytes32 hash, bytes sig) internal returns (bool, address) {         bytes32 r;         bytes32 s;         uint8 v;           if (sig.length != 65)           return (false, 0);           // The signature format is a compact form of:         //   {bytes32 r}{bytes32 s}{uint8 v}         // Compact means, uint8 is not padded to 32 bytes.         assembly {             r := mload(add(sig, 32))             s := mload(add(sig, 64))               // Here we are loading the last 32 bytes. We exploit the fact that             // 'mload' will pad with zeroes if we overread.             // There is no 'mload8' to do this, but that would be nicer.             v := byte(0, mload(add(sig, 96)))               // Alternative solution:             // 'byte' is not working due to the Solidity parser, so lets             // use the second best option, 'and'             // v := and(mload(add(sig, 65)), 255)         }           // albeit non-transactional signatures are not specified by the YP, one would expect it         // to match the YP range of [27, 28]         //         // geth uses [0, 1] and some clients have followed. This might change, see:         //  https://github.com/ethereum/go-ethereum/issues/2053         if (v < 27)           v += 27;           if (v != 27 && v != 28)             return (false, 0);           return safer_ecrecover(hash, v, r, s);     }          } // </ORACLIZE_API>

共有:

• クリックして Twitter で共有 (新しいウィンドウで開きます)
• Facebook で共有するにはクリックしてください (新しいウィンドウで開きます)

関連

SNSでもご購読できます。

コメントを残す コメントをキャンセル

コメント ※

名前

メールアドレス（公開はされません。）

新しいコメントをメールで通知

新しい投稿をメールで受け取る

Δ