77 lines
2.7 KiB
Solidity
77 lines
2.7 KiB
Solidity
pragma solidity ^0.4.17;
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import "./common/strings.sol";
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import "./deploy/KillableModel.sol";
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import "./JSONHelper.sol";
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import "./oraclize/oraclizeAPI_0.4.sol";
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import "./common/Controlled.sol";
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import "./management/RegistryIndex.sol";
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/**
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* @title GitHubUserReg.sol
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* Registers GitHub user login to an address
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* @author Ricardo Guilherme Schmidt (Status Research & Development GmbH)]
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*/
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contract UserOracle is KillableModel, Controlled, RegistryIndex, JSONHelper, usingOraclize {
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using strings for string;
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using strings for strings.slice;
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string private cred = "";
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mapping (bytes32 => UserClaim) userClaim; //temporary db for oraclize user register queries
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event RegisterUpdated(string name);
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//stores temporary data for oraclize user register request
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struct UserClaim {
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address sender;
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string login;
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}
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function register(string _githubUser, string _gistId, string _cred) public payable {
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require(watchdog != 0x0);
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if (bytes(_cred).length == 0) {
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_cred = cred;
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}
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bytes32 ocid = oraclize_query("nested", _queryScript(_githubUser, _gistId, _cred));
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userClaim[ocid] = UserClaim({sender: msg.sender, login: _githubUser});
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}
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//oraclize response callback
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function __callback(bytes32 myid, string result, bytes proof) public {
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//OracleEvent(myid, result, proof);
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require(msg.sender == oraclize.cbAddress());
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_register(myid, result);
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}
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function _register(bytes32 myid, string result) internal {
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bytes memory v = bytes(result);
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uint256 pos = 0;
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address addrLoaded;
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string memory login;
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uint256 userId;
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(addrLoaded, pos) = getNextAddr(v, pos);
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(login, pos) = getNextString(v, pos);
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(userId, pos) = getNextUInt(v, pos);
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if (userClaim[myid].sender == addrLoaded && keccak256(userClaim[myid].login) == keccak256(login)) {
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RegisterUpdated(login);
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setRegistry(userId, addrLoaded, login);
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}
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delete userClaim[myid];
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}
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function _queryScript(string _githubUser, string _gistId, string _cred) internal returns (string) {
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strings.slice[] memory cm = new strings.slice[](8);
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cm[0] = strings.toSlice("[identity] ${[URL] https://gist.githubusercontent.com/");
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cm[1] = _githubUser.toSlice();
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cm[2] = strings.toSlice("/");
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cm[3] = _gistId.toSlice();
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cm[4] = strings.toSlice("/raw/register.txt}, ${[URL] json(https://api.github.com/gists/");
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cm[5] = _gistId.toSlice();
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cm[6] = _cred.toSlice();
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cm[7] = strings.toSlice(").owner.[login,id]}");
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return strings.toSlice("").join(cm);
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}
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}
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