Add GitHubRegisterEth

contracts/GitHubRegisterEth.sol

@@ -0,0 +1,160 @@
+//For more information contact Ricardo Guilherme Schmidt <3esmit@gmail.com>
+pragma solidity ^0.4.11;
+
+import "OraclizeAPI.sol";
+import "Owned.sol";
+
+contract GitHubRegisterEth is Owned, usingOraclize{
+    string private credentials = "";
+    mapping (bytes32 => UserClaim) userClaim; //temporary db for oraclize user register queries
+    mapping (bytes32 => uint256) indexes;
+    mapping (uint256 => User) users;
+
+    event RegisterUpdated(string name);
+
+    //stores temporary data for oraclize user register request
+    struct UserClaim {
+        address sender;
+        string login;
+    }
+
+    struct User {
+        address addr; 
+        string login; 
+    }
+
+    function GitHubRegisterEth(){
+        oraclize_setProof(proofType_TLSNotary | proofStorage_IPFS);
+    }
+
+    function register(string _github_user, string _gistid) payable {
+        bytes32 ocid = oraclize_query("nested", _getQuery(_github_user, _gistid));
+        userClaim[ocid] = UserClaim({sender: msg.sender, login: _github_user});
+    }
+
+    function getAddr(uint256 _id) public constant returns(address addr) {
+        return users[_id].addr;
+    }
+
+     function getName(address _addr) public constant returns(string name){
+        return users[indexes[sha3(_addr)]].login;
+    } 
+
+    function getAddr(string _name) public constant returns(address addr) {
+        return users[indexes[sha3(_name)]].addr;
+    }
+
+    event OracleEvent(bytes32 myid, string result, bytes proof);
+
+    //oraclize response callback
+    function __callback(bytes32 myid, string result, bytes proof) {
+        OracleEvent(myid,result,proof);
+        if (msg.sender != oraclize.cbAddress()){
+          throw;  
+        }else {
+            _register(myid, result);
+        }
+    }
+
+    function _register(bytes32 myid, string result) internal {
+        bytes memory v = bytes(result);
+        uint8 pos = 0;
+        address addrLoaded; 
+        string memory login; 
+        uint256 userId; 
+        (addrLoaded,pos) = getNextAddr(v,pos);
+        (login,pos) = getNextString(v,pos);
+        (userId,pos) = getNextUInt(v,pos);
+        if(userClaim[myid].sender == addrLoaded && sha3(userClaim[myid].login) == sha3(login)){
+            RegisterUpdated(login);
+            if(users[userId].addr != 0x0){
+                delete indexes[sha3(users[userId].login)];
+                delete indexes[sha3(users[userId].addr)];
+            }
+            indexes[sha3(addrLoaded)] = userId;
+            indexes[sha3(login)] = userId;
+            users[userId].addr = addrLoaded;
+            users[userId].login = login;
+        }
+        delete userClaim[myid]; //should always be deleted
+    }
+
+    //owner management
+    function setAPICredentials(string _client_id, string _client_secret) only_owner {
+         credentials = strConcat("?client_id=",_client_id,"&client_secret=",_client_secret,"");
+    }
+
+    function clearAPICredentials() only_owner {
+         credentials = "";
+    }
+
+    //internal helper functions
+    function _getQuery(string _github_user, string _gistid) internal constant returns (string){
+        string memory a = strConcat("[identity] ${[URL] https://gist.githubusercontent.com/", _github_user,"/",_gistid,"/raw/registereth.txt}, ${[URL] json(https://api.github.com/gists/"); 
+        return strConcat(a, _gistid, credentials, ").owner.[login,id]}","");
+    }
+
+    function getNextString(bytes _str, uint8 _pos) internal constant returns (string,uint8) {
+        uint8 start = 0;
+        uint8 end = 0;
+        uint strl =_str.length;
+        for (;strl > _pos; _pos++) {
+            if (_str[_pos] == '"'){ //Found quotation mark
+                if(_str[_pos-1] != '\\'){ //is not escaped
+	                end = start == 0 ? 0: _pos;
+	                start = start == 0 ? (_pos+1) : start;
+	                if(end > 0) break; 
+                }
+            }
+        }
+    	bytes memory str = new bytes(end-start);
+        for(_pos=0; _pos<str.length; _pos++){
+            str[_pos] = _str[start+_pos];
+        }
+        for(_pos=end+1; _pos<_str.length; _pos++) if (_str[_pos] == ','){ _pos++; break; } //end
+
+        return (string(str),_pos);
+	}
+
+    function getNextUInt(bytes _str, uint8 _pos) internal constant returns (uint,uint8) {
+        uint val = 0;
+        uint strl =_str.length;
+        for (; strl > _pos; _pos++) {
+            byte bp = _str[_pos];
+            if (bp == ','){ //Find ends
+                _pos++; break;
+            }else if ((bp >= 48)&&(bp <= 57)){ //only ASCII numbers
+                val *= 10;
+                val += uint(bp) - 48;
+            }
+        }
+        return (val,_pos);
+    }
+
+    function getNextAddr(bytes _str, uint8 _pos) internal constant returns (address, uint8){
+        uint160 iaddr = 0;
+        uint strl =_str.length;
+        for(;strl > _pos; _pos++){
+            byte bp = _str[_pos];
+             if (bp == '0'){ 
+                if (_str[_pos+1] == 'x'){
+                    for (_pos=_pos+2; _pos<2+2*20; _pos+=2){
+                        iaddr *= 256;
+                        iaddr += (uint160(hexVal(uint160(_str[_pos])))*16+uint160(hexVal(uint160(_str[_pos+1]))));
+                    }
+                    _pos++; 
+                    break;
+                }
+            }else if (bp == ','){ 
+                _pos++; 
+                break; 
+            } 
+        }
+        return (address(iaddr),_pos);
+    }
+
+    function hexVal(uint val) internal constant returns (uint){
+		return val - (val < 58 ? 48 : (val < 97 ? 55 : 87));
+    }
+
+}

contracts/Owned.sol

@@ -0,0 +1,21 @@
+pragma solidity ^0.4.8;
+
+contract Owned {
+    address public owner= msg.sender;
+    event NewOwner(address owner);
+
+    function Owned(){
+        NewOwner(owner);
+    }
+
+    modifier only_owner {
+        if (msg.sender != owner) throw;
+        _;
+    }
+
+    function setOwner(address _owner)
+     only_owner {
+        owner = _owner;
+        NewOwner(_owner);
+    }
+}