protected override void BuildNormalResponse()
{
//string checkSumStr = _result.Nick + _result.UniqueNick + _result.NamespaceID;
//_session.UserData.SessionKey = _crc.ComputeChecksum(checkSumStr);
ChallengeProofData proofData = new ChallengeProofData(
_request.UserData,
_request.LoginType,
_request.PartnerID,
ChallengeProofData.ServerChallenge,
_request.UserChallenge,
_result.PasswordHash);
string responseProof =
ChallengeProof.GenerateProof(proofData);
_sendingBuffer = @"\lc\2\sesskey\" + UserData.SessionKey;
_sendingBuffer += @"\proof\" + responseProof;
_sendingBuffer += @"\userid\" + _result.UserID;
_sendingBuffer += @"\profileid\" + _result.ProfileID;
if (_request.LoginType != LoginType.NickEmail)
{
_sendingBuffer += @"\uniquenick\" + _result.UniqueNick;
}
_sendingBuffer += $@"\lt\{UserData.LoginTicket}";
_sendingBuffer += $@"\id\{_request.OperationID}\final\";
_session.UserData.LoginStatus = LoginStatus.Completed;
}
protected bool IsChallengeCorrect()
{
ChallengeProofData proofData = new ChallengeProofData(
_request.UserData,
_request.LoginType,
_request.PartnerID,
_request.UserChallenge,
ChallengeProofData.ServerChallenge,
_result.PasswordHash);
string response = ChallengeProof.GenerateProof(proofData);
if (_request.Response == response)
{
return(true);
}
return(false);
}
/// <summary>
/// Generates an MD5 hash, which is used to verify the sessions login information
/// </summary>
/// <returns>
/// The proof verification MD5 hash string that can be compared to what the _session sends,
/// to verify that the users entered password matches the specific user data in the database.
/// </returns>
public static string GenerateProof(ChallengeProofData data)
{
string tempUserData = data.UserData;
// Auth token does not have partnerid append.
if (data.PartnerID != (uint)PartnerID.Gamespy && data.LoginType != LoginType.AuthToken)
{
tempUserData = $@"{data.PartnerID}@{data.UserData}";
}
// Generate our response string
StringBuilder responseString = new StringBuilder(data.PasswordHash);
responseString.Append(' ', 48); // 48 spaces
responseString.Append(tempUserData);
responseString.Append(data.Challenge1);
responseString.Append(data.Challenge2);
responseString.Append(data.PasswordHash);
string hashString = responseString.ToString().GetMD5Hash();
return(hashString);
}
