public string GetPublicId()
{
if (_otp == null || !YubicoClient.IsOtpValidFormat(_otp))
{
return(null);
}
return(_otp.Substring(0, _otp.Length - 32));
}
protected override bool ValidateUserNameCredential(string userName, string password, out List <Claim> claims)
{
claims = new List <Claim>();
int otpLength = 32 + _config.YubicoSettings.PublicIdLength;
if (password.Length >= otpLength)
{
string otp = password.Substring(password.Length - otpLength, otpLength);
if (YubicoClient.IsOtpValidFormat(otp))
{
string windowsPassword = password.Substring(0, password.Length - otpLength);
List <Claim> windowsClaims;
if (base.ValidateUserNameCredential(userName, windowsPassword, out windowsClaims))
{
using (PrincipalContext context = GetContext(userName, windowsPassword))
{
using (Principal principal = Principal.FindByIdentity(context, userName))
{
using (DirectoryEntry directoryEntry = principal.GetUnderlyingObject() as DirectoryEntry)
{
string publicId = null;
if (directoryEntry.Properties.Contains(_config.YubicoSettings.PublicIdAttributeName))
{
publicId = directoryEntry.Properties[_config.YubicoSettings.PublicIdAttributeName].Value.ToString();
}
if (!string.IsNullOrEmpty(publicId))
{
YubicoClient client = new YubicoClient(_config.YubicoSettings.ClientId, _config.YubicoSettings.APIKey);
client.SetUrls(_apiUrls);
YubicoResponse response = client.Validate(otp);
if (response != null)
{
if (response.GetStatus() == YubicoResponseStatus.OK && response.GetPublicId() == publicId)
{
claims.AddRange(windowsClaims);
return(true);
}
}
}
else
{
LogEntry entry = new LogEntry();
entry.Severity = TraceEventType.Error;
entry.Priority = -1;
if (Logger.ShouldLog(entry))
{
entry.Message = string.Format("Unable to find the user's PublicId. PublicIdAttributeName=\"{0}\".", _config.YubicoSettings.PublicIdAttributeName);
Logger.Write(entry);
}
}
}
}
}
}
}
else
{
LogEntry entry = new LogEntry();
entry.Severity = TraceEventType.Error;
entry.Priority = -1;
if (Logger.ShouldLog(entry))
{
entry.Message = "Invalid OTP Format.";
Logger.Write(entry);
}
}
}
else
{
LogEntry entry = new LogEntry();
entry.Severity = TraceEventType.Error;
entry.Priority = -1;
if (Logger.ShouldLog(entry))
{
entry.Message = "Invalid OTP Length.";
Logger.Write(entry);
}
}
return(false);
}