/// <summary>
/// Authenticates a SIP request.
/// </summary>
public static SIPRequestAuthenticationResult AuthenticateSIPRequest(SIPEndPoint localSIPEndPoint, SIPEndPoint remoteEndPoint, SIPRequest sipRequest, SIPAccount sipAccount, SIPMonitorLogDelegate logSIPMonitorEvent)
{
try
{
if (sipAccount == null)
{
return(new SIPRequestAuthenticationResult(SIPResponseStatusCodesEnum.Forbidden, null));
}
else if (sipAccount.IsDisabled)
{
logSIPMonitorEvent?.Invoke(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Authoriser, SIPMonitorEventTypesEnum.DialPlan, "SIP account " + sipAccount.SIPUsername + "@" + sipAccount.SIPDomain + " is disabled for " + sipRequest.Method + ".", sipAccount.Owner));
return(new SIPRequestAuthenticationResult(SIPResponseStatusCodesEnum.Forbidden, null));
}
else
{
SIPAuthenticationHeader reqAuthHeader = sipRequest.Header.AuthenticationHeader;
if (reqAuthHeader == null)
{
// Check for IP address authentication.
if (!sipAccount.IPAddressACL.IsNullOrBlank())
{
SIPEndPoint uaEndPoint = (!sipRequest.Header.ProxyReceivedFrom.IsNullOrBlank()) ? SIPEndPoint.ParseSIPEndPoint(sipRequest.Header.ProxyReceivedFrom) : remoteEndPoint;
if (Regex.Match(uaEndPoint.GetIPEndPoint().ToString(), sipAccount.IPAddressACL).Success)
{
// Successfully authenticated
return(new SIPRequestAuthenticationResult(true, true));
}
}
SIPAuthenticationHeader authHeader = new SIPAuthenticationHeader(SIPAuthorisationHeadersEnum.WWWAuthenticate, sipAccount.SIPDomain, GetNonce());
return(new SIPRequestAuthenticationResult(SIPResponseStatusCodesEnum.Unauthorised, authHeader));
}
else
{
return(new SIPRequestAuthenticationResult(true, false));
//// Check for IP address authentication.
//if (!sipAccount.IPAddressACL.IsNullOrBlank())
//{
// SIPEndPoint uaEndPoint = (!sipRequest.Header.ProxyReceivedFrom.IsNullOrBlank()) ? SIPEndPoint.ParseSIPEndPoint(sipRequest.Header.ProxyReceivedFrom) : remoteEndPoint;
// if (Regex.Match(uaEndPoint.GetIPEndPoint().ToString(), sipAccount.IPAddressACL).Success)
// {
// // Successfully authenticated
// return new SIPRequestAuthenticationResult(true, true);
// }
//}
//string requestNonce = reqAuthHeader.SIPDigest.Nonce;
//string uri = reqAuthHeader.SIPDigest.URI;
//string response = reqAuthHeader.SIPDigest.Response;
//// Check for stale nonces.
//if (IsNonceStale(requestNonce))
//{
// if (logSIPMonitorEvent != null)
// {
// logSIPMonitorEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Authoriser, SIPMonitorEventTypesEnum.Warn, "Authentication failed stale nonce for realm=" + sipAccount.SIPDomain + ", username="******", uri=" + uri + ", nonce=" + requestNonce + ", method=" + sipRequest.Method + ".", null));
// }
// SIPAuthenticationHeader authHeader = new SIPAuthenticationHeader(SIPAuthorisationHeadersEnum.WWWAuthenticate, sipAccount.SIPDomain, GetNonce());
// return new SIPRequestAuthenticationResult(SIPResponseStatusCodesEnum.Unauthorised, authHeader);
//}
//else
//{
// SIPAuthorisationDigest checkAuthReq = reqAuthHeader.SIPDigest;
// checkAuthReq.SetCredentials(sipAccount.SIPUsername, sipAccount.SIPPassword, uri, sipRequest.Method.ToString());
// string digest = checkAuthReq.Digest;
// if (digest == response)
// {
// // Successfully authenticated
// return new SIPRequestAuthenticationResult(true, false);
// }
// else
// {
// if (logSIPMonitorEvent != null)
// {
// logSIPMonitorEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Authoriser, SIPMonitorEventTypesEnum.Warn, "Authentication token check failed for realm=" + sipAccount.SIPDomain + ", username="******", uri=" + uri + ", nonce=" + requestNonce + ", method=" + sipRequest.Method + ".", sipAccount.Owner));
// }
// SIPAuthenticationHeader authHeader = new SIPAuthenticationHeader(SIPAuthorisationHeadersEnum.WWWAuthenticate, sipAccount.SIPDomain, GetNonce());
// return new SIPRequestAuthenticationResult(SIPResponseStatusCodesEnum.Unauthorised, authHeader);
// }
//}
}
}
}
catch (Exception excp)
{
logSIPMonitorEvent?.Invoke(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.Authoriser, SIPMonitorEventTypesEnum.Error, "Exception AuthoriseSIPRequest. " + excp.Message, null));
return(new SIPRequestAuthenticationResult(SIPResponseStatusCodesEnum.InternalServerError, null));
}
}
