public ManualResetEvent DelayMRE; // If the call needs to be delayed DelaySeconds this MRE will be used.
/// <summary>
///
/// </summary>
/// <param name="toSIPAccount"></param>
/// <param name="uri">The uri can be different to the to SIP account if a dotted notation is used. For
/// example [email protected].</param>
/// <param name="fromHeader"></param>
/// <param name="contentType"></param>
/// <param name="content"></param>
public SIPCallDescriptor(SIPAccount toSIPAccount, string uri, string fromHeader, string contentType, string content)
{
ToSIPAccount = toSIPAccount;
Uri = uri ?? toSIPAccount.SIPUsername + "@" + toSIPAccount.SIPDomain;
From = fromHeader;
ContentType = contentType;
Content = content;
}
public bool LoadSIPAccountForIncomingCall()
{
try
{
bool loaded = false;
if (GetSIPAccount_External == null)
{
// No point trying to authenticate if we haven't been given a delegate to load the SIP account.
Reject(SIPResponseStatusCodesEnum.InternalServerError, null, null);
}
else
{
m_sipAccount = GetSIPAccount_External(s => s.SIPUsername == m_sipUsername && s.SIPDomain == m_sipDomain);
if (m_sipAccount == null)
{
// A full lookup failed. Now try a partial lookup if the incoming username is in a dotted domain name format.
if (m_sipUsername.Contains("."))
{
string sipUsernameSuffix = m_sipUsername.Substring(m_sipUsername.LastIndexOf(".") + 1);
m_sipAccount = GetSIPAccount_External(s => s.SIPUsername == sipUsernameSuffix && s.SIPDomain == m_sipDomain);
}
if (m_sipAccount == null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Rejecting public call for " + m_sipUsername + "@" + m_sipDomain + ", SIP account not found.", null));
Reject(SIPResponseStatusCodesEnum.NotFound, null, null);
}
else
{
loaded = true;
}
}
else
{
loaded = true;
}
}
if (loaded)
{
SetOwner(m_sipAccount.Owner, m_sipAccount.AdminMemberId);
}
return(loaded);
}
catch (Exception excp)
{
logger.Error("Exception LoadSIPAccountForIncomingCall. " + excp.Message);
Reject(SIPResponseStatusCodesEnum.InternalServerError, null, null);
return(false);
}
}
/// <summary></summary>
/// <param name="uacRecvdEndPoint">If this is non-null it indicates the contact header should be mangled based on the public socket the register request was demmed
/// to have originated from rather then relying on the contact value recieved from the uac.</param>
public SIPRegistrarBinding(
SIPAccount sipAccount,
SIPURI bindingURI,
string callId,
int cseq,
string userAgent,
SIPEndPoint remoteSIPEndPoint,
SIPEndPoint proxySIPEndPoint,
SIPEndPoint registrarSIPEndPoint,
int expiry)
{
Id = Guid.NewGuid();
LastUpdate = DateTime.UtcNow;
SIPAccountId = sipAccount.Id;
SIPAccountName = sipAccount.SIPUsername + "@" + sipAccount.SIPDomain;
Owner = sipAccount.Owner;
AdminMemberId = sipAccount.AdminMemberId;
m_contactURI = bindingURI.CopyOf();
m_mangledContactURI = m_contactURI.CopyOf();
CallId = callId;
CSeq = cseq;
UserAgent = userAgent;
RemoteSIPEndPoint = remoteSIPEndPoint;
m_proxySIPEndPoint = proxySIPEndPoint;
m_registrarSIPEndPoint = registrarSIPEndPoint;
//if (SIPTransport.IsPrivateAddress(sipRequest.Header.Contact[0].ContactURI.Host) && m_mangleUACContact)
if (!sipAccount.DontMangleEnabled && Regex.Match(m_mangledContactURI.Host, @"(\d+\.){3}\d+").Success)
{
// The Contact URI Host is used by registrars as the contact socket for the user so it needs to be changed to reflect the socket
// the intial request was received on in order to work around NAT. It's no good just relying on private addresses as a lot of User Agents
// determine their public IP but NOT their public port so they send the wrong port in the Contact header.
//logger.Debug("Mangling contact header from " + m_mangledContactURI.Host + " to " + IPSocket.GetSocketString(uacRecvdEndPoint) + ".");
m_mangledContactURI.Host = remoteSIPEndPoint.GetIPEndPoint().ToString();
}
m_expiry = expiry;
}
public bool AuthenticateCall()
{
m_isAuthenticated = false;
try
{
if (SIPAuthenticateRequest_External == null)
{
// No point trying to authenticate if we haven't been given an authentication delegate.
Reject(SIPResponseStatusCodesEnum.InternalServerError, null, null);
}
else if (GetSIPAccount_External == null)
{
// No point trying to authenticate if we haven't been given a delegate to load the SIP account.
Reject(SIPResponseStatusCodesEnum.InternalServerError, null, null);
}
else
{
m_sipAccount = GetSIPAccount_External(s => s.SIPUsername == m_sipUsername && s.SIPDomain == m_sipDomain);
if (m_sipAccount == null)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Rejecting authentication required call for " + m_sipUsername + "@" + m_sipDomain + ", SIP account not found.", null));
Reject(SIPResponseStatusCodesEnum.Forbidden, null, null);
}
else
{
SIPRequest sipRequest = m_uasTransaction.TransactionRequest;
SIPEndPoint localSIPEndPoint = (!sipRequest.Header.ProxyReceivedOn.IsNullOrBlank()) ? SIPEndPoint.ParseSIPEndPoint(sipRequest.Header.ProxyReceivedOn) : sipRequest.LocalSIPEndPoint;
SIPEndPoint remoteEndPoint = (!sipRequest.Header.ProxyReceivedFrom.IsNullOrBlank()) ? SIPEndPoint.ParseSIPEndPoint(sipRequest.Header.ProxyReceivedFrom) : sipRequest.RemoteSIPEndPoint;
SIPRequestAuthenticationResult authenticationResult = SIPAuthenticateRequest_External(localSIPEndPoint, remoteEndPoint, sipRequest, m_sipAccount, Log_External);
if (authenticationResult.Authenticated)
{
if (authenticationResult.WasAuthenticatedByIP)
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "New call from " + remoteEndPoint.ToString() + " successfully authenticated by IP address.", m_sipAccount.Owner));
}
else
{
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "New call from " + remoteEndPoint.ToString() + " successfully authenticated by digest.", m_sipAccount.Owner));
}
SetOwner(m_sipAccount.Owner, m_sipAccount.AdminMemberId);
m_isAuthenticated = true;
}
else
{
// Send authorisation failure or required response
SIPResponse authReqdResponse = SIPTransport.GetResponse(sipRequest, authenticationResult.ErrorResponse, null);
authReqdResponse.Header.AuthenticationHeader = authenticationResult.AuthenticationRequiredHeader;
Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "Call not authenticated for " + m_sipUsername + "@" + m_sipDomain + ", responding with " + authenticationResult.ErrorResponse + ".", null));
m_uasTransaction.SendFinalResponse(authReqdResponse);
}
}
}
}
catch (Exception excp)
{
logger.Error("Exception SIPServerUserAgent AuthenticateCall. " + excp.Message);
Reject(SIPResponseStatusCodesEnum.InternalServerError, null, null);
}
return(m_isAuthenticated);
}
/// <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));
}
}