Connect to facebook chat using Jabber.net (C # / Mono) with SASL

Question

I am trying to connect to facebook chat using Jabber.net (C # / Mono). The code I use is as follows:

static ManualResetEvent done = new ManualResetEvent(false); const bool VERBOSE = true; const string TARGET = "[e-mail]"; void Start () { JabberClient j = new JabberClient(); j.User = "my_facebook_alias"; //Later to be removed j.Server = "chat.facebook.com"; j.Port = 5222; j.NetworkHost = "chat.facebook.com"; j.AutoStartCompression = true; j.KeepAlive = 30F; j.AutoStartTLS = false; j.AutoStartCompression = true; j.PlaintextAuth = true; j.Password = "my_facebook_password"; //Later to be removed j.RequiresSASL = true; j.LocalCertificate = null; // don't do extra stuff, please. j.AutoPresence = false; j.AutoRoster = true; j.AutoReconnect = -1; j.OnInvalidCertificate += new System.Net.Security.RemoteCertificateValidationCallback(j_OnInvalidCertificate); // listen for errors. Always do this! j.OnError += new bedrock.ExceptionHandler(j_OnError); // what to do when login completes j.OnAuthenticate += new bedrock.ObjectHandler(j_OnAuthenticate); // listen for XMPP wire protocol if (VERBOSE) { j.OnReadText += new bedrock.TextHandler(j_OnReadText); j.OnWriteText += new bedrock.TextHandler(j_OnWriteText); } // Set everything in motion j.Connect(); // wait until sending a message is complete done.WaitOne(); // logout cleanly j.Close(); } static void j_OnWriteText(object sender, string txt) { if (txt == " ") return; // ignore keep-alive spaces Console.WriteLine("SEND: " + txt); } static void j_OnReadText(object sender, string txt) { if (txt == " ") return; // ignore keep-alive spaces Console.WriteLine("RECV: " + txt); } static void j_OnAuthenticate(object sender) { Debug.Log ("OnAuth..."); // Sender is always the JabberClient. JabberClient j = (JabberClient)sender; j.Message(TARGET, "My test message!!!"); // Finished sending. Shut down. done.Set(); } static void j_OnError(object sender, Exception ex) { // There was an error! Console.WriteLine("Error: " + ex.ToString()); Debug.Log ("Error: "+ex.ToString()); // Shut down. done.Set(); } bool j_OnInvalidCertificate(object sender, System.Security.Cryptography.X509Certificates.X509Certificate certificate, System.Security.Cryptography.X509Certificates.X509Chain chain, System.Net.Security.SslPolicyErrors sslPolicyErrors) { Debug.Log("Invalid certificate "+sslPolicyErrors.ToString() +" : "+certificate.ToString(true)); return true; } 

I get j_OnAuthenticate, which is good. And it uses my id / password, because changing the password to something else causes an error. However, I want to use the SASL X-FACEBOOK-PLATFORM mechanism to log in without saving the user ID / password.

Full log:

 RECV: <?xml version="1.0"?><stream:stream id="E34678B6" from="chat.facebook.com" version="1.0" xmlns="jabber:client" xmlns:stream="http://etherx.jabber.org/streams" xml:lang="en"> RECV: <stream:features><starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"/><mechanisms xmlns="urn:ietf:params:xml:ns:xmpp-sasl"><mechanism>X-FACEBOOK-PLATFORM</mechanism><mechanism>DIGEST-MD5</mechanism></mechanisms></stream:features> SEND: <auth mechanism="DIGEST-MD5" xmlns="urn:ietf:params:xml:ns:xmpp-sasl" /> RECV: <challenge xmlns="urn:ietf:params:xml:ns:xmpp-sasl">cmVhbG09ImNoYXQuZmFjZWJvb2suY29tIixub25jZT0iMDBENjAwQ0UyNjZBNzgyMEE5MUIzRDhGNjZDODQ1QjMiLHFvcD0iYXV0aCIsY2hhcnNldD11dGYtOCxhbGdvcml0aG09bWQ1LXNlc3M=</challenge> SEND: <response xmlns="urn:ietf:params:xml:ns:xmpp-sasl">dXNlcm5hbWU9ImpvbmFzMiIscmVhbG09ImNoYXQuZmFjZWJvb2suY29tIixub25jZT0iMDBENjAwQ0UyNjZBNzgyMEE5MUIzRDhGNjZDODQ1QjMiLGNub25jZT0iMzUzMzMyM2E2YTZmNmU2MTczMzIzYTUxNGU1ZjQxNjI0YzM4NjYiLG5jPTAwMDAwMDAxLHFvcD1hdXRoLGRpZ2VzdC11cmk9InhtcHAvY2hhdC5mYWNlYm9vay5jb20iLHJlc3BvbnNlPTcxN2ExNjM0MzdjOWU5MDM2NDcwYjViNTBhOTYxODIxLGNoYXJzZXQ9dXRmLTg=</response> RECV: <challenge xmlns="urn:ietf:params:xml:ns:xmpp-sasl">cnNwYXV0aD1hM2ZlZGM1NGRmYzNmMGEzMTU5Y2EyZDVmMmVkMmE2Zg==</challenge> SEND: <response xmlns="urn:ietf:params:xml:ns:xmpp-sasl" /> RECV: <success xmlns="urn:ietf:params:xml:ns:xmpp-sasl"/> SEND: <stream:stream xmlns:stream="http://etherx.jabber.org/streams" id="10996e3a" xmlns="jabber:client" to="chat.facebook.com" version="1.0"> RECV: <?xml version="1.0"?><stream:stream id="2AF2D483" from="chat.facebook.com" version="1.0" xmlns="jabber:client" xmlns:stream="http://etherx.jabber.org/streams" xml:lang="en"> RECV: <stream:features><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"/><session xmlns="urn:ietf:params:xml:ns:xmpp-session"/></stream:features> SEND: <iq id="JN_1" type="set" to="chat.facebook.com"><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"><resource>Jabber.Net</resource></bind></iq> RECV: <iq id="JN_1" type="result"><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"><jid>[e-mail]/Jabber.Net_c938c6a2_4C7D6EF9DCFDC</jid></bind></iq> SEND: <iq id="JN_2" type="set" to="chat.facebook.com"><session xmlns="urn:ietf:params:xml:ns:xmpp-session" /></iq> RECV: <iq type="result" from="chat.facebook.com" id="JN_2"><session xmlns="urn:ietf:params:xml:ns:xmpp-session"/></iq> OnAuth... SEND: <message id="JN_3" type="chat" to="[e-mail]"><body>My test message!!!</body></message> SEND: <presence type="unavailable"><status>offline</status></presence> SEND: </stream:stream> SEND: <iq id="JN_4" type="get"><query xmlns="jabber:iq:roster" /></iq> : ietf: params: xml: ns: xmpp-sasl"> cmVhbG09ImNoYXQuZmFjZWJvb2suY29tIixub25jZT0iMDBENjAwQ0UyNjZBNzgyMEE5MUIzRDhGNjZDODQ1QjMiLHFvcD0iYXV0aCIsY2hhcnNldD11dGYtOCxhbGdvcml0aG09bWQ1LXNlc3M = </ challenge> RECV: <?xml version="1.0"?><stream:stream id="E34678B6" from="chat.facebook.com" version="1.0" xmlns="jabber:client" xmlns:stream="http://etherx.jabber.org/streams" xml:lang="en"> RECV: <stream:features><starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"/><mechanisms xmlns="urn:ietf:params:xml:ns:xmpp-sasl"><mechanism>X-FACEBOOK-PLATFORM</mechanism><mechanism>DIGEST-MD5</mechanism></mechanisms></stream:features> SEND: <auth mechanism="DIGEST-MD5" xmlns="urn:ietf:params:xml:ns:xmpp-sasl" /> RECV: <challenge xmlns="urn:ietf:params:xml:ns:xmpp-sasl">cmVhbG09ImNoYXQuZmFjZWJvb2suY29tIixub25jZT0iMDBENjAwQ0UyNjZBNzgyMEE5MUIzRDhGNjZDODQ1QjMiLHFvcD0iYXV0aCIsY2hhcnNldD11dGYtOCxhbGdvcml0aG09bWQ1LXNlc3M=</challenge> SEND: <response xmlns="urn:ietf:params:xml:ns:xmpp-sasl">dXNlcm5hbWU9ImpvbmFzMiIscmVhbG09ImNoYXQuZmFjZWJvb2suY29tIixub25jZT0iMDBENjAwQ0UyNjZBNzgyMEE5MUIzRDhGNjZDODQ1QjMiLGNub25jZT0iMzUzMzMyM2E2YTZmNmU2MTczMzIzYTUxNGU1ZjQxNjI0YzM4NjYiLG5jPTAwMDAwMDAxLHFvcD1hdXRoLGRpZ2VzdC11cmk9InhtcHAvY2hhdC5mYWNlYm9vay5jb20iLHJlc3BvbnNlPTcxN2ExNjM0MzdjOWU5MDM2NDcwYjViNTBhOTYxODIxLGNoYXJzZXQ9dXRmLTg=</response> RECV: <challenge xmlns="urn:ietf:params:xml:ns:xmpp-sasl">cnNwYXV0aD1hM2ZlZGM1NGRmYzNmMGEzMTU5Y2EyZDVmMmVkMmE2Zg==</challenge> SEND: <response xmlns="urn:ietf:params:xml:ns:xmpp-sasl" /> RECV: <success xmlns="urn:ietf:params:xml:ns:xmpp-sasl"/> SEND: <stream:stream xmlns:stream="http://etherx.jabber.org/streams" id="10996e3a" xmlns="jabber:client" to="chat.facebook.com" version="1.0"> RECV: <?xml version="1.0"?><stream:stream id="2AF2D483" from="chat.facebook.com" version="1.0" xmlns="jabber:client" xmlns:stream="http://etherx.jabber.org/streams" xml:lang="en"> RECV: <stream:features><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"/><session xmlns="urn:ietf:params:xml:ns:xmpp-session"/></stream:features> SEND: <iq id="JN_1" type="set" to="chat.facebook.com"><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"><resource>Jabber.Net</resource></bind></iq> RECV: <iq id="JN_1" type="result"><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"><jid>[e-mail]/Jabber.Net_c938c6a2_4C7D6EF9DCFDC</jid></bind></iq> SEND: <iq id="JN_2" type="set" to="chat.facebook.com"><session xmlns="urn:ietf:params:xml:ns:xmpp-session" /></iq> RECV: <iq type="result" from="chat.facebook.com" id="JN_2"><session xmlns="urn:ietf:params:xml:ns:xmpp-session"/></iq> OnAuth... SEND: <message id="JN_3" type="chat" to="[e-mail]"><body>My test message!!!</body></message> SEND: <presence type="unavailable"><status>offline</status></presence> SEND: </stream:stream> SEND: <iq id="JN_4" type="get"><query xmlns="jabber:iq:roster" /></iq> : ietf: params: xml: ns: xmpp-sasl"> dXNlcm5hbWU9ImpvbmFzMiIscmVhbG09ImNoYXQuZmFjZWJvb2suY29tIixub25jZT0iMDBENjAwQ0UyNjZBNzgyMEE5MUIzRDhGNjZDODQ1QjMiLGNub25jZT0iMzUzMzMyM2E2YTZmNmU2MTczMzIzYTUxNGU1ZjQxNjI0YzM4NjYiLG5jPTAwMDAwMDAxLHFvcD1hdXRoLGRpZ2VzdC11cmk9InhtcHAvY2hhdC5mYWNlYm9vay5jb20iLHJlc3BvbnNlPTcxN2ExNjM0MzdjOWU5MDM2NDcwYjViNTBhOTYxODIxLGNoYXJzZXQ9dXRmLTg = </ response> RECV: <?xml version="1.0"?><stream:stream id="E34678B6" from="chat.facebook.com" version="1.0" xmlns="jabber:client" xmlns:stream="http://etherx.jabber.org/streams" xml:lang="en"> RECV: <stream:features><starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"/><mechanisms xmlns="urn:ietf:params:xml:ns:xmpp-sasl"><mechanism>X-FACEBOOK-PLATFORM</mechanism><mechanism>DIGEST-MD5</mechanism></mechanisms></stream:features> SEND: <auth mechanism="DIGEST-MD5" xmlns="urn:ietf:params:xml:ns:xmpp-sasl" /> RECV: <challenge xmlns="urn:ietf:params:xml:ns:xmpp-sasl">cmVhbG09ImNoYXQuZmFjZWJvb2suY29tIixub25jZT0iMDBENjAwQ0UyNjZBNzgyMEE5MUIzRDhGNjZDODQ1QjMiLHFvcD0iYXV0aCIsY2hhcnNldD11dGYtOCxhbGdvcml0aG09bWQ1LXNlc3M=</challenge> SEND: <response xmlns="urn:ietf:params:xml:ns:xmpp-sasl">dXNlcm5hbWU9ImpvbmFzMiIscmVhbG09ImNoYXQuZmFjZWJvb2suY29tIixub25jZT0iMDBENjAwQ0UyNjZBNzgyMEE5MUIzRDhGNjZDODQ1QjMiLGNub25jZT0iMzUzMzMyM2E2YTZmNmU2MTczMzIzYTUxNGU1ZjQxNjI0YzM4NjYiLG5jPTAwMDAwMDAxLHFvcD1hdXRoLGRpZ2VzdC11cmk9InhtcHAvY2hhdC5mYWNlYm9vay5jb20iLHJlc3BvbnNlPTcxN2ExNjM0MzdjOWU5MDM2NDcwYjViNTBhOTYxODIxLGNoYXJzZXQ9dXRmLTg=</response> RECV: <challenge xmlns="urn:ietf:params:xml:ns:xmpp-sasl">cnNwYXV0aD1hM2ZlZGM1NGRmYzNmMGEzMTU5Y2EyZDVmMmVkMmE2Zg==</challenge> SEND: <response xmlns="urn:ietf:params:xml:ns:xmpp-sasl" /> RECV: <success xmlns="urn:ietf:params:xml:ns:xmpp-sasl"/> SEND: <stream:stream xmlns:stream="http://etherx.jabber.org/streams" id="10996e3a" xmlns="jabber:client" to="chat.facebook.com" version="1.0"> RECV: <?xml version="1.0"?><stream:stream id="2AF2D483" from="chat.facebook.com" version="1.0" xmlns="jabber:client" xmlns:stream="http://etherx.jabber.org/streams" xml:lang="en"> RECV: <stream:features><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"/><session xmlns="urn:ietf:params:xml:ns:xmpp-session"/></stream:features> SEND: <iq id="JN_1" type="set" to="chat.facebook.com"><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"><resource>Jabber.Net</resource></bind></iq> RECV: <iq id="JN_1" type="result"><bind xmlns="urn:ietf:params:xml:ns:xmpp-bind"><jid>[e-mail]/Jabber.Net_c938c6a2_4C7D6EF9DCFDC</jid></bind></iq> SEND: <iq id="JN_2" type="set" to="chat.facebook.com"><session xmlns="urn:ietf:params:xml:ns:xmpp-session" /></iq> RECV: <iq type="result" from="chat.facebook.com" id="JN_2"><session xmlns="urn:ietf:params:xml:ns:xmpp-session"/></iq> OnAuth... SEND: <message id="JN_3" type="chat" to="[e-mail]"><body>My test message!!!</body></message> SEND: <presence type="unavailable"><status>offline</status></presence> SEND: </stream:stream> SEND: <iq id="JN_4" type="get"><query xmlns="jabber:iq:roster" /></iq> 

MatriX XMPP has a OnBeforeSasl delegate, where a custom method can configure the necessary Sasl properties on facebook (for example, the Facebook application identifier, application secret and access token). But in Jabber.net there is no such delegate!

Is there any support for SASL I'm Jabber.net? Or how do you configure it?

Answer 1

There is SASL support in jabber-net, but there is no support for the SASL X-FACEBOOK-PLATFORM mechanism. If you want to use this mechanism, you need to extend jabber-net by adding this SASL mechanism.

Facebook closes the XMPP connection. This may be due to a message sent in an Authenticate event. Try sending your message after jabber-net sends your initial presence or after you receive your list.

Alex