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source: protocols/msn/ns.c @ 064e47c

Last change on this file since 064e47c was e6648bf, checked in by Wilmer van der Gaast <wilmer@…>, at 2008-02-17T11:16:01Z
Replaced old MSN Passport (v1.4) authentication code with what's described on http://msnpiki.msnfanatic.com/index.php/MSNP13:SOAPTweener . This was an attempt to fix bug #360, but it didn't. However, this change may make BitlBee a little bit more future-proof. Plus, the code is tidier and sometimes faster than the old mechanism.
Property mode set to `100644`
File size: 16.6 KB

Line
1	/********************************************************************\
2	* BitlBee -- An IRC to other IM-networks gateway *
3	* *
4	* Copyright 2002-2004 Wilmer van der Gaast and others *
5	\********************************************************************/
6
7	/* MSN module - Notification server callbacks */
8
9	/*
10	This program is free software; you can redistribute it and/or modify
11	it under the terms of the GNU General Public License as published by
12	the Free Software Foundation; either version 2 of the License, or
13	(at your option) any later version.
14
15	This program is distributed in the hope that it will be useful,
16	but WITHOUT ANY WARRANTY; without even the implied warranty of
17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18	GNU General Public License for more details.
19
20	You should have received a copy of the GNU General Public License with
21	the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
22	if not, write to the Free Software Foundation, Inc., 59 Temple Place,
23	Suite 330, Boston, MA 02111-1307 USA
24	*/
25
26	#include <ctype.h>
27	#include "nogaim.h"
28	#include "msn.h"
29	#include "passport.h"
30	#include "md5.h"
31
32	static gboolean msn_ns_callback( gpointer data, gint source, b_input_condition cond );
33	static int msn_ns_command( gpointer data, char **cmd, int num_parts );
34	static int msn_ns_message( gpointer data, char msg, int msglen, char *cmd, int num_parts );
35
36	static void msn_auth_got_passport_token( struct msn_auth_data *mad );
37
38	gboolean msn_ns_connected( gpointer data, gint source, b_input_condition cond )
39	{
40	struct im_connection *ic = data;
41	struct msn_data *md;
42	char s[1024];
43
44	if( !g_slist_find( msn_connections, ic ) )
45	return FALSE;
46
47	if( source == -1 )
48	{
49	imcb_error( ic, "Could not connect to server" );
50	imc_logout( ic, TRUE );
51	return FALSE;
52	}
53
54	md = ic->proto_data;
55
56	if( !md->handler )
57	{
58	md->handler = g_new0( struct msn_handler_data, 1 );
59	md->handler->data = ic;
60	md->handler->exec_command = msn_ns_command;
61	md->handler->exec_message = msn_ns_message;
62	}
63	else
64	{
65	if( md->handler->rxq )
66	g_free( md->handler->rxq );
67
68	md->handler->rxlen = 0;
69	}
70
71	md->handler->fd = md->fd;
72	md->handler->rxq = g_new0( char, 1 );
73
74	g_snprintf( s, sizeof( s ), "VER %d MSNP8 CVR0\r\n", ++md->trId );
75	if( msn_write( ic, s, strlen( s ) ) )
76	{
77	ic->inpa = b_input_add( md->fd, GAIM_INPUT_READ, msn_ns_callback, ic );
78	imcb_log( ic, "Connected to server, waiting for reply" );
79	}
80
81	return FALSE;
82	}
83
84	static gboolean msn_ns_callback( gpointer data, gint source, b_input_condition cond )
85	{
86	struct im_connection *ic = data;
87	struct msn_data *md = ic->proto_data;
88
89	if( msn_handler( md->handler ) == -1 ) /* Don't do this on ret == 0, it's already done then. */
90	{
91	imcb_error( ic, "Error while reading from server" );
92	imc_logout( ic, TRUE );
93
94	return FALSE;
95	}
96	else
97	return TRUE;
98	}
99
100	static int msn_ns_command( gpointer data, char **cmd, int num_parts )
101	{
102	struct im_connection *ic = data;
103	struct msn_data *md = ic->proto_data;
104	char buf[1024];
105
106	if( num_parts == 0 )
107	{
108	/* Hrrm... Empty command...? Ignore? */
109	return( 1 );
110	}
111
112	if( strcmp( cmd[0], "VER" ) == 0 )
113	{
114	if( cmd[2] && strncmp( cmd[2], "MSNP8", 5 ) != 0 )
115	{
116	imcb_error( ic, "Unsupported protocol" );
117	imc_logout( ic, FALSE );
118	return( 0 );
119	}
120
121	g_snprintf( buf, sizeof( buf ), "CVR %d 0x0409 mac 10.2.0 ppc macmsgs 3.5.1 macmsgs %s\r\n",
122	++md->trId, ic->acc->user );
123	return( msn_write( ic, buf, strlen( buf ) ) );
124	}
125	else if( strcmp( cmd[0], "CVR" ) == 0 )
126	{
127	/* We don't give a damn about the information we just received */
128	g_snprintf( buf, sizeof( buf ), "USR %d TWN I %s\r\n", ++md->trId, ic->acc->user );
129	return( msn_write( ic, buf, strlen( buf ) ) );
130	}
131	else if( strcmp( cmd[0], "XFR" ) == 0 )
132	{
133	char *server;
134	int port;
135
136	if( num_parts == 6 && strcmp( cmd[2], "NS" ) == 0 )
137	{
138	b_event_remove( ic->inpa );
139	ic->inpa = 0;
140	closesocket( md->fd );
141
142	server = strchr( cmd[3], ':' );
143	if( !server )
144	{
145	imcb_error( ic, "Syntax error" );
146	imc_logout( ic, TRUE );
147	return( 0 );
148	}
149	*server = 0;
150	port = atoi( server + 1 );
151	server = cmd[3];
152
153	imcb_log( ic, "Transferring to other server" );
154
155	md->fd = proxy_connect( server, port, msn_ns_connected, ic );
156	}
157	else if( num_parts == 6 && strcmp( cmd[2], "SB" ) == 0 )
158	{
159	struct msn_switchboard *sb;
160
161	server = strchr( cmd[3], ':' );
162	if( !server )
163	{
164	imcb_error( ic, "Syntax error" );
165	imc_logout( ic, TRUE );
166	return( 0 );
167	}
168	*server = 0;
169	port = atoi( server + 1 );
170	server = cmd[3];
171
172	if( strcmp( cmd[4], "CKI" ) != 0 )
173	{
174	imcb_error( ic, "Unknown authentication method for switchboard" );
175	imc_logout( ic, TRUE );
176	return( 0 );
177	}
178
179	debug( "Connecting to a new switchboard with key %s", cmd[5] );
180	sb = msn_sb_create( ic, server, port, cmd[5], MSN_SB_NEW );
181
182	if( md->msgq )
183	{
184	struct msn_message *m = md->msgq->data;
185	GSList *l;
186
187	sb->who = g_strdup( m->who );
188
189	/* Move all the messages to the first user in the message
190	queue to the switchboard message queue. */
191	l = md->msgq;
192	while( l )
193	{
194	m = l->data;
195	l = l->next;
196	if( strcmp( m->who, sb->who ) == 0 )
197	{
198	sb->msgq = g_slist_append( sb->msgq, m );
199	md->msgq = g_slist_remove( md->msgq, m );
200	}
201	}
202	}
203	}
204	else
205	{
206	imcb_error( ic, "Syntax error" );
207	imc_logout( ic, TRUE );
208	return( 0 );
209	}
210	}
211	else if( strcmp( cmd[0], "USR" ) == 0 )
212	{
213	if( num_parts == 5 && strcmp( cmd[2], "TWN" ) == 0 && strcmp( cmd[3], "S" ) == 0 )
214	{
215	/* Time for some Passport black magic... */
216	if( !passport_get_token( msn_auth_got_passport_token, ic, ic->acc->user, ic->acc->pass, cmd[4] ) )
217	{
218	imcb_error( ic, "Error while contacting Passport server" );
219	imc_logout( ic, TRUE );
220	return( 0 );
221	}
222	}
223	else if( num_parts == 7 && strcmp( cmd[2], "OK" ) == 0 )
224	{
225	set_t *s;
226
227	http_decode( cmd[4] );
228
229	strncpy( ic->displayname, cmd[4], sizeof( ic->displayname ) );
230	ic->displayname[sizeof(ic->displayname)-1] = 0;
231
232	if( ( s = set_find( &ic->acc->set, "display_name" ) ) )
233	{
234	g_free( s->value );
235	s->value = g_strdup( cmd[4] );
236	}
237
238	imcb_log( ic, "Authenticated, getting buddy list" );
239
240	g_snprintf( buf, sizeof( buf ), "SYN %d 0\r\n", ++md->trId );
241	return( msn_write( ic, buf, strlen( buf ) ) );
242	}
243	else
244	{
245	imcb_error( ic, "Unknown authentication type" );
246	imc_logout( ic, FALSE );
247	return( 0 );
248	}
249	}
250	else if( strcmp( cmd[0], "MSG" ) == 0 )
251	{
252	if( num_parts != 4 )
253	{
254	imcb_error( ic, "Syntax error" );
255	imc_logout( ic, TRUE );
256	return( 0 );
257	}
258
259	md->handler->msglen = atoi( cmd[3] );
260
261	if( md->handler->msglen <= 0 )
262	{
263	imcb_error( ic, "Syntax error" );
264	imc_logout( ic, TRUE );
265	return( 0 );
266	}
267	}
268	else if( strcmp( cmd[0], "SYN" ) == 0 )
269	{
270	if( num_parts == 5 )
271	{
272	md->buddycount = atoi( cmd[3] );
273	md->groupcount = atoi( cmd[4] );
274	if( md->groupcount > 0 )
275	md->grouplist = g_new0( char *, md->groupcount );
276
277	if( !*cmd[3] \|\| md->buddycount == 0 )
278	msn_logged_in( ic );
279	}
280	else
281	{
282	/* Hrrm... This SYN reply doesn't really look like something we expected.
283	Let's assume everything is okay. */
284
285	msn_logged_in( ic );
286	}
287	}
288	else if( strcmp( cmd[0], "LST" ) == 0 )
289	{
290	int list;
291
292	if( num_parts != 4 && num_parts != 5 )
293	{
294	imcb_error( ic, "Syntax error" );
295	imc_logout( ic, TRUE );
296	return( 0 );
297	}
298
299	http_decode( cmd[2] );
300	list = atoi( cmd[3] );
301
302	if( list & 1 ) /* FL */
303	{
304	char *group = NULL;
305	int num;
306
307	if( cmd[4] != NULL && sscanf( cmd[4], "%d", &num ) == 1 && num < md->groupcount )
308	group = md->grouplist[num];
309
310	imcb_add_buddy( ic, cmd[1], group );
311	imcb_rename_buddy( ic, cmd[1], cmd[2] );
312	}
313	if( list & 2 ) /* AL */
314	{
315	ic->permit = g_slist_append( ic->permit, g_strdup( cmd[1] ) );
316	}
317	if( list & 4 ) /* BL */
318	{
319	ic->deny = g_slist_append( ic->deny, g_strdup( cmd[1] ) );
320	}
321	if( list & 8 ) /* RL */
322	{
323	if( ( list & 6 ) == 0 )
324	msn_buddy_ask( ic, cmd[1], cmd[2] );
325	}
326
327	if( --md->buddycount == 0 )
328	{
329	if( ic->flags & OPT_LOGGED_IN )
330	{
331	imcb_log( ic, "Successfully transferred to different server" );
332	g_snprintf( buf, sizeof( buf ), "CHG %d %s %d\r\n", ++md->trId, md->away_state->code, 0 );
333	return( msn_write( ic, buf, strlen( buf ) ) );
334	}
335	else
336	{
337	msn_logged_in( ic );
338	}
339	}
340	}
341	else if( strcmp( cmd[0], "LSG" ) == 0 )
342	{
343	int num;
344
345	if( num_parts != 4 )
346	{
347	imcb_error( ic, "Syntax error" );
348	imc_logout( ic, TRUE );
349	return( 0 );
350	}
351
352	http_decode( cmd[2] );
353	num = atoi( cmd[1] );
354
355	if( num < md->groupcount )
356	md->grouplist[num] = g_strdup( cmd[2] );
357	}
358	else if( strcmp( cmd[0], "CHL" ) == 0 )
359	{
360	md5_state_t state;
361	md5_byte_t digest[16];
362	int i;
363
364	if( num_parts != 3 )
365	{
366	imcb_error( ic, "Syntax error" );
367	imc_logout( ic, TRUE );
368	return( 0 );
369	}
370
371	md5_init( &state );
372	md5_append( &state, (const md5_byte_t *) cmd[2], strlen( cmd[2] ) );
373	md5_append( &state, (const md5_byte_t *) QRY_CODE, strlen( QRY_CODE ) );
374	md5_finish( &state, digest );
375
376	g_snprintf( buf, sizeof( buf ), "QRY %d %s %d\r\n", ++md->trId, QRY_NAME, 32 );
377	for( i = 0; i < 16; i ++ )
378	g_snprintf( buf + strlen( buf ), 3, "%02x", digest[i] );
379
380	return( msn_write( ic, buf, strlen( buf ) ) );
381	}
382	else if( strcmp( cmd[0], "ILN" ) == 0 )
383	{
384	const struct msn_away_state *st;
385
386	if( num_parts != 6 )
387	{
388	imcb_error( ic, "Syntax error" );
389	imc_logout( ic, TRUE );
390	return( 0 );
391	}
392
393	http_decode( cmd[4] );
394	imcb_rename_buddy( ic, cmd[3], cmd[4] );
395
396	st = msn_away_state_by_code( cmd[2] );
397	if( !st )
398	{
399	/* FIXME: Warn/Bomb about unknown away state? */
400	st = msn_away_state_list;
401	}
402
403	imcb_buddy_status( ic, cmd[3], OPT_LOGGED_IN \|
404	( st->number ? OPT_AWAY : 0 ), st->name, NULL );
405	}
406	else if( strcmp( cmd[0], "FLN" ) == 0 )
407	{
408	if( cmd[1] )
409	imcb_buddy_status( ic, cmd[1], 0, NULL, NULL );
410	}
411	else if( strcmp( cmd[0], "NLN" ) == 0 )
412	{
413	const struct msn_away_state *st;
414
415	if( num_parts != 5 )
416	{
417	imcb_error( ic, "Syntax error" );
418	imc_logout( ic, TRUE );
419	return( 0 );
420	}
421
422	http_decode( cmd[3] );
423	imcb_rename_buddy( ic, cmd[2], cmd[3] );
424
425	st = msn_away_state_by_code( cmd[1] );
426	if( !st )
427	{
428	/* FIXME: Warn/Bomb about unknown away state? */
429	st = msn_away_state_list;
430	}
431
432	imcb_buddy_status( ic, cmd[2], OPT_LOGGED_IN \|
433	( st->number ? OPT_AWAY : 0 ), st->name, NULL );
434	}
435	else if( strcmp( cmd[0], "RNG" ) == 0 )
436	{
437	struct msn_switchboard *sb;
438	char *server;
439	int session, port;
440
441	if( num_parts != 7 )
442	{
443	imcb_error( ic, "Syntax error" );
444	imc_logout( ic, TRUE );
445	return( 0 );
446	}
447
448	session = atoi( cmd[1] );
449
450	server = strchr( cmd[2], ':' );
451	if( !server )
452	{
453	imcb_error( ic, "Syntax error" );
454	imc_logout( ic, TRUE );
455	return( 0 );
456	}
457	*server = 0;
458	port = atoi( server + 1 );
459	server = cmd[2];
460
461	if( strcmp( cmd[3], "CKI" ) != 0 )
462	{
463	imcb_error( ic, "Unknown authentication method for switchboard" );
464	imc_logout( ic, TRUE );
465	return( 0 );
466	}
467
468	debug( "Got a call from %s (session %d). Key = %s", cmd[5], session, cmd[4] );
469
470	sb = msn_sb_create( ic, server, port, cmd[4], session );
471	sb->who = g_strdup( cmd[5] );
472	}
473	else if( strcmp( cmd[0], "ADD" ) == 0 )
474	{
475	if( num_parts == 6 && strcmp( cmd[2], "RL" ) == 0 )
476	{
477	GSList *l;
478
479	http_decode( cmd[5] );
480
481	if( strchr( cmd[4], '@' ) == NULL )
482	{
483	imcb_error( ic, "Syntax error" );
484	imc_logout( ic, TRUE );
485	return 0;
486	}
487
488	/* We got added by someone. If we don't have this
489	person in permit/deny yet, inform the user. */
490	for( l = ic->permit; l; l = l->next )
491	if( g_strcasecmp( l->data, cmd[4] ) == 0 )
492	return 1;
493
494	for( l = ic->deny; l; l = l->next )
495	if( g_strcasecmp( l->data, cmd[4] ) == 0 )
496	return 1;
497
498	msn_buddy_ask( ic, cmd[4], cmd[5] );
499	}
500	else if( num_parts >= 6 && strcmp( cmd[2], "FL" ) == 0 )
501	{
502	http_decode( cmd[5] );
503	imcb_add_buddy( ic, cmd[4], NULL );
504	imcb_rename_buddy( ic, cmd[4], cmd[5] );
505	}
506	}
507	else if( strcmp( cmd[0], "OUT" ) == 0 )
508	{
509	int allow_reconnect = TRUE;
510
511	if( cmd[1] && strcmp( cmd[1], "OTH" ) == 0 )
512	{
513	imcb_error( ic, "Someone else logged in with your account" );
514	allow_reconnect = FALSE;
515	}
516	else if( cmd[1] && strcmp( cmd[1], "SSD" ) == 0 )
517	{
518	imcb_error( ic, "Terminating session because of server shutdown" );
519	}
520	else
521	{
522	imcb_error( ic, "Session terminated by remote server (reason unknown)" );
523	}
524
525	imc_logout( ic, allow_reconnect );
526	return( 0 );
527	}
528	else if( strcmp( cmd[0], "REA" ) == 0 )
529	{
530	if( num_parts != 5 )
531	{
532	imcb_error( ic, "Syntax error" );
533	imc_logout( ic, TRUE );
534	return( 0 );
535	}
536
537	if( g_strcasecmp( cmd[3], ic->acc->user ) == 0 )
538	{
539	set_t *s;
540
541	http_decode( cmd[4] );
542	strncpy( ic->displayname, cmd[4], sizeof( ic->displayname ) );
543	ic->displayname[sizeof(ic->displayname)-1] = 0;
544
545	if( ( s = set_find( &ic->acc->set, "display_name" ) ) )
546	{
547	g_free( s->value );
548	s->value = g_strdup( cmd[4] );
549	}
550	}
551	else
552	{
553	/* This is not supposed to happen, but let's handle it anyway... */
554	http_decode( cmd[4] );
555	imcb_rename_buddy( ic, cmd[3], cmd[4] );
556	}
557	}
558	else if( strcmp( cmd[0], "IPG" ) == 0 )
559	{
560	imcb_error( ic, "Received IPG command, we don't handle them yet." );
561
562	md->handler->msglen = atoi( cmd[1] );
563
564	if( md->handler->msglen <= 0 )
565	{
566	imcb_error( ic, "Syntax error" );
567	imc_logout( ic, TRUE );
568	return( 0 );
569	}
570	}
571	else if( isdigit( cmd[0][0] ) )
572	{
573	int num = atoi( cmd[0] );
574	const struct msn_status_code *err = msn_status_by_number( num );
575
576	imcb_error( ic, "Error reported by MSN server: %s", err->text );
577
578	if( err->flags & STATUS_FATAL )
579	{
580	imc_logout( ic, TRUE );
581	return( 0 );
582	}
583	}
584	else
585	{
586	/* debug( "Received unknown command from main server: %s", cmd[0] ); */
587	}
588
589	return( 1 );
590	}
591
592	static int msn_ns_message( gpointer data, char msg, int msglen, char *cmd, int num_parts )
593	{
594	struct im_connection *ic = data;
595	char *body;
596	int blen = 0;
597
598	if( !num_parts )
599	return( 1 );
600
601	if( ( body = strstr( msg, "\r\n\r\n" ) ) )
602	{
603	body += 4;
604	blen = msglen - ( body - msg );
605	}
606
607	if( strcmp( cmd[0], "MSG" ) == 0 )
608	{
609	if( g_strcasecmp( cmd[1], "Hotmail" ) == 0 )
610	{
611	char *ct = msn_findheader( msg, "Content-Type:", msglen );
612
613	if( !ct )
614	return( 1 );
615
616	if( g_strncasecmp( ct, "application/x-msmsgssystemmessage", 33 ) == 0 )
617	{
618	char *mtype;
619	char *arg1;
620
621	if( !body )
622	return( 1 );
623
624	mtype = msn_findheader( body, "Type:", blen );
625	arg1 = msn_findheader( body, "Arg1:", blen );
626
627	if( mtype && strcmp( mtype, "1" ) == 0 )
628	{
629	if( arg1 )
630	imcb_log( ic, "The server is going down for maintenance in %s minutes.", arg1 );
631	}
632
633	if( arg1 ) g_free( arg1 );
634	if( mtype ) g_free( mtype );
635	}
636	else if( g_strncasecmp( ct, "text/x-msmsgsprofile", 20 ) == 0 )
637	{
638	/* We don't care about this profile for now... */
639	}
640	else if( g_strncasecmp( ct, "text/x-msmsgsinitialemailnotification", 37 ) == 0 )
641	{
642	char *inbox = msn_findheader( body, "Inbox-Unread:", blen );
643	char *folders = msn_findheader( body, "Folders-Unread:", blen );
644
645	if( inbox && folders && set_getbool( &ic->acc->set, "mail_notifications" ) )
646	{
647	imcb_log( ic, "INBOX contains %s new messages, plus %s messages in other folders.", inbox, folders );
648	}
649	}
650	else if( g_strncasecmp( ct, "text/x-msmsgsemailnotification", 30 ) == 0 )
651	{
652	char *from = msn_findheader( body, "From-Addr:", blen );
653	char *fromname = msn_findheader( body, "From:", blen );
654
655	if( from && fromname && set_getbool( &ic->acc->set, "mail_notifications" ) )
656	{
657	imcb_log( ic, "Received an e-mail message from %s <%s>.", fromname, from );
658	}
659	}
660	else if( g_strncasecmp( ct, "text/x-msmsgsactivemailnotification", 35 ) == 0 )
661	{
662	/* Sorry, but this one really is USELESS */
663	}
664	else
665	{
666	debug( "Can't handle %s packet from notification server", ct );
667	}
668
669	g_free( ct );
670	}
671	}
672
673	return( 1 );
674	}
675
676	static void msn_auth_got_passport_token( struct msn_auth_data *mad )
677	{
678	struct im_connection *ic = mad->data;
679	struct msn_data *md;
680
681	/* Dead connection? */
682	if( g_slist_find( msn_connections, ic ) == NULL )
683	return;
684
685	md = ic->proto_data;
686	if( mad->token )
687	{
688	char buf[1024];
689
690	g_snprintf( buf, sizeof( buf ), "USR %d TWN S %s\r\n", ++md->trId, mad->token );
691	msn_write( ic, buf, strlen( buf ) );
692	}
693	else
694	{
695	imcb_error( ic, "Error during Passport authentication: %s", mad->error );
696	imc_logout( ic, TRUE );
697	}
698	}

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