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source: protocols/msn/ns.c @ f3579fd

Last change on this file since f3579fd was d84e2a9, checked in by Wilmer van der Gaast <wilmer@…>, at 2008-08-02T11:21:36Z
Microsoft, I hate you.
Property mode set to `100644`
File size: 17.5 KB

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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
181	if( ( sb = msn_sb_create( ic, server, port, cmd[5], MSN_SB_NEW ) ) == NULL )
182	{
183	/* Although this isn't strictly fatal for the NS connection, it's
184	definitely something serious (we ran out of file descriptors?). */
185	imcb_error( ic, "Could not create new switchboard" );
186	imc_logout( ic, TRUE );
187	return( 0 );
188	}
189
190	if( md->msgq )
191	{
192	struct msn_message *m = md->msgq->data;
193	GSList *l;
194
195	sb->who = g_strdup( m->who );
196
197	/* Move all the messages to the first user in the message
198	queue to the switchboard message queue. */
199	l = md->msgq;
200	while( l )
201	{
202	m = l->data;
203	l = l->next;
204	if( strcmp( m->who, sb->who ) == 0 )
205	{
206	sb->msgq = g_slist_append( sb->msgq, m );
207	md->msgq = g_slist_remove( md->msgq, m );
208	}
209	}
210	}
211	}
212	else
213	{
214	imcb_error( ic, "Syntax error" );
215	imc_logout( ic, TRUE );
216	return( 0 );
217	}
218	}
219	else if( strcmp( cmd[0], "USR" ) == 0 )
220	{
221	if( num_parts == 5 && strcmp( cmd[2], "TWN" ) == 0 && strcmp( cmd[3], "S" ) == 0 )
222	{
223	/* Time for some Passport black magic... */
224	if( !passport_get_token( msn_auth_got_passport_token, ic, ic->acc->user, ic->acc->pass, cmd[4] ) )
225	{
226	imcb_error( ic, "Error while contacting Passport server" );
227	imc_logout( ic, TRUE );
228	return( 0 );
229	}
230	}
231	else if( num_parts == 7 && strcmp( cmd[2], "OK" ) == 0 )
232	{
233	set_t *s;
234
235	http_decode( cmd[4] );
236
237	strncpy( ic->displayname, cmd[4], sizeof( ic->displayname ) );
238	ic->displayname[sizeof(ic->displayname)-1] = 0;
239
240	if( ( s = set_find( &ic->acc->set, "display_name" ) ) )
241	{
242	g_free( s->value );
243	s->value = g_strdup( cmd[4] );
244	}
245
246	imcb_log( ic, "Authenticated, getting buddy list" );
247
248	g_snprintf( buf, sizeof( buf ), "SYN %d 0\r\n", ++md->trId );
249	return( msn_write( ic, buf, strlen( buf ) ) );
250	}
251	else
252	{
253	imcb_error( ic, "Unknown authentication type" );
254	imc_logout( ic, FALSE );
255	return( 0 );
256	}
257	}
258	else if( strcmp( cmd[0], "MSG" ) == 0 )
259	{
260	if( num_parts != 4 )
261	{
262	imcb_error( ic, "Syntax error" );
263	imc_logout( ic, TRUE );
264	return( 0 );
265	}
266
267	md->handler->msglen = atoi( cmd[3] );
268
269	if( md->handler->msglen <= 0 )
270	{
271	imcb_error( ic, "Syntax error" );
272	imc_logout( ic, TRUE );
273	return( 0 );
274	}
275	}
276	else if( strcmp( cmd[0], "SYN" ) == 0 )
277	{
278	if( num_parts == 5 )
279	{
280	int i, groupcount;
281
282	groupcount = atoi( cmd[4] );
283	if( groupcount > 0 )
284	{
285	/* valgrind says this is leaking memory, I'm guessing
286	that this happens during server redirects. */
287	if( md->grouplist )
288	{
289	for( i = 0; i < md->groupcount; i ++ )
290	g_free( md->grouplist[i] );
291	g_free( md->grouplist );
292	}
293
294	md->groupcount = groupcount;
295	md->grouplist = g_new0( char *, md->groupcount );
296	}
297
298	md->buddycount = atoi( cmd[3] );
299	if( !*cmd[3] \|\| md->buddycount == 0 )
300	msn_logged_in( ic );
301	}
302	else
303	{
304	/* Hrrm... This SYN reply doesn't really look like something we expected.
305	Let's assume everything is okay. */
306
307	msn_logged_in( ic );
308	}
309	}
310	else if( strcmp( cmd[0], "LST" ) == 0 )
311	{
312	int list;
313
314	if( num_parts != 4 && num_parts != 5 )
315	{
316	imcb_error( ic, "Syntax error" );
317	imc_logout( ic, TRUE );
318	return( 0 );
319	}
320
321	http_decode( cmd[2] );
322	list = atoi( cmd[3] );
323
324	if( list & 1 ) /* FL */
325	{
326	char *group = NULL;
327	int num;
328
329	if( cmd[4] != NULL && sscanf( cmd[4], "%d", &num ) == 1 && num < md->groupcount )
330	group = md->grouplist[num];
331
332	imcb_add_buddy( ic, cmd[1], group );
333	imcb_rename_buddy( ic, cmd[1], cmd[2] );
334	}
335	if( list & 2 ) /* AL */
336	{
337	ic->permit = g_slist_append( ic->permit, g_strdup( cmd[1] ) );
338	}
339	if( list & 4 ) /* BL */
340	{
341	ic->deny = g_slist_append( ic->deny, g_strdup( cmd[1] ) );
342	}
343	if( list & 8 ) /* RL */
344	{
345	if( ( list & 6 ) == 0 )
346	msn_buddy_ask( ic, cmd[1], cmd[2] );
347	}
348
349	if( --md->buddycount == 0 )
350	{
351	if( ic->flags & OPT_LOGGED_IN )
352	{
353	imcb_log( ic, "Successfully transferred to different server" );
354	g_snprintf( buf, sizeof( buf ), "CHG %d %s %d\r\n", ++md->trId, md->away_state->code, 0 );
355	return( msn_write( ic, buf, strlen( buf ) ) );
356	}
357	else
358	{
359	msn_logged_in( ic );
360	}
361	}
362	}
363	else if( strcmp( cmd[0], "LSG" ) == 0 )
364	{
365	int num;
366
367	if( num_parts != 4 )
368	{
369	imcb_error( ic, "Syntax error" );
370	imc_logout( ic, TRUE );
371	return( 0 );
372	}
373
374	http_decode( cmd[2] );
375	num = atoi( cmd[1] );
376
377	if( num < md->groupcount )
378	md->grouplist[num] = g_strdup( cmd[2] );
379	}
380	else if( strcmp( cmd[0], "CHL" ) == 0 )
381	{
382	md5_state_t state;
383	md5_byte_t digest[16];
384	int i;
385
386	if( num_parts != 3 )
387	{
388	imcb_error( ic, "Syntax error" );
389	imc_logout( ic, TRUE );
390	return( 0 );
391	}
392
393	md5_init( &state );
394	md5_append( &state, (const md5_byte_t *) cmd[2], strlen( cmd[2] ) );
395	md5_append( &state, (const md5_byte_t *) QRY_CODE, strlen( QRY_CODE ) );
396	md5_finish( &state, digest );
397
398	g_snprintf( buf, sizeof( buf ), "QRY %d %s %d\r\n", ++md->trId, QRY_NAME, 32 );
399	for( i = 0; i < 16; i ++ )
400	g_snprintf( buf + strlen( buf ), 3, "%02x", digest[i] );
401
402	return( msn_write( ic, buf, strlen( buf ) ) );
403	}
404	else if( strcmp( cmd[0], "ILN" ) == 0 )
405	{
406	const struct msn_away_state *st;
407
408	if( num_parts != 6 )
409	{
410	imcb_error( ic, "Syntax error" );
411	imc_logout( ic, TRUE );
412	return( 0 );
413	}
414
415	http_decode( cmd[4] );
416	imcb_rename_buddy( ic, cmd[3], cmd[4] );
417
418	st = msn_away_state_by_code( cmd[2] );
419	if( !st )
420	{
421	/* FIXME: Warn/Bomb about unknown away state? */
422	st = msn_away_state_list;
423	}
424
425	imcb_buddy_status( ic, cmd[3], OPT_LOGGED_IN \|
426	( st->number ? OPT_AWAY : 0 ), st->name, NULL );
427	}
428	else if( strcmp( cmd[0], "FLN" ) == 0 )
429	{
430	if( cmd[1] )
431	imcb_buddy_status( ic, cmd[1], 0, NULL, NULL );
432	}
433	else if( strcmp( cmd[0], "NLN" ) == 0 )
434	{
435	const struct msn_away_state *st;
436
437	if( num_parts != 5 )
438	{
439	imcb_error( ic, "Syntax error" );
440	imc_logout( ic, TRUE );
441	return( 0 );
442	}
443
444	http_decode( cmd[3] );
445	imcb_rename_buddy( ic, cmd[2], cmd[3] );
446
447	st = msn_away_state_by_code( cmd[1] );
448	if( !st )
449	{
450	/* FIXME: Warn/Bomb about unknown away state? */
451	st = msn_away_state_list;
452	}
453
454	imcb_buddy_status( ic, cmd[2], OPT_LOGGED_IN \|
455	( st->number ? OPT_AWAY : 0 ), st->name, NULL );
456	}
457	else if( strcmp( cmd[0], "RNG" ) == 0 )
458	{
459	struct msn_switchboard *sb;
460	char *server;
461	int session, port;
462
463	if( num_parts != 7 )
464	{
465	imcb_error( ic, "Syntax error" );
466	imc_logout( ic, TRUE );
467	return( 0 );
468	}
469
470	session = atoi( cmd[1] );
471
472	server = strchr( cmd[2], ':' );
473	if( !server )
474	{
475	imcb_error( ic, "Syntax error" );
476	imc_logout( ic, TRUE );
477	return( 0 );
478	}
479	*server = 0;
480	port = atoi( server + 1 );
481	server = cmd[2];
482
483	if( strcmp( cmd[3], "CKI" ) != 0 )
484	{
485	imcb_error( ic, "Unknown authentication method for switchboard" );
486	imc_logout( ic, TRUE );
487	return( 0 );
488	}
489
490	debug( "Got a call from %s (session %d). Key = %s", cmd[5], session, cmd[4] );
491
492	if( ( sb = msn_sb_create( ic, server, port, cmd[4], session ) ) == NULL )
493	{
494	/* Although this isn't strictly fatal for the NS connection, it's
495	definitely something serious (we ran out of file descriptors?). */
496	imcb_error( ic, "Could not create new switchboard" );
497	imc_logout( ic, TRUE );
498	return( 0 );
499	}
500	else
501	{
502	sb->who = g_strdup( cmd[5] );
503	}
504	}
505	else if( strcmp( cmd[0], "ADD" ) == 0 )
506	{
507	if( num_parts == 6 && strcmp( cmd[2], "RL" ) == 0 )
508	{
509	GSList *l;
510
511	http_decode( cmd[5] );
512
513	if( strchr( cmd[4], '@' ) == NULL )
514	{
515	imcb_error( ic, "Syntax error" );
516	imc_logout( ic, TRUE );
517	return 0;
518	}
519
520	/* We got added by someone. If we don't have this
521	person in permit/deny yet, inform the user. */
522	for( l = ic->permit; l; l = l->next )
523	if( g_strcasecmp( l->data, cmd[4] ) == 0 )
524	return 1;
525
526	for( l = ic->deny; l; l = l->next )
527	if( g_strcasecmp( l->data, cmd[4] ) == 0 )
528	return 1;
529
530	msn_buddy_ask( ic, cmd[4], cmd[5] );
531	}
532	else if( num_parts >= 6 && strcmp( cmd[2], "FL" ) == 0 )
533	{
534	http_decode( cmd[5] );
535	imcb_add_buddy( ic, cmd[4], NULL );
536	imcb_rename_buddy( ic, cmd[4], cmd[5] );
537	}
538	}
539	else if( strcmp( cmd[0], "OUT" ) == 0 )
540	{
541	int allow_reconnect = TRUE;
542
543	if( cmd[1] && strcmp( cmd[1], "OTH" ) == 0 )
544	{
545	imcb_error( ic, "Someone else logged in with your account" );
546	allow_reconnect = FALSE;
547	}
548	else if( cmd[1] && strcmp( cmd[1], "SSD" ) == 0 )
549	{
550	imcb_error( ic, "Terminating session because of server shutdown" );
551	}
552	else
553	{
554	imcb_error( ic, "Session terminated by remote server (reason unknown)" );
555	}
556
557	imc_logout( ic, allow_reconnect );
558	return( 0 );
559	}
560	else if( strcmp( cmd[0], "REA" ) == 0 )
561	{
562	if( num_parts != 5 )
563	{
564	imcb_error( ic, "Syntax error" );
565	imc_logout( ic, TRUE );
566	return( 0 );
567	}
568
569	if( g_strcasecmp( cmd[3], ic->acc->user ) == 0 )
570	{
571	set_t *s;
572
573	http_decode( cmd[4] );
574	strncpy( ic->displayname, cmd[4], sizeof( ic->displayname ) );
575	ic->displayname[sizeof(ic->displayname)-1] = 0;
576
577	if( ( s = set_find( &ic->acc->set, "display_name" ) ) )
578	{
579	g_free( s->value );
580	s->value = g_strdup( cmd[4] );
581	}
582	}
583	else
584	{
585	/* This is not supposed to happen, but let's handle it anyway... */
586	http_decode( cmd[4] );
587	imcb_rename_buddy( ic, cmd[3], cmd[4] );
588	}
589	}
590	else if( strcmp( cmd[0], "IPG" ) == 0 )
591	{
592	imcb_error( ic, "Received IPG command, we don't handle them yet." );
593
594	md->handler->msglen = atoi( cmd[1] );
595
596	if( md->handler->msglen <= 0 )
597	{
598	imcb_error( ic, "Syntax error" );
599	imc_logout( ic, TRUE );
600	return( 0 );
601	}
602	}
603	else if( isdigit( cmd[0][0] ) )
604	{
605	int num = atoi( cmd[0] );
606	const struct msn_status_code *err = msn_status_by_number( num );
607
608	imcb_error( ic, "Error reported by MSN server: %s", err->text );
609
610	if( err->flags & STATUS_FATAL )
611	{
612	imc_logout( ic, TRUE );
613	return( 0 );
614	}
615	}
616	else
617	{
618	/* debug( "Received unknown command from main server: %s", cmd[0] ); */
619	}
620
621	return( 1 );
622	}
623
624	static int msn_ns_message( gpointer data, char msg, int msglen, char *cmd, int num_parts )
625	{
626	struct im_connection *ic = data;
627	char *body;
628	int blen = 0;
629
630	if( !num_parts )
631	return( 1 );
632
633	if( ( body = strstr( msg, "\r\n\r\n" ) ) )
634	{
635	body += 4;
636	blen = msglen - ( body - msg );
637	}
638
639	if( strcmp( cmd[0], "MSG" ) == 0 )
640	{
641	if( g_strcasecmp( cmd[1], "Hotmail" ) == 0 )
642	{
643	char *ct = msn_findheader( msg, "Content-Type:", msglen );
644
645	if( !ct )
646	return( 1 );
647
648	if( g_strncasecmp( ct, "application/x-msmsgssystemmessage", 33 ) == 0 )
649	{
650	char *mtype;
651	char *arg1;
652
653	if( !body )
654	return( 1 );
655
656	mtype = msn_findheader( body, "Type:", blen );
657	arg1 = msn_findheader( body, "Arg1:", blen );
658
659	if( mtype && strcmp( mtype, "1" ) == 0 )
660	{
661	if( arg1 )
662	imcb_log( ic, "The server is going down for maintenance in %s minutes.", arg1 );
663	}
664
665	if( arg1 ) g_free( arg1 );
666	if( mtype ) g_free( mtype );
667	}
668	else if( g_strncasecmp( ct, "text/x-msmsgsprofile", 20 ) == 0 )
669	{
670	/* We don't care about this profile for now... */
671	}
672	else if( g_strncasecmp( ct, "text/x-msmsgsinitialemailnotification", 37 ) == 0 )
673	{
674	char *inbox = msn_findheader( body, "Inbox-Unread:", blen );
675	char *folders = msn_findheader( body, "Folders-Unread:", blen );
676
677	if( inbox && folders && set_getbool( &ic->acc->set, "mail_notifications" ) )
678	{
679	imcb_log( ic, "INBOX contains %s new messages, plus %s messages in other folders.", inbox, folders );
680	}
681
682	g_free( inbox );
683	g_free( folders );
684	}
685	else if( g_strncasecmp( ct, "text/x-msmsgsemailnotification", 30 ) == 0 )
686	{
687	char *from = msn_findheader( body, "From-Addr:", blen );
688	char *fromname = msn_findheader( body, "From:", blen );
689
690	if( from && fromname && set_getbool( &ic->acc->set, "mail_notifications" ) )
691	{
692	imcb_log( ic, "Received an e-mail message from %s <%s>.", fromname, from );
693	}
694	}
695	else if( g_strncasecmp( ct, "text/x-msmsgsactivemailnotification", 35 ) == 0 )
696	{
697	/* Sorry, but this one really is USELESS */
698	}
699	else
700	{
701	debug( "Can't handle %s packet from notification server", ct );
702	}
703
704	g_free( ct );
705	}
706	}
707
708	return( 1 );
709	}
710
711	static void msn_auth_got_passport_token( struct msn_auth_data *mad )
712	{
713	struct im_connection *ic = mad->data;
714	struct msn_data *md;
715
716	/* Dead connection? */
717	if( g_slist_find( msn_connections, ic ) == NULL )
718	return;
719
720	md = ic->proto_data;
721	if( mad->token )
722	{
723	char buf[1024];
724
725	g_snprintf( buf, sizeof( buf ), "USR %d TWN S %s\r\n", ++md->trId, mad->token );
726	msn_write( ic, buf, strlen( buf ) );
727	}
728	else
729	{
730	imcb_error( ic, "Error during Passport authentication: %s", mad->error );
731	imc_logout( ic, TRUE );
732	}
733	}

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