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source: protocols/msn/ns.c @ c4a1036

Last change on this file since c4a1036 was 99f929c, checked in by Wilmer van der Gaast <wilmer@…>, at 2008-04-21T21:53:15Z
Now checking if msn_sb_create() returns NULL. This is very unlikely, but can happen if we run out of file descriptors, for example.
Property mode set to `100644`
File size: 17.2 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
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	md->buddycount = atoi( cmd[3] );
281	md->groupcount = atoi( cmd[4] );
282	if( md->groupcount > 0 )
283	md->grouplist = g_new0( char *, md->groupcount );
284
285	if( !*cmd[3] \|\| md->buddycount == 0 )
286	msn_logged_in( ic );
287	}
288	else
289	{
290	/* Hrrm... This SYN reply doesn't really look like something we expected.
291	Let's assume everything is okay. */
292
293	msn_logged_in( ic );
294	}
295	}
296	else if( strcmp( cmd[0], "LST" ) == 0 )
297	{
298	int list;
299
300	if( num_parts != 4 && num_parts != 5 )
301	{
302	imcb_error( ic, "Syntax error" );
303	imc_logout( ic, TRUE );
304	return( 0 );
305	}
306
307	http_decode( cmd[2] );
308	list = atoi( cmd[3] );
309
310	if( list & 1 ) /* FL */
311	{
312	char *group = NULL;
313	int num;
314
315	if( cmd[4] != NULL && sscanf( cmd[4], "%d", &num ) == 1 && num < md->groupcount )
316	group = md->grouplist[num];
317
318	imcb_add_buddy( ic, cmd[1], group );
319	imcb_rename_buddy( ic, cmd[1], cmd[2] );
320	}
321	if( list & 2 ) /* AL */
322	{
323	ic->permit = g_slist_append( ic->permit, g_strdup( cmd[1] ) );
324	}
325	if( list & 4 ) /* BL */
326	{
327	ic->deny = g_slist_append( ic->deny, g_strdup( cmd[1] ) );
328	}
329	if( list & 8 ) /* RL */
330	{
331	if( ( list & 6 ) == 0 )
332	msn_buddy_ask( ic, cmd[1], cmd[2] );
333	}
334
335	if( --md->buddycount == 0 )
336	{
337	if( ic->flags & OPT_LOGGED_IN )
338	{
339	imcb_log( ic, "Successfully transferred to different server" );
340	g_snprintf( buf, sizeof( buf ), "CHG %d %s %d\r\n", ++md->trId, md->away_state->code, 0 );
341	return( msn_write( ic, buf, strlen( buf ) ) );
342	}
343	else
344	{
345	msn_logged_in( ic );
346	}
347	}
348	}
349	else if( strcmp( cmd[0], "LSG" ) == 0 )
350	{
351	int num;
352
353	if( num_parts != 4 )
354	{
355	imcb_error( ic, "Syntax error" );
356	imc_logout( ic, TRUE );
357	return( 0 );
358	}
359
360	http_decode( cmd[2] );
361	num = atoi( cmd[1] );
362
363	if( num < md->groupcount )
364	md->grouplist[num] = g_strdup( cmd[2] );
365	}
366	else if( strcmp( cmd[0], "CHL" ) == 0 )
367	{
368	md5_state_t state;
369	md5_byte_t digest[16];
370	int i;
371
372	if( num_parts != 3 )
373	{
374	imcb_error( ic, "Syntax error" );
375	imc_logout( ic, TRUE );
376	return( 0 );
377	}
378
379	md5_init( &state );
380	md5_append( &state, (const md5_byte_t *) cmd[2], strlen( cmd[2] ) );
381	md5_append( &state, (const md5_byte_t *) QRY_CODE, strlen( QRY_CODE ) );
382	md5_finish( &state, digest );
383
384	g_snprintf( buf, sizeof( buf ), "QRY %d %s %d\r\n", ++md->trId, QRY_NAME, 32 );
385	for( i = 0; i < 16; i ++ )
386	g_snprintf( buf + strlen( buf ), 3, "%02x", digest[i] );
387
388	return( msn_write( ic, buf, strlen( buf ) ) );
389	}
390	else if( strcmp( cmd[0], "ILN" ) == 0 )
391	{
392	const struct msn_away_state *st;
393
394	if( num_parts != 6 )
395	{
396	imcb_error( ic, "Syntax error" );
397	imc_logout( ic, TRUE );
398	return( 0 );
399	}
400
401	http_decode( cmd[4] );
402	imcb_rename_buddy( ic, cmd[3], cmd[4] );
403
404	st = msn_away_state_by_code( cmd[2] );
405	if( !st )
406	{
407	/* FIXME: Warn/Bomb about unknown away state? */
408	st = msn_away_state_list;
409	}
410
411	imcb_buddy_status( ic, cmd[3], OPT_LOGGED_IN \|
412	( st->number ? OPT_AWAY : 0 ), st->name, NULL );
413	}
414	else if( strcmp( cmd[0], "FLN" ) == 0 )
415	{
416	if( cmd[1] )
417	imcb_buddy_status( ic, cmd[1], 0, NULL, NULL );
418	}
419	else if( strcmp( cmd[0], "NLN" ) == 0 )
420	{
421	const struct msn_away_state *st;
422
423	if( num_parts != 5 )
424	{
425	imcb_error( ic, "Syntax error" );
426	imc_logout( ic, TRUE );
427	return( 0 );
428	}
429
430	http_decode( cmd[3] );
431	imcb_rename_buddy( ic, cmd[2], cmd[3] );
432
433	st = msn_away_state_by_code( cmd[1] );
434	if( !st )
435	{
436	/* FIXME: Warn/Bomb about unknown away state? */
437	st = msn_away_state_list;
438	}
439
440	imcb_buddy_status( ic, cmd[2], OPT_LOGGED_IN \|
441	( st->number ? OPT_AWAY : 0 ), st->name, NULL );
442	}
443	else if( strcmp( cmd[0], "RNG" ) == 0 )
444	{
445	struct msn_switchboard *sb;
446	char *server;
447	int session, port;
448
449	if( num_parts != 7 )
450	{
451	imcb_error( ic, "Syntax error" );
452	imc_logout( ic, TRUE );
453	return( 0 );
454	}
455
456	session = atoi( cmd[1] );
457
458	server = strchr( cmd[2], ':' );
459	if( !server )
460	{
461	imcb_error( ic, "Syntax error" );
462	imc_logout( ic, TRUE );
463	return( 0 );
464	}
465	*server = 0;
466	port = atoi( server + 1 );
467	server = cmd[2];
468
469	if( strcmp( cmd[3], "CKI" ) != 0 )
470	{
471	imcb_error( ic, "Unknown authentication method for switchboard" );
472	imc_logout( ic, TRUE );
473	return( 0 );
474	}
475
476	debug( "Got a call from %s (session %d). Key = %s", cmd[5], session, cmd[4] );
477
478	if( ( sb = msn_sb_create( ic, server, port, cmd[4], session ) ) == NULL )
479	{
480	/* Although this isn't strictly fatal for the NS connection, it's
481	definitely something serious (we ran out of file descriptors?). */
482	imcb_error( ic, "Could not create new switchboard" );
483	imc_logout( ic, TRUE );
484	return( 0 );
485	}
486	else
487	{
488	sb->who = g_strdup( cmd[5] );
489	}
490	}
491	else if( strcmp( cmd[0], "ADD" ) == 0 )
492	{
493	if( num_parts == 6 && strcmp( cmd[2], "RL" ) == 0 )
494	{
495	GSList *l;
496
497	http_decode( cmd[5] );
498
499	if( strchr( cmd[4], '@' ) == NULL )
500	{
501	imcb_error( ic, "Syntax error" );
502	imc_logout( ic, TRUE );
503	return 0;
504	}
505
506	/* We got added by someone. If we don't have this
507	person in permit/deny yet, inform the user. */
508	for( l = ic->permit; l; l = l->next )
509	if( g_strcasecmp( l->data, cmd[4] ) == 0 )
510	return 1;
511
512	for( l = ic->deny; l; l = l->next )
513	if( g_strcasecmp( l->data, cmd[4] ) == 0 )
514	return 1;
515
516	msn_buddy_ask( ic, cmd[4], cmd[5] );
517	}
518	else if( num_parts >= 6 && strcmp( cmd[2], "FL" ) == 0 )
519	{
520	http_decode( cmd[5] );
521	imcb_add_buddy( ic, cmd[4], NULL );
522	imcb_rename_buddy( ic, cmd[4], cmd[5] );
523	}
524	}
525	else if( strcmp( cmd[0], "OUT" ) == 0 )
526	{
527	int allow_reconnect = TRUE;
528
529	if( cmd[1] && strcmp( cmd[1], "OTH" ) == 0 )
530	{
531	imcb_error( ic, "Someone else logged in with your account" );
532	allow_reconnect = FALSE;
533	}
534	else if( cmd[1] && strcmp( cmd[1], "SSD" ) == 0 )
535	{
536	imcb_error( ic, "Terminating session because of server shutdown" );
537	}
538	else
539	{
540	imcb_error( ic, "Session terminated by remote server (reason unknown)" );
541	}
542
543	imc_logout( ic, allow_reconnect );
544	return( 0 );
545	}
546	else if( strcmp( cmd[0], "REA" ) == 0 )
547	{
548	if( num_parts != 5 )
549	{
550	imcb_error( ic, "Syntax error" );
551	imc_logout( ic, TRUE );
552	return( 0 );
553	}
554
555	if( g_strcasecmp( cmd[3], ic->acc->user ) == 0 )
556	{
557	set_t *s;
558
559	http_decode( cmd[4] );
560	strncpy( ic->displayname, cmd[4], sizeof( ic->displayname ) );
561	ic->displayname[sizeof(ic->displayname)-1] = 0;
562
563	if( ( s = set_find( &ic->acc->set, "display_name" ) ) )
564	{
565	g_free( s->value );
566	s->value = g_strdup( cmd[4] );
567	}
568	}
569	else
570	{
571	/* This is not supposed to happen, but let's handle it anyway... */
572	http_decode( cmd[4] );
573	imcb_rename_buddy( ic, cmd[3], cmd[4] );
574	}
575	}
576	else if( strcmp( cmd[0], "IPG" ) == 0 )
577	{
578	imcb_error( ic, "Received IPG command, we don't handle them yet." );
579
580	md->handler->msglen = atoi( cmd[1] );
581
582	if( md->handler->msglen <= 0 )
583	{
584	imcb_error( ic, "Syntax error" );
585	imc_logout( ic, TRUE );
586	return( 0 );
587	}
588	}
589	else if( isdigit( cmd[0][0] ) )
590	{
591	int num = atoi( cmd[0] );
592	const struct msn_status_code *err = msn_status_by_number( num );
593
594	imcb_error( ic, "Error reported by MSN server: %s", err->text );
595
596	if( err->flags & STATUS_FATAL )
597	{
598	imc_logout( ic, TRUE );
599	return( 0 );
600	}
601	}
602	else
603	{
604	/* debug( "Received unknown command from main server: %s", cmd[0] ); */
605	}
606
607	return( 1 );
608	}
609
610	static int msn_ns_message( gpointer data, char msg, int msglen, char *cmd, int num_parts )
611	{
612	struct im_connection *ic = data;
613	char *body;
614	int blen = 0;
615
616	if( !num_parts )
617	return( 1 );
618
619	if( ( body = strstr( msg, "\r\n\r\n" ) ) )
620	{
621	body += 4;
622	blen = msglen - ( body - msg );
623	}
624
625	if( strcmp( cmd[0], "MSG" ) == 0 )
626	{
627	if( g_strcasecmp( cmd[1], "Hotmail" ) == 0 )
628	{
629	char *ct = msn_findheader( msg, "Content-Type:", msglen );
630
631	if( !ct )
632	return( 1 );
633
634	if( g_strncasecmp( ct, "application/x-msmsgssystemmessage", 33 ) == 0 )
635	{
636	char *mtype;
637	char *arg1;
638
639	if( !body )
640	return( 1 );
641
642	mtype = msn_findheader( body, "Type:", blen );
643	arg1 = msn_findheader( body, "Arg1:", blen );
644
645	if( mtype && strcmp( mtype, "1" ) == 0 )
646	{
647	if( arg1 )
648	imcb_log( ic, "The server is going down for maintenance in %s minutes.", arg1 );
649	}
650
651	if( arg1 ) g_free( arg1 );
652	if( mtype ) g_free( mtype );
653	}
654	else if( g_strncasecmp( ct, "text/x-msmsgsprofile", 20 ) == 0 )
655	{
656	/* We don't care about this profile for now... */
657	}
658	else if( g_strncasecmp( ct, "text/x-msmsgsinitialemailnotification", 37 ) == 0 )
659	{
660	char *inbox = msn_findheader( body, "Inbox-Unread:", blen );
661	char *folders = msn_findheader( body, "Folders-Unread:", blen );
662
663	if( inbox && folders && set_getbool( &ic->acc->set, "mail_notifications" ) )
664	{
665	imcb_log( ic, "INBOX contains %s new messages, plus %s messages in other folders.", inbox, folders );
666	}
667	}
668	else if( g_strncasecmp( ct, "text/x-msmsgsemailnotification", 30 ) == 0 )
669	{
670	char *from = msn_findheader( body, "From-Addr:", blen );
671	char *fromname = msn_findheader( body, "From:", blen );
672
673	if( from && fromname && set_getbool( &ic->acc->set, "mail_notifications" ) )
674	{
675	imcb_log( ic, "Received an e-mail message from %s <%s>.", fromname, from );
676	}
677	}
678	else if( g_strncasecmp( ct, "text/x-msmsgsactivemailnotification", 35 ) == 0 )
679	{
680	/* Sorry, but this one really is USELESS */
681	}
682	else
683	{
684	debug( "Can't handle %s packet from notification server", ct );
685	}
686
687	g_free( ct );
688	}
689	}
690
691	return( 1 );
692	}
693
694	static void msn_auth_got_passport_token( struct msn_auth_data *mad )
695	{
696	struct im_connection *ic = mad->data;
697	struct msn_data *md;
698
699	/* Dead connection? */
700	if( g_slist_find( msn_connections, ic ) == NULL )
701	return;
702
703	md = ic->proto_data;
704	if( mad->token )
705	{
706	char buf[1024];
707
708	g_snprintf( buf, sizeof( buf ), "USR %d TWN S %s\r\n", ++md->trId, mad->token );
709	msn_write( ic, buf, strlen( buf ) );
710	}
711	else
712	{
713	imcb_error( ic, "Error during Passport authentication: %s", mad->error );
714	imc_logout( ic, TRUE );
715	}
716	}

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