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source: protocols/msn/sb.c @ 7e0af53

Last change on this file since 7e0af53 was bd28e6a, checked in by Wilmer van der Gaast <wilmer@…>, at 2006-10-24T10:40:28Z
MSN message packets are now sent at once instead of separately. Probably the MSN servers don't care, but it looks a bit prettier in wireshark. ;-)
Property mode set to `100644`
File size: 15.5 KB

Line
1	/********************************************************************\
2	* BitlBee -- An IRC to other IM-networks gateway *
3	* *
4	* Copyright 2002-2005 Wilmer van der Gaast and others *
5	\********************************************************************/
6
7	/* MSN module - Switchboard server callbacks and utilities */
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_sb_callback( gpointer data, gint source, b_input_condition cond );
33	static int msn_sb_command( gpointer data, char **cmd, int num_parts );
34	static int msn_sb_message( gpointer data, char msg, int msglen, char *cmd, int num_parts );
35
36	int msn_sb_write( struct msn_switchboard sb, char s, int len )
37	{
38	int st;
39
40	st = write( sb->fd, s, len );
41	if( st != len )
42	{
43	msn_sb_destroy( sb );
44	return( 0 );
45	}
46
47	return( 1 );
48	}
49
50	struct msn_switchboard msn_sb_create( struct gaim_connection gc, char host, int port, char key, int session )
51	{
52	struct msn_data *md = gc->proto_data;
53	struct msn_switchboard *sb = g_new0( struct msn_switchboard, 1 );
54
55	sb->fd = proxy_connect( host, port, msn_sb_connected, sb );
56	if( sb->fd < 0 )
57	{
58	g_free( sb );
59	return( NULL );
60	}
61
62	sb->gc = gc;
63	sb->key = g_strdup( key );
64	sb->session = session;
65
66	msn_switchboards = g_slist_append( msn_switchboards, sb );
67	md->switchboards = g_slist_append( md->switchboards, sb );
68
69	return( sb );
70	}
71
72	struct msn_switchboard msn_sb_by_handle( struct gaim_connection gc, char *handle )
73	{
74	struct msn_data *md = gc->proto_data;
75	struct msn_switchboard *sb;
76	GSList *l;
77
78	for( l = md->switchboards; l; l = l->next )
79	{
80	sb = l->data;
81	if( sb->who && strcmp( sb->who, handle ) == 0 )
82	return( sb );
83	}
84
85	return( NULL );
86	}
87
88	struct msn_switchboard msn_sb_by_id( struct gaim_connection gc, int id )
89	{
90	struct msn_data *md = gc->proto_data;
91	struct msn_switchboard *sb;
92	GSList *l;
93
94	for( l = md->switchboards; l; l = l->next )
95	{
96	sb = l->data;
97	if( sb->chat && sb->chat->id == id )
98	return( sb );
99	}
100
101	return( NULL );
102	}
103
104	struct msn_switchboard msn_sb_spare( struct gaim_connection gc )
105	{
106	struct msn_data *md = gc->proto_data;
107	struct msn_switchboard *sb;
108	GSList *l;
109
110	for( l = md->switchboards; l; l = l->next )
111	{
112	sb = l->data;
113	if( !sb->who && !sb->chat )
114	return( sb );
115	}
116
117	return( NULL );
118	}
119
120	int msn_sb_sendmessage( struct msn_switchboard sb, char text )
121	{
122	if( sb->ready )
123	{
124	char packet, buf;
125	int i, j;
126
127	/* Build the message. Convert LF to CR-LF for normal messages. */
128	if( strcmp( text, TYPING_NOTIFICATION_MESSAGE ) != 0 )
129	{
130	buf = g_new0( char, sizeof( MSN_MESSAGE_HEADERS ) + strlen( text ) * 2 );
131	i = strlen( MSN_MESSAGE_HEADERS );
132
133	strcpy( buf, MSN_MESSAGE_HEADERS );
134	for( j = 0; text[j]; j ++ )
135	{
136	if( text[j] == '\n' )
137	buf[i++] = '\r';
138
139	buf[i++] = text[j];
140	}
141	}
142	else
143	{
144	i = strlen( MSN_TYPING_HEADERS ) + strlen( sb->gc->username );
145	buf = g_new0( char, i );
146	i = g_snprintf( buf, i, MSN_TYPING_HEADERS, sb->gc->username );
147	}
148
149	/* Build the final packet (MSG command + the message). */
150	packet = g_strdup_printf( "MSG %d N %d\r\n%s", ++sb->trId, i, buf );
151	g_free( buf );
152	if( msn_sb_write( sb, packet, strlen( packet ) ) )
153	{
154	g_free( packet );
155	return( 1 );
156	}
157	else
158	{
159	g_free( packet );
160	return( 0 );
161	}
162	}
163	else if( sb->who )
164	{
165	struct msn_message *m = g_new0( struct msn_message, 1 );
166
167	m->who = g_strdup( "" );
168	m->text = g_strdup( text );
169	sb->msgq = g_slist_append( sb->msgq, m );
170
171	return( 1 );
172	}
173	else
174	{
175	return( 0 );
176	}
177	}
178
179	void msn_sb_to_chat( struct msn_switchboard *sb )
180	{
181	struct gaim_connection *gc = sb->gc;
182	char buf[1024];
183
184	/* Create the groupchat structure. */
185	g_snprintf( buf, sizeof( buf ), "MSN groupchat session %d", sb->session );
186	sb->chat = serv_got_joined_chat( gc, ++msn_chat_id, buf );
187
188	/* Populate the channel. */
189	if( sb->who ) add_chat_buddy( sb->chat, sb->who );
190	add_chat_buddy( sb->chat, gc->username );
191
192	/* And make sure the switchboard doesn't look like a regular chat anymore. */
193	if( sb->who )
194	{
195	g_free( sb->who );
196	sb->who = NULL;
197	}
198	}
199
200	void msn_sb_destroy( struct msn_switchboard *sb )
201	{
202	struct gaim_connection *gc = sb->gc;
203	struct msn_data *md = gc->proto_data;
204
205	debug( "Destroying switchboard: %s", sb->who ? sb->who : sb->key ? sb->key : "" );
206
207	if( sb->msgq )
208	{
209	struct msn_message *m;
210	GSList *l;
211
212	for( l = sb->msgq; l; l = l->next )
213	{
214	m = l->data;
215
216	g_free( m->who );
217	g_free( m->text );
218	g_free( m );
219	}
220	g_slist_free( sb->msgq );
221
222	serv_got_crap( gc, "Warning: Closing down MSN switchboard connection with "
223	"unsent message to %s, you'll have to resend it.",
224	sb->who ? sb->who : "(unknown)" );
225	}
226
227	if( sb->key ) g_free( sb->key );
228	if( sb->who ) g_free( sb->who );
229
230	if( sb->chat )
231	{
232	serv_got_chat_left( gc, sb->chat->id );
233	}
234
235	if( sb->handler )
236	{
237	if( sb->handler->rxq ) g_free( sb->handler->rxq );
238	if( sb->handler->cmd_text ) g_free( sb->handler->cmd_text );
239	g_free( sb->handler );
240	}
241
242	if( sb->inp ) b_event_remove( sb->inp );
243	closesocket( sb->fd );
244
245	msn_switchboards = g_slist_remove( msn_switchboards, sb );
246	md->switchboards = g_slist_remove( md->switchboards, sb );
247	g_free( sb );
248	}
249
250	gboolean msn_sb_connected( gpointer data, gint source, b_input_condition cond )
251	{
252	struct msn_switchboard *sb = data;
253	struct gaim_connection *gc;
254	struct msn_data *md;
255	char buf[1024];
256
257	/* Are we still alive? */
258	if( !g_slist_find( msn_switchboards, sb ) )
259	return FALSE;
260
261	gc = sb->gc;
262	md = gc->proto_data;
263
264	if( source != sb->fd )
265	{
266	debug( "ERROR %d while connecting to switchboard server", 1 );
267	msn_sb_destroy( sb );
268	return FALSE;
269	}
270
271	/* Prepare the callback */
272	sb->handler = g_new0( struct msn_handler_data, 1 );
273	sb->handler->fd = sb->fd;
274	sb->handler->rxq = g_new0( char, 1 );
275	sb->handler->data = sb;
276	sb->handler->exec_command = msn_sb_command;
277	sb->handler->exec_message = msn_sb_message;
278
279	if( sb->session == MSN_SB_NEW )
280	g_snprintf( buf, sizeof( buf ), "USR %d %s %s\r\n", ++sb->trId, gc->username, sb->key );
281	else
282	g_snprintf( buf, sizeof( buf ), "ANS %d %s %s %d\r\n", ++sb->trId, gc->username, sb->key, sb->session );
283
284	if( msn_sb_write( sb, buf, strlen( buf ) ) )
285	sb->inp = b_input_add( sb->fd, GAIM_INPUT_READ, msn_sb_callback, sb );
286	else
287	debug( "ERROR %d while connecting to switchboard server", 2 );
288
289	return FALSE;
290	}
291
292	static gboolean msn_sb_callback( gpointer data, gint source, b_input_condition cond )
293	{
294	struct msn_switchboard *sb = data;
295
296	if( msn_handler( sb->handler ) == -1 )
297	{
298	debug( "ERROR: Switchboard died" );
299	msn_sb_destroy( sb );
300
301	return FALSE;
302	}
303	else
304	return TRUE;
305	}
306
307	static int msn_sb_command( gpointer data, char **cmd, int num_parts )
308	{
309	struct msn_switchboard *sb = data;
310	struct gaim_connection *gc = sb->gc;
311	char buf[1024];
312
313	if( !num_parts )
314	{
315	/* Hrrm... Empty command...? Ignore? */
316	return( 1 );
317	}
318
319	if( strcmp( cmd[0], "XFR" ) == 0 )
320	{
321	hide_login_progress_error( gc, "Received an XFR from a switchboard server, unable to comply! This is likely to be a bug, please report it!" );
322	signoff( gc );
323	return( 0 );
324	}
325	else if( strcmp( cmd[0], "USR" ) == 0 )
326	{
327	if( num_parts != 5 )
328	{
329	msn_sb_destroy( sb );
330	return( 0 );
331	}
332
333	if( strcmp( cmd[2], "OK" ) != 0 )
334	{
335	msn_sb_destroy( sb );
336	return( 0 );
337	}
338
339	if( sb->who )
340	{
341	g_snprintf( buf, sizeof( buf ), "CAL %d %s\r\n", ++sb->trId, sb->who );
342	return( msn_sb_write( sb, buf, strlen( buf ) ) );
343	}
344	else
345	{
346	debug( "Just created a switchboard, but I don't know what to do with it." );
347	}
348	}
349	else if( strcmp( cmd[0], "IRO" ) == 0 )
350	{
351	int num, tot;
352
353	if( num_parts != 6 )
354	{
355	msn_sb_destroy( sb );
356	return( 0 );
357	}
358
359	num = atoi( cmd[2] );
360	tot = atoi( cmd[3] );
361
362	if( tot <= 0 )
363	{
364	msn_sb_destroy( sb );
365	return( 0 );
366	}
367	else if( tot > 1 )
368	{
369	char buf[1024];
370
371	if( num == 1 )
372	{
373	g_snprintf( buf, sizeof( buf ), "MSN groupchat session %d", sb->session );
374	sb->chat = serv_got_joined_chat( gc, ++msn_chat_id, buf );
375
376	g_free( sb->who );
377	sb->who = NULL;
378	}
379
380	add_chat_buddy( sb->chat, cmd[4] );
381
382	if( num == tot )
383	{
384	add_chat_buddy( sb->chat, gc->username );
385	}
386	}
387	}
388	else if( strcmp( cmd[0], "ANS" ) == 0 )
389	{
390	if( num_parts != 3 )
391	{
392	msn_sb_destroy( sb );
393	return( 0 );
394	}
395
396	if( strcmp( cmd[2], "OK" ) != 0 )
397	{
398	debug( "Switchboard server sent a negative ANS reply" );
399	msn_sb_destroy( sb );
400	return( 0 );
401	}
402
403	sb->ready = 1;
404	}
405	else if( strcmp( cmd[0], "CAL" ) == 0 )
406	{
407	if( num_parts != 4 \|\| !isdigit( cmd[3][0] ) )
408	{
409	msn_sb_destroy( sb );
410	return( 0 );
411	}
412
413	sb->session = atoi( cmd[3] );
414	}
415	else if( strcmp( cmd[0], "JOI" ) == 0 )
416	{
417	if( num_parts != 3 )
418	{
419	msn_sb_destroy( sb );
420	return( 0 );
421	}
422
423	if( sb->who && g_strcasecmp( cmd[1], sb->who ) == 0 )
424	{
425	/* The user we wanted to talk to is finally there, let's send the queued messages then. */
426	struct msn_message *m;
427	GSList *l;
428	int st = 1;
429
430	debug( "%s arrived in the switchboard session, now sending queued message(s)", cmd[1] );
431
432	/* Without this, sendmessage() will put everything back on the queue... */
433	sb->ready = 1;
434
435	while( ( l = sb->msgq ) )
436	{
437	m = l->data;
438	if( st )
439	{
440	/* This hack is meant to convert a regular new chat into a groupchat */
441	if( strcmp( m->text, GROUPCHAT_SWITCHBOARD_MESSAGE ) == 0 )
442	msn_sb_to_chat( sb );
443	else
444	st = msn_sb_sendmessage( sb, m->text );
445	}
446	g_free( m->text );
447	g_free( m->who );
448	g_free( m );
449
450	sb->msgq = g_slist_remove( sb->msgq, m );
451	}
452
453	return( st );
454	}
455	else if( sb->who )
456	{
457	debug( "Converting chat with %s to a groupchat because %s joined the session.", sb->who, cmd[1] );
458
459	/* This SB is a one-to-one chat right now, but someone else is joining. */
460	msn_sb_to_chat( sb );
461
462	add_chat_buddy( sb->chat, cmd[1] );
463	}
464	else if( sb->chat )
465	{
466	add_chat_buddy( sb->chat, cmd[1] );
467	sb->ready = 1;
468	}
469	else
470	{
471	/* PANIC! */
472	}
473	}
474	else if( strcmp( cmd[0], "MSG" ) == 0 )
475	{
476	if( num_parts != 4 )
477	{
478	msn_sb_destroy( sb );
479	return( 0 );
480	}
481
482	sb->handler->msglen = atoi( cmd[3] );
483
484	if( sb->handler->msglen <= 0 )
485	{
486	debug( "Received a corrupted message on the switchboard, the switchboard will be closed" );
487	msn_sb_destroy( sb );
488	return( 0 );
489	}
490	}
491	else if( strcmp( cmd[0], "BYE" ) == 0 )
492	{
493	if( num_parts < 2 )
494	{
495	msn_sb_destroy( sb );
496	return( 0 );
497	}
498
499	/* if( cmd[2] && cmd[2] == '1' ) -=> Chat is being cleaned up because of idleness /
500
501	if( sb->who )
502	{
503	/* This is a single-person chat, and the other person is leaving. */
504	g_free( sb->who );
505	sb->who = NULL;
506	sb->ready = 0;
507
508	debug( "Person %s left the one-to-one switchboard connection. Keeping it around as a spare...", cmd[1] );
509
510	/* We could clean up the switchboard now, but keeping it around
511	as a spare for a next conversation sounds more sane to me.
512	The server will clean it up when it's idle for too long. */
513	}
514	else if( sb->chat )
515	{
516	remove_chat_buddy( sb->chat, cmd[1], "" );
517	}
518	else
519	{
520	/* PANIC! */
521	}
522	}
523	else if( isdigit( cmd[0][0] ) )
524	{
525	int num = atoi( cmd[0] );
526	const struct msn_status_code *err = msn_status_by_number( num );
527
528	g_snprintf( buf, sizeof( buf ), "Error reported by switchboard server: %s", err->text );
529	do_error_dialog( gc, buf, "MSN" );
530
531	if( err->flags & STATUS_SB_FATAL )
532	{
533	msn_sb_destroy( sb );
534	return 0;
535	}
536	else if( err->flags & STATUS_FATAL )
537	{
538	signoff( gc );
539	return 0;
540	}
541	else if( err->flags & STATUS_SB_IM_SPARE )
542	{
543	if( sb->who )
544	{
545	struct msn_message *m;
546	GSList *l;
547
548	/* Apparently some invitation failed. We might want to use this
549	board later, so keep it as a spare. */
550	g_free( sb->who );
551	sb->who = NULL;
552
553	/* Also clear the msgq, otherwise someone else might get them. */
554	for( l = sb->msgq; l; l = l->next )
555	{
556	m = l->data;
557	g_free( m->who );
558	g_free( m->text );
559	g_free( m );
560	}
561	g_slist_free( sb->msgq );
562	sb->msgq = NULL;
563	}
564
565	/* Do NOT return 0 here, we want to keep this sb. */
566	}
567	}
568	else
569	{
570	debug( "Received unknown command from switchboard server: %s", cmd[0] );
571	}
572
573	return( 1 );
574	}
575
576	static int msn_sb_message( gpointer data, char msg, int msglen, char *cmd, int num_parts )
577	{
578	struct msn_switchboard *sb = data;
579	struct gaim_connection *gc = sb->gc;
580	char *body;
581	int blen = 0;
582
583	if( !num_parts )
584	return( 1 );
585
586	if( ( body = strstr( msg, "\r\n\r\n" ) ) )
587	{
588	body += 4;
589	blen = msglen - ( body - msg );
590	}
591
592	if( strcmp( cmd[0], "MSG" ) == 0 )
593	{
594	char *ct = msn_findheader( msg, "Content-Type:", msglen );
595
596	if( !ct )
597	return( 1 );
598
599	if( g_strncasecmp( ct, "text/plain", 10 ) == 0 )
600	{
601	g_free( ct );
602
603	if( !body )
604	return( 1 );
605
606	if( sb->who )
607	{
608	serv_got_im( gc, cmd[1], body, 0, 0, blen );
609	}
610	else if( sb->chat )
611	{
612	serv_got_chat_in( gc, sb->chat->id, cmd[1], 0, body, 0 );
613	}
614	else
615	{
616	/* PANIC! */
617	}
618	}
619	else if( g_strncasecmp( ct, "text/x-msmsgsinvite", 19 ) == 0 )
620	{
621	char *itype = msn_findheader( body, "Application-GUID:", blen );
622	char buf[1024];
623
624	g_free( ct );
625
626	*buf = 0;
627
628	if( !itype )
629	return( 1 );
630
631	/* File transfer. */
632	if( strcmp( itype, "{5D3E02AB-6190-11d3-BBBB-00C04F795683}" ) == 0 )
633	{
634	char *name = msn_findheader( body, "Application-File:", blen );
635	char *size = msn_findheader( body, "Application-FileSize:", blen );
636
637	if( name && size )
638	{
639	g_snprintf( buf, sizeof( buf ), "<< \x02""BitlBee\x02"" - Filetransfer: `%s', %s bytes >>\n"
640	"Filetransfers are not supported by BitlBee for now...", name, size );
641	}
642	else
643	{
644	strcpy( buf, "<< \x02""BitlBee\x02"" - Corrupted MSN filetransfer invitation message >>" );
645	}
646
647	if( name ) g_free( name );
648	if( size ) g_free( size );
649	}
650	else
651	{
652	char *iname = msn_findheader( body, "Application-Name:", blen );
653
654	g_snprintf( buf, sizeof( buf ), "<< \x02""BitlBee\x02"" - Unknown MSN invitation - %s (%s) >>",
655	itype, iname ? iname : "no name" );
656
657	if( iname ) g_free( iname );
658	}
659
660	g_free( itype );
661
662	if( !*buf )
663	return( 1 );
664
665	if( sb->who )
666	{
667	serv_got_im( gc, cmd[1], buf, 0, 0, strlen( buf ) );
668	}
669	else if( sb->chat )
670	{
671	serv_got_chat_in( gc, sb->chat->id, cmd[1], 0, buf, 0 );
672	}
673	else
674	{
675	/* PANIC! */
676	}
677	}
678	else if( g_strncasecmp( ct, "text/x-msmsgscontrol", 20 ) == 0 )
679	{
680	char *who = msn_findheader( msg, "TypingUser:", msglen );
681
682	if( who )
683	{
684	serv_got_typing( gc, who, 5, 1 );
685	g_free( who );
686	}
687
688	g_free( ct );
689	}
690	else
691	{
692	g_free( ct );
693	}
694	}
695
696	return( 1 );
697	}

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