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source: protocols/msn/sb.c @ d25f6fc

Last change on this file since d25f6fc was 3b9390b, checked in by Wilmer van der Gaast <wilmer@…>, at 2005-12-18T10:39:13Z
When trying to talk to MSN people who are offline, the switchboard gets reset to a spare correctly. This fixes a problem with messages to MSN people not arriving sometimes.
Property mode set to `100644`
File size: 15.2 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 void msn_sb_callback( gpointer data, gint source, GaimInputCondition 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 cmd[1024], *buf;
125	int i, j;
126
127	if( strcmp( text, TYPING_NOTIFICATION_MESSAGE ) != 0 )
128	{
129	buf = g_new0( char, sizeof( MSN_MESSAGE_HEADERS ) + strlen( text ) * 2 );
130	i = strlen( MSN_MESSAGE_HEADERS );
131
132	strcpy( buf, MSN_MESSAGE_HEADERS );
133	for( j = 0; text[j]; j ++ )
134	{
135	if( text[j] == '\n' )
136	buf[i++] = '\r';
137
138	buf[i++] = text[j];
139	}
140	}
141	else
142	{
143	i = strlen( MSN_TYPING_HEADERS ) + strlen( sb->gc->username );
144	buf = g_new0( char, strlen( MSN_TYPING_HEADERS ) + strlen( sb->gc->username ) );
145	i = g_snprintf( buf, i, MSN_TYPING_HEADERS, sb->gc->username );
146	}
147
148	g_snprintf( cmd, sizeof( cmd ), "MSG %d N %d\r\n", ++sb->trId, i );
149	if( msn_sb_write( sb, cmd, strlen( cmd ) ) && msn_sb_write( sb, buf, i ) )
150	{
151	g_free( buf );
152	return( 1 );
153	}
154	else
155	{
156	g_free( buf );
157	return( 0 );
158	}
159	}
160	else if( sb->who )
161	{
162	struct msn_message *m = g_new0( struct msn_message, 1 );
163
164	m->who = g_strdup( "" );
165	m->text = g_strdup( text );
166	sb->msgq = g_slist_append( sb->msgq, m );
167
168	return( 1 );
169	}
170	else
171	{
172	return( 0 );
173	}
174	}
175
176	void msn_sb_to_chat( struct msn_switchboard *sb )
177	{
178	struct gaim_connection *gc = sb->gc;
179	char buf[1024];
180
181	/* Create the groupchat structure. */
182	g_snprintf( buf, sizeof( buf ), "MSN groupchat session %d", sb->session );
183	sb->chat = serv_got_joined_chat( gc, ++msn_chat_id, buf );
184
185	/* Populate the channel. */
186	if( sb->who ) add_chat_buddy( sb->chat, sb->who );
187	add_chat_buddy( sb->chat, gc->username );
188
189	/* And make sure the switchboard doesn't look like a regular chat anymore. */
190	if( sb->who )
191	{
192	g_free( sb->who );
193	sb->who = NULL;
194	}
195	}
196
197	void msn_sb_destroy( struct msn_switchboard *sb )
198	{
199	struct gaim_connection *gc = sb->gc;
200	struct msn_data *md = gc->proto_data;
201
202	debug( "Destroying switchboard: %s", sb->who ? sb->who : sb->key ? sb->key : "" );
203
204	if( sb->key ) g_free( sb->key );
205	if( sb->who ) g_free( sb->who );
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	g_free( m->who );
216	g_free( m->text );
217	g_free( m );
218	}
219	g_slist_free( sb->msgq );
220
221	serv_got_crap( gc, "Warning: Closing down MSN switchboard connection with unsent message(s), you'll have to resend them." );
222	}
223
224	if( sb->chat )
225	{
226	serv_got_chat_left( gc, sb->chat->id );
227	}
228
229	if( sb->handler )
230	{
231	if( sb->handler->rxq ) g_free( sb->handler->rxq );
232	if( sb->handler->cmd_text ) g_free( sb->handler->cmd_text );
233	g_free( sb->handler );
234	}
235
236	if( sb->inp ) gaim_input_remove( sb->inp );
237	closesocket( sb->fd );
238
239	msn_switchboards = g_slist_remove( msn_switchboards, sb );
240	md->switchboards = g_slist_remove( md->switchboards, sb );
241	g_free( sb );
242	}
243
244	void msn_sb_connected( gpointer data, gint source, GaimInputCondition cond )
245	{
246	struct msn_switchboard *sb = data;
247	struct gaim_connection *gc;
248	struct msn_data *md;
249	char buf[1024];
250
251	/* Are we still alive? */
252	if( !g_slist_find( msn_switchboards, sb ) )
253	return;
254
255	gc = sb->gc;
256	md = gc->proto_data;
257
258	if( source != sb->fd )
259	{
260	debug( "ERROR %d while connecting to switchboard server", 1 );
261	msn_sb_destroy( sb );
262	return;
263	}
264
265	/* Prepare the callback */
266	sb->handler = g_new0( struct msn_handler_data, 1 );
267	sb->handler->fd = sb->fd;
268	sb->handler->rxq = g_new0( char, 1 );
269	sb->handler->data = sb;
270	sb->handler->exec_command = msn_sb_command;
271	sb->handler->exec_message = msn_sb_message;
272
273	if( sb->session == MSN_SB_NEW )
274	g_snprintf( buf, sizeof( buf ), "USR %d %s %s\r\n", ++sb->trId, gc->username, sb->key );
275	else
276	g_snprintf( buf, sizeof( buf ), "ANS %d %s %s %d\r\n", ++sb->trId, gc->username, sb->key, sb->session );
277
278	if( msn_sb_write( sb, buf, strlen( buf ) ) )
279	sb->inp = gaim_input_add( sb->fd, GAIM_INPUT_READ, msn_sb_callback, sb );
280	else
281	debug( "ERROR %d while connecting to switchboard server", 2 );
282	}
283
284	static void msn_sb_callback( gpointer data, gint source, GaimInputCondition cond )
285	{
286	struct msn_switchboard *sb = data;
287
288	if( msn_handler( sb->handler ) == -1 )
289	{
290	debug( "ERROR: Switchboard died" );
291	msn_sb_destroy( sb );
292	}
293	}
294
295	static int msn_sb_command( gpointer data, char **cmd, int num_parts )
296	{
297	struct msn_switchboard *sb = data;
298	struct gaim_connection *gc = sb->gc;
299	char buf[1024];
300
301	if( !num_parts )
302	{
303	/* Hrrm... Empty command...? Ignore? */
304	return( 1 );
305	}
306
307	if( strcmp( cmd[0], "XFR" ) == 0 )
308	{
309	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!" );
310	signoff( gc );
311	return( 0 );
312	}
313	else if( strcmp( cmd[0], "USR" ) == 0 )
314	{
315	if( num_parts != 5 )
316	{
317	msn_sb_destroy( sb );
318	return( 0 );
319	}
320
321	if( strcmp( cmd[2], "OK" ) != 0 )
322	{
323	msn_sb_destroy( sb );
324	return( 0 );
325	}
326
327	if( sb->who )
328	{
329	g_snprintf( buf, sizeof( buf ), "CAL %d %s\r\n", ++sb->trId, sb->who );
330	return( msn_sb_write( sb, buf, strlen( buf ) ) );
331	}
332	else
333	{
334	debug( "Just created a switchboard, but I don't know what to do with it." );
335	}
336	}
337	else if( strcmp( cmd[0], "IRO" ) == 0 )
338	{
339	int num, tot;
340
341	if( num_parts != 6 )
342	{
343	msn_sb_destroy( sb );
344	return( 0 );
345	}
346
347	num = atoi( cmd[2] );
348	tot = atoi( cmd[3] );
349
350	if( tot <= 0 )
351	{
352	msn_sb_destroy( sb );
353	return( 0 );
354	}
355	else if( tot > 1 )
356	{
357	char buf[1024];
358
359	if( num == 1 )
360	{
361	g_snprintf( buf, sizeof( buf ), "MSN groupchat session %d", sb->session );
362	sb->chat = serv_got_joined_chat( gc, ++msn_chat_id, buf );
363
364	g_free( sb->who );
365	sb->who = NULL;
366	}
367
368	add_chat_buddy( sb->chat, cmd[4] );
369
370	if( num == tot )
371	{
372	add_chat_buddy( sb->chat, gc->username );
373	}
374	}
375	}
376	else if( strcmp( cmd[0], "ANS" ) == 0 )
377	{
378	if( num_parts != 3 )
379	{
380	msn_sb_destroy( sb );
381	return( 0 );
382	}
383
384	if( strcmp( cmd[2], "OK" ) != 0 )
385	{
386	debug( "Switchboard server sent a negative ANS reply" );
387	msn_sb_destroy( sb );
388	return( 0 );
389	}
390
391	sb->ready = 1;
392	}
393	else if( strcmp( cmd[0], "CAL" ) == 0 )
394	{
395	if( num_parts != 4 \|\| !isdigit( cmd[3][0] ) )
396	{
397	msn_sb_destroy( sb );
398	return( 0 );
399	}
400
401	sb->session = atoi( cmd[3] );
402	}
403	else if( strcmp( cmd[0], "JOI" ) == 0 )
404	{
405	if( num_parts != 3 )
406	{
407	msn_sb_destroy( sb );
408	return( 0 );
409	}
410
411	if( sb->who && g_strcasecmp( cmd[1], sb->who ) == 0 )
412	{
413	/* The user we wanted to talk to is finally there, let's send the queued messages then. */
414	struct msn_message *m;
415	GSList *l;
416	int st = 1;
417
418	debug( "%s arrived in the switchboard session, now sending queued message(s)", cmd[1] );
419
420	/* Without this, sendmessage() will put everything back on the queue... */
421	sb->ready = 1;
422
423	while( ( l = sb->msgq ) )
424	{
425	m = l->data;
426	if( st )
427	{
428	/* This hack is meant to convert a regular new chat into a groupchat */
429	if( strcmp( m->text, GROUPCHAT_SWITCHBOARD_MESSAGE ) == 0 )
430	msn_sb_to_chat( sb );
431	else
432	st = msn_sb_sendmessage( sb, m->text );
433	}
434	g_free( m->text );
435	g_free( m->who );
436	g_free( m );
437
438	sb->msgq = g_slist_remove( sb->msgq, m );
439	}
440
441	return( st );
442	}
443	else if( sb->who )
444	{
445	debug( "Converting chat with %s to a groupchat because %s joined the session.", sb->who, cmd[1] );
446
447	/* This SB is a one-to-one chat right now, but someone else is joining. */
448	msn_sb_to_chat( sb );
449
450	add_chat_buddy( sb->chat, cmd[1] );
451	}
452	else if( sb->chat )
453	{
454	add_chat_buddy( sb->chat, cmd[1] );
455	sb->ready = 1;
456	}
457	else
458	{
459	/* PANIC! */
460	}
461	}
462	else if( strcmp( cmd[0], "MSG" ) == 0 )
463	{
464	if( num_parts != 4 )
465	{
466	msn_sb_destroy( sb );
467	return( 0 );
468	}
469
470	sb->handler->msglen = atoi( cmd[3] );
471
472	if( sb->handler->msglen <= 0 )
473	{
474	debug( "Received a corrupted message on the switchboard, the switchboard will be closed" );
475	msn_sb_destroy( sb );
476	return( 0 );
477	}
478	}
479	else if( strcmp( cmd[0], "BYE" ) == 0 )
480	{
481	if( num_parts < 2 )
482	{
483	msn_sb_destroy( sb );
484	return( 0 );
485	}
486
487	/* if( cmd[2] && cmd[2] == '1' ) -=> Chat is being cleaned up because of idleness /
488
489	if( sb->who )
490	{
491	/* This is a single-person chat, and the other person is leaving. */
492	g_free( sb->who );
493	sb->who = NULL;
494	sb->ready = 0;
495
496	debug( "Person %s left the one-to-one switchboard connection. Keeping it around as a spare...", cmd[1] );
497
498	/* We could clean up the switchboard now, but keeping it around
499	as a spare for a next conversation sounds more sane to me.
500	The server will clean it up when it's idle for too long. */
501	}
502	else if( sb->chat )
503	{
504	remove_chat_buddy( sb->chat, cmd[1], "" );
505	}
506	else
507	{
508	/* PANIC! */
509	}
510	}
511	else if( isdigit( cmd[0][0] ) )
512	{
513	int num = atoi( cmd[0] );
514	struct msn_status_code *err = msn_status_by_number( num );
515
516	g_snprintf( buf, sizeof( buf ), "Error reported by switchboard server: %s", err->text );
517	do_error_dialog( gc, buf, "MSN" );
518
519	if( err->flags & STATUS_SB_FATAL )
520	{
521	msn_sb_destroy( sb );
522	return( 0 );
523	}
524	if( err->flags & STATUS_FATAL )
525	{
526	signoff( gc );
527	return( 0 );
528	}
529	if( err->flags & STATUS_SB_IM_SPARE )
530	{
531	if( sb->who )
532	{
533	struct msn_message *m;
534	GSList *l;
535
536	/* Apparently some invitation failed. We might want to use this
537	board later, so keep it as a spare. */
538	g_free( sb->who );
539	sb->who = NULL;
540
541	/* Also clear the msgq, otherwise someone else might get them. */
542	for( l = sb->msgq; l; l = l->next )
543	{
544	m = l->data;
545	g_free( m->who );
546	g_free( m->text );
547	g_free( m );
548	}
549	g_slist_free( sb->msgq );
550	sb->msgq = NULL;
551	}
552	}
553	}
554	else
555	{
556	debug( "Received unknown command from switchboard server: %s", cmd[0] );
557	}
558
559	return( 1 );
560	}
561
562	static int msn_sb_message( gpointer data, char msg, int msglen, char *cmd, int num_parts )
563	{
564	struct msn_switchboard *sb = data;
565	struct gaim_connection *gc = sb->gc;
566	char *body;
567	int blen = 0;
568
569	if( !num_parts )
570	return( 1 );
571
572	if( ( body = strstr( msg, "\r\n\r\n" ) ) )
573	{
574	body += 4;
575	blen = msglen - ( body - msg );
576	}
577
578	if( strcmp( cmd[0], "MSG" ) == 0 )
579	{
580	char *ct = msn_findheader( msg, "Content-Type:", msglen );
581
582	if( !ct )
583	return( 1 );
584
585	if( g_strncasecmp( ct, "text/plain", 10 ) == 0 )
586	{
587	g_free( ct );
588
589	if( !body )
590	return( 1 );
591
592	if( sb->who )
593	{
594	serv_got_im( gc, cmd[1], body, 0, 0, blen );
595	}
596	else if( sb->chat )
597	{
598	serv_got_chat_in( gc, sb->chat->id, cmd[1], 0, body, 0 );
599	}
600	else
601	{
602	/* PANIC! */
603	}
604	}
605	else if( g_strncasecmp( ct, "text/x-msmsgsinvite", 19 ) == 0 )
606	{
607	char *itype = msn_findheader( body, "Application-GUID:", blen );
608	char buf[1024];
609
610	g_free( ct );
611
612	*buf = 0;
613
614	if( !itype )
615	return( 1 );
616
617	/* File transfer. */
618	if( strcmp( itype, "{5D3E02AB-6190-11d3-BBBB-00C04F795683}" ) == 0 )
619	{
620	char *name = msn_findheader( body, "Application-File:", blen );
621	char *size = msn_findheader( body, "Application-FileSize:", blen );
622
623	if( name && size )
624	{
625	g_snprintf( buf, sizeof( buf ), "<< \x02""BitlBee\x02"" - Filetransfer: `%s', %s bytes >>\n"
626	"Filetransfers are not supported by BitlBee for now...", name, size );
627	}
628	else
629	{
630	strcpy( buf, "<< \x02""BitlBee\x02"" - Corrupted MSN filetransfer invitation message >>" );
631	}
632
633	if( name ) g_free( name );
634	if( size ) g_free( size );
635	}
636	else
637	{
638	char *iname = msn_findheader( body, "Application-Name:", blen );
639
640	g_snprintf( buf, sizeof( buf ), "<< \x02""BitlBee\x02"" - Unknown MSN invitation - %s (%s) >>",
641	itype, iname ? iname : "no name" );
642
643	if( iname ) g_free( iname );
644	}
645
646	g_free( itype );
647
648	if( !*buf )
649	return( 1 );
650
651	if( sb->who )
652	{
653	serv_got_im( gc, cmd[1], buf, 0, 0, strlen( buf ) );
654	}
655	else if( sb->chat )
656	{
657	serv_got_chat_in( gc, sb->chat->id, cmd[1], 0, buf, 0 );
658	}
659	else
660	{
661	/* PANIC! */
662	}
663	}
664	else if( g_strncasecmp( ct, "text/x-msmsgscontrol", 20 ) == 0 )
665	{
666	char *who = msn_findheader( msg, "TypingUser:", msglen );
667
668	if( who )
669	{
670	serv_got_typing( gc, who, 5, 1 );
671	g_free( who );
672	}
673
674	g_free( ct );
675	}
676	else
677	{
678	g_free( ct );
679	}
680	}
681
682	return( 1 );
683	}

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