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source: protocols/msn/sb.c @ a8a0b4c

Last change on this file since a8a0b4c was 61ae52c, checked in by Wilmer van der Gaast <wilmer@…>, at 2007-04-20T05:19:06Z
Renamed/slightly changed syntax of groupchat callback functions.
Property mode set to `100644`
File size: 15.4 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 im_connection ic, char host, int port, char key, int session )
51	{
52	struct msn_data *md = ic->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->ic = ic;
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 im_connection ic, char *handle )
73	{
74	struct msn_data *md = ic->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_chat( struct groupchat c )
89	{
90	struct msn_data *md = c->ic->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 == c )
98	return( sb );
99	}
100
101	return( NULL );
102	}
103
104	struct msn_switchboard msn_sb_spare( struct im_connection ic )
105	{
106	struct msn_data *md = ic->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->ic->acc->user );
145	buf = g_new0( char, i );
146	i = g_snprintf( buf, i, MSN_TYPING_HEADERS, sb->ic->acc->user );
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	struct groupchat msn_sb_to_chat( struct msn_switchboard sb )
180	{
181	struct im_connection *ic = sb->ic;
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 = imcb_chat_new( ic, buf );
187
188	/* Populate the channel. */
189	if( sb->who ) imcb_chat_add_buddy( sb->chat, sb->who );
190	imcb_chat_add_buddy( sb->chat, ic->acc->user );
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	return sb->chat;
200	}
201
202	void msn_sb_destroy( struct msn_switchboard *sb )
203	{
204	struct im_connection *ic = sb->ic;
205	struct msn_data *md = ic->proto_data;
206
207	debug( "Destroying switchboard: %s", sb->who ? sb->who : sb->key ? sb->key : "" );
208
209	if( sb->msgq )
210	{
211	struct msn_message *m;
212	GSList *l;
213
214	for( l = sb->msgq; l; l = l->next )
215	{
216	m = l->data;
217
218	g_free( m->who );
219	g_free( m->text );
220	g_free( m );
221	}
222	g_slist_free( sb->msgq );
223
224	imcb_log( ic, "Warning: Closing down MSN switchboard connection with "
225	"unsent message to %s, you'll have to resend it.",
226	sb->who ? sb->who : "(unknown)" );
227	}
228
229	if( sb->key ) g_free( sb->key );
230	if( sb->who ) g_free( sb->who );
231
232	if( sb->chat )
233	{
234	imcb_chat_removed( sb->chat );
235	}
236
237	if( sb->handler )
238	{
239	if( sb->handler->rxq ) g_free( sb->handler->rxq );
240	if( sb->handler->cmd_text ) g_free( sb->handler->cmd_text );
241	g_free( sb->handler );
242	}
243
244	if( sb->inp ) b_event_remove( sb->inp );
245	closesocket( sb->fd );
246
247	msn_switchboards = g_slist_remove( msn_switchboards, sb );
248	md->switchboards = g_slist_remove( md->switchboards, sb );
249	g_free( sb );
250	}
251
252	gboolean msn_sb_connected( gpointer data, gint source, b_input_condition cond )
253	{
254	struct msn_switchboard *sb = data;
255	struct im_connection *ic;
256	struct msn_data *md;
257	char buf[1024];
258
259	/* Are we still alive? */
260	if( !g_slist_find( msn_switchboards, sb ) )
261	return FALSE;
262
263	ic = sb->ic;
264	md = ic->proto_data;
265
266	if( source != sb->fd )
267	{
268	debug( "ERROR %d while connecting to switchboard server", 1 );
269	msn_sb_destroy( sb );
270	return FALSE;
271	}
272
273	/* Prepare the callback */
274	sb->handler = g_new0( struct msn_handler_data, 1 );
275	sb->handler->fd = sb->fd;
276	sb->handler->rxq = g_new0( char, 1 );
277	sb->handler->data = sb;
278	sb->handler->exec_command = msn_sb_command;
279	sb->handler->exec_message = msn_sb_message;
280
281	if( sb->session == MSN_SB_NEW )
282	g_snprintf( buf, sizeof( buf ), "USR %d %s %s\r\n", ++sb->trId, ic->acc->user, sb->key );
283	else
284	g_snprintf( buf, sizeof( buf ), "ANS %d %s %s %d\r\n", ++sb->trId, ic->acc->user, sb->key, sb->session );
285
286	if( msn_sb_write( sb, buf, strlen( buf ) ) )
287	sb->inp = b_input_add( sb->fd, GAIM_INPUT_READ, msn_sb_callback, sb );
288	else
289	debug( "ERROR %d while connecting to switchboard server", 2 );
290
291	return FALSE;
292	}
293
294	static gboolean msn_sb_callback( gpointer data, gint source, b_input_condition cond )
295	{
296	struct msn_switchboard *sb = data;
297
298	if( msn_handler( sb->handler ) == -1 )
299	{
300	debug( "ERROR: Switchboard died" );
301	msn_sb_destroy( sb );
302
303	return FALSE;
304	}
305	else
306	return TRUE;
307	}
308
309	static int msn_sb_command( gpointer data, char **cmd, int num_parts )
310	{
311	struct msn_switchboard *sb = data;
312	struct im_connection *ic = sb->ic;
313	char buf[1024];
314
315	if( !num_parts )
316	{
317	/* Hrrm... Empty command...? Ignore? */
318	return( 1 );
319	}
320
321	if( strcmp( cmd[0], "XFR" ) == 0 )
322	{
323	imcb_error( ic, "Received an XFR from a switchboard server, unable to comply! This is likely to be a bug, please report it!" );
324	imc_logout( ic, TRUE );
325	return( 0 );
326	}
327	else if( strcmp( cmd[0], "USR" ) == 0 )
328	{
329	if( num_parts != 5 )
330	{
331	msn_sb_destroy( sb );
332	return( 0 );
333	}
334
335	if( strcmp( cmd[2], "OK" ) != 0 )
336	{
337	msn_sb_destroy( sb );
338	return( 0 );
339	}
340
341	if( sb->who )
342	{
343	g_snprintf( buf, sizeof( buf ), "CAL %d %s\r\n", ++sb->trId, sb->who );
344	return( msn_sb_write( sb, buf, strlen( buf ) ) );
345	}
346	else
347	{
348	debug( "Just created a switchboard, but I don't know what to do with it." );
349	}
350	}
351	else if( strcmp( cmd[0], "IRO" ) == 0 )
352	{
353	int num, tot;
354
355	if( num_parts != 6 )
356	{
357	msn_sb_destroy( sb );
358	return( 0 );
359	}
360
361	num = atoi( cmd[2] );
362	tot = atoi( cmd[3] );
363
364	if( tot <= 0 )
365	{
366	msn_sb_destroy( sb );
367	return( 0 );
368	}
369	else if( tot > 1 )
370	{
371	char buf[1024];
372
373	if( num == 1 )
374	{
375	g_snprintf( buf, sizeof( buf ), "MSN groupchat session %d", sb->session );
376	sb->chat = imcb_chat_new( ic, buf );
377
378	g_free( sb->who );
379	sb->who = NULL;
380	}
381
382	imcb_chat_add_buddy( sb->chat, cmd[4] );
383
384	if( num == tot )
385	{
386	imcb_chat_add_buddy( sb->chat, ic->acc->user );
387	}
388	}
389	}
390	else if( strcmp( cmd[0], "ANS" ) == 0 )
391	{
392	if( num_parts != 3 )
393	{
394	msn_sb_destroy( sb );
395	return( 0 );
396	}
397
398	if( strcmp( cmd[2], "OK" ) != 0 )
399	{
400	debug( "Switchboard server sent a negative ANS reply" );
401	msn_sb_destroy( sb );
402	return( 0 );
403	}
404
405	sb->ready = 1;
406	}
407	else if( strcmp( cmd[0], "CAL" ) == 0 )
408	{
409	if( num_parts != 4 \|\| !isdigit( cmd[3][0] ) )
410	{
411	msn_sb_destroy( sb );
412	return( 0 );
413	}
414
415	sb->session = atoi( cmd[3] );
416	}
417	else if( strcmp( cmd[0], "JOI" ) == 0 )
418	{
419	if( num_parts != 3 )
420	{
421	msn_sb_destroy( sb );
422	return( 0 );
423	}
424
425	if( sb->who && g_strcasecmp( cmd[1], sb->who ) == 0 )
426	{
427	/* The user we wanted to talk to is finally there, let's send the queued messages then. */
428	struct msn_message *m;
429	GSList *l;
430	int st = 1;
431
432	debug( "%s arrived in the switchboard session, now sending queued message(s)", cmd[1] );
433
434	/* Without this, sendmessage() will put everything back on the queue... */
435	sb->ready = 1;
436
437	while( ( l = sb->msgq ) )
438	{
439	m = l->data;
440	if( st )
441	{
442	/* This hack is meant to convert a regular new chat into a groupchat */
443	if( strcmp( m->text, GROUPCHAT_SWITCHBOARD_MESSAGE ) == 0 )
444	msn_sb_to_chat( sb );
445	else
446	st = msn_sb_sendmessage( sb, m->text );
447	}
448	g_free( m->text );
449	g_free( m->who );
450	g_free( m );
451
452	sb->msgq = g_slist_remove( sb->msgq, m );
453	}
454
455	return( st );
456	}
457	else if( sb->who )
458	{
459	debug( "Converting chat with %s to a groupchat because %s joined the session.", sb->who, cmd[1] );
460
461	/* This SB is a one-to-one chat right now, but someone else is joining. */
462	msn_sb_to_chat( sb );
463
464	imcb_chat_add_buddy( sb->chat, cmd[1] );
465	}
466	else if( sb->chat )
467	{
468	imcb_chat_add_buddy( sb->chat, cmd[1] );
469	sb->ready = 1;
470	}
471	else
472	{
473	/* PANIC! */
474	}
475	}
476	else if( strcmp( cmd[0], "MSG" ) == 0 )
477	{
478	if( num_parts != 4 )
479	{
480	msn_sb_destroy( sb );
481	return( 0 );
482	}
483
484	sb->handler->msglen = atoi( cmd[3] );
485
486	if( sb->handler->msglen <= 0 )
487	{
488	debug( "Received a corrupted message on the switchboard, the switchboard will be closed" );
489	msn_sb_destroy( sb );
490	return( 0 );
491	}
492	}
493	else if( strcmp( cmd[0], "BYE" ) == 0 )
494	{
495	if( num_parts < 2 )
496	{
497	msn_sb_destroy( sb );
498	return( 0 );
499	}
500
501	/* if( cmd[2] && cmd[2] == '1' ) -=> Chat is being cleaned up because of idleness /
502
503	if( sb->who )
504	{
505	/* This is a single-person chat, and the other person is leaving. */
506	g_free( sb->who );
507	sb->who = NULL;
508	sb->ready = 0;
509
510	debug( "Person %s left the one-to-one switchboard connection. Keeping it around as a spare...", cmd[1] );
511
512	/* We could clean up the switchboard now, but keeping it around
513	as a spare for a next conversation sounds more sane to me.
514	The server will clean it up when it's idle for too long. */
515	}
516	else if( sb->chat )
517	{
518	imcb_chat_remove_buddy( sb->chat, cmd[1], "" );
519	}
520	else
521	{
522	/* PANIC! */
523	}
524	}
525	else if( isdigit( cmd[0][0] ) )
526	{
527	int num = atoi( cmd[0] );
528	const struct msn_status_code *err = msn_status_by_number( num );
529
530	imcb_error( ic, "Error reported by switchboard server: %s", err->text );
531
532	if( err->flags & STATUS_SB_FATAL )
533	{
534	msn_sb_destroy( sb );
535	return 0;
536	}
537	else if( err->flags & STATUS_FATAL )
538	{
539	imc_logout( ic, TRUE );
540	return 0;
541	}
542	else if( err->flags & STATUS_SB_IM_SPARE )
543	{
544	if( sb->who )
545	{
546	struct msn_message *m;
547	GSList *l;
548
549	/* Apparently some invitation failed. We might want to use this
550	board later, so keep it as a spare. */
551	g_free( sb->who );
552	sb->who = NULL;
553
554	/* Also clear the msgq, otherwise someone else might get them. */
555	for( l = sb->msgq; l; l = l->next )
556	{
557	m = l->data;
558	g_free( m->who );
559	g_free( m->text );
560	g_free( m );
561	}
562	g_slist_free( sb->msgq );
563	sb->msgq = NULL;
564	}
565
566	/* Do NOT return 0 here, we want to keep this sb. */
567	}
568	}
569	else
570	{
571	debug( "Received unknown command from switchboard server: %s", cmd[0] );
572	}
573
574	return( 1 );
575	}
576
577	static int msn_sb_message( gpointer data, char msg, int msglen, char *cmd, int num_parts )
578	{
579	struct msn_switchboard *sb = data;
580	struct im_connection *ic = sb->ic;
581	char *body;
582	int blen = 0;
583
584	if( !num_parts )
585	return( 1 );
586
587	if( ( body = strstr( msg, "\r\n\r\n" ) ) )
588	{
589	body += 4;
590	blen = msglen - ( body - msg );
591	}
592
593	if( strcmp( cmd[0], "MSG" ) == 0 )
594	{
595	char *ct = msn_findheader( msg, "Content-Type:", msglen );
596
597	if( !ct )
598	return( 1 );
599
600	if( g_strncasecmp( ct, "text/plain", 10 ) == 0 )
601	{
602	g_free( ct );
603
604	if( !body )
605	return( 1 );
606
607	if( sb->who )
608	{
609	imcb_buddy_msg( ic, cmd[1], body, 0, 0 );
610	}
611	else if( sb->chat )
612	{
613	imcb_chat_msg( sb->chat, cmd[1], body, 0, 0 );
614	}
615	else
616	{
617	/* PANIC! */
618	}
619	}
620	else if( g_strncasecmp( ct, "text/x-msmsgsinvite", 19 ) == 0 )
621	{
622	char *itype = msn_findheader( body, "Application-GUID:", blen );
623	char buf[1024];
624
625	g_free( ct );
626
627	*buf = 0;
628
629	if( !itype )
630	return( 1 );
631
632	/* File transfer. */
633	if( strcmp( itype, "{5D3E02AB-6190-11d3-BBBB-00C04F795683}" ) == 0 )
634	{
635	char *name = msn_findheader( body, "Application-File:", blen );
636	char *size = msn_findheader( body, "Application-FileSize:", blen );
637
638	if( name && size )
639	{
640	g_snprintf( buf, sizeof( buf ), "<< \x02""BitlBee\x02"" - Filetransfer: `%s', %s bytes >>\n"
641	"Filetransfers are not supported by BitlBee for now...", name, size );
642	}
643	else
644	{
645	strcpy( buf, "<< \x02""BitlBee\x02"" - Corrupted MSN filetransfer invitation message >>" );
646	}
647
648	if( name ) g_free( name );
649	if( size ) g_free( size );
650	}
651	else
652	{
653	char *iname = msn_findheader( body, "Application-Name:", blen );
654
655	g_snprintf( buf, sizeof( buf ), "<< \x02""BitlBee\x02"" - Unknown MSN invitation - %s (%s) >>",
656	itype, iname ? iname : "no name" );
657
658	if( iname ) g_free( iname );
659	}
660
661	g_free( itype );
662
663	if( !*buf )
664	return( 1 );
665
666	if( sb->who )
667	{
668	imcb_buddy_msg( ic, cmd[1], buf, 0, 0 );
669	}
670	else if( sb->chat )
671	{
672	imcb_chat_msg( sb->chat, cmd[1], buf, 0, 0 );
673	}
674	else
675	{
676	/* PANIC! */
677	}
678	}
679	else if( g_strncasecmp( ct, "text/x-msmsgscontrol", 20 ) == 0 )
680	{
681	char *who = msn_findheader( msg, "TypingUser:", msglen );
682
683	if( who )
684	{
685	imcb_buddy_typing( ic, who, OPT_TYPING );
686	g_free( who );
687	}
688
689	g_free( ct );
690	}
691	else
692	{
693	g_free( ct );
694	}
695	}
696
697	return( 1 );
698	}

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