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source: protocols/msn/sb.c @ fc5cf88

Last change on this file since fc5cf88 was 46dca11, checked in by Wilmer van der Gaast <wilmer@…>, at 2008-01-06T12:32:27Z
Changed warning message about unsent MSN messages. It should show the actual message(s) now.
Property mode set to `100644`
File size: 15.1 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 + 1 );
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	msn_msgq_purge( ic, &sb->msgq );
210
211	if( sb->key ) g_free( sb->key );
212	if( sb->who ) g_free( sb->who );
213
214	if( sb->chat )
215	{
216	imcb_chat_free( sb->chat );
217	}
218
219	if( sb->handler )
220	{
221	if( sb->handler->rxq ) g_free( sb->handler->rxq );
222	if( sb->handler->cmd_text ) g_free( sb->handler->cmd_text );
223	g_free( sb->handler );
224	}
225
226	if( sb->inp ) b_event_remove( sb->inp );
227	closesocket( sb->fd );
228
229	msn_switchboards = g_slist_remove( msn_switchboards, sb );
230	md->switchboards = g_slist_remove( md->switchboards, sb );
231	g_free( sb );
232	}
233
234	gboolean msn_sb_connected( gpointer data, gint source, b_input_condition cond )
235	{
236	struct msn_switchboard *sb = data;
237	struct im_connection *ic;
238	struct msn_data *md;
239	char buf[1024];
240
241	/* Are we still alive? */
242	if( !g_slist_find( msn_switchboards, sb ) )
243	return FALSE;
244
245	ic = sb->ic;
246	md = ic->proto_data;
247
248	if( source != sb->fd )
249	{
250	debug( "Error %d while connecting to switchboard server", 1 );
251	msn_sb_destroy( sb );
252	return FALSE;
253	}
254
255	/* Prepare the callback */
256	sb->handler = g_new0( struct msn_handler_data, 1 );
257	sb->handler->fd = sb->fd;
258	sb->handler->rxq = g_new0( char, 1 );
259	sb->handler->data = sb;
260	sb->handler->exec_command = msn_sb_command;
261	sb->handler->exec_message = msn_sb_message;
262
263	if( sb->session == MSN_SB_NEW )
264	g_snprintf( buf, sizeof( buf ), "USR %d %s %s\r\n", ++sb->trId, ic->acc->user, sb->key );
265	else
266	g_snprintf( buf, sizeof( buf ), "ANS %d %s %s %d\r\n", ++sb->trId, ic->acc->user, sb->key, sb->session );
267
268	if( msn_sb_write( sb, buf, strlen( buf ) ) )
269	sb->inp = b_input_add( sb->fd, GAIM_INPUT_READ, msn_sb_callback, sb );
270	else
271	debug( "Error %d while connecting to switchboard server", 2 );
272
273	return FALSE;
274	}
275
276	static gboolean msn_sb_callback( gpointer data, gint source, b_input_condition cond )
277	{
278	struct msn_switchboard *sb = data;
279
280	if( msn_handler( sb->handler ) == -1 )
281	{
282	debug( "Error: Switchboard died" );
283	msn_sb_destroy( sb );
284
285	return FALSE;
286	}
287	else
288	return TRUE;
289	}
290
291	static int msn_sb_command( gpointer data, char **cmd, int num_parts )
292	{
293	struct msn_switchboard *sb = data;
294	struct im_connection *ic = sb->ic;
295	char buf[1024];
296
297	if( !num_parts )
298	{
299	/* Hrrm... Empty command...? Ignore? */
300	return( 1 );
301	}
302
303	if( strcmp( cmd[0], "XFR" ) == 0 )
304	{
305	imcb_error( ic, "Received an XFR from a switchboard server, unable to comply! This is likely to be a bug, please report it!" );
306	imc_logout( ic, TRUE );
307	return( 0 );
308	}
309	else if( strcmp( cmd[0], "USR" ) == 0 )
310	{
311	if( num_parts != 5 )
312	{
313	msn_sb_destroy( sb );
314	return( 0 );
315	}
316
317	if( strcmp( cmd[2], "OK" ) != 0 )
318	{
319	msn_sb_destroy( sb );
320	return( 0 );
321	}
322
323	if( sb->who )
324	{
325	g_snprintf( buf, sizeof( buf ), "CAL %d %s\r\n", ++sb->trId, sb->who );
326	return( msn_sb_write( sb, buf, strlen( buf ) ) );
327	}
328	else
329	{
330	debug( "Just created a switchboard, but I don't know what to do with it." );
331	}
332	}
333	else if( strcmp( cmd[0], "IRO" ) == 0 )
334	{
335	int num, tot;
336
337	if( num_parts != 6 )
338	{
339	msn_sb_destroy( sb );
340	return( 0 );
341	}
342
343	num = atoi( cmd[2] );
344	tot = atoi( cmd[3] );
345
346	if( tot <= 0 )
347	{
348	msn_sb_destroy( sb );
349	return( 0 );
350	}
351	else if( tot > 1 )
352	{
353	char buf[1024];
354
355	if( num == 1 )
356	{
357	g_snprintf( buf, sizeof( buf ), "MSN groupchat session %d", sb->session );
358	sb->chat = imcb_chat_new( ic, buf );
359
360	g_free( sb->who );
361	sb->who = NULL;
362	}
363
364	imcb_chat_add_buddy( sb->chat, cmd[4] );
365
366	if( num == tot )
367	{
368	imcb_chat_add_buddy( sb->chat, ic->acc->user );
369	}
370	}
371	}
372	else if( strcmp( cmd[0], "ANS" ) == 0 )
373	{
374	if( num_parts != 3 )
375	{
376	msn_sb_destroy( sb );
377	return( 0 );
378	}
379
380	if( strcmp( cmd[2], "OK" ) != 0 )
381	{
382	debug( "Switchboard server sent a negative ANS reply" );
383	msn_sb_destroy( sb );
384	return( 0 );
385	}
386
387	sb->ready = 1;
388	}
389	else if( strcmp( cmd[0], "CAL" ) == 0 )
390	{
391	if( num_parts != 4 \|\| !isdigit( cmd[3][0] ) )
392	{
393	msn_sb_destroy( sb );
394	return( 0 );
395	}
396
397	sb->session = atoi( cmd[3] );
398	}
399	else if( strcmp( cmd[0], "JOI" ) == 0 )
400	{
401	if( num_parts != 3 )
402	{
403	msn_sb_destroy( sb );
404	return( 0 );
405	}
406
407	if( sb->who && g_strcasecmp( cmd[1], sb->who ) == 0 )
408	{
409	/* The user we wanted to talk to is finally there, let's send the queued messages then. */
410	struct msn_message *m;
411	GSList *l;
412	int st = 1;
413
414	debug( "%s arrived in the switchboard session, now sending queued message(s)", cmd[1] );
415
416	/* Without this, sendmessage() will put everything back on the queue... */
417	sb->ready = 1;
418
419	while( ( l = sb->msgq ) )
420	{
421	m = l->data;
422	if( st )
423	{
424	/* This hack is meant to convert a regular new chat into a groupchat */
425	if( strcmp( m->text, GROUPCHAT_SWITCHBOARD_MESSAGE ) == 0 )
426	msn_sb_to_chat( sb );
427	else
428	st = msn_sb_sendmessage( sb, m->text );
429	}
430	g_free( m->text );
431	g_free( m->who );
432	g_free( m );
433
434	sb->msgq = g_slist_remove( sb->msgq, m );
435	}
436
437	return( st );
438	}
439	else if( sb->who )
440	{
441	debug( "Converting chat with %s to a groupchat because %s joined the session.", sb->who, cmd[1] );
442
443	/* This SB is a one-to-one chat right now, but someone else is joining. */
444	msn_sb_to_chat( sb );
445
446	imcb_chat_add_buddy( sb->chat, cmd[1] );
447	}
448	else if( sb->chat )
449	{
450	imcb_chat_add_buddy( sb->chat, cmd[1] );
451	sb->ready = 1;
452	}
453	else
454	{
455	/* PANIC! */
456	}
457	}
458	else if( strcmp( cmd[0], "MSG" ) == 0 )
459	{
460	if( num_parts != 4 )
461	{
462	msn_sb_destroy( sb );
463	return( 0 );
464	}
465
466	sb->handler->msglen = atoi( cmd[3] );
467
468	if( sb->handler->msglen <= 0 )
469	{
470	debug( "Received a corrupted message on the switchboard, the switchboard will be closed" );
471	msn_sb_destroy( sb );
472	return( 0 );
473	}
474	}
475	else if( strcmp( cmd[0], "NAK" ) == 0 )
476	{
477	if( sb->who )
478	{
479	imcb_log( ic, "The MSN servers could not deliver one of your messages to %s.", sb->who );
480	}
481	else
482	{
483	imcb_log( ic, "The MSN servers could not deliver one of your groupchat messages to all participants." );
484	}
485	}
486	else if( strcmp( cmd[0], "BYE" ) == 0 )
487	{
488	if( num_parts < 2 )
489	{
490	msn_sb_destroy( sb );
491	return( 0 );
492	}
493
494	/* if( cmd[2] && cmd[2] == '1' ) -=> Chat is being cleaned up because of idleness /
495
496	if( sb->who )
497	{
498	/* This is a single-person chat, and the other person is leaving. */
499	g_free( sb->who );
500	sb->who = NULL;
501	sb->ready = 0;
502
503	debug( "Person %s left the one-to-one switchboard connection. Keeping it around as a spare...", cmd[1] );
504
505	/* We could clean up the switchboard now, but keeping it around
506	as a spare for a next conversation sounds more sane to me.
507	The server will clean it up when it's idle for too long. */
508	}
509	else if( sb->chat )
510	{
511	imcb_chat_remove_buddy( sb->chat, cmd[1], "" );
512	}
513	else
514	{
515	/* PANIC! */
516	}
517	}
518	else if( isdigit( cmd[0][0] ) )
519	{
520	int num = atoi( cmd[0] );
521	const struct msn_status_code *err = msn_status_by_number( num );
522
523	imcb_error( ic, "Error reported by switchboard server: %s", err->text );
524
525	if( err->flags & STATUS_SB_FATAL )
526	{
527	msn_sb_destroy( sb );
528	return 0;
529	}
530	else if( err->flags & STATUS_FATAL )
531	{
532	imc_logout( ic, TRUE );
533	return 0;
534	}
535	else if( err->flags & STATUS_SB_IM_SPARE )
536	{
537	if( sb->who )
538	{
539	/* Apparently some invitation failed. We might want to use this
540	board later, so keep it as a spare. */
541	g_free( sb->who );
542	sb->who = NULL;
543
544	/* Also clear the msgq, otherwise someone else might get them. */
545	msn_msgq_purge( ic, &sb->msgq );
546	}
547
548	/* Do NOT return 0 here, we want to keep this sb. */
549	}
550	}
551	else
552	{
553	debug( "Received unknown command from switchboard server: %s", cmd[0] );
554	}
555
556	return( 1 );
557	}
558
559	static int msn_sb_message( gpointer data, char msg, int msglen, char *cmd, int num_parts )
560	{
561	struct msn_switchboard *sb = data;
562	struct im_connection *ic = sb->ic;
563	char *body;
564	int blen = 0;
565
566	if( !num_parts )
567	return( 1 );
568
569	if( ( body = strstr( msg, "\r\n\r\n" ) ) )
570	{
571	body += 4;
572	blen = msglen - ( body - msg );
573	}
574
575	if( strcmp( cmd[0], "MSG" ) == 0 )
576	{
577	char *ct = msn_findheader( msg, "Content-Type:", msglen );
578
579	if( !ct )
580	return( 1 );
581
582	if( g_strncasecmp( ct, "text/plain", 10 ) == 0 )
583	{
584	g_free( ct );
585
586	if( !body )
587	return( 1 );
588
589	if( sb->who )
590	{
591	imcb_buddy_msg( ic, cmd[1], body, 0, 0 );
592	}
593	else if( sb->chat )
594	{
595	imcb_chat_msg( sb->chat, cmd[1], body, 0, 0 );
596	}
597	else
598	{
599	/* PANIC! */
600	}
601	}
602	else if( g_strncasecmp( ct, "text/x-msmsgsinvite", 19 ) == 0 )
603	{
604	char *itype = msn_findheader( body, "Application-GUID:", blen );
605	char buf[1024];
606
607	g_free( ct );
608
609	*buf = 0;
610
611	if( !itype )
612	return( 1 );
613
614	/* File transfer. */
615	if( strcmp( itype, "{5D3E02AB-6190-11d3-BBBB-00C04F795683}" ) == 0 )
616	{
617	char *name = msn_findheader( body, "Application-File:", blen );
618	char *size = msn_findheader( body, "Application-FileSize:", blen );
619
620	if( name && size )
621	{
622	g_snprintf( buf, sizeof( buf ), "<< \x02""BitlBee\x02"" - Filetransfer: `%s', %s bytes >>\n"
623	"Filetransfers are not supported by BitlBee for now...", name, size );
624	}
625	else
626	{
627	strcpy( buf, "<< \x02""BitlBee\x02"" - Corrupted MSN filetransfer invitation message >>" );
628	}
629
630	if( name ) g_free( name );
631	if( size ) g_free( size );
632	}
633	else
634	{
635	char *iname = msn_findheader( body, "Application-Name:", blen );
636
637	g_snprintf( buf, sizeof( buf ), "<< \x02""BitlBee\x02"" - Unknown MSN invitation - %s (%s) >>",
638	itype, iname ? iname : "no name" );
639
640	if( iname ) g_free( iname );
641	}
642
643	g_free( itype );
644
645	if( !*buf )
646	return( 1 );
647
648	if( sb->who )
649	{
650	imcb_buddy_msg( ic, cmd[1], buf, 0, 0 );
651	}
652	else if( sb->chat )
653	{
654	imcb_chat_msg( sb->chat, cmd[1], buf, 0, 0 );
655	}
656	else
657	{
658	/* PANIC! */
659	}
660	}
661	else if( g_strncasecmp( ct, "text/x-msmsgscontrol", 20 ) == 0 )
662	{
663	char *who = msn_findheader( msg, "TypingUser:", msglen );
664
665	if( who )
666	{
667	imcb_buddy_typing( ic, who, OPT_TYPING );
668	g_free( who );
669	}
670
671	g_free( ct );
672	}
673	else
674	{
675	g_free( ct );
676	}
677	}
678
679	return( 1 );
680	}

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