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source: irc_im.c @ 12fe5ea

Last change on this file since 12fe5ea was 664bac3, checked in by dequis <dx@…>, at 2015-01-16T19:50:25Z

irc-im: fixed invalid memory reading on chat leave

When a chat is left, prpl->chat_leave() is invoked, which is suppose
to free the groupchat. Since the data is now freed, or suppose to have
been freed, attempting to modify the data will result in bad things.
This simply removes an assignment operation, which was unneeded due to
the memory already being freed.

Property mode set to 100644

File size: 27.1 KB

Line
1	/********************************************************************\
2	* BitlBee -- An IRC to other IM-networks gateway *
3	* *
4	* Copyright 2002-2012 Wilmer van der Gaast and others *
5	\********************************************************************/
6
7	/* Some glue to put the IRC and the IM stuff together. */
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., 51 Franklin St.,
23	Fifth Floor, Boston, MA 02110-1301 USA
24	*/
25
26	#include "bitlbee.h"
27	#include "dcc.h"
28
29	/* IM->IRC callbacks: Simple IM/buddy-related stuff. */
30
31	static const struct irc_user_funcs irc_user_im_funcs;
32
33	static void bee_irc_imc_connected( struct im_connection *ic )
34	{
35	irc_t irc = (irc_t) ic->bee->ui_data;
36
37	irc_channel_auto_joins( irc, ic->acc );
38	}
39
40	static void bee_irc_imc_disconnected( struct im_connection *ic )
41	{
42	/* Maybe try to send /QUITs here instead of later on. */
43	}
44
45	static gboolean bee_irc_user_new( bee_t bee, bee_user_t bu )
46	{
47	irc_user_t *iu;
48	irc_t irc = (irc_t) bee->ui_data;
49	char nick[MAX_NICK_LENGTH+1], *s;
50
51	memset( nick, 0, MAX_NICK_LENGTH + 1 );
52	strcpy( nick, nick_get( bu ) );
53
54	bu->ui_data = iu = irc_user_new( irc, nick );
55	iu->bu = bu;
56
57	if( set_getbool( &irc->b->set, "private" ) )
58	iu->last_channel = NULL;
59	else
60	iu->last_channel = irc_channel_with_user( irc, iu );
61
62	if( ( s = strchr( bu->handle, '@' ) ) )
63	{
64	iu->host = g_strdup( s + 1 );
65	iu->user = g_strndup( bu->handle, s - bu->handle );
66	}
67	else
68	{
69	iu->user = g_strdup( bu->handle );
70	if( bu->ic->acc->server )
71	iu->host = g_strdup( bu->ic->acc->server );
72	else
73	{
74	char *s;
75	for( s = bu->ic->acc->tag; g_ascii_isalnum( *s ); s ++ );
76	/* Only use the tag if we got to the end of the string.
77	(So allow alphanumerics only. Hopefully not too
78	restrictive.) */
79	if( *s )
80	iu->host = g_strdup( bu->ic->acc->prpl->name );
81	else
82	iu->host = g_strdup( bu->ic->acc->tag );
83	}
84	}
85
86	while( ( s = strchr( iu->user, ' ' ) ) )
87	*s = '_';
88
89	if( bu->flags & BEE_USER_LOCAL )
90	{
91	char *s = set_getstr( &bee->set, "handle_unknown" );
92
93	if( strcmp( s, "add_private" ) == 0 )
94	iu->last_channel = NULL;
95	else if( strcmp( s, "add_channel" ) == 0 )
96	iu->last_channel = irc->default_channel;
97	}
98
99	iu->f = &irc_user_im_funcs;
100
101	return TRUE;
102	}
103
104	static gboolean bee_irc_user_free( bee_t bee, bee_user_t bu )
105	{
106	return irc_user_free( bee->ui_data, (irc_user_t *) bu->ui_data );
107	}
108
109	static gboolean bee_irc_user_status( bee_t bee, bee_user_t bu, bee_user_t *old )
110	{
111	irc_t *irc = bee->ui_data;
112	irc_user_t *iu = bu->ui_data;
113
114	/* Do this outside the if below since away state can change without
115	the online state changing. */
116	iu->flags &= ~IRC_USER_AWAY;
117	if( bu->flags & BEE_USER_AWAY \|\| !( bu->flags & BEE_USER_ONLINE ) )
118	iu->flags \|= IRC_USER_AWAY;
119
120	if( ( bu->flags & BEE_USER_ONLINE ) != ( old->flags & BEE_USER_ONLINE ) )
121	{
122	if( bu->flags & BEE_USER_ONLINE )
123	{
124	if( g_hash_table_lookup( irc->watches, iu->key ) )
125	irc_send_num( irc, 600, "%s %s %s %d :%s", iu->nick, iu->user,
126	iu->host, (int) time( NULL ), "logged online" );
127	}
128	else
129	{
130	if( g_hash_table_lookup( irc->watches, iu->key ) )
131	irc_send_num( irc, 601, "%s %s %s %d :%s", iu->nick, iu->user,
132	iu->host, (int) time( NULL ), "logged offline" );
133
134	/* Send a QUIT since those will also show up in any
135	query windows the user may have, plus it's only
136	one QUIT instead of possibly many (in case of
137	multiple control chans). If there's a channel that
138	shows offline people, a JOIN will follow. */
139	if( set_getbool( &bee->set, "offline_user_quits" ) )
140	irc_user_quit( iu, "Leaving..." );
141	}
142	}
143
144	/* Reset this one since the info may have changed. */
145	iu->away_reply_timeout = 0;
146
147	bee_irc_channel_update( irc, NULL, iu );
148
149	return TRUE;
150	}
151
152	void bee_irc_channel_update( irc_t irc, irc_channel_t ic, irc_user_t *iu )
153	{
154	GSList *l;
155
156	if( ic == NULL )
157	{
158	for( l = irc->channels; l; l = l->next )
159	{
160	ic = l->data;
161	/* TODO: Just add a type flag or so.. */
162	if( ic->f == irc->default_channel->f &&
163	( ic->flags & IRC_CHANNEL_JOINED ) )
164	bee_irc_channel_update( irc, ic, iu );
165	}
166	return;
167	}
168	if( iu == NULL )
169	{
170	for( l = irc->users; l; l = l->next )
171	{
172	iu = l->data;
173	if( iu->bu )
174	bee_irc_channel_update( irc, ic, l->data );
175	}
176	return;
177	}
178
179	if( !irc_channel_wants_user( ic, iu ) )
180	{
181	irc_channel_del_user( ic, iu, IRC_CDU_PART, NULL );
182	}
183	else
184	{
185	struct irc_control_channel *icc = ic->data;
186	int mode = 0;
187
188	if( !( iu->bu->flags & BEE_USER_ONLINE ) )
189	mode = icc->modes[0];
190	else if( iu->bu->flags & BEE_USER_AWAY )
191	mode = icc->modes[1];
192	else
193	mode = icc->modes[2];
194
195	if( !mode )
196	irc_channel_del_user( ic, iu, IRC_CDU_PART, NULL );
197	else
198	{
199	irc_channel_add_user( ic, iu );
200	irc_channel_user_set_mode( ic, iu, mode );
201	}
202	}
203	}
204
205	static gboolean bee_irc_user_msg( bee_t bee, bee_user_t bu, const char *msg_, time_t sent_at )
206	{
207	irc_t *irc = bee->ui_data;
208	irc_user_t iu = (irc_user_t ) bu->ui_data;
209	const char *dst;
210	char *prefix = NULL;
211	char wrapped, ts = NULL;
212	char *msg = g_strdup( msg_ );
213	GSList *l;
214
215	if( sent_at > 0 && set_getbool( &irc->b->set, "display_timestamps" ) )
216	ts = irc_format_timestamp( irc, sent_at );
217
218	dst = irc_user_msgdest( iu );
219	if( dst != irc->user->nick )
220	{
221	/* if not messaging directly, call user by name */
222	prefix = g_strdup_printf( "%s%s%s", irc->user->nick, set_getstr( &bee->set, "to_char" ), ts ? : "" );
223	}
224	else
225	{
226	prefix = ts;
227	ts = NULL; /* don't double-free */
228	}
229
230	for( l = irc_plugins; l; l = l->next )
231	{
232	irc_plugin_t *p = l->data;
233	if( p->filter_msg_in )
234	{
235	char *s = p->filter_msg_in( iu, msg, 0 );
236	if( s )
237	{
238	if( s != msg )
239	g_free( msg );
240	msg = s;
241	}
242	else
243	{
244	/* Modules can swallow messages. */
245	return TRUE;
246	}
247	}
248	}
249
250	if( ( g_strcasecmp( set_getstr( &bee->set, "strip_html" ), "always" ) == 0 ) \|\|
251	( ( bu->ic->flags & OPT_DOES_HTML ) && set_getbool( &bee->set, "strip_html" ) ) )
252	{
253	char *s = g_strdup( msg );
254	strip_html( s );
255	g_free( msg );
256	msg = s;
257	}
258
259	wrapped = word_wrap( msg, 425 );
260	irc_send_msg( iu, "PRIVMSG", dst, wrapped, prefix );
261
262	g_free( wrapped );
263	g_free( prefix );
264	g_free( msg );
265	g_free( ts );
266
267	return TRUE;
268	}
269
270	static gboolean bee_irc_user_typing( bee_t bee, bee_user_t bu, uint32_t flags )
271	{
272	irc_t irc = (irc_t ) bee->ui_data;
273
274	if( set_getbool( &bee->set, "typing_notice" ) )
275	irc_send_msg_f( (irc_user_t *) bu->ui_data, "PRIVMSG", irc->user->nick,
276	"\001TYPING %d\001", ( flags >> 8 ) & 3 );
277	else
278	return FALSE;
279
280	return TRUE;
281	}
282
283	static gboolean bee_irc_user_action_response( bee_t bee, bee_user_t bu, const char action, char const args[], void *data )
284	{
285	irc_t irc = (irc_t ) bee->ui_data;
286	GString *msg = g_string_new( "\001" );
287
288	g_string_append( msg, action );
289	while( *args )
290	{
291	if( strchr( *args, ' ' ) )
292	g_string_append_printf( msg, " \"%s\"", *args );
293	else
294	g_string_append_printf( msg, " %s", *args );
295	args ++;
296	}
297	g_string_append_c( msg, '\001' );
298
299	irc_send_msg( (irc_user_t *) bu->ui_data, "NOTICE", irc->user->nick, msg->str, NULL );
300
301	return TRUE;
302	}
303
304	static gboolean bee_irc_user_nick_update( irc_user_t *iu );
305
306	static gboolean bee_irc_user_fullname( bee_t bee, bee_user_t bu )
307	{
308	irc_user_t iu = (irc_user_t ) bu->ui_data;
309	char *s;
310
311	if( iu->fullname != iu->nick )
312	g_free( iu->fullname );
313	iu->fullname = g_strdup( bu->fullname );
314
315	/* Strip newlines (unlikely, but IRC-unfriendly so they must go)
316	TODO(wilmer): Do the same with away msgs again! */
317	for( s = iu->fullname; *s; s ++ )
318	if( g_ascii_isspace( s ) ) s = ' ';
319
320	if( ( bu->ic->flags & OPT_LOGGED_IN ) && set_getbool( &bee->set, "display_namechanges" ) )
321	{
322	/* People don't like this /NOTICE. Meh, let's go back to the old one.
323	char *msg = g_strdup_printf( "<< \002BitlBee\002 - Changed name to `%s' >>", iu->fullname );
324	irc_send_msg( iu, "NOTICE", irc->user->nick, msg, NULL );
325	*/
326	imcb_log( bu->ic, "User `%s' changed name to `%s'", iu->nick, iu->fullname );
327	}
328
329	bee_irc_user_nick_update( iu );
330
331	return TRUE;
332	}
333
334	static gboolean bee_irc_user_nick_hint( bee_t bee, bee_user_t bu, const char *hint )
335	{
336	bee_irc_user_nick_update( (irc_user_t*) bu->ui_data );
337
338	return TRUE;
339	}
340
341	static gboolean bee_irc_user_group( bee_t bee, bee_user_t bu )
342	{
343	irc_user_t iu = (irc_user_t ) bu->ui_data;
344	irc_t irc = (irc_t ) bee->ui_data;
345	bee_user_flags_t online;
346
347	/* Take the user offline temporarily so we can change the nick (if necessary). */
348	if( ( online = bu->flags & BEE_USER_ONLINE ) )
349	bu->flags &= ~BEE_USER_ONLINE;
350
351	bee_irc_channel_update( irc, NULL, iu );
352	bee_irc_user_nick_update( iu );
353
354	if( online )
355	{
356	bu->flags \|= online;
357	bee_irc_channel_update( irc, NULL, iu );
358	}
359
360	return TRUE;
361	}
362
363	static gboolean bee_irc_user_nick_update( irc_user_t *iu )
364	{
365	bee_user_t *bu = iu->bu;
366	char *newnick;
367
368	if( bu->flags & BEE_USER_ONLINE )
369	/* Ignore if the user is visible already. */
370	return TRUE;
371
372	if( nick_saved( bu ) )
373	/* The user already assigned a nickname to this person. */
374	return TRUE;
375
376	newnick = nick_get( bu );
377
378	if( strcmp( iu->nick, newnick ) != 0 )
379	{
380	nick_dedupe( bu, newnick );
381	irc_user_set_nick( iu, newnick );
382	}
383
384	return TRUE;
385	}
386
387	void bee_irc_user_nick_reset( irc_user_t *iu )
388	{
389	bee_user_t *bu = iu->bu;
390	bee_user_flags_t online;
391
392	if( bu == FALSE )
393	return;
394
395	/* In this case, pretend the user is offline. */
396	if( ( online = bu->flags & BEE_USER_ONLINE ) )
397	bu->flags &= ~BEE_USER_ONLINE;
398
399	nick_del( bu );
400	bee_irc_user_nick_update( iu );
401
402	bu->flags \|= online;
403	}
404
405	/* IRC->IM calls */
406
407	static gboolean bee_irc_user_privmsg_cb( gpointer data, gint fd, b_input_condition cond );
408
409	static gboolean bee_irc_user_privmsg( irc_user_t iu, const char msg )
410	{
411	const char *away;
412
413	if( iu->bu == NULL )
414	return FALSE;
415
416	if( ( away = irc_user_get_away( iu ) ) &&
417	time( NULL ) >= iu->away_reply_timeout )
418	{
419	irc_send_num( iu->irc, 301, "%s :%s", iu->nick, away );
420	iu->away_reply_timeout = time( NULL ) +
421	set_getint( &iu->irc->b->set, "away_reply_timeout" );
422	}
423
424	if( iu->pastebuf == NULL )
425	iu->pastebuf = g_string_new( msg );
426	else
427	{
428	b_event_remove( iu->pastebuf_timer );
429	g_string_append_printf( iu->pastebuf, "\n%s", msg );
430	}
431
432	if( set_getbool( &iu->irc->b->set, "paste_buffer" ) )
433	{
434	int delay;
435
436	if( ( delay = set_getint( &iu->irc->b->set, "paste_buffer_delay" ) ) <= 5 )
437	delay *= 1000;
438
439	iu->pastebuf_timer = b_timeout_add( delay, bee_irc_user_privmsg_cb, iu );
440
441	return TRUE;
442	}
443	else
444	{
445	bee_irc_user_privmsg_cb( iu, 0, 0 );
446
447	return TRUE;
448	}
449	}
450
451	static gboolean bee_irc_user_privmsg_cb( gpointer data, gint fd, b_input_condition cond )
452	{
453	irc_user_t *iu = data;
454	char *msg;
455	GSList *l;
456
457	msg = g_string_free( iu->pastebuf, FALSE );
458	iu->pastebuf = NULL;
459	iu->pastebuf_timer = 0;
460
461	for( l = irc_plugins; l; l = l->next )
462	{
463	irc_plugin_t *p = l->data;
464	if( p->filter_msg_out )
465	{
466	char *s = p->filter_msg_out( iu, msg, 0 );
467	if( s )
468	{
469	if( s != msg )
470	g_free( msg );
471	msg = s;
472	}
473	else
474	{
475	/* Modules can swallow messages. */
476	iu->pastebuf = NULL;
477	g_free( msg );
478	return FALSE;
479	}
480	}
481	}
482
483	bee_user_msg( iu->irc->b, iu->bu, msg, 0 );
484
485	g_free( msg );
486
487	return FALSE;
488	}
489
490	static gboolean bee_irc_user_ctcp( irc_user_t iu, char const *ctcp )
491	{
492	if( ctcp[1] && g_strcasecmp( ctcp[0], "DCC" ) == 0
493	&& g_strcasecmp( ctcp[1], "SEND" ) == 0 )
494	{
495	if( iu->bu && iu->bu->ic && iu->bu->ic->acc->prpl->transfer_request )
496	{
497	file_transfer_t *ft = dcc_request( iu->bu->ic, ctcp );
498	if ( ft )
499	iu->bu->ic->acc->prpl->transfer_request( iu->bu->ic, ft, iu->bu->handle );
500
501	return TRUE;
502	}
503	}
504	else if( g_strcasecmp( ctcp[0], "TYPING" ) == 0 )
505	{
506	if( iu->bu && iu->bu->ic && iu->bu->ic->acc->prpl->send_typing && ctcp[1] )
507	{
508	int st = ctcp[1][0];
509	if( st >= '0' && st <= '2' )
510	{
511	st <<= 8;
512	iu->bu->ic->acc->prpl->send_typing( iu->bu->ic, iu->bu->handle, st );
513	}
514
515	return TRUE;
516	}
517	}
518	else if( g_strcasecmp( ctcp[0], "HELP" ) == 0 && iu->bu )
519	{
520	GString *supp = g_string_new( "Supported CTCPs:" );
521	GList *l;
522
523	if( iu->bu->ic && iu->bu->ic->acc->prpl->transfer_request )
524	g_string_append( supp, " DCC SEND," );
525	if( iu->bu->ic && iu->bu->ic->acc->prpl->send_typing )
526	g_string_append( supp, " TYPING," );
527	if( iu->bu->ic->acc->prpl->buddy_action_list )
528	for( l = iu->bu->ic->acc->prpl->buddy_action_list( iu->bu ); l; l = l->next )
529	{
530	struct buddy_action *ba = l->data;
531	g_string_append_printf( supp, " %s (%s),",
532	ba->name, ba->description );
533	}
534	g_string_truncate( supp, supp->len - 1 );
535	irc_send_msg_f( iu, "NOTICE", iu->irc->user->nick, "\001HELP %s\001", supp->str );
536	g_string_free( supp, TRUE );
537	}
538	else if( iu->bu && iu->bu->ic && iu->bu->ic->acc->prpl->buddy_action )
539	{
540	iu->bu->ic->acc->prpl->buddy_action( iu->bu, ctcp[0], ctcp + 1, NULL );
541	}
542
543	return FALSE;
544	}
545
546	static const struct irc_user_funcs irc_user_im_funcs = {
547	bee_irc_user_privmsg,
548	bee_irc_user_ctcp,
549	};
550
551
552	/* IM->IRC: Groupchats */
553	const struct irc_channel_funcs irc_channel_im_chat_funcs;
554
555	static gboolean bee_irc_chat_new( bee_t bee, struct groupchat c )
556	{
557	irc_t *irc = bee->ui_data;
558	irc_channel_t *ic;
559	char *topic;
560	GSList *l;
561	int i;
562
563	/* Try to find a channel that expects to receive a groupchat.
564	This flag is set earlier in our current call trace. */
565	for( l = irc->channels; l; l = l->next )
566	{
567	ic = l->data;
568	if( ic->flags & IRC_CHANNEL_CHAT_PICKME )
569	break;
570	}
571
572	/* If we found none, just generate some stupid name. */
573	if( l == NULL ) for( i = 0; i <= 999; i ++ )
574	{
575	char name[16];
576	sprintf( name, "#chat_%03d", i );
577	if( ( ic = irc_channel_new( irc, name ) ) )
578	break;
579	}
580
581	if( ic == NULL )
582	return FALSE;
583
584	c->ui_data = ic;
585	ic->data = c;
586
587	topic = g_strdup_printf( "BitlBee groupchat: \"%s\". Please keep in mind that root-commands won't work here. Have fun!", c->title );
588	irc_channel_set_topic( ic, topic, irc->root );
589	g_free( topic );
590
591	return TRUE;
592	}
593
594	static gboolean bee_irc_chat_free( bee_t bee, struct groupchat c )
595	{
596	irc_channel_t *ic = c->ui_data;
597
598	if( ic == NULL )
599	return FALSE;
600
601	if( ic->flags & IRC_CHANNEL_JOINED )
602	irc_channel_printf( ic, "Cleaning up channel, bye!" );
603
604	ic->data = NULL;
605	c->ui_data = NULL;
606	irc_channel_del_user( ic, ic->irc->user, IRC_CDU_KICK, "Chatroom closed by server" );
607
608	return TRUE;
609	}
610
611	static gboolean bee_irc_chat_log( bee_t bee, struct groupchat c, const char *text )
612	{
613	irc_channel_t *ic = c->ui_data;
614
615	if( ic == NULL )
616	return FALSE;
617
618	irc_channel_printf( ic, "%s", text );
619
620	return TRUE;
621	}
622
623	static gboolean bee_irc_chat_msg( bee_t bee, struct groupchat c, bee_user_t bu, const char msg, time_t sent_at )
624	{
625	irc_t *irc = bee->ui_data;
626	irc_user_t *iu = bu->ui_data;
627	irc_channel_t *ic = c->ui_data;
628	char wrapped, ts = NULL;
629
630	if( ic == NULL )
631	return FALSE;
632
633	if( sent_at > 0 && set_getbool( &bee->set, "display_timestamps" ) )
634	ts = irc_format_timestamp( irc, sent_at );
635
636	wrapped = word_wrap( msg, 425 );
637	irc_send_msg( iu, "PRIVMSG", ic->name, wrapped, ts );
638	g_free( ts );
639	g_free( wrapped );
640
641	return TRUE;
642	}
643
644	static gboolean bee_irc_chat_add_user( bee_t bee, struct groupchat c, bee_user_t *bu )
645	{
646	irc_t *irc = bee->ui_data;
647	irc_channel_t *ic = c->ui_data;
648
649	if( ic == NULL )
650	return FALSE;
651
652	irc_channel_add_user( ic, bu == bee->user ? irc->user : bu->ui_data );
653
654	return TRUE;
655	}
656
657	static gboolean bee_irc_chat_remove_user( bee_t bee, struct groupchat c, bee_user_t *bu )
658	{
659	irc_t *irc = bee->ui_data;
660	irc_channel_t *ic = c->ui_data;
661
662	if( ic == NULL \|\| bu == NULL )
663	return FALSE;
664
665	/* TODO: Possible bug here: If a module removes $user here instead of just
666	using imcb_chat_free() and the channel was IRC_CHANNEL_TEMP, we get into
667	a broken state around here. */
668	irc_channel_del_user( ic, bu == bee->user ? irc->user : bu->ui_data, IRC_CDU_PART, NULL );
669
670	return TRUE;
671	}
672
673	static gboolean bee_irc_chat_topic( bee_t bee, struct groupchat c, const char new, bee_user_t bu )
674	{
675	irc_channel_t *ic = c->ui_data;
676	irc_t *irc = bee->ui_data;
677	irc_user_t *iu;
678
679	if( ic == NULL )
680	return FALSE;
681
682	if( bu == NULL )
683	iu = irc->root;
684	else if( bu == bee->user )
685	iu = irc->user;
686	else
687	iu = bu->ui_data;
688
689	irc_channel_set_topic( ic, new, iu );
690
691	return TRUE;
692	}
693
694	static gboolean bee_irc_chat_name_hint( bee_t bee, struct groupchat c, const char *name )
695	{
696	irc_t *irc = bee->ui_data;
697	irc_channel_t ic = c->ui_data, oic;
698	char stripped[MAX_NICK_LENGTH+1], *full_name;
699
700	if( ic == NULL )
701	return FALSE;
702
703	/* Don't rename a channel if the user's in it already. */
704	if( ic->flags & IRC_CHANNEL_JOINED )
705	return FALSE;
706
707	strncpy( stripped, name, MAX_NICK_LENGTH );
708	stripped[MAX_NICK_LENGTH] = '\0';
709	irc_channel_name_strip( stripped );
710	if( set_getbool( &bee->set, "lcnicks" ) )
711	nick_lc( irc, stripped );
712
713	if( stripped[0] == '\0' )
714	return FALSE;
715
716	full_name = g_strdup_printf( "#%s", stripped );
717	if( ( oic = irc_channel_by_name( irc, full_name ) ) )
718	{
719	char type, chat_type;
720
721	type = set_getstr( &oic->set, "type" );
722	chat_type = set_getstr( &oic->set, "chat_type" );
723
724	if( type && chat_type && oic->data == FALSE &&
725	strcmp( type, "chat" ) == 0 &&
726	strcmp( chat_type, "groupchat" ) == 0 )
727	{
728	/* There's a channel with this name already, but it looks
729	like it's not in use yet. Most likely the IRC client
730	rejoined the channel after a reconnect. Remove it so
731	we can reuse its name. */
732	irc_channel_free( oic );
733	}
734	else
735	{
736	g_free( full_name );
737	return FALSE;
738	}
739	}
740
741	g_free( ic->name );
742	ic->name = full_name;
743
744	return TRUE;
745	}
746
747	static gboolean bee_irc_chat_invite( bee_t bee, bee_user_t bu, const char name, const char msg )
748	{
749	char channel, s;
750	irc_t *irc = bee->ui_data;
751	irc_user_t *iu = bu->ui_data;
752	irc_channel_t *chan;
753
754	if( strchr( CTYPES, name[0] ) )
755	channel = g_strdup( name );
756	else
757	channel = g_strdup_printf( "#%s", name );
758
759	if( ( s = strchr( channel, '@' ) ) )
760	*s = '\0';
761
762	if( strlen( channel ) > MAX_NICK_LENGTH )
763	{
764	/* If the channel name is very long (like those insane GTalk
765	UUID names), try if we can use the inviter's nick. */
766	s = g_strdup_printf( "#%s", iu->nick );
767	if( irc_channel_by_name( irc, s ) == NULL )
768	{
769	g_free( channel );
770	channel = s;
771	}
772	}
773
774	if( ( chan = irc_channel_new( irc, channel ) ) &&
775	set_setstr( &chan->set, "type", "chat" ) &&
776	set_setstr( &chan->set, "chat_type", "room" ) &&
777	set_setstr( &chan->set, "account", bu->ic->acc->tag ) &&
778	set_setstr( &chan->set, "room", (char*) name ) )
779	{
780	/* I'm assuming that if the user didn't "chat add" the room
781	himself but got invited, it's temporary, so make this a
782	temporary mapping that is removed as soon as we /PART. */
783	chan->flags \|= IRC_CHANNEL_TEMP;
784	}
785	else
786	{
787	irc_channel_free( chan );
788	chan = NULL;
789	}
790	g_free( channel );
791
792	irc_send_msg_f( iu, "PRIVMSG", irc->user->nick, "<< \002BitlBee\002 - Invitation to chatroom %s >>", name );
793	if( msg )
794	irc_send_msg( iu, "PRIVMSG", irc->user->nick, msg, NULL );
795	if( chan )
796	{
797	irc_send_msg_f( iu, "PRIVMSG", irc->user->nick, "To join the room, just /join %s", chan->name );
798	irc_send_invite( iu, chan );
799	}
800
801	return TRUE;
802	}
803
804	/* IRC->IM */
805	static gboolean bee_irc_channel_chat_privmsg_cb( gpointer data, gint fd, b_input_condition cond );
806
807	static gboolean bee_irc_channel_chat_privmsg( irc_channel_t ic, const char msg )
808	{
809	struct groupchat *c = ic->data;
810	char trans = NULL, s;
811
812	if( c == NULL )
813	return FALSE;
814
815	if( set_getbool( &ic->set, "translate_to_nicks" ) )
816	{
817	char nick[MAX_NICK_LENGTH+1];
818	irc_user_t *iu;
819
820	strncpy( nick, msg, MAX_NICK_LENGTH );
821	nick[MAX_NICK_LENGTH] = '\0';
822	if( ( s = strchr( nick, ':' ) ) \|\| ( s = strchr( nick, ',' ) ) )
823	{
824	*s = '\0';
825	if( ( iu = irc_user_by_name( ic->irc, nick ) ) && iu->bu &&
826	iu->bu->nick && irc_channel_has_user( ic, iu ) )
827	{
828	trans = g_strconcat( iu->bu->nick, msg + ( s - nick ), NULL );
829	msg = trans;
830	}
831	}
832	}
833
834	if( set_getbool( &ic->irc->b->set, "paste_buffer" ) )
835	{
836	int delay;
837
838	if( ic->pastebuf == NULL )
839	ic->pastebuf = g_string_new( msg );
840	else
841	{
842	b_event_remove( ic->pastebuf_timer );
843	g_string_append_printf( ic->pastebuf, "\n%s", msg );
844	}
845
846	if( ( delay = set_getint( &ic->irc->b->set, "paste_buffer_delay" ) ) <= 5 )
847	delay *= 1000;
848
849	ic->pastebuf_timer = b_timeout_add( delay, bee_irc_channel_chat_privmsg_cb, ic );
850
851	g_free( trans );
852	return TRUE;
853	}
854	else
855	bee_chat_msg( ic->irc->b, c, msg, 0 );
856
857	g_free( trans );
858	return TRUE;
859	}
860
861	static gboolean bee_irc_channel_chat_privmsg_cb( gpointer data, gint fd, b_input_condition cond )
862	{
863	irc_channel_t *ic = data;
864
865	if( ic->data )
866	bee_chat_msg( ic->irc->b, ic->data, ic->pastebuf->str, 0 );
867
868	g_string_free( ic->pastebuf, TRUE );
869	ic->pastebuf = 0;
870	ic->pastebuf_timer = 0;
871
872	return FALSE;
873	}
874
875	static gboolean bee_irc_channel_chat_join( irc_channel_t *ic )
876	{
877	char acc_s, room;
878	account_t *acc;
879
880	if( strcmp( set_getstr( &ic->set, "chat_type" ), "room" ) != 0 )
881	return TRUE;
882
883	if( ( acc_s = set_getstr( &ic->set, "account" ) ) &&
884	( room = set_getstr( &ic->set, "room" ) ) &&
885	( acc = account_get( ic->irc->b, acc_s ) ) &&
886	acc->ic && acc->prpl->chat_join )
887	{
888	char *nick;
889
890	if( !( nick = set_getstr( &ic->set, "nick" ) ) )
891	nick = ic->irc->user->nick;
892
893	ic->flags \|= IRC_CHANNEL_CHAT_PICKME;
894	acc->prpl->chat_join( acc->ic, room, nick, NULL, &ic->set );
895	ic->flags &= ~IRC_CHANNEL_CHAT_PICKME;
896
897	return FALSE;
898	}
899	else
900	{
901	irc_send_num( ic->irc, 403, "%s :Can't join channel, account offline?", ic->name );
902	return FALSE;
903	}
904	}
905
906	static gboolean bee_irc_channel_chat_part( irc_channel_t ic, const char msg )
907	{
908	struct groupchat *c = ic->data;
909
910	if( c && c->ic->acc->prpl->chat_leave )
911	c->ic->acc->prpl->chat_leave( c );
912
913	/* Remove the reference. We don't need it anymore. */
914	ic->data = NULL;
915
916	return TRUE;
917	}
918
919	static gboolean bee_irc_channel_chat_topic( irc_channel_t ic, const char new )
920	{
921	struct groupchat *c = ic->data;
922
923	if( c == NULL )
924	return FALSE;
925
926	if( c->ic->acc->prpl->chat_topic == NULL )
927	irc_send_num( ic->irc, 482, "%s :IM network does not support channel topics", ic->name );
928	else
929	{
930	/* TODO: Need more const goodness here, sigh */
931	char *topic = g_strdup( new );
932	c->ic->acc->prpl->chat_topic( c, topic );
933	g_free( topic );
934	}
935
936	/* Whatever happened, the IM module should ack the topic change. */
937	return FALSE;
938	}
939
940	static gboolean bee_irc_channel_chat_invite( irc_channel_t ic, irc_user_t iu )
941	{
942	struct groupchat *c = ic->data;
943	bee_user_t *bu = iu->bu;
944
945	if( bu == NULL )
946	return FALSE;
947
948	if( c )
949	{
950	if( iu->bu->ic != c->ic )
951	irc_send_num( ic->irc, 482, "%s :Can't mix different IM networks in one groupchat", ic->name );
952	else if( c->ic->acc->prpl->chat_invite )
953	c->ic->acc->prpl->chat_invite( c, iu->bu->handle, NULL );
954	else
955	irc_send_num( ic->irc, 482, "%s :IM protocol does not support room invitations", ic->name );
956	}
957	else if( bu->ic->acc->prpl->chat_with &&
958	strcmp( set_getstr( &ic->set, "chat_type" ), "groupchat" ) == 0 )
959	{
960	ic->flags \|= IRC_CHANNEL_CHAT_PICKME;
961	iu->bu->ic->acc->prpl->chat_with( bu->ic, bu->handle );
962	ic->flags &= ~IRC_CHANNEL_CHAT_PICKME;
963	}
964	else
965	{
966	irc_send_num( ic->irc, 482, "%s :IM protocol does not support room invitations", ic->name );
967	}
968
969	return TRUE;
970	}
971
972	static char set_eval_room_account( set_t set, char *value );
973	static char set_eval_chat_type( set_t set, char *value );
974
975	static gboolean bee_irc_channel_init( irc_channel_t *ic )
976	{
977	set_t *s;
978
979	set_add( &ic->set, "account", NULL, set_eval_room_account, ic );
980	set_add( &ic->set, "chat_type", "groupchat", set_eval_chat_type, ic );
981
982	s = set_add( &ic->set, "nick", NULL, NULL, ic );
983	s->flags \|= SET_NULL_OK;
984
985	set_add( &ic->set, "room", NULL, NULL, ic );
986	set_add( &ic->set, "translate_to_nicks", "true", set_eval_bool, ic );
987
988	/* chat_type == groupchat */
989	ic->flags \|= IRC_CHANNEL_TEMP;
990
991	return TRUE;
992	}
993
994	static char set_eval_room_account( set_t set, char *value )
995	{
996	struct irc_channel *ic = set->data;
997	account_t acc, oa;
998
999	if( !( acc = account_get( ic->irc->b, value ) ) )
1000	return SET_INVALID;
1001	else if( !acc->prpl->chat_join )
1002	{
1003	irc_rootmsg( ic->irc, "Named chatrooms not supported on that account." );
1004	return SET_INVALID;
1005	}
1006
1007	if( set->value && ( oa = account_get( ic->irc->b, set->value ) ) &&
1008	oa->prpl->chat_free_settings )
1009	oa->prpl->chat_free_settings( oa, &ic->set );
1010
1011	if( acc->prpl->chat_add_settings )
1012	acc->prpl->chat_add_settings( acc, &ic->set );
1013
1014	return g_strdup( acc->tag );
1015	}
1016
1017	static char set_eval_chat_type( set_t set, char *value )
1018	{
1019	struct irc_channel *ic = set->data;
1020
1021	if( strcmp( value, "groupchat" ) == 0 )
1022	ic->flags \|= IRC_CHANNEL_TEMP;
1023	else if( strcmp( value, "room" ) == 0 )
1024	ic->flags &= ~IRC_CHANNEL_TEMP;
1025	else
1026	return NULL;
1027
1028	return value;
1029	}
1030
1031	static gboolean bee_irc_channel_free( irc_channel_t *ic )
1032	{
1033	struct groupchat *c = ic->data;
1034
1035	set_del( &ic->set, "account" );
1036	set_del( &ic->set, "chat_type" );
1037	set_del( &ic->set, "nick" );
1038	set_del( &ic->set, "room" );
1039	set_del( &ic->set, "translate_to_nicks" );
1040
1041	ic->flags &= ~IRC_CHANNEL_TEMP;
1042
1043	/* That one still points at this channel. Don't. */
1044	if( c )
1045	c->ui_data = NULL;
1046
1047	return TRUE;
1048	}
1049
1050	const struct irc_channel_funcs irc_channel_im_chat_funcs = {
1051	bee_irc_channel_chat_privmsg,
1052	bee_irc_channel_chat_join,
1053	bee_irc_channel_chat_part,
1054	bee_irc_channel_chat_topic,
1055	bee_irc_channel_chat_invite,
1056
1057	bee_irc_channel_init,
1058	bee_irc_channel_free,
1059	};
1060
1061
1062	/* IM->IRC: File transfers */
1063	static file_transfer_t bee_irc_ft_in_start( bee_t bee, bee_user_t bu, const char file_name, size_t file_size )
1064	{
1065	return dccs_send_start( bu->ic, (irc_user_t *) bu->ui_data, file_name, file_size );
1066	}
1067
1068	static gboolean bee_irc_ft_out_start( struct im_connection ic, file_transfer_t ft )
1069	{
1070	return dccs_recv_start( ft );
1071	}
1072
1073	static void bee_irc_ft_close( struct im_connection ic, file_transfer_t ft )
1074	{
1075	return dcc_close( ft );
1076	}
1077
1078	static void bee_irc_ft_finished( struct im_connection ic, file_transfer_t file )
1079	{
1080	dcc_file_transfer_t *df = file->priv;
1081
1082	if( file->bytes_transferred >= file->file_size )
1083	dcc_finish( file );
1084	else
1085	df->proto_finished = TRUE;
1086	}
1087
1088	const struct bee_ui_funcs irc_ui_funcs = {
1089	bee_irc_imc_connected,
1090	bee_irc_imc_disconnected,
1091
1092	bee_irc_user_new,
1093	bee_irc_user_free,
1094	bee_irc_user_fullname,
1095	bee_irc_user_nick_hint,
1096	bee_irc_user_group,
1097	bee_irc_user_status,
1098	bee_irc_user_msg,
1099	bee_irc_user_typing,
1100	bee_irc_user_action_response,
1101
1102	bee_irc_chat_new,
1103	bee_irc_chat_free,
1104	bee_irc_chat_log,
1105	bee_irc_chat_msg,
1106	bee_irc_chat_add_user,
1107	bee_irc_chat_remove_user,
1108	bee_irc_chat_topic,
1109	bee_irc_chat_name_hint,
1110	bee_irc_chat_invite,
1111
1112	bee_irc_ft_in_start,
1113	bee_irc_ft_out_start,
1114	bee_irc_ft_close,
1115	bee_irc_ft_finished,
1116	};

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