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source: protocols/jabber/conference.c @ c27a923

Last change on this file since c27a923 was 0e788f5, checked in by Wilmer van der Gaast <wilmer@…>, at 2013-02-21T19:15:59Z
I'm still bored on a long flight. Wrote a script to automatically update my copyright mentions since some were getting pretty stale. Left files not touched since before 2012 alone so that this change doesn't touch almost EVERY source file.
Property mode set to `100644`
File size: 12.4 KB

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1	/***************************************************************************\
2	* *
3	* BitlBee - An IRC to IM gateway *
4	* Jabber module - Conference rooms *
5	* *
6	* Copyright 2007-2012 Wilmer van der Gaast <wilmer@gaast.net> *
7	* *
8	* This program is free software; you can redistribute it and/or modify *
9	* it under the terms of the GNU General Public License as published by *
10	* the Free Software Foundation; either version 2 of the License, or *
11	* (at your option) any later version. *
12	* *
13	* This program is distributed in the hope that it will be useful, *
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16	* GNU General Public License for more details. *
17	* *
18	* You should have received a copy of the GNU General Public License along *
19	* with this program; if not, write to the Free Software Foundation, Inc., *
20	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
21	* *
22	\***************************************************************************/
23
24	#include "jabber.h"
25	#include "sha1.h"
26
27	static xt_status jabber_chat_join_failed( struct im_connection ic, struct xt_node node, struct xt_node *orig );
28
29	struct groupchat jabber_chat_join( struct im_connection ic, const char room, const char nick, const char *password )
30	{
31	struct jabber_chat *jc;
32	struct xt_node *node;
33	struct groupchat *c;
34	char *roomjid;
35
36	roomjid = g_strdup_printf( "%s/%s", room, nick );
37	node = xt_new_node( "x", NULL, NULL );
38	xt_add_attr( node, "xmlns", XMLNS_MUC );
39	if( password )
40	xt_add_child( node, xt_new_node( "password", password, NULL ) );
41	node = jabber_make_packet( "presence", NULL, roomjid, node );
42	jabber_cache_add( ic, node, jabber_chat_join_failed );
43
44	if( !jabber_write_packet( ic, node ) )
45	{
46	g_free( roomjid );
47	return NULL;
48	}
49
50	jc = g_new0( struct jabber_chat, 1 );
51	jc->name = jabber_normalize( room );
52
53	if( ( jc->me = jabber_buddy_add( ic, roomjid ) ) == NULL )
54	{
55	g_free( roomjid );
56	g_free( jc->name );
57	g_free( jc );
58	return NULL;
59	}
60
61	/* roomjid isn't normalized yet, and we need an original version
62	of the nick to send a proper presence update. */
63	jc->my_full_jid = roomjid;
64
65	c = imcb_chat_new( ic, room );
66	c->data = jc;
67
68	return c;
69	}
70
71	struct groupchat jabber_chat_with( struct im_connection ic, char *who )
72	{
73	struct jabber_data *jd = ic->proto_data;
74	struct jabber_chat *jc;
75	struct groupchat *c;
76	sha1_state_t sum;
77	double now = gettime();
78	char uuid, rjid, *cserv;
79
80	sha1_init( &sum );
81	sha1_append( &sum, (uint8_t*) ic->acc->user, strlen( ic->acc->user ) );
82	sha1_append( &sum, (uint8_t*) &now, sizeof( now ) );
83	sha1_append( &sum, (uint8_t*) who, strlen( who ) );
84	uuid = sha1_random_uuid( &sum );
85
86	if( jd->flags & JFLAG_GTALK )
87	cserv = g_strdup( "groupchat.google.com" );
88	else
89	/* Guess... */
90	cserv = g_strdup_printf( "conference.%s", jd->server );
91
92	rjid = g_strdup_printf( "private-chat-%s@%s", uuid, cserv );
93	g_free( uuid );
94	g_free( cserv );
95
96	c = jabber_chat_join( ic, rjid, jd->username, NULL );
97	g_free( rjid );
98	if( c == NULL )
99	return NULL;
100
101	jc = c->data;
102	jc->invite = g_strdup( who );
103
104	return c;
105	}
106
107	static xt_status jabber_chat_join_failed( struct im_connection ic, struct xt_node node, struct xt_node *orig )
108	{
109	struct jabber_error *err;
110	struct jabber_buddy *bud;
111	char *room;
112
113	room = xt_find_attr( orig, "to" );
114	bud = jabber_buddy_by_jid( ic, room, 0 );
115	err = jabber_error_parse( xt_find_node( node->children, "error" ), XMLNS_STANZA_ERROR );
116	if( err )
117	{
118	imcb_error( ic, "Error joining groupchat %s: %s%s%s", room, err->code,
119	err->text ? ": " : "", err->text ? err->text : "" );
120	jabber_error_free( err );
121	}
122	if( bud )
123	jabber_chat_free( jabber_chat_by_jid( ic, bud->bare_jid ) );
124
125	return XT_HANDLED;
126	}
127
128	struct groupchat jabber_chat_by_jid( struct im_connection ic, const char *name )
129	{
130	char *normalized = jabber_normalize( name );
131	GSList *l;
132	struct groupchat *ret;
133	struct jabber_chat *jc;
134
135	for( l = ic->groupchats; l; l = l->next )
136	{
137	ret = l->data;
138	jc = ret->data;
139	if( strcmp( normalized, jc->name ) == 0 )
140	break;
141	}
142	g_free( normalized );
143
144	return l ? ret : NULL;
145	}
146
147	void jabber_chat_free( struct groupchat *c )
148	{
149	struct jabber_chat *jc = c->data;
150
151	jabber_buddy_remove_bare( c->ic, jc->name );
152
153	g_free( jc->my_full_jid );
154	g_free( jc->name );
155	g_free( jc->invite );
156	g_free( jc );
157
158	imcb_chat_free( c );
159	}
160
161	int jabber_chat_msg( struct groupchat c, char message, int flags )
162	{
163	struct im_connection *ic = c->ic;
164	struct jabber_chat *jc = c->data;
165	struct xt_node *node;
166
167	jc->flags \|= JCFLAG_MESSAGE_SENT;
168
169	node = xt_new_node( "body", message, NULL );
170	node = jabber_make_packet( "message", "groupchat", jc->name, node );
171
172	if( !jabber_write_packet( ic, node ) )
173	{
174	xt_free_node( node );
175	return 0;
176	}
177	xt_free_node( node );
178
179	return 1;
180	}
181
182	int jabber_chat_topic( struct groupchat c, char topic )
183	{
184	struct im_connection *ic = c->ic;
185	struct jabber_chat *jc = c->data;
186	struct xt_node *node;
187
188	node = xt_new_node( "subject", topic, NULL );
189	node = jabber_make_packet( "message", "groupchat", jc->name, node );
190
191	if( !jabber_write_packet( ic, node ) )
192	{
193	xt_free_node( node );
194	return 0;
195	}
196	xt_free_node( node );
197
198	return 1;
199	}
200
201	int jabber_chat_leave( struct groupchat c, const char reason )
202	{
203	struct im_connection *ic = c->ic;
204	struct jabber_chat *jc = c->data;
205	struct xt_node *node;
206
207	node = xt_new_node( "x", NULL, NULL );
208	xt_add_attr( node, "xmlns", XMLNS_MUC );
209	node = jabber_make_packet( "presence", "unavailable", jc->my_full_jid, node );
210
211	if( !jabber_write_packet( ic, node ) )
212	{
213	xt_free_node( node );
214	return 0;
215	}
216	xt_free_node( node );
217
218	return 1;
219	}
220
221	void jabber_chat_invite( struct groupchat c, char who, char *message )
222	{
223	struct xt_node *node;
224	struct im_connection *ic = c->ic;
225	struct jabber_chat *jc = c->data;
226
227	node = xt_new_node( "reason", message, NULL );
228
229	node = xt_new_node( "invite", NULL, node );
230	xt_add_attr( node, "to", who );
231
232	node = xt_new_node( "x", NULL, node );
233	xt_add_attr( node, "xmlns", XMLNS_MUC_USER );
234
235	node = jabber_make_packet( "message", NULL, jc->name, node );
236
237	jabber_write_packet( ic, node );
238
239	xt_free_node( node );
240	}
241
242	/* Not really the same syntax as the normal pkt_ functions, but this isn't
243	called by the xmltree parser directly and this way I can add some extra
244	parameters so we won't have to repeat too many things done by the caller
245	already. */
246	void jabber_chat_pkt_presence( struct im_connection ic, struct jabber_buddy bud, struct xt_node *node )
247	{
248	struct groupchat *chat;
249	struct xt_node *c;
250	char *type = xt_find_attr( node, "type" );
251	struct jabber_data *jd = ic->proto_data;
252	struct jabber_chat *jc;
253	char *s;
254
255	if( ( chat = jabber_chat_by_jid( ic, bud->bare_jid ) ) == NULL )
256	{
257	/* How could this happen?? We could do kill( self, 11 )
258	now or just wait for the OS to do it. :-) */
259	return;
260	}
261
262	jc = chat->data;
263
264	if( type == NULL && !( bud->flags & JBFLAG_IS_CHATROOM ) )
265	{
266	bud->flags \|= JBFLAG_IS_CHATROOM;
267	/* If this one wasn't set yet, this buddy just joined the chat.
268	Slightly hackish way of finding out eh? ;-) */
269
270	/* This is pretty messy... Here it sets ext_jid to the real
271	JID of the participant. Works for non-anonymized channels.
272	Might break if someone joins a chat twice, though. */
273	for( c = node->children; ( c = xt_find_node( c, "x" ) ); c = c->next )
274	if( ( s = xt_find_attr( c, "xmlns" ) ) &&
275	( strcmp( s, XMLNS_MUC_USER ) == 0 ) )
276	{
277	struct xt_node *item;
278
279	item = xt_find_node( c->children, "item" );
280	if( ( s = xt_find_attr( item, "jid" ) ) )
281	{
282	/* Yay, found what we need. :-) */
283	bud->ext_jid = jabber_normalize( s );
284	break;
285	}
286	}
287
288	/* Make up some other handle, if necessary. */
289	if( bud->ext_jid == NULL )
290	{
291	if( bud == jc->me )
292	{
293	bud->ext_jid = g_strdup( jd->me );
294	}
295	else
296	{
297	int i;
298
299	/* Don't want the nick to be at the end, so let's
300	think of some slightly different notation to use
301	for anonymous groupchat participants in BitlBee. */
302	bud->ext_jid = g_strdup_printf( "%s=%s", bud->resource, bud->bare_jid );
303
304	/* And strip any unwanted characters. */
305	for( i = 0; bud->resource[i]; i ++ )
306	if( bud->ext_jid[i] == '=' \|\| bud->ext_jid[i] == '@' )
307	bud->ext_jid[i] = '_';
308
309	/* Some program-specific restrictions. */
310	imcb_clean_handle( ic, bud->ext_jid );
311	}
312	bud->flags \|= JBFLAG_IS_ANONYMOUS;
313	}
314
315	if( bud != jc->me && bud->flags & JBFLAG_IS_ANONYMOUS )
316	{
317	/* If JIDs are anonymized, add them to the local
318	list for the duration of this chat. */
319	imcb_add_buddy( ic, bud->ext_jid, NULL );
320	imcb_buddy_nick_hint( ic, bud->ext_jid, bud->resource );
321	}
322
323	if( bud == jc->me && jc->invite != NULL )
324	{
325	char *msg = g_strdup_printf( "Please join me in room %s", jc->name );
326	jabber_chat_invite( chat, jc->invite, msg );
327	g_free( jc->invite );
328	g_free( msg );
329	jc->invite = NULL;
330	}
331
332	s = strchr( bud->ext_jid, '/' );
333	if( s ) s = 0; / Should NEVER be NULL, but who knows... */
334	imcb_chat_add_buddy( chat, bud->ext_jid );
335	if( s ) *s = '/';
336	}
337	else if( type ) /* type can only be NULL or "unavailable" in this function */
338	{
339	if( ( bud->flags & JBFLAG_IS_CHATROOM ) && bud->ext_jid )
340	{
341	s = strchr( bud->ext_jid, '/' );
342	if( s ) *s = 0;
343	imcb_chat_remove_buddy( chat, bud->ext_jid, NULL );
344	if( bud != jc->me && bud->flags & JBFLAG_IS_ANONYMOUS )
345	imcb_remove_buddy( ic, bud->ext_jid, NULL );
346	if( s ) *s = '/';
347	}
348
349	if( bud == jc->me )
350	jabber_chat_free( chat );
351	}
352	}
353
354	void jabber_chat_pkt_message( struct im_connection ic, struct jabber_buddy bud, struct xt_node *node )
355	{
356	struct xt_node *subject = xt_find_node( node->children, "subject" );
357	struct xt_node *body = xt_find_node( node->children, "body" );
358	struct groupchat *chat = bud ? jabber_chat_by_jid( ic, bud->bare_jid ) : NULL;
359	struct jabber_chat *jc = chat ? chat->data : NULL;
360	char *s;
361
362	if( subject && chat )
363	{
364	s = bud ? strchr( bud->ext_jid, '/' ) : NULL;
365	if( s ) *s = 0;
366	imcb_chat_topic( chat, bud ? bud->ext_jid : NULL, subject->text_len > 0 ?
367	subject->text : NULL, jabber_get_timestamp( node ) );
368	if( s ) *s = '/';
369	}
370
371	if( bud == NULL \|\| ( jc && ~jc->flags & JCFLAG_MESSAGE_SENT && bud == jc->me ) )
372	{
373	char *nick;
374
375	if( body == NULL \|\| body->text_len == 0 )
376	/* Meh. Empty messages aren't very interesting, no matter
377	how much some servers love to send them. */
378	return;
379
380	s = xt_find_attr( node, "from" ); /* pkt_message() already NULL-checked this one. */
381	nick = strchr( s, '/' );
382	if( nick )
383	{
384	/* If this message included a resource/nick we don't know,
385	we might still know the groupchat itself. */
386	*nick = 0;
387	chat = jabber_chat_by_jid( ic, s );
388	*nick = '/';
389
390	nick ++;
391	}
392	else
393	{
394	/* message.c uses the EXACT_JID option, so bud should
395	always be NULL here for bare JIDs. */
396	chat = jabber_chat_by_jid( ic, s );
397	}
398
399	if( nick == NULL )
400	{
401	/* This is fine, the groupchat itself isn't in jd->buddies. */
402	if( chat )
403	imcb_chat_log( chat, "From conference server: %s", body->text );
404	else
405	imcb_log( ic, "System message from unknown groupchat %s: %s", s, body->text );
406	}
407	else
408	{
409	/* This can happen too, at least when receiving a backlog when
410	just joining a channel. */
411	if( chat )
412	imcb_chat_log( chat, "Message from unknown participant %s: %s", nick, body->text );
413	else
414	imcb_log( ic, "Groupchat message from unknown JID %s: %s", s, body->text );
415	}
416
417	return;
418	}
419	else if( chat == NULL )
420	{
421	/* How could this happen?? We could do kill( self, 11 )
422	now or just wait for the OS to do it. :-) */
423	return;
424	}
425	if( body && body->text_len > 0 )
426	{
427	s = strchr( bud->ext_jid, '/' );
428	if( s ) *s = 0;
429	imcb_chat_msg( chat, bud->ext_jid, body->text, 0, jabber_get_timestamp( node ) );
430	if( s ) *s = '/';
431	}
432	}

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