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source: protocols/jabber/conference.c @ b56c76c

Last change on this file since b56c76c was fc0640e, checked in by Wilmer van der Gaast <wilmer@…>, at 2012-02-10T18:00:00Z

Support for "nameless" chatrooms on Jabber.

Just join #somechannel and start inviting people. It should Just Work,
like on other IM networks. Works at least with GTalk and with other
servers that have conference stuff installed on conference.$servername.

Property mode set to 100644

File size: 12.4 KB

Line
1	/***************************************************************************\
2	* *
3	* BitlBee - An IRC to IM gateway *
4	* Jabber module - Conference rooms *
5	* *
6	* Copyright 2007 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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