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source: protocols/jabber/jabber.c @ b051d39

Last change on this file since b051d39 was 840bba8, checked in by Wilmer van der Gaast <wilmer@…>, at 2010-03-06T14:50:52Z
The Jabber part of the change. Also made representation of not-away a bit more consistent. Except for free-for-chat, which is nuts anyway.
Property mode set to `100644`
File size: 15.3 KB

Line
1	/***************************************************************************\
2	* *
3	* BitlBee - An IRC to IM gateway *
4	* Jabber module - Main file *
5	* *
6	* Copyright 2006 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 <glib.h>
25	#include <string.h>
26	#include <unistd.h>
27	#include <ctype.h>
28	#include <stdio.h>
29
30	#include "ssl_client.h"
31	#include "xmltree.h"
32	#include "bitlbee.h"
33	#include "jabber.h"
34	#include "md5.h"
35
36	GSList *jabber_connections;
37
38	/* First enty is the default */
39	static const int jabber_port_list[] = {
40	5222,
41	5223,
42	5220,
43	5221,
44	5224,
45	5225,
46	5226,
47	5227,
48	5228,
49	5229,
50	80,
51	443,
52	0
53	};
54
55	static void jabber_init( account_t *acc )
56	{
57	set_t *s;
58	char str[16];
59
60	g_snprintf( str, sizeof( str ), "%d", jabber_port_list[0] );
61	s = set_add( &acc->set, "port", str, set_eval_int, acc );
62	s->flags \|= ACC_SET_OFFLINE_ONLY;
63
64	s = set_add( &acc->set, "priority", "0", set_eval_priority, acc );
65
66	s = set_add( &acc->set, "resource", "BitlBee", NULL, acc );
67	s->flags \|= ACC_SET_OFFLINE_ONLY;
68
69	s = set_add( &acc->set, "resource_select", "priority", NULL, acc );
70
71	s = set_add( &acc->set, "server", NULL, set_eval_account, acc );
72	s->flags \|= ACC_SET_NOSAVE \| ACC_SET_OFFLINE_ONLY \| SET_NULL_OK;
73
74	s = set_add( &acc->set, "ssl", "false", set_eval_bool, acc );
75	s->flags \|= ACC_SET_OFFLINE_ONLY;
76
77	s = set_add( &acc->set, "tls", "try", set_eval_tls, acc );
78	s->flags \|= ACC_SET_OFFLINE_ONLY;
79
80	s = set_add( &acc->set, "xmlconsole", "false", set_eval_bool, acc );
81	s->flags \|= ACC_SET_OFFLINE_ONLY;
82
83	acc->flags \|= ACC_FLAG_AWAY_MESSAGE \| ACC_FLAG_STATUS_MESSAGE;
84	}
85
86	static void jabber_generate_id_hash( struct jabber_data *jd );
87
88	static void jabber_login( account_t *acc )
89	{
90	struct im_connection *ic = imcb_new( acc );
91	struct jabber_data *jd = g_new0( struct jabber_data, 1 );
92	struct ns_srv_reply *srv = NULL;
93	char connect_to, s;
94	int i;
95
96	/* For now this is needed in the _connected() handlers if using
97	GLib event handling, to make sure we're not handling events
98	on dead connections. */
99	jabber_connections = g_slist_prepend( jabber_connections, ic );
100
101	jd->ic = ic;
102	ic->proto_data = jd;
103
104	jd->username = g_strdup( acc->user );
105	jd->server = strchr( jd->username, '@' );
106
107	jd->fd = jd->r_inpa = jd->w_inpa = -1;
108
109	if( jd->server == NULL )
110	{
111	imcb_error( ic, "Incomplete account name (format it like <username@jabberserver.name>)" );
112	imc_logout( ic, FALSE );
113	return;
114	}
115
116	/* So don't think of free()ing jd->server.. :-) */
117	*jd->server = 0;
118	jd->server ++;
119
120	if( ( s = strchr( jd->server, '/' ) ) )
121	{
122	*s = 0;
123	set_setstr( &acc->set, "resource", s + 1 );
124
125	/* Also remove the /resource from the original variable so we
126	won't have to do this again every time. */
127	s = strchr( acc->user, '/' );
128	*s = 0;
129	}
130
131	/* This code isn't really pretty. Backwards compatibility never is... */
132	s = acc->server;
133	while( s )
134	{
135	static int had_port = 0;
136
137	if( strncmp( s, "ssl", 3 ) == 0 )
138	{
139	set_setstr( &acc->set, "ssl", "true" );
140
141	/* Flush this part so that (if this was the first
142	part of the server string) acc->server gets
143	flushed. We don't want to have to do this another
144	time. :-) */
145	*s = 0;
146	s ++;
147
148	/* Only set this if the user didn't specify a custom
149	port number already... */
150	if( !had_port )
151	set_setint( &acc->set, "port", 5223 );
152	}
153	else if( isdigit( *s ) )
154	{
155	int i;
156
157	/* The first character is a digit. It could be an
158	IP address though. Only accept this as a port#
159	if there are only digits. */
160	for( i = 0; isdigit( s[i] ); i ++ );
161
162	/* If the first non-digit character is a colon or
163	the end of the string, save the port number
164	where it should be. */
165	if( s[i] == ':' \|\| s[i] == 0 )
166	{
167	sscanf( s, "%d", &i );
168	set_setint( &acc->set, "port", i );
169
170	/* See above. */
171	*s = 0;
172	s ++;
173	}
174
175	had_port = 1;
176	}
177
178	s = strchr( s, ':' );
179	if( s )
180	{
181	*s = 0;
182	s ++;
183	}
184	}
185
186	jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
187	jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
188
189	/* Figure out the hostname to connect to. */
190	if( acc->server && *acc->server )
191	connect_to = acc->server;
192	else if( ( srv = srv_lookup( "xmpp-client", "tcp", jd->server ) ) \|\|
193	( srv = srv_lookup( "jabber-client", "tcp", jd->server ) ) )
194	connect_to = srv->name;
195	else
196	connect_to = jd->server;
197
198	imcb_log( ic, "Connecting" );
199
200	for( i = 0; jabber_port_list[i] > 0; i ++ )
201	if( set_getint( &acc->set, "port" ) == jabber_port_list[i] )
202	break;
203
204	if( jabber_port_list[i] == 0 )
205	{
206	imcb_log( ic, "Illegal port number" );
207	imc_logout( ic, FALSE );
208	return;
209	}
210
211	/* For non-SSL connections we can try to use the port # from the SRV
212	reply, but let's not do that when using SSL, SSL usually runs on
213	non-standard ports... */
214	if( set_getbool( &acc->set, "ssl" ) )
215	{
216	jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), jabber_connected_ssl, ic );
217	jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1;
218	}
219	else
220	{
221	jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic );
222	}
223	g_free( srv );
224
225	if( jd->fd == -1 )
226	{
227	imcb_error( ic, "Could not connect to server" );
228	imc_logout( ic, TRUE );
229
230	return;
231	}
232
233	if( set_getbool( &acc->set, "xmlconsole" ) )
234	{
235	jd->flags \|= JFLAG_XMLCONSOLE;
236	/* Shouldn't really do this at this stage already, maybe. But
237	I think this shouldn't break anything. */
238	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
239	}
240
241	jabber_generate_id_hash( jd );
242	}
243
244	/* This generates an unfinished md5_state_t variable. Every time we generate
245	an ID, we finish the state by adding a sequence number and take the hash. */
246	static void jabber_generate_id_hash( struct jabber_data *jd )
247	{
248	md5_byte_t binbuf[4];
249	char *s;
250
251	md5_init( &jd->cached_id_prefix );
252	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->username, strlen( jd->username ) );
253	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->server, strlen( jd->server ) );
254	s = set_getstr( &jd->ic->acc->set, "resource" );
255	md5_append( &jd->cached_id_prefix, (unsigned char *) s, strlen( s ) );
256	random_bytes( binbuf, 4 );
257	md5_append( &jd->cached_id_prefix, binbuf, 4 );
258	}
259
260	static void jabber_logout( struct im_connection *ic )
261	{
262	struct jabber_data *jd = ic->proto_data;
263
264	if( jd->fd >= 0 )
265	jabber_end_stream( ic );
266
267	while( ic->groupchats )
268	jabber_chat_free( ic->groupchats );
269
270	if( jd->r_inpa >= 0 )
271	b_event_remove( jd->r_inpa );
272	if( jd->w_inpa >= 0 )
273	b_event_remove( jd->w_inpa );
274
275	if( jd->ssl )
276	ssl_disconnect( jd->ssl );
277	if( jd->fd >= 0 )
278	closesocket( jd->fd );
279
280	if( jd->tx_len )
281	g_free( jd->txq );
282
283	if( jd->node_cache )
284	g_hash_table_destroy( jd->node_cache );
285
286	xt_free( jd->xt );
287
288	g_free( jd->away_message );
289	g_free( jd->username );
290	g_free( jd );
291
292	jabber_connections = g_slist_remove( jabber_connections, ic );
293	}
294
295	static int jabber_buddy_msg( struct im_connection ic, char who, char *message, int flags )
296	{
297	struct jabber_data *jd = ic->proto_data;
298	struct jabber_buddy *bud;
299	struct xt_node *node;
300	char *s;
301	int st;
302
303	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
304	return jabber_write( ic, message, strlen( message ) );
305
306	if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
307	bud = jabber_buddy_by_ext_jid( ic, who, 0 );
308	else
309	bud = jabber_buddy_by_jid( ic, who, 0 );
310
311	node = xt_new_node( "body", message, NULL );
312	node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node );
313
314	if( bud && ( jd->flags & JFLAG_WANT_TYPING ) &&
315	( ( bud->flags & JBFLAG_DOES_XEP85 ) \|\|
316	!( bud->flags & JBFLAG_PROBED_XEP85 ) ) )
317	{
318	struct xt_node *act;
319
320	/* If the user likes typing notification and if we don't know
321	(and didn't probe before) if this resource supports XEP85,
322	include a probe in this packet now. Also, if we know this
323	buddy does support XEP85, we have to send this <active/>
324	tag to tell that the user stopped typing (well, that's what
325	we guess when s/he pressed Enter...). */
326	act = xt_new_node( "active", NULL, NULL );
327	xt_add_attr( act, "xmlns", XMLNS_CHATSTATES );
328	xt_add_child( node, act );
329
330	/* Just make sure we do this only once. */
331	bud->flags \|= JBFLAG_PROBED_XEP85;
332	}
333
334	st = jabber_write_packet( ic, node );
335	xt_free_node( node );
336
337	return st;
338	}
339
340	static GList jabber_away_states( struct im_connection ic )
341	{
342	static GList *l = NULL;
343	int i;
344
345	if( l == NULL )
346	for( i = 0; jabber_away_state_list[i].full_name; i ++ )
347	l = g_list_append( l, (void*) jabber_away_state_list[i].full_name );
348
349	return l;
350	}
351
352	static void jabber_get_info( struct im_connection ic, char who )
353	{
354	struct jabber_data *jd = ic->proto_data;
355	struct jabber_buddy *bud;
356
357	if( strchr( who, '/' ) )
358	bud = jabber_buddy_by_jid( ic, who, 0 );
359	else
360	{
361	char *s = jabber_normalize( who );
362	bud = g_hash_table_lookup( jd->buddies, s );
363	g_free( s );
364	}
365
366	while( bud )
367	{
368	imcb_log( ic, "Buddy %s (%d) information:\nAway state: %s\nAway message: %s",
369	bud->full_jid, bud->priority,
370	bud->away_state ? bud->away_state->full_name : "(none)",
371	bud->away_message ? : "(none)" );
372	bud = bud->next;
373	}
374
375	jabber_get_vcard( ic, bud ? bud->full_jid : who );
376	}
377
378	static void jabber_set_away( struct im_connection ic, char state_txt, char *message )
379	{
380	struct jabber_data *jd = ic->proto_data;
381
382	/* state_txt == NULL -> Not away.
383	Unknown state -> fall back to the first defined away state. */
384	jd->away_state = state_txt ? jabber_away_state_by_name( state_txt )
385	? : jabber_away_state_list : NULL;
386
387	g_free( jd->away_message );
388	jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL;
389
390	presence_send_update( ic );
391	}
392
393	static void jabber_add_buddy( struct im_connection ic, char who, char *group )
394	{
395	struct jabber_data *jd = ic->proto_data;
396
397	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
398	{
399	jd->flags \|= JFLAG_XMLCONSOLE;
400	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
401	return;
402	}
403
404	if( jabber_add_to_roster( ic, who, NULL ) )
405	presence_send_request( ic, who, "subscribe" );
406	}
407
408	static void jabber_remove_buddy( struct im_connection ic, char who, char *group )
409	{
410	struct jabber_data *jd = ic->proto_data;
411
412	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
413	{
414	jd->flags &= ~JFLAG_XMLCONSOLE;
415	/* Not necessary for now. And for now the code isn't too
416	happy if the buddy is completely gone right after calling
417	this function already.
418	imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
419	*/
420	return;
421	}
422
423	/* We should always do this part. Clean up our administration a little bit. */
424	jabber_buddy_remove_bare( ic, who );
425
426	if( jabber_remove_from_roster( ic, who ) )
427	presence_send_request( ic, who, "unsubscribe" );
428	}
429
430	static struct groupchat jabber_chat_join_( struct im_connection ic, const char room, const char nick, const char *password )
431	{
432	if( strchr( room, '@' ) == NULL )
433	imcb_error( ic, "Invalid room name: %s", room );
434	else if( jabber_chat_by_jid( ic, room ) )
435	imcb_error( ic, "Already present in chat `%s'", room );
436	else
437	return jabber_chat_join( ic, room, nick, password );
438
439	return NULL;
440	}
441
442	static void jabber_chat_msg_( struct groupchat c, char message, int flags )
443	{
444	if( c && message )
445	jabber_chat_msg( c, message, flags );
446	}
447
448	static void jabber_chat_topic_( struct groupchat c, char topic )
449	{
450	if( c && topic )
451	jabber_chat_topic( c, topic );
452	}
453
454	static void jabber_chat_leave_( struct groupchat *c )
455	{
456	if( c )
457	jabber_chat_leave( c, NULL );
458	}
459
460	static void jabber_chat_invite_( struct groupchat c, char who, char *msg )
461	{
462	struct jabber_chat *jc = c->data;
463	gchar *msg_alt = NULL;
464
465	if( msg == NULL )
466	msg_alt = g_strdup_printf( "%s invited you to %s", c->ic->acc->user, jc->name );
467
468	if( c && who )
469	jabber_chat_invite( c, who, msg ? msg : msg_alt );
470
471	g_free( msg_alt );
472	}
473
474	static void jabber_keepalive( struct im_connection *ic )
475	{
476	/* Just any whitespace character is enough as a keepalive for XMPP sessions. */
477	jabber_write( ic, "\n", 1 );
478
479	/* This runs the garbage collection every minute, which means every packet
480	is in the cache for about a minute (which should be enough AFAIK). */
481	jabber_cache_clean( ic );
482	}
483
484	static int jabber_send_typing( struct im_connection ic, char who, int typing )
485	{
486	struct jabber_data *jd = ic->proto_data;
487	struct jabber_buddy *bud;
488
489	/* Enable typing notification related code from now. */
490	jd->flags \|= JFLAG_WANT_TYPING;
491
492	if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL )
493	{
494	/* Sending typing notifications to unknown buddies is
495	unsupported for now. Shouldn't be a problem, I think. */
496	return 0;
497	}
498
499	if( bud->flags & JBFLAG_DOES_XEP85 )
500	{
501	/* We're only allowed to send this stuff if we know the other
502	side supports it. */
503
504	struct xt_node *node;
505	char *type;
506	int st;
507
508	if( typing & OPT_TYPING )
509	type = "composing";
510	else if( typing & OPT_THINKING )
511	type = "paused";
512	else
513	type = "active";
514
515	node = xt_new_node( type, NULL, NULL );
516	xt_add_attr( node, "xmlns", XMLNS_CHATSTATES );
517	node = jabber_make_packet( "message", "chat", bud->full_jid, node );
518
519	st = jabber_write_packet( ic, node );
520	xt_free_node( node );
521
522	return st;
523	}
524
525	return 1;
526	}
527
528	void jabber_initmodule()
529	{
530	struct prpl *ret = g_new0( struct prpl, 1 );
531
532	ret->name = "jabber";
533	ret->login = jabber_login;
534	ret->init = jabber_init;
535	ret->logout = jabber_logout;
536	ret->buddy_msg = jabber_buddy_msg;
537	ret->away_states = jabber_away_states;
538	ret->set_away = jabber_set_away;
539	// ret->set_info = jabber_set_info;
540	ret->get_info = jabber_get_info;
541	ret->add_buddy = jabber_add_buddy;
542	ret->remove_buddy = jabber_remove_buddy;
543	ret->chat_msg = jabber_chat_msg_;
544	ret->chat_topic = jabber_chat_topic_;
545	ret->chat_invite = jabber_chat_invite_;
546	ret->chat_leave = jabber_chat_leave_;
547	ret->chat_join = jabber_chat_join_;
548	ret->keepalive = jabber_keepalive;
549	ret->send_typing = jabber_send_typing;
550	ret->handle_cmp = g_strcasecmp;
551
552	register_protocol( ret );
553	}

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