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source: protocols/jabber/jabber.c @ 23784065

Last change on this file since 23784065 was be609ff, checked in by Wilmer van der Gaast <wilmer@…>, at 2010-03-12T19:10:16Z
Merging mainline.
Property mode set to `100644`
File size: 15.2 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	s = set_add( &acc->set, "activity_timeout", "600", set_eval_int, acc );
61
62	g_snprintf( str, sizeof( str ), "%d", jabber_port_list[0] );
63	s = set_add( &acc->set, "port", str, set_eval_int, acc );
64	s->flags \|= ACC_SET_OFFLINE_ONLY;
65
66	s = set_add( &acc->set, "priority", "0", set_eval_priority, acc );
67
68	s = set_add( &acc->set, "resource", "BitlBee", NULL, acc );
69	s->flags \|= ACC_SET_OFFLINE_ONLY;
70
71	s = set_add( &acc->set, "resource_select", "activity", NULL, acc );
72
73	s = set_add( &acc->set, "server", NULL, set_eval_account, acc );
74	s->flags \|= ACC_SET_NOSAVE \| ACC_SET_OFFLINE_ONLY \| SET_NULL_OK;
75
76	s = set_add( &acc->set, "ssl", "false", set_eval_bool, acc );
77	s->flags \|= ACC_SET_OFFLINE_ONLY;
78
79	s = set_add( &acc->set, "tls", "try", set_eval_tls, acc );
80	s->flags \|= ACC_SET_OFFLINE_ONLY;
81
82	s = set_add( &acc->set, "xmlconsole", "false", set_eval_bool, acc );
83	s->flags \|= ACC_SET_OFFLINE_ONLY;
84
85	acc->flags \|= ACC_FLAG_AWAY_MESSAGE \| ACC_FLAG_STATUS_MESSAGE;
86	}
87
88	static void jabber_generate_id_hash( struct jabber_data *jd );
89
90	static void jabber_login( account_t *acc )
91	{
92	struct im_connection *ic = imcb_new( acc );
93	struct jabber_data *jd = g_new0( struct jabber_data, 1 );
94	struct ns_srv_reply *srv = NULL;
95	char connect_to, s;
96	int i;
97
98	/* For now this is needed in the _connected() handlers if using
99	GLib event handling, to make sure we're not handling events
100	on dead connections. */
101	jabber_connections = g_slist_prepend( jabber_connections, ic );
102
103	jd->ic = ic;
104	ic->proto_data = jd;
105
106	jd->username = g_strdup( acc->user );
107	jd->server = strchr( jd->username, '@' );
108
109	jd->fd = jd->r_inpa = jd->w_inpa = -1;
110
111	if( jd->server == NULL )
112	{
113	imcb_error( ic, "Incomplete account name (format it like <username@jabberserver.name>)" );
114	imc_logout( ic, FALSE );
115	return;
116	}
117
118	/* So don't think of free()ing jd->server.. :-) */
119	*jd->server = 0;
120	jd->server ++;
121
122	if( ( s = strchr( jd->server, '/' ) ) )
123	{
124	*s = 0;
125	set_setstr( &acc->set, "resource", s + 1 );
126
127	/* Also remove the /resource from the original variable so we
128	won't have to do this again every time. */
129	s = strchr( acc->user, '/' );
130	*s = 0;
131	}
132
133	/* This code isn't really pretty. Backwards compatibility never is... */
134	s = acc->server;
135	while( s )
136	{
137	static int had_port = 0;
138
139	if( strncmp( s, "ssl", 3 ) == 0 )
140	{
141	set_setstr( &acc->set, "ssl", "true" );
142
143	/* Flush this part so that (if this was the first
144	part of the server string) acc->server gets
145	flushed. We don't want to have to do this another
146	time. :-) */
147	*s = 0;
148	s ++;
149
150	/* Only set this if the user didn't specify a custom
151	port number already... */
152	if( !had_port )
153	set_setint( &acc->set, "port", 5223 );
154	}
155	else if( isdigit( *s ) )
156	{
157	int i;
158
159	/* The first character is a digit. It could be an
160	IP address though. Only accept this as a port#
161	if there are only digits. */
162	for( i = 0; isdigit( s[i] ); i ++ );
163
164	/* If the first non-digit character is a colon or
165	the end of the string, save the port number
166	where it should be. */
167	if( s[i] == ':' \|\| s[i] == 0 )
168	{
169	sscanf( s, "%d", &i );
170	set_setint( &acc->set, "port", i );
171
172	/* See above. */
173	*s = 0;
174	s ++;
175	}
176
177	had_port = 1;
178	}
179
180	s = strchr( s, ':' );
181	if( s )
182	{
183	*s = 0;
184	s ++;
185	}
186	}
187
188	jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
189	jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
190
191	/* Figure out the hostname to connect to. */
192	if( acc->server && *acc->server )
193	connect_to = acc->server;
194	else if( ( srv = srv_lookup( "xmpp-client", "tcp", jd->server ) ) \|\|
195	( srv = srv_lookup( "jabber-client", "tcp", jd->server ) ) )
196	connect_to = srv->name;
197	else
198	connect_to = jd->server;
199
200	imcb_log( ic, "Connecting" );
201
202	for( i = 0; jabber_port_list[i] > 0; i ++ )
203	if( set_getint( &acc->set, "port" ) == jabber_port_list[i] )
204	break;
205
206	if( jabber_port_list[i] == 0 )
207	{
208	imcb_log( ic, "Illegal port number" );
209	imc_logout( ic, FALSE );
210	return;
211	}
212
213	/* For non-SSL connections we can try to use the port # from the SRV
214	reply, but let's not do that when using SSL, SSL usually runs on
215	non-standard ports... */
216	if( set_getbool( &acc->set, "ssl" ) )
217	{
218	jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), jabber_connected_ssl, ic );
219	jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1;
220	}
221	else
222	{
223	jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic );
224	}
225	g_free( srv );
226
227	if( jd->fd == -1 )
228	{
229	imcb_error( ic, "Could not connect to server" );
230	imc_logout( ic, TRUE );
231
232	return;
233	}
234
235	if( set_getbool( &acc->set, "xmlconsole" ) )
236	{
237	jd->flags \|= JFLAG_XMLCONSOLE;
238	/* Shouldn't really do this at this stage already, maybe. But
239	I think this shouldn't break anything. */
240	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
241	}
242
243	jabber_generate_id_hash( jd );
244	}
245
246	/* This generates an unfinished md5_state_t variable. Every time we generate
247	an ID, we finish the state by adding a sequence number and take the hash. */
248	static void jabber_generate_id_hash( struct jabber_data *jd )
249	{
250	md5_byte_t binbuf[4];
251	char *s;
252
253	md5_init( &jd->cached_id_prefix );
254	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->username, strlen( jd->username ) );
255	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->server, strlen( jd->server ) );
256	s = set_getstr( &jd->ic->acc->set, "resource" );
257	md5_append( &jd->cached_id_prefix, (unsigned char *) s, strlen( s ) );
258	random_bytes( binbuf, 4 );
259	md5_append( &jd->cached_id_prefix, binbuf, 4 );
260	}
261
262	static void jabber_logout( struct im_connection *ic )
263	{
264	struct jabber_data *jd = ic->proto_data;
265
266	if( jd->fd >= 0 )
267	jabber_end_stream( ic );
268
269	while( ic->groupchats )
270	jabber_chat_free( ic->groupchats );
271
272	if( jd->r_inpa >= 0 )
273	b_event_remove( jd->r_inpa );
274	if( jd->w_inpa >= 0 )
275	b_event_remove( jd->w_inpa );
276
277	if( jd->ssl )
278	ssl_disconnect( jd->ssl );
279	if( jd->fd >= 0 )
280	closesocket( jd->fd );
281
282	if( jd->tx_len )
283	g_free( jd->txq );
284
285	if( jd->node_cache )
286	g_hash_table_destroy( jd->node_cache );
287
288	xt_free( jd->xt );
289
290	g_free( jd->away_message );
291	g_free( jd->username );
292	g_free( jd );
293
294	jabber_connections = g_slist_remove( jabber_connections, ic );
295	}
296
297	static int jabber_buddy_msg( struct im_connection ic, char who, char *message, int flags )
298	{
299	struct jabber_data *jd = ic->proto_data;
300	struct jabber_buddy *bud;
301	struct xt_node *node;
302	char *s;
303	int st;
304
305	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
306	return jabber_write( ic, message, strlen( message ) );
307
308	if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
309	bud = jabber_buddy_by_ext_jid( ic, who, 0 );
310	else
311	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_BARE_OK );
312
313	node = xt_new_node( "body", message, NULL );
314	node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node );
315
316	if( bud && ( jd->flags & JFLAG_WANT_TYPING ) &&
317	( ( bud->flags & JBFLAG_DOES_XEP85 ) \|\|
318	!( bud->flags & JBFLAG_PROBED_XEP85 ) ) )
319	{
320	struct xt_node *act;
321
322	/* If the user likes typing notification and if we don't know
323	(and didn't probe before) if this resource supports XEP85,
324	include a probe in this packet now. Also, if we know this
325	buddy does support XEP85, we have to send this <active/>
326	tag to tell that the user stopped typing (well, that's what
327	we guess when s/he pressed Enter...). */
328	act = xt_new_node( "active", NULL, NULL );
329	xt_add_attr( act, "xmlns", XMLNS_CHATSTATES );
330	xt_add_child( node, act );
331
332	/* Just make sure we do this only once. */
333	bud->flags \|= JBFLAG_PROBED_XEP85;
334	}
335
336	st = jabber_write_packet( ic, node );
337	xt_free_node( node );
338
339	return st;
340	}
341
342	static GList jabber_away_states( struct im_connection ic )
343	{
344	static GList *l = NULL;
345	int i;
346
347	if( l == NULL )
348	for( i = 0; jabber_away_state_list[i].full_name; i ++ )
349	l = g_list_append( l, (void*) jabber_away_state_list[i].full_name );
350
351	return l;
352	}
353
354	static void jabber_get_info( struct im_connection ic, char who )
355	{
356	struct jabber_buddy *bud;
357
358	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_FIRST );
359
360	while( bud )
361	{
362	imcb_log( ic, "Buddy %s (%d) information:", bud->full_jid, bud->priority );
363	if( bud->away_state )
364	imcb_log( ic, "Away state: %s", bud->away_state->full_name );
365	imcb_log( ic, "Status message: %s", bud->away_message ? : "(none)" );
366
367	bud = bud->next;
368	}
369
370	jabber_get_vcard( ic, bud ? bud->full_jid : who );
371	}
372
373	static void jabber_set_away( struct im_connection ic, char state_txt, char *message )
374	{
375	struct jabber_data *jd = ic->proto_data;
376
377	/* state_txt == NULL -> Not away.
378	Unknown state -> fall back to the first defined away state. */
379	jd->away_state = state_txt ? jabber_away_state_by_name( state_txt )
380	? : jabber_away_state_list : NULL;
381
382	g_free( jd->away_message );
383	jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL;
384
385	presence_send_update( ic );
386	}
387
388	static void jabber_add_buddy( struct im_connection ic, char who, char *group )
389	{
390	struct jabber_data *jd = ic->proto_data;
391
392	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
393	{
394	jd->flags \|= JFLAG_XMLCONSOLE;
395	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
396	return;
397	}
398
399	if( jabber_add_to_roster( ic, who, NULL ) )
400	presence_send_request( ic, who, "subscribe" );
401	}
402
403	static void jabber_remove_buddy( struct im_connection ic, char who, char *group )
404	{
405	struct jabber_data *jd = ic->proto_data;
406
407	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
408	{
409	jd->flags &= ~JFLAG_XMLCONSOLE;
410	/* Not necessary for now. And for now the code isn't too
411	happy if the buddy is completely gone right after calling
412	this function already.
413	imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
414	*/
415	return;
416	}
417
418	/* We should always do this part. Clean up our administration a little bit. */
419	jabber_buddy_remove_bare( ic, who );
420
421	if( jabber_remove_from_roster( ic, who ) )
422	presence_send_request( ic, who, "unsubscribe" );
423	}
424
425	static struct groupchat jabber_chat_join_( struct im_connection ic, const char room, const char nick, const char *password )
426	{
427	if( strchr( room, '@' ) == NULL )
428	imcb_error( ic, "Invalid room name: %s", room );
429	else if( jabber_chat_by_jid( ic, room ) )
430	imcb_error( ic, "Already present in chat `%s'", room );
431	else
432	return jabber_chat_join( ic, room, nick, password );
433
434	return NULL;
435	}
436
437	static void jabber_chat_msg_( struct groupchat c, char message, int flags )
438	{
439	if( c && message )
440	jabber_chat_msg( c, message, flags );
441	}
442
443	static void jabber_chat_topic_( struct groupchat c, char topic )
444	{
445	if( c && topic )
446	jabber_chat_topic( c, topic );
447	}
448
449	static void jabber_chat_leave_( struct groupchat *c )
450	{
451	if( c )
452	jabber_chat_leave( c, NULL );
453	}
454
455	static void jabber_chat_invite_( struct groupchat c, char who, char *msg )
456	{
457	struct jabber_chat *jc = c->data;
458	gchar *msg_alt = NULL;
459
460	if( msg == NULL )
461	msg_alt = g_strdup_printf( "%s invited you to %s", c->ic->acc->user, jc->name );
462
463	if( c && who )
464	jabber_chat_invite( c, who, msg ? msg : msg_alt );
465
466	g_free( msg_alt );
467	}
468
469	static void jabber_keepalive( struct im_connection *ic )
470	{
471	/* Just any whitespace character is enough as a keepalive for XMPP sessions. */
472	jabber_write( ic, "\n", 1 );
473
474	/* This runs the garbage collection every minute, which means every packet
475	is in the cache for about a minute (which should be enough AFAIK). */
476	jabber_cache_clean( ic );
477	}
478
479	static int jabber_send_typing( struct im_connection ic, char who, int typing )
480	{
481	struct jabber_data *jd = ic->proto_data;
482	struct jabber_buddy *bud;
483
484	/* Enable typing notification related code from now. */
485	jd->flags \|= JFLAG_WANT_TYPING;
486
487	if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL )
488	{
489	/* Sending typing notifications to unknown buddies is
490	unsupported for now. Shouldn't be a problem, I think. */
491	return 0;
492	}
493
494	if( bud->flags & JBFLAG_DOES_XEP85 )
495	{
496	/* We're only allowed to send this stuff if we know the other
497	side supports it. */
498
499	struct xt_node *node;
500	char *type;
501	int st;
502
503	if( typing & OPT_TYPING )
504	type = "composing";
505	else if( typing & OPT_THINKING )
506	type = "paused";
507	else
508	type = "active";
509
510	node = xt_new_node( type, NULL, NULL );
511	xt_add_attr( node, "xmlns", XMLNS_CHATSTATES );
512	node = jabber_make_packet( "message", "chat", bud->full_jid, node );
513
514	st = jabber_write_packet( ic, node );
515	xt_free_node( node );
516
517	return st;
518	}
519
520	return 1;
521	}
522
523	void jabber_initmodule()
524	{
525	struct prpl *ret = g_new0( struct prpl, 1 );
526
527	ret->name = "jabber";
528	ret->login = jabber_login;
529	ret->init = jabber_init;
530	ret->logout = jabber_logout;
531	ret->buddy_msg = jabber_buddy_msg;
532	ret->away_states = jabber_away_states;
533	ret->set_away = jabber_set_away;
534	// ret->set_info = jabber_set_info;
535	ret->get_info = jabber_get_info;
536	ret->add_buddy = jabber_add_buddy;
537	ret->remove_buddy = jabber_remove_buddy;
538	ret->chat_msg = jabber_chat_msg_;
539	ret->chat_topic = jabber_chat_topic_;
540	ret->chat_invite = jabber_chat_invite_;
541	ret->chat_leave = jabber_chat_leave_;
542	ret->chat_join = jabber_chat_join_;
543	ret->keepalive = jabber_keepalive;
544	ret->send_typing = jabber_send_typing;
545	ret->handle_cmp = g_strcasecmp;
546
547	register_protocol( ret );
548	}

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