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source: protocols/jabber/jabber.c @ b1af3e8

Last change on this file since b1af3e8 was 8b8def58, checked in by Wilmer van der Gaast <wilmer@…>, at 2010-06-24T09:14:34Z
Merging a few revisions from mainline.
Property mode set to `100644`
File size: 15.8 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, "proxy", "<local>;<auto>", NULL, acc );
69
70	s = set_add( &acc->set, "resource", "BitlBee", NULL, acc );
71	s->flags \|= ACC_SET_OFFLINE_ONLY;
72
73	s = set_add( &acc->set, "resource_select", "activity", NULL, acc );
74
75	s = set_add( &acc->set, "server", NULL, set_eval_account, acc );
76	s->flags \|= ACC_SET_NOSAVE \| ACC_SET_OFFLINE_ONLY \| SET_NULL_OK;
77
78	s = set_add( &acc->set, "ssl", "false", set_eval_bool, acc );
79	s->flags \|= ACC_SET_OFFLINE_ONLY;
80
81	s = set_add( &acc->set, "tls", "try", set_eval_tls, acc );
82	s->flags \|= ACC_SET_OFFLINE_ONLY;
83
84	s = set_add( &acc->set, "user_agent", "BitlBee", NULL, acc );
85
86	s = set_add( &acc->set, "xmlconsole", "false", set_eval_bool, acc );
87	s->flags \|= ACC_SET_OFFLINE_ONLY;
88
89	acc->flags \|= ACC_FLAG_AWAY_MESSAGE \| ACC_FLAG_STATUS_MESSAGE;
90	}
91
92	static void jabber_generate_id_hash( struct jabber_data *jd );
93
94	static void jabber_login( account_t *acc )
95	{
96	struct im_connection *ic = imcb_new( acc );
97	struct jabber_data *jd = g_new0( struct jabber_data, 1 );
98	struct ns_srv_reply *srv = NULL;
99	char connect_to, s;
100	int i;
101
102	/* For now this is needed in the _connected() handlers if using
103	GLib event handling, to make sure we're not handling events
104	on dead connections. */
105	jabber_connections = g_slist_prepend( jabber_connections, ic );
106
107	jd->ic = ic;
108	ic->proto_data = jd;
109
110	jd->username = g_strdup( acc->user );
111	jd->server = strchr( jd->username, '@' );
112
113	jd->fd = jd->r_inpa = jd->w_inpa = -1;
114
115	if( jd->server == NULL )
116	{
117	imcb_error( ic, "Incomplete account name (format it like <username@jabberserver.name>)" );
118	imc_logout( ic, FALSE );
119	return;
120	}
121
122	/* So don't think of free()ing jd->server.. :-) */
123	*jd->server = 0;
124	jd->server ++;
125
126	if( ( s = strchr( jd->server, '/' ) ) )
127	{
128	*s = 0;
129	set_setstr( &acc->set, "resource", s + 1 );
130
131	/* Also remove the /resource from the original variable so we
132	won't have to do this again every time. */
133	s = strchr( acc->user, '/' );
134	*s = 0;
135	}
136
137	/* This code isn't really pretty. Backwards compatibility never is... */
138	s = acc->server;
139	while( s )
140	{
141	static int had_port = 0;
142
143	if( strncmp( s, "ssl", 3 ) == 0 )
144	{
145	set_setstr( &acc->set, "ssl", "true" );
146
147	/* Flush this part so that (if this was the first
148	part of the server string) acc->server gets
149	flushed. We don't want to have to do this another
150	time. :-) */
151	*s = 0;
152	s ++;
153
154	/* Only set this if the user didn't specify a custom
155	port number already... */
156	if( !had_port )
157	set_setint( &acc->set, "port", 5223 );
158	}
159	else if( isdigit( *s ) )
160	{
161	int i;
162
163	/* The first character is a digit. It could be an
164	IP address though. Only accept this as a port#
165	if there are only digits. */
166	for( i = 0; isdigit( s[i] ); i ++ );
167
168	/* If the first non-digit character is a colon or
169	the end of the string, save the port number
170	where it should be. */
171	if( s[i] == ':' \|\| s[i] == 0 )
172	{
173	sscanf( s, "%d", &i );
174	set_setint( &acc->set, "port", i );
175
176	/* See above. */
177	*s = 0;
178	s ++;
179	}
180
181	had_port = 1;
182	}
183
184	s = strchr( s, ':' );
185	if( s )
186	{
187	*s = 0;
188	s ++;
189	}
190	}
191
192	jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
193	jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
194
195	/* Figure out the hostname to connect to. */
196	if( acc->server && *acc->server )
197	connect_to = acc->server;
198	else if( ( srv = srv_lookup( "xmpp-client", "tcp", jd->server ) ) \|\|
199	( srv = srv_lookup( "jabber-client", "tcp", jd->server ) ) )
200	connect_to = srv->name;
201	else
202	connect_to = jd->server;
203
204	imcb_log( ic, "Connecting" );
205
206	for( i = 0; jabber_port_list[i] > 0; i ++ )
207	if( set_getint( &acc->set, "port" ) == jabber_port_list[i] )
208	break;
209
210	if( jabber_port_list[i] == 0 )
211	{
212	imcb_log( ic, "Illegal port number" );
213	imc_logout( ic, FALSE );
214	return;
215	}
216
217	/* For non-SSL connections we can try to use the port # from the SRV
218	reply, but let's not do that when using SSL, SSL usually runs on
219	non-standard ports... */
220	if( set_getbool( &acc->set, "ssl" ) )
221	{
222	jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), jabber_connected_ssl, ic );
223	jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1;
224	}
225	else
226	{
227	jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic );
228	}
229	g_free( srv );
230
231	if( jd->fd == -1 )
232	{
233	imcb_error( ic, "Could not connect to server" );
234	imc_logout( ic, TRUE );
235
236	return;
237	}
238
239	if( set_getbool( &acc->set, "xmlconsole" ) )
240	{
241	jd->flags \|= JFLAG_XMLCONSOLE;
242	/* Shouldn't really do this at this stage already, maybe. But
243	I think this shouldn't break anything. */
244	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
245	}
246
247	jabber_generate_id_hash( jd );
248	}
249
250	/* This generates an unfinished md5_state_t variable. Every time we generate
251	an ID, we finish the state by adding a sequence number and take the hash. */
252	static void jabber_generate_id_hash( struct jabber_data *jd )
253	{
254	md5_byte_t binbuf[4];
255	char *s;
256
257	md5_init( &jd->cached_id_prefix );
258	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->username, strlen( jd->username ) );
259	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->server, strlen( jd->server ) );
260	s = set_getstr( &jd->ic->acc->set, "resource" );
261	md5_append( &jd->cached_id_prefix, (unsigned char *) s, strlen( s ) );
262	random_bytes( binbuf, 4 );
263	md5_append( &jd->cached_id_prefix, binbuf, 4 );
264	}
265
266	static void jabber_logout( struct im_connection *ic )
267	{
268	struct jabber_data *jd = ic->proto_data;
269
270	while( jd->filetransfers )
271	imcb_file_canceled( ic, ( ( struct jabber_transfer *) jd->filetransfers->data )->ft, "Logging out" );
272
273	while( jd->streamhosts )
274	{
275	jabber_streamhost_t *sh = jd->streamhosts->data;
276	jd->streamhosts = g_slist_remove( jd->streamhosts, sh );
277	g_free( sh->jid );
278	g_free( sh->host );
279	g_free( sh );
280	}
281
282	if( jd->fd >= 0 )
283	jabber_end_stream( ic );
284
285	while( ic->groupchats )
286	jabber_chat_free( ic->groupchats->data );
287
288	if( jd->r_inpa >= 0 )
289	b_event_remove( jd->r_inpa );
290	if( jd->w_inpa >= 0 )
291	b_event_remove( jd->w_inpa );
292
293	if( jd->ssl )
294	ssl_disconnect( jd->ssl );
295	if( jd->fd >= 0 )
296	closesocket( jd->fd );
297
298	if( jd->tx_len )
299	g_free( jd->txq );
300
301	if( jd->node_cache )
302	g_hash_table_destroy( jd->node_cache );
303
304	jabber_buddy_remove_all( ic );
305
306	xt_free( jd->xt );
307
308	g_free( jd->away_message );
309	g_free( jd->username );
310	g_free( jd );
311
312	jabber_connections = g_slist_remove( jabber_connections, ic );
313	}
314
315	static int jabber_buddy_msg( struct im_connection ic, char who, char *message, int flags )
316	{
317	struct jabber_data *jd = ic->proto_data;
318	struct jabber_buddy *bud;
319	struct xt_node *node;
320	char *s;
321	int st;
322
323	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
324	return jabber_write( ic, message, strlen( message ) );
325
326	if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
327	bud = jabber_buddy_by_ext_jid( ic, who, 0 );
328	else
329	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_BARE_OK );
330
331	node = xt_new_node( "body", message, NULL );
332	node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node );
333
334	if( bud && ( jd->flags & JFLAG_WANT_TYPING ) &&
335	( ( bud->flags & JBFLAG_DOES_XEP85 ) \|\|
336	!( bud->flags & JBFLAG_PROBED_XEP85 ) ) )
337	{
338	struct xt_node *act;
339
340	/* If the user likes typing notification and if we don't know
341	(and didn't probe before) if this resource supports XEP85,
342	include a probe in this packet now. Also, if we know this
343	buddy does support XEP85, we have to send this <active/>
344	tag to tell that the user stopped typing (well, that's what
345	we guess when s/he pressed Enter...). */
346	act = xt_new_node( "active", NULL, NULL );
347	xt_add_attr( act, "xmlns", XMLNS_CHATSTATES );
348	xt_add_child( node, act );
349
350	/* Just make sure we do this only once. */
351	bud->flags \|= JBFLAG_PROBED_XEP85;
352	}
353
354	st = jabber_write_packet( ic, node );
355	xt_free_node( node );
356
357	return st;
358	}
359
360	static GList jabber_away_states( struct im_connection ic )
361	{
362	static GList *l = NULL;
363	int i;
364
365	if( l == NULL )
366	for( i = 0; jabber_away_state_list[i].full_name; i ++ )
367	l = g_list_append( l, (void*) jabber_away_state_list[i].full_name );
368
369	return l;
370	}
371
372	static void jabber_get_info( struct im_connection ic, char who )
373	{
374	struct jabber_buddy *bud;
375
376	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_FIRST );
377
378	while( bud )
379	{
380	imcb_log( ic, "Buddy %s (%d) information:", bud->full_jid, bud->priority );
381	if( bud->away_state )
382	imcb_log( ic, "Away state: %s", bud->away_state->full_name );
383	imcb_log( ic, "Status message: %s", bud->away_message ? : "(none)" );
384
385	bud = bud->next;
386	}
387
388	jabber_get_vcard( ic, bud ? bud->full_jid : who );
389	}
390
391	static void jabber_set_away( struct im_connection ic, char state_txt, char *message )
392	{
393	struct jabber_data *jd = ic->proto_data;
394
395	/* state_txt == NULL -> Not away.
396	Unknown state -> fall back to the first defined away state. */
397	jd->away_state = state_txt ? jabber_away_state_by_name( state_txt )
398	? : jabber_away_state_list : NULL;
399
400	g_free( jd->away_message );
401	jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL;
402
403	presence_send_update( ic );
404	}
405
406	static void jabber_add_buddy( struct im_connection ic, char who, char *group )
407	{
408	struct jabber_data *jd = ic->proto_data;
409
410	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
411	{
412	jd->flags \|= JFLAG_XMLCONSOLE;
413	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
414	return;
415	}
416
417	if( jabber_add_to_roster( ic, who, NULL, group ) )
418	presence_send_request( ic, who, "subscribe" );
419	}
420
421	static void jabber_remove_buddy( struct im_connection ic, char who, char *group )
422	{
423	struct jabber_data *jd = ic->proto_data;
424
425	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
426	{
427	jd->flags &= ~JFLAG_XMLCONSOLE;
428	/* Not necessary for now. And for now the code isn't too
429	happy if the buddy is completely gone right after calling
430	this function already.
431	imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
432	*/
433	return;
434	}
435
436	/* We should always do this part. Clean up our administration a little bit. */
437	jabber_buddy_remove_bare( ic, who );
438
439	if( jabber_remove_from_roster( ic, who ) )
440	presence_send_request( ic, who, "unsubscribe" );
441	}
442
443	static struct groupchat jabber_chat_join_( struct im_connection ic, const char room, const char nick, const char *password )
444	{
445	if( strchr( room, '@' ) == NULL )
446	imcb_error( ic, "Invalid room name: %s", room );
447	else if( jabber_chat_by_jid( ic, room ) )
448	imcb_error( ic, "Already present in chat `%s'", room );
449	else
450	return jabber_chat_join( ic, room, nick, password );
451
452	return NULL;
453	}
454
455	static void jabber_chat_msg_( struct groupchat c, char message, int flags )
456	{
457	if( c && message )
458	jabber_chat_msg( c, message, flags );
459	}
460
461	static void jabber_chat_topic_( struct groupchat c, char topic )
462	{
463	if( c && topic )
464	jabber_chat_topic( c, topic );
465	}
466
467	static void jabber_chat_leave_( struct groupchat *c )
468	{
469	if( c )
470	jabber_chat_leave( c, NULL );
471	}
472
473	static void jabber_chat_invite_( struct groupchat c, char who, char *msg )
474	{
475	struct jabber_chat *jc = c->data;
476	gchar *msg_alt = NULL;
477
478	if( msg == NULL )
479	msg_alt = g_strdup_printf( "%s invited you to %s", c->ic->acc->user, jc->name );
480
481	if( c && who )
482	jabber_chat_invite( c, who, msg ? msg : msg_alt );
483
484	g_free( msg_alt );
485	}
486
487	static void jabber_keepalive( struct im_connection *ic )
488	{
489	/* Just any whitespace character is enough as a keepalive for XMPP sessions. */
490	if( !jabber_write( ic, "\n", 1 ) )
491	return;
492
493	/* This runs the garbage collection every minute, which means every packet
494	is in the cache for about a minute (which should be enough AFAIK). */
495	jabber_cache_clean( ic );
496	}
497
498	static int jabber_send_typing( struct im_connection ic, char who, int typing )
499	{
500	struct jabber_data *jd = ic->proto_data;
501	struct jabber_buddy *bud;
502
503	/* Enable typing notification related code from now. */
504	jd->flags \|= JFLAG_WANT_TYPING;
505
506	if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL )
507	{
508	/* Sending typing notifications to unknown buddies is
509	unsupported for now. Shouldn't be a problem, I think. */
510	return 0;
511	}
512
513	if( bud->flags & JBFLAG_DOES_XEP85 )
514	{
515	/* We're only allowed to send this stuff if we know the other
516	side supports it. */
517
518	struct xt_node *node;
519	char *type;
520	int st;
521
522	if( typing & OPT_TYPING )
523	type = "composing";
524	else if( typing & OPT_THINKING )
525	type = "paused";
526	else
527	type = "active";
528
529	node = xt_new_node( type, NULL, NULL );
530	xt_add_attr( node, "xmlns", XMLNS_CHATSTATES );
531	node = jabber_make_packet( "message", "chat", bud->full_jid, node );
532
533	st = jabber_write_packet( ic, node );
534	xt_free_node( node );
535
536	return st;
537	}
538
539	return 1;
540	}
541
542	void jabber_initmodule()
543	{
544	struct prpl *ret = g_new0( struct prpl, 1 );
545
546	ret->name = "jabber";
547	ret->login = jabber_login;
548	ret->init = jabber_init;
549	ret->logout = jabber_logout;
550	ret->buddy_msg = jabber_buddy_msg;
551	ret->away_states = jabber_away_states;
552	ret->set_away = jabber_set_away;
553	// ret->set_info = jabber_set_info;
554	ret->get_info = jabber_get_info;
555	ret->add_buddy = jabber_add_buddy;
556	ret->remove_buddy = jabber_remove_buddy;
557	ret->chat_msg = jabber_chat_msg_;
558	ret->chat_topic = jabber_chat_topic_;
559	ret->chat_invite = jabber_chat_invite_;
560	ret->chat_leave = jabber_chat_leave_;
561	ret->chat_join = jabber_chat_join_;
562	ret->keepalive = jabber_keepalive;
563	ret->send_typing = jabber_send_typing;
564	ret->handle_cmp = g_strcasecmp;
565	ret->transfer_request = jabber_si_transfer_request;
566
567	register_protocol( ret );
568	}

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