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source: protocols/jabber/jabber.c @ f1c870a

Last change on this file since f1c870a was 06b5893, checked in by Wilmer van der Gaast <wilmer@…>, at 2011-12-07T21:47:25Z
Merging non-SASL authentication patch from #863. This also implements hidden-default settings, which means a setting is hidden unless it was changed from the default. This seems like appropriate behaviour for something as obscure as this.
Property mode set to `100644`
File size: 17.5 KB

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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, "sasl", "true", set_eval_bool, acc );
85	s->flags \|= ACC_SET_OFFLINE_ONLY \| SET_HIDDEN_DEFAULT;
86
87	s = set_add( &acc->set, "user_agent", "BitlBee", NULL, acc );
88
89	s = set_add( &acc->set, "xmlconsole", "false", set_eval_bool, acc );
90	s->flags \|= ACC_SET_OFFLINE_ONLY;
91
92	acc->flags \|= ACC_FLAG_AWAY_MESSAGE \| ACC_FLAG_STATUS_MESSAGE;
93	}
94
95	static void jabber_generate_id_hash( struct jabber_data *jd );
96
97	static void jabber_login( account_t *acc )
98	{
99	struct im_connection *ic = imcb_new( acc );
100	struct jabber_data *jd = g_new0( struct jabber_data, 1 );
101	struct ns_srv_reply *srvl = NULL, srv = NULL;
102	char connect_to, s;
103	int i;
104
105	/* For now this is needed in the _connected() handlers if using
106	GLib event handling, to make sure we're not handling events
107	on dead connections. */
108	jabber_connections = g_slist_prepend( jabber_connections, ic );
109
110	jd->ic = ic;
111	ic->proto_data = jd;
112
113	jd->username = g_strdup( acc->user );
114	jd->server = strchr( jd->username, '@' );
115
116	jd->fd = jd->r_inpa = jd->w_inpa = -1;
117
118	if( jd->server == NULL )
119	{
120	imcb_error( ic, "Incomplete account name (format it like <username@jabberserver.name>)" );
121	imc_logout( ic, FALSE );
122	return;
123	}
124
125	/* So don't think of free()ing jd->server.. :-) */
126	*jd->server = 0;
127	jd->server ++;
128
129	if( ( s = strchr( jd->server, '/' ) ) )
130	{
131	*s = 0;
132	set_setstr( &acc->set, "resource", s + 1 );
133
134	/* Also remove the /resource from the original variable so we
135	won't have to do this again every time. */
136	s = strchr( acc->user, '/' );
137	*s = 0;
138	}
139
140	/* This code isn't really pretty. Backwards compatibility never is... */
141	s = acc->server;
142	while( s )
143	{
144	static int had_port = 0;
145
146	if( strncmp( s, "ssl", 3 ) == 0 )
147	{
148	set_setstr( &acc->set, "ssl", "true" );
149
150	/* Flush this part so that (if this was the first
151	part of the server string) acc->server gets
152	flushed. We don't want to have to do this another
153	time. :-) */
154	*s = 0;
155	s ++;
156
157	/* Only set this if the user didn't specify a custom
158	port number already... */
159	if( !had_port )
160	set_setint( &acc->set, "port", 5223 );
161	}
162	else if( isdigit( *s ) )
163	{
164	int i;
165
166	/* The first character is a digit. It could be an
167	IP address though. Only accept this as a port#
168	if there are only digits. */
169	for( i = 0; isdigit( s[i] ); i ++ );
170
171	/* If the first non-digit character is a colon or
172	the end of the string, save the port number
173	where it should be. */
174	if( s[i] == ':' \|\| s[i] == 0 )
175	{
176	sscanf( s, "%d", &i );
177	set_setint( &acc->set, "port", i );
178
179	/* See above. */
180	*s = 0;
181	s ++;
182	}
183
184	had_port = 1;
185	}
186
187	s = strchr( s, ':' );
188	if( s )
189	{
190	*s = 0;
191	s ++;
192	}
193	}
194
195	jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
196	jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
197
198	/* Figure out the hostname to connect to. */
199	if( acc->server && *acc->server )
200	connect_to = acc->server;
201	else if( ( srvl = srv_lookup( "xmpp-client", "tcp", jd->server ) ) \|\|
202	( srvl = srv_lookup( "jabber-client", "tcp", jd->server ) ) )
203	{
204	/* Find the lowest-priority one. These usually come
205	back in random/shuffled order. Not looking at
206	weights etc for now. */
207	srv = *srvl;
208	for( i = 1; srvl[i]; i ++ )
209	if( srvl[i]->prio < srv->prio )
210	srv = srvl[i];
211
212	connect_to = srv->name;
213	}
214	else
215	connect_to = jd->server;
216
217	imcb_log( ic, "Connecting" );
218
219	for( i = 0; jabber_port_list[i] > 0; i ++ )
220	if( set_getint( &acc->set, "port" ) == jabber_port_list[i] )
221	break;
222
223	if( jabber_port_list[i] == 0 )
224	{
225	imcb_log( ic, "Illegal port number" );
226	imc_logout( ic, FALSE );
227	return;
228	}
229
230	/* For non-SSL connections we can try to use the port # from the SRV
231	reply, but let's not do that when using SSL, SSL usually runs on
232	non-standard ports... */
233	if( set_getbool( &acc->set, "ssl" ) )
234	{
235	jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), jabber_connected_ssl, ic );
236	jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1;
237	}
238	else
239	{
240	jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic );
241	}
242	srv_free( srvl );
243
244	if( jd->fd == -1 )
245	{
246	imcb_error( ic, "Could not connect to server" );
247	imc_logout( ic, TRUE );
248
249	return;
250	}
251
252	if( set_getbool( &acc->set, "xmlconsole" ) )
253	{
254	jd->flags \|= JFLAG_XMLCONSOLE;
255	/* Shouldn't really do this at this stage already, maybe. But
256	I think this shouldn't break anything. */
257	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
258	}
259
260	jabber_generate_id_hash( jd );
261	}
262
263	/* This generates an unfinished md5_state_t variable. Every time we generate
264	an ID, we finish the state by adding a sequence number and take the hash. */
265	static void jabber_generate_id_hash( struct jabber_data *jd )
266	{
267	md5_byte_t binbuf[4];
268	char *s;
269
270	md5_init( &jd->cached_id_prefix );
271	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->username, strlen( jd->username ) );
272	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->server, strlen( jd->server ) );
273	s = set_getstr( &jd->ic->acc->set, "resource" );
274	md5_append( &jd->cached_id_prefix, (unsigned char *) s, strlen( s ) );
275	random_bytes( binbuf, 4 );
276	md5_append( &jd->cached_id_prefix, binbuf, 4 );
277	}
278
279	static void jabber_logout( struct im_connection *ic )
280	{
281	struct jabber_data *jd = ic->proto_data;
282
283	while( jd->filetransfers )
284	imcb_file_canceled( ic, ( ( struct jabber_transfer *) jd->filetransfers->data )->ft, "Logging out" );
285
286	while( jd->streamhosts )
287	{
288	jabber_streamhost_t *sh = jd->streamhosts->data;
289	jd->streamhosts = g_slist_remove( jd->streamhosts, sh );
290	g_free( sh->jid );
291	g_free( sh->host );
292	g_free( sh );
293	}
294
295	if( jd->fd >= 0 )
296	jabber_end_stream( ic );
297
298	while( ic->groupchats )
299	jabber_chat_free( ic->groupchats->data );
300
301	if( jd->r_inpa >= 0 )
302	b_event_remove( jd->r_inpa );
303	if( jd->w_inpa >= 0 )
304	b_event_remove( jd->w_inpa );
305
306	if( jd->ssl )
307	ssl_disconnect( jd->ssl );
308	if( jd->fd >= 0 )
309	closesocket( jd->fd );
310
311	if( jd->tx_len )
312	g_free( jd->txq );
313
314	if( jd->node_cache )
315	g_hash_table_destroy( jd->node_cache );
316
317	jabber_buddy_remove_all( ic );
318
319	xt_free( jd->xt );
320
321	g_free( jd->away_message );
322	g_free( jd->username );
323	g_free( jd );
324
325	jabber_connections = g_slist_remove( jabber_connections, ic );
326	}
327
328	static int jabber_buddy_msg( struct im_connection ic, char who, char *message, int flags )
329	{
330	struct jabber_data *jd = ic->proto_data;
331	struct jabber_buddy *bud;
332	struct xt_node *node;
333	char *s;
334	int st;
335
336	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
337	return jabber_write( ic, message, strlen( message ) );
338
339	if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
340	bud = jabber_buddy_by_ext_jid( ic, who, 0 );
341	else
342	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_BARE_OK );
343
344	node = xt_new_node( "body", message, NULL );
345	node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node );
346
347	if( bud && ( jd->flags & JFLAG_WANT_TYPING ) &&
348	( ( bud->flags & JBFLAG_DOES_XEP85 ) \|\|
349	!( bud->flags & JBFLAG_PROBED_XEP85 ) ) )
350	{
351	struct xt_node *act;
352
353	/* If the user likes typing notification and if we don't know
354	(and didn't probe before) if this resource supports XEP85,
355	include a probe in this packet now. Also, if we know this
356	buddy does support XEP85, we have to send this <active/>
357	tag to tell that the user stopped typing (well, that's what
358	we guess when s/he pressed Enter...). */
359	act = xt_new_node( "active", NULL, NULL );
360	xt_add_attr( act, "xmlns", XMLNS_CHATSTATES );
361	xt_add_child( node, act );
362
363	/* Just make sure we do this only once. */
364	bud->flags \|= JBFLAG_PROBED_XEP85;
365	}
366
367	st = jabber_write_packet( ic, node );
368	xt_free_node( node );
369
370	return st;
371	}
372
373	static GList jabber_away_states( struct im_connection ic )
374	{
375	static GList *l = NULL;
376	int i;
377
378	if( l == NULL )
379	for( i = 0; jabber_away_state_list[i].full_name; i ++ )
380	l = g_list_append( l, (void*) jabber_away_state_list[i].full_name );
381
382	return l;
383	}
384
385	static void jabber_get_info( struct im_connection ic, char who )
386	{
387	struct jabber_buddy *bud;
388
389	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_FIRST );
390
391	while( bud )
392	{
393	imcb_log( ic, "Buddy %s (%d) information:", bud->full_jid, bud->priority );
394	if( bud->away_state )
395	imcb_log( ic, "Away state: %s", bud->away_state->full_name );
396	imcb_log( ic, "Status message: %s", bud->away_message ? bud->away_message : "(none)" );
397
398	bud = bud->next;
399	}
400
401	jabber_get_vcard( ic, bud ? bud->full_jid : who );
402	}
403
404	static void jabber_set_away( struct im_connection ic, char state_txt, char *message )
405	{
406	struct jabber_data *jd = ic->proto_data;
407
408	/* state_txt == NULL -> Not away.
409	Unknown state -> fall back to the first defined away state. */
410	if( state_txt == NULL )
411	jd->away_state = NULL;
412	else if( ( jd->away_state = jabber_away_state_by_name( state_txt ) ) == NULL )
413	jd->away_state = jabber_away_state_list;
414
415	g_free( jd->away_message );
416	jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL;
417
418	presence_send_update( ic );
419	}
420
421	static void jabber_add_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	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
429	return;
430	}
431
432	if( jabber_add_to_roster( ic, who, NULL, group ) )
433	presence_send_request( ic, who, "subscribe" );
434	}
435
436	static void jabber_remove_buddy( struct im_connection ic, char who, char *group )
437	{
438	struct jabber_data *jd = ic->proto_data;
439
440	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
441	{
442	jd->flags &= ~JFLAG_XMLCONSOLE;
443	/* Not necessary for now. And for now the code isn't too
444	happy if the buddy is completely gone right after calling
445	this function already.
446	imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
447	*/
448	return;
449	}
450
451	/* We should always do this part. Clean up our administration a little bit. */
452	jabber_buddy_remove_bare( ic, who );
453
454	if( jabber_remove_from_roster( ic, who ) )
455	presence_send_request( ic, who, "unsubscribe" );
456	}
457
458	static struct groupchat jabber_chat_join_( struct im_connection ic, const char room, const char nick, const char password, set_t *sets )
459	{
460	if( strchr( room, '@' ) == NULL )
461	imcb_error( ic, "Invalid room name: %s", room );
462	else if( jabber_chat_by_jid( ic, room ) )
463	imcb_error( ic, "Already present in chat `%s'", room );
464	else
465	return jabber_chat_join( ic, room, nick, set_getstr( sets, "password" ) );
466
467	return NULL;
468	}
469
470	static void jabber_chat_msg_( struct groupchat c, char message, int flags )
471	{
472	if( c && message )
473	jabber_chat_msg( c, message, flags );
474	}
475
476	static void jabber_chat_topic_( struct groupchat c, char topic )
477	{
478	if( c && topic )
479	jabber_chat_topic( c, topic );
480	}
481
482	static void jabber_chat_leave_( struct groupchat *c )
483	{
484	if( c )
485	jabber_chat_leave( c, NULL );
486	}
487
488	static void jabber_chat_invite_( struct groupchat c, char who, char *msg )
489	{
490	struct jabber_chat *jc = c->data;
491	gchar *msg_alt = NULL;
492
493	if( msg == NULL )
494	msg_alt = g_strdup_printf( "%s invited you to %s", c->ic->acc->user, jc->name );
495
496	if( c && who )
497	jabber_chat_invite( c, who, msg ? msg : msg_alt );
498
499	g_free( msg_alt );
500	}
501
502	static void jabber_keepalive( struct im_connection *ic )
503	{
504	/* Just any whitespace character is enough as a keepalive for XMPP sessions. */
505	if( !jabber_write( ic, "\n", 1 ) )
506	return;
507
508	/* This runs the garbage collection every minute, which means every packet
509	is in the cache for about a minute (which should be enough AFAIK). */
510	jabber_cache_clean( ic );
511	}
512
513	static int jabber_send_typing( struct im_connection ic, char who, int typing )
514	{
515	struct jabber_data *jd = ic->proto_data;
516	struct jabber_buddy *bud;
517
518	/* Enable typing notification related code from now. */
519	jd->flags \|= JFLAG_WANT_TYPING;
520
521	if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL )
522	{
523	/* Sending typing notifications to unknown buddies is
524	unsupported for now. Shouldn't be a problem, I think. */
525	return 0;
526	}
527
528	if( bud->flags & JBFLAG_DOES_XEP85 )
529	{
530	/* We're only allowed to send this stuff if we know the other
531	side supports it. */
532
533	struct xt_node *node;
534	char *type;
535	int st;
536
537	if( typing & OPT_TYPING )
538	type = "composing";
539	else if( typing & OPT_THINKING )
540	type = "paused";
541	else
542	type = "active";
543
544	node = xt_new_node( type, NULL, NULL );
545	xt_add_attr( node, "xmlns", XMLNS_CHATSTATES );
546	node = jabber_make_packet( "message", "chat", bud->full_jid, node );
547
548	st = jabber_write_packet( ic, node );
549	xt_free_node( node );
550
551	return st;
552	}
553
554	return 1;
555	}
556
557	void jabber_chat_add_settings( account_t acc, set_t *head )
558	{
559	/* Meh. Stupid room passwords. Not trying to obfuscate/hide
560	them from the user for now. */
561	set_add( head, "password", NULL, NULL, NULL );
562	}
563
564	void jabber_chat_free_settings( account_t acc, set_t *head )
565	{
566	set_del( head, "password" );
567	}
568
569	GList jabber_buddy_action_list( bee_user_t bu )
570	{
571	static GList *ret = NULL;
572
573	if( ret == NULL )
574	{
575	static const struct buddy_action ba[2] = {
576	{ "VERSION", "Get client (version) information" },
577	};
578
579	ret = g_list_prepend( ret, (void*) ba + 0 );
580	}
581
582	return ret;
583	}
584
585	void jabber_buddy_action( struct bee_user bu, const char action, char const args[], void *data )
586	{
587	if( g_strcasecmp( action, "VERSION" ) == 0 )
588	{
589	struct jabber_buddy *bud;
590
591	if( ( bud = jabber_buddy_by_ext_jid( bu->ic, bu->handle, 0 ) ) == NULL )
592	bud = jabber_buddy_by_jid( bu->ic, bu->handle, GET_BUDDY_FIRST );
593	for( ; bud; bud = bud->next )
594	jabber_iq_version_send( bu->ic, bud, data );
595	}
596
597	return NULL;
598	}
599
600	void jabber_initmodule()
601	{
602	struct prpl *ret = g_new0( struct prpl, 1 );
603
604	ret->name = "jabber";
605	ret->mms = 0; /* no limit */
606	ret->login = jabber_login;
607	ret->init = jabber_init;
608	ret->logout = jabber_logout;
609	ret->buddy_msg = jabber_buddy_msg;
610	ret->away_states = jabber_away_states;
611	ret->set_away = jabber_set_away;
612	// ret->set_info = jabber_set_info;
613	ret->get_info = jabber_get_info;
614	ret->add_buddy = jabber_add_buddy;
615	ret->remove_buddy = jabber_remove_buddy;
616	ret->chat_msg = jabber_chat_msg_;
617	ret->chat_topic = jabber_chat_topic_;
618	ret->chat_invite = jabber_chat_invite_;
619	ret->chat_leave = jabber_chat_leave_;
620	ret->chat_join = jabber_chat_join_;
621	ret->chat_add_settings = jabber_chat_add_settings;
622	ret->chat_free_settings = jabber_chat_free_settings;
623	ret->keepalive = jabber_keepalive;
624	ret->send_typing = jabber_send_typing;
625	ret->handle_cmp = g_strcasecmp;
626	ret->transfer_request = jabber_si_transfer_request;
627	ret->buddy_action_list = jabber_buddy_action_list;
628	ret->buddy_action = jabber_buddy_action;
629
630	register_protocol( ret );
631	}

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