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source: protocols/jabber/jabber.c @ 59c9adb4

Last change on this file since 59c9adb4 was 59c9adb4, checked in by Wilmer van der Gaast <wilmer@…>, at 2011-07-25T12:09:30Z
Kill obsolete Jabber server string (SSL, port#s, etc) parsing.
Property mode set to `100644`
File size: 16.3 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	s = set_add( &acc->set, "activity_timeout", "600", set_eval_int, acc );
61
62	s = set_add( &acc->set, "oauth", "false", set_eval_bool, acc );
63
64	g_snprintf( str, sizeof( str ), "%d", jabber_port_list[0] );
65	s = set_add( &acc->set, "port", str, set_eval_int, acc );
66	s->flags \|= ACC_SET_OFFLINE_ONLY;
67
68	s = set_add( &acc->set, "priority", "0", set_eval_priority, acc );
69
70	s = set_add( &acc->set, "proxy", "<local>;<auto>", NULL, acc );
71
72	s = set_add( &acc->set, "resource", "BitlBee", NULL, acc );
73	s->flags \|= ACC_SET_OFFLINE_ONLY;
74
75	s = set_add( &acc->set, "resource_select", "activity", NULL, acc );
76
77	s = set_add( &acc->set, "server", NULL, set_eval_account, acc );
78	s->flags \|= ACC_SET_NOSAVE \| ACC_SET_OFFLINE_ONLY \| SET_NULL_OK;
79
80	s = set_add( &acc->set, "ssl", "false", set_eval_bool, acc );
81	s->flags \|= ACC_SET_OFFLINE_ONLY;
82
83	s = set_add( &acc->set, "tls", "try", set_eval_tls, acc );
84	s->flags \|= ACC_SET_OFFLINE_ONLY;
85
86	s = set_add( &acc->set, "user_agent", "BitlBee", NULL, acc );
87
88	s = set_add( &acc->set, "xmlconsole", "false", set_eval_bool, acc );
89	s->flags \|= ACC_SET_OFFLINE_ONLY;
90
91	acc->flags \|= ACC_FLAG_AWAY_MESSAGE \| ACC_FLAG_STATUS_MESSAGE;
92	}
93
94	static void jabber_generate_id_hash( struct jabber_data *jd );
95
96	static void jabber_login( account_t *acc )
97	{
98	struct im_connection *ic = imcb_new( acc );
99	struct jabber_data *jd = g_new0( struct jabber_data, 1 );
100	struct ns_srv_reply *srvl = NULL, srv = NULL;
101	char connect_to, s;
102	int i;
103
104	/* For now this is needed in the _connected() handlers if using
105	GLib event handling, to make sure we're not handling events
106	on dead connections. */
107	jabber_connections = g_slist_prepend( jabber_connections, ic );
108
109	jd->ic = ic;
110	ic->proto_data = jd;
111
112	jd->username = g_strdup( acc->user );
113	jd->server = strchr( jd->username, '@' );
114
115	jd->fd = jd->r_inpa = jd->w_inpa = -1;
116
117	if( jd->server == NULL )
118	{
119	imcb_error( ic, "Incomplete account name (format it like <username@jabberserver.name>)" );
120	imc_logout( ic, FALSE );
121	return;
122	}
123
124	/* So don't think of free()ing jd->server.. :-) */
125	*jd->server = 0;
126	jd->server ++;
127
128	if( ( s = strchr( jd->server, '/' ) ) )
129	{
130	*s = 0;
131	set_setstr( &acc->set, "resource", s + 1 );
132
133	/* Also remove the /resource from the original variable so we
134	won't have to do this again every time. */
135	s = strchr( acc->user, '/' );
136	*s = 0;
137	}
138
139	jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
140	jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
141
142	/* Figure out the hostname to connect to. */
143	if( acc->server && *acc->server )
144	connect_to = acc->server;
145	else if( ( srvl = srv_lookup( "xmpp-client", "tcp", jd->server ) ) \|\|
146	( srvl = srv_lookup( "jabber-client", "tcp", jd->server ) ) )
147	{
148	/* Find the lowest-priority one. These usually come
149	back in random/shuffled order. Not looking at
150	weights etc for now. */
151	srv = *srvl;
152	for( i = 1; srvl[i]; i ++ )
153	if( srvl[i]->prio < srv->prio )
154	srv = srvl[i];
155
156	connect_to = srv->name;
157	}
158	else
159	connect_to = jd->server;
160
161	imcb_log( ic, "Connecting" );
162
163	for( i = 0; jabber_port_list[i] > 0; i ++ )
164	if( set_getint( &acc->set, "port" ) == jabber_port_list[i] )
165	break;
166
167	if( jabber_port_list[i] == 0 )
168	{
169	imcb_log( ic, "Illegal port number" );
170	imc_logout( ic, FALSE );
171	return;
172	}
173
174	/* For non-SSL connections we can try to use the port # from the SRV
175	reply, but let's not do that when using SSL, SSL usually runs on
176	non-standard ports... */
177	if( set_getbool( &acc->set, "ssl" ) )
178	{
179	jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), jabber_connected_ssl, ic );
180	jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1;
181	}
182	else
183	{
184	jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic );
185	}
186	srv_free( srvl );
187
188	if( jd->fd == -1 )
189	{
190	imcb_error( ic, "Could not connect to server" );
191	imc_logout( ic, TRUE );
192
193	return;
194	}
195
196	if( set_getbool( &acc->set, "xmlconsole" ) )
197	{
198	jd->flags \|= JFLAG_XMLCONSOLE;
199	/* Shouldn't really do this at this stage already, maybe. But
200	I think this shouldn't break anything. */
201	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
202	}
203
204	jabber_generate_id_hash( jd );
205	}
206
207	/* This generates an unfinished md5_state_t variable. Every time we generate
208	an ID, we finish the state by adding a sequence number and take the hash. */
209	static void jabber_generate_id_hash( struct jabber_data *jd )
210	{
211	md5_byte_t binbuf[4];
212	char *s;
213
214	md5_init( &jd->cached_id_prefix );
215	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->username, strlen( jd->username ) );
216	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->server, strlen( jd->server ) );
217	s = set_getstr( &jd->ic->acc->set, "resource" );
218	md5_append( &jd->cached_id_prefix, (unsigned char *) s, strlen( s ) );
219	random_bytes( binbuf, 4 );
220	md5_append( &jd->cached_id_prefix, binbuf, 4 );
221	}
222
223	static void jabber_logout( struct im_connection *ic )
224	{
225	struct jabber_data *jd = ic->proto_data;
226
227	while( jd->filetransfers )
228	imcb_file_canceled( ic, ( ( struct jabber_transfer *) jd->filetransfers->data )->ft, "Logging out" );
229
230	while( jd->streamhosts )
231	{
232	jabber_streamhost_t *sh = jd->streamhosts->data;
233	jd->streamhosts = g_slist_remove( jd->streamhosts, sh );
234	g_free( sh->jid );
235	g_free( sh->host );
236	g_free( sh );
237	}
238
239	if( jd->fd >= 0 )
240	jabber_end_stream( ic );
241
242	while( ic->groupchats )
243	jabber_chat_free( ic->groupchats->data );
244
245	if( jd->r_inpa >= 0 )
246	b_event_remove( jd->r_inpa );
247	if( jd->w_inpa >= 0 )
248	b_event_remove( jd->w_inpa );
249
250	if( jd->ssl )
251	ssl_disconnect( jd->ssl );
252	if( jd->fd >= 0 )
253	closesocket( jd->fd );
254
255	if( jd->tx_len )
256	g_free( jd->txq );
257
258	if( jd->node_cache )
259	g_hash_table_destroy( jd->node_cache );
260
261	jabber_buddy_remove_all( ic );
262
263	xt_free( jd->xt );
264
265	g_free( jd->away_message );
266	g_free( jd->username );
267	g_free( jd );
268
269	jabber_connections = g_slist_remove( jabber_connections, ic );
270	}
271
272	static int jabber_buddy_msg( struct im_connection ic, char who, char *message, int flags )
273	{
274	struct jabber_data *jd = ic->proto_data;
275	struct jabber_buddy *bud;
276	struct xt_node *node;
277	char *s;
278	int st;
279
280	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
281	return jabber_write( ic, message, strlen( message ) );
282
283	if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
284	bud = jabber_buddy_by_ext_jid( ic, who, 0 );
285	else
286	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_BARE_OK );
287
288	node = xt_new_node( "body", message, NULL );
289	node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node );
290
291	if( bud && ( jd->flags & JFLAG_WANT_TYPING ) &&
292	( ( bud->flags & JBFLAG_DOES_XEP85 ) \|\|
293	!( bud->flags & JBFLAG_PROBED_XEP85 ) ) )
294	{
295	struct xt_node *act;
296
297	/* If the user likes typing notification and if we don't know
298	(and didn't probe before) if this resource supports XEP85,
299	include a probe in this packet now. Also, if we know this
300	buddy does support XEP85, we have to send this <active/>
301	tag to tell that the user stopped typing (well, that's what
302	we guess when s/he pressed Enter...). */
303	act = xt_new_node( "active", NULL, NULL );
304	xt_add_attr( act, "xmlns", XMLNS_CHATSTATES );
305	xt_add_child( node, act );
306
307	/* Just make sure we do this only once. */
308	bud->flags \|= JBFLAG_PROBED_XEP85;
309	}
310
311	st = jabber_write_packet( ic, node );
312	xt_free_node( node );
313
314	return st;
315	}
316
317	static GList jabber_away_states( struct im_connection ic )
318	{
319	static GList *l = NULL;
320	int i;
321
322	if( l == NULL )
323	for( i = 0; jabber_away_state_list[i].full_name; i ++ )
324	l = g_list_append( l, (void*) jabber_away_state_list[i].full_name );
325
326	return l;
327	}
328
329	static void jabber_get_info( struct im_connection ic, char who )
330	{
331	struct jabber_buddy *bud;
332
333	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_FIRST );
334
335	while( bud )
336	{
337	imcb_log( ic, "Buddy %s (%d) information:", bud->full_jid, bud->priority );
338	if( bud->away_state )
339	imcb_log( ic, "Away state: %s", bud->away_state->full_name );
340	imcb_log( ic, "Status message: %s", bud->away_message ? bud->away_message : "(none)" );
341
342	bud = bud->next;
343	}
344
345	jabber_get_vcard( ic, bud ? bud->full_jid : who );
346	}
347
348	static void jabber_set_away( struct im_connection ic, char state_txt, char *message )
349	{
350	struct jabber_data *jd = ic->proto_data;
351
352	/* state_txt == NULL -> Not away.
353	Unknown state -> fall back to the first defined away state. */
354	if( state_txt == NULL )
355	jd->away_state = NULL;
356	else if( ( jd->away_state = jabber_away_state_by_name( state_txt ) ) == NULL )
357	jd->away_state = jabber_away_state_list;
358
359	g_free( jd->away_message );
360	jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL;
361
362	presence_send_update( ic );
363	}
364
365	static void jabber_add_buddy( struct im_connection ic, char who, char *group )
366	{
367	struct jabber_data *jd = ic->proto_data;
368
369	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
370	{
371	jd->flags \|= JFLAG_XMLCONSOLE;
372	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
373	return;
374	}
375
376	if( jabber_add_to_roster( ic, who, NULL, group ) )
377	presence_send_request( ic, who, "subscribe" );
378	}
379
380	static void jabber_remove_buddy( struct im_connection ic, char who, char *group )
381	{
382	struct jabber_data *jd = ic->proto_data;
383
384	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
385	{
386	jd->flags &= ~JFLAG_XMLCONSOLE;
387	/* Not necessary for now. And for now the code isn't too
388	happy if the buddy is completely gone right after calling
389	this function already.
390	imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
391	*/
392	return;
393	}
394
395	/* We should always do this part. Clean up our administration a little bit. */
396	jabber_buddy_remove_bare( ic, who );
397
398	if( jabber_remove_from_roster( ic, who ) )
399	presence_send_request( ic, who, "unsubscribe" );
400	}
401
402	static struct groupchat jabber_chat_join_( struct im_connection ic, const char room, const char nick, const char password, set_t *sets )
403	{
404	if( strchr( room, '@' ) == NULL )
405	imcb_error( ic, "Invalid room name: %s", room );
406	else if( jabber_chat_by_jid( ic, room ) )
407	imcb_error( ic, "Already present in chat `%s'", room );
408	else
409	return jabber_chat_join( ic, room, nick, set_getstr( sets, "password" ) );
410
411	return NULL;
412	}
413
414	static void jabber_chat_msg_( struct groupchat c, char message, int flags )
415	{
416	if( c && message )
417	jabber_chat_msg( c, message, flags );
418	}
419
420	static void jabber_chat_topic_( struct groupchat c, char topic )
421	{
422	if( c && topic )
423	jabber_chat_topic( c, topic );
424	}
425
426	static void jabber_chat_leave_( struct groupchat *c )
427	{
428	if( c )
429	jabber_chat_leave( c, NULL );
430	}
431
432	static void jabber_chat_invite_( struct groupchat c, char who, char *msg )
433	{
434	struct jabber_chat *jc = c->data;
435	gchar *msg_alt = NULL;
436
437	if( msg == NULL )
438	msg_alt = g_strdup_printf( "%s invited you to %s", c->ic->acc->user, jc->name );
439
440	if( c && who )
441	jabber_chat_invite( c, who, msg ? msg : msg_alt );
442
443	g_free( msg_alt );
444	}
445
446	static void jabber_keepalive( struct im_connection *ic )
447	{
448	/* Just any whitespace character is enough as a keepalive for XMPP sessions. */
449	if( !jabber_write( ic, "\n", 1 ) )
450	return;
451
452	/* This runs the garbage collection every minute, which means every packet
453	is in the cache for about a minute (which should be enough AFAIK). */
454	jabber_cache_clean( ic );
455	}
456
457	static int jabber_send_typing( struct im_connection ic, char who, int typing )
458	{
459	struct jabber_data *jd = ic->proto_data;
460	struct jabber_buddy *bud;
461
462	/* Enable typing notification related code from now. */
463	jd->flags \|= JFLAG_WANT_TYPING;
464
465	if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL )
466	{
467	/* Sending typing notifications to unknown buddies is
468	unsupported for now. Shouldn't be a problem, I think. */
469	return 0;
470	}
471
472	if( bud->flags & JBFLAG_DOES_XEP85 )
473	{
474	/* We're only allowed to send this stuff if we know the other
475	side supports it. */
476
477	struct xt_node *node;
478	char *type;
479	int st;
480
481	if( typing & OPT_TYPING )
482	type = "composing";
483	else if( typing & OPT_THINKING )
484	type = "paused";
485	else
486	type = "active";
487
488	node = xt_new_node( type, NULL, NULL );
489	xt_add_attr( node, "xmlns", XMLNS_CHATSTATES );
490	node = jabber_make_packet( "message", "chat", bud->full_jid, node );
491
492	st = jabber_write_packet( ic, node );
493	xt_free_node( node );
494
495	return st;
496	}
497
498	return 1;
499	}
500
501	void jabber_chat_add_settings( account_t acc, set_t *head )
502	{
503	/* Meh. Stupid room passwords. Not trying to obfuscate/hide
504	them from the user for now. */
505	set_add( head, "password", NULL, NULL, NULL );
506	}
507
508	void jabber_chat_free_settings( account_t acc, set_t *head )
509	{
510	set_del( head, "password" );
511	}
512
513	GList jabber_buddy_action_list( bee_user_t bu )
514	{
515	static GList *ret = NULL;
516
517	if( ret == NULL )
518	{
519	static const struct buddy_action ba[2] = {
520	{ "VERSION", "Get client (version) information" },
521	};
522
523	ret = g_list_prepend( ret, (void*) ba + 0 );
524	}
525
526	return ret;
527	}
528
529	void jabber_buddy_action( struct bee_user bu, const char action, char const args[], void *data )
530	{
531	if( g_strcasecmp( action, "VERSION" ) == 0 )
532	{
533	struct jabber_buddy *bud;
534
535	if( ( bud = jabber_buddy_by_ext_jid( bu->ic, bu->handle, 0 ) ) == NULL )
536	bud = jabber_buddy_by_jid( bu->ic, bu->handle, GET_BUDDY_FIRST );
537	for( ; bud; bud = bud->next )
538	jabber_iq_version_send( bu->ic, bud, data );
539	}
540
541	return NULL;
542	}
543
544	void jabber_initmodule()
545	{
546	struct prpl *ret = g_new0( struct prpl, 1 );
547
548	ret->name = "jabber";
549	ret->mms = 0; /* no limit */
550	ret->login = jabber_login;
551	ret->init = jabber_init;
552	ret->logout = jabber_logout;
553	ret->buddy_msg = jabber_buddy_msg;
554	ret->away_states = jabber_away_states;
555	ret->set_away = jabber_set_away;
556	// ret->set_info = jabber_set_info;
557	ret->get_info = jabber_get_info;
558	ret->add_buddy = jabber_add_buddy;
559	ret->remove_buddy = jabber_remove_buddy;
560	ret->chat_msg = jabber_chat_msg_;
561	ret->chat_topic = jabber_chat_topic_;
562	ret->chat_invite = jabber_chat_invite_;
563	ret->chat_leave = jabber_chat_leave_;
564	ret->chat_join = jabber_chat_join_;
565	ret->chat_add_settings = jabber_chat_add_settings;
566	ret->chat_free_settings = jabber_chat_free_settings;
567	ret->keepalive = jabber_keepalive;
568	ret->send_typing = jabber_send_typing;
569	ret->handle_cmp = g_strcasecmp;
570	ret->transfer_request = jabber_si_transfer_request;
571	ret->buddy_action_list = jabber_buddy_action_list;
572	ret->buddy_action = jabber_buddy_action;
573
574	register_protocol( ret );
575	}

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