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source: protocols/jabber/jabber.c @ 3e6764a

Last change on this file since 3e6764a was 7f69740, checked in by Wilmer van der Gaast <wilmer@…>, at 2008-06-15T18:11:47Z
Using a port list instead of a single range for the allowed Jabber port numbers, adding 80 and 443. Partially closes #265.
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	#include "base64.h"
36
37	GSList *jabber_connections;
38
39	/* First enty is the default */
40	static const int jabber_port_list[] = {
41	5222,
42	5223,
43	5220,
44	5221,
45	5224,
46	5225,
47	5226,
48	5227,
49	5228,
50	5229,
51	80,
52	443,
53	0
54	};
55
56	static void jabber_init( account_t *acc )
57	{
58	set_t *s;
59	char str[16];
60
61	g_snprintf( str, sizeof( str ), "%d", jabber_port_list[0] );
62	s = set_add( &acc->set, "port", str, set_eval_int, acc );
63	s->flags \|= ACC_SET_OFFLINE_ONLY;
64
65	s = set_add( &acc->set, "priority", "0", set_eval_priority, acc );
66
67	s = set_add( &acc->set, "resource", "BitlBee", NULL, acc );
68	s->flags \|= ACC_SET_OFFLINE_ONLY;
69
70	s = set_add( &acc->set, "resource_select", "priority", NULL, acc );
71
72	s = set_add( &acc->set, "server", NULL, set_eval_account, acc );
73	s->flags \|= ACC_SET_NOSAVE \| ACC_SET_OFFLINE_ONLY;
74
75	s = set_add( &acc->set, "ssl", "false", set_eval_bool, acc );
76	s->flags \|= ACC_SET_OFFLINE_ONLY;
77
78	s = set_add( &acc->set, "tls", "try", set_eval_tls, acc );
79	s->flags \|= ACC_SET_OFFLINE_ONLY;
80
81	s = set_add( &acc->set, "xmlconsole", "false", set_eval_bool, acc );
82	s->flags \|= ACC_SET_OFFLINE_ONLY;
83	}
84
85	static void jabber_generate_id_hash( struct jabber_data *jd );
86
87	static void jabber_login( account_t *acc )
88	{
89	struct im_connection *ic = imcb_new( acc );
90	struct jabber_data *jd = g_new0( struct jabber_data, 1 );
91	struct ns_srv_reply *srv = NULL;
92	char connect_to, s;
93	int i;
94
95	/* For now this is needed in the _connected() handlers if using
96	GLib event handling, to make sure we're not handling events
97	on dead connections. */
98	jabber_connections = g_slist_prepend( jabber_connections, ic );
99
100	jd->ic = ic;
101	ic->proto_data = jd;
102
103	jd->username = g_strdup( acc->user );
104	jd->server = strchr( jd->username, '@' );
105
106	jd->fd = jd->r_inpa = jd->w_inpa = -1;
107
108	if( jd->server == NULL )
109	{
110	imcb_error( ic, "Incomplete account name (format it like <username@jabberserver.name>)" );
111	imc_logout( ic, FALSE );
112	return;
113	}
114
115	/* So don't think of free()ing jd->server.. :-) */
116	*jd->server = 0;
117	jd->server ++;
118
119	if( ( s = strchr( jd->server, '/' ) ) )
120	{
121	*s = 0;
122	set_setstr( &acc->set, "resource", s + 1 );
123
124	/* Also remove the /resource from the original variable so we
125	won't have to do this again every time. */
126	s = strchr( acc->user, '/' );
127	*s = 0;
128	}
129
130	/* This code isn't really pretty. Backwards compatibility never is... */
131	s = acc->server;
132	while( s )
133	{
134	static int had_port = 0;
135
136	if( strncmp( s, "ssl", 3 ) == 0 )
137	{
138	set_setstr( &acc->set, "ssl", "true" );
139
140	/* Flush this part so that (if this was the first
141	part of the server string) acc->server gets
142	flushed. We don't want to have to do this another
143	time. :-) */
144	*s = 0;
145	s ++;
146
147	/* Only set this if the user didn't specify a custom
148	port number already... */
149	if( !had_port )
150	set_setint( &acc->set, "port", 5223 );
151	}
152	else if( isdigit( *s ) )
153	{
154	int i;
155
156	/* The first character is a digit. It could be an
157	IP address though. Only accept this as a port#
158	if there are only digits. */
159	for( i = 0; isdigit( s[i] ); i ++ );
160
161	/* If the first non-digit character is a colon or
162	the end of the string, save the port number
163	where it should be. */
164	if( s[i] == ':' \|\| s[i] == 0 )
165	{
166	sscanf( s, "%d", &i );
167	set_setint( &acc->set, "port", i );
168
169	/* See above. */
170	*s = 0;
171	s ++;
172	}
173
174	had_port = 1;
175	}
176
177	s = strchr( s, ':' );
178	if( s )
179	{
180	*s = 0;
181	s ++;
182	}
183	}
184
185	jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
186	jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
187
188	/* Figure out the hostname to connect to. */
189	if( acc->server && *acc->server )
190	connect_to = acc->server;
191	else if( ( srv = srv_lookup( "xmpp-client", "tcp", jd->server ) ) \|\|
192	( srv = srv_lookup( "jabber-client", "tcp", jd->server ) ) )
193	connect_to = srv->name;
194	else
195	connect_to = jd->server;
196
197	imcb_log( ic, "Connecting" );
198
199	for( i = 0; jabber_port_list[i] > 0; i ++ )
200	if( set_getint( &acc->set, "port" ) == jabber_port_list[i] )
201	break;
202
203	if( jabber_port_list[i] == 0 )
204	{
205	imcb_log( ic, "Illegal port number" );
206	imc_logout( ic, FALSE );
207	return;
208	}
209
210	/* For non-SSL connections we can try to use the port # from the SRV
211	reply, but let's not do that when using SSL, SSL usually runs on
212	non-standard ports... */
213	if( set_getbool( &acc->set, "ssl" ) )
214	{
215	jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), jabber_connected_ssl, ic );
216	jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1;
217	}
218	else
219	{
220	jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic );
221	}
222	g_free( srv );
223
224	if( jd->fd == -1 )
225	{
226	imcb_error( ic, "Could not connect to server" );
227	imc_logout( ic, TRUE );
228
229	return;
230	}
231
232	if( set_getbool( &acc->set, "xmlconsole" ) )
233	{
234	jd->flags \|= JFLAG_XMLCONSOLE;
235	/* Shouldn't really do this at this stage already, maybe. But
236	I think this shouldn't break anything. */
237	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
238	}
239
240	jabber_generate_id_hash( jd );
241	}
242
243	static void jabber_generate_id_hash( struct jabber_data *jd )
244	{
245	md5_state_t id_hash;
246	md5_byte_t binbuf[16];
247	char *s;
248
249	md5_init( &id_hash );
250	md5_append( &id_hash, (unsigned char *) jd->username, strlen( jd->username ) );
251	md5_append( &id_hash, (unsigned char *) jd->server, strlen( jd->server ) );
252	s = set_getstr( &jd->ic->acc->set, "resource" );
253	md5_append( &id_hash, (unsigned char *) s, strlen( s ) );
254	random_bytes( binbuf, 16 );
255	md5_append( &id_hash, binbuf, 16 );
256	md5_finish( &id_hash, binbuf );
257
258	s = base64_encode( binbuf, 9 );
259	jd->cached_id_prefix = g_strdup_printf( "%s%s", JABBER_CACHED_ID, s );
260	g_free( s );
261	}
262
263	static void jabber_logout( struct im_connection *ic )
264	{
265	struct jabber_data *jd = ic->proto_data;
266
267	if( jd->fd >= 0 )
268	jabber_end_stream( ic );
269
270	while( ic->groupchats )
271	jabber_chat_free( ic->groupchats );
272
273	if( jd->r_inpa >= 0 )
274	b_event_remove( jd->r_inpa );
275	if( jd->w_inpa >= 0 )
276	b_event_remove( jd->w_inpa );
277
278	if( jd->ssl )
279	ssl_disconnect( jd->ssl );
280	if( jd->fd >= 0 )
281	closesocket( jd->fd );
282
283	if( jd->tx_len )
284	g_free( jd->txq );
285
286	if( jd->node_cache )
287	g_hash_table_destroy( jd->node_cache );
288
289	xt_free( jd->xt );
290
291	g_free( jd->cached_id_prefix );
292	g_free( jd->away_message );
293	g_free( jd->username );
294	g_free( jd );
295
296	jabber_connections = g_slist_remove( jabber_connections, ic );
297	}
298
299	static int jabber_buddy_msg( struct im_connection ic, char who, char *message, int flags )
300	{
301	struct jabber_data *jd = ic->proto_data;
302	struct jabber_buddy *bud;
303	struct xt_node *node;
304	char *s;
305	int st;
306
307	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
308	return jabber_write( ic, message, strlen( message ) );
309
310	if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
311	bud = jabber_buddy_by_ext_jid( ic, who, 0 );
312	else
313	bud = jabber_buddy_by_jid( ic, who, 0 );
314
315	node = xt_new_node( "body", message, NULL );
316	node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node );
317
318	if( bud && ( jd->flags & JFLAG_WANT_TYPING ) &&
319	( ( bud->flags & JBFLAG_DOES_XEP85 ) \|\|
320	!( bud->flags & JBFLAG_PROBED_XEP85 ) ) )
321	{
322	struct xt_node *act;
323
324	/* If the user likes typing notification and if we don't know
325	(and didn't probe before) if this resource supports XEP85,
326	include a probe in this packet now. Also, if we know this
327	buddy does support XEP85, we have to send this <active/>
328	tag to tell that the user stopped typing (well, that's what
329	we guess when s/he pressed Enter...). */
330	act = xt_new_node( "active", NULL, NULL );
331	xt_add_attr( act, "xmlns", XMLNS_CHATSTATES );
332	xt_add_child( node, act );
333
334	/* Just make sure we do this only once. */
335	bud->flags \|= JBFLAG_PROBED_XEP85;
336	}
337
338	st = jabber_write_packet( ic, node );
339	xt_free_node( node );
340
341	return st;
342	}
343
344	static GList jabber_away_states( struct im_connection ic )
345	{
346	static GList *l = NULL;
347	int i;
348
349	if( l == NULL )
350	for( i = 0; jabber_away_state_list[i].full_name; i ++ )
351	l = g_list_append( l, (void*) jabber_away_state_list[i].full_name );
352
353	return l;
354	}
355
356	static void jabber_get_info( struct im_connection ic, char who )
357	{
358	struct jabber_data *jd = ic->proto_data;
359	struct jabber_buddy *bud;
360
361	if( strchr( who, '/' ) )
362	bud = jabber_buddy_by_jid( ic, who, 0 );
363	else
364	{
365	char *s = jabber_normalize( who );
366	bud = g_hash_table_lookup( jd->buddies, s );
367	g_free( s );
368	}
369
370	while( bud )
371	{
372	imcb_log( ic, "Buddy %s (%d) information:\nAway state: %s\nAway message: %s",
373	bud->full_jid, bud->priority,
374	bud->away_state ? bud->away_state->full_name : "(none)",
375	bud->away_message ? : "(none)" );
376	bud = bud->next;
377	}
378
379	jabber_get_vcard( ic, bud ? bud->full_jid : who );
380	}
381
382	static void jabber_set_away( struct im_connection ic, char state_txt, char *message )
383	{
384	struct jabber_data *jd = ic->proto_data;
385	struct jabber_away_state *state;
386
387	/* Save all this info. We need it, for example, when changing the priority setting. */
388	state = (void *) jabber_away_state_by_name( state_txt );
389	jd->away_state = state ? state : (void ) jabber_away_state_list; / Fall back to "Away" if necessary. */
390	g_free( jd->away_message );
391	jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL;
392
393	presence_send_update( ic );
394	}
395
396	static void jabber_add_buddy( struct im_connection ic, char who, char *group )
397	{
398	struct jabber_data *jd = ic->proto_data;
399
400	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
401	{
402	jd->flags \|= JFLAG_XMLCONSOLE;
403	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
404	return;
405	}
406
407	if( jabber_add_to_roster( ic, who, NULL ) )
408	presence_send_request( ic, who, "subscribe" );
409	}
410
411	static void jabber_remove_buddy( struct im_connection ic, char who, char *group )
412	{
413	struct jabber_data *jd = ic->proto_data;
414
415	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
416	{
417	jd->flags &= ~JFLAG_XMLCONSOLE;
418	/* Not necessary for now. And for now the code isn't too
419	happy if the buddy is completely gone right after calling
420	this function already.
421	imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
422	*/
423	return;
424	}
425
426	/* We should always do this part. Clean up our administration a little bit. */
427	jabber_buddy_remove_bare( ic, who );
428
429	if( jabber_remove_from_roster( ic, who ) )
430	presence_send_request( ic, who, "unsubscribe" );
431	}
432
433	static struct groupchat jabber_chat_join_( struct im_connection ic, char room, char nick, char *password )
434	{
435	if( strchr( room, '@' ) == NULL )
436	imcb_error( ic, "Invalid room name: %s", room );
437	else if( jabber_chat_by_jid( ic, room ) )
438	imcb_error( ic, "Already present in chat `%s'", room );
439	else
440	return jabber_chat_join( ic, room, nick, password );
441
442	return NULL;
443	}
444
445	static void jabber_chat_msg_( struct groupchat c, char message, int flags )
446	{
447	if( c && message )
448	jabber_chat_msg( c, message, flags );
449	}
450
451	static void jabber_chat_topic_( struct groupchat c, char topic )
452	{
453	if( c && topic )
454	jabber_chat_topic( c, topic );
455	}
456
457	static void jabber_chat_leave_( struct groupchat *c )
458	{
459	if( c )
460	jabber_chat_leave( c, NULL );
461	}
462
463	static void jabber_chat_invite_( struct groupchat c, char who, char *msg )
464	{
465	struct jabber_chat *jc = c->data;
466	gchar *msg_alt = NULL;
467
468	if( msg == NULL )
469	msg_alt = g_strdup_printf( "%s invited you to %s", c->ic->acc->user, jc->name );
470
471	if( c && who )
472	jabber_chat_invite( c, who, msg ? msg : msg_alt );
473
474	g_free( msg_alt );
475	}
476
477	static void jabber_keepalive( struct im_connection *ic )
478	{
479	/* Just any whitespace character is enough as a keepalive for XMPP sessions. */
480	jabber_write( ic, "\n", 1 );
481
482	/* This runs the garbage collection every minute, which means every packet
483	is in the cache for about a minute (which should be enough AFAIK). */
484	jabber_cache_clean( ic );
485	}
486
487	static int jabber_send_typing( struct im_connection ic, char who, int typing )
488	{
489	struct jabber_data *jd = ic->proto_data;
490	struct jabber_buddy *bud;
491
492	/* Enable typing notification related code from now. */
493	jd->flags \|= JFLAG_WANT_TYPING;
494
495	if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL )
496	{
497	/* Sending typing notifications to unknown buddies is
498	unsupported for now. Shouldn't be a problem, I think. */
499	return 0;
500	}
501
502	if( bud->flags & JBFLAG_DOES_XEP85 )
503	{
504	/* We're only allowed to send this stuff if we know the other
505	side supports it. */
506
507	struct xt_node *node;
508	char *type;
509	int st;
510
511	if( typing & OPT_TYPING )
512	type = "composing";
513	else if( typing & OPT_THINKING )
514	type = "paused";
515	else
516	type = "active";
517
518	node = xt_new_node( type, NULL, NULL );
519	xt_add_attr( node, "xmlns", XMLNS_CHATSTATES );
520	node = jabber_make_packet( "message", "chat", bud->full_jid, node );
521
522	st = jabber_write_packet( ic, node );
523	xt_free_node( node );
524
525	return st;
526	}
527
528	return 1;
529	}
530
531	void jabber_initmodule()
532	{
533	struct prpl *ret = g_new0( struct prpl, 1 );
534
535	ret->name = "jabber";
536	ret->login = jabber_login;
537	ret->init = jabber_init;
538	ret->logout = jabber_logout;
539	ret->buddy_msg = jabber_buddy_msg;
540	ret->away_states = jabber_away_states;
541	ret->set_away = jabber_set_away;
542	// ret->set_info = jabber_set_info;
543	ret->get_info = jabber_get_info;
544	ret->add_buddy = jabber_add_buddy;
545	ret->remove_buddy = jabber_remove_buddy;
546	ret->chat_msg = jabber_chat_msg_;
547	ret->chat_topic = jabber_chat_topic_;
548	ret->chat_invite = jabber_chat_invite_;
549	ret->chat_leave = jabber_chat_leave_;
550	ret->chat_join = jabber_chat_join_;
551	ret->keepalive = jabber_keepalive;
552	ret->send_typing = jabber_send_typing;
553	ret->handle_cmp = g_strcasecmp;
554
555	register_protocol( ret );
556	}

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