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source: protocols/jabber/jabber.c @ 0a6e5d1

Last change on this file since 0a6e5d1 was aea8b68, checked in by Wilmer van der Gaast <wilmer@…>, at 2010-05-06T00:28:56Z
Starting to restore chatroom stuff. Only enough to create and be joined into a room. More will follow soon.
Property mode set to `100644`
File size: 15.7 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, "xmlconsole", "false", set_eval_bool, acc );
85	s->flags \|= ACC_SET_OFFLINE_ONLY;
86
87	acc->flags \|= ACC_FLAG_AWAY_MESSAGE \| ACC_FLAG_STATUS_MESSAGE;
88	}
89
90	static void jabber_generate_id_hash( struct jabber_data *jd );
91
92	static void jabber_login( account_t *acc )
93	{
94	struct im_connection *ic = imcb_new( acc );
95	struct jabber_data *jd = g_new0( struct jabber_data, 1 );
96	struct ns_srv_reply *srv = NULL;
97	char connect_to, s;
98	int i;
99
100	/* For now this is needed in the _connected() handlers if using
101	GLib event handling, to make sure we're not handling events
102	on dead connections. */
103	jabber_connections = g_slist_prepend( jabber_connections, ic );
104
105	jd->ic = ic;
106	ic->proto_data = jd;
107
108	jd->username = g_strdup( acc->user );
109	jd->server = strchr( jd->username, '@' );
110
111	jd->fd = jd->r_inpa = jd->w_inpa = -1;
112
113	if( jd->server == NULL )
114	{
115	imcb_error( ic, "Incomplete account name (format it like <username@jabberserver.name>)" );
116	imc_logout( ic, FALSE );
117	return;
118	}
119
120	/* So don't think of free()ing jd->server.. :-) */
121	*jd->server = 0;
122	jd->server ++;
123
124	if( ( s = strchr( jd->server, '/' ) ) )
125	{
126	*s = 0;
127	set_setstr( &acc->set, "resource", s + 1 );
128
129	/* Also remove the /resource from the original variable so we
130	won't have to do this again every time. */
131	s = strchr( acc->user, '/' );
132	*s = 0;
133	}
134
135	/* This code isn't really pretty. Backwards compatibility never is... */
136	s = acc->server;
137	while( s )
138	{
139	static int had_port = 0;
140
141	if( strncmp( s, "ssl", 3 ) == 0 )
142	{
143	set_setstr( &acc->set, "ssl", "true" );
144
145	/* Flush this part so that (if this was the first
146	part of the server string) acc->server gets
147	flushed. We don't want to have to do this another
148	time. :-) */
149	*s = 0;
150	s ++;
151
152	/* Only set this if the user didn't specify a custom
153	port number already... */
154	if( !had_port )
155	set_setint( &acc->set, "port", 5223 );
156	}
157	else if( isdigit( *s ) )
158	{
159	int i;
160
161	/* The first character is a digit. It could be an
162	IP address though. Only accept this as a port#
163	if there are only digits. */
164	for( i = 0; isdigit( s[i] ); i ++ );
165
166	/* If the first non-digit character is a colon or
167	the end of the string, save the port number
168	where it should be. */
169	if( s[i] == ':' \|\| s[i] == 0 )
170	{
171	sscanf( s, "%d", &i );
172	set_setint( &acc->set, "port", i );
173
174	/* See above. */
175	*s = 0;
176	s ++;
177	}
178
179	had_port = 1;
180	}
181
182	s = strchr( s, ':' );
183	if( s )
184	{
185	*s = 0;
186	s ++;
187	}
188	}
189
190	jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
191	jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
192
193	/* Figure out the hostname to connect to. */
194	if( acc->server && *acc->server )
195	connect_to = acc->server;
196	else if( ( srv = srv_lookup( "xmpp-client", "tcp", jd->server ) ) \|\|
197	( srv = srv_lookup( "jabber-client", "tcp", jd->server ) ) )
198	connect_to = srv->name;
199	else
200	connect_to = jd->server;
201
202	imcb_log( ic, "Connecting" );
203
204	for( i = 0; jabber_port_list[i] > 0; i ++ )
205	if( set_getint( &acc->set, "port" ) == jabber_port_list[i] )
206	break;
207
208	if( jabber_port_list[i] == 0 )
209	{
210	imcb_log( ic, "Illegal port number" );
211	imc_logout( ic, FALSE );
212	return;
213	}
214
215	/* For non-SSL connections we can try to use the port # from the SRV
216	reply, but let's not do that when using SSL, SSL usually runs on
217	non-standard ports... */
218	if( set_getbool( &acc->set, "ssl" ) )
219	{
220	jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), jabber_connected_ssl, ic );
221	jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1;
222	}
223	else
224	{
225	jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic );
226	}
227	g_free( srv );
228
229	if( jd->fd == -1 )
230	{
231	imcb_error( ic, "Could not connect to server" );
232	imc_logout( ic, TRUE );
233
234	return;
235	}
236
237	if( set_getbool( &acc->set, "xmlconsole" ) )
238	{
239	jd->flags \|= JFLAG_XMLCONSOLE;
240	/* Shouldn't really do this at this stage already, maybe. But
241	I think this shouldn't break anything. */
242	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
243	}
244
245	jabber_generate_id_hash( jd );
246	}
247
248	/* This generates an unfinished md5_state_t variable. Every time we generate
249	an ID, we finish the state by adding a sequence number and take the hash. */
250	static void jabber_generate_id_hash( struct jabber_data *jd )
251	{
252	md5_byte_t binbuf[4];
253	char *s;
254
255	md5_init( &jd->cached_id_prefix );
256	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->username, strlen( jd->username ) );
257	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->server, strlen( jd->server ) );
258	s = set_getstr( &jd->ic->acc->set, "resource" );
259	md5_append( &jd->cached_id_prefix, (unsigned char *) s, strlen( s ) );
260	random_bytes( binbuf, 4 );
261	md5_append( &jd->cached_id_prefix, binbuf, 4 );
262	}
263
264	static void jabber_logout( struct im_connection *ic )
265	{
266	struct jabber_data *jd = ic->proto_data;
267
268	while( jd->filetransfers )
269	imcb_file_canceled( ic, ( ( struct jabber_transfer *) jd->filetransfers->data )->ft, "Logging out" );
270
271	while( jd->streamhosts )
272	{
273	jabber_streamhost_t *sh = jd->streamhosts->data;
274	jd->streamhosts = g_slist_remove( jd->streamhosts, sh );
275	g_free( sh->jid );
276	g_free( sh->host );
277	g_free( sh );
278	}
279
280	if( jd->fd >= 0 )
281	jabber_end_stream( ic );
282
283	while( ic->groupchats )
284	jabber_chat_free( ic->groupchats->data );
285
286	if( jd->r_inpa >= 0 )
287	b_event_remove( jd->r_inpa );
288	if( jd->w_inpa >= 0 )
289	b_event_remove( jd->w_inpa );
290
291	if( jd->ssl )
292	ssl_disconnect( jd->ssl );
293	if( jd->fd >= 0 )
294	closesocket( jd->fd );
295
296	if( jd->tx_len )
297	g_free( jd->txq );
298
299	if( jd->node_cache )
300	g_hash_table_destroy( jd->node_cache );
301
302	xt_free( jd->xt );
303
304	g_free( jd->away_message );
305	g_free( jd->username );
306	g_free( jd );
307
308	jabber_connections = g_slist_remove( jabber_connections, ic );
309	}
310
311	static int jabber_buddy_msg( struct im_connection ic, char who, char *message, int flags )
312	{
313	struct jabber_data *jd = ic->proto_data;
314	struct jabber_buddy *bud;
315	struct xt_node *node;
316	char *s;
317	int st;
318
319	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
320	return jabber_write( ic, message, strlen( message ) );
321
322	if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
323	bud = jabber_buddy_by_ext_jid( ic, who, 0 );
324	else
325	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_BARE_OK );
326
327	node = xt_new_node( "body", message, NULL );
328	node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node );
329
330	if( bud && ( jd->flags & JFLAG_WANT_TYPING ) &&
331	( ( bud->flags & JBFLAG_DOES_XEP85 ) \|\|
332	!( bud->flags & JBFLAG_PROBED_XEP85 ) ) )
333	{
334	struct xt_node *act;
335
336	/* If the user likes typing notification and if we don't know
337	(and didn't probe before) if this resource supports XEP85,
338	include a probe in this packet now. Also, if we know this
339	buddy does support XEP85, we have to send this <active/>
340	tag to tell that the user stopped typing (well, that's what
341	we guess when s/he pressed Enter...). */
342	act = xt_new_node( "active", NULL, NULL );
343	xt_add_attr( act, "xmlns", XMLNS_CHATSTATES );
344	xt_add_child( node, act );
345
346	/* Just make sure we do this only once. */
347	bud->flags \|= JBFLAG_PROBED_XEP85;
348	}
349
350	st = jabber_write_packet( ic, node );
351	xt_free_node( node );
352
353	return st;
354	}
355
356	static GList jabber_away_states( struct im_connection ic )
357	{
358	static GList *l = NULL;
359	int i;
360
361	if( l == NULL )
362	for( i = 0; jabber_away_state_list[i].full_name; i ++ )
363	l = g_list_append( l, (void*) jabber_away_state_list[i].full_name );
364
365	return l;
366	}
367
368	static void jabber_get_info( struct im_connection ic, char who )
369	{
370	struct jabber_buddy *bud;
371
372	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_FIRST );
373
374	while( bud )
375	{
376	imcb_log( ic, "Buddy %s (%d) information:", bud->full_jid, bud->priority );
377	if( bud->away_state )
378	imcb_log( ic, "Away state: %s", bud->away_state->full_name );
379	imcb_log( ic, "Status message: %s", bud->away_message ? : "(none)" );
380
381	bud = bud->next;
382	}
383
384	jabber_get_vcard( ic, bud ? bud->full_jid : who );
385	}
386
387	static void jabber_set_away( struct im_connection ic, char state_txt, char *message )
388	{
389	struct jabber_data *jd = ic->proto_data;
390
391	/* state_txt == NULL -> Not away.
392	Unknown state -> fall back to the first defined away state. */
393	jd->away_state = state_txt ? jabber_away_state_by_name( state_txt )
394	? : jabber_away_state_list : NULL;
395
396	g_free( jd->away_message );
397	jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL;
398
399	presence_send_update( ic );
400	}
401
402	static void jabber_add_buddy( struct im_connection ic, char who, char *group )
403	{
404	struct jabber_data *jd = ic->proto_data;
405
406	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
407	{
408	jd->flags \|= JFLAG_XMLCONSOLE;
409	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
410	return;
411	}
412
413	if( jabber_add_to_roster( ic, who, NULL ) )
414	presence_send_request( ic, who, "subscribe" );
415	}
416
417	static void jabber_remove_buddy( struct im_connection ic, char who, char *group )
418	{
419	struct jabber_data *jd = ic->proto_data;
420
421	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
422	{
423	jd->flags &= ~JFLAG_XMLCONSOLE;
424	/* Not necessary for now. And for now the code isn't too
425	happy if the buddy is completely gone right after calling
426	this function already.
427	imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
428	*/
429	return;
430	}
431
432	/* We should always do this part. Clean up our administration a little bit. */
433	jabber_buddy_remove_bare( ic, who );
434
435	if( jabber_remove_from_roster( ic, who ) )
436	presence_send_request( ic, who, "unsubscribe" );
437	}
438
439	static struct groupchat jabber_chat_join_( struct im_connection ic, const char room, const char nick, const char *password )
440	{
441	if( strchr( room, '@' ) == NULL )
442	imcb_error( ic, "Invalid room name: %s", room );
443	else if( jabber_chat_by_jid( ic, room ) )
444	imcb_error( ic, "Already present in chat `%s'", room );
445	else
446	return jabber_chat_join( ic, room, nick, password );
447
448	return NULL;
449	}
450
451	static void jabber_chat_msg_( struct groupchat c, char message, int flags )
452	{
453	if( c && message )
454	jabber_chat_msg( c, message, flags );
455	}
456
457	static void jabber_chat_topic_( struct groupchat c, char topic )
458	{
459	if( c && topic )
460	jabber_chat_topic( c, topic );
461	}
462
463	static void jabber_chat_leave_( struct groupchat *c )
464	{
465	if( c )
466	jabber_chat_leave( c, NULL );
467	}
468
469	static void jabber_chat_invite_( struct groupchat c, char who, char *msg )
470	{
471	struct jabber_chat *jc = c->data;
472	gchar *msg_alt = NULL;
473
474	if( msg == NULL )
475	msg_alt = g_strdup_printf( "%s invited you to %s", c->ic->acc->user, jc->name );
476
477	if( c && who )
478	jabber_chat_invite( c, who, msg ? msg : msg_alt );
479
480	g_free( msg_alt );
481	}
482
483	static void jabber_keepalive( struct im_connection *ic )
484	{
485	/* Just any whitespace character is enough as a keepalive for XMPP sessions. */
486	jabber_write( ic, "\n", 1 );
487
488	/* This runs the garbage collection every minute, which means every packet
489	is in the cache for about a minute (which should be enough AFAIK). */
490	jabber_cache_clean( ic );
491	}
492
493	static int jabber_send_typing( struct im_connection ic, char who, int typing )
494	{
495	struct jabber_data *jd = ic->proto_data;
496	struct jabber_buddy *bud;
497
498	/* Enable typing notification related code from now. */
499	jd->flags \|= JFLAG_WANT_TYPING;
500
501	if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL )
502	{
503	/* Sending typing notifications to unknown buddies is
504	unsupported for now. Shouldn't be a problem, I think. */
505	return 0;
506	}
507
508	if( bud->flags & JBFLAG_DOES_XEP85 )
509	{
510	/* We're only allowed to send this stuff if we know the other
511	side supports it. */
512
513	struct xt_node *node;
514	char *type;
515	int st;
516
517	if( typing & OPT_TYPING )
518	type = "composing";
519	else if( typing & OPT_THINKING )
520	type = "paused";
521	else
522	type = "active";
523
524	node = xt_new_node( type, NULL, NULL );
525	xt_add_attr( node, "xmlns", XMLNS_CHATSTATES );
526	node = jabber_make_packet( "message", "chat", bud->full_jid, node );
527
528	st = jabber_write_packet( ic, node );
529	xt_free_node( node );
530
531	return st;
532	}
533
534	return 1;
535	}
536
537	void jabber_initmodule()
538	{
539	struct prpl *ret = g_new0( struct prpl, 1 );
540
541	ret->name = "jabber";
542	ret->login = jabber_login;
543	ret->init = jabber_init;
544	ret->logout = jabber_logout;
545	ret->buddy_msg = jabber_buddy_msg;
546	ret->away_states = jabber_away_states;
547	ret->set_away = jabber_set_away;
548	// ret->set_info = jabber_set_info;
549	ret->get_info = jabber_get_info;
550	ret->add_buddy = jabber_add_buddy;
551	ret->remove_buddy = jabber_remove_buddy;
552	ret->chat_msg = jabber_chat_msg_;
553	ret->chat_topic = jabber_chat_topic_;
554	ret->chat_invite = jabber_chat_invite_;
555	ret->chat_leave = jabber_chat_leave_;
556	ret->chat_join = jabber_chat_join_;
557	ret->keepalive = jabber_keepalive;
558	ret->send_typing = jabber_send_typing;
559	ret->handle_cmp = g_strcasecmp;
560	ret->transfer_request = jabber_si_transfer_request;
561
562	register_protocol( ret );
563	}

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