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source: protocols/jabber/jabber.c @ 6e9ae72

Last change on this file since 6e9ae72 was 6e9ae72, checked in by Wilmer van der Gaast <wilmer@…>, at 2011-12-17T13:50:01Z
Mainline merge.
Property mode set to `100644`
File size: 17.4 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, "sasl", "true", set_eval_bool, acc );
87	s->flags \|= ACC_SET_OFFLINE_ONLY \| SET_HIDDEN_DEFAULT;
88
89	s = set_add( &acc->set, "user_agent", "BitlBee", NULL, acc );
90
91	s = set_add( &acc->set, "xmlconsole", "false", set_eval_bool, acc );
92	s->flags \|= ACC_SET_OFFLINE_ONLY;
93
94	acc->flags \|= ACC_FLAG_AWAY_MESSAGE \| ACC_FLAG_STATUS_MESSAGE;
95	}
96
97	static void jabber_generate_id_hash( struct jabber_data *jd );
98
99	static void jabber_login( account_t *acc )
100	{
101	struct im_connection *ic = imcb_new( acc );
102	struct jabber_data *jd = g_new0( struct jabber_data, 1 );
103	char *s;
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	jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
141	jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
142
143	if( set_getbool( &acc->set, "oauth" ) )
144	{
145	jd->fd = jd->r_inpa = jd->w_inpa = -1;
146
147	/* For the first login with OAuth, we have to authenticate via the browser.
148	For subsequent logins, exchange the refresh token for a valid access
149	token (even though the last one maybe didn't expire yet). */
150	if( strncmp( acc->pass, "refresh_token=", 14 ) != 0 )
151	{
152	sasl_oauth2_init( ic );
153	ic->flags \|= OPT_SLOW_LOGIN;
154	}
155	else
156	sasl_oauth2_refresh( ic, acc->pass + 14 );
157	}
158	else
159	jabber_connect( ic );
160	}
161
162	/* Separate this from jabber_login() so we can do OAuth first if necessary.
163	Putting this in io.c would probably be more correct. */
164	void jabber_connect( struct im_connection *ic )
165	{
166	account_t *acc = ic->acc;
167	struct jabber_data *jd = ic->proto_data;
168	int i;
169	char *connect_to;
170	struct ns_srv_reply *srvl = NULL, srv = NULL;
171
172	/* Figure out the hostname to connect to. */
173	if( acc->server && *acc->server )
174	connect_to = acc->server;
175	else if( ( srvl = srv_lookup( "xmpp-client", "tcp", jd->server ) ) \|\|
176	( srvl = srv_lookup( "jabber-client", "tcp", jd->server ) ) )
177	{
178	/* Find the lowest-priority one. These usually come
179	back in random/shuffled order. Not looking at
180	weights etc for now. */
181	srv = *srvl;
182	for( i = 1; srvl[i]; i ++ )
183	if( srvl[i]->prio < srv->prio )
184	srv = srvl[i];
185
186	connect_to = srv->name;
187	}
188	else
189	connect_to = jd->server;
190
191	imcb_log( ic, "Connecting" );
192
193	for( i = 0; jabber_port_list[i] > 0; i ++ )
194	if( set_getint( &acc->set, "port" ) == jabber_port_list[i] )
195	break;
196
197	if( jabber_port_list[i] == 0 )
198	{
199	imcb_log( ic, "Illegal port number" );
200	imc_logout( ic, FALSE );
201	return;
202	}
203
204	/* For non-SSL connections we can try to use the port # from the SRV
205	reply, but let's not do that when using SSL, SSL usually runs on
206	non-standard ports... */
207	if( set_getbool( &acc->set, "ssl" ) )
208	{
209	jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), jabber_connected_ssl, ic );
210	jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1;
211	}
212	else
213	{
214	jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic );
215	}
216	srv_free( srvl );
217
218	if( jd->fd == -1 )
219	{
220	imcb_error( ic, "Could not connect to server" );
221	imc_logout( ic, TRUE );
222
223	return;
224	}
225
226	if( set_getbool( &acc->set, "xmlconsole" ) )
227	{
228	jd->flags \|= JFLAG_XMLCONSOLE;
229	/* Shouldn't really do this at this stage already, maybe. But
230	I think this shouldn't break anything. */
231	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
232	}
233
234	jabber_generate_id_hash( jd );
235	}
236
237	/* This generates an unfinished md5_state_t variable. Every time we generate
238	an ID, we finish the state by adding a sequence number and take the hash. */
239	static void jabber_generate_id_hash( struct jabber_data *jd )
240	{
241	md5_byte_t binbuf[4];
242	char *s;
243
244	md5_init( &jd->cached_id_prefix );
245	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->username, strlen( jd->username ) );
246	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->server, strlen( jd->server ) );
247	s = set_getstr( &jd->ic->acc->set, "resource" );
248	md5_append( &jd->cached_id_prefix, (unsigned char *) s, strlen( s ) );
249	random_bytes( binbuf, 4 );
250	md5_append( &jd->cached_id_prefix, binbuf, 4 );
251	}
252
253	static void jabber_logout( struct im_connection *ic )
254	{
255	struct jabber_data *jd = ic->proto_data;
256
257	while( jd->filetransfers )
258	imcb_file_canceled( ic, ( ( struct jabber_transfer *) jd->filetransfers->data )->ft, "Logging out" );
259
260	while( jd->streamhosts )
261	{
262	jabber_streamhost_t *sh = jd->streamhosts->data;
263	jd->streamhosts = g_slist_remove( jd->streamhosts, sh );
264	g_free( sh->jid );
265	g_free( sh->host );
266	g_free( sh );
267	}
268
269	if( jd->fd >= 0 )
270	jabber_end_stream( ic );
271
272	while( ic->groupchats )
273	jabber_chat_free( ic->groupchats->data );
274
275	if( jd->r_inpa >= 0 )
276	b_event_remove( jd->r_inpa );
277	if( jd->w_inpa >= 0 )
278	b_event_remove( jd->w_inpa );
279
280	if( jd->ssl )
281	ssl_disconnect( jd->ssl );
282	if( jd->fd >= 0 )
283	closesocket( jd->fd );
284
285	if( jd->tx_len )
286	g_free( jd->txq );
287
288	if( jd->node_cache )
289	g_hash_table_destroy( jd->node_cache );
290
291	jabber_buddy_remove_all( ic );
292
293	xt_free( jd->xt );
294
295	g_free( jd->oauth2_access_token );
296	g_free( jd->away_message );
297	g_free( jd->username );
298	g_free( jd );
299
300	jabber_connections = g_slist_remove( jabber_connections, ic );
301	}
302
303	static int jabber_buddy_msg( struct im_connection ic, char who, char *message, int flags )
304	{
305	struct jabber_data *jd = ic->proto_data;
306	struct jabber_buddy *bud;
307	struct xt_node *node;
308	char *s;
309	int st;
310
311	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
312	return jabber_write( ic, message, strlen( message ) );
313
314	if( g_strcasecmp( who, "jabber_oauth" ) == 0 )
315	{
316	if( sasl_oauth2_get_refresh_token( ic, message ) )
317	{
318	return 1;
319	}
320	else
321	{
322	imcb_error( ic, "OAuth failure" );
323	imc_logout( ic, TRUE );
324	return 0;
325	}
326	}
327
328	if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
329	bud = jabber_buddy_by_ext_jid( ic, who, 0 );
330	else
331	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_BARE_OK );
332
333	node = xt_new_node( "body", message, NULL );
334	node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node );
335
336	if( bud && ( jd->flags & JFLAG_WANT_TYPING ) &&
337	( ( bud->flags & JBFLAG_DOES_XEP85 ) \|\|
338	!( bud->flags & JBFLAG_PROBED_XEP85 ) ) )
339	{
340	struct xt_node *act;
341
342	/* If the user likes typing notification and if we don't know
343	(and didn't probe before) if this resource supports XEP85,
344	include a probe in this packet now. Also, if we know this
345	buddy does support XEP85, we have to send this <active/>
346	tag to tell that the user stopped typing (well, that's what
347	we guess when s/he pressed Enter...). */
348	act = xt_new_node( "active", NULL, NULL );
349	xt_add_attr( act, "xmlns", XMLNS_CHATSTATES );
350	xt_add_child( node, act );
351
352	/* Just make sure we do this only once. */
353	bud->flags \|= JBFLAG_PROBED_XEP85;
354	}
355
356	st = jabber_write_packet( ic, node );
357	xt_free_node( node );
358
359	return st;
360	}
361
362	static GList jabber_away_states( struct im_connection ic )
363	{
364	static GList *l = NULL;
365	int i;
366
367	if( l == NULL )
368	for( i = 0; jabber_away_state_list[i].full_name; i ++ )
369	l = g_list_append( l, (void*) jabber_away_state_list[i].full_name );
370
371	return l;
372	}
373
374	static void jabber_get_info( struct im_connection ic, char who )
375	{
376	struct jabber_buddy *bud;
377
378	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_FIRST );
379
380	while( bud )
381	{
382	imcb_log( ic, "Buddy %s (%d) information:", bud->full_jid, bud->priority );
383	if( bud->away_state )
384	imcb_log( ic, "Away state: %s", bud->away_state->full_name );
385	imcb_log( ic, "Status message: %s", bud->away_message ? bud->away_message : "(none)" );
386
387	bud = bud->next;
388	}
389
390	jabber_get_vcard( ic, bud ? bud->full_jid : who );
391	}
392
393	static void jabber_set_away( struct im_connection ic, char state_txt, char *message )
394	{
395	struct jabber_data *jd = ic->proto_data;
396
397	/* state_txt == NULL -> Not away.
398	Unknown state -> fall back to the first defined away state. */
399	if( state_txt == NULL )
400	jd->away_state = NULL;
401	else if( ( jd->away_state = jabber_away_state_by_name( state_txt ) ) == NULL )
402	jd->away_state = jabber_away_state_list;
403
404	g_free( jd->away_message );
405	jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL;
406
407	presence_send_update( ic );
408	}
409
410	static void jabber_add_buddy( struct im_connection ic, char who, char *group )
411	{
412	struct jabber_data *jd = ic->proto_data;
413
414	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
415	{
416	jd->flags \|= JFLAG_XMLCONSOLE;
417	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
418	return;
419	}
420
421	if( jabber_add_to_roster( ic, who, NULL, group ) )
422	presence_send_request( ic, who, "subscribe" );
423	}
424
425	static void jabber_remove_buddy( struct im_connection ic, char who, char *group )
426	{
427	struct jabber_data *jd = ic->proto_data;
428
429	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
430	{
431	jd->flags &= ~JFLAG_XMLCONSOLE;
432	/* Not necessary for now. And for now the code isn't too
433	happy if the buddy is completely gone right after calling
434	this function already.
435	imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
436	*/
437	return;
438	}
439
440	/* We should always do this part. Clean up our administration a little bit. */
441	jabber_buddy_remove_bare( ic, who );
442
443	if( jabber_remove_from_roster( ic, who ) )
444	presence_send_request( ic, who, "unsubscribe" );
445	}
446
447	static struct groupchat jabber_chat_join_( struct im_connection ic, const char room, const char nick, const char password, set_t *sets )
448	{
449	if( strchr( room, '@' ) == NULL )
450	imcb_error( ic, "Invalid room name: %s", room );
451	else if( jabber_chat_by_jid( ic, room ) )
452	imcb_error( ic, "Already present in chat `%s'", room );
453	else
454	return jabber_chat_join( ic, room, nick, set_getstr( sets, "password" ) );
455
456	return NULL;
457	}
458
459	static void jabber_chat_msg_( struct groupchat c, char message, int flags )
460	{
461	if( c && message )
462	jabber_chat_msg( c, message, flags );
463	}
464
465	static void jabber_chat_topic_( struct groupchat c, char topic )
466	{
467	if( c && topic )
468	jabber_chat_topic( c, topic );
469	}
470
471	static void jabber_chat_leave_( struct groupchat *c )
472	{
473	if( c )
474	jabber_chat_leave( c, NULL );
475	}
476
477	static void jabber_chat_invite_( struct groupchat c, char who, char *msg )
478	{
479	struct jabber_chat *jc = c->data;
480	gchar *msg_alt = NULL;
481
482	if( msg == NULL )
483	msg_alt = g_strdup_printf( "%s invited you to %s", c->ic->acc->user, jc->name );
484
485	if( c && who )
486	jabber_chat_invite( c, who, msg ? msg : msg_alt );
487
488	g_free( msg_alt );
489	}
490
491	static void jabber_keepalive( struct im_connection *ic )
492	{
493	/* Just any whitespace character is enough as a keepalive for XMPP sessions. */
494	if( !jabber_write( ic, "\n", 1 ) )
495	return;
496
497	/* This runs the garbage collection every minute, which means every packet
498	is in the cache for about a minute (which should be enough AFAIK). */
499	jabber_cache_clean( ic );
500	}
501
502	static int jabber_send_typing( struct im_connection ic, char who, int typing )
503	{
504	struct jabber_data *jd = ic->proto_data;
505	struct jabber_buddy *bud;
506
507	/* Enable typing notification related code from now. */
508	jd->flags \|= JFLAG_WANT_TYPING;
509
510	if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL )
511	{
512	/* Sending typing notifications to unknown buddies is
513	unsupported for now. Shouldn't be a problem, I think. */
514	return 0;
515	}
516
517	if( bud->flags & JBFLAG_DOES_XEP85 )
518	{
519	/* We're only allowed to send this stuff if we know the other
520	side supports it. */
521
522	struct xt_node *node;
523	char *type;
524	int st;
525
526	if( typing & OPT_TYPING )
527	type = "composing";
528	else if( typing & OPT_THINKING )
529	type = "paused";
530	else
531	type = "active";
532
533	node = xt_new_node( type, NULL, NULL );
534	xt_add_attr( node, "xmlns", XMLNS_CHATSTATES );
535	node = jabber_make_packet( "message", "chat", bud->full_jid, node );
536
537	st = jabber_write_packet( ic, node );
538	xt_free_node( node );
539
540	return st;
541	}
542
543	return 1;
544	}
545
546	void jabber_chat_add_settings( account_t acc, set_t *head )
547	{
548	/* Meh. Stupid room passwords. Not trying to obfuscate/hide
549	them from the user for now. */
550	set_add( head, "password", NULL, NULL, NULL );
551	}
552
553	void jabber_chat_free_settings( account_t acc, set_t *head )
554	{
555	set_del( head, "password" );
556	}
557
558	GList jabber_buddy_action_list( bee_user_t bu )
559	{
560	static GList *ret = NULL;
561
562	if( ret == NULL )
563	{
564	static const struct buddy_action ba[2] = {
565	{ "VERSION", "Get client (version) information" },
566	};
567
568	ret = g_list_prepend( ret, (void*) ba + 0 );
569	}
570
571	return ret;
572	}
573
574	void jabber_buddy_action( struct bee_user bu, const char action, char const args[], void *data )
575	{
576	if( g_strcasecmp( action, "VERSION" ) == 0 )
577	{
578	struct jabber_buddy *bud;
579
580	if( ( bud = jabber_buddy_by_ext_jid( bu->ic, bu->handle, 0 ) ) == NULL )
581	bud = jabber_buddy_by_jid( bu->ic, bu->handle, GET_BUDDY_FIRST );
582	for( ; bud; bud = bud->next )
583	jabber_iq_version_send( bu->ic, bud, data );
584	}
585
586	return NULL;
587	}
588
589	void jabber_initmodule()
590	{
591	struct prpl *ret = g_new0( struct prpl, 1 );
592
593	ret->name = "jabber";
594	ret->mms = 0; /* no limit */
595	ret->login = jabber_login;
596	ret->init = jabber_init;
597	ret->logout = jabber_logout;
598	ret->buddy_msg = jabber_buddy_msg;
599	ret->away_states = jabber_away_states;
600	ret->set_away = jabber_set_away;
601	// ret->set_info = jabber_set_info;
602	ret->get_info = jabber_get_info;
603	ret->add_buddy = jabber_add_buddy;
604	ret->remove_buddy = jabber_remove_buddy;
605	ret->chat_msg = jabber_chat_msg_;
606	ret->chat_topic = jabber_chat_topic_;
607	ret->chat_invite = jabber_chat_invite_;
608	ret->chat_leave = jabber_chat_leave_;
609	ret->chat_join = jabber_chat_join_;
610	ret->chat_add_settings = jabber_chat_add_settings;
611	ret->chat_free_settings = jabber_chat_free_settings;
612	ret->keepalive = jabber_keepalive;
613	ret->send_typing = jabber_send_typing;
614	ret->handle_cmp = g_strcasecmp;
615	ret->transfer_request = jabber_si_transfer_request;
616	ret->buddy_action_list = jabber_buddy_action_list;
617	ret->buddy_action = jabber_buddy_action;
618
619	register_protocol( ret );
620	}

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