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source: protocols/jabber/jabber.c @ 68286eb

Last change on this file since 68286eb was 68286eb, checked in by Wilmer van der Gaast <wilmer@…>, at 2011-12-20T16:45:53Z
Detect JID changes at login time and warn the user about them.
Property mode set to `100644`
File size: 17.8 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	jabber_set_me( ic, acc->user );
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	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	jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
136	jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
137
138	if( set_getbool( &acc->set, "oauth" ) )
139	{
140	jd->fd = jd->r_inpa = jd->w_inpa = -1;
141
142	if( strstr( jd->server, ".live.com" ) )
143	jd->oauth2_service = &oauth2_service_mslive;
144	else if( strstr( jd->server, ".facebook.com" ) )
145	jd->oauth2_service = &oauth2_service_facebook;
146	else
147	jd->oauth2_service = &oauth2_service_google;
148
149	/* First see if we have a refresh token, in which case any
150	access token we might have has probably expired already
151	anyway. */
152	if( strstr( acc->pass, "refresh_token=" ) )
153	{
154	sasl_oauth2_refresh( ic, acc->pass + 14 );
155	}
156	/* If we don't have a refresh token, let's hope the access
157	token is still usable. */
158	else if( strstr( acc->pass, "access_token=" ) )
159	{
160	sasl_oauth2_load_access_token( ic );
161	jabber_connect( ic );
162	}
163	/* If we don't have any, start the OAuth process now. Don't
164	even open an XMPP connection yet. */
165	else
166	{
167	sasl_oauth2_init( ic );
168	ic->flags \|= OPT_SLOW_LOGIN;
169	}
170	}
171	else
172	jabber_connect( ic );
173	}
174
175	/* Separate this from jabber_login() so we can do OAuth first if necessary.
176	Putting this in io.c would probably be more correct. */
177	void jabber_connect( struct im_connection *ic )
178	{
179	account_t *acc = ic->acc;
180	struct jabber_data *jd = ic->proto_data;
181	int i;
182	char *connect_to;
183	struct ns_srv_reply *srvl = NULL, srv = NULL;
184
185	/* Figure out the hostname to connect to. */
186	if( acc->server && *acc->server )
187	connect_to = acc->server;
188	else if( ( srvl = srv_lookup( "xmpp-client", "tcp", jd->server ) ) \|\|
189	( srvl = srv_lookup( "jabber-client", "tcp", jd->server ) ) )
190	{
191	/* Find the lowest-priority one. These usually come
192	back in random/shuffled order. Not looking at
193	weights etc for now. */
194	srv = *srvl;
195	for( i = 1; srvl[i]; i ++ )
196	if( srvl[i]->prio < srv->prio )
197	srv = srvl[i];
198
199	connect_to = srv->name;
200	}
201	else
202	connect_to = jd->server;
203
204	imcb_log( ic, "Connecting" );
205
206	for( i = 0; jabber_port_list[i] > 0; i ++ )
207	if( set_getint( &acc->set, "port" ) == jabber_port_list[i] )
208	break;
209
210	if( jabber_port_list[i] == 0 )
211	{
212	imcb_log( ic, "Illegal port number" );
213	imc_logout( ic, FALSE );
214	return;
215	}
216
217	/* For non-SSL connections we can try to use the port # from the SRV
218	reply, but let's not do that when using SSL, SSL usually runs on
219	non-standard ports... */
220	if( set_getbool( &acc->set, "ssl" ) )
221	{
222	jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), jabber_connected_ssl, ic );
223	jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1;
224	}
225	else
226	{
227	jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic );
228	}
229	srv_free( srvl );
230
231	if( jd->fd == -1 )
232	{
233	imcb_error( ic, "Could not connect to server" );
234	imc_logout( ic, TRUE );
235
236	return;
237	}
238
239	if( set_getbool( &acc->set, "xmlconsole" ) )
240	{
241	jd->flags \|= JFLAG_XMLCONSOLE;
242	/* Shouldn't really do this at this stage already, maybe. But
243	I think this shouldn't break anything. */
244	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
245	}
246
247	jabber_generate_id_hash( jd );
248	}
249
250	/* This generates an unfinished md5_state_t variable. Every time we generate
251	an ID, we finish the state by adding a sequence number and take the hash. */
252	static void jabber_generate_id_hash( struct jabber_data *jd )
253	{
254	md5_byte_t binbuf[4];
255	char *s;
256
257	md5_init( &jd->cached_id_prefix );
258	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->username, strlen( jd->username ) );
259	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->server, strlen( jd->server ) );
260	s = set_getstr( &jd->ic->acc->set, "resource" );
261	md5_append( &jd->cached_id_prefix, (unsigned char *) s, strlen( s ) );
262	random_bytes( binbuf, 4 );
263	md5_append( &jd->cached_id_prefix, binbuf, 4 );
264	}
265
266	static void jabber_logout( struct im_connection *ic )
267	{
268	struct jabber_data *jd = ic->proto_data;
269
270	while( jd->filetransfers )
271	imcb_file_canceled( ic, ( ( struct jabber_transfer *) jd->filetransfers->data )->ft, "Logging out" );
272
273	while( jd->streamhosts )
274	{
275	jabber_streamhost_t *sh = jd->streamhosts->data;
276	jd->streamhosts = g_slist_remove( jd->streamhosts, sh );
277	g_free( sh->jid );
278	g_free( sh->host );
279	g_free( sh );
280	}
281
282	if( jd->fd >= 0 )
283	jabber_end_stream( ic );
284
285	while( ic->groupchats )
286	jabber_chat_free( ic->groupchats->data );
287
288	if( jd->r_inpa >= 0 )
289	b_event_remove( jd->r_inpa );
290	if( jd->w_inpa >= 0 )
291	b_event_remove( jd->w_inpa );
292
293	if( jd->ssl )
294	ssl_disconnect( jd->ssl );
295	if( jd->fd >= 0 )
296	closesocket( jd->fd );
297
298	if( jd->tx_len )
299	g_free( jd->txq );
300
301	if( jd->node_cache )
302	g_hash_table_destroy( jd->node_cache );
303
304	jabber_buddy_remove_all( ic );
305
306	xt_free( jd->xt );
307
308	g_free( jd->oauth2_access_token );
309	g_free( jd->away_message );
310	g_free( jd->username );
311	g_free( jd->me );
312	g_free( jd );
313
314	jabber_connections = g_slist_remove( jabber_connections, ic );
315	}
316
317	static int jabber_buddy_msg( struct im_connection ic, char who, char *message, int flags )
318	{
319	struct jabber_data *jd = ic->proto_data;
320	struct jabber_buddy *bud;
321	struct xt_node *node;
322	char *s;
323	int st;
324
325	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
326	return jabber_write( ic, message, strlen( message ) );
327
328	if( g_strcasecmp( who, "jabber_oauth" ) == 0 )
329	{
330	if( sasl_oauth2_get_refresh_token( ic, message ) )
331	{
332	return 1;
333	}
334	else
335	{
336	imcb_error( ic, "OAuth failure" );
337	imc_logout( ic, TRUE );
338	return 0;
339	}
340	}
341
342	if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
343	bud = jabber_buddy_by_ext_jid( ic, who, 0 );
344	else
345	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_BARE_OK );
346
347	node = xt_new_node( "body", message, NULL );
348	node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node );
349
350	if( bud && ( jd->flags & JFLAG_WANT_TYPING ) &&
351	( ( bud->flags & JBFLAG_DOES_XEP85 ) \|\|
352	!( bud->flags & JBFLAG_PROBED_XEP85 ) ) )
353	{
354	struct xt_node *act;
355
356	/* If the user likes typing notification and if we don't know
357	(and didn't probe before) if this resource supports XEP85,
358	include a probe in this packet now. Also, if we know this
359	buddy does support XEP85, we have to send this <active/>
360	tag to tell that the user stopped typing (well, that's what
361	we guess when s/he pressed Enter...). */
362	act = xt_new_node( "active", NULL, NULL );
363	xt_add_attr( act, "xmlns", XMLNS_CHATSTATES );
364	xt_add_child( node, act );
365
366	/* Just make sure we do this only once. */
367	bud->flags \|= JBFLAG_PROBED_XEP85;
368	}
369
370	st = jabber_write_packet( ic, node );
371	xt_free_node( node );
372
373	return st;
374	}
375
376	static GList jabber_away_states( struct im_connection ic )
377	{
378	static GList *l = NULL;
379	int i;
380
381	if( l == NULL )
382	for( i = 0; jabber_away_state_list[i].full_name; i ++ )
383	l = g_list_append( l, (void*) jabber_away_state_list[i].full_name );
384
385	return l;
386	}
387
388	static void jabber_get_info( struct im_connection ic, char who )
389	{
390	struct jabber_buddy *bud;
391
392	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_FIRST );
393
394	while( bud )
395	{
396	imcb_log( ic, "Buddy %s (%d) information:", bud->full_jid, bud->priority );
397	if( bud->away_state )
398	imcb_log( ic, "Away state: %s", bud->away_state->full_name );
399	imcb_log( ic, "Status message: %s", bud->away_message ? bud->away_message : "(none)" );
400
401	bud = bud->next;
402	}
403
404	jabber_get_vcard( ic, bud ? bud->full_jid : who );
405	}
406
407	static void jabber_set_away( struct im_connection ic, char state_txt, char *message )
408	{
409	struct jabber_data *jd = ic->proto_data;
410
411	/* state_txt == NULL -> Not away.
412	Unknown state -> fall back to the first defined away state. */
413	if( state_txt == NULL )
414	jd->away_state = NULL;
415	else if( ( jd->away_state = jabber_away_state_by_name( state_txt ) ) == NULL )
416	jd->away_state = jabber_away_state_list;
417
418	g_free( jd->away_message );
419	jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL;
420
421	presence_send_update( ic );
422	}
423
424	static void jabber_add_buddy( struct im_connection ic, char who, char *group )
425	{
426	struct jabber_data *jd = ic->proto_data;
427
428	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
429	{
430	jd->flags \|= JFLAG_XMLCONSOLE;
431	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
432	return;
433	}
434
435	if( jabber_add_to_roster( ic, who, NULL, group ) )
436	presence_send_request( ic, who, "subscribe" );
437	}
438
439	static void jabber_remove_buddy( struct im_connection ic, char who, char *group )
440	{
441	struct jabber_data *jd = ic->proto_data;
442
443	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
444	{
445	jd->flags &= ~JFLAG_XMLCONSOLE;
446	/* Not necessary for now. And for now the code isn't too
447	happy if the buddy is completely gone right after calling
448	this function already.
449	imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
450	*/
451	return;
452	}
453
454	/* We should always do this part. Clean up our administration a little bit. */
455	jabber_buddy_remove_bare( ic, who );
456
457	if( jabber_remove_from_roster( ic, who ) )
458	presence_send_request( ic, who, "unsubscribe" );
459	}
460
461	static struct groupchat jabber_chat_join_( struct im_connection ic, const char room, const char nick, const char password, set_t *sets )
462	{
463	if( strchr( room, '@' ) == NULL )
464	imcb_error( ic, "Invalid room name: %s", room );
465	else if( jabber_chat_by_jid( ic, room ) )
466	imcb_error( ic, "Already present in chat `%s'", room );
467	else
468	return jabber_chat_join( ic, room, nick, set_getstr( sets, "password" ) );
469
470	return NULL;
471	}
472
473	static void jabber_chat_msg_( struct groupchat c, char message, int flags )
474	{
475	if( c && message )
476	jabber_chat_msg( c, message, flags );
477	}
478
479	static void jabber_chat_topic_( struct groupchat c, char topic )
480	{
481	if( c && topic )
482	jabber_chat_topic( c, topic );
483	}
484
485	static void jabber_chat_leave_( struct groupchat *c )
486	{
487	if( c )
488	jabber_chat_leave( c, NULL );
489	}
490
491	static void jabber_chat_invite_( struct groupchat c, char who, char *msg )
492	{
493	struct jabber_data *jd = c->ic->proto_data;
494	struct jabber_chat *jc = c->data;
495	gchar *msg_alt = NULL;
496
497	if( msg == NULL )
498	msg_alt = g_strdup_printf( "%s invited you to %s", jd->me, jc->name );
499
500	if( c && who )
501	jabber_chat_invite( c, who, msg ? msg : msg_alt );
502
503	g_free( msg_alt );
504	}
505
506	static void jabber_keepalive( struct im_connection *ic )
507	{
508	/* Just any whitespace character is enough as a keepalive for XMPP sessions. */
509	if( !jabber_write( ic, "\n", 1 ) )
510	return;
511
512	/* This runs the garbage collection every minute, which means every packet
513	is in the cache for about a minute (which should be enough AFAIK). */
514	jabber_cache_clean( ic );
515	}
516
517	static int jabber_send_typing( struct im_connection ic, char who, int typing )
518	{
519	struct jabber_data *jd = ic->proto_data;
520	struct jabber_buddy *bud;
521
522	/* Enable typing notification related code from now. */
523	jd->flags \|= JFLAG_WANT_TYPING;
524
525	if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL )
526	{
527	/* Sending typing notifications to unknown buddies is
528	unsupported for now. Shouldn't be a problem, I think. */
529	return 0;
530	}
531
532	if( bud->flags & JBFLAG_DOES_XEP85 )
533	{
534	/* We're only allowed to send this stuff if we know the other
535	side supports it. */
536
537	struct xt_node *node;
538	char *type;
539	int st;
540
541	if( typing & OPT_TYPING )
542	type = "composing";
543	else if( typing & OPT_THINKING )
544	type = "paused";
545	else
546	type = "active";
547
548	node = xt_new_node( type, NULL, NULL );
549	xt_add_attr( node, "xmlns", XMLNS_CHATSTATES );
550	node = jabber_make_packet( "message", "chat", bud->full_jid, node );
551
552	st = jabber_write_packet( ic, node );
553	xt_free_node( node );
554
555	return st;
556	}
557
558	return 1;
559	}
560
561	void jabber_chat_add_settings( account_t acc, set_t *head )
562	{
563	/* Meh. Stupid room passwords. Not trying to obfuscate/hide
564	them from the user for now. */
565	set_add( head, "password", NULL, NULL, NULL );
566	}
567
568	void jabber_chat_free_settings( account_t acc, set_t *head )
569	{
570	set_del( head, "password" );
571	}
572
573	GList jabber_buddy_action_list( bee_user_t bu )
574	{
575	static GList *ret = NULL;
576
577	if( ret == NULL )
578	{
579	static const struct buddy_action ba[2] = {
580	{ "VERSION", "Get client (version) information" },
581	};
582
583	ret = g_list_prepend( ret, (void*) ba + 0 );
584	}
585
586	return ret;
587	}
588
589	void jabber_buddy_action( struct bee_user bu, const char action, char const args[], void *data )
590	{
591	if( g_strcasecmp( action, "VERSION" ) == 0 )
592	{
593	struct jabber_buddy *bud;
594
595	if( ( bud = jabber_buddy_by_ext_jid( bu->ic, bu->handle, 0 ) ) == NULL )
596	bud = jabber_buddy_by_jid( bu->ic, bu->handle, GET_BUDDY_FIRST );
597	for( ; bud; bud = bud->next )
598	jabber_iq_version_send( bu->ic, bud, data );
599	}
600
601	return NULL;
602	}
603
604	void jabber_initmodule()
605	{
606	struct prpl *ret = g_new0( struct prpl, 1 );
607
608	ret->name = "jabber";
609	ret->mms = 0; /* no limit */
610	ret->login = jabber_login;
611	ret->init = jabber_init;
612	ret->logout = jabber_logout;
613	ret->buddy_msg = jabber_buddy_msg;
614	ret->away_states = jabber_away_states;
615	ret->set_away = jabber_set_away;
616	// ret->set_info = jabber_set_info;
617	ret->get_info = jabber_get_info;
618	ret->add_buddy = jabber_add_buddy;
619	ret->remove_buddy = jabber_remove_buddy;
620	ret->chat_msg = jabber_chat_msg_;
621	ret->chat_topic = jabber_chat_topic_;
622	ret->chat_invite = jabber_chat_invite_;
623	ret->chat_leave = jabber_chat_leave_;
624	ret->chat_join = jabber_chat_join_;
625	ret->chat_add_settings = jabber_chat_add_settings;
626	ret->chat_free_settings = jabber_chat_free_settings;
627	ret->keepalive = jabber_keepalive;
628	ret->send_typing = jabber_send_typing;
629	ret->handle_cmp = g_strcasecmp;
630	ret->transfer_request = jabber_si_transfer_request;
631	ret->buddy_action_list = jabber_buddy_action_list;
632	ret->buddy_action = jabber_buddy_action;
633
634	register_protocol( ret );
635	}

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