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source: protocols/jabber/jabber.c @ 664bac3

Last change on this file since 664bac3 was c27a923, checked in by dequis <dx@…>, at 2014-10-11T02:20:52Z

Remove MSNXMPP specific code

The MSN XMPP gateway was shutdown december 2013 and isn't coming back.

Property mode set to 100644

File size: 18.4 KB

Line
1	/***************************************************************************\
2	* *
3	* BitlBee - An IRC to IM gateway *
4	* Jabber module - Main file *
5	* *
6	* Copyright 2006-2013 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 "oauth.h"
35	#include "md5.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	s = set_add( &acc->set, "activity_timeout", "600", set_eval_int, acc );
62
63	s = set_add( &acc->set, "oauth", "false", set_eval_oauth, acc );
64
65	g_snprintf( str, sizeof( str ), "%d", jabber_port_list[0] );
66	s = set_add( &acc->set, "port", str, set_eval_int, acc );
67	s->flags \|= ACC_SET_OFFLINE_ONLY;
68
69	s = set_add( &acc->set, "priority", "0", set_eval_priority, acc );
70
71	s = set_add( &acc->set, "proxy", "<local>;<auto>", NULL, acc );
72
73	s = set_add( &acc->set, "resource", "BitlBee", NULL, acc );
74	s->flags \|= ACC_SET_OFFLINE_ONLY;
75
76	s = set_add( &acc->set, "resource_select", "activity", NULL, acc );
77
78	s = set_add( &acc->set, "sasl", "true", set_eval_bool, acc );
79	s->flags \|= ACC_SET_OFFLINE_ONLY \| SET_HIDDEN_DEFAULT;
80
81	s = set_add( &acc->set, "server", NULL, set_eval_account, acc );
82	s->flags \|= SET_NOSAVE \| ACC_SET_OFFLINE_ONLY \| SET_NULL_OK;
83
84	s = set_add( &acc->set, "ssl", "false", set_eval_bool, acc );
85	s->flags \|= ACC_SET_OFFLINE_ONLY;
86
87	s = set_add( &acc->set, "tls", "true", set_eval_tls, acc );
88	s->flags \|= ACC_SET_OFFLINE_ONLY;
89
90	s = set_add( &acc->set, "tls_verify", "true", set_eval_bool, acc );
91	s->flags \|= ACC_SET_OFFLINE_ONLY;
92
93	s = set_add( &acc->set, "user_agent", "BitlBee", NULL, acc );
94
95	s = set_add( &acc->set, "xmlconsole", "false", set_eval_bool, acc );
96	s->flags \|= ACC_SET_OFFLINE_ONLY;
97
98	acc->flags \|= ACC_FLAG_AWAY_MESSAGE \| ACC_FLAG_STATUS_MESSAGE \|
99	ACC_FLAG_HANDLE_DOMAINS;
100	}
101
102	static void jabber_generate_id_hash( struct jabber_data *jd );
103
104	static void jabber_login( account_t *acc )
105	{
106	struct im_connection *ic = imcb_new( acc );
107	struct jabber_data *jd = g_new0( struct jabber_data, 1 );
108	char *s;
109
110	/* For now this is needed in the _connected() handlers if using
111	GLib event handling, to make sure we're not handling events
112	on dead connections. */
113	jabber_connections = g_slist_prepend( jabber_connections, ic );
114
115	jd->ic = ic;
116	ic->proto_data = jd;
117
118	jabber_set_me( ic, acc->user );
119
120	jd->fd = jd->r_inpa = jd->w_inpa = -1;
121
122	if( jd->server == NULL )
123	{
124	imcb_error( ic, "Incomplete account name (format it like <username@jabberserver.name>)" );
125	imc_logout( ic, FALSE );
126	return;
127	}
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	GSList *p_in = NULL;
146	const char *tok;
147
148	jd->fd = jd->r_inpa = jd->w_inpa = -1;
149
150	if( strstr( jd->server, ".facebook.com" ) )
151	jd->oauth2_service = &oauth2_service_facebook;
152	else
153	jd->oauth2_service = &oauth2_service_google;
154
155	oauth_params_parse( &p_in, ic->acc->pass );
156
157	/* First see if we have a refresh token, in which case any
158	access token we might have has probably expired already
159	anyway. */
160	if( ( tok = oauth_params_get( &p_in, "refresh_token" ) ) )
161	{
162	sasl_oauth2_refresh( ic, tok );
163	}
164	/* If we don't have a refresh token, let's hope the access
165	token is still usable. */
166	else if( ( tok = oauth_params_get( &p_in, "access_token" ) ) )
167	{
168	jd->oauth2_access_token = g_strdup( tok );
169	jabber_connect( ic );
170	}
171	/* If we don't have any, start the OAuth process now. Don't
172	even open an XMPP connection yet. */
173	else
174	{
175	sasl_oauth2_init( ic );
176	ic->flags \|= OPT_SLOW_LOGIN;
177	}
178
179	oauth_params_free( &p_in );
180	}
181	else
182	jabber_connect( ic );
183	}
184
185	/* Separate this from jabber_login() so we can do OAuth first if necessary.
186	Putting this in io.c would probably be more correct. */
187	void jabber_connect( struct im_connection *ic )
188	{
189	account_t *acc = ic->acc;
190	struct jabber_data *jd = ic->proto_data;
191	int i;
192	char *connect_to;
193	struct ns_srv_reply *srvl = NULL, srv = NULL;
194
195	/* Figure out the hostname to connect to. */
196	if( acc->server && *acc->server )
197	connect_to = acc->server;
198	else if( ( srvl = srv_lookup( "xmpp-client", "tcp", jd->server ) ) \|\|
199	( srvl = srv_lookup( "jabber-client", "tcp", jd->server ) ) )
200	{
201	/* Find the lowest-priority one. These usually come
202	back in random/shuffled order. Not looking at
203	weights etc for now. */
204	srv = *srvl;
205	for( i = 1; srvl[i]; i ++ )
206	if( srvl[i]->prio < srv->prio )
207	srv = srvl[i];
208
209	connect_to = srv->name;
210	}
211	else
212	connect_to = jd->server;
213
214	imcb_log( ic, "Connecting" );
215
216	for( i = 0; jabber_port_list[i] > 0; i ++ )
217	if( set_getint( &acc->set, "port" ) == jabber_port_list[i] )
218	break;
219
220	if( jabber_port_list[i] == 0 )
221	{
222	imcb_log( ic, "Illegal port number" );
223	imc_logout( ic, FALSE );
224	return;
225	}
226
227	/* For non-SSL connections we can try to use the port # from the SRV
228	reply, but let's not do that when using SSL, SSL usually runs on
229	non-standard ports... */
230	if( set_getbool( &acc->set, "ssl" ) )
231	{
232	jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), set_getbool( &acc->set, "tls_verify" ), jabber_connected_ssl, ic );
233	jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1;
234	}
235	else
236	{
237	jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic );
238	}
239	srv_free( srvl );
240
241	if( jd->fd == -1 )
242	{
243	imcb_error( ic, "Could not connect to server" );
244	imc_logout( ic, TRUE );
245
246	return;
247	}
248
249	if( set_getbool( &acc->set, "xmlconsole" ) )
250	{
251	jd->flags \|= JFLAG_XMLCONSOLE;
252	/* Shouldn't really do this at this stage already, maybe. But
253	I think this shouldn't break anything. */
254	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
255	}
256
257	jabber_generate_id_hash( jd );
258	}
259
260	/* This generates an unfinished md5_state_t variable. Every time we generate
261	an ID, we finish the state by adding a sequence number and take the hash. */
262	static void jabber_generate_id_hash( struct jabber_data *jd )
263	{
264	md5_byte_t binbuf[4];
265	char *s;
266
267	md5_init( &jd->cached_id_prefix );
268	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->username, strlen( jd->username ) );
269	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->server, strlen( jd->server ) );
270	s = set_getstr( &jd->ic->acc->set, "resource" );
271	md5_append( &jd->cached_id_prefix, (unsigned char *) s, strlen( s ) );
272	random_bytes( binbuf, 4 );
273	md5_append( &jd->cached_id_prefix, binbuf, 4 );
274	}
275
276	static void jabber_logout( struct im_connection *ic )
277	{
278	struct jabber_data *jd = ic->proto_data;
279
280	while( jd->filetransfers )
281	imcb_file_canceled( ic, ( ( struct jabber_transfer *) jd->filetransfers->data )->ft, "Logging out" );
282
283	while( jd->streamhosts )
284	{
285	jabber_streamhost_t *sh = jd->streamhosts->data;
286	jd->streamhosts = g_slist_remove( jd->streamhosts, sh );
287	g_free( sh->jid );
288	g_free( sh->host );
289	g_free( sh );
290	}
291
292	if( jd->fd >= 0 )
293	jabber_end_stream( ic );
294
295	while( ic->groupchats )
296	jabber_chat_free( ic->groupchats->data );
297
298	if( jd->r_inpa >= 0 )
299	b_event_remove( jd->r_inpa );
300	if( jd->w_inpa >= 0 )
301	b_event_remove( jd->w_inpa );
302
303	if( jd->ssl )
304	ssl_disconnect( jd->ssl );
305	if( jd->fd >= 0 )
306	closesocket( jd->fd );
307
308	if( jd->tx_len )
309	g_free( jd->txq );
310
311	if( jd->node_cache )
312	g_hash_table_destroy( jd->node_cache );
313
314	jabber_buddy_remove_all( ic );
315
316	xt_free( jd->xt );
317
318	g_free( jd->oauth2_access_token );
319	g_free( jd->away_message );
320	g_free( jd->username );
321	g_free( jd->me );
322	g_free( jd );
323
324	jabber_connections = g_slist_remove( jabber_connections, ic );
325	}
326
327	static int jabber_buddy_msg( struct im_connection ic, char who, char *message, int flags )
328	{
329	struct jabber_data *jd = ic->proto_data;
330	struct jabber_buddy *bud;
331	struct xt_node *node;
332	char *s;
333	int st;
334
335	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
336	return jabber_write( ic, message, strlen( message ) );
337
338	if( g_strcasecmp( who, JABBER_OAUTH_HANDLE ) == 0 &&
339	!( jd->flags & OPT_LOGGED_IN ) && jd->fd == -1 )
340	{
341	if( sasl_oauth2_get_refresh_token( ic, message ) )
342	{
343	return 1;
344	}
345	else
346	{
347	imcb_error( ic, "OAuth failure" );
348	imc_logout( ic, TRUE );
349	return 0;
350	}
351	}
352
353	if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
354	bud = jabber_buddy_by_ext_jid( ic, who, 0 );
355	else
356	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_BARE_OK );
357
358	node = xt_new_node( "body", message, NULL );
359	node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node );
360
361	if( bud && ( jd->flags & JFLAG_WANT_TYPING ) &&
362	( ( bud->flags & JBFLAG_DOES_XEP85 ) \|\|
363	!( bud->flags & JBFLAG_PROBED_XEP85 ) ) )
364	{
365	struct xt_node *act;
366
367	/* If the user likes typing notification and if we don't know
368	(and didn't probe before) if this resource supports XEP85,
369	include a probe in this packet now. Also, if we know this
370	buddy does support XEP85, we have to send this <active/>
371	tag to tell that the user stopped typing (well, that's what
372	we guess when s/he pressed Enter...). */
373	act = xt_new_node( "active", NULL, NULL );
374	xt_add_attr( act, "xmlns", XMLNS_CHATSTATES );
375	xt_add_child( node, act );
376
377	/* Just make sure we do this only once. */
378	bud->flags \|= JBFLAG_PROBED_XEP85;
379	}
380
381	st = jabber_write_packet( ic, node );
382	xt_free_node( node );
383
384	return st;
385	}
386
387	static GList jabber_away_states( struct im_connection ic )
388	{
389	static GList *l = NULL;
390	int i;
391
392	if( l == NULL )
393	for( i = 0; jabber_away_state_list[i].full_name; i ++ )
394	l = g_list_append( l, (void*) jabber_away_state_list[i].full_name );
395
396	return l;
397	}
398
399	static void jabber_get_info( struct im_connection ic, char who )
400	{
401	struct jabber_buddy *bud;
402
403	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_FIRST );
404
405	while( bud )
406	{
407	imcb_log( ic, "Buddy %s (%d) information:", bud->full_jid, bud->priority );
408	if( bud->away_state )
409	imcb_log( ic, "Away state: %s", bud->away_state->full_name );
410	imcb_log( ic, "Status message: %s", bud->away_message ? bud->away_message : "(none)" );
411
412	bud = bud->next;
413	}
414
415	jabber_get_vcard( ic, bud ? bud->full_jid : who );
416	}
417
418	static void jabber_set_away( struct im_connection ic, char state_txt, char *message )
419	{
420	struct jabber_data *jd = ic->proto_data;
421
422	/* state_txt == NULL -> Not away.
423	Unknown state -> fall back to the first defined away state. */
424	if( state_txt == NULL )
425	jd->away_state = NULL;
426	else if( ( jd->away_state = jabber_away_state_by_name( state_txt ) ) == NULL )
427	jd->away_state = jabber_away_state_list;
428
429	g_free( jd->away_message );
430	jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL;
431
432	presence_send_update( ic );
433	}
434
435	static void jabber_add_buddy( struct im_connection ic, char who, char *group )
436	{
437	struct jabber_data *jd = ic->proto_data;
438
439	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
440	{
441	jd->flags \|= JFLAG_XMLCONSOLE;
442	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
443	return;
444	}
445
446	if( jabber_add_to_roster( ic, who, NULL, group ) )
447	presence_send_request( ic, who, "subscribe" );
448	}
449
450	static void jabber_remove_buddy( struct im_connection ic, char who, char *group )
451	{
452	struct jabber_data *jd = ic->proto_data;
453
454	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
455	{
456	jd->flags &= ~JFLAG_XMLCONSOLE;
457	/* Not necessary for now. And for now the code isn't too
458	happy if the buddy is completely gone right after calling
459	this function already.
460	imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
461	*/
462	return;
463	}
464
465	/* We should always do this part. Clean up our administration a little bit. */
466	jabber_buddy_remove_bare( ic, who );
467
468	if( jabber_remove_from_roster( ic, who ) )
469	presence_send_request( ic, who, "unsubscribe" );
470	}
471
472	static struct groupchat jabber_chat_join_( struct im_connection ic, const char room, const char nick, const char password, set_t *sets )
473	{
474	struct jabber_data *jd = ic->proto_data;
475
476	if( strchr( room, '@' ) == NULL )
477	imcb_error( ic, "%s is not a valid Jabber room name. Maybe you mean %s@conference.%s?",
478	room, room, jd->server );
479	else if( jabber_chat_by_jid( ic, room ) )
480	imcb_error( ic, "Already present in chat `%s'", room );
481	else
482	return jabber_chat_join( ic, room, nick, set_getstr( sets, "password" ) );
483
484	return NULL;
485	}
486
487	static struct groupchat jabber_chat_with_( struct im_connection ic, char *who )
488	{
489	return jabber_chat_with( ic, who );
490	}
491
492	static void jabber_chat_msg_( struct groupchat c, char message, int flags )
493	{
494	if( c && message )
495	jabber_chat_msg( c, message, flags );
496	}
497
498	static void jabber_chat_topic_( struct groupchat c, char topic )
499	{
500	if( c && topic )
501	jabber_chat_topic( c, topic );
502	}
503
504	static void jabber_chat_leave_( struct groupchat *c )
505	{
506	if( c )
507	jabber_chat_leave( c, NULL );
508	}
509
510	static void jabber_chat_invite_( struct groupchat c, char who, char *msg )
511	{
512	struct jabber_data *jd = c->ic->proto_data;
513	struct jabber_chat *jc = c->data;
514	gchar *msg_alt = NULL;
515
516	if( msg == NULL )
517	msg_alt = g_strdup_printf( "%s invited you to %s", jd->me, jc->name );
518
519	if( c && who )
520	jabber_chat_invite( c, who, msg ? msg : msg_alt );
521
522	g_free( msg_alt );
523	}
524
525	static void jabber_keepalive( struct im_connection *ic )
526	{
527	/* Just any whitespace character is enough as a keepalive for XMPP sessions. */
528	if( !jabber_write( ic, "\n", 1 ) )
529	return;
530
531	/* This runs the garbage collection every minute, which means every packet
532	is in the cache for about a minute (which should be enough AFAIK). */
533	jabber_cache_clean( ic );
534	}
535
536	static int jabber_send_typing( struct im_connection ic, char who, int typing )
537	{
538	struct jabber_data *jd = ic->proto_data;
539	struct jabber_buddy *bud;
540
541	/* Enable typing notification related code from now. */
542	jd->flags \|= JFLAG_WANT_TYPING;
543
544	if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL )
545	{
546	/* Sending typing notifications to unknown buddies is
547	unsupported for now. Shouldn't be a problem, I think. */
548	return 0;
549	}
550
551	if( bud->flags & JBFLAG_DOES_XEP85 )
552	{
553	/* We're only allowed to send this stuff if we know the other
554	side supports it. */
555
556	struct xt_node *node;
557	char *type;
558	int st;
559
560	if( typing & OPT_TYPING )
561	type = "composing";
562	else if( typing & OPT_THINKING )
563	type = "paused";
564	else
565	type = "active";
566
567	node = xt_new_node( type, NULL, NULL );
568	xt_add_attr( node, "xmlns", XMLNS_CHATSTATES );
569	node = jabber_make_packet( "message", "chat", bud->full_jid, node );
570
571	st = jabber_write_packet( ic, node );
572	xt_free_node( node );
573
574	return st;
575	}
576
577	return 1;
578	}
579
580	void jabber_chat_add_settings( account_t acc, set_t *head )
581	{
582	/* Meh. Stupid room passwords. Not trying to obfuscate/hide
583	them from the user for now. */
584	set_add( head, "password", NULL, NULL, NULL );
585	}
586
587	void jabber_chat_free_settings( account_t acc, set_t *head )
588	{
589	set_del( head, "password" );
590	}
591
592	GList jabber_buddy_action_list( bee_user_t bu )
593	{
594	static GList *ret = NULL;
595
596	if( ret == NULL )
597	{
598	static const struct buddy_action ba[2] = {
599	{ "VERSION", "Get client (version) information" },
600	};
601
602	ret = g_list_prepend( ret, (void*) ba + 0 );
603	}
604
605	return ret;
606	}
607
608	void jabber_buddy_action( struct bee_user bu, const char action, char const args[], void *data )
609	{
610	if( g_strcasecmp( action, "VERSION" ) == 0 )
611	{
612	struct jabber_buddy *bud;
613
614	if( ( bud = jabber_buddy_by_ext_jid( bu->ic, bu->handle, 0 ) ) == NULL )
615	bud = jabber_buddy_by_jid( bu->ic, bu->handle, GET_BUDDY_FIRST );
616	for( ; bud; bud = bud->next )
617	jabber_iq_version_send( bu->ic, bud, data );
618	}
619
620	return NULL;
621	}
622
623	void jabber_initmodule()
624	{
625	struct prpl *ret = g_new0( struct prpl, 1 );
626
627	ret->name = "jabber";
628	ret->mms = 0; /* no limit */
629	ret->login = jabber_login;
630	ret->init = jabber_init;
631	ret->logout = jabber_logout;
632	ret->buddy_msg = jabber_buddy_msg;
633	ret->away_states = jabber_away_states;
634	ret->set_away = jabber_set_away;
635	// ret->set_info = jabber_set_info;
636	ret->get_info = jabber_get_info;
637	ret->add_buddy = jabber_add_buddy;
638	ret->remove_buddy = jabber_remove_buddy;
639	ret->chat_msg = jabber_chat_msg_;
640	ret->chat_topic = jabber_chat_topic_;
641	ret->chat_invite = jabber_chat_invite_;
642	ret->chat_leave = jabber_chat_leave_;
643	ret->chat_join = jabber_chat_join_;
644	ret->chat_with = jabber_chat_with_;
645	ret->chat_add_settings = jabber_chat_add_settings;
646	ret->chat_free_settings = jabber_chat_free_settings;
647	ret->keepalive = jabber_keepalive;
648	ret->send_typing = jabber_send_typing;
649	ret->handle_cmp = g_strcasecmp;
650	ret->transfer_request = jabber_si_transfer_request;
651	ret->buddy_action_list = jabber_buddy_action_list;
652	ret->buddy_action = jabber_buddy_action;
653
654	register_protocol( ret );
655	}

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