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source: protocols/jabber/jabber.c @ 0dd6570

Last change on this file since 0dd6570 was ce199b7, checked in by Wilmer van der Gaast <wilmer@…>, at 2011-12-21T11:21:04Z
Make it easier to add OAuth-authenticated accounts without having to type a bogus password.
Property mode set to `100644`
File size: 18.0 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 "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 \|= ACC_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", "try", set_eval_tls, acc );
88	s->flags \|= ACC_SET_OFFLINE_ONLY;
89
90	s = set_add( &acc->set, "user_agent", "BitlBee", NULL, acc );
91
92	s = set_add( &acc->set, "xmlconsole", "false", set_eval_bool, acc );
93	s->flags \|= ACC_SET_OFFLINE_ONLY;
94
95	acc->flags \|= ACC_FLAG_AWAY_MESSAGE \| ACC_FLAG_STATUS_MESSAGE;
96	}
97
98	static void jabber_generate_id_hash( struct jabber_data *jd );
99
100	static void jabber_login( account_t *acc )
101	{
102	struct im_connection *ic = imcb_new( acc );
103	struct jabber_data *jd = g_new0( struct jabber_data, 1 );
104	char *s;
105
106	/* For now this is needed in the _connected() handlers if using
107	GLib event handling, to make sure we're not handling events
108	on dead connections. */
109	jabber_connections = g_slist_prepend( jabber_connections, ic );
110
111	jd->ic = ic;
112	ic->proto_data = jd;
113
114	jabber_set_me( ic, acc->user );
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	if( ( s = strchr( jd->server, '/' ) ) )
126	{
127	*s = 0;
128	set_setstr( &acc->set, "resource", s + 1 );
129
130	/* Also remove the /resource from the original variable so we
131	won't have to do this again every time. */
132	s = strchr( acc->user, '/' );
133	*s = 0;
134	}
135
136	jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
137	jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
138
139	if( set_getbool( &acc->set, "oauth" ) )
140	{
141	GSList *p_in = NULL;
142	const char *tok;
143
144	jd->fd = jd->r_inpa = jd->w_inpa = -1;
145
146	if( strstr( jd->server, ".live.com" ) )
147	jd->oauth2_service = &oauth2_service_mslive;
148	else if( strstr( jd->server, ".facebook.com" ) )
149	jd->oauth2_service = &oauth2_service_facebook;
150	else
151	jd->oauth2_service = &oauth2_service_google;
152
153	oauth_params_parse( &p_in, ic->acc->pass );
154
155	/* First see if we have a refresh token, in which case any
156	access token we might have has probably expired already
157	anyway. */
158	if( ( tok = oauth_params_get( &p_in, "refresh_token" ) ) )
159	{
160	sasl_oauth2_refresh( ic, tok );
161	}
162	/* If we don't have a refresh token, let's hope the access
163	token is still usable. */
164	else if( ( tok = oauth_params_get( &p_in, "access_token" ) ) )
165	{
166	jd->oauth2_access_token = g_strdup( tok );
167	jabber_connect( ic );
168	}
169	/* If we don't have any, start the OAuth process now. Don't
170	even open an XMPP connection yet. */
171	else
172	{
173	sasl_oauth2_init( ic );
174	ic->flags \|= OPT_SLOW_LOGIN;
175	}
176
177	oauth_params_free( &p_in );
178	}
179	else
180	jabber_connect( ic );
181	}
182
183	/* Separate this from jabber_login() so we can do OAuth first if necessary.
184	Putting this in io.c would probably be more correct. */
185	void jabber_connect( struct im_connection *ic )
186	{
187	account_t *acc = ic->acc;
188	struct jabber_data *jd = ic->proto_data;
189	int i;
190	char *connect_to;
191	struct ns_srv_reply *srvl = NULL, srv = NULL;
192
193	/* Figure out the hostname to connect to. */
194	if( acc->server && *acc->server )
195	connect_to = acc->server;
196	else if( ( srvl = srv_lookup( "xmpp-client", "tcp", jd->server ) ) \|\|
197	( srvl = srv_lookup( "jabber-client", "tcp", jd->server ) ) )
198	{
199	/* Find the lowest-priority one. These usually come
200	back in random/shuffled order. Not looking at
201	weights etc for now. */
202	srv = *srvl;
203	for( i = 1; srvl[i]; i ++ )
204	if( srvl[i]->prio < srv->prio )
205	srv = srvl[i];
206
207	connect_to = srv->name;
208	}
209	else
210	connect_to = jd->server;
211
212	imcb_log( ic, "Connecting" );
213
214	for( i = 0; jabber_port_list[i] > 0; i ++ )
215	if( set_getint( &acc->set, "port" ) == jabber_port_list[i] )
216	break;
217
218	if( jabber_port_list[i] == 0 )
219	{
220	imcb_log( ic, "Illegal port number" );
221	imc_logout( ic, FALSE );
222	return;
223	}
224
225	/* For non-SSL connections we can try to use the port # from the SRV
226	reply, but let's not do that when using SSL, SSL usually runs on
227	non-standard ports... */
228	if( set_getbool( &acc->set, "ssl" ) )
229	{
230	jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), jabber_connected_ssl, ic );
231	jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1;
232	}
233	else
234	{
235	jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic );
236	}
237	srv_free( srvl );
238
239	if( jd->fd == -1 )
240	{
241	imcb_error( ic, "Could not connect to server" );
242	imc_logout( ic, TRUE );
243
244	return;
245	}
246
247	if( set_getbool( &acc->set, "xmlconsole" ) )
248	{
249	jd->flags \|= JFLAG_XMLCONSOLE;
250	/* Shouldn't really do this at this stage already, maybe. But
251	I think this shouldn't break anything. */
252	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
253	}
254
255	jabber_generate_id_hash( jd );
256	}
257
258	/* This generates an unfinished md5_state_t variable. Every time we generate
259	an ID, we finish the state by adding a sequence number and take the hash. */
260	static void jabber_generate_id_hash( struct jabber_data *jd )
261	{
262	md5_byte_t binbuf[4];
263	char *s;
264
265	md5_init( &jd->cached_id_prefix );
266	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->username, strlen( jd->username ) );
267	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->server, strlen( jd->server ) );
268	s = set_getstr( &jd->ic->acc->set, "resource" );
269	md5_append( &jd->cached_id_prefix, (unsigned char *) s, strlen( s ) );
270	random_bytes( binbuf, 4 );
271	md5_append( &jd->cached_id_prefix, binbuf, 4 );
272	}
273
274	static void jabber_logout( struct im_connection *ic )
275	{
276	struct jabber_data *jd = ic->proto_data;
277
278	while( jd->filetransfers )
279	imcb_file_canceled( ic, ( ( struct jabber_transfer *) jd->filetransfers->data )->ft, "Logging out" );
280
281	while( jd->streamhosts )
282	{
283	jabber_streamhost_t *sh = jd->streamhosts->data;
284	jd->streamhosts = g_slist_remove( jd->streamhosts, sh );
285	g_free( sh->jid );
286	g_free( sh->host );
287	g_free( sh );
288	}
289
290	if( jd->fd >= 0 )
291	jabber_end_stream( ic );
292
293	while( ic->groupchats )
294	jabber_chat_free( ic->groupchats->data );
295
296	if( jd->r_inpa >= 0 )
297	b_event_remove( jd->r_inpa );
298	if( jd->w_inpa >= 0 )
299	b_event_remove( jd->w_inpa );
300
301	if( jd->ssl )
302	ssl_disconnect( jd->ssl );
303	if( jd->fd >= 0 )
304	closesocket( jd->fd );
305
306	if( jd->tx_len )
307	g_free( jd->txq );
308
309	if( jd->node_cache )
310	g_hash_table_destroy( jd->node_cache );
311
312	jabber_buddy_remove_all( ic );
313
314	xt_free( jd->xt );
315
316	g_free( jd->oauth2_access_token );
317	g_free( jd->away_message );
318	g_free( jd->username );
319	g_free( jd->me );
320	g_free( jd );
321
322	jabber_connections = g_slist_remove( jabber_connections, ic );
323	}
324
325	static int jabber_buddy_msg( struct im_connection ic, char who, char *message, int flags )
326	{
327	struct jabber_data *jd = ic->proto_data;
328	struct jabber_buddy *bud;
329	struct xt_node *node;
330	char *s;
331	int st;
332
333	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
334	return jabber_write( ic, message, strlen( message ) );
335
336	if( g_strcasecmp( who, "jabber_oauth" ) == 0 )
337	{
338	if( sasl_oauth2_get_refresh_token( ic, message ) )
339	{
340	return 1;
341	}
342	else
343	{
344	imcb_error( ic, "OAuth failure" );
345	imc_logout( ic, TRUE );
346	return 0;
347	}
348	}
349
350	if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
351	bud = jabber_buddy_by_ext_jid( ic, who, 0 );
352	else
353	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_BARE_OK );
354
355	node = xt_new_node( "body", message, NULL );
356	node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node );
357
358	if( bud && ( jd->flags & JFLAG_WANT_TYPING ) &&
359	( ( bud->flags & JBFLAG_DOES_XEP85 ) \|\|
360	!( bud->flags & JBFLAG_PROBED_XEP85 ) ) )
361	{
362	struct xt_node *act;
363
364	/* If the user likes typing notification and if we don't know
365	(and didn't probe before) if this resource supports XEP85,
366	include a probe in this packet now. Also, if we know this
367	buddy does support XEP85, we have to send this <active/>
368	tag to tell that the user stopped typing (well, that's what
369	we guess when s/he pressed Enter...). */
370	act = xt_new_node( "active", NULL, NULL );
371	xt_add_attr( act, "xmlns", XMLNS_CHATSTATES );
372	xt_add_child( node, act );
373
374	/* Just make sure we do this only once. */
375	bud->flags \|= JBFLAG_PROBED_XEP85;
376	}
377
378	st = jabber_write_packet( ic, node );
379	xt_free_node( node );
380
381	return st;
382	}
383
384	static GList jabber_away_states( struct im_connection ic )
385	{
386	static GList *l = NULL;
387	int i;
388
389	if( l == NULL )
390	for( i = 0; jabber_away_state_list[i].full_name; i ++ )
391	l = g_list_append( l, (void*) jabber_away_state_list[i].full_name );
392
393	return l;
394	}
395
396	static void jabber_get_info( struct im_connection ic, char who )
397	{
398	struct jabber_buddy *bud;
399
400	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_FIRST );
401
402	while( bud )
403	{
404	imcb_log( ic, "Buddy %s (%d) information:", bud->full_jid, bud->priority );
405	if( bud->away_state )
406	imcb_log( ic, "Away state: %s", bud->away_state->full_name );
407	imcb_log( ic, "Status message: %s", bud->away_message ? bud->away_message : "(none)" );
408
409	bud = bud->next;
410	}
411
412	jabber_get_vcard( ic, bud ? bud->full_jid : who );
413	}
414
415	static void jabber_set_away( struct im_connection ic, char state_txt, char *message )
416	{
417	struct jabber_data *jd = ic->proto_data;
418
419	/* state_txt == NULL -> Not away.
420	Unknown state -> fall back to the first defined away state. */
421	if( state_txt == NULL )
422	jd->away_state = NULL;
423	else if( ( jd->away_state = jabber_away_state_by_name( state_txt ) ) == NULL )
424	jd->away_state = jabber_away_state_list;
425
426	g_free( jd->away_message );
427	jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL;
428
429	presence_send_update( ic );
430	}
431
432	static void jabber_add_buddy( struct im_connection ic, char who, char *group )
433	{
434	struct jabber_data *jd = ic->proto_data;
435
436	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
437	{
438	jd->flags \|= JFLAG_XMLCONSOLE;
439	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
440	return;
441	}
442
443	if( jabber_add_to_roster( ic, who, NULL, group ) )
444	presence_send_request( ic, who, "subscribe" );
445	}
446
447	static void jabber_remove_buddy( struct im_connection ic, char who, char *group )
448	{
449	struct jabber_data *jd = ic->proto_data;
450
451	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
452	{
453	jd->flags &= ~JFLAG_XMLCONSOLE;
454	/* Not necessary for now. And for now the code isn't too
455	happy if the buddy is completely gone right after calling
456	this function already.
457	imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
458	*/
459	return;
460	}
461
462	/* We should always do this part. Clean up our administration a little bit. */
463	jabber_buddy_remove_bare( ic, who );
464
465	if( jabber_remove_from_roster( ic, who ) )
466	presence_send_request( ic, who, "unsubscribe" );
467	}
468
469	static struct groupchat jabber_chat_join_( struct im_connection ic, const char room, const char nick, const char password, set_t *sets )
470	{
471	if( strchr( room, '@' ) == NULL )
472	imcb_error( ic, "Invalid room name: %s", room );
473	else if( jabber_chat_by_jid( ic, room ) )
474	imcb_error( ic, "Already present in chat `%s'", room );
475	else
476	return jabber_chat_join( ic, room, nick, set_getstr( sets, "password" ) );
477
478	return NULL;
479	}
480
481	static void jabber_chat_msg_( struct groupchat c, char message, int flags )
482	{
483	if( c && message )
484	jabber_chat_msg( c, message, flags );
485	}
486
487	static void jabber_chat_topic_( struct groupchat c, char topic )
488	{
489	if( c && topic )
490	jabber_chat_topic( c, topic );
491	}
492
493	static void jabber_chat_leave_( struct groupchat *c )
494	{
495	if( c )
496	jabber_chat_leave( c, NULL );
497	}
498
499	static void jabber_chat_invite_( struct groupchat c, char who, char *msg )
500	{
501	struct jabber_data *jd = c->ic->proto_data;
502	struct jabber_chat *jc = c->data;
503	gchar *msg_alt = NULL;
504
505	if( msg == NULL )
506	msg_alt = g_strdup_printf( "%s invited you to %s", jd->me, jc->name );
507
508	if( c && who )
509	jabber_chat_invite( c, who, msg ? msg : msg_alt );
510
511	g_free( msg_alt );
512	}
513
514	static void jabber_keepalive( struct im_connection *ic )
515	{
516	/* Just any whitespace character is enough as a keepalive for XMPP sessions. */
517	if( !jabber_write( ic, "\n", 1 ) )
518	return;
519
520	/* This runs the garbage collection every minute, which means every packet
521	is in the cache for about a minute (which should be enough AFAIK). */
522	jabber_cache_clean( ic );
523	}
524
525	static int jabber_send_typing( struct im_connection ic, char who, int typing )
526	{
527	struct jabber_data *jd = ic->proto_data;
528	struct jabber_buddy *bud;
529
530	/* Enable typing notification related code from now. */
531	jd->flags \|= JFLAG_WANT_TYPING;
532
533	if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL )
534	{
535	/* Sending typing notifications to unknown buddies is
536	unsupported for now. Shouldn't be a problem, I think. */
537	return 0;
538	}
539
540	if( bud->flags & JBFLAG_DOES_XEP85 )
541	{
542	/* We're only allowed to send this stuff if we know the other
543	side supports it. */
544
545	struct xt_node *node;
546	char *type;
547	int st;
548
549	if( typing & OPT_TYPING )
550	type = "composing";
551	else if( typing & OPT_THINKING )
552	type = "paused";
553	else
554	type = "active";
555
556	node = xt_new_node( type, NULL, NULL );
557	xt_add_attr( node, "xmlns", XMLNS_CHATSTATES );
558	node = jabber_make_packet( "message", "chat", bud->full_jid, node );
559
560	st = jabber_write_packet( ic, node );
561	xt_free_node( node );
562
563	return st;
564	}
565
566	return 1;
567	}
568
569	void jabber_chat_add_settings( account_t acc, set_t *head )
570	{
571	/* Meh. Stupid room passwords. Not trying to obfuscate/hide
572	them from the user for now. */
573	set_add( head, "password", NULL, NULL, NULL );
574	}
575
576	void jabber_chat_free_settings( account_t acc, set_t *head )
577	{
578	set_del( head, "password" );
579	}
580
581	GList jabber_buddy_action_list( bee_user_t bu )
582	{
583	static GList *ret = NULL;
584
585	if( ret == NULL )
586	{
587	static const struct buddy_action ba[2] = {
588	{ "VERSION", "Get client (version) information" },
589	};
590
591	ret = g_list_prepend( ret, (void*) ba + 0 );
592	}
593
594	return ret;
595	}
596
597	void jabber_buddy_action( struct bee_user bu, const char action, char const args[], void *data )
598	{
599	if( g_strcasecmp( action, "VERSION" ) == 0 )
600	{
601	struct jabber_buddy *bud;
602
603	if( ( bud = jabber_buddy_by_ext_jid( bu->ic, bu->handle, 0 ) ) == NULL )
604	bud = jabber_buddy_by_jid( bu->ic, bu->handle, GET_BUDDY_FIRST );
605	for( ; bud; bud = bud->next )
606	jabber_iq_version_send( bu->ic, bud, data );
607	}
608
609	return NULL;
610	}
611
612	void jabber_initmodule()
613	{
614	struct prpl *ret = g_new0( struct prpl, 1 );
615
616	ret->name = "jabber";
617	ret->mms = 0; /* no limit */
618	ret->login = jabber_login;
619	ret->init = jabber_init;
620	ret->logout = jabber_logout;
621	ret->buddy_msg = jabber_buddy_msg;
622	ret->away_states = jabber_away_states;
623	ret->set_away = jabber_set_away;
624	// ret->set_info = jabber_set_info;
625	ret->get_info = jabber_get_info;
626	ret->add_buddy = jabber_add_buddy;
627	ret->remove_buddy = jabber_remove_buddy;
628	ret->chat_msg = jabber_chat_msg_;
629	ret->chat_topic = jabber_chat_topic_;
630	ret->chat_invite = jabber_chat_invite_;
631	ret->chat_leave = jabber_chat_leave_;
632	ret->chat_join = jabber_chat_join_;
633	ret->chat_add_settings = jabber_chat_add_settings;
634	ret->chat_free_settings = jabber_chat_free_settings;
635	ret->keepalive = jabber_keepalive;
636	ret->send_typing = jabber_send_typing;
637	ret->handle_cmp = g_strcasecmp;
638	ret->transfer_request = jabber_si_transfer_request;
639	ret->buddy_action_list = jabber_buddy_action_list;
640	ret->buddy_action = jabber_buddy_action;
641
642	register_protocol( ret );
643	}

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