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source: protocols/jabber/jabber.c @ 39a939c

Last change on this file since 39a939c was 4a5d885, checked in by Wilmer van der Gaast <wilmer@…>, at 2011-07-26T11:58:38Z
Working OAuth2 support. Needs some more debugging (error handling is not great and imc_logout() gets (rightfully) confused when jabber_data is empty).
Property mode set to `100644`
File size: 17.2 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, "user_agent", "BitlBee", NULL, acc );
87
88	s = set_add( &acc->set, "xmlconsole", "false", set_eval_bool, acc );
89	s->flags \|= ACC_SET_OFFLINE_ONLY;
90
91	acc->flags \|= ACC_FLAG_AWAY_MESSAGE \| ACC_FLAG_STATUS_MESSAGE;
92	}
93
94	static void jabber_generate_id_hash( struct jabber_data *jd );
95
96	static void jabber_login( account_t *acc )
97	{
98	struct im_connection *ic = imcb_new( acc );
99	struct jabber_data *jd = g_new0( struct jabber_data, 1 );
100	char *s;
101
102	/* For now this is needed in the _connected() handlers if using
103	GLib event handling, to make sure we're not handling events
104	on dead connections. */
105	jabber_connections = g_slist_prepend( jabber_connections, ic );
106
107	jd->ic = ic;
108	ic->proto_data = jd;
109
110	jd->username = g_strdup( acc->user );
111	jd->server = strchr( jd->username, '@' );
112
113	jd->fd = jd->r_inpa = jd->w_inpa = -1;
114
115	if( jd->server == NULL )
116	{
117	imcb_error( ic, "Incomplete account name (format it like <username@jabberserver.name>)" );
118	imc_logout( ic, FALSE );
119	return;
120	}
121
122	/* So don't think of free()ing jd->server.. :-) */
123	*jd->server = 0;
124	jd->server ++;
125
126	if( ( s = strchr( jd->server, '/' ) ) )
127	{
128	*s = 0;
129	set_setstr( &acc->set, "resource", s + 1 );
130
131	/* Also remove the /resource from the original variable so we
132	won't have to do this again every time. */
133	s = strchr( acc->user, '/' );
134	*s = 0;
135	}
136
137	jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
138	jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
139
140	if( set_getbool( &acc->set, "oauth" ) )
141	{
142	/* For the first login with OAuth, we have to authenticate via the browser.
143	For subsequent logins, exchange the refresh token for a valid access
144	token (even though the last one maybe didn't expire yet). */
145	if( strncmp( acc->pass, "refresh_token=", 14 ) != 0 )
146	sasl_oauth2_init( ic );
147	else
148	sasl_oauth2_refresh( ic, acc->pass + 14 );
149	}
150	else
151	jabber_connect( ic );
152	}
153
154	/* Separate this from jabber_login() so we can do OAuth first if necessary.
155	Putting this in io.c would probably be more correct. */
156	void jabber_connect( struct im_connection *ic )
157	{
158	account_t *acc = ic->acc;
159	struct jabber_data *jd = ic->proto_data;
160	int i;
161	char *connect_to;
162	struct ns_srv_reply *srvl = NULL, srv = NULL;
163
164	/* Figure out the hostname to connect to. */
165	if( acc->server && *acc->server )
166	connect_to = acc->server;
167	else if( ( srvl = srv_lookup( "xmpp-client", "tcp", jd->server ) ) \|\|
168	( srvl = srv_lookup( "jabber-client", "tcp", jd->server ) ) )
169	{
170	/* Find the lowest-priority one. These usually come
171	back in random/shuffled order. Not looking at
172	weights etc for now. */
173	srv = *srvl;
174	for( i = 1; srvl[i]; i ++ )
175	if( srvl[i]->prio < srv->prio )
176	srv = srvl[i];
177
178	connect_to = srv->name;
179	}
180	else
181	connect_to = jd->server;
182
183	imcb_log( ic, "Connecting" );
184
185	for( i = 0; jabber_port_list[i] > 0; i ++ )
186	if( set_getint( &acc->set, "port" ) == jabber_port_list[i] )
187	break;
188
189	if( jabber_port_list[i] == 0 )
190	{
191	imcb_log( ic, "Illegal port number" );
192	imc_logout( ic, FALSE );
193	return;
194	}
195
196	/* For non-SSL connections we can try to use the port # from the SRV
197	reply, but let's not do that when using SSL, SSL usually runs on
198	non-standard ports... */
199	if( set_getbool( &acc->set, "ssl" ) )
200	{
201	jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), jabber_connected_ssl, ic );
202	jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1;
203	}
204	else
205	{
206	jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic );
207	}
208	srv_free( srvl );
209
210	if( jd->fd == -1 )
211	{
212	imcb_error( ic, "Could not connect to server" );
213	imc_logout( ic, TRUE );
214
215	return;
216	}
217
218	if( set_getbool( &acc->set, "xmlconsole" ) )
219	{
220	jd->flags \|= JFLAG_XMLCONSOLE;
221	/* Shouldn't really do this at this stage already, maybe. But
222	I think this shouldn't break anything. */
223	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
224	}
225
226	jabber_generate_id_hash( jd );
227	}
228
229	/* This generates an unfinished md5_state_t variable. Every time we generate
230	an ID, we finish the state by adding a sequence number and take the hash. */
231	static void jabber_generate_id_hash( struct jabber_data *jd )
232	{
233	md5_byte_t binbuf[4];
234	char *s;
235
236	md5_init( &jd->cached_id_prefix );
237	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->username, strlen( jd->username ) );
238	md5_append( &jd->cached_id_prefix, (unsigned char *) jd->server, strlen( jd->server ) );
239	s = set_getstr( &jd->ic->acc->set, "resource" );
240	md5_append( &jd->cached_id_prefix, (unsigned char *) s, strlen( s ) );
241	random_bytes( binbuf, 4 );
242	md5_append( &jd->cached_id_prefix, binbuf, 4 );
243	}
244
245	static void jabber_logout( struct im_connection *ic )
246	{
247	struct jabber_data *jd = ic->proto_data;
248
249	while( jd->filetransfers )
250	imcb_file_canceled( ic, ( ( struct jabber_transfer *) jd->filetransfers->data )->ft, "Logging out" );
251
252	while( jd->streamhosts )
253	{
254	jabber_streamhost_t *sh = jd->streamhosts->data;
255	jd->streamhosts = g_slist_remove( jd->streamhosts, sh );
256	g_free( sh->jid );
257	g_free( sh->host );
258	g_free( sh );
259	}
260
261	if( jd->fd >= 0 )
262	jabber_end_stream( ic );
263
264	while( ic->groupchats )
265	jabber_chat_free( ic->groupchats->data );
266
267	if( jd->r_inpa >= 0 )
268	b_event_remove( jd->r_inpa );
269	if( jd->w_inpa >= 0 )
270	b_event_remove( jd->w_inpa );
271
272	if( jd->ssl )
273	ssl_disconnect( jd->ssl );
274	if( jd->fd >= 0 )
275	closesocket( jd->fd );
276
277	if( jd->tx_len )
278	g_free( jd->txq );
279
280	if( jd->node_cache )
281	g_hash_table_destroy( jd->node_cache );
282
283	jabber_buddy_remove_all( ic );
284
285	xt_free( jd->xt );
286
287	g_free( jd->away_message );
288	g_free( jd->username );
289	g_free( jd );
290
291	jabber_connections = g_slist_remove( jabber_connections, ic );
292	}
293
294	static int jabber_buddy_msg( struct im_connection ic, char who, char *message, int flags )
295	{
296	struct jabber_data *jd = ic->proto_data;
297	struct jabber_buddy *bud;
298	struct xt_node *node;
299	char *s;
300	int st;
301
302	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
303	return jabber_write( ic, message, strlen( message ) );
304
305	if( g_strcasecmp( who, "jabber_oauth" ) == 0 )
306	{
307	if( sasl_oauth2_get_refresh_token( ic, message ) )
308	{
309	return 1;
310	}
311	else
312	{
313	imcb_error( ic, "OAuth failure" );
314	imc_logout( ic, TRUE );
315	}
316	}
317
318	if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
319	bud = jabber_buddy_by_ext_jid( ic, who, 0 );
320	else
321	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_BARE_OK );
322
323	node = xt_new_node( "body", message, NULL );
324	node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node );
325
326	if( bud && ( jd->flags & JFLAG_WANT_TYPING ) &&
327	( ( bud->flags & JBFLAG_DOES_XEP85 ) \|\|
328	!( bud->flags & JBFLAG_PROBED_XEP85 ) ) )
329	{
330	struct xt_node *act;
331
332	/* If the user likes typing notification and if we don't know
333	(and didn't probe before) if this resource supports XEP85,
334	include a probe in this packet now. Also, if we know this
335	buddy does support XEP85, we have to send this <active/>
336	tag to tell that the user stopped typing (well, that's what
337	we guess when s/he pressed Enter...). */
338	act = xt_new_node( "active", NULL, NULL );
339	xt_add_attr( act, "xmlns", XMLNS_CHATSTATES );
340	xt_add_child( node, act );
341
342	/* Just make sure we do this only once. */
343	bud->flags \|= JBFLAG_PROBED_XEP85;
344	}
345
346	st = jabber_write_packet( ic, node );
347	xt_free_node( node );
348
349	return st;
350	}
351
352	static GList jabber_away_states( struct im_connection ic )
353	{
354	static GList *l = NULL;
355	int i;
356
357	if( l == NULL )
358	for( i = 0; jabber_away_state_list[i].full_name; i ++ )
359	l = g_list_append( l, (void*) jabber_away_state_list[i].full_name );
360
361	return l;
362	}
363
364	static void jabber_get_info( struct im_connection ic, char who )
365	{
366	struct jabber_buddy *bud;
367
368	bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_FIRST );
369
370	while( bud )
371	{
372	imcb_log( ic, "Buddy %s (%d) information:", bud->full_jid, bud->priority );
373	if( bud->away_state )
374	imcb_log( ic, "Away state: %s", bud->away_state->full_name );
375	imcb_log( ic, "Status message: %s", bud->away_message ? bud->away_message : "(none)" );
376
377	bud = bud->next;
378	}
379
380	jabber_get_vcard( ic, bud ? bud->full_jid : who );
381	}
382
383	static void jabber_set_away( struct im_connection ic, char state_txt, char *message )
384	{
385	struct jabber_data *jd = ic->proto_data;
386
387	/* state_txt == NULL -> Not away.
388	Unknown state -> fall back to the first defined away state. */
389	if( state_txt == NULL )
390	jd->away_state = NULL;
391	else if( ( jd->away_state = jabber_away_state_by_name( state_txt ) ) == NULL )
392	jd->away_state = jabber_away_state_list;
393
394	g_free( jd->away_message );
395	jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL;
396
397	presence_send_update( ic );
398	}
399
400	static void jabber_add_buddy( struct im_connection ic, char who, char *group )
401	{
402	struct jabber_data *jd = ic->proto_data;
403
404	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
405	{
406	jd->flags \|= JFLAG_XMLCONSOLE;
407	imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
408	return;
409	}
410
411	if( jabber_add_to_roster( ic, who, NULL, group ) )
412	presence_send_request( ic, who, "subscribe" );
413	}
414
415	static void jabber_remove_buddy( struct im_connection ic, char who, char *group )
416	{
417	struct jabber_data *jd = ic->proto_data;
418
419	if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
420	{
421	jd->flags &= ~JFLAG_XMLCONSOLE;
422	/* Not necessary for now. And for now the code isn't too
423	happy if the buddy is completely gone right after calling
424	this function already.
425	imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL );
426	*/
427	return;
428	}
429
430	/* We should always do this part. Clean up our administration a little bit. */
431	jabber_buddy_remove_bare( ic, who );
432
433	if( jabber_remove_from_roster( ic, who ) )
434	presence_send_request( ic, who, "unsubscribe" );
435	}
436
437	static struct groupchat jabber_chat_join_( struct im_connection ic, const char room, const char nick, const char password, set_t *sets )
438	{
439	if( strchr( room, '@' ) == NULL )
440	imcb_error( ic, "Invalid room name: %s", room );
441	else if( jabber_chat_by_jid( ic, room ) )
442	imcb_error( ic, "Already present in chat `%s'", room );
443	else
444	return jabber_chat_join( ic, room, nick, set_getstr( sets, "password" ) );
445
446	return NULL;
447	}
448
449	static void jabber_chat_msg_( struct groupchat c, char message, int flags )
450	{
451	if( c && message )
452	jabber_chat_msg( c, message, flags );
453	}
454
455	static void jabber_chat_topic_( struct groupchat c, char topic )
456	{
457	if( c && topic )
458	jabber_chat_topic( c, topic );
459	}
460
461	static void jabber_chat_leave_( struct groupchat *c )
462	{
463	if( c )
464	jabber_chat_leave( c, NULL );
465	}
466
467	static void jabber_chat_invite_( struct groupchat c, char who, char *msg )
468	{
469	struct jabber_chat *jc = c->data;
470	gchar *msg_alt = NULL;
471
472	if( msg == NULL )
473	msg_alt = g_strdup_printf( "%s invited you to %s", c->ic->acc->user, jc->name );
474
475	if( c && who )
476	jabber_chat_invite( c, who, msg ? msg : msg_alt );
477
478	g_free( msg_alt );
479	}
480
481	static void jabber_keepalive( struct im_connection *ic )
482	{
483	/* Just any whitespace character is enough as a keepalive for XMPP sessions. */
484	if( !jabber_write( ic, "\n", 1 ) )
485	return;
486
487	/* This runs the garbage collection every minute, which means every packet
488	is in the cache for about a minute (which should be enough AFAIK). */
489	jabber_cache_clean( ic );
490	}
491
492	static int jabber_send_typing( struct im_connection ic, char who, int typing )
493	{
494	struct jabber_data *jd = ic->proto_data;
495	struct jabber_buddy *bud;
496
497	/* Enable typing notification related code from now. */
498	jd->flags \|= JFLAG_WANT_TYPING;
499
500	if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL )
501	{
502	/* Sending typing notifications to unknown buddies is
503	unsupported for now. Shouldn't be a problem, I think. */
504	return 0;
505	}
506
507	if( bud->flags & JBFLAG_DOES_XEP85 )
508	{
509	/* We're only allowed to send this stuff if we know the other
510	side supports it. */
511
512	struct xt_node *node;
513	char *type;
514	int st;
515
516	if( typing & OPT_TYPING )
517	type = "composing";
518	else if( typing & OPT_THINKING )
519	type = "paused";
520	else
521	type = "active";
522
523	node = xt_new_node( type, NULL, NULL );
524	xt_add_attr( node, "xmlns", XMLNS_CHATSTATES );
525	node = jabber_make_packet( "message", "chat", bud->full_jid, node );
526
527	st = jabber_write_packet( ic, node );
528	xt_free_node( node );
529
530	return st;
531	}
532
533	return 1;
534	}
535
536	void jabber_chat_add_settings( account_t acc, set_t *head )
537	{
538	/* Meh. Stupid room passwords. Not trying to obfuscate/hide
539	them from the user for now. */
540	set_add( head, "password", NULL, NULL, NULL );
541	}
542
543	void jabber_chat_free_settings( account_t acc, set_t *head )
544	{
545	set_del( head, "password" );
546	}
547
548	GList jabber_buddy_action_list( bee_user_t bu )
549	{
550	static GList *ret = NULL;
551
552	if( ret == NULL )
553	{
554	static const struct buddy_action ba[2] = {
555	{ "VERSION", "Get client (version) information" },
556	};
557
558	ret = g_list_prepend( ret, (void*) ba + 0 );
559	}
560
561	return ret;
562	}
563
564	void jabber_buddy_action( struct bee_user bu, const char action, char const args[], void *data )
565	{
566	if( g_strcasecmp( action, "VERSION" ) == 0 )
567	{
568	struct jabber_buddy *bud;
569
570	if( ( bud = jabber_buddy_by_ext_jid( bu->ic, bu->handle, 0 ) ) == NULL )
571	bud = jabber_buddy_by_jid( bu->ic, bu->handle, GET_BUDDY_FIRST );
572	for( ; bud; bud = bud->next )
573	jabber_iq_version_send( bu->ic, bud, data );
574	}
575
576	return NULL;
577	}
578
579	void jabber_initmodule()
580	{
581	struct prpl *ret = g_new0( struct prpl, 1 );
582
583	ret->name = "jabber";
584	ret->mms = 0; /* no limit */
585	ret->login = jabber_login;
586	ret->init = jabber_init;
587	ret->logout = jabber_logout;
588	ret->buddy_msg = jabber_buddy_msg;
589	ret->away_states = jabber_away_states;
590	ret->set_away = jabber_set_away;
591	// ret->set_info = jabber_set_info;
592	ret->get_info = jabber_get_info;
593	ret->add_buddy = jabber_add_buddy;
594	ret->remove_buddy = jabber_remove_buddy;
595	ret->chat_msg = jabber_chat_msg_;
596	ret->chat_topic = jabber_chat_topic_;
597	ret->chat_invite = jabber_chat_invite_;
598	ret->chat_leave = jabber_chat_leave_;
599	ret->chat_join = jabber_chat_join_;
600	ret->chat_add_settings = jabber_chat_add_settings;
601	ret->chat_free_settings = jabber_chat_free_settings;
602	ret->keepalive = jabber_keepalive;
603	ret->send_typing = jabber_send_typing;
604	ret->handle_cmp = g_strcasecmp;
605	ret->transfer_request = jabber_si_transfer_request;
606	ret->buddy_action_list = jabber_buddy_action_list;
607	ret->buddy_action = jabber_buddy_action;
608
609	register_protocol( ret );
610	}

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