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source: protocols/jabber/presence.c @ d343eaa

Last change on this file since d343eaa was aea8b68, checked in by Wilmer van der Gaast <wilmer@…>, at 2010-05-06T00:28:56Z
Starting to restore chatroom stuff. Only enough to create and be joined into a room. More will follow soon.
Property mode set to `100644`
File size: 8.4 KB

Line
1	/***************************************************************************\
2	* *
3	* BitlBee - An IRC to IM gateway *
4	* Jabber module - Handling of presence (tags), etc *
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 "jabber.h"
25
26	xt_status jabber_pkt_presence( struct xt_node *node, gpointer data )
27	{
28	struct im_connection *ic = data;
29	char *from = xt_find_attr( node, "from" );
30	char type = xt_find_attr( node, "type" ); / NULL should mean the person is online. */
31	struct xt_node c, cap;
32	struct jabber_buddy bud, send_presence = NULL;
33	int is_chat = 0;
34	char *s;
35
36	if( !from )
37	return XT_HANDLED;
38
39	if( ( s = strchr( from, '/' ) ) )
40	{
41	*s = 0;
42	if( jabber_chat_by_jid( ic, from ) )
43	is_chat = 1;
44	*s = '/';
45	}
46
47	if( type == NULL )
48	{
49	if( !( bud = jabber_buddy_by_jid( ic, from, GET_BUDDY_EXACT \| GET_BUDDY_CREAT ) ) )
50	{
51	/*
52	imcb_log( ic, "Warning: Could not handle presence information from JID: %s", from );
53	*/
54	return XT_HANDLED;
55	}
56
57	g_free( bud->away_message );
58	if( ( c = xt_find_node( node->children, "status" ) ) && c->text_len > 0 )
59	bud->away_message = g_strdup( c->text );
60	else
61	bud->away_message = NULL;
62
63	if( ( c = xt_find_node( node->children, "show" ) ) && c->text_len > 0 )
64	{
65	bud->away_state = (void*) jabber_away_state_by_code( c->text );
66	}
67	else
68	{
69	bud->away_state = NULL;
70	}
71
72	if( ( c = xt_find_node( node->children, "priority" ) ) && c->text_len > 0 )
73	bud->priority = atoi( c->text );
74	else
75	bud->priority = 0;
76
77	if( bud && ( cap = xt_find_node( node->children, "c" ) ) &&
78	( s = xt_find_attr( cap, "xmlns" ) ) && strcmp( s, XMLNS_CAPS ) == 0 )
79	{
80	/* This <presence> stanza includes an XEP-0115
81	capabilities part. Not too interesting, but we can
82	see if it has an ext= attribute. */
83	s = xt_find_attr( cap, "ext" );
84	if( s && ( strstr( s, "cstates" ) \|\| strstr( s, "chatstate" ) ) )
85	bud->flags \|= JBFLAG_DOES_XEP85;
86
87	/* This field can contain more information like xhtml
88	support, but we don't support that ourselves.
89	Officially the ext= tag was deprecated, but enough
90	clients do send it.
91
92	(I'm aware that this is not the right way to use
93	this field.) See for an explanation of ext=:
94	http://www.xmpp.org/extensions/attic/xep-0115-1.3.html*/
95	}
96
97	if( is_chat )
98	jabber_chat_pkt_presence( ic, bud, node );
99	else
100	send_presence = jabber_buddy_by_jid( ic, bud->bare_jid, 0 );
101	}
102	else if( strcmp( type, "unavailable" ) == 0 )
103	{
104	if( ( bud = jabber_buddy_by_jid( ic, from, 0 ) ) == NULL )
105	{
106	/*
107	imcb_log( ic, "Warning: Received presence information from unknown JID: %s", from );
108	*/
109	return XT_HANDLED;
110	}
111
112	/* Handle this before we delete the JID. */
113	if( is_chat )
114	{
115	jabber_chat_pkt_presence( ic, bud, node );
116	}
117
118	if( strchr( from, '/' ) == NULL )
119	/* Sometimes servers send a type="unavailable" from a
120	bare JID, which should mean that suddenly all
121	resources for this JID disappeared. */
122	jabber_buddy_remove_bare( ic, from );
123	else
124	jabber_buddy_remove( ic, from );
125
126	if( is_chat )
127	{
128	/* Nothing else to do for now? */
129	}
130	else if( ( s = strchr( from, '/' ) ) )
131	{
132	*s = 0;
133
134	/* If another resource is still available, send its presence
135	information. */
136	if( ( send_presence = jabber_buddy_by_jid( ic, from, 0 ) ) == NULL )
137	{
138	/* Otherwise, count him/her as offline now. */
139	imcb_buddy_status( ic, from, 0, NULL, NULL );
140	}
141
142	*s = '/';
143	}
144	else
145	{
146	imcb_buddy_status( ic, from, 0, NULL, NULL );
147	}
148	}
149	else if( strcmp( type, "subscribe" ) == 0 )
150	{
151	jabber_buddy_ask( ic, from );
152	}
153	else if( strcmp( type, "subscribed" ) == 0 )
154	{
155	/* Not sure about this one, actually... */
156	imcb_log( ic, "%s just accepted your authorization request", from );
157	}
158	else if( strcmp( type, "unsubscribe" ) == 0 \|\| strcmp( type, "unsubscribed" ) == 0 )
159	{
160	/* Do nothing here. Plenty of control freaks or over-curious
161	souls get excited when they can see who still has them in
162	their buddy list and who finally removed them. Somehow I
163	got the impression that those are the people who get
164	removed from many buddy lists for "some" reason...
165
166	If you're one of those people, this is your chance to write
167	your first line of code in C... */
168	}
169	else if( strcmp( type, "error" ) == 0 )
170	{
171	return jabber_cache_handle_packet( ic, node );
172
173	/*
174	struct jabber_error *err;
175	if( ( c = xt_find_node( node->children, "error" ) ) )
176	{
177	err = jabber_error_parse( c, XMLNS_STANZA_ERROR );
178	imcb_error( ic, "Stanza (%s) error: %s%s%s", node->name,
179	err->code, err->text ? ": " : "",
180	err->text ? err->text : "" );
181	jabber_error_free( err );
182	} */
183	}
184
185	if( send_presence )
186	{
187	int is_away = 0;
188
189	if( send_presence->away_state &&
190	strcmp( send_presence->away_state->code, "chat" ) != 0 )
191	is_away = OPT_AWAY;
192
193	imcb_buddy_status( ic, send_presence->bare_jid, OPT_LOGGED_IN \| is_away,
194	is_away ? send_presence->away_state->full_name : NULL,
195	send_presence->away_message );
196	}
197
198	return XT_HANDLED;
199	}
200
201	/* Whenever presence information is updated, call this function to inform the
202	server. */
203	int presence_send_update( struct im_connection *ic )
204	{
205	struct jabber_data *jd = ic->proto_data;
206	struct xt_node node, cap;
207	struct groupchat *c;
208	GSList *l;
209	int st;
210
211	node = jabber_make_packet( "presence", NULL, NULL, NULL );
212	xt_add_child( node, xt_new_node( "priority", set_getstr( &ic->acc->set, "priority" ), NULL ) );
213	if( jd->away_state )
214	xt_add_child( node, xt_new_node( "show", jd->away_state->code, NULL ) );
215	if( jd->away_message )
216	xt_add_child( node, xt_new_node( "status", jd->away_message, NULL ) );
217
218	/* This makes the packet slightly bigger, but clients interested in
219	capabilities can now cache the discovery info. This reduces the
220	usual post-login iq-flood. See XEP-0115. At least libpurple and
221	Trillian seem to do this right. */
222	cap = xt_new_node( "c", NULL, NULL );
223	xt_add_attr( cap, "xmlns", XMLNS_CAPS );
224	xt_add_attr( cap, "node", "http://bitlbee.org/xmpp/caps" );
225	xt_add_attr( cap, "ver", BITLBEE_VERSION ); /* The XEP wants this hashed, but nobody's doing that. */
226	xt_add_child( node, cap );
227
228	st = jabber_write_packet( ic, node );
229
230	/* Have to send this update to all groupchats too, the server won't
231	do this automatically. */
232	for( l = ic->groupchats; l && st; l = l->next )
233	{
234	struct groupchat *c = l->data;
235	struct jabber_chat *jc = c->data;
236
237	xt_add_attr( node, "to", jc->my_full_jid );
238	st = jabber_write_packet( ic, node );
239	}
240
241	xt_free_node( node );
242	return st;
243	}
244
245	/* Send a subscribe/unsubscribe request to a buddy. */
246	int presence_send_request( struct im_connection ic, char handle, char *request )
247	{
248	struct xt_node *node;
249	int st;
250
251	node = jabber_make_packet( "presence", NULL, NULL, NULL );
252	xt_add_attr( node, "to", handle );
253	xt_add_attr( node, "type", request );
254
255	st = jabber_write_packet( ic, node );
256
257	xt_free_node( node );
258	return st;
259	}

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