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source: protocols/jabber/presence.c @ 63770b4

Last change on this file since 63770b4 was 840bba8, checked in by Wilmer van der Gaast <wilmer@…>, at 2010-03-06T14:50:52Z
The Jabber part of the change. Also made representation of not-away a bit more consistent. Except for free-for-chat, which is nuts anyway.
Property mode set to `100644`
File size: 8.5 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	/* Let's only set last_act if there's no away state,
71	since it could be some auto-away thingy. */
72	bud->last_act = time( NULL );
73	}
74
75	if( ( c = xt_find_node( node->children, "priority" ) ) && c->text_len > 0 )
76	bud->priority = atoi( c->text );
77	else
78	bud->priority = 0;
79
80	if( bud && ( cap = xt_find_node( node->children, "c" ) ) &&
81	( s = xt_find_attr( cap, "xmlns" ) ) && strcmp( s, XMLNS_CAPS ) == 0 )
82	{
83	/* This <presence> stanza includes an XEP-0115
84	capabilities part. Not too interesting, but we can
85	see if it has an ext= attribute. */
86	s = xt_find_attr( cap, "ext" );
87	if( s && ( strstr( s, "cstates" ) \|\| strstr( s, "chatstate" ) ) )
88	bud->flags \|= JBFLAG_DOES_XEP85;
89
90	/* This field can contain more information like xhtml
91	support, but we don't support that ourselves.
92	Officially the ext= tag was deprecated, but enough
93	clients do send it.
94
95	(I'm aware that this is not the right way to use
96	this field.) See for an explanation of ext=:
97	http://www.xmpp.org/extensions/attic/xep-0115-1.3.html*/
98	}
99
100	if( is_chat )
101	jabber_chat_pkt_presence( ic, bud, node );
102	else
103	send_presence = jabber_buddy_by_jid( ic, bud->bare_jid, 0 );
104	}
105	else if( strcmp( type, "unavailable" ) == 0 )
106	{
107	if( ( bud = jabber_buddy_by_jid( ic, from, 0 ) ) == NULL )
108	{
109	/*
110	imcb_log( ic, "Warning: Received presence information from unknown JID: %s", from );
111	*/
112	return XT_HANDLED;
113	}
114
115	/* Handle this before we delete the JID. */
116	if( is_chat )
117	{
118	jabber_chat_pkt_presence( ic, bud, node );
119	}
120
121	if( strchr( from, '/' ) == NULL )
122	/* Sometimes servers send a type="unavailable" from a
123	bare JID, which should mean that suddenly all
124	resources for this JID disappeared. */
125	jabber_buddy_remove_bare( ic, from );
126	else
127	jabber_buddy_remove( ic, from );
128
129	if( is_chat )
130	{
131	/* Nothing else to do for now? */
132	}
133	else if( ( s = strchr( from, '/' ) ) )
134	{
135	*s = 0;
136
137	/* If another resource is still available, send its presence
138	information. */
139	if( ( send_presence = jabber_buddy_by_jid( ic, from, 0 ) ) == NULL )
140	{
141	/* Otherwise, count him/her as offline now. */
142	imcb_buddy_status( ic, from, 0, NULL, NULL );
143	}
144
145	*s = '/';
146	}
147	else
148	{
149	imcb_buddy_status( ic, from, 0, NULL, NULL );
150	}
151	}
152	else if( strcmp( type, "subscribe" ) == 0 )
153	{
154	jabber_buddy_ask( ic, from );
155	}
156	else if( strcmp( type, "subscribed" ) == 0 )
157	{
158	/* Not sure about this one, actually... */
159	imcb_log( ic, "%s just accepted your authorization request", from );
160	}
161	else if( strcmp( type, "unsubscribe" ) == 0 \|\| strcmp( type, "unsubscribed" ) == 0 )
162	{
163	/* Do nothing here. Plenty of control freaks or over-curious
164	souls get excited when they can see who still has them in
165	their buddy list and who finally removed them. Somehow I
166	got the impression that those are the people who get
167	removed from many buddy lists for "some" reason...
168
169	If you're one of those people, this is your chance to write
170	your first line of code in C... */
171	}
172	else if( strcmp( type, "error" ) == 0 )
173	{
174	return jabber_cache_handle_packet( ic, node );
175
176	/*
177	struct jabber_error *err;
178	if( ( c = xt_find_node( node->children, "error" ) ) )
179	{
180	err = jabber_error_parse( c, XMLNS_STANZA_ERROR );
181	imcb_error( ic, "Stanza (%s) error: %s%s%s", node->name,
182	err->code, err->text ? ": " : "",
183	err->text ? err->text : "" );
184	jabber_error_free( err );
185	} */
186	}
187
188	if( send_presence )
189	{
190	int is_away = 0;
191
192	if( send_presence->away_state &&
193	strcmp( send_presence->away_state->code, "chat" ) != 0 )
194	is_away = OPT_AWAY;
195
196	imcb_buddy_status( ic, send_presence->bare_jid, OPT_LOGGED_IN \| is_away,
197	is_away ? send_presence->away_state->full_name : NULL,
198	send_presence->away_message );
199	}
200
201	return XT_HANDLED;
202	}
203
204	/* Whenever presence information is updated, call this function to inform the
205	server. */
206	int presence_send_update( struct im_connection *ic )
207	{
208	struct jabber_data *jd = ic->proto_data;
209	struct xt_node node, cap;
210	struct groupchat *c;
211	int st;
212
213	node = jabber_make_packet( "presence", NULL, NULL, NULL );
214	xt_add_child( node, xt_new_node( "priority", set_getstr( &ic->acc->set, "priority" ), NULL ) );
215	if( jd->away_state )
216	xt_add_child( node, xt_new_node( "show", jd->away_state->code, NULL ) );
217	if( jd->away_message )
218	xt_add_child( node, xt_new_node( "status", jd->away_message, NULL ) );
219
220	/* This makes the packet slightly bigger, but clients interested in
221	capabilities can now cache the discovery info. This reduces the
222	usual post-login iq-flood. See XEP-0115. At least libpurple and
223	Trillian seem to do this right. */
224	cap = xt_new_node( "c", NULL, NULL );
225	xt_add_attr( cap, "xmlns", XMLNS_CAPS );
226	xt_add_attr( cap, "node", "http://bitlbee.org/xmpp/caps" );
227	xt_add_attr( cap, "ver", BITLBEE_VERSION ); /* The XEP wants this hashed, but nobody's doing that. */
228	xt_add_child( node, cap );
229
230	st = jabber_write_packet( ic, node );
231
232	/* Have to send this update to all groupchats too, the server won't
233	do this automatically. */
234	for( c = ic->groupchats; c && st; c = c->next )
235	{
236	struct jabber_chat *jc = c->data;
237
238	xt_add_attr( node, "to", jc->my_full_jid );
239	st = jabber_write_packet( ic, node );
240	}
241
242	xt_free_node( node );
243	return st;
244	}
245
246	/* Send a subscribe/unsubscribe request to a buddy. */
247	int presence_send_request( struct im_connection ic, char handle, char *request )
248	{
249	struct xt_node *node;
250	int st;
251
252	node = jabber_make_packet( "presence", NULL, NULL, NULL );
253	xt_add_attr( node, "to", handle );
254	xt_add_attr( node, "type", request );
255
256	st = jabber_write_packet( ic, node );
257
258	xt_free_node( node );
259	return st;
260	}

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