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source: protocols/jabber/presence.c @ 3c80a9d

Last change on this file since 3c80a9d was dded27d, checked in by Wilmer van der Gaast <wilmer@…>, at 2008-01-13T14:48:32Z
Fixed "Conditional jump or move depends on uninitialised value(s)" at jabber_pkt_presence (presence.c:174). Valgrind-Wilmer: 1-0.
Property mode set to `100644`
File size: 7.4 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;
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	if( set_getbool( &ic->irc->set, "debug" ) )
52	imcb_log( ic, "Warning: Could not handle presence information from JID: %s", from );
53	return XT_HANDLED;
54	}
55
56	g_free( bud->away_message );
57	if( ( c = xt_find_node( node->children, "status" ) ) && c->text_len > 0 )
58	bud->away_message = g_strdup( c->text );
59	else
60	bud->away_message = NULL;
61
62	if( ( c = xt_find_node( node->children, "show" ) ) && c->text_len > 0 )
63	{
64	bud->away_state = (void*) jabber_away_state_by_code( c->text );
65	}
66	else
67	{
68	bud->away_state = NULL;
69	/* Let's only set last_act if there's no away state,
70	since it could be some auto-away thingy. */
71	bud->last_act = time( NULL );
72	}
73
74	if( ( c = xt_find_node( node->children, "priority" ) ) && c->text_len > 0 )
75	bud->priority = atoi( c->text );
76	else
77	bud->priority = 0;
78
79	if( is_chat )
80	jabber_chat_pkt_presence( ic, bud, node );
81	else
82	send_presence = jabber_buddy_by_jid( ic, bud->bare_jid, 0 );
83	}
84	else if( strcmp( type, "unavailable" ) == 0 )
85	{
86	if( ( bud = jabber_buddy_by_jid( ic, from, 0 ) ) == NULL )
87	{
88	if( set_getbool( &ic->irc->set, "debug" ) )
89	imcb_log( ic, "Warning: Received presence information from unknown JID: %s", from );
90	return XT_HANDLED;
91	}
92
93	/* Handle this before we delete the JID. */
94	if( is_chat )
95	{
96	jabber_chat_pkt_presence( ic, bud, node );
97	}
98
99	if( strchr( from, '/' ) == NULL )
100	/* Sometimes servers send a type="unavailable" from a
101	bare JID, which should mean that suddenly all
102	resources for this JID disappeared. */
103	jabber_buddy_remove_bare( ic, from );
104	else
105	jabber_buddy_remove( ic, from );
106
107	if( is_chat )
108	{
109	/* Nothing else to do for now? */
110	}
111	else if( ( s = strchr( from, '/' ) ) )
112	{
113	*s = 0;
114
115	/* If another resource is still available, send its presence
116	information. */
117	if( ( send_presence = jabber_buddy_by_jid( ic, from, 0 ) ) == NULL )
118	{
119	/* Otherwise, count him/her as offline now. */
120	imcb_buddy_status( ic, from, 0, NULL, NULL );
121	}
122
123	*s = '/';
124	}
125	else
126	{
127	imcb_buddy_status( ic, from, 0, NULL, NULL );
128	}
129	}
130	else if( strcmp( type, "subscribe" ) == 0 )
131	{
132	jabber_buddy_ask( ic, from );
133	}
134	else if( strcmp( type, "subscribed" ) == 0 )
135	{
136	/* Not sure about this one, actually... */
137	imcb_log( ic, "%s just accepted your authorization request", from );
138	}
139	else if( strcmp( type, "unsubscribe" ) == 0 \|\| strcmp( type, "unsubscribed" ) == 0 )
140	{
141	/* Do nothing here. Plenty of control freaks or over-curious
142	souls get excited when they can see who still has them in
143	their buddy list and who finally removed them. Somehow I
144	got the impression that those are the people who get
145	removed from many buddy lists for "some" reason...
146
147	If you're one of those people, this is your chance to write
148	your first line of code in C... */
149	}
150	else if( strcmp( type, "error" ) == 0 )
151	{
152	return jabber_cache_handle_packet( ic, node );
153
154	/*
155	struct jabber_error *err;
156	if( ( c = xt_find_node( node->children, "error" ) ) )
157	{
158	err = jabber_error_parse( c, XMLNS_STANZA_ERROR );
159	imcb_error( ic, "Stanza (%s) error: %s%s%s", node->name,
160	err->code, err->text ? ": " : "",
161	err->text ? err->text : "" );
162	jabber_error_free( err );
163	} */
164	}
165
166	if( send_presence )
167	{
168	int is_away = 0;
169
170	if( send_presence->away_state && !( *send_presence->away_state->code == 0 \|\|
171	strcmp( send_presence->away_state->code, "chat" ) == 0 ) )
172	is_away = OPT_AWAY;
173
174	imcb_buddy_status( ic, send_presence->bare_jid, OPT_LOGGED_IN \| is_away,
175	( is_away && send_presence->away_state ) ?
176	send_presence->away_state->full_name : NULL,
177	send_presence->away_message );
178	}
179
180	return XT_HANDLED;
181	}
182
183	/* Whenever presence information is updated, call this function to inform the
184	server. */
185	int presence_send_update( struct im_connection *ic )
186	{
187	struct jabber_data *jd = ic->proto_data;
188	struct xt_node *node;
189	char *show = jd->away_state->code;
190	char *status = jd->away_message;
191	struct groupchat *c;
192	int st;
193
194	node = jabber_make_packet( "presence", NULL, NULL, NULL );
195	xt_add_child( node, xt_new_node( "priority", set_getstr( &ic->acc->set, "priority" ), NULL ) );
196	if( show && *show )
197	xt_add_child( node, xt_new_node( "show", show, NULL ) );
198	if( status )
199	xt_add_child( node, xt_new_node( "status", status, NULL ) );
200
201	st = jabber_write_packet( ic, node );
202
203	/* Have to send this update to all groupchats too, the server won't
204	do this automatically. */
205	for( c = ic->groupchats; c && st; c = c->next )
206	{
207	struct jabber_chat *jc = c->data;
208
209	xt_add_attr( node, "to", jc->my_full_jid );
210	st = jabber_write_packet( ic, node );
211	}
212
213	xt_free_node( node );
214	return st;
215	}
216
217	/* Send a subscribe/unsubscribe request to a buddy. */
218	int presence_send_request( struct im_connection ic, char handle, char *request )
219	{
220	struct xt_node *node;
221	int st;
222
223	node = jabber_make_packet( "presence", NULL, NULL, NULL );
224	xt_add_attr( node, "to", handle );
225	xt_add_attr( node, "type", request );
226
227	st = jabber_write_packet( ic, node );
228
229	xt_free_node( node );
230	return st;
231	}

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