source: protocols/bee_chat.c @ 4e3df8a

Last change on this file since 4e3df8a was d6657ce, checked in by Wilmer van der Gaast <wilmer@…>, at 2010-09-05T23:30:40Z

Fix NULL pointer dereference when removing nicks from groupchats.

  • Property mode set to 100644
File size: 6.6 KB
Line 
1  /********************************************************************\
2  * BitlBee -- An IRC to other IM-networks gateway                     *
3  *                                                                    *
4  * Copyright 2002-2010 Wilmer van der Gaast and others                *
5  \********************************************************************/
6
7/* Stuff to handle rooms                                                */
8
9/*
10  This program is free software; you can redistribute it and/or modify
11  it under the terms of the GNU General Public License as published by
12  the Free Software Foundation; either version 2 of the License, or
13  (at your option) any later version.
14
15  This program is distributed in the hope that it will be useful,
16  but WITHOUT ANY WARRANTY; without even the implied warranty of
17  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  GNU General Public License for more details.
19
20  You should have received a copy of the GNU General Public License with
21  the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
22  if not, write to the Free Software Foundation, Inc., 59 Temple Place,
23  Suite 330, Boston, MA  02111-1307  USA
24*/
25
26#define BITLBEE_CORE
27#include "bitlbee.h"
28
29struct groupchat *imcb_chat_new( struct im_connection *ic, const char *handle )
30{
31        struct groupchat *c = g_new0( struct groupchat, 1 );
32        bee_t *bee = ic->bee;
33       
34        /* This one just creates the conversation structure, user won't see
35           anything yet until s/he is joined to the conversation. (This
36           allows you to add other already present participants first.) */
37       
38        ic->groupchats = g_slist_prepend( ic->groupchats, c );
39        c->ic = ic;
40        c->title = g_strdup( handle );
41        c->topic = g_strdup_printf( "BitlBee groupchat: \"%s\". Please keep in mind that root-commands won't work here. Have fun!", c->title );
42       
43        if( set_getbool( &ic->bee->set, "debug" ) )
44                imcb_log( ic, "Creating new conversation: (id=%p,handle=%s)", c, handle );
45       
46        if( bee->ui->chat_new )
47                bee->ui->chat_new( bee, c );
48       
49        return c;
50}
51
52void imcb_chat_name_hint( struct groupchat *c, const char *name )
53{
54        bee_t *bee = c->ic->bee;
55       
56        if( bee->ui->chat_name_hint )
57                bee->ui->chat_name_hint( bee, c, name );
58}
59
60void imcb_chat_free( struct groupchat *c )
61{
62        struct im_connection *ic = c->ic;
63        bee_t *bee = ic->bee;
64        GList *ir;
65       
66        if( bee->ui->chat_free )
67                bee->ui->chat_free( bee, c );
68       
69        if( set_getbool( &ic->bee->set, "debug" ) )
70                imcb_log( ic, "You were removed from conversation %p", c );
71       
72        ic->groupchats = g_slist_remove( ic->groupchats, c );
73       
74        for( ir = c->in_room; ir; ir = ir->next )
75                g_free( ir->data );
76        g_list_free( c->in_room );
77        g_free( c->title );
78        g_free( c->topic );
79        g_free( c );
80}
81
82void imcb_chat_msg( struct groupchat *c, const char *who, char *msg, uint32_t flags, time_t sent_at )
83{
84        struct im_connection *ic = c->ic;
85        bee_t *bee = ic->bee;
86        bee_user_t *bu;
87        char *s;
88       
89        /* Gaim sends own messages through this too. IRC doesn't want this, so kill them */
90        if( g_strcasecmp( who, ic->acc->user ) == 0 )
91                return;
92       
93        bu = bee_user_by_handle( bee, ic, who );
94       
95        s = set_getstr( &ic->bee->set, "strip_html" );
96        if( ( g_strcasecmp( s, "always" ) == 0 ) ||
97            ( ( ic->flags & OPT_DOES_HTML ) && s ) )
98                strip_html( msg );
99       
100        if( bu && bee->ui->chat_msg )
101                bee->ui->chat_msg( bee, c, bu, msg, sent_at );
102        else
103                imcb_chat_log( c, "Message from unknown participant %s: %s", who, msg );
104}
105
106void imcb_chat_log( struct groupchat *c, char *format, ... )
107{
108        struct im_connection *ic = c->ic;
109        bee_t *bee = ic->bee;
110        va_list params;
111        char *text;
112       
113        if( !bee->ui->chat_log )
114                return;
115       
116        va_start( params, format );
117        text = g_strdup_vprintf( format, params );
118        va_end( params );
119       
120        bee->ui->chat_log( bee, c, text );
121        g_free( text );
122}
123
124void imcb_chat_topic( struct groupchat *c, char *who, char *topic, time_t set_at )
125{
126        struct im_connection *ic = c->ic;
127        bee_t *bee = ic->bee;
128        bee_user_t *bu;
129       
130        if( !bee->ui->chat_topic )
131                return;
132       
133        if( who == NULL)
134                bu = NULL;
135        else if( g_strcasecmp( who, ic->acc->user ) == 0 )
136                bu = bee->user;
137        else
138                bu = bee_user_by_handle( bee, ic, who );
139       
140        if( ( g_strcasecmp( set_getstr( &ic->bee->set, "strip_html" ), "always" ) == 0 ) ||
141            ( ( ic->flags & OPT_DOES_HTML ) && set_getbool( &ic->bee->set, "strip_html" ) ) )
142                strip_html( topic );
143       
144        bee->ui->chat_topic( bee, c, topic, bu );
145}
146
147void imcb_chat_add_buddy( struct groupchat *c, const char *handle )
148{
149        struct im_connection *ic = c->ic;
150        bee_t *bee = ic->bee;
151        bee_user_t *bu = bee_user_by_handle( bee, ic, handle );
152        gboolean me;
153       
154        if( set_getbool( &c->ic->bee->set, "debug" ) )
155                imcb_log( c->ic, "User %s added to conversation %p", handle, c );
156       
157        me = ic->acc->prpl->handle_cmp( handle, ic->acc->user ) == 0;
158       
159        /* Most protocols allow people to join, even when they're not in
160           your contact list. Try to handle that here */
161        if( !me && !bu )
162                bu = bee_user_new( bee, ic, handle, BEE_USER_LOCAL );
163       
164        /* Add the handle to the room userlist */
165        /* TODO: Use bu instead of a string */
166        c->in_room = g_list_append( c->in_room, g_strdup( handle ) );
167       
168        if( bee->ui->chat_add_user )
169                bee->ui->chat_add_user( bee, c, me ? bee->user : bu );
170       
171        if( me )
172                c->joined = 1;
173}
174
175void imcb_chat_remove_buddy( struct groupchat *c, const char *handle, const char *reason )
176{
177        struct im_connection *ic = c->ic;
178        bee_t *bee = ic->bee;
179        bee_user_t *bu = NULL;
180       
181        if( set_getbool( &bee->set, "debug" ) )
182                imcb_log( ic, "User %s removed from conversation %p (%s)", handle, c, reason ? reason : "" );
183       
184        /* It might be yourself! */
185        if( g_strcasecmp( handle, ic->acc->user ) == 0 )
186        {
187                if( c->joined == 0 )
188                        return;
189               
190                bu = bee->user;
191                c->joined = 0;
192        }
193        else
194        {
195                bu = bee_user_by_handle( bee, ic, handle );
196        }
197       
198        if( bee->ui->chat_remove_user && bu )
199                bee->ui->chat_remove_user( bee, c, bu );
200}
201
202int bee_chat_msg( bee_t *bee, struct groupchat *c, const char *msg, int flags )
203{
204        struct im_connection *ic = c->ic;
205        char *buf = NULL;
206       
207        if( ( ic->flags & OPT_DOES_HTML ) && ( g_strncasecmp( msg, "<html>", 6 ) != 0 ) )
208        {
209                buf = escape_html( msg );
210                msg = buf;
211        }
212        else
213                buf = g_strdup( msg );
214       
215        ic->acc->prpl->chat_msg( c, buf, flags );
216        g_free( buf );
217       
218        return 1;
219}
220
221struct groupchat *bee_chat_by_title( bee_t *bee, struct im_connection *ic, const char *title )
222{
223        struct groupchat *c;
224        GSList *l;
225       
226        for( l = ic->groupchats; l; l = l->next )
227        {
228                c = l->data;
229                if( strcmp( c->title, title ) == 0 )
230                        return c;
231        }
232       
233        return NULL;
234}
235
236void imcb_chat_invite( struct im_connection *ic, const char *name, const char *who, const char *msg )
237{
238        bee_user_t *bu = bee_user_by_handle( ic->bee, ic, who );
239       
240        if( bu && ic->bee->ui->chat_invite )
241                ic->bee->ui->chat_invite( ic->bee, bu, name, msg );
242}
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