pidgin/pidgin

Prevent spoofing of iq replies by verifying that the 'from' address
release-2.x.y
2014-01-12, Mark Doliner
93d4bff19574
Prevent spoofing of iq replies by verifying that the 'from' address
matches the 'to' address of the iq request.

This full extent of this problem was realized by Thijs Alkemade, while
investigating a problem reported to us by Fabian Yamaguchi and Christian
Wressnegger of the University of Goettingen)

This change was created by Thijs Alkemade, with small shuffling and
variable renaming by me.
/*
* purple
*
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*
*/
#include "internal.h"
#include "blist.h"
#include "prefs.h"
#include "sound.h"
#include "sound-theme-loader.h"
#include "theme-manager.h"
static PurpleSoundUiOps *sound_ui_ops = NULL;
#define STATUS_AVAILABLE 1
#define STATUS_AWAY 2
static time_t last_played[PURPLE_NUM_SOUNDS];
static gboolean
purple_sound_play_required(const PurpleAccount *account)
{
gint pref_status = purple_prefs_get_int("/purple/sound/while_status");
if (pref_status == 3)
{
/* Play sounds: Always */
return TRUE;
}
if (account != NULL)
{
PurpleStatus *status = purple_account_get_active_status(account);
if (purple_status_is_online(status))
{
gboolean available = purple_status_is_available(status);
return (( available && pref_status == STATUS_AVAILABLE) ||
(!available && pref_status == STATUS_AWAY));
}
}
/* We get here a couple of ways. Either the request has been OK'ed
* by purple_sound_play_event() and we're here because the UI has
* called purple_sound_play_file(), or we're here for something
* not related to an account (like testing a sound). */
return TRUE;
}
void
purple_sound_play_file(const char *filename, const PurpleAccount *account)
{
if (!purple_sound_play_required(account))
return;
if(sound_ui_ops && sound_ui_ops->play_file)
sound_ui_ops->play_file(filename);
}
void
purple_sound_play_event(PurpleSoundEventID event, const PurpleAccount *account)
{
if (!purple_sound_play_required(account))
return;
if (time(NULL) - last_played[event] < 2)
return;
last_played[event] = time(NULL);
if(sound_ui_ops && sound_ui_ops->play_event) {
int plugin_return;
plugin_return = GPOINTER_TO_INT(purple_signal_emit_return_1(
purple_sounds_get_handle(), "playing-sound-event",
event, account));
if (plugin_return)
return;
else
sound_ui_ops->play_event(event);
}
}
void
purple_sound_set_ui_ops(PurpleSoundUiOps *ops)
{
if(sound_ui_ops && sound_ui_ops->uninit)
sound_ui_ops->uninit();
sound_ui_ops = ops;
if(sound_ui_ops && sound_ui_ops->init)
sound_ui_ops->init();
}
PurpleSoundUiOps *
purple_sound_get_ui_ops(void)
{
return sound_ui_ops;
}
void
purple_sound_init()
{
void *handle = purple_sounds_get_handle();
/**********************************************************************
* Register signals
**********************************************************************/
purple_signal_register(handle, "playing-sound-event",
purple_marshal_BOOLEAN__INT_POINTER,
purple_value_new(PURPLE_TYPE_BOOLEAN), 2,
purple_value_new(PURPLE_TYPE_INT),
purple_value_new(PURPLE_TYPE_SUBTYPE,
PURPLE_SUBTYPE_ACCOUNT));
purple_prefs_add_none("/purple/sound");
purple_prefs_add_int("/purple/sound/while_status", STATUS_AVAILABLE);
memset(last_played, 0, sizeof(last_played));
purple_theme_manager_register_type(g_object_new(PURPLE_TYPE_SOUND_THEME_LOADER, "type", "sound", NULL));
}
void
purple_sound_uninit()
{
if(sound_ui_ops && sound_ui_ops->uninit)
sound_ui_ops->uninit();
purple_signals_unregister_by_instance(purple_sounds_get_handle());
}
void *
purple_sounds_get_handle()
{
static int handle;
return &handle;
}