pidgin/pidgin

Fix a crash on shutdown in kwallet if the wallet was never opened.

2021-03-23, Gary Kramlich
a6a5e36ddfe5
Fix a crash on shutdown in kwallet if the wallet was never opened.

The wallet instance variable was not initialized so if the wallet was never opened we were trying to delete and invalid pointer.

Also update the dispose method of the provider to close the wallet as the
tasks in the queue hold a reference to the provider instance as the source
object in their tasks.

Testing Done:
Ran locally with both the kwallet and secret service providers.

Reviewed at https://reviews.imfreedom.org/r/581/
/*
* pidgin
*
* Pidgin 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 "pidginpluginsmenu.h"
#include <gplugin.h>
#include <purple.h>
struct _PidginPluginsMenu {
GtkMenu parent;
GtkWidget *separator;
GSimpleActionGroup *action_group;
GHashTable *plugin_items;
};
#define PIDGIN_PLUGINS_MENU_ACTION_PREFIX "plugins-menu"
/******************************************************************************
* Helpers
*****************************************************************************/
static void
pidgin_plugins_menu_action_activated(GSimpleAction *simple, GVariant *parameter,
gpointer data)
{
PurplePluginAction *action = (PurplePluginAction *)data;
if(action != NULL && action->callback != NULL) {
action->callback(action);
}
}
static void
pidgin_plugins_menu_add_plugin_actions(PidginPluginsMenu *menu,
PurplePlugin *plugin)
{
GPluginPluginInfo *info = NULL;
PurplePluginActionsCb actions_cb = NULL;
GList *actions = NULL;
GtkWidget *submenu = NULL, *item = NULL;
gint i = 0;
info = gplugin_plugin_get_info(GPLUGIN_PLUGIN(plugin));
actions_cb = purple_plugin_info_get_actions_cb(PURPLE_PLUGIN_INFO(info));
if(actions_cb == NULL) {
g_object_unref(G_OBJECT(info));
return;
}
actions = actions_cb(plugin);
if(actions == NULL) {
g_object_unref(G_OBJECT(info));
return;
}
submenu = gtk_menu_new();
for(i = 0; actions != NULL; i++) {
PurplePluginAction *action = (PurplePluginAction *)actions->data;
GSimpleAction *gaction = NULL;
GtkWidget *action_item = NULL;
gchar *action_base_name = NULL;
gchar *action_full_name = NULL;
if(action->label == NULL) {
continue;
}
action_base_name = g_strdup_printf("%s-%d",
gplugin_plugin_info_get_id(info),
i);
action_full_name = g_strdup_printf("%s.%s",
PIDGIN_PLUGINS_MENU_ACTION_PREFIX,
action_base_name);
/* create the menu item with the full action name */
action_item = gtk_menu_item_new_with_label(action->label);
gtk_actionable_set_action_name(GTK_ACTIONABLE(action_item),
action_full_name);
gtk_widget_show(action_item);
g_free(action_full_name);
/* add our action item to the menu */
gtk_menu_shell_append(GTK_MENU_SHELL(submenu), action_item);
/* now create the gaction with the base name */
gaction = g_simple_action_new(action_base_name, NULL);
g_free(action_base_name);
/* now connect to the activate signal of the action using
* g_signal_connect_data with a destroy notify to free the plugin action
* when the signal handler is removed.
*/
g_signal_connect_data(G_OBJECT(gaction), "activate",
G_CALLBACK(pidgin_plugins_menu_action_activated),
action,
(GClosureNotify)purple_plugin_action_free,
0);
/* finally add the action to the action group and remove our ref */
g_action_map_add_action(G_ACTION_MAP(menu->action_group),
G_ACTION(gaction));
g_object_unref(G_OBJECT(gaction));
actions = g_list_delete_link(actions, actions);
}
item = gtk_menu_item_new_with_label(gplugin_plugin_info_get_name(info));
gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
gtk_widget_show(item);
gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
g_hash_table_insert(menu->plugin_items,
g_object_ref(G_OBJECT(plugin)),
item);
g_object_unref(G_OBJECT(info));
/* make sure that our separator is visible */
gtk_widget_show(menu->separator);
}
static void
pidgin_plugins_menu_remove_plugin_actions(PidginPluginsMenu *menu,
PurplePlugin *plugin)
{
GPluginPluginInfo *info = NULL;
PurplePluginActionsCb actions_cb = NULL;
GList *actions = NULL;
gint i = 0;
/* try remove the menu item from plugin from the hash table. If we didn't
* remove anything, we have nothing to do so bail.
*/
if(!g_hash_table_remove(menu->plugin_items, plugin)) {
return;
}
info = gplugin_plugin_get_info(GPLUGIN_PLUGIN(plugin));
actions_cb = purple_plugin_info_get_actions_cb(PURPLE_PLUGIN_INFO(info));
if(actions_cb == NULL) {
g_object_unref(G_OBJECT(info));
return;
}
actions = actions_cb(plugin);
if(actions == NULL) {
g_object_unref(G_OBJECT(info));
return;
}
/* now walk through the actions and remove them from the action group. */
for(i = 0; actions != NULL; i++) {
gchar *name = NULL;
name = g_strdup_printf("%s-%d", gplugin_plugin_info_get_id(info), i);
g_action_map_remove_action(G_ACTION_MAP(menu->action_group), name);
g_free(name);
actions = g_list_delete_link(actions, actions);
}
g_object_unref(G_OBJECT(info));
/* finally, if this was the last item in the list, hide the separator. */
if(g_hash_table_size(menu->plugin_items) == 0) {
gtk_widget_hide(menu->separator);
}
}
/******************************************************************************
* Purple Signal Callbacks
*****************************************************************************/
static void
pidgin_plugins_menu_plugin_load_cb(PurplePlugin *plugin, gpointer data) {
pidgin_plugins_menu_add_plugin_actions(PIDGIN_PLUGINS_MENU(data), plugin);
}
static void
pidgin_plugins_menu_plugin_unload_cb(PurplePlugin *plugin, gpointer data) {
pidgin_plugins_menu_remove_plugin_actions(PIDGIN_PLUGINS_MENU(data),
plugin);
}
/******************************************************************************
* GObject Implementation
*****************************************************************************/
G_DEFINE_TYPE(PidginPluginsMenu, pidgin_plugins_menu, GTK_TYPE_MENU)
static void
pidgin_plugins_menu_init(PidginPluginsMenu *menu) {
gpointer handle;
/* initialize our template */
gtk_widget_init_template(GTK_WIDGET(menu));
/* create our internal action group and assign it to ourself */
menu->action_group = g_simple_action_group_new();
gtk_widget_insert_action_group(GTK_WIDGET(menu),
PIDGIN_PLUGINS_MENU_ACTION_PREFIX,
G_ACTION_GROUP(menu->action_group));
/* create our storage for the items */
menu->plugin_items = g_hash_table_new_full(g_direct_hash, g_direct_equal,
g_object_unref,
(GDestroyNotify)gtk_widget_destroy);
/* finally connect to the purple signals to stay up to date */
handle = purple_plugins_get_handle();
purple_signal_connect(handle, "plugin-load", menu,
PURPLE_CALLBACK(pidgin_plugins_menu_plugin_load_cb),
menu);
purple_signal_connect(handle, "plugin-unload", menu,
PURPLE_CALLBACK(pidgin_plugins_menu_plugin_unload_cb),
menu);
};
static void
pidgin_plugins_menu_finalize(GObject *obj) {
purple_signals_disconnect_by_handle(obj);
G_OBJECT_CLASS(pidgin_plugins_menu_parent_class)->finalize(obj);
}
static void
pidgin_plugins_menu_class_init(PidginPluginsMenuClass *klass) {
GObjectClass *obj_class = G_OBJECT_CLASS(klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(klass);
obj_class->finalize = pidgin_plugins_menu_finalize;
gtk_widget_class_set_template_from_resource(
widget_class,
"/im/pidgin/Pidgin/Plugins/menu.ui"
);
gtk_widget_class_bind_template_child(widget_class, PidginPluginsMenu,
separator);
}
/******************************************************************************
* Public API
*****************************************************************************/
GtkWidget *
pidgin_plugins_menu_new(void) {
return GTK_WIDGET(g_object_new(PIDGIN_TYPE_PLUGINS_MENU, NULL));
}