Merge lp:~bbboson/ubuntu/precise/gnome-control-center/fix-for-1236612 into lp:ubuntu/precise-updates/gnome-control-center

[Madper Xie]

[Sebastien Bacher (seb128)]

Thanks, the vcs to use is lp:~ubuntu-desktop/gnome-control-center/precise (see debian/control), I've merged there and uploaded for you

review: Approve

[Sebastien Bacher (seb128)]

(could you make the bug SRU compliant, see https://wiki.ubuntu.com/StableReleaseUpdates)

=== modified file '.pc/applied-patches'
--- .pc/applied-patches	2014-04-02 10:52:39 +0000
+++ .pc/applied-patches	2014-07-07 05:56:11 +0000
@@ -44,3 +44,4 @@
 use_rfkill_airplane_mode.patch
 more-power-suspend-options.patch
 fix-input-device-bar-status.patch
+sound-fix-potential-memory-corruption.patch
 
=== added directory '.pc/sound-fix-potential-memory-corruption.patch'
=== added file '.pc/sound-fix-potential-memory-corruption.patch/.timestamp'
=== added directory '.pc/sound-fix-potential-memory-corruption.patch/panels'
=== added directory '.pc/sound-fix-potential-memory-corruption.patch/panels/sound'
=== added file '.pc/sound-fix-potential-memory-corruption.patch/panels/sound/gvc-sound-theme-chooser.c'
--- .pc/sound-fix-potential-memory-corruption.patch/panels/sound/gvc-sound-theme-chooser.c	1970-01-01 00:00:00 +0000
+++ .pc/sound-fix-potential-memory-corruption.patch/panels/sound/gvc-sound-theme-chooser.c	2014-07-07 05:56:11 +0000
@@ -0,0 +1,833 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Bastien Nocera <[e-mail]>
+ * Copyright (C) 2008 William Jon McCann
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <utime.h>
+#include <errno.h>
+
+#include <glib.h>
+#include <glib/gi18n-lib.h>
+#include <gtk/gtk.h>
+#include <canberra-gtk.h>
+#include <libxml/tree.h>
+
+#include <gsettings-desktop-schemas/gdesktop-enums.h>
+
+#include "gvc-sound-theme-chooser.h"
+#include "sound-theme-file-utils.h"
+
+#define GVC_SOUND_THEME_CHOOSER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GVC_TYPE_SOUND_THEME_CHOOSER, GvcSoundThemeChooserPrivate))
+
+struct GvcSoundThemeChooserPrivate
+{
+        GtkWidget *treeview;
+        GtkWidget *selection_box;
+        GSettings *settings;
+        GSettings *sound_settings;
+        char *current_theme;
+        char *current_parent;
+};
+
+static void     gvc_sound_theme_chooser_class_init (GvcSoundThemeChooserClass *klass);
+static void     gvc_sound_theme_chooser_init       (GvcSoundThemeChooser      *sound_theme_chooser);
+static void     gvc_sound_theme_chooser_finalize   (GObject            *object);
+
+G_DEFINE_TYPE (GvcSoundThemeChooser, gvc_sound_theme_chooser, GTK_TYPE_VBOX)
+
+#define KEY_SOUNDS_SCHEMA          "org.gnome.desktop.sound"
+#define EVENT_SOUNDS_KEY           "event-sounds"
+#define INPUT_SOUNDS_KEY           "input-feedback-sounds"
+#define SOUND_THEME_KEY            "theme-name"
+
+#define WM_SCHEMA                  "org.gnome.desktop.wm.preferences"
+#define AUDIO_BELL_KEY             "audible-bell"
+
+#define DEFAULT_ALERT_ID        "__default"
+#define CUSTOM_THEME_NAME       "__custom"
+#define NO_SOUNDS_THEME_NAME    "__no_sounds"
+#define DEFAULT_THEME           "ubuntu"
+
+enum {
+        THEME_DISPLAY_COL,
+        THEME_IDENTIFIER_COL,
+        THEME_PARENT_ID_COL,
+        THEME_NUM_COLS
+};
+
+enum {
+        ALERT_DISPLAY_COL,
+        ALERT_IDENTIFIER_COL,
+        ALERT_SOUND_TYPE_COL,
+        ALERT_NUM_COLS
+};
+
+enum {
+        SOUND_TYPE_UNSET,
+        SOUND_TYPE_OFF,
+        SOUND_TYPE_DEFAULT_FROM_THEME,
+        SOUND_TYPE_BUILTIN,
+        SOUND_TYPE_CUSTOM
+};
+
+#define GVC_SOUND_SOUND    (xmlChar *) "sound"
+#define GVC_SOUND_NAME     (xmlChar *) "name"
+#define GVC_SOUND_FILENAME (xmlChar *) "filename"
+
+/* Adapted from yelp-toc-pager.c */
+static xmlChar *
+xml_get_and_trim_names (xmlNodePtr node)
+{
+        xmlNodePtr cur;
+        xmlChar *keep_lang = NULL;
+        xmlChar *value;
+        int j, keep_pri = INT_MAX;
+
+        const gchar * const * langs = g_get_language_names ();
+
+        value = NULL;
+
+        for (cur = node->children; cur; cur = cur->next) {
+                if (! xmlStrcmp (cur->name, GVC_SOUND_NAME)) {
+                        xmlChar *cur_lang = NULL;
+                        int cur_pri = INT_MAX;
+
+                        cur_lang = xmlNodeGetLang (cur);
+
+                        if (cur_lang) {
+                                for (j = 0; langs[j]; j++) {
+                                        if (g_str_equal (cur_lang, langs[j])) {
+                                                cur_pri = j;
+                                                break;
+                                        }
+                                }
+                        } else {
+                                cur_pri = INT_MAX - 1;
+                        }
+
+                        if (cur_pri <= keep_pri) {
+                                if (keep_lang)
+                                        xmlFree (keep_lang);
+                                if (value)
+                                        xmlFree (value);
+
+                                value = xmlNodeGetContent (cur);
+
+                                keep_lang = cur_lang;
+                                keep_pri = cur_pri;
+                        } else {
+                                if (cur_lang)
+                                        xmlFree (cur_lang);
+                        }
+                }
+        }
+
+        /* Delete all GVC_SOUND_NAME nodes */
+        cur = node->children;
+        while (cur) {
+                xmlNodePtr this = cur;
+                cur = cur->next;
+                if (! xmlStrcmp (this->name, GVC_SOUND_NAME)) {
+                        xmlUnlinkNode (this);
+                        xmlFreeNode (this);
+                }
+        }
+
+        return value;
+}
+
+static void
+populate_model_from_node (GvcSoundThemeChooser *chooser,
+                          GtkTreeModel         *model,
+                          xmlNodePtr            node)
+{
+        xmlNodePtr child;
+        xmlChar   *filename;
+        xmlChar   *name;
+
+        filename = NULL;
+        name = xml_get_and_trim_names (node);
+        for (child = node->children; child; child = child->next) {
+                if (xmlNodeIsText (child)) {
+                        continue;
+                }
+
+                if (xmlStrcmp (child->name, GVC_SOUND_FILENAME) == 0) {
+                        filename = xmlNodeGetContent (child);
+                } else if (xmlStrcmp (child->name, GVC_SOUND_NAME) == 0) {
+                        /* EH? should have been trimmed */
+                }
+        }
+
+        if (filename != NULL && name != NULL) {
+                gtk_list_store_insert_with_values (GTK_LIST_STORE (model),
+                                                   NULL,
+                                                   G_MAXINT,
+                                                   ALERT_IDENTIFIER_COL, filename,
+                                                   ALERT_DISPLAY_COL, name,
+                                                   ALERT_SOUND_TYPE_COL, _("Built-in"),
+                                                   -1);
+        }
+
+        xmlFree (filename);
+        xmlFree (name);
+}
+
+static void
+populate_model_from_file (GvcSoundThemeChooser *chooser,
+                          GtkTreeModel         *model,
+                          const char           *filename)
+{
+        xmlDocPtr  doc;
+        xmlNodePtr root;
+        xmlNodePtr child;
+        gboolean   exists;
+
+        exists = g_file_test (filename, G_FILE_TEST_EXISTS);
+        if (! exists) {
+                return;
+        }
+
+        doc = xmlParseFile (filename);
+        if (doc == NULL) {
+                return;
+        }
+
+        root = xmlDocGetRootElement (doc);
+
+        for (child = root->children; child; child = child->next) {
+                if (xmlNodeIsText (child)) {
+                        continue;
+                }
+                if (xmlStrcmp (child->name, GVC_SOUND_SOUND) != 0) {
+                        continue;
+                }
+
+                populate_model_from_node (chooser, model, child);
+        }
+
+        xmlFreeDoc (doc);
+}
+
+static void
+populate_model_from_dir (GvcSoundThemeChooser *chooser,
+                         GtkTreeModel         *model,
+                         const char           *dirname)
+{
+        GDir       *d;
+        const char *name;
+
+        d = g_dir_open (dirname, 0, NULL);
+        if (d == NULL) {
+                return;
+        }
+
+        while ((name = g_dir_read_name (d)) != NULL) {
+                char *path;
+
+                if (! g_str_has_suffix (name, ".xml")) {
+                        continue;
+                }
+
+                path = g_build_filename (dirname, name, NULL);
+                populate_model_from_file (chooser, model, path);
+                g_free (path);
+        }
+}
+
+static gboolean
+save_alert_sounds (GvcSoundThemeChooser  *chooser,
+                   const char            *id)
+{
+        const char *sounds[3] = { "bell-terminal", "bell-window-system", NULL };
+        char *path;
+
+        if (strcmp (id, DEFAULT_ALERT_ID) == 0) {
+                delete_old_files (sounds);
+                delete_disabled_files (sounds);
+        } else {
+                delete_old_files (sounds);
+                delete_disabled_files (sounds);
+                add_custom_file (sounds, id);
+        }
+
+        /* And poke the directory so the theme gets updated */
+        path = custom_theme_dir_path (NULL);
+        if (utime (path, NULL) != 0) {
+                g_warning ("Failed to update mtime for directory '%s': %s",
+                           path, g_strerror (errno));
+        }
+        g_free (path);
+
+        return FALSE;
+}
+
+
+static void
+update_alert_model (GvcSoundThemeChooser  *chooser,
+                    const char            *id)
+{
+        GtkTreeModel *model;
+        GtkTreeIter   iter;
+
+        model = gtk_tree_view_get_model (GTK_TREE_VIEW (chooser->priv->treeview));
+        gtk_tree_model_get_iter_first (model, &iter);
+        do {
+                char    *this_id;
+
+                gtk_tree_model_get (model, &iter,
+                                    ALERT_IDENTIFIER_COL, &this_id,
+                                    -1);
+
+                if (strcmp (this_id, id) == 0) {
+                        GtkTreeSelection *selection;
+
+                        selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (chooser->priv->treeview));
+                        gtk_tree_selection_select_iter (selection, &iter);
+                }
+
+                g_free (this_id);
+        } while (gtk_tree_model_iter_next (model, &iter));
+}
+
+static void
+save_theme_name (GvcSoundThemeChooser *chooser,
+                 const char           *theme_name)
+{
+        /* If the name is empty, use "freedesktop" */
+        if (theme_name == NULL || *theme_name == '\0') {
+                theme_name = DEFAULT_THEME;
+        }
+
+        /* special case for no sounds */
+        if (strcmp (theme_name, NO_SOUNDS_THEME_NAME) == 0) {
+                g_settings_set_boolean (chooser->priv->sound_settings, EVENT_SOUNDS_KEY, FALSE);
+                return;
+        } else {
+                g_settings_set_boolean (chooser->priv->sound_settings, EVENT_SOUNDS_KEY, TRUE);
+        }
+
+        g_settings_set_string (chooser->priv->sound_settings, SOUND_THEME_KEY, theme_name);
+}
+
+static gboolean
+load_theme_file (const char *path,
+                 char      **parent)
+{
+        GKeyFile *file;
+        gboolean hidden;
+
+        file = g_key_file_new ();
+        if (g_key_file_load_from_file (file, path, G_KEY_FILE_KEEP_TRANSLATIONS, NULL) == FALSE) {
+                g_key_file_free (file);
+                return FALSE;
+        }
+        /* Don't add hidden themes to the list */
+        hidden = g_key_file_get_boolean (file, "Sound Theme", "Hidden", NULL);
+        if (!hidden) {
+                /* Save the parent theme, if there's one */
+                if (parent != NULL) {
+                        *parent = g_key_file_get_string (file,
+                                                         "Sound Theme",
+                                                         "Inherits",
+                                                         NULL);
+                }
+        }
+
+        g_key_file_free (file);
+
+        return TRUE;
+}
+
+static gboolean
+load_theme_name (const char *name,
+                 char      **parent)
+{
+        const char * const   *data_dirs;
+        const char           *data_dir;
+        char                 *path;
+        guint                 i;
+        gboolean              res;
+
+        data_dir = g_get_user_data_dir ();
+        path = g_build_filename (data_dir, "sounds", name, "index.theme", NULL);
+        res = load_theme_file (path, parent);
+        g_free (path);
+        if (res)
+                return TRUE;
+
+        data_dirs = g_get_system_data_dirs ();
+        for (i = 0; data_dirs[i] != NULL; i++) {
+                path = g_build_filename (data_dirs[i], "sounds", name, "index.theme", NULL);
+                res = load_theme_file (path, parent);
+                g_free (path);
+                if (res)
+                        return TRUE;
+        }
+
+        return FALSE;
+}
+
+static void
+update_alert (GvcSoundThemeChooser *chooser,
+              const char           *alert_id)
+{
+        gboolean      is_custom;
+        gboolean      is_default;
+        gboolean      add_custom;
+        gboolean      remove_custom;
+
+        is_custom = strcmp (chooser->priv->current_theme, CUSTOM_THEME_NAME) == 0;
+        is_default = strcmp (alert_id, DEFAULT_ALERT_ID) == 0;
+
+        /* So a few possibilities:
+         * 1. Named theme, default alert selected: noop
+         * 2. Named theme, alternate alert selected: create new custom with sound
+         * 3. Custom theme, default alert selected: remove sound and possibly custom
+         * 4. Custom theme, alternate alert selected: update custom sound
+         */
+        add_custom = FALSE;
+        remove_custom = FALSE;
+        if (! is_custom && is_default) {
+                /* remove custom just in case */
+                remove_custom = TRUE;
+        } else if (! is_custom && ! is_default) {
+                if (chooser->priv->current_parent)
+                        create_custom_theme (chooser->priv->current_parent);
+                else
+                        create_custom_theme (DEFAULT_THEME);
+                save_alert_sounds (chooser, alert_id);
+                add_custom = TRUE;
+        } else if (is_custom && is_default) {
+                save_alert_sounds (chooser, alert_id);
+                /* after removing files check if it is empty */
+                if (custom_theme_dir_is_empty ()) {
+                        remove_custom = TRUE;
+                }
+        } else if (is_custom && ! is_default) {
+                save_alert_sounds (chooser, alert_id);
+        }
+
+        if (add_custom) {
+                save_theme_name (chooser, CUSTOM_THEME_NAME);
+        } else if (remove_custom) {
+                delete_custom_theme_dir ();
+                if (is_custom) {
+                        save_theme_name (chooser, chooser->priv->current_parent);
+                }
+        }
+
+        update_alert_model (chooser, alert_id);
+}
+
+static void
+play_preview_for_id (GvcSoundThemeChooser *chooser,
+                     const char           *id)
+{
+        g_return_if_fail (id != NULL);
+
+        /* special case: for the default item on custom themes
+         * play the alert for the parent theme */
+        if (strcmp (id, DEFAULT_ALERT_ID) == 0) {
+                if (chooser->priv->current_parent != NULL) {
+                        ca_gtk_play_for_widget (GTK_WIDGET (chooser), 0,
+                                                CA_PROP_APPLICATION_NAME, _("Sound Preferences"),
+                                                CA_PROP_EVENT_ID, "bell-window-system",
+                                                CA_PROP_CANBERRA_XDG_THEME_NAME, chooser->priv->current_parent,
+                                                CA_PROP_EVENT_DESCRIPTION, _("Testing event sound"),
+                                                CA_PROP_CANBERRA_CACHE_CONTROL, "never",
+                                                CA_PROP_APPLICATION_ID, "org.gnome.VolumeControl",
+#ifdef CA_PROP_CANBERRA_ENABLE
+                                                CA_PROP_CANBERRA_ENABLE, "1",
+#endif
+                                                NULL);
+                } else {
+                        ca_gtk_play_for_widget (GTK_WIDGET (chooser), 0,
+                                                CA_PROP_APPLICATION_NAME, _("Sound Preferences"),
+                                                CA_PROP_EVENT_ID, "bell-window-system",
+                                                CA_PROP_EVENT_DESCRIPTION, _("Testing event sound"),
+                                                CA_PROP_CANBERRA_CACHE_CONTROL, "never",
+                                                CA_PROP_APPLICATION_ID, "org.gnome.VolumeControl",
+#ifdef CA_PROP_CANBERRA_ENABLE
+                                                CA_PROP_CANBERRA_ENABLE, "1",
+#endif
+                                                NULL);
+                }
+        } else {
+                ca_gtk_play_for_widget (GTK_WIDGET (chooser), 0,
+                                        CA_PROP_APPLICATION_NAME, _("Sound Preferences"),
+                                        CA_PROP_MEDIA_FILENAME, id,
+                                        CA_PROP_EVENT_DESCRIPTION, _("Testing event sound"),
+                                        CA_PROP_CANBERRA_CACHE_CONTROL, "never",
+                                        CA_PROP_APPLICATION_ID, "org.gnome.VolumeControl",
+#ifdef CA_PROP_CANBERRA_ENABLE
+                                        CA_PROP_CANBERRA_ENABLE, "1",
+#endif
+                                        NULL);
+
+        }
+}
+
+static void
+on_treeview_selection_changed (GtkTreeSelection     *selection,
+                               GvcSoundThemeChooser *chooser)
+{
+        GtkTreeModel *model;
+        GtkTreeIter   iter;
+        char         *id;
+
+        if (chooser->priv->treeview == NULL) {
+                return;
+        }
+
+        model = gtk_tree_view_get_model (GTK_TREE_VIEW (chooser->priv->treeview));
+
+        if (gtk_tree_selection_get_selected (selection, &model, &iter) == FALSE) {
+                return;
+        }
+
+        id = NULL;
+        gtk_tree_model_get (model, &iter,
+                            ALERT_IDENTIFIER_COL, &id,
+                            -1);
+        if (id == NULL) {
+                return;
+        }
+
+        play_preview_for_id (chooser, id);
+        update_alert (chooser, id);
+        g_free (id);
+}
+
+static gboolean
+on_treeview_button_pressed (GtkTreeView          *treeview,
+                            GdkEventButton       *event,
+                            GvcSoundThemeChooser *chooser)
+{
+        GtkTreeSelection *selection;
+        GtkTreePath      *path;
+
+        selection = gtk_tree_view_get_selection (treeview);
+        if (gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (treeview),
+                                           event->x, event->y, &path, NULL, NULL, NULL) == FALSE) {
+                return FALSE;
+        }
+
+        if (gtk_tree_selection_path_is_selected (selection, path) == FALSE) {
+                gtk_tree_path_free (path);
+                return FALSE;
+        }
+        gtk_tree_path_free (path);
+
+        on_treeview_selection_changed (selection, chooser);
+
+        return FALSE;
+}
+
+static GtkWidget *
+create_alert_treeview (GvcSoundThemeChooser *chooser)
+{
+        GtkListStore         *store;
+        GtkWidget            *treeview;
+        GtkCellRenderer      *renderer;
+        GtkTreeViewColumn    *column;
+        GtkTreeSelection     *selection;
+
+        treeview = gtk_tree_view_new ();
+        gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (treeview), FALSE);
+        g_signal_connect (treeview,
+                          "button-press-event",
+                          G_CALLBACK (on_treeview_button_pressed),
+                          chooser);
+
+        selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview));
+        gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
+        g_signal_connect (selection,
+                          "changed",
+                          G_CALLBACK (on_treeview_selection_changed),
+                          chooser);
+
+        /* Setup the tree model, 3 columns:
+         * - display name
+         * - sound id
+         * - sound type
+         */
+        store = gtk_list_store_new (ALERT_NUM_COLS,
+                                    G_TYPE_STRING,
+                                    G_TYPE_STRING,
+                                    G_TYPE_STRING);
+
+        gtk_list_store_insert_with_values (store,
+                                           NULL,
+                                           G_MAXINT,
+                                           ALERT_IDENTIFIER_COL, DEFAULT_ALERT_ID,
+                                           ALERT_DISPLAY_COL, _("Default"),
+                                           ALERT_SOUND_TYPE_COL, _("From theme"),
+                                           -1);
+
+        populate_model_from_dir (chooser, GTK_TREE_MODEL (store), SOUND_SET_DIR);
+
+        gtk_tree_view_set_model (GTK_TREE_VIEW (treeview),
+                                 GTK_TREE_MODEL (store));
+
+        renderer = gtk_cell_renderer_text_new ();
+        column = gtk_tree_view_column_new_with_attributes (_("Name"),
+                                                           renderer,
+                                                           "text", ALERT_DISPLAY_COL,
+                                                           NULL);
+        gtk_tree_view_append_column (GTK_TREE_VIEW (treeview), column);
+
+        return treeview;
+}
+
+static int
+get_file_type (const char *sound_name,
+               char      **linked_name)
+{
+        char *name, *filename;
+
+        *linked_name = NULL;
+
+        name = g_strdup_printf ("%s.disabled", sound_name);
+        filename = custom_theme_dir_path (name);
+        g_free (name);
+
+        if (g_file_test (filename, G_FILE_TEST_IS_REGULAR) != FALSE) {
+                g_free (filename);
+                return SOUND_TYPE_OFF;
+        }
+        g_free (filename);
+
+        /* We only check for .ogg files because those are the
+         * only ones we create */
+        name = g_strdup_printf ("%s.ogg", sound_name);
+        filename = custom_theme_dir_path (name);
+        g_free (name);
+
+        if (g_file_test (filename, G_FILE_TEST_IS_SYMLINK) != FALSE) {
+                *linked_name = g_file_read_link (filename, NULL);
+                g_free (filename);
+                return SOUND_TYPE_CUSTOM;
+        }
+        g_free (filename);
+
+        return SOUND_TYPE_BUILTIN;
+}
+
+static void
+update_alerts_from_theme_name (GvcSoundThemeChooser *chooser,
+                               const char           *name)
+{
+        if (strcmp (name, CUSTOM_THEME_NAME) != 0) {
+                /* reset alert to default */
+                update_alert (chooser, DEFAULT_ALERT_ID);
+        } else {
+                int   sound_type;
+                char *linkname;
+
+                linkname = NULL;
+                sound_type = get_file_type ("bell-terminal", &linkname);
+                g_debug ("Found link: %s", linkname);
+                if (sound_type == SOUND_TYPE_CUSTOM) {
+                        update_alert (chooser, linkname);
+                }
+        }
+}
+
+static void
+update_theme (GvcSoundThemeChooser *chooser)
+{
+        gboolean     events_enabled;
+        char        *last_theme;
+
+        events_enabled = g_settings_get_boolean (chooser->priv->sound_settings, EVENT_SOUNDS_KEY);
+
+        last_theme = chooser->priv->current_theme;
+        if (events_enabled) {
+                chooser->priv->current_theme = g_settings_get_string (chooser->priv->sound_settings, SOUND_THEME_KEY);
+        } else {
+                chooser->priv->current_theme = g_strdup (NO_SOUNDS_THEME_NAME);
+        }
+
+        if (g_strcmp0 (last_theme, chooser->priv->current_theme) != 0) {
+                g_free (chooser->priv->current_parent);
+                if (load_theme_name (chooser->priv->current_theme,
+                                     &chooser->priv->current_parent) == FALSE) {
+                        g_free (chooser->priv->current_theme);
+                        chooser->priv->current_theme = g_strdup (DEFAULT_THEME);
+                        load_theme_name (DEFAULT_THEME,
+                                         &chooser->priv->current_parent);
+                }
+        }
+        g_free (last_theme);
+
+        gtk_widget_set_sensitive (chooser->priv->selection_box, events_enabled);
+
+        update_alerts_from_theme_name (chooser, chooser->priv->current_theme);
+}
+
+static GObject *
+gvc_sound_theme_chooser_constructor (GType                  type,
+                                     guint                  n_construct_properties,
+                                     GObjectConstructParam *construct_params)
+{
+        GObject              *object;
+        GvcSoundThemeChooser *self;
+
+        object = G_OBJECT_CLASS (gvc_sound_theme_chooser_parent_class)->constructor (type, n_construct_properties, construct_params);
+
+        self = GVC_SOUND_THEME_CHOOSER (object);
+
+        update_theme (self);
+
+        return object;
+}
+
+static void
+gvc_sound_theme_chooser_class_init (GvcSoundThemeChooserClass *klass)
+{
+        GObjectClass   *object_class = G_OBJECT_CLASS (klass);
+
+        object_class->constructor = gvc_sound_theme_chooser_constructor;
+        object_class->finalize = gvc_sound_theme_chooser_finalize;
+
+        g_type_class_add_private (klass, sizeof (GvcSoundThemeChooserPrivate));
+}
+
+static void
+on_sound_settings_changed (GSettings            *settings,
+                           const char           *key,
+                           GvcSoundThemeChooser *chooser)
+{
+        if (strcmp (key, EVENT_SOUNDS_KEY) == 0) {
+                update_theme (chooser);
+        } else if (strcmp (key, SOUND_THEME_KEY) == 0) {
+                update_theme (chooser);
+        } else if (strcmp (key, INPUT_SOUNDS_KEY) == 0) {
+                update_theme (chooser);
+        }
+}
+
+static void
+on_audible_bell_changed (GSettings            *settings,
+                         const char           *key,
+                         GvcSoundThemeChooser *chooser)
+{
+        update_theme (chooser);
+}
+
+static void
+setup_list_size_constraint (GtkWidget *widget,
+                            GtkWidget *to_size)
+{
+        GtkRequisition req;
+        int            max_height;
+
+        /* constrain height to be the tree height up to a max */
+        max_height = (gdk_screen_get_height (gtk_widget_get_screen (widget))) / 4;
+
+        gtk_widget_get_preferred_size (to_size, NULL, &req);
+
+        gtk_scrolled_window_set_min_content_height (GTK_SCROLLED_WINDOW (widget),
+                                                    MIN (req.height, max_height));
+}
+
+static void
+gvc_sound_theme_chooser_init (GvcSoundThemeChooser *chooser)
+{
+        GtkWidget   *box;
+        GtkWidget   *label;
+        GtkWidget   *scrolled_window;
+        GtkWidget   *alignment;
+        char        *str;
+
+        chooser->priv = GVC_SOUND_THEME_CHOOSER_GET_PRIVATE (chooser);
+
+        chooser->priv->settings = g_settings_new (WM_SCHEMA);
+        chooser->priv->sound_settings = g_settings_new (KEY_SOUNDS_SCHEMA);
+
+        str = g_strdup_printf ("<b>%s</b>", _("C_hoose an alert sound:"));
+        chooser->priv->selection_box = box = gtk_frame_new (str);
+        g_free (str);
+        label = gtk_frame_get_label_widget (GTK_FRAME (box));
+        gtk_label_set_use_underline (GTK_LABEL (label), TRUE);
+        gtk_label_set_use_markup (GTK_LABEL (label), TRUE);
+        gtk_frame_set_shadow_type (GTK_FRAME (box), GTK_SHADOW_NONE);
+
+        alignment = gtk_alignment_new (0, 0, 1, 1);
+        gtk_alignment_set_padding (GTK_ALIGNMENT (alignment), 6, 0, 0, 0);
+        gtk_container_add (GTK_CONTAINER (alignment), box);
+        gtk_box_pack_start (GTK_BOX (chooser), alignment, TRUE, TRUE, 6);
+
+        alignment = gtk_alignment_new (0, 0, 1, 1);
+        gtk_alignment_set_padding (GTK_ALIGNMENT (alignment), 6, 0, 0, 0);
+        gtk_container_add (GTK_CONTAINER (box), alignment);
+
+        chooser->priv->treeview = create_alert_treeview (chooser);
+        gtk_label_set_mnemonic_widget (GTK_LABEL (label), chooser->priv->treeview);
+
+        scrolled_window = gtk_scrolled_window_new (NULL, NULL);
+        setup_list_size_constraint (scrolled_window, chooser->priv->treeview);
+
+        gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
+                                        GTK_POLICY_NEVER,
+                                        GTK_POLICY_AUTOMATIC);
+        gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window),
+                                             GTK_SHADOW_IN);
+        gtk_container_add (GTK_CONTAINER (scrolled_window), chooser->priv->treeview);
+        gtk_container_add (GTK_CONTAINER (alignment), scrolled_window);
+
+        g_signal_connect (G_OBJECT (chooser->priv->sound_settings), "changed",
+                          G_CALLBACK (on_sound_settings_changed), chooser);
+        g_signal_connect (chooser->priv->settings, "changed::" AUDIO_BELL_KEY,
+                          G_CALLBACK (on_audible_bell_changed), chooser);
+}
+
+static void
+gvc_sound_theme_chooser_finalize (GObject *object)
+{
+        GvcSoundThemeChooser *sound_theme_chooser;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GVC_IS_SOUND_THEME_CHOOSER (object));
+
+        sound_theme_chooser = GVC_SOUND_THEME_CHOOSER (object);
+
+        if (sound_theme_chooser->priv != NULL) {
+                g_object_unref (sound_theme_chooser->priv->settings);
+                g_object_unref (sound_theme_chooser->priv->sound_settings);
+        }
+
+        G_OBJECT_CLASS (gvc_sound_theme_chooser_parent_class)->finalize (object);
+}
+
+GtkWidget *
+gvc_sound_theme_chooser_new (void)
+{
+        GObject *chooser;
+        chooser = g_object_new (GVC_TYPE_SOUND_THEME_CHOOSER,
+                                "spacing", 6,
+                                NULL);
+        return GTK_WIDGET (chooser);
+}
 
=== modified file 'debian/changelog'
--- debian/changelog	2014-04-02 10:52:39 +0000
+++ debian/changelog	2014-07-07 05:56:11 +0000
@@ -1,3 +1,9 @@
+gnome-control-center (1:3.4.2-0ubuntu0.13.3) precise; urgency=medium
+
+  * sound: fix potential memory corruption (LP: #1236612)
+
+ -- Madper Xie <[e-mail]>  Mon, 07 Jul 2014 13:41:57 +0800
+
 gnome-control-center (1:3.4.2-0ubuntu0.13.2) precise; urgency=medium
 
   * Disable the input/output bar when no input/output devices (LP: #1291862)
 
=== modified file 'debian/patches/series'
--- debian/patches/series	2014-04-02 10:52:39 +0000
+++ debian/patches/series	2014-07-07 05:56:11 +0000
@@ -44,3 +44,4 @@
 use_rfkill_airplane_mode.patch
 more-power-suspend-options.patch
 fix-input-device-bar-status.patch
+sound-fix-potential-memory-corruption.patch
 
=== added file 'debian/patches/sound-fix-potential-memory-corruption.patch'
--- debian/patches/sound-fix-potential-memory-corruption.patch	1970-01-01 00:00:00 +0000
+++ debian/patches/sound-fix-potential-memory-corruption.patch	2014-07-07 05:56:11 +0000
@@ -0,0 +1,12 @@
+Index: gnome-control-center/panels/sound/gvc-sound-theme-chooser.c
+===================================================================
+--- gnome-control-center.orig/panels/sound/gvc-sound-theme-chooser.c	2014-07-07 12:40:00.839504000 +0800
++++ gnome-control-center/panels/sound/gvc-sound-theme-chooser.c	2014-07-07 12:48:15.822986459 +0800
+@@ -672,6 +672,7 @@
+ 
+         if (g_strcmp0 (last_theme, chooser->priv->current_theme) != 0) {
+                 g_free (chooser->priv->current_parent);
++                chooser->priv->current_parent = NULL;
+                 if (load_theme_name (chooser->priv->current_theme,
+                                      &chooser->priv->current_parent) == FALSE) {
+                         g_free (chooser->priv->current_theme);
 
=== modified file 'panels/sound/gvc-sound-theme-chooser.c'
--- panels/sound/gvc-sound-theme-chooser.c	2012-02-15 23:16:31 +0000
+++ panels/sound/gvc-sound-theme-chooser.c	2014-07-07 05:56:11 +0000
@@ -672,6 +672,7 @@
 
         if (g_strcmp0 (last_theme, chooser->priv->current_theme) != 0) {
                 g_free (chooser->priv->current_parent);
+                chooser->priv->current_parent = NULL;
                 if (load_theme_name (chooser->priv->current_theme,
                                      &chooser->priv->current_parent) == FALSE) {
                         g_free (chooser->priv->current_theme);