[mutter] x11/window-props: Convert WM_NAME and WM_CLASS to UTF-8

[Rui Matos <rtcm src gnome org>]

commit d62491f46eba748ece8298886ff75ad337ac6fc6
Author: Rui Matos <tiagomatos gmail com>
Date:   Tue Mar 22 20:30:43 2016 +0100

    x11/window-props: Convert WM_NAME and WM_CLASS to UTF-8
    
    gjs throws exceptions on non UTF-8 strings which, in some cases, crash
    gnome-shell. ICCCM string properties are defined to be Latin-1 encoded
    so we can try to convert them to avoid it.
    
    Note that _NET_WM_NAME is defined to be UTF-8 and we already validate
    it in utf8_string_from_results() .
    
    https://bugzilla.gnome.org/show_bug.cgi?id=752788

 src/x11/window-props.c |   15 +++++++++++----
 1 files changed, 11 insertions(+), 4 deletions(-)
---
diff --git a/src/x11/window-props.c b/src/x11/window-props.c
index 0a67980..85c03c5 100644
--- a/src/x11/window-props.c
+++ b/src/x11/window-props.c
@@ -635,7 +635,10 @@ reload_wm_name (MetaWindow    *window,
 
   if (value->type != META_PROP_VALUE_INVALID)
     {
-      set_window_title (window, value->v.str);
+      g_autofree gchar *title = g_convert (value->v.str, -1,
+                                           "UTF-8", "LATIN1",
+                                           NULL, NULL, NULL);
+      set_window_title (window, title);
 
       meta_verbose ("Using WM_NAME for new title of %s: \"%s\"\n",
                     window->desc, window->title);
@@ -969,9 +972,13 @@ reload_wm_class (MetaWindow    *window,
 {
   if (value->type != META_PROP_VALUE_INVALID)
     {
-      meta_window_set_wm_class (window,
-                                value->v.class_hint.res_class,
-                                value->v.class_hint.res_name);
+      g_autofree gchar *res_class = g_convert (value->v.class_hint.res_class, -1,
+                                               "UTF-8", "LATIN1",
+                                               NULL, NULL, NULL);
+      g_autofree gchar *res_name = g_convert (value->v.class_hint.res_name, -1,
+                                              "UTF-8", "LATIN1",
+                                              NULL, NULL, NULL);
+      meta_window_set_wm_class (window, res_class, res_name);
     }
   else
     {