shell: Refuse to run under unsupported desktops

Closes: #945

2 files changed, 38 insertions, 1 deletions

diff --git a/shell/main.c b/shell/main.c
index 5a30382be..b8c0cc76a 100644
--- a/shell/main.c
+++ b/shell/main.c
@@ -33,6 +33,36 @@
 #include "cc-log.h"
 #include "cc-application.h"
 
+static char **
+get_current_desktops (void)
+{
+  const char *envvar;
+
+  envvar = g_getenv ("XDG_CURRENT_DESKTOP");
+
+  if (!envvar)
+    return g_new0 (char *, 0 + 1);
+
+  return g_strsplit (envvar, G_SEARCHPATH_SEPARATOR_S, 0);
+}
+
+static gboolean
+is_supported_desktop (void)
+{
+  g_auto(GStrv) desktops = NULL;
+  guint i;
+
+  desktops = get_current_desktops ();
+  for (i = 0; desktops[i] != NULL; i++)
+    {
+      /* This matches OnlyShowIn in gnome-control-center.desktop.in.in */
+      if (g_ascii_strcasecmp (desktops[i], "GNOME") == 0)
+        return TRUE;
+    }
+
+  return FALSE;
+}
+
 int
 main (gint    argc,
       gchar **argv)
@@ -46,6 +76,12 @@ main (gint    argc,
   setlocale (LC_ALL, "");
   cc_log_init ();
 
+  if (!is_supported_desktop ())
+    {
+      g_message ("Running gnome-control-center is only supported under GNOME and Unity, exiting");
+      return 1;
+    }
+
   application = cc_application_new ();
 
   return g_application_run (G_APPLICATION (application), argc, argv);
diff --git a/shell/org.gnome.Settings.desktop.in b/shell/org.gnome.Settings.desktop.in
index 5eb6055a8..1af2cd1d8 100644
--- a/shell/org.gnome.Settings.desktop.in
+++ b/shell/org.gnome.Settings.desktop.in
@@ -7,7 +7,8 @@ Terminal=false
 Type=Application
 StartupNotify=true
 Categories=GNOME;GTK;Settings;
-OnlyShowIn=GNOME;Unity;
+# See also is_supported_desktop() in main.c
+OnlyShowIn=GNOME;
 # Translators: Search terms to find this app. Do NOT translate or localize the semicolons! The list MUST also end with a semicolon!
 Keywords=Preferences;Settings;
 # Translators: Do NOT translate or transliterate this text (these are enum types)!