[gnome-session] gsm: Also support disable-log-out for Shutdown/CanShutdown dbus methods

[Vincent Untz <vuntz src gnome org>]

commit 107cfa7a4f6f43698407772e31472d742bdb219f
Author: Vincent Untz <vuntz gnome org>
Date:   Tue Mar 22 00:47:24 2011 +0100

    gsm: Also support disable-log-out for Shutdown/CanShutdown dbus methods
    
    On top of that, be a bit paranoid and ensure we don't log out in
    end_phase() by checking the lockdown setting there too.

 gnome-session/gsm-manager.c |   40 ++++++++++++++++++++++++++++++----------
 1 files changed, 30 insertions(+), 10 deletions(-)
---
diff --git a/gnome-session/gsm-manager.c b/gnome-session/gsm-manager.c
index f967d2d..ff0fe04 100644
--- a/gnome-session/gsm-manager.c
+++ b/gnome-session/gsm-manager.c
@@ -180,6 +180,8 @@ static void     gsm_manager_finalize    (GObject         *object);
 static gboolean auto_save_is_enabled (GsmManager *manager);
 static void     maybe_save_session   (GsmManager *manager);
 
+static gboolean _log_out_is_locked_down (GsmManager *manager);
+
 static void     _handle_client_end_session_response (GsmManager *manager,
                                                      GsmClient  *client,
                                                      gboolean    is_ok,
@@ -505,6 +507,8 @@ gsm_manager_quit (GsmManager *manager)
 static void
 end_phase (GsmManager *manager)
 {
+        gboolean start_next_phase = TRUE;
+
         g_debug ("GsmManager: ending phase %s\n",
                  phase_num_to_name (manager->priv->phase));
 
@@ -533,25 +537,32 @@ end_phase (GsmManager *manager)
         case GSM_MANAGER_PHASE_PANEL:
         case GSM_MANAGER_PHASE_DESKTOP:
         case GSM_MANAGER_PHASE_APPLICATION:
+                break;
         case GSM_MANAGER_PHASE_RUNNING:
+                if (_log_out_is_locked_down (manager)) {
+                        g_warning ("Unable to logout: Logout has been locked down");
+                        start_next_phase = FALSE;
+                }
+                break;
         case GSM_MANAGER_PHASE_QUERY_END_SESSION:
-                manager->priv->phase++;
-                start_phase (manager);
                 break;
         case GSM_MANAGER_PHASE_END_SESSION:
-                if (auto_save_is_enabled (manager)) {
+                if (auto_save_is_enabled (manager))
                         maybe_save_session (manager);
-                }
-                manager->priv->phase++;
-                start_phase (manager);
                 break;
         case GSM_MANAGER_PHASE_EXIT:
+                start_next_phase = FALSE;
                 gsm_manager_quit (manager);
                 break;
         default:
                 g_assert_not_reached ();
                 break;
         }
+
+        if (start_next_phase) {
+                manager->priv->phase++;
+                start_phase (manager);
+        }
 }
 
 static void
@@ -3305,6 +3316,14 @@ gsm_manager_shutdown (GsmManager *manager,
                 return FALSE;
         }
 
+        if (_log_out_is_locked_down (manager)) {
+                g_set_error (error,
+                             GSM_MANAGER_ERROR,
+                             GSM_MANAGER_ERROR_LOCKED_DOWN,
+                             "Logout has been locked down");
+                return FALSE;
+        }
+
         shell_running = gsm_shell_is_running (manager->priv->shell);
 
         if (!shell_running) {
@@ -3335,10 +3354,11 @@ gsm_manager_can_shutdown (GsmManager *manager,
         g_return_val_if_fail (GSM_IS_MANAGER (manager), FALSE);
 
         consolekit = gsm_get_consolekit ();
-        *shutdown_available = gsm_consolekit_can_stop (consolekit)
-                              || gsm_consolekit_can_restart (consolekit)
-                              || can_suspend
-                              || can_hibernate;
+        *shutdown_available = !_log_out_is_locked_down (manager) &&
+                              (gsm_consolekit_can_stop (consolekit)
+                               || gsm_consolekit_can_restart (consolekit)
+                               || can_suspend
+                               || can_hibernate);
         g_object_unref (consolekit);
 
         return TRUE;