daemon: Replace old method/signal-based API with async method calls

Before, the session worker and session communicated by a series of signals
and methods... but backwards. The session worker would listen for a series
of signals sent out by the session, and respond back by calling methods on
it. This requires a lot of annoying, silly manual labor when trying to add
another method to the API.

So, reverse the API so that the worker manager calls async methods on the
worker itself.

https://bugzilla.gnome.org/show_bug.cgi?id=678057

1 files changed, 57 insertions, 0 deletions

diff --git a/daemon/gdm-session-worker-common.c b/daemon/gdm-session-worker-common.c
new file mode 100644
index 00000000..235df845
--- /dev/null
+++ b/daemon/gdm-session-worker-common.c
@@ -0,0 +1,57 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2006 Ray Strode <rstrode@redhat.com>
+ * Copyright (C) 2012 Jasper St. Pierre <jstpierre@mecheye.net>
+ *
+ * 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, 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 <gio/gio.h>
+
+#include "gdm-session-worker-common.h"
+
+static const GDBusErrorEntry gdm_session_worker_error_entries[] = {
+        { GDM_SESSION_WORKER_ERROR_GENERIC              , "org.gnome.DisplayManager.SessionWorker.Error.Generic", },
+        { GDM_SESSION_WORKER_ERROR_WITH_SESSION_COMMAND , "org.gnome.DisplayManager.SessionWorker.Error.WithSessionCommand" },
+        { GDM_SESSION_WORKER_ERROR_FORKING              , "org.gnome.DisplayManager.SessionWorker.Error.Forking" },
+        { GDM_SESSION_WORKER_ERROR_OPENING_MESSAGE_PIPE , "org.gnome.DisplayManager.SessionWorker.Error.OpeningMessagePipe" },
+        { GDM_SESSION_WORKER_ERROR_COMMUNICATING        , "org.gnome.DisplayManager.SessionWorker.Error.Communicating" },
+        { GDM_SESSION_WORKER_ERROR_WORKER_DIED          , "org.gnome.DisplayManager.SessionWorker.Error.WorkerDied" },
+        { GDM_SESSION_WORKER_ERROR_SERVICE_UNAVAILABLE  , "org.gnome.DisplayManager.SessionWorker.Error.ServiceUnavailable" },
+        { GDM_SESSION_WORKER_ERROR_AUTHENTICATING       , "org.gnome.DisplayManager.SessionWorker.Error.Authenticating" },
+        { GDM_SESSION_WORKER_ERROR_AUTHORIZING          , "org.gnome.DisplayManager.SessionWorker.Error.Authorizing" },
+        { GDM_SESSION_WORKER_ERROR_OPENING_LOG_FILE     , "org.gnome.DisplayManager.SessionWorker.Error.OpeningLogFile" },
+        { GDM_SESSION_WORKER_ERROR_OPENING_SESSION      , "org.gnome.DisplayManager.SessionWorker.Error.OpeningSession" },
+        { GDM_SESSION_WORKER_ERROR_GIVING_CREDENTIALS   , "org.gnome.DisplayManager.SessionWorker.Error.GivingCredentials" },
+        { GDM_SESSION_WORKER_ERROR_WRONG_STATE          , "org.gnome.DisplayManager.SessionWorker.Error.WrongState" },
+        { GDM_SESSION_WORKER_ERROR_OUTSTANDING_REQUEST  , "org.gnome.DisplayManager.SessionWorker.Error.OutstandingRequest" },
+        { GDM_SESSION_WORKER_ERROR_IN_REAUTH_SESSION    , "org.gnome.DisplayManager.SessionWorker.Error.InReauthSession" }
+};
+
+GQuark
+gdm_session_worker_error_quark (void)
+{
+        static volatile gsize error_quark = 0;
+
+        g_dbus_error_register_error_domain ("gdm-session-worker-error-quark",
+                                            &error_quark,
+                                            gdm_session_worker_error_entries,
+                                            G_N_ELEMENTS (gdm_session_worker_error_entries));
+
+        return (GQuark) error_quark;
+}