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-rw-r--r--plugins/screensaver-proxy/gsd-screensaver-proxy-manager.c444
1 files changed, 444 insertions, 0 deletions
diff --git a/plugins/screensaver-proxy/gsd-screensaver-proxy-manager.c b/plugins/screensaver-proxy/gsd-screensaver-proxy-manager.c
new file mode 100644
index 0000000..e434eb9
--- /dev/null
+++ b/plugins/screensaver-proxy/gsd-screensaver-proxy-manager.c
@@ -0,0 +1,444 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2012 Bastien Nocera <hadess@hadess.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 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <locale.h>
+
+#include <glib/gi18n.h>
+#include <gio/gio.h>
+
+#include "gnome-settings-bus.h"
+#include "gnome-settings-profile.h"
+#include "gsd-screensaver-proxy-manager.h"
+
+/* As available in:
+ * https://projects.kde.org/projects/kde/kde-workspace/repository/revisions/master/entry/ksmserver/screenlocker/dbus/org.freedesktop.ScreenSaver.xml
+ * and documented in:
+ * https://projects.kde.org/projects/kde/kde-workspace/repository/revisions/master/entry/ksmserver/screenlocker/interface.h */
+static const gchar introspection_xml[] =
+"<node name='/org/freedesktop/ScreenSaver'>"
+ "<interface name='org.freedesktop.ScreenSaver'>"
+ "<method name='Lock'/>"
+ "<method name='SimulateUserActivity'/>"
+ "<method name='GetActive'>"
+ "<arg type='b' direction='out'/>"
+ "</method>"
+ "<method name='GetActiveTime'>"
+ "<arg name='seconds' type='u' direction='out'/>"
+ "</method>"
+ "<method name='GetSessionIdleTime'>"
+ "<arg name='seconds' type='u' direction='out'/>"
+ "</method>"
+ "<method name='SetActive'>"
+ "<arg type='b' direction='out'/>"
+ "<arg name='e' type='b' direction='in'/>"
+ "</method>"
+ "<method name='Inhibit'>"
+ "<arg name='application_name' type='s' direction='in'/>"
+ "<arg name='reason_for_inhibit' type='s' direction='in'/>"
+ "<arg name='cookie' type='u' direction='out'/>"
+ "</method>"
+ "<method name='UnInhibit'>"
+ "<arg name='cookie' type='u' direction='in'/>"
+ "</method>"
+ "<method name='Throttle'>"
+ "<arg name='application_name' type='s' direction='in'/>"
+ "<arg name='reason_for_inhibit' type='s' direction='in'/>"
+ "<arg name='cookie' type='u' direction='out'/>"
+ "</method>"
+ "<method name='UnThrottle'>"
+ "<arg name='cookie' type='u' direction='in'/>"
+ "</method>"
+
+ "<signal name='ActiveChanged'>"
+ "<arg type='b'/>"
+ "</signal>"
+ "</interface>"
+"</node>";
+static const gchar introspection_xml2[] =
+"<node name='/ScreenSaver'>"
+ "<interface name='org.freedesktop.ScreenSaver'>"
+ "<method name='Lock'/>"
+ "<method name='SimulateUserActivity'/>"
+ "<method name='GetActive'>"
+ "<arg type='b' direction='out'/>"
+ "</method>"
+ "<method name='GetActiveTime'>"
+ "<arg name='seconds' type='u' direction='out'/>"
+ "</method>"
+ "<method name='GetSessionIdleTime'>"
+ "<arg name='seconds' type='u' direction='out'/>"
+ "</method>"
+ "<method name='SetActive'>"
+ "<arg type='b' direction='out'/>"
+ "<arg name='e' type='b' direction='in'/>"
+ "</method>"
+ "<method name='Inhibit'>"
+ "<arg name='application_name' type='s' direction='in'/>"
+ "<arg name='reason_for_inhibit' type='s' direction='in'/>"
+ "<arg name='cookie' type='u' direction='out'/>"
+ "</method>"
+ "<method name='UnInhibit'>"
+ "<arg name='cookie' type='u' direction='in'/>"
+ "</method>"
+ "<method name='Throttle'>"
+ "<arg name='application_name' type='s' direction='in'/>"
+ "<arg name='reason_for_inhibit' type='s' direction='in'/>"
+ "<arg name='cookie' type='u' direction='out'/>"
+ "</method>"
+ "<method name='UnThrottle'>"
+ "<arg name='cookie' type='u' direction='in'/>"
+ "</method>"
+
+ "<signal name='ActiveChanged'>"
+ "<arg type='b'/>"
+ "</signal>"
+ "</interface>"
+"</node>";
+
+#define GSD_SCREENSAVER_PROXY_DBUS_SERVICE "org.freedesktop.ScreenSaver"
+#define GSD_SCREENSAVER_PROXY_DBUS_PATH "/org/freedesktop/ScreenSaver"
+#define GSD_SCREENSAVER_PROXY_DBUS_PATH2 "/ScreenSaver"
+#define GSD_SCREENSAVER_PROXY_DBUS_INTERFACE "org.freedesktop.ScreenSaver"
+
+#define GSM_INHIBITOR_FLAG_IDLE 1 << 3
+
+struct _GsdScreensaverProxyManager
+{
+ GObject parent;
+
+ GsdSessionManager *session;
+ GDBusConnection *connection;
+ GCancellable *bus_cancellable;
+ GDBusNodeInfo *introspection_data;
+ GDBusNodeInfo *introspection_data2;
+ guint name_id;
+
+ GHashTable *watch_ht; /* key = sender, value = name watch id */
+ GHashTable *cookie_ht; /* key = cookie, value = sender */
+};
+
+static void gsd_screensaver_proxy_manager_class_init (GsdScreensaverProxyManagerClass *klass);
+static void gsd_screensaver_proxy_manager_init (GsdScreensaverProxyManager *screensaver_proxy_manager);
+static void gsd_screensaver_proxy_manager_finalize (GObject *object);
+
+G_DEFINE_TYPE (GsdScreensaverProxyManager, gsd_screensaver_proxy_manager, G_TYPE_OBJECT)
+
+static gpointer manager_object = NULL;
+
+static void
+name_vanished_cb (GDBusConnection *connection,
+ const gchar *name,
+ GsdScreensaverProxyManager *manager)
+{
+ GHashTableIter iter;
+ gpointer cookie_ptr;
+ const char *sender;
+
+ /* Look for all the cookies under that name,
+ * and call uninhibit for them */
+ g_hash_table_iter_init (&iter, manager->cookie_ht);
+ while (g_hash_table_iter_next (&iter, &cookie_ptr, (gpointer *) &sender)) {
+ if (g_strcmp0 (sender, name) == 0) {
+ guint cookie = GPOINTER_TO_UINT (cookie_ptr);
+
+ g_dbus_proxy_call_sync (G_DBUS_PROXY (manager->session),
+ "Uninhibit",
+ g_variant_new ("(u)", cookie),
+ G_DBUS_CALL_FLAGS_NONE,
+ -1, NULL, NULL);
+ g_debug ("Removing cookie %u for sender %s",
+ cookie, sender);
+ g_hash_table_iter_remove (&iter);
+ }
+ }
+
+ g_hash_table_remove (manager->watch_ht, name);
+}
+
+static void
+handle_method_call (GDBusConnection *connection,
+ const gchar *sender,
+ const gchar *object_path,
+ const gchar *interface_name,
+ const gchar *method_name,
+ GVariant *parameters,
+ GDBusMethodInvocation *invocation,
+ gpointer user_data)
+{
+ GsdScreensaverProxyManager *manager = GSD_SCREENSAVER_PROXY_MANAGER (user_data);
+ g_autoptr(GError) error = NULL;
+
+ /* Check session pointer as a proxy for whether the manager is in the
+ start or stop state */
+ if (manager->session == NULL) {
+ g_dbus_method_invocation_return_dbus_error (invocation,
+ "org.freedesktop.DBus.Error.NotSupported",
+ "Session is unavailable");
+ return;
+ }
+
+ g_debug ("Calling method '%s.%s' for ScreenSaver Proxy",
+ interface_name, method_name);
+
+ if (g_strcmp0 (method_name, "Inhibit") == 0) {
+ GVariant *ret;
+ const char *app_id;
+ const char *reason;
+ guint cookie;
+
+ g_variant_get (parameters,
+ "(ss)", &app_id, &reason);
+
+ ret = g_dbus_proxy_call_sync (G_DBUS_PROXY (G_DBUS_PROXY (manager->session)),
+ "Inhibit",
+ g_variant_new ("(susu)",
+ app_id, 0, reason, GSM_INHIBITOR_FLAG_IDLE),
+ G_DBUS_CALL_FLAGS_NONE,
+ -1, NULL, &error);
+
+ if (!ret)
+ goto error;
+
+ g_variant_get (ret, "(u)", &cookie);
+ g_hash_table_insert (manager->cookie_ht,
+ GUINT_TO_POINTER (cookie),
+ g_strdup (sender));
+ if (g_hash_table_lookup (manager->watch_ht, sender) == NULL) {
+ guint watch_id;
+
+ watch_id = g_bus_watch_name_on_connection (manager->connection,
+ sender,
+ G_BUS_NAME_WATCHER_FLAGS_NONE,
+ NULL,
+ (GBusNameVanishedCallback) name_vanished_cb,
+ manager,
+ NULL);
+ g_hash_table_insert (manager->watch_ht,
+ g_strdup (sender),
+ GUINT_TO_POINTER (watch_id));
+ }
+ g_dbus_method_invocation_return_value (invocation, ret);
+ } else if (g_strcmp0 (method_name, "UnInhibit") == 0) {
+ GVariant *ret;
+ guint cookie;
+
+ g_variant_get (parameters, "(u)", &cookie);
+ ret = g_dbus_proxy_call_sync (G_DBUS_PROXY (manager->session),
+ "Uninhibit",
+ parameters,
+ G_DBUS_CALL_FLAGS_NONE,
+ -1, NULL, &error);
+
+ if (!ret)
+ goto error;
+
+ g_debug ("Removing cookie %u from the list for %s", cookie, sender);
+ g_hash_table_remove (manager->cookie_ht, GUINT_TO_POINTER (cookie));
+ g_dbus_method_invocation_return_value (invocation, NULL);
+ } else if (g_strcmp0 (method_name, "Throttle") == 0) {
+ g_dbus_method_invocation_return_value (invocation, NULL);
+ } else if (g_strcmp0 (method_name, "UnThrottle") == 0) {
+ g_dbus_method_invocation_return_value (invocation, NULL);
+ } else if (g_strcmp0 (method_name, "Lock") == 0) {
+ goto unimplemented;
+ } else if (g_strcmp0 (method_name, "SimulateUserActivity") == 0) {
+ goto unimplemented;
+ } else if (g_strcmp0 (method_name, "GetActive") == 0) {
+ goto unimplemented;
+ } else if (g_strcmp0 (method_name, "GetActiveTime") == 0) {
+ goto unimplemented;
+ } else if (g_strcmp0 (method_name, "GetSessionIdleTime") == 0) {
+ goto unimplemented;
+ } else if (g_strcmp0 (method_name, "SetActive") == 0) {
+ goto unimplemented;
+ }
+
+ return;
+
+unimplemented:
+ g_dbus_method_invocation_return_dbus_error (invocation,
+ "org.freedesktop.DBus.Error.NotSupported",
+ "This method is not implemented");
+ return;
+error:
+ g_dbus_method_invocation_return_gerror (invocation, error);
+}
+
+static const GDBusInterfaceVTable interface_vtable =
+{
+ handle_method_call,
+ NULL, /* GetProperty */
+ NULL, /* SetProperty */
+};
+
+static void
+on_bus_gotten (GObject *source_object,
+ GAsyncResult *res,
+ GsdScreensaverProxyManager *manager)
+{
+ GDBusConnection *connection;
+ GDBusInterfaceInfo **infos;
+ GError *error = NULL;
+
+ if (manager->bus_cancellable == NULL ||
+ g_cancellable_is_cancelled (manager->bus_cancellable)) {
+ g_warning ("Operation has been cancelled, so not retrieving session bus");
+ return;
+ }
+
+ connection = g_bus_get_finish (res, &error);
+ if (connection == NULL) {
+ g_warning ("Could not get session bus: %s", error->message);
+ g_error_free (error);
+ return;
+ }
+ manager->connection = connection;
+ infos = manager->introspection_data->interfaces;
+ g_dbus_connection_register_object (connection,
+ GSD_SCREENSAVER_PROXY_DBUS_PATH,
+ infos[0],
+ &interface_vtable,
+ manager,
+ NULL,
+ NULL);
+ infos = manager->introspection_data2->interfaces;
+ g_dbus_connection_register_object (connection,
+ GSD_SCREENSAVER_PROXY_DBUS_PATH2,
+ infos[0],
+ &interface_vtable,
+ manager,
+ NULL,
+ NULL);
+
+ manager->name_id = g_bus_own_name_on_connection (manager->connection,
+ GSD_SCREENSAVER_PROXY_DBUS_SERVICE,
+ G_BUS_NAME_OWNER_FLAGS_NONE,
+ NULL,
+ NULL,
+ NULL,
+ NULL);
+}
+
+static void
+register_manager_dbus (GsdScreensaverProxyManager *manager)
+{
+ manager->introspection_data = g_dbus_node_info_new_for_xml (introspection_xml, NULL);
+ manager->introspection_data2 = g_dbus_node_info_new_for_xml (introspection_xml2, NULL);
+ manager->bus_cancellable = g_cancellable_new ();
+ g_assert (manager->introspection_data != NULL);
+ g_assert (manager->introspection_data2 != NULL);
+
+ g_bus_get (G_BUS_TYPE_SESSION,
+ manager->bus_cancellable,
+ (GAsyncReadyCallback) on_bus_gotten,
+ manager);
+}
+
+gboolean
+gsd_screensaver_proxy_manager_start (GsdScreensaverProxyManager *manager,
+ GError **error)
+{
+ g_debug ("Starting screensaver-proxy manager");
+ gnome_settings_profile_start (NULL);
+ manager->session =
+ gnome_settings_bus_get_session_proxy ();
+ manager->watch_ht = g_hash_table_new_full (g_str_hash,
+ g_str_equal,
+ (GDestroyNotify) g_free,
+ (GDestroyNotify) g_bus_unwatch_name);
+ manager->cookie_ht = g_hash_table_new_full (g_direct_hash,
+ g_direct_equal,
+ NULL,
+ (GDestroyNotify) g_free);
+ gnome_settings_profile_end (NULL);
+ return TRUE;
+}
+
+void
+gsd_screensaver_proxy_manager_stop (GsdScreensaverProxyManager *manager)
+{
+ g_debug ("Stopping screensaver_proxy manager");
+ g_clear_object (&manager->session);
+ g_clear_pointer (&manager->watch_ht, g_hash_table_destroy);
+ g_clear_pointer (&manager->cookie_ht, g_hash_table_destroy);
+}
+
+static void
+gsd_screensaver_proxy_manager_class_init (GsdScreensaverProxyManagerClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->finalize = gsd_screensaver_proxy_manager_finalize;
+}
+
+static void
+gsd_screensaver_proxy_manager_init (GsdScreensaverProxyManager *manager)
+{
+}
+
+static void
+gsd_screensaver_proxy_manager_finalize (GObject *object)
+{
+ GsdScreensaverProxyManager *manager;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (GSD_IS_SCREENSAVER_PROXY_MANAGER (object));
+
+ manager = GSD_SCREENSAVER_PROXY_MANAGER (object);
+
+ g_return_if_fail (manager != NULL);
+
+ gsd_screensaver_proxy_manager_stop (manager);
+
+ if (manager->name_id != 0) {
+ g_bus_unown_name (manager->name_id);
+ manager->name_id = 0;
+ }
+ g_clear_object (&manager->connection);
+ g_clear_object (&manager->bus_cancellable);
+ g_clear_pointer (&manager->introspection_data, g_dbus_node_info_unref);
+ g_clear_pointer (&manager->introspection_data2, g_dbus_node_info_unref);
+
+ G_OBJECT_CLASS (gsd_screensaver_proxy_manager_parent_class)->finalize (object);
+}
+
+GsdScreensaverProxyManager *
+gsd_screensaver_proxy_manager_new (void)
+{
+ if (manager_object != NULL) {
+ g_object_ref (manager_object);
+ } else {
+ manager_object = g_object_new (GSD_TYPE_SCREENSAVER_PROXY_MANAGER, NULL);
+ g_object_add_weak_pointer (manager_object,
+ (gpointer *) &manager_object);
+ register_manager_dbus (manager_object);
+ }
+
+ return GSD_SCREENSAVER_PROXY_MANAGER (manager_object);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-03 06:03:37 +0000