1 files changed, 646 insertions, 0 deletions
diff --git a/plugins/datetime/msd-datetime-mechanism.c b/plugins/datetime/msd-datetime-mechanism.c
new file mode 100644
index 0000000..7b0d338
--- /dev/null
+++ b/plugins/datetime/msd-datetime-mechanism.c
@@ -0,0 +1,646 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2007 David Zeuthen <[email protected]>
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/wait.h>
+#include <errno.h>
+#include <sys/time.h>
+
+#include <glib.h>
+#include <glib-object.h>
+
+#include <dbus/dbus-glib.h>
+#include <dbus/dbus-glib-lowlevel.h>
+
+#include <polkit/polkit.h>
+
+#include "system-timezone.h"
+
+#include "msd-datetime-mechanism.h"
+#include "msd-datetime-mechanism-glue.h"
+
+static gboolean
+do_exit (gpointer user_data)
+{
+ g_debug ("Exiting due to inactivity");
+ exit (1);
+ return FALSE;
+}
+
+static void
+reset_killtimer (void)
+{
+ static guint timer_id = 0;
+
+ if (timer_id > 0) {
+ g_source_remove (timer_id);
+ }
+ g_debug ("Setting killtimer to 30 seconds...");
+ timer_id = g_timeout_add_seconds (30, do_exit, NULL);
+}
+
+struct MsdDatetimeMechanismPrivate
+{
+ DBusGConnection *system_bus_connection;
+ DBusGProxy *system_bus_proxy;
+ PolkitAuthority *auth;
+};
+
+static void msd_datetime_mechanism_finalize (GObject *object);
+
+G_DEFINE_TYPE (MsdDatetimeMechanism, msd_datetime_mechanism, G_TYPE_OBJECT)
+
+#define MSD_DATETIME_MECHANISM_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), MSD_DATETIME_TYPE_MECHANISM, MsdDatetimeMechanismPrivate))
+
+GQuark
+msd_datetime_mechanism_error_quark (void)
+{
+ static GQuark ret = 0;
+
+ if (ret == 0) {
+ ret = g_quark_from_static_string ("msd_datetime_mechanism_error");
+ }
+
+ return ret;
+}
+
+
+#define ENUM_ENTRY(NAME, DESC) { NAME, "" #NAME "", DESC }
+
+GType
+msd_datetime_mechanism_error_get_type (void)
+{
+ static GType etype = 0;
+ 
+ if (etype == 0)
+ {
+ static const GEnumValue values[] =
+ {
+ ENUM_ENTRY (MSD_DATETIME_MECHANISM_ERROR_GENERAL, "GeneralError"),
+ ENUM_ENTRY (MSD_DATETIME_MECHANISM_ERROR_NOT_PRIVILEGED, "NotPrivileged"),
+ ENUM_ENTRY (MSD_DATETIME_MECHANISM_ERROR_INVALID_TIMEZONE_FILE, "InvalidTimezoneFile"),
+ { 0, 0, 0 }
+ };
+ 
+ g_assert (MSD_DATETIME_MECHANISM_NUM_ERRORS == G_N_ELEMENTS (values) - 1);
+ 
+ etype = g_enum_register_static ("MsdDatetimeMechanismError", values);
+ }
+ 
+ return etype;
+}
+
+
+static GObject *
+msd_datetime_mechanism_constructor (GType type,
+ guint n_construct_properties,
+ GObjectConstructParam *construct_properties)
+{
+ MsdDatetimeMechanism *mechanism;
+
+ mechanism = MSD_DATETIME_MECHANISM (G_OBJECT_CLASS (msd_datetime_mechanism_parent_class)->constructor (
+ type,
+ n_construct_properties,
+ construct_properties));
+
+ return G_OBJECT (mechanism);
+}
+
+static void
+msd_datetime_mechanism_class_init (MsdDatetimeMechanismClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->constructor = msd_datetime_mechanism_constructor;
+ object_class->finalize = msd_datetime_mechanism_finalize;
+
+ g_type_class_add_private (klass, sizeof (MsdDatetimeMechanismPrivate));
+
+ dbus_g_object_type_install_info (MSD_DATETIME_TYPE_MECHANISM, &dbus_glib_msd_datetime_mechanism_object_info);
+
+ dbus_g_error_domain_register (MSD_DATETIME_MECHANISM_ERROR, NULL, MSD_DATETIME_MECHANISM_TYPE_ERROR);
+
+}
+
+static void
+msd_datetime_mechanism_init (MsdDatetimeMechanism *mechanism)
+{
+ mechanism->priv = MSD_DATETIME_MECHANISM_GET_PRIVATE (mechanism);
+
+}
+
+static void
+msd_datetime_mechanism_finalize (GObject *object)
+{
+ MsdDatetimeMechanism *mechanism;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (MSD_DATETIME_IS_MECHANISM (object));
+
+ mechanism = MSD_DATETIME_MECHANISM (object);
+
+ g_return_if_fail (mechanism->priv != NULL);
+
+ g_object_unref (mechanism->priv->system_bus_proxy);
+
+ G_OBJECT_CLASS (msd_datetime_mechanism_parent_class)->finalize (object);
+}
+
+static gboolean
+register_mechanism (MsdDatetimeMechanism *mechanism)
+{
+ GError *error = NULL;
+
+ mechanism->priv->auth = polkit_authority_get ();
+
+ error = NULL;
+ mechanism->priv->system_bus_connection = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error);
+ if (mechanism->priv->system_bus_connection == NULL) {
+ if (error != NULL) {
+ g_critical ("error getting system bus: %s", error->message);
+ g_error_free (error);
+ }
+ goto error;
+ }
+
+ dbus_g_connection_register_g_object (mechanism->priv->system_bus_connection, "/", 
+ G_OBJECT (mechanism));
+
+ mechanism->priv->system_bus_proxy = dbus_g_proxy_new_for_name (mechanism->priv->system_bus_connection,
+ DBUS_SERVICE_DBUS,
+ DBUS_PATH_DBUS,
+ DBUS_INTERFACE_DBUS);
+
+ reset_killtimer ();
+
+ return TRUE;
+
+error:
+ return FALSE;
+}
+
+
+MsdDatetimeMechanism *
+msd_datetime_mechanism_new (void)
+{
+ GObject *object;
+ gboolean res;
+
+ object = g_object_new (MSD_DATETIME_TYPE_MECHANISM, NULL);
+
+ res = register_mechanism (MSD_DATETIME_MECHANISM (object));
+ if (! res) {
+ g_object_unref (object);
+ return NULL;
+ }
+
+ return MSD_DATETIME_MECHANISM (object);
+}
+
+static gboolean
+_check_polkit_for_action (MsdDatetimeMechanism *mechanism, DBusGMethodInvocation *context, const char *action)
+{
+ const char *sender;
+ GError *error;
+ PolkitSubject *subject;
+ PolkitAuthorizationResult *result;
+
+ error = NULL;
+
+ /* Check that caller is privileged */
+ sender = dbus_g_method_get_sender (context);
+ subject = polkit_system_bus_name_new (sender);
+
+ result = polkit_authority_check_authorization_sync (mechanism->priv->auth,
+ subject,
+ action,
+ NULL,
+ POLKIT_CHECK_AUTHORIZATION_FLAGS_ALLOW_USER_INTERACTION,
+ NULL, &error);
+ g_object_unref (subject);
+
+ if (error) {
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+
+ return FALSE;
+ }
+
+ if (!polkit_authorization_result_get_is_authorized (result)) {
+ error = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ MSD_DATETIME_MECHANISM_ERROR_NOT_PRIVILEGED,
+ "Not Authorized for action %s", action);
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ g_object_unref (result);
+
+ return FALSE;
+ }
+
+ g_object_unref (result);
+
+ return TRUE;
+}
+
+
+static gboolean
+_set_time (MsdDatetimeMechanism *mechanism,
+ const struct timeval *tv,
+ DBusGMethodInvocation *context)
+{
+ GError *error;
+
+ if (!_check_polkit_for_action (mechanism, context, "org.mate.settingsdaemon.datetimemechanism.settime"))
+ return FALSE;
+
+ if (settimeofday (tv, NULL) != 0) {
+ error = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ MSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error calling settimeofday({%lld,%lld}): %s", 
+ (gint64) tv->tv_sec, (gint64) tv->tv_usec,
+ strerror (errno));
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ return FALSE;
+ }
+
+ if (g_file_test ("/sbin/hwclock", 
+ G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR | G_FILE_TEST_IS_EXECUTABLE)) {
+ int exit_status;
+ if (!g_spawn_command_line_sync ("/sbin/hwclock --systohc", NULL, NULL, &exit_status, &error)) {
+ GError *error2;
+ error2 = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ MSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error spawning /sbin/hwclock: %s", error->message);
+ g_error_free (error);
+ dbus_g_method_return_error (context, error2);
+ g_error_free (error2);
+ return FALSE;
+ }
+ if (WEXITSTATUS (exit_status) != 0) {
+ error = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ MSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "/sbin/hwclock returned %d", exit_status);
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ return FALSE;
+ }
+ }
+
+ dbus_g_method_return (context);
+ return TRUE;
+}
+
+static gboolean
+_rh_update_etc_sysconfig_clock (DBusGMethodInvocation *context, const char *key, const char *value)
+{
+ /* On Red Hat / Fedora, the /etc/sysconfig/clock file needs to be kept in sync */
+ if (g_file_test ("/etc/sysconfig/clock", G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR)) {
+ char **lines;
+ int n;
+ gboolean replaced;
+ char *data;
+ gsize len;
+ GError *error;
+ 
+ error = NULL;
+
+ if (!g_file_get_contents ("/etc/sysconfig/clock", &data, &len, &error)) {
+ GError *error2;
+ error2 = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ MSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error reading /etc/sysconfig/clock file: %s", error->message);
+ g_error_free (error);
+ dbus_g_method_return_error (context, error2);
+ g_error_free (error2);
+ return FALSE;
+ }
+ replaced = FALSE;
+ lines = g_strsplit (data, "\n", 0);
+ g_free (data);
+
+ for (n = 0; lines[n] != NULL; n++) {
+ if (g_str_has_prefix (lines[n], key)) {
+ g_free (lines[n]);
+ lines[n] = g_strdup_printf ("%s%s", key, value);
+ replaced = TRUE;
+ }
+ }
+ if (replaced) {
+ GString *str;
+
+ str = g_string_new (NULL);
+ for (n = 0; lines[n] != NULL; n++) {
+ g_string_append (str, lines[n]);
+ if (lines[n + 1] != NULL)
+ g_string_append_c (str, '\n');
+ }
+ data = g_string_free (str, FALSE);
+ len = strlen (data);
+ if (!g_file_set_contents ("/etc/sysconfig/clock", data, len, &error)) {
+ GError *error2;
+ error2 = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ MSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error updating /etc/sysconfig/clock: %s", error->message);
+ g_error_free (error);
+ dbus_g_method_return_error (context, error2);
+ g_error_free (error2);
+ g_free (data);
+ return FALSE;
+ }
+ g_free (data);
+ }
+ g_strfreev (lines);
+ }
+
+ return TRUE;
+}
+
+/* exported methods */
+
+gboolean
+msd_datetime_mechanism_set_time (MsdDatetimeMechanism *mechanism,
+ gint64 seconds_since_epoch,
+ DBusGMethodInvocation *context)
+{
+ struct timeval tv;
+
+ reset_killtimer ();
+ g_debug ("SetTime(%lld) called", seconds_since_epoch);
+
+ tv.tv_sec = (time_t) seconds_since_epoch;
+ tv.tv_usec = 0;
+ return _set_time (mechanism, &tv, context);
+}
+
+gboolean
+msd_datetime_mechanism_adjust_time (MsdDatetimeMechanism *mechanism,
+ gint64 seconds_to_add,
+ DBusGMethodInvocation *context)
+{
+ struct timeval tv;
+
+ reset_killtimer ();
+ g_debug ("AdjustTime(%lld) called", seconds_to_add);
+
+ if (gettimeofday (&tv, NULL) != 0) {
+ GError *error;
+ error = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ MSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error calling gettimeofday(): %s", strerror (errno));
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ return FALSE;
+ }
+
+ tv.tv_sec += (time_t) seconds_to_add;
+ return _set_time (mechanism, &tv, context); 
+}
+
+
+gboolean
+msd_datetime_mechanism_set_timezone (MsdDatetimeMechanism *mechanism,
+ const char *zone_file,
+ DBusGMethodInvocation *context)
+{
+ GError *error;
+
+ reset_killtimer ();
+ g_debug ("SetTimezone('%s') called", zone_file);
+
+ if (!_check_polkit_for_action (mechanism, context, "org.mate.settingsdaemon.datetimemechanism.settimezone"))
+ return FALSE;
+
+ error = NULL;
+
+ if (!system_timezone_set_from_file (zone_file, &error)) {
+ GError *error2;
+ int code;
+
+ if (error->code == SYSTEM_TIMEZONE_ERROR_INVALID_TIMEZONE_FILE)
+ code = MSD_DATETIME_MECHANISM_ERROR_INVALID_TIMEZONE_FILE;
+ else 
+ code = MSD_DATETIME_MECHANISM_ERROR_GENERAL;
+
+ error2 = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ code, "%s", error->message);
+
+ g_error_free (error);
+
+ dbus_g_method_return_error (context, error2);
+ g_error_free (error2);
+
+ return FALSE;
+ }
+
+ dbus_g_method_return (context);
+ return TRUE;
+}
+
+
+gboolean
+msd_datetime_mechanism_get_timezone (MsdDatetimeMechanism *mechism,
+ DBusGMethodInvocation *context)
+{
+ gchar *timezone;
+
+ reset_killtimer ();
+
+ timezone = system_timezone_find ();
+
+ dbus_g_method_return (context, timezone);
+
+ return TRUE;
+}
+
+gboolean
+msd_datetime_mechanism_get_hardware_clock_using_utc (MsdDatetimeMechanism *mechanism,
+ DBusGMethodInvocation *context)
+{
+ char **lines;
+ char *data;
+ gsize len;
+ GError *error;
+ gboolean is_utc;
+
+ error = NULL;
+
+ if (!g_file_get_contents ("/etc/adjtime", &data, &len, &error)) {
+ GError *error2;
+ error2 = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ MSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error reading /etc/adjtime file: %s", error->message);
+ g_error_free (error);
+ dbus_g_method_return_error (context, error2);
+ g_error_free (error2);
+ return FALSE;
+ }
+
+ lines = g_strsplit (data, "\n", 0);
+ g_free (data);
+
+ if (g_strv_length (lines) < 3) {
+ error = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ MSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Cannot parse /etc/adjtime");
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ g_strfreev (lines);
+ return FALSE;
+ }
+
+ if (strcmp (lines[2], "UTC") == 0) {
+ is_utc = TRUE;
+ } else if (strcmp (lines[2], "LOCAL") == 0) {
+ is_utc = FALSE;
+ } else {
+ error = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ MSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Expected UTC or LOCAL at line 3 of /etc/adjtime; found '%s'", lines[2]);
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ g_strfreev (lines);
+ return FALSE;
+ }
+ g_strfreev (lines);
+ dbus_g_method_return (context, is_utc);
+ return TRUE;
+}
+
+gboolean
+msd_datetime_mechanism_set_hardware_clock_using_utc (MsdDatetimeMechanism *mechanism,
+ gboolean using_utc,
+ DBusGMethodInvocation *context)
+{
+ GError *error;
+
+ error = NULL;
+
+ if (!_check_polkit_for_action (mechanism, context,
+ "org.mate.settingsdaemon.datetimemechanism.configurehwclock"))
+ return FALSE;
+
+ if (g_file_test ("/sbin/hwclock", 
+ G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR | G_FILE_TEST_IS_EXECUTABLE)) {
+ int exit_status;
+ char *cmd;
+ cmd = g_strdup_printf ("/sbin/hwclock %s --systohc", using_utc ? "--utc" : "--localtime");
+ if (!g_spawn_command_line_sync (cmd, NULL, NULL, &exit_status, &error)) {
+ GError *error2;
+ error2 = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ MSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "Error spawning /sbin/hwclock: %s", error->message);
+ g_error_free (error);
+ dbus_g_method_return_error (context, error2);
+ g_error_free (error2);
+ g_free (cmd);
+ return FALSE;
+ }
+ g_free (cmd);
+ if (WEXITSTATUS (exit_status) != 0) {
+ error = g_error_new (MSD_DATETIME_MECHANISM_ERROR,
+ MSD_DATETIME_MECHANISM_ERROR_GENERAL,
+ "/sbin/hwclock returned %d", exit_status);
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ return FALSE;
+ }
+
+ if (!_rh_update_etc_sysconfig_clock (context, "UTC=", using_utc ? "true" : "false"))
+ return FALSE;
+
+ }
+ dbus_g_method_return (context);
+ return TRUE;
+}
+
+static void
+check_can_do (MsdDatetimeMechanism *mechanism,
+ const char *action,
+ DBusGMethodInvocation *context)
+{
+ const char *sender;
+ PolkitSubject *subject;
+ PolkitAuthorizationResult *result;
+ GError *error;
+
+ /* Check that caller is privileged */
+ sender = dbus_g_method_get_sender (context);
+ subject = polkit_system_bus_name_new (sender);
+
+ error = NULL;
+ result = polkit_authority_check_authorization_sync (mechanism->priv->auth,
+ subject,
+ action,
+ NULL,
+ 0,
+ NULL,
+ &error);
+ g_object_unref (subject);
+
+ if (error) {
+ dbus_g_method_return_error (context, error);
+ g_error_free (error);
+ return;
+ }
+
+ if (polkit_authorization_result_get_is_authorized (result)) {
+ dbus_g_method_return (context, 2);
+ }
+ else if (polkit_authorization_result_get_is_challenge (result)) {
+ dbus_g_method_return (context, 1);
+ }
+ else {
+ dbus_g_method_return (context, 0);
+ }
+
+ g_object_unref (result);
+}
+
+
+gboolean
+msd_datetime_mechanism_can_set_time (MsdDatetimeMechanism *mechanism,
+ DBusGMethodInvocation *context)
+{
+ check_can_do (mechanism,
+ "org.mate.settingsdaemon.datetimemechanism.settime",
+ context);
+
+ return TRUE;
+}
+
+gboolean
+msd_datetime_mechanism_can_set_timezone (MsdDatetimeMechanism *mechanism,
+ DBusGMethodInvocation *context)
+{
+ check_can_do (mechanism,
+ "org.mate.settingsdaemon.datetimemechanism.settimezone",
+ context);
+
+ return TRUE;
+}