moving from https://github.com/perberos/mate-desktop-environment

1 files changed, 646 insertions, 0 deletions

diff --git a/plugins/datetime/gsd-datetime-mechanism.c b/plugins/datetime/gsd-datetime-mechanism.c
new file mode 100644
index 0000000..5c18040
--- /dev/null
+++ b/plugins/datetime/gsd-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 "gsd-datetime-mechanism.h"
+#include "gsd-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 GsdDatetimeMechanismPrivate
+{
+        DBusGConnection *system_bus_connection;
+        DBusGProxy      *system_bus_proxy;
+        PolkitAuthority *auth;
+};
+
+static void     gsd_datetime_mechanism_finalize    (GObject     *object);
+
+G_DEFINE_TYPE (GsdDatetimeMechanism, gsd_datetime_mechanism, G_TYPE_OBJECT)
+
+#define GSD_DATETIME_MECHANISM_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GSD_DATETIME_TYPE_MECHANISM, GsdDatetimeMechanismPrivate))
+
+GQuark
+gsd_datetime_mechanism_error_quark (void)
+{
+        static GQuark ret = 0;
+
+        if (ret == 0) {
+                ret = g_quark_from_static_string ("gsd_datetime_mechanism_error");
+        }
+
+        return ret;
+}
+
+
+#define ENUM_ENTRY(NAME, DESC) { NAME, "" #NAME "", DESC }
+
+GType
+gsd_datetime_mechanism_error_get_type (void)
+{
+        static GType etype = 0;
+        
+        if (etype == 0)
+        {
+                static const GEnumValue values[] =
+                        {
+                                ENUM_ENTRY (GSD_DATETIME_MECHANISM_ERROR_GENERAL, "GeneralError"),
+                                ENUM_ENTRY (GSD_DATETIME_MECHANISM_ERROR_NOT_PRIVILEGED, "NotPrivileged"),
+                                ENUM_ENTRY (GSD_DATETIME_MECHANISM_ERROR_INVALID_TIMEZONE_FILE, "InvalidTimezoneFile"),
+                                { 0, 0, 0 }
+                        };
+                
+                g_assert (GSD_DATETIME_MECHANISM_NUM_ERRORS == G_N_ELEMENTS (values) - 1);
+                
+                etype = g_enum_register_static ("GsdDatetimeMechanismError", values);
+        }
+        
+        return etype;
+}
+
+
+static GObject *
+gsd_datetime_mechanism_constructor (GType                  type,
+                                    guint                  n_construct_properties,
+                                    GObjectConstructParam *construct_properties)
+{
+        GsdDatetimeMechanism      *mechanism;
+
+        mechanism = GSD_DATETIME_MECHANISM (G_OBJECT_CLASS (gsd_datetime_mechanism_parent_class)->constructor (
+                                                type,
+                                                n_construct_properties,
+                                                construct_properties));
+
+        return G_OBJECT (mechanism);
+}
+
+static void
+gsd_datetime_mechanism_class_init (GsdDatetimeMechanismClass *klass)
+{
+        GObjectClass   *object_class = G_OBJECT_CLASS (klass);
+
+        object_class->constructor = gsd_datetime_mechanism_constructor;
+        object_class->finalize = gsd_datetime_mechanism_finalize;
+
+        g_type_class_add_private (klass, sizeof (GsdDatetimeMechanismPrivate));
+
+        dbus_g_object_type_install_info (GSD_DATETIME_TYPE_MECHANISM, &dbus_glib_gsd_datetime_mechanism_object_info);
+
+        dbus_g_error_domain_register (GSD_DATETIME_MECHANISM_ERROR, NULL, GSD_DATETIME_MECHANISM_TYPE_ERROR);
+
+}
+
+static void
+gsd_datetime_mechanism_init (GsdDatetimeMechanism *mechanism)
+{
+        mechanism->priv = GSD_DATETIME_MECHANISM_GET_PRIVATE (mechanism);
+
+}
+
+static void
+gsd_datetime_mechanism_finalize (GObject *object)
+{
+        GsdDatetimeMechanism *mechanism;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GSD_DATETIME_IS_MECHANISM (object));
+
+        mechanism = GSD_DATETIME_MECHANISM (object);
+
+        g_return_if_fail (mechanism->priv != NULL);
+
+        g_object_unref (mechanism->priv->system_bus_proxy);
+
+        G_OBJECT_CLASS (gsd_datetime_mechanism_parent_class)->finalize (object);
+}
+
+static gboolean
+register_mechanism (GsdDatetimeMechanism *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;
+}
+
+
+GsdDatetimeMechanism *
+gsd_datetime_mechanism_new (void)
+{
+        GObject *object;
+        gboolean res;
+
+        object = g_object_new (GSD_DATETIME_TYPE_MECHANISM, NULL);
+
+        res = register_mechanism (GSD_DATETIME_MECHANISM (object));
+        if (! res) {
+                g_object_unref (object);
+                return NULL;
+        }
+
+        return GSD_DATETIME_MECHANISM (object);
+}
+
+static gboolean
+_check_polkit_for_action (GsdDatetimeMechanism *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 (GSD_DATETIME_MECHANISM_ERROR,
+                                     GSD_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 (GsdDatetimeMechanism  *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 (GSD_DATETIME_MECHANISM_ERROR,
+                                     GSD_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 (GSD_DATETIME_MECHANISM_ERROR,
+                                              GSD_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 (GSD_DATETIME_MECHANISM_ERROR,
+                                             GSD_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 (GSD_DATETIME_MECHANISM_ERROR,
+                                              GSD_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 (GSD_DATETIME_MECHANISM_ERROR,
+                                                      GSD_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
+gsd_datetime_mechanism_set_time (GsdDatetimeMechanism  *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
+gsd_datetime_mechanism_adjust_time (GsdDatetimeMechanism  *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 (GSD_DATETIME_MECHANISM_ERROR,
+                                     GSD_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
+gsd_datetime_mechanism_set_timezone (GsdDatetimeMechanism  *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 = GSD_DATETIME_MECHANISM_ERROR_INVALID_TIMEZONE_FILE;
+                else 
+                        code = GSD_DATETIME_MECHANISM_ERROR_GENERAL;
+
+                error2 = g_error_new (GSD_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
+gsd_datetime_mechanism_get_timezone (GsdDatetimeMechanism   *mechism,
+                                     DBusGMethodInvocation  *context)
+{
+  gchar *timezone;
+
+  reset_killtimer ();
+
+  timezone = system_timezone_find ();
+
+  dbus_g_method_return (context, timezone);
+
+  return TRUE;
+}
+
+gboolean
+gsd_datetime_mechanism_get_hardware_clock_using_utc (GsdDatetimeMechanism  *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 (GSD_DATETIME_MECHANISM_ERROR,
+                                      GSD_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 (GSD_DATETIME_MECHANISM_ERROR,
+                                     GSD_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 (GSD_DATETIME_MECHANISM_ERROR,
+                                     GSD_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
+gsd_datetime_mechanism_set_hardware_clock_using_utc (GsdDatetimeMechanism  *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 (GSD_DATETIME_MECHANISM_ERROR,
+                                              GSD_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 (GSD_DATETIME_MECHANISM_ERROR,
+                                             GSD_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 (GsdDatetimeMechanism  *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
+gsd_datetime_mechanism_can_set_time (GsdDatetimeMechanism  *mechanism,
+                                     DBusGMethodInvocation *context)
+{
+        check_can_do (mechanism,
+                      "org.mate.settingsdaemon.datetimemechanism.settime",
+                      context);
+
+        return TRUE;
+}
+
+gboolean
+gsd_datetime_mechanism_can_set_timezone (GsdDatetimeMechanism  *mechanism,
+                                         DBusGMethodInvocation *context)
+{
+        check_can_do (mechanism,
+                      "org.mate.settingsdaemon.datetimemechanism.settimezone",
+                      context);
+
+        return TRUE;
+}