diff options
Diffstat (limited to 'plugins/datetime')
| -rw-r--r-- | plugins/datetime/Makefile.am | 60 | ||||
| -rw-r--r-- | plugins/datetime/Makefile.in | 719 | ||||
| -rw-r--r-- | plugins/datetime/gsd-datetime-mechanism-main.c | 171 | ||||
| -rw-r--r-- | plugins/datetime/gsd-datetime-mechanism.c | 646 | ||||
| -rw-r--r-- | plugins/datetime/gsd-datetime-mechanism.h | 101 | ||||
| -rw-r--r-- | plugins/datetime/gsd-datetime-mechanism.xml | 87 | ||||
| -rw-r--r-- | plugins/datetime/org.mate.SettingsDaemon.DateTimeMechanism.conf | 19 | ||||
| -rw-r--r-- | plugins/datetime/org.mate.SettingsDaemon.DateTimeMechanism.service.in | 4 | ||||
| -rw-r--r-- | plugins/datetime/org.mate.settingsdaemon.datetimemechanism.policy.in | 38 | ||||
| -rw-r--r-- | plugins/datetime/system-timezone.c | 1047 | ||||
| -rw-r--r-- | plugins/datetime/system-timezone.h | 89 |
11 files changed, 2981 insertions, 0 deletions
diff --git a/plugins/datetime/Makefile.am b/plugins/datetime/Makefile.am new file mode 100644 index 0000000..1ae28f7 --- /dev/null +++ b/plugins/datetime/Makefile.am @@ -0,0 +1,60 @@ +dbus_servicesdir = $(datadir)/dbus-1/system-services +dbus_confdir = $(sysconfdir)/dbus-1/system.d +polkitdir = $(datadir)/polkit-1/actions + +dbus_services_in_files = org.mate.SettingsDaemon.DateTimeMechanism.service.in +polkit_in_files = org.mate.settingsdaemon.datetimemechanism.policy.in + +gsd-datetime-mechanism-glue.h: $(srcdir)/gsd-datetime-mechanism.xml + $(AM_V_GEN)dbus-binding-tool \ + --prefix=gsd_datetime_mechanism --mode=glib-server \ + --output=gsd-datetime-mechanism-glue.h \ + $(srcdir)/gsd-datetime-mechanism.xml + +if HAVE_POLKIT +libexec_PROGRAMS = gsd-datetime-mechanism +endif + +gsd_datetime_mechanism_SOURCES = \ + gsd-datetime-mechanism.c \ + gsd-datetime-mechanism.h \ + gsd-datetime-mechanism-main.c \ + system-timezone.c \ + system-timezone.h + + +if HAVE_POLKIT +BUILT_SOURCES = gsd-datetime-mechanism-glue.h +endif + +AM_CFLAGS = $(SETTINGS_PLUGIN_CFLAGS) $(POLKIT_CFLAGS) +gsd_datetime_mechanism_LDADD = $(POLKIT_LIBS) $(SETTINGS_PLUGIN_LIBS) + + +if HAVE_POLKIT +dbus_services_DATA = $(dbus_services_in_files:.service.in=.service) + +$(dbus_services_DATA): $(dbus_services_in_files) + $(AM_V_GEN)sed -e "s|\@LIBEXECDIR\@|$(libexecdir)|" $< > $@ + +dbus_conf_DATA = org.mate.SettingsDaemon.DateTimeMechanism.conf + +@INTLTOOL_POLICY_RULE@ +polkit_DATA = $(polkit_in_files:.policy.in=.policy) + +else +dbus_services_DATA = +dbus_conf_DATA = +polkit_DATA = +endif + +EXTRA_DIST = \ + $(dbus_services_in_files) \ + org.mate.SettingsDaemon.DateTimeMechanism.conf \ + $(polkit_in_files) \ + gsd-datetime-mechanism.xml + +CLEANFILES = \ + org.mate.SettingsDaemon.DateTimeMechanism.service \ + org.mate.settingsdaemon.datetimemechanism.policy \ + $(BUILT_SOURCES)
\ No newline at end of file diff --git a/plugins/datetime/Makefile.in b/plugins/datetime/Makefile.in new file mode 100644 index 0000000..ab5da48 --- /dev/null +++ b/plugins/datetime/Makefile.in @@ -0,0 +1,719 @@ +# Makefile.in generated by automake 1.11.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = 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+@HAVE_POLKIT_TRUE@ $(AM_V_GEN)sed -e "s|\@LIBEXECDIR\@|$(libexecdir)|" $< > $@ + +@HAVE_POLKIT_TRUE@@INTLTOOL_POLICY_RULE@ + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/datetime/gsd-datetime-mechanism-main.c b/plugins/datetime/gsd-datetime-mechanism-main.c new file mode 100644 index 0000000..7d6089f --- /dev/null +++ b/plugins/datetime/gsd-datetime-mechanism-main.c @@ -0,0 +1,171 @@ +/* -*- 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 <unistd.h> +#include <signal.h> +#include <errno.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + +#include <glib.h> +#include <glib-object.h> + +#include <dbus/dbus-glib.h> +#include <dbus/dbus-glib-lowlevel.h> + + +#include "gsd-datetime-mechanism.h" + +static DBusGProxy * +get_bus_proxy (DBusGConnection *connection) +{ + DBusGProxy *bus_proxy; + + bus_proxy = dbus_g_proxy_new_for_name (connection, + DBUS_SERVICE_DBUS, + DBUS_PATH_DBUS, + DBUS_INTERFACE_DBUS); + return bus_proxy; +} + +#define BUS_NAME "org.mate.SettingsDaemon.DateTimeMechanism" + +static gboolean +acquire_name_on_proxy (DBusGProxy *bus_proxy) +{ + GError *error; + guint result; + gboolean res; + gboolean ret; + + ret = FALSE; + + if (bus_proxy == NULL) { + goto out; + } + + error = NULL; + res = dbus_g_proxy_call (bus_proxy, + "RequestName", + &error, + G_TYPE_STRING, BUS_NAME, + G_TYPE_UINT, 0, + G_TYPE_INVALID, + G_TYPE_UINT, &result, + G_TYPE_INVALID); + if (! res) { + if (error != NULL) { + g_warning ("Failed to acquire %s: %s", BUS_NAME, error->message); + g_error_free (error); + } else { + g_warning ("Failed to acquire %s", BUS_NAME); + } + goto out; + } + + if (result != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) { + if (error != NULL) { + g_warning ("Failed to acquire %s: %s", BUS_NAME, error->message); + g_error_free (error); + } else { + g_warning ("Failed to acquire %s", BUS_NAME); + } + goto out; + } + + ret = TRUE; + + out: + return ret; +} + +static DBusGConnection * +get_system_bus (void) +{ + GError *error; + DBusGConnection *bus; + + error = NULL; + bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error); + if (bus == NULL) { + g_warning ("Couldn't connect to system bus: %s", error->message); + g_error_free (error); + } + return bus; +} + +int +main (int argc, char **argv) +{ + GMainLoop *loop; + GsdDatetimeMechanism *mechanism; + DBusGProxy *bus_proxy; + DBusGConnection *connection; + int ret; + + ret = 1; + + if (! g_thread_supported ()) { + g_thread_init (NULL); + } + dbus_g_thread_init (); + g_type_init (); + + connection = get_system_bus (); + if (connection == NULL) { + goto out; + } + + bus_proxy = get_bus_proxy (connection); + if (bus_proxy == NULL) { + g_warning ("Could not construct bus_proxy object; bailing out"); + goto out; + } + + if (!acquire_name_on_proxy (bus_proxy) ) { + g_warning ("Could not acquire name; bailing out"); + goto out; + } + + mechanism = gsd_datetime_mechanism_new (); + + if (mechanism == NULL) { + goto out; + } + + loop = g_main_loop_new (NULL, FALSE); + + g_main_loop_run (loop); + + g_object_unref (mechanism); + g_main_loop_unref (loop); + ret = 0; + +out: + return ret; +} 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; +} diff --git a/plugins/datetime/gsd-datetime-mechanism.h b/plugins/datetime/gsd-datetime-mechanism.h new file mode 100644 index 0000000..52b3b02 --- /dev/null +++ b/plugins/datetime/gsd-datetime-mechanism.h @@ -0,0 +1,101 @@ +/* -*- 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. + * + */ + +#ifndef GSD_DATETIME_MECHANISM_H +#define GSD_DATETIME_MECHANISM_H + +#include <glib-object.h> +#include <dbus/dbus-glib.h> + +#ifdef __cplusplus +extern "C" { +#endif + +#define GSD_DATETIME_TYPE_MECHANISM (gsd_datetime_mechanism_get_type ()) +#define GSD_DATETIME_MECHANISM(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GSD_DATETIME_TYPE_MECHANISM, GsdDatetimeMechanism)) +#define GSD_DATETIME_MECHANISM_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), GSD_DATETIME_TYPE_MECHANISM, GsdDatetimeMechanismClass)) +#define GSD_DATETIME_IS_MECHANISM(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GSD_DATETIME_TYPE_MECHANISM)) +#define GSD_DATETIME_IS_MECHANISM_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GSD_DATETIME_TYPE_MECHANISM)) +#define GSD_DATETIME_MECHANISM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GSD_DATETIME_TYPE_MECHANISM, GsdDatetimeMechanismClass)) + +typedef struct GsdDatetimeMechanismPrivate GsdDatetimeMechanismPrivate; + +typedef struct +{ + GObject parent; + GsdDatetimeMechanismPrivate *priv; +} GsdDatetimeMechanism; + +typedef struct +{ + GObjectClass parent_class; +} GsdDatetimeMechanismClass; + +typedef enum +{ + GSD_DATETIME_MECHANISM_ERROR_GENERAL, + GSD_DATETIME_MECHANISM_ERROR_NOT_PRIVILEGED, + GSD_DATETIME_MECHANISM_ERROR_INVALID_TIMEZONE_FILE, + GSD_DATETIME_MECHANISM_NUM_ERRORS +} GsdDatetimeMechanismError; + +#define GSD_DATETIME_MECHANISM_ERROR gsd_datetime_mechanism_error_quark () + +GType gsd_datetime_mechanism_error_get_type (void); +#define GSD_DATETIME_MECHANISM_TYPE_ERROR (gsd_datetime_mechanism_error_get_type ()) + + +GQuark gsd_datetime_mechanism_error_quark (void); +GType gsd_datetime_mechanism_get_type (void); +GsdDatetimeMechanism *gsd_datetime_mechanism_new (void); + +/* exported methods */ +gboolean gsd_datetime_mechanism_get_timezone (GsdDatetimeMechanism *mechanism, + DBusGMethodInvocation *context); +gboolean gsd_datetime_mechanism_set_timezone (GsdDatetimeMechanism *mechanism, + const char *zone_file, + DBusGMethodInvocation *context); + +gboolean gsd_datetime_mechanism_can_set_timezone (GsdDatetimeMechanism *mechanism, + DBusGMethodInvocation *context); + +gboolean gsd_datetime_mechanism_set_time (GsdDatetimeMechanism *mechanism, + gint64 seconds_since_epoch, + DBusGMethodInvocation *context); + +gboolean gsd_datetime_mechanism_can_set_time (GsdDatetimeMechanism *mechanism, + DBusGMethodInvocation *context); + +gboolean gsd_datetime_mechanism_adjust_time (GsdDatetimeMechanism *mechanism, + gint64 seconds_to_add, + DBusGMethodInvocation *context); + +gboolean gsd_datetime_mechanism_get_hardware_clock_using_utc (GsdDatetimeMechanism *mechanism, + DBusGMethodInvocation *context); + +gboolean gsd_datetime_mechanism_set_hardware_clock_using_utc (GsdDatetimeMechanism *mechanism, + gboolean using_utc, + DBusGMethodInvocation *context); + +#ifdef __cplusplus +} +#endif + +#endif /* GSD_DATETIME_MECHANISM_H */ diff --git a/plugins/datetime/gsd-datetime-mechanism.xml b/plugins/datetime/gsd-datetime-mechanism.xml new file mode 100644 index 0000000..1962235 --- /dev/null +++ b/plugins/datetime/gsd-datetime-mechanism.xml @@ -0,0 +1,87 @@ +<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd"> +<node name="/"> + <interface name="org.mate.SettingsDaemon.DateTimeMechanism"> + <method name="SetTimezone"> + <annotation name="org.freedesktop.DBus.GLib.Async" value=""/> + <arg name="zonefile" direction="in" type="s"/> + </method> + + <method name="GetTimezone"> + <annotation name="org.freedesktop.DBus.GLib.Async" value=""/> + <arg name="timezone" direction="out" type="s"/> + </method> + + <method name="CanSetTimezone"> + <annotation name="org.freedesktop.DBus.GLib.Async" value=""/> + <arg name="value" direction="out" type="i"> + <doc:doc> + <doc:summary>Whether the caller can set the timezone</doc:summary> + <doc:description> + <doc:para> + The return value is not a boolean, but an integer with the following meaning: + <doc:list> + <doc:item> + <doc:term>0</doc:term> + <doc:definition>the caller cannot set the timezone</doc:definition> + </doc:item> + <doc:item> + <doc:term>1</doc:term> + <doc:definition>the caller will be challenged before being able to set the timezone</doc:definition> + </doc:item> + <doc:item> + <doc:term>2</doc:term> + <doc:definition>the caller is authorized to set the timezone</doc:definition> + </doc:item> + </doc:list> + </doc:para> + </doc:description> + </doc:doc> + </arg> + </method> + <method name="SetTime"> + <annotation name="org.freedesktop.DBus.GLib.Async" value=""/> + <arg name="seconds_since_epoch" direction="in" type="x"/> + </method> + <method name="CanSetTime"> + <annotation name="org.freedesktop.DBus.GLib.Async" value=""/> + <arg name="value" direction="out" type="i"> + <doc:doc> + <doc:summary>Whether the caller can set the time</doc:summary> + <doc:description> + <doc:para> + The return value is not a boolean, but an integer with the following meaning: + <doc:list> + <doc:item> + <doc:term>0</doc:term> + <doc:definition>the caller cannot set the time</doc:definition> + </doc:item> + <doc:item> + <doc:term>1</doc:term> + <doc:definition>the caller will be challenged before being able to set the time</doc:definition> + </doc:item> + <doc:item> + <doc:term>2</doc:term> + <doc:definition>the caller is authorized to set the time</doc:definition> + </doc:item> + </doc:list> + </doc:para> + </doc:description> + </doc:doc> + </arg> + </method> + <method name="AdjustTime"> + <annotation name="org.freedesktop.DBus.GLib.Async" value=""/> + <arg name="seconds_to_add" direction="in" type="x"/> + </method> + + <method name="GetHardwareClockUsingUtc"> + <annotation name="org.freedesktop.DBus.GLib.Async" value=""/> + <arg name="is_using_utc" direction="out" type="b"/> + </method> + <method name="SetHardwareClockUsingUtc"> + <annotation name="org.freedesktop.DBus.GLib.Async" value=""/> + <arg name="is_using_utc" direction="in" type="b"/> + </method> + + </interface> +</node> diff --git a/plugins/datetime/org.mate.SettingsDaemon.DateTimeMechanism.conf b/plugins/datetime/org.mate.SettingsDaemon.DateTimeMechanism.conf new file mode 100644 index 0000000..c861ace --- /dev/null +++ b/plugins/datetime/org.mate.SettingsDaemon.DateTimeMechanism.conf @@ -0,0 +1,19 @@ +<?xml version="1.0" encoding="UTF-8"?> <!-- -*- XML -*- --> + +<!DOCTYPE busconfig PUBLIC + "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN" + "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd"> +<busconfig> + + <!-- Only root can own the service --> + <policy user="root"> + <allow own="org.mate.SettingsDaemon.DateTimeMechanism"/> + <allow send_destination="org.mate.SettingsDaemon.DateTimeMechanism"/> + </policy> + + <!-- Allow anyone to invoke methods on the interfaces --> + <policy context="default"> + <allow send_destination="org.mate.SettingsDaemon.DateTimeMechanism"/> + </policy> + +</busconfig> diff --git a/plugins/datetime/org.mate.SettingsDaemon.DateTimeMechanism.service.in b/plugins/datetime/org.mate.SettingsDaemon.DateTimeMechanism.service.in new file mode 100644 index 0000000..ac7fa29 --- /dev/null +++ b/plugins/datetime/org.mate.SettingsDaemon.DateTimeMechanism.service.in @@ -0,0 +1,4 @@ +[D-BUS Service] +Name=org.mate.SettingsDaemon.DateTimeMechanism +Exec=@LIBEXECDIR@/gsd-datetime-mechanism +User=root diff --git a/plugins/datetime/org.mate.settingsdaemon.datetimemechanism.policy.in b/plugins/datetime/org.mate.settingsdaemon.datetimemechanism.policy.in new file mode 100644 index 0000000..3fb688e --- /dev/null +++ b/plugins/datetime/org.mate.settingsdaemon.datetimemechanism.policy.in @@ -0,0 +1,38 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE policyconfig PUBLIC + "-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN" + "http://www.freedesktop.org/standards/PolicyKit/1.0/policyconfig.dtd"> + +<policyconfig> + <vendor>The MATE Project</vendor> + <vendor_url>http://www.gnome.org/</vendor_url> + <icon_name>mate-panel-clock</icon_name> + + <action id="org.mate.settingsdaemon.datetimemechanism.settimezone"> + <_description>Change system time zone</_description> + <_message>Privileges are required to change the system time zone.</_message> + <defaults> + <allow_inactive>no</allow_inactive> + <allow_active>auth_self_keep</allow_active> + </defaults> + </action> + + <action id="org.mate.settingsdaemon.datetimemechanism.settime"> + <_description>Change system time</_description> + <_message>Privileges are required to change the system time.</_message> + <defaults> + <allow_inactive>no</allow_inactive> + <allow_active>auth_admin_keep</allow_active> + </defaults> + </action> + + <action id="org.mate.settingsdaemon.datetimemechanism.configurehwclock"> + <_description>Configure hardware clock</_description> + <_message>Privileges are required to configure the hardware clock.</_message> + <defaults> + <allow_inactive>no</allow_inactive> + <allow_active>auth_admin_keep</allow_active> + </defaults> + </action> + +</policyconfig> diff --git a/plugins/datetime/system-timezone.c b/plugins/datetime/system-timezone.c new file mode 100644 index 0000000..43add01 --- /dev/null +++ b/plugins/datetime/system-timezone.c @@ -0,0 +1,1047 @@ +/* System timezone handling + * + * Copyright (C) 2008 Novell, Inc. + * + * Authors: Vincent Untz <[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. + * + * Some code is based on previous code in clock-location.c and on code from + * tz.c (shipped with version <= 2.22.0). Those files were under the same + * license, with those authors and copyrights: + * + * clock-location.c: + * ================ + * No header, but most of the work was done (AFAIK) by + * Federico Mena Quintero <[email protected]> + * Matthias Clasen <[email protected]> + * + * tz.c: + * ==== + * Copyright (C) 2000-2001 Ximian, Inc. + * Copyright (C) 2004 Sun Microsystems, Inc. + * + * Authors: Hans Petter Jansson <[email protected]> + * additional functions by Erwann Chenede <[email protected]> + * reworked by Vincent Untz <[email protected]> + * + * Largely based on Michael Fulbright's work on Anaconda. + */ + +/* FIXME: it'd be nice to filter out the timezones that we might get when + * parsing config files that are not in zone.tab. Note that it's also wrong + * in some cases: eg, in tzdata2008b, Asia/Calcutta got renamed to + * Asia/Kolkata and the old name is not in zone.tab. */ + +#include <string.h> +#include <unistd.h> + +#include <glib.h> +#include <glib/gstdio.h> +#include <gio/gio.h> + +#include "system-timezone.h" + +/* Files that we look at and that should be monitored */ +#define CHECK_NB 5 +#define ETC_TIMEZONE "/etc/timezone" +#define ETC_TIMEZONE_MAJ "/etc/TIMEZONE" +#define ETC_RC_CONF "/etc/rc.conf" +#define ETC_SYSCONFIG_CLOCK "/etc/sysconfig/clock" +#define ETC_CONF_D_CLOCK "/etc/conf.d/clock" +#define ETC_LOCALTIME "/etc/localtime" + +/* The first 4 characters in a timezone file, from tzfile.h */ +#define TZ_MAGIC "TZif" + +static char *files_to_check[CHECK_NB] = { + ETC_TIMEZONE, + ETC_TIMEZONE_MAJ, + ETC_SYSCONFIG_CLOCK, + ETC_CONF_D_CLOCK, + ETC_LOCALTIME +}; + +static GObject *systz_singleton = NULL; + +G_DEFINE_TYPE (SystemTimezone, system_timezone, G_TYPE_OBJECT) + +typedef struct { + char *tz; + char *env_tz; + GFileMonitor *monitors[CHECK_NB]; +} SystemTimezonePrivate; + +enum { + CHANGED, + LAST_SIGNAL +}; + +static guint system_timezone_signals[LAST_SIGNAL] = { 0 }; + +static GObject *system_timezone_constructor (GType type, + guint n_construct_properties, + GObjectConstructParam *construct_properties); +static void system_timezone_finalize (GObject *obj); + +static void system_timezone_monitor_changed (GFileMonitor *handle, + GFile *file, + GFile *other_file, + GFileMonitorEvent event, + gpointer user_data); + +#define PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), SYSTEM_TIMEZONE_TYPE, SystemTimezonePrivate)) + +SystemTimezone * +system_timezone_new (void) +{ + return g_object_new (SYSTEM_TIMEZONE_TYPE, NULL); +} + +const char * +system_timezone_get (SystemTimezone *systz) +{ + SystemTimezonePrivate *priv; + + g_return_val_if_fail (IS_SYSTEM_TIMEZONE (systz), NULL); + + priv = PRIVATE (systz); + return priv->tz; +} + +const char * +system_timezone_get_env (SystemTimezone *systz) +{ + SystemTimezonePrivate *priv; + + g_return_val_if_fail (IS_SYSTEM_TIMEZONE (systz), NULL); + + priv = PRIVATE (systz); + return priv->env_tz; +} + +static void +system_timezone_class_init (SystemTimezoneClass *class) +{ + GObjectClass *g_obj_class = G_OBJECT_CLASS (class); + + g_obj_class->constructor = system_timezone_constructor; + g_obj_class->finalize = system_timezone_finalize; + + system_timezone_signals[CHANGED] = + g_signal_new ("changed", + G_OBJECT_CLASS_TYPE (g_obj_class), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (SystemTimezoneClass, changed), + NULL, NULL, + g_cclosure_marshal_VOID__STRING, + G_TYPE_NONE, 1, G_TYPE_STRING); + + g_type_class_add_private (class, sizeof (SystemTimezonePrivate)); +} + +static void +system_timezone_init (SystemTimezone *systz) +{ + int i; + SystemTimezonePrivate *priv = PRIVATE (systz); + + priv->tz = NULL; + priv->env_tz = NULL; + for (i = 0; i < CHECK_NB; i++) + priv->monitors[i] = NULL; +} + +static GObject * +system_timezone_constructor (GType type, + guint n_construct_properties, + GObjectConstructParam *construct_properties) +{ + GObject *obj; + SystemTimezonePrivate *priv; + int i; + + /* This is a singleton, we don't need to have it per-applet */ + if (systz_singleton) + return g_object_ref (systz_singleton); + + obj = G_OBJECT_CLASS (system_timezone_parent_class)->constructor ( + type, + n_construct_properties, + construct_properties); + + priv = PRIVATE (obj); + + priv->tz = system_timezone_find (); + + priv->env_tz = g_strdup (g_getenv ("TZ")); + + for (i = 0; i < CHECK_NB; i++) { + GFile *file; + GFile *parent; + GFileType parent_type; + + file = g_file_new_for_path (files_to_check[i]); + + parent = g_file_get_parent (file); + parent_type = g_file_query_file_type (parent, G_FILE_QUERY_INFO_NONE, NULL); + g_object_unref (parent); + + /* We don't try to monitor the file if the parent directory + * doesn't exist: this means we're on a system where this file + * is not useful to determine the system timezone. + * Since gio does not monitor file in non-existing directories + * in a clever way (as of gio 2.22, it just polls every other + * seconds to see if the directory now exists), this avoids + * unnecessary wakeups. */ + if (parent_type == G_FILE_TYPE_DIRECTORY) + priv->monitors[i] = g_file_monitor_file (file, + G_FILE_MONITOR_NONE, + NULL, NULL); + g_object_unref (file); + + if (priv->monitors[i]) + g_signal_connect (G_OBJECT (priv->monitors[i]), + "changed", + G_CALLBACK (system_timezone_monitor_changed), + obj); + } + + systz_singleton = obj; + + return systz_singleton; +} + +static void +system_timezone_finalize (GObject *obj) +{ + int i; + SystemTimezonePrivate *priv = PRIVATE (obj); + + if (priv->tz) { + g_free (priv->tz); + priv->tz = NULL; + } + + if (priv->env_tz) { + g_free (priv->env_tz); + priv->env_tz = NULL; + } + + for (i = 0; i < CHECK_NB; i++) { + if (priv->monitors[i]) + g_object_unref (priv->monitors[i]); + priv->monitors[i] = NULL; + } + + G_OBJECT_CLASS (system_timezone_parent_class)->finalize (obj); + + g_assert (obj == systz_singleton); + + systz_singleton = NULL; +} + +static void +system_timezone_monitor_changed (GFileMonitor *handle, + GFile *file, + GFile *other_file, + GFileMonitorEvent event, + gpointer user_data) +{ + SystemTimezonePrivate *priv = PRIVATE (user_data); + char *new_tz; + + if (event != G_FILE_MONITOR_EVENT_CHANGED && + event != G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT && + event != G_FILE_MONITOR_EVENT_DELETED && + event != G_FILE_MONITOR_EVENT_CREATED) + return; + + new_tz = system_timezone_find (); + + g_assert (priv->tz != NULL && new_tz != NULL); + + if (strcmp (priv->tz, new_tz) != 0) { + g_free (priv->tz); + priv->tz = new_tz; + + g_signal_emit (G_OBJECT (user_data), + system_timezone_signals[CHANGED], + 0, priv->tz); + } else + g_free (new_tz); +} + + +/* + * Code to deal with the system timezone on all distros. + * There's no dependency on the SystemTimezone GObject here. + * + * Here's what we know: + * + * + /etc/localtime contains the binary data of the timezone. + * It can be a symlink to the actual data file, a hard link to the data + * file, or just a copy. So we can determine the timezone with this + * (reading the symlink, comparing inodes, or comparing content). + * + * + However, most distributions also have the timezone setting + * configured somewhere else. This might be better to read it from there. + * + * Debian/Ubuntu/Gentoo (new): content of /etc/timezone + * Fedora/Mandriva: the ZONE key in /etc/sysconfig/clock + * openSUSE: the TIMEZONE key in /etc/sysconfig/clock + * Solaris/OpenSolaris: the TZ key in /etc/TIMEZONE + * Arch Linux: the TIMEZONE key in /etc/rc.conf + * Gentoo (old): the ZONE key in /etc/conf.d/clock + * + * FIXME: reading the system-tools-backends, it seems there's this too: + * Solaris: the TZ key in /etc/default/init + * /etc/TIMEZONE seems to be a link to /etc/default/init + * + * First, some functions to handle those system config files. + * + */ + +/* This works for Debian and derivatives (including Ubuntu), and new Gentoo */ +static char * +system_timezone_read_etc_timezone (void) +{ + FILE *etc_timezone; + GString *reading; + int c; + + etc_timezone = g_fopen (ETC_TIMEZONE, "r"); + if (!etc_timezone) + return NULL; + + reading = g_string_new (""); + + c = fgetc (etc_timezone); + /* only get the first line, we'll validate the value later */ + while (c != EOF && !g_ascii_isspace (c)) { + reading = g_string_append_c (reading, c); + c = fgetc (etc_timezone); + } + + fclose (etc_timezone); + + if (reading->str && reading->str[0] != '\0') + return g_string_free (reading, FALSE); + else + g_string_free (reading, TRUE); + + return NULL; +} + +static gboolean +system_timezone_write_etc_timezone (const char *tz, + GError **error) +{ + char *content; + GError *our_error; + gboolean retval; + + if (!g_file_test (ETC_TIMEZONE, G_FILE_TEST_IS_REGULAR)) + return TRUE; + + content = g_strdup_printf ("%s\n", tz); + + our_error = NULL; + retval = g_file_set_contents (ETC_TIMEZONE, content, -1, &our_error); + g_free (content); + + if (!retval) { + g_set_error (error, SYSTEM_TIMEZONE_ERROR, + SYSTEM_TIMEZONE_ERROR_GENERAL, + ETC_TIMEZONE" cannot be overwritten: %s", + our_error->message); + g_error_free (our_error); + } + + return retval; +} + + +/* Read a file that looks like a key-file (but there's no need for groups) + * and get the last value for a specific key */ +static char * +system_timezone_read_key_file (const char *filename, + const char *key) +{ + GIOChannel *channel; + char *key_eq; + char *line; + char *retval; + + if (!g_file_test (filename, G_FILE_TEST_IS_REGULAR)) + return NULL; + + channel = g_io_channel_new_file (filename, "r", NULL); + if (!channel) + return NULL; + + key_eq = g_strdup_printf ("%s=", key); + retval = NULL; + + while (g_io_channel_read_line (channel, &line, NULL, + NULL, NULL) == G_IO_STATUS_NORMAL) { + if (g_str_has_prefix (line, key_eq)) { + char *value; + int len; + + value = line + strlen (key_eq); + g_strstrip (value); + + len = strlen (value); + + if (value[0] == '\"') { + if (value[len - 1] == '\"') { + if (retval) + g_free (retval); + + retval = g_strndup (value + 1, + len - 2); + } + } else { + if (retval) + g_free (retval); + + retval = g_strdup (line + strlen (key_eq)); + } + + g_strstrip (retval); + } + + g_free (line); + } + + g_free (key_eq); + g_io_channel_unref (channel); + + return retval; +} + +static gboolean +system_timezone_write_key_file (const char *filename, + const char *key, + const char *value, + GError **error) +{ + GError *our_error; + char *content; + gsize len; + char *key_eq; + char **lines; + gboolean replaced; + gboolean retval; + int n; + + if (!g_file_test (filename, G_FILE_TEST_IS_REGULAR)) + return TRUE; + + our_error = NULL; + + if (!g_file_get_contents (filename, &content, &len, &our_error)) { + g_set_error (error, SYSTEM_TIMEZONE_ERROR, + SYSTEM_TIMEZONE_ERROR_GENERAL, + "%s cannot be read: %s", + filename, our_error->message); + g_error_free (our_error); + return FALSE; + } + + lines = g_strsplit (content, "\n", 0); + g_free (content); + + key_eq = g_strdup_printf ("%s=", key); + replaced = FALSE; + + for (n = 0; lines[n] != NULL; n++) { + if (g_str_has_prefix (lines[n], key_eq)) { + char *old_value; + gboolean use_quotes; + + old_value = lines[n] + strlen (key_eq); + g_strstrip (old_value); + use_quotes = old_value[0] == '\"'; + + g_free (lines[n]); + + if (use_quotes) + lines[n] = g_strdup_printf ("%s\"%s\"", + key_eq, value); + else + lines[n] = g_strdup_printf ("%s%s", + key_eq, value); + + replaced = TRUE; + } + } + + g_free (key_eq); + + if (!replaced) { + g_strfreev (lines); + return TRUE; + } + + content = g_strjoinv ("\n", lines); + g_strfreev (lines); + + retval = g_file_set_contents (filename, content, -1, &our_error); + g_free (content); + + if (!retval) { + g_set_error (error, SYSTEM_TIMEZONE_ERROR, + SYSTEM_TIMEZONE_ERROR_GENERAL, + "%s cannot be overwritten: %s", + filename, our_error->message); + g_error_free (our_error); + } + + return retval; +} + +/* This works for Solaris/OpenSolaris */ +static char * +system_timezone_read_etc_TIMEZONE (void) +{ + return system_timezone_read_key_file (ETC_TIMEZONE_MAJ, + "TZ"); +} + +static gboolean +system_timezone_write_etc_TIMEZONE (const char *tz, + GError **error) +{ + return system_timezone_write_key_file (ETC_TIMEZONE_MAJ, + "TZ", tz, error); +} + +/* This works for Fedora and Mandriva */ +static char * +system_timezone_read_etc_sysconfig_clock (void) +{ + return system_timezone_read_key_file (ETC_SYSCONFIG_CLOCK, + "ZONE"); +} + +static gboolean +system_timezone_write_etc_sysconfig_clock (const char *tz, + GError **error) +{ + return system_timezone_write_key_file (ETC_SYSCONFIG_CLOCK, + "ZONE", tz, error); +} + +/* This works for openSUSE */ +static char * +system_timezone_read_etc_sysconfig_clock_alt (void) +{ + return system_timezone_read_key_file (ETC_SYSCONFIG_CLOCK, + "TIMEZONE"); +} + +static gboolean +system_timezone_write_etc_sysconfig_clock_alt (const char *tz, + GError **error) +{ + return system_timezone_write_key_file (ETC_SYSCONFIG_CLOCK, + "TIMEZONE", tz, error); +} + +/* This works for old Gentoo */ +static char * +system_timezone_read_etc_conf_d_clock (void) +{ + return system_timezone_read_key_file (ETC_CONF_D_CLOCK, + "TIMEZONE"); +} + +static gboolean +system_timezone_write_etc_conf_d_clock (const char *tz, + GError **error) +{ + return system_timezone_write_key_file (ETC_CONF_D_CLOCK, + "TIMEZONE", tz, error); +} + +/* This works for Arch Linux */ +static char * +system_timezone_read_etc_rc_conf (void) +{ + return system_timezone_read_key_file (ETC_RC_CONF, + "TIMEZONE"); +} + +static gboolean +system_timezone_write_etc_rc_conf (const char *tz, + GError **error) +{ + return system_timezone_write_key_file (ETC_RC_CONF, + "TIMEZONE", tz, error); +} + +/* + * + * First, getting the timezone. + * + */ + +static char * +system_timezone_strip_path_if_valid (const char *filename) +{ + int skip; + + if (!filename || !g_str_has_prefix (filename, SYSTEM_ZONEINFODIR"/")) + return NULL; + + /* Timezone data files also live under posix/ and right/ for some + * reason. + * FIXME: make sure accepting those files is valid. I think "posix" is + * okay, not sure about "right" */ + if (g_str_has_prefix (filename, SYSTEM_ZONEINFODIR"/posix/")) + skip = strlen (SYSTEM_ZONEINFODIR"/posix/"); + else if (g_str_has_prefix (filename, SYSTEM_ZONEINFODIR"/right/")) + skip = strlen (SYSTEM_ZONEINFODIR"/right/"); + else + skip = strlen (SYSTEM_ZONEINFODIR"/"); + + return g_strdup (filename + skip); +} + +/* Read the soft symlink from /etc/localtime */ +static char * +system_timezone_read_etc_localtime_softlink (void) +{ + char *file; + char *tz; + + if (!g_file_test (ETC_LOCALTIME, G_FILE_TEST_IS_SYMLINK)) + return NULL; + + file = g_file_read_link (ETC_LOCALTIME, NULL); + tz = system_timezone_strip_path_if_valid (file); + g_free (file); + + return tz; +} + +typedef gboolean (*CompareFiles) (struct stat *a_stat, + struct stat *b_stat, + const char *a_content, + gsize a_content_len, + const char *b_filename); + +static char * +recursive_compare (struct stat *localtime_stat, + const char *localtime_content, + gsize localtime_content_len, + char *file, + CompareFiles compare_func) +{ + struct stat file_stat; + + if (g_stat (file, &file_stat) != 0) + return NULL; + + if (S_ISREG (file_stat.st_mode)) { + if (compare_func (localtime_stat, + &file_stat, + localtime_content, + localtime_content_len, + file)) + return system_timezone_strip_path_if_valid (file); + else + return NULL; + } else if (S_ISDIR (file_stat.st_mode)) { + GDir *dir = NULL; + char *ret = NULL; + const char *subfile = NULL; + char *subpath = NULL; + + dir = g_dir_open (file, 0, NULL); + if (dir == NULL) + return NULL; + + while ((subfile = g_dir_read_name (dir)) != NULL) { + subpath = g_build_filename (file, subfile, NULL); + + ret = recursive_compare (localtime_stat, + localtime_content, + localtime_content_len, + subpath, + compare_func); + + g_free (subpath); + + if (ret != NULL) + break; + } + + g_dir_close (dir); + + return ret; + } + + return NULL; +} + + +static gboolean +files_are_identical_inode (struct stat *a_stat, + struct stat *b_stat, + const char *a_content, + gsize a_content_len, + const char *b_filename) +{ + return (a_stat->st_ino == b_stat->st_ino); +} + + +/* Determine if /etc/localtime is a hard link to some file, by looking at + * the inodes */ +static char * +system_timezone_read_etc_localtime_hardlink (void) +{ + struct stat stat_localtime; + + if (g_stat (ETC_LOCALTIME, &stat_localtime) != 0) + return NULL; + + if (!S_ISREG (stat_localtime.st_mode)) + return NULL; + + return recursive_compare (&stat_localtime, + NULL, + 0, + SYSTEM_ZONEINFODIR, + files_are_identical_inode); +} + +static gboolean +files_are_identical_content (struct stat *a_stat, + struct stat *b_stat, + const char *a_content, + gsize a_content_len, + const char *b_filename) +{ + char *b_content = NULL; + gsize b_content_len = -1; + int cmp; + + if (a_stat->st_size != b_stat->st_size) + return FALSE; + + if (!g_file_get_contents (b_filename, + &b_content, &b_content_len, NULL)) + return FALSE; + + if (a_content_len != b_content_len) { + g_free (b_content); + return FALSE; + } + + cmp = memcmp (a_content, b_content, a_content_len); + g_free (b_content); + + return (cmp == 0); +} + +/* Determine if /etc/localtime is a copy of a timezone file */ +static char * +system_timezone_read_etc_localtime_content (void) +{ + struct stat stat_localtime; + char *localtime_content = NULL; + gsize localtime_content_len = -1; + char *retval; + + if (g_stat (ETC_LOCALTIME, &stat_localtime) != 0) + return NULL; + + if (!S_ISREG (stat_localtime.st_mode)) + return NULL; + + if (!g_file_get_contents (ETC_LOCALTIME, + &localtime_content, + &localtime_content_len, + NULL)) + return NULL; + + retval = recursive_compare (&stat_localtime, + localtime_content, + localtime_content_len, + SYSTEM_ZONEINFODIR, + files_are_identical_content); + + g_free (localtime_content); + + return retval; +} + +typedef char * (*GetSystemTimezone) (void); +/* The order of the functions here define the priority of the methods used + * to find the timezone. First method has higher priority. */ +static GetSystemTimezone get_system_timezone_methods[] = { + /* cheap and "more correct" than data from a config file */ + system_timezone_read_etc_localtime_softlink, + /* reading various config files */ + system_timezone_read_etc_timezone, + system_timezone_read_etc_sysconfig_clock, + system_timezone_read_etc_sysconfig_clock_alt, + system_timezone_read_etc_TIMEZONE, + system_timezone_read_etc_rc_conf, + /* reading deprecated config files */ + system_timezone_read_etc_conf_d_clock, + /* reading /etc/timezone directly. Expensive since we have to stat + * many files */ + system_timezone_read_etc_localtime_hardlink, + system_timezone_read_etc_localtime_content, + NULL +}; + +static gboolean +system_timezone_is_valid (const char *tz) +{ + const char *c; + + if (!tz) + return FALSE; + + for (c = tz; *c != '\0'; c++) { + if (!(g_ascii_isalnum (*c) || + *c == '/' || *c == '-' || *c == '_')) + return FALSE; + } + + return TRUE; +} + +char * +system_timezone_find (void) +{ + char *tz; + int i; + + for (i = 0; get_system_timezone_methods[i] != NULL; i++) { + tz = get_system_timezone_methods[i] (); + + if (system_timezone_is_valid (tz)) + return tz; + + g_free (tz); + } + + return g_strdup ("UTC"); +} + +/* + * + * Now, setting the timezone. + * + */ + +static gboolean +system_timezone_is_zone_file_valid (const char *zone_file, + GError **error) +{ + GError *our_error; + GIOChannel *channel; + GIOStatus status; + char buffer[strlen (TZ_MAGIC)]; + gsize read; + + /* First, check the zone_file is properly rooted */ + if (!g_str_has_prefix (zone_file, SYSTEM_ZONEINFODIR"/")) { + g_set_error (error, SYSTEM_TIMEZONE_ERROR, + SYSTEM_TIMEZONE_ERROR_INVALID_TIMEZONE_FILE, + "Timezone file needs to be under "SYSTEM_ZONEINFODIR); + return FALSE; + } + + /* Second, check it's a regular file that exists */ + if (!g_file_test (zone_file, G_FILE_TEST_IS_REGULAR)) { + g_set_error (error, SYSTEM_TIMEZONE_ERROR, + SYSTEM_TIMEZONE_ERROR_INVALID_TIMEZONE_FILE, + "No such timezone file %s", zone_file); + return FALSE; + } + + /* Third, check that it's a tzfile (see tzfile(5)). The file has a 4 + * bytes header which is TZ_MAGIC. + * + * TODO: is there glibc API for this? */ + our_error = NULL; + channel = g_io_channel_new_file (zone_file, "r", &our_error); + if (!our_error) + status = g_io_channel_read_chars (channel, + buffer, strlen (TZ_MAGIC), + &read, &our_error); + if (channel) + g_io_channel_unref (channel); + + if (our_error) { + g_set_error (error, SYSTEM_TIMEZONE_ERROR, + SYSTEM_TIMEZONE_ERROR_INVALID_TIMEZONE_FILE, + "Timezone file %s cannot be read: %s", + zone_file, our_error->message); + g_error_free (our_error); + return FALSE; + } + + if (read != strlen (TZ_MAGIC) || strncmp (buffer, TZ_MAGIC, strlen (TZ_MAGIC)) != 0) { + g_set_error (error, SYSTEM_TIMEZONE_ERROR, + SYSTEM_TIMEZONE_ERROR_INVALID_TIMEZONE_FILE, + "%s is not a timezone file", + zone_file); + return FALSE; + } + + return TRUE; +} + +static gboolean +system_timezone_set_etc_timezone (const char *zone_file, + GError **error) +{ + GError *our_error; + char *content; + gsize len; + + if (!system_timezone_is_zone_file_valid (zone_file, error)) + return FALSE; + + /* If /etc/localtime is a symlink, write a symlink */ + if (g_file_test (ETC_LOCALTIME, G_FILE_TEST_IS_SYMLINK)) { + if (g_unlink (ETC_LOCALTIME) == 0 && + symlink (zone_file, ETC_LOCALTIME) == 0) + return TRUE; + + /* If we couldn't symlink the file, we'll just fallback on + * copying it */ + } + + /* Else copy the file to /etc/localtime. We explicitly avoid doing + * hard links since they break with different partitions */ + our_error = NULL; + if (!g_file_get_contents (zone_file, &content, &len, &our_error)) { + g_set_error (error, SYSTEM_TIMEZONE_ERROR, + SYSTEM_TIMEZONE_ERROR_GENERAL, + "Timezone file %s cannot be read: %s", + zone_file, our_error->message); + g_error_free (our_error); + return FALSE; + } + + if (!g_file_set_contents (ETC_LOCALTIME, content, len, &our_error)) { + g_set_error (error, SYSTEM_TIMEZONE_ERROR, + SYSTEM_TIMEZONE_ERROR_GENERAL, + ETC_LOCALTIME" cannot be overwritten: %s", + our_error->message); + g_error_free (our_error); + g_free (content); + return FALSE; + } + + g_free (content); + + return TRUE; +} + +typedef gboolean (*SetSystemTimezone) (const char *tz, + GError **error); +/* The order here does not matter too much: we'll try to change all files + * that already have a timezone configured. It matters in case of error, + * since the process will be stopped and the last methods won't be called. + * So we use the same order as in get_system_timezone_methods */ +static SetSystemTimezone set_system_timezone_methods[] = { + /* writing various config files if they exist and have the + * setting already present */ + system_timezone_write_etc_timezone, + system_timezone_write_etc_sysconfig_clock, + system_timezone_write_etc_sysconfig_clock_alt, + system_timezone_write_etc_TIMEZONE, + system_timezone_write_etc_rc_conf, + /* writing deprecated config files if they exist and have the + * setting already present */ + system_timezone_write_etc_conf_d_clock, + NULL +}; + +static gboolean +system_timezone_update_config (const char *tz, + GError **error) +{ + int i; + + for (i = 0; set_system_timezone_methods[i] != NULL; i++) { + if (!set_system_timezone_methods[i] (tz, error)) + return FALSE; + /* FIXME: maybe continue to change all config files if + * possible? */ + } + + return TRUE; +} + +gboolean +system_timezone_set_from_file (const char *zone_file, + GError **error) +{ + const char *tz; + + g_return_val_if_fail (error == NULL || *error == NULL, FALSE); + + tz = zone_file + strlen (SYSTEM_ZONEINFODIR"/"); + + /* FIXME: is it right to return FALSE even when /etc/localtime was + * changed but not the config files? */ + return (system_timezone_set_etc_timezone (zone_file, error) && + system_timezone_update_config (tz, error)); +} + +gboolean +system_timezone_set (const char *tz, + GError **error) +{ + char *zone_file; + gboolean retval; + + g_return_val_if_fail (error == NULL || *error == NULL, FALSE); + + zone_file = g_build_filename (SYSTEM_ZONEINFODIR, tz, NULL); + + /* FIXME: is it right to return FALSE even when /etc/localtime was + * changed but not the config files? */ + retval = system_timezone_set_etc_timezone (zone_file, error) && + system_timezone_update_config (tz, error); + + g_free (zone_file); + + return retval; +} + +GQuark +system_timezone_error_quark (void) +{ + static GQuark ret = 0; + + if (ret == 0) { + ret = g_quark_from_static_string ("system-timezone-error"); + } + + return ret; +} diff --git a/plugins/datetime/system-timezone.h b/plugins/datetime/system-timezone.h new file mode 100644 index 0000000..b958cec --- /dev/null +++ b/plugins/datetime/system-timezone.h @@ -0,0 +1,89 @@ +/* System timezone handling + * + * Copyright (C) 2008 Novell, Inc. + * + * Authors: Vincent Untz <[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. + */ + +#ifndef __SYSTEM_TIMEZONE_H__ +#define __SYSTEM_TIMEZONE_H__ + +#include <glib.h> +#include <glib-object.h> + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef HAVE_SOLARIS +#define SYSTEM_ZONEINFODIR "/usr/share/lib/zoneinfo/tab" +#else +#define SYSTEM_ZONEINFODIR "/usr/share/zoneinfo" +#endif + + +#define SYSTEM_TIMEZONE_TYPE (system_timezone_get_type ()) +#define SYSTEM_TIMEZONE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), SYSTEM_TIMEZONE_TYPE, SystemTimezone)) +#define SYSTEM_TIMEZONE_CLASS(c) (G_TYPE_CHECK_CLASS_CAST ((c), SYSTEM_TIMEZONE_TYPE, SystemTimezoneClass)) +#define IS_SYSTEM_TIMEZONE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), SYSTEM_TIMEZONE_TYPE)) +#define IS_SYSTEM_TIMEZONE_CLASS(c) (G_TYPE_CHECK_CLASS_TYPE ((c), SYSTEM_TIMEZONE_TYPE)) +#define SYSTEM_TIMEZONE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), SYSTEM_TIMEZONE_TYPE, SystemTimezoneClass)) + +typedef struct +{ + GObject g_object; +} SystemTimezone; + +typedef struct +{ + GObjectClass g_object_class; + + void (* changed) (SystemTimezone *systz, + const char *tz); +} SystemTimezoneClass; + +GType system_timezone_get_type (void); + +SystemTimezone *system_timezone_new (void); + +const char *system_timezone_get (SystemTimezone *systz); +const char *system_timezone_get_env (SystemTimezone *systz); + +/* Functions to set the timezone. They won't be used by the applet, but + * by a program with more privileges */ + +#define SYSTEM_TIMEZONE_ERROR system_timezone_error_quark () +GQuark system_timezone_error_quark (void); + +typedef enum +{ + SYSTEM_TIMEZONE_ERROR_GENERAL, + SYSTEM_TIMEZONE_ERROR_INVALID_TIMEZONE_FILE, + SYSTEM_TIMEZONE_NUM_ERRORS +} SystemTimezoneError; + +char *system_timezone_find (void); + +gboolean system_timezone_set_from_file (const char *zone_file, + GError **error); +gboolean system_timezone_set (const char *tz, + GError **error); + +#ifdef __cplusplus +} +#endif +#endif /* __SYSTEM_TIMEZONE_H__ */ |