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-rw-r--r--src/timedate/timedatectl.c649
1 files changed, 649 insertions, 0 deletions
diff --git a/src/timedate/timedatectl.c b/src/timedate/timedatectl.c
new file mode 100644
index 0000000000..8c6e7c9212
--- /dev/null
+++ b/src/timedate/timedatectl.c
@@ -0,0 +1,649 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2012 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdlib.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <string.h>
+#include <sys/timex.h>
+
+#include "dbus-common.h"
+#include "util.h"
+#include "spawn-polkit-agent.h"
+#include "build.h"
+#include "hwclock.h"
+#include "strv.h"
+#include "pager.h"
+
+static bool arg_fix_system = false;
+static bool arg_no_pager = false;
+static enum transport {
+ TRANSPORT_NORMAL,
+ TRANSPORT_SSH,
+ TRANSPORT_POLKIT
+} arg_transport = TRANSPORT_NORMAL;
+static bool arg_ask_password = true;
+static const char *arg_host = NULL;
+
+static void pager_open_if_enabled(void) {
+
+ if (arg_no_pager)
+ return;
+
+ pager_open();
+}
+
+static void polkit_agent_open_if_enabled(void) {
+
+ /* Open the polkit agent as a child process if necessary */
+
+ if (!arg_ask_password)
+ return;
+
+ polkit_agent_open();
+}
+
+typedef struct StatusInfo {
+ const char *timezone;
+ bool local_rtc;
+ bool ntp;
+} StatusInfo;
+
+static bool ntp_synced(void) {
+
+ struct timex txc;
+
+ zero(txc);
+
+ if (adjtimex(&txc) < 0)
+ return false;
+
+ if (txc.status & STA_UNSYNC)
+ return false;
+
+ return true;
+}
+
+static void print_status_info(StatusInfo *i) {
+ usec_t n;
+ char b[FORMAT_TIMESTAMP_MAX];
+ struct tm tm;
+ time_t sec;
+ int r;
+
+ n = now(CLOCK_REALTIME);
+ sec = (time_t) (n / USEC_PER_SEC);
+
+ zero(tm);
+ assert_se(strftime(b, sizeof(b), "%a, %Y-%m-%d %H:%M:%S %Z", localtime_r(&sec, &tm)) > 0);
+ char_array_0(b);
+ printf(" Local time: %s\n", b);
+
+ zero(tm);
+ assert_se(strftime(b, sizeof(b), "%a, %Y-%m-%d %H:%M:%S UTC", gmtime_r(&sec, &tm)) > 0);
+ char_array_0(b);
+ printf(" Universal time: %s\n", b);
+
+ zero(tm);
+ r = hwclock_get_time(&tm);
+ if (r >= 0) {
+ /* Calculcate the week-day */
+ mktime(&tm);
+
+ assert_se(strftime(b, sizeof(b), "%a, %Y-%m-%d %H:%M:%S", &tm) > 0);
+ char_array_0(b);
+ printf(" RTC time: %s\n", b);
+ }
+
+ printf(" Timezone: %s\n"
+ " NTP enabled: %s\n"
+ "NTP synchronized: %s\n"
+ " RTC in local TZ: %s\n",
+ strna(i->timezone),
+ yes_no(i->ntp),
+ yes_no(ntp_synced()),
+ yes_no(i->local_rtc));
+
+ if (i->local_rtc)
+ fputs("\n" ANSI_HIGHLIGHT_ON
+ "Warning: The RTC is configured to maintain time in the local time zone. This\n"
+ " mode is not fully supported and will create various problems with time\n"
+ " zone changes and daylight saving adjustments. If at all possible use\n"
+ " RTC in UTC, by calling 'timedatectl set-local-rtc 0'" ANSI_HIGHLIGHT_OFF ".\n", stdout);
+}
+
+static int status_property(const char *name, DBusMessageIter *iter, StatusInfo *i) {
+ assert(name);
+ assert(iter);
+
+ switch (dbus_message_iter_get_arg_type(iter)) {
+
+ case DBUS_TYPE_STRING: {
+ const char *s;
+
+ dbus_message_iter_get_basic(iter, &s);
+ if (!isempty(s)) {
+ if (streq(name, "Timezone"))
+ i->timezone = s;
+ }
+ break;
+ }
+
+ case DBUS_TYPE_BOOLEAN: {
+ dbus_bool_t b;
+
+ dbus_message_iter_get_basic(iter, &b);
+ if (streq(name, "LocalRTC"))
+ i->local_rtc = b;
+ else if (streq(name, "NTP"))
+ i->ntp = b;
+ }
+ }
+
+ return 0;
+}
+
+static int show_status(DBusConnection *bus, char **args, unsigned n) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ const char *interface = "";
+ int r;
+ DBusMessageIter iter, sub, sub2, sub3;
+ StatusInfo info;
+
+ assert(args);
+
+ r = bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.timedate1",
+ "/org/freedesktop/timedate1",
+ "org.freedesktop.DBus.Properties",
+ "GetAll",
+ &reply,
+ NULL,
+ DBUS_TYPE_STRING, &interface,
+ DBUS_TYPE_INVALID);
+ if (r < 0)
+ return r;
+
+ if (!dbus_message_iter_init(reply, &iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
+ dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
+ log_error("Failed to parse reply.");
+ return -EIO;
+ }
+
+ dbus_message_iter_recurse(&iter, &sub);
+
+ while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
+ const char *name;
+
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
+ log_error("Failed to parse reply.");
+ return -EIO;
+ }
+
+ dbus_message_iter_recurse(&sub, &sub2);
+
+ if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
+ log_error("Failed to parse reply.");
+ return -EIO;
+ }
+
+ if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
+ log_error("Failed to parse reply.");
+ return -EIO;
+ }
+
+ dbus_message_iter_recurse(&sub2, &sub3);
+
+ r = status_property(name, &sub3, &info);
+ if (r < 0) {
+ log_error("Failed to parse reply.");
+ return r;
+ }
+
+ dbus_message_iter_next(&sub);
+ }
+
+ print_status_info(&info);
+ return 0;
+}
+
+static int set_time(DBusConnection *bus, char **args, unsigned n) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ dbus_bool_t relative = false, interactive = true;
+ usec_t t;
+ dbus_int64_t u;
+ int r;
+
+ assert(args);
+ assert(n == 2);
+
+ polkit_agent_open_if_enabled();
+
+ r = parse_timestamp(args[1], &t);
+ if (r < 0) {
+ log_error("Failed to parse time specification: %s", args[1]);
+ return r;
+ }
+
+ u = (dbus_uint64_t) t;
+
+ return bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.timedate1",
+ "/org/freedesktop/timedate1",
+ "org.freedesktop.timedate1",
+ "SetTime",
+ &reply,
+ NULL,
+ DBUS_TYPE_INT64, &u,
+ DBUS_TYPE_BOOLEAN, &relative,
+ DBUS_TYPE_BOOLEAN, &interactive,
+ DBUS_TYPE_INVALID);
+}
+
+static int set_timezone(DBusConnection *bus, char **args, unsigned n) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ dbus_bool_t interactive = true;
+
+ assert(args);
+ assert(n == 2);
+
+ polkit_agent_open_if_enabled();
+
+ return bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.timedate1",
+ "/org/freedesktop/timedate1",
+ "org.freedesktop.timedate1",
+ "SetTimezone",
+ &reply,
+ NULL,
+ DBUS_TYPE_STRING, &args[1],
+ DBUS_TYPE_BOOLEAN, &interactive,
+ DBUS_TYPE_INVALID);
+}
+
+static int set_local_rtc(DBusConnection *bus, char **args, unsigned n) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ dbus_bool_t interactive = true, b, q;
+ int r;
+
+ assert(args);
+ assert(n == 2);
+
+ polkit_agent_open_if_enabled();
+
+ r = parse_boolean(args[1]);
+ if (r < 0) {
+ log_error("Failed to parse local RTC setting: %s", args[1]);
+ return r;
+ }
+
+ b = r;
+ q = arg_fix_system;
+
+ return bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.timedate1",
+ "/org/freedesktop/timedate1",
+ "org.freedesktop.timedate1",
+ "SetLocalRTC",
+ &reply,
+ NULL,
+ DBUS_TYPE_BOOLEAN, &b,
+ DBUS_TYPE_BOOLEAN, &q,
+ DBUS_TYPE_BOOLEAN, &interactive,
+ DBUS_TYPE_INVALID);
+}
+
+static int set_ntp(DBusConnection *bus, char **args, unsigned n) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ dbus_bool_t interactive = true, b;
+ int r;
+
+ assert(args);
+ assert(n == 2);
+
+ polkit_agent_open_if_enabled();
+
+ r = parse_boolean(args[1]);
+ if (r < 0) {
+ log_error("Failed to parse NTP setting: %s", args[1]);
+ return r;
+ }
+
+ b = r;
+
+ return bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.timedate1",
+ "/org/freedesktop/timedate1",
+ "org.freedesktop.timedate1",
+ "SetNTP",
+ &reply,
+ NULL,
+ DBUS_TYPE_BOOLEAN, &b,
+ DBUS_TYPE_BOOLEAN, &interactive,
+ DBUS_TYPE_INVALID);
+}
+
+static int zone_compare(const void *_a, const void *_b) {
+ const char **a = (const char**) _a, **b = (const char**) _b;
+
+ return strcmp(*a, *b);
+}
+
+static int list_timezones(DBusConnection *bus, char **args, unsigned n) {
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_strv_free_ char **zones = NULL;
+ size_t n_zones;
+ char **i;
+
+ assert(args);
+ assert(n == 1);
+
+ f = fopen("/usr/share/zoneinfo/zone.tab", "re");
+ if (!f) {
+ log_error("Failed to open timezone database: %m");
+ return -errno;
+ }
+
+ for (;;) {
+ char l[LINE_MAX], *p, **z, *w;
+ size_t k;
+
+ if (!fgets(l, sizeof(l), f)) {
+ if (feof(f))
+ break;
+
+ log_error("Failed to read timezone database: %m");
+ return -errno;
+ }
+
+ p = strstrip(l);
+
+ if (isempty(p) || *p == '#')
+ continue;
+
+
+ /* Skip over country code */
+ p += strcspn(p, WHITESPACE);
+ p += strspn(p, WHITESPACE);
+
+ /* Skip over coordinates */
+ p += strcspn(p, WHITESPACE);
+ p += strspn(p, WHITESPACE);
+
+ /* Found timezone name */
+ k = strcspn(p, WHITESPACE);
+ if (k <= 0)
+ continue;
+
+ w = strndup(p, k);
+ if (!w)
+ return log_oom();
+
+ z = realloc(zones, sizeof(char*) * (n_zones + 2));
+ if (!z) {
+ free(w);
+ return log_oom();
+ }
+
+ zones = z;
+ zones[n_zones++] = w;
+ }
+
+ if (zones)
+ zones[n_zones] = 0;
+
+ qsort(zones, n_zones, sizeof(char*), zone_compare);
+
+ pager_open_if_enabled();
+
+ STRV_FOREACH(i, zones)
+ puts(*i);
+
+ return 0;
+}
+
+static int help(void) {
+
+ printf("%s [OPTIONS...] {COMMAND} ...\n\n"
+ "Query or control system time and date settings.\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --fix-system Adjust system clock when changing local RTC mode\n"
+ " --no-pager Do not pipe output into a pager\n"
+ " --no-ask-password Do not prompt for password\n"
+ " -H --host=[USER@]HOST Operate on remote host\n\n"
+ "Commands:\n"
+ " status Show current time settings\n"
+ " set-time [TIME] Set system time\n"
+ " set-timezone [ZONE] Set system timezone\n"
+ " list-timezones Show known timezones\n"
+ " set-local-rtc [BOOL] Control whether RTC is in local time\n"
+ " set-ntp [BOOL] Control whether NTP is enabled\n",
+ program_invocation_short_name);
+
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_NO_PAGER,
+ ARG_FIX_SYSTEM,
+ ARG_NO_ASK_PASSWORD
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "no-pager", no_argument, NULL, ARG_NO_PAGER },
+ { "host", required_argument, NULL, 'H' },
+ { "privileged", no_argument, NULL, 'P' },
+ { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
+ { "fix-system", no_argument, NULL, ARG_FIX_SYSTEM },
+ { NULL, 0, NULL, 0 }
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "+hp:as:H:P", options, NULL)) >= 0) {
+
+ switch (c) {
+
+ case 'h':
+ help();
+ return 0;
+
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(DISTRIBUTION);
+ puts(SYSTEMD_FEATURES);
+ return 0;
+
+ case 'P':
+ arg_transport = TRANSPORT_POLKIT;
+ break;
+
+ case 'H':
+ arg_transport = TRANSPORT_SSH;
+ arg_host = optarg;
+ break;
+
+ case ARG_FIX_SYSTEM:
+ arg_fix_system = true;
+ break;
+
+ case ARG_NO_PAGER:
+ arg_no_pager = true;
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ log_error("Unknown option code %c", c);
+ return -EINVAL;
+ }
+ }
+
+ return 1;
+}
+
+static int timedatectl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
+
+ static const struct {
+ const char* verb;
+ const enum {
+ MORE,
+ LESS,
+ EQUAL
+ } argc_cmp;
+ const int argc;
+ int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
+ } verbs[] = {
+ { "status", LESS, 1, show_status },
+ { "set-time", EQUAL, 2, set_time },
+ { "set-timezone", EQUAL, 2, set_timezone },
+ { "list-timezones", EQUAL, 1, list_timezones },
+ { "set-local-rtc", EQUAL, 2, set_local_rtc },
+ { "set-ntp", EQUAL, 2, set_ntp, },
+ };
+
+ int left;
+ unsigned i;
+
+ assert(argc >= 0);
+ assert(argv);
+ assert(error);
+
+ left = argc - optind;
+
+ if (left <= 0)
+ /* Special rule: no arguments means "status" */
+ i = 0;
+ else {
+ if (streq(argv[optind], "help")) {
+ help();
+ return 0;
+ }
+
+ for (i = 0; i < ELEMENTSOF(verbs); i++)
+ if (streq(argv[optind], verbs[i].verb))
+ break;
+
+ if (i >= ELEMENTSOF(verbs)) {
+ log_error("Unknown operation %s", argv[optind]);
+ return -EINVAL;
+ }
+ }
+
+ switch (verbs[i].argc_cmp) {
+
+ case EQUAL:
+ if (left != verbs[i].argc) {
+ log_error("Invalid number of arguments.");
+ return -EINVAL;
+ }
+
+ break;
+
+ case MORE:
+ if (left < verbs[i].argc) {
+ log_error("Too few arguments.");
+ return -EINVAL;
+ }
+
+ break;
+
+ case LESS:
+ if (left > verbs[i].argc) {
+ log_error("Too many arguments.");
+ return -EINVAL;
+ }
+
+ break;
+
+ default:
+ assert_not_reached("Unknown comparison operator.");
+ }
+
+ if (!bus) {
+ log_error("Failed to get D-Bus connection: %s", error->message);
+ return -EIO;
+ }
+
+ return verbs[i].dispatch(bus, argv + optind, left);
+}
+
+int main(int argc, char *argv[]) {
+ int r, retval = EXIT_FAILURE;
+ DBusConnection *bus = NULL;
+ DBusError error;
+
+ dbus_error_init(&error);
+
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r < 0)
+ goto finish;
+ else if (r == 0) {
+ retval = EXIT_SUCCESS;
+ goto finish;
+ }
+
+ if (arg_transport == TRANSPORT_NORMAL)
+ bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
+ else if (arg_transport == TRANSPORT_POLKIT)
+ bus_connect_system_polkit(&bus, &error);
+ else if (arg_transport == TRANSPORT_SSH)
+ bus_connect_system_ssh(NULL, arg_host, &bus, &error);
+ else
+ assert_not_reached("Uh, invalid transport...");
+
+ r = timedatectl_main(bus, argc, argv, &error);
+ retval = r < 0 ? EXIT_FAILURE : r;
+
+finish:
+ if (bus) {
+ dbus_connection_flush(bus);
+ dbus_connection_close(bus);
+ dbus_connection_unref(bus);
+ }
+
+ dbus_error_free(&error);
+ dbus_shutdown();
+
+ pager_close();
+
+ return retval;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-23 13:13:49 +0000