src/timedate/timedatectl.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   Copyright 2012 Lennart Poettering
   4   Copyright 2013 Kay Sievers
   5 ***/
   6
   7 #include <getopt.h>
   8 #include <locale.h>
   9 #include <math.h>
  10 #include <stdbool.h>
  11 #include <stdlib.h>
  12
  13 #include "sd-bus.h"
  14
  15 #include "bus-error.h"
  16 #include "bus-util.h"
  17 #include "in-addr-util.h"
  18 #include "pager.h"
  19 #include "parse-util.h"
  20 #include "spawn-polkit-agent.h"
  21 #include "sparse-endian.h"
  22 #include "string-table.h"
  23 #include "strv.h"
  24 #include "terminal-util.h"
  25 #include "util.h"
  26 #include "verbs.h"
  27
  28 static bool arg_no_pager = false;
  29 static bool arg_ask_password = true;
  30 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
  31 static char *arg_host = NULL;
  32 static bool arg_adjust_system_clock = false;
  33 static bool arg_monitor = false;
  34 static char **arg_property = NULL;
  35 static bool arg_value = false;
  36 static bool arg_all = false;
  37
  38 typedef struct StatusInfo {
  39         usec_t time;
  40         const char *timezone;
  41
  42         usec_t rtc_time;
  43         bool rtc_local;
  44
  45         bool ntp_capable;
  46         bool ntp_active;
  47         bool ntp_synced;
  48 } StatusInfo;
  49
  50 static void print_status_info(const StatusInfo *i) {
  51         const char *old_tz = NULL, *tz;
  52         bool have_time = false;
  53         char a[LINE_MAX];
  54         struct tm tm;
  55         time_t sec;
  56         size_t n;
  57         int r;
  58
  59         assert(i);
  60
  61         /* Save the old $TZ */
  62         tz = getenv("TZ");
  63         if (tz)
  64                 old_tz = strdupa(tz);
  65
  66         /* Set the new $TZ */
  67         if (setenv("TZ", isempty(i->timezone) ? "UTC" : i->timezone, true) < 0)
  68                 log_warning_errno(errno, "Failed to set TZ environment variable, ignoring: %m");
  69         else
  70                 tzset();
  71
  72         if (i->time != 0) {
  73                 sec = (time_t) (i->time / USEC_PER_SEC);
  74                 have_time = true;
  75         } else if (IN_SET(arg_transport, BUS_TRANSPORT_LOCAL, BUS_TRANSPORT_MACHINE)) {
  76                 sec = time(NULL);
  77                 have_time = true;
  78         } else
  79                 log_warning("Could not get time from timedated and not operating locally, ignoring.");
  80
  81         if (have_time) {
  82                 n = strftime(a, sizeof a, "%a %Y-%m-%d %H:%M:%S %Z", localtime_r(&sec, &tm));
  83                 printf("               Local time: %s\n", n > 0 ? a : "n/a");
  84
  85                 n = strftime(a, sizeof a, "%a %Y-%m-%d %H:%M:%S UTC", gmtime_r(&sec, &tm));
  86                 printf("           Universal time: %s\n", n > 0 ? a : "n/a");
  87         } else {
  88                 printf("               Local time: %s\n", "n/a");
  89                 printf("           Universal time: %s\n", "n/a");
  90         }
  91
  92         if (i->rtc_time > 0) {
  93                 time_t rtc_sec;
  94
  95                 rtc_sec = (time_t) (i->rtc_time / USEC_PER_SEC);
  96                 n = strftime(a, sizeof a, "%a %Y-%m-%d %H:%M:%S", gmtime_r(&rtc_sec, &tm));
  97                 printf("                 RTC time: %s\n", n > 0 ? a : "n/a");
  98         } else
  99                 printf("                 RTC time: %s\n", "n/a");
 100
 101         if (have_time)
 102                 n = strftime(a, sizeof a, "%Z, %z", localtime_r(&sec, &tm));
 103
 104         /* Restore the $TZ */
 105         if (old_tz)
 106                 r = setenv("TZ", old_tz, true);
 107         else
 108                 r = unsetenv("TZ");
 109         if (r < 0)
 110                 log_warning_errno(errno, "Failed to set TZ environment variable, ignoring: %m");
 111         else
 112                 tzset();
 113
 114         printf("                Time zone: %s (%s)\n"
 115                "System clock synchronized: %s\n"
 116                "              NTP service: %s\n"
 117                "          RTC in local TZ: %s\n",
 118                strna(i->timezone), have_time && n > 0 ? a : "n/a",
 119                yes_no(i->ntp_synced),
 120                i->ntp_capable ? (i->ntp_active ? "active" : "inactive") : "n/a",
 121                yes_no(i->rtc_local));
 122
 123         if (i->rtc_local)
 124                 printf("\n%s"
 125                        "Warning: The system is configured to read the RTC time in the local time zone.\n"
 126                        "         This mode cannot be fully supported. It will create various problems\n"
 127                        "         with time zone changes and daylight saving time adjustments. The RTC\n"
 128                        "         time is never updated, it relies on external facilities to maintain it.\n"
 129                        "         If at all possible, use RTC in UTC by calling\n"
 130                        "         'timedatectl set-local-rtc 0'.%s\n", ansi_highlight(), ansi_normal());
 131 }
 132
 133 static int show_status(int argc, char **argv, void *userdata) {
 134         StatusInfo info = {};
 135         static const struct bus_properties_map map[]  = {
 136                 { "Timezone",        "s", NULL, offsetof(StatusInfo, timezone)    },
 137                 { "LocalRTC",        "b", NULL, offsetof(StatusInfo, rtc_local)   },
 138                 { "NTP",             "b", NULL, offsetof(StatusInfo, ntp_active)  },
 139                 { "CanNTP",          "b", NULL, offsetof(StatusInfo, ntp_capable) },
 140                 { "NTPSynchronized", "b", NULL, offsetof(StatusInfo, ntp_synced)  },
 141                 { "TimeUSec",        "t", NULL, offsetof(StatusInfo, time)        },
 142                 { "RTCTimeUSec",     "t", NULL, offsetof(StatusInfo, rtc_time)    },
 143                 {}
 144         };
 145
 146         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 147         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
 148         sd_bus *bus = userdata;
 149         int r;
 150
 151         assert(bus);
 152
 153         r = bus_map_all_properties(bus,
 154                                    "org.freedesktop.timedate1",
 155                                    "/org/freedesktop/timedate1",
 156                                    map,
 157                                    BUS_MAP_BOOLEAN_AS_BOOL,
 158                                    &error,
 159                                    &m,
 160                                    &info);
 161         if (r < 0)
 162                 return log_error_errno(r, "Failed to query server: %s", bus_error_message(&error, r));
 163
 164         print_status_info(&info);
 165
 166         return r;
 167 }
 168
 169 static int show_properties(int argc, char **argv, void *userdata) {
 170         sd_bus *bus = userdata;
 171         int r;
 172
 173         assert(bus);
 174
 175         r = bus_print_all_properties(bus,
 176                                      "org.freedesktop.timedate1",
 177                                      "/org/freedesktop/timedate1",
 178                                      NULL,
 179                                      arg_property,
 180                                      arg_value,
 181                                      arg_all,
 182                                      NULL);
 183         if (r < 0)
 184                 return bus_log_parse_error(r);
 185
 186         return 0;
 187 }
 188
 189 static int set_time(int argc, char **argv, void *userdata) {
 190         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 191         bool relative = false, interactive = arg_ask_password;
 192         sd_bus *bus = userdata;
 193         usec_t t;
 194         int r;
 195
 196         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
 197
 198         r = parse_timestamp(argv[1], &t);
 199         if (r < 0)
 200                 return log_error_errno(r, "Failed to parse time specification '%s': %m", argv[1]);
 201
 202         r = sd_bus_call_method(bus,
 203                                "org.freedesktop.timedate1",
 204                                "/org/freedesktop/timedate1",
 205                                "org.freedesktop.timedate1",
 206                                "SetTime",
 207                                &error,
 208                                NULL,
 209                                "xbb", (int64_t) t, relative, interactive);
 210         if (r < 0)
 211                 log_error("Failed to set time: %s", bus_error_message(&error, r));
 212
 213         return r;
 214 }
 215
 216 static int set_timezone(int argc, char **argv, void *userdata) {
 217         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 218         sd_bus *bus = userdata;
 219         int r;
 220
 221         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
 222
 223         r = sd_bus_call_method(bus,
 224                                "org.freedesktop.timedate1",
 225                                "/org/freedesktop/timedate1",
 226                                "org.freedesktop.timedate1",
 227                                "SetTimezone",
 228                                &error,
 229                                NULL,
 230                                "sb", argv[1], arg_ask_password);
 231         if (r < 0)
 232                 log_error("Failed to set time zone: %s", bus_error_message(&error, r));
 233
 234         return r;
 235 }
 236
 237 static int set_local_rtc(int argc, char **argv, void *userdata) {
 238         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 239         sd_bus *bus = userdata;
 240         int r, b;
 241
 242         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
 243
 244         b = parse_boolean(argv[1]);
 245         if (b < 0)
 246                 return log_error_errno(b, "Failed to parse local RTC setting '%s': %m", argv[1]);
 247
 248         r = sd_bus_call_method(bus,
 249                                "org.freedesktop.timedate1",
 250                                "/org/freedesktop/timedate1",
 251                                "org.freedesktop.timedate1",
 252                                "SetLocalRTC",
 253                                &error,
 254                                NULL,
 255                                "bbb", b, arg_adjust_system_clock, arg_ask_password);
 256         if (r < 0)
 257                 log_error("Failed to set local RTC: %s", bus_error_message(&error, r));
 258
 259         return r;
 260 }
 261
 262 static int set_ntp(int argc, char **argv, void *userdata) {
 263         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 264         sd_bus *bus = userdata;
 265         int b, r;
 266
 267         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
 268
 269         b = parse_boolean(argv[1]);
 270         if (b < 0)
 271                 return log_error_errno(b, "Failed to parse NTP setting '%s': %m", argv[1]);
 272
 273         r = sd_bus_call_method(bus,
 274                                "org.freedesktop.timedate1",
 275                                "/org/freedesktop/timedate1",
 276                                "org.freedesktop.timedate1",
 277                                "SetNTP",
 278                                &error,
 279                                NULL,
 280                                "bb", b, arg_ask_password);
 281         if (r < 0)
 282                 log_error("Failed to set ntp: %s", bus_error_message(&error, r));
 283
 284         return r;
 285 }
 286
 287 static int list_timezones(int argc, char **argv, void *userdata) {
 288         _cleanup_strv_free_ char **zones = NULL;
 289         int r;
 290
 291         r = get_timezones(&zones);
 292         if (r < 0)
 293                 return log_error_errno(r, "Failed to read list of time zones: %m");
 294
 295         (void) pager_open(arg_no_pager, false);
 296         strv_print(zones);
 297
 298         return 0;
 299 }
 300
 301 typedef struct NTPStatusInfo {
 302         const char *server_name;
 303         char *server_address;
 304         usec_t poll_interval, poll_max, poll_min;
 305         usec_t root_distance_max;
 306
 307         uint32_t leap, version, mode, stratum;
 308         int32_t precision;
 309         usec_t root_delay, root_dispersion;
 310         union {
 311                 char str[5];
 312                 uint32_t val;
 313         } reference;
 314         usec_t origin, recv, trans, dest;
 315
 316         bool spike;
 317         uint64_t packet_count;
 318         usec_t jitter;
 319
 320         int64_t freq;
 321 } NTPStatusInfo;
 322
 323 static void ntp_status_info_clear(NTPStatusInfo *p) {
 324         p->server_address = mfree(p->server_address);
 325 }
 326
 327 static const char * const ntp_leap_table[4] = {
 328         [0] = "normal",
 329         [1] = "last minute of the day has 61 seconds",
 330         [2] = "last minute of the day has 59 seconds",
 331         [3] = "not synchronized",
 332 };
 333
 334 #pragma GCC diagnostic push
 335 #pragma GCC diagnostic ignored "-Wtype-limits"
 336 DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(ntp_leap, uint32_t);
 337 #pragma GCC diagnostic pop
 338
 339 static void print_ntp_status_info(NTPStatusInfo *i) {
 340         char ts[FORMAT_TIMESPAN_MAX], tmin[FORMAT_TIMESPAN_MAX], tmax[FORMAT_TIMESPAN_MAX];
 341         usec_t delay, t14, t23, offset, root_distance;
 342         bool offset_sign;
 343
 344         assert(i);
 345
 346         /*
 347          * "Timestamp Name          ID   When Generated
 348          *  ------------------------------------------------------------
 349          *  Originate Timestamp     T1   time request sent by client
 350          *  Receive Timestamp       T2   time request received by server
 351          *  Transmit Timestamp      T3   time reply sent by server
 352          *  Destination Timestamp   T4   time reply received by client
 353          *
 354          *  The round-trip delay, d, and system clock offset, t, are defined as:
 355          *  d = (T4 - T1) - (T3 - T2)     t = ((T2 - T1) + (T3 - T4)) / 2"
 356          */
 357
 358         printf("       Server: %s (%s)\n",
 359                i->server_address, i->server_name);
 360         printf("Poll interval: %s (min: %s; max %s)\n",
 361                format_timespan(ts, sizeof(ts), i->poll_interval, 0),
 362                format_timespan(tmin, sizeof(tmin), i->poll_min, 0),
 363                format_timespan(tmax, sizeof(tmax), i->poll_max, 0));
 364
 365         if (i->packet_count == 0) {
 366                 printf(" Packet count: 0\n");
 367                 return;
 368         }
 369
 370         if (i->dest < i->origin || i->trans < i->recv || i->dest - i->origin < i->trans - i->recv) {
 371                 log_error("Invalid NTP response");
 372                 return;
 373         }
 374
 375         delay = (i->dest - i->origin) - (i->trans - i->recv);
 376
 377         t14 = i->origin + i->dest;
 378         t23 = i->recv + i->trans;
 379         offset_sign = t14 < t23;
 380         offset = (offset_sign ? t23 - t14 : t14 - t23) / 2;
 381
 382         root_distance = i->root_delay / 2 + i->root_dispersion;
 383
 384         printf("         Leap: %s\n"
 385                "      Version: %" PRIu32 "\n"
 386                "      Stratum: %" PRIu32 "\n",
 387                ntp_leap_to_string(i->leap),
 388                i->version,
 389                i->stratum);
 390         if (i->stratum <= 1)
 391                 printf("    Reference: %s\n", i->reference.str);
 392         else
 393                 printf("    Reference: %" PRIX32 "\n", be32toh(i->reference.val));
 394         printf("    Precision: %s (%" PRIi32 ")\n",
 395                format_timespan(ts, sizeof(ts), DIV_ROUND_UP((nsec_t) (exp2(i->precision) * NSEC_PER_SEC), NSEC_PER_USEC), 0),
 396                i->precision);
 397         printf("Root distance: %s (max: %s)\n",
 398                format_timespan(ts, sizeof(ts), root_distance, 0),
 399                format_timespan(tmax, sizeof(tmax), i->root_distance_max, 0));
 400         printf("       Offset: %s%s\n",
 401                offset_sign ? "+" : "-",
 402                format_timespan(ts, sizeof(ts), offset, 0));
 403         printf("        Delay: %s\n",
 404                format_timespan(ts, sizeof(ts), delay, 0));
 405         printf("       Jitter: %s\n",
 406                format_timespan(ts, sizeof(ts), i->jitter, 0));
 407         printf(" Packet count: %" PRIu64 "\n", i->packet_count);
 408
 409         if (!i->spike)
 410                 printf("    Frequency: %+.3fppm\n",
 411                        (double) i->freq / 0x10000);
 412 }
 413
 414 static int map_server_address(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
 415         char **p = (char **) userdata;
 416         const void *d;
 417         int family, r;
 418         size_t sz;
 419
 420         assert(p);
 421
 422         r = sd_bus_message_enter_container(m, 'r', "iay");
 423         if (r < 0)
 424                 return r;
 425
 426         r = sd_bus_message_read(m, "i", &family);
 427         if (r < 0)
 428                 return r;
 429
 430         r = sd_bus_message_read_array(m, 'y', &d, &sz);
 431         if (r < 0)
 432                 return r;
 433
 434         r = sd_bus_message_exit_container(m);
 435         if (r < 0)
 436                 return r;
 437
 438         if (sz == 0 && family == AF_UNSPEC) {
 439                 *p = mfree(*p);
 440                 return 0;
 441         }
 442
 443         if (!IN_SET(family, AF_INET, AF_INET6)) {
 444                 log_error("Unknown address family %i", family);
 445                 return -EINVAL;
 446         }
 447
 448         if (sz != FAMILY_ADDRESS_SIZE(family)) {
 449                 log_error("Invalid address size");
 450                 return -EINVAL;
 451         }
 452
 453         r = in_addr_to_string(family, d, p);
 454         if (r < 0)
 455                 return r;
 456
 457         return 0;
 458 }
 459
 460 static int map_ntp_message(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
 461         NTPStatusInfo *p = userdata;
 462         const void *d;
 463         size_t sz;
 464         int32_t b;
 465         int r;
 466
 467         assert(p);
 468
 469         r = sd_bus_message_enter_container(m, 'r', "uuuuittayttttbtt");
 470         if (r < 0)
 471                 return r;
 472
 473         r = sd_bus_message_read(m, "uuuuitt",
 474                                 &p->leap, &p->version, &p->mode, &p->stratum, &p->precision,
 475                                 &p->root_delay, &p->root_dispersion);
 476         if (r < 0)
 477                 return r;
 478
 479         r = sd_bus_message_read_array(m, 'y', &d, &sz);
 480         if (r < 0)
 481                 return r;
 482
 483         r = sd_bus_message_read(m, "ttttbtt",
 484                                 &p->origin, &p->recv, &p->trans, &p->dest,
 485                                 &b, &p->packet_count, &p->jitter);
 486         if (r < 0)
 487                 return r;
 488
 489         r = sd_bus_message_exit_container(m);
 490         if (r < 0)
 491                 return r;
 492
 493         if (sz != 4)
 494                 return -EINVAL;
 495
 496         memcpy(p->reference.str, d, sz);
 497
 498         p->spike = b;
 499
 500         return 0;
 501 }
 502
 503 static int show_timesync_status_once(sd_bus *bus) {
 504         static const struct bus_properties_map map_timesync[]  = {
 505                 { "ServerName",           "s",                  NULL,               offsetof(NTPStatusInfo, server_name)       },
 506                 { "ServerAddress",        "(iay)",              map_server_address, offsetof(NTPStatusInfo, server_address)    },
 507                 { "PollIntervalUSec",     "t",                  NULL,               offsetof(NTPStatusInfo, poll_interval)     },
 508                 { "PollIntervalMinUSec",  "t",                  NULL,               offsetof(NTPStatusInfo, poll_min)          },
 509                 { "PollIntervalMaxUSec",  "t",                  NULL,               offsetof(NTPStatusInfo, poll_max)          },
 510                 { "RootDistanceMaxUSec",  "t",                  NULL,               offsetof(NTPStatusInfo, root_distance_max) },
 511                 { "NTPMessage",           "(uuuuittayttttbtt)", map_ntp_message,    0                                          },
 512                 { "Frequency",            "x",                  NULL,               offsetof(NTPStatusInfo, freq)              },
 513                 {}
 514         };
 515         _cleanup_(ntp_status_info_clear) NTPStatusInfo info = {};
 516         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 517         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
 518         int r;
 519
 520         assert(bus);
 521
 522         r = bus_map_all_properties(bus,
 523                                    "org.freedesktop.timesync1",
 524                                    "/org/freedesktop/timesync1",
 525                                    map_timesync,
 526                                    BUS_MAP_BOOLEAN_AS_BOOL,
 527                                    &error,
 528                                    &m,
 529                                    &info);
 530         if (r < 0)
 531                 return log_error_errno(r, "Failed to query server: %s", bus_error_message(&error, r));
 532
 533         if (arg_monitor && !terminal_is_dumb())
 534                 fputs(ANSI_HOME_CLEAR, stdout);
 535
 536         print_ntp_status_info(&info);
 537
 538         return 0;
 539 }
 540
 541 static int on_properties_changed(sd_bus_message *m, void *userdata, sd_bus_error *error) {
 542         const char *name;
 543         int r;
 544
 545         assert(m);
 546
 547         r = sd_bus_message_read(m, "s", &name);
 548         if (r < 0)
 549                 return log_error_errno(r, "Failed to read interface name: %m");
 550
 551         if (!streq_ptr(name, "org.freedesktop.timesync1.Manager"))
 552                 return 0;
 553
 554         return show_timesync_status_once(sd_bus_message_get_bus(m));
 555 }
 556
 557 static int show_timesync_status(int argc, char **argv, void *userdata) {
 558         _cleanup_(sd_event_unrefp) sd_event *event = NULL;
 559         sd_bus *bus = userdata;
 560         int r;
 561
 562         assert(bus);
 563
 564         r = show_timesync_status_once(bus);
 565         if (r < 0)
 566                 return r;
 567
 568         if (!arg_monitor)
 569                 return 0;
 570
 571         r = sd_event_default(&event);
 572         if (r < 0)
 573                 return log_error_errno(r, "Failed to get event loop: %m");
 574
 575         r = sd_bus_match_signal(bus,
 576                                 NULL,
 577                                 "org.freedesktop.timesync1",
 578                                 "/org/freedesktop/timesync1",
 579                                 "org.freedesktop.DBus.Properties",
 580                                 "PropertiesChanged",
 581                                 on_properties_changed, NULL);
 582         if (r < 0)
 583                 return log_error_errno(r, "Failed to request match for PropertiesChanged signal: %m");
 584
 585         r = sd_bus_attach_event(bus, event, SD_EVENT_PRIORITY_NORMAL);
 586         if (r < 0)
 587                 return log_error_errno(r, "Failed to attach bus to event loop: %m");
 588
 589         r = sd_event_loop(event);
 590         if (r < 0)
 591                 return log_error_errno(r, "Failed to run event loop: %m");
 592
 593         return 0;
 594 }
 595
 596 #define property(name, fmt, ...)                                        \
 597         do {                                                            \
 598                 if (value)                                              \
 599                         printf(fmt "\n", __VA_ARGS__);                  \
 600                 else                                                    \
 601                         printf("%s=" fmt "\n", name, __VA_ARGS__);      \
 602         } while (0)
 603
 604 static int print_timesync_property(const char *name, sd_bus_message *m, bool value, bool all) {
 605         char type;
 606         const char *contents;
 607         int r;
 608
 609         assert(name);
 610         assert(m);
 611
 612         r = sd_bus_message_peek_type(m, &type, &contents);
 613         if (r < 0)
 614                 return r;
 615
 616         switch (type) {
 617
 618         case SD_BUS_TYPE_STRUCT:
 619                 if (streq(name, "NTPMessage")) {
 620                         _cleanup_(ntp_status_info_clear) NTPStatusInfo i = {};
 621                         char ts[FORMAT_TIMESPAN_MAX], stamp[FORMAT_TIMESTAMP_MAX];
 622
 623                         r = map_ntp_message(NULL, NULL, m, NULL, &i);
 624                         if (r < 0)
 625                                 return r;
 626
 627                         if (i.packet_count == 0)
 628                                 return 1;
 629
 630                         if (!value) {
 631                                 fputs(name, stdout);
 632                                 fputc('=', stdout);
 633                         }
 634
 635                         printf("{ Leap=%u, Version=%u, Mode=%u, Stratum=%u, Precision=%i,",
 636                                i.leap, i.version, i.mode, i.stratum, i.precision);
 637                         printf(" RootDelay=%s,",
 638                                format_timespan(ts, sizeof(ts), i.root_delay, 0));
 639                         printf(" RootDispersion=%s,",
 640                                format_timespan(ts, sizeof(ts), i.root_dispersion, 0));
 641
 642                         if (i.stratum == 1)
 643                                 printf(" Reference=%s,", i.reference.str);
 644                         else
 645                                 printf(" Reference=%" PRIX32 ",", be32toh(i.reference.val));
 646
 647                         printf(" OriginateTimestamp=%s,",
 648                                format_timestamp(stamp, sizeof(stamp), i.origin));
 649                         printf(" ReceiveTimestamp=%s,",
 650                                format_timestamp(stamp, sizeof(stamp), i.recv));
 651                         printf(" TransmitTimestamp=%s,",
 652                                format_timestamp(stamp, sizeof(stamp), i.trans));
 653                         printf(" DestinationTimestamp=%s,",
 654                                format_timestamp(stamp, sizeof(stamp), i.dest));
 655                         printf(" Ignored=%s PacketCount=%" PRIu64 ",",
 656                                yes_no(i.spike), i.packet_count);
 657                         printf(" Jitter=%s }\n",
 658                                format_timespan(ts, sizeof(ts), i.jitter, 0));
 659
 660                         return 1;
 661
 662                 } else if (streq(name, "ServerAddress")) {
 663                         _cleanup_free_ char *str = NULL;
 664
 665                         r = map_server_address(NULL, NULL, m, NULL, &str);
 666                         if (r < 0)
 667                                 return r;
 668
 669                         if (arg_all || !isempty(str))
 670                                 property(name, "%s", str);
 671
 672                         return 1;
 673                 }
 674                 break;
 675         }
 676
 677         return 0;
 678 }
 679
 680 static int show_timesync(int argc, char **argv, void *userdata) {
 681         sd_bus *bus = userdata;
 682         int r;
 683
 684         assert(bus);
 685
 686         r = bus_print_all_properties(bus,
 687                                      "org.freedesktop.timesync1",
 688                                      "/org/freedesktop/timesync1",
 689                                      print_timesync_property,
 690                                      arg_property,
 691                                      arg_value,
 692                                      arg_all,
 693                                      NULL);
 694         if (r < 0)
 695                 return bus_log_parse_error(r);
 696
 697         return 0;
 698 }
 699
 700 static int help(void) {
 701         printf("%s [OPTIONS...] COMMAND ...\n\n"
 702                "Query or change system time and date settings.\n\n"
 703                "  -h --help                Show this help message\n"
 704                "     --version             Show package version\n"
 705                "     --no-pager            Do not pipe output into a pager\n"
 706                "     --no-ask-password     Do not prompt for password\n"
 707                "  -H --host=[USER@]HOST    Operate on remote host\n"
 708                "  -M --machine=CONTAINER   Operate on local container\n"
 709                "     --adjust-system-clock Adjust system clock when changing local RTC mode\n"
 710                "     --monitor             Monitor status of systemd-timesyncd\n"
 711                "  -p --property=NAME       Show only properties by this name\n"
 712                "  -a --all                 Show all properties, including empty ones\n"
 713                "     --value               When showing properties, only print the value\n"
 714                "\n"
 715                "Commands:\n"
 716                "  status                   Show current time settings\n"
 717                "  show                     Show properties of systemd-timedated\n"
 718                "  set-time TIME            Set system time\n"
 719                "  set-timezone ZONE        Set system time zone\n"
 720                "  list-timezones           Show known time zones\n"
 721                "  set-local-rtc BOOL       Control whether RTC is in local time\n"
 722                "  set-ntp BOOL             Enable or disable network time synchronization\n"
 723                "\n"
 724                "systemd-timesyncd Commands:\n"
 725                "  timesync-status          Show status of systemd-timesyncd\n"
 726                "  show-timesync            Show properties of systemd-timesyncd\n"
 727                , program_invocation_short_name);
 728
 729         return 0;
 730 }
 731
 732 static int verb_help(int argc, char **argv, void *userdata) {
 733         return help();
 734 }
 735
 736 static int parse_argv(int argc, char *argv[]) {
 737
 738         enum {
 739                 ARG_VERSION = 0x100,
 740                 ARG_NO_PAGER,
 741                 ARG_ADJUST_SYSTEM_CLOCK,
 742                 ARG_NO_ASK_PASSWORD,
 743                 ARG_MONITOR,
 744                 ARG_VALUE,
 745         };
 746
 747         static const struct option options[] = {
 748                 { "help",                no_argument,       NULL, 'h'                     },
 749                 { "version",             no_argument,       NULL, ARG_VERSION             },
 750                 { "no-pager",            no_argument,       NULL, ARG_NO_PAGER            },
 751                 { "host",                required_argument, NULL, 'H'                     },
 752                 { "machine",             required_argument, NULL, 'M'                     },
 753                 { "no-ask-password",     no_argument,       NULL, ARG_NO_ASK_PASSWORD     },
 754                 { "adjust-system-clock", no_argument,       NULL, ARG_ADJUST_SYSTEM_CLOCK },
 755                 { "monitor",             no_argument,       NULL, ARG_MONITOR             },
 756                 { "property",            required_argument, NULL, 'p'                     },
 757                 { "all",                 no_argument,       NULL, 'a'                     },
 758                 { "value",               no_argument,       NULL, ARG_VALUE               },
 759                 {}
 760         };
 761
 762         int c, r;
 763
 764         assert(argc >= 0);
 765         assert(argv);
 766
 767         while ((c = getopt_long(argc, argv, "hH:M:p:a", options, NULL)) >= 0)
 768
 769                 switch (c) {
 770
 771                 case 'h':
 772                         return help();
 773
 774                 case ARG_VERSION:
 775                         return version();
 776
 777                 case 'H':
 778                         arg_transport = BUS_TRANSPORT_REMOTE;
 779                         arg_host = optarg;
 780                         break;
 781
 782                 case 'M':
 783                         arg_transport = BUS_TRANSPORT_MACHINE;
 784                         arg_host = optarg;
 785                         break;
 786
 787                 case ARG_NO_ASK_PASSWORD:
 788                         arg_ask_password = false;
 789                         break;
 790
 791                 case ARG_ADJUST_SYSTEM_CLOCK:
 792                         arg_adjust_system_clock = true;
 793                         break;
 794
 795                 case ARG_NO_PAGER:
 796                         arg_no_pager = true;
 797                         break;
 798
 799                 case ARG_MONITOR:
 800                         arg_monitor = true;
 801                         break;
 802
 803                 case 'p': {
 804                         r = strv_extend(&arg_property, optarg);
 805                         if (r < 0)
 806                                 return log_oom();
 807
 808                         /* If the user asked for a particular
 809                          * property, show it to him, even if it is
 810                          * empty. */
 811                         arg_all = true;
 812                         break;
 813                 }
 814
 815                 case 'a':
 816                         arg_all = true;
 817                         break;
 818
 819                 case ARG_VALUE:
 820                         arg_value = true;
 821                         break;
 822
 823                 case '?':
 824                         return -EINVAL;
 825
 826                 default:
 827                         assert_not_reached("Unhandled option");
 828                 }
 829
 830         return 1;
 831 }
 832
 833 static int timedatectl_main(sd_bus *bus, int argc, char *argv[]) {
 834
 835         static const Verb verbs[] = {
 836                 { "status",          VERB_ANY, 1,        VERB_DEFAULT, show_status          },
 837                 { "show",            VERB_ANY, 1,        0,            show_properties      },
 838                 { "set-time",        2,        2,        0,            set_time             },
 839                 { "set-timezone",    2,        2,        0,            set_timezone         },
 840                 { "list-timezones",  VERB_ANY, 1,        0,            list_timezones       },
 841                 { "set-local-rtc",   2,        2,        0,            set_local_rtc        },
 842                 { "set-ntp",         2,        2,        0,            set_ntp              },
 843                 { "timesync-status", VERB_ANY, 1,        0,            show_timesync_status },
 844                 { "show-timesync",   VERB_ANY, 1,        0,            show_timesync        },
 845                 { "help",            VERB_ANY, VERB_ANY, 0,            verb_help            }, /* Not documented, but supported since it is created. */
 846                 {}
 847         };
 848
 849         return dispatch_verb(argc, argv, verbs, bus);
 850 }
 851
 852 int main(int argc, char *argv[]) {
 853         sd_bus *bus = NULL;
 854         int r;
 855
 856         setlocale(LC_ALL, "");
 857         log_parse_environment();
 858         log_open();
 859
 860         r = parse_argv(argc, argv);
 861         if (r <= 0)
 862                 goto finish;
 863
 864         r = bus_connect_transport(arg_transport, arg_host, false, &bus);
 865         if (r < 0) {
 866                 log_error_errno(r, "Failed to create bus connection: %m");
 867                 goto finish;
 868         }
 869
 870         r = timedatectl_main(bus, argc, argv);
 871
 872 finish:
 873         /* make sure we terminate the bus connection first, and then close the
 874          * pager, see issue #3543 for the details. */
 875         sd_bus_flush_close_unref(bus);
 876         pager_close();
 877
 878         return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
 879 }