src/locale/localectl.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <ftw.h>
   4 #include <getopt.h>
   5 #include <locale.h>
   6 #include <stdbool.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9
  10 #include "sd-bus.h"
  11
  12 #include "bus-error.h"
  13 #include "bus-util.h"
  14 #include "def.h"
  15 #include "fd-util.h"
  16 #include "fileio.h"
  17 #include "locale-util.h"
  18 #include "main-func.h"
  19 #include "pager.h"
  20 #include "pretty-print.h"
  21 #include "proc-cmdline.h"
  22 #include "set.h"
  23 #include "spawn-polkit-agent.h"
  24 #include "strv.h"
  25 #include "util.h"
  26 #include "verbs.h"
  27 #include "virt.h"
  28
  29 static PagerFlags arg_pager_flags = 0;
  30 static bool arg_ask_password = true;
  31 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
  32 static const char *arg_host = NULL;
  33 static bool arg_convert = true;
  34
  35 typedef struct StatusInfo {
  36         char **locale;
  37         const char *vconsole_keymap;
  38         const char *vconsole_keymap_toggle;
  39         const char *x11_layout;
  40         const char *x11_model;
  41         const char *x11_variant;
  42         const char *x11_options;
  43 } StatusInfo;
  44
  45 static void status_info_clear(StatusInfo *info) {
  46         if (info) {
  47                 strv_free(info->locale);
  48                 zero(*info);
  49         }
  50 }
  51
  52 static void print_overridden_variables(void) {
  53         _cleanup_(locale_variables_freep) char *variables[_VARIABLE_LC_MAX] = {};
  54         bool print_warning = true;
  55         LocaleVariable j;
  56         int r;
  57
  58         if (arg_transport != BUS_TRANSPORT_LOCAL)
  59                 return;
  60
  61         r = proc_cmdline_get_key_many(
  62                         PROC_CMDLINE_STRIP_RD_PREFIX,
  63                         "locale.LANG",              &variables[VARIABLE_LANG],
  64                         "locale.LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  65                         "locale.LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  66                         "locale.LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  67                         "locale.LC_TIME",           &variables[VARIABLE_LC_TIME],
  68                         "locale.LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  69                         "locale.LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  70                         "locale.LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  71                         "locale.LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  72                         "locale.LC_NAME",           &variables[VARIABLE_LC_NAME],
  73                         "locale.LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  74                         "locale.LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  75                         "locale.LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  76                         "locale.LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION]);
  77         if (r < 0 && r != -ENOENT) {
  78                 log_warning_errno(r, "Failed to read /proc/cmdline: %m");
  79                 return;
  80         }
  81
  82         for (j = 0; j < _VARIABLE_LC_MAX; j++)
  83                 if (variables[j]) {
  84                         if (print_warning) {
  85                                 log_warning("Warning: Settings on kernel command line override system locale settings in /etc/locale.conf.\n"
  86                                             "    Command Line: %s=%s", locale_variable_to_string(j), variables[j]);
  87
  88                                 print_warning = false;
  89                         } else
  90                                 log_warning("                  %s=%s", locale_variable_to_string(j), variables[j]);
  91                 }
  92 }
  93
  94 static void print_status_info(StatusInfo *i) {
  95         assert(i);
  96
  97         if (strv_isempty(i->locale))
  98                 puts("   System Locale: n/a");
  99         else {
 100                 char **j;
 101
 102                 printf("   System Locale: %s\n", i->locale[0]);
 103                 STRV_FOREACH(j, i->locale + 1)
 104                         printf("                  %s\n", *j);
 105         }
 106
 107         printf("       VC Keymap: %s\n", strna(i->vconsole_keymap));
 108         if (!isempty(i->vconsole_keymap_toggle))
 109                 printf("VC Toggle Keymap: %s\n", i->vconsole_keymap_toggle);
 110
 111         printf("      X11 Layout: %s\n", strna(i->x11_layout));
 112         if (!isempty(i->x11_model))
 113                 printf("       X11 Model: %s\n", i->x11_model);
 114         if (!isempty(i->x11_variant))
 115                 printf("     X11 Variant: %s\n", i->x11_variant);
 116         if (!isempty(i->x11_options))
 117                 printf("     X11 Options: %s\n", i->x11_options);
 118 }
 119
 120 static int show_status(int argc, char **argv, void *userdata) {
 121         _cleanup_(status_info_clear) StatusInfo info = {};
 122         static const struct bus_properties_map map[]  = {
 123                 { "VConsoleKeymap",       "s",  NULL, offsetof(StatusInfo, vconsole_keymap) },
 124                 { "VConsoleKeymapToggle", "s",  NULL, offsetof(StatusInfo, vconsole_keymap_toggle) },
 125                 { "X11Layout",            "s",  NULL, offsetof(StatusInfo, x11_layout) },
 126                 { "X11Model",             "s",  NULL, offsetof(StatusInfo, x11_model) },
 127                 { "X11Variant",           "s",  NULL, offsetof(StatusInfo, x11_variant) },
 128                 { "X11Options",           "s",  NULL, offsetof(StatusInfo, x11_options) },
 129                 { "Locale",               "as", NULL, offsetof(StatusInfo, locale) },
 130                 {}
 131         };
 132
 133         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 134         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
 135         sd_bus *bus = userdata;
 136         int r;
 137
 138         assert(bus);
 139
 140         r = bus_map_all_properties(bus,
 141                                    "org.freedesktop.locale1",
 142                                    "/org/freedesktop/locale1",
 143                                    map,
 144                                    0,
 145                                    &error,
 146                                    &m,
 147                                    &info);
 148         if (r < 0)
 149                 return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r));
 150
 151         print_overridden_variables();
 152         print_status_info(&info);
 153
 154         return r;
 155 }
 156
 157 static int set_locale(int argc, char **argv, void *userdata) {
 158         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
 159         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 160         sd_bus *bus = userdata;
 161         int r;
 162
 163         assert(bus);
 164
 165         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
 166
 167         r = sd_bus_message_new_method_call(
 168                         bus,
 169                         &m,
 170                         "org.freedesktop.locale1",
 171                         "/org/freedesktop/locale1",
 172                         "org.freedesktop.locale1",
 173                         "SetLocale");
 174         if (r < 0)
 175                 return bus_log_create_error(r);
 176
 177         r = sd_bus_message_append_strv(m, argv + 1);
 178         if (r < 0)
 179                 return bus_log_create_error(r);
 180
 181         r = sd_bus_message_append(m, "b", arg_ask_password);
 182         if (r < 0)
 183                 return bus_log_create_error(r);
 184
 185         r = sd_bus_call(bus, m, 0, &error, NULL);
 186         if (r < 0)
 187                 return log_error_errno(r, "Failed to issue method call: %s", bus_error_message(&error, -r));
 188
 189         return 0;
 190 }
 191
 192 static int list_locales(int argc, char **argv, void *userdata) {
 193         _cleanup_strv_free_ char **l = NULL;
 194         int r;
 195
 196         r = get_locales(&l);
 197         if (r < 0)
 198                 return log_error_errno(r, "Failed to read list of locales: %m");
 199
 200         (void) pager_open(arg_pager_flags);
 201         strv_print(l);
 202
 203         return 0;
 204 }
 205
 206 static int set_vconsole_keymap(int argc, char **argv, void *userdata) {
 207         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 208         const char *map, *toggle_map;
 209         sd_bus *bus = userdata;
 210         int r;
 211
 212         assert(bus);
 213
 214         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
 215
 216         map = argv[1];
 217         toggle_map = argc > 2 ? argv[2] : "";
 218
 219         r = sd_bus_call_method(
 220                         bus,
 221                         "org.freedesktop.locale1",
 222                         "/org/freedesktop/locale1",
 223                         "org.freedesktop.locale1",
 224                         "SetVConsoleKeyboard",
 225                         &error,
 226                         NULL,
 227                         "ssbb", map, toggle_map, arg_convert, arg_ask_password);
 228         if (r < 0)
 229                 return log_error_errno(r, "Failed to set keymap: %s", bus_error_message(&error, -r));
 230
 231         return 0;
 232 }
 233
 234 static int list_vconsole_keymaps(int argc, char **argv, void *userdata) {
 235         _cleanup_strv_free_ char **l = NULL;
 236         int r;
 237
 238         r = get_keymaps(&l);
 239         if (r < 0)
 240                 return log_error_errno(r, "Failed to read list of keymaps: %m");
 241
 242         (void) pager_open(arg_pager_flags);
 243
 244         strv_print(l);
 245
 246         return 0;
 247 }
 248
 249 static int set_x11_keymap(int argc, char **argv, void *userdata) {
 250         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 251         const char *layout, *model, *variant, *options;
 252         sd_bus *bus = userdata;
 253         int r;
 254
 255         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
 256
 257         layout = argv[1];
 258         model = argc > 2 ? argv[2] : "";
 259         variant = argc > 3 ? argv[3] : "";
 260         options = argc > 4 ? argv[4] : "";
 261
 262         r = sd_bus_call_method(
 263                         bus,
 264                         "org.freedesktop.locale1",
 265                         "/org/freedesktop/locale1",
 266                         "org.freedesktop.locale1",
 267                         "SetX11Keyboard",
 268                         &error,
 269                         NULL,
 270                         "ssssbb", layout, model, variant, options,
 271                                   arg_convert, arg_ask_password);
 272         if (r < 0)
 273                 return log_error_errno(r, "Failed to set keymap: %s", bus_error_message(&error, -r));
 274
 275         return 0;
 276 }
 277
 278 static int list_x11_keymaps(int argc, char **argv, void *userdata) {
 279         _cleanup_fclose_ FILE *f = NULL;
 280         _cleanup_strv_free_ char **list = NULL;
 281         enum {
 282                 NONE,
 283                 MODELS,
 284                 LAYOUTS,
 285                 VARIANTS,
 286                 OPTIONS
 287         } state = NONE, look_for;
 288         int r;
 289
 290         f = fopen("/usr/share/X11/xkb/rules/base.lst", "re");
 291         if (!f)
 292                 return log_error_errno(errno, "Failed to open keyboard mapping list. %m");
 293
 294         if (streq(argv[0], "list-x11-keymap-models"))
 295                 look_for = MODELS;
 296         else if (streq(argv[0], "list-x11-keymap-layouts"))
 297                 look_for = LAYOUTS;
 298         else if (streq(argv[0], "list-x11-keymap-variants"))
 299                 look_for = VARIANTS;
 300         else if (streq(argv[0], "list-x11-keymap-options"))
 301                 look_for = OPTIONS;
 302         else
 303                 assert_not_reached("Wrong parameter");
 304
 305         for (;;) {
 306                 _cleanup_free_ char *line = NULL;
 307                 char *l, *w;
 308
 309                 r = read_line(f, LONG_LINE_MAX, &line);
 310                 if (r < 0)
 311                         return log_error_errno(r, "Failed to read keyboard mapping list: %m");
 312                 if (r == 0)
 313                         break;
 314
 315                 l = strstrip(line);
 316
 317                 if (isempty(l))
 318                         continue;
 319
 320                 if (l[0] == '!') {
 321                         if (startswith(l, "! model"))
 322                                 state = MODELS;
 323                         else if (startswith(l, "! layout"))
 324                                 state = LAYOUTS;
 325                         else if (startswith(l, "! variant"))
 326                                 state = VARIANTS;
 327                         else if (startswith(l, "! option"))
 328                                 state = OPTIONS;
 329                         else
 330                                 state = NONE;
 331
 332                         continue;
 333                 }
 334
 335                 if (state != look_for)
 336                         continue;
 337
 338                 w = l + strcspn(l, WHITESPACE);
 339
 340                 if (argc > 1) {
 341                         char *e;
 342
 343                         if (*w == 0)
 344                                 continue;
 345
 346                         *w = 0;
 347                         w++;
 348                         w += strspn(w, WHITESPACE);
 349
 350                         e = strchr(w, ':');
 351                         if (!e)
 352                                 continue;
 353
 354                         *e = 0;
 355
 356                         if (!streq(w, argv[1]))
 357                                 continue;
 358                 } else
 359                         *w = 0;
 360
 361                 r = strv_extend(&list, l);
 362                 if (r < 0)
 363                         return log_oom();
 364         }
 365
 366         if (strv_isempty(list))
 367                 return log_error_errno(SYNTHETIC_ERRNO(ENOENT),
 368                                        "Couldn't find any entries.");
 369
 370         strv_sort(list);
 371         strv_uniq(list);
 372
 373         (void) pager_open(arg_pager_flags);
 374
 375         strv_print(list);
 376         return 0;
 377 }
 378
 379 static int help(void) {
 380         _cleanup_free_ char *link = NULL;
 381         int r;
 382
 383         r = terminal_urlify_man("localectl", "1", &link);
 384         if (r < 0)
 385                 return log_oom();
 386
 387         printf("%s [OPTIONS...] COMMAND ...\n\n"
 388                "Query or change system locale and keyboard settings.\n\n"
 389                "  -h --help                Show this help\n"
 390                "     --version             Show package version\n"
 391                "     --no-pager            Do not pipe output into a pager\n"
 392                "     --no-ask-password     Do not prompt for password\n"
 393                "  -H --host=[USER@]HOST    Operate on remote host\n"
 394                "  -M --machine=CONTAINER   Operate on local container\n"
 395                "     --no-convert          Don't convert keyboard mappings\n\n"
 396                "Commands:\n"
 397                "  status                   Show current locale settings\n"
 398                "  set-locale LOCALE...     Set system locale\n"
 399                "  list-locales             Show known locales\n"
 400                "  set-keymap MAP [MAP]     Set console and X11 keyboard mappings\n"
 401                "  list-keymaps             Show known virtual console keyboard mappings\n"
 402                "  set-x11-keymap LAYOUT [MODEL [VARIANT [OPTIONS]]]\n"
 403                "                           Set X11 and console keyboard mappings\n"
 404                "  list-x11-keymap-models   Show known X11 keyboard mapping models\n"
 405                "  list-x11-keymap-layouts  Show known X11 keyboard mapping layouts\n"
 406                "  list-x11-keymap-variants [LAYOUT]\n"
 407                "                           Show known X11 keyboard mapping variants\n"
 408                "  list-x11-keymap-options  Show known X11 keyboard mapping options\n"
 409                "\nSee the %s for details.\n"
 410                , program_invocation_short_name
 411                , link
 412         );
 413
 414         return 0;
 415 }
 416
 417 static int verb_help(int argc, char **argv, void *userdata) {
 418         return help();
 419 }
 420
 421 static int parse_argv(int argc, char *argv[]) {
 422
 423         enum {
 424                 ARG_VERSION = 0x100,
 425                 ARG_NO_PAGER,
 426                 ARG_NO_CONVERT,
 427                 ARG_NO_ASK_PASSWORD
 428         };
 429
 430         static const struct option options[] = {
 431                 { "help",            no_argument,       NULL, 'h'                 },
 432                 { "version",         no_argument,       NULL, ARG_VERSION         },
 433                 { "no-pager",        no_argument,       NULL, ARG_NO_PAGER        },
 434                 { "host",            required_argument, NULL, 'H'                 },
 435                 { "machine",         required_argument, NULL, 'M'                 },
 436                 { "no-ask-password", no_argument,       NULL, ARG_NO_ASK_PASSWORD },
 437                 { "no-convert",      no_argument,       NULL, ARG_NO_CONVERT      },
 438                 {}
 439         };
 440
 441         int c;
 442
 443         assert(argc >= 0);
 444         assert(argv);
 445
 446         while ((c = getopt_long(argc, argv, "hH:M:", options, NULL)) >= 0)
 447
 448                 switch (c) {
 449
 450                 case 'h':
 451                         return help();
 452
 453                 case ARG_VERSION:
 454                         return version();
 455
 456                 case ARG_NO_CONVERT:
 457                         arg_convert = false;
 458                         break;
 459
 460                 case ARG_NO_PAGER:
 461                         arg_pager_flags |= PAGER_DISABLE;
 462                         break;
 463
 464                 case ARG_NO_ASK_PASSWORD:
 465                         arg_ask_password = false;
 466                         break;
 467
 468                 case 'H':
 469                         arg_transport = BUS_TRANSPORT_REMOTE;
 470                         arg_host = optarg;
 471                         break;
 472
 473                 case 'M':
 474                         arg_transport = BUS_TRANSPORT_MACHINE;
 475                         arg_host = optarg;
 476                         break;
 477
 478                 case '?':
 479                         return -EINVAL;
 480
 481                 default:
 482                         assert_not_reached("Unhandled option");
 483                 }
 484
 485         return 1;
 486 }
 487
 488 static int localectl_main(sd_bus *bus, int argc, char *argv[]) {
 489
 490         static const Verb verbs[] = {
 491                 { "status",                   VERB_ANY, 1,        VERB_DEFAULT, show_status           },
 492                 { "set-locale",               2,        VERB_ANY, 0,            set_locale            },
 493                 { "list-locales",             VERB_ANY, 1,        0,            list_locales          },
 494                 { "set-keymap",               2,        3,        0,            set_vconsole_keymap   },
 495                 { "list-keymaps",             VERB_ANY, 1,        0,            list_vconsole_keymaps },
 496                 { "set-x11-keymap",           2,        5,        0,            set_x11_keymap        },
 497                 { "list-x11-keymap-models",   VERB_ANY, 1,        0,            list_x11_keymaps      },
 498                 { "list-x11-keymap-layouts",  VERB_ANY, 1,        0,            list_x11_keymaps      },
 499                 { "list-x11-keymap-variants", VERB_ANY, 2,        0,            list_x11_keymaps      },
 500                 { "list-x11-keymap-options",  VERB_ANY, 1,        0,            list_x11_keymaps      },
 501                 { "help",                     VERB_ANY, VERB_ANY, 0,            verb_help             }, /* Not documented, but supported since it is created. */
 502                 {}
 503         };
 504
 505         return dispatch_verb(argc, argv, verbs, bus);
 506 }
 507
 508 static int run(int argc, char *argv[]) {
 509         _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
 510         int r;
 511
 512         setlocale(LC_ALL, "");
 513         log_parse_environment();
 514         log_open();
 515
 516         r = parse_argv(argc, argv);
 517         if (r <= 0)
 518                 return r;
 519
 520         r = bus_connect_transport(arg_transport, arg_host, false, &bus);
 521         if (r < 0)
 522                 return log_error_errno(r, "Failed to create bus connection: %m");
 523
 524         return localectl_main(bus, argc, argv);
 525 }
 526
 527 DEFINE_MAIN_FUNCTION(run);