src/locale/localed.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   Copyright 2011 Lennart Poettering
   4   Copyright 2013 Kay Sievers
   5 ***/
   6
   7 #include <errno.h>
   8 #include <string.h>
   9 #include <unistd.h>
  10
  11 #if HAVE_XKBCOMMON
  12 #include <xkbcommon/xkbcommon.h>
  13 #include <dlfcn.h>
  14 #endif
  15
  16 #include "sd-bus.h"
  17
  18 #include "alloc-util.h"
  19 #include "bus-error.h"
  20 #include "bus-message.h"
  21 #include "bus-util.h"
  22 #include "def.h"
  23 #include "keymap-util.h"
  24 #include "locale-util.h"
  25 #include "macro.h"
  26 #include "path-util.h"
  27 #include "selinux-util.h"
  28 #include "string-util.h"
  29 #include "strv.h"
  30 #include "user-util.h"
  31
  32 static Hashmap *polkit_registry = NULL;
  33
  34 static int locale_update_system_manager(Context *c, sd_bus *bus) {
  35         _cleanup_free_ char **l_unset = NULL;
  36         _cleanup_strv_free_ char **l_set = NULL;
  37         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
  38         sd_bus_error error = SD_BUS_ERROR_NULL;
  39         unsigned c_set, c_unset, p;
  40         int r;
  41
  42         assert(bus);
  43
  44         l_unset = new0(char*, _VARIABLE_LC_MAX);
  45         if (!l_unset)
  46                 return -ENOMEM;
  47
  48         l_set = new0(char*, _VARIABLE_LC_MAX);
  49         if (!l_set)
  50                 return -ENOMEM;
  51
  52         for (p = 0, c_set = 0, c_unset = 0; p < _VARIABLE_LC_MAX; p++) {
  53                 const char *name;
  54
  55                 name = locale_variable_to_string(p);
  56                 assert(name);
  57
  58                 if (isempty(c->locale[p]))
  59                         l_unset[c_set++] = (char*) name;
  60                 else {
  61                         char *s;
  62
  63                         if (asprintf(&s, "%s=%s", name, c->locale[p]) < 0)
  64                                 return -ENOMEM;
  65
  66                         l_set[c_unset++] = s;
  67                 }
  68         }
  69
  70         assert(c_set + c_unset == _VARIABLE_LC_MAX);
  71         r = sd_bus_message_new_method_call(bus, &m,
  72                         "org.freedesktop.systemd1",
  73                         "/org/freedesktop/systemd1",
  74                         "org.freedesktop.systemd1.Manager",
  75                         "UnsetAndSetEnvironment");
  76         if (r < 0)
  77                 return r;
  78
  79         r = sd_bus_message_append_strv(m, l_unset);
  80         if (r < 0)
  81                 return r;
  82
  83         r = sd_bus_message_append_strv(m, l_set);
  84         if (r < 0)
  85                 return r;
  86
  87         r = sd_bus_call(bus, m, 0, &error, NULL);
  88         if (r < 0)
  89                 log_error_errno(r, "Failed to update the manager environment, ignoring: %m");
  90
  91         return 0;
  92 }
  93
  94 static int vconsole_reload(sd_bus *bus) {
  95         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
  96         int r;
  97
  98         assert(bus);
  99
 100         r = sd_bus_call_method(bus,
 101                         "org.freedesktop.systemd1",
 102                         "/org/freedesktop/systemd1",
 103                         "org.freedesktop.systemd1.Manager",
 104                         "RestartUnit",
 105                         &error,
 106                         NULL,
 107                         "ss", "systemd-vconsole-setup.service", "replace");
 108
 109         if (r < 0)
 110                 log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
 111         return r;
 112 }
 113
 114 static int vconsole_convert_to_x11_and_emit(Context *c, sd_bus_message *m) {
 115         int r;
 116
 117         assert(m);
 118
 119         r = x11_read_data(c, m);
 120         if (r < 0)
 121                 return r;
 122
 123         r = vconsole_convert_to_x11(c);
 124         if (r <= 0)
 125                 return r;
 126
 127         /* modified */
 128         r = x11_write_data(c);
 129         if (r < 0)
 130                 return log_error_errno(r, "Failed to write X11 keyboard layout: %m");
 131
 132         sd_bus_emit_properties_changed(sd_bus_message_get_bus(m),
 133                                        "/org/freedesktop/locale1",
 134                                        "org.freedesktop.locale1",
 135                                        "X11Layout", "X11Model", "X11Variant", "X11Options", NULL);
 136
 137         return 1;
 138 }
 139
 140 static int x11_convert_to_vconsole_and_emit(Context *c, sd_bus_message *m) {
 141         int r;
 142
 143         assert(m);
 144
 145         r = vconsole_read_data(c, m);
 146         if (r < 0)
 147                 return r;
 148
 149         r = x11_convert_to_vconsole(c);
 150         if (r <= 0)
 151                 return r;
 152
 153         /* modified */
 154         r = vconsole_write_data(c);
 155         if (r < 0)
 156                 log_error_errno(r, "Failed to save virtual console keymap: %m");
 157
 158         sd_bus_emit_properties_changed(sd_bus_message_get_bus(m),
 159                                        "/org/freedesktop/locale1",
 160                                        "org.freedesktop.locale1",
 161                                        "VConsoleKeymap", "VConsoleKeymapToggle", NULL);
 162
 163         return vconsole_reload(sd_bus_message_get_bus(m));
 164 }
 165
 166 static int property_get_locale(
 167                 sd_bus *bus,
 168                 const char *path,
 169                 const char *interface,
 170                 const char *property,
 171                 sd_bus_message *reply,
 172                 void *userdata,
 173                 sd_bus_error *error) {
 174
 175         Context *c = userdata;
 176         _cleanup_strv_free_ char **l = NULL;
 177         int p, q, r;
 178
 179         r = locale_read_data(c, reply);
 180         if (r < 0)
 181                 return r;
 182
 183         l = new0(char*, _VARIABLE_LC_MAX+1);
 184         if (!l)
 185                 return -ENOMEM;
 186
 187         for (p = 0, q = 0; p < _VARIABLE_LC_MAX; p++) {
 188                 char *t;
 189                 const char *name;
 190
 191                 name = locale_variable_to_string(p);
 192                 assert(name);
 193
 194                 if (isempty(c->locale[p]))
 195                         continue;
 196
 197                 if (asprintf(&t, "%s=%s", name, c->locale[p]) < 0)
 198                         return -ENOMEM;
 199
 200                 l[q++] = t;
 201         }
 202
 203         return sd_bus_message_append_strv(reply, l);
 204 }
 205
 206 static int property_get_vconsole(
 207                 sd_bus *bus,
 208                 const char *path,
 209                 const char *interface,
 210                 const char *property,
 211                 sd_bus_message *reply,
 212                 void *userdata,
 213                 sd_bus_error *error) {
 214
 215         Context *c = userdata;
 216         int r;
 217
 218         r = vconsole_read_data(c, reply);
 219         if (r < 0)
 220                 return r;
 221
 222         if (streq(property, "VConsoleKeymap"))
 223                 return sd_bus_message_append_basic(reply, 's', c->vc_keymap);
 224         else if (streq(property, "VConsoleKeymapToggle"))
 225                 return sd_bus_message_append_basic(reply, 's', c->vc_keymap_toggle);
 226
 227         return -EINVAL;
 228 }
 229
 230 static int property_get_xkb(
 231                 sd_bus *bus,
 232                 const char *path,
 233                 const char *interface,
 234                 const char *property,
 235                 sd_bus_message *reply,
 236                 void *userdata,
 237                 sd_bus_error *error) {
 238
 239         Context *c = userdata;
 240         int r;
 241
 242         r = x11_read_data(c, reply);
 243         if (r < 0)
 244                 return r;
 245
 246         if (streq(property, "X11Layout"))
 247                 return sd_bus_message_append_basic(reply, 's', c->x11_layout);
 248         else if (streq(property, "X11Model"))
 249                 return sd_bus_message_append_basic(reply, 's', c->x11_model);
 250         else if (streq(property, "X11Variant"))
 251                 return sd_bus_message_append_basic(reply, 's', c->x11_variant);
 252         else if (streq(property, "X11Options"))
 253                 return sd_bus_message_append_basic(reply, 's', c->x11_options);
 254
 255         return -EINVAL;
 256 }
 257
 258 static void locale_free(char ***l) {
 259         int p;
 260
 261         for (p = 0; p < _VARIABLE_LC_MAX; p++)
 262                 (*l)[p] = mfree((*l)[p]);
 263 }
 264
 265 static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *error) {
 266         Context *c = userdata;
 267         _cleanup_strv_free_ char **settings = NULL, **l = NULL;
 268         char *new_locale[_VARIABLE_LC_MAX] = {}, **i;
 269         _cleanup_(locale_free) _unused_ char **dummy = new_locale;
 270         bool modified = false;
 271         int interactive, p, r;
 272
 273         assert(m);
 274         assert(c);
 275
 276         r = bus_message_read_strv_extend(m, &l);
 277         if (r < 0)
 278                 return r;
 279
 280         r = sd_bus_message_read_basic(m, 'b', &interactive);
 281         if (r < 0)
 282                 return r;
 283
 284         /* If single locale without variable name is provided, then we assume it is LANG=. */
 285         if (strv_length(l) == 1 && !strchr(*l, '=')) {
 286                 if (!locale_is_valid(*l))
 287                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid Locale data.");
 288
 289                 new_locale[VARIABLE_LANG] = strdup(*l);
 290                 if (!new_locale[VARIABLE_LANG])
 291                         return -ENOMEM;
 292
 293                 l = strv_free(l);
 294         }
 295
 296         /* Check whether a variable is valid */
 297         STRV_FOREACH(i, l) {
 298                 bool valid = false;
 299
 300                 for (p = 0; p < _VARIABLE_LC_MAX; p++) {
 301                         size_t k;
 302                         const char *name;
 303
 304                         name = locale_variable_to_string(p);
 305                         assert(name);
 306
 307                         k = strlen(name);
 308                         if (startswith(*i, name) &&
 309                             (*i)[k] == '=' &&
 310                             locale_is_valid((*i) + k + 1)) {
 311                                 valid = true;
 312
 313                                 new_locale[p] = strdup((*i) + k + 1);
 314                                 if (!new_locale[p])
 315                                         return -ENOMEM;
 316
 317                                 break;
 318                         }
 319                 }
 320
 321                 if (!valid)
 322                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid Locale data.");
 323         }
 324
 325         /* If LANG was specified, but not LANGUAGE, check if we should
 326          * set it based on the language fallback table. */
 327         if (!isempty(new_locale[VARIABLE_LANG]) &&
 328             isempty(new_locale[VARIABLE_LANGUAGE])) {
 329                 _cleanup_free_ char *language = NULL;
 330
 331                 (void) find_language_fallback(new_locale[VARIABLE_LANG], &language);
 332                 if (language) {
 333                         log_debug("Converted LANG=%s to LANGUAGE=%s", new_locale[VARIABLE_LANG], language);
 334                         free_and_replace(new_locale[VARIABLE_LANGUAGE], language);
 335                 }
 336         }
 337
 338         r = locale_read_data(c, m);
 339         if (r < 0) {
 340                 log_error_errno(r, "Failed to read locale data: %m");
 341                 return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to read locale data");
 342         }
 343
 344         /* Merge with the current settings */
 345         for (p = 0; p < _VARIABLE_LC_MAX; p++)
 346                 if (!isempty(c->locale[p]) && isempty(new_locale[p])) {
 347                         new_locale[p] = strdup(c->locale[p]);
 348                         if (!new_locale[p])
 349                                 return -ENOMEM;
 350                 }
 351
 352         locale_simplify(new_locale);
 353
 354         for (p = 0; p < _VARIABLE_LC_MAX; p++)
 355                 if (!streq_ptr(c->locale[p], new_locale[p])) {
 356                         modified = true;
 357                         break;
 358                 }
 359
 360         if (!modified) {
 361                 log_debug("Locale settings were not modified.");
 362                 return sd_bus_reply_method_return(m, NULL);
 363         }
 364
 365         r = bus_verify_polkit_async(
 366                         m,
 367                         CAP_SYS_ADMIN,
 368                         "org.freedesktop.locale1.set-locale",
 369                         NULL,
 370                         interactive,
 371                         UID_INVALID,
 372                         &polkit_registry,
 373                         error);
 374         if (r < 0)
 375                 return r;
 376         if (r == 0)
 377                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 378
 379         for (p = 0; p < _VARIABLE_LC_MAX; p++)
 380                 free_and_replace(c->locale[p], new_locale[p]);
 381
 382         r = locale_write_data(c, &settings);
 383         if (r < 0) {
 384                 log_error_errno(r, "Failed to set locale: %m");
 385                 return sd_bus_error_set_errnof(error, r, "Failed to set locale: %m");
 386         }
 387
 388         (void) locale_update_system_manager(c, sd_bus_message_get_bus(m));
 389
 390         if (settings) {
 391                 _cleanup_free_ char *line;
 392
 393                 line = strv_join(settings, ", ");
 394                 log_info("Changed locale to %s.", strnull(line));
 395         } else
 396                 log_info("Changed locale to unset.");
 397
 398         (void) sd_bus_emit_properties_changed(
 399                         sd_bus_message_get_bus(m),
 400                         "/org/freedesktop/locale1",
 401                         "org.freedesktop.locale1",
 402                         "Locale", NULL);
 403
 404         return sd_bus_reply_method_return(m, NULL);
 405 }
 406
 407 static int method_set_vc_keyboard(sd_bus_message *m, void *userdata, sd_bus_error *error) {
 408         Context *c = userdata;
 409         const char *keymap, *keymap_toggle;
 410         int convert, interactive, r;
 411
 412         assert(m);
 413         assert(c);
 414
 415         r = sd_bus_message_read(m, "ssbb", &keymap, &keymap_toggle, &convert, &interactive);
 416         if (r < 0)
 417                 return r;
 418
 419         keymap = empty_to_null(keymap);
 420         keymap_toggle = empty_to_null(keymap_toggle);
 421
 422         r = vconsole_read_data(c, m);
 423         if (r < 0) {
 424                 log_error_errno(r, "Failed to read virtual console keymap data: %m");
 425                 return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to read virtual console keymap data");
 426         }
 427
 428         if (streq_ptr(keymap, c->vc_keymap) &&
 429             streq_ptr(keymap_toggle, c->vc_keymap_toggle))
 430                 return sd_bus_reply_method_return(m, NULL);
 431
 432         if ((keymap && (!filename_is_valid(keymap) || !string_is_safe(keymap))) ||
 433             (keymap_toggle && (!filename_is_valid(keymap_toggle) || !string_is_safe(keymap_toggle))))
 434                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Received invalid keymap data");
 435
 436         r = bus_verify_polkit_async(
 437                         m,
 438                         CAP_SYS_ADMIN,
 439                         "org.freedesktop.locale1.set-keyboard",
 440                         NULL,
 441                         interactive,
 442                         UID_INVALID,
 443                         &polkit_registry,
 444                         error);
 445         if (r < 0)
 446                 return r;
 447         if (r == 0)
 448                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 449
 450         if (free_and_strdup(&c->vc_keymap, keymap) < 0 ||
 451             free_and_strdup(&c->vc_keymap_toggle, keymap_toggle) < 0)
 452                 return -ENOMEM;
 453
 454         r = vconsole_write_data(c);
 455         if (r < 0) {
 456                 log_error_errno(r, "Failed to set virtual console keymap: %m");
 457                 return sd_bus_error_set_errnof(error, r, "Failed to set virtual console keymap: %m");
 458         }
 459
 460         log_info("Changed virtual console keymap to '%s' toggle '%s'",
 461                  strempty(c->vc_keymap), strempty(c->vc_keymap_toggle));
 462
 463         r = vconsole_reload(sd_bus_message_get_bus(m));
 464         if (r < 0)
 465                 log_error_errno(r, "Failed to request keymap reload: %m");
 466
 467         (void) sd_bus_emit_properties_changed(
 468                         sd_bus_message_get_bus(m),
 469                         "/org/freedesktop/locale1",
 470                         "org.freedesktop.locale1",
 471                         "VConsoleKeymap", "VConsoleKeymapToggle", NULL);
 472
 473         if (convert) {
 474                 r = vconsole_convert_to_x11_and_emit(c, m);
 475                 if (r < 0)
 476                         log_error_errno(r, "Failed to convert keymap data: %m");
 477         }
 478
 479         return sd_bus_reply_method_return(m, NULL);
 480 }
 481
 482 #if HAVE_XKBCOMMON
 483
 484 _printf_(3, 0)
 485 static void log_xkb(struct xkb_context *ctx, enum xkb_log_level lvl, const char *format, va_list args) {
 486         const char *fmt;
 487
 488         fmt = strjoina("libxkbcommon: ", format);
 489 #pragma GCC diagnostic push
 490 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
 491         log_internalv(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, fmt, args);
 492 #pragma GCC diagnostic pop
 493 }
 494
 495 #define LOAD_SYMBOL(symbol, dl, name)                                   \
 496         ({                                                              \
 497                 (symbol) = (typeof(symbol)) dlvsym((dl), (name), "V_0.5.0"); \
 498                 (symbol) ? 0 : -EOPNOTSUPP;                             \
 499         })
 500
 501 static int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {
 502
 503         /* We dlopen() the library in order to make the dependency soft. The library (and what it pulls in) is huge
 504          * after all, hence let's support XKB maps when the library is around, and refuse otherwise. The function
 505          * pointers to the shared library are below: */
 506
 507         struct xkb_context* (*symbol_xkb_context_new)(enum xkb_context_flags flags) = NULL;
 508         void (*symbol_xkb_context_unref)(struct xkb_context *context) = NULL;
 509         void (*symbol_xkb_context_set_log_fn)(struct xkb_context *context, void (*log_fn)(struct xkb_context *context, enum xkb_log_level level, const char *format, va_list args)) = NULL;
 510         struct xkb_keymap* (*symbol_xkb_keymap_new_from_names)(struct xkb_context *context, const struct xkb_rule_names *names, enum xkb_keymap_compile_flags flags) = NULL;
 511         void (*symbol_xkb_keymap_unref)(struct xkb_keymap *keymap) = NULL;
 512
 513         const struct xkb_rule_names rmlvo = {
 514                 .model          = model,
 515                 .layout         = layout,
 516                 .variant        = variant,
 517                 .options        = options,
 518         };
 519         struct xkb_context *ctx = NULL;
 520         struct xkb_keymap *km = NULL;
 521         void *dl;
 522         int r;
 523
 524         /* Compile keymap from RMLVO information to check out its validity */
 525
 526         dl = dlopen("libxkbcommon.so.0", RTLD_LAZY);
 527         if (!dl)
 528                 return -EOPNOTSUPP;
 529
 530         r = LOAD_SYMBOL(symbol_xkb_context_new, dl, "xkb_context_new");
 531         if (r < 0)
 532                 goto finish;
 533
 534         r = LOAD_SYMBOL(symbol_xkb_context_unref, dl, "xkb_context_unref");
 535         if (r < 0)
 536                 goto finish;
 537
 538         r = LOAD_SYMBOL(symbol_xkb_context_set_log_fn, dl, "xkb_context_set_log_fn");
 539         if (r < 0)
 540                 goto finish;
 541
 542         r = LOAD_SYMBOL(symbol_xkb_keymap_new_from_names, dl, "xkb_keymap_new_from_names");
 543         if (r < 0)
 544                 goto finish;
 545
 546         r = LOAD_SYMBOL(symbol_xkb_keymap_unref, dl, "xkb_keymap_unref");
 547         if (r < 0)
 548                 goto finish;
 549
 550         ctx = symbol_xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES);
 551         if (!ctx) {
 552                 r = -ENOMEM;
 553                 goto finish;
 554         }
 555
 556         symbol_xkb_context_set_log_fn(ctx, log_xkb);
 557
 558         km = symbol_xkb_keymap_new_from_names(ctx, &rmlvo, XKB_KEYMAP_COMPILE_NO_FLAGS);
 559         if (!km) {
 560                 r = -EINVAL;
 561                 goto finish;
 562         }
 563
 564         r = 0;
 565
 566 finish:
 567         if (symbol_xkb_keymap_unref && km)
 568                 symbol_xkb_keymap_unref(km);
 569
 570         if (symbol_xkb_context_unref && ctx)
 571                 symbol_xkb_context_unref(ctx);
 572
 573         (void) dlclose(dl);
 574         return r;
 575 }
 576
 577 #else
 578
 579 static int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {
 580         return 0;
 581 }
 582
 583 #endif
 584
 585 static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_error *error) {
 586         Context *c = userdata;
 587         const char *layout, *model, *variant, *options;
 588         int convert, interactive, r;
 589
 590         assert(m);
 591         assert(c);
 592
 593         r = sd_bus_message_read(m, "ssssbb", &layout, &model, &variant, &options, &convert, &interactive);
 594         if (r < 0)
 595                 return r;
 596
 597         layout = empty_to_null(layout);
 598         model = empty_to_null(model);
 599         variant = empty_to_null(variant);
 600         options = empty_to_null(options);
 601
 602         r = x11_read_data(c, m);
 603         if (r < 0) {
 604                 log_error_errno(r, "Failed to read x11 keyboard layout data: %m");
 605                 return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to read x11 keyboard layout data");
 606         }
 607
 608         if (streq_ptr(layout, c->x11_layout) &&
 609             streq_ptr(model, c->x11_model) &&
 610             streq_ptr(variant, c->x11_variant) &&
 611             streq_ptr(options, c->x11_options))
 612                 return sd_bus_reply_method_return(m, NULL);
 613
 614         if ((layout && !string_is_safe(layout)) ||
 615             (model && !string_is_safe(model)) ||
 616             (variant && !string_is_safe(variant)) ||
 617             (options && !string_is_safe(options)))
 618                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Received invalid keyboard data");
 619
 620         r = verify_xkb_rmlvo(model, layout, variant, options);
 621         if (r < 0) {
 622                 log_error_errno(r, "Cannot compile XKB keymap for new x11 keyboard layout ('%s' / '%s' / '%s' / '%s'): %m",
 623                                 strempty(model), strempty(layout), strempty(variant), strempty(options));
 624
 625                 if (r == -EOPNOTSUPP)
 626                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Local keyboard configuration not supported on this system.");
 627
 628                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Specified keymap cannot be compiled, refusing as invalid.");
 629         }
 630
 631         r = bus_verify_polkit_async(
 632                         m,
 633                         CAP_SYS_ADMIN,
 634                         "org.freedesktop.locale1.set-keyboard",
 635                         NULL,
 636                         interactive,
 637                         UID_INVALID,
 638                         &polkit_registry,
 639                         error);
 640         if (r < 0)
 641                 return r;
 642         if (r == 0)
 643                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 644
 645         if (free_and_strdup(&c->x11_layout, layout) < 0 ||
 646             free_and_strdup(&c->x11_model, model) < 0 ||
 647             free_and_strdup(&c->x11_variant, variant) < 0 ||
 648             free_and_strdup(&c->x11_options, options) < 0)
 649                 return -ENOMEM;
 650
 651         r = x11_write_data(c);
 652         if (r < 0) {
 653                 log_error_errno(r, "Failed to set X11 keyboard layout: %m");
 654                 return sd_bus_error_set_errnof(error, r, "Failed to set X11 keyboard layout: %m");
 655         }
 656
 657         log_info("Changed X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
 658                  strempty(c->x11_layout),
 659                  strempty(c->x11_model),
 660                  strempty(c->x11_variant),
 661                  strempty(c->x11_options));
 662
 663         (void) sd_bus_emit_properties_changed(
 664                         sd_bus_message_get_bus(m),
 665                         "/org/freedesktop/locale1",
 666                         "org.freedesktop.locale1",
 667                         "X11Layout", "X11Model", "X11Variant", "X11Options", NULL);
 668
 669         if (convert) {
 670                 r = x11_convert_to_vconsole_and_emit(c, m);
 671                 if (r < 0)
 672                         log_error_errno(r, "Failed to convert keymap data: %m");
 673         }
 674
 675         return sd_bus_reply_method_return(m, NULL);
 676 }
 677
 678 static const sd_bus_vtable locale_vtable[] = {
 679         SD_BUS_VTABLE_START(0),
 680         SD_BUS_PROPERTY("Locale", "as", property_get_locale, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 681         SD_BUS_PROPERTY("X11Layout", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 682         SD_BUS_PROPERTY("X11Model", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 683         SD_BUS_PROPERTY("X11Variant", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 684         SD_BUS_PROPERTY("X11Options", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 685         SD_BUS_PROPERTY("VConsoleKeymap", "s", property_get_vconsole, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 686         SD_BUS_PROPERTY("VConsoleKeymapToggle", "s", property_get_vconsole, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 687         SD_BUS_METHOD("SetLocale", "asb", NULL, method_set_locale, SD_BUS_VTABLE_UNPRIVILEGED),
 688         SD_BUS_METHOD("SetVConsoleKeyboard", "ssbb", NULL, method_set_vc_keyboard, SD_BUS_VTABLE_UNPRIVILEGED),
 689         SD_BUS_METHOD("SetX11Keyboard", "ssssbb", NULL, method_set_x11_keyboard, SD_BUS_VTABLE_UNPRIVILEGED),
 690         SD_BUS_VTABLE_END
 691 };
 692
 693 static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) {
 694         _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
 695         int r;
 696
 697         assert(c);
 698         assert(event);
 699         assert(_bus);
 700
 701         r = sd_bus_default_system(&bus);
 702         if (r < 0)
 703                 return log_error_errno(r, "Failed to get system bus connection: %m");
 704
 705         r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/locale1", "org.freedesktop.locale1", locale_vtable, c);
 706         if (r < 0)
 707                 return log_error_errno(r, "Failed to register object: %m");
 708
 709         r = sd_bus_request_name_async(bus, NULL, "org.freedesktop.locale1", 0, NULL, NULL);
 710         if (r < 0)
 711                 return log_error_errno(r, "Failed to request name: %m");
 712
 713         r = sd_bus_attach_event(bus, event, 0);
 714         if (r < 0)
 715                 return log_error_errno(r, "Failed to attach bus to event loop: %m");
 716
 717         *_bus = TAKE_PTR(bus);
 718
 719         return 0;
 720 }
 721
 722 int main(int argc, char *argv[]) {
 723         _cleanup_(context_free) Context context = {
 724                 .locale_mtime = USEC_INFINITY,
 725                 .vc_mtime = USEC_INFINITY,
 726                 .x11_mtime = USEC_INFINITY,
 727         };
 728         _cleanup_(sd_event_unrefp) sd_event *event = NULL;
 729         _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
 730         int r;
 731
 732         log_set_target(LOG_TARGET_AUTO);
 733         log_parse_environment();
 734         log_open();
 735
 736         umask(0022);
 737         mac_selinux_init();
 738
 739         if (argc != 1) {
 740                 log_error("This program takes no arguments.");
 741                 r = -EINVAL;
 742                 goto finish;
 743         }
 744
 745         r = sd_event_default(&event);
 746         if (r < 0) {
 747                 log_error_errno(r, "Failed to allocate event loop: %m");
 748                 goto finish;
 749         }
 750
 751         sd_event_set_watchdog(event, true);
 752
 753         r = connect_bus(&context, event, &bus);
 754         if (r < 0)
 755                 goto finish;
 756
 757         r = bus_event_loop_with_idle(event, bus, "org.freedesktop.locale1", DEFAULT_EXIT_USEC, NULL, NULL);
 758         if (r < 0)
 759                 log_error_errno(r, "Failed to run event loop: %m");
 760
 761 finish:
 762         bus_verify_polkit_async_registry_free(polkit_registry);
 763
 764         return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
 765 }