src/locale/localed.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2011 Lennart Poettering
   6   Copyright 2013 Kay Sievers
   7 ***/
   8
   9 #include <errno.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12
  13 #if HAVE_XKBCOMMON
  14 #include <xkbcommon/xkbcommon.h>
  15 #include <dlfcn.h>
  16 #endif
  17
  18 #include "sd-bus.h"
  19
  20 #include "alloc-util.h"
  21 #include "bus-error.h"
  22 #include "bus-message.h"
  23 #include "bus-util.h"
  24 #include "def.h"
  25 #include "keymap-util.h"
  26 #include "locale-util.h"
  27 #include "macro.h"
  28 #include "path-util.h"
  29 #include "selinux-util.h"
  30 #include "string-util.h"
  31 #include "strv.h"
  32 #include "user-util.h"
  33
  34 static Hashmap *polkit_registry = NULL;
  35
  36 static int locale_update_system_manager(Context *c, sd_bus *bus) {
  37         _cleanup_free_ char **l_unset = NULL;
  38         _cleanup_strv_free_ char **l_set = NULL;
  39         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
  40         sd_bus_error error = SD_BUS_ERROR_NULL;
  41         unsigned c_set, c_unset, p;
  42         int r;
  43
  44         assert(bus);
  45
  46         l_unset = new0(char*, _VARIABLE_LC_MAX);
  47         if (!l_unset)
  48                 return -ENOMEM;
  49
  50         l_set = new0(char*, _VARIABLE_LC_MAX);
  51         if (!l_set)
  52                 return -ENOMEM;
  53
  54         for (p = 0, c_set = 0, c_unset = 0; p < _VARIABLE_LC_MAX; p++) {
  55                 const char *name;
  56
  57                 name = locale_variable_to_string(p);
  58                 assert(name);
  59
  60                 if (isempty(c->locale[p]))
  61                         l_unset[c_set++] = (char*) name;
  62                 else {
  63                         char *s;
  64
  65                         if (asprintf(&s, "%s=%s", name, c->locale[p]) < 0)
  66                                 return -ENOMEM;
  67
  68                         l_set[c_unset++] = s;
  69                 }
  70         }
  71
  72         assert(c_set + c_unset == _VARIABLE_LC_MAX);
  73         r = sd_bus_message_new_method_call(bus, &m,
  74                         "org.freedesktop.systemd1",
  75                         "/org/freedesktop/systemd1",
  76                         "org.freedesktop.systemd1.Manager",
  77                         "UnsetAndSetEnvironment");
  78         if (r < 0)
  79                 return r;
  80
  81         r = sd_bus_message_append_strv(m, l_unset);
  82         if (r < 0)
  83                 return r;
  84
  85         r = sd_bus_message_append_strv(m, l_set);
  86         if (r < 0)
  87                 return r;
  88
  89         r = sd_bus_call(bus, m, 0, &error, NULL);
  90         if (r < 0)
  91                 log_error_errno(r, "Failed to update the manager environment, ignoring: %m");
  92
  93         return 0;
  94 }
  95
  96 static int vconsole_reload(sd_bus *bus) {
  97         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
  98         int r;
  99
 100         assert(bus);
 101
 102         r = sd_bus_call_method(bus,
 103                         "org.freedesktop.systemd1",
 104                         "/org/freedesktop/systemd1",
 105                         "org.freedesktop.systemd1.Manager",
 106                         "RestartUnit",
 107                         &error,
 108                         NULL,
 109                         "ss", "systemd-vconsole-setup.service", "replace");
 110
 111         if (r < 0)
 112                 log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
 113         return r;
 114 }
 115
 116 static int vconsole_convert_to_x11_and_emit(Context *c, sd_bus_message *m) {
 117         int r;
 118
 119         assert(m);
 120
 121         r = x11_read_data(c, m);
 122         if (r < 0)
 123                 return r;
 124
 125         r = vconsole_convert_to_x11(c);
 126         if (r <= 0)
 127                 return r;
 128
 129         /* modified */
 130         r = x11_write_data(c);
 131         if (r < 0)
 132                 return log_error_errno(r, "Failed to write X11 keyboard layout: %m");
 133
 134         sd_bus_emit_properties_changed(sd_bus_message_get_bus(m),
 135                                        "/org/freedesktop/locale1",
 136                                        "org.freedesktop.locale1",
 137                                        "X11Layout", "X11Model", "X11Variant", "X11Options", NULL);
 138
 139         return 1;
 140 }
 141
 142 static int x11_convert_to_vconsole_and_emit(Context *c, sd_bus_message *m) {
 143         int r;
 144
 145         assert(m);
 146
 147         r = vconsole_read_data(c, m);
 148         if (r < 0)
 149                 return r;
 150
 151         r = x11_convert_to_vconsole(c);
 152         if (r <= 0)
 153                 return r;
 154
 155         /* modified */
 156         r = vconsole_write_data(c);
 157         if (r < 0)
 158                 log_error_errno(r, "Failed to save virtual console keymap: %m");
 159
 160         sd_bus_emit_properties_changed(sd_bus_message_get_bus(m),
 161                                        "/org/freedesktop/locale1",
 162                                        "org.freedesktop.locale1",
 163                                        "VConsoleKeymap", "VConsoleKeymapToggle", NULL);
 164
 165         return vconsole_reload(sd_bus_message_get_bus(m));
 166 }
 167
 168 static int property_get_locale(
 169                 sd_bus *bus,
 170                 const char *path,
 171                 const char *interface,
 172                 const char *property,
 173                 sd_bus_message *reply,
 174                 void *userdata,
 175                 sd_bus_error *error) {
 176
 177         Context *c = userdata;
 178         _cleanup_strv_free_ char **l = NULL;
 179         int p, q, r;
 180
 181         r = locale_read_data(c, reply);
 182         if (r < 0)
 183                 return r;
 184
 185         l = new0(char*, _VARIABLE_LC_MAX+1);
 186         if (!l)
 187                 return -ENOMEM;
 188
 189         for (p = 0, q = 0; p < _VARIABLE_LC_MAX; p++) {
 190                 char *t;
 191                 const char *name;
 192
 193                 name = locale_variable_to_string(p);
 194                 assert(name);
 195
 196                 if (isempty(c->locale[p]))
 197                         continue;
 198
 199                 if (asprintf(&t, "%s=%s", name, c->locale[p]) < 0)
 200                         return -ENOMEM;
 201
 202                 l[q++] = t;
 203         }
 204
 205         return sd_bus_message_append_strv(reply, l);
 206 }
 207
 208 static int property_get_vconsole(
 209                 sd_bus *bus,
 210                 const char *path,
 211                 const char *interface,
 212                 const char *property,
 213                 sd_bus_message *reply,
 214                 void *userdata,
 215                 sd_bus_error *error) {
 216
 217         Context *c = userdata;
 218         int r;
 219
 220         r = vconsole_read_data(c, reply);
 221         if (r < 0)
 222                 return r;
 223
 224         if (streq(property, "VConsoleKeymap"))
 225                 return sd_bus_message_append_basic(reply, 's', c->vc_keymap);
 226         else if (streq(property, "VConsoleKeymapToggle"))
 227                 return sd_bus_message_append_basic(reply, 's', c->vc_keymap_toggle);
 228
 229         return -EINVAL;
 230 }
 231
 232 static int property_get_xkb(
 233                 sd_bus *bus,
 234                 const char *path,
 235                 const char *interface,
 236                 const char *property,
 237                 sd_bus_message *reply,
 238                 void *userdata,
 239                 sd_bus_error *error) {
 240
 241         Context *c = userdata;
 242         int r;
 243
 244         r = x11_read_data(c, reply);
 245         if (r < 0)
 246                 return r;
 247
 248         if (streq(property, "X11Layout"))
 249                 return sd_bus_message_append_basic(reply, 's', c->x11_layout);
 250         else if (streq(property, "X11Model"))
 251                 return sd_bus_message_append_basic(reply, 's', c->x11_model);
 252         else if (streq(property, "X11Variant"))
 253                 return sd_bus_message_append_basic(reply, 's', c->x11_variant);
 254         else if (streq(property, "X11Options"))
 255                 return sd_bus_message_append_basic(reply, 's', c->x11_options);
 256
 257         return -EINVAL;
 258 }
 259
 260 static void locale_free(char ***l) {
 261         int p;
 262
 263         for (p = 0; p < _VARIABLE_LC_MAX; p++)
 264                 (*l)[p] = mfree((*l)[p]);
 265 }
 266
 267 static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *error) {
 268         Context *c = userdata;
 269         _cleanup_strv_free_ char **settings = NULL, **l = NULL;
 270         char *new_locale[_VARIABLE_LC_MAX] = {}, **i;
 271         _cleanup_(locale_free) _unused_ char **dummy = new_locale;
 272         bool modified = false;
 273         int interactive, p, r;
 274
 275         assert(m);
 276         assert(c);
 277
 278         r = bus_message_read_strv_extend(m, &l);
 279         if (r < 0)
 280                 return r;
 281
 282         r = sd_bus_message_read_basic(m, 'b', &interactive);
 283         if (r < 0)
 284                 return r;
 285
 286         /* If single locale without variable name is provided, then we assume it is LANG=. */
 287         if (strv_length(l) == 1 && !strchr(*l, '=')) {
 288                 if (!locale_is_valid(*l))
 289                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid Locale data.");
 290
 291                 new_locale[VARIABLE_LANG] = strdup(*l);
 292                 if (!new_locale[VARIABLE_LANG])
 293                         return -ENOMEM;
 294
 295                 l = strv_free(l);
 296         }
 297
 298         /* Check whether a variable is valid */
 299         STRV_FOREACH(i, l) {
 300                 bool valid = false;
 301
 302                 for (p = 0; p < _VARIABLE_LC_MAX; p++) {
 303                         size_t k;
 304                         const char *name;
 305
 306                         name = locale_variable_to_string(p);
 307                         assert(name);
 308
 309                         k = strlen(name);
 310                         if (startswith(*i, name) &&
 311                             (*i)[k] == '=' &&
 312                             locale_is_valid((*i) + k + 1)) {
 313                                 valid = true;
 314
 315                                 new_locale[p] = strdup((*i) + k + 1);
 316                                 if (!new_locale[p])
 317                                         return -ENOMEM;
 318
 319                                 break;
 320                         }
 321                 }
 322
 323                 if (!valid)
 324                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid Locale data.");
 325         }
 326
 327         /* If LANG was specified, but not LANGUAGE, check if we should
 328          * set it based on the language fallback table. */
 329         if (!isempty(new_locale[VARIABLE_LANG]) &&
 330             isempty(new_locale[VARIABLE_LANGUAGE])) {
 331                 _cleanup_free_ char *language = NULL;
 332
 333                 (void) find_language_fallback(new_locale[VARIABLE_LANG], &language);
 334                 if (language) {
 335                         log_debug("Converted LANG=%s to LANGUAGE=%s", new_locale[VARIABLE_LANG], language);
 336                         free_and_replace(new_locale[VARIABLE_LANGUAGE], language);
 337                 }
 338         }
 339
 340         r = locale_read_data(c, m);
 341         if (r < 0) {
 342                 log_error_errno(r, "Failed to read locale data: %m");
 343                 return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to read locale data");
 344         }
 345
 346         /* Merge with the current settings */
 347         for (p = 0; p < _VARIABLE_LC_MAX; p++)
 348                 if (!isempty(c->locale[p]) && isempty(new_locale[p])) {
 349                         new_locale[p] = strdup(c->locale[p]);
 350                         if (!new_locale[p])
 351                                 return -ENOMEM;
 352                 }
 353
 354         locale_simplify(new_locale);
 355
 356         for (p = 0; p < _VARIABLE_LC_MAX; p++)
 357                 if (!streq_ptr(c->locale[p], new_locale[p])) {
 358                         modified = true;
 359                         break;
 360                 }
 361
 362         if (!modified) {
 363                 log_debug("Locale settings were not modified.");
 364                 return sd_bus_reply_method_return(m, NULL);
 365         }
 366
 367         r = bus_verify_polkit_async(
 368                         m,
 369                         CAP_SYS_ADMIN,
 370                         "org.freedesktop.locale1.set-locale",
 371                         NULL,
 372                         interactive,
 373                         UID_INVALID,
 374                         &polkit_registry,
 375                         error);
 376         if (r < 0)
 377                 return r;
 378         if (r == 0)
 379                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 380
 381         for (p = 0; p < _VARIABLE_LC_MAX; p++)
 382                 free_and_replace(c->locale[p], new_locale[p]);
 383
 384         r = locale_write_data(c, &settings);
 385         if (r < 0) {
 386                 log_error_errno(r, "Failed to set locale: %m");
 387                 return sd_bus_error_set_errnof(error, r, "Failed to set locale: %m");
 388         }
 389
 390         (void) locale_update_system_manager(c, sd_bus_message_get_bus(m));
 391
 392         if (settings) {
 393                 _cleanup_free_ char *line;
 394
 395                 line = strv_join(settings, ", ");
 396                 log_info("Changed locale to %s.", strnull(line));
 397         } else
 398                 log_info("Changed locale to unset.");
 399
 400         (void) sd_bus_emit_properties_changed(
 401                         sd_bus_message_get_bus(m),
 402                         "/org/freedesktop/locale1",
 403                         "org.freedesktop.locale1",
 404                         "Locale", NULL);
 405
 406         return sd_bus_reply_method_return(m, NULL);
 407 }
 408
 409 static int method_set_vc_keyboard(sd_bus_message *m, void *userdata, sd_bus_error *error) {
 410         Context *c = userdata;
 411         const char *keymap, *keymap_toggle;
 412         int convert, interactive, r;
 413
 414         assert(m);
 415         assert(c);
 416
 417         r = sd_bus_message_read(m, "ssbb", &keymap, &keymap_toggle, &convert, &interactive);
 418         if (r < 0)
 419                 return r;
 420
 421         keymap = empty_to_null(keymap);
 422         keymap_toggle = empty_to_null(keymap_toggle);
 423
 424         r = vconsole_read_data(c, m);
 425         if (r < 0) {
 426                 log_error_errno(r, "Failed to read virtual console keymap data: %m");
 427                 return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to read virtual console keymap data");
 428         }
 429
 430         if (streq_ptr(keymap, c->vc_keymap) &&
 431             streq_ptr(keymap_toggle, c->vc_keymap_toggle))
 432                 return sd_bus_reply_method_return(m, NULL);
 433
 434         if ((keymap && (!filename_is_valid(keymap) || !string_is_safe(keymap))) ||
 435             (keymap_toggle && (!filename_is_valid(keymap_toggle) || !string_is_safe(keymap_toggle))))
 436                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Received invalid keymap data");
 437
 438         r = bus_verify_polkit_async(
 439                         m,
 440                         CAP_SYS_ADMIN,
 441                         "org.freedesktop.locale1.set-keyboard",
 442                         NULL,
 443                         interactive,
 444                         UID_INVALID,
 445                         &polkit_registry,
 446                         error);
 447         if (r < 0)
 448                 return r;
 449         if (r == 0)
 450                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 451
 452         if (free_and_strdup(&c->vc_keymap, keymap) < 0 ||
 453             free_and_strdup(&c->vc_keymap_toggle, keymap_toggle) < 0)
 454                 return -ENOMEM;
 455
 456         r = vconsole_write_data(c);
 457         if (r < 0) {
 458                 log_error_errno(r, "Failed to set virtual console keymap: %m");
 459                 return sd_bus_error_set_errnof(error, r, "Failed to set virtual console keymap: %m");
 460         }
 461
 462         log_info("Changed virtual console keymap to '%s' toggle '%s'",
 463                  strempty(c->vc_keymap), strempty(c->vc_keymap_toggle));
 464
 465         r = vconsole_reload(sd_bus_message_get_bus(m));
 466         if (r < 0)
 467                 log_error_errno(r, "Failed to request keymap reload: %m");
 468
 469         (void) sd_bus_emit_properties_changed(
 470                         sd_bus_message_get_bus(m),
 471                         "/org/freedesktop/locale1",
 472                         "org.freedesktop.locale1",
 473                         "VConsoleKeymap", "VConsoleKeymapToggle", NULL);
 474
 475         if (convert) {
 476                 r = vconsole_convert_to_x11_and_emit(c, m);
 477                 if (r < 0)
 478                         log_error_errno(r, "Failed to convert keymap data: %m");
 479         }
 480
 481         return sd_bus_reply_method_return(m, NULL);
 482 }
 483
 484 #if HAVE_XKBCOMMON
 485
 486 _printf_(3, 0)
 487 static void log_xkb(struct xkb_context *ctx, enum xkb_log_level lvl, const char *format, va_list args) {
 488         const char *fmt;
 489
 490         fmt = strjoina("libxkbcommon: ", format);
 491 #pragma GCC diagnostic push
 492 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
 493         log_internalv(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, fmt, args);
 494 #pragma GCC diagnostic pop
 495 }
 496
 497 #define LOAD_SYMBOL(symbol, dl, name)                                   \
 498         ({                                                              \
 499                 (symbol) = (typeof(symbol)) dlvsym((dl), (name), "V_0.5.0"); \
 500                 (symbol) ? 0 : -EOPNOTSUPP;                             \
 501         })
 502
 503 static int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {
 504
 505         /* We dlopen() the library in order to make the dependency soft. The library (and what it pulls in) is huge
 506          * after all, hence let's support XKB maps when the library is around, and refuse otherwise. The function
 507          * pointers to the shared library are below: */
 508
 509         struct xkb_context* (*symbol_xkb_context_new)(enum xkb_context_flags flags) = NULL;
 510         void (*symbol_xkb_context_unref)(struct xkb_context *context) = NULL;
 511         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;
 512         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;
 513         void (*symbol_xkb_keymap_unref)(struct xkb_keymap *keymap) = NULL;
 514
 515         const struct xkb_rule_names rmlvo = {
 516                 .model          = model,
 517                 .layout         = layout,
 518                 .variant        = variant,
 519                 .options        = options,
 520         };
 521         struct xkb_context *ctx = NULL;
 522         struct xkb_keymap *km = NULL;
 523         void *dl;
 524         int r;
 525
 526         /* Compile keymap from RMLVO information to check out its validity */
 527
 528         dl = dlopen("libxkbcommon.so.0", RTLD_LAZY);
 529         if (!dl)
 530                 return -EOPNOTSUPP;
 531
 532         r = LOAD_SYMBOL(symbol_xkb_context_new, dl, "xkb_context_new");
 533         if (r < 0)
 534                 goto finish;
 535
 536         r = LOAD_SYMBOL(symbol_xkb_context_unref, dl, "xkb_context_unref");
 537         if (r < 0)
 538                 goto finish;
 539
 540         r = LOAD_SYMBOL(symbol_xkb_context_set_log_fn, dl, "xkb_context_set_log_fn");
 541         if (r < 0)
 542                 goto finish;
 543
 544         r = LOAD_SYMBOL(symbol_xkb_keymap_new_from_names, dl, "xkb_keymap_new_from_names");
 545         if (r < 0)
 546                 goto finish;
 547
 548         r = LOAD_SYMBOL(symbol_xkb_keymap_unref, dl, "xkb_keymap_unref");
 549         if (r < 0)
 550                 goto finish;
 551
 552         ctx = symbol_xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES);
 553         if (!ctx) {
 554                 r = -ENOMEM;
 555                 goto finish;
 556         }
 557
 558         symbol_xkb_context_set_log_fn(ctx, log_xkb);
 559
 560         km = symbol_xkb_keymap_new_from_names(ctx, &rmlvo, XKB_KEYMAP_COMPILE_NO_FLAGS);
 561         if (!km) {
 562                 r = -EINVAL;
 563                 goto finish;
 564         }
 565
 566         r = 0;
 567
 568 finish:
 569         if (symbol_xkb_keymap_unref && km)
 570                 symbol_xkb_keymap_unref(km);
 571
 572         if (symbol_xkb_context_unref && ctx)
 573                 symbol_xkb_context_unref(ctx);
 574
 575         (void) dlclose(dl);
 576         return r;
 577 }
 578
 579 #else
 580
 581 static int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {
 582         return 0;
 583 }
 584
 585 #endif
 586
 587 static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_error *error) {
 588         Context *c = userdata;
 589         const char *layout, *model, *variant, *options;
 590         int convert, interactive, r;
 591
 592         assert(m);
 593         assert(c);
 594
 595         r = sd_bus_message_read(m, "ssssbb", &layout, &model, &variant, &options, &convert, &interactive);
 596         if (r < 0)
 597                 return r;
 598
 599         layout = empty_to_null(layout);
 600         model = empty_to_null(model);
 601         variant = empty_to_null(variant);
 602         options = empty_to_null(options);
 603
 604         r = x11_read_data(c, m);
 605         if (r < 0) {
 606                 log_error_errno(r, "Failed to read x11 keyboard layout data: %m");
 607                 return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to read x11 keyboard layout data");
 608         }
 609
 610         if (streq_ptr(layout, c->x11_layout) &&
 611             streq_ptr(model, c->x11_model) &&
 612             streq_ptr(variant, c->x11_variant) &&
 613             streq_ptr(options, c->x11_options))
 614                 return sd_bus_reply_method_return(m, NULL);
 615
 616         if ((layout && !string_is_safe(layout)) ||
 617             (model && !string_is_safe(model)) ||
 618             (variant && !string_is_safe(variant)) ||
 619             (options && !string_is_safe(options)))
 620                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Received invalid keyboard data");
 621
 622         r = verify_xkb_rmlvo(model, layout, variant, options);
 623         if (r < 0) {
 624                 log_error_errno(r, "Cannot compile XKB keymap for new x11 keyboard layout ('%s' / '%s' / '%s' / '%s'): %m",
 625                                 strempty(model), strempty(layout), strempty(variant), strempty(options));
 626
 627                 if (r == -EOPNOTSUPP)
 628                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Local keyboard configuration not supported on this system.");
 629
 630                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Specified keymap cannot be compiled, refusing as invalid.");
 631         }
 632
 633         r = bus_verify_polkit_async(
 634                         m,
 635                         CAP_SYS_ADMIN,
 636                         "org.freedesktop.locale1.set-keyboard",
 637                         NULL,
 638                         interactive,
 639                         UID_INVALID,
 640                         &polkit_registry,
 641                         error);
 642         if (r < 0)
 643                 return r;
 644         if (r == 0)
 645                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 646
 647         if (free_and_strdup(&c->x11_layout, layout) < 0 ||
 648             free_and_strdup(&c->x11_model, model) < 0 ||
 649             free_and_strdup(&c->x11_variant, variant) < 0 ||
 650             free_and_strdup(&c->x11_options, options) < 0)
 651                 return -ENOMEM;
 652
 653         r = x11_write_data(c);
 654         if (r < 0) {
 655                 log_error_errno(r, "Failed to set X11 keyboard layout: %m");
 656                 return sd_bus_error_set_errnof(error, r, "Failed to set X11 keyboard layout: %m");
 657         }
 658
 659         log_info("Changed X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
 660                  strempty(c->x11_layout),
 661                  strempty(c->x11_model),
 662                  strempty(c->x11_variant),
 663                  strempty(c->x11_options));
 664
 665         (void) sd_bus_emit_properties_changed(
 666                         sd_bus_message_get_bus(m),
 667                         "/org/freedesktop/locale1",
 668                         "org.freedesktop.locale1",
 669                         "X11Layout", "X11Model", "X11Variant", "X11Options", NULL);
 670
 671         if (convert) {
 672                 r = x11_convert_to_vconsole_and_emit(c, m);
 673                 if (r < 0)
 674                         log_error_errno(r, "Failed to convert keymap data: %m");
 675         }
 676
 677         return sd_bus_reply_method_return(m, NULL);
 678 }
 679
 680 static const sd_bus_vtable locale_vtable[] = {
 681         SD_BUS_VTABLE_START(0),
 682         SD_BUS_PROPERTY("Locale", "as", property_get_locale, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 683         SD_BUS_PROPERTY("X11Layout", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 684         SD_BUS_PROPERTY("X11Model", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 685         SD_BUS_PROPERTY("X11Variant", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 686         SD_BUS_PROPERTY("X11Options", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 687         SD_BUS_PROPERTY("VConsoleKeymap", "s", property_get_vconsole, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 688         SD_BUS_PROPERTY("VConsoleKeymapToggle", "s", property_get_vconsole, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 689         SD_BUS_METHOD("SetLocale", "asb", NULL, method_set_locale, SD_BUS_VTABLE_UNPRIVILEGED),
 690         SD_BUS_METHOD("SetVConsoleKeyboard", "ssbb", NULL, method_set_vc_keyboard, SD_BUS_VTABLE_UNPRIVILEGED),
 691         SD_BUS_METHOD("SetX11Keyboard", "ssssbb", NULL, method_set_x11_keyboard, SD_BUS_VTABLE_UNPRIVILEGED),
 692         SD_BUS_VTABLE_END
 693 };
 694
 695 static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) {
 696         _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
 697         int r;
 698
 699         assert(c);
 700         assert(event);
 701         assert(_bus);
 702
 703         r = sd_bus_default_system(&bus);
 704         if (r < 0)
 705                 return log_error_errno(r, "Failed to get system bus connection: %m");
 706
 707         r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/locale1", "org.freedesktop.locale1", locale_vtable, c);
 708         if (r < 0)
 709                 return log_error_errno(r, "Failed to register object: %m");
 710
 711         r = sd_bus_request_name_async(bus, NULL, "org.freedesktop.locale1", 0, NULL, NULL);
 712         if (r < 0)
 713                 return log_error_errno(r, "Failed to request name: %m");
 714
 715         r = sd_bus_attach_event(bus, event, 0);
 716         if (r < 0)
 717                 return log_error_errno(r, "Failed to attach bus to event loop: %m");
 718
 719         *_bus = TAKE_PTR(bus);
 720
 721         return 0;
 722 }
 723
 724 int main(int argc, char *argv[]) {
 725         _cleanup_(context_free) Context context = {
 726                 .locale_mtime = USEC_INFINITY,
 727                 .vc_mtime = USEC_INFINITY,
 728                 .x11_mtime = USEC_INFINITY,
 729         };
 730         _cleanup_(sd_event_unrefp) sd_event *event = NULL;
 731         _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
 732         int r;
 733
 734         log_set_target(LOG_TARGET_AUTO);
 735         log_parse_environment();
 736         log_open();
 737
 738         umask(0022);
 739         mac_selinux_init();
 740
 741         if (argc != 1) {
 742                 log_error("This program takes no arguments.");
 743                 r = -EINVAL;
 744                 goto finish;
 745         }
 746
 747         r = sd_event_default(&event);
 748         if (r < 0) {
 749                 log_error_errno(r, "Failed to allocate event loop: %m");
 750                 goto finish;
 751         }
 752
 753         sd_event_set_watchdog(event, true);
 754
 755         r = connect_bus(&context, event, &bus);
 756         if (r < 0)
 757                 goto finish;
 758
 759         r = bus_event_loop_with_idle(event, bus, "org.freedesktop.locale1", DEFAULT_EXIT_USEC, NULL, NULL);
 760         if (r < 0)
 761                 log_error_errno(r, "Failed to run event loop: %m");
 762
 763 finish:
 764         bus_verify_polkit_async_registry_free(polkit_registry);
 765
 766         return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
 767 }