src/locale/localed.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <errno.h>
   4 #include <string.h>
   5 #include <unistd.h>
   6
   7 #if HAVE_XKBCOMMON
   8 #include <xkbcommon/xkbcommon.h>
   9 #include <dlfcn.h>
  10 #endif
  11
  12 #include "sd-bus.h"
  13
  14 #include "alloc-util.h"
  15 #include "bus-error.h"
  16 #include "bus-message.h"
  17 #include "bus-util.h"
  18 #include "def.h"
  19 #include "keymap-util.h"
  20 #include "locale-util.h"
  21 #include "macro.h"
  22 #include "path-util.h"
  23 #include "selinux-util.h"
  24 #include "signal-util.h"
  25 #include "string-util.h"
  26 #include "strv.h"
  27 #include "user-util.h"
  28
  29 static Hashmap *polkit_registry = NULL;
  30
  31 static int locale_update_system_manager(Context *c, sd_bus *bus) {
  32         _cleanup_free_ char **l_unset = NULL;
  33         _cleanup_strv_free_ char **l_set = NULL;
  34         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
  35         sd_bus_error error = SD_BUS_ERROR_NULL;
  36         unsigned c_set, c_unset, p;
  37         int r;
  38
  39         assert(bus);
  40
  41         l_unset = new0(char*, _VARIABLE_LC_MAX);
  42         if (!l_unset)
  43                 return -ENOMEM;
  44
  45         l_set = new0(char*, _VARIABLE_LC_MAX);
  46         if (!l_set)
  47                 return -ENOMEM;
  48
  49         for (p = 0, c_set = 0, c_unset = 0; p < _VARIABLE_LC_MAX; p++) {
  50                 const char *name;
  51
  52                 name = locale_variable_to_string(p);
  53                 assert(name);
  54
  55                 if (isempty(c->locale[p]))
  56                         l_unset[c_set++] = (char*) name;
  57                 else {
  58                         char *s;
  59
  60                         if (asprintf(&s, "%s=%s", name, c->locale[p]) < 0)
  61                                 return -ENOMEM;
  62
  63                         l_set[c_unset++] = s;
  64                 }
  65         }
  66
  67         assert(c_set + c_unset == _VARIABLE_LC_MAX);
  68         r = sd_bus_message_new_method_call(bus, &m,
  69                         "org.freedesktop.systemd1",
  70                         "/org/freedesktop/systemd1",
  71                         "org.freedesktop.systemd1.Manager",
  72                         "UnsetAndSetEnvironment");
  73         if (r < 0)
  74                 return r;
  75
  76         r = sd_bus_message_append_strv(m, l_unset);
  77         if (r < 0)
  78                 return r;
  79
  80         r = sd_bus_message_append_strv(m, l_set);
  81         if (r < 0)
  82                 return r;
  83
  84         r = sd_bus_call(bus, m, 0, &error, NULL);
  85         if (r < 0)
  86                 log_error_errno(r, "Failed to update the manager environment, ignoring: %m");
  87
  88         return 0;
  89 }
  90
  91 static int vconsole_reload(sd_bus *bus) {
  92         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
  93         int r;
  94
  95         assert(bus);
  96
  97         r = sd_bus_call_method(bus,
  98                         "org.freedesktop.systemd1",
  99                         "/org/freedesktop/systemd1",
 100                         "org.freedesktop.systemd1.Manager",
 101                         "RestartUnit",
 102                         &error,
 103                         NULL,
 104                         "ss", "systemd-vconsole-setup.service", "replace");
 105
 106         if (r < 0)
 107                 log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
 108         return r;
 109 }
 110
 111 static int vconsole_convert_to_x11_and_emit(Context *c, sd_bus_message *m) {
 112         int r;
 113
 114         assert(m);
 115
 116         r = x11_read_data(c, m);
 117         if (r < 0)
 118                 return r;
 119
 120         r = vconsole_convert_to_x11(c);
 121         if (r <= 0)
 122                 return r;
 123
 124         /* modified */
 125         r = x11_write_data(c);
 126         if (r < 0)
 127                 return log_error_errno(r, "Failed to write X11 keyboard layout: %m");
 128
 129         sd_bus_emit_properties_changed(sd_bus_message_get_bus(m),
 130                                        "/org/freedesktop/locale1",
 131                                        "org.freedesktop.locale1",
 132                                        "X11Layout", "X11Model", "X11Variant", "X11Options", NULL);
 133
 134         return 1;
 135 }
 136
 137 static int x11_convert_to_vconsole_and_emit(Context *c, sd_bus_message *m) {
 138         int r;
 139
 140         assert(m);
 141
 142         r = vconsole_read_data(c, m);
 143         if (r < 0)
 144                 return r;
 145
 146         r = x11_convert_to_vconsole(c);
 147         if (r <= 0)
 148                 return r;
 149
 150         /* modified */
 151         r = vconsole_write_data(c);
 152         if (r < 0)
 153                 log_error_errno(r, "Failed to save virtual console keymap: %m");
 154
 155         sd_bus_emit_properties_changed(sd_bus_message_get_bus(m),
 156                                        "/org/freedesktop/locale1",
 157                                        "org.freedesktop.locale1",
 158                                        "VConsoleKeymap", "VConsoleKeymapToggle", NULL);
 159
 160         return vconsole_reload(sd_bus_message_get_bus(m));
 161 }
 162
 163 static int property_get_locale(
 164                 sd_bus *bus,
 165                 const char *path,
 166                 const char *interface,
 167                 const char *property,
 168                 sd_bus_message *reply,
 169                 void *userdata,
 170                 sd_bus_error *error) {
 171
 172         Context *c = userdata;
 173         _cleanup_strv_free_ char **l = NULL;
 174         int p, q, r;
 175
 176         r = locale_read_data(c, reply);
 177         if (r < 0)
 178                 return r;
 179
 180         l = new0(char*, _VARIABLE_LC_MAX+1);
 181         if (!l)
 182                 return -ENOMEM;
 183
 184         for (p = 0, q = 0; p < _VARIABLE_LC_MAX; p++) {
 185                 char *t;
 186                 const char *name;
 187
 188                 name = locale_variable_to_string(p);
 189                 assert(name);
 190
 191                 if (isempty(c->locale[p]))
 192                         continue;
 193
 194                 if (asprintf(&t, "%s=%s", name, c->locale[p]) < 0)
 195                         return -ENOMEM;
 196
 197                 l[q++] = t;
 198         }
 199
 200         return sd_bus_message_append_strv(reply, l);
 201 }
 202
 203 static int property_get_vconsole(
 204                 sd_bus *bus,
 205                 const char *path,
 206                 const char *interface,
 207                 const char *property,
 208                 sd_bus_message *reply,
 209                 void *userdata,
 210                 sd_bus_error *error) {
 211
 212         Context *c = userdata;
 213         int r;
 214
 215         r = vconsole_read_data(c, reply);
 216         if (r < 0)
 217                 return r;
 218
 219         if (streq(property, "VConsoleKeymap"))
 220                 return sd_bus_message_append_basic(reply, 's', c->vc_keymap);
 221         else if (streq(property, "VConsoleKeymapToggle"))
 222                 return sd_bus_message_append_basic(reply, 's', c->vc_keymap_toggle);
 223
 224         return -EINVAL;
 225 }
 226
 227 static int property_get_xkb(
 228                 sd_bus *bus,
 229                 const char *path,
 230                 const char *interface,
 231                 const char *property,
 232                 sd_bus_message *reply,
 233                 void *userdata,
 234                 sd_bus_error *error) {
 235
 236         Context *c = userdata;
 237         int r;
 238
 239         r = x11_read_data(c, reply);
 240         if (r < 0)
 241                 return r;
 242
 243         if (streq(property, "X11Layout"))
 244                 return sd_bus_message_append_basic(reply, 's', c->x11_layout);
 245         else if (streq(property, "X11Model"))
 246                 return sd_bus_message_append_basic(reply, 's', c->x11_model);
 247         else if (streq(property, "X11Variant"))
 248                 return sd_bus_message_append_basic(reply, 's', c->x11_variant);
 249         else if (streq(property, "X11Options"))
 250                 return sd_bus_message_append_basic(reply, 's', c->x11_options);
 251
 252         return -EINVAL;
 253 }
 254
 255 static void locale_free(char ***l) {
 256         int p;
 257
 258         for (p = 0; p < _VARIABLE_LC_MAX; p++)
 259                 (*l)[p] = mfree((*l)[p]);
 260 }
 261
 262 static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *error) {
 263         Context *c = userdata;
 264         _cleanup_strv_free_ char **settings = NULL, **l = NULL;
 265         char *new_locale[_VARIABLE_LC_MAX] = {}, **i;
 266         _cleanup_(locale_free) _unused_ char **dummy = new_locale;
 267         bool modified = false;
 268         int interactive, p, r;
 269
 270         assert(m);
 271         assert(c);
 272
 273         r = bus_message_read_strv_extend(m, &l);
 274         if (r < 0)
 275                 return r;
 276
 277         r = sd_bus_message_read_basic(m, 'b', &interactive);
 278         if (r < 0)
 279                 return r;
 280
 281         /* If single locale without variable name is provided, then we assume it is LANG=. */
 282         if (strv_length(l) == 1 && !strchr(*l, '=')) {
 283                 if (!locale_is_valid(*l))
 284                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid Locale data.");
 285
 286                 new_locale[VARIABLE_LANG] = strdup(*l);
 287                 if (!new_locale[VARIABLE_LANG])
 288                         return -ENOMEM;
 289
 290                 l = strv_free(l);
 291         }
 292
 293         /* Check whether a variable is valid */
 294         STRV_FOREACH(i, l) {
 295                 bool valid = false;
 296
 297                 for (p = 0; p < _VARIABLE_LC_MAX; p++) {
 298                         size_t k;
 299                         const char *name;
 300
 301                         name = locale_variable_to_string(p);
 302                         assert(name);
 303
 304                         k = strlen(name);
 305                         if (startswith(*i, name) &&
 306                             (*i)[k] == '=' &&
 307                             locale_is_valid((*i) + k + 1)) {
 308                                 valid = true;
 309
 310                                 new_locale[p] = strdup((*i) + k + 1);
 311                                 if (!new_locale[p])
 312                                         return -ENOMEM;
 313
 314                                 break;
 315                         }
 316                 }
 317
 318                 if (!valid)
 319                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid Locale data.");
 320         }
 321
 322         /* If LANG was specified, but not LANGUAGE, check if we should
 323          * set it based on the language fallback table. */
 324         if (!isempty(new_locale[VARIABLE_LANG]) &&
 325             isempty(new_locale[VARIABLE_LANGUAGE])) {
 326                 _cleanup_free_ char *language = NULL;
 327
 328                 (void) find_language_fallback(new_locale[VARIABLE_LANG], &language);
 329                 if (language) {
 330                         log_debug("Converted LANG=%s to LANGUAGE=%s", new_locale[VARIABLE_LANG], language);
 331                         free_and_replace(new_locale[VARIABLE_LANGUAGE], language);
 332                 }
 333         }
 334
 335         r = locale_read_data(c, m);
 336         if (r < 0) {
 337                 log_error_errno(r, "Failed to read locale data: %m");
 338                 return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to read locale data");
 339         }
 340
 341         /* Merge with the current settings */
 342         for (p = 0; p < _VARIABLE_LC_MAX; p++)
 343                 if (!isempty(c->locale[p]) && isempty(new_locale[p])) {
 344                         new_locale[p] = strdup(c->locale[p]);
 345                         if (!new_locale[p])
 346                                 return -ENOMEM;
 347                 }
 348
 349         locale_simplify(new_locale);
 350
 351         for (p = 0; p < _VARIABLE_LC_MAX; p++)
 352                 if (!streq_ptr(c->locale[p], new_locale[p])) {
 353                         modified = true;
 354                         break;
 355                 }
 356
 357         if (!modified) {
 358                 log_debug("Locale settings were not modified.");
 359                 return sd_bus_reply_method_return(m, NULL);
 360         }
 361
 362         r = bus_verify_polkit_async(
 363                         m,
 364                         CAP_SYS_ADMIN,
 365                         "org.freedesktop.locale1.set-locale",
 366                         NULL,
 367                         interactive,
 368                         UID_INVALID,
 369                         &polkit_registry,
 370                         error);
 371         if (r < 0)
 372                 return r;
 373         if (r == 0)
 374                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 375
 376         for (p = 0; p < _VARIABLE_LC_MAX; p++)
 377                 free_and_replace(c->locale[p], new_locale[p]);
 378
 379         r = locale_write_data(c, &settings);
 380         if (r < 0) {
 381                 log_error_errno(r, "Failed to set locale: %m");
 382                 return sd_bus_error_set_errnof(error, r, "Failed to set locale: %m");
 383         }
 384
 385         (void) locale_update_system_manager(c, sd_bus_message_get_bus(m));
 386
 387         if (settings) {
 388                 _cleanup_free_ char *line;
 389
 390                 line = strv_join(settings, ", ");
 391                 log_info("Changed locale to %s.", strnull(line));
 392         } else
 393                 log_info("Changed locale to unset.");
 394
 395         (void) sd_bus_emit_properties_changed(
 396                         sd_bus_message_get_bus(m),
 397                         "/org/freedesktop/locale1",
 398                         "org.freedesktop.locale1",
 399                         "Locale", NULL);
 400
 401         return sd_bus_reply_method_return(m, NULL);
 402 }
 403
 404 static int method_set_vc_keyboard(sd_bus_message *m, void *userdata, sd_bus_error *error) {
 405         Context *c = userdata;
 406         const char *keymap, *keymap_toggle;
 407         int convert, interactive, r;
 408
 409         assert(m);
 410         assert(c);
 411
 412         r = sd_bus_message_read(m, "ssbb", &keymap, &keymap_toggle, &convert, &interactive);
 413         if (r < 0)
 414                 return r;
 415
 416         keymap = empty_to_null(keymap);
 417         keymap_toggle = empty_to_null(keymap_toggle);
 418
 419         r = vconsole_read_data(c, m);
 420         if (r < 0) {
 421                 log_error_errno(r, "Failed to read virtual console keymap data: %m");
 422                 return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to read virtual console keymap data");
 423         }
 424
 425         if (streq_ptr(keymap, c->vc_keymap) &&
 426             streq_ptr(keymap_toggle, c->vc_keymap_toggle))
 427                 return sd_bus_reply_method_return(m, NULL);
 428
 429         if ((keymap && (!filename_is_valid(keymap) || !string_is_safe(keymap))) ||
 430             (keymap_toggle && (!filename_is_valid(keymap_toggle) || !string_is_safe(keymap_toggle))))
 431                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Received invalid keymap data");
 432
 433         r = bus_verify_polkit_async(
 434                         m,
 435                         CAP_SYS_ADMIN,
 436                         "org.freedesktop.locale1.set-keyboard",
 437                         NULL,
 438                         interactive,
 439                         UID_INVALID,
 440                         &polkit_registry,
 441                         error);
 442         if (r < 0)
 443                 return r;
 444         if (r == 0)
 445                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 446
 447         if (free_and_strdup(&c->vc_keymap, keymap) < 0 ||
 448             free_and_strdup(&c->vc_keymap_toggle, keymap_toggle) < 0)
 449                 return -ENOMEM;
 450
 451         r = vconsole_write_data(c);
 452         if (r < 0) {
 453                 log_error_errno(r, "Failed to set virtual console keymap: %m");
 454                 return sd_bus_error_set_errnof(error, r, "Failed to set virtual console keymap: %m");
 455         }
 456
 457         log_info("Changed virtual console keymap to '%s' toggle '%s'",
 458                  strempty(c->vc_keymap), strempty(c->vc_keymap_toggle));
 459
 460         r = vconsole_reload(sd_bus_message_get_bus(m));
 461         if (r < 0)
 462                 log_error_errno(r, "Failed to request keymap reload: %m");
 463
 464         (void) sd_bus_emit_properties_changed(
 465                         sd_bus_message_get_bus(m),
 466                         "/org/freedesktop/locale1",
 467                         "org.freedesktop.locale1",
 468                         "VConsoleKeymap", "VConsoleKeymapToggle", NULL);
 469
 470         if (convert) {
 471                 r = vconsole_convert_to_x11_and_emit(c, m);
 472                 if (r < 0)
 473                         log_error_errno(r, "Failed to convert keymap data: %m");
 474         }
 475
 476         return sd_bus_reply_method_return(m, NULL);
 477 }
 478
 479 #if HAVE_XKBCOMMON
 480
 481 _printf_(3, 0)
 482 static void log_xkb(struct xkb_context *ctx, enum xkb_log_level lvl, const char *format, va_list args) {
 483         const char *fmt;
 484
 485         fmt = strjoina("libxkbcommon: ", format);
 486 #pragma GCC diagnostic push
 487 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
 488         log_internalv(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, fmt, args);
 489 #pragma GCC diagnostic pop
 490 }
 491
 492 #define LOAD_SYMBOL(symbol, dl, name)                                   \
 493         ({                                                              \
 494                 (symbol) = (typeof(symbol)) dlvsym((dl), (name), "V_0.5.0"); \
 495                 (symbol) ? 0 : -EOPNOTSUPP;                             \
 496         })
 497
 498 static int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {
 499
 500         /* We dlopen() the library in order to make the dependency soft. The library (and what it pulls in) is huge
 501          * after all, hence let's support XKB maps when the library is around, and refuse otherwise. The function
 502          * pointers to the shared library are below: */
 503
 504         struct xkb_context* (*symbol_xkb_context_new)(enum xkb_context_flags flags) = NULL;
 505         void (*symbol_xkb_context_unref)(struct xkb_context *context) = NULL;
 506         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;
 507         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;
 508         void (*symbol_xkb_keymap_unref)(struct xkb_keymap *keymap) = NULL;
 509
 510         const struct xkb_rule_names rmlvo = {
 511                 .model          = model,
 512                 .layout         = layout,
 513                 .variant        = variant,
 514                 .options        = options,
 515         };
 516         struct xkb_context *ctx = NULL;
 517         struct xkb_keymap *km = NULL;
 518         void *dl;
 519         int r;
 520
 521         /* Compile keymap from RMLVO information to check out its validity */
 522
 523         dl = dlopen("libxkbcommon.so.0", RTLD_LAZY);
 524         if (!dl)
 525                 return -EOPNOTSUPP;
 526
 527         r = LOAD_SYMBOL(symbol_xkb_context_new, dl, "xkb_context_new");
 528         if (r < 0)
 529                 goto finish;
 530
 531         r = LOAD_SYMBOL(symbol_xkb_context_unref, dl, "xkb_context_unref");
 532         if (r < 0)
 533                 goto finish;
 534
 535         r = LOAD_SYMBOL(symbol_xkb_context_set_log_fn, dl, "xkb_context_set_log_fn");
 536         if (r < 0)
 537                 goto finish;
 538
 539         r = LOAD_SYMBOL(symbol_xkb_keymap_new_from_names, dl, "xkb_keymap_new_from_names");
 540         if (r < 0)
 541                 goto finish;
 542
 543         r = LOAD_SYMBOL(symbol_xkb_keymap_unref, dl, "xkb_keymap_unref");
 544         if (r < 0)
 545                 goto finish;
 546
 547         ctx = symbol_xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES);
 548         if (!ctx) {
 549                 r = -ENOMEM;
 550                 goto finish;
 551         }
 552
 553         symbol_xkb_context_set_log_fn(ctx, log_xkb);
 554
 555         km = symbol_xkb_keymap_new_from_names(ctx, &rmlvo, XKB_KEYMAP_COMPILE_NO_FLAGS);
 556         if (!km) {
 557                 r = -EINVAL;
 558                 goto finish;
 559         }
 560
 561         r = 0;
 562
 563 finish:
 564         if (symbol_xkb_keymap_unref && km)
 565                 symbol_xkb_keymap_unref(km);
 566
 567         if (symbol_xkb_context_unref && ctx)
 568                 symbol_xkb_context_unref(ctx);
 569
 570         (void) dlclose(dl);
 571         return r;
 572 }
 573
 574 #else
 575
 576 static int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {
 577         return 0;
 578 }
 579
 580 #endif
 581
 582 static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_error *error) {
 583         Context *c = userdata;
 584         const char *layout, *model, *variant, *options;
 585         int convert, interactive, r;
 586
 587         assert(m);
 588         assert(c);
 589
 590         r = sd_bus_message_read(m, "ssssbb", &layout, &model, &variant, &options, &convert, &interactive);
 591         if (r < 0)
 592                 return r;
 593
 594         layout = empty_to_null(layout);
 595         model = empty_to_null(model);
 596         variant = empty_to_null(variant);
 597         options = empty_to_null(options);
 598
 599         r = x11_read_data(c, m);
 600         if (r < 0) {
 601                 log_error_errno(r, "Failed to read x11 keyboard layout data: %m");
 602                 return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to read x11 keyboard layout data");
 603         }
 604
 605         if (streq_ptr(layout, c->x11_layout) &&
 606             streq_ptr(model, c->x11_model) &&
 607             streq_ptr(variant, c->x11_variant) &&
 608             streq_ptr(options, c->x11_options))
 609                 return sd_bus_reply_method_return(m, NULL);
 610
 611         if ((layout && !string_is_safe(layout)) ||
 612             (model && !string_is_safe(model)) ||
 613             (variant && !string_is_safe(variant)) ||
 614             (options && !string_is_safe(options)))
 615                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Received invalid keyboard data");
 616
 617         r = verify_xkb_rmlvo(model, layout, variant, options);
 618         if (r < 0) {
 619                 log_error_errno(r, "Cannot compile XKB keymap for new x11 keyboard layout ('%s' / '%s' / '%s' / '%s'): %m",
 620                                 strempty(model), strempty(layout), strempty(variant), strempty(options));
 621
 622                 if (r == -EOPNOTSUPP)
 623                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Local keyboard configuration not supported on this system.");
 624
 625                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Specified keymap cannot be compiled, refusing as invalid.");
 626         }
 627
 628         r = bus_verify_polkit_async(
 629                         m,
 630                         CAP_SYS_ADMIN,
 631                         "org.freedesktop.locale1.set-keyboard",
 632                         NULL,
 633                         interactive,
 634                         UID_INVALID,
 635                         &polkit_registry,
 636                         error);
 637         if (r < 0)
 638                 return r;
 639         if (r == 0)
 640                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 641
 642         if (free_and_strdup(&c->x11_layout, layout) < 0 ||
 643             free_and_strdup(&c->x11_model, model) < 0 ||
 644             free_and_strdup(&c->x11_variant, variant) < 0 ||
 645             free_and_strdup(&c->x11_options, options) < 0)
 646                 return -ENOMEM;
 647
 648         r = x11_write_data(c);
 649         if (r < 0) {
 650                 log_error_errno(r, "Failed to set X11 keyboard layout: %m");
 651                 return sd_bus_error_set_errnof(error, r, "Failed to set X11 keyboard layout: %m");
 652         }
 653
 654         log_info("Changed X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
 655                  strempty(c->x11_layout),
 656                  strempty(c->x11_model),
 657                  strempty(c->x11_variant),
 658                  strempty(c->x11_options));
 659
 660         (void) sd_bus_emit_properties_changed(
 661                         sd_bus_message_get_bus(m),
 662                         "/org/freedesktop/locale1",
 663                         "org.freedesktop.locale1",
 664                         "X11Layout", "X11Model", "X11Variant", "X11Options", NULL);
 665
 666         if (convert) {
 667                 r = x11_convert_to_vconsole_and_emit(c, m);
 668                 if (r < 0)
 669                         log_error_errno(r, "Failed to convert keymap data: %m");
 670         }
 671
 672         return sd_bus_reply_method_return(m, NULL);
 673 }
 674
 675 static const sd_bus_vtable locale_vtable[] = {
 676         SD_BUS_VTABLE_START(0),
 677         SD_BUS_PROPERTY("Locale", "as", property_get_locale, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 678         SD_BUS_PROPERTY("X11Layout", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 679         SD_BUS_PROPERTY("X11Model", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 680         SD_BUS_PROPERTY("X11Variant", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 681         SD_BUS_PROPERTY("X11Options", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 682         SD_BUS_PROPERTY("VConsoleKeymap", "s", property_get_vconsole, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 683         SD_BUS_PROPERTY("VConsoleKeymapToggle", "s", property_get_vconsole, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
 684         SD_BUS_METHOD("SetLocale", "asb", NULL, method_set_locale, SD_BUS_VTABLE_UNPRIVILEGED),
 685         SD_BUS_METHOD("SetVConsoleKeyboard", "ssbb", NULL, method_set_vc_keyboard, SD_BUS_VTABLE_UNPRIVILEGED),
 686         SD_BUS_METHOD("SetX11Keyboard", "ssssbb", NULL, method_set_x11_keyboard, SD_BUS_VTABLE_UNPRIVILEGED),
 687         SD_BUS_VTABLE_END
 688 };
 689
 690 static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) {
 691         _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
 692         int r;
 693
 694         assert(c);
 695         assert(event);
 696         assert(_bus);
 697
 698         r = sd_bus_default_system(&bus);
 699         if (r < 0)
 700                 return log_error_errno(r, "Failed to get system bus connection: %m");
 701
 702         r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/locale1", "org.freedesktop.locale1", locale_vtable, c);
 703         if (r < 0)
 704                 return log_error_errno(r, "Failed to register object: %m");
 705
 706         r = sd_bus_request_name_async(bus, NULL, "org.freedesktop.locale1", 0, NULL, NULL);
 707         if (r < 0)
 708                 return log_error_errno(r, "Failed to request name: %m");
 709
 710         r = sd_bus_attach_event(bus, event, 0);
 711         if (r < 0)
 712                 return log_error_errno(r, "Failed to attach bus to event loop: %m");
 713
 714         *_bus = TAKE_PTR(bus);
 715
 716         return 0;
 717 }
 718
 719 int main(int argc, char *argv[]) {
 720         _cleanup_(context_free) Context context = {
 721                 .locale_mtime = USEC_INFINITY,
 722                 .vc_mtime = USEC_INFINITY,
 723                 .x11_mtime = USEC_INFINITY,
 724         };
 725         _cleanup_(sd_event_unrefp) sd_event *event = NULL;
 726         _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
 727         int r;
 728
 729         log_set_target(LOG_TARGET_AUTO);
 730         log_parse_environment();
 731         log_open();
 732
 733         umask(0022);
 734         mac_selinux_init();
 735
 736         if (argc != 1) {
 737                 log_error("This program takes no arguments.");
 738                 r = -EINVAL;
 739                 goto finish;
 740         }
 741
 742         assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
 743
 744         r = sd_event_default(&event);
 745         if (r < 0) {
 746                 log_error_errno(r, "Failed to allocate event loop: %m");
 747                 goto finish;
 748         }
 749
 750         (void) sd_event_set_watchdog(event, true);
 751
 752         r = sd_event_add_signal(event, NULL, SIGINT, NULL, NULL);
 753         if (r < 0)
 754                 return r;
 755
 756         r = sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL);
 757         if (r < 0)
 758                 return r;
 759
 760         r = connect_bus(&context, event, &bus);
 761         if (r < 0)
 762                 goto finish;
 763
 764         r = bus_event_loop_with_idle(event, bus, "org.freedesktop.locale1", DEFAULT_EXIT_USEC, NULL, NULL);
 765         if (r < 0)
 766                 log_error_errno(r, "Failed to run event loop: %m");
 767
 768 finish:
 769         bus_verify_polkit_async_registry_free(polkit_registry);
 770
 771         return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
 772 }