src/locale/keymap-util.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <errno.h>
   4 #include <sys/stat.h>
   5 #include <sys/types.h>
   6 #include <unistd.h>
   7
   8 #include "bus-polkit.h"
   9 #include "env-file-label.h"
  10 #include "env-file.h"
  11 #include "env-util.h"
  12 #include "fd-util.h"
  13 #include "fileio-label.h"
  14 #include "fileio.h"
  15 #include "kbd-util.h"
  16 #include "keymap-util.h"
  17 #include "locale-util.h"
  18 #include "macro.h"
  19 #include "mkdir.h"
  20 #include "nulstr-util.h"
  21 #include "string-util.h"
  22 #include "strv.h"
  23 #include "tmpfile-util.h"
  24
  25 static bool startswith_comma(const char *s, const char *prefix) {
  26         s = startswith(s, prefix);
  27         if (!s)
  28                 return false;
  29
  30         return IN_SET(*s, ',', '\0');
  31 }
  32
  33 static const char* systemd_kbd_model_map(void) {
  34         const char* s;
  35
  36         s = getenv("SYSTEMD_KBD_MODEL_MAP");
  37         if (s)
  38                 return s;
  39
  40         return SYSTEMD_KBD_MODEL_MAP;
  41 }
  42
  43 static const char* systemd_language_fallback_map(void) {
  44         const char* s;
  45
  46         s = getenv("SYSTEMD_LANGUAGE_FALLBACK_MAP");
  47         if (s)
  48                 return s;
  49
  50         return SYSTEMD_LANGUAGE_FALLBACK_MAP;
  51 }
  52
  53 static void context_free_x11(Context *c) {
  54         c->x11_layout = mfree(c->x11_layout);
  55         c->x11_options = mfree(c->x11_options);
  56         c->x11_model = mfree(c->x11_model);
  57         c->x11_variant = mfree(c->x11_variant);
  58 }
  59
  60 static void context_free_vconsole(Context *c) {
  61         c->vc_keymap = mfree(c->vc_keymap);
  62         c->vc_keymap_toggle = mfree(c->vc_keymap_toggle);
  63 }
  64
  65 static void context_free_locale(Context *c) {
  66         int p;
  67
  68         for (p = 0; p < _VARIABLE_LC_MAX; p++)
  69                 c->locale[p] = mfree(c->locale[p]);
  70 }
  71
  72 void context_clear(Context *c) {
  73         context_free_locale(c);
  74         context_free_x11(c);
  75         context_free_vconsole(c);
  76
  77         sd_bus_message_unref(c->locale_cache);
  78         sd_bus_message_unref(c->x11_cache);
  79         sd_bus_message_unref(c->vc_cache);
  80
  81         bus_verify_polkit_async_registry_free(c->polkit_registry);
  82 };
  83
  84 void locale_simplify(char *locale[_VARIABLE_LC_MAX]) {
  85         int p;
  86
  87         for (p = VARIABLE_LANG+1; p < _VARIABLE_LC_MAX; p++)
  88                 if (isempty(locale[p]) || streq_ptr(locale[VARIABLE_LANG], locale[p]))
  89                         locale[p] = mfree(locale[p]);
  90 }
  91
  92 int locale_read_data(Context *c, sd_bus_message *m) {
  93         struct stat st;
  94         int r;
  95
  96         /* Do not try to re-read the file within single bus operation. */
  97         if (m) {
  98                 if (m == c->locale_cache)
  99                         return 0;
 100
 101                 sd_bus_message_unref(c->locale_cache);
 102                 c->locale_cache = sd_bus_message_ref(m);
 103         }
 104
 105         r = stat("/etc/locale.conf", &st);
 106         if (r < 0 && errno != ENOENT)
 107                 return -errno;
 108
 109         if (r >= 0) {
 110                 usec_t t;
 111
 112                 /* If mtime is not changed, then we do not need to re-read the file. */
 113                 t = timespec_load(&st.st_mtim);
 114                 if (c->locale_mtime != USEC_INFINITY && t == c->locale_mtime)
 115                         return 0;
 116
 117                 c->locale_mtime = t;
 118                 context_free_locale(c);
 119
 120                 r = parse_env_file(NULL, "/etc/locale.conf",
 121                                    "LANG",              &c->locale[VARIABLE_LANG],
 122                                    "LANGUAGE",          &c->locale[VARIABLE_LANGUAGE],
 123                                    "LC_CTYPE",          &c->locale[VARIABLE_LC_CTYPE],
 124                                    "LC_NUMERIC",        &c->locale[VARIABLE_LC_NUMERIC],
 125                                    "LC_TIME",           &c->locale[VARIABLE_LC_TIME],
 126                                    "LC_COLLATE",        &c->locale[VARIABLE_LC_COLLATE],
 127                                    "LC_MONETARY",       &c->locale[VARIABLE_LC_MONETARY],
 128                                    "LC_MESSAGES",       &c->locale[VARIABLE_LC_MESSAGES],
 129                                    "LC_PAPER",          &c->locale[VARIABLE_LC_PAPER],
 130                                    "LC_NAME",           &c->locale[VARIABLE_LC_NAME],
 131                                    "LC_ADDRESS",        &c->locale[VARIABLE_LC_ADDRESS],
 132                                    "LC_TELEPHONE",      &c->locale[VARIABLE_LC_TELEPHONE],
 133                                    "LC_MEASUREMENT",    &c->locale[VARIABLE_LC_MEASUREMENT],
 134                                    "LC_IDENTIFICATION", &c->locale[VARIABLE_LC_IDENTIFICATION]);
 135                 if (r < 0)
 136                         return r;
 137         } else {
 138                 int p;
 139
 140                 c->locale_mtime = USEC_INFINITY;
 141                 context_free_locale(c);
 142
 143                 /* Fill in what we got passed from systemd. */
 144                 for (p = 0; p < _VARIABLE_LC_MAX; p++) {
 145                         const char *name;
 146
 147                         name = locale_variable_to_string(p);
 148                         assert(name);
 149
 150                         r = free_and_strdup(&c->locale[p], empty_to_null(getenv(name)));
 151                         if (r < 0)
 152                                 return r;
 153                 }
 154         }
 155
 156         locale_simplify(c->locale);
 157         return 0;
 158 }
 159
 160 int vconsole_read_data(Context *c, sd_bus_message *m) {
 161         struct stat st;
 162         usec_t t;
 163         int r;
 164
 165         /* Do not try to re-read the file within single bus operation. */
 166         if (m) {
 167                 if (m == c->vc_cache)
 168                         return 0;
 169
 170                 sd_bus_message_unref(c->vc_cache);
 171                 c->vc_cache = sd_bus_message_ref(m);
 172         }
 173
 174         if (stat("/etc/vconsole.conf", &st) < 0) {
 175                 if (errno != ENOENT)
 176                         return -errno;
 177
 178                 c->vc_mtime = USEC_INFINITY;
 179                 context_free_vconsole(c);
 180                 return 0;
 181         }
 182
 183         /* If mtime is not changed, then we do not need to re-read */
 184         t = timespec_load(&st.st_mtim);
 185         if (c->vc_mtime != USEC_INFINITY && t == c->vc_mtime)
 186                 return 0;
 187
 188         c->vc_mtime = t;
 189         context_free_vconsole(c);
 190
 191         r = parse_env_file(NULL, "/etc/vconsole.conf",
 192                            "KEYMAP",        &c->vc_keymap,
 193                            "KEYMAP_TOGGLE", &c->vc_keymap_toggle);
 194         if (r < 0)
 195                 return r;
 196
 197         return 0;
 198 }
 199
 200 int x11_read_data(Context *c, sd_bus_message *m) {
 201         _cleanup_fclose_ FILE *f = NULL;
 202         bool in_section = false;
 203         struct stat st;
 204         usec_t t;
 205         int r;
 206
 207         /* Do not try to re-read the file within single bus operation. */
 208         if (m) {
 209                 if (m == c->x11_cache)
 210                         return 0;
 211
 212                 sd_bus_message_unref(c->x11_cache);
 213                 c->x11_cache = sd_bus_message_ref(m);
 214         }
 215
 216         if (stat("/etc/X11/xorg.conf.d/00-keyboard.conf", &st) < 0) {
 217                 if (errno != ENOENT)
 218                         return -errno;
 219
 220                 c->x11_mtime = USEC_INFINITY;
 221                 context_free_x11(c);
 222                 return 0;
 223         }
 224
 225         /* If mtime is not changed, then we do not need to re-read */
 226         t = timespec_load(&st.st_mtim);
 227         if (c->x11_mtime != USEC_INFINITY && t == c->x11_mtime)
 228                 return 0;
 229
 230         c->x11_mtime = t;
 231         context_free_x11(c);
 232
 233         f = fopen("/etc/X11/xorg.conf.d/00-keyboard.conf", "re");
 234         if (!f)
 235                 return -errno;
 236
 237         for (;;) {
 238                 _cleanup_free_ char *line = NULL;
 239                 char *l;
 240
 241                 r = read_line(f, LONG_LINE_MAX, &line);
 242                 if (r < 0)
 243                         return r;
 244                 if (r == 0)
 245                         break;
 246
 247                 l = strstrip(line);
 248                 if (IN_SET(l[0], 0, '#'))
 249                         continue;
 250
 251                 if (in_section && first_word(l, "Option")) {
 252                         _cleanup_strv_free_ char **a = NULL;
 253
 254                         r = strv_split_full(&a, l, WHITESPACE, EXTRACT_UNQUOTE);
 255                         if (r < 0)
 256                                 return r;
 257
 258                         if (strv_length(a) == 3) {
 259                                 char **p = NULL;
 260
 261                                 if (streq(a[1], "XkbLayout"))
 262                                         p = &c->x11_layout;
 263                                 else if (streq(a[1], "XkbModel"))
 264                                         p = &c->x11_model;
 265                                 else if (streq(a[1], "XkbVariant"))
 266                                         p = &c->x11_variant;
 267                                 else if (streq(a[1], "XkbOptions"))
 268                                         p = &c->x11_options;
 269
 270                                 if (p)
 271                                         free_and_replace(*p, a[2]);
 272                         }
 273
 274                 } else if (!in_section && first_word(l, "Section")) {
 275                         _cleanup_strv_free_ char **a = NULL;
 276
 277                         r = strv_split_full(&a, l, WHITESPACE, EXTRACT_UNQUOTE);
 278                         if (r < 0)
 279                                 return -ENOMEM;
 280
 281                         if (strv_length(a) == 2 && streq(a[1], "InputClass"))
 282                                 in_section = true;
 283
 284                 } else if (in_section && first_word(l, "EndSection"))
 285                         in_section = false;
 286         }
 287
 288         return 0;
 289 }
 290
 291 int locale_write_data(Context *c, char ***settings) {
 292         _cleanup_strv_free_ char **l = NULL;
 293         struct stat st;
 294         int r, p;
 295
 296         /* Set values will be returned as strv in *settings on success. */
 297
 298         for (p = 0; p < _VARIABLE_LC_MAX; p++) {
 299                 _cleanup_free_ char *t = NULL;
 300                 char **u;
 301                 const char *name;
 302
 303                 name = locale_variable_to_string(p);
 304                 assert(name);
 305
 306                 if (isempty(c->locale[p]))
 307                         continue;
 308
 309                 if (asprintf(&t, "%s=%s", name, c->locale[p]) < 0)
 310                         return -ENOMEM;
 311
 312                 u = strv_env_set(l, t);
 313                 if (!u)
 314                         return -ENOMEM;
 315
 316                 strv_free_and_replace(l, u);
 317         }
 318
 319         if (strv_isempty(l)) {
 320                 if (unlink("/etc/locale.conf") < 0)
 321                         return errno == ENOENT ? 0 : -errno;
 322
 323                 c->locale_mtime = USEC_INFINITY;
 324                 return 0;
 325         }
 326
 327         r = write_env_file_label("/etc/locale.conf", l);
 328         if (r < 0)
 329                 return r;
 330
 331         *settings = TAKE_PTR(l);
 332
 333         if (stat("/etc/locale.conf", &st) >= 0)
 334                 c->locale_mtime = timespec_load(&st.st_mtim);
 335
 336         return 0;
 337 }
 338
 339 int vconsole_write_data(Context *c) {
 340         _cleanup_strv_free_ char **l = NULL;
 341         struct stat st;
 342         int r;
 343
 344         r = load_env_file(NULL, "/etc/vconsole.conf", &l);
 345         if (r < 0 && r != -ENOENT)
 346                 return r;
 347
 348         if (isempty(c->vc_keymap))
 349                 l = strv_env_unset(l, "KEYMAP");
 350         else {
 351                 _cleanup_free_ char *s = NULL;
 352                 char **u;
 353
 354                 s = strjoin("KEYMAP=", c->vc_keymap);
 355                 if (!s)
 356                         return -ENOMEM;
 357
 358                 u = strv_env_set(l, s);
 359                 if (!u)
 360                         return -ENOMEM;
 361
 362                 strv_free_and_replace(l, u);
 363         }
 364
 365         if (isempty(c->vc_keymap_toggle))
 366                 l = strv_env_unset(l, "KEYMAP_TOGGLE");
 367         else  {
 368                 _cleanup_free_ char *s = NULL;
 369                 char **u;
 370
 371                 s = strjoin("KEYMAP_TOGGLE=", c->vc_keymap_toggle);
 372                 if (!s)
 373                         return -ENOMEM;
 374
 375                 u = strv_env_set(l, s);
 376                 if (!u)
 377                         return -ENOMEM;
 378
 379                 strv_free_and_replace(l, u);
 380         }
 381
 382         if (strv_isempty(l)) {
 383                 if (unlink("/etc/vconsole.conf") < 0)
 384                         return errno == ENOENT ? 0 : -errno;
 385
 386                 c->vc_mtime = USEC_INFINITY;
 387                 return 0;
 388         }
 389
 390         r = write_env_file_label("/etc/vconsole.conf", l);
 391         if (r < 0)
 392                 return r;
 393
 394         if (stat("/etc/vconsole.conf", &st) >= 0)
 395                 c->vc_mtime = timespec_load(&st.st_mtim);
 396
 397         return 0;
 398 }
 399
 400 int x11_write_data(Context *c) {
 401         _cleanup_fclose_ FILE *f = NULL;
 402         _cleanup_free_ char *temp_path = NULL;
 403         struct stat st;
 404         int r;
 405
 406         if (isempty(c->x11_layout) &&
 407             isempty(c->x11_model) &&
 408             isempty(c->x11_variant) &&
 409             isempty(c->x11_options)) {
 410
 411                 if (unlink("/etc/X11/xorg.conf.d/00-keyboard.conf") < 0)
 412                         return errno == ENOENT ? 0 : -errno;
 413
 414                 c->vc_mtime = USEC_INFINITY;
 415                 return 0;
 416         }
 417
 418         (void) mkdir_p_label("/etc/X11/xorg.conf.d", 0755);
 419         r = fopen_temporary("/etc/X11/xorg.conf.d/00-keyboard.conf", &f, &temp_path);
 420         if (r < 0)
 421                 return r;
 422
 423         (void) fchmod(fileno(f), 0644);
 424
 425         fputs("# Written by systemd-localed(8), read by systemd-localed and Xorg. It's\n"
 426               "# probably wise not to edit this file manually. Use localectl(1) to\n"
 427               "# instruct systemd-localed to update it.\n"
 428               "Section \"InputClass\"\n"
 429               "        Identifier \"system-keyboard\"\n"
 430               "        MatchIsKeyboard \"on\"\n", f);
 431
 432         if (!isempty(c->x11_layout))
 433                 fprintf(f, "        Option \"XkbLayout\" \"%s\"\n", c->x11_layout);
 434
 435         if (!isempty(c->x11_model))
 436                 fprintf(f, "        Option \"XkbModel\" \"%s\"\n", c->x11_model);
 437
 438         if (!isempty(c->x11_variant))
 439                 fprintf(f, "        Option \"XkbVariant\" \"%s\"\n", c->x11_variant);
 440
 441         if (!isempty(c->x11_options))
 442                 fprintf(f, "        Option \"XkbOptions\" \"%s\"\n", c->x11_options);
 443
 444         fputs("EndSection\n", f);
 445
 446         r = fflush_sync_and_check(f);
 447         if (r < 0)
 448                 goto fail;
 449
 450         if (rename(temp_path, "/etc/X11/xorg.conf.d/00-keyboard.conf") < 0) {
 451                 r = -errno;
 452                 goto fail;
 453         }
 454
 455         if (stat("/etc/X11/xorg.conf.d/00-keyboard.conf", &st) >= 0)
 456                 c->x11_mtime = timespec_load(&st.st_mtim);
 457
 458         return 0;
 459
 460 fail:
 461         if (temp_path)
 462                 (void) unlink(temp_path);
 463
 464         return r;
 465 }
 466
 467 static int read_next_mapping(const char* filename,
 468                              unsigned min_fields, unsigned max_fields,
 469                              FILE *f, unsigned *n, char ***a) {
 470         assert(f);
 471         assert(n);
 472         assert(a);
 473
 474         for (;;) {
 475                 _cleanup_free_ char *line = NULL;
 476                 size_t length;
 477                 char *l, **b;
 478                 int r;
 479
 480                 r = read_line(f, LONG_LINE_MAX, &line);
 481                 if (r < 0)
 482                         return r;
 483                 if (r == 0)
 484                         break;
 485
 486                 (*n)++;
 487
 488                 l = strstrip(line);
 489                 if (IN_SET(l[0], 0, '#'))
 490                         continue;
 491
 492                 r = strv_split_full(&b, l, WHITESPACE, EXTRACT_UNQUOTE);
 493                 if (r < 0)
 494                         return r;
 495
 496                 length = strv_length(b);
 497                 if (length < min_fields || length > max_fields) {
 498                         log_error("Invalid line %s:%u, ignoring.", filename, *n);
 499                         strv_free(b);
 500                         continue;
 501
 502                 }
 503
 504                 *a = b;
 505                 return 1;
 506         }
 507
 508         return 0;
 509 }
 510
 511 int vconsole_convert_to_x11(Context *c) {
 512         const char *map;
 513         int modified = -1;
 514
 515         map = systemd_kbd_model_map();
 516
 517         if (isempty(c->vc_keymap)) {
 518                 modified =
 519                         !isempty(c->x11_layout) ||
 520                         !isempty(c->x11_model) ||
 521                         !isempty(c->x11_variant) ||
 522                         !isempty(c->x11_options);
 523
 524                 context_free_x11(c);
 525         } else {
 526                 _cleanup_fclose_ FILE *f = NULL;
 527                 unsigned n = 0;
 528
 529                 f = fopen(map, "re");
 530                 if (!f)
 531                         return -errno;
 532
 533                 for (;;) {
 534                         _cleanup_strv_free_ char **a = NULL;
 535                         int r;
 536
 537                         r = read_next_mapping(map, 5, UINT_MAX, f, &n, &a);
 538                         if (r < 0)
 539                                 return r;
 540                         if (r == 0)
 541                                 break;
 542
 543                         if (!streq(c->vc_keymap, a[0]))
 544                                 continue;
 545
 546                         if (!streq_ptr(c->x11_layout, empty_or_dash_to_null(a[1])) ||
 547                             !streq_ptr(c->x11_model, empty_or_dash_to_null(a[2])) ||
 548                             !streq_ptr(c->x11_variant, empty_or_dash_to_null(a[3])) ||
 549                             !streq_ptr(c->x11_options, empty_or_dash_to_null(a[4]))) {
 550
 551                                 if (free_and_strdup(&c->x11_layout, empty_or_dash_to_null(a[1])) < 0 ||
 552                                     free_and_strdup(&c->x11_model, empty_or_dash_to_null(a[2])) < 0 ||
 553                                     free_and_strdup(&c->x11_variant, empty_or_dash_to_null(a[3])) < 0 ||
 554                                     free_and_strdup(&c->x11_options, empty_or_dash_to_null(a[4])) < 0)
 555                                         return -ENOMEM;
 556
 557                                 modified = true;
 558                         }
 559
 560                         break;
 561                 }
 562         }
 563
 564         if (modified > 0)
 565                 log_info("Changing X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
 566                          strempty(c->x11_layout),
 567                          strempty(c->x11_model),
 568                          strempty(c->x11_variant),
 569                          strempty(c->x11_options));
 570         else if (modified < 0)
 571                 log_notice("X11 keyboard layout was not modified: no conversion found for \"%s\".",
 572                            c->vc_keymap);
 573         else
 574                 log_debug("X11 keyboard layout did not need to be modified.");
 575
 576         return modified > 0;
 577 }
 578
 579 int find_converted_keymap(const char *x11_layout, const char *x11_variant, char **new_keymap) {
 580         const char *dir;
 581         _cleanup_free_ char *n;
 582
 583         if (x11_variant)
 584                 n = strjoin(x11_layout, "-", x11_variant);
 585         else
 586                 n = strdup(x11_layout);
 587         if (!n)
 588                 return -ENOMEM;
 589
 590         NULSTR_FOREACH(dir, KBD_KEYMAP_DIRS) {
 591                 _cleanup_free_ char *p = NULL, *pz = NULL;
 592                 bool uncompressed;
 593
 594                 p = strjoin(dir, "xkb/", n, ".map");
 595                 pz = strjoin(dir, "xkb/", n, ".map.gz");
 596                 if (!p || !pz)
 597                         return -ENOMEM;
 598
 599                 uncompressed = access(p, F_OK) == 0;
 600                 if (uncompressed || access(pz, F_OK) == 0) {
 601                         log_debug("Found converted keymap %s at %s",
 602                                   n, uncompressed ? p : pz);
 603
 604                         *new_keymap = TAKE_PTR(n);
 605                         return 1;
 606                 }
 607         }
 608
 609         return 0;
 610 }
 611
 612 int find_legacy_keymap(Context *c, char **ret) {
 613         const char *map;
 614         _cleanup_fclose_ FILE *f = NULL;
 615         _cleanup_free_ char *new_keymap = NULL;
 616         unsigned n = 0;
 617         unsigned best_matching = 0;
 618         int r;
 619
 620         assert(!isempty(c->x11_layout));
 621
 622         map = systemd_kbd_model_map();
 623
 624         f = fopen(map, "re");
 625         if (!f)
 626                 return -errno;
 627
 628         for (;;) {
 629                 _cleanup_strv_free_ char **a = NULL;
 630                 unsigned matching = 0;
 631
 632                 r = read_next_mapping(map, 5, UINT_MAX, f, &n, &a);
 633                 if (r < 0)
 634                         return r;
 635                 if (r == 0)
 636                         break;
 637
 638                 /* Determine how well matching this entry is */
 639                 if (streq(c->x11_layout, a[1]))
 640                         /* If we got an exact match, this is best */
 641                         matching = 10;
 642                 else {
 643                         /* We have multiple X layouts, look for an
 644                          * entry that matches our key with everything
 645                          * but the first layout stripped off. */
 646                         if (startswith_comma(c->x11_layout, a[1]))
 647                                 matching = 5;
 648                         else  {
 649                                 _cleanup_free_ char *x = NULL;
 650
 651                                 /* If that didn't work, strip off the
 652                                  * other layouts from the entry, too */
 653                                 x = strndup(a[1], strcspn(a[1], ","));
 654                                 if (startswith_comma(c->x11_layout, x))
 655                                         matching = 1;
 656                         }
 657                 }
 658
 659                 if (matching > 0) {
 660                         if (isempty(c->x11_model) || streq_ptr(c->x11_model, a[2])) {
 661                                 matching++;
 662
 663                                 if (streq_ptr(c->x11_variant, a[3])) {
 664                                         matching++;
 665
 666                                         if (streq_ptr(c->x11_options, a[4]))
 667                                                 matching++;
 668                                 }
 669                         }
 670                 }
 671
 672                 /* The best matching entry so far, then let's save that */
 673                 if (matching >= MAX(best_matching, 1u)) {
 674                         log_debug("Found legacy keymap %s with score %u",
 675                                   a[0], matching);
 676
 677                         if (matching > best_matching) {
 678                                 best_matching = matching;
 679
 680                                 r = free_and_strdup(&new_keymap, a[0]);
 681                                 if (r < 0)
 682                                         return r;
 683                         }
 684                 }
 685         }
 686
 687         if (best_matching < 10 && c->x11_layout) {
 688                 /* The best match is only the first part of the X11
 689                  * keymap. Check if we have a converted map which
 690                  * matches just the first layout.
 691                  */
 692                 char *l, *v = NULL, *converted;
 693
 694                 l = strndupa(c->x11_layout, strcspn(c->x11_layout, ","));
 695                 if (c->x11_variant)
 696                         v = strndupa(c->x11_variant, strcspn(c->x11_variant, ","));
 697                 r = find_converted_keymap(l, v, &converted);
 698                 if (r < 0)
 699                         return r;
 700                 if (r > 0)
 701                         free_and_replace(new_keymap, converted);
 702         }
 703
 704         *ret = TAKE_PTR(new_keymap);
 705         return (bool) *ret;
 706 }
 707
 708 int find_language_fallback(const char *lang, char **language) {
 709         const char *map;
 710         _cleanup_fclose_ FILE *f = NULL;
 711         unsigned n = 0;
 712
 713         assert(lang);
 714         assert(language);
 715
 716         map = systemd_language_fallback_map();
 717
 718         f = fopen(map, "re");
 719         if (!f)
 720                 return -errno;
 721
 722         for (;;) {
 723                 _cleanup_strv_free_ char **a = NULL;
 724                 int r;
 725
 726                 r = read_next_mapping(map, 2, 2, f, &n, &a);
 727                 if (r <= 0)
 728                         return r;
 729
 730                 if (streq(lang, a[0])) {
 731                         assert(strv_length(a) == 2);
 732                         *language = TAKE_PTR(a[1]);
 733                         return 1;
 734                 }
 735         }
 736
 737         assert_not_reached("should not be here");
 738 }
 739
 740 int x11_convert_to_vconsole(Context *c) {
 741         bool modified = false;
 742
 743         if (isempty(c->x11_layout)) {
 744                 modified =
 745                         !isempty(c->vc_keymap) ||
 746                         !isempty(c->vc_keymap_toggle);
 747
 748                 context_free_vconsole(c);
 749         } else {
 750                 _cleanup_free_ char *new_keymap = NULL;
 751                 int r;
 752
 753                 r = find_converted_keymap(c->x11_layout, c->x11_variant, &new_keymap);
 754                 if (r < 0)
 755                         return r;
 756                 else if (r == 0) {
 757                         r = find_legacy_keymap(c, &new_keymap);
 758                         if (r < 0)
 759                                 return r;
 760                 }
 761                 if (r == 0)
 762                         /* We search for layout-variant match first, but then we also look
 763                          * for anything which matches just the layout. So it's accurate to say
 764                          * that we couldn't find anything which matches the layout. */
 765                         log_notice("No conversion to virtual console map found for \"%s\".",
 766                                    c->x11_layout);
 767
 768                 if (!streq_ptr(c->vc_keymap, new_keymap)) {
 769                         free_and_replace(c->vc_keymap, new_keymap);
 770                         c->vc_keymap_toggle = mfree(c->vc_keymap_toggle);
 771                         modified = true;
 772                 }
 773         }
 774
 775         if (modified)
 776                 log_info("Changing virtual console keymap to '%s' toggle '%s'",
 777                          strempty(c->vc_keymap), strempty(c->vc_keymap_toggle));
 778         else
 779                 log_debug("Virtual console keymap was not modified.");
 780
 781         return modified;
 782 }