src/locale/keymap-util.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 <stdio_ext.h>
   9 #include <string.h>
  10 #include <unistd.h>
  11
  12 #include "def.h"
  13 #include "env-util.h"
  14 #include "fd-util.h"
  15 #include "fileio-label.h"
  16 #include "fileio.h"
  17 #include "keymap-util.h"
  18 #include "locale-util.h"
  19 #include "macro.h"
  20 #include "mkdir.h"
  21 #include "string-util.h"
  22 #include "strv.h"
  23
  24 static bool startswith_comma(const char *s, const char *prefix) {
  25         s = startswith(s, prefix);
  26         if (!s)
  27                 return false;
  28
  29         return IN_SET(*s, ',', '\0');
  30 }
  31
  32 static const char* strnulldash(const char *s) {
  33         return isempty(s) || streq(s, "-") ? NULL : s;
  34 }
  35
  36 static const char* systemd_kbd_model_map(void) {
  37         const char* s;
  38
  39         s = getenv("SYSTEMD_KBD_MODEL_MAP");
  40         if (s)
  41                 return s;
  42
  43         return SYSTEMD_KBD_MODEL_MAP;
  44 }
  45
  46 static const char* systemd_language_fallback_map(void) {
  47         const char* s;
  48
  49         s = getenv("SYSTEMD_LANGUAGE_FALLBACK_MAP");
  50         if (s)
  51                 return s;
  52
  53         return SYSTEMD_LANGUAGE_FALLBACK_MAP;
  54 }
  55
  56 static void context_free_x11(Context *c) {
  57         c->x11_layout = mfree(c->x11_layout);
  58         c->x11_options = mfree(c->x11_options);
  59         c->x11_model = mfree(c->x11_model);
  60         c->x11_variant = mfree(c->x11_variant);
  61 }
  62
  63 static void context_free_vconsole(Context *c) {
  64         c->vc_keymap = mfree(c->vc_keymap);
  65         c->vc_keymap_toggle = mfree(c->vc_keymap_toggle);
  66 }
  67
  68 static void context_free_locale(Context *c) {
  69         int p;
  70
  71         for (p = 0; p < _VARIABLE_LC_MAX; p++)
  72                 c->locale[p] = mfree(c->locale[p]);
  73 }
  74
  75 void context_free(Context *c) {
  76         context_free_locale(c);
  77         context_free_x11(c);
  78         context_free_vconsole(c);
  79 };
  80
  81 void locale_simplify(char *locale[_VARIABLE_LC_MAX]) {
  82         int p;
  83
  84         for (p = VARIABLE_LANG+1; p < _VARIABLE_LC_MAX; p++)
  85                 if (isempty(locale[p]) || streq_ptr(locale[VARIABLE_LANG], locale[p]))
  86                         locale[p] = mfree(locale[p]);
  87 }
  88
  89 int locale_read_data(Context *c, sd_bus_message *m) {
  90         struct stat st;
  91         int r;
  92
  93         /* Do not try to re-read the file within single bus operation. */
  94         if (m && m == c->locale_cache)
  95                 return 0;
  96
  97         /* To suppress multiple call of stat(), store the message to cache here. */
  98         c->locale_cache = m;
  99
 100         r = stat("/etc/locale.conf", &st);
 101         if (r < 0 && errno != ENOENT)
 102                 return -errno;
 103
 104         if (r >= 0) {
 105                 usec_t t;
 106
 107                 /* If mtime is not changed, then we do not need to re-read the file. */
 108                 t = timespec_load(&st.st_mtim);
 109                 if (c->locale_mtime != USEC_INFINITY && t == c->locale_mtime)
 110                         return 0;
 111
 112                 c->locale_mtime = t;
 113                 context_free_locale(c);
 114
 115                 r = parse_env_file(NULL, "/etc/locale.conf", NEWLINE,
 116                                    "LANG",              &c->locale[VARIABLE_LANG],
 117                                    "LANGUAGE",          &c->locale[VARIABLE_LANGUAGE],
 118                                    "LC_CTYPE",          &c->locale[VARIABLE_LC_CTYPE],
 119                                    "LC_NUMERIC",        &c->locale[VARIABLE_LC_NUMERIC],
 120                                    "LC_TIME",           &c->locale[VARIABLE_LC_TIME],
 121                                    "LC_COLLATE",        &c->locale[VARIABLE_LC_COLLATE],
 122                                    "LC_MONETARY",       &c->locale[VARIABLE_LC_MONETARY],
 123                                    "LC_MESSAGES",       &c->locale[VARIABLE_LC_MESSAGES],
 124                                    "LC_PAPER",          &c->locale[VARIABLE_LC_PAPER],
 125                                    "LC_NAME",           &c->locale[VARIABLE_LC_NAME],
 126                                    "LC_ADDRESS",        &c->locale[VARIABLE_LC_ADDRESS],
 127                                    "LC_TELEPHONE",      &c->locale[VARIABLE_LC_TELEPHONE],
 128                                    "LC_MEASUREMENT",    &c->locale[VARIABLE_LC_MEASUREMENT],
 129                                    "LC_IDENTIFICATION", &c->locale[VARIABLE_LC_IDENTIFICATION],
 130                                    NULL);
 131                 if (r < 0)
 132                         return r;
 133         } else {
 134                 int p;
 135
 136                 c->locale_mtime = USEC_INFINITY;
 137                 context_free_locale(c);
 138
 139                 /* Fill in what we got passed from systemd. */
 140                 for (p = 0; p < _VARIABLE_LC_MAX; p++) {
 141                         const char *name;
 142
 143                         name = locale_variable_to_string(p);
 144                         assert(name);
 145
 146                         r = free_and_strdup(&c->locale[p], empty_to_null(getenv(name)));
 147                         if (r < 0)
 148                                 return r;
 149                 }
 150         }
 151
 152         locale_simplify(c->locale);
 153         return 0;
 154 }
 155
 156 int vconsole_read_data(Context *c, sd_bus_message *m) {
 157         struct stat st;
 158         usec_t t;
 159         int r;
 160
 161         /* Do not try to re-read the file within single bus operation. */
 162         if (m && m == c->vc_cache)
 163                 return 0;
 164
 165         /* To suppress multiple call of stat(), store the message to cache here. */
 166         c->vc_cache = m;
 167
 168         if (stat("/etc/vconsole.conf", &st) < 0) {
 169                 if (errno != ENOENT)
 170                         return -errno;
 171
 172                 c->vc_mtime = USEC_INFINITY;
 173                 context_free_vconsole(c);
 174                 return 0;
 175         }
 176
 177         /* If mtime is not changed, then we do not need to re-read */
 178         t = timespec_load(&st.st_mtim);
 179         if (c->vc_mtime != USEC_INFINITY && t == c->vc_mtime)
 180                 return 0;
 181
 182         c->vc_mtime = t;
 183         context_free_vconsole(c);
 184
 185         r = parse_env_file(NULL, "/etc/vconsole.conf", NEWLINE,
 186                            "KEYMAP",        &c->vc_keymap,
 187                            "KEYMAP_TOGGLE", &c->vc_keymap_toggle,
 188                            NULL);
 189         if (r < 0)
 190                 return r;
 191
 192         return 0;
 193 }
 194
 195 int x11_read_data(Context *c, sd_bus_message *m) {
 196         _cleanup_fclose_ FILE *f = NULL;
 197         bool in_section = false;
 198         char line[LINE_MAX];
 199         struct stat st;
 200         usec_t t;
 201         int r;
 202
 203         /* Do not try to re-read the file within single bus operation. */
 204         if (m && m == c->x11_cache)
 205                 return 0;
 206
 207         /* To suppress multiple call of stat(), store the message to cache here. */
 208         c->x11_cache = m;
 209
 210         if (stat("/etc/X11/xorg.conf.d/00-keyboard.conf", &st) < 0) {
 211                 if (errno != ENOENT)
 212                         return -errno;
 213
 214                 c->x11_mtime = USEC_INFINITY;
 215                 context_free_x11(c);
 216                 return 0;
 217         }
 218
 219         /* If mtime is not changed, then we do not need to re-read */
 220         t = timespec_load(&st.st_mtim);
 221         if (c->x11_mtime != USEC_INFINITY && t == c->x11_mtime)
 222                 return 0;
 223
 224         c->x11_mtime = t;
 225         context_free_x11(c);
 226
 227         f = fopen("/etc/X11/xorg.conf.d/00-keyboard.conf", "re");
 228         if (!f)
 229                 return -errno;
 230
 231         while (fgets(line, sizeof(line), f)) {
 232                 char *l;
 233
 234                 char_array_0(line);
 235                 l = strstrip(line);
 236
 237                 if (IN_SET(l[0], 0, '#'))
 238                         continue;
 239
 240                 if (in_section && first_word(l, "Option")) {
 241                         _cleanup_strv_free_ char **a = NULL;
 242
 243                         r = strv_split_extract(&a, l, WHITESPACE, EXTRACT_QUOTES);
 244                         if (r < 0)
 245                                 return r;
 246
 247                         if (strv_length(a) == 3) {
 248                                 char **p = NULL;
 249
 250                                 if (streq(a[1], "XkbLayout"))
 251                                         p = &c->x11_layout;
 252                                 else if (streq(a[1], "XkbModel"))
 253                                         p = &c->x11_model;
 254                                 else if (streq(a[1], "XkbVariant"))
 255                                         p = &c->x11_variant;
 256                                 else if (streq(a[1], "XkbOptions"))
 257                                         p = &c->x11_options;
 258
 259                                 if (p) {
 260                                         free_and_replace(*p, a[2]);
 261                                 }
 262                         }
 263
 264                 } else if (!in_section && first_word(l, "Section")) {
 265                         _cleanup_strv_free_ char **a = NULL;
 266
 267                         r = strv_split_extract(&a, l, WHITESPACE, EXTRACT_QUOTES);
 268                         if (r < 0)
 269                                 return -ENOMEM;
 270
 271                         if (strv_length(a) == 2 && streq(a[1], "InputClass"))
 272                                 in_section = true;
 273
 274                 } else if (in_section && first_word(l, "EndSection"))
 275                         in_section = false;
 276         }
 277
 278         return 0;
 279 }
 280
 281 int locale_write_data(Context *c, char ***settings) {
 282         _cleanup_strv_free_ char **l = NULL;
 283         struct stat st;
 284         int r, p;
 285
 286         /* Set values will be returned as strv in *settings on success. */
 287
 288         for (p = 0; p < _VARIABLE_LC_MAX; p++) {
 289                 _cleanup_free_ char *t = NULL;
 290                 char **u;
 291                 const char *name;
 292
 293                 name = locale_variable_to_string(p);
 294                 assert(name);
 295
 296                 if (isempty(c->locale[p]))
 297                         continue;
 298
 299                 if (asprintf(&t, "%s=%s", name, c->locale[p]) < 0)
 300                         return -ENOMEM;
 301
 302                 u = strv_env_set(l, t);
 303                 if (!u)
 304                         return -ENOMEM;
 305
 306                 strv_free_and_replace(l, u);
 307         }
 308
 309         if (strv_isempty(l)) {
 310                 if (unlink("/etc/locale.conf") < 0)
 311                         return errno == ENOENT ? 0 : -errno;
 312
 313                 c->locale_mtime = USEC_INFINITY;
 314                 return 0;
 315         }
 316
 317         r = write_env_file_label("/etc/locale.conf", l);
 318         if (r < 0)
 319                 return r;
 320
 321         *settings = TAKE_PTR(l);
 322
 323         if (stat("/etc/locale.conf", &st) >= 0)
 324                 c->locale_mtime = timespec_load(&st.st_mtim);
 325
 326         return 0;
 327 }
 328
 329 int vconsole_write_data(Context *c) {
 330         _cleanup_strv_free_ char **l = NULL;
 331         struct stat st;
 332         int r;
 333
 334         r = load_env_file(NULL, "/etc/vconsole.conf", NULL, &l);
 335         if (r < 0 && r != -ENOENT)
 336                 return r;
 337
 338         if (isempty(c->vc_keymap))
 339                 l = strv_env_unset(l, "KEYMAP");
 340         else {
 341                 _cleanup_free_ char *s = NULL;
 342                 char **u;
 343
 344                 s = strappend("KEYMAP=", c->vc_keymap);
 345                 if (!s)
 346                         return -ENOMEM;
 347
 348                 u = strv_env_set(l, s);
 349                 if (!u)
 350                         return -ENOMEM;
 351
 352                 strv_free_and_replace(l, u);
 353         }
 354
 355         if (isempty(c->vc_keymap_toggle))
 356                 l = strv_env_unset(l, "KEYMAP_TOGGLE");
 357         else  {
 358                 _cleanup_free_ char *s = NULL;
 359                 char **u;
 360
 361                 s = strappend("KEYMAP_TOGGLE=", c->vc_keymap_toggle);
 362                 if (!s)
 363                         return -ENOMEM;
 364
 365                 u = strv_env_set(l, s);
 366                 if (!u)
 367                         return -ENOMEM;
 368
 369                 strv_free_and_replace(l, u);
 370         }
 371
 372         if (strv_isempty(l)) {
 373                 if (unlink("/etc/vconsole.conf") < 0)
 374                         return errno == ENOENT ? 0 : -errno;
 375
 376                 c->vc_mtime = USEC_INFINITY;
 377                 return 0;
 378         }
 379
 380         r = write_env_file_label("/etc/vconsole.conf", l);
 381         if (r < 0)
 382                 return r;
 383
 384         if (stat("/etc/vconsole.conf", &st) >= 0)
 385                 c->vc_mtime = timespec_load(&st.st_mtim);
 386
 387         return 0;
 388 }
 389
 390 int x11_write_data(Context *c) {
 391         _cleanup_fclose_ FILE *f = NULL;
 392         _cleanup_free_ char *temp_path = NULL;
 393         struct stat st;
 394         int r;
 395
 396         if (isempty(c->x11_layout) &&
 397             isempty(c->x11_model) &&
 398             isempty(c->x11_variant) &&
 399             isempty(c->x11_options)) {
 400
 401                 if (unlink("/etc/X11/xorg.conf.d/00-keyboard.conf") < 0)
 402                         return errno == ENOENT ? 0 : -errno;
 403
 404                 c->vc_mtime = USEC_INFINITY;
 405                 return 0;
 406         }
 407
 408         mkdir_p_label("/etc/X11/xorg.conf.d", 0755);
 409
 410         r = fopen_temporary("/etc/X11/xorg.conf.d/00-keyboard.conf", &f, &temp_path);
 411         if (r < 0)
 412                 return r;
 413
 414         (void) __fsetlocking(f, FSETLOCKING_BYCALLER);
 415         (void) fchmod(fileno(f), 0644);
 416
 417         fputs("# Written by systemd-localed(8), read by systemd-localed and Xorg. It's\n"
 418               "# probably wise not to edit this file manually. Use localectl(1) to\n"
 419               "# instruct systemd-localed to update it.\n"
 420               "Section \"InputClass\"\n"
 421               "        Identifier \"system-keyboard\"\n"
 422               "        MatchIsKeyboard \"on\"\n", f);
 423
 424         if (!isempty(c->x11_layout))
 425                 fprintf(f, "        Option \"XkbLayout\" \"%s\"\n", c->x11_layout);
 426
 427         if (!isempty(c->x11_model))
 428                 fprintf(f, "        Option \"XkbModel\" \"%s\"\n", c->x11_model);
 429
 430         if (!isempty(c->x11_variant))
 431                 fprintf(f, "        Option \"XkbVariant\" \"%s\"\n", c->x11_variant);
 432
 433         if (!isempty(c->x11_options))
 434                 fprintf(f, "        Option \"XkbOptions\" \"%s\"\n", c->x11_options);
 435
 436         fputs("EndSection\n", f);
 437
 438         r = fflush_sync_and_check(f);
 439         if (r < 0)
 440                 goto fail;
 441
 442         if (rename(temp_path, "/etc/X11/xorg.conf.d/00-keyboard.conf") < 0) {
 443                 r = -errno;
 444                 goto fail;
 445         }
 446
 447         if (stat("/etc/X11/xorg.conf.d/00-keyboard.conf", &st) >= 0)
 448                 c->x11_mtime = timespec_load(&st.st_mtim);
 449
 450         return 0;
 451
 452 fail:
 453         if (temp_path)
 454                 (void) unlink(temp_path);
 455
 456         return r;
 457 }
 458
 459 static int read_next_mapping(const char* filename,
 460                              unsigned min_fields, unsigned max_fields,
 461                              FILE *f, unsigned *n, char ***a) {
 462         assert(f);
 463         assert(n);
 464         assert(a);
 465
 466         for (;;) {
 467                 char line[LINE_MAX];
 468                 char *l, **b;
 469                 int r;
 470                 size_t length;
 471
 472                 errno = 0;
 473                 if (!fgets(line, sizeof(line), f)) {
 474
 475                         if (ferror(f))
 476                                 return errno > 0 ? -errno : -EIO;
 477
 478                         return 0;
 479                 }
 480
 481                 (*n)++;
 482
 483                 l = strstrip(line);
 484                 if (IN_SET(l[0], 0, '#'))
 485                         continue;
 486
 487                 r = strv_split_extract(&b, l, WHITESPACE, EXTRACT_QUOTES);
 488                 if (r < 0)
 489                         return r;
 490
 491                 length = strv_length(b);
 492                 if (length < min_fields || length > max_fields) {
 493                         log_error("Invalid line %s:%u, ignoring.", filename, *n);
 494                         strv_free(b);
 495                         continue;
 496
 497                 }
 498
 499                 *a = b;
 500                 return 1;
 501         }
 502 }
 503
 504 int vconsole_convert_to_x11(Context *c) {
 505         const char *map;
 506         int modified = -1;
 507
 508         map = systemd_kbd_model_map();
 509
 510         if (isempty(c->vc_keymap)) {
 511                 modified =
 512                         !isempty(c->x11_layout) ||
 513                         !isempty(c->x11_model) ||
 514                         !isempty(c->x11_variant) ||
 515                         !isempty(c->x11_options);
 516
 517                 context_free_x11(c);
 518         } else {
 519                 _cleanup_fclose_ FILE *f = NULL;
 520                 unsigned n = 0;
 521
 522                 f = fopen(map, "re");
 523                 if (!f)
 524                         return -errno;
 525
 526                 for (;;) {
 527                         _cleanup_strv_free_ char **a = NULL;
 528                         int r;
 529
 530                         r = read_next_mapping(map, 5, UINT_MAX, f, &n, &a);
 531                         if (r < 0)
 532                                 return r;
 533                         if (r == 0)
 534                                 break;
 535
 536                         if (!streq(c->vc_keymap, a[0]))
 537                                 continue;
 538
 539                         if (!streq_ptr(c->x11_layout, strnulldash(a[1])) ||
 540                             !streq_ptr(c->x11_model, strnulldash(a[2])) ||
 541                             !streq_ptr(c->x11_variant, strnulldash(a[3])) ||
 542                             !streq_ptr(c->x11_options, strnulldash(a[4]))) {
 543
 544                                 if (free_and_strdup(&c->x11_layout, strnulldash(a[1])) < 0 ||
 545                                     free_and_strdup(&c->x11_model, strnulldash(a[2])) < 0 ||
 546                                     free_and_strdup(&c->x11_variant, strnulldash(a[3])) < 0 ||
 547                                     free_and_strdup(&c->x11_options, strnulldash(a[4])) < 0)
 548                                         return -ENOMEM;
 549
 550                                 modified = true;
 551                         }
 552
 553                         break;
 554                 }
 555         }
 556
 557         if (modified > 0)
 558                 log_info("Changing X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
 559                          strempty(c->x11_layout),
 560                          strempty(c->x11_model),
 561                          strempty(c->x11_variant),
 562                          strempty(c->x11_options));
 563         else if (modified < 0)
 564                 log_notice("X11 keyboard layout was not modified: no conversion found for \"%s\".",
 565                            c->vc_keymap);
 566         else
 567                 log_debug("X11 keyboard layout did not need to be modified.");
 568
 569         return modified > 0;
 570 }
 571
 572 int find_converted_keymap(const char *x11_layout, const char *x11_variant, char **new_keymap) {
 573         const char *dir;
 574         _cleanup_free_ char *n;
 575
 576         if (x11_variant)
 577                 n = strjoin(x11_layout, "-", x11_variant);
 578         else
 579                 n = strdup(x11_layout);
 580         if (!n)
 581                 return -ENOMEM;
 582
 583         NULSTR_FOREACH(dir, KBD_KEYMAP_DIRS) {
 584                 _cleanup_free_ char *p = NULL, *pz = NULL;
 585                 bool uncompressed;
 586
 587                 p = strjoin(dir, "xkb/", n, ".map");
 588                 pz = strjoin(dir, "xkb/", n, ".map.gz");
 589                 if (!p || !pz)
 590                         return -ENOMEM;
 591
 592                 uncompressed = access(p, F_OK) == 0;
 593                 if (uncompressed || access(pz, F_OK) == 0) {
 594                         log_debug("Found converted keymap %s at %s",
 595                                   n, uncompressed ? p : pz);
 596
 597                         *new_keymap = TAKE_PTR(n);
 598                         return 1;
 599                 }
 600         }
 601
 602         return 0;
 603 }
 604
 605 int find_legacy_keymap(Context *c, char **ret) {
 606         const char *map;
 607         _cleanup_fclose_ FILE *f = NULL;
 608         _cleanup_free_ char *new_keymap = NULL;
 609         unsigned n = 0;
 610         unsigned best_matching = 0;
 611         int r;
 612
 613         assert(!isempty(c->x11_layout));
 614
 615         map = systemd_kbd_model_map();
 616
 617         f = fopen(map, "re");
 618         if (!f)
 619                 return -errno;
 620
 621         for (;;) {
 622                 _cleanup_strv_free_ char **a = NULL;
 623                 unsigned matching = 0;
 624
 625                 r = read_next_mapping(map, 5, UINT_MAX, f, &n, &a);
 626                 if (r < 0)
 627                         return r;
 628                 if (r == 0)
 629                         break;
 630
 631                 /* Determine how well matching this entry is */
 632                 if (streq(c->x11_layout, a[1]))
 633                         /* If we got an exact match, this is best */
 634                         matching = 10;
 635                 else {
 636                         /* We have multiple X layouts, look for an
 637                          * entry that matches our key with everything
 638                          * but the first layout stripped off. */
 639                         if (startswith_comma(c->x11_layout, a[1]))
 640                                 matching = 5;
 641                         else  {
 642                                 char *x;
 643
 644                                 /* If that didn't work, strip off the
 645                                  * other layouts from the entry, too */
 646                                 x = strndupa(a[1], strcspn(a[1], ","));
 647                                 if (startswith_comma(c->x11_layout, x))
 648                                         matching = 1;
 649                         }
 650                 }
 651
 652                 if (matching > 0) {
 653                         if (isempty(c->x11_model) || streq_ptr(c->x11_model, a[2])) {
 654                                 matching++;
 655
 656                                 if (streq_ptr(c->x11_variant, a[3])) {
 657                                         matching++;
 658
 659                                         if (streq_ptr(c->x11_options, a[4]))
 660                                                 matching++;
 661                                 }
 662                         }
 663                 }
 664
 665                 /* The best matching entry so far, then let's save that */
 666                 if (matching >= MAX(best_matching, 1u)) {
 667                         log_debug("Found legacy keymap %s with score %u",
 668                                   a[0], matching);
 669
 670                         if (matching > best_matching) {
 671                                 best_matching = matching;
 672
 673                                 r = free_and_strdup(&new_keymap, a[0]);
 674                                 if (r < 0)
 675                                         return r;
 676                         }
 677                 }
 678         }
 679
 680         if (best_matching < 10 && c->x11_layout) {
 681                 /* The best match is only the first part of the X11
 682                  * keymap. Check if we have a converted map which
 683                  * matches just the first layout.
 684                  */
 685                 char *l, *v = NULL, *converted;
 686
 687                 l = strndupa(c->x11_layout, strcspn(c->x11_layout, ","));
 688                 if (c->x11_variant)
 689                         v = strndupa(c->x11_variant, strcspn(c->x11_variant, ","));
 690                 r = find_converted_keymap(l, v, &converted);
 691                 if (r < 0)
 692                         return r;
 693                 if (r > 0)
 694                         free_and_replace(new_keymap, converted);
 695         }
 696
 697         *ret = TAKE_PTR(new_keymap);
 698         return (bool) *ret;
 699 }
 700
 701 int find_language_fallback(const char *lang, char **language) {
 702         const char *map;
 703         _cleanup_fclose_ FILE *f = NULL;
 704         unsigned n = 0;
 705
 706         assert(lang);
 707         assert(language);
 708
 709         map = systemd_language_fallback_map();
 710
 711         f = fopen(map, "re");
 712         if (!f)
 713                 return -errno;
 714
 715         for (;;) {
 716                 _cleanup_strv_free_ char **a = NULL;
 717                 int r;
 718
 719                 r = read_next_mapping(map, 2, 2, f, &n, &a);
 720                 if (r <= 0)
 721                         return r;
 722
 723                 if (streq(lang, a[0])) {
 724                         assert(strv_length(a) == 2);
 725                         *language = TAKE_PTR(a[1]);
 726                         return 1;
 727                 }
 728         }
 729
 730         assert_not_reached("should not be here");
 731 }
 732
 733 int x11_convert_to_vconsole(Context *c) {
 734         bool modified = false;
 735
 736         if (isempty(c->x11_layout)) {
 737                 modified =
 738                         !isempty(c->vc_keymap) ||
 739                         !isempty(c->vc_keymap_toggle);
 740
 741                 context_free_vconsole(c);
 742         } else {
 743                 _cleanup_free_ char *new_keymap = NULL;
 744                 int r;
 745
 746                 r = find_converted_keymap(c->x11_layout, c->x11_variant, &new_keymap);
 747                 if (r < 0)
 748                         return r;
 749                 else if (r == 0) {
 750                         r = find_legacy_keymap(c, &new_keymap);
 751                         if (r < 0)
 752                                 return r;
 753                 }
 754                 if (r == 0)
 755                         /* We search for layout-variant match first, but then we also look
 756                          * for anything which matches just the layout. So it's accurate to say
 757                          * that we couldn't find anything which matches the layout. */
 758                         log_notice("No conversion to virtual console map found for \"%s\".",
 759                                    c->x11_layout);
 760
 761                 if (!streq_ptr(c->vc_keymap, new_keymap)) {
 762                         free_and_replace(c->vc_keymap, new_keymap);
 763                         c->vc_keymap_toggle = mfree(c->vc_keymap_toggle);
 764                         modified = true;
 765                 }
 766         }
 767
 768         if (modified)
 769                 log_info("Changing virtual console keymap to '%s' toggle '%s'",
 770                          strempty(c->vc_keymap), strempty(c->vc_keymap_toggle));
 771         else
 772                 log_debug("Virtual console keymap was not modified.");
 773
 774         return modified;
 775 }