src/locale/keymap-util.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <errno.h>
   4 #include <stdio_ext.h>
   5 #include <string.h>
   6 #include <unistd.h>
   7
   8 #include "bus-util.h"
   9 #include "def.h"
  10 #include "env-util.h"
  11 #include "fd-util.h"
  12 #include "fileio-label.h"
  13 #include "fileio.h"
  14 #include "keymap-util.h"
  15 #include "locale-util.h"
  16 #include "macro.h"
  17 #include "mkdir.h"
  18 #include "string-util.h"
  19 #include "strv.h"
  20 #include "tmpfile-util.h"
  21
  22 static bool startswith_comma(const char *s, const char *prefix) {
  23         s = startswith(s, prefix);
  24         if (!s)
  25                 return false;
  26
  27         return IN_SET(*s, ',', '\0');
  28 }
  29
  30 static const char* strnulldash(const char *s) {
  31         return isempty(s) || streq(s, "-") ? NULL : s;
  32 }
  33
  34 static const char* systemd_kbd_model_map(void) {
  35         const char* s;
  36
  37         s = getenv("SYSTEMD_KBD_MODEL_MAP");
  38         if (s)
  39                 return s;
  40
  41         return SYSTEMD_KBD_MODEL_MAP;
  42 }
  43
  44 static const char* systemd_language_fallback_map(void) {
  45         const char* s;
  46
  47         s = getenv("SYSTEMD_LANGUAGE_FALLBACK_MAP");
  48         if (s)
  49                 return s;
  50
  51         return SYSTEMD_LANGUAGE_FALLBACK_MAP;
  52 }
  53
  54 static void context_free_x11(Context *c) {
  55         c->x11_layout = mfree(c->x11_layout);
  56         c->x11_options = mfree(c->x11_options);
  57         c->x11_model = mfree(c->x11_model);
  58         c->x11_variant = mfree(c->x11_variant);
  59 }
  60
  61 static void context_free_vconsole(Context *c) {
  62         c->vc_keymap = mfree(c->vc_keymap);
  63         c->vc_keymap_toggle = mfree(c->vc_keymap_toggle);
  64 }
  65
  66 static void context_free_locale(Context *c) {
  67         int p;
  68
  69         for (p = 0; p < _VARIABLE_LC_MAX; p++)
  70                 c->locale[p] = mfree(c->locale[p]);
  71 }
  72
  73 void context_clear(Context *c) {
  74         context_free_locale(c);
  75         context_free_x11(c);
  76         context_free_vconsole(c);
  77
  78         sd_bus_message_unref(c->locale_cache);
  79         sd_bus_message_unref(c->x11_cache);
  80         sd_bus_message_unref(c->vc_cache);
  81
  82         bus_verify_polkit_async_registry_free(c->polkit_registry);
  83 };
  84
  85 void locale_simplify(char *locale[_VARIABLE_LC_MAX]) {
  86         int p;
  87
  88         for (p = VARIABLE_LANG+1; p < _VARIABLE_LC_MAX; p++)
  89                 if (isempty(locale[p]) || streq_ptr(locale[VARIABLE_LANG], locale[p]))
  90                         locale[p] = mfree(locale[p]);
  91 }
  92
  93 int locale_read_data(Context *c, sd_bus_message *m) {
  94         struct stat st;
  95         int r;
  96
  97         /* Do not try to re-read the file within single bus operation. */
  98         if (m) {
  99                 if (m == c->locale_cache)
 100                         return 0;
 101
 102                 sd_bus_message_unref(c->locale_cache);
 103                 c->locale_cache = sd_bus_message_ref(m);
 104         }
 105
 106         r = stat("/etc/locale.conf", &st);
 107         if (r < 0 && errno != ENOENT)
 108                 return -errno;
 109
 110         if (r >= 0) {
 111                 usec_t t;
 112
 113                 /* If mtime is not changed, then we do not need to re-read the file. */
 114                 t = timespec_load(&st.st_mtim);
 115                 if (c->locale_mtime != USEC_INFINITY && t == c->locale_mtime)
 116                         return 0;
 117
 118                 c->locale_mtime = t;
 119                 context_free_locale(c);
 120
 121                 r = parse_env_file(NULL, "/etc/locale.conf",
 122                                    "LANG",              &c->locale[VARIABLE_LANG],
 123                                    "LANGUAGE",          &c->locale[VARIABLE_LANGUAGE],
 124                                    "LC_CTYPE",          &c->locale[VARIABLE_LC_CTYPE],
 125                                    "LC_NUMERIC",        &c->locale[VARIABLE_LC_NUMERIC],
 126                                    "LC_TIME",           &c->locale[VARIABLE_LC_TIME],
 127                                    "LC_COLLATE",        &c->locale[VARIABLE_LC_COLLATE],
 128                                    "LC_MONETARY",       &c->locale[VARIABLE_LC_MONETARY],
 129                                    "LC_MESSAGES",       &c->locale[VARIABLE_LC_MESSAGES],
 130                                    "LC_PAPER",          &c->locale[VARIABLE_LC_PAPER],
 131                                    "LC_NAME",           &c->locale[VARIABLE_LC_NAME],
 132                                    "LC_ADDRESS",        &c->locale[VARIABLE_LC_ADDRESS],
 133                                    "LC_TELEPHONE",      &c->locale[VARIABLE_LC_TELEPHONE],
 134                                    "LC_MEASUREMENT",    &c->locale[VARIABLE_LC_MEASUREMENT],
 135                                    "LC_IDENTIFICATION", &c->locale[VARIABLE_LC_IDENTIFICATION]);
 136                 if (r < 0)
 137                         return r;
 138         } else {
 139                 int p;
 140
 141                 c->locale_mtime = USEC_INFINITY;
 142                 context_free_locale(c);
 143
 144                 /* Fill in what we got passed from systemd. */
 145                 for (p = 0; p < _VARIABLE_LC_MAX; p++) {
 146                         const char *name;
 147
 148                         name = locale_variable_to_string(p);
 149                         assert(name);
 150
 151                         r = free_and_strdup(&c->locale[p], empty_to_null(getenv(name)));
 152                         if (r < 0)
 153                                 return r;
 154                 }
 155         }
 156
 157         locale_simplify(c->locale);
 158         return 0;
 159 }
 160
 161 int vconsole_read_data(Context *c, sd_bus_message *m) {
 162         struct stat st;
 163         usec_t t;
 164         int r;
 165
 166         /* Do not try to re-read the file within single bus operation. */
 167         if (m) {
 168                 if (m == c->vc_cache)
 169                         return 0;
 170
 171                 sd_bus_message_unref(c->vc_cache);
 172                 c->vc_cache = sd_bus_message_ref(m);
 173         }
 174
 175         if (stat("/etc/vconsole.conf", &st) < 0) {
 176                 if (errno != ENOENT)
 177                         return -errno;
 178
 179                 c->vc_mtime = USEC_INFINITY;
 180                 context_free_vconsole(c);
 181                 return 0;
 182         }
 183
 184         /* If mtime is not changed, then we do not need to re-read */
 185         t = timespec_load(&st.st_mtim);
 186         if (c->vc_mtime != USEC_INFINITY && t == c->vc_mtime)
 187                 return 0;
 188
 189         c->vc_mtime = t;
 190         context_free_vconsole(c);
 191
 192         r = parse_env_file(NULL, "/etc/vconsole.conf",
 193                            "KEYMAP",        &c->vc_keymap,
 194                            "KEYMAP_TOGGLE", &c->vc_keymap_toggle);
 195         if (r < 0)
 196                 return r;
 197
 198         return 0;
 199 }
 200
 201 int x11_read_data(Context *c, sd_bus_message *m) {
 202         _cleanup_fclose_ FILE *f = NULL;
 203         bool in_section = false;
 204         struct stat st;
 205         usec_t t;
 206         int r;
 207
 208         /* Do not try to re-read the file within single bus operation. */
 209         if (m) {
 210                 if (m == c->x11_cache)
 211                         return 0;
 212
 213                 sd_bus_message_unref(c->x11_cache);
 214                 c->x11_cache = sd_bus_message_ref(m);
 215         }
 216
 217         if (stat("/etc/X11/xorg.conf.d/00-keyboard.conf", &st) < 0) {
 218                 if (errno != ENOENT)
 219                         return -errno;
 220
 221                 c->x11_mtime = USEC_INFINITY;
 222                 context_free_x11(c);
 223                 return 0;
 224         }
 225
 226         /* If mtime is not changed, then we do not need to re-read */
 227         t = timespec_load(&st.st_mtim);
 228         if (c->x11_mtime != USEC_INFINITY && t == c->x11_mtime)
 229                 return 0;
 230
 231         c->x11_mtime = t;
 232         context_free_x11(c);
 233
 234         f = fopen("/etc/X11/xorg.conf.d/00-keyboard.conf", "re");
 235         if (!f)
 236                 return -errno;
 237
 238         for (;;) {
 239                 _cleanup_free_ char *line = NULL;
 240                 char *l;
 241
 242                 r = read_line(f, LONG_LINE_MAX, &line);
 243                 if (r < 0)
 244                         return r;
 245                 if (r == 0)
 246                         break;
 247
 248                 l = strstrip(line);
 249                 if (IN_SET(l[0], 0, '#'))
 250                         continue;
 251
 252                 if (in_section && first_word(l, "Option")) {
 253                         _cleanup_strv_free_ char **a = NULL;
 254
 255                         r = strv_split_extract(&a, l, WHITESPACE, EXTRACT_QUOTES);
 256                         if (r < 0)
 257                                 return r;
 258
 259                         if (strv_length(a) == 3) {
 260                                 char **p = NULL;
 261
 262                                 if (streq(a[1], "XkbLayout"))
 263                                         p = &c->x11_layout;
 264                                 else if (streq(a[1], "XkbModel"))
 265                                         p = &c->x11_model;
 266                                 else if (streq(a[1], "XkbVariant"))
 267                                         p = &c->x11_variant;
 268                                 else if (streq(a[1], "XkbOptions"))
 269                                         p = &c->x11_options;
 270
 271                                 if (p) {
 272                                         free_and_replace(*p, a[2]);
 273                                 }
 274                         }
 275
 276                 } else if (!in_section && first_word(l, "Section")) {
 277                         _cleanup_strv_free_ char **a = NULL;
 278
 279                         r = strv_split_extract(&a, l, WHITESPACE, EXTRACT_QUOTES);
 280                         if (r < 0)
 281                                 return -ENOMEM;
 282
 283                         if (strv_length(a) == 2 && streq(a[1], "InputClass"))
 284                                 in_section = true;
 285
 286                 } else if (in_section && first_word(l, "EndSection"))
 287                         in_section = false;
 288         }
 289
 290         return 0;
 291 }
 292
 293 int locale_write_data(Context *c, char ***settings) {
 294         _cleanup_strv_free_ char **l = NULL;
 295         struct stat st;
 296         int r, p;
 297
 298         /* Set values will be returned as strv in *settings on success. */
 299
 300         for (p = 0; p < _VARIABLE_LC_MAX; p++) {
 301                 _cleanup_free_ char *t = NULL;
 302                 char **u;
 303                 const char *name;
 304
 305                 name = locale_variable_to_string(p);
 306                 assert(name);
 307
 308                 if (isempty(c->locale[p]))
 309                         continue;
 310
 311                 if (asprintf(&t, "%s=%s", name, c->locale[p]) < 0)
 312                         return -ENOMEM;
 313
 314                 u = strv_env_set(l, t);
 315                 if (!u)
 316                         return -ENOMEM;
 317
 318                 strv_free_and_replace(l, u);
 319         }
 320
 321         if (strv_isempty(l)) {
 322                 if (unlink("/etc/locale.conf") < 0)
 323                         return errno == ENOENT ? 0 : -errno;
 324
 325                 c->locale_mtime = USEC_INFINITY;
 326                 return 0;
 327         }
 328
 329         r = write_env_file_label("/etc/locale.conf", l);
 330         if (r < 0)
 331                 return r;
 332
 333         *settings = TAKE_PTR(l);
 334
 335         if (stat("/etc/locale.conf", &st) >= 0)
 336                 c->locale_mtime = timespec_load(&st.st_mtim);
 337
 338         return 0;
 339 }
 340
 341 int vconsole_write_data(Context *c) {
 342         _cleanup_strv_free_ char **l = NULL;
 343         struct stat st;
 344         int r;
 345
 346         r = load_env_file(NULL, "/etc/vconsole.conf", &l);
 347         if (r < 0 && r != -ENOENT)
 348                 return r;
 349
 350         if (isempty(c->vc_keymap))
 351                 l = strv_env_unset(l, "KEYMAP");
 352         else {
 353                 _cleanup_free_ char *s = NULL;
 354                 char **u;
 355
 356                 s = strappend("KEYMAP=", c->vc_keymap);
 357                 if (!s)
 358                         return -ENOMEM;
 359
 360                 u = strv_env_set(l, s);
 361                 if (!u)
 362                         return -ENOMEM;
 363
 364                 strv_free_and_replace(l, u);
 365         }
 366
 367         if (isempty(c->vc_keymap_toggle))
 368                 l = strv_env_unset(l, "KEYMAP_TOGGLE");
 369         else  {
 370                 _cleanup_free_ char *s = NULL;
 371                 char **u;
 372
 373                 s = strappend("KEYMAP_TOGGLE=", c->vc_keymap_toggle);
 374                 if (!s)
 375                         return -ENOMEM;
 376
 377                 u = strv_env_set(l, s);
 378                 if (!u)
 379                         return -ENOMEM;
 380
 381                 strv_free_and_replace(l, u);
 382         }
 383
 384         if (strv_isempty(l)) {
 385                 if (unlink("/etc/vconsole.conf") < 0)
 386                         return errno == ENOENT ? 0 : -errno;
 387
 388                 c->vc_mtime = USEC_INFINITY;
 389                 return 0;
 390         }
 391
 392         r = write_env_file_label("/etc/vconsole.conf", l);
 393         if (r < 0)
 394                 return r;
 395
 396         if (stat("/etc/vconsole.conf", &st) >= 0)
 397                 c->vc_mtime = timespec_load(&st.st_mtim);
 398
 399         return 0;
 400 }
 401
 402 int x11_write_data(Context *c) {
 403         _cleanup_fclose_ FILE *f = NULL;
 404         _cleanup_free_ char *temp_path = NULL;
 405         struct stat st;
 406         int r;
 407
 408         if (isempty(c->x11_layout) &&
 409             isempty(c->x11_model) &&
 410             isempty(c->x11_variant) &&
 411             isempty(c->x11_options)) {
 412
 413                 if (unlink("/etc/X11/xorg.conf.d/00-keyboard.conf") < 0)
 414                         return errno == ENOENT ? 0 : -errno;
 415
 416                 c->vc_mtime = USEC_INFINITY;
 417                 return 0;
 418         }
 419
 420         mkdir_p_label("/etc/X11/xorg.conf.d", 0755);
 421
 422         r = fopen_temporary("/etc/X11/xorg.conf.d/00-keyboard.conf", &f, &temp_path);
 423         if (r < 0)
 424                 return r;
 425
 426         (void) __fsetlocking(f, FSETLOCKING_BYCALLER);
 427         (void) fchmod(fileno(f), 0644);
 428
 429         fputs("# Written by systemd-localed(8), read by systemd-localed and Xorg. It's\n"
 430               "# probably wise not to edit this file manually. Use localectl(1) to\n"
 431               "# instruct systemd-localed to update it.\n"
 432               "Section \"InputClass\"\n"
 433               "        Identifier \"system-keyboard\"\n"
 434               "        MatchIsKeyboard \"on\"\n", f);
 435
 436         if (!isempty(c->x11_layout))
 437                 fprintf(f, "        Option \"XkbLayout\" \"%s\"\n", c->x11_layout);
 438
 439         if (!isempty(c->x11_model))
 440                 fprintf(f, "        Option \"XkbModel\" \"%s\"\n", c->x11_model);
 441
 442         if (!isempty(c->x11_variant))
 443                 fprintf(f, "        Option \"XkbVariant\" \"%s\"\n", c->x11_variant);
 444
 445         if (!isempty(c->x11_options))
 446                 fprintf(f, "        Option \"XkbOptions\" \"%s\"\n", c->x11_options);
 447
 448         fputs("EndSection\n", f);
 449
 450         r = fflush_sync_and_check(f);
 451         if (r < 0)
 452                 goto fail;
 453
 454         if (rename(temp_path, "/etc/X11/xorg.conf.d/00-keyboard.conf") < 0) {
 455                 r = -errno;
 456                 goto fail;
 457         }
 458
 459         if (stat("/etc/X11/xorg.conf.d/00-keyboard.conf", &st) >= 0)
 460                 c->x11_mtime = timespec_load(&st.st_mtim);
 461
 462         return 0;
 463
 464 fail:
 465         if (temp_path)
 466                 (void) unlink(temp_path);
 467
 468         return r;
 469 }
 470
 471 static int read_next_mapping(const char* filename,
 472                              unsigned min_fields, unsigned max_fields,
 473                              FILE *f, unsigned *n, char ***a) {
 474         assert(f);
 475         assert(n);
 476         assert(a);
 477
 478         for (;;) {
 479                 _cleanup_free_ char *line = NULL;
 480                 size_t length;
 481                 char *l, **b;
 482                 int r;
 483
 484                 r = read_line(f, LONG_LINE_MAX, &line);
 485                 if (r < 0)
 486                         return r;
 487                 if (r == 0)
 488                         break;
 489
 490                 (*n)++;
 491
 492                 l = strstrip(line);
 493                 if (IN_SET(l[0], 0, '#'))
 494                         continue;
 495
 496                 r = strv_split_extract(&b, l, WHITESPACE, EXTRACT_QUOTES);
 497                 if (r < 0)
 498                         return r;
 499
 500                 length = strv_length(b);
 501                 if (length < min_fields || length > max_fields) {
 502                         log_error("Invalid line %s:%u, ignoring.", filename, *n);
 503                         strv_free(b);
 504                         continue;
 505
 506                 }
 507
 508                 *a = b;
 509                 return 1;
 510         }
 511
 512         return 0;
 513 }
 514
 515 int vconsole_convert_to_x11(Context *c) {
 516         const char *map;
 517         int modified = -1;
 518
 519         map = systemd_kbd_model_map();
 520
 521         if (isempty(c->vc_keymap)) {
 522                 modified =
 523                         !isempty(c->x11_layout) ||
 524                         !isempty(c->x11_model) ||
 525                         !isempty(c->x11_variant) ||
 526                         !isempty(c->x11_options);
 527
 528                 context_free_x11(c);
 529         } else {
 530                 _cleanup_fclose_ FILE *f = NULL;
 531                 unsigned n = 0;
 532
 533                 f = fopen(map, "re");
 534                 if (!f)
 535                         return -errno;
 536
 537                 for (;;) {
 538                         _cleanup_strv_free_ char **a = NULL;
 539                         int r;
 540
 541                         r = read_next_mapping(map, 5, UINT_MAX, f, &n, &a);
 542                         if (r < 0)
 543                                 return r;
 544                         if (r == 0)
 545                                 break;
 546
 547                         if (!streq(c->vc_keymap, a[0]))
 548                                 continue;
 549
 550                         if (!streq_ptr(c->x11_layout, strnulldash(a[1])) ||
 551                             !streq_ptr(c->x11_model, strnulldash(a[2])) ||
 552                             !streq_ptr(c->x11_variant, strnulldash(a[3])) ||
 553                             !streq_ptr(c->x11_options, strnulldash(a[4]))) {
 554
 555                                 if (free_and_strdup(&c->x11_layout, strnulldash(a[1])) < 0 ||
 556                                     free_and_strdup(&c->x11_model, strnulldash(a[2])) < 0 ||
 557                                     free_and_strdup(&c->x11_variant, strnulldash(a[3])) < 0 ||
 558                                     free_and_strdup(&c->x11_options, strnulldash(a[4])) < 0)
 559                                         return -ENOMEM;
 560
 561                                 modified = true;
 562                         }
 563
 564                         break;
 565                 }
 566         }
 567
 568         if (modified > 0)
 569                 log_info("Changing X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
 570                          strempty(c->x11_layout),
 571                          strempty(c->x11_model),
 572                          strempty(c->x11_variant),
 573                          strempty(c->x11_options));
 574         else if (modified < 0)
 575                 log_notice("X11 keyboard layout was not modified: no conversion found for \"%s\".",
 576                            c->vc_keymap);
 577         else
 578                 log_debug("X11 keyboard layout did not need to be modified.");
 579
 580         return modified > 0;
 581 }
 582
 583 int find_converted_keymap(const char *x11_layout, const char *x11_variant, char **new_keymap) {
 584         const char *dir;
 585         _cleanup_free_ char *n;
 586
 587         if (x11_variant)
 588                 n = strjoin(x11_layout, "-", x11_variant);
 589         else
 590                 n = strdup(x11_layout);
 591         if (!n)
 592                 return -ENOMEM;
 593
 594         NULSTR_FOREACH(dir, KBD_KEYMAP_DIRS) {
 595                 _cleanup_free_ char *p = NULL, *pz = NULL;
 596                 bool uncompressed;
 597
 598                 p = strjoin(dir, "xkb/", n, ".map");
 599                 pz = strjoin(dir, "xkb/", n, ".map.gz");
 600                 if (!p || !pz)
 601                         return -ENOMEM;
 602
 603                 uncompressed = access(p, F_OK) == 0;
 604                 if (uncompressed || access(pz, F_OK) == 0) {
 605                         log_debug("Found converted keymap %s at %s",
 606                                   n, uncompressed ? p : pz);
 607
 608                         *new_keymap = TAKE_PTR(n);
 609                         return 1;
 610                 }
 611         }
 612
 613         return 0;
 614 }
 615
 616 int find_legacy_keymap(Context *c, char **ret) {
 617         const char *map;
 618         _cleanup_fclose_ FILE *f = NULL;
 619         _cleanup_free_ char *new_keymap = NULL;
 620         unsigned n = 0;
 621         unsigned best_matching = 0;
 622         int r;
 623
 624         assert(!isempty(c->x11_layout));
 625
 626         map = systemd_kbd_model_map();
 627
 628         f = fopen(map, "re");
 629         if (!f)
 630                 return -errno;
 631
 632         for (;;) {
 633                 _cleanup_strv_free_ char **a = NULL;
 634                 unsigned matching = 0;
 635
 636                 r = read_next_mapping(map, 5, UINT_MAX, f, &n, &a);
 637                 if (r < 0)
 638                         return r;
 639                 if (r == 0)
 640                         break;
 641
 642                 /* Determine how well matching this entry is */
 643                 if (streq(c->x11_layout, a[1]))
 644                         /* If we got an exact match, this is best */
 645                         matching = 10;
 646                 else {
 647                         /* We have multiple X layouts, look for an
 648                          * entry that matches our key with everything
 649                          * but the first layout stripped off. */
 650                         if (startswith_comma(c->x11_layout, a[1]))
 651                                 matching = 5;
 652                         else  {
 653                                 char *x;
 654
 655                                 /* If that didn't work, strip off the
 656                                  * other layouts from the entry, too */
 657                                 x = strndupa(a[1], strcspn(a[1], ","));
 658                                 if (startswith_comma(c->x11_layout, x))
 659                                         matching = 1;
 660                         }
 661                 }
 662
 663                 if (matching > 0) {
 664                         if (isempty(c->x11_model) || streq_ptr(c->x11_model, a[2])) {
 665                                 matching++;
 666
 667                                 if (streq_ptr(c->x11_variant, a[3])) {
 668                                         matching++;
 669
 670                                         if (streq_ptr(c->x11_options, a[4]))
 671                                                 matching++;
 672                                 }
 673                         }
 674                 }
 675
 676                 /* The best matching entry so far, then let's save that */
 677                 if (matching >= MAX(best_matching, 1u)) {
 678                         log_debug("Found legacy keymap %s with score %u",
 679                                   a[0], matching);
 680
 681                         if (matching > best_matching) {
 682                                 best_matching = matching;
 683
 684                                 r = free_and_strdup(&new_keymap, a[0]);
 685                                 if (r < 0)
 686                                         return r;
 687                         }
 688                 }
 689         }
 690
 691         if (best_matching < 10 && c->x11_layout) {
 692                 /* The best match is only the first part of the X11
 693                  * keymap. Check if we have a converted map which
 694                  * matches just the first layout.
 695                  */
 696                 char *l, *v = NULL, *converted;
 697
 698                 l = strndupa(c->x11_layout, strcspn(c->x11_layout, ","));
 699                 if (c->x11_variant)
 700                         v = strndupa(c->x11_variant, strcspn(c->x11_variant, ","));
 701                 r = find_converted_keymap(l, v, &converted);
 702                 if (r < 0)
 703                         return r;
 704                 if (r > 0)
 705                         free_and_replace(new_keymap, converted);
 706         }
 707
 708         *ret = TAKE_PTR(new_keymap);
 709         return (bool) *ret;
 710 }
 711
 712 int find_language_fallback(const char *lang, char **language) {
 713         const char *map;
 714         _cleanup_fclose_ FILE *f = NULL;
 715         unsigned n = 0;
 716
 717         assert(lang);
 718         assert(language);
 719
 720         map = systemd_language_fallback_map();
 721
 722         f = fopen(map, "re");
 723         if (!f)
 724                 return -errno;
 725
 726         for (;;) {
 727                 _cleanup_strv_free_ char **a = NULL;
 728                 int r;
 729
 730                 r = read_next_mapping(map, 2, 2, f, &n, &a);
 731                 if (r <= 0)
 732                         return r;
 733
 734                 if (streq(lang, a[0])) {
 735                         assert(strv_length(a) == 2);
 736                         *language = TAKE_PTR(a[1]);
 737                         return 1;
 738                 }
 739         }
 740
 741         assert_not_reached("should not be here");
 742 }
 743
 744 int x11_convert_to_vconsole(Context *c) {
 745         bool modified = false;
 746
 747         if (isempty(c->x11_layout)) {
 748                 modified =
 749                         !isempty(c->vc_keymap) ||
 750                         !isempty(c->vc_keymap_toggle);
 751
 752                 context_free_vconsole(c);
 753         } else {
 754                 _cleanup_free_ char *new_keymap = NULL;
 755                 int r;
 756
 757                 r = find_converted_keymap(c->x11_layout, c->x11_variant, &new_keymap);
 758                 if (r < 0)
 759                         return r;
 760                 else if (r == 0) {
 761                         r = find_legacy_keymap(c, &new_keymap);
 762                         if (r < 0)
 763                                 return r;
 764                 }
 765                 if (r == 0)
 766                         /* We search for layout-variant match first, but then we also look
 767                          * for anything which matches just the layout. So it's accurate to say
 768                          * that we couldn't find anything which matches the layout. */
 769                         log_notice("No conversion to virtual console map found for \"%s\".",
 770                                    c->x11_layout);
 771
 772                 if (!streq_ptr(c->vc_keymap, new_keymap)) {
 773                         free_and_replace(c->vc_keymap, new_keymap);
 774                         c->vc_keymap_toggle = mfree(c->vc_keymap_toggle);
 775                         modified = true;
 776                 }
 777         }
 778
 779         if (modified)
 780                 log_info("Changing virtual console keymap to '%s' toggle '%s'",
 781                          strempty(c->vc_keymap), strempty(c->vc_keymap_toggle));
 782         else
 783                 log_debug("Virtual console keymap was not modified.");
 784
 785         return modified;
 786 }