src/firstboot/firstboot.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <fcntl.h>
   4 #include <getopt.h>
   5 #include <unistd.h>
   6
   7 #include "sd-id128.h"
   8
   9 #include "alloc-util.h"
  10 #include "ask-password-api.h"
  11 #include "copy.h"
  12 #include "env-file.h"
  13 #include "fd-util.h"
  14 #include "fileio.h"
  15 #include "fs-util.h"
  16 #include "hostname-util.h"
  17 #include "kbd-util.h"
  18 #include "libcrypt-util.h"
  19 #include "locale-util.h"
  20 #include "main-func.h"
  21 #include "memory-util.h"
  22 #include "mkdir.h"
  23 #include "os-util.h"
  24 #include "parse-util.h"
  25 #include "path-util.h"
  26 #include "pretty-print.h"
  27 #include "proc-cmdline.h"
  28 #include "random-util.h"
  29 #include "string-util.h"
  30 #include "strv.h"
  31 #include "terminal-util.h"
  32 #include "time-util.h"
  33 #include "tmpfile-util-label.h"
  34 #include "umask-util.h"
  35 #include "user-util.h"
  36
  37 static char *arg_root = NULL;
  38 static char *arg_locale = NULL;  /* $LANG */
  39 static char *arg_keymap = NULL;
  40 static char *arg_locale_messages = NULL; /* $LC_MESSAGES */
  41 static char *arg_timezone = NULL;
  42 static char *arg_hostname = NULL;
  43 static sd_id128_t arg_machine_id = {};
  44 static char *arg_root_password = NULL;
  45 static bool arg_prompt_locale = false;
  46 static bool arg_prompt_keymap = false;
  47 static bool arg_prompt_timezone = false;
  48 static bool arg_prompt_hostname = false;
  49 static bool arg_prompt_root_password = false;
  50 static bool arg_copy_locale = false;
  51 static bool arg_copy_keymap = false;
  52 static bool arg_copy_timezone = false;
  53 static bool arg_copy_root_password = false;
  54 static bool arg_force = false;
  55
  56 STATIC_DESTRUCTOR_REGISTER(arg_root, freep);
  57 STATIC_DESTRUCTOR_REGISTER(arg_locale, freep);
  58 STATIC_DESTRUCTOR_REGISTER(arg_locale_messages, freep);
  59 STATIC_DESTRUCTOR_REGISTER(arg_keymap, freep);
  60 STATIC_DESTRUCTOR_REGISTER(arg_timezone, freep);
  61 STATIC_DESTRUCTOR_REGISTER(arg_hostname, freep);
  62 STATIC_DESTRUCTOR_REGISTER(arg_root_password, erase_and_freep);
  63
  64 static bool press_any_key(void) {
  65         char k = 0;
  66         bool need_nl = true;
  67
  68         printf("-- Press any key to proceed --");
  69         fflush(stdout);
  70
  71         (void) read_one_char(stdin, &k, USEC_INFINITY, &need_nl);
  72
  73         if (need_nl)
  74                 putchar('\n');
  75
  76         return k != 'q';
  77 }
  78
  79 static void print_welcome(void) {
  80         _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
  81         static bool done = false;
  82         const char *pn;
  83         int r;
  84
  85         if (done)
  86                 return;
  87
  88         r = parse_os_release(
  89                         arg_root,
  90                         "PRETTY_NAME", &pretty_name,
  91                         "ANSI_COLOR", &ansi_color,
  92                         NULL);
  93         if (r < 0)
  94                 log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r,
  95                                "Failed to read os-release file, ignoring: %m");
  96
  97         pn = isempty(pretty_name) ? "Linux" : pretty_name;
  98
  99         if (colors_enabled())
 100                 printf("\nWelcome to your new installation of \x1B[%sm%s\x1B[0m!\n", ansi_color, pn);
 101         else
 102                 printf("\nWelcome to your new installation of %s!\n", pn);
 103
 104         printf("\nPlease configure your system!\n\n");
 105
 106         press_any_key();
 107
 108         done = true;
 109 }
 110
 111 static int show_menu(char **x, unsigned n_columns, unsigned width, unsigned percentage) {
 112         unsigned break_lines, break_modulo;
 113         size_t n, per_column, i, j;
 114
 115         assert(n_columns > 0);
 116
 117         n = strv_length(x);
 118         per_column = DIV_ROUND_UP(n, n_columns);
 119
 120         break_lines = lines();
 121         if (break_lines > 2)
 122                 break_lines--;
 123
 124         /* The first page gets two extra lines, since we want to show
 125          * a title */
 126         break_modulo = break_lines;
 127         if (break_modulo > 3)
 128                 break_modulo -= 3;
 129
 130         for (i = 0; i < per_column; i++) {
 131
 132                 for (j = 0; j < n_columns; j ++) {
 133                         _cleanup_free_ char *e = NULL;
 134
 135                         if (j * per_column + i >= n)
 136                                 break;
 137
 138                         e = ellipsize(x[j * per_column + i], width, percentage);
 139                         if (!e)
 140                                 return log_oom();
 141
 142                         printf("%4zu) %-*s", j * per_column + i + 1, width, e);
 143                 }
 144
 145                 putchar('\n');
 146
 147                 /* on the first screen we reserve 2 extra lines for the title */
 148                 if (i % break_lines == break_modulo) {
 149                         if (!press_any_key())
 150                                 return 0;
 151                 }
 152         }
 153
 154         return 0;
 155 }
 156
 157 static int prompt_loop(const char *text, char **l, unsigned percentage, bool (*is_valid)(const char *name), char **ret) {
 158         int r;
 159
 160         assert(text);
 161         assert(is_valid);
 162         assert(ret);
 163
 164         for (;;) {
 165                 _cleanup_free_ char *p = NULL;
 166                 unsigned u;
 167
 168                 r = ask_string(&p, "%s %s (empty to skip, \"list\" to list options): ",
 169                                special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), text);
 170                 if (r < 0)
 171                         return log_error_errno(r, "Failed to query user: %m");
 172
 173                 if (isempty(p)) {
 174                         log_warning("No data entered, skipping.");
 175                         return 0;
 176                 }
 177
 178                 if (streq(p, "list")) {
 179                         r = show_menu(l, 3, 22, percentage);
 180                         if (r < 0)
 181                                 return r;
 182
 183                         putchar('\n');
 184                         continue;
 185                 };
 186
 187                 r = safe_atou(p, &u);
 188                 if (r >= 0) {
 189                         if (u <= 0 || u > strv_length(l)) {
 190                                 log_error("Specified entry number out of range.");
 191                                 continue;
 192                         }
 193
 194                         log_info("Selected '%s'.", l[u-1]);
 195                         if (free_and_strdup(ret, l[u-1]) < 0)
 196                                 return log_oom();
 197
 198                         return 0;
 199                 }
 200
 201                 if (!is_valid(p)) {
 202                         log_error("Entered data invalid.");
 203                         continue;
 204                 }
 205
 206                 return free_and_replace(*ret, p);
 207         }
 208 }
 209
 210 static bool locale_is_ok(const char *name) {
 211
 212         if (arg_root)
 213                 return locale_is_valid(name);
 214
 215         return locale_is_installed(name) > 0;
 216 }
 217
 218 static int prompt_locale(void) {
 219         _cleanup_strv_free_ char **locales = NULL;
 220         int r;
 221
 222         if (arg_locale || arg_locale_messages)
 223                 return 0;
 224
 225         if (!arg_prompt_locale)
 226                 return 0;
 227
 228         r = get_locales(&locales);
 229         if (r < 0)
 230                 return log_error_errno(r, "Cannot query locales list: %m");
 231
 232         if (strv_isempty(locales))
 233                 log_debug("No locales found, skipping locale selection.");
 234         else if (strv_length(locales) == 1) {
 235
 236                 if (streq(locales[0], SYSTEMD_DEFAULT_LOCALE))
 237                         log_debug("Only installed locale is default locale anyway, not setting locale explicitly.");
 238                 else {
 239                         log_debug("Only a single locale available (%s), selecting it as default.", locales[0]);
 240
 241                         arg_locale = strdup(locales[0]);
 242                         if (!arg_locale)
 243                                 return log_oom();
 244
 245                         /* Not setting arg_locale_message here, since it defaults to LANG anyway */
 246                 }
 247         } else {
 248                 print_welcome();
 249
 250                 r = prompt_loop("Please enter system locale name or number",
 251                                 locales, 60, locale_is_ok, &arg_locale);
 252                 if (r < 0)
 253                         return r;
 254
 255                 if (isempty(arg_locale))
 256                         return 0;
 257
 258                 r = prompt_loop("Please enter system message locale name or number",
 259                                 locales, 60, locale_is_ok, &arg_locale_messages);
 260                 if (r < 0)
 261                         return r;
 262
 263                 /* Suppress the messages setting if it's the same as the main locale anyway */
 264                 if (streq_ptr(arg_locale, arg_locale_messages))
 265                         arg_locale_messages = mfree(arg_locale_messages);
 266         }
 267
 268         return 0;
 269 }
 270
 271 static int process_locale(void) {
 272         const char *etc_localeconf;
 273         char* locales[3];
 274         unsigned i = 0;
 275         int r;
 276
 277         etc_localeconf = prefix_roota(arg_root, "/etc/locale.conf");
 278         if (laccess(etc_localeconf, F_OK) >= 0 && !arg_force)
 279                 return 0;
 280
 281         if (arg_copy_locale && arg_root) {
 282
 283                 (void) mkdir_parents(etc_localeconf, 0755);
 284                 r = copy_file("/etc/locale.conf", etc_localeconf, 0, 0644, 0, 0, COPY_REFLINK);
 285                 if (r != -ENOENT) {
 286                         if (r < 0)
 287                                 return log_error_errno(r, "Failed to copy %s: %m", etc_localeconf);
 288
 289                         log_info("%s copied.", etc_localeconf);
 290                         return 0;
 291                 }
 292         }
 293
 294         r = prompt_locale();
 295         if (r < 0)
 296                 return r;
 297
 298         if (!isempty(arg_locale))
 299                 locales[i++] = strjoina("LANG=", arg_locale);
 300         if (!isempty(arg_locale_messages) && !streq(arg_locale_messages, arg_locale))
 301                 locales[i++] = strjoina("LC_MESSAGES=", arg_locale_messages);
 302
 303         if (i == 0)
 304                 return 0;
 305
 306         locales[i] = NULL;
 307
 308         (void) mkdir_parents(etc_localeconf, 0755);
 309         r = write_env_file(etc_localeconf, locales);
 310         if (r < 0)
 311                 return log_error_errno(r, "Failed to write %s: %m", etc_localeconf);
 312
 313         log_info("%s written.", etc_localeconf);
 314         return 0;
 315 }
 316
 317 static int prompt_keymap(void) {
 318         _cleanup_strv_free_ char **kmaps = NULL;
 319         int r;
 320
 321         if (arg_keymap)
 322                 return 0;
 323
 324         if (!arg_prompt_keymap)
 325                 return 0;
 326
 327         r = get_keymaps(&kmaps);
 328         if (r == -ENOENT) /* no keymaps installed */
 329                 return r;
 330         if (r < 0)
 331                 return log_error_errno(r, "Failed to read keymaps: %m");
 332
 333         print_welcome();
 334
 335         return prompt_loop("Please enter system keymap name or number",
 336                            kmaps, 60, keymap_is_valid, &arg_keymap);
 337 }
 338
 339 static int process_keymap(void) {
 340         const char *etc_vconsoleconf;
 341         char **keymap;
 342         int r;
 343
 344         etc_vconsoleconf = prefix_roota(arg_root, "/etc/vconsole.conf");
 345         if (laccess(etc_vconsoleconf, F_OK) >= 0 && !arg_force)
 346                 return 0;
 347
 348         if (arg_copy_keymap && arg_root) {
 349
 350                 (void) mkdir_parents(etc_vconsoleconf, 0755);
 351                 r = copy_file("/etc/vconsole.conf", etc_vconsoleconf, 0, 0644, 0, 0, COPY_REFLINK);
 352                 if (r != -ENOENT) {
 353                         if (r < 0)
 354                                 return log_error_errno(r, "Failed to copy %s: %m", etc_vconsoleconf);
 355
 356                         log_info("%s copied.", etc_vconsoleconf);
 357                         return 0;
 358                 }
 359         }
 360
 361         r = prompt_keymap();
 362         if (r == -ENOENT)
 363                 return 0; /* don't fail if no keymaps are installed */
 364         if (r < 0)
 365                 return r;
 366
 367         if (isempty(arg_keymap))
 368                 return 0;
 369
 370         keymap = STRV_MAKE(strjoina("KEYMAP=", arg_keymap));
 371
 372         r = mkdir_parents(etc_vconsoleconf, 0755);
 373         if (r < 0)
 374                 return log_error_errno(r, "Failed to create the parent directory of %s: %m", etc_vconsoleconf);
 375
 376         r = write_env_file(etc_vconsoleconf, keymap);
 377         if (r < 0)
 378                 return log_error_errno(r, "Failed to write %s: %m", etc_vconsoleconf);
 379
 380         log_info("%s written.", etc_vconsoleconf);
 381         return 0;
 382 }
 383
 384 static bool timezone_is_valid_log_error(const char *name) {
 385         return timezone_is_valid(name, LOG_ERR);
 386 }
 387
 388 static int prompt_timezone(void) {
 389         _cleanup_strv_free_ char **zones = NULL;
 390         int r;
 391
 392         if (arg_timezone)
 393                 return 0;
 394
 395         if (!arg_prompt_timezone)
 396                 return 0;
 397
 398         r = get_timezones(&zones);
 399         if (r < 0)
 400                 return log_error_errno(r, "Cannot query timezone list: %m");
 401
 402         print_welcome();
 403
 404         r = prompt_loop("Please enter timezone name or number",
 405                         zones, 30, timezone_is_valid_log_error, &arg_timezone);
 406         if (r < 0)
 407                 return r;
 408
 409         return 0;
 410 }
 411
 412 static int process_timezone(void) {
 413         const char *etc_localtime, *e;
 414         int r;
 415
 416         etc_localtime = prefix_roota(arg_root, "/etc/localtime");
 417         if (laccess(etc_localtime, F_OK) >= 0 && !arg_force)
 418                 return 0;
 419
 420         if (arg_copy_timezone && arg_root) {
 421                 _cleanup_free_ char *p = NULL;
 422
 423                 r = readlink_malloc("/etc/localtime", &p);
 424                 if (r != -ENOENT) {
 425                         if (r < 0)
 426                                 return log_error_errno(r, "Failed to read host timezone: %m");
 427
 428                         (void) mkdir_parents(etc_localtime, 0755);
 429                         if (symlink(p, etc_localtime) < 0)
 430                                 return log_error_errno(errno, "Failed to create %s symlink: %m", etc_localtime);
 431
 432                         log_info("%s copied.", etc_localtime);
 433                         return 0;
 434                 }
 435         }
 436
 437         r = prompt_timezone();
 438         if (r < 0)
 439                 return r;
 440
 441         if (isempty(arg_timezone))
 442                 return 0;
 443
 444         e = strjoina("../usr/share/zoneinfo/", arg_timezone);
 445
 446         (void) mkdir_parents(etc_localtime, 0755);
 447         if (symlink(e, etc_localtime) < 0)
 448                 return log_error_errno(errno, "Failed to create %s symlink: %m", etc_localtime);
 449
 450         log_info("%s written", etc_localtime);
 451         return 0;
 452 }
 453
 454 static int prompt_hostname(void) {
 455         int r;
 456
 457         if (arg_hostname)
 458                 return 0;
 459
 460         if (!arg_prompt_hostname)
 461                 return 0;
 462
 463         print_welcome();
 464         putchar('\n');
 465
 466         for (;;) {
 467                 _cleanup_free_ char *h = NULL;
 468
 469                 r = ask_string(&h, "%s Please enter hostname for new system (empty to skip): ", special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET));
 470                 if (r < 0)
 471                         return log_error_errno(r, "Failed to query hostname: %m");
 472
 473                 if (isempty(h)) {
 474                         log_warning("No hostname entered, skipping.");
 475                         break;
 476                 }
 477
 478                 if (!hostname_is_valid(h, true)) {
 479                         log_error("Specified hostname invalid.");
 480                         continue;
 481                 }
 482
 483                 /* Get rid of the trailing dot that we allow, but don't want to see */
 484                 arg_hostname = hostname_cleanup(h);
 485                 h = NULL;
 486                 break;
 487         }
 488
 489         return 0;
 490 }
 491
 492 static int process_hostname(void) {
 493         const char *etc_hostname;
 494         int r;
 495
 496         etc_hostname = prefix_roota(arg_root, "/etc/hostname");
 497         if (laccess(etc_hostname, F_OK) >= 0 && !arg_force)
 498                 return 0;
 499
 500         r = prompt_hostname();
 501         if (r < 0)
 502                 return r;
 503
 504         if (isempty(arg_hostname))
 505                 return 0;
 506
 507         r = write_string_file(etc_hostname, arg_hostname,
 508                               WRITE_STRING_FILE_CREATE | WRITE_STRING_FILE_SYNC | WRITE_STRING_FILE_MKDIR_0755 |
 509                               (arg_force ? WRITE_STRING_FILE_ATOMIC : 0));
 510         if (r < 0)
 511                 return log_error_errno(r, "Failed to write %s: %m", etc_hostname);
 512
 513         log_info("%s written.", etc_hostname);
 514         return 0;
 515 }
 516
 517 static int process_machine_id(void) {
 518         const char *etc_machine_id;
 519         char id[SD_ID128_STRING_MAX];
 520         int r;
 521
 522         etc_machine_id = prefix_roota(arg_root, "/etc/machine-id");
 523         if (laccess(etc_machine_id, F_OK) >= 0 && !arg_force)
 524                 return 0;
 525
 526         if (sd_id128_is_null(arg_machine_id))
 527                 return 0;
 528
 529         r = write_string_file(etc_machine_id, sd_id128_to_string(arg_machine_id, id),
 530                               WRITE_STRING_FILE_CREATE | WRITE_STRING_FILE_SYNC | WRITE_STRING_FILE_MKDIR_0755 |
 531                               (arg_force ? WRITE_STRING_FILE_ATOMIC : 0));
 532         if (r < 0)
 533                 return log_error_errno(r, "Failed to write machine id: %m");
 534
 535         log_info("%s written.", etc_machine_id);
 536         return 0;
 537 }
 538
 539 static int prompt_root_password(void) {
 540         const char *msg1, *msg2;
 541         int r;
 542
 543         if (arg_root_password)
 544                 return 0;
 545
 546         if (!arg_prompt_root_password)
 547                 return 0;
 548
 549         print_welcome();
 550         putchar('\n');
 551
 552         msg1 = strjoina(special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), " Please enter a new root password (empty to skip):");
 553         msg2 = strjoina(special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), " Please enter new root password again:");
 554
 555         for (;;) {
 556                 _cleanup_strv_free_erase_ char **a = NULL, **b = NULL;
 557
 558                 r = ask_password_tty(-1, msg1, NULL, 0, 0, NULL, &a);
 559                 if (r < 0)
 560                         return log_error_errno(r, "Failed to query root password: %m");
 561                 if (strv_length(a) != 1)
 562                         return log_error_errno(SYNTHETIC_ERRNO(EIO),
 563                                                "Received multiple passwords, where we expected one.");
 564
 565                 if (isempty(*a)) {
 566                         log_warning("No password entered, skipping.");
 567                         break;
 568                 }
 569
 570                 r = ask_password_tty(-1, msg2, NULL, 0, 0, NULL, &b);
 571                 if (r < 0)
 572                         return log_error_errno(r, "Failed to query root password: %m");
 573                 if (strv_length(b) != 1)
 574                         return log_error_errno(SYNTHETIC_ERRNO(EIO),
 575                                                "Received multiple passwords, where we expected one.");
 576
 577                 if (!streq(*a, *b)) {
 578                         log_error("Entered passwords did not match, please try again.");
 579                         continue;
 580                 }
 581
 582                 arg_root_password = TAKE_PTR(*a);
 583                 break;
 584         }
 585
 586         return 0;
 587 }
 588
 589 static int write_root_shadow(const char *shadow_path, const char *hashed_password) {
 590         _cleanup_fclose_ FILE *original = NULL, *shadow = NULL;
 591         _cleanup_(unlink_and_freep) char *shadow_tmp = NULL;
 592         int r;
 593
 594         r = fopen_temporary_label("/etc/shadow", shadow_path, &shadow, &shadow_tmp);
 595         if (r < 0)
 596                 return r;
 597
 598         original = fopen(shadow_path, "re");
 599         if (original) {
 600                 struct spwd *i;
 601
 602                 r = sync_rights(fileno(original), fileno(shadow));
 603                 if (r < 0)
 604                         return r;
 605
 606                 while ((r = fgetspent_sane(original, &i)) > 0) {
 607
 608                         if (streq(i->sp_namp, "root")) {
 609                                 i->sp_pwdp = (char *) hashed_password;
 610                                 i->sp_lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY);
 611                         }
 612
 613                         r = putspent_sane(i, shadow);
 614                         if (r < 0)
 615                                 return r;
 616                 }
 617                 if (r < 0)
 618                         return r;
 619
 620         } else {
 621                 struct spwd root = {
 622                         .sp_namp = (char*) "root",
 623                         .sp_pwdp = (char *) hashed_password,
 624                         .sp_lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY),
 625                         .sp_min = -1,
 626                         .sp_max = -1,
 627                         .sp_warn = -1,
 628                         .sp_inact = -1,
 629                         .sp_expire = -1,
 630                         .sp_flag = (unsigned long) -1, /* this appears to be what everybody does ... */
 631                 };
 632
 633                 if (errno != ENOENT)
 634                         return -errno;
 635
 636                 r = fchmod(fileno(shadow), 0000);
 637                 if (r < 0)
 638                         return -errno;
 639
 640                 r = putspent_sane(&root, shadow);
 641                 if (r < 0)
 642                         return r;
 643         }
 644
 645         r = fflush_sync_and_check(shadow);
 646         if (r < 0)
 647                 return r;
 648
 649         r = rename_and_apply_smack_floor_label(shadow_tmp, shadow_path);
 650         if (r < 0)
 651                 return r;
 652
 653         return 0;
 654 }
 655
 656 static int process_root_password(void) {
 657         _cleanup_free_ char *salt = NULL;
 658         _cleanup_close_ int lock = -1;
 659         struct crypt_data cd = {};
 660         const char *hashed_password;
 661         const char *etc_shadow;
 662         int r;
 663
 664         etc_shadow = prefix_roota(arg_root, "/etc/shadow");
 665         if (laccess(etc_shadow, F_OK) >= 0 && !arg_force)
 666                 return 0;
 667
 668         (void) mkdir_parents(etc_shadow, 0755);
 669
 670         lock = take_etc_passwd_lock(arg_root);
 671         if (lock < 0)
 672                 return log_error_errno(lock, "Failed to take a lock: %m");
 673
 674         if (arg_copy_root_password && arg_root) {
 675                 struct spwd *p;
 676
 677                 errno = 0;
 678                 p = getspnam("root");
 679                 if (p || errno != ENOENT) {
 680                         if (!p) {
 681                                 if (!errno)
 682                                         errno = EIO;
 683
 684                                 return log_error_errno(errno, "Failed to find shadow entry for root: %m");
 685                         }
 686
 687                         r = write_root_shadow(etc_shadow, p->sp_pwdp);
 688                         if (r < 0)
 689                                 return log_error_errno(r, "Failed to write %s: %m", etc_shadow);
 690
 691                         log_info("%s copied.", etc_shadow);
 692                         return 0;
 693                 }
 694         }
 695
 696         r = prompt_root_password();
 697         if (r < 0)
 698                 return r;
 699
 700         if (!arg_root_password)
 701                 return 0;
 702
 703         r = make_salt(&salt);
 704         if (r < 0)
 705                 return log_error_errno(r, "Failed to get salt: %m");
 706
 707         errno = 0;
 708         hashed_password = crypt_r(arg_root_password, salt, &cd);
 709         if (!hashed_password)
 710                 return log_error_errno(errno == 0 ? SYNTHETIC_ERRNO(EINVAL) : errno,
 711                                        "Failed to encrypt password: %m");
 712
 713         r = write_root_shadow(etc_shadow, hashed_password);
 714         if (r < 0)
 715                 return log_error_errno(r, "Failed to write %s: %m", etc_shadow);
 716
 717         log_info("%s written.", etc_shadow);
 718         return 0;
 719 }
 720
 721 static int help(void) {
 722         _cleanup_free_ char *link = NULL;
 723         int r;
 724
 725         r = terminal_urlify_man("systemd-firstboot", "1", &link);
 726         if (r < 0)
 727                 return log_oom();
 728
 729         printf("%s [OPTIONS...]\n\n"
 730                "Configures basic settings of the system.\n\n"
 731                "  -h --help                    Show this help\n"
 732                "     --version                 Show package version\n"
 733                "     --root=PATH               Operate on an alternate filesystem root\n"
 734                "     --locale=LOCALE           Set primary locale (LANG=)\n"
 735                "     --locale-messages=LOCALE  Set message locale (LC_MESSAGES=)\n"
 736                "     --keymap=KEYMAP           Set keymap\n"
 737                "     --timezone=TIMEZONE       Set timezone\n"
 738                "     --hostname=NAME           Set hostname\n"
 739                "     --machine-ID=ID           Set machine ID\n"
 740                "     --root-password=PASSWORD  Set root password\n"
 741                "     --root-password-file=FILE Set root password from file\n"
 742                "     --prompt-locale           Prompt the user for locale settings\n"
 743                "     --prompt-keymap           Prompt the user for keymap settings\n"
 744                "     --prompt-timezone         Prompt the user for timezone\n"
 745                "     --prompt-hostname         Prompt the user for hostname\n"
 746                "     --prompt-root-password    Prompt the user for root password\n"
 747                "     --prompt                  Prompt for all of the above\n"
 748                "     --copy-locale             Copy locale from host\n"
 749                "     --copy-keymap             Copy keymap from host\n"
 750                "     --copy-timezone           Copy timezone from host\n"
 751                "     --copy-root-password      Copy root password from host\n"
 752                "     --copy                    Copy locale, keymap, timezone, root password\n"
 753                "     --setup-machine-id        Generate a new random machine ID\n"
 754                "     --force                   Overwrite existing files\n"
 755                "\nSee the %s for details.\n"
 756                , program_invocation_short_name
 757                , link
 758         );
 759
 760         return 0;
 761 }
 762
 763 static int parse_argv(int argc, char *argv[]) {
 764
 765         enum {
 766                 ARG_VERSION = 0x100,
 767                 ARG_ROOT,
 768                 ARG_LOCALE,
 769                 ARG_LOCALE_MESSAGES,
 770                 ARG_KEYMAP,
 771                 ARG_TIMEZONE,
 772                 ARG_HOSTNAME,
 773                 ARG_MACHINE_ID,
 774                 ARG_ROOT_PASSWORD,
 775                 ARG_ROOT_PASSWORD_FILE,
 776                 ARG_PROMPT,
 777                 ARG_PROMPT_LOCALE,
 778                 ARG_PROMPT_KEYMAP,
 779                 ARG_PROMPT_TIMEZONE,
 780                 ARG_PROMPT_HOSTNAME,
 781                 ARG_PROMPT_ROOT_PASSWORD,
 782                 ARG_COPY,
 783                 ARG_COPY_LOCALE,
 784                 ARG_COPY_KEYMAP,
 785                 ARG_COPY_TIMEZONE,
 786                 ARG_COPY_ROOT_PASSWORD,
 787                 ARG_SETUP_MACHINE_ID,
 788                 ARG_FORCE,
 789         };
 790
 791         static const struct option options[] = {
 792                 { "help",                 no_argument,       NULL, 'h'                      },
 793                 { "version",              no_argument,       NULL, ARG_VERSION              },
 794                 { "root",                 required_argument, NULL, ARG_ROOT                 },
 795                 { "locale",               required_argument, NULL, ARG_LOCALE               },
 796                 { "locale-messages",      required_argument, NULL, ARG_LOCALE_MESSAGES      },
 797                 { "keymap",               required_argument, NULL, ARG_KEYMAP               },
 798                 { "timezone",             required_argument, NULL, ARG_TIMEZONE             },
 799                 { "hostname",             required_argument, NULL, ARG_HOSTNAME             },
 800                 { "machine-id",           required_argument, NULL, ARG_MACHINE_ID           },
 801                 { "root-password",        required_argument, NULL, ARG_ROOT_PASSWORD        },
 802                 { "root-password-file",   required_argument, NULL, ARG_ROOT_PASSWORD_FILE   },
 803                 { "prompt",               no_argument,       NULL, ARG_PROMPT               },
 804                 { "prompt-locale",        no_argument,       NULL, ARG_PROMPT_LOCALE        },
 805                 { "prompt-keymap",        no_argument,       NULL, ARG_PROMPT_KEYMAP        },
 806                 { "prompt-timezone",      no_argument,       NULL, ARG_PROMPT_TIMEZONE      },
 807                 { "prompt-hostname",      no_argument,       NULL, ARG_PROMPT_HOSTNAME      },
 808                 { "prompt-root-password", no_argument,       NULL, ARG_PROMPT_ROOT_PASSWORD },
 809                 { "copy",                 no_argument,       NULL, ARG_COPY                 },
 810                 { "copy-locale",          no_argument,       NULL, ARG_COPY_LOCALE          },
 811                 { "copy-keymap",          no_argument,       NULL, ARG_COPY_KEYMAP          },
 812                 { "copy-timezone",        no_argument,       NULL, ARG_COPY_TIMEZONE        },
 813                 { "copy-root-password",   no_argument,       NULL, ARG_COPY_ROOT_PASSWORD   },
 814                 { "setup-machine-id",     no_argument,       NULL, ARG_SETUP_MACHINE_ID     },
 815                 { "force",                no_argument,       NULL, ARG_FORCE                },
 816                 {}
 817         };
 818
 819         int r, c;
 820
 821         assert(argc >= 0);
 822         assert(argv);
 823
 824         while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
 825
 826                 switch (c) {
 827
 828                 case 'h':
 829                         return help();
 830
 831                 case ARG_VERSION:
 832                         return version();
 833
 834                 case ARG_ROOT:
 835                         r = parse_path_argument_and_warn(optarg, true, &arg_root);
 836                         if (r < 0)
 837                                 return r;
 838                         break;
 839
 840                 case ARG_LOCALE:
 841                         r = free_and_strdup(&arg_locale, optarg);
 842                         if (r < 0)
 843                                 return log_oom();
 844
 845                         break;
 846
 847                 case ARG_LOCALE_MESSAGES:
 848                         r = free_and_strdup(&arg_locale_messages, optarg);
 849                         if (r < 0)
 850                                 return log_oom();
 851
 852                         break;
 853
 854                 case ARG_KEYMAP:
 855                         if (!keymap_is_valid(optarg))
 856                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 857                                                        "Keymap %s is not valid.", optarg);
 858
 859                         r = free_and_strdup(&arg_keymap, optarg);
 860                         if (r < 0)
 861                                 return log_oom();
 862
 863                         break;
 864
 865                 case ARG_TIMEZONE:
 866                         if (!timezone_is_valid(optarg, LOG_ERR))
 867                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 868                                                        "Timezone %s is not valid.", optarg);
 869
 870                         r = free_and_strdup(&arg_timezone, optarg);
 871                         if (r < 0)
 872                                 return log_oom();
 873
 874                         break;
 875
 876                 case ARG_ROOT_PASSWORD:
 877                         r = free_and_strdup(&arg_root_password, optarg);
 878                         if (r < 0)
 879                                 return log_oom();
 880                         break;
 881
 882                 case ARG_ROOT_PASSWORD_FILE:
 883                         arg_root_password = mfree(arg_root_password);
 884
 885                         r = read_one_line_file(optarg, &arg_root_password);
 886                         if (r < 0)
 887                                 return log_error_errno(r, "Failed to read %s: %m", optarg);
 888
 889                         break;
 890
 891                 case ARG_HOSTNAME:
 892                         if (!hostname_is_valid(optarg, true))
 893                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 894                                                        "Host name %s is not valid.", optarg);
 895
 896                         hostname_cleanup(optarg);
 897                         r = free_and_strdup(&arg_hostname, optarg);
 898                         if (r < 0)
 899                                 return log_oom();
 900
 901                         break;
 902
 903                 case ARG_MACHINE_ID:
 904                         if (sd_id128_from_string(optarg, &arg_machine_id) < 0)
 905                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 906                                                        "Failed to parse machine id %s.", optarg);
 907
 908                         break;
 909
 910                 case ARG_PROMPT:
 911                         arg_prompt_locale = arg_prompt_keymap = arg_prompt_timezone = arg_prompt_hostname = arg_prompt_root_password = true;
 912                         break;
 913
 914                 case ARG_PROMPT_LOCALE:
 915                         arg_prompt_locale = true;
 916                         break;
 917
 918                 case ARG_PROMPT_KEYMAP:
 919                         arg_prompt_keymap = true;
 920                         break;
 921
 922                 case ARG_PROMPT_TIMEZONE:
 923                         arg_prompt_timezone = true;
 924                         break;
 925
 926                 case ARG_PROMPT_HOSTNAME:
 927                         arg_prompt_hostname = true;
 928                         break;
 929
 930                 case ARG_PROMPT_ROOT_PASSWORD:
 931                         arg_prompt_root_password = true;
 932                         break;
 933
 934                 case ARG_COPY:
 935                         arg_copy_locale = arg_copy_keymap = arg_copy_timezone = arg_copy_root_password = true;
 936                         break;
 937
 938                 case ARG_COPY_LOCALE:
 939                         arg_copy_locale = true;
 940                         break;
 941
 942                 case ARG_COPY_KEYMAP:
 943                         arg_copy_keymap = true;
 944                         break;
 945
 946                 case ARG_COPY_TIMEZONE:
 947                         arg_copy_timezone = true;
 948                         break;
 949
 950                 case ARG_COPY_ROOT_PASSWORD:
 951                         arg_copy_root_password = true;
 952                         break;
 953
 954                 case ARG_SETUP_MACHINE_ID:
 955
 956                         r = sd_id128_randomize(&arg_machine_id);
 957                         if (r < 0)
 958                                 return log_error_errno(r, "Failed to generate randomized machine ID: %m");
 959
 960                         break;
 961
 962                 case ARG_FORCE:
 963                         arg_force = true;
 964                         break;
 965
 966                 case '?':
 967                         return -EINVAL;
 968
 969                 default:
 970                         assert_not_reached("Unhandled option");
 971                 }
 972
 973         /* We check if the specified locale strings are valid down here, so that we can take --root= into
 974          * account when looking for the locale files. */
 975
 976         if (arg_locale && !locale_is_ok(arg_locale))
 977                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Locale %s is not installed.", arg_locale);
 978         if (arg_locale_messages && !locale_is_ok(arg_locale_messages))
 979                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Locale %s is not installed.", arg_locale_messages);
 980
 981         return 1;
 982 }
 983
 984 static int run(int argc, char *argv[]) {
 985         bool enabled;
 986         int r;
 987
 988         r = parse_argv(argc, argv);
 989         if (r <= 0)
 990                 return r;
 991
 992         log_setup_service();
 993
 994         umask(0022);
 995
 996         r = proc_cmdline_get_bool("systemd.firstboot", &enabled);
 997         if (r < 0)
 998                 return log_error_errno(r, "Failed to parse systemd.firstboot= kernel command line argument, ignoring: %m");
 999         if (r > 0 && !enabled)
1000                 return 0; /* disabled */
1001
1002         r = process_locale();
1003         if (r < 0)
1004                 return r;
1005
1006         r = process_keymap();
1007         if (r < 0)
1008                 return r;
1009
1010         r = process_timezone();
1011         if (r < 0)
1012                 return r;
1013
1014         r = process_hostname();
1015         if (r < 0)
1016                 return r;
1017
1018         r = process_machine_id();
1019         if (r < 0)
1020                 return r;
1021
1022         r = process_root_password();
1023         if (r < 0)
1024                 return r;
1025
1026         return 0;
1027 }
1028
1029 DEFINE_MAIN_FUNCTION(run);