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 #if HAVE_CRYPT_H
   8 /* libxcrypt is a replacement for glibc's libcrypt, and libcrypt might be
   9  * removed from glibc at some point. As part of the removal, defines for
  10  * crypt(3) are dropped from unistd.h, and we must include crypt.h instead.
  11  *
  12  * Newer versions of glibc (v2.0+) already ship crypt.h with a definition
  13  * of crypt(3) as well, so we simply include it if it is present.  MariaDB,
  14  * MySQL, PostgreSQL, Perl and some other wide-spread packages do it the
  15  * same way since ages without any problems.
  16  */
  17 #  include <crypt.h>
  18 #endif
  19
  20 #include "sd-id128.h"
  21
  22 #include "alloc-util.h"
  23 #include "ask-password-api.h"
  24 #include "copy.h"
  25 #include "env-file.h"
  26 #include "fd-util.h"
  27 #include "fileio.h"
  28 #include "fs-util.h"
  29 #include "hostname-util.h"
  30 #include "kbd-util.h"
  31 #include "locale-util.h"
  32 #include "main-func.h"
  33 #include "memory-util.h"
  34 #include "mkdir.h"
  35 #include "os-util.h"
  36 #include "parse-util.h"
  37 #include "path-util.h"
  38 #include "pretty-print.h"
  39 #include "proc-cmdline.h"
  40 #include "random-util.h"
  41 #include "string-util.h"
  42 #include "strv.h"
  43 #include "terminal-util.h"
  44 #include "time-util.h"
  45 #include "umask-util.h"
  46 #include "user-util.h"
  47
  48 static char *arg_root = NULL;
  49 static char *arg_locale = NULL;  /* $LANG */
  50 static char *arg_keymap = NULL;
  51 static char *arg_locale_messages = NULL; /* $LC_MESSAGES */
  52 static char *arg_timezone = NULL;
  53 static char *arg_hostname = NULL;
  54 static sd_id128_t arg_machine_id = {};
  55 static char *arg_root_password = NULL;
  56 static bool arg_prompt_locale = false;
  57 static bool arg_prompt_keymap = false;
  58 static bool arg_prompt_timezone = false;
  59 static bool arg_prompt_hostname = false;
  60 static bool arg_prompt_root_password = false;
  61 static bool arg_copy_locale = false;
  62 static bool arg_copy_keymap = false;
  63 static bool arg_copy_timezone = false;
  64 static bool arg_copy_root_password = false;
  65
  66 STATIC_DESTRUCTOR_REGISTER(arg_root, freep);
  67 STATIC_DESTRUCTOR_REGISTER(arg_locale, freep);
  68 STATIC_DESTRUCTOR_REGISTER(arg_locale_messages, freep);
  69 STATIC_DESTRUCTOR_REGISTER(arg_keymap, freep);
  70 STATIC_DESTRUCTOR_REGISTER(arg_timezone, freep);
  71 STATIC_DESTRUCTOR_REGISTER(arg_hostname, freep);
  72 STATIC_DESTRUCTOR_REGISTER(arg_root_password, erase_and_freep);
  73
  74 static bool press_any_key(void) {
  75         char k = 0;
  76         bool need_nl = true;
  77
  78         printf("-- Press any key to proceed --");
  79         fflush(stdout);
  80
  81         (void) read_one_char(stdin, &k, USEC_INFINITY, &need_nl);
  82
  83         if (need_nl)
  84                 putchar('\n');
  85
  86         return k != 'q';
  87 }
  88
  89 static void print_welcome(void) {
  90         _cleanup_free_ char *pretty_name = NULL;
  91         static bool done = false;
  92         int r;
  93
  94         if (done)
  95                 return;
  96
  97         r = parse_os_release(arg_root, "PRETTY_NAME", &pretty_name, NULL);
  98         if (r < 0)
  99                 log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r,
 100                                "Failed to read os-release file, ignoring: %m");
 101
 102         printf("\nWelcome to your new installation of %s!\nPlease configure a few basic system settings:\n\n",
 103                isempty(pretty_name) ? "Linux" : pretty_name);
 104
 105         press_any_key();
 106
 107         done = true;
 108 }
 109
 110 static int show_menu(char **x, unsigned n_columns, unsigned width, unsigned percentage) {
 111         unsigned break_lines, break_modulo;
 112         size_t n, per_column, i, j;
 113
 114         assert(n_columns > 0);
 115
 116         n = strv_length(x);
 117         per_column = DIV_ROUND_UP(n, n_columns);
 118
 119         break_lines = lines();
 120         if (break_lines > 2)
 121                 break_lines--;
 122
 123         /* The first page gets two extra lines, since we want to show
 124          * a title */
 125         break_modulo = break_lines;
 126         if (break_modulo > 3)
 127                 break_modulo -= 3;
 128
 129         for (i = 0; i < per_column; i++) {
 130
 131                 for (j = 0; j < n_columns; j ++) {
 132                         _cleanup_free_ char *e = NULL;
 133
 134                         if (j * per_column + i >= n)
 135                                 break;
 136
 137                         e = ellipsize(x[j * per_column + i], width, percentage);
 138                         if (!e)
 139                                 return log_oom();
 140
 141                         printf("%4zu) %-*s", j * per_column + i + 1, width, e);
 142                 }
 143
 144                 putchar('\n');
 145
 146                 /* on the first screen we reserve 2 extra lines for the title */
 147                 if (i % break_lines == break_modulo) {
 148                         if (!press_any_key())
 149                                 return 0;
 150                 }
 151         }
 152
 153         return 0;
 154 }
 155
 156 static int prompt_loop(const char *text, char **l, bool (*is_valid)(const char *name), char **ret) {
 157         int r;
 158
 159         assert(text);
 160         assert(is_valid);
 161         assert(ret);
 162
 163         for (;;) {
 164                 _cleanup_free_ char *p = NULL;
 165                 unsigned u;
 166
 167                 r = ask_string(&p, "%s %s (empty to skip): ", special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), text);
 168                 if (r < 0)
 169                         return log_error_errno(r, "Failed to query user: %m");
 170
 171                 if (isempty(p)) {
 172                         log_warning("No data entered, skipping.");
 173                         return 0;
 174                 }
 175
 176                 r = safe_atou(p, &u);
 177                 if (r >= 0) {
 178                         char *c;
 179
 180                         if (u <= 0 || u > strv_length(l)) {
 181                                 log_error("Specified entry number out of range.");
 182                                 continue;
 183                         }
 184
 185                         log_info("Selected '%s'.", l[u-1]);
 186
 187                         c = strdup(l[u-1]);
 188                         if (!c)
 189                                 return log_oom();
 190
 191                         free(*ret);
 192                         *ret = c;
 193                         return 0;
 194                 }
 195
 196                 if (!is_valid(p)) {
 197                         log_error("Entered data invalid.");
 198                         continue;
 199                 }
 200
 201                 free(*ret);
 202                 *ret = p;
 203                 p = 0;
 204                 return 0;
 205         }
 206 }
 207
 208 static int prompt_locale(void) {
 209         _cleanup_strv_free_ char **locales = NULL;
 210         int r;
 211
 212         if (arg_locale || arg_locale_messages)
 213                 return 0;
 214
 215         if (!arg_prompt_locale)
 216                 return 0;
 217
 218         r = get_locales(&locales);
 219         if (r < 0)
 220                 return log_error_errno(r, "Cannot query locales list: %m");
 221
 222         print_welcome();
 223
 224         printf("\nAvailable Locales:\n\n");
 225         r = show_menu(locales, 3, 22, 60);
 226         if (r < 0)
 227                 return r;
 228
 229         putchar('\n');
 230
 231         r = prompt_loop("Please enter system locale name or number", locales, locale_is_valid, &arg_locale);
 232         if (r < 0)
 233                 return r;
 234
 235         if (isempty(arg_locale))
 236                 return 0;
 237
 238         r = prompt_loop("Please enter system message locale name or number", locales, locale_is_valid, &arg_locale_messages);
 239         if (r < 0)
 240                 return r;
 241
 242         return 0;
 243 }
 244
 245 static int process_locale(void) {
 246         const char *etc_localeconf;
 247         char* locales[3];
 248         unsigned i = 0;
 249         int r;
 250
 251         etc_localeconf = prefix_roota(arg_root, "/etc/locale.conf");
 252         if (laccess(etc_localeconf, F_OK) >= 0)
 253                 return 0;
 254
 255         if (arg_copy_locale && arg_root) {
 256
 257                 (void) mkdir_parents(etc_localeconf, 0755);
 258                 r = copy_file("/etc/locale.conf", etc_localeconf, 0, 0644, 0, 0, COPY_REFLINK);
 259                 if (r != -ENOENT) {
 260                         if (r < 0)
 261                                 return log_error_errno(r, "Failed to copy %s: %m", etc_localeconf);
 262
 263                         log_info("%s copied.", etc_localeconf);
 264                         return 0;
 265                 }
 266         }
 267
 268         r = prompt_locale();
 269         if (r < 0)
 270                 return r;
 271
 272         if (!isempty(arg_locale))
 273                 locales[i++] = strjoina("LANG=", arg_locale);
 274         if (!isempty(arg_locale_messages) && !streq(arg_locale_messages, arg_locale))
 275                 locales[i++] = strjoina("LC_MESSAGES=", arg_locale_messages);
 276
 277         if (i == 0)
 278                 return 0;
 279
 280         locales[i] = NULL;
 281
 282         (void) mkdir_parents(etc_localeconf, 0755);
 283         r = write_env_file(etc_localeconf, locales);
 284         if (r < 0)
 285                 return log_error_errno(r, "Failed to write %s: %m", etc_localeconf);
 286
 287         log_info("%s written.", etc_localeconf);
 288         return 0;
 289 }
 290
 291 static int prompt_keymap(void) {
 292         _cleanup_strv_free_ char **kmaps = NULL;
 293         int r;
 294
 295         if (arg_keymap)
 296                 return 0;
 297
 298         if (!arg_prompt_keymap)
 299                 return 0;
 300
 301         r = get_keymaps(&kmaps);
 302         if (r == -ENOENT) /* no keymaps installed */
 303                 return r;
 304         if (r < 0)
 305                 return log_error_errno(r, "Failed to read keymaps: %m");
 306
 307         print_welcome();
 308
 309         printf("\nAvailable keymaps:\n\n");
 310         r = show_menu(kmaps, 3, 22, 60);
 311         if (r < 0)
 312                 return r;
 313
 314         putchar('\n');
 315
 316         return prompt_loop("Please enter system keymap name or number",
 317                            kmaps, keymap_is_valid, &arg_keymap);
 318 }
 319
 320 static int process_keymap(void) {
 321         const char *etc_vconsoleconf;
 322         char **keymap;
 323         int r;
 324
 325         etc_vconsoleconf = prefix_roota(arg_root, "/etc/vconsole.conf");
 326         if (laccess(etc_vconsoleconf, F_OK) >= 0)
 327                 return 0;
 328
 329         if (arg_copy_keymap && arg_root) {
 330
 331                 (void) mkdir_parents(etc_vconsoleconf, 0755);
 332                 r = copy_file("/etc/vconsole.conf", etc_vconsoleconf, 0, 0644, 0, 0, COPY_REFLINK);
 333                 if (r != -ENOENT) {
 334                         if (r < 0)
 335                                 return log_error_errno(r, "Failed to copy %s: %m", etc_vconsoleconf);
 336
 337                         log_info("%s copied.", etc_vconsoleconf);
 338                         return 0;
 339                 }
 340         }
 341
 342         r = prompt_keymap();
 343         if (r == -ENOENT)
 344                 return 0; /* don't fail if no keymaps are installed */
 345         if (r < 0)
 346                 return r;
 347
 348         if (isempty(arg_keymap))
 349                 return 0;
 350
 351         keymap = STRV_MAKE(strjoina("KEYMAP=", arg_keymap));
 352
 353         r = mkdir_parents(etc_vconsoleconf, 0755);
 354         if (r < 0)
 355                 return log_error_errno(r, "Failed to create the parent directory of %s: %m", etc_vconsoleconf);
 356
 357         r = write_env_file(etc_vconsoleconf, keymap);
 358         if (r < 0)
 359                 return log_error_errno(r, "Failed to write %s: %m", etc_vconsoleconf);
 360
 361         log_info("%s written.", etc_vconsoleconf);
 362         return 0;
 363 }
 364
 365 static bool timezone_is_valid_log_error(const char *name) {
 366         return timezone_is_valid(name, LOG_ERR);
 367 }
 368
 369 static int prompt_timezone(void) {
 370         _cleanup_strv_free_ char **zones = NULL;
 371         int r;
 372
 373         if (arg_timezone)
 374                 return 0;
 375
 376         if (!arg_prompt_timezone)
 377                 return 0;
 378
 379         r = get_timezones(&zones);
 380         if (r < 0)
 381                 return log_error_errno(r, "Cannot query timezone list: %m");
 382
 383         print_welcome();
 384
 385         printf("\nAvailable Time Zones:\n\n");
 386         r = show_menu(zones, 3, 22, 30);
 387         if (r < 0)
 388                 return r;
 389
 390         putchar('\n');
 391
 392         r = prompt_loop("Please enter timezone name or number", zones, timezone_is_valid_log_error, &arg_timezone);
 393         if (r < 0)
 394                 return r;
 395
 396         return 0;
 397 }
 398
 399 static int process_timezone(void) {
 400         const char *etc_localtime, *e;
 401         int r;
 402
 403         etc_localtime = prefix_roota(arg_root, "/etc/localtime");
 404         if (laccess(etc_localtime, F_OK) >= 0)
 405                 return 0;
 406
 407         if (arg_copy_timezone && arg_root) {
 408                 _cleanup_free_ char *p = NULL;
 409
 410                 r = readlink_malloc("/etc/localtime", &p);
 411                 if (r != -ENOENT) {
 412                         if (r < 0)
 413                                 return log_error_errno(r, "Failed to read host timezone: %m");
 414
 415                         (void) mkdir_parents(etc_localtime, 0755);
 416                         if (symlink(p, etc_localtime) < 0)
 417                                 return log_error_errno(errno, "Failed to create %s symlink: %m", etc_localtime);
 418
 419                         log_info("%s copied.", etc_localtime);
 420                         return 0;
 421                 }
 422         }
 423
 424         r = prompt_timezone();
 425         if (r < 0)
 426                 return r;
 427
 428         if (isempty(arg_timezone))
 429                 return 0;
 430
 431         e = strjoina("../usr/share/zoneinfo/", arg_timezone);
 432
 433         (void) mkdir_parents(etc_localtime, 0755);
 434         if (symlink(e, etc_localtime) < 0)
 435                 return log_error_errno(errno, "Failed to create %s symlink: %m", etc_localtime);
 436
 437         log_info("%s written", etc_localtime);
 438         return 0;
 439 }
 440
 441 static int prompt_hostname(void) {
 442         int r;
 443
 444         if (arg_hostname)
 445                 return 0;
 446
 447         if (!arg_prompt_hostname)
 448                 return 0;
 449
 450         print_welcome();
 451         putchar('\n');
 452
 453         for (;;) {
 454                 _cleanup_free_ char *h = NULL;
 455
 456                 r = ask_string(&h, "%s Please enter hostname for new system (empty to skip): ", special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET));
 457                 if (r < 0)
 458                         return log_error_errno(r, "Failed to query hostname: %m");
 459
 460                 if (isempty(h)) {
 461                         log_warning("No hostname entered, skipping.");
 462                         break;
 463                 }
 464
 465                 if (!hostname_is_valid(h, true)) {
 466                         log_error("Specified hostname invalid.");
 467                         continue;
 468                 }
 469
 470                 /* Get rid of the trailing dot that we allow, but don't want to see */
 471                 arg_hostname = hostname_cleanup(h);
 472                 h = NULL;
 473                 break;
 474         }
 475
 476         return 0;
 477 }
 478
 479 static int process_hostname(void) {
 480         const char *etc_hostname;
 481         int r;
 482
 483         etc_hostname = prefix_roota(arg_root, "/etc/hostname");
 484         if (laccess(etc_hostname, F_OK) >= 0)
 485                 return 0;
 486
 487         r = prompt_hostname();
 488         if (r < 0)
 489                 return r;
 490
 491         if (isempty(arg_hostname))
 492                 return 0;
 493
 494         r = write_string_file(etc_hostname, arg_hostname,
 495                               WRITE_STRING_FILE_CREATE | WRITE_STRING_FILE_SYNC | WRITE_STRING_FILE_MKDIR_0755);
 496         if (r < 0)
 497                 return log_error_errno(r, "Failed to write %s: %m", etc_hostname);
 498
 499         log_info("%s written.", etc_hostname);
 500         return 0;
 501 }
 502
 503 static int process_machine_id(void) {
 504         const char *etc_machine_id;
 505         char id[SD_ID128_STRING_MAX];
 506         int r;
 507
 508         etc_machine_id = prefix_roota(arg_root, "/etc/machine-id");
 509         if (laccess(etc_machine_id, F_OK) >= 0)
 510                 return 0;
 511
 512         if (sd_id128_is_null(arg_machine_id))
 513                 return 0;
 514
 515         r = write_string_file(etc_machine_id, sd_id128_to_string(arg_machine_id, id),
 516                               WRITE_STRING_FILE_CREATE | WRITE_STRING_FILE_SYNC | WRITE_STRING_FILE_MKDIR_0755);
 517         if (r < 0)
 518                 return log_error_errno(r, "Failed to write machine id: %m");
 519
 520         log_info("%s written.", etc_machine_id);
 521         return 0;
 522 }
 523
 524 static int prompt_root_password(void) {
 525         const char *msg1, *msg2, *etc_shadow;
 526         int r;
 527
 528         if (arg_root_password)
 529                 return 0;
 530
 531         if (!arg_prompt_root_password)
 532                 return 0;
 533
 534         etc_shadow = prefix_roota(arg_root, "/etc/shadow");
 535         if (laccess(etc_shadow, F_OK) >= 0)
 536                 return 0;
 537
 538         print_welcome();
 539         putchar('\n');
 540
 541         msg1 = strjoina(special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), " Please enter a new root password (empty to skip): ");
 542         msg2 = strjoina(special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), " Please enter new root password again: ");
 543
 544         for (;;) {
 545                 _cleanup_strv_free_erase_ char **a = NULL, **b = NULL;
 546
 547                 r = ask_password_tty(-1, msg1, NULL, 0, 0, NULL, &a);
 548                 if (r < 0)
 549                         return log_error_errno(r, "Failed to query root password: %m");
 550                 if (strv_length(a) != 1) {
 551                         log_warning("Received multiple passwords, where we expected one.");
 552                         return -EINVAL;
 553                 }
 554
 555                 if (isempty(*a)) {
 556                         log_warning("No password entered, skipping.");
 557                         break;
 558                 }
 559
 560                 r = ask_password_tty(-1, msg2, NULL, 0, 0, NULL, &b);
 561                 if (r < 0)
 562                         return log_error_errno(r, "Failed to query root password: %m");
 563
 564                 if (!streq(*a, *b)) {
 565                         log_error("Entered passwords did not match, please try again.");
 566                         continue;
 567                 }
 568
 569                 arg_root_password = TAKE_PTR(*a);
 570                 break;
 571         }
 572
 573         return 0;
 574 }
 575
 576 static int write_root_shadow(const char *path, const struct spwd *p) {
 577         _cleanup_fclose_ FILE *f = NULL;
 578         int r;
 579
 580         assert(path);
 581         assert(p);
 582
 583         RUN_WITH_UMASK(0777)
 584                 f = fopen(path, "wex");
 585         if (!f)
 586                 return -errno;
 587
 588         r = putspent_sane(p, f);
 589         if (r < 0)
 590                 return r;
 591
 592         return fflush_sync_and_check(f);
 593 }
 594
 595 static int process_root_password(void) {
 596
 597         struct spwd item = {
 598                 .sp_namp = (char*) "root",
 599                 .sp_min = -1,
 600                 .sp_max = -1,
 601                 .sp_warn = -1,
 602                 .sp_inact = -1,
 603                 .sp_expire = -1,
 604                 .sp_flag = (unsigned long) -1, /* this appears to be what everybody does ... */
 605         };
 606         _cleanup_free_ char *salt = NULL;
 607         _cleanup_close_ int lock = -1;
 608         struct crypt_data cd = {};
 609
 610         const char *etc_shadow;
 611         int r;
 612
 613         etc_shadow = prefix_roota(arg_root, "/etc/shadow");
 614         if (laccess(etc_shadow, F_OK) >= 0)
 615                 return 0;
 616
 617         (void) mkdir_parents(etc_shadow, 0755);
 618
 619         lock = take_etc_passwd_lock(arg_root);
 620         if (lock < 0)
 621                 return log_error_errno(lock, "Failed to take a lock: %m");
 622
 623         if (arg_copy_root_password && arg_root) {
 624                 struct spwd *p;
 625
 626                 errno = 0;
 627                 p = getspnam("root");
 628                 if (p || errno != ENOENT) {
 629                         if (!p) {
 630                                 if (!errno)
 631                                         errno = EIO;
 632
 633                                 return log_error_errno(errno, "Failed to find shadow entry for root: %m");
 634                         }
 635
 636                         r = write_root_shadow(etc_shadow, p);
 637                         if (r < 0)
 638                                 return log_error_errno(r, "Failed to write %s: %m", etc_shadow);
 639
 640                         log_info("%s copied.", etc_shadow);
 641                         return 0;
 642                 }
 643         }
 644
 645         r = prompt_root_password();
 646         if (r < 0)
 647                 return r;
 648
 649         if (!arg_root_password)
 650                 return 0;
 651
 652         r = make_salt(&salt);
 653         if (r < 0)
 654                 return log_error_errno(r, "Failed to get salt: %m");
 655
 656         errno = 0;
 657         item.sp_pwdp = crypt_r(arg_root_password, salt, &cd);
 658         if (!item.sp_pwdp)
 659                 return log_error_errno(errno == 0 ? SYNTHETIC_ERRNO(EINVAL) : errno,
 660                                        "Failed to encrypt password: %m");
 661
 662         item.sp_lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY);
 663
 664         r = write_root_shadow(etc_shadow, &item);
 665         if (r < 0)
 666                 return log_error_errno(r, "Failed to write %s: %m", etc_shadow);
 667
 668         log_info("%s written.", etc_shadow);
 669         return 0;
 670 }
 671
 672 static int help(void) {
 673         _cleanup_free_ char *link = NULL;
 674         int r;
 675
 676         r = terminal_urlify_man("systemd-firstboot", "1", &link);
 677         if (r < 0)
 678                 return log_oom();
 679
 680         printf("%s [OPTIONS...]\n\n"
 681                "Configures basic settings of the system.\n\n"
 682                "  -h --help                    Show this help\n"
 683                "     --version                 Show package version\n"
 684                "     --root=PATH               Operate on an alternate filesystem root\n"
 685                "     --locale=LOCALE           Set primary locale (LANG=)\n"
 686                "     --locale-messages=LOCALE  Set message locale (LC_MESSAGES=)\n"
 687                "     --keymap=KEYMAP           Set keymap\n"
 688                "     --timezone=TIMEZONE       Set timezone\n"
 689                "     --hostname=NAME           Set host name\n"
 690                "     --machine-ID=ID           Set machine ID\n"
 691                "     --root-password=PASSWORD  Set root password\n"
 692                "     --root-password-file=FILE Set root password from file\n"
 693                "     --prompt-locale           Prompt the user for locale settings\n"
 694                "     --prompt-keymap           Prompt the user for keymap settings\n"
 695                "     --prompt-timezone         Prompt the user for timezone\n"
 696                "     --prompt-hostname         Prompt the user for hostname\n"
 697                "     --prompt-root-password    Prompt the user for root password\n"
 698                "     --prompt                  Prompt for all of the above\n"
 699                "     --copy-locale             Copy locale from host\n"
 700                "     --copy-keymap             Copy keymap from host\n"
 701                "     --copy-timezone           Copy timezone from host\n"
 702                "     --copy-root-password      Copy root password from host\n"
 703                "     --copy                    Copy locale, keymap, timezone, root password\n"
 704                "     --setup-machine-id        Generate a new random machine ID\n"
 705                "\nSee the %s for details.\n"
 706                , program_invocation_short_name
 707                , link
 708         );
 709
 710         return 0;
 711 }
 712
 713 static int parse_argv(int argc, char *argv[]) {
 714
 715         enum {
 716                 ARG_VERSION = 0x100,
 717                 ARG_ROOT,
 718                 ARG_LOCALE,
 719                 ARG_LOCALE_MESSAGES,
 720                 ARG_KEYMAP,
 721                 ARG_TIMEZONE,
 722                 ARG_HOSTNAME,
 723                 ARG_MACHINE_ID,
 724                 ARG_ROOT_PASSWORD,
 725                 ARG_ROOT_PASSWORD_FILE,
 726                 ARG_PROMPT,
 727                 ARG_PROMPT_LOCALE,
 728                 ARG_PROMPT_KEYMAP,
 729                 ARG_PROMPT_TIMEZONE,
 730                 ARG_PROMPT_HOSTNAME,
 731                 ARG_PROMPT_ROOT_PASSWORD,
 732                 ARG_COPY,
 733                 ARG_COPY_LOCALE,
 734                 ARG_COPY_KEYMAP,
 735                 ARG_COPY_TIMEZONE,
 736                 ARG_COPY_ROOT_PASSWORD,
 737                 ARG_SETUP_MACHINE_ID,
 738         };
 739
 740         static const struct option options[] = {
 741                 { "help",                 no_argument,       NULL, 'h'                      },
 742                 { "version",              no_argument,       NULL, ARG_VERSION              },
 743                 { "root",                 required_argument, NULL, ARG_ROOT                 },
 744                 { "locale",               required_argument, NULL, ARG_LOCALE               },
 745                 { "locale-messages",      required_argument, NULL, ARG_LOCALE_MESSAGES      },
 746                 { "keymap",               required_argument, NULL, ARG_KEYMAP               },
 747                 { "timezone",             required_argument, NULL, ARG_TIMEZONE             },
 748                 { "hostname",             required_argument, NULL, ARG_HOSTNAME             },
 749                 { "machine-id",           required_argument, NULL, ARG_MACHINE_ID           },
 750                 { "root-password",        required_argument, NULL, ARG_ROOT_PASSWORD        },
 751                 { "root-password-file",   required_argument, NULL, ARG_ROOT_PASSWORD_FILE   },
 752                 { "prompt",               no_argument,       NULL, ARG_PROMPT               },
 753                 { "prompt-locale",        no_argument,       NULL, ARG_PROMPT_LOCALE        },
 754                 { "prompt-keymap",        no_argument,       NULL, ARG_PROMPT_KEYMAP        },
 755                 { "prompt-timezone",      no_argument,       NULL, ARG_PROMPT_TIMEZONE      },
 756                 { "prompt-hostname",      no_argument,       NULL, ARG_PROMPT_HOSTNAME      },
 757                 { "prompt-root-password", no_argument,       NULL, ARG_PROMPT_ROOT_PASSWORD },
 758                 { "copy",                 no_argument,       NULL, ARG_COPY                 },
 759                 { "copy-locale",          no_argument,       NULL, ARG_COPY_LOCALE          },
 760                 { "copy-keymap",          no_argument,       NULL, ARG_COPY_KEYMAP          },
 761                 { "copy-timezone",        no_argument,       NULL, ARG_COPY_TIMEZONE        },
 762                 { "copy-root-password",   no_argument,       NULL, ARG_COPY_ROOT_PASSWORD   },
 763                 { "setup-machine-id",     no_argument,       NULL, ARG_SETUP_MACHINE_ID     },
 764                 {}
 765         };
 766
 767         int r, c;
 768
 769         assert(argc >= 0);
 770         assert(argv);
 771
 772         while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
 773
 774                 switch (c) {
 775
 776                 case 'h':
 777                         return help();
 778
 779                 case ARG_VERSION:
 780                         return version();
 781
 782                 case ARG_ROOT:
 783                         r = parse_path_argument_and_warn(optarg, true, &arg_root);
 784                         if (r < 0)
 785                                 return r;
 786                         break;
 787
 788                 case ARG_LOCALE:
 789                         if (!locale_is_valid(optarg))
 790                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 791                                                        "Locale %s is not valid.", optarg);
 792
 793                         r = free_and_strdup(&arg_locale, optarg);
 794                         if (r < 0)
 795                                 return log_oom();
 796
 797                         break;
 798
 799                 case ARG_LOCALE_MESSAGES:
 800                         if (!locale_is_valid(optarg))
 801                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 802                                                        "Locale %s is not valid.", optarg);
 803
 804                         r = free_and_strdup(&arg_locale_messages, optarg);
 805                         if (r < 0)
 806                                 return log_oom();
 807
 808                         break;
 809
 810                 case ARG_KEYMAP:
 811                         if (!keymap_is_valid(optarg))
 812                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 813                                                        "Keymap %s is not valid.", optarg);
 814
 815                         r = free_and_strdup(&arg_keymap, optarg);
 816                         if (r < 0)
 817                                 return log_oom();
 818
 819                         break;
 820
 821                 case ARG_TIMEZONE:
 822                         if (!timezone_is_valid(optarg, LOG_ERR))
 823                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 824                                                        "Timezone %s is not valid.", optarg);
 825
 826                         r = free_and_strdup(&arg_timezone, optarg);
 827                         if (r < 0)
 828                                 return log_oom();
 829
 830                         break;
 831
 832                 case ARG_ROOT_PASSWORD:
 833                         r = free_and_strdup(&arg_root_password, optarg);
 834                         if (r < 0)
 835                                 return log_oom();
 836                         break;
 837
 838                 case ARG_ROOT_PASSWORD_FILE:
 839                         arg_root_password = mfree(arg_root_password);
 840
 841                         r = read_one_line_file(optarg, &arg_root_password);
 842                         if (r < 0)
 843                                 return log_error_errno(r, "Failed to read %s: %m", optarg);
 844
 845                         break;
 846
 847                 case ARG_HOSTNAME:
 848                         if (!hostname_is_valid(optarg, true))
 849                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 850                                                        "Host name %s is not valid.", optarg);
 851
 852                         hostname_cleanup(optarg);
 853                         r = free_and_strdup(&arg_hostname, optarg);
 854                         if (r < 0)
 855                                 return log_oom();
 856
 857                         break;
 858
 859                 case ARG_MACHINE_ID:
 860                         if (sd_id128_from_string(optarg, &arg_machine_id) < 0)
 861                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 862                                                        "Failed to parse machine id %s.", optarg);
 863
 864                         break;
 865
 866                 case ARG_PROMPT:
 867                         arg_prompt_locale = arg_prompt_keymap = arg_prompt_timezone = arg_prompt_hostname = arg_prompt_root_password = true;
 868                         break;
 869
 870                 case ARG_PROMPT_LOCALE:
 871                         arg_prompt_locale = true;
 872                         break;
 873
 874                 case ARG_PROMPT_KEYMAP:
 875                         arg_prompt_keymap = true;
 876                         break;
 877
 878                 case ARG_PROMPT_TIMEZONE:
 879                         arg_prompt_timezone = true;
 880                         break;
 881
 882                 case ARG_PROMPT_HOSTNAME:
 883                         arg_prompt_hostname = true;
 884                         break;
 885
 886                 case ARG_PROMPT_ROOT_PASSWORD:
 887                         arg_prompt_root_password = true;
 888                         break;
 889
 890                 case ARG_COPY:
 891                         arg_copy_locale = arg_copy_keymap = arg_copy_timezone = arg_copy_root_password = true;
 892                         break;
 893
 894                 case ARG_COPY_LOCALE:
 895                         arg_copy_locale = true;
 896                         break;
 897
 898                 case ARG_COPY_KEYMAP:
 899                         arg_copy_keymap = true;
 900                         break;
 901
 902                 case ARG_COPY_TIMEZONE:
 903                         arg_copy_timezone = true;
 904                         break;
 905
 906                 case ARG_COPY_ROOT_PASSWORD:
 907                         arg_copy_root_password = true;
 908                         break;
 909
 910                 case ARG_SETUP_MACHINE_ID:
 911
 912                         r = sd_id128_randomize(&arg_machine_id);
 913                         if (r < 0)
 914                                 return log_error_errno(r, "Failed to generate randomized machine ID: %m");
 915
 916                         break;
 917
 918                 case '?':
 919                         return -EINVAL;
 920
 921                 default:
 922                         assert_not_reached("Unhandled option");
 923                 }
 924
 925         return 1;
 926 }
 927
 928 static int run(int argc, char *argv[]) {
 929         bool enabled;
 930         int r;
 931
 932         r = parse_argv(argc, argv);
 933         if (r <= 0)
 934                 return r;
 935
 936         log_setup_service();
 937
 938         umask(0022);
 939
 940         r = proc_cmdline_get_bool("systemd.firstboot", &enabled);
 941         if (r < 0)
 942                 return log_error_errno(r, "Failed to parse systemd.firstboot= kernel command line argument, ignoring: %m");
 943         if (r > 0 && !enabled)
 944                 return 0; /* disabled */
 945
 946         r = process_locale();
 947         if (r < 0)
 948                 return r;
 949
 950         r = process_keymap();
 951         if (r < 0)
 952                 return r;
 953
 954         r = process_timezone();
 955         if (r < 0)
 956                 return r;
 957
 958         r = process_hostname();
 959         if (r < 0)
 960                 return r;
 961
 962         r = process_machine_id();
 963         if (r < 0)
 964                 return r;
 965
 966         r = process_root_password();
 967         if (r < 0)
 968                 return r;
 969
 970         return 0;
 971 }
 972
 973 DEFINE_MAIN_FUNCTION(run);