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 "umask-util.h"
  34 #include "user-util.h"
  35
  36 static char *arg_root = NULL;
  37 static char *arg_locale = NULL;  /* $LANG */
  38 static char *arg_keymap = NULL;
  39 static char *arg_locale_messages = NULL; /* $LC_MESSAGES */
  40 static char *arg_timezone = NULL;
  41 static char *arg_hostname = NULL;
  42 static sd_id128_t arg_machine_id = {};
  43 static char *arg_root_password = NULL;
  44 static bool arg_prompt_locale = false;
  45 static bool arg_prompt_keymap = false;
  46 static bool arg_prompt_timezone = false;
  47 static bool arg_prompt_hostname = false;
  48 static bool arg_prompt_root_password = false;
  49 static bool arg_copy_locale = false;
  50 static bool arg_copy_keymap = false;
  51 static bool arg_copy_timezone = false;
  52 static bool arg_copy_root_password = false;
  53
  54 STATIC_DESTRUCTOR_REGISTER(arg_root, freep);
  55 STATIC_DESTRUCTOR_REGISTER(arg_locale, freep);
  56 STATIC_DESTRUCTOR_REGISTER(arg_locale_messages, freep);
  57 STATIC_DESTRUCTOR_REGISTER(arg_keymap, freep);
  58 STATIC_DESTRUCTOR_REGISTER(arg_timezone, freep);
  59 STATIC_DESTRUCTOR_REGISTER(arg_hostname, freep);
  60 STATIC_DESTRUCTOR_REGISTER(arg_root_password, erase_and_freep);
  61
  62 static bool press_any_key(void) {
  63         char k = 0;
  64         bool need_nl = true;
  65
  66         printf("-- Press any key to proceed --");
  67         fflush(stdout);
  68
  69         (void) read_one_char(stdin, &k, USEC_INFINITY, &need_nl);
  70
  71         if (need_nl)
  72                 putchar('\n');
  73
  74         return k != 'q';
  75 }
  76
  77 static void print_welcome(void) {
  78         _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
  79         static bool done = false;
  80         const char *pn;
  81         int r;
  82
  83         if (done)
  84                 return;
  85
  86         r = parse_os_release(
  87                         arg_root,
  88                         "PRETTY_NAME", &pretty_name,
  89                         "ANSI_COLOR", &ansi_color,
  90                         NULL);
  91         if (r < 0)
  92                 log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r,
  93                                "Failed to read os-release file, ignoring: %m");
  94
  95         pn = isempty(pretty_name) ? "Linux" : pretty_name;
  96
  97         if (colors_enabled())
  98                 printf("\nWelcome to your new installation of \x1B[%sm%s\x1B[0m!\n", ansi_color, pn);
  99         else
 100                 printf("\nWelcome to your new installation of %s!\n", pn);
 101
 102         printf("\nPlease configure your system!\n\n");
 103
 104         press_any_key();
 105
 106         done = true;
 107 }
 108
 109 static int show_menu(char **x, unsigned n_columns, unsigned width, unsigned percentage) {
 110         unsigned break_lines, break_modulo;
 111         size_t n, per_column, i, j;
 112
 113         assert(n_columns > 0);
 114
 115         n = strv_length(x);
 116         per_column = DIV_ROUND_UP(n, n_columns);
 117
 118         break_lines = lines();
 119         if (break_lines > 2)
 120                 break_lines--;
 121
 122         /* The first page gets two extra lines, since we want to show
 123          * a title */
 124         break_modulo = break_lines;
 125         if (break_modulo > 3)
 126                 break_modulo -= 3;
 127
 128         for (i = 0; i < per_column; i++) {
 129
 130                 for (j = 0; j < n_columns; j ++) {
 131                         _cleanup_free_ char *e = NULL;
 132
 133                         if (j * per_column + i >= n)
 134                                 break;
 135
 136                         e = ellipsize(x[j * per_column + i], width, percentage);
 137                         if (!e)
 138                                 return log_oom();
 139
 140                         printf("%4zu) %-*s", j * per_column + i + 1, width, e);
 141                 }
 142
 143                 putchar('\n');
 144
 145                 /* on the first screen we reserve 2 extra lines for the title */
 146                 if (i % break_lines == break_modulo) {
 147                         if (!press_any_key())
 148                                 return 0;
 149                 }
 150         }
 151
 152         return 0;
 153 }
 154
 155 static int prompt_loop(const char *text, char **l, unsigned percentage, bool (*is_valid)(const char *name), char **ret) {
 156         int r;
 157
 158         assert(text);
 159         assert(is_valid);
 160         assert(ret);
 161
 162         for (;;) {
 163                 _cleanup_free_ char *p = NULL;
 164                 unsigned u;
 165
 166                 r = ask_string(&p, "%s %s (empty to skip, \"list\" to list options): ",
 167                                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                 if (streq(p, "list")) {
 177                         r = show_menu(l, 3, 22, percentage);
 178                         if (r < 0)
 179                                 return r;
 180
 181                         putchar('\n');
 182                         continue;
 183                 };
 184
 185                 r = safe_atou(p, &u);
 186                 if (r >= 0) {
 187                         if (u <= 0 || u > strv_length(l)) {
 188                                 log_error("Specified entry number out of range.");
 189                                 continue;
 190                         }
 191
 192                         log_info("Selected '%s'.", l[u-1]);
 193                         if (free_and_strdup(ret, l[u-1]) < 0)
 194                                 return log_oom();
 195
 196                         return 0;
 197                 }
 198
 199                 if (!is_valid(p)) {
 200                         log_error("Entered data invalid.");
 201                         continue;
 202                 }
 203
 204                 return free_and_replace(*ret, p);
 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         if (strv_isempty(locales))
 223                 log_debug("No locales found, skipping locale selection.");
 224         else if (strv_length(locales) == 1) {
 225
 226                 if (streq(locales[0], SYSTEMD_DEFAULT_LOCALE))
 227                         log_debug("Only installed locale is default locale anyway, not setting locale explicitly.");
 228                 else {
 229                         log_debug("Only a single locale available (%s), selecting it as default.", locales[0]);
 230
 231                         arg_locale = strdup(locales[0]);
 232                         if (!arg_locale)
 233                                 return log_oom();
 234
 235                         /* Not setting arg_locale_message here, since it defaults to LANG anyway */
 236                 }
 237         } else {
 238                 print_welcome();
 239
 240                 r = prompt_loop("Please enter system locale name or number",
 241                                 locales, 60, locale_is_valid, &arg_locale);
 242                 if (r < 0)
 243                         return r;
 244
 245                 if (isempty(arg_locale))
 246                         return 0;
 247
 248                 r = prompt_loop("Please enter system message locale name or number",
 249                                 locales, 60, locale_is_valid, &arg_locale_messages);
 250                 if (r < 0)
 251                         return r;
 252
 253                 /* Suppress the messages setting if it's the same as the main locale anyway */
 254                 if (streq_ptr(arg_locale, arg_locale_messages))
 255                         arg_locale_messages = mfree(arg_locale_messages);
 256         }
 257
 258         return 0;
 259 }
 260
 261 static int process_locale(void) {
 262         const char *etc_localeconf;
 263         char* locales[3];
 264         unsigned i = 0;
 265         int r;
 266
 267         etc_localeconf = prefix_roota(arg_root, "/etc/locale.conf");
 268         if (laccess(etc_localeconf, F_OK) >= 0)
 269                 return 0;
 270
 271         if (arg_copy_locale && arg_root) {
 272
 273                 (void) mkdir_parents(etc_localeconf, 0755);
 274                 r = copy_file("/etc/locale.conf", etc_localeconf, 0, 0644, 0, 0, COPY_REFLINK);
 275                 if (r != -ENOENT) {
 276                         if (r < 0)
 277                                 return log_error_errno(r, "Failed to copy %s: %m", etc_localeconf);
 278
 279                         log_info("%s copied.", etc_localeconf);
 280                         return 0;
 281                 }
 282         }
 283
 284         r = prompt_locale();
 285         if (r < 0)
 286                 return r;
 287
 288         if (!isempty(arg_locale))
 289                 locales[i++] = strjoina("LANG=", arg_locale);
 290         if (!isempty(arg_locale_messages) && !streq(arg_locale_messages, arg_locale))
 291                 locales[i++] = strjoina("LC_MESSAGES=", arg_locale_messages);
 292
 293         if (i == 0)
 294                 return 0;
 295
 296         locales[i] = NULL;
 297
 298         (void) mkdir_parents(etc_localeconf, 0755);
 299         r = write_env_file(etc_localeconf, locales);
 300         if (r < 0)
 301                 return log_error_errno(r, "Failed to write %s: %m", etc_localeconf);
 302
 303         log_info("%s written.", etc_localeconf);
 304         return 0;
 305 }
 306
 307 static int prompt_keymap(void) {
 308         _cleanup_strv_free_ char **kmaps = NULL;
 309         int r;
 310
 311         if (arg_keymap)
 312                 return 0;
 313
 314         if (!arg_prompt_keymap)
 315                 return 0;
 316
 317         r = get_keymaps(&kmaps);
 318         if (r == -ENOENT) /* no keymaps installed */
 319                 return r;
 320         if (r < 0)
 321                 return log_error_errno(r, "Failed to read keymaps: %m");
 322
 323         print_welcome();
 324
 325         return prompt_loop("Please enter system keymap name or number",
 326                            kmaps, 60, keymap_is_valid, &arg_keymap);
 327 }
 328
 329 static int process_keymap(void) {
 330         const char *etc_vconsoleconf;
 331         char **keymap;
 332         int r;
 333
 334         etc_vconsoleconf = prefix_roota(arg_root, "/etc/vconsole.conf");
 335         if (laccess(etc_vconsoleconf, F_OK) >= 0)
 336                 return 0;
 337
 338         if (arg_copy_keymap && arg_root) {
 339
 340                 (void) mkdir_parents(etc_vconsoleconf, 0755);
 341                 r = copy_file("/etc/vconsole.conf", etc_vconsoleconf, 0, 0644, 0, 0, COPY_REFLINK);
 342                 if (r != -ENOENT) {
 343                         if (r < 0)
 344                                 return log_error_errno(r, "Failed to copy %s: %m", etc_vconsoleconf);
 345
 346                         log_info("%s copied.", etc_vconsoleconf);
 347                         return 0;
 348                 }
 349         }
 350
 351         r = prompt_keymap();
 352         if (r == -ENOENT)
 353                 return 0; /* don't fail if no keymaps are installed */
 354         if (r < 0)
 355                 return r;
 356
 357         if (isempty(arg_keymap))
 358                 return 0;
 359
 360         keymap = STRV_MAKE(strjoina("KEYMAP=", arg_keymap));
 361
 362         r = mkdir_parents(etc_vconsoleconf, 0755);
 363         if (r < 0)
 364                 return log_error_errno(r, "Failed to create the parent directory of %s: %m", etc_vconsoleconf);
 365
 366         r = write_env_file(etc_vconsoleconf, keymap);
 367         if (r < 0)
 368                 return log_error_errno(r, "Failed to write %s: %m", etc_vconsoleconf);
 369
 370         log_info("%s written.", etc_vconsoleconf);
 371         return 0;
 372 }
 373
 374 static bool timezone_is_valid_log_error(const char *name) {
 375         return timezone_is_valid(name, LOG_ERR);
 376 }
 377
 378 static int prompt_timezone(void) {
 379         _cleanup_strv_free_ char **zones = NULL;
 380         int r;
 381
 382         if (arg_timezone)
 383                 return 0;
 384
 385         if (!arg_prompt_timezone)
 386                 return 0;
 387
 388         r = get_timezones(&zones);
 389         if (r < 0)
 390                 return log_error_errno(r, "Cannot query timezone list: %m");
 391
 392         print_welcome();
 393
 394         r = prompt_loop("Please enter timezone name or number",
 395                         zones, 30, timezone_is_valid_log_error, &arg_timezone);
 396         if (r < 0)
 397                 return r;
 398
 399         return 0;
 400 }
 401
 402 static int process_timezone(void) {
 403         const char *etc_localtime, *e;
 404         int r;
 405
 406         etc_localtime = prefix_roota(arg_root, "/etc/localtime");
 407         if (laccess(etc_localtime, F_OK) >= 0)
 408                 return 0;
 409
 410         if (arg_copy_timezone && arg_root) {
 411                 _cleanup_free_ char *p = NULL;
 412
 413                 r = readlink_malloc("/etc/localtime", &p);
 414                 if (r != -ENOENT) {
 415                         if (r < 0)
 416                                 return log_error_errno(r, "Failed to read host timezone: %m");
 417
 418                         (void) mkdir_parents(etc_localtime, 0755);
 419                         if (symlink(p, etc_localtime) < 0)
 420                                 return log_error_errno(errno, "Failed to create %s symlink: %m", etc_localtime);
 421
 422                         log_info("%s copied.", etc_localtime);
 423                         return 0;
 424                 }
 425         }
 426
 427         r = prompt_timezone();
 428         if (r < 0)
 429                 return r;
 430
 431         if (isempty(arg_timezone))
 432                 return 0;
 433
 434         e = strjoina("../usr/share/zoneinfo/", arg_timezone);
 435
 436         (void) mkdir_parents(etc_localtime, 0755);
 437         if (symlink(e, etc_localtime) < 0)
 438                 return log_error_errno(errno, "Failed to create %s symlink: %m", etc_localtime);
 439
 440         log_info("%s written", etc_localtime);
 441         return 0;
 442 }
 443
 444 static int prompt_hostname(void) {
 445         int r;
 446
 447         if (arg_hostname)
 448                 return 0;
 449
 450         if (!arg_prompt_hostname)
 451                 return 0;
 452
 453         print_welcome();
 454         putchar('\n');
 455
 456         for (;;) {
 457                 _cleanup_free_ char *h = NULL;
 458
 459                 r = ask_string(&h, "%s Please enter hostname for new system (empty to skip): ", special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET));
 460                 if (r < 0)
 461                         return log_error_errno(r, "Failed to query hostname: %m");
 462
 463                 if (isempty(h)) {
 464                         log_warning("No hostname entered, skipping.");
 465                         break;
 466                 }
 467
 468                 if (!hostname_is_valid(h, true)) {
 469                         log_error("Specified hostname invalid.");
 470                         continue;
 471                 }
 472
 473                 /* Get rid of the trailing dot that we allow, but don't want to see */
 474                 arg_hostname = hostname_cleanup(h);
 475                 h = NULL;
 476                 break;
 477         }
 478
 479         return 0;
 480 }
 481
 482 static int process_hostname(void) {
 483         const char *etc_hostname;
 484         int r;
 485
 486         etc_hostname = prefix_roota(arg_root, "/etc/hostname");
 487         if (laccess(etc_hostname, F_OK) >= 0)
 488                 return 0;
 489
 490         r = prompt_hostname();
 491         if (r < 0)
 492                 return r;
 493
 494         if (isempty(arg_hostname))
 495                 return 0;
 496
 497         r = write_string_file(etc_hostname, arg_hostname,
 498                               WRITE_STRING_FILE_CREATE | WRITE_STRING_FILE_SYNC | WRITE_STRING_FILE_MKDIR_0755);
 499         if (r < 0)
 500                 return log_error_errno(r, "Failed to write %s: %m", etc_hostname);
 501
 502         log_info("%s written.", etc_hostname);
 503         return 0;
 504 }
 505
 506 static int process_machine_id(void) {
 507         const char *etc_machine_id;
 508         char id[SD_ID128_STRING_MAX];
 509         int r;
 510
 511         etc_machine_id = prefix_roota(arg_root, "/etc/machine-id");
 512         if (laccess(etc_machine_id, F_OK) >= 0)
 513                 return 0;
 514
 515         if (sd_id128_is_null(arg_machine_id))
 516                 return 0;
 517
 518         r = write_string_file(etc_machine_id, sd_id128_to_string(arg_machine_id, id),
 519                               WRITE_STRING_FILE_CREATE | WRITE_STRING_FILE_SYNC | WRITE_STRING_FILE_MKDIR_0755);
 520         if (r < 0)
 521                 return log_error_errno(r, "Failed to write machine id: %m");
 522
 523         log_info("%s written.", etc_machine_id);
 524         return 0;
 525 }
 526
 527 static int prompt_root_password(void) {
 528         const char *msg1, *msg2, *etc_shadow;
 529         int r;
 530
 531         if (arg_root_password)
 532                 return 0;
 533
 534         if (!arg_prompt_root_password)
 535                 return 0;
 536
 537         etc_shadow = prefix_roota(arg_root, "/etc/shadow");
 538         if (laccess(etc_shadow, F_OK) >= 0)
 539                 return 0;
 540
 541         print_welcome();
 542         putchar('\n');
 543
 544         msg1 = strjoina(special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), " Please enter a new root password (empty to skip):");
 545         msg2 = strjoina(special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), " Please enter new root password again:");
 546
 547         for (;;) {
 548                 _cleanup_strv_free_erase_ char **a = NULL, **b = NULL;
 549
 550                 r = ask_password_tty(-1, msg1, NULL, 0, 0, NULL, &a);
 551                 if (r < 0)
 552                         return log_error_errno(r, "Failed to query root password: %m");
 553                 if (strv_length(a) != 1) {
 554                         log_warning("Received multiple passwords, where we expected one.");
 555                         return -EINVAL;
 556                 }
 557
 558                 if (isempty(*a)) {
 559                         log_warning("No password entered, skipping.");
 560                         break;
 561                 }
 562
 563                 r = ask_password_tty(-1, msg2, NULL, 0, 0, NULL, &b);
 564                 if (r < 0)
 565                         return log_error_errno(r, "Failed to query root password: %m");
 566
 567                 if (!streq(*a, *b)) {
 568                         log_error("Entered passwords did not match, please try again.");
 569                         continue;
 570                 }
 571
 572                 arg_root_password = TAKE_PTR(*a);
 573                 break;
 574         }
 575
 576         return 0;
 577 }
 578
 579 static int write_root_shadow(const char *path, const struct spwd *p) {
 580         _cleanup_fclose_ FILE *f = NULL;
 581         int r;
 582
 583         assert(path);
 584         assert(p);
 585
 586         RUN_WITH_UMASK(0777)
 587                 f = fopen(path, "wex");
 588         if (!f)
 589                 return -errno;
 590
 591         r = putspent_sane(p, f);
 592         if (r < 0)
 593                 return r;
 594
 595         return fflush_sync_and_check(f);
 596 }
 597
 598 static int process_root_password(void) {
 599
 600         struct spwd item = {
 601                 .sp_namp = (char*) "root",
 602                 .sp_min = -1,
 603                 .sp_max = -1,
 604                 .sp_warn = -1,
 605                 .sp_inact = -1,
 606                 .sp_expire = -1,
 607                 .sp_flag = (unsigned long) -1, /* this appears to be what everybody does ... */
 608         };
 609         _cleanup_free_ char *salt = NULL;
 610         _cleanup_close_ int lock = -1;
 611         struct crypt_data cd = {};
 612
 613         const char *etc_shadow;
 614         int r;
 615
 616         etc_shadow = prefix_roota(arg_root, "/etc/shadow");
 617         if (laccess(etc_shadow, F_OK) >= 0)
 618                 return 0;
 619
 620         (void) mkdir_parents(etc_shadow, 0755);
 621
 622         lock = take_etc_passwd_lock(arg_root);
 623         if (lock < 0)
 624                 return log_error_errno(lock, "Failed to take a lock: %m");
 625
 626         if (arg_copy_root_password && arg_root) {
 627                 struct spwd *p;
 628
 629                 errno = 0;
 630                 p = getspnam("root");
 631                 if (p || errno != ENOENT) {
 632                         if (!p) {
 633                                 if (!errno)
 634                                         errno = EIO;
 635
 636                                 return log_error_errno(errno, "Failed to find shadow entry for root: %m");
 637                         }
 638
 639                         r = write_root_shadow(etc_shadow, p);
 640                         if (r < 0)
 641                                 return log_error_errno(r, "Failed to write %s: %m", etc_shadow);
 642
 643                         log_info("%s copied.", etc_shadow);
 644                         return 0;
 645                 }
 646         }
 647
 648         r = prompt_root_password();
 649         if (r < 0)
 650                 return r;
 651
 652         if (!arg_root_password)
 653                 return 0;
 654
 655         r = make_salt(&salt);
 656         if (r < 0)
 657                 return log_error_errno(r, "Failed to get salt: %m");
 658
 659         errno = 0;
 660         item.sp_pwdp = crypt_r(arg_root_password, salt, &cd);
 661         if (!item.sp_pwdp)
 662                 return log_error_errno(errno == 0 ? SYNTHETIC_ERRNO(EINVAL) : errno,
 663                                        "Failed to encrypt password: %m");
 664
 665         item.sp_lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY);
 666
 667         r = write_root_shadow(etc_shadow, &item);
 668         if (r < 0)
 669                 return log_error_errno(r, "Failed to write %s: %m", etc_shadow);
 670
 671         log_info("%s written.", etc_shadow);
 672         return 0;
 673 }
 674
 675 static int help(void) {
 676         _cleanup_free_ char *link = NULL;
 677         int r;
 678
 679         r = terminal_urlify_man("systemd-firstboot", "1", &link);
 680         if (r < 0)
 681                 return log_oom();
 682
 683         printf("%s [OPTIONS...]\n\n"
 684                "Configures basic settings of the system.\n\n"
 685                "  -h --help                    Show this help\n"
 686                "     --version                 Show package version\n"
 687                "     --root=PATH               Operate on an alternate filesystem root\n"
 688                "     --locale=LOCALE           Set primary locale (LANG=)\n"
 689                "     --locale-messages=LOCALE  Set message locale (LC_MESSAGES=)\n"
 690                "     --keymap=KEYMAP           Set keymap\n"
 691                "     --timezone=TIMEZONE       Set timezone\n"
 692                "     --hostname=NAME           Set host name\n"
 693                "     --machine-ID=ID           Set machine ID\n"
 694                "     --root-password=PASSWORD  Set root password\n"
 695                "     --root-password-file=FILE Set root password from file\n"
 696                "     --prompt-locale           Prompt the user for locale settings\n"
 697                "     --prompt-keymap           Prompt the user for keymap settings\n"
 698                "     --prompt-timezone         Prompt the user for timezone\n"
 699                "     --prompt-hostname         Prompt the user for hostname\n"
 700                "     --prompt-root-password    Prompt the user for root password\n"
 701                "     --prompt                  Prompt for all of the above\n"
 702                "     --copy-locale             Copy locale from host\n"
 703                "     --copy-keymap             Copy keymap from host\n"
 704                "     --copy-timezone           Copy timezone from host\n"
 705                "     --copy-root-password      Copy root password from host\n"
 706                "     --copy                    Copy locale, keymap, timezone, root password\n"
 707                "     --setup-machine-id        Generate a new random machine ID\n"
 708                "\nSee the %s for details.\n"
 709                , program_invocation_short_name
 710                , link
 711         );
 712
 713         return 0;
 714 }
 715
 716 static int parse_argv(int argc, char *argv[]) {
 717
 718         enum {
 719                 ARG_VERSION = 0x100,
 720                 ARG_ROOT,
 721                 ARG_LOCALE,
 722                 ARG_LOCALE_MESSAGES,
 723                 ARG_KEYMAP,
 724                 ARG_TIMEZONE,
 725                 ARG_HOSTNAME,
 726                 ARG_MACHINE_ID,
 727                 ARG_ROOT_PASSWORD,
 728                 ARG_ROOT_PASSWORD_FILE,
 729                 ARG_PROMPT,
 730                 ARG_PROMPT_LOCALE,
 731                 ARG_PROMPT_KEYMAP,
 732                 ARG_PROMPT_TIMEZONE,
 733                 ARG_PROMPT_HOSTNAME,
 734                 ARG_PROMPT_ROOT_PASSWORD,
 735                 ARG_COPY,
 736                 ARG_COPY_LOCALE,
 737                 ARG_COPY_KEYMAP,
 738                 ARG_COPY_TIMEZONE,
 739                 ARG_COPY_ROOT_PASSWORD,
 740                 ARG_SETUP_MACHINE_ID,
 741         };
 742
 743         static const struct option options[] = {
 744                 { "help",                 no_argument,       NULL, 'h'                      },
 745                 { "version",              no_argument,       NULL, ARG_VERSION              },
 746                 { "root",                 required_argument, NULL, ARG_ROOT                 },
 747                 { "locale",               required_argument, NULL, ARG_LOCALE               },
 748                 { "locale-messages",      required_argument, NULL, ARG_LOCALE_MESSAGES      },
 749                 { "keymap",               required_argument, NULL, ARG_KEYMAP               },
 750                 { "timezone",             required_argument, NULL, ARG_TIMEZONE             },
 751                 { "hostname",             required_argument, NULL, ARG_HOSTNAME             },
 752                 { "machine-id",           required_argument, NULL, ARG_MACHINE_ID           },
 753                 { "root-password",        required_argument, NULL, ARG_ROOT_PASSWORD        },
 754                 { "root-password-file",   required_argument, NULL, ARG_ROOT_PASSWORD_FILE   },
 755                 { "prompt",               no_argument,       NULL, ARG_PROMPT               },
 756                 { "prompt-locale",        no_argument,       NULL, ARG_PROMPT_LOCALE        },
 757                 { "prompt-keymap",        no_argument,       NULL, ARG_PROMPT_KEYMAP        },
 758                 { "prompt-timezone",      no_argument,       NULL, ARG_PROMPT_TIMEZONE      },
 759                 { "prompt-hostname",      no_argument,       NULL, ARG_PROMPT_HOSTNAME      },
 760                 { "prompt-root-password", no_argument,       NULL, ARG_PROMPT_ROOT_PASSWORD },
 761                 { "copy",                 no_argument,       NULL, ARG_COPY                 },
 762                 { "copy-locale",          no_argument,       NULL, ARG_COPY_LOCALE          },
 763                 { "copy-keymap",          no_argument,       NULL, ARG_COPY_KEYMAP          },
 764                 { "copy-timezone",        no_argument,       NULL, ARG_COPY_TIMEZONE        },
 765                 { "copy-root-password",   no_argument,       NULL, ARG_COPY_ROOT_PASSWORD   },
 766                 { "setup-machine-id",     no_argument,       NULL, ARG_SETUP_MACHINE_ID     },
 767                 {}
 768         };
 769
 770         int r, c;
 771
 772         assert(argc >= 0);
 773         assert(argv);
 774
 775         while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
 776
 777                 switch (c) {
 778
 779                 case 'h':
 780                         return help();
 781
 782                 case ARG_VERSION:
 783                         return version();
 784
 785                 case ARG_ROOT:
 786                         r = parse_path_argument_and_warn(optarg, true, &arg_root);
 787                         if (r < 0)
 788                                 return r;
 789                         break;
 790
 791                 case ARG_LOCALE:
 792                         if (!locale_is_valid(optarg))
 793                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 794                                                        "Locale %s is not valid.", optarg);
 795
 796                         r = free_and_strdup(&arg_locale, optarg);
 797                         if (r < 0)
 798                                 return log_oom();
 799
 800                         break;
 801
 802                 case ARG_LOCALE_MESSAGES:
 803                         if (!locale_is_valid(optarg))
 804                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 805                                                        "Locale %s is not valid.", optarg);
 806
 807                         r = free_and_strdup(&arg_locale_messages, optarg);
 808                         if (r < 0)
 809                                 return log_oom();
 810
 811                         break;
 812
 813                 case ARG_KEYMAP:
 814                         if (!keymap_is_valid(optarg))
 815                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 816                                                        "Keymap %s is not valid.", optarg);
 817
 818                         r = free_and_strdup(&arg_keymap, optarg);
 819                         if (r < 0)
 820                                 return log_oom();
 821
 822                         break;
 823
 824                 case ARG_TIMEZONE:
 825                         if (!timezone_is_valid(optarg, LOG_ERR))
 826                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 827                                                        "Timezone %s is not valid.", optarg);
 828
 829                         r = free_and_strdup(&arg_timezone, optarg);
 830                         if (r < 0)
 831                                 return log_oom();
 832
 833                         break;
 834
 835                 case ARG_ROOT_PASSWORD:
 836                         r = free_and_strdup(&arg_root_password, optarg);
 837                         if (r < 0)
 838                                 return log_oom();
 839                         break;
 840
 841                 case ARG_ROOT_PASSWORD_FILE:
 842                         arg_root_password = mfree(arg_root_password);
 843
 844                         r = read_one_line_file(optarg, &arg_root_password);
 845                         if (r < 0)
 846                                 return log_error_errno(r, "Failed to read %s: %m", optarg);
 847
 848                         break;
 849
 850                 case ARG_HOSTNAME:
 851                         if (!hostname_is_valid(optarg, true))
 852                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 853                                                        "Host name %s is not valid.", optarg);
 854
 855                         hostname_cleanup(optarg);
 856                         r = free_and_strdup(&arg_hostname, optarg);
 857                         if (r < 0)
 858                                 return log_oom();
 859
 860                         break;
 861
 862                 case ARG_MACHINE_ID:
 863                         if (sd_id128_from_string(optarg, &arg_machine_id) < 0)
 864                                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
 865                                                        "Failed to parse machine id %s.", optarg);
 866
 867                         break;
 868
 869                 case ARG_PROMPT:
 870                         arg_prompt_locale = arg_prompt_keymap = arg_prompt_timezone = arg_prompt_hostname = arg_prompt_root_password = true;
 871                         break;
 872
 873                 case ARG_PROMPT_LOCALE:
 874                         arg_prompt_locale = true;
 875                         break;
 876
 877                 case ARG_PROMPT_KEYMAP:
 878                         arg_prompt_keymap = true;
 879                         break;
 880
 881                 case ARG_PROMPT_TIMEZONE:
 882                         arg_prompt_timezone = true;
 883                         break;
 884
 885                 case ARG_PROMPT_HOSTNAME:
 886                         arg_prompt_hostname = true;
 887                         break;
 888
 889                 case ARG_PROMPT_ROOT_PASSWORD:
 890                         arg_prompt_root_password = true;
 891                         break;
 892
 893                 case ARG_COPY:
 894                         arg_copy_locale = arg_copy_keymap = arg_copy_timezone = arg_copy_root_password = true;
 895                         break;
 896
 897                 case ARG_COPY_LOCALE:
 898                         arg_copy_locale = true;
 899                         break;
 900
 901                 case ARG_COPY_KEYMAP:
 902                         arg_copy_keymap = true;
 903                         break;
 904
 905                 case ARG_COPY_TIMEZONE:
 906                         arg_copy_timezone = true;
 907                         break;
 908
 909                 case ARG_COPY_ROOT_PASSWORD:
 910                         arg_copy_root_password = true;
 911                         break;
 912
 913                 case ARG_SETUP_MACHINE_ID:
 914
 915                         r = sd_id128_randomize(&arg_machine_id);
 916                         if (r < 0)
 917                                 return log_error_errno(r, "Failed to generate randomized machine ID: %m");
 918
 919                         break;
 920
 921                 case '?':
 922                         return -EINVAL;
 923
 924                 default:
 925                         assert_not_reached("Unhandled option");
 926                 }
 927
 928         return 1;
 929 }
 930
 931 static int run(int argc, char *argv[]) {
 932         bool enabled;
 933         int r;
 934
 935         r = parse_argv(argc, argv);
 936         if (r <= 0)
 937                 return r;
 938
 939         log_setup_service();
 940
 941         umask(0022);
 942
 943         r = proc_cmdline_get_bool("systemd.firstboot", &enabled);
 944         if (r < 0)
 945                 return log_error_errno(r, "Failed to parse systemd.firstboot= kernel command line argument, ignoring: %m");
 946         if (r > 0 && !enabled)
 947                 return 0; /* disabled */
 948
 949         r = process_locale();
 950         if (r < 0)
 951                 return r;
 952
 953         r = process_keymap();
 954         if (r < 0)
 955                 return r;
 956
 957         r = process_timezone();
 958         if (r < 0)
 959                 return r;
 960
 961         r = process_hostname();
 962         if (r < 0)
 963                 return r;
 964
 965         r = process_machine_id();
 966         if (r < 0)
 967                 return r;
 968
 969         r = process_root_password();
 970         if (r < 0)
 971                 return r;
 972
 973         return 0;
 974 }
 975
 976 DEFINE_MAIN_FUNCTION(run);