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 "fd-util.h"
  26 #include "fileio.h"
  27 #include "fs-util.h"
  28 #include "hostname-util.h"
  29 #include "locale-util.h"
  30 #include "main-func.h"
  31 #include "mkdir.h"
  32 #include "os-util.h"
  33 #include "parse-util.h"
  34 #include "path-util.h"
  35 #include "proc-cmdline.h"
  36 #include "random-util.h"
  37 #include "string-util.h"
  38 #include "strv.h"
  39 #include "terminal-util.h"
  40 #include "time-util.h"
  41 #include "umask-util.h"
  42 #include "user-util.h"
  43
  44 static char *arg_root = NULL;
  45 static char *arg_locale = NULL;  /* $LANG */
  46 static char *arg_keymap = NULL;
  47 static char *arg_locale_messages = NULL; /* $LC_MESSAGES */
  48 static char *arg_timezone = NULL;
  49 static char *arg_hostname = NULL;
  50 static sd_id128_t arg_machine_id = {};
  51 static char *arg_root_password = NULL;
  52 static bool arg_prompt_locale = false;
  53 static bool arg_prompt_keymap = false;
  54 static bool arg_prompt_timezone = false;
  55 static bool arg_prompt_hostname = false;
  56 static bool arg_prompt_root_password = false;
  57 static bool arg_copy_locale = false;
  58 static bool arg_copy_keymap = false;
  59 static bool arg_copy_timezone = false;
  60 static bool arg_copy_root_password = false;
  61
  62 STATIC_DESTRUCTOR_REGISTER(arg_root, freep);
  63 STATIC_DESTRUCTOR_REGISTER(arg_locale, freep);
  64 STATIC_DESTRUCTOR_REGISTER(arg_locale_messages, freep);
  65 STATIC_DESTRUCTOR_REGISTER(arg_keymap, freep);
  66 STATIC_DESTRUCTOR_REGISTER(arg_timezone, freep);
  67 STATIC_DESTRUCTOR_REGISTER(arg_hostname, freep);
  68 STATIC_DESTRUCTOR_REGISTER(arg_root_password, string_free_erasep);
  69
  70 static bool press_any_key(void) {
  71         char k = 0;
  72         bool need_nl = true;
  73
  74         printf("-- Press any key to proceed --");
  75         fflush(stdout);
  76
  77         (void) read_one_char(stdin, &k, USEC_INFINITY, &need_nl);
  78
  79         if (need_nl)
  80                 putchar('\n');
  81
  82         return k != 'q';
  83 }
  84
  85 static void print_welcome(void) {
  86         _cleanup_free_ char *pretty_name = NULL;
  87         static bool done = false;
  88         int r;
  89
  90         if (done)
  91                 return;
  92
  93         r = parse_os_release(arg_root, "PRETTY_NAME", &pretty_name, NULL);
  94         if (r < 0)
  95                 log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r,
  96                                "Failed to read os-release file, ignoring: %m");
  97
  98         printf("\nWelcome to your new installation of %s!\nPlease configure a few basic system settings:\n\n",
  99                isempty(pretty_name) ? "Linux" : pretty_name);
 100
 101         press_any_key();
 102
 103         done = true;
 104 }
 105
 106 static int show_menu(char **x, unsigned n_columns, unsigned width, unsigned percentage) {
 107         unsigned break_lines, break_modulo;
 108         size_t n, per_column, i, j;
 109
 110         assert(n_columns > 0);
 111
 112         n = strv_length(x);
 113         per_column = DIV_ROUND_UP(n, n_columns);
 114
 115         break_lines = lines();
 116         if (break_lines > 2)
 117                 break_lines--;
 118
 119         /* The first page gets two extra lines, since we want to show
 120          * a title */
 121         break_modulo = break_lines;
 122         if (break_modulo > 3)
 123                 break_modulo -= 3;
 124
 125         for (i = 0; i < per_column; i++) {
 126
 127                 for (j = 0; j < n_columns; j ++) {
 128                         _cleanup_free_ char *e = NULL;
 129
 130                         if (j * per_column + i >= n)
 131                                 break;
 132
 133                         e = ellipsize(x[j * per_column + i], width, percentage);
 134                         if (!e)
 135                                 return log_oom();
 136
 137                         printf("%4zu) %-*s", j * per_column + i + 1, width, e);
 138                 }
 139
 140                 putchar('\n');
 141
 142                 /* on the first screen we reserve 2 extra lines for the title */
 143                 if (i % break_lines == break_modulo) {
 144                         if (!press_any_key())
 145                                 return 0;
 146                 }
 147         }
 148
 149         return 0;
 150 }
 151
 152 static int prompt_loop(const char *text, char **l, bool (*is_valid)(const char *name), char **ret) {
 153         int r;
 154
 155         assert(text);
 156         assert(is_valid);
 157         assert(ret);
 158
 159         for (;;) {
 160                 _cleanup_free_ char *p = NULL;
 161                 unsigned u;
 162
 163                 r = ask_string(&p, "%s %s (empty to skip): ", special_glyph(TRIANGULAR_BULLET), text);
 164                 if (r < 0)
 165                         return log_error_errno(r, "Failed to query user: %m");
 166
 167                 if (isempty(p)) {
 168                         log_warning("No data entered, skipping.");
 169                         return 0;
 170                 }
 171
 172                 r = safe_atou(p, &u);
 173                 if (r >= 0) {
 174                         char *c;
 175
 176                         if (u <= 0 || u > strv_length(l)) {
 177                                 log_error("Specified entry number out of range.");
 178                                 continue;
 179                         }
 180
 181                         log_info("Selected '%s'.", l[u-1]);
 182
 183                         c = strdup(l[u-1]);
 184                         if (!c)
 185                                 return log_oom();
 186
 187                         free(*ret);
 188                         *ret = c;
 189                         return 0;
 190                 }
 191
 192                 if (!is_valid(p)) {
 193                         log_error("Entered data invalid.");
 194                         continue;
 195                 }
 196
 197                 free(*ret);
 198                 *ret = p;
 199                 p = 0;
 200                 return 0;
 201         }
 202 }
 203
 204 static int prompt_locale(void) {
 205         _cleanup_strv_free_ char **locales = NULL;
 206         int r;
 207
 208         if (arg_locale || arg_locale_messages)
 209                 return 0;
 210
 211         if (!arg_prompt_locale)
 212                 return 0;
 213
 214         r = get_locales(&locales);
 215         if (r < 0)
 216                 return log_error_errno(r, "Cannot query locales list: %m");
 217
 218         print_welcome();
 219
 220         printf("\nAvailable Locales:\n\n");
 221         r = show_menu(locales, 3, 22, 60);
 222         if (r < 0)
 223                 return r;
 224
 225         putchar('\n');
 226
 227         r = prompt_loop("Please enter system locale name or number", locales, locale_is_valid, &arg_locale);
 228         if (r < 0)
 229                 return r;
 230
 231         if (isempty(arg_locale))
 232                 return 0;
 233
 234         r = prompt_loop("Please enter system message locale name or number", locales, locale_is_valid, &arg_locale_messages);
 235         if (r < 0)
 236                 return r;
 237
 238         return 0;
 239 }
 240
 241 static int process_locale(void) {
 242         const char *etc_localeconf;
 243         char* locales[3];
 244         unsigned i = 0;
 245         int r;
 246
 247         etc_localeconf = prefix_roota(arg_root, "/etc/locale.conf");
 248         if (laccess(etc_localeconf, F_OK) >= 0)
 249                 return 0;
 250
 251         if (arg_copy_locale && arg_root) {
 252
 253                 mkdir_parents(etc_localeconf, 0755);
 254                 r = copy_file("/etc/locale.conf", etc_localeconf, 0, 0644, 0, COPY_REFLINK);
 255                 if (r != -ENOENT) {
 256                         if (r < 0)
 257                                 return log_error_errno(r, "Failed to copy %s: %m", etc_localeconf);
 258
 259                         log_info("%s copied.", etc_localeconf);
 260                         return 0;
 261                 }
 262         }
 263
 264         r = prompt_locale();
 265         if (r < 0)
 266                 return r;
 267
 268         if (!isempty(arg_locale))
 269                 locales[i++] = strjoina("LANG=", arg_locale);
 270         if (!isempty(arg_locale_messages) && !streq(arg_locale_messages, arg_locale))
 271                 locales[i++] = strjoina("LC_MESSAGES=", arg_locale_messages);
 272
 273         if (i == 0)
 274                 return 0;
 275
 276         locales[i] = NULL;
 277
 278         mkdir_parents(etc_localeconf, 0755);
 279         r = write_env_file(etc_localeconf, locales);
 280         if (r < 0)
 281                 return log_error_errno(r, "Failed to write %s: %m", etc_localeconf);
 282
 283         log_info("%s written.", etc_localeconf);
 284         return 0;
 285 }
 286
 287 static int prompt_keymap(void) {
 288         _cleanup_strv_free_ char **kmaps = NULL;
 289         int r;
 290
 291         if (arg_keymap)
 292                 return 0;
 293
 294         if (!arg_prompt_keymap)
 295                 return 0;
 296
 297         r = get_keymaps(&kmaps);
 298         if (r == -ENOENT) /* no keymaps installed */
 299                 return r;
 300         if (r < 0)
 301                 return log_error_errno(r, "Failed to read keymaps: %m");
 302
 303         print_welcome();
 304
 305         printf("\nAvailable keymaps:\n\n");
 306         r = show_menu(kmaps, 3, 22, 60);
 307         if (r < 0)
 308                 return r;
 309
 310         putchar('\n');
 311
 312         return prompt_loop("Please enter system keymap name or number",
 313                            kmaps, keymap_is_valid, &arg_keymap);
 314 }
 315
 316 static int process_keymap(void) {
 317         const char *etc_vconsoleconf;
 318         char **keymap;
 319         int r;
 320
 321         etc_vconsoleconf = prefix_roota(arg_root, "/etc/vconsole.conf");
 322         if (laccess(etc_vconsoleconf, F_OK) >= 0)
 323                 return 0;
 324
 325         if (arg_copy_keymap && arg_root) {
 326
 327                 mkdir_parents(etc_vconsoleconf, 0755);
 328                 r = copy_file("/etc/vconsole.conf", etc_vconsoleconf, 0, 0644, 0, COPY_REFLINK);
 329                 if (r != -ENOENT) {
 330                         if (r < 0)
 331                                 return log_error_errno(r, "Failed to copy %s: %m", etc_vconsoleconf);
 332
 333                         log_info("%s copied.", etc_vconsoleconf);
 334                         return 0;
 335                 }
 336         }
 337
 338         r = prompt_keymap();
 339         if (r == -ENOENT)
 340                 return 0; /* don't fail if no keymaps are installed */
 341         if (r < 0)
 342                 return r;
 343
 344         if (isempty(arg_keymap))
 345                 return 0;
 346
 347         keymap = STRV_MAKE(strjoina("KEYMAP=", arg_keymap));
 348
 349         r = mkdir_parents(etc_vconsoleconf, 0755);
 350         if (r < 0)
 351                 return log_error_errno(r, "Failed to create the parent directory of %s: %m", etc_vconsoleconf);
 352
 353         r = write_env_file(etc_vconsoleconf, keymap);
 354         if (r < 0)
 355                 return log_error_errno(r, "Failed to write %s: %m", etc_vconsoleconf);
 356
 357         log_info("%s written.", etc_vconsoleconf);
 358         return 0;
 359 }
 360
 361 static bool timezone_is_valid_log_error(const char *name) {
 362         return timezone_is_valid(name, LOG_ERR);
 363 }
 364
 365 static int prompt_timezone(void) {
 366         _cleanup_strv_free_ char **zones = NULL;
 367         int r;
 368
 369         if (arg_timezone)
 370                 return 0;
 371
 372         if (!arg_prompt_timezone)
 373                 return 0;
 374
 375         r = get_timezones(&zones);
 376         if (r < 0)
 377                 return log_error_errno(r, "Cannot query timezone list: %m");
 378
 379         print_welcome();
 380
 381         printf("\nAvailable Time Zones:\n\n");
 382         r = show_menu(zones, 3, 22, 30);
 383         if (r < 0)
 384                 return r;
 385
 386         putchar('\n');
 387
 388         r = prompt_loop("Please enter timezone name or number", zones, timezone_is_valid_log_error, &arg_timezone);
 389         if (r < 0)
 390                 return r;
 391
 392         return 0;
 393 }
 394
 395 static int process_timezone(void) {
 396         const char *etc_localtime, *e;
 397         int r;
 398
 399         etc_localtime = prefix_roota(arg_root, "/etc/localtime");
 400         if (laccess(etc_localtime, F_OK) >= 0)
 401                 return 0;
 402
 403         if (arg_copy_timezone && arg_root) {
 404                 _cleanup_free_ char *p = NULL;
 405
 406                 r = readlink_malloc("/etc/localtime", &p);
 407                 if (r != -ENOENT) {
 408                         if (r < 0)
 409                                 return log_error_errno(r, "Failed to read host timezone: %m");
 410
 411                         mkdir_parents(etc_localtime, 0755);
 412                         if (symlink(p, etc_localtime) < 0)
 413                                 return log_error_errno(errno, "Failed to create %s symlink: %m", etc_localtime);
 414
 415                         log_info("%s copied.", etc_localtime);
 416                         return 0;
 417                 }
 418         }
 419
 420         r = prompt_timezone();
 421         if (r < 0)
 422                 return r;
 423
 424         if (isempty(arg_timezone))
 425                 return 0;
 426
 427         e = strjoina("../usr/share/zoneinfo/", arg_timezone);
 428
 429         mkdir_parents(etc_localtime, 0755);
 430         if (symlink(e, etc_localtime) < 0)
 431                 return log_error_errno(errno, "Failed to create %s symlink: %m", etc_localtime);
 432
 433         log_info("%s written", etc_localtime);
 434         return 0;
 435 }
 436
 437 static int prompt_hostname(void) {
 438         int r;
 439
 440         if (arg_hostname)
 441                 return 0;
 442
 443         if (!arg_prompt_hostname)
 444                 return 0;
 445
 446         print_welcome();
 447         putchar('\n');
 448
 449         for (;;) {
 450                 _cleanup_free_ char *h = NULL;
 451
 452                 r = ask_string(&h, "%s Please enter hostname for new system (empty to skip): ", special_glyph(TRIANGULAR_BULLET));
 453                 if (r < 0)
 454                         return log_error_errno(r, "Failed to query hostname: %m");
 455
 456                 if (isempty(h)) {
 457                         log_warning("No hostname entered, skipping.");
 458                         break;
 459                 }
 460
 461                 if (!hostname_is_valid(h, true)) {
 462                         log_error("Specified hostname invalid.");
 463                         continue;
 464                 }
 465
 466                 /* Get rid of the trailing dot that we allow, but don't want to see */
 467                 arg_hostname = hostname_cleanup(h);
 468                 h = NULL;
 469                 break;
 470         }
 471
 472         return 0;
 473 }
 474
 475 static int process_hostname(void) {
 476         const char *etc_hostname;
 477         int r;
 478
 479         etc_hostname = prefix_roota(arg_root, "/etc/hostname");
 480         if (laccess(etc_hostname, F_OK) >= 0)
 481                 return 0;
 482
 483         r = prompt_hostname();
 484         if (r < 0)
 485                 return r;
 486
 487         if (isempty(arg_hostname))
 488                 return 0;
 489
 490         mkdir_parents(etc_hostname, 0755);
 491         r = write_string_file(etc_hostname, arg_hostname,
 492                               WRITE_STRING_FILE_CREATE | WRITE_STRING_FILE_SYNC);
 493         if (r < 0)
 494                 return log_error_errno(r, "Failed to write %s: %m", etc_hostname);
 495
 496         log_info("%s written.", etc_hostname);
 497         return 0;
 498 }
 499
 500 static int process_machine_id(void) {
 501         const char *etc_machine_id;
 502         char id[SD_ID128_STRING_MAX];
 503         int r;
 504
 505         etc_machine_id = prefix_roota(arg_root, "/etc/machine-id");
 506         if (laccess(etc_machine_id, F_OK) >= 0)
 507                 return 0;
 508
 509         if (sd_id128_is_null(arg_machine_id))
 510                 return 0;
 511
 512         mkdir_parents(etc_machine_id, 0755);
 513         r = write_string_file(etc_machine_id, sd_id128_to_string(arg_machine_id, id),
 514                               WRITE_STRING_FILE_CREATE | WRITE_STRING_FILE_SYNC);
 515         if (r < 0)
 516                 return log_error_errno(r, "Failed to write machine id: %m");
 517
 518         log_info("%s written.", etc_machine_id);
 519         return 0;
 520 }
 521
 522 static int prompt_root_password(void) {
 523         const char *msg1, *msg2, *etc_shadow;
 524         int r;
 525
 526         if (arg_root_password)
 527                 return 0;
 528
 529         if (!arg_prompt_root_password)
 530                 return 0;
 531
 532         etc_shadow = prefix_roota(arg_root, "/etc/shadow");
 533         if (laccess(etc_shadow, F_OK) >= 0)
 534                 return 0;
 535
 536         print_welcome();
 537         putchar('\n');
 538
 539         msg1 = strjoina(special_glyph(TRIANGULAR_BULLET), " Please enter a new root password (empty to skip): ");
 540         msg2 = strjoina(special_glyph(TRIANGULAR_BULLET), " Please enter new root password again: ");
 541
 542         for (;;) {
 543                 _cleanup_strv_free_erase_ char **a = NULL, **b = NULL;
 544
 545                 r = ask_password_tty(-1, msg1, NULL, 0, 0, NULL, &a);
 546                 if (r < 0)
 547                         return log_error_errno(r, "Failed to query root password: %m");
 548                 if (strv_length(a) != 1) {
 549                         log_warning("Received multiple passwords, where we expected one.");
 550                         return -EINVAL;
 551                 }
 552
 553                 if (isempty(*a)) {
 554                         log_warning("No password entered, skipping.");
 555                         break;
 556                 }
 557
 558                 r = ask_password_tty(-1, msg2, NULL, 0, 0, NULL, &b);
 559                 if (r < 0)
 560                         return log_error_errno(r, "Failed to query root password: %m");
 561
 562                 if (!streq(*a, *b)) {
 563                         log_error("Entered passwords did not match, please try again.");
 564                         continue;
 565                 }
 566
 567                 arg_root_password = TAKE_PTR(*a);
 568                 break;
 569         }
 570
 571         return 0;
 572 }
 573
 574 static int write_root_shadow(const char *path, const struct spwd *p) {
 575         _cleanup_fclose_ FILE *f = NULL;
 576         int r;
 577
 578         assert(path);
 579         assert(p);
 580
 581         RUN_WITH_UMASK(0777)
 582                 f = fopen(path, "wex");
 583         if (!f)
 584                 return -errno;
 585
 586         r = putspent_sane(p, f);
 587         if (r < 0)
 588                 return r;
 589
 590         return fflush_sync_and_check(f);
 591 }
 592
 593 static int process_root_password(void) {
 594
 595         static const char table[] =
 596                 "abcdefghijklmnopqrstuvwxyz"
 597                 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
 598                 "0123456789"
 599                 "./";
 600
 601         struct spwd item = {
 602                 .sp_namp = (char*) "root",
 603                 .sp_min = -1,
 604                 .sp_max = -1,
 605                 .sp_warn = -1,
 606                 .sp_inact = -1,
 607                 .sp_expire = -1,
 608                 .sp_flag = (unsigned long) -1, /* this appears to be what everybody does ... */
 609         };
 610
 611         _cleanup_close_ int lock = -1;
 612         char salt[3+16+1+1];
 613         uint8_t raw[16];
 614         unsigned i;
 615         char *j;
 616
 617         const char *etc_shadow;
 618         int r;
 619
 620         etc_shadow = prefix_roota(arg_root, "/etc/shadow");
 621         if (laccess(etc_shadow, F_OK) >= 0)
 622                 return 0;
 623
 624         mkdir_parents(etc_shadow, 0755);
 625
 626         lock = take_etc_passwd_lock(arg_root);
 627         if (lock < 0)
 628                 return log_error_errno(lock, "Failed to take a lock: %m");
 629
 630         if (arg_copy_root_password && arg_root) {
 631                 struct spwd *p;
 632
 633                 errno = 0;
 634                 p = getspnam("root");
 635                 if (p || errno != ENOENT) {
 636                         if (!p) {
 637                                 if (!errno)
 638                                         errno = EIO;
 639
 640                                 return log_error_errno(errno, "Failed to find shadow entry for root: %m");
 641                         }
 642
 643                         r = write_root_shadow(etc_shadow, p);
 644                         if (r < 0)
 645                                 return log_error_errno(r, "Failed to write %s: %m", etc_shadow);
 646
 647                         log_info("%s copied.", etc_shadow);
 648                         return 0;
 649                 }
 650         }
 651
 652         r = prompt_root_password();
 653         if (r < 0)
 654                 return r;
 655
 656         if (!arg_root_password)
 657                 return 0;
 658
 659         /* Insist on the best randomness by setting RANDOM_BLOCK, this is about keeping passwords secret after all. */
 660         r = genuine_random_bytes(raw, 16, RANDOM_BLOCK);
 661         if (r < 0)
 662                 return log_error_errno(r, "Failed to get salt: %m");
 663
 664         /* We only bother with SHA512 hashed passwords, the rest is legacy, and we don't do legacy. */
 665         assert_cc(sizeof(table) == 64 + 1);
 666         j = stpcpy(salt, "$6$");
 667         for (i = 0; i < 16; i++)
 668                 j[i] = table[raw[i] & 63];
 669         j[i++] = '$';
 670         j[i] = 0;
 671
 672         errno = 0;
 673         item.sp_pwdp = crypt(arg_root_password, salt);
 674         if (!item.sp_pwdp) {
 675                 if (!errno)
 676                         errno = EINVAL;
 677
 678                 return log_error_errno(errno, "Failed to encrypt password: %m");
 679         }
 680
 681         item.sp_lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY);
 682
 683         r = write_root_shadow(etc_shadow, &item);
 684         if (r < 0)
 685                 return log_error_errno(r, "Failed to write %s: %m", etc_shadow);
 686
 687         log_info("%s written.", etc_shadow);
 688         return 0;
 689 }
 690
 691 static int help(void) {
 692         _cleanup_free_ char *link = NULL;
 693         int r;
 694
 695         r = terminal_urlify_man("systemd-firstboot", "1", &link);
 696         if (r < 0)
 697                 return log_oom();
 698
 699         printf("%s [OPTIONS...]\n\n"
 700                "Configures basic settings of the system.\n\n"
 701                "  -h --help                    Show this help\n"
 702                "     --version                 Show package version\n"
 703                "     --root=PATH               Operate on an alternate filesystem root\n"
 704                "     --locale=LOCALE           Set primary locale (LANG=)\n"
 705                "     --locale-messages=LOCALE  Set message locale (LC_MESSAGES=)\n"
 706                "     --keymap=KEYMAP           Set keymap\n"
 707                "     --timezone=TIMEZONE       Set timezone\n"
 708                "     --hostname=NAME           Set host name\n"
 709                "     --machine-ID=ID           Set machine ID\n"
 710                "     --root-password=PASSWORD  Set root password\n"
 711                "     --root-password-file=FILE Set root password from file\n"
 712                "     --prompt-locale           Prompt the user for locale settings\n"
 713                "     --prompt-keymap           Prompt the user for keymap settings\n"
 714                "     --prompt-timezone         Prompt the user for timezone\n"
 715                "     --prompt-hostname         Prompt the user for hostname\n"
 716                "     --prompt-root-password    Prompt the user for root password\n"
 717                "     --prompt                  Prompt for all of the above\n"
 718                "     --copy-locale             Copy locale from host\n"
 719                "     --copy-keymap             Copy keymap from host\n"
 720                "     --copy-timezone           Copy timezone from host\n"
 721                "     --copy-root-password      Copy root password from host\n"
 722                "     --copy                    Copy locale, keymap, timezone, root password\n"
 723                "     --setup-machine-id        Generate a new random machine ID\n"
 724                "\nSee the %s for details.\n"
 725                , program_invocation_short_name
 726                , link
 727         );
 728
 729         return 0;
 730 }
 731
 732 static int parse_argv(int argc, char *argv[]) {
 733
 734         enum {
 735                 ARG_VERSION = 0x100,
 736                 ARG_ROOT,
 737                 ARG_LOCALE,
 738                 ARG_LOCALE_MESSAGES,
 739                 ARG_KEYMAP,
 740                 ARG_TIMEZONE,
 741                 ARG_HOSTNAME,
 742                 ARG_MACHINE_ID,
 743                 ARG_ROOT_PASSWORD,
 744                 ARG_ROOT_PASSWORD_FILE,
 745                 ARG_PROMPT,
 746                 ARG_PROMPT_LOCALE,
 747                 ARG_PROMPT_KEYMAP,
 748                 ARG_PROMPT_TIMEZONE,
 749                 ARG_PROMPT_HOSTNAME,
 750                 ARG_PROMPT_ROOT_PASSWORD,
 751                 ARG_COPY,
 752                 ARG_COPY_LOCALE,
 753                 ARG_COPY_KEYMAP,
 754                 ARG_COPY_TIMEZONE,
 755                 ARG_COPY_ROOT_PASSWORD,
 756                 ARG_SETUP_MACHINE_ID,
 757         };
 758
 759         static const struct option options[] = {
 760                 { "help",                 no_argument,       NULL, 'h'                      },
 761                 { "version",              no_argument,       NULL, ARG_VERSION              },
 762                 { "root",                 required_argument, NULL, ARG_ROOT                 },
 763                 { "locale",               required_argument, NULL, ARG_LOCALE               },
 764                 { "locale-messages",      required_argument, NULL, ARG_LOCALE_MESSAGES      },
 765                 { "keymap",               required_argument, NULL, ARG_KEYMAP               },
 766                 { "timezone",             required_argument, NULL, ARG_TIMEZONE             },
 767                 { "hostname",             required_argument, NULL, ARG_HOSTNAME             },
 768                 { "machine-id",           required_argument, NULL, ARG_MACHINE_ID           },
 769                 { "root-password",        required_argument, NULL, ARG_ROOT_PASSWORD        },
 770                 { "root-password-file",   required_argument, NULL, ARG_ROOT_PASSWORD_FILE   },
 771                 { "prompt",               no_argument,       NULL, ARG_PROMPT               },
 772                 { "prompt-locale",        no_argument,       NULL, ARG_PROMPT_LOCALE        },
 773                 { "prompt-keymap",        no_argument,       NULL, ARG_PROMPT_KEYMAP        },
 774                 { "prompt-timezone",      no_argument,       NULL, ARG_PROMPT_TIMEZONE      },
 775                 { "prompt-hostname",      no_argument,       NULL, ARG_PROMPT_HOSTNAME      },
 776                 { "prompt-root-password", no_argument,       NULL, ARG_PROMPT_ROOT_PASSWORD },
 777                 { "copy",                 no_argument,       NULL, ARG_COPY                 },
 778                 { "copy-locale",          no_argument,       NULL, ARG_COPY_LOCALE          },
 779                 { "copy-keymap",          no_argument,       NULL, ARG_COPY_KEYMAP          },
 780                 { "copy-timezone",        no_argument,       NULL, ARG_COPY_TIMEZONE        },
 781                 { "copy-root-password",   no_argument,       NULL, ARG_COPY_ROOT_PASSWORD   },
 782                 { "setup-machine-id",     no_argument,       NULL, ARG_SETUP_MACHINE_ID     },
 783                 {}
 784         };
 785
 786         int r, c;
 787
 788         assert(argc >= 0);
 789         assert(argv);
 790
 791         while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
 792
 793                 switch (c) {
 794
 795                 case 'h':
 796                         return help();
 797
 798                 case ARG_VERSION:
 799                         return version();
 800
 801                 case ARG_ROOT:
 802                         r = parse_path_argument_and_warn(optarg, true, &arg_root);
 803                         if (r < 0)
 804                                 return r;
 805                         break;
 806
 807                 case ARG_LOCALE:
 808                         if (!locale_is_valid(optarg)) {
 809                                 log_error("Locale %s is not valid.", optarg);
 810                                 return -EINVAL;
 811                         }
 812
 813                         r = free_and_strdup(&arg_locale, optarg);
 814                         if (r < 0)
 815                                 return log_oom();
 816
 817                         break;
 818
 819                 case ARG_LOCALE_MESSAGES:
 820                         if (!locale_is_valid(optarg)) {
 821                                 log_error("Locale %s is not valid.", optarg);
 822                                 return -EINVAL;
 823                         }
 824
 825                         r = free_and_strdup(&arg_locale_messages, optarg);
 826                         if (r < 0)
 827                                 return log_oom();
 828
 829                         break;
 830
 831                 case ARG_KEYMAP:
 832                         if (!keymap_is_valid(optarg)) {
 833                                 log_error("Keymap %s is not valid.", optarg);
 834                                 return -EINVAL;
 835                         }
 836
 837                         r = free_and_strdup(&arg_keymap, optarg);
 838                         if (r < 0)
 839                                 return log_oom();
 840
 841                         break;
 842
 843                 case ARG_TIMEZONE:
 844                         if (!timezone_is_valid(optarg, LOG_ERR)) {
 845                                 log_error("Timezone %s is not valid.", optarg);
 846                                 return -EINVAL;
 847                         }
 848
 849                         r = free_and_strdup(&arg_timezone, optarg);
 850                         if (r < 0)
 851                                 return log_oom();
 852
 853                         break;
 854
 855                 case ARG_ROOT_PASSWORD:
 856                         r = free_and_strdup(&arg_root_password, optarg);
 857                         if (r < 0)
 858                                 return log_oom();
 859                         break;
 860
 861                 case ARG_ROOT_PASSWORD_FILE:
 862                         arg_root_password = mfree(arg_root_password);
 863
 864                         r = read_one_line_file(optarg, &arg_root_password);
 865                         if (r < 0)
 866                                 return log_error_errno(r, "Failed to read %s: %m", optarg);
 867
 868                         break;
 869
 870                 case ARG_HOSTNAME:
 871                         if (!hostname_is_valid(optarg, true)) {
 872                                 log_error("Host name %s is not valid.", optarg);
 873                                 return -EINVAL;
 874                         }
 875
 876                         hostname_cleanup(optarg);
 877                         r = free_and_strdup(&arg_hostname, optarg);
 878                         if (r < 0)
 879                                 return log_oom();
 880
 881                         break;
 882
 883                 case ARG_MACHINE_ID:
 884                         if (sd_id128_from_string(optarg, &arg_machine_id) < 0) {
 885                                 log_error("Failed to parse machine id %s.", optarg);
 886                                 return -EINVAL;
 887                         }
 888
 889                         break;
 890
 891                 case ARG_PROMPT:
 892                         arg_prompt_locale = arg_prompt_keymap = arg_prompt_timezone = arg_prompt_hostname = arg_prompt_root_password = true;
 893                         break;
 894
 895                 case ARG_PROMPT_LOCALE:
 896                         arg_prompt_locale = true;
 897                         break;
 898
 899                 case ARG_PROMPT_KEYMAP:
 900                         arg_prompt_keymap = true;
 901                         break;
 902
 903                 case ARG_PROMPT_TIMEZONE:
 904                         arg_prompt_timezone = true;
 905                         break;
 906
 907                 case ARG_PROMPT_HOSTNAME:
 908                         arg_prompt_hostname = true;
 909                         break;
 910
 911                 case ARG_PROMPT_ROOT_PASSWORD:
 912                         arg_prompt_root_password = true;
 913                         break;
 914
 915                 case ARG_COPY:
 916                         arg_copy_locale = arg_copy_keymap = arg_copy_timezone = arg_copy_root_password = true;
 917                         break;
 918
 919                 case ARG_COPY_LOCALE:
 920                         arg_copy_locale = true;
 921                         break;
 922
 923                 case ARG_COPY_KEYMAP:
 924                         arg_copy_keymap = true;
 925                         break;
 926
 927                 case ARG_COPY_TIMEZONE:
 928                         arg_copy_timezone = true;
 929                         break;
 930
 931                 case ARG_COPY_ROOT_PASSWORD:
 932                         arg_copy_root_password = true;
 933                         break;
 934
 935                 case ARG_SETUP_MACHINE_ID:
 936
 937                         r = sd_id128_randomize(&arg_machine_id);
 938                         if (r < 0)
 939                                 return log_error_errno(r, "Failed to generate randomized machine ID: %m");
 940
 941                         break;
 942
 943                 case '?':
 944                         return -EINVAL;
 945
 946                 default:
 947                         assert_not_reached("Unhandled option");
 948                 }
 949
 950         return 1;
 951 }
 952
 953 static int run(int argc, char *argv[]) {
 954         bool enabled;
 955         int r;
 956
 957         r = parse_argv(argc, argv);
 958         if (r <= 0)
 959                 return r;
 960
 961         log_setup_service();
 962
 963         umask(0022);
 964
 965         r = proc_cmdline_get_bool("systemd.firstboot", &enabled);
 966         if (r < 0)
 967                 return log_error_errno(r, "Failed to parse systemd.firstboot= kernel command line argument, ignoring: %m");
 968         if (r > 0 && !enabled)
 969                 return 0; /* disabled */
 970
 971         r = process_locale();
 972         if (r < 0)
 973                 return r;
 974
 975         r = process_keymap();
 976         if (r < 0)
 977                 return r;
 978
 979         r = process_timezone();
 980         if (r < 0)
 981                 return r;
 982
 983         r = process_hostname();
 984         if (r < 0)
 985                 return r;
 986
 987         r = process_machine_id();
 988         if (r < 0)
 989                 return r;
 990
 991         r = process_root_password();
 992         if (r < 0)
 993                 return r;
 994
 995         return 0;
 996 }
 997
 998 DEFINE_MAIN_FUNCTION(run);