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