summaryrefslogtreecommitdiff
path: root/src/systemd-firstboot/firstboot.c
blob: 1e1a592b7c32994956694a601a7b36428535c386 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
/***
  This file is part of systemd.

  Copyright 2014 Lennart Poettering

  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.

  systemd is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#include <fcntl.h>
#include <getopt.h>
#include <shadow.h>
#include <unistd.h>

#include "alloc-util.h"
#include "ask-password-api.h"
#include "copy.h"
#include "fd-util.h"
#include "fileio.h"
#include "fs-util.h"
#include "hostname-util.h"
#include "locale-util.h"
#include "mkdir.h"
#include "parse-util.h"
#include "path-util.h"
#include "random-util.h"
#include "string-util.h"
#include "strv.h"
#include "terminal-util.h"
#include "time-util.h"
#include "umask-util.h"
#include "user-util.h"

static char *arg_root = NULL;
static char *arg_locale = NULL;  /* $LANG */
static char *arg_locale_messages = NULL; /* $LC_MESSAGES */
static char *arg_timezone = NULL;
static char *arg_hostname = NULL;
static sd_id128_t arg_machine_id = {};
static char *arg_root_password = NULL;
static bool arg_prompt_locale = false;
static bool arg_prompt_timezone = false;
static bool arg_prompt_hostname = false;
static bool arg_prompt_root_password = false;
static bool arg_copy_locale = false;
static bool arg_copy_timezone = false;
static bool arg_copy_root_password = false;

static bool press_any_key(void) {
        char k = 0;
        bool need_nl = true;

        printf("-- Press any key to proceed --");
        fflush(stdout);

        (void) read_one_char(stdin, &k, USEC_INFINITY, &need_nl);

        if (need_nl)
                putchar('\n');

        return k != 'q';
}

static void print_welcome(void) {
        _cleanup_free_ char *pretty_name = NULL;
        const char *os_release = NULL;
        static bool done = false;
        int r;

        if (done)
                return;

        os_release = prefix_roota(arg_root, "/etc/os-release");
        r = parse_env_file(os_release, NEWLINE,
                           "PRETTY_NAME", &pretty_name,
                           NULL);
        if (r == -ENOENT) {

                os_release = prefix_roota(arg_root, "/usr/lib/os-release");
                r = parse_env_file(os_release, NEWLINE,
                                   "PRETTY_NAME", &pretty_name,
                                   NULL);
        }

        if (r < 0 && r != -ENOENT)
                log_warning_errno(r, "Failed to read os-release file: %m");

        printf("\nWelcome to your new installation of %s!\nPlease configure a few basic system settings:\n\n",
               isempty(pretty_name) ? "GNU/Linux" : pretty_name);

        press_any_key();

        done = true;
}

static int show_menu(char **x, unsigned n_columns, unsigned width, unsigned percentage) {
        unsigned n, per_column, i, j;
        unsigned break_lines, break_modulo;

        assert(n_columns > 0);

        n = strv_length(x);
        per_column = (n + n_columns - 1) / n_columns;

        break_lines = lines();
        if (break_lines > 2)
                break_lines--;

        /* The first page gets two extra lines, since we want to show
         * a title */
        break_modulo = break_lines;
        if (break_modulo > 3)
                break_modulo -= 3;

        for (i = 0; i < per_column; i++) {

                for (j = 0; j < n_columns; j ++) {
                        _cleanup_free_ char *e = NULL;

                        if (j * per_column + i >= n)
                                break;

                        e = ellipsize(x[j * per_column + i], width, percentage);
                        if (!e)
                                return log_oom();

                        printf("%4u) %-*s", j * per_column + i + 1, width, e);
                }

                putchar('\n');

                /* on the first screen we reserve 2 extra lines for the title */
                if (i % break_lines == break_modulo) {
                        if (!press_any_key())
                                return 0;
                }
        }

        return 0;
}

static int prompt_loop(const char *text, char **l, bool (*is_valid)(const char *name), char **ret) {
        int r;

        assert(text);
        assert(is_valid);
        assert(ret);

        for (;;) {
                _cleanup_free_ char *p = NULL;
                unsigned u;

                r = ask_string(&p, "%s %s (empty to skip): ", special_glyph(TRIANGULAR_BULLET), text);
                if (r < 0)
                        return log_error_errno(r, "Failed to query user: %m");

                if (isempty(p)) {
                        log_warning("No data entered, skipping.");
                        return 0;
                }

                r = safe_atou(p, &u);
                if (r >= 0) {
                        char *c;

                        if (u <= 0 || u > strv_length(l)) {
                                log_error("Specified entry number out of range.");
                                continue;
                        }

                        log_info("Selected '%s'.", l[u-1]);

                        c = strdup(l[u-1]);
                        if (!c)
                                return log_oom();

                        free(*ret);
                        *ret = c;
                        return 0;
                }

                if (!is_valid(p)) {
                        log_error("Entered data invalid.");
                        continue;
                }

                free(*ret);
                *ret = p;
                p = 0;
                return 0;
        }
}

static int prompt_locale(void) {
        _cleanup_strv_free_ char **locales = NULL;
        int r;

        if (arg_locale || arg_locale_messages)
                return 0;

        if (!arg_prompt_locale)
                return 0;

        r = get_locales(&locales);
        if (r < 0)
                return log_error_errno(r, "Cannot query locales list: %m");

        print_welcome();

        printf("\nAvailable Locales:\n\n");
        r = show_menu(locales, 3, 22, 60);
        if (r < 0)
                return r;

        putchar('\n');

        r = prompt_loop("Please enter system locale name or number", locales, locale_is_valid, &arg_locale);
        if (r < 0)
                return r;

        if (isempty(arg_locale))
                return 0;

        r = prompt_loop("Please enter system message locale name or number", locales, locale_is_valid, &arg_locale_messages);
        if (r < 0)
                return r;

        return 0;
}

static int process_locale(void) {
        const char *etc_localeconf;
        char* locales[3];
        unsigned i = 0;
        int r;

        etc_localeconf = prefix_roota(arg_root, "/etc/locale.conf");
        if (laccess(etc_localeconf, F_OK) >= 0)
                return 0;

        if (arg_copy_locale && arg_root) {

                mkdir_parents(etc_localeconf, 0755);
                r = copy_file("/etc/locale.conf", etc_localeconf, 0, 0644, 0);
                if (r != -ENOENT) {
                        if (r < 0)
                                return log_error_errno(r, "Failed to copy %s: %m", etc_localeconf);

                        log_info("%s copied.", etc_localeconf);
                        return 0;
                }
        }

        r = prompt_locale();
        if (r < 0)
                return r;

        if (!isempty(arg_locale))
                locales[i++] = strjoina("LANG=", arg_locale);
        if (!isempty(arg_locale_messages) && !streq(arg_locale_messages, arg_locale))
                locales[i++] = strjoina("LC_MESSAGES=", arg_locale_messages);

        if (i == 0)
                return 0;

        locales[i] = NULL;

        mkdir_parents(etc_localeconf, 0755);
        r = write_env_file(etc_localeconf, locales);
        if (r < 0)
                return log_error_errno(r, "Failed to write %s: %m", etc_localeconf);

        log_info("%s written.", etc_localeconf);
        return 0;
}

static int prompt_timezone(void) {
        _cleanup_strv_free_ char **zones = NULL;
        int r;

        if (arg_timezone)
                return 0;

        if (!arg_prompt_timezone)
                return 0;

        r = get_timezones(&zones);
        if (r < 0)
                return log_error_errno(r, "Cannot query timezone list: %m");

        print_welcome();

        printf("\nAvailable Time Zones:\n\n");
        r = show_menu(zones, 3, 22, 30);
        if (r < 0)
                return r;

        putchar('\n');

        r = prompt_loop("Please enter timezone name or number", zones, timezone_is_valid, &arg_timezone);
        if (r < 0)
                return r;

        return 0;
}

static int process_timezone(void) {
        const char *etc_localtime, *e;
        int r;

        etc_localtime = prefix_roota(arg_root, "/etc/localtime");
        if (laccess(etc_localtime, F_OK) >= 0)
                return 0;

        if (arg_copy_timezone && arg_root) {
                _cleanup_free_ char *p = NULL;

                r = readlink_malloc("/etc/localtime", &p);
                if (r != -ENOENT) {
                        if (r < 0)
                                return log_error_errno(r, "Failed to read host timezone: %m");

                        mkdir_parents(etc_localtime, 0755);
                        if (symlink(p, etc_localtime) < 0)
                                return log_error_errno(errno, "Failed to create %s symlink: %m", etc_localtime);

                        log_info("%s copied.", etc_localtime);
                        return 0;
                }
        }

        r = prompt_timezone();
        if (r < 0)
                return r;

        if (isempty(arg_timezone))
                return 0;

        e = strjoina("../usr/share/zoneinfo/", arg_timezone);

        mkdir_parents(etc_localtime, 0755);
        if (symlink(e, etc_localtime) < 0)
                return log_error_errno(errno, "Failed to create %s symlink: %m", etc_localtime);

        log_info("%s written", etc_localtime);
        return 0;
}

static int prompt_hostname(void) {
        int r;

        if (arg_hostname)
                return 0;

        if (!arg_prompt_hostname)
                return 0;

        print_welcome();
        putchar('\n');

        for (;;) {
                _cleanup_free_ char *h = NULL;

                r = ask_string(&h, "%s Please enter hostname for new system (empty to skip): ", special_glyph(TRIANGULAR_BULLET));
                if (r < 0)
                        return log_error_errno(r, "Failed to query hostname: %m");

                if (isempty(h)) {
                        log_warning("No hostname entered, skipping.");
                        break;
                }

                if (!hostname_is_valid(h, true)) {
                        log_error("Specified hostname invalid.");
                        continue;
                }

                /* Get rid of the trailing dot that we allow, but don't want to see */
                arg_hostname = hostname_cleanup(h);
                h = NULL;
                break;
        }

        return 0;
}

static int process_hostname(void) {
        const char *etc_hostname;
        int r;

        etc_hostname = prefix_roota(arg_root, "/etc/hostname");
        if (laccess(etc_hostname, F_OK) >= 0)
                return 0;

        r = prompt_hostname();
        if (r < 0)
                return r;

        if (isempty(arg_hostname))
                return 0;

        mkdir_parents(etc_hostname, 0755);
        r = write_string_file(etc_hostname, arg_hostname, WRITE_STRING_FILE_CREATE);
        if (r < 0)
                return log_error_errno(r, "Failed to write %s: %m", etc_hostname);

        log_info("%s written.", etc_hostname);
        return 0;
}

static int process_machine_id(void) {
        const char *etc_machine_id;
        char id[SD_ID128_STRING_MAX];
        int r;

        etc_machine_id = prefix_roota(arg_root, "/etc/machine-id");
        if (laccess(etc_machine_id, F_OK) >= 0)
                return 0;

        if (sd_id128_equal(arg_machine_id, SD_ID128_NULL))
                return 0;

        mkdir_parents(etc_machine_id, 0755);
        r = write_string_file(etc_machine_id, sd_id128_to_string(arg_machine_id, id), WRITE_STRING_FILE_CREATE);
        if (r < 0)
                return log_error_errno(r, "Failed to write machine id: %m");

        log_info("%s written.", etc_machine_id);
        return 0;
}

static int prompt_root_password(void) {
        const char *msg1, *msg2, *etc_shadow;
        int r;

        if (arg_root_password)
                return 0;

        if (!arg_prompt_root_password)
                return 0;

        etc_shadow = prefix_roota(arg_root, "/etc/shadow");
        if (laccess(etc_shadow, F_OK) >= 0)
                return 0;

        print_welcome();
        putchar('\n');

        msg1 = strjoina(special_glyph(TRIANGULAR_BULLET), " Please enter a new root password (empty to skip): ");
        msg2 = strjoina(special_glyph(TRIANGULAR_BULLET), " Please enter new root password again: ");

        for (;;) {
                _cleanup_string_free_erase_ char *a = NULL, *b = NULL;

                r = ask_password_tty(msg1, NULL, 0, 0, NULL, &a);
                if (r < 0)
                        return log_error_errno(r, "Failed to query root password: %m");

                if (isempty(a)) {
                        log_warning("No password entered, skipping.");
                        break;
                }

                r = ask_password_tty(msg2, NULL, 0, 0, NULL, &b);
                if (r < 0)
                        return log_error_errno(r, "Failed to query root password: %m");

                if (!streq(a, b)) {
                        log_error("Entered passwords did not match, please try again.");
                        continue;
                }

                arg_root_password = a;
                a = NULL;
                break;
        }

        return 0;
}

static int write_root_shadow(const char *path, const struct spwd *p) {
        _cleanup_fclose_ FILE *f = NULL;
        assert(path);
        assert(p);

        RUN_WITH_UMASK(0777)
                f = fopen(path, "wex");
        if (!f)
                return -errno;

        errno = 0;
        if (putspent(p, f) != 0)
                return errno > 0 ? -errno : -EIO;

        return fflush_and_check(f);
}

static int process_root_password(void) {

        static const char table[] =
                "abcdefghijklmnopqrstuvwxyz"
                "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
                "0123456789"
                "./";

        struct spwd item = {
                .sp_namp = (char*) "root",
                .sp_min = -1,
                .sp_max = -1,
                .sp_warn = -1,
                .sp_inact = -1,
                .sp_expire = -1,
                .sp_flag = (unsigned long) -1, /* this appears to be what everybody does ... */
        };

        _cleanup_close_ int lock = -1;
        char salt[3+16+1+1];
        uint8_t raw[16];
        unsigned i;
        char *j;

        const char *etc_shadow;
        int r;

        etc_shadow = prefix_roota(arg_root, "/etc/shadow");
        if (laccess(etc_shadow, F_OK) >= 0)
                return 0;

        mkdir_parents(etc_shadow, 0755);

        lock = take_etc_passwd_lock(arg_root);
        if (lock < 0)
                return log_error_errno(lock, "Failed to take a lock: %m");

        if (arg_copy_root_password && arg_root) {
                struct spwd *p;

                errno = 0;
                p = getspnam("root");
                if (p || errno != ENOENT) {
                        if (!p) {
                                if (!errno)
                                        errno = EIO;

                                return log_error_errno(errno, "Failed to find shadow entry for root: %m");
                        }

                        r = write_root_shadow(etc_shadow, p);
                        if (r < 0)
                                return log_error_errno(r, "Failed to write %s: %m", etc_shadow);

                        log_info("%s copied.", etc_shadow);
                        return 0;
                }
        }

        r = prompt_root_password();
        if (r < 0)
                return r;

        if (!arg_root_password)
                return 0;

        r = dev_urandom(raw, 16);
        if (r < 0)
                return log_error_errno(r, "Failed to get salt: %m");

        /* We only bother with SHA512 hashed passwords, the rest is legacy, and we don't do legacy. */
        assert_cc(sizeof(table) == 64 + 1);
        j = stpcpy(salt, "$6$");
        for (i = 0; i < 16; i++)
                j[i] = table[raw[i] & 63];
        j[i++] = '$';
        j[i] = 0;

        errno = 0;
        item.sp_pwdp = crypt(arg_root_password, salt);
        if (!item.sp_pwdp) {
                if (!errno)
                        errno = EINVAL;

                return log_error_errno(errno, "Failed to encrypt password: %m");
        }

        item.sp_lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY);

        r = write_root_shadow(etc_shadow, &item);
        if (r < 0)
                return log_error_errno(r, "Failed to write %s: %m", etc_shadow);

        log_info("%s written.", etc_shadow);
        return 0;
}

static void help(void) {
        printf("%s [OPTIONS...]\n\n"
               "Configures basic settings of the system.\n\n"
               "  -h --help                    Show this help\n"
               "     --version                 Show package version\n"
               "     --root=PATH               Operate on an alternate filesystem root\n"
               "     --locale=LOCALE           Set primary locale (LANG=)\n"
               "     --locale-messages=LOCALE  Set message locale (LC_MESSAGES=)\n"
               "     --timezone=TIMEZONE       Set timezone\n"
               "     --hostname=NAME           Set host name\n"
               "     --machine-ID=ID           Set machine ID\n"
               "     --root-password=PASSWORD  Set root password\n"
               "     --root-password-file=FILE Set root password from file\n"
               "     --prompt-locale           Prompt the user for locale settings\n"
               "     --prompt-timezone         Prompt the user for timezone\n"
               "     --prompt-hostname         Prompt the user for hostname\n"
               "     --prompt-root-password    Prompt the user for root password\n"
               "     --prompt                  Prompt for all of the above\n"
               "     --copy-locale             Copy locale from host\n"
               "     --copy-timezone           Copy timezone from host\n"
               "     --copy-root-password      Copy root password from host\n"
               "     --copy                    Copy locale, timezone, root password\n"
               "     --setup-machine-id        Generate a new random machine ID\n"
               , program_invocation_short_name);
}

static int parse_argv(int argc, char *argv[]) {

        enum {
                ARG_VERSION = 0x100,
                ARG_ROOT,
                ARG_LOCALE,
                ARG_LOCALE_MESSAGES,
                ARG_TIMEZONE,
                ARG_HOSTNAME,
                ARG_MACHINE_ID,
                ARG_ROOT_PASSWORD,
                ARG_ROOT_PASSWORD_FILE,
                ARG_PROMPT,
                ARG_PROMPT_LOCALE,
                ARG_PROMPT_TIMEZONE,
                ARG_PROMPT_HOSTNAME,
                ARG_PROMPT_ROOT_PASSWORD,
                ARG_COPY,
                ARG_COPY_LOCALE,
                ARG_COPY_TIMEZONE,
                ARG_COPY_ROOT_PASSWORD,
                ARG_SETUP_MACHINE_ID,
        };

        static const struct option options[] = {
                { "help",                 no_argument,       NULL, 'h'                      },
                { "version",              no_argument,       NULL, ARG_VERSION              },
                { "root",                 required_argument, NULL, ARG_ROOT                 },
                { "locale",               required_argument, NULL, ARG_LOCALE               },
                { "locale-messages",      required_argument, NULL, ARG_LOCALE_MESSAGES      },
                { "timezone",             required_argument, NULL, ARG_TIMEZONE             },
                { "hostname",             required_argument, NULL, ARG_HOSTNAME             },
                { "machine-id",           required_argument, NULL, ARG_MACHINE_ID           },
                { "root-password",        required_argument, NULL, ARG_ROOT_PASSWORD        },
                { "root-password-file",   required_argument, NULL, ARG_ROOT_PASSWORD_FILE   },
                { "prompt",               no_argument,       NULL, ARG_PROMPT               },
                { "prompt-locale",        no_argument,       NULL, ARG_PROMPT_LOCALE        },
                { "prompt-timezone",      no_argument,       NULL, ARG_PROMPT_TIMEZONE      },
                { "prompt-hostname",      no_argument,       NULL, ARG_PROMPT_HOSTNAME      },
                { "prompt-root-password", no_argument,       NULL, ARG_PROMPT_ROOT_PASSWORD },
                { "copy",                 no_argument,       NULL, ARG_COPY                 },
                { "copy-locale",          no_argument,       NULL, ARG_COPY_LOCALE          },
                { "copy-timezone",        no_argument,       NULL, ARG_COPY_TIMEZONE        },
                { "copy-root-password",   no_argument,       NULL, ARG_COPY_ROOT_PASSWORD   },
                { "setup-machine-id",     no_argument,       NULL, ARG_SETUP_MACHINE_ID     },
                {}
        };

        int r, c;

        assert(argc >= 0);
        assert(argv);

        while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)

                switch (c) {

                case 'h':
                        help();
                        return 0;

                case ARG_VERSION:
                        return version();

                case ARG_ROOT:
                        r = parse_path_argument_and_warn(optarg, true, &arg_root);
                        if (r < 0)
                                return r;
                        break;

                case ARG_LOCALE:
                        if (!locale_is_valid(optarg)) {
                                log_error("Locale %s is not valid.", optarg);
                                return -EINVAL;
                        }

                        r = free_and_strdup(&arg_locale, optarg);
                        if (r < 0)
                                return log_oom();

                        break;

                case ARG_LOCALE_MESSAGES:
                        if (!locale_is_valid(optarg)) {
                                log_error("Locale %s is not valid.", optarg);
                                return -EINVAL;
                        }

                        r = free_and_strdup(&arg_locale_messages, optarg);
                        if (r < 0)
                                return log_oom();

                        break;

                case ARG_TIMEZONE:
                        if (!timezone_is_valid(optarg)) {
                                log_error("Timezone %s is not valid.", optarg);
                                return -EINVAL;
                        }

                        r = free_and_strdup(&arg_timezone, optarg);
                        if (r < 0)
                                return log_oom();

                        break;

                case ARG_ROOT_PASSWORD:
                        r = free_and_strdup(&arg_root_password, optarg);
                        if (r < 0)
                                return log_oom();
                        break;

                case ARG_ROOT_PASSWORD_FILE:
                        arg_root_password = mfree(arg_root_password);

                        r = read_one_line_file(optarg, &arg_root_password);
                        if (r < 0)
                                return log_error_errno(r, "Failed to read %s: %m", optarg);

                        break;

                case ARG_HOSTNAME:
                        if (!hostname_is_valid(optarg, true)) {
                                log_error("Host name %s is not valid.", optarg);
                                return -EINVAL;
                        }

                        hostname_cleanup(optarg);
                        r = free_and_strdup(&arg_hostname, optarg);
                        if (r < 0)
                                return log_oom();

                        break;

                case ARG_MACHINE_ID:
                        if (sd_id128_from_string(optarg, &arg_machine_id) < 0) {
                                log_error("Failed to parse machine id %s.", optarg);
                                return -EINVAL;
                        }

                        break;

                case ARG_PROMPT:
                        arg_prompt_locale = arg_prompt_timezone = arg_prompt_hostname = arg_prompt_root_password = true;
                        break;

                case ARG_PROMPT_LOCALE:
                        arg_prompt_locale = true;
                        break;

                case ARG_PROMPT_TIMEZONE:
                        arg_prompt_timezone = true;
                        break;

                case ARG_PROMPT_HOSTNAME:
                        arg_prompt_hostname = true;
                        break;

                case ARG_PROMPT_ROOT_PASSWORD:
                        arg_prompt_root_password = true;
                        break;

                case ARG_COPY:
                        arg_copy_locale = arg_copy_timezone = arg_copy_root_password = true;
                        break;

                case ARG_COPY_LOCALE:
                        arg_copy_locale = true;
                        break;

                case ARG_COPY_TIMEZONE:
                        arg_copy_timezone = true;
                        break;

                case ARG_COPY_ROOT_PASSWORD:
                        arg_copy_root_password = true;
                        break;

                case ARG_SETUP_MACHINE_ID:

                        r = sd_id128_randomize(&arg_machine_id);
                        if (r < 0)
                                return log_error_errno(r, "Failed to generate randomized machine ID: %m");

                        break;

                case '?':
                        return -EINVAL;

                default:
                        assert_not_reached("Unhandled option");
                }

        return 1;
}

int main(int argc, char *argv[]) {
        int r;

        r = parse_argv(argc, argv);
        if (r <= 0)
                goto finish;

        log_set_target(LOG_TARGET_AUTO);
        log_parse_environment();
        log_open();

        umask(0022);

        r = process_locale();
        if (r < 0)
                goto finish;

        r = process_timezone();
        if (r < 0)
                goto finish;

        r = process_hostname();
        if (r < 0)
                goto finish;

        r = process_machine_id();
        if (r < 0)
                goto finish;

        r = process_root_password();
        if (r < 0)
                goto finish;

finish:
        free(arg_root);
        free(arg_locale);
        free(arg_locale_messages);
        free(arg_timezone);
        free(arg_hostname);
        string_erase(arg_root_password);
        free(arg_root_password);

        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}