1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2014 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
33 #include "time-util.h"
34 #include "path-util.h"
35 #include "locale-util.h"
36 #include "ask-password-api.h"
38 static char *arg_root = NULL;
39 static char *arg_locale = NULL; /* $LANG */
40 static char *arg_locale_messages = NULL; /* $LC_MESSAGES */
41 static char *arg_timezone = NULL;
42 static char *arg_hostname = NULL;
43 static sd_id128_t arg_machine_id = {};
44 static char *arg_root_password = NULL;
45 static bool arg_prompt_locale = false;
46 static bool arg_prompt_timezone = false;
47 static bool arg_prompt_hostname = false;
48 static bool arg_prompt_root_password = false;
49 static bool arg_copy_locale = false;
50 static bool arg_copy_timezone = false;
51 static bool arg_copy_root_password = false;
53 #define prefix_roota(p) (arg_root ? (const char*) strappenda(arg_root, p) : (const char*) p)
55 static void clear_string(char *x) {
60 /* A delicious drop of snake-oil! */
61 memset(x, 'x', strlen(x));
64 static bool press_any_key(void) {
68 printf("-- Press any key to proceed --");
71 (void) read_one_char(stdin, &k, USEC_INFINITY, &need_nl);
79 static void print_welcome(void) {
80 _cleanup_free_ char *pretty_name = NULL;
81 const char *os_release = NULL;
82 static bool done = false;
88 os_release = prefix_roota("/etc/os-release");
89 r = parse_env_file(os_release, NEWLINE,
90 "PRETTY_NAME", &pretty_name,
94 os_release = prefix_roota("/usr/lib/os-release");
95 r = parse_env_file(os_release, NEWLINE,
96 "PRETTY_NAME", &pretty_name,
100 if (r < 0 && r != -ENOENT)
101 log_warning_errno(r, "Failed to read os-release file: %m");
103 printf("\nWelcome to your new installation of %s!\nPlease configure a few basic system settings:\n\n",
104 isempty(pretty_name) ? "Linux" : pretty_name);
111 static int show_menu(char **x, unsigned n_columns, unsigned width, unsigned percentage) {
112 unsigned n, per_column, i, j;
113 unsigned break_lines, break_modulo;
115 assert(n_columns > 0);
118 per_column = (n + n_columns - 1) / n_columns;
120 break_lines = lines();
124 /* The first page gets two extra lines, since we want to show
126 break_modulo = break_lines;
127 if (break_modulo > 3)
130 for (i = 0; i < per_column; i++) {
132 for (j = 0; j < n_columns; j ++) {
133 _cleanup_free_ char *e = NULL;
135 if (j * per_column + i >= n)
138 e = ellipsize(x[j * per_column + i], width, percentage);
142 printf("%4u) %-*s", j * per_column + i + 1, width, e);
147 /* on the first screen we reserve 2 extra lines for the title */
148 if (i % break_lines == break_modulo) {
149 if (!press_any_key())
157 static int prompt_loop(const char *text, char **l, bool (*is_valid)(const char *name), char **ret) {
165 _cleanup_free_ char *p = NULL;
168 r = ask_string(&p, "%s %s (empty to skip): ", draw_special_char(DRAW_TRIANGULAR_BULLET), text);
170 return log_error_errno(r, "Failed to query user: %m");
173 log_warning("No data entered, skipping.");
177 r = safe_atou(p, &u);
181 if (u <= 0 || u > strv_length(l)) {
182 log_error("Specified entry number out of range.");
186 log_info("Selected '%s'.", l[u-1]);
198 log_error("Entered data invalid.");
209 static int prompt_locale(void) {
210 _cleanup_strv_free_ char **locales = NULL;
213 if (arg_locale || arg_locale_messages)
216 if (!arg_prompt_locale)
219 r = get_locales(&locales);
221 return log_error_errno(r, "Cannot query locales list: %m");
225 printf("\nAvailable Locales:\n\n");
226 r = show_menu(locales, 3, 22, 60);
232 r = prompt_loop("Please enter system locale name or number", locales, locale_is_valid, &arg_locale);
236 if (isempty(arg_locale))
239 r = prompt_loop("Please enter system message locale name or number", locales, locale_is_valid, &arg_locale_messages);
246 static int process_locale(void) {
247 const char *etc_localeconf;
252 etc_localeconf = prefix_roota("/etc/locale.conf");
253 if (faccessat(AT_FDCWD, etc_localeconf, F_OK, AT_SYMLINK_NOFOLLOW) >= 0)
256 if (arg_copy_locale && arg_root) {
258 mkdir_parents(etc_localeconf, 0755);
259 r = copy_file("/etc/locale.conf", etc_localeconf, 0, 0644);
262 return log_error_errno(r, "Failed to copy %s: %m", etc_localeconf);
264 log_info("%s copied.", etc_localeconf);
273 if (!isempty(arg_locale))
274 locales[i++] = strappenda("LANG=", arg_locale);
275 if (!isempty(arg_locale_messages) && !streq(arg_locale_messages, arg_locale))
276 locales[i++] = strappenda("LC_MESSAGES=", arg_locale_messages);
283 mkdir_parents(etc_localeconf, 0755);
284 r = write_env_file(etc_localeconf, locales);
286 return log_error_errno(r, "Failed to write %s: %m", etc_localeconf);
288 log_info("%s written.", etc_localeconf);
292 static int prompt_timezone(void) {
293 _cleanup_strv_free_ char **zones = NULL;
299 if (!arg_prompt_timezone)
302 r = get_timezones(&zones);
304 return log_error_errno(r, "Cannot query timezone list: %m");
308 printf("\nAvailable Time Zones:\n\n");
309 r = show_menu(zones, 3, 22, 30);
315 r = prompt_loop("Please enter timezone name or number", zones, timezone_is_valid, &arg_timezone);
322 static int process_timezone(void) {
323 const char *etc_localtime, *e;
326 etc_localtime = prefix_roota("/etc/localtime");
327 if (faccessat(AT_FDCWD, etc_localtime, F_OK, AT_SYMLINK_NOFOLLOW) >= 0)
330 if (arg_copy_timezone && arg_root) {
331 _cleanup_free_ char *p = NULL;
333 r = readlink_malloc("/etc/localtime", &p);
336 return log_error_errno(r, "Failed to read host timezone: %m");
338 mkdir_parents(etc_localtime, 0755);
339 if (symlink(p, etc_localtime) < 0) {
340 log_error("Failed to create %s symlink: %m", etc_localtime);
344 log_info("%s copied.", etc_localtime);
349 r = prompt_timezone();
353 if (isempty(arg_timezone))
356 e = strappenda("../usr/share/zoneinfo/", arg_timezone);
358 mkdir_parents(etc_localtime, 0755);
359 if (symlink(e, etc_localtime) < 0) {
360 log_error("Failed to create %s symlink: %m", etc_localtime);
364 log_info("%s written", etc_localtime);
368 static int prompt_hostname(void) {
374 if (!arg_prompt_hostname)
381 _cleanup_free_ char *h = NULL;
383 r = ask_string(&h, "%s Please enter hostname for new system (empty to skip): ", draw_special_char(DRAW_TRIANGULAR_BULLET));
385 return log_error_errno(r, "Failed to query hostname: %m");
388 log_warning("No hostname entered, skipping.");
392 if (!hostname_is_valid(h)) {
393 log_error("Specified hostname invalid.");
405 static int process_hostname(void) {
406 const char *etc_hostname;
409 etc_hostname = prefix_roota("/etc/hostname");
410 if (faccessat(AT_FDCWD, etc_hostname, F_OK, AT_SYMLINK_NOFOLLOW) >= 0)
413 r = prompt_hostname();
417 if (isempty(arg_hostname))
420 mkdir_parents(etc_hostname, 0755);
421 r = write_string_file(etc_hostname, arg_hostname);
423 return log_error_errno(r, "Failed to write %s: %m", etc_hostname);
425 log_info("%s written.", etc_hostname);
429 static int process_machine_id(void) {
430 const char *etc_machine_id;
431 char id[SD_ID128_STRING_MAX];
434 etc_machine_id = prefix_roota("/etc/machine-id");
435 if (faccessat(AT_FDCWD, etc_machine_id, F_OK, AT_SYMLINK_NOFOLLOW) >= 0)
438 if (sd_id128_equal(arg_machine_id, SD_ID128_NULL))
441 mkdir_parents(etc_machine_id, 0755);
442 r = write_string_file(etc_machine_id, sd_id128_to_string(arg_machine_id, id));
444 return log_error_errno(r, "Failed to write machine id: %m");
446 log_info("%s written.", etc_machine_id);
450 static int prompt_root_password(void) {
451 const char *msg1, *msg2, *etc_shadow;
454 if (arg_root_password)
457 if (!arg_prompt_root_password)
460 etc_shadow = prefix_roota("/etc/shadow");
461 if (faccessat(AT_FDCWD, etc_shadow, F_OK, AT_SYMLINK_NOFOLLOW) >= 0)
467 msg1 = strappenda(draw_special_char(DRAW_TRIANGULAR_BULLET), " Please enter a new root password (empty to skip): ");
468 msg2 = strappenda(draw_special_char(DRAW_TRIANGULAR_BULLET), " Please enter new root password again: ");
471 _cleanup_free_ char *a = NULL, *b = NULL;
473 r = ask_password_tty(msg1, 0, false, NULL, &a);
475 return log_error_errno(r, "Failed to query root password: %m");
478 log_warning("No password entered, skipping.");
482 r = ask_password_tty(msg2, 0, false, NULL, &b);
484 log_error_errno(r, "Failed to query root password: %m");
490 log_error("Entered passwords did not match, please try again.");
497 arg_root_password = a;
505 static int write_root_shadow(const char *path, const struct spwd *p) {
506 _cleanup_fclose_ FILE *f = NULL;
511 f = fopen(path, "wex");
516 if (putspent(p, f) != 0)
517 return errno ? -errno : -EIO;
519 return fflush_and_check(f);
522 static int process_root_password(void) {
524 static const char table[] =
525 "abcdefghijklmnopqrstuvwxyz"
526 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
531 .sp_namp = (char*) "root",
537 .sp_flag = (unsigned long) -1, /* this appears to be what everybody does ... */
540 _cleanup_close_ int lock = -1;
546 const char *etc_shadow;
549 etc_shadow = prefix_roota("/etc/shadow");
550 if (faccessat(AT_FDCWD, etc_shadow, F_OK, AT_SYMLINK_NOFOLLOW) >= 0)
553 mkdir_parents(etc_shadow, 0755);
555 lock = take_password_lock(arg_root);
559 if (arg_copy_root_password && arg_root) {
563 p = getspnam("root");
564 if (p || errno != ENOENT) {
569 log_error("Failed to find shadow entry for root: %m");
573 r = write_root_shadow(etc_shadow, p);
575 return log_error_errno(r, "Failed to write %s: %m", etc_shadow);
577 log_info("%s copied.", etc_shadow);
582 r = prompt_root_password();
586 if (!arg_root_password)
589 r = dev_urandom(raw, 16);
591 return log_error_errno(r, "Failed to get salt: %m");
593 /* We only bother with SHA512 hashed passwords, the rest is legacy, and we don't do legacy. */
594 assert_cc(sizeof(table) == 64 + 1);
595 j = stpcpy(salt, "$6$");
596 for (i = 0; i < 16; i++)
597 j[i] = table[raw[i] & 63];
602 item.sp_pwdp = crypt(arg_root_password, salt);
607 log_error("Failed to encrypt password: %m");
611 item.sp_lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY);
613 r = write_root_shadow(etc_shadow, &item);
615 return log_error_errno(r, "Failed to write %s: %m", etc_shadow);
617 log_info("%s written.", etc_shadow);
621 static void help(void) {
622 printf("%s [OPTIONS...]\n\n"
623 "Configures basic settings of the system.\n\n"
624 " -h --help Show this help\n"
625 " --version Show package version\n"
626 " --root=PATH Operate on an alternate filesystem root\n"
627 " --locale=LOCALE Set primary locale (LANG=)\n"
628 " --locale-messages=LOCALE Set message locale (LC_MESSAGES=)\n"
629 " --timezone=TIMEZONE Set timezone\n"
630 " --hostname=NAME Set host name\n"
631 " --machine-ID=ID Set machine ID\n"
632 " --root-password=PASSWORD Set root password\n"
633 " --root-password-file=FILE Set root password from file\n"
634 " --prompt-locale Prompt the user for locale settings\n"
635 " --prompt-timezone Prompt the user for timezone\n"
636 " --prompt-hostname Prompt the user for hostname\n"
637 " --prompt-root-password Prompt the user for root password\n"
638 " --prompt Prompt for locale, timezone, hostname, root password\n"
639 " --copy-locale Copy locale from host\n"
640 " --copy-timezone Copy timezone from host\n"
641 " --copy-root-password Copy root password from host\n"
642 " --copy Copy locale, timezone, root password\n"
643 " --setup-machine-id Generate a new random machine ID\n"
644 , program_invocation_short_name);
647 static int parse_argv(int argc, char *argv[]) {
658 ARG_ROOT_PASSWORD_FILE,
663 ARG_PROMPT_ROOT_PASSWORD,
667 ARG_COPY_ROOT_PASSWORD,
668 ARG_SETUP_MACHINE_ID,
671 static const struct option options[] = {
672 { "help", no_argument, NULL, 'h' },
673 { "version", no_argument, NULL, ARG_VERSION },
674 { "root", required_argument, NULL, ARG_ROOT },
675 { "locale", required_argument, NULL, ARG_LOCALE },
676 { "locale-messages", required_argument, NULL, ARG_LOCALE_MESSAGES },
677 { "timezone", required_argument, NULL, ARG_TIMEZONE },
678 { "hostname", required_argument, NULL, ARG_HOSTNAME },
679 { "machine-id", required_argument, NULL, ARG_MACHINE_ID },
680 { "root-password", required_argument, NULL, ARG_ROOT_PASSWORD },
681 { "root-password-file", required_argument, NULL, ARG_ROOT_PASSWORD_FILE },
682 { "prompt", no_argument, NULL, ARG_PROMPT },
683 { "prompt-locale", no_argument, NULL, ARG_PROMPT_LOCALE },
684 { "prompt-timezone", no_argument, NULL, ARG_PROMPT_TIMEZONE },
685 { "prompt-hostname", no_argument, NULL, ARG_PROMPT_HOSTNAME },
686 { "prompt-root-password", no_argument, NULL, ARG_PROMPT_ROOT_PASSWORD },
687 { "copy", no_argument, NULL, ARG_COPY },
688 { "copy-locale", no_argument, NULL, ARG_COPY_LOCALE },
689 { "copy-timezone", no_argument, NULL, ARG_COPY_TIMEZONE },
690 { "copy-root-password", no_argument, NULL, ARG_COPY_ROOT_PASSWORD },
691 { "setup-machine-id", no_argument, NULL, ARG_SETUP_MACHINE_ID },
700 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
709 puts(PACKAGE_STRING);
710 puts(SYSTEMD_FEATURES);
715 arg_root = path_make_absolute_cwd(optarg);
719 path_kill_slashes(arg_root);
721 if (path_equal(arg_root, "/")) {
729 if (!locale_is_valid(optarg)) {
730 log_error("Locale %s is not valid.", optarg);
735 arg_locale = strdup(optarg);
741 case ARG_LOCALE_MESSAGES:
742 if (!locale_is_valid(optarg)) {
743 log_error("Locale %s is not valid.", optarg);
747 free(arg_locale_messages);
748 arg_locale_messages = strdup(optarg);
749 if (!arg_locale_messages)
755 if (!timezone_is_valid(optarg)) {
756 log_error("Timezone %s is not valid.", optarg);
761 arg_timezone = strdup(optarg);
767 case ARG_ROOT_PASSWORD:
768 free(arg_root_password);
769 arg_root_password = strdup(optarg);
770 if (!arg_root_password)
775 case ARG_ROOT_PASSWORD_FILE:
776 free(arg_root_password);
777 arg_root_password = NULL;
779 r = read_one_line_file(optarg, &arg_root_password);
781 return log_error_errno(r, "Failed to read %s: %m", optarg);
786 if (!hostname_is_valid(optarg)) {
787 log_error("Host name %s is not valid.", optarg);
792 arg_hostname = strdup(optarg);
799 if (sd_id128_from_string(optarg, &arg_machine_id) < 0) {
800 log_error("Failed to parse machine id %s.", optarg);
807 arg_prompt_locale = arg_prompt_timezone = arg_prompt_hostname = arg_prompt_root_password = true;
810 case ARG_PROMPT_LOCALE:
811 arg_prompt_locale = true;
814 case ARG_PROMPT_TIMEZONE:
815 arg_prompt_timezone = true;
818 case ARG_PROMPT_HOSTNAME:
819 arg_prompt_hostname = true;
822 case ARG_PROMPT_ROOT_PASSWORD:
823 arg_prompt_root_password = true;
827 arg_copy_locale = arg_copy_timezone = arg_copy_root_password = true;
830 case ARG_COPY_LOCALE:
831 arg_copy_locale = true;
834 case ARG_COPY_TIMEZONE:
835 arg_copy_timezone = true;
838 case ARG_COPY_ROOT_PASSWORD:
839 arg_copy_root_password = true;
842 case ARG_SETUP_MACHINE_ID:
844 r = sd_id128_randomize(&arg_machine_id);
846 return log_error_errno(r, "Failed to generate randomized machine ID: %m");
854 assert_not_reached("Unhandled option");
860 int main(int argc, char *argv[]) {
863 r = parse_argv(argc, argv);
867 log_set_target(LOG_TARGET_AUTO);
868 log_parse_environment();
873 r = process_locale();
877 r = process_timezone();
881 r = process_hostname();
885 r = process_machine_id();
889 r = process_root_password();
896 free(arg_locale_messages);
899 clear_string(arg_root_password);
900 free(arg_root_password);
902 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;