This source file includes following definitions.
- clear_string
- press_any_key
- print_welcome
- show_menu
- prompt_loop
- prompt_locale
- process_locale
- prompt_timezone
- process_timezone
- prompt_hostname
- process_hostname
- process_machine_id
- prompt_root_password
- write_root_shadow
- process_root_password
- help
- parse_argv
- main
#include <fcntl.h>
#include <unistd.h>
#include <getopt.h>
#include <shadow.h>
#include "strv.h"
#include "fileio.h"
#include "copy.h"
#include "build.h"
#include "mkdir.h"
#include "time-util.h"
#include "path-util.h"
#include "locale-util.h"
#include "ask-password-api.h"
static char *arg_root = NULL;
static char *arg_locale = NULL;
static char *arg_locale_messages = NULL;
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;
#define prefix_roota(p) (arg_root ? (const char*) strappenda(arg_root, p) : (const char*) p)
static void clear_string(char *x) {
if (!x)
return;
memset(x, 'x', strlen(x));
}
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("/etc/os-release");
r = parse_env_file(os_release, NEWLINE,
"PRETTY_NAME", &pretty_name,
NULL);
if (r == -ENOENT) {
os_release = prefix_roota("/usr/lib/os-release");
r = parse_env_file(os_release, NEWLINE,
"PRETTY_NAME", &pretty_name,
NULL);
}
if (r < 0 && r != -ENOENT)
log_warning("Failed to read os-release file: %s", strerror(-r));
printf("\nWelcome to your new installation of %s!\nPlease configure a few basic system settings:\n\n",
isempty(pretty_name) ? "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--;
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');
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): ", draw_special_char(DRAW_TRIANGULAR_BULLET), text);
if (r < 0) {
log_error("Failed to query user: %s", strerror(-r));
return r;
}
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) {
log_error("Cannot query locales list: %s", strerror(-r));
return r;
}
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("/etc/locale.conf");
if (faccessat(AT_FDCWD, etc_localeconf, F_OK, AT_SYMLINK_NOFOLLOW) >= 0)
return 0;
if (arg_copy_locale && arg_root) {
mkdir_parents(etc_localeconf, 0755);
r = copy_file("/etc/locale.conf", etc_localeconf, 0, 0644);
if (r != -ENOENT) {
if (r < 0) {
log_error("Failed to copy %s: %s", etc_localeconf, strerror(-r));
return r;
}
log_info("%s copied.", etc_localeconf);
return 0;
}
}
r = prompt_locale();
if (r < 0)
return r;
if (!isempty(arg_locale))
locales[i++] = strappenda("LANG=", arg_locale);
if (!isempty(arg_locale_messages) && !streq(arg_locale_messages, arg_locale))
locales[i++] = strappenda("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) {
log_error("Failed to write %s: %s", etc_localeconf, strerror(-r));
return r;
}
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) {
log_error("Cannot query timezone list: %s", strerror(-r));
return r;
}
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("/etc/localtime");
if (faccessat(AT_FDCWD, etc_localtime, F_OK, AT_SYMLINK_NOFOLLOW) >= 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) {
log_error("Failed to read host timezone: %s", strerror(-r));
return r;
}
mkdir_parents(etc_localtime, 0755);
if (symlink(p, etc_localtime) < 0) {
log_error("Failed to create %s symlink: %m", etc_localtime);
return -errno;
}
log_info("%s copied.", etc_localtime);
return 0;
}
}
r = prompt_timezone();
if (r < 0)
return r;
if (isempty(arg_timezone))
return 0;
e = strappenda("../usr/share/zoneinfo/", arg_timezone);
mkdir_parents(etc_localtime, 0755);
if (symlink(e, etc_localtime) < 0) {
log_error("Failed to create %s symlink: %m", etc_localtime);
return -errno;
}
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): ", draw_special_char(DRAW_TRIANGULAR_BULLET));
if (r < 0) {
log_error("Failed to query hostname: %s", strerror(-r));
return r;
}
if (isempty(h)) {
log_warning("No hostname entered, skipping.");
break;
}
if (!hostname_is_valid(h)) {
log_error("Specified hostname invalid.");
continue;
}
arg_hostname = h;
h = NULL;
break;
}
return 0;
}
static int process_hostname(void) {
const char *etc_hostname;
int r;
etc_hostname = prefix_roota("/etc/hostname");
if (faccessat(AT_FDCWD, etc_hostname, F_OK, AT_SYMLINK_NOFOLLOW) >= 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);
if (r < 0) {
log_error("Failed to write %s: %s", etc_hostname, strerror(-r));
return r;
}
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("/etc/machine-id");
if (faccessat(AT_FDCWD, etc_machine_id, F_OK, AT_SYMLINK_NOFOLLOW) >= 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));
if (r < 0) {
log_error("Failed to write machine id: %s", strerror(-r));
return r;
}
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("/etc/shadow");
if (faccessat(AT_FDCWD, etc_shadow, F_OK, AT_SYMLINK_NOFOLLOW) >= 0)
return 0;
print_welcome();
putchar('\n');
msg1 = strappenda(draw_special_char(DRAW_TRIANGULAR_BULLET), " Please enter a new root password (empty to skip): ");
msg2 = strappenda(draw_special_char(DRAW_TRIANGULAR_BULLET), " Please enter new root password again: ");
for (;;) {
_cleanup_free_ char *a = NULL, *b = NULL;
r = ask_password_tty(msg1, 0, false, NULL, &a);
if (r < 0) {
log_error("Failed to query root password: %s", strerror(-r));
return r;
}
if (isempty(a)) {
log_warning("No password entered, skipping.");
break;
}
r = ask_password_tty(msg2, 0, false, NULL, &b);
if (r < 0) {
log_error("Failed to query root password: %s", strerror(-r));
clear_string(a);
return r;
}
if (!streq(a, b)) {
log_error("Entered passwords did not match, please try again.");
clear_string(a);
clear_string(b);
continue;
}
clear_string(b);
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 ? -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 = 0,
.sp_max = 99999,
.sp_warn = 7,
.sp_inact = -1,
.sp_expire = -1,
.sp_flag = (unsigned long) -1,
};
_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("/etc/shadow");
if (faccessat(AT_FDCWD, etc_shadow, F_OK, AT_SYMLINK_NOFOLLOW) >= 0)
return 0;
mkdir_parents(etc_shadow, 0755);
lock = take_password_lock(arg_root);
if (lock < 0)
return lock;
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;
log_error("Failed to find shadow entry for root: %m");
return -errno;
}
r = write_root_shadow(etc_shadow, p);
if (r < 0) {
log_error("Failed to write %s: %s", etc_shadow, strerror(-r));
return r;
}
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) {
log_error("Failed to get salt: %s", strerror(-r));
return r;
}
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;
log_error("Failed to encrypt password: %m");
return -errno;
}
item.sp_lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY);
r = write_root_shadow(etc_shadow, &item);
if (r < 0) {
log_error("Failed to write %s: %s", etc_shadow, strerror(-r));
return r;
}
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:
puts(PACKAGE_STRING);
puts(SYSTEMD_FEATURES);
return 0;
case ARG_ROOT:
free(arg_root);
arg_root = path_make_absolute_cwd(optarg);
if (!arg_root)
return log_oom();
path_kill_slashes(arg_root);
if (path_equal(arg_root, "/")) {
free(arg_root);
arg_root = NULL;
}
break;
case ARG_LOCALE:
if (!locale_is_valid(optarg)) {
log_error("Locale %s is not valid.", optarg);
return -EINVAL;
}
free(arg_locale);
arg_locale = strdup(optarg);
if (!arg_locale)
return log_oom();
break;
case ARG_LOCALE_MESSAGES:
if (!locale_is_valid(optarg)) {
log_error("Locale %s is not valid.", optarg);
return -EINVAL;
}
free(arg_locale_messages);
arg_locale_messages = strdup(optarg);
if (!arg_locale_messages)
return log_oom();
break;
case ARG_TIMEZONE:
if (!timezone_is_valid(optarg)) {
log_error("Timezone %s is not valid.", optarg);
return -EINVAL;
}
free(arg_timezone);
arg_timezone = strdup(optarg);
if (!arg_timezone)
return log_oom();
break;
case ARG_ROOT_PASSWORD:
free(arg_root_password);
arg_root_password = strdup(optarg);
if (!arg_root_password)
return log_oom();
break;
case ARG_ROOT_PASSWORD_FILE:
free(arg_root_password);
arg_root_password = NULL;
r = read_one_line_file(optarg, &arg_root_password);
if (r < 0) {
log_error("Failed to read %s: %s", optarg, strerror(-r));
return r;
}
break;
case ARG_HOSTNAME:
if (!hostname_is_valid(optarg)) {
log_error("Host name %s is not valid.", optarg);
return -EINVAL;
}
free(arg_hostname);
arg_hostname = strdup(optarg);
if (!arg_hostname)
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) {
log_error("Failed to generate randomized machine ID: %s", strerror(-r));
return r;
}
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);
clear_string(arg_root_password);
free(arg_root_password);
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}