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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2010 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 <errno.h>
#include <getopt.h>
#include <stddef.h>
#include <unistd.h>
#include "ask-password-api.h"
#include "def.h"
#include "log.h"
#include "macro.h"
#include "strv.h"
static const char *arg_icon = NULL;
static const char *arg_id = NULL;
static const char *arg_message = NULL;
static bool arg_echo = false;
static bool arg_use_tty = true;
static usec_t arg_timeout = DEFAULT_TIMEOUT_USEC;
static bool arg_accept_cached = false;
static bool arg_multiple = false;
static void help(void) {
printf("%s [OPTIONS...] MESSAGE\n\n"
"Query the user for a system passphrase, via the TTY or an UI agent.\n\n"
" -h --help Show this help\n"
" --icon=NAME Icon name\n"
" --timeout=SEC Timeout in sec\n"
" --echo Do not mask input (useful for usernames)\n"
" --no-tty Ask question via agent even on TTY\n"
" --accept-cached Accept cached passwords\n"
" --multiple List multiple passwords if available\n"
" --id=ID Query identifier (e.g. cryptsetup:/dev/sda5)\n"
, program_invocation_short_name);
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_ICON = 0x100,
ARG_TIMEOUT,
ARG_ECHO,
ARG_NO_TTY,
ARG_ACCEPT_CACHED,
ARG_MULTIPLE,
ARG_ID
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "icon", required_argument, NULL, ARG_ICON },
{ "timeout", required_argument, NULL, ARG_TIMEOUT },
{ "echo", no_argument, NULL, ARG_ECHO },
{ "no-tty", no_argument, NULL, ARG_NO_TTY },
{ "accept-cached", no_argument, NULL, ARG_ACCEPT_CACHED },
{ "multiple", no_argument, NULL, ARG_MULTIPLE },
{ "id", required_argument, NULL, ARG_ID },
{}
};
int 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_ICON:
arg_icon = optarg;
break;
case ARG_TIMEOUT:
if (parse_sec(optarg, &arg_timeout) < 0) {
log_error("Failed to parse --timeout parameter %s", optarg);
return -EINVAL;
}
break;
case ARG_ECHO:
arg_echo = true;
break;
case ARG_NO_TTY:
arg_use_tty = false;
break;
case ARG_ACCEPT_CACHED:
arg_accept_cached = true;
break;
case ARG_MULTIPLE:
arg_multiple = true;
break;
case ARG_ID:
arg_id = optarg;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
if (optind != argc - 1) {
log_error("%s: required argument missing.", program_invocation_short_name);
return -EINVAL;
}
arg_message = argv[optind];
return 1;
}
int main(int argc, char *argv[]) {
int r;
usec_t timeout;
log_parse_environment();
log_open();
r = parse_argv(argc, argv);
if (r <= 0)
goto finish;
if (arg_timeout > 0)
timeout = now(CLOCK_MONOTONIC) + arg_timeout;
else
timeout = 0;
if (arg_use_tty && isatty(STDIN_FILENO)) {
_cleanup_free_ char *password = NULL;
r = ask_password_tty(arg_message, timeout, arg_echo, NULL, &password);
if (r < 0) {
log_error_errno(r, "Failed to ask for password on terminal: %m");
goto finish;
}
puts(password);
} else {
_cleanup_free_ char **l = NULL;
char **p;
r = ask_password_agent(arg_message, arg_icon, arg_id, timeout, arg_echo, arg_accept_cached, &l);
if (r < 0) {
log_error_errno(r, "Failed to ask for password via agent: %m");
goto finish;
}
STRV_FOREACH(p, l) {
puts(*p);
if (!arg_multiple)
break;
}
}
finish:
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
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