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Diffstat (limited to 'src/systemd-ask-password/ask-password.c')
| -rw-r--r-- | src/systemd-ask-password/ask-password.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/src/systemd-ask-password/ask-password.c b/src/systemd-ask-password/ask-password.c new file mode 100644 index 0000000000..ee29d1c558 --- /dev/null +++ b/src/systemd-ask-password/ask-password.c @@ -0,0 +1,188 @@ +/*** + 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 "systemd-basic/def.h" +#include "systemd-basic/log.h" +#include "systemd-basic/macro.h" +#include "systemd-basic/strv.h" +#include "systemd-shared/ask-password-api.h" + +static const char *arg_icon = NULL; +static const char *arg_id = NULL; +static const char *arg_keyname = NULL; +static char *arg_message = NULL; +static usec_t arg_timeout = DEFAULT_TIMEOUT_USEC; +static bool arg_multiple = false; +static bool arg_no_output = false; +static AskPasswordFlags arg_flags = ASK_PASSWORD_PUSH_CACHE; + +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" + " --id=ID Query identifier (e.g. \"cryptsetup:/dev/sda5\")\n" + " --keyname=NAME Kernel key name for caching passwords (e.g. \"cryptsetup\")\n" + " --timeout=SEC Timeout in seconds\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" + " --no-output Do not print password to standard output\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, + ARG_KEYNAME, + ARG_NO_OUTPUT, + }; + + 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 }, + { "keyname", required_argument, NULL, ARG_KEYNAME }, + { "no-output", no_argument, NULL, ARG_NO_OUTPUT }, + {} + }; + + 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_flags |= ASK_PASSWORD_ECHO; + break; + + case ARG_NO_TTY: + arg_flags |= ASK_PASSWORD_NO_TTY; + break; + + case ARG_ACCEPT_CACHED: + arg_flags |= ASK_PASSWORD_ACCEPT_CACHED; + break; + + case ARG_MULTIPLE: + arg_multiple = true; + break; + + case ARG_ID: + arg_id = optarg; + break; + + case ARG_KEYNAME: + arg_keyname = optarg; + break; + + case ARG_NO_OUTPUT: + arg_no_output = true; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + if (argc > optind) { + arg_message = strv_join(argv + optind, " "); + if (!arg_message) + return log_oom(); + } + + return 1; +} + +int main(int argc, char *argv[]) { + _cleanup_strv_free_erase_ char **l = NULL; + usec_t timeout; + char **p; + int r; + + 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; + + r = ask_password_auto(arg_message, arg_icon, arg_id, arg_keyname, timeout, arg_flags, &l); + if (r < 0) { + log_error_errno(r, "Failed to query password: %m"); + goto finish; + } + + STRV_FOREACH(p, l) { + if (!arg_no_output) + puts(*p); + + if (!arg_multiple) + break; + } + +finish: + free(arg_message); + + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; +} |