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/* SPDX-License-Identifier: LGPL-2.1+ */
#include <getopt.h>
#include <stdio.h>
#include "alloc-util.h"
#include "id128-print.h"
#include "main-func.h"
#include "pretty-print.h"
#include "util.h"
#include "verbs.h"
static bool arg_pretty = false;
static sd_id128_t arg_app = {};
static int verb_new(int argc, char **argv, void *userdata) {
return id128_print_new(arg_pretty);
}
static int verb_machine_id(int argc, char **argv, void *userdata) {
sd_id128_t id;
int r;
if (sd_id128_is_null(arg_app))
r = sd_id128_get_machine(&id);
else
r = sd_id128_get_machine_app_specific(arg_app, &id);
if (r < 0)
return log_error_errno(r, "Failed to get %smachine-ID: %m",
sd_id128_is_null(arg_app) ? "" : "app-specific ");
return id128_pretty_print(id, arg_pretty);
}
static int verb_boot_id(int argc, char **argv, void *userdata) {
sd_id128_t id;
int r;
if (sd_id128_is_null(arg_app))
r = sd_id128_get_boot(&id);
else
r = sd_id128_get_boot_app_specific(arg_app, &id);
if (r < 0)
return log_error_errno(r, "Failed to get %sboot-ID: %m",
sd_id128_is_null(arg_app) ? "" : "app-specific ");
return id128_pretty_print(id, arg_pretty);
}
static int verb_invocation_id(int argc, char **argv, void *userdata) {
sd_id128_t id;
int r;
if (!sd_id128_is_null(arg_app))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Verb \"invocation-id\" cannot be combined with --app-specific=.");
r = sd_id128_get_invocation(&id);
if (r < 0)
return log_error_errno(r, "Failed to get invocation-ID: %m");
return id128_pretty_print(id, arg_pretty);
}
static int help(void) {
_cleanup_free_ char *link = NULL;
int r;
r = terminal_urlify_man("systemd-id128", "1", &link);
if (r < 0)
return log_oom();
printf("%s [OPTIONS...] {COMMAND} ...\n\n"
"Generate and print id128 strings.\n\n"
" -h --help Show this help\n"
" -p --pretty Generate samples of program code\n"
" -a --app-specific=ID Generate app-specific IDs\n"
"\nCommands:\n"
" new Generate a new id128 string\n"
" machine-id Print the ID of current machine\n"
" boot-id Print the ID of current boot\n"
" invocation-id Print the ID of current invocation\n"
" help Show this help\n"
"\nSee the %s for details.\n"
, program_invocation_short_name
, link
);
return 0;
}
static int verb_help(int argc, char **argv, void *userdata) {
return help();
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "app-specific", required_argument, NULL, 'a' },
{},
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "hpa:", options, NULL)) >= 0)
switch (c) {
case 'h':
return help();
case ARG_VERSION:
return version();
case 'p':
arg_pretty = true;
break;
case 'a':
r = sd_id128_from_string(optarg, &arg_app);
if (r < 0)
return log_error_errno(r, "Failed to parse \"%s\" as application-ID: %m", optarg);
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
return 1;
}
static int id128_main(int argc, char *argv[]) {
static const Verb verbs[] = {
{ "new", VERB_ANY, 1, 0, verb_new },
{ "machine-id", VERB_ANY, 1, 0, verb_machine_id },
{ "boot-id", VERB_ANY, 1, 0, verb_boot_id },
{ "invocation-id", VERB_ANY, 1, 0, verb_invocation_id },
{ "help", VERB_ANY, VERB_ANY, 0, verb_help },
{}
};
return dispatch_verb(argc, argv, verbs, NULL);
}
static int run(int argc, char *argv[]) {
int r;
log_parse_environment();
log_open();
r = parse_argv(argc, argv);
if (r <= 0)
return r;
return id128_main(argc, argv);
}
DEFINE_MAIN_FUNCTION(run);
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