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/* SPDX-License-Identifier: LGPL-2.1+ */
#include <getopt.h>
#include <stdio.h>
#include "alloc-util.h"
#include "gpt.h"
#include "id128-print.h"
#include "main-func.h"
#include "pretty-print.h"
#include "strv.h"
#include "format-table.h"
#include "terminal-util.h"
#include "util.h"
#include "verbs.h"
static Id128PrettyPrintMode arg_mode = ID128_PRINT_ID128;
static sd_id128_t arg_app = {};
static int verb_new(int argc, char **argv, void *userdata) {
return id128_print_new(arg_mode);
}
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_mode);
}
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_mode);
}
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_mode);
}
static int show_one(Table **table, const char *name, sd_id128_t uuid, bool first) {
int r;
if (arg_mode == ID128_PRINT_PRETTY) {
_cleanup_free_ char *id = NULL;
id = strreplace(name, "-", "_");
if (!id)
return log_oom();
ascii_strupper(id);
r = id128_pretty_print_sample(id, uuid);
if (r < 0)
return r;
if (!first)
puts("");
return 0;
} else {
if (!*table) {
*table = table_new("name", "id");
if (!*table)
return log_oom();
table_set_width(*table, 0);
}
return table_add_many(*table,
TABLE_STRING, name,
arg_mode == ID128_PRINT_ID128 ? TABLE_ID128 : TABLE_UUID,
uuid);
}
}
static int verb_show(int argc, char **argv, void *userdata) {
_cleanup_(table_unrefp) Table *table = NULL;
char **p;
int r;
argv = strv_skip(argv, 1);
if (strv_isempty(argv))
for (const GptPartitionType *e = gpt_partition_type_table; e->name; e++) {
r = show_one(&table, e->name, e->uuid, e == gpt_partition_type_table);
if (r < 0)
return r;
}
else
STRV_FOREACH(p, argv) {
sd_id128_t uuid;
bool have_uuid;
const char *id;
/* Check if the argument is an actual UUID first */
have_uuid = sd_id128_from_string(*p, &uuid) >= 0;
if (have_uuid)
id = gpt_partition_type_uuid_to_string(uuid) ?: "XYZ";
else {
r = gpt_partition_type_uuid_from_string(*p, &uuid);
if (r < 0)
return log_error_errno(r, "Unknown identifier \"%s\".", *p);
id = *p;
}
r = show_one(&table, id, uuid, p == argv);
if (r < 0)
return r;
}
if (table) {
r = table_print(table, NULL);
if (r < 0)
return table_log_print_error(r);
}
return 0;
}
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"
"%sGenerate and print 128bit identifiers.%s\n"
"\nCommands:\n"
" new Generate a new ID\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"
" show [NAME] Print one or more well-known IDs\n"
" help Show this help\n"
"\nOptions:\n"
" -h --help Show this help\n"
" -p --pretty Generate samples of program code\n"
" -a --app-specific=ID Generate app-specific IDs\n"
" -u --uuid Output in UUID format\n"
"\nSee the %s for details.\n"
, program_invocation_short_name
, ansi_highlight(), ansi_normal()
, 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 },
{ "pretty", no_argument, NULL, 'p' },
{ "app-specific", required_argument, NULL, 'a' },
{ "uuid", no_argument, NULL, 'u' },
{},
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "hpa:u", options, NULL)) >= 0)
switch (c) {
case 'h':
return help();
case ARG_VERSION:
return version();
case 'p':
arg_mode = ID128_PRINT_PRETTY;
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 'u':
arg_mode = ID128_PRINT_UUID;
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 },
{ "show", VERB_ANY, VERB_ANY, 0, verb_show },
{ "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_setup_cli();
r = parse_argv(argc, argv);
if (r <= 0)
return r;
return id128_main(argc, argv);
}
DEFINE_MAIN_FUNCTION(run);
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