summaryrefslogtreecommitdiffstats
path: root/src/id128
diff options
context:
space:
mode:
Diffstat (limited to 'src/id128')
-rw-r--r--src/id128/id128.c168
1 files changed, 168 insertions, 0 deletions
diff --git a/src/id128/id128.c b/src/id128/id128.c
new file mode 100644
index 0000000..06049e7
--- /dev/null
+++ b/src/id128/id128.c
@@ -0,0 +1,168 @@
+/* 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);