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-rw-r--r--src/id128/id128.c285
1 files changed, 285 insertions, 0 deletions
diff --git a/src/id128/id128.c b/src/id128/id128.c
new file mode 100644
index 0000000..d726ab7
--- /dev/null
+++ b/src/id128/id128.c
@@ -0,0 +1,285 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <getopt.h>
+#include <stdio.h>
+
+#include "alloc-util.h"
+#include "build.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 "verbs.h"
+
+static Id128PrettyPrintMode arg_mode = ID128_PRINT_ID128;
+static sd_id128_t arg_app = {};
+static bool arg_value = false;
+
+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) {
+ sd_id128_t u;
+ int r;
+
+ assert(table);
+
+ if (sd_id128_is_null(arg_app))
+ u = uuid;
+ else
+ assert_se(sd_id128_get_app_specific(uuid, arg_app, &u) == 0);
+
+ 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, u);
+ if (r < 0)
+ return r;
+ if (!first)
+ puts("");
+ return 0;
+ }
+
+ if (arg_value)
+ return id128_pretty_print(u, arg_mode);
+
+ 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,
+ u);
+}
+
+static int verb_show(int argc, char **argv, void *userdata) {
+ _cleanup_(table_unrefp) Table *table = NULL;
+ 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 {
+ GptPartitionType type;
+
+ r = gpt_partition_type_from_string(*p, &type);
+ if (r < 0)
+ return log_error_errno(r, "Unknown identifier \"%s\".", *p);
+
+ uuid = type.uuid;
+ 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 128-bit 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|UUID] Print one or more UUIDs\n"
+ " help Show this help\n"
+ "\nOptions:\n"
+ " -h --help Show this help\n"
+ " -p --pretty Generate samples of program code\n"
+ " -P --value Only print the value\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' },
+ { "value", 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:uP", options, NULL)) >= 0)
+ switch (c) {
+
+ case 'h':
+ return help();
+
+ case ARG_VERSION:
+ return version();
+
+ case 'p':
+ arg_mode = ID128_PRINT_PRETTY;
+ arg_value = false;
+ break;
+
+ case 'P':
+ arg_value = true;
+ if (arg_mode == ID128_PRINT_PRETTY)
+ arg_mode = ID128_PRINT_ID128;
+ break;
+
+ case 'a':
+ r = id128_from_string_nonzero(optarg, &arg_app);
+ if (r == -ENXIO)
+ return log_error_errno(r, "Application ID cannot be all zeros.");
+ 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();
+ }
+
+ 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();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ return r;
+
+ return id128_main(argc, argv);
+}
+
+DEFINE_MAIN_FUNCTION(run);