[thirdparty/systemd.git] / src / id128 / id128.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#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);
Commit	Line	Data
db9ecf05	1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
0d1d512f ZJS	2
	3	#include <getopt.h>
	4	#include <stdio.h>
	5
	6	#include "alloc-util.h"
dc972b07	7	#include "gpt.h"
0d1d512f	8	#include "id128-print.h"
5e332028	9	#include "main-func.h"
294bf0c3	10	#include "pretty-print.h"
dc972b07 ZJS	11	#include "strv.h"
dc972b07 ZJS	12	#include "format-table.h"
a19fdd66	13	#include "terminal-util.h"
0d1d512f ZJS	14	#include "util.h"
	15	#include "verbs.h"
	16
a19fdd66	17	static Id128PrettyPrintMode arg_mode = ID128_PRINT_ID128;
206a29b2	18	static sd_id128_t arg_app = {};
0d1d512f ZJS	19
0d1d512f ZJS	20	static int verb_new(int argc, char *argv, void userdata) {
a19fdd66	21	return id128_print_new(arg_mode);
0d1d512f ZJS	22	}
	23
	24	static int verb_machine_id(int argc, char *argv, void userdata) {
	25	sd_id128_t id;
	26	int r;
	27
	28	if (sd_id128_is_null(arg_app))
	29	r = sd_id128_get_machine(&id);
	30	else
	31	r = sd_id128_get_machine_app_specific(arg_app, &id);
	32	if (r < 0)
	33	return log_error_errno(r, "Failed to get %smachine-ID: %m",
	34	sd_id128_is_null(arg_app) ? "" : "app-specific ");
	35
a19fdd66	36	return id128_pretty_print(id, arg_mode);
0d1d512f ZJS	37	}
	38
	39	static int verb_boot_id(int argc, char *argv, void userdata) {
	40	sd_id128_t id;
	41	int r;
	42
	43	if (sd_id128_is_null(arg_app))
	44	r = sd_id128_get_boot(&id);
	45	else
	46	r = sd_id128_get_boot_app_specific(arg_app, &id);
	47	if (r < 0)
	48	return log_error_errno(r, "Failed to get %sboot-ID: %m",
	49	sd_id128_is_null(arg_app) ? "" : "app-specific ");
	50
a19fdd66	51	return id128_pretty_print(id, arg_mode);
0d1d512f ZJS	52	}
	53
	54	static int verb_invocation_id(int argc, char *argv, void userdata) {
	55	sd_id128_t id;
	56	int r;
	57
	58	if (!sd_id128_is_null(arg_app))
886cf317 ZJS	59	return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
886cf317 ZJS	60	"Verb \"invocation-id\" cannot be combined with --app-specific=.");
0d1d512f ZJS	61
	62	r = sd_id128_get_invocation(&id);
	63	if (r < 0)
	64	return log_error_errno(r, "Failed to get invocation-ID: %m");
	65
a19fdd66	66	return id128_pretty_print(id, arg_mode);
0d1d512f ZJS	67	}
0d1d512f ZJS	68
dc972b07 ZJS	69	static int show_one(Table *table, const char name, sd_id128_t uuid, bool first) {
	70	int r;
	71
	72	if (arg_mode == ID128_PRINT_PRETTY) {
	73	_cleanup_free_ char *id = NULL;
	74
	75	id = strreplace(name, "-", "_");
	76	if (!id)
	77	return log_oom();
	78
	79	ascii_strupper(id);
	80
	81	r = id128_pretty_print_sample(id, uuid);
	82	if (r < 0)
	83	return r;
	84	if (!first)
	85	puts("");
	86	return 0;
	87
	88	} else {
	89	if (!*table) {
72d43d09	90	*table = table_new("name", "id");
dc972b07 ZJS	91	if (!*table)
	92	return log_oom();
	93	table_set_width(*table, 0);
	94	}
	95
	96	return table_add_many(*table,
	97	TABLE_STRING, name,
	98	arg_mode == ID128_PRINT_ID128 ? TABLE_ID128 : TABLE_UUID,
	99	uuid);
	100	}
	101	}
	102
	103	static int verb_show(int argc, char *argv, void userdata) {
	104	_cleanup_(table_unrefp) Table *table = NULL;
	105	char **p;
	106	int r;
	107
	108	argv = strv_skip(argv, 1);
	109	if (strv_isempty(argv))
	110	for (const GptPartitionType *e = gpt_partition_type_table; e->name; e++) {
	111	r = show_one(&table, e->name, e->uuid, e == gpt_partition_type_table);
	112	if (r < 0)
	113	return r;
	114	}
	115	else
	116	STRV_FOREACH(p, argv) {
	117	sd_id128_t uuid;
	118	bool have_uuid;
	119	const char *id;
	120
	121	/* Check if the argument is an actual UUID first */
	122	have_uuid = sd_id128_from_string(*p, &uuid) >= 0;
	123
	124	if (have_uuid)
	125	id = gpt_partition_type_uuid_to_string(uuid) ?: "XYZ";
	126	else {
	127	r = gpt_partition_type_uuid_from_string(*p, &uuid);
	128	if (r < 0)
	129	return log_error_errno(r, "Unknown identifier \"%s\".", *p);
	130
	131	id = *p;
	132	}
	133
	134	r = show_one(&table, id, uuid, p == argv);
	135	if (r < 0)
	136	return r;
	137	}
	138
	139	if (table) {
	140	r = table_print(table, NULL);
	141	if (r < 0)
4b6607d9	142	return table_log_print_error(r);
dc972b07 ZJS	143	}
	144
	145	return 0;
	146	}
	147
0d1d512f ZJS	148	static int help(void) {
	149	_cleanup_free_ char *link = NULL;
	150	int r;
	151
	152	r = terminal_urlify_man("systemd-id128", "1", &link);
	153	if (r < 0)
	154	return log_oom();
	155
a19fdd66 LP	156	printf("%s [OPTIONS...] COMMAND\n\n"
a19fdd66 LP	157	"%sGenerate and print 128bit identifiers.%s\n"
20a51f6a	158	"\nCommands:\n"
dc972b07	159	" new Generate a new ID\n"
0d1d512f ZJS	160	" machine-id Print the ID of current machine\n"
	161	" boot-id Print the ID of current boot\n"
	162	" invocation-id Print the ID of current invocation\n"
dc972b07	163	" show [NAME] Print one or more well-known IDs\n"
0d1d512f	164	" help Show this help\n"
a19fdd66 LP	165	"\nOptions:\n"
	166	" -h --help Show this help\n"
	167	" -p --pretty Generate samples of program code\n"
	168	" -a --app-specific=ID Generate app-specific IDs\n"
	169	" -u --uuid Output in UUID format\n"
0d1d512f ZJS	170	"\nSee the %s for details.\n"
0d1d512f ZJS	171	, program_invocation_short_name
a19fdd66	172	, ansi_highlight(), ansi_normal()
0d1d512f ZJS	173	, link
	174	);
	175
	176	return 0;
	177	}
	178
	179	static int verb_help(int argc, char *argv, void userdata) {
	180	return help();
	181	}
	182
	183	static int parse_argv(int argc, char *argv[]) {
	184	enum {
	185	ARG_VERSION = 0x100,
	186	};
	187
	188	static const struct option options[] = {
	189	{ "help", no_argument, NULL, 'h' },
	190	{ "version", no_argument, NULL, ARG_VERSION },
be440e09	191	{ "pretty", no_argument, NULL, 'p' },
0d1d512f	192	{ "app-specific", required_argument, NULL, 'a' },
a19fdd66	193	{ "uuid", no_argument, NULL, 'u' },
0d1d512f ZJS	194	{},
	195	};
	196
	197	int c, r;
	198
	199	assert(argc >= 0);
	200	assert(argv);
	201
a19fdd66	202	while ((c = getopt_long(argc, argv, "hpa:u", options, NULL)) >= 0)
0d1d512f ZJS	203	switch (c) {
	204
	205	case 'h':
	206	return help();
	207
	208	case ARG_VERSION:
	209	return version();
	210
	211	case 'p':
a19fdd66	212	arg_mode = ID128_PRINT_PRETTY;
0d1d512f ZJS	213	break;
	214
	215	case 'a':
	216	r = sd_id128_from_string(optarg, &arg_app);
	217	if (r < 0)
	218	return log_error_errno(r, "Failed to parse \"%s\" as application-ID: %m", optarg);
	219	break;
	220
a19fdd66 LP	221	case 'u':
	222	arg_mode = ID128_PRINT_UUID;
	223	break;
	224
0d1d512f ZJS	225	case '?':
	226	return -EINVAL;
	227
	228	default:
	229	assert_not_reached("Unhandled option");
	230	}
	231
	232	return 1;
	233	}
	234
	235	static int id128_main(int argc, char *argv[]) {
	236	static const Verb verbs[] = {
	237	{ "new", VERB_ANY, 1, 0, verb_new },
	238	{ "machine-id", VERB_ANY, 1, 0, verb_machine_id },
	239	{ "boot-id", VERB_ANY, 1, 0, verb_boot_id },
	240	{ "invocation-id", VERB_ANY, 1, 0, verb_invocation_id },
dc972b07	241	{ "show", VERB_ANY, VERB_ANY, 0, verb_show },
0d1d512f ZJS	242	{ "help", VERB_ANY, VERB_ANY, 0, verb_help },
	243	{}
	244	};
	245
	246	return dispatch_verb(argc, argv, verbs, NULL);
	247	}
	248
3c79f0b3	249	static int run(int argc, char *argv[]) {
0d1d512f ZJS	250	int r;
0d1d512f ZJS	251
41d1f469	252	log_setup_cli();
0d1d512f ZJS	253
	254	r = parse_argv(argc, argv);
	255	if (r <= 0)
3c79f0b3	256	return r;
0d1d512f	257
3c79f0b3	258	return id128_main(argc, argv);
0d1d512f	259	}
3c79f0b3 ZJS	260
3c79f0b3 ZJS	261	DEFINE_MAIN_FUNCTION(run);