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0d1d512f7f
The raison d'etre for this program is printing machine-app-specific IDs. We provide a library function for that, but not a convenient API. We can hardly ask people to quickly hack their own C programs or call libsystemd through CFFI in python or another scripting language if they just want to print an ID. Verb 'new' was already available as 'journalctl --new-id128', but this makes it more discoverable. v2: - rename binary to systemd-id128 - make --app-specific= into a switch that applies to boot-id and machine-id
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <stdio.h>
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#include "sd-id128.h"
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#include "id128-print.h"
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#include "log.h"
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int id128_pretty_print(sd_id128_t id, bool pretty) {
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unsigned i;
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if (!pretty) {
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printf(SD_ID128_FORMAT_STR "\n",
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SD_ID128_FORMAT_VAL(id));
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return 0;
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}
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printf("As string:\n"
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SD_ID128_FORMAT_STR "\n\n"
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"As UUID:\n"
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"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n\n"
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"As man:sd-id128(3) macro:\n"
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"#define MESSAGE_XYZ SD_ID128_MAKE(",
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SD_ID128_FORMAT_VAL(id),
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SD_ID128_FORMAT_VAL(id));
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for (i = 0; i < 16; i++)
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printf("%02x%s", id.bytes[i], i != 15 ? "," : "");
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fputs(")\n\n", stdout);
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printf("As Python constant:\n"
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">>> import uuid\n"
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">>> MESSAGE_XYZ = uuid.UUID('" SD_ID128_FORMAT_STR "')\n",
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SD_ID128_FORMAT_VAL(id));
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return 0;
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}
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int id128_print_new(bool pretty) {
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sd_id128_t id;
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int r;
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r = sd_id128_randomize(&id);
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if (r < 0)
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return log_error_errno(r, "Failed to generate ID: %m");
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return id128_pretty_print(id, pretty);
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}
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