mirror of
https://gitlab.torproject.org/tpo/core/tor.git
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66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
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/* Copyright (c) 2007-2018, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include "ed25519_cert.h"
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#include "lib/crypt_ops/crypto_format.h"
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#include "lib/malloc/util_malloc.h"
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int
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main(int argc, char **argv)
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{
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ed25519_cert_t *cert = NULL;
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if (argc != 2) {
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fprintf(stderr, "Usage:\n");
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fprintf(stderr, "%s <path to ed25519_signing_cert file>\n", argv[0]);
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return -1;
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}
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const char *filepath = argv[1];
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char *got_tag = NULL;
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uint8_t certbuf[256];
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ssize_t cert_body_len = crypto_read_tagged_contents_from_file(
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filepath, "ed25519v1-cert",
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&got_tag, certbuf, sizeof(certbuf));
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if (cert_body_len <= 0) {
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fprintf(stderr, "crypto_read_tagged_contents_from_file failed with "
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"error: %s\n", strerror(errno));
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return -2;
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}
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if (!got_tag) {
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fprintf(stderr, "Found no tag\n");
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return -3;
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}
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if (strcmp(got_tag, "type4") != 0) {
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fprintf(stderr, "Wrong tag: %s\n", got_tag);
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return -4;
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}
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tor_free(got_tag);
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ssize_t parsed = ed25519_cert_parse(&cert, certbuf, cert_body_len);
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if (parsed <= 0) {
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fprintf(stderr, "ed25519_cert_parse failed with return value %zd\n",
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parsed);
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return -5;
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}
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time_t expires_at = (time_t)cert->exp_field * 60 * 60;
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printf("Expires at: %s", ctime(&expires_at));
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ed25519_cert_free(cert);
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return 0;
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}
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