130 lines
2.9 KiB
C
130 lines
2.9 KiB
C
// Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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#include <openssl/asn1.h>
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#include <openssl/bytestring.h>
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#include <openssl/err.h>
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#include <openssl/mem.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "internal.h"
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int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d,
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int allow_timezone_offset) {
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if (d->type != V_ASN1_UTCTIME) {
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return 0;
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}
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CBS cbs;
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CBS_init(&cbs, d->data, (size_t)d->length);
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if (!CBS_parse_utc_time(&cbs, tm, allow_timezone_offset)) {
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return 0;
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}
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return 1;
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}
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int ASN1_UTCTIME_check(const ASN1_UTCTIME *d) {
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return asn1_utctime_to_tm(NULL, d, /*allow_timezone_offset=*/1);
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}
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int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str) {
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// Although elsewhere we allow timezone offsets with UTCTime, to be compatible
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// with some existing misissued certificates, this function is used to
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// construct new certificates and can be stricter.
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size_t len = strlen(str);
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CBS cbs;
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CBS_init(&cbs, (const uint8_t *)str, len);
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if (!CBS_parse_utc_time(&cbs, /*out_tm=*/NULL,
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/*allow_timezone_offset=*/0)) {
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return 0;
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}
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if (s != NULL) {
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if (!ASN1_STRING_set(s, str, len)) {
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return 0;
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}
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s->type = V_ASN1_UTCTIME;
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}
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return 1;
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}
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ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, int64_t posix_time) {
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return ASN1_UTCTIME_adj(s, posix_time, 0, 0);
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}
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ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, int64_t posix_time, int offset_day,
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long offset_sec) {
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struct tm data;
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if (!OPENSSL_posix_to_tm(posix_time, &data)) {
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return NULL;
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}
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if (offset_day || offset_sec) {
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if (!OPENSSL_gmtime_adj(&data, offset_day, offset_sec)) {
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return NULL;
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}
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}
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if (data.tm_year < 50 || data.tm_year >= 150) {
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return NULL;
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}
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char buf[14];
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int ret = snprintf(buf, sizeof(buf), "%02d%02d%02d%02d%02d%02dZ",
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data.tm_year % 100, data.tm_mon + 1, data.tm_mday,
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data.tm_hour, data.tm_min, data.tm_sec);
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if (ret != (int)(sizeof(buf) - 1)) {
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abort(); // |snprintf| should neither truncate nor write fewer bytes.
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}
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int free_s = 0;
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if (s == NULL) {
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free_s = 1;
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s = ASN1_UTCTIME_new();
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if (s == NULL) {
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return NULL;
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}
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}
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if (!ASN1_STRING_set(s, buf, strlen(buf))) {
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if (free_s) {
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ASN1_UTCTIME_free(s);
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}
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return NULL;
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}
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s->type = V_ASN1_UTCTIME;
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return s;
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}
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int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t) {
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struct tm stm, ttm;
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int day, sec;
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if (!asn1_utctime_to_tm(&stm, s, /*allow_timezone_offset=*/1)) {
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return -2;
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}
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if (!OPENSSL_posix_to_tm(t, &ttm)) {
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return -2;
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}
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if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm)) {
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return -2;
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}
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if (day > 0) {
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return 1;
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}
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if (day < 0) {
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return -1;
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}
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if (sec > 0) {
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return 1;
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}
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if (sec < 0) {
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return -1;
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}
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return 0;
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}
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