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/*
* Copyright 2020-2024 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <time.h>
#include <openssl/asn1t.h>
#include "../testutil.h"
/*
* tweak for Windows
*/
#ifdef WIN32
#define timezone _timezone
#endif
#if defined(__FreeBSD__) || defined(__wasi__)
#define USE_TIMEGM
#endif
time_t test_asn1_string_to_time_t(const char *asn1_string)
{
ASN1_TIME *timestamp_asn1 = NULL;
struct tm *timestamp_tm = NULL;
#if defined(__DJGPP__)
char *tz = NULL;
#elif !defined(USE_TIMEGM)
time_t timestamp_local;
#endif
time_t timestamp_utc;
timestamp_asn1 = ASN1_TIME_new();
if (timestamp_asn1 == NULL)
return -1;
if (!ASN1_TIME_set_string(timestamp_asn1, asn1_string)) {
ASN1_TIME_free(timestamp_asn1);
return -1;
}
timestamp_tm = OPENSSL_malloc(sizeof(*timestamp_tm));
if (timestamp_tm == NULL) {
ASN1_TIME_free(timestamp_asn1);
return -1;
}
if (!(ASN1_TIME_to_tm(timestamp_asn1, timestamp_tm))) {
OPENSSL_free(timestamp_tm);
ASN1_TIME_free(timestamp_asn1);
return -1;
}
ASN1_TIME_free(timestamp_asn1);
#if defined(__DJGPP__)
/*
* This is NOT thread-safe. Do not use this method for platforms other
* than djgpp.
*/
tz = getenv("TZ");
if (tz != NULL) {
tz = OPENSSL_strdup(tz);
if (tz == NULL) {
OPENSSL_free(timestamp_tm);
return -1;
}
}
setenv("TZ", "UTC", 1);
timestamp_utc = mktime(timestamp_tm);
if (tz != NULL) {
setenv("TZ", tz, 1);
OPENSSL_free(tz);
} else {
unsetenv("TZ");
}
#elif defined(USE_TIMEGM)
timestamp_utc = timegm(timestamp_tm);
#else
timestamp_local = mktime(timestamp_tm);
timestamp_utc = timestamp_local - timezone;
#endif
OPENSSL_free(timestamp_tm);
return timestamp_utc;
}
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