1 /* 2 * Copyright 2020-2024 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <stdio.h> 11 #include <time.h> 12 #include <openssl/asn1t.h> 13 #include "../testutil.h" 14 15 /* 16 * tweak for Windows 17 */ 18 #ifdef WIN32 19 #define timezone _timezone 20 #endif 21 22 #if defined(__FreeBSD__) || defined(__wasi__) 23 #define USE_TIMEGM 24 #endif 25 test_asn1_string_to_time_t(const char * asn1_string)26time_t test_asn1_string_to_time_t(const char *asn1_string) 27 { 28 ASN1_TIME *timestamp_asn1 = NULL; 29 struct tm *timestamp_tm = NULL; 30 #if defined(__DJGPP__) 31 char *tz = NULL; 32 #elif !defined(USE_TIMEGM) 33 time_t timestamp_local; 34 #endif 35 time_t timestamp_utc; 36 37 timestamp_asn1 = ASN1_TIME_new(); 38 if (timestamp_asn1 == NULL) 39 return -1; 40 if (!ASN1_TIME_set_string(timestamp_asn1, asn1_string)) { 41 ASN1_TIME_free(timestamp_asn1); 42 return -1; 43 } 44 45 timestamp_tm = OPENSSL_malloc(sizeof(*timestamp_tm)); 46 if (timestamp_tm == NULL) { 47 ASN1_TIME_free(timestamp_asn1); 48 return -1; 49 } 50 if (!(ASN1_TIME_to_tm(timestamp_asn1, timestamp_tm))) { 51 OPENSSL_free(timestamp_tm); 52 ASN1_TIME_free(timestamp_asn1); 53 return -1; 54 } 55 ASN1_TIME_free(timestamp_asn1); 56 57 #if defined(__DJGPP__) 58 /* 59 * This is NOT thread-safe. Do not use this method for platforms other 60 * than djgpp. 61 */ 62 tz = getenv("TZ"); 63 if (tz != NULL) { 64 tz = OPENSSL_strdup(tz); 65 if (tz == NULL) { 66 OPENSSL_free(timestamp_tm); 67 return -1; 68 } 69 } 70 setenv("TZ", "UTC", 1); 71 72 timestamp_utc = mktime(timestamp_tm); 73 74 if (tz != NULL) { 75 setenv("TZ", tz, 1); 76 OPENSSL_free(tz); 77 } else { 78 unsetenv("TZ"); 79 } 80 #elif defined(USE_TIMEGM) 81 timestamp_utc = timegm(timestamp_tm); 82 #else 83 timestamp_local = mktime(timestamp_tm); 84 timestamp_utc = timestamp_local - timezone; 85 #endif 86 OPENSSL_free(timestamp_tm); 87 88 return timestamp_utc; 89 } 90