1 /* 2 * Copyright 1995-2021 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 "internal/cryptlib.h" 13 #include <openssl/asn1.h> 14 #include "asn1_local.h" 15 #include <openssl/asn1t.h> 16 17 IMPLEMENT_ASN1_DUP_FUNCTION(ASN1_UTCTIME) 18 19 /* This is the primary function used to parse ASN1_UTCTIME */ 20 int ossl_asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d) 21 { 22 /* wrapper around ossl_asn1_time_to_tm */ 23 if (d->type != V_ASN1_UTCTIME) 24 return 0; 25 return ossl_asn1_time_to_tm(tm, d); 26 } 27 28 int ASN1_UTCTIME_check(const ASN1_UTCTIME *d) 29 { 30 return ossl_asn1_utctime_to_tm(NULL, d); 31 } 32 33 /* Sets the string via simple copy without cleaning it up */ 34 int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str) 35 { 36 ASN1_UTCTIME t; 37 38 t.type = V_ASN1_UTCTIME; 39 t.length = strlen(str); 40 t.data = (unsigned char *)str; 41 t.flags = 0; 42 43 if (!ASN1_UTCTIME_check(&t)) 44 return 0; 45 46 if (s != NULL && !ASN1_STRING_copy(s, &t)) 47 return 0; 48 49 return 1; 50 } 51 52 ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t) 53 { 54 return ASN1_UTCTIME_adj(s, t, 0, 0); 55 } 56 57 ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t, 58 int offset_day, long offset_sec) 59 { 60 struct tm *ts; 61 struct tm data; 62 63 ts = OPENSSL_gmtime(&t, &data); 64 if (ts == NULL) 65 return NULL; 66 67 if (offset_day || offset_sec) { 68 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) 69 return NULL; 70 } 71 72 return ossl_asn1_time_from_tm(s, ts, V_ASN1_UTCTIME); 73 } 74 75 int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t) 76 { 77 struct tm stm, ttm; 78 int day, sec; 79 80 if (!ossl_asn1_utctime_to_tm(&stm, s)) 81 return -2; 82 83 if (OPENSSL_gmtime(&t, &ttm) == NULL) 84 return -2; 85 86 if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm)) 87 return -2; 88 89 if (day > 0 || sec > 0) 90 return 1; 91 if (day < 0 || sec < 0) 92 return -1; 93 return 0; 94 } 95 96 int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm) 97 { 98 if (tm->type != V_ASN1_UTCTIME) 99 return 0; 100 return ASN1_TIME_print(bp, tm); 101 } 102