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 /* 11 * GENERALIZEDTIME implementation. Based on UTCTIME 12 */ 13 14 #include <stdio.h> 15 #include <time.h> 16 #include "internal/cryptlib.h" 17 #include <openssl/asn1.h> 18 #include "asn1_local.h" 19 #include <openssl/asn1t.h> 20 21 IMPLEMENT_ASN1_DUP_FUNCTION(ASN1_GENERALIZEDTIME) 22 23 /* This is the primary function used to parse ASN1_GENERALIZEDTIME */ 24 static int asn1_generalizedtime_to_tm(struct tm *tm, 25 const ASN1_GENERALIZEDTIME *d) 26 { 27 /* wrapper around ossl_asn1_time_to_tm */ 28 if (d->type != V_ASN1_GENERALIZEDTIME) 29 return 0; 30 return ossl_asn1_time_to_tm(tm, d); 31 } 32 33 int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d) 34 { 35 return asn1_generalizedtime_to_tm(NULL, d); 36 } 37 38 int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str) 39 { 40 ASN1_GENERALIZEDTIME t; 41 42 t.type = V_ASN1_GENERALIZEDTIME; 43 t.length = strlen(str); 44 t.data = (unsigned char *)str; 45 t.flags = 0; 46 47 if (!ASN1_GENERALIZEDTIME_check(&t)) 48 return 0; 49 50 if (s != NULL && !ASN1_STRING_copy(s, &t)) 51 return 0; 52 53 return 1; 54 } 55 56 ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s, 57 time_t t) 58 { 59 return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0); 60 } 61 62 ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s, 63 time_t t, int offset_day, 64 long offset_sec) 65 { 66 struct tm *ts; 67 struct tm data; 68 69 ts = OPENSSL_gmtime(&t, &data); 70 if (ts == NULL) 71 return NULL; 72 73 if (offset_day || offset_sec) { 74 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) 75 return NULL; 76 } 77 78 return ossl_asn1_time_from_tm(s, ts, V_ASN1_GENERALIZEDTIME); 79 } 80 81 int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm) 82 { 83 if (tm->type != V_ASN1_GENERALIZEDTIME) 84 return 0; 85 return ASN1_TIME_print(bp, tm); 86 } 87