1 /* 2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (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 20 /* This is the primary function used to parse ASN1_GENERALIZEDTIME */ 21 int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d) 22 { 23 /* wrapper around asn1_time_to_tm */ 24 if (d->type != V_ASN1_GENERALIZEDTIME) 25 return 0; 26 return asn1_time_to_tm(tm, d); 27 } 28 29 int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d) 30 { 31 return asn1_generalizedtime_to_tm(NULL, d); 32 } 33 34 int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str) 35 { 36 ASN1_GENERALIZEDTIME t; 37 38 t.type = V_ASN1_GENERALIZEDTIME; 39 t.length = strlen(str); 40 t.data = (unsigned char *)str; 41 t.flags = 0; 42 43 if (!ASN1_GENERALIZEDTIME_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_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s, 53 time_t t) 54 { 55 return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0); 56 } 57 58 ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s, 59 time_t t, int offset_day, 60 long offset_sec) 61 { 62 struct tm *ts; 63 struct tm data; 64 65 ts = OPENSSL_gmtime(&t, &data); 66 if (ts == NULL) 67 return NULL; 68 69 if (offset_day || offset_sec) { 70 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) 71 return NULL; 72 } 73 74 return asn1_time_from_tm(s, ts, V_ASN1_GENERALIZEDTIME); 75 } 76 77 int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm) 78 { 79 if (tm->type != V_ASN1_GENERALIZEDTIME) 80 return 0; 81 return ASN1_TIME_print(bp, tm); 82 } 83