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 #include <stdio.h> 11 #include <time.h> 12 #include "internal/cryptlib.h" 13 #include <openssl/asn1.h> 14 #include "asn1_local.h" 15 16 /* This is the primary function used to parse ASN1_UTCTIME */ 17 int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d) 18 { 19 /* wrapper around ans1_time_to_tm */ 20 if (d->type != V_ASN1_UTCTIME) 21 return 0; 22 return asn1_time_to_tm(tm, d); 23 } 24 25 int ASN1_UTCTIME_check(const ASN1_UTCTIME *d) 26 { 27 return asn1_utctime_to_tm(NULL, d); 28 } 29 30 /* Sets the string via simple copy without cleaning it up */ 31 int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str) 32 { 33 ASN1_UTCTIME t; 34 35 t.type = V_ASN1_UTCTIME; 36 t.length = strlen(str); 37 t.data = (unsigned char *)str; 38 t.flags = 0; 39 40 if (!ASN1_UTCTIME_check(&t)) 41 return 0; 42 43 if (s != NULL && !ASN1_STRING_copy(s, &t)) 44 return 0; 45 46 return 1; 47 } 48 49 ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t) 50 { 51 return ASN1_UTCTIME_adj(s, t, 0, 0); 52 } 53 54 ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t, 55 int offset_day, long offset_sec) 56 { 57 struct tm *ts; 58 struct tm data; 59 60 ts = OPENSSL_gmtime(&t, &data); 61 if (ts == NULL) 62 return NULL; 63 64 if (offset_day || offset_sec) { 65 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) 66 return NULL; 67 } 68 69 return asn1_time_from_tm(s, ts, V_ASN1_UTCTIME); 70 } 71 72 int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t) 73 { 74 struct tm stm, ttm; 75 int day, sec; 76 77 if (!asn1_utctime_to_tm(&stm, s)) 78 return -2; 79 80 if (OPENSSL_gmtime(&t, &ttm) == NULL) 81 return -2; 82 83 if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm)) 84 return -2; 85 86 if (day > 0 || sec > 0) 87 return 1; 88 if (day < 0 || sec < 0) 89 return -1; 90 return 0; 91 } 92 93 int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm) 94 { 95 if (tm->type != V_ASN1_UTCTIME) 96 return 0; 97 return ASN1_TIME_print(bp, tm); 98 } 99