| 1 | /*
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| 2 | * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include <time.h>
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| 12 | #include "internal/cryptlib.h"
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| 13 | #include <openssl/asn1.h>
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| 14 | #include "asn1_local.h"
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| 15 |
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| 16 | /* This is the primary function used to parse ASN1_UTCTIME */
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| 17 | int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d)
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| 18 | {
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| 19 | /* wrapper around ans1_time_to_tm */
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| 20 | if (d->type != V_ASN1_UTCTIME)
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| 21 | return 0;
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| 22 | return asn1_time_to_tm(tm, d);
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| 23 | }
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| 24 |
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| 25 | int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
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| 26 | {
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| 27 | return asn1_utctime_to_tm(NULL, d);
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| 28 | }
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| 29 |
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| 30 | /* Sets the string via simple copy without cleaning it up */
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| 31 | int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
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| 32 | {
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| 33 | ASN1_UTCTIME t;
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| 34 |
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| 35 | t.type = V_ASN1_UTCTIME;
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| 36 | t.length = strlen(str);
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| 37 | t.data = (unsigned char *)str;
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| 38 | t.flags = 0;
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| 39 |
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| 40 | if (!ASN1_UTCTIME_check(&t))
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| 41 | return 0;
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| 42 |
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| 43 | if (s != NULL && !ASN1_STRING_copy(s, &t))
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| 44 | return 0;
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| 45 |
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| 46 | return 1;
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| 47 | }
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| 48 |
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| 49 | ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
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| 50 | {
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| 51 | return ASN1_UTCTIME_adj(s, t, 0, 0);
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| 52 | }
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| 53 |
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| 54 | ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
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| 55 | int offset_day, long offset_sec)
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| 56 | {
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| 57 | struct tm *ts;
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| 58 | struct tm data;
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| 59 |
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| 60 | ts = OPENSSL_gmtime(&t, &data);
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| 61 | if (ts == NULL)
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| 62 | return NULL;
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| 63 |
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| 64 | if (offset_day || offset_sec) {
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| 65 | if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
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| 66 | return NULL;
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| 67 | }
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| 68 |
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| 69 | return asn1_time_from_tm(s, ts, V_ASN1_UTCTIME);
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| 70 | }
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| 71 |
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| 72 | int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
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| 73 | {
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| 74 | struct tm stm, ttm;
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| 75 | int day, sec;
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| 76 |
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| 77 | if (!asn1_utctime_to_tm(&stm, s))
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| 78 | return -2;
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| 79 |
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| 80 | if (OPENSSL_gmtime(&t, &ttm) == NULL)
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| 81 | return -2;
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| 82 |
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| 83 | if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm))
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| 84 | return -2;
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| 85 |
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| 86 | if (day > 0 || sec > 0)
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| 87 | return 1;
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| 88 | if (day < 0 || sec < 0)
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| 89 | return -1;
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| 90 | return 0;
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| 91 | }
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| 92 |
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| 93 | int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
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| 94 | {
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| 95 | if (tm->type != V_ASN1_UTCTIME)
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| 96 | return 0;
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| 97 | return ASN1_TIME_print(bp, tm);
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| 98 | }
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