a_utctm.c
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/*
* Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <time.h>
#include "internal/cryptlib.h"
#include <openssl/asn1.h>
#include "asn1_locl.h"
/* This is the primary function used to parse ASN1_UTCTIME */
int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d)
{
/* wrapper around ans1_time_to_tm */
if (d->type != V_ASN1_UTCTIME)
return 0;
return asn1_time_to_tm(tm, d);
}
int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
{
return asn1_utctime_to_tm(NULL, d);
}
/* Sets the string via simple copy without cleaning it up */
int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
{
ASN1_UTCTIME t;
t.type = V_ASN1_UTCTIME;
t.length = strlen(str);
t.data = (unsigned char *)str;
t.flags = 0;
if (!ASN1_UTCTIME_check(&t))
return 0;
if (s != NULL && !ASN1_STRING_copy(s, &t))
return 0;
return 1;
}
ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
{
return ASN1_UTCTIME_adj(s, t, 0, 0);
}
ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
int offset_day, long offset_sec)
{
struct tm *ts;
struct tm data;
ts = OPENSSL_gmtime(&t, &data);
if (ts == NULL)
return NULL;
if (offset_day || offset_sec) {
if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
return NULL;
}
return asn1_time_from_tm(s, ts, V_ASN1_UTCTIME);
}
int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
{
struct tm stm, ttm;
int day, sec;
if (!asn1_utctime_to_tm(&stm, s))
return -2;
if (OPENSSL_gmtime(&t, &ttm) == NULL)
return -2;
if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm))
return -2;
if (day > 0 || sec > 0)
return 1;
if (day < 0 || sec < 0)
return -1;
return 0;
}
int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
{
if (tm->type != V_ASN1_UTCTIME)
return 0;
return ASN1_TIME_print(bp, tm);
}