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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
*/
/*
* GENERALIZEDTIME implementation. Based on UTCTIME
*/
#include <stdio.h>
#include <time.h>
#include "internal/cryptlib.h"
#include <openssl/asn1.h>
#include "asn1_locl.h"
int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d)
{
/* wrapper around asn1_time_to_tm */
if (d->type != V_ASN1_GENERALIZEDTIME)
return 0;
return asn1_time_to_tm(tm, d);
}
int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d)
{
return asn1_generalizedtime_to_tm(NULL, d);
}
int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str)
{
ASN1_GENERALIZEDTIME t;
t.type = V_ASN1_GENERALIZEDTIME;
t.length = strlen(str);
t.data = (unsigned char *)str;
t.flags = 0;
if (ASN1_GENERALIZEDTIME_check(&t)) {
if (s != NULL) {
if (!ASN1_STRING_set((ASN1_STRING *)s, str, t.length))
return 0;
s->type = V_ASN1_GENERALIZEDTIME;
}
return 1;
}
return 0;
}
ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,
time_t t)
{
return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0);
}
ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s,
time_t t, int offset_day,
long offset_sec)
{
char *p;
struct tm *ts;
struct tm data;
const size_t len = 20;
ASN1_GENERALIZEDTIME *tmps = NULL;
if (s == NULL)
tmps = ASN1_GENERALIZEDTIME_new();
else
tmps = s;
if (tmps == NULL)
return NULL;
ts = OPENSSL_gmtime(&t, &data);
if (ts == NULL)
goto err;
if (offset_day || offset_sec) {
if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
goto err;
}
p = (char *)tmps->data;
if ((p == NULL) || ((size_t)tmps->length < len)) {
p = OPENSSL_malloc(len);
if (p == NULL) {
ASN1err(ASN1_F_ASN1_GENERALIZEDTIME_ADJ, ERR_R_MALLOC_FAILURE);
goto err;
}
OPENSSL_free(tmps->data);
tmps->data = (unsigned char *)p;
}
tmps->length = BIO_snprintf(p, len, "%04d%02d%02d%02d%02d%02dZ",
ts->tm_year + 1900, ts->tm_mon + 1,
ts->tm_mday, ts->tm_hour, ts->tm_min,
ts->tm_sec);
tmps->type = V_ASN1_GENERALIZEDTIME;
#ifdef CHARSET_EBCDIC_not
ebcdic2ascii(tmps->data, tmps->data, tmps->length);
#endif
return tmps;
err:
if (s == NULL)
ASN1_GENERALIZEDTIME_free(tmps);
return NULL;
}
int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
{
if (tm->type != V_ASN1_GENERALIZEDTIME)
return 0;
return ASN1_TIME_print(bp, tm);
}
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