ref: 009439541d2c6e8af2596f8fb1b4df85861fd212
dir: /third_party/boringssl/src/crypto/asn1/a_gentm.c/
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.] */
#include <openssl/asn1.h>
#include <openssl/bytestring.h>
#include <openssl/err.h>
#include <openssl/mem.h>
#include <openssl/posix_time.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "internal.h"
int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d) {
if (d->type != V_ASN1_GENERALIZEDTIME) {
return 0;
}
CBS cbs;
CBS_init(&cbs, d->data, (size_t)d->length);
if (!CBS_parse_generalized_time(&cbs, tm, /*allow_timezone_offset=*/0)) {
return 0;
}
return 1;
}
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) {
size_t len = strlen(str);
CBS cbs;
CBS_init(&cbs, (const uint8_t *)str, len);
if (!CBS_parse_generalized_time(&cbs, /*out_tm=*/NULL,
/*allow_timezone_offset=*/0)) {
return 0;
}
if (s != NULL) {
if (!ASN1_STRING_set(s, str, len)) {
return 0;
}
s->type = V_ASN1_GENERALIZEDTIME;
}
return 1;
}
ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,
int64_t posix_time) {
return ASN1_GENERALIZEDTIME_adj(s, posix_time, 0, 0);
}
ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s,
int64_t posix_time, int offset_day,
long offset_sec) {
struct tm data;
if (!OPENSSL_posix_to_tm(posix_time, &data)) {
return NULL;
}
if (offset_day || offset_sec) {
if (!OPENSSL_gmtime_adj(&data, offset_day, offset_sec)) {
return NULL;
}
}
if (data.tm_year < 0 - 1900 || data.tm_year > 9999 - 1900) {
OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_TIME_VALUE);
return NULL;
}
char buf[16];
int ret = snprintf(buf, sizeof(buf), "%04d%02d%02d%02d%02d%02dZ",
data.tm_year + 1900, data.tm_mon + 1, data.tm_mday,
data.tm_hour, data.tm_min, data.tm_sec);
if (ret != (int)(sizeof(buf) - 1)) {
abort(); // |snprintf| should neither truncate nor write fewer bytes.
}
int free_s = 0;
if (s == NULL) {
free_s = 1;
s = ASN1_UTCTIME_new();
if (s == NULL) {
return NULL;
}
}
if (!ASN1_STRING_set(s, buf, strlen(buf))) {
if (free_s) {
ASN1_UTCTIME_free(s);
}
return NULL;
}
s->type = V_ASN1_GENERALIZEDTIME;
return s;
}