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Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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source-engine/thirdparty/openssl/crypto/asn1/a_gentm.c

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/* 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.]
*/
/*
* GENERALIZEDTIME implementation, written by Steve Henson. Based on UTCTIME
*/
#include <stdio.h>
#include <time.h>
#include "cryptlib.h"
#include "o_time.h"
#include <openssl/asn1.h>
#if 0
int i2d_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME *a, unsigned char **pp)
{
# ifdef CHARSET_EBCDIC
/* KLUDGE! We convert to ascii before writing DER */
int len;
char tmp[24];
ASN1_STRING tmpstr = *(ASN1_STRING *)a;
len = tmpstr.length;
ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len);
tmpstr.data = tmp;
a = (ASN1_GENERALIZEDTIME *)&tmpstr;
# endif
return (i2d_ASN1_bytes((ASN1_STRING *)a, pp,
V_ASN1_GENERALIZEDTIME, V_ASN1_UNIVERSAL));
}
ASN1_GENERALIZEDTIME *d2i_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME **a,
unsigned char **pp,
long length)
{
ASN1_GENERALIZEDTIME *ret = NULL;
ret =
(ASN1_GENERALIZEDTIME *)d2i_ASN1_bytes((ASN1_STRING **)a, pp, length,
V_ASN1_GENERALIZEDTIME,
V_ASN1_UNIVERSAL);
if (ret == NULL) {
ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME, ERR_R_NESTED_ASN1_ERROR);
return (NULL);
}
# ifdef CHARSET_EBCDIC
ascii2ebcdic(ret->data, ret->data, ret->length);
# endif
if (!ASN1_GENERALIZEDTIME_check(ret)) {
ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME, ASN1_R_INVALID_TIME_FORMAT);
goto err;
}
return (ret);
err:
if ((ret != NULL) && ((a == NULL) || (*a != ret)))
M_ASN1_GENERALIZEDTIME_free(ret);
return (NULL);
}
#endif
int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *d)
{
static const int min[9] = { 0, 0, 1, 1, 0, 0, 0, 0, 0 };
static const int max[9] = { 99, 99, 12, 31, 23, 59, 59, 12, 59 };
char *a;
int n, i, l, o;
if (d->type != V_ASN1_GENERALIZEDTIME)
return (0);
l = d->length;
a = (char *)d->data;
o = 0;
/*
* GENERALIZEDTIME is similar to UTCTIME except the year is represented
* as YYYY. This stuff treats everything as a two digit field so make
* first two fields 00 to 99
*/
if (l < 13)
goto err;
for (i = 0; i < 7; i++) {
if ((i == 6) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) {
i++;
break;
}
if ((a[o] < '0') || (a[o] > '9'))
goto err;
n = a[o] - '0';
if (++o > l)
goto err;
if ((a[o] < '0') || (a[o] > '9'))
goto err;
n = (n * 10) + a[o] - '0';
if (++o > l)
goto err;
if ((n < min[i]) || (n > max[i]))
goto err;
}
/*
* Optional fractional seconds: decimal point followed by one or more
* digits.
*/
if (a[o] == '.') {
if (++o > l)
goto err;
i = o;
while ((a[o] >= '0') && (a[o] <= '9') && (o <= l))
o++;
/* Must have at least one digit after decimal point */
if (i == o)
goto err;
}
if (a[o] == 'Z')
o++;
else if ((a[o] == '+') || (a[o] == '-')) {
o++;
if (o + 4 > l)
goto err;
for (i = 7; i < 9; i++) {
if ((a[o] < '0') || (a[o] > '9'))
goto err;
n = a[o] - '0';
o++;
if ((a[o] < '0') || (a[o] > '9'))
goto err;
n = (n * 10) + a[o] - '0';
if ((n < min[i]) || (n > max[i]))
goto err;
o++;
}
} else {
/* Missing time zone information. */
goto err;
}
return (o == l);
err:
return (0);
}
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;
if (ASN1_GENERALIZEDTIME_check(&t)) {
if (s != NULL) {
if (!ASN1_STRING_set((ASN1_STRING *)s,
(unsigned char *)str, t.length))
return 0;
s->type = V_ASN1_GENERALIZEDTIME;
}
return (1);
} else
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;
size_t len = 20;
if (s == NULL)
s = M_ASN1_GENERALIZEDTIME_new();
if (s == NULL)
return (NULL);
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;
}
p = (char *)s->data;
if ((p == NULL) || ((size_t)s->length < len)) {
p = OPENSSL_malloc(len);
if (p == NULL) {
ASN1err(ASN1_F_ASN1_GENERALIZEDTIME_ADJ, ERR_R_MALLOC_FAILURE);
return (NULL);
}
if (s->data != NULL)
OPENSSL_free(s->data);
s->data = (unsigned char *)p;
}
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);
s->length = strlen(p);
s->type = V_ASN1_GENERALIZEDTIME;
#ifdef CHARSET_EBCDIC_not
ebcdic2ascii(s->data, s->data, s->length);
#endif
return (s);
}