pineapple-src/externals/libressl/crypto/asn1/evp_asn1.c

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2020-12-28 15:15:37 +00:00
/* $OpenBSD: evp_asn1.c,v 1.23 2018/11/09 04:20:27 tb Exp $ */
/* 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 <stdio.h>
#include <string.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/err.h>
int
ASN1_TYPE_set_octetstring(ASN1_TYPE *a, const unsigned char *data, int len)
{
ASN1_STRING *os;
if ((os = ASN1_OCTET_STRING_new()) == NULL)
return (0);
if (!ASN1_STRING_set(os, data, len)) {
ASN1_OCTET_STRING_free(os);
return (0);
}
ASN1_TYPE_set(a, V_ASN1_OCTET_STRING, os);
return (1);
}
int
ASN1_TYPE_get_octetstring(const ASN1_TYPE *a, unsigned char *data, int max_len)
{
int ret, num;
unsigned char *p;
if ((a->type != V_ASN1_OCTET_STRING) ||
(a->value.octet_string == NULL)) {
ASN1error(ASN1_R_DATA_IS_WRONG);
return (-1);
}
p = ASN1_STRING_data(a->value.octet_string);
ret = ASN1_STRING_length(a->value.octet_string);
if (ret < max_len)
num = ret;
else
num = max_len;
memcpy(data, p, num);
return (ret);
}
typedef struct {
ASN1_INTEGER *num;
ASN1_OCTET_STRING *value;
} ASN1_int_octetstring;
static const ASN1_TEMPLATE ASN1_INT_OCTETSTRING_seq_tt[] = {
{
.offset = offsetof(ASN1_int_octetstring, num),
.field_name = "num",
.item = &ASN1_INTEGER_it,
},
{
.offset = offsetof(ASN1_int_octetstring, value),
.field_name = "value",
.item = &ASN1_OCTET_STRING_it,
},
};
const ASN1_ITEM ASN1_INT_OCTETSTRING_it = {
.itype = ASN1_ITYPE_SEQUENCE,
.utype = V_ASN1_SEQUENCE,
.templates = ASN1_INT_OCTETSTRING_seq_tt,
.tcount = sizeof(ASN1_INT_OCTETSTRING_seq_tt) / sizeof(ASN1_TEMPLATE),
.size = sizeof(ASN1_int_octetstring),
.sname = "ASN1_INT_OCTETSTRING",
};
int
ASN1_TYPE_set_int_octetstring(ASN1_TYPE *at, long num, const unsigned char *data,
int len)
{
ASN1_int_octetstring *ios;
ASN1_STRING *sp = NULL;
int ret = 0;
if ((ios = (ASN1_int_octetstring *)ASN1_item_new(
&ASN1_INT_OCTETSTRING_it)) == NULL)
goto err;
if (!ASN1_INTEGER_set(ios->num, num))
goto err;
if (!ASN1_OCTET_STRING_set(ios->value, data, len))
goto err;
if ((sp = ASN1_item_pack(ios, &ASN1_INT_OCTETSTRING_it, NULL)) == NULL)
goto err;
ASN1_TYPE_set(at, V_ASN1_SEQUENCE, sp);
sp = NULL;
ret = 1;
err:
ASN1_item_free((ASN1_VALUE *)ios, &ASN1_INT_OCTETSTRING_it);
ASN1_STRING_free(sp);
return ret;
}
int
ASN1_TYPE_get_int_octetstring(const ASN1_TYPE *at, long *num, unsigned char *data,
int max_len)
{
ASN1_STRING *sp = at->value.sequence;
ASN1_int_octetstring *ios = NULL;
int ret = -1;
int len;
if (at->type != V_ASN1_SEQUENCE || sp == NULL)
goto err;
if ((ios = ASN1_item_unpack(sp, &ASN1_INT_OCTETSTRING_it)) == NULL)
goto err;
if (num != NULL)
*num = ASN1_INTEGER_get(ios->num);
if (data != NULL) {
len = ASN1_STRING_length(ios->value);
if (len > max_len)
len = max_len;
memcpy(data, ASN1_STRING_data(ios->value), len);
}
ret = ASN1_STRING_length(ios->value);
err:
ASN1_item_free((ASN1_VALUE *)ios, &ASN1_INT_OCTETSTRING_it);
if (ret == -1)
ASN1error(ASN1_R_DATA_IS_WRONG);
return ret;
}