ref: 7be7d0681f567e97fd37f937c2e5e486d6d74eab
dir: /sys/src/ape/lib/openssl/crypto/asn1/a_dup.c/
/* crypto/asn1/a_dup.c */
/* Copyright (C) 1995-1998 Eric Young ([email protected])
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young ([email protected]).
* 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 ([email protected]).
*
* 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 ([email protected])"
* 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 ([email protected])"
*
* 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 "cryptlib.h"
#include <openssl/asn1.h>
#ifndef NO_OLD_ASN1
void *ASN1_dup(i2d_of_void *i2d, d2i_of_void *d2i, char *x)
{
unsigned char *b,*p;
const unsigned char *p2;
int i;
char *ret;
if (x == NULL) return(NULL);
i=i2d(x,NULL);
b=OPENSSL_malloc(i+10);
if (b == NULL)
{ ASN1err(ASN1_F_ASN1_DUP,ERR_R_MALLOC_FAILURE); return(NULL); }
p= b;
i=i2d(x,&p);
p2= b;
ret=d2i(NULL,&p2,i);
OPENSSL_free(b);
return(ret);
}
#endif
/* ASN1_ITEM version of dup: this follows the model above except we don't need
* to allocate the buffer. At some point this could be rewritten to directly dup
* the underlying structure instead of doing and encode and decode.
*/
void *ASN1_item_dup(const ASN1_ITEM *it, void *x)
{
unsigned char *b = NULL;
const unsigned char *p;
long i;
void *ret;
if (x == NULL) return(NULL);
i=ASN1_item_i2d(x,&b,it);
if (b == NULL)
{ ASN1err(ASN1_F_ASN1_ITEM_DUP,ERR_R_MALLOC_FAILURE); return(NULL); }
p= b;
ret=ASN1_item_d2i(NULL,&p,i, it);
OPENSSL_free(b);
return(ret);
}