GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/crypto/../../libssl/src/crypto/asn1/asn_pack.c Lines: 4 68 5.9 %
Date: 2016-12-06 Branches: 1 48 2.1 %

Line Branch Exec Source
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/* $OpenBSD: asn_pack.c,v 1.15 2015/12/23 20:37:23 mmcc Exp $ */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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 * project 1999.
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 */
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/* ====================================================================
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 * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 *
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in
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 *    the documentation and/or other materials provided with the
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 *    distribution.
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 *
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 * 3. All advertising materials mentioning features or use of this
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 *    software must display the following acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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 *
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 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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 *    endorse or promote products derived from this software without
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 *    prior written permission. For written permission, please contact
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 *    licensing@OpenSSL.org.
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 *
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 * 5. Products derived from this software may not be called "OpenSSL"
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 *    nor may "OpenSSL" appear in their names without prior written
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 *    permission of the OpenSSL Project.
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 *
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 * 6. Redistributions of any form whatsoever must retain the following
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 *    acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 * OF THE POSSIBILITY OF SUCH DAMAGE.
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 * ====================================================================
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 *
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 * This product includes cryptographic software written by Eric Young
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 * (eay@cryptsoft.com).  This product includes software written by Tim
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 * Hudson (tjh@cryptsoft.com).
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 *
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 */
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#include <stdio.h>
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#include <openssl/asn1.h>
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#include <openssl/err.h>
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#ifndef NO_ASN1_OLD
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/* ASN1 packing and unpacking functions */
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/* Turn an ASN1 encoded SEQUENCE OF into a STACK of structures */
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STACK_OF(OPENSSL_BLOCK) *
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ASN1_seq_unpack(const unsigned char *buf, int len, d2i_of_void *d2i,
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    void (*free_func)(OPENSSL_BLOCK))
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{
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	STACK_OF(OPENSSL_BLOCK) *sk;
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	const unsigned char *pbuf;
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	pbuf = buf;
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	if (!(sk = d2i_ASN1_SET(NULL, &pbuf, len, d2i, free_func,
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					V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL)))
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		ASN1err(ASN1_F_ASN1_SEQ_UNPACK,ASN1_R_DECODE_ERROR);
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	return sk;
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}
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/* Turn a STACK structures into an ASN1 encoded SEQUENCE OF structure in a
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 * OPENSSL_malloc'ed buffer
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 */
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unsigned char *
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ASN1_seq_pack(STACK_OF(OPENSSL_BLOCK) *safes, i2d_of_void *i2d,
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    unsigned char **buf, int *len)
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{
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	int safelen;
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	unsigned char *safe, *p;
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	if (!(safelen = i2d_ASN1_SET(safes, NULL, i2d, V_ASN1_SEQUENCE,
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					      V_ASN1_UNIVERSAL, IS_SEQUENCE))) {
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		ASN1err(ASN1_F_ASN1_SEQ_PACK,ASN1_R_ENCODE_ERROR);
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		return NULL;
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	}
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	if (!(safe = malloc(safelen))) {
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		ASN1err(ASN1_F_ASN1_SEQ_PACK,ERR_R_MALLOC_FAILURE);
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		return NULL;
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	}
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	p = safe;
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	i2d_ASN1_SET(safes, &p, i2d, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL,
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								 IS_SEQUENCE);
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	if (len)
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		*len = safelen;
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	if (buf)
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		*buf = safe;
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	return safe;
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}
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/* Extract an ASN1 object from an ASN1_STRING */
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void *
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ASN1_unpack_string(ASN1_STRING *oct, d2i_of_void *d2i)
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{
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	const unsigned char *p;
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	char *ret;
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	p = oct->data;
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	if (!(ret = d2i(NULL, &p, oct->length)))
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		ASN1err(ASN1_F_ASN1_UNPACK_STRING,ASN1_R_DECODE_ERROR);
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	return ret;
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}
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/* Pack an ASN1 object into an ASN1_STRING */
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ASN1_STRING *
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ASN1_pack_string(void *obj, i2d_of_void *i2d, ASN1_STRING **oct)
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{
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	unsigned char *p;
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	ASN1_STRING *octmp;
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	if (!oct || !*oct) {
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		if (!(octmp = ASN1_STRING_new())) {
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			ASN1err(ASN1_F_ASN1_PACK_STRING,ERR_R_MALLOC_FAILURE);
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			return NULL;
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		}
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	} else
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		octmp = *oct;
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	if (!(octmp->length = i2d(obj, NULL))) {
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		ASN1err(ASN1_F_ASN1_PACK_STRING,ASN1_R_ENCODE_ERROR);
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		goto err;
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	}
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	if (!(p = malloc (octmp->length))) {
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		ASN1err(ASN1_F_ASN1_PACK_STRING,ERR_R_MALLOC_FAILURE);
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		goto err;
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	}
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	octmp->data = p;
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	i2d (obj, &p);
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	if (oct)
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		*oct = octmp;
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	return octmp;
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err:
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	if (!oct || octmp != *oct) {
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		ASN1_STRING_free(octmp);
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		if (oct)
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			*oct = NULL;
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	}
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	return NULL;
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}
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#endif
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/* ASN1_ITEM versions of the above */
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ASN1_STRING *
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ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_STRING **oct)
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{
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	ASN1_STRING *octmp;
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	if (!oct || !*oct) {
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		if (!(octmp = ASN1_STRING_new ())) {
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			ASN1err(ASN1_F_ASN1_ITEM_PACK, ERR_R_MALLOC_FAILURE);
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			return NULL;
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		}
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	} else
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		octmp = *oct;
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	free(octmp->data);
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	octmp->data = NULL;
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	if (!(octmp->length = ASN1_item_i2d(obj, &octmp->data, it))) {
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		ASN1err(ASN1_F_ASN1_ITEM_PACK, ASN1_R_ENCODE_ERROR);
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		goto err;
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	}
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	if (!octmp->data) {
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		ASN1err(ASN1_F_ASN1_ITEM_PACK, ERR_R_MALLOC_FAILURE);
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		goto err;
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	}
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	if (oct)
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		*oct = octmp;
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	return octmp;
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err:
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	if (!oct || octmp != *oct)
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		ASN1_STRING_free(octmp);
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	return NULL;
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}
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/* Extract an ASN1 object from an ASN1_STRING */
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void *
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ASN1_item_unpack(ASN1_STRING *oct, const ASN1_ITEM *it)
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{
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	const unsigned char *p;
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	void *ret;
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	p = oct->data;
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	if (!(ret = ASN1_item_d2i(NULL, &p, oct->length, it)))
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		ASN1err(ASN1_F_ASN1_ITEM_UNPACK, ASN1_R_DECODE_ERROR);
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	return ret;
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}