155714Skris/* crypto/asn1/a_dup.c */
255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
355714Skris * All rights reserved.
455714Skris *
555714Skris * This package is an SSL implementation written
655714Skris * by Eric Young (eay@cryptsoft.com).
755714Skris * The implementation was written so as to conform with Netscapes SSL.
8296341Sdelphij *
955714Skris * This library is free for commercial and non-commercial use as long as
1055714Skris * the following conditions are aheared to.  The following conditions
1155714Skris * apply to all code found in this distribution, be it the RC4, RSA,
1255714Skris * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
1355714Skris * included with this distribution is covered by the same copyright terms
1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15296341Sdelphij *
1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in
1755714Skris * the code are not to be removed.
1855714Skris * If this package is used in a product, Eric Young should be given attribution
1955714Skris * as the author of the parts of the library used.
2055714Skris * This can be in the form of a textual message at program startup or
2155714Skris * in documentation (online or textual) provided with the package.
22296341Sdelphij *
2355714Skris * Redistribution and use in source and binary forms, with or without
2455714Skris * modification, are permitted provided that the following conditions
2555714Skris * are met:
2655714Skris * 1. Redistributions of source code must retain the copyright
2755714Skris *    notice, this list of conditions and the following disclaimer.
2855714Skris * 2. Redistributions in binary form must reproduce the above copyright
2955714Skris *    notice, this list of conditions and the following disclaimer in the
3055714Skris *    documentation and/or other materials provided with the distribution.
3155714Skris * 3. All advertising materials mentioning features or use of this software
3255714Skris *    must display the following acknowledgement:
3355714Skris *    "This product includes cryptographic software written by
3455714Skris *     Eric Young (eay@cryptsoft.com)"
3555714Skris *    The word 'cryptographic' can be left out if the rouines from the library
3655714Skris *    being used are not cryptographic related :-).
37296341Sdelphij * 4. If you include any Windows specific code (or a derivative thereof) from
3855714Skris *    the apps directory (application code) you must include an acknowledgement:
3955714Skris *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40296341Sdelphij *
4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4455714Skris * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
5155714Skris * SUCH DAMAGE.
52296341Sdelphij *
5355714Skris * The licence and distribution terms for any publically available version or
5455714Skris * derivative of this code cannot be changed.  i.e. this code cannot simply be
5555714Skris * copied and put under another distribution licence
5655714Skris * [including the GNU Public Licence.]
5755714Skris */
5855714Skris
5955714Skris#include <stdio.h>
6055714Skris#include "cryptlib.h"
61109998Smarkm#include <openssl/asn1.h>
6255714Skris
63109998Smarkm#ifndef NO_OLD_ASN1
6455714Skris
65238405Sjkimvoid *ASN1_dup(i2d_of_void *i2d, d2i_of_void *d2i, void *x)
66296341Sdelphij{
67296341Sdelphij    unsigned char *b, *p;
68296341Sdelphij    const unsigned char *p2;
69296341Sdelphij    int i;
70296341Sdelphij    char *ret;
7155714Skris
72296341Sdelphij    if (x == NULL)
73296341Sdelphij        return (NULL);
7455714Skris
75296341Sdelphij    i = i2d(x, NULL);
76296341Sdelphij    b = OPENSSL_malloc(i + 10);
77296341Sdelphij    if (b == NULL) {
78296341Sdelphij        ASN1err(ASN1_F_ASN1_DUP, ERR_R_MALLOC_FAILURE);
79296341Sdelphij        return (NULL);
80296341Sdelphij    }
81296341Sdelphij    p = b;
82296341Sdelphij    i = i2d(x, &p);
83296341Sdelphij    p2 = b;
84296341Sdelphij    ret = d2i(NULL, &p2, i);
85296341Sdelphij    OPENSSL_free(b);
86296341Sdelphij    return (ret);
87296341Sdelphij}
88109998Smarkm
89109998Smarkm#endif
90109998Smarkm
91296341Sdelphij/*
92296341Sdelphij * ASN1_ITEM version of dup: this follows the model above except we don't
93296341Sdelphij * need to allocate the buffer. At some point this could be rewritten to
94296341Sdelphij * directly dup the underlying structure instead of doing and encode and
95296341Sdelphij * decode.
96109998Smarkm */
97109998Smarkm
98109998Smarkmvoid *ASN1_item_dup(const ASN1_ITEM *it, void *x)
99296341Sdelphij{
100296341Sdelphij    unsigned char *b = NULL;
101296341Sdelphij    const unsigned char *p;
102296341Sdelphij    long i;
103296341Sdelphij    void *ret;
104109998Smarkm
105296341Sdelphij    if (x == NULL)
106296341Sdelphij        return (NULL);
107109998Smarkm
108296341Sdelphij    i = ASN1_item_i2d(x, &b, it);
109296341Sdelphij    if (b == NULL) {
110296341Sdelphij        ASN1err(ASN1_F_ASN1_ITEM_DUP, ERR_R_MALLOC_FAILURE);
111296341Sdelphij        return (NULL);
112296341Sdelphij    }
113296341Sdelphij    p = b;
114296341Sdelphij    ret = ASN1_item_d2i(NULL, &p, i, it);
115296341Sdelphij    OPENSSL_free(b);
116296341Sdelphij    return (ret);
117296341Sdelphij}
118