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https://github.com/openssl/openssl.git
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69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
/*
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* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/asn1.h>
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#ifndef NO_OLD_ASN1
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void *ASN1_dup(i2d_of_void *i2d, d2i_of_void *d2i, void *x)
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{
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unsigned char *b, *p;
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const unsigned char *p2;
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int i;
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char *ret;
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if (x == NULL)
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return (NULL);
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i = i2d(x, NULL);
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b = OPENSSL_malloc(i + 10);
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if (b == NULL) {
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ASN1err(ASN1_F_ASN1_DUP, ERR_R_MALLOC_FAILURE);
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return (NULL);
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}
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p = b;
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i = i2d(x, &p);
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p2 = b;
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ret = d2i(NULL, &p2, i);
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OPENSSL_free(b);
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return (ret);
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}
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#endif
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/*
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* ASN1_ITEM version of dup: this follows the model above except we don't
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* need to allocate the buffer. At some point this could be rewritten to
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* directly dup the underlying structure instead of doing and encode and
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* decode.
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*/
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void *ASN1_item_dup(const ASN1_ITEM *it, void *x)
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{
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unsigned char *b = NULL;
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const unsigned char *p;
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long i;
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void *ret;
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if (x == NULL)
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return (NULL);
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i = ASN1_item_i2d(x, &b, it);
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if (b == NULL) {
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ASN1err(ASN1_F_ASN1_ITEM_DUP, ERR_R_MALLOC_FAILURE);
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return (NULL);
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}
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p = b;
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ret = ASN1_item_d2i(NULL, &p, i, it);
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OPENSSL_free(b);
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return (ret);
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}
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