1 /* 2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <openssl/asn1.h> 11 12 #include <openssl/err.h> 13 #include <openssl/mem.h> 14 15 // ASN1_ITEM version of dup: this follows the model above except we don't 16 // need to allocate the buffer. At some point this could be rewritten to 17 // directly dup the underlying structure instead of doing and encode and 18 // decode. ASN1_item_dup(const ASN1_ITEM * it,void * x)19void *ASN1_item_dup(const ASN1_ITEM *it, void *x) { 20 unsigned char *b = NULL; 21 const unsigned char *p; 22 long i; 23 void *ret; 24 25 if (x == NULL) { 26 return NULL; 27 } 28 29 i = ASN1_item_i2d(reinterpret_cast<ASN1_VALUE *>(x), &b, it); 30 if (b == NULL) { 31 return NULL; 32 } 33 p = b; 34 ret = ASN1_item_d2i(NULL, &p, i, it); 35 OPENSSL_free(b); 36 return ret; 37 } 38