1169695Skan/* crypto/asn1/a_dup.c */ 2169695Skan/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3169695Skan * All rights reserved. 4169695Skan * 5169695Skan * This package is an SSL implementation written 6169695Skan * by Eric Young (eay@cryptsoft.com). 7169695Skan * The implementation was written so as to conform with Netscapes SSL. 8169695Skan * 9169695Skan * This library is free for commercial and non-commercial use as long as 10169695Skan * the following conditions are aheared to. The following conditions 11169695Skan * apply to all code found in this distribution, be it the RC4, RSA, 12169695Skan * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13169695Skan * included with this distribution is covered by the same copyright terms 14169695Skan * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15169695Skan * 16169695Skan * Copyright remains Eric Young's, and as such any Copyright notices in 17169695Skan * the code are not to be removed. 18169695Skan * If this package is used in a product, Eric Young should be given attribution 19169695Skan * as the author of the parts of the library used. 20169695Skan * This can be in the form of a textual message at program startup or 21169695Skan * in documentation (online or textual) provided with the package. 22169695Skan * 23169695Skan * Redistribution and use in source and binary forms, with or without 24169695Skan * modification, are permitted provided that the following conditions 25169695Skan * are met: 26169695Skan * 1. Redistributions of source code must retain the copyright 27169695Skan * notice, this list of conditions and the following disclaimer. 28169695Skan * 2. Redistributions in binary form must reproduce the above copyright 29169695Skan * notice, this list of conditions and the following disclaimer in the 30169695Skan * documentation and/or other materials provided with the distribution. 31169695Skan * 3. All advertising materials mentioning features or use of this software 32169695Skan * must display the following acknowledgement: 33169695Skan * "This product includes cryptographic software written by 34169695Skan * Eric Young (eay@cryptsoft.com)" 35169695Skan * The word 'cryptographic' can be left out if the rouines from the library 36169695Skan * being used are not cryptographic related :-). 37169695Skan * 4. If you include any Windows specific code (or a derivative thereof) from 38169695Skan * the apps directory (application code) you must include an acknowledgement: 39169695Skan * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40169695Skan * 41169695Skan * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42169695Skan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43169695Skan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44169695Skan * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45169695Skan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46169695Skan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47169695Skan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48169695Skan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49169695Skan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50169695Skan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51169695Skan * SUCH DAMAGE. 52169695Skan * 53169695Skan * The licence and distribution terms for any publically available version or 54169695Skan * derivative of this code cannot be changed. i.e. this code cannot simply be 55169695Skan * copied and put under another distribution licence 56169695Skan * [including the GNU Public Licence.] 57169695Skan */ 58169695Skan 59169695Skan#include <stdio.h> 60169695Skan#include "cryptlib.h" 61169695Skan#include <openssl/asn1.h> 62169695Skan 63169695Skan#ifndef NO_OLD_ASN1 64169695Skan 65169695Skanvoid *ASN1_dup(i2d_of_void *i2d, d2i_of_void *d2i, void *x) 66169695Skan{ 67169695Skan unsigned char *b, *p; 68169695Skan const unsigned char *p2; 69 int i; 70 char *ret; 71 72 if (x == NULL) 73 return (NULL); 74 75 i = i2d(x, NULL); 76 b = OPENSSL_malloc(i + 10); 77 if (b == NULL) { 78 ASN1err(ASN1_F_ASN1_DUP, ERR_R_MALLOC_FAILURE); 79 return (NULL); 80 } 81 p = b; 82 i = i2d(x, &p); 83 p2 = b; 84 ret = d2i(NULL, &p2, i); 85 OPENSSL_free(b); 86 return (ret); 87} 88 89#endif 90 91/* 92 * ASN1_ITEM version of dup: this follows the model above except we don't 93 * need to allocate the buffer. At some point this could be rewritten to 94 * directly dup the underlying structure instead of doing and encode and 95 * decode. 96 */ 97 98void *ASN1_item_dup(const ASN1_ITEM *it, void *x) 99{ 100 unsigned char *b = NULL; 101 const unsigned char *p; 102 long i; 103 void *ret; 104 105 if (x == NULL) 106 return (NULL); 107 108 i = ASN1_item_i2d(x, &b, it); 109 if (b == NULL) { 110 ASN1err(ASN1_F_ASN1_ITEM_DUP, ERR_R_MALLOC_FAILURE); 111 return (NULL); 112 } 113 p = b; 114 ret = ASN1_item_d2i(NULL, &p, i, it); 115 OPENSSL_free(b); 116 return (ret); 117} 118