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 <stdio.h> 11 #include "internal/cryptlib.h" 12 #include <openssl/asn1.h> 13 14 #ifndef NO_OLD_ASN1 15 16 void *ASN1_dup(i2d_of_void *i2d, d2i_of_void *d2i, void *x) 17 { 18 unsigned char *b, *p; 19 const unsigned char *p2; 20 int i; 21 char *ret; 22 23 if (x == NULL) 24 return NULL; 25 26 i = i2d(x, NULL); 27 b = OPENSSL_malloc(i + 10); 28 if (b == NULL) { 29 ASN1err(ASN1_F_ASN1_DUP, ERR_R_MALLOC_FAILURE); 30 return NULL; 31 } 32 p = b; 33 i = i2d(x, &p); 34 p2 = b; 35 ret = d2i(NULL, &p2, i); 36 OPENSSL_free(b); 37 return ret; 38 } 39 40 #endif 41 42 /* 43 * ASN1_ITEM version of dup: this follows the model above except we don't 44 * need to allocate the buffer. At some point this could be rewritten to 45 * directly dup the underlying structure instead of doing and encode and 46 * decode. 47 */ 48 49 void *ASN1_item_dup(const ASN1_ITEM *it, void *x) 50 { 51 unsigned char *b = NULL; 52 const unsigned char *p; 53 long i; 54 void *ret; 55 56 if (x == NULL) 57 return NULL; 58 59 i = ASN1_item_i2d(x, &b, it); 60 if (b == NULL) { 61 ASN1err(ASN1_F_ASN1_ITEM_DUP, ERR_R_MALLOC_FAILURE); 62 return NULL; 63 } 64 p = b; 65 ret = ASN1_item_d2i(NULL, &p, i, it); 66 OPENSSL_free(b); 67 return ret; 68 } 69