Line data    Source code

       1             : /* crypto/asn1/a_dup.c */
       2             : /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
       3             :  * All rights reserved.
       4             :  *
       5             :  * This package is an SSL implementation written
       6             :  * by Eric Young (eay@cryptsoft.com).
       7             :  * The implementation was written so as to conform with Netscapes SSL.
       8             :  *
       9             :  * This library is free for commercial and non-commercial use as long as
      10             :  * the following conditions are aheared to.  The following conditions
      11             :  * apply to all code found in this distribution, be it the RC4, RSA,
      12             :  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
      13             :  * included with this distribution is covered by the same copyright terms
      14             :  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
      15             :  *
      16             :  * Copyright remains Eric Young's, and as such any Copyright notices in
      17             :  * the code are not to be removed.
      18             :  * If this package is used in a product, Eric Young should be given attribution
      19             :  * as the author of the parts of the library used.
      20             :  * This can be in the form of a textual message at program startup or
      21             :  * in documentation (online or textual) provided with the package.
      22             :  *
      23             :  * Redistribution and use in source and binary forms, with or without
      24             :  * modification, are permitted provided that the following conditions
      25             :  * are met:
      26             :  * 1. Redistributions of source code must retain the copyright
      27             :  *    notice, this list of conditions and the following disclaimer.
      28             :  * 2. Redistributions in binary form must reproduce the above copyright
      29             :  *    notice, this list of conditions and the following disclaimer in the
      30             :  *    documentation and/or other materials provided with the distribution.
      31             :  * 3. All advertising materials mentioning features or use of this software
      32             :  *    must display the following acknowledgement:
      33             :  *    "This product includes cryptographic software written by
      34             :  *     Eric Young (eay@cryptsoft.com)"
      35             :  *    The word 'cryptographic' can be left out if the rouines from the library
      36             :  *    being used are not cryptographic related :-).
      37             :  * 4. If you include any Windows specific code (or a derivative thereof) from
      38             :  *    the apps directory (application code) you must include an acknowledgement:
      39             :  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
      40             :  *
      41             :  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
      42             :  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      43             :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      44             :  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
      45             :  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      46             :  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      47             :  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      48             :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      49             :  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      50             :  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      51             :  * SUCH DAMAGE.
      52             :  *
      53             :  * The licence and distribution terms for any publically available version or
      54             :  * derivative of this code cannot be changed.  i.e. this code cannot simply be
      55             :  * copied and put under another distribution licence
      56             :  * [including the GNU Public Licence.]
      57             :  */
      58             : 
      59             : #include <stdio.h>
      60             : #include "cryptlib.h"
      61             : #include <openssl/asn1.h>
      62             : 
      63             : #ifndef NO_OLD_ASN1
      64             : 
      65           0 : void *ASN1_dup(i2d_of_void *i2d, d2i_of_void *d2i, void *x)
      66             : {
      67             :     unsigned char *b, *p;
      68             :     const unsigned char *p2;
      69             :     int i;
      70             :     char *ret;
      71             : 
      72           0 :     if (x == NULL)
      73             :         return (NULL);
      74             : 
      75           0 :     i = i2d(x, NULL);
      76           0 :     b = OPENSSL_malloc(i + 10);
      77           0 :     if (b == NULL) {
      78           0 :         ASN1err(ASN1_F_ASN1_DUP, ERR_R_MALLOC_FAILURE);
      79           0 :         return (NULL);
      80             :     }
      81           0 :     p = b;
      82           0 :     i = i2d(x, &p);
      83           0 :     p2 = b;
      84           0 :     ret = d2i(NULL, &p2, i);
      85           0 :     OPENSSL_free(b);
      86           0 :     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             : 
      98           0 : void *ASN1_item_dup(const ASN1_ITEM *it, void *x)
      99             : {
     100           0 :     unsigned char *b = NULL;
     101             :     const unsigned char *p;
     102             :     long i;
     103             :     void *ret;
     104             : 
     105           0 :     if (x == NULL)
     106             :         return (NULL);
     107             : 
     108           0 :     i = ASN1_item_i2d(x, &b, it);
     109           0 :     if (b == NULL) {
     110           0 :         ASN1err(ASN1_F_ASN1_ITEM_DUP, ERR_R_MALLOC_FAILURE);
     111           0 :         return (NULL);
     112             :     }
     113           0 :     p = b;
     114           0 :     ret = ASN1_item_d2i(NULL, &p, i, it);
     115           0 :     OPENSSL_free(b);
     116           0 :     return (ret);
     117             : }