1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57 #include <openssl/asn1.h>
58
59 #include <openssl/err.h>
60 #include <openssl/mem.h>
61
62
ASN1_dup(i2d_of_void * i2d,d2i_of_void * d2i,void * x)63 void *ASN1_dup(i2d_of_void *i2d, d2i_of_void *d2i, void *x)
64 {
65 unsigned char *b,*p;
66 const unsigned char *p2;
67 int i;
68 char *ret;
69
70 if (x == NULL) return(NULL);
71
72 i=i2d(x,NULL);
73 b=OPENSSL_malloc(i+10);
74 if (b == NULL)
75 { OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE); return(NULL); }
76 p= b;
77 i=i2d(x,&p);
78 p2= b;
79 ret=d2i(NULL,&p2,i);
80 OPENSSL_free(b);
81 return(ret);
82 }
83
84 /* ASN1_ITEM version of dup: this follows the model above except we don't need
85 * to allocate the buffer. At some point this could be rewritten to directly dup
86 * the underlying structure instead of doing and encode and decode. */
ASN1_item_dup(const ASN1_ITEM * it,void * x)87 void *ASN1_item_dup(const ASN1_ITEM *it, void *x)
88 {
89 unsigned char *b = NULL;
90 const unsigned char *p;
91 long i;
92 void *ret;
93
94 if (x == NULL) return(NULL);
95
96 i=ASN1_item_i2d(x,&b,it);
97 if (b == NULL)
98 { OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE); return(NULL); }
99 p= b;
100 ret=ASN1_item_d2i(NULL,&p,i, it);
101 OPENSSL_free(b);
102 return(ret);
103 }
104