1 | /* |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. |
3 | * |
4 | * Licensed under the Apache License 2.0 (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, const 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, const 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 | |