3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
62 #include <openssl/asn1.h>
66 /* ASN1 packing and unpacking functions */
68 /* Turn an ASN1 encoded SEQUENCE OF into a STACK of structures */
70 STACK *ASN1_seq_unpack(const unsigned char *buf, int len,
71 d2i_of_void *d2i, void (*free_func) (void *))
74 const unsigned char *pbuf;
76 if (!(sk = d2i_ASN1_SET(NULL, &pbuf, len, d2i, free_func,
77 V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL)))
78 ASN1err(ASN1_F_ASN1_SEQ_UNPACK, ASN1_R_DECODE_ERROR);
83 * Turn a STACK structures into an ASN1 encoded SEQUENCE OF structure in a
84 * OPENSSL_malloc'ed buffer
87 unsigned char *ASN1_seq_pack(STACK * safes, i2d_of_void *i2d,
88 unsigned char **buf, int *len)
91 unsigned char *safe, *p;
92 if (!(safelen = i2d_ASN1_SET(safes, NULL, i2d, V_ASN1_SEQUENCE,
93 V_ASN1_UNIVERSAL, IS_SEQUENCE))) {
94 ASN1err(ASN1_F_ASN1_SEQ_PACK, ASN1_R_ENCODE_ERROR);
97 if (!(safe = OPENSSL_malloc(safelen))) {
98 ASN1err(ASN1_F_ASN1_SEQ_PACK, ERR_R_MALLOC_FAILURE);
102 i2d_ASN1_SET(safes, &p, i2d, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL,
111 /* Extract an ASN1 object from an ASN1_STRING */
113 void *ASN1_unpack_string(ASN1_STRING *oct, d2i_of_void *d2i)
115 const unsigned char *p;
119 if (!(ret = d2i(NULL, &p, oct->length)))
120 ASN1err(ASN1_F_ASN1_UNPACK_STRING, ASN1_R_DECODE_ERROR);
124 /* Pack an ASN1 object into an ASN1_STRING */
126 ASN1_STRING *ASN1_pack_string(void *obj, i2d_of_void *i2d, ASN1_STRING **oct)
132 if (!(octmp = ASN1_STRING_new())) {
133 ASN1err(ASN1_F_ASN1_PACK_STRING, ERR_R_MALLOC_FAILURE);
141 if (!(octmp->length = i2d(obj, NULL))) {
142 ASN1err(ASN1_F_ASN1_PACK_STRING, ASN1_R_ENCODE_ERROR);
145 if (!(p = OPENSSL_malloc(octmp->length))) {
146 ASN1err(ASN1_F_ASN1_PACK_STRING, ERR_R_MALLOC_FAILURE);
154 ASN1_STRING_free(octmp);
163 /* ASN1_ITEM versions of the above */
165 ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_STRING **oct)
170 if (!(octmp = ASN1_STRING_new())) {
171 ASN1err(ASN1_F_ASN1_ITEM_PACK, ERR_R_MALLOC_FAILURE);
180 OPENSSL_free(octmp->data);
184 if (!(octmp->length = ASN1_item_i2d(obj, &octmp->data, it))) {
185 ASN1err(ASN1_F_ASN1_ITEM_PACK, ASN1_R_ENCODE_ERROR);
189 ASN1err(ASN1_F_ASN1_ITEM_PACK, ERR_R_MALLOC_FAILURE);
195 /* Extract an ASN1 object from an ASN1_STRING */
197 void *ASN1_item_unpack(ASN1_STRING *oct, const ASN1_ITEM *it)
199 const unsigned char *p;
203 if (!(ret = ASN1_item_d2i(NULL, &p, oct->length, it)))
204 ASN1err(ASN1_F_ASN1_ITEM_UNPACK, ASN1_R_DECODE_ERROR);