Branch data Line data Source code
1 : : /* asn_pack.c */
2 : : /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 : : * project 1999.
4 : : */
5 : : /* ====================================================================
6 : : * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7 : : *
8 : : * Redistribution and use in source and binary forms, with or without
9 : : * modification, are permitted provided that the following conditions
10 : : * are met:
11 : : *
12 : : * 1. Redistributions of source code must retain the above copyright
13 : : * notice, this list of conditions and the following disclaimer.
14 : : *
15 : : * 2. Redistributions in binary form must reproduce the above copyright
16 : : * notice, this list of conditions and the following disclaimer in
17 : : * the documentation and/or other materials provided with the
18 : : * distribution.
19 : : *
20 : : * 3. All advertising materials mentioning features or use of this
21 : : * software must display the following acknowledgment:
22 : : * "This product includes software developed by the OpenSSL Project
23 : : * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 : : *
25 : : * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 : : * endorse or promote products derived from this software without
27 : : * prior written permission. For written permission, please contact
28 : : * licensing@OpenSSL.org.
29 : : *
30 : : * 5. Products derived from this software may not be called "OpenSSL"
31 : : * nor may "OpenSSL" appear in their names without prior written
32 : : * permission of the OpenSSL Project.
33 : : *
34 : : * 6. Redistributions of any form whatsoever must retain the following
35 : : * acknowledgment:
36 : : * "This product includes software developed by the OpenSSL Project
37 : : * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 : : *
39 : : * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 : : * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 : : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 : : * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 : : * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 : : * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 : : * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 : : * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 : : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 : : * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 : : * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 : : * OF THE POSSIBILITY OF SUCH DAMAGE.
51 : : * ====================================================================
52 : : *
53 : : * This product includes cryptographic software written by Eric Young
54 : : * (eay@cryptsoft.com). This product includes software written by Tim
55 : : * Hudson (tjh@cryptsoft.com).
56 : : *
57 : : */
58 : :
59 : : #include <stdio.h>
60 : : #include "cryptlib.h"
61 : : #include <openssl/asn1.h>
62 : :
63 : : #ifndef NO_ASN1_OLD
64 : :
65 : : /* ASN1 packing and unpacking functions */
66 : :
67 : : /* Turn an ASN1 encoded SEQUENCE OF into a STACK of structures */
68 : :
69 : 0 : STACK_OF(OPENSSL_BLOCK) *ASN1_seq_unpack(const unsigned char *buf, int len,
70 : : d2i_of_void *d2i, void (*free_func)(OPENSSL_BLOCK))
71 : : {
72 : : STACK_OF(OPENSSL_BLOCK) *sk;
73 : : const unsigned char *pbuf;
74 : 0 : pbuf = buf;
75 [ # # ]: 0 : if (!(sk = d2i_ASN1_SET(NULL, &pbuf, len, d2i, free_func,
76 : : V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL)))
77 : 0 : ASN1err(ASN1_F_ASN1_SEQ_UNPACK,ASN1_R_DECODE_ERROR);
78 : 0 : return sk;
79 : : }
80 : :
81 : : /* Turn a STACK structures into an ASN1 encoded SEQUENCE OF structure in a
82 : : * OPENSSL_malloc'ed buffer
83 : : */
84 : :
85 : 0 : unsigned char *ASN1_seq_pack(STACK_OF(OPENSSL_BLOCK) *safes, i2d_of_void *i2d,
86 : : unsigned char **buf, int *len)
87 : : {
88 : : int safelen;
89 : : unsigned char *safe, *p;
90 [ # # ]: 0 : if (!(safelen = i2d_ASN1_SET(safes, NULL, i2d, V_ASN1_SEQUENCE,
91 : : V_ASN1_UNIVERSAL, IS_SEQUENCE))) {
92 : 0 : ASN1err(ASN1_F_ASN1_SEQ_PACK,ASN1_R_ENCODE_ERROR);
93 : 0 : return NULL;
94 : : }
95 [ # # ]: 0 : if (!(safe = OPENSSL_malloc (safelen))) {
96 : 0 : ASN1err(ASN1_F_ASN1_SEQ_PACK,ERR_R_MALLOC_FAILURE);
97 : 0 : return NULL;
98 : : }
99 : 0 : p = safe;
100 : 0 : i2d_ASN1_SET(safes, &p, i2d, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL,
101 : : IS_SEQUENCE);
102 [ # # ]: 0 : if (len) *len = safelen;
103 [ # # ]: 0 : if (buf) *buf = safe;
104 : 0 : return safe;
105 : : }
106 : :
107 : : /* Extract an ASN1 object from an ASN1_STRING */
108 : :
109 : 0 : void *ASN1_unpack_string(ASN1_STRING *oct, d2i_of_void *d2i)
110 : : {
111 : : const unsigned char *p;
112 : : char *ret;
113 : :
114 : 0 : p = oct->data;
115 [ # # ]: 0 : if(!(ret = d2i(NULL, &p, oct->length)))
116 : 0 : ASN1err(ASN1_F_ASN1_UNPACK_STRING,ASN1_R_DECODE_ERROR);
117 : 0 : return ret;
118 : : }
119 : :
120 : : /* Pack an ASN1 object into an ASN1_STRING */
121 : :
122 : 0 : ASN1_STRING *ASN1_pack_string(void *obj, i2d_of_void *i2d, ASN1_STRING **oct)
123 : : {
124 : : unsigned char *p;
125 : : ASN1_STRING *octmp;
126 : :
127 [ # # ][ # # ]: 0 : if (!oct || !*oct) {
128 [ # # ]: 0 : if (!(octmp = ASN1_STRING_new ())) {
129 : 0 : ASN1err(ASN1_F_ASN1_PACK_STRING,ERR_R_MALLOC_FAILURE);
130 : 0 : return NULL;
131 : : }
132 [ # # ]: 0 : if (oct) *oct = octmp;
133 : : } else octmp = *oct;
134 : :
135 [ # # ]: 0 : if (!(octmp->length = i2d(obj, NULL))) {
136 : 0 : ASN1err(ASN1_F_ASN1_PACK_STRING,ASN1_R_ENCODE_ERROR);
137 : 0 : goto err;
138 : : }
139 [ # # ]: 0 : if (!(p = OPENSSL_malloc (octmp->length))) {
140 : 0 : ASN1err(ASN1_F_ASN1_PACK_STRING,ERR_R_MALLOC_FAILURE);
141 : 0 : goto err;
142 : : }
143 : 0 : octmp->data = p;
144 : 0 : i2d (obj, &p);
145 : 0 : return octmp;
146 : : err:
147 [ # # ][ # # ]: 0 : if (!oct || !*oct)
148 : : {
149 : 0 : ASN1_STRING_free(octmp);
150 [ # # ]: 0 : if (oct)
151 : 0 : *oct = NULL;
152 : : }
153 : : return NULL;
154 : : }
155 : :
156 : : #endif
157 : :
158 : : /* ASN1_ITEM versions of the above */
159 : :
160 : 8 : ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_STRING **oct)
161 : : {
162 : : ASN1_STRING *octmp;
163 : :
164 [ + + ][ + - ]: 8 : if (!oct || !*oct) {
165 [ - + ]: 8 : if (!(octmp = ASN1_STRING_new ())) {
166 : 0 : ASN1err(ASN1_F_ASN1_ITEM_PACK,ERR_R_MALLOC_FAILURE);
167 : 0 : return NULL;
168 : : }
169 [ + + ]: 8 : if (oct) *oct = octmp;
170 : : } else octmp = *oct;
171 : :
172 [ - + ]: 8 : if(octmp->data) {
173 : 0 : OPENSSL_free(octmp->data);
174 : 0 : octmp->data = NULL;
175 : : }
176 : :
177 [ - + ]: 8 : if (!(octmp->length = ASN1_item_i2d(obj, &octmp->data, it))) {
178 : 0 : ASN1err(ASN1_F_ASN1_ITEM_PACK,ASN1_R_ENCODE_ERROR);
179 : 0 : return NULL;
180 : : }
181 [ - + ]: 8 : if (!octmp->data) {
182 : 0 : ASN1err(ASN1_F_ASN1_ITEM_PACK,ERR_R_MALLOC_FAILURE);
183 : 0 : return NULL;
184 : : }
185 : : return octmp;
186 : : }
187 : :
188 : : /* Extract an ASN1 object from an ASN1_STRING */
189 : :
190 : 57 : void *ASN1_item_unpack(ASN1_STRING *oct, const ASN1_ITEM *it)
191 : : {
192 : : const unsigned char *p;
193 : : void *ret;
194 : :
195 : 57 : p = oct->data;
196 [ - + ]: 57 : if(!(ret = ASN1_item_d2i(NULL, &p, oct->length, it)))
197 : 0 : ASN1err(ASN1_F_ASN1_ITEM_UNPACK,ASN1_R_DECODE_ERROR);
198 : 57 : return ret;
199 : : }
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