1 /* crypto/asn1/a_set.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
62 #include <openssl/asn1_mac.h>
67 unsigned char *pbData;
72 * SetBlobCmp This function compares two elements of SET_OF block
74 static int SetBlobCmp(const void *elem1, const void *elem2)
76 const MYBLOB *b1 = (const MYBLOB *)elem1;
77 const MYBLOB *b2 = (const MYBLOB *)elem2;
80 r = memcmp(b1->pbData, b2->pbData,
81 b1->cbData < b2->cbData ? b1->cbData : b2->cbData);
84 return b1->cbData - b2->cbData;
88 * int is_set: if TRUE, then sort the contents (i.e. it isn't a SEQUENCE)
90 int i2d_ASN1_SET(STACK_OF(OPENSSL_BLOCK) *a, unsigned char **pp,
91 i2d_of_void *i2d, int ex_tag, int ex_class, int is_set)
96 unsigned char *pStart, *pTempMem;
102 for (i = sk_OPENSSL_BLOCK_num(a) - 1; i >= 0; i--) {
103 int tmplen = i2d(sk_OPENSSL_BLOCK_value(a, i), NULL);
104 if (tmplen > INT_MAX - ret)
106 ret += i2d(sk_OPENSSL_BLOCK_value(a, i), NULL);
108 r = ASN1_object_size(1, ret, ex_tag);
109 if (pp == NULL || r == -1)
113 ASN1_put_object(&p, 1, ret, ex_tag, ex_class);
115 /* Modified by gp@nsj.co.jp */
116 /* And then again by Ben */
117 /* And again by Steve */
119 if (!is_set || (sk_OPENSSL_BLOCK_num(a) < 2)) {
120 for (i = 0; i < sk_OPENSSL_BLOCK_num(a); i++)
121 i2d(sk_OPENSSL_BLOCK_value(a, i), &p);
127 pStart = p; /* Catch the beg of Setblobs */
128 /* In this array we will store the SET blobs */
129 rgSetBlob = OPENSSL_malloc(sk_OPENSSL_BLOCK_num(a) * sizeof(MYBLOB));
130 if (rgSetBlob == NULL) {
131 ASN1err(ASN1_F_I2D_ASN1_SET, ERR_R_MALLOC_FAILURE);
135 for (i = 0; i < sk_OPENSSL_BLOCK_num(a); i++) {
136 rgSetBlob[i].pbData = p; /* catch each set encode blob */
137 i2d(sk_OPENSSL_BLOCK_value(a, i), &p);
138 rgSetBlob[i].cbData = p - rgSetBlob[i].pbData; /* Length of this
142 totSize = p - pStart; /* This is the total size of all set blobs */
145 * Now we have to sort the blobs. I am using a simple algo. *Sort ptrs
146 * *Copy to temp-mem *Copy from temp-mem to user-mem
148 qsort(rgSetBlob, sk_OPENSSL_BLOCK_num(a), sizeof(MYBLOB), SetBlobCmp);
149 if (!(pTempMem = OPENSSL_malloc(totSize))) {
150 ASN1err(ASN1_F_I2D_ASN1_SET, ERR_R_MALLOC_FAILURE);
154 /* Copy to temp mem */
156 for (i = 0; i < sk_OPENSSL_BLOCK_num(a); ++i) {
157 memcpy(p, rgSetBlob[i].pbData, rgSetBlob[i].cbData);
158 p += rgSetBlob[i].cbData;
161 /* Copy back to user mem*/
162 memcpy(pStart, pTempMem, totSize);
163 OPENSSL_free(pTempMem);
164 OPENSSL_free(rgSetBlob);
169 STACK_OF(OPENSSL_BLOCK) *d2i_ASN1_SET(STACK_OF(OPENSSL_BLOCK) **a,
170 const unsigned char **pp,
171 long length, d2i_of_void *d2i,
172 void (*free_func) (OPENSSL_BLOCK),
173 int ex_tag, int ex_class)
176 STACK_OF(OPENSSL_BLOCK) *ret = NULL;
178 if ((a == NULL) || ((*a) == NULL)) {
179 if ((ret = sk_OPENSSL_BLOCK_new_null()) == NULL) {
180 ASN1err(ASN1_F_D2I_ASN1_SET, ERR_R_MALLOC_FAILURE);
187 c.max = (length == 0) ? 0 : (c.p + length);
189 c.inf = ASN1_get_object(&c.p, &c.slen, &c.tag, &c.xclass, c.max - c.p);
192 if (ex_class != c.xclass) {
193 ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_BAD_CLASS);
196 if (ex_tag != c.tag) {
197 ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_BAD_TAG);
200 if ((c.slen + c.p) > c.max) {
201 ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_LENGTH_ERROR);
205 * check for infinite constructed - it can be as long as the amount of
208 if (c.inf == (V_ASN1_CONSTRUCTED + 1))
209 c.slen = length + *pp - c.p;
210 c.max = c.p + c.slen;
212 while (c.p < c.max) {
215 if (M_ASN1_D2I_end_sequence())
218 * XXX: This was called with 4 arguments, incorrectly, it seems if
219 * ((s=func(NULL,&c.p,c.slen,c.max-c.p)) == NULL)
221 if ((s = d2i(NULL, &c.p, c.slen)) == NULL) {
222 ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_ERROR_PARSING_SET_ELEMENT);
223 asn1_add_error(*pp, (int)(c.p - *pp));
226 if (!sk_OPENSSL_BLOCK_push(ret, s))
234 if ((ret != NULL) && ((a == NULL) || (*a != ret))) {
235 if (free_func != NULL)
236 sk_OPENSSL_BLOCK_pop_free(ret, free_func);
238 sk_OPENSSL_BLOCK_free(ret);