1 /* crypto/asn1/a_bytes.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.]
61 #include <openssl/asn1.h>
63 static int asn1_collate_primitive(ASN1_STRING *a, ASN1_const_CTX *c,
65 static ASN1_STRING *int_d2i_ASN1_bytes(ASN1_STRING **a,
66 const unsigned char **pp, long length,
67 int Ptag, int Pclass, int depth,
70 * type is a 'bitmap' of acceptable string types.
72 ASN1_STRING *d2i_ASN1_type_bytes(ASN1_STRING **a, const unsigned char **pp,
73 long length, int type)
75 ASN1_STRING *ret = NULL;
76 const unsigned char *p;
83 inf = ASN1_get_object(&p, &len, &tag, &xclass, length);
88 i = ASN1_R_TAG_VALUE_TOO_HIGH;
91 if (!(ASN1_tag2bit(tag) & type)) {
92 i = ASN1_R_WRONG_TYPE;
96 /* If a bit-string, exit early */
97 if (tag == V_ASN1_BIT_STRING)
98 return (d2i_ASN1_BIT_STRING(a, pp, length));
100 if ((a == NULL) || ((*a) == NULL)) {
101 if ((ret = ASN1_STRING_new()) == NULL)
107 s = OPENSSL_malloc((int)len + 1);
109 i = ERR_R_MALLOC_FAILURE;
112 memcpy(s, p, (int)len);
118 if (ret->data != NULL)
119 OPENSSL_free(ret->data);
120 ret->length = (int)len;
128 ASN1err(ASN1_F_D2I_ASN1_TYPE_BYTES, i);
129 if ((ret != NULL) && ((a == NULL) || (*a != ret)))
130 ASN1_STRING_free(ret);
134 int i2d_ASN1_bytes(ASN1_STRING *a, unsigned char **pp, int tag, int xclass)
136 int ret, r, constructed;
142 if (tag == V_ASN1_BIT_STRING)
143 return (i2d_ASN1_BIT_STRING(a, pp));
146 r = ASN1_object_size(0, ret, tag);
151 if ((tag == V_ASN1_SEQUENCE) || (tag == V_ASN1_SET))
155 ASN1_put_object(&p, constructed, ret, tag, xclass);
156 memcpy(p, a->data, a->length);
163 * Maximum recursion depth of d2i_ASN1_bytes(): much more than should be
164 * encountered in pratice.
167 #define ASN1_BYTES_MAXDEPTH 20
169 ASN1_STRING *d2i_ASN1_bytes(ASN1_STRING **a, const unsigned char **pp,
170 long length, int Ptag, int Pclass)
173 ASN1_STRING *s = int_d2i_ASN1_bytes(a, pp, length, Ptag, Pclass, 0, &err);
175 ASN1err(ASN1_F_D2I_ASN1_BYTES, err);
179 static ASN1_STRING *int_d2i_ASN1_bytes(ASN1_STRING **a,
180 const unsigned char **pp, long length,
181 int Ptag, int Pclass,
182 int depth, int *perr)
184 ASN1_STRING *ret = NULL;
185 const unsigned char *p;
188 int inf, tag, xclass;
190 if (depth > ASN1_BYTES_MAXDEPTH) {
191 *perr = ASN1_R_NESTED_ASN1_STRING;
195 if ((a == NULL) || ((*a) == NULL)) {
196 if ((ret = ASN1_STRING_new()) == NULL)
202 inf = ASN1_get_object(&p, &len, &tag, &xclass, length);
204 *perr = ASN1_R_BAD_OBJECT_HEADER;
209 *perr = ASN1_R_WRONG_TAG;
213 if (inf & V_ASN1_CONSTRUCTED) {
223 c.max = (length == 0) ? 0 : (p + length);
224 if (!asn1_collate_primitive(ret, &c, depth)) {
232 if ((ret->length < len) || (ret->data == NULL)) {
233 s = OPENSSL_malloc((int)len + 1);
235 *perr = ERR_R_MALLOC_FAILURE;
238 if (ret->data != NULL)
239 OPENSSL_free(ret->data);
242 memcpy(s, p, (int)len);
247 if (ret->data != NULL)
248 OPENSSL_free(ret->data);
251 ret->length = (int)len;
261 if ((ret != NULL) && ((a == NULL) || (*a != ret)))
262 ASN1_STRING_free(ret);
267 * We are about to parse 0..n d2i_ASN1_bytes objects, we are to collapse them
268 * into the one structure that is then returned
271 * There have been a few bug fixes for this function from Paul Keogh
272 * <paul.keogh@sse.ie>, many thanks to him
274 static int asn1_collate_primitive(ASN1_STRING *a, ASN1_const_CTX *c,
277 ASN1_STRING *os = NULL;
286 c->error = ERR_R_PASSED_NULL_PARAMETER;
293 c->eos = ASN1_const_check_infinite_end(&c->p,
294 (long)(c->max - c->p));
303 if (int_d2i_ASN1_bytes(&os, &c->p, c->max - c->p, c->tag, c->xclass,
304 depth + 1, &c->error) == NULL) {
308 if (!BUF_MEM_grow_clean(&b, num + os->length)) {
309 c->error = ERR_R_BUF_LIB;
312 memcpy(&(b.data[num]), os->data, os->length);
314 c->slen -= (c->p - c->q);
318 if (!asn1_const_Finish(c))
323 OPENSSL_free(a->data);
324 a->data = (unsigned char *)b.data;
326 ASN1_STRING_free(os);
330 ASN1_STRING_free(os);
332 OPENSSL_free(b.data);