1 /* crypto/asn1/a_object.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 "internal/cryptlib.h"
62 #include <openssl/buffer.h>
63 #include <openssl/asn1.h>
64 #include <openssl/objects.h>
65 #include <openssl/bn.h>
66 #include "internal/asn1_int.h"
67 #include "asn1_locl.h"
69 int i2d_ASN1_OBJECT(ASN1_OBJECT *a, unsigned char **pp)
74 if ((a == NULL) || (a->data == NULL))
77 objsize = ASN1_object_size(0, a->length, V_ASN1_OBJECT);
82 ASN1_put_object(&p, 0, a->length, V_ASN1_OBJECT, V_ASN1_UNIVERSAL);
83 memcpy(p, a->data, a->length);
90 int a2d_ASN1_OBJECT(unsigned char *out, int olen, const char *buf, int num)
92 int i, first, len = 0, c, use_bn;
93 char ftmp[24], *tmp = ftmp;
94 int tmpsize = sizeof ftmp;
107 if ((c >= '0') && (c <= '2')) {
110 ASN1err(ASN1_F_A2D_ASN1_OBJECT, ASN1_R_FIRST_NUM_TOO_LARGE);
115 ASN1err(ASN1_F_A2D_ASN1_OBJECT, ASN1_R_MISSING_SECOND_NUMBER);
123 if ((c != '.') && (c != ' ')) {
124 ASN1err(ASN1_F_A2D_ASN1_OBJECT, ASN1_R_INVALID_SEPARATOR);
134 if ((c == ' ') || (c == '.'))
136 if ((c < '0') || (c > '9')) {
137 ASN1err(ASN1_F_A2D_ASN1_OBJECT, ASN1_R_INVALID_DIGIT);
140 if (!use_bn && l >= ((ULONG_MAX - 80) / 10L)) {
144 if (!bl || !BN_set_word(bl, l))
148 if (!BN_mul_word(bl, 10L)
149 || !BN_add_word(bl, c - '0'))
152 l = l * 10L + (long)(c - '0');
155 if ((first < 2) && (l >= 40)) {
156 ASN1err(ASN1_F_A2D_ASN1_OBJECT,
157 ASN1_R_SECOND_NUMBER_TOO_LARGE);
161 if (!BN_add_word(bl, first * 40))
164 l += (long)first *40;
169 blsize = BN_num_bits(bl);
170 blsize = (blsize + 6) / 7;
171 if (blsize > tmpsize) {
174 tmpsize = blsize + 32;
175 tmp = OPENSSL_malloc(tmpsize);
180 tmp[i++] = (unsigned char)BN_div_word(bl, 0x80L);
184 tmp[i++] = (unsigned char)l & 0x7f;
192 if (len + i > olen) {
193 ASN1err(ASN1_F_A2D_ASN1_OBJECT, ASN1_R_BUFFER_TOO_SMALL);
197 out[len++] = tmp[i] | 0x80;
213 int i2t_ASN1_OBJECT(char *buf, int buf_len, ASN1_OBJECT *a)
215 return OBJ_obj2txt(buf, buf_len, a, 0);
218 int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a)
220 char buf[80], *p = buf;
223 if ((a == NULL) || (a->data == NULL))
224 return (BIO_write(bp, "NULL", 4));
225 i = i2t_ASN1_OBJECT(buf, sizeof buf, a);
226 if (i > (int)(sizeof(buf) - 1)) {
227 p = OPENSSL_malloc(i + 1);
230 i2t_ASN1_OBJECT(p, i + 1, a);
233 i = BIO_write(bp, "<INVALID>", 9);
234 i += BIO_dump(bp, (const char *)a->data, a->length);
243 ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
246 const unsigned char *p;
250 ASN1_OBJECT *ret = NULL;
252 inf = ASN1_get_object(&p, &len, &tag, &xclass, length);
254 i = ASN1_R_BAD_OBJECT_HEADER;
258 if (tag != V_ASN1_OBJECT) {
259 i = ASN1_R_EXPECTING_AN_OBJECT;
262 ret = c2i_ASN1_OBJECT(a, &p, len);
267 ASN1err(ASN1_F_D2I_ASN1_OBJECT, i);
271 ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
274 ASN1_OBJECT *ret = NULL, tobj;
275 const unsigned char *p;
280 * Sanity check OID encoding. Need at least one content octet. MSB must
281 * be clear in the last octet. can't have leading 0x80 in subidentifiers,
284 if (len <= 0 || len > INT_MAX || pp == NULL || (p = *pp) == NULL ||
286 ASN1err(ASN1_F_C2I_ASN1_OBJECT, ASN1_R_INVALID_OBJECT_ENCODING);
289 /* Now 0 < len <= INT_MAX, so the cast is safe. */
292 * Try to lookup OID in table: these are all valid encodings so if we get
293 * a match we know the OID is valid.
295 tobj.nid = NID_undef;
297 tobj.length = length;
299 i = OBJ_obj2nid(&tobj);
300 if (i != NID_undef) {
302 * Return shared registered OID object: this improves efficiency
303 * because we don't have to return a dynamically allocated OID
304 * and NID lookups can use the cached value.
306 ret = OBJ_nid2obj(i);
308 ASN1_OBJECT_free(*a);
314 for (i = 0; i < length; i++, p++) {
315 if (*p == 0x80 && (!i || !(p[-1] & 0x80))) {
316 ASN1err(ASN1_F_C2I_ASN1_OBJECT, ASN1_R_INVALID_OBJECT_ENCODING);
322 * only the ASN1_OBJECTs from the 'table' will have values for ->sn or
325 if ((a == NULL) || ((*a) == NULL) ||
326 !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC)) {
327 if ((ret = ASN1_OBJECT_new()) == NULL)
333 /* detach data from object */
334 data = (unsigned char *)ret->data;
336 /* once detached we can change it */
337 if ((data == NULL) || (ret->length < length)) {
340 data = OPENSSL_malloc(length);
342 i = ERR_R_MALLOC_FAILURE;
345 ret->flags |= ASN1_OBJECT_FLAG_DYNAMIC_DATA;
347 memcpy(data, p, length);
348 /* reattach data to object, after which it remains const */
350 ret->length = length;
353 /* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */
361 ASN1err(ASN1_F_C2I_ASN1_OBJECT, i);
362 if ((a == NULL) || (*a != ret))
363 ASN1_OBJECT_free(ret);
367 ASN1_OBJECT *ASN1_OBJECT_new(void)
371 ret = OPENSSL_zalloc(sizeof(*ret));
373 ASN1err(ASN1_F_ASN1_OBJECT_NEW, ERR_R_MALLOC_FAILURE);
376 ret->flags = ASN1_OBJECT_FLAG_DYNAMIC;
380 void ASN1_OBJECT_free(ASN1_OBJECT *a)
384 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS) {
385 #ifndef CONST_STRICT /* disable purely for compile-time strict
386 * const checking. Doing this on a "real"
387 * compile will cause memory leaks */
388 OPENSSL_free((void*)a->sn);
389 OPENSSL_free((void*)a->ln);
391 a->sn = a->ln = NULL;
393 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA) {
394 OPENSSL_free((void*)a->data);
398 if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC)
402 ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, int len,
403 const char *sn, const char *ln)
412 o.flags = ASN1_OBJECT_FLAG_DYNAMIC | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS |
413 ASN1_OBJECT_FLAG_DYNAMIC_DATA;
414 return (OBJ_dup(&o));