3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 2000-2004 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).
61 #include <openssl/asn1.h>
62 #include <openssl/objects.h>
63 #include <openssl/err.h>
64 #include <openssl/asn1t.h>
66 #include "asn1_locl.h"
68 static int asn1_item_embed_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
70 static int asn1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
71 static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
72 static int asn1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
73 static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
74 static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
76 ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)
78 ASN1_VALUE *ret = NULL;
79 if (ASN1_item_ex_new(&ret, it) > 0)
84 /* Allocate an ASN1 structure */
86 int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
88 return asn1_item_embed_new(pval, it, 0);
91 int asn1_item_embed_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int embed)
93 const ASN1_TEMPLATE *tt = NULL;
94 const ASN1_EXTERN_FUNCS *ef;
95 const ASN1_AUX *aux = it->funcs;
99 if (aux && aux->asn1_cb)
100 asn1_cb = aux->asn1_cb;
106 CRYPTO_push_info(it->sname);
111 case ASN1_ITYPE_EXTERN:
113 if (ef && ef->asn1_ex_new) {
114 if (!ef->asn1_ex_new(pval, it))
119 case ASN1_ITYPE_PRIMITIVE:
121 if (!asn1_template_new(pval, it->templates))
123 } else if (!asn1_primitive_new(pval, it))
127 case ASN1_ITYPE_MSTRING:
128 if (!asn1_primitive_new(pval, it))
132 case ASN1_ITYPE_CHOICE:
134 i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
146 memset(*pval, 0, it->size);
148 *pval = OPENSSL_zalloc(it->size);
152 asn1_set_choice_selector(pval, -1, it);
153 if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
157 case ASN1_ITYPE_NDEF_SEQUENCE:
158 case ASN1_ITYPE_SEQUENCE:
160 i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
172 memset(*pval, 0, it->size);
174 *pval = OPENSSL_zalloc(it->size);
178 asn1_do_lock(pval, 0, it);
179 asn1_enc_init(pval, it);
180 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
181 pseqval = asn1_get_field_ptr(pval, tt);
182 if (!asn1_template_new(pseqval, tt))
185 if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
196 ASN1err(ASN1_F_ASN1_ITEM_EMBED_NEW, ERR_R_MALLOC_FAILURE);
204 ASN1err(ASN1_F_ASN1_ITEM_EMBED_NEW, ASN1_R_AUX_ERROR);
205 ASN1_item_ex_free(pval, it);
214 static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
216 const ASN1_EXTERN_FUNCS *ef;
220 case ASN1_ITYPE_EXTERN:
222 if (ef && ef->asn1_ex_clear)
223 ef->asn1_ex_clear(pval, it);
228 case ASN1_ITYPE_PRIMITIVE:
230 asn1_template_clear(pval, it->templates);
232 asn1_primitive_clear(pval, it);
235 case ASN1_ITYPE_MSTRING:
236 asn1_primitive_clear(pval, it);
239 case ASN1_ITYPE_CHOICE:
240 case ASN1_ITYPE_SEQUENCE:
241 case ASN1_ITYPE_NDEF_SEQUENCE:
247 static int asn1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
249 const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);
250 int embed = tt->flags & ASN1_TFLG_EMBED;
254 tval = (ASN1_VALUE *)pval;
257 if (tt->flags & ASN1_TFLG_OPTIONAL) {
258 asn1_template_clear(pval, tt);
261 /* If ANY DEFINED BY nothing to do */
263 if (tt->flags & ASN1_TFLG_ADB_MASK) {
269 CRYPTO_push_info(tt->field_name);
271 /* If SET OF or SEQUENCE OF, its a STACK */
272 if (tt->flags & ASN1_TFLG_SK_MASK) {
273 STACK_OF(ASN1_VALUE) *skval;
274 skval = sk_ASN1_VALUE_new_null();
276 ASN1err(ASN1_F_ASN1_TEMPLATE_NEW, ERR_R_MALLOC_FAILURE);
280 *pval = (ASN1_VALUE *)skval;
284 /* Otherwise pass it back to the item routine */
285 ret = asn1_item_embed_new(pval, it, embed);
294 static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
296 /* If ADB or STACK just NULL the field */
297 if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK))
300 asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));
304 * NB: could probably combine most of the real XXX_new() behaviour and junk
305 * all the old functions.
308 static int asn1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
318 const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
320 return pf->prim_new(pval, it);
323 if (it->itype == ASN1_ITYPE_MSTRING)
329 *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);
333 *(ASN1_BOOLEAN *)pval = it->size;
337 *pval = (ASN1_VALUE *)1;
341 typ = OPENSSL_malloc(sizeof(*typ));
344 typ->value.ptr = NULL;
346 *pval = (ASN1_VALUE *)typ;
350 str = ASN1_STRING_type_new(utype);
351 if (it->itype == ASN1_ITYPE_MSTRING && str)
352 str->flags |= ASN1_STRING_FLAG_MSTRING;
353 *pval = (ASN1_VALUE *)str;
361 static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
364 if (it && it->funcs) {
365 const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
367 pf->prim_clear(pval, it);
372 if (!it || (it->itype == ASN1_ITYPE_MSTRING))
376 if (utype == V_ASN1_BOOLEAN)
377 *(ASN1_BOOLEAN *)pval = it->size;