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,
72 static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
73 static int asn1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
74 static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
75 static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
77 ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)
79 ASN1_VALUE *ret = NULL;
80 if (ASN1_item_ex_new(&ret, it) > 0)
85 /* Allocate an ASN1 structure */
87 int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
89 return asn1_item_embed_new(pval, it, 0);
92 int asn1_item_embed_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int embed)
94 const ASN1_TEMPLATE *tt = NULL;
95 const ASN1_EXTERN_FUNCS *ef;
96 const ASN1_AUX *aux = it->funcs;
100 if (aux && aux->asn1_cb)
101 asn1_cb = aux->asn1_cb;
107 CRYPTO_push_info(it->sname);
112 case ASN1_ITYPE_EXTERN:
114 if (ef && ef->asn1_ex_new) {
115 if (!ef->asn1_ex_new(pval, it))
120 case ASN1_ITYPE_PRIMITIVE:
122 if (!asn1_template_new(pval, it->templates))
124 } else if (!asn1_primitive_new(pval, it, embed))
128 case ASN1_ITYPE_MSTRING:
129 if (!asn1_primitive_new(pval, it, embed))
133 case ASN1_ITYPE_CHOICE:
135 i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
147 memset(*pval, 0, it->size);
149 *pval = OPENSSL_zalloc(it->size);
153 asn1_set_choice_selector(pval, -1, it);
154 if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
158 case ASN1_ITYPE_NDEF_SEQUENCE:
159 case ASN1_ITYPE_SEQUENCE:
161 i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
173 memset(*pval, 0, it->size);
175 *pval = OPENSSL_zalloc(it->size);
179 asn1_do_lock(pval, 0, it);
180 asn1_enc_init(pval, it);
181 for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
182 pseqval = asn1_get_field_ptr(pval, tt);
183 if (!asn1_template_new(pseqval, tt))
186 if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
197 ASN1err(ASN1_F_ASN1_ITEM_EMBED_NEW, ERR_R_MALLOC_FAILURE);
205 ASN1err(ASN1_F_ASN1_ITEM_EMBED_NEW, ASN1_R_AUX_ERROR);
206 ASN1_item_ex_free(pval, it);
215 static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
217 const ASN1_EXTERN_FUNCS *ef;
221 case ASN1_ITYPE_EXTERN:
223 if (ef && ef->asn1_ex_clear)
224 ef->asn1_ex_clear(pval, it);
229 case ASN1_ITYPE_PRIMITIVE:
231 asn1_template_clear(pval, it->templates);
233 asn1_primitive_clear(pval, it);
236 case ASN1_ITYPE_MSTRING:
237 asn1_primitive_clear(pval, it);
240 case ASN1_ITYPE_CHOICE:
241 case ASN1_ITYPE_SEQUENCE:
242 case ASN1_ITYPE_NDEF_SEQUENCE:
248 static int asn1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
250 const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);
251 int embed = tt->flags & ASN1_TFLG_EMBED;
255 tval = (ASN1_VALUE *)pval;
258 if (tt->flags & ASN1_TFLG_OPTIONAL) {
259 asn1_template_clear(pval, tt);
262 /* If ANY DEFINED BY nothing to do */
264 if (tt->flags & ASN1_TFLG_ADB_MASK) {
270 CRYPTO_push_info(tt->field_name);
272 /* If SET OF or SEQUENCE OF, its a STACK */
273 if (tt->flags & ASN1_TFLG_SK_MASK) {
274 STACK_OF(ASN1_VALUE) *skval;
275 skval = sk_ASN1_VALUE_new_null();
277 ASN1err(ASN1_F_ASN1_TEMPLATE_NEW, ERR_R_MALLOC_FAILURE);
281 *pval = (ASN1_VALUE *)skval;
285 /* Otherwise pass it back to the item routine */
286 ret = asn1_item_embed_new(pval, it, embed);
295 static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
297 /* If ADB or STACK just NULL the field */
298 if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK))
301 asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));
305 * NB: could probably combine most of the real XXX_new() behaviour and junk
306 * all the old functions.
309 static int asn1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
320 const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
322 return pf->prim_new(pval, it);
325 if (it->itype == ASN1_ITYPE_MSTRING)
331 *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);
335 *(ASN1_BOOLEAN *)pval = it->size;
339 *pval = (ASN1_VALUE *)1;
343 typ = OPENSSL_malloc(sizeof(*typ));
346 typ->value.ptr = NULL;
348 *pval = (ASN1_VALUE *)typ;
353 str = *(ASN1_STRING **)pval;
354 memset(str, 0, sizeof(*str));
356 str->flags = ASN1_STRING_FLAG_EMBED;
358 str = ASN1_STRING_type_new(utype);
359 *pval = (ASN1_VALUE *)str;
361 if (it->itype == ASN1_ITYPE_MSTRING && str)
362 str->flags |= ASN1_STRING_FLAG_MSTRING;
370 static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
373 if (it && it->funcs) {
374 const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
376 pf->prim_clear(pval, it);
381 if (!it || (it->itype == ASN1_ITYPE_MSTRING))
385 if (utype == V_ASN1_BOOLEAN)
386 *(ASN1_BOOLEAN *)pval = it->size;