2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * 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 static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine);
67 static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
68 static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
69 void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
71 ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)
73 ASN1_VALUE *ret = NULL;
74 if(ASN1_item_ex_new(&ret, it) > 0) return ret;
78 /* Allocate an ASN1 structure */
80 int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
82 return asn1_item_ex_combine_new(pval, it, 0);
85 static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine)
87 const ASN1_TEMPLATE *tt = NULL;
88 const ASN1_COMPAT_FUNCS *cf;
89 const ASN1_EXTERN_FUNCS *ef;
90 const ASN1_AUX *aux = it->funcs;
94 if(aux && aux->asn1_cb) asn1_cb = aux->asn1_cb;
97 if(!combine) *pval = NULL;
101 case ASN1_ITYPE_EXTERN:
103 if(ef && ef->asn1_ex_new) {
104 if(!ef->asn1_ex_new(pval, it))
109 case ASN1_ITYPE_COMPAT:
111 if(cf && cf->asn1_new) {
112 *pval = cf->asn1_new();
113 if(!*pval) goto memerr;
117 case ASN1_ITYPE_PRIMITIVE:
119 if(!ASN1_template_new(pval, it->templates))
122 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);
139 *pval = OPENSSL_malloc(it->size);
140 if(!*pval) goto memerr;
141 memset(*pval, 0, it->size);
143 asn1_set_choice_selector(pval, -1, it);
144 if(asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it))
148 case ASN1_ITYPE_SEQUENCE:
150 i = asn1_cb(ASN1_OP_NEW_PRE, pval, it);
155 *pval = OPENSSL_malloc(it->size);
156 if(!*pval) goto memerr;
157 memset(*pval, 0, it->size);
158 asn1_do_lock(pval, 0, it);
159 asn1_enc_init(pval, it);
161 for(i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
162 pseqval = asn1_get_field_ptr(pval, tt);
163 if(!ASN1_template_new(pseqval, tt)) goto memerr;
165 if(asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it))
172 ASN1err(ASN1_F_ASN1_ITEM_NEW, ERR_R_MALLOC_FAILURE);
176 ASN1err(ASN1_F_ASN1_ITEM_NEW, ASN1_R_AUX_ERROR);
177 ASN1_item_ex_free(pval, it);
182 static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
184 const ASN1_EXTERN_FUNCS *ef;
188 case ASN1_ITYPE_EXTERN:
190 if(ef && ef->asn1_ex_clear)
191 ef->asn1_ex_clear(pval, it);
196 case ASN1_ITYPE_PRIMITIVE:
198 asn1_template_clear(pval, it->templates);
200 asn1_primitive_clear(pval, it);
203 case ASN1_ITYPE_MSTRING:
204 asn1_primitive_clear(pval, it);
207 case ASN1_ITYPE_COMPAT:
208 case ASN1_ITYPE_CHOICE:
209 case ASN1_ITYPE_SEQUENCE:
216 int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
218 const ASN1_ITEM *it = tt->item;
219 if(tt->flags & ASN1_TFLG_OPTIONAL) {
220 asn1_template_clear(pval, tt);
223 /* If ANY DEFINED BY nothing to do */
225 if(tt->flags & ASN1_TFLG_ADB_MASK) {
229 /* If SET OF or SEQUENCE OF, its a STACK */
230 if(tt->flags & ASN1_TFLG_SK_MASK) {
231 STACK_OF(ASN1_VALUE) *skval;
232 skval = sk_ASN1_VALUE_new_null();
234 ASN1err(ASN1_F_ASN1_TEMPLATE_NEW, ERR_R_MALLOC_FAILURE);
237 *pval = (ASN1_VALUE *)skval;
240 /* Otherwise pass it back to the item routine */
241 return asn1_item_ex_combine_new(pval, it, tt->flags & ASN1_TFLG_COMBINE);
244 void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
246 /* If ADB or STACK just NULL the field */
247 if(tt->flags & (ASN1_TFLG_ADB_MASK|ASN1_TFLG_SK_MASK))
250 asn1_item_clear(pval, tt->item);
254 /* NB: could probably combine most of the real XXX_new() behaviour and junk all the old
258 int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
262 const ASN1_PRIMITIVE_FUNCS *pf;
264 if(pf && pf->prim_new) return pf->prim_new(pval, it);
265 if(!it || (it->itype == ASN1_ITYPE_MSTRING)) utype = -1;
266 else utype = it->utype;
269 *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);
273 *(ASN1_BOOLEAN *)pval = it->size;
277 *pval = (ASN1_VALUE *)1;
281 typ = OPENSSL_malloc(sizeof(ASN1_TYPE));
283 typ->value.ptr = NULL;
285 *pval = (ASN1_VALUE *)typ;
289 *pval = (ASN1_VALUE *)ASN1_STRING_type_new(utype);
296 void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
299 const ASN1_PRIMITIVE_FUNCS *pf;
303 pf->prim_clear(pval, it);
308 if(!it || (it->itype == ASN1_ITYPE_MSTRING)) utype = -1;
309 else utype = it->utype;
310 if(utype == V_ASN1_BOOLEAN)
311 *(ASN1_BOOLEAN *)pval = it->size;