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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/asn1/tasn_new.c
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>
67 static int asn1_item_ex_combine_new(ASN1_VALUE
**pval
, const ASN1_ITEM
*it
, int combine
);
68 static void asn1_item_clear(ASN1_VALUE
**pval
, const ASN1_ITEM
*it
);
69 static void asn1_template_clear(ASN1_VALUE
**pval
, const ASN1_TEMPLATE
*tt
);
70 void asn1_primitive_clear(ASN1_VALUE
**pval
, const ASN1_ITEM
*it
);
72 ASN1_VALUE
*ASN1_item_new(const ASN1_ITEM
*it
)
74 ASN1_VALUE
*ret
= NULL
;
75 if(ASN1_item_ex_new(&ret
, it
) > 0) return ret
;
79 /* Allocate an ASN1 structure */
81 int ASN1_item_ex_new(ASN1_VALUE
**pval
, const ASN1_ITEM
*it
)
83 return asn1_item_ex_combine_new(pval
, it
, 0);
86 static int asn1_item_ex_combine_new(ASN1_VALUE
**pval
, const ASN1_ITEM
*it
, int combine
)
88 const ASN1_TEMPLATE
*tt
= NULL
;
89 const ASN1_COMPAT_FUNCS
*cf
;
90 const ASN1_EXTERN_FUNCS
*ef
;
91 const ASN1_AUX
*aux
= it
->funcs
;
95 if(aux
&& aux
->asn1_cb
) asn1_cb
= aux
->asn1_cb
;
98 if(!combine
) *pval
= NULL
;
101 if(it
->sname
) CRYPTO_push_info(it
->sname
);
106 case ASN1_ITYPE_EXTERN
:
108 if(ef
&& ef
->asn1_ex_new
) {
109 if(!ef
->asn1_ex_new(pval
, it
))
114 case ASN1_ITYPE_COMPAT
:
116 if(cf
&& cf
->asn1_new
) {
117 *pval
= cf
->asn1_new();
118 if(!*pval
) goto memerr
;
122 case ASN1_ITYPE_PRIMITIVE
:
124 if(!ASN1_template_new(pval
, it
->templates
))
127 if(!ASN1_primitive_new(pval
, it
))
132 case ASN1_ITYPE_MSTRING
:
133 if(!ASN1_primitive_new(pval
, it
))
137 case ASN1_ITYPE_CHOICE
:
139 i
= asn1_cb(ASN1_OP_NEW_PRE
, pval
, it
);
143 if(it
->sname
) CRYPTO_pop_info();
149 *pval
= OPENSSL_malloc(it
->size
);
150 if(!*pval
) goto memerr
;
151 memset(*pval
, 0, it
->size
);
153 asn1_set_choice_selector(pval
, -1, it
);
154 if(asn1_cb
&& !asn1_cb(ASN1_OP_NEW_POST
, pval
, it
))
158 case ASN1_ITYPE_NDEF_SEQUENCE
:
159 case ASN1_ITYPE_SEQUENCE
:
161 i
= asn1_cb(ASN1_OP_NEW_PRE
, pval
, it
);
165 if(it
->sname
) CRYPTO_pop_info();
171 *pval
= OPENSSL_malloc(it
->size
);
172 if(!*pval
) goto memerr
;
173 memset(*pval
, 0, it
->size
);
174 asn1_do_lock(pval
, 0, it
);
175 asn1_enc_init(pval
, it
);
177 for(i
= 0, tt
= it
->templates
; i
< it
->tcount
; tt
++, i
++) {
178 pseqval
= asn1_get_field_ptr(pval
, tt
);
179 if(!ASN1_template_new(pseqval
, tt
)) goto memerr
;
181 if(asn1_cb
&& !asn1_cb(ASN1_OP_NEW_POST
, pval
, it
))
186 if(it
->sname
) CRYPTO_pop_info();
191 ASN1err(ASN1_F_ASN1_ITEM_NEW
, ERR_R_MALLOC_FAILURE
);
193 if(it
->sname
) CRYPTO_pop_info();
198 ASN1err(ASN1_F_ASN1_ITEM_NEW
, ASN1_R_AUX_ERROR
);
199 ASN1_item_ex_free(pval
, it
);
201 if(it
->sname
) CRYPTO_pop_info();
207 static void asn1_item_clear(ASN1_VALUE
**pval
, const ASN1_ITEM
*it
)
209 const ASN1_EXTERN_FUNCS
*ef
;
213 case ASN1_ITYPE_EXTERN
:
215 if(ef
&& ef
->asn1_ex_clear
)
216 ef
->asn1_ex_clear(pval
, it
);
221 case ASN1_ITYPE_PRIMITIVE
:
223 asn1_template_clear(pval
, it
->templates
);
225 asn1_primitive_clear(pval
, it
);
228 case ASN1_ITYPE_MSTRING
:
229 asn1_primitive_clear(pval
, it
);
232 case ASN1_ITYPE_COMPAT
:
233 case ASN1_ITYPE_CHOICE
:
234 case ASN1_ITYPE_SEQUENCE
:
235 case ASN1_ITYPE_NDEF_SEQUENCE
:
242 int ASN1_template_new(ASN1_VALUE
**pval
, const ASN1_TEMPLATE
*tt
)
244 const ASN1_ITEM
*it
= ASN1_ITEM_ptr(tt
->item
);
246 if(tt
->flags
& ASN1_TFLG_OPTIONAL
) {
247 asn1_template_clear(pval
, tt
);
250 /* If ANY DEFINED BY nothing to do */
252 if(tt
->flags
& ASN1_TFLG_ADB_MASK
) {
257 if(tt
->field_name
) CRYPTO_push_info(tt
->field_name
);
259 /* If SET OF or SEQUENCE OF, its a STACK */
260 if(tt
->flags
& ASN1_TFLG_SK_MASK
) {
261 STACK_OF(ASN1_VALUE
) *skval
;
262 skval
= sk_ASN1_VALUE_new_null();
264 ASN1err(ASN1_F_ASN1_TEMPLATE_NEW
, ERR_R_MALLOC_FAILURE
);
268 *pval
= (ASN1_VALUE
*)skval
;
272 /* Otherwise pass it back to the item routine */
273 ret
= asn1_item_ex_combine_new(pval
, it
, tt
->flags
& ASN1_TFLG_COMBINE
);
276 if(it
->sname
) CRYPTO_pop_info();
281 static void asn1_template_clear(ASN1_VALUE
**pval
, const ASN1_TEMPLATE
*tt
)
283 /* If ADB or STACK just NULL the field */
284 if(tt
->flags
& (ASN1_TFLG_ADB_MASK
|ASN1_TFLG_SK_MASK
))
287 asn1_item_clear(pval
, ASN1_ITEM_ptr(tt
->item
));
291 /* NB: could probably combine most of the real XXX_new() behaviour and junk all the old
295 int ASN1_primitive_new(ASN1_VALUE
**pval
, const ASN1_ITEM
*it
)
299 const ASN1_PRIMITIVE_FUNCS
*pf
;
301 if(pf
&& pf
->prim_new
) return pf
->prim_new(pval
, it
);
302 if(!it
|| (it
->itype
== ASN1_ITYPE_MSTRING
)) utype
= -1;
303 else utype
= it
->utype
;
306 *pval
= (ASN1_VALUE
*)OBJ_nid2obj(NID_undef
);
310 *(ASN1_BOOLEAN
*)pval
= it
->size
;
314 *pval
= (ASN1_VALUE
*)1;
318 typ
= OPENSSL_malloc(sizeof(ASN1_TYPE
));
320 typ
->value
.ptr
= NULL
;
322 *pval
= (ASN1_VALUE
*)typ
;
326 *pval
= (ASN1_VALUE
*)ASN1_STRING_type_new(utype
);
333 void asn1_primitive_clear(ASN1_VALUE
**pval
, const ASN1_ITEM
*it
)
336 const ASN1_PRIMITIVE_FUNCS
*pf
;
340 pf
->prim_clear(pval
, it
);
345 if(!it
|| (it
->itype
== ASN1_ITYPE_MSTRING
)) utype
= -1;
346 else utype
= it
->utype
;
347 if(utype
== V_ASN1_BOOLEAN
)
348 *(ASN1_BOOLEAN
*)pval
= it
->size
;