]>
git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/asn1/tasn_fre.c
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 2000 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/asn1t.h>
63 #include <openssl/objects.h>
65 static void asn1_item_combine_free(ASN1_VALUE
**pval
, const ASN1_ITEM
*it
,
68 /* Free up an ASN1 structure */
70 void ASN1_item_free(ASN1_VALUE
*val
, const ASN1_ITEM
*it
)
72 asn1_item_combine_free(&val
, it
, 0);
75 void ASN1_item_ex_free(ASN1_VALUE
**pval
, const ASN1_ITEM
*it
)
77 asn1_item_combine_free(pval
, it
, 0);
80 static void asn1_item_combine_free(ASN1_VALUE
**pval
, const ASN1_ITEM
*it
,
83 const ASN1_TEMPLATE
*tt
= NULL
, *seqtt
;
84 const ASN1_EXTERN_FUNCS
*ef
;
85 const ASN1_COMPAT_FUNCS
*cf
;
86 const ASN1_AUX
*aux
= it
->funcs
;
91 if ((it
->itype
!= ASN1_ITYPE_PRIMITIVE
) && !*pval
)
93 if (aux
&& aux
->asn1_cb
)
94 asn1_cb
= aux
->asn1_cb
;
100 case ASN1_ITYPE_PRIMITIVE
:
102 ASN1_template_free(pval
, it
->templates
);
104 ASN1_primitive_free(pval
, it
);
107 case ASN1_ITYPE_MSTRING
:
108 ASN1_primitive_free(pval
, it
);
111 case ASN1_ITYPE_CHOICE
:
113 i
= asn1_cb(ASN1_OP_FREE_PRE
, pval
, it
, NULL
);
117 i
= asn1_get_choice_selector(pval
, it
);
118 if ((i
>= 0) && (i
< it
->tcount
)) {
120 tt
= it
->templates
+ i
;
121 pchval
= asn1_get_field_ptr(pval
, tt
);
122 ASN1_template_free(pchval
, tt
);
125 asn1_cb(ASN1_OP_FREE_POST
, pval
, it
, NULL
);
132 case ASN1_ITYPE_COMPAT
:
134 if (cf
&& cf
->asn1_free
)
135 cf
->asn1_free(*pval
);
138 case ASN1_ITYPE_EXTERN
:
140 if (ef
&& ef
->asn1_ex_free
)
141 ef
->asn1_ex_free(pval
, it
);
144 case ASN1_ITYPE_NDEF_SEQUENCE
:
145 case ASN1_ITYPE_SEQUENCE
:
146 if (asn1_do_lock(pval
, -1, it
) > 0)
149 i
= asn1_cb(ASN1_OP_FREE_PRE
, pval
, it
, NULL
);
153 asn1_enc_free(pval
, it
);
155 * If we free up as normal we will invalidate any ANY DEFINED BY
156 * field and we wont be able to determine the type of the field it
157 * defines. So free up in reverse order.
159 tt
= it
->templates
+ it
->tcount
- 1;
160 for (i
= 0; i
< it
->tcount
; tt
--, i
++) {
161 ASN1_VALUE
**pseqval
;
162 seqtt
= asn1_do_adb(pval
, tt
, 0);
165 pseqval
= asn1_get_field_ptr(pval
, seqtt
);
166 ASN1_template_free(pseqval
, seqtt
);
169 asn1_cb(ASN1_OP_FREE_POST
, pval
, it
, NULL
);
178 void ASN1_template_free(ASN1_VALUE
**pval
, const ASN1_TEMPLATE
*tt
)
181 if (tt
->flags
& ASN1_TFLG_SK_MASK
) {
182 STACK_OF(ASN1_VALUE
) *sk
= (STACK_OF(ASN1_VALUE
) *)*pval
;
183 for (i
= 0; i
< sk_ASN1_VALUE_num(sk
); i
++) {
185 vtmp
= sk_ASN1_VALUE_value(sk
, i
);
186 asn1_item_combine_free(&vtmp
, ASN1_ITEM_ptr(tt
->item
), 0);
188 sk_ASN1_VALUE_free(sk
);
191 asn1_item_combine_free(pval
, ASN1_ITEM_ptr(tt
->item
),
192 tt
->flags
& ASN1_TFLG_COMBINE
);
195 void ASN1_primitive_free(ASN1_VALUE
**pval
, const ASN1_ITEM
*it
)
199 const ASN1_PRIMITIVE_FUNCS
*pf
;
201 if (pf
&& pf
->prim_free
) {
202 pf
->prim_free(pval
, it
);
206 /* Special case: if 'it' is NULL free contents of ASN1_TYPE */
208 ASN1_TYPE
*typ
= (ASN1_TYPE
*)*pval
;
210 pval
= &typ
->value
.asn1_value
;
213 } else if (it
->itype
== ASN1_ITYPE_MSTRING
) {
219 if ((utype
!= V_ASN1_BOOLEAN
) && !*pval
)
225 ASN1_OBJECT_free((ASN1_OBJECT
*)*pval
);
230 *(ASN1_BOOLEAN
*)pval
= it
->size
;
232 *(ASN1_BOOLEAN
*)pval
= -1;
239 ASN1_primitive_free(pval
, NULL
);
244 ASN1_STRING_free((ASN1_STRING
*)*pval
);