bb5ea36b96
change the way ASN1 modules are exported. Still needs a bit of work for example the hack which a dummy function prototype to avoid compilers warning about multiple ;s.
226 lines
6.6 KiB
C
226 lines
6.6 KiB
C
/* tasn_fre.c */
|
|
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
|
|
* project 2000.
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3. All advertising materials mentioning features or use of this
|
|
* software must display the following acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* licensing@OpenSSL.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
* ====================================================================
|
|
*
|
|
* This product includes cryptographic software written by Eric Young
|
|
* (eay@cryptsoft.com). This product includes software written by Tim
|
|
* Hudson (tjh@cryptsoft.com).
|
|
*
|
|
*/
|
|
|
|
|
|
#include <stddef.h>
|
|
#include <openssl/asn1.h>
|
|
#include <openssl/asn1t.h>
|
|
#include <openssl/objects.h>
|
|
|
|
static void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine);
|
|
|
|
/* Free up an ASN1 structure */
|
|
|
|
void ASN1_item_free(ASN1_VALUE *val, const ASN1_ITEM *it)
|
|
{
|
|
asn1_item_combine_free(&val, it, 0);
|
|
}
|
|
|
|
void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
|
|
{
|
|
asn1_item_combine_free(pval, it, 0);
|
|
}
|
|
|
|
static void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine)
|
|
{
|
|
const ASN1_TEMPLATE *tt = NULL, *seqtt;
|
|
const ASN1_EXTERN_FUNCS *ef;
|
|
const ASN1_COMPAT_FUNCS *cf;
|
|
const ASN1_AUX *aux = it->funcs;
|
|
ASN1_aux_cb *asn1_cb;
|
|
int i;
|
|
if(!pval) return;
|
|
if((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval) return;
|
|
if(aux && aux->asn1_cb) asn1_cb = aux->asn1_cb;
|
|
else asn1_cb = 0;
|
|
|
|
switch(it->itype) {
|
|
|
|
case ASN1_ITYPE_PRIMITIVE:
|
|
if(it->templates) ASN1_template_free(pval, it->templates);
|
|
else ASN1_primitive_free(pval, it);
|
|
break;
|
|
|
|
case ASN1_ITYPE_MSTRING:
|
|
ASN1_primitive_free(pval, it);
|
|
break;
|
|
|
|
case ASN1_ITYPE_CHOICE:
|
|
if(asn1_cb) {
|
|
i = asn1_cb(ASN1_OP_FREE_PRE, pval, it);
|
|
if(i == 2) return;
|
|
}
|
|
i = asn1_get_choice_selector(pval, it);
|
|
if(asn1_cb) asn1_cb(ASN1_OP_FREE_PRE, pval, it);
|
|
if((i >= 0) && (i < it->tcount)) {
|
|
ASN1_VALUE **pchval;
|
|
tt = it->templates + i;
|
|
pchval = asn1_get_field_ptr(pval, tt);
|
|
ASN1_template_free(pchval, tt);
|
|
}
|
|
if(asn1_cb) asn1_cb(ASN1_OP_FREE_POST, pval, it);
|
|
if(!combine) {
|
|
OPENSSL_free(*pval);
|
|
*pval = NULL;
|
|
}
|
|
break;
|
|
|
|
case ASN1_ITYPE_COMPAT:
|
|
cf = it->funcs;
|
|
if(cf && cf->asn1_free) cf->asn1_free(*pval);
|
|
break;
|
|
|
|
case ASN1_ITYPE_EXTERN:
|
|
ef = it->funcs;
|
|
if(ef && ef->asn1_ex_free) ef->asn1_ex_free(pval, it);
|
|
break;
|
|
|
|
case ASN1_ITYPE_SEQUENCE:
|
|
if(asn1_do_lock(pval, -1, it) > 0) return;
|
|
if(asn1_cb) {
|
|
i = asn1_cb(ASN1_OP_FREE_PRE, pval, it);
|
|
if(i == 2) return;
|
|
}
|
|
asn1_enc_free(pval, it);
|
|
/* If we free up as normal we will invalidate any
|
|
* ANY DEFINED BY field and we wont be able to
|
|
* determine the type of the field it defines. So
|
|
* free up in reverse order.
|
|
*/
|
|
tt = it->templates + it->tcount - 1;
|
|
for(i = 0; i < it->tcount; tt--, i++) {
|
|
ASN1_VALUE **pseqval;
|
|
seqtt = asn1_do_adb(pval, tt, 0);
|
|
if(!seqtt) continue;
|
|
pseqval = asn1_get_field_ptr(pval, seqtt);
|
|
ASN1_template_free(pseqval, seqtt);
|
|
}
|
|
if(asn1_cb) asn1_cb(ASN1_OP_FREE_POST, pval, it);
|
|
if(!combine) {
|
|
OPENSSL_free(*pval);
|
|
*pval = NULL;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
|
|
{
|
|
int i;
|
|
if(tt->flags & ASN1_TFLG_SK_MASK) {
|
|
STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
|
|
for(i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
|
|
ASN1_VALUE *vtmp;
|
|
vtmp = sk_ASN1_VALUE_value(sk, i);
|
|
asn1_item_combine_free(&vtmp, ASN1_ITEM_ptr(tt->item), 0);
|
|
}
|
|
sk_ASN1_VALUE_free(sk);
|
|
*pval = NULL;
|
|
} else asn1_item_combine_free(pval, ASN1_ITEM_ptr(tt->item),
|
|
tt->flags & ASN1_TFLG_COMBINE);
|
|
}
|
|
|
|
void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
|
|
{
|
|
int utype;
|
|
if(it) {
|
|
const ASN1_PRIMITIVE_FUNCS *pf;
|
|
pf = it->funcs;
|
|
if(pf && pf->prim_free) {
|
|
pf->prim_free(pval, it);
|
|
return;
|
|
}
|
|
}
|
|
/* Special case: if 'it' is NULL free contents of ASN1_TYPE */
|
|
if(!it) {
|
|
ASN1_TYPE *typ = (ASN1_TYPE *)*pval;
|
|
utype = typ->type;
|
|
pval = (ASN1_VALUE **)&typ->value.ptr;
|
|
if(!*pval) return;
|
|
} else if(it->itype == ASN1_ITYPE_MSTRING) {
|
|
utype = -1;
|
|
if(!*pval) return;
|
|
} else {
|
|
utype = it->utype;
|
|
if((utype != V_ASN1_BOOLEAN) && !*pval) return;
|
|
}
|
|
|
|
switch(utype) {
|
|
case V_ASN1_OBJECT:
|
|
ASN1_OBJECT_free((ASN1_OBJECT *)*pval);
|
|
break;
|
|
|
|
case V_ASN1_BOOLEAN:
|
|
*(ASN1_BOOLEAN *)pval = it->size;
|
|
return;
|
|
|
|
case V_ASN1_NULL:
|
|
break;
|
|
|
|
case V_ASN1_ANY:
|
|
ASN1_primitive_free(pval, NULL);
|
|
OPENSSL_free(*pval);
|
|
break;
|
|
|
|
default:
|
|
ASN1_STRING_free((ASN1_STRING *)*pval);
|
|
*pval = NULL;
|
|
break;
|
|
}
|
|
*pval = NULL;
|
|
}
|