397 lines
9.3 KiB
C
397 lines
9.3 KiB
C
|
/* tasn_new.c */
|
||
|
|
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
|
||
|
|
* project 2000.
|
||
|
|
*/
|
||
|
|
/* ====================================================================
|
||
|
|
* Copyright (c) 2000-2004 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/objects.h>
|
||
|
|
#include <openssl/err.h>
|
||
|
|
#include <openssl/asn1t.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
|
||
|
|
int combine);
|
||
|
|
static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
|
||
|
|
static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
|
||
|
|
static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
|
||
|
|
|
||
|
|
ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)
|
||
|
|
{
|
||
|
|
ASN1_VALUE *ret = NULL;
|
||
|
|
if (ASN1_item_ex_new(&ret, it) > 0)
|
||
|
|
return ret;
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Allocate an ASN1 structure */
|
||
|
|
|
||
|
|
int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
|
||
|
|
{
|
||
|
|
return asn1_item_ex_combine_new(pval, it, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int asn1_item_ex_combine_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
|
||
|
|
int combine)
|
||
|
|
{
|
||
|
|
const ASN1_TEMPLATE *tt = NULL;
|
||
|
|
const ASN1_COMPAT_FUNCS *cf;
|
||
|
|
const ASN1_EXTERN_FUNCS *ef;
|
||
|
|
const ASN1_AUX *aux = it->funcs;
|
||
|
|
ASN1_aux_cb *asn1_cb;
|
||
|
|
ASN1_VALUE **pseqval;
|
||
|
|
int i;
|
||
|
|
if (aux && aux->asn1_cb)
|
||
|
|
asn1_cb = aux->asn1_cb;
|
||
|
|
else
|
||
|
|
asn1_cb = 0;
|
||
|
|
|
||
|
|
if (!combine) *pval = NULL;
|
||
|
|
|
||
|
|
#ifdef CRYPTO_MDEBUG
|
||
|
|
if (it->sname)
|
||
|
|
CRYPTO_push_info(it->sname);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
switch(it->itype)
|
||
|
|
{
|
||
|
|
|
||
|
|
case ASN1_ITYPE_EXTERN:
|
||
|
|
ef = it->funcs;
|
||
|
|
if (ef && ef->asn1_ex_new)
|
||
|
|
{
|
||
|
|
if (!ef->asn1_ex_new(pval, it))
|
||
|
|
goto memerr;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ASN1_ITYPE_COMPAT:
|
||
|
|
cf = it->funcs;
|
||
|
|
if (cf && cf->asn1_new) {
|
||
|
|
*pval = cf->asn1_new();
|
||
|
|
if (!*pval)
|
||
|
|
goto memerr;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ASN1_ITYPE_PRIMITIVE:
|
||
|
|
if (it->templates)
|
||
|
|
{
|
||
|
|
if (!ASN1_template_new(pval, it->templates))
|
||
|
|
goto memerr;
|
||
|
|
}
|
||
|
|
else if (!ASN1_primitive_new(pval, it))
|
||
|
|
goto memerr;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ASN1_ITYPE_MSTRING:
|
||
|
|
if (!ASN1_primitive_new(pval, it))
|
||
|
|
goto memerr;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ASN1_ITYPE_CHOICE:
|
||
|
|
if (asn1_cb)
|
||
|
|
{
|
||
|
|
i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
|
||
|
|
if (!i)
|
||
|
|
goto auxerr;
|
||
|
|
if (i==2)
|
||
|
|
{
|
||
|
|
#ifdef CRYPTO_MDEBUG
|
||
|
|
if (it->sname)
|
||
|
|
CRYPTO_pop_info();
|
||
|
|
#endif
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!combine)
|
||
|
|
{
|
||
|
|
*pval = OPENSSL_malloc(it->size);
|
||
|
|
if (!*pval)
|
||
|
|
goto memerr;
|
||
|
|
memset(*pval, 0, it->size);
|
||
|
|
}
|
||
|
|
asn1_set_choice_selector(pval, -1, it);
|
||
|
|
if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
|
||
|
|
goto auxerr;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ASN1_ITYPE_NDEF_SEQUENCE:
|
||
|
|
case ASN1_ITYPE_SEQUENCE:
|
||
|
|
if (asn1_cb)
|
||
|
|
{
|
||
|
|
i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
|
||
|
|
if (!i)
|
||
|
|
goto auxerr;
|
||
|
|
if (i==2)
|
||
|
|
{
|
||
|
|
#ifdef CRYPTO_MDEBUG
|
||
|
|
if (it->sname)
|
||
|
|
CRYPTO_pop_info();
|
||
|
|
#endif
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!combine)
|
||
|
|
{
|
||
|
|
*pval = OPENSSL_malloc(it->size);
|
||
|
|
if (!*pval)
|
||
|
|
goto memerr;
|
||
|
|
memset(*pval, 0, it->size);
|
||
|
|
asn1_do_lock(pval, 0, it);
|
||
|
|
asn1_enc_init(pval, it);
|
||
|
|
}
|
||
|
|
for (i = 0, tt = it->templates; i < it->tcount; tt++, i++)
|
||
|
|
{
|
||
|
|
pseqval = asn1_get_field_ptr(pval, tt);
|
||
|
|
if (!ASN1_template_new(pseqval, tt))
|
||
|
|
goto memerr;
|
||
|
|
}
|
||
|
|
if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
|
||
|
|
goto auxerr;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
#ifdef CRYPTO_MDEBUG
|
||
|
|
if (it->sname) CRYPTO_pop_info();
|
||
|
|
#endif
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
memerr:
|
||
|
|
ASN1err(ASN1_F_ASN1_ITEM_EX_COMBINE_NEW, ERR_R_MALLOC_FAILURE);
|
||
|
|
#ifdef CRYPTO_MDEBUG
|
||
|
|
if (it->sname) CRYPTO_pop_info();
|
||
|
|
#endif
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
auxerr:
|
||
|
|
ASN1err(ASN1_F_ASN1_ITEM_EX_COMBINE_NEW, ASN1_R_AUX_ERROR);
|
||
|
|
ASN1_item_ex_free(pval, it);
|
||
|
|
#ifdef CRYPTO_MDEBUG
|
||
|
|
if (it->sname) CRYPTO_pop_info();
|
||
|
|
#endif
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
|
||
|
|
{
|
||
|
|
const ASN1_EXTERN_FUNCS *ef;
|
||
|
|
|
||
|
|
switch(it->itype)
|
||
|
|
{
|
||
|
|
|
||
|
|
case ASN1_ITYPE_EXTERN:
|
||
|
|
ef = it->funcs;
|
||
|
|
if (ef && ef->asn1_ex_clear)
|
||
|
|
ef->asn1_ex_clear(pval, it);
|
||
|
|
else *pval = NULL;
|
||
|
|
break;
|
||
|
|
|
||
|
|
|
||
|
|
case ASN1_ITYPE_PRIMITIVE:
|
||
|
|
if (it->templates)
|
||
|
|
asn1_template_clear(pval, it->templates);
|
||
|
|
else
|
||
|
|
asn1_primitive_clear(pval, it);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ASN1_ITYPE_MSTRING:
|
||
|
|
asn1_primitive_clear(pval, it);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ASN1_ITYPE_COMPAT:
|
||
|
|
case ASN1_ITYPE_CHOICE:
|
||
|
|
case ASN1_ITYPE_SEQUENCE:
|
||
|
|
case ASN1_ITYPE_NDEF_SEQUENCE:
|
||
|
|
*pval = NULL;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
|
||
|
|
{
|
||
|
|
const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);
|
||
|
|
int ret;
|
||
|
|
if (tt->flags & ASN1_TFLG_OPTIONAL)
|
||
|
|
{
|
||
|
|
asn1_template_clear(pval, tt);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
/* If ANY DEFINED BY nothing to do */
|
||
|
|
|
||
|
|
if (tt->flags & ASN1_TFLG_ADB_MASK)
|
||
|
|
{
|
||
|
|
*pval = NULL;
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
#ifdef CRYPTO_MDEBUG
|
||
|
|
if (tt->field_name)
|
||
|
|
CRYPTO_push_info(tt->field_name);
|
||
|
|
#endif
|
||
|
|
/* If SET OF or SEQUENCE OF, its a STACK */
|
||
|
|
if (tt->flags & ASN1_TFLG_SK_MASK)
|
||
|
|
{
|
||
|
|
STACK_OF(ASN1_VALUE) *skval;
|
||
|
|
skval = sk_ASN1_VALUE_new_null();
|
||
|
|
if (!skval)
|
||
|
|
{
|
||
|
|
ASN1err(ASN1_F_ASN1_TEMPLATE_NEW, ERR_R_MALLOC_FAILURE);
|
||
|
|
ret = 0;
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
*pval = (ASN1_VALUE *)skval;
|
||
|
|
ret = 1;
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
/* Otherwise pass it back to the item routine */
|
||
|
|
ret = asn1_item_ex_combine_new(pval, it, tt->flags & ASN1_TFLG_COMBINE);
|
||
|
|
done:
|
||
|
|
#ifdef CRYPTO_MDEBUG
|
||
|
|
if (it->sname)
|
||
|
|
CRYPTO_pop_info();
|
||
|
|
#endif
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
|
||
|
|
{
|
||
|
|
/* If ADB or STACK just NULL the field */
|
||
|
|
if (tt->flags & (ASN1_TFLG_ADB_MASK|ASN1_TFLG_SK_MASK))
|
||
|
|
*pval = NULL;
|
||
|
|
else
|
||
|
|
asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* NB: could probably combine most of the real XXX_new() behaviour and junk
|
||
|
|
* all the old functions.
|
||
|
|
*/
|
||
|
|
|
||
|
|
int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
|
||
|
|
{
|
||
|
|
ASN1_TYPE *typ;
|
||
|
|
ASN1_STRING *str;
|
||
|
|
int utype;
|
||
|
|
|
||
|
|
if (it && it->funcs)
|
||
|
|
{
|
||
|
|
const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
|
||
|
|
if (pf->prim_new)
|
||
|
|
return pf->prim_new(pval, it);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!it || (it->itype == ASN1_ITYPE_MSTRING))
|
||
|
|
utype = -1;
|
||
|
|
else
|
||
|
|
utype = it->utype;
|
||
|
|
switch(utype)
|
||
|
|
{
|
||
|
|
case V_ASN1_OBJECT:
|
||
|
|
*pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
case V_ASN1_BOOLEAN:
|
||
|
|
*(ASN1_BOOLEAN *)pval = it->size;
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
case V_ASN1_NULL:
|
||
|
|
*pval = (ASN1_VALUE *)1;
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
case V_ASN1_ANY:
|
||
|
|
typ = OPENSSL_malloc(sizeof(ASN1_TYPE));
|
||
|
|
if (!typ)
|
||
|
|
return 0;
|
||
|
|
typ->value.ptr = NULL;
|
||
|
|
typ->type = -1;
|
||
|
|
*pval = (ASN1_VALUE *)typ;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
str = ASN1_STRING_type_new(utype);
|
||
|
|
if (it->itype == ASN1_ITYPE_MSTRING && str)
|
||
|
|
str->flags |= ASN1_STRING_FLAG_MSTRING;
|
||
|
|
*pval = (ASN1_VALUE *)str;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (*pval)
|
||
|
|
return 1;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
|
||
|
|
{
|
||
|
|
int utype;
|
||
|
|
if (it && it->funcs)
|
||
|
|
{
|
||
|
|
const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
|
||
|
|
if (pf->prim_clear)
|
||
|
|
pf->prim_clear(pval, it);
|
||
|
|
else
|
||
|
|
*pval = NULL;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (!it || (it->itype == ASN1_ITYPE_MSTRING))
|
||
|
|
utype = -1;
|
||
|
|
else
|
||
|
|
utype = it->utype;
|
||
|
|
if (utype == V_ASN1_BOOLEAN)
|
||
|
|
*(ASN1_BOOLEAN *)pval = it->size;
|
||
|
|
else *pval = NULL;
|
||
|
|
}
|