tasn_utl.c revision 9dc0df1bac950d6e491f9a7c7e4888f2b301cb15
/* tasn_utl.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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
* 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 <string.h>
/* Utility functions for manipulating fields and offsets */
/* Add 'offset' to 'addr' */
/* Given an ASN1_ITEM CHOICE type return
* the selector value
*/
{
return *sel;
}
/* Given an ASN1_ITEM CHOICE type set
* the selector value, return old value.
*/
{
return ret;
}
/* Do reference counting. The value 'op' decides what to do.
* if it is +1 then the count is incremented. If op is 0 count is
* set to 1. If op is -1 count is decremented and the return value
* is the current refrence count or 0 if no reference count exists.
*/
{
return 0;
return 0;
if (op == 0)
{
*lck = 1;
return 1;
}
#ifdef REF_PRINT
#endif
#ifdef REF_CHECK
if (ret < 0)
#endif
return ret;
}
{
return NULL;
return NULL;
}
{
if (enc)
{
}
}
{
if (enc)
{
}
}
{
if (!enc)
return 1;
return 0;
return 1;
}
{
return 0;
if (out)
{
}
if (len)
return 1;
}
/* Given an ASN1_TEMPLATE get a pointer to a field */
{
return pval;
/* NOTE for BOOLEAN types the field is just a plain
* int so we can't return int **, so settle for
* (int *).
*/
return pvaltmp;
}
/* Handle ANY DEFINED BY template, find the selector, look up
* the relevant ASN1_TEMPLATE in the table and return it.
*/
int nullerr)
{
const ASN1_ADB_TABLE *atbl;
long selector;
ASN1_VALUE **sfld;
int i;
return tt;
/* Else ANY DEFINED BY ... get the table */
/* Get the selector field */
/* Check if NULL */
if (!sfld)
{
goto err;
}
/* Convert type to a long:
* NB: don't check for NID_undef here because it
* might be a legitimate value in the table
*/
else
/* Try to find matching entry in table
* Maybe should check application types first to
* allow application override? Might also be useful
* to have a flag which indicates table is sorted and
* we can do a binary search. For now stick to a
* linear search.
*/
/* FIXME: need to search application table too */
/* No match, return default type */
if (!adb->default_tt)
goto err;
return adb->default_tt;
err:
/* FIXME: should log the value or OID of unsupported type */
if (nullerr)
return NULL;
}