119 lines
3.8 KiB
C
119 lines
3.8 KiB
C
/* a_null.c */
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/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
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* project 1999.
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*/
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/* ====================================================================
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* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/asn1.h>
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/* ASN1 functions for NULL type. For compatibility with other ASN1 code
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* it returns a pointer to an "ASN1_NULL" structure. The new/free functions
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* don't need to do any allocating because nothing is stored in a NULL.
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*/
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int i2d_ASN1_NULL(ASN1_NULL *a, unsigned char **pp)
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{
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if(!a) return 0;
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if (pp) ASN1_put_object(pp,0,0,V_ASN1_NULL,V_ASN1_UNIVERSAL);
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return 2;
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}
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ASN1_NULL *d2i_ASN1_NULL(ASN1_NULL **a, unsigned char **pp, long length)
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{
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ASN1_NULL *ret = NULL;
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unsigned char *p;
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long len;
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int inf,tag,xclass;
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int i=0;
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p= *pp;
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inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
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if (inf & 0x80)
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{
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i=ASN1_R_BAD_OBJECT_HEADER;
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goto err;
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}
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if (tag != V_ASN1_NULL)
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{
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i=ASN1_R_EXPECTING_A_NULL;
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goto err;
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}
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if (len != 0)
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{
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i=ASN1_R_NULL_IS_WRONG_LENGTH;
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goto err;
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}
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ret=(ASN1_NULL *)1;
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if (a != NULL) (*a)=ret;
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*pp=p;
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return(ret);
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err:
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ASN1err(ASN1_F_D2I_ASN1_NULL,i);
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return(ret);
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}
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ASN1_NULL *ASN1_NULL_new(void)
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{
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return (ASN1_NULL *)1;
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}
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void ASN1_NULL_free(ASN1_NULL *a)
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{
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return;
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}
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