a_bytes.c revision 9dc0df1bac950d6e491f9a7c7e4888f2b301cb15
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* 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 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
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS 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 AUTHOR OR 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.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include "cryptlib.h"
/* type is a 'bitmap' of acceptable string types.
*/
{
const unsigned char *p;
unsigned char *s;
long len;
int i=0;
p= *pp;
if (tag >= 32)
{
goto err;
}
{
goto err;
}
/* If a bit-string, exit early */
if (tag == V_ASN1_BIT_STRING)
{
}
else
ret=(*a);
if (len != 0)
{
if (s == NULL)
{
goto err;
}
s[len]='\0';
p+=len;
}
else
s=NULL;
*pp=p;
return(ret);
err:
return(NULL);
}
{
int ret,r,constructed;
unsigned char *p;
if (a == NULL) return(0);
if (tag == V_ASN1_BIT_STRING)
return(i2d_ASN1_BIT_STRING(a,pp));
p= *pp;
constructed=1;
else
constructed=0;
p+=a->length;
*pp= p;
return(r);
}
{
const unsigned char *p;
unsigned char *s;
long len;
int i=0;
{
}
else
ret=(*a);
p= *pp;
if (inf & 0x80)
{
goto err;
}
{
goto err;
}
if (inf & V_ASN1_CONSTRUCTED)
{
c.p=p;
if (!asn1_collate_primitive(ret,&c))
goto err;
else
{
p=c.p;
}
}
else
{
if (len != 0)
{
{
if (s == NULL)
{
goto err;
}
}
else
s[len] = '\0';
p+=len;
}
else
{
s=NULL;
}
}
*pp=p;
return(ret);
err:
return(NULL);
}
/* We are about to parse 0..n d2i_ASN1_bytes objects, we are to collapse
* them into the one structure that is then returned */
/* There have been a few bug fixes for this function from
* Paul Keogh <paul.keogh@sse.ie>, many thanks to him */
{
BUF_MEM b;
int num;
b.length=0;
b.max=0;
if (a == NULL)
{
goto err;
}
num=0;
for (;;)
{
if (c->inf & 1)
{
c->eos=ASN1_const_check_infinite_end(&c->p,
(long)(c->max-c->p));
if (c->eos) break;
}
else
{
if (c->slen <= 0) break;
}
c->q=c->p;
== NULL)
{
c->error=ERR_R_ASN1_LIB;
goto err;
}
{
c->error=ERR_R_BUF_LIB;
goto err;
}
if (!(c->inf & 1))
c->slen-=(c->p-c->q);
}
if (!asn1_const_Finish(c)) goto err;
return(1);
err:
return(0);
}