a_bitstr.c revision 9dc0df1bac950d6e491f9a7c7e4888f2b301cb15
/* crypto/asn1/a_bitstr.c */
/* 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"
{ return M_ASN1_BIT_STRING_set(x, d, len); }
{
unsigned char *p,*d;
if (a == NULL) return(0);
if (len > 0)
{
if (a->flags & ASN1_STRING_FLAG_BITS_LEFT)
{
}
else
{
{
}
if (j & 0x01) bits=0;
else bits=0; /* should not happen */
}
}
else
bits=0;
p= *pp;
*(p++)=(unsigned char)bits;
d=a->data;
p+=len;
*pp=p;
return(ret);
}
{
const unsigned char *p;
unsigned char *s;
int i;
if (len < 1)
{
goto err;
}
{
}
else
ret=(*a);
p= *pp;
i= *(p++);
/* We do this to preserve the settings. If we modify
* the settings, via the _set_bit function, we will recalculate
* on output */
{
s=(unsigned char *)OPENSSL_malloc((int)len);
if (s == NULL)
{
goto err;
}
p+=len;
}
else
s=NULL;
*pp=p;
return(ret);
err:
return(NULL);
}
/* These next 2 functions from Goetz Babin-Ebell <babinebell@trustcenter.de>
*/
{
int w,v,iv;
unsigned char *c;
w=n/8;
v=1<<(7-(n&0x07));
iv= ~v;
if (!value) v=0;
if (a == NULL)
return 0;
{
c=(unsigned char *)OPENSSL_malloc(w+1);
else
c=(unsigned char *)OPENSSL_realloc_clean(a->data,
a->length,
w+1);
if (c == NULL)
{
return 0;
}
a->data=c;
a->length=w+1;
}
a->length--;
return(1);
}
int ASN1_BIT_STRING_get_bit(ASN1_BIT_STRING *a, int n)
{
int w,v;
w=n/8;
v=1<<(7-(n&0x07));
return(0);
return((a->data[w]&v) != 0);
}