/*====================================================================*
*
* Copyright (c) 2013 Qualcomm Atheros, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted (subject to the limitations
* in the disclaimer below) provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of Qualcomm Atheros nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
* GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
* COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER
* 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.
*
*--------------------------------------------------------------------*/
/*====================================================================*
*
* signed SHA256Match (signed fd, const uint8_t digest[]);
*
* SHA256.h
*
* search a fingerprint file for the given digest; return true
* on success and false on failure; digests in the fingerprint
* file must be upper case because comparison is binary;
*
*
*--------------------------------------------------------------------*/
#ifndef SHA256MATCH_SOURCE
#define SHA256MATCH_SOURCE
#include <unistd.h>
#include <errno.h>
#include "../tools/number.h"
#include "../key/SHA256.h"
signed SHA256Match (signed fd, const uint8_t digest [])
{
char string [SHA256_DIGEST_LENGTH << 1];
char buffer [SHA256_DIGEST_LENGTH << 1];
signed length = 0;
while (length < (signed)(sizeof (string)))
{
string [length++] = DIGITS_HEX [(*digest >> 4) & 0x0F];
string [length++] = DIGITS_HEX [(*digest >> 0) & 0x0F];
digest++;
}
while (read (fd, buffer, sizeof (buffer)) == sizeof (buffer))
{
char c;
if (!memcmp (string, buffer, sizeof (string)))
{
return (1);
}
while (read (fd, &c, sizeof (c)) == sizeof (c))
{
if (c == '\n')
{
break;
}
}
}
return (0);
}
#endif