/*====================================================================*
*
* 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.
*
*--------------------------------------------------------------------*/
/*====================================================================*
*
* pskey.c - print prescaler key
*
*
* Contributor(s):
* Charles Maier <cmaier@qca.qualcomm.com>
*
*--------------------------------------------------------------------*/
/*====================================================================*
* system header files;
*--------------------------------------------------------------------*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/stat.h>
/*====================================================================*
* custom header files;
*--------------------------------------------------------------------*/
#include "../tools/getoptv.h"
#include "../tools/number.h"
#include "../tools/types.h"
#include "../tools/error.h"
#include "../tools/files.h"
#include "../tools/flags.h"
#include "../key/HPAVKey.h"
#include "../key/SHA256.h"
#include "../pib/pib.h"
/*====================================================================*
* custom source files;
*--------------------------------------------------------------------*/
#ifndef MAKEFILE
#include "../tools/getoptv.c"
#include "../tools/putoptv.c"
#include "../tools/version.c"
#include "../tools/fdchecksum32.c"
#include "../tools/hexdecode.c"
#include "../tools/hexstring.c"
#include "../tools/hexout.c"
#include "../tools/error.c"
#endif
#ifndef MAKEFILE
#include "../pib/pibfile1.c"
#endif
#ifndef MAKEFILE
#include "../key/SHA256Reset.c"
#include "../key/SHA256Write.c"
#include "../key/SHA256Block.c"
#include "../key/SHA256Fetch.c"
#include "../key/keys.c"
#endif
/*====================================================================*
* program constants;
*--------------------------------------------------------------------*/
#define PSKEY_VERBOSE (1 << 0)
#define PSKEY_SILENCE (1 << 1)
/*====================================================================*
*
* static signed pskey (struct _file_ * pib);
*
* compute the SHA256 digest of the PIB file prescalers and print
* the key with optional filename on stdout; the digest acts like
* a fingerprint;
*
* assume that offset and extent are for ar7400 and change to 6400
* offset and extent when the PIB requires it;
*
*
*--------------------------------------------------------------------*/
static signed pskey (struct _file_ * pib, off_t offset, void * memory, ssize_t extent, flag_t flags)
{
struct sha256 sha256;
byte digest [SHA256_DIGEST_LENGTH];
struct pib_header pib_header;
if (read (pib->file, &pib_header, sizeof (pib_header)) != sizeof (pib_header))
{
return (-1);
}
if (pib_header.FWVERSION < 0x05)
{
offset = INT_PRESCALER_OFFSET;
extent = INT_PRESCALER_LENGTH;
}
if (lseek (pib->file, offset, SEEK_SET) != offset)
{
error (0, errno, FILE_CANTSEEK, pib->name);
return (-1);
}
if (read (pib->file, memory, extent) != extent)
{
error (0, errno, FILE_CANTREAD, pib->name);
return (-1);
}
SHA256Reset (&sha256);
SHA256Write (&sha256, memory, extent);
SHA256Fetch (&sha256, digest);
hexout (digest, sizeof (digest), '\0', 0, stdout);
if (_allclr (flags, PSKEY_SILENCE))
{
printf (" %s", pib->name);
}
printf ("\n");
return (0);
}
/*====================================================================*
*
* int main (int argc, char const * argv [])
*
*
*--------------------------------------------------------------------*/
int main (int argc, char const * argv [])
{
static char const * optv [] =
{
"lqrsv",
"file [file] [...]",
"print prescaler finger-print on stdout",
"q\tquiet mode",
"v\tverbose mode",
(char const *) (0)
};
struct _file_ pib;
uint8_t buffer [INT_PRESCALER_LENGTH];
signed state = 0;
flag_t flags = (flag_t) (0);
signed c;
optind = 1;
while ((c = getoptv (argc, argv, optv)) != -1)
{
switch ((char) (c))
{
case 'q':
_setbits (flags, PSKEY_SILENCE);
break;
case 'v':
_setbits (flags, PSKEY_VERBOSE);
break;
default:
break;
}
}
argc -= optind;
argv += optind;
while ((argc) && (* argv))
{
pib.name = * argv;
if ((pib.file = open (pib.name, O_BINARY|O_RDONLY)) == -1)
{
error (0, errno, "Can't open: %s", pib.name);
state = 1;
errno = 0;
}
else if (pibfile1 (&pib))
{
error (0, errno, "Bad PIB: %s", pib.name);
state = 1;
}
else if (pskey (&pib, INT_PRESCALER_OFFSET, buffer, sizeof (buffer), flags))
{
state = 1;
}
close (pib.file);
argc--;
argv++;
}
return (state);
}