#!/usr/bin/env python
  # Copyright 2009 Simon Arlott
  #
  # This program is free software; you can redistribute it and/or modify it
  # under the terms of the GNU General Public License as published by the Free
  # Software Foundation; either version 2 of the License, or (at your option)
  # any later version.
  #
  # This program is distributed in the hope that it will be useful, but WITHOUT
  # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  # more details.
  #
  # You should have received a copy of the GNU General Public License along with
  # this program; if not, write to the Free Software Foundation, Inc., 59
  # Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  #
  # Usage: cxacru-cf.py < cxacru-cf.bin
  # Output: values string suitable for the sysfs adsl_config attribute
  #
  # Warning: cxacru-cf.bin with MD5 hash cdbac2689969d5ed5d4850f117702110
  # contains mis-aligned values which will stop the modem from being able
  # to make a connection. If the first and last two bytes are removed then
  # the values become valid, but the modulation will be forced to ANSI
  # T1.413 only which may not be appropriate.
  #
  # The original binary format is a packed list of le32 values.
  
  import sys
  import struct
  
  i = 0
  while True:
  	buf = sys.stdin.read(4)
  
  	if len(buf) == 0:
  		break
  	elif len(buf) != 4:
  		sys.stdout.write("
  ")
  		sys.stderr.write("Error: read {0} not 4 bytes
  ".format(len(buf)))
  		sys.exit(1)
  
  	if i > 0:
  		sys.stdout.write(" ")
  	sys.stdout.write("{0:x}={1}".format(i, struct.unpack("<I", buf)[0]))
  	i += 1
  
  sys.stdout.write("
  ")