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#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
bootcleanse – Cleanse your system from old MBR codes and boot flags
Copyright © 2012 Mattias Andrée (maandree@kth.se)
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 3 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, see <http://www.gnu.org/licenses/>.
'''
## TODO add support for bootable logical partitions
import os
import sys
from subprocess import Popen, PIPE
REMOVE_MBR_CODE = False
REMOVE_BOOT_FLAG = False
mbrs = []
for arg in sys.argv[1:]:
mbrs.append(arg)
print('Remove MBR code from ' + arg)
if not (('a' <= arg[-1]) and (arg[-1] <= 'z') and (arg[:-1] in ('/dev/sd', '/dev/hd'))):
print('\033[01;33mWarning:\033[21;39m Does not match /dev/(sd|hd)[a-z]')
print()
print('If you are not sure what you are doing, you may want')
print('to back up the first 512 byte of each defected file.')
print('To back up run `dd if=DEVICE bs=512 count=1 > DEV.backup`.')
print('To restore run `dd of=DEVICE bs=512 count=1 is=DEV.backup`.')
print()
print('\033[01mProcessed? [yes/no]\033[21m')
while True:
yn = input()
if yn == 'yes':
break
if yn == 'no':
exit(128)
print('Only ‘yes’ and ‘no’ is valid')
def dd(pipe, i, o, *extra):
cmd = ['sudo', 'dd']
if i is not None:
cmd += ['if=%s' % i]
if o is not None:
cmd += ['of=%s' % o]
cmd += extra
ch0 = sys.stdin
ch1 = PIPE if (type(pipe) is str) or pipe else sys.stdout
ch2 = PIPE if (type(pipe) is str) or pipe else sys.stderr
if type(pipe) is str:
cmd = ['\'' + a.replace('\'', '\'\\\'\'') + '\'' for a in cmd]
cmd = ' '.join(cmd)
cmd = 'echo -e \'%s\' | %s' % (pipe, cmd)
cmd = ['sudo', 'sh', '-c', cmd]
return Popen(cmd, stdin=ch0, stdout=ch1, stderr=ch2).communicate()
for mbr in mbrs:
if REMOVE_MBR_CODE:
dd(False, '/dev/zero', mbr, 'bs=440', 'count=1')
if REMOVE_BOOT_FLAG:
p = 0
status = dd(True, mbr, None, 'bs=1', 'count=1', 'skip=%i' % (446 + 16 * p))
status = hex(status[0][0] & 127)[2:]
if len(status) == 1:
status = '0' + status
status = '\\x' + status
dd(status, None, mbr, 'bs=1', 'count=1', 'seek=%i' % (446 + 16 * p))
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