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#
# Copyright 2006 sense.lab e.V.
#
# This file is part of the CryptoBox.
#
# The CryptoBox 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.
#
# The CryptoBox 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 the CryptoBox; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
"""
this module contains some useful tools to be used during the tests
just inherit one of its classes and add some test functions
"""
__revision__ = "$Id$"
import os
import subprocess
def find_test_device(candidate):
"""Check for a valid test device - the data will get lost ...
the result is the parent blockdevice (containing the partition table)
and the single partition
"""
dev = candidate
if os.path.exists("/dev/%s" % dev) \
and os.access("/dev/%s" % dev, os.W_OK):
try:
## try if it is a symlink
return os.readlink("/dev/%s" % dev)
except OSError:
## not a symlink (usual)
return "/dev/%s" % dev
else:
raise Exception, "no valid device for testing found"
def is_config_partition(device):
"""Check if the device is a configuration partition.
"""
proc = subprocess.Popen(
shell = False,
stdout = subprocess.PIPE,
stderr = subprocess.PIPE,
args = [ '/sbin/e2label',
device ])
(stdout, stderr) = proc.communicate()
return stdout.strip() == "cbox_config"
def umount(device):
"""Umount the specified device if possible - ignore errors
"""
proc = subprocess.Popen(
shell = False,
stdout = subprocess.PIPE,
stderr = subprocess.PIPE,
args = [ '/bin/umount', '-d', device ])
proc.wait()
def prepare_partition(blockdevice):
"""Prepare the expected partition in the device (destroy all data)
Check if 'device' is a vfat partition - if not, then
partition 'blockdevice' and format 'device' as vfat
"""
if (get_fs_type(blockdevice + "1") == "vfat") \
and (get_fs_type(blockdevice + "2") == "ext3") \
and (get_fs_type(blockdevice + "3") is None) \
and (get_fs_type(blockdevice + "5") is None):
## everything is fine
return
else:
## repartitioning
proc = subprocess.Popen(
shell = False,
stdin = subprocess.PIPE,
stdout = subprocess.PIPE,
stderr = subprocess.PIPE,
args = [ '/sbin/sfdisk', blockdevice ])
# create two partitions (20MB fat, 20MB ext)
proc.stdin.write(",10,0xC\n,10,L\n")
(output, error) = proc.communicate()
if proc.returncode != 0:
raise Exception, "could not partition the device (%s): %s" \
% (blockdevice, output.strip())
## formatting
format_device(blockdevice + "1", "vfat")
format_device(blockdevice + "2", "ext3")
def get_fs_type(device):
proc = subprocess.Popen(
shell = False,
stdout = subprocess.PIPE,
stderr = subprocess.PIPE,
args = [ '/sbin/blkid',
'-c', os.path.devnull,
'-w', os.path.devnull,
'-o', 'value',
'-s', 'TYPE',
device])
(output, error) = proc.communicate()
if (proc.returncode == 0) and output.strip():
## everything is fine
return output.strip()
else:
return None
def format_device(device, fs_type="vfat"):
proc = subprocess.Popen(
shell = False,
stdout = subprocess.PIPE,
stderr = subprocess.PIPE,
args = [ '/sbin/mkfs',
'-t', fs_type,
device ])
(output, error) = proc.communicate()
if proc.returncode != 0:
raise OSError, "could not format the device (%s): %s" \
% (device, output.strip())