root / image_creator / os_type / unix.py @ c71f38be
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# -*- coding: utf-8 -*-
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#
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# Copyright 2012 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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"""This module hosts OS-specific code common to all Unix-like OSs."""
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import re |
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from image_creator.os_type import OSBase, sysprep |
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class Unix(OSBase): |
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"""OS class for Unix"""
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sensitive_userdata = [ |
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'.history',
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'.bash_history',
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'.gnupg',
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'.ssh',
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'.kamakirc',
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'.kamaki.history'
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] |
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def _mountpoints(self): |
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"""Return mountpoints in the correct order.
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/ should be mounted before /boot or /usr, /usr befor /usr/bin ...
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"""
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mps = self.g.inspect_get_mountpoints(self.root) |
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def compare(a, b): |
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if len(a[0]) > len(b[0]): |
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return 1 |
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elif len(a[0]) == len(b[0]): |
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return 0 |
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else:
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return -1 |
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mps.sort(compare) |
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for mp in mps: |
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yield mp
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def _do_mount(self, readonly): |
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"""Mount partitions in the correct order"""
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critical_mpoints = ('/', '/etc', '/root', '/home', '/var') |
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mopts = 'ro' if readonly else 'rw' |
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for mp, dev in self._mountpoints(): |
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try:
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self.g.mount_options(mopts, dev, mp)
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except RuntimeError as msg: |
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if mp in critical_mpoints: |
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self.out.warn('unable to mount %s. Reason: %s' % (mp, msg)) |
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return False |
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else:
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self.out.warn('%s (ignored)' % msg) |
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return True |
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@sysprep()
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def cleanup_cache(self, print_header=True): |
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"""Remove all regular files under /var/cache"""
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if print_header:
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self.out.output('Removing files under /var/cache') |
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self._foreach_file('/var/cache', self.g.rm, ftype='r') |
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@sysprep()
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def cleanup_tmp(self, print_header=True): |
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"""Remove all files under /tmp and /var/tmp"""
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if print_header:
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self.out.output('Removing files under /tmp and /var/tmp') |
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self._foreach_file('/tmp', self.g.rm_rf, maxdepth=1) |
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self._foreach_file('/var/tmp', self.g.rm_rf, maxdepth=1) |
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@sysprep()
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def cleanup_log(self, print_header=True): |
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"""Empty all files under /var/log"""
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if print_header:
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self.out.output('Emptying all files under /var/log') |
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self._foreach_file('/var/log', self.g.truncate, ftype='r') |
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@sysprep(enabled=False) |
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def cleanup_mail(self, print_header=True): |
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"""Remove all files under /var/mail and /var/spool/mail"""
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if print_header:
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self.out.output('Removing files under /var/mail & /var/spool/mail') |
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if self.g.is_dir('/var/spool/mail'): |
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self._foreach_file('/var/spool/mail', self.g.rm_rf, maxdepth=1) |
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self._foreach_file('/var/mail', self.g.rm_rf, maxdepth=1) |
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@sysprep()
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def cleanup_userdata(self, print_header=True): |
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"""Delete sensitive userdata"""
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homedirs = ['/root']
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if self.g.is_dir('/home/'): |
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homedirs += self._ls('/home/') |
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if print_header:
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self.out.output("Removing sensitive user data under %s" % |
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" ".join(homedirs))
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for homedir in homedirs: |
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for data in self.sensitive_userdata: |
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fname = "%s/%s" % (homedir, data)
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if self.g.is_file(fname): |
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self.g.scrub_file(fname)
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elif self.g.is_dir(fname): |
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self._foreach_file(fname, self.g.scrub_file, ftype='r') |
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# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :
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