root / image_creator / os_type / windows.py @ 670ea7e3
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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 for the various Microsoft
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Windows OSs."""
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from image_creator.os_type import OSBase, sysprep |
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from image_creator.util import FatalError, check_guestfs_version, get_command |
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import hivex |
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import tempfile |
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import os |
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import time |
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import random |
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import string |
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import subprocess |
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import struct |
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kvm = get_command('kvm')
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BOOT_TIMEOUT = 300
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class Windows(OSBase): |
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"""OS class for Windows"""
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def __init__(self, image, **kargs): |
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super(Windows, self).__init__(image, **kargs) |
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device = self.g.part_to_dev(self.root) |
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self.last_part_num = self.g.part_list(device)[-1]['part_num'] |
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self.last_drive = None |
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self.system_drive = None |
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for drive, partition in self.g.inspect_get_drive_mappings(self.root): |
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if partition == "%s%d" % (device, self.last_part_num): |
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self.last_drive = drive
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if partition == self.root: |
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self.system_drive = drive
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assert self.system_drive |
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def needed_sysprep_params(self): |
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"""Returns a list of needed sysprep parameters. Each element in the
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list is a SysprepParam object.
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"""
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password = self.SysprepParam(
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'password', 'Image Administrator Password', 20, lambda x: True) |
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return [password]
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@sysprep('Disabling IPv6 privacy extensions') |
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def disable_ipv6_privacy_extensions(self): |
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"""Disable IPv6 privacy extensions"""
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self._guest_exec('netsh interface ipv6 set global ' |
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'randomizeidentifiers=disabled store=persistent')
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@sysprep('Disabling Teredo interface') |
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def disable_teredo(self): |
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"""Disable Teredo interface"""
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self._guest_exec('netsh interface teredo set state disabled') |
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@sysprep('Disabling ISATAP Adapters') |
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def disable_isatap(self): |
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"""Disable ISATAP Adapters"""
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self._guest_exec('netsh interface isa set state disabled') |
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@sysprep('Enabling ping responses') |
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def enable_pings(self): |
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"""Enable ping responces"""
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self._guest_exec('netsh firewall set icmpsetting 8') |
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@sysprep('Disabling hibernation support') |
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def disable_hibernation(self): |
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"""Disable hibernation support and remove the hibernation file"""
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self._guest_exec(r'powercfg.exe /hibernate off') |
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@sysprep('Setting the system clock to UTC') |
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def utc(self): |
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"""Set the hardware clock to UTC"""
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path = r'HKLM\SYSTEM\CurrentControlSet\Control\TimeZoneInformation'
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self._guest_exec(
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r'REG ADD %s /v RealTimeIsUniversal /t REG_DWORD /d 1 /f' % path)
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@sysprep('Clearing the event logs') |
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def clear_logs(self): |
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"""Clear all the event logs"""
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self._guest_exec(
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r"cmd /q /c for /f %l in ('wevtutil el') do wevtutil cl %l")
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@sysprep('Executing sysprep on the image (may take more that 10 minutes)') |
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def microsoft_sysprep(self): |
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"""Run the Microsoft System Preparation Tool. This will remove
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system-specific data and will make the image ready to be deployed.
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After this no other task may run.
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"""
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self._guest_exec(r'C:\Windows\system32\sysprep\sysprep ' |
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r'/quiet /generalize /oobe /shutdown')
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self.syspreped = True |
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@sysprep('Shrinking the last filesystem') |
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def shrink(self): |
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"""Shrink the last filesystem. Make sure the filesystem is defragged"""
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pass
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def do_sysprep(self): |
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"""Prepare system for image creation."""
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if getattr(self, 'syspreped', False): |
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raise FatalError("Image is already syspreped!") |
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txt = "System preparation parameter: `%s' is needed but missing!"
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for param in self.needed_sysprep_params(): |
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if param[0] not in self.sysprep_params: |
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raise FatalError(txt % param[0]) |
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self.mount(readonly=False) |
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try:
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disabled_uac = self._update_uac_remote_setting(1) |
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token = self._enable_os_monitor()
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# disable the firewalls
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firewall_states = self._update_firewalls(0, 0, 0) |
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# Delete the pagefile. It will be recreated when the system boots
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systemroot = self.g.inspect_get_windows_systemroot(self.root) |
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pagefile = "%s/pagefile.sys" % systemroot
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self.g.rm_rf(self.g.case_sensitive_path(pagefile)) |
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finally:
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self.umount()
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self.out.output("Shutting down helper VM ...", False) |
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self.g.sync()
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# guestfs_shutdown which is the prefered way to shutdown the backend
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# process was introduced in version 1.19.16
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if check_guestfs_version(self.g, 1, 19, 16) >= 0: |
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ret = self.g.shutdown()
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else:
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ret = self.g.kill_subprocess()
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self.out.success('done') |
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vm = None
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monitor = None
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try:
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self.out.output("Starting windows VM ...", False) |
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monitorfd, monitor = tempfile.mkstemp() |
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os.close(monitorfd) |
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vm, display = self._create_vm(monitor)
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self.out.success("started (console on vnc display: %d)." % display) |
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self.out.output("Waiting for OS to boot ...", False) |
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if not self._wait_on_file(monitor, token): |
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raise FatalError("Windows booting timed out.") |
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else:
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self.out.success('done') |
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time.sleep(5) # Just to be sure everything is up |
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self.out.output("Disabling automatic logon ...", False) |
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self._disable_autologon()
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self.out.success('done') |
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self.out.output('Preparing system from image creation:') |
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tasks = self.list_syspreps()
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enabled = filter(lambda x: x.enabled, tasks) |
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size = len(enabled)
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# Make sure shrink runs in the end, before ms sysprep
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enabled = filter(lambda x: self.sysprep_info(x).name != 'shrink', |
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enabled) |
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shrink_enabled = False
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if len(enabled) != size: |
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enabled.append(self.shrink)
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shrink_enabled = True
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# Make sure the ms sysprep is the last task to run if it is enabled
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enabled = filter(
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lambda x: self.sysprep_info(x).name != 'microsoft-sysprep', |
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enabled) |
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ms_sysprep_enabled = False
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if len(enabled) != size: |
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enabled.append(self.microsoft_sysprep)
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ms_sysprep_enabled = True
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cnt = 0
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for task in enabled: |
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cnt += 1
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self.out.output(('(%d/%d)' % (cnt, size)).ljust(7), False) |
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task() |
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setattr(task.im_func, 'executed', True) |
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self.out.output("Sending shut down command ...", False) |
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if not ms_sysprep_enabled: |
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self._shutdown()
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self.out.success("done") |
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self.out.output("Waiting for windows to shut down ...", False) |
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vm.wait() |
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self.out.success("done") |
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finally:
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if monitor is not None: |
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os.unlink(monitor) |
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if vm is not None: |
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self._destroy_vm(vm)
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self.out.output("Relaunching helper VM (may take a while) ...", |
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False)
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self.g.launch()
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self.out.success('done') |
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self.mount(readonly=False) |
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try:
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if disabled_uac:
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self._update_uac_remote_setting(0) |
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self._update_firewalls(*firewall_states)
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finally:
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self.umount()
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def _create_vm(self, monitor): |
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"""Create a VM with the image attached as the disk
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monitor: a file to be used to monitor when the OS is up
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"""
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def random_mac(): |
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mac = [0x00, 0x16, 0x3e, |
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random.randint(0x00, 0x7f), |
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random.randint(0x00, 0xff), |
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random.randint(0x00, 0xff)] |
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return ':'.join(map(lambda x: "%02x" % x, mac)) |
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# Use ganeti's VNC port range for a random vnc port
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vnc_port = random.randint(11000, 14999) |
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display = vnc_port - 5900
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vm = kvm( |
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'-smp', '1', '-m', '1024', '-drive', |
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'file=%s,format=raw,cache=unsafe,if=virtio' % self.image.device, |
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'-netdev', 'type=user,hostfwd=tcp::445-:445,id=netdev0', |
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'-device', 'virtio-net-pci,mac=%s,netdev=netdev0' % random_mac(), |
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'-vnc', ':%d' % display, '-serial', 'file:%s' % monitor, _bg=True) |
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return vm, display
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def _destroy_vm(self, vm): |
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"""Destroy a VM previously created by _create_vm"""
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if vm.process.alive:
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vm.terminate() |
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def _shutdown(self): |
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"""Shuts down the windows VM"""
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self._guest_exec(r'shutdown /s /t 5') |
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def _wait_on_file(self, fname, msg): |
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"""Wait until a message appears on a file"""
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for i in range(BOOT_TIMEOUT): |
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time.sleep(1)
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with open(fname) as f: |
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for line in f: |
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if line.startswith(msg):
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return True |
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return False |
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def _disable_autologon(self): |
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"""Disable automatic logon on the windows image"""
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winlogon = \ |
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r'"HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon"'
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self._guest_exec('REG DELETE %s /v DefaultUserName /f' % winlogon) |
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self._guest_exec('REG DELETE %s /v DefaultPassword /f' % winlogon) |
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self._guest_exec('REG DELETE %s /v AutoAdminLogon /f' % winlogon) |
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def _registry_file_path(self, regfile): |
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"""Retrieves the case sensitive path to a registry file"""
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systemroot = self.g.inspect_get_windows_systemroot(self.root) |
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path = "%s/system32/config/%s" % (systemroot, regfile)
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try:
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path = self.g.case_sensitive_path(path)
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except RuntimeError as e: |
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raise FatalError("Unable to retrieve registry file: %s. Reason: %s" |
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% (regfile, str(e)))
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return path
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def _enable_os_monitor(self): |
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"""Add a script in the registry that will send a random string to the
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first serial port when the windows image finishes booting.
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"""
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token = "".join(random.choice(string.ascii_letters) for x in range(16)) |
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path = self._registry_file_path('SOFTWARE') |
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softwarefd, software = tempfile.mkstemp() |
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try:
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os.close(softwarefd) |
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self.g.download(path, software)
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h = hivex.Hivex(software, write=True)
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# Enable automatic logon.
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# This is needed because we need to execute a script that we add in
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# the RunOnce registry entry and those programs only get executed
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# when a user logs on. There is a RunServicesOnce registry entry
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# whose keys get executed in the background when the logon dialog
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# box first appears, but they seem to only work with services and
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# not arbitrary command line expressions :-(
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#
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# Instructions on how to turn on automatic logon in Windows can be
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# found here: http://support.microsoft.com/kb/324737
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#
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# Warning: Registry change will not work if the “Logon Banner” is
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# defined on the server either by a Group Policy object (GPO) or by
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# a local policy.
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winlogon = h.root() |
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for child in ('Microsoft', 'Windows NT', 'CurrentVersion', |
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'Winlogon'):
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winlogon = h.node_get_child(winlogon, child) |
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h.node_set_value( |
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winlogon, |
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{'key': 'DefaultUserName', 't': 1, |
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'value': "Administrator".encode('utf-16le')}) |
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h.node_set_value( |
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winlogon, |
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{'key': 'DefaultPassword', 't': 1, |
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'value': self.sysprep_params['password'].encode('utf-16le')}) |
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h.node_set_value( |
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winlogon, |
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{'key': 'AutoAdminLogon', 't': 1, |
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'value': "1".encode('utf-16le')}) |
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|
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key = h.root() |
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for child in ('Microsoft', 'Windows', 'CurrentVersion'): |
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key = h.node_get_child(key, child) |
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|
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runonce = h.node_get_child(key, "RunOnce")
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if runonce is None: |
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runonce = h.node_add_child(key, "RunOnce")
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|
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value = ( |
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r'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe '
|
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r'-ExecutionPolicy RemoteSigned '
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r'"&{$port=new-Object System.IO.Ports.SerialPort COM1,9600,'
|
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r'None,8,one;$port.open();$port.WriteLine(\"' + token + r'\");' |
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r'$port.Close()}"').encode('utf-16le') |
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|
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h.node_set_value(runonce, |
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{'key': "BootMonitor", 't': 1, 'value': value}) |
400 |
|
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value = ( |
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r'REG ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion'
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r'\policies\system /v LocalAccountTokenFilterPolicy'
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r' /t REG_DWORD /d 1 /f').encode('utf-16le') |
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|
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h.node_set_value(runonce, |
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{'key': "UpdateRegistry", 't': 1, 'value': value}) |
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|
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h.commit(None)
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|
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self.g.upload(software, path)
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finally:
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os.unlink(software) |
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|
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return token
|
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|
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def _update_firewalls(self, domain, public, standard): |
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"""Enables or disables the firewall for the Domain, the Public and the
|
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Standard profile. Returns a triplete with the old values.
|
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|
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1 will enable a firewall and 0 will disable it
|
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"""
|
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|
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if domain not in (0, 1): |
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raise ValueError("Valid values for domain parameter are 0 and 1") |
426 |
|
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if public not in (0, 1): |
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raise ValueError("Valid values for public parameter are 0 and 1") |
429 |
|
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if standard not in (0, 1): |
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raise ValueError("Valid values for standard parameter are 0 and 1") |
432 |
|
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path = self._registry_file_path("SYSTEM") |
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systemfd, system = tempfile.mkstemp() |
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try:
|
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os.close(systemfd) |
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self.g.download(path, system)
|
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|
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h = hivex.Hivex(system, write=True)
|
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|
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select = h.node_get_child(h.root(), 'Select')
|
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current_value = h.node_get_value(select, 'Current')
|
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|
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# expecting a little endian dword
|
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assert h.value_type(current_value)[1] == 4 |
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current = "%03d" % h.value_dword(current_value)
|
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|
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firewall_policy = h.root() |
449 |
for child in ('ControlSet%s' % current, 'services', 'SharedAccess', |
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'Parameters', 'FirewallPolicy'): |
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firewall_policy = h.node_get_child(firewall_policy, child) |
452 |
|
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old_values = [] |
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new_values = [domain, public, standard] |
455 |
for profile in ('Domain', 'Public', 'Standard'): |
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node = h.node_get_child(firewall_policy, '%sProfile' % profile)
|
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|
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old_value = h.node_get_value(node, 'EnableFirewall')
|
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|
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# expecting a little endian dword
|
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assert h.value_type(old_value)[1] == 4 |
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old_values.append(h.value_dword(old_value)) |
463 |
|
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h.node_set_value( |
465 |
node, {'key': 'EnableFirewall', 't': 4L, |
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'value': struct.pack("<I", new_values.pop(0))}) |
467 |
|
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h.commit(None)
|
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self.g.upload(system, path)
|
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|
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finally:
|
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os.unlink(system) |
473 |
|
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return old_values
|
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|
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def _update_uac_remote_setting(self, value): |
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"""Updates the registry key value:
|
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[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies
|
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\System]"LocalAccountTokenFilterPolicy"
|
480 |
|
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value = 1 will disable the UAC remote restrictions
|
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value = 0 will enable the UAC remote restrictions
|
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|
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For more info see here: http://support.microsoft.com/kb/951016
|
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|
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Returns:
|
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True if the key is changed
|
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False if the key is unchanged
|
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"""
|
490 |
|
491 |
if value not in (0, 1): |
492 |
raise ValueError("Valid values for value parameter are 0 and 1") |
493 |
|
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path = self._registry_file_path('SOFTWARE') |
495 |
softwarefd, software = tempfile.mkstemp() |
496 |
try:
|
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os.close(softwarefd) |
498 |
self.g.download(path, software)
|
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|
500 |
h = hivex.Hivex(software, write=True)
|
501 |
|
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key = h.root() |
503 |
for child in ('Microsoft', 'Windows', 'CurrentVersion', 'Policies', |
504 |
'System'):
|
505 |
key = h.node_get_child(key, child) |
506 |
|
507 |
policy = None
|
508 |
for val in h.node_values(key): |
509 |
if h.value_key(val) == "LocalAccountTokenFilterPolicy": |
510 |
policy = val |
511 |
|
512 |
if policy is not None: |
513 |
dword = h.value_dword(policy) |
514 |
if dword == value:
|
515 |
return False |
516 |
elif value == 0: |
517 |
return False |
518 |
|
519 |
new_value = {'key': "LocalAccountTokenFilterPolicy", 't': 4L, |
520 |
'value': struct.pack("<I", value)} |
521 |
|
522 |
h.node_set_value(key, new_value) |
523 |
h.commit(None)
|
524 |
|
525 |
self.g.upload(software, path)
|
526 |
|
527 |
finally:
|
528 |
os.unlink(software) |
529 |
|
530 |
return True |
531 |
|
532 |
def _do_collect_metadata(self): |
533 |
"""Collect metadata about the OS"""
|
534 |
super(Windows, self)._do_collect_metadata() |
535 |
self.meta["USERS"] = " ".join(self._get_users()) |
536 |
|
537 |
def _get_users(self): |
538 |
"""Returns a list of users found in the images"""
|
539 |
path = self._registry_file_path('SAM') |
540 |
samfd, sam = tempfile.mkstemp() |
541 |
try:
|
542 |
os.close(samfd) |
543 |
self.g.download(path, sam)
|
544 |
|
545 |
h = hivex.Hivex(sam) |
546 |
|
547 |
key = h.root() |
548 |
# Navigate to /SAM/Domains/Account/Users/Names
|
549 |
for child in ('SAM', 'Domains', 'Account', 'Users', 'Names'): |
550 |
key = h.node_get_child(key, child) |
551 |
|
552 |
users = [h.node_name(x) for x in h.node_children(key)] |
553 |
|
554 |
finally:
|
555 |
os.unlink(sam) |
556 |
|
557 |
# Filter out the guest account
|
558 |
return filter(lambda x: x != "Guest", users) |
559 |
|
560 |
def _guest_exec(self, command, fatal=True): |
561 |
"""Execute a command on a windows VM"""
|
562 |
|
563 |
user = "Administrator%" + self.sysprep_params['password'] |
564 |
addr = 'localhost'
|
565 |
runas = '--runas=%s' % user
|
566 |
winexe = subprocess.Popen( |
567 |
['winexe', '-U', user, runas, "//%s" % addr, command], |
568 |
stdout=subprocess.PIPE, stderr=subprocess.PIPE) |
569 |
|
570 |
stdout, stderr = winexe.communicate() |
571 |
rc = winexe.poll() |
572 |
|
573 |
if rc != 0 and fatal: |
574 |
reason = stderr if len(stderr) else stdout |
575 |
raise FatalError("Command: `%s' failed. Reason: %s" % |
576 |
(command, reason)) |
577 |
|
578 |
return (stdout, stderr, rc)
|
579 |
|
580 |
# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :
|