Revision 0db17fcf image_creator/os_type/windows.py
b/image_creator/os_type/windows.py | ||
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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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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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if print_header: |
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self.out.output("Disabling IPv6 privacy extensions") |
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out, err, rc = self._guest_exec( |
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'netsh interface ipv6 set global randomizeidentifiers=disabled ' |
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'store=persistent') |
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|
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if rc != 0: |
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raise FatalError("Unable to disable IPv6 privacy extensions: %s" % |
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err) |
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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(enabled=True) |
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def microsoft_sysprep(self, print_header=True): |
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"""Run the Micorsoft System Preparation Tool on the Image. After this |
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runs, no other task may run. |
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"""Run the Microsoft System Preparation Tool on the Image. This will |
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remove system-specific data and will make the image ready to be |
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deployed. After this no other task may run. |
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""" |
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if print_header: |
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self.out.output("Executing sysprep on the image (may take more " |
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"than 10 minutes)") |
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out, err, rc = self._guest_exec(r'C:\windows\system32\sysprep\sysprep '
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r'/quiet /generalize /oobe /shutdown')
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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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if rc != 0: |
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raise FatalError("Unable to perform sysprep: %s" % err) |
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def do_sysprep(self): |
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"""Prepare system for image creation.""" |
... | ... | |
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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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finally: |
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self.umount() |
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|
... | ... | |
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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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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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vm = kvm('-smp', '1', '-m', '1024', '-drive', |
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'file=%s,format=raw,cache=none,if=virtio' % |
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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' % |
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random_mac(), '-vnc', ':0', _bg=True) |
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time.sleep(60) |
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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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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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|
... | ... | |
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task() |
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setattr(task.im_func, 'executed', True) |
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self.out.output("Shutting down windows VM ...", 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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vm.wait() |
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finally: |
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if vm.process.alive: |
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vm.terminate() |
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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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if disabled_uac: |
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self._update_uac_remote_setting(0) |
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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('-smp', '1', '-m', '1024', '-drive', |
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'file=%s,format=raw,cache=none,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' % |
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random_mac(), '-vnc', ':%d' % display, '-serial', |
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'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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self.out.output("Shutting down windows VM ...", False)
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out, err, rc = 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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if rc != 0: |
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raise FatalError("Unable to perform shutdown: %s" % err) |
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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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self.out.success('done') |
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def _disable_autologon(self): |
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"""Disable automatic logon on the windows image""" |
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|
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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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% (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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|
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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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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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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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h.node_set_value(runonce, |
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{'key': "BootMonitor", '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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return token |
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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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# Filter out the guest account |
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return filter(lambda x: x != "Guest", users) |
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def _guest_exec(self, command): |
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def _guest_exec(self, command, fatal=True): |
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"""Execute a command on a windows VM""" |
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|
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user = "Administrator%" + self.sysprep_params['password'] |
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addr = 'localhost' |
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runas = '--runas=%s' % user |
... | ... | |
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['winexe', '-U', user, "//%s" % addr, runas, command], |
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stdout=subprocess.PIPE, stderr=subprocess.PIPE) |
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result = winexe.communicate()
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stdout, stderr = winexe.communicate()
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rc = winexe.poll() |
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return (result[0], result[1], rc) |
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if rc != 0 and fatal: |
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reason = stderr if len(stderr) else stdout |
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raise FatalError("Command: `%s' failed. Reason: %s" % |
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(command, reason)) |
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|
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return (stdout, stderr, rc) |
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# vim: set sta sts=4 shiftwidth=4 sw=4 et ai : |
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