X-Git-Url: https://code.grnet.gr/git/snf-image-creator/blobdiff_plain/74780ad6680f91c36d6ce67de8337b535b56320d..ec8b2a7949b8cdc47b5a9c624dcc6f78aa0e53f3:/image_creator/os_type/windows.py

diff --git a/image_creator/os_type/windows.py b/image_creator/os_type/windows.py
index 7807bdc..a5ef78a 100644
--- a/image_creator/os_type/windows.py
+++ b/image_creator/os_type/windows.py
@@ -36,62 +36,240 @@
 """This module hosts OS-specific code common for the various Microsoft
 Windows OSs."""
 
-from image_creator.os_type import OSBase, sysprep
-from image_creator.util import FatalError, check_guestfs_version, get_command
+from image_creator.os_type import OSBase, sysprep, add_sysprep_param
+from image_creator.util import FatalError, check_guestfs_version, \
+    get_kvm_binary
+from image_creator.winexe import WinEXE, WinexeTimeout
 
 import hivex
 import tempfile
 import os
+import signal
 import time
 import random
+import string
 import subprocess
-
-kvm = get_command('kvm')
+import struct
+
+# For more info see: http://technet.microsoft.com/en-us/library/jj612867.aspx
+KMS_CLIENT_SETUP_KEYS = {
+    "Windows 8 Professional": "NG4HW-VH26C-733KW-K6F98-J8CK4",
+    "Windows 8 Professional N": "XCVCF-2NXM9-723PB-MHCB7-2RYQQ",
+    "Windows 8 Enterprise": "32JNW-9KQ84-P47T8-D8GGY-CWCK7",
+    "Windows 8 Enterprise N": "JMNMF-RHW7P-DMY6X-RF3DR-X2BQT",
+    "Windows Server 2012 Core": "BN3D2-R7TKB-3YPBD-8DRP2-27GG4",
+    "Windows Server 2012 Core N": "8N2M2-HWPGY-7PGT9-HGDD8-GVGGY",
+    "Windows Server 2012 Core Single Language":
+    "2WN2H-YGCQR-KFX6K-CD6TF-84YXQ",
+    "Windows Server 2012 Core Country Specific":
+    "4K36P-JN4VD-GDC6V-KDT89-DYFKP",
+    "Windows Server 2012 Server Standard": "XC9B7-NBPP2-83J2H-RHMBY-92BT4",
+    "Windows Server 2012 Standard Core": "XC9B7-NBPP2-83J2H-RHMBY-92BT4",
+    "Windows Server 2012 MultiPoint Standard": "HM7DN-YVMH3-46JC3-XYTG7-CYQJJ",
+    "Windows Server 2012 MultiPoint Premium": "XNH6W-2V9GX-RGJ4K-Y8X6F-QGJ2G",
+    "Windows Server 2012 Datacenter": "48HP8-DN98B-MYWDG-T2DCC-8W83P",
+    "Windows Server 2012 Datacenter Core": "48HP8-DN98B-MYWDG-T2DCC-8W83P",
+    "Windows 7 Professional": "FJ82H-XT6CR-J8D7P-XQJJ2-GPDD4",
+    "Windows 7 Professional N": "MRPKT-YTG23-K7D7T-X2JMM-QY7MG",
+    "Windows 7 Professional E": "W82YF-2Q76Y-63HXB-FGJG9-GF7QX",
+    "Windows 7 Enterprise": "33PXH-7Y6KF-2VJC9-XBBR8-HVTHH",
+    "Windows 7 Enterprise N": "YDRBP-3D83W-TY26F-D46B2-XCKRJ",
+    "Windows 7 Enterprise E": "C29WB-22CC8-VJ326-GHFJW-H9DH4",
+    "Windows Server 2008 R2 Web": "6TPJF-RBVHG-WBW2R-86QPH-6RTM4",
+    "Windows Server 2008 R2 HPC edition": "TT8MH-CG224-D3D7Q-498W2-9QCTX",
+    "Windows Server 2008 R2 Standard": "YC6KT-GKW9T-YTKYR-T4X34-R7VHC",
+    "Windows Server 2008 R2 Enterprise": "489J6-VHDMP-X63PK-3K798-CPX3Y",
+    "Windows Server 2008 R2 Datacenter": "74YFP-3QFB3-KQT8W-PMXWJ-7M648",
+    "Windows Server 2008 R2 for Itanium-based Systems":
+    "GT63C-RJFQ3-4GMB6-BRFB9-CB83V",
+    "Windows Vista Business": "YFKBB-PQJJV-G996G-VWGXY-2V3X8",
+    "Windows Vista Business N": "HMBQG-8H2RH-C77VX-27R82-VMQBT",
+    "Windows Vista Enterprise": "VKK3X-68KWM-X2YGT-QR4M6-4BWMV",
+    "Windows Vista Enterprise N": "VTC42-BM838-43QHV-84HX6-XJXKV",
+    "Windows Web Server 2008": "WYR28-R7TFJ-3X2YQ-YCY4H-M249D",
+    "Windows Server 2008 Standard": "TM24T-X9RMF-VWXK6-X8JC9-BFGM2",
+    "Windows Server 2008 Standard without Hyper-V":
+    "W7VD6-7JFBR-RX26B-YKQ3Y-6FFFJ",
+    "Windows Server 2008 Enterprise":
+    "YQGMW-MPWTJ-34KDK-48M3W-X4Q6V",
+    "Windows Server 2008 Enterprise without Hyper-V":
+    "39BXF-X8Q23-P2WWT-38T2F-G3FPG",
+    "Windows Server 2008 HPC": "RCTX3-KWVHP-BR6TB-RB6DM-6X7HP",
+    "Windows Server 2008 Datacenter": "7M67G-PC374-GR742-YH8V4-TCBY3",
+    "Windows Server 2008 Datacenter without Hyper-V":
+    "22XQ2-VRXRG-P8D42-K34TD-G3QQC",
+    "Windows Server 2008 for Itanium-Based Systems":
+    "4DWFP-JF3DJ-B7DTH-78FJB-PDRHK"}
+
+_POSINT = lambda x: type(x) == int and x >= 0
 
 
 class Windows(OSBase):
     """OS class for Windows"""
+    @add_sysprep_param(
+        'shutdown_timeout', int, 120, "Shutdown Timeout (seconds)", _POSINT)
+    @add_sysprep_param(
+        'boot_timeout', int, 300, "Boot Timeout (seconds)", _POSINT)
+    @add_sysprep_param(
+        'connection_retries', int, 5, "Connection Retries", _POSINT)
+    @add_sysprep_param('password', str, None, 'Image Administrator Password')
+    def __init__(self, image, **kargs):
+        super(Windows, self).__init__(image, **kargs)
+
+        device = self.image.g.part_to_dev(self.root)
+
+        self.last_part_num = self.image.g.part_list(device)[-1]['part_num']
+        self.last_drive = None
+        self.system_drive = None
+
+        for drive, part in self.image.g.inspect_get_drive_mappings(self.root):
+            if part == "%s%d" % (device, self.last_part_num):
+                self.last_drive = drive
+            if part == self.root:
+                self.system_drive = drive
+
+        assert self.system_drive
+
+        self.product_name = self.image.g.inspect_get_product_name(self.root)
+        self.syspreped = False
+
+    @sysprep('Disabling IPv6 privacy extensions')
+    def disable_ipv6_privacy_extensions(self):
+        """Disable IPv6 privacy extensions"""
 
-    def needed_sysprep_params(self):
-        """Returns a list of needed sysprep parameters. Each element in the
-        list is a SysprepParam object.
-        """
+        self._guest_exec('netsh interface ipv6 set global '
+                         'randomizeidentifiers=disabled store=persistent')
 
-        password = self.SysprepParam(
-            'password', 'Image Administrator Password', 20, lambda x: True)
+    @sysprep('Disabling Teredo interface')
+    def disable_teredo(self):
+        """Disable Teredo interface"""
 
-        return [password]
+        self._guest_exec('netsh interface teredo set state disabled')
 
-    @sysprep(enabled=True)
-    def disable_ipv6_privacy_extensions(self, print_header=True):
-        """Disable IPv6 privacy extensions"""
+    @sysprep('Disabling ISATAP Adapters')
+    def disable_isatap(self):
+        """Disable ISATAP Adapters"""
 
-        if print_header:
-            self.out.output("Disabling IPv6 privacy extensions")
+        self._guest_exec('netsh interface isa set state disabled')
 
-        out, err, rc = self._guest_exec(
-            'netsh interface ipv6 set global randomizeidentifiers=disabled '
-            'store=persistent')
+    @sysprep('Enabling ping responses')
+    def enable_pings(self):
+        """Enable ping responses"""
 
-        if rc != 0:
-            raise FatalError("Unable to disable IPv6 privacy extensions: %s" %
-                             err)
+        self._guest_exec('netsh firewall set icmpsetting 8')
 
-    @sysprep(enabled=True)
-    def microsoft_sysprep(self, print_header=True):
-        """Run the Micorsoft System Preparation Tool on the Image. After this
-        runs, no other task may run.
-        """
+    @sysprep('Disabling hibernation support')
+    def disable_hibernation(self):
+        """Disable hibernation support and remove the hibernation file"""
+
+        self._guest_exec(r'powercfg.exe /hibernate off')
+
+    @sysprep('Setting the system clock to UTC')
+    def utc(self):
+        """Set the hardware clock to UTC"""
+
+        path = r'HKLM\SYSTEM\CurrentControlSet\Control\TimeZoneInformation'
+        self._guest_exec(
+            r'REG ADD %s /v RealTimeIsUniversal /t REG_DWORD /d 1 /f' % path)
 
-        if print_header:
-            self.out.output("Executing sysprep on the image (may take more "
-                            "than 10 minutes)")
+    @sysprep('Clearing the event logs')
+    def clear_logs(self):
+        """Clear all the event logs"""
 
-        out, err, rc = self._guest_exec(r'C:\windows\system32\sysprep\sysprep '
-                                        r'/quiet /generalize /oobe /shutdown')
+        self._guest_exec(
+            r"cmd /q /c for /f %l in ('wevtutil el') do wevtutil cl %l")
+
+    @sysprep('Executing Sysprep on the image (may take more that 10 minutes)')
+    def microsoft_sysprep(self):
+        """Run the Microsoft System Preparation Tool. This will remove
+        system-specific data and will make the image ready to be deployed.
+        After this no other task may run.
+        """
+
+        self._guest_exec(r'C:\Windows\system32\sysprep\sysprep '
+                         r'/quiet /generalize /oobe /shutdown')
         self.syspreped = True
-        if rc != 0:
-            raise FatalError("Unable to perform sysprep: %s" % err)
+
+    @sysprep('Converting the image into a KMS client', enabled=False)
+    def kms_client_setup(self):
+        """Install the appropriate KMS client setup key to the image to convert
+        it to a KMS client. Computers that are running volume licensing
+        editions of Windows 8, Windows Server 2012, Windows 7, Windows Server
+        2008 R2, Windows Vista, and Windows Server 2008 are, by default, KMS
+        clients with no additional configuration needed.
+        """
+        try:
+            setup_key = KMS_CLIENT_SETUP_KEYS[self.product_name]
+        except KeyError:
+            self.out.warn(
+                "Don't know the KMS client setup key for product: `%s'" %
+                self.product_name)
+            return
+
+        self._guest_exec(
+            r"cscript \Windows\system32\slmgr.vbs /ipk %s" % setup_key)
+
+    @sysprep('Shrinking the last filesystem')
+    def shrink(self):
+        """Shrink the last filesystem. Make sure the filesystem is defragged"""
+
+        # Query for the maximum number of reclaimable bytes
+        cmd = (
+            r'cmd /Q /V:ON /C "SET SCRIPT=%TEMP%\QUERYMAX_%RANDOM%.TXT & ' +
+            r'ECHO SELECT DISK 0 > %SCRIPT% & ' +
+            'ECHO SELECT PARTITION %d >> %%SCRIPT%% & ' % self.last_part_num +
+            r'ECHO SHRINK QUERYMAX >> %SCRIPT% & ' +
+            r'ECHO EXIT >> %SCRIPT% & ' +
+            r'DISKPART /S %SCRIPT% & ' +
+            r'IF NOT !ERRORLEVEL! EQU 0 EXIT /B 1 & ' +
+            r'DEL /Q %SCRIPT%"')
+
+        stdout, stderr, rc = self._guest_exec(cmd)
+
+        querymax = None
+        for line in stdout.splitlines():
+            # diskpart will return something like this:
+            #
+            #   The maximum number of reclaimable bytes is: xxxx MB
+            #
+            if line.find('reclaimable') >= 0:
+                querymax = line.split(':')[1].split()[0].strip()
+                assert querymax.isdigit(), \
+                    "Number of reclaimable bytes not a number"
+
+        if querymax is None:
+            FatalError("Error in shrinking! "
+                       "Couldn't find the max number of reclaimable bytes!")
+
+        querymax = int(querymax)
+        # From ntfsresize:
+        # Practically the smallest shrunken size generally is at around
+        # "used space" + (20-200 MB). Please also take into account that
+        # Windows might need about 50-100 MB free space left to boot safely.
+        # I'll give 100MB extra space just to be sure
+        querymax -= 100
+
+        if querymax < 0:
+            self.out.warn("Not enought available space to shrink the image!")
+            return
+
+        self.out.output("\tReclaiming %dMB ..." % querymax)
+
+        cmd = (
+            r'cmd /Q /V:ON /C "SET SCRIPT=%TEMP%\QUERYMAX_%RANDOM%.TXT & ' +
+            r'ECHO SELECT DISK 0 > %SCRIPT% & ' +
+            'ECHO SELECT PARTITION %d >> %%SCRIPT%% & ' % self.last_part_num +
+            'ECHO SHRINK DESIRED=%d >> %%SCRIPT%% & ' % querymax +
+            r'ECHO EXIT >> %SCRIPT% & ' +
+            r'DISKPART /S %SCRIPT% & ' +
+            r'IF NOT !ERRORLEVEL! EQU 0 EXIT /B 1 & ' +
+            r'DEL /Q %SCRIPT%"')
+
+        stdout, stderr, rc = self._guest_exec(cmd)
+
+        for line in stdout.splitlines():
+            if line.find('shrunk') >= 0:
+                self.out.output(line)
 
     def do_sysprep(self):
         """Prepare system for image creation."""
@@ -100,57 +278,73 @@ class Windows(OSBase):
             raise FatalError("Image is already syspreped!")
 
         txt = "System preparation parameter: `%s' is needed but missing!"
-        for param in self.needed_sysprep_params():
-            if param[0] not in self.sysprep_params:
-                raise FatalError(txt % param[0])
+        for name, param in self.needed_sysprep_params.items():
+            if name not in self.sysprep_params:
+                raise FatalError(txt % name)
 
         self.mount(readonly=False)
         try:
             disabled_uac = self._update_uac_remote_setting(1)
+            token = self._enable_os_monitor()
+
+            # disable the firewalls
+            firewall_states = self._update_firewalls(0, 0, 0)
+
+            # Delete the pagefile. It will be recreated when the system boots
+            systemroot = self.image.g.inspect_get_windows_systemroot(self.root)
+            try:
+                pagefile = "%s/pagefile.sys" % systemroot
+                self.image.g.rm_rf(self.image.g.case_sensitive_path(pagefile))
+            except RuntimeError:
+                pass
+
         finally:
             self.umount()
 
-        self.out.output("Shutting down helper VM ...", False)
-        self.g.sync()
-        # guestfs_shutdown which is the prefered way to shutdown the backend
-        # process was introduced in version 1.19.16
-        if check_guestfs_version(self.g, 1, 19, 16) >= 0:
-            ret = self.g.shutdown()
-        else:
-            ret = self.g.kill_subprocess()
+        self.image.disable_guestfs()
 
-        self.out.success('done')
+        vm = None
+        monitor = None
         try:
             self.out.output("Starting windows VM ...", False)
+            monitorfd, monitor = tempfile.mkstemp()
+            os.close(monitorfd)
+            vm = _VM(self.image.device, monitor, self.sysprep_params)
+            self.out.success("started (console on vnc display: %d)." %
+                             vm.display)
+
+            self.out.output("Waiting for OS to boot ...", False)
+            self._wait_vm_boot(vm, monitor, token)
+            self.out.success('done')
 
-            def random_mac():
-                mac = [0x00, 0x16, 0x3e,
-                       random.randint(0x00, 0x7f),
-                       random.randint(0x00, 0xff),
-                       random.randint(0x00, 0xff)]
-                return ':'.join(map(lambda x: "%02x" % x, mac))
-
-            vm = kvm('-smp', '1', '-m', '1024', '-drive',
-                     'file=%s,format=raw,cache=none,if=virtio' %
-                     self.image.device,
-                     '-netdev', 'type=user,hostfwd=tcp::445-:445,id=netdev0',
-                     '-device', 'virtio-net-pci,mac=%s,netdev=netdev0' %
-                     random_mac(), '-vnc', ':0', _bg=True)
-            time.sleep(60)
+            self.out.output("Checking connectivity to the VM ...", False)
+            self._check_connectivity()
             self.out.success('done')
 
-            tasks = self.list_syspreps()
-            enabled = filter(lambda x: x.enabled, tasks)
+            self.out.output("Disabling automatic logon ...", False)
+            self._disable_autologon()
+            self.out.success('done')
+
+            self.out.output('Preparing system for image creation:')
 
+            tasks = self.list_syspreps()
+            enabled = [task for task in tasks if task.enabled]
             size = len(enabled)
 
+            # Make sure shrink runs in the end, before ms sysprep
+            enabled = [task for task in enabled if
+                       self.sysprep_info(task).name != 'shrink']
+
+            if len(enabled) != size:
+                enabled.append(self.shrink)
+
             # Make sure the ms sysprep is the last task to run if it is enabled
-            enabled = filter(
-                lambda x: x.im_func.func_name != 'microsoft_sysprep', enabled)
+            enabled = [task for task in enabled if
+                       self.sysprep_info(task).name != 'microsoft-sysprep']
 
             ms_sysprep_enabled = False
             if len(enabled) != size:
-                enabled.append(self.ms_sysprep)
+                enabled.append(self.microsoft_sysprep)
                 ms_sysprep_enabled = True
 
             cnt = 0
@@ -160,45 +354,216 @@ class Windows(OSBase):
                 task()
                 setattr(task.im_func, 'executed', True)
 
+            self.out.output("Sending shut down command ...", False)
             if not ms_sysprep_enabled:
                 self._shutdown()
+            self.out.success("done")
 
-            vm.wait()
+            self.out.output("Waiting for windows to shut down ...", False)
+            vm.wait(self.sysprep_params['shutdown_timeout'])
+            self.out.success("done")
         finally:
-            if vm.process.alive:
-                vm.terminate()
-
-            self.out.output("Relaunching helper VM (may take a while) ...",
-                            False)
-            self.g.launch()
-            self.out.success('done')
-
-        if disabled_uac:
-            self._update_uac_remote_setting(0)
+            if monitor is not None:
+                os.unlink(monitor)
+
+            try:
+                if vm is not None:
+                    self.out.output("Destroying windows VM ...", False)
+                    vm.destroy()
+                    self.out.success("done")
+            finally:
+                self.image.enable_guestfs()
+
+                self.mount(readonly=False)
+                try:
+                    if disabled_uac:
+                        self._update_uac_remote_setting(0)
+
+                    self._update_firewalls(*firewall_states)
+                finally:
+                    self.umount()
 
     def _shutdown(self):
         """Shuts down the windows VM"""
+        self._guest_exec(r'shutdown /s /t 5')
+
+    def _wait_vm_boot(self, vm, fname, msg):
+        """Wait until a message appears on a file or the vm process dies"""
 
-        self.out.output("Shutting down windows VM ...", False)
-        out, err, rc = self._guest_exec(r'shutdown /s /t 5')
+        for _ in range(self.sysprep_params['boot_timeout']):
+            time.sleep(1)
+            with open(fname) as f:
+                for line in f:
+                    if line.startswith(msg):
+                        return True
+            if not vm.isalive():
+                raise FatalError("Windows VM died unexpectedly!")
 
-        if rc != 0:
-            raise FatalError("Unable to perform shutdown: %s" % err)
+        raise FatalError("Windows VM booting timed out!")
 
-        self.out.success('done')
+    def _disable_autologon(self):
+        """Disable automatic logon on the windows image"""
+
+        winlogon = \
+            r'"HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon"'
+
+        self._guest_exec('REG DELETE %s /v DefaultUserName /f' % winlogon)
+        self._guest_exec('REG DELETE %s /v DefaultPassword /f' % winlogon)
+        self._guest_exec('REG DELETE %s /v AutoAdminLogon /f' % winlogon)
 
     def _registry_file_path(self, regfile):
         """Retrieves the case sensitive path to a registry file"""
 
-        systemroot = self.g.inspect_get_windows_systemroot(self.root)
+        systemroot = self.image.g.inspect_get_windows_systemroot(self.root)
         path = "%s/system32/config/%s" % (systemroot, regfile)
         try:
-            path = self.g.case_sensitive_path(path)
-        except RuntimeError as e:
+            path = self.image.g.case_sensitive_path(path)
+        except RuntimeError as error:
             raise FatalError("Unable to retrieve registry file: %s. Reason: %s"
-                             % (regfile, str(e)))
+                             % (regfile, str(error)))
         return path
 
+    def _enable_os_monitor(self):
+        """Add a script in the registry that will send a random string to the
+        first serial port when the windows image finishes booting.
+        """
+
+        token = "".join(random.choice(string.ascii_letters) for x in range(16))
+
+        path = self._registry_file_path('SOFTWARE')
+        softwarefd, software = tempfile.mkstemp()
+        try:
+            os.close(softwarefd)
+            self.image.g.download(path, software)
+
+            h = hivex.Hivex(software, write=True)
+
+            # Enable automatic logon.
+            # This is needed because we need to execute a script that we add in
+            # the RunOnce registry entry and those programs only get executed
+            # when a user logs on. There is a RunServicesOnce registry entry
+            # whose keys get executed in the background when the logon dialog
+            # box first appears, but they seem to only work with services and
+            # not arbitrary command line expressions :-(
+            #
+            # Instructions on how to turn on automatic logon in Windows can be
+            # found here: http://support.microsoft.com/kb/324737
+            #
+            # Warning: Registry change will not work if the “Logon Banner” is
+            # defined on the server either by a Group Policy object (GPO) or by
+            # a local policy.
+
+            winlogon = h.root()
+            for child in ('Microsoft', 'Windows NT', 'CurrentVersion',
+                          'Winlogon'):
+                winlogon = h.node_get_child(winlogon, child)
+
+            h.node_set_value(
+                winlogon,
+                {'key': 'DefaultUserName', 't': 1,
+                 'value': "Administrator".encode('utf-16le')})
+            h.node_set_value(
+                winlogon,
+                {'key': 'DefaultPassword', 't': 1,
+                 'value':  self.sysprep_params['password'].encode('utf-16le')})
+            h.node_set_value(
+                winlogon,
+                {'key': 'AutoAdminLogon', 't': 1,
+                 'value': "1".encode('utf-16le')})
+
+            key = h.root()
+            for child in ('Microsoft', 'Windows', 'CurrentVersion'):
+                key = h.node_get_child(key, child)
+
+            runonce = h.node_get_child(key, "RunOnce")
+            if runonce is None:
+                runonce = h.node_add_child(key, "RunOnce")
+
+            value = (
+                r'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe '
+                r'-ExecutionPolicy RemoteSigned '
+                r'"&{$port=new-Object System.IO.Ports.SerialPort COM1,9600,'
+                r'None,8,one;$port.open();$port.WriteLine(\"' + token + r'\");'
+                r'$port.Close()}"').encode('utf-16le')
+
+            h.node_set_value(runonce,
+                             {'key': "BootMonitor", 't': 1, 'value': value})
+
+            value = (
+                r'REG ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion'
+                r'\policies\system /v LocalAccountTokenFilterPolicy'
+                r' /t REG_DWORD /d 1 /f').encode('utf-16le')
+
+            h.node_set_value(runonce,
+                             {'key': "UpdateRegistry", 't': 1, 'value': value})
+
+            h.commit(None)
+
+            self.image.g.upload(software, path)
+        finally:
+            os.unlink(software)
+
+        return token
+
+    def _update_firewalls(self, domain, public, standard):
+        """Enables or disables the firewall for the Domain, the Public and the
+        Standard profile. Returns a triplete with the old values.
+
+        1 will enable a firewall and 0 will disable it
+        """
+
+        if domain not in (0, 1):
+            raise ValueError("Valid values for domain parameter are 0 and 1")
+
+        if public not in (0, 1):
+            raise ValueError("Valid values for public parameter are 0 and 1")
+
+        if standard not in (0, 1):
+            raise ValueError("Valid values for standard parameter are 0 and 1")
+
+        path = self._registry_file_path("SYSTEM")
+        systemfd, system = tempfile.mkstemp()
+        try:
+            os.close(systemfd)
+            self.image.g.download(path, system)
+
+            h = hivex.Hivex(system, write=True)
+
+            select = h.node_get_child(h.root(), 'Select')
+            current_value = h.node_get_value(select, 'Current')
+
+            # expecting a little endian dword
+            assert h.value_type(current_value)[1] == 4
+            current = "%03d" % h.value_dword(current_value)
+
+            firewall_policy = h.root()
+            for child in ('ControlSet%s' % current, 'services', 'SharedAccess',
+                          'Parameters', 'FirewallPolicy'):
+                firewall_policy = h.node_get_child(firewall_policy, child)
+
+            old_values = []
+            new_values = [domain, public, standard]
+            for profile in ('Domain', 'Public', 'Standard'):
+                node = h.node_get_child(firewall_policy, '%sProfile' % profile)
+
+                old_value = h.node_get_value(node, 'EnableFirewall')
+
+                # expecting a little endian dword
+                assert h.value_type(old_value)[1] == 4
+                old_values.append(h.value_dword(old_value))
+
+                h.node_set_value(
+                    node, {'key': 'EnableFirewall', 't': 4L,
+                           'value': struct.pack("<I", new_values.pop(0))})
+
+            h.commit(None)
+            self.image.g.upload(system, path)
+
+        finally:
+            os.unlink(system)
+
+        return old_values
+
     def _update_uac_remote_setting(self, value):
         """Updates the registry key value:
         [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies
@@ -221,7 +586,7 @@ class Windows(OSBase):
         softwarefd, software = tempfile.mkstemp()
         try:
             os.close(softwarefd)
-            self.g.download(path, software)
+            self.image.g.download(path, software)
 
             h = hivex.Hivex(software, write=True)
 
@@ -242,14 +607,13 @@ class Windows(OSBase):
             elif value == 0:
                 return False
 
-            new_value = {
-                'key': "LocalAccountTokenFilterPolicy", 't': 4L,
-                'value': '%s\x00\x00\x00' % '\x00' if value == 0 else '\x01'}
+            new_value = {'key': "LocalAccountTokenFilterPolicy", 't': 4L,
+                         'value': struct.pack("<I", value)}
 
             h.node_set_value(key, new_value)
             h.commit(None)
 
-            self.g.upload(software, path)
+            self.image.g.upload(software, path)
 
         finally:
             os.unlink(software)
@@ -263,38 +627,186 @@ class Windows(OSBase):
 
     def _get_users(self):
         """Returns a list of users found in the images"""
-        path = self._registry_file_path('SAM')
         samfd, sam = tempfile.mkstemp()
         try:
             os.close(samfd)
-            self.g.download(path, sam)
+            self.image.g.download(self._registry_file_path('SAM'), sam)
 
             h = hivex.Hivex(sam)
 
-            key = h.root()
-            # Navigate to /SAM/Domains/Account/Users/Names
-            for child in ('SAM', 'Domains', 'Account', 'Users', 'Names'):
-                key = h.node_get_child(key, child)
+            # Navigate to /SAM/Domains/Account/Users
+            users_node = h.root()
+            for child in ('SAM', 'Domains', 'Account', 'Users'):
+                users_node = h.node_get_child(users_node, child)
 
-            users = [h.node_name(x) for x in h.node_children(key)]
+            # Navigate to /SAM/Domains/Account/Users/Names
+            names_node = h.node_get_child(users_node, 'Names')
+
+            # HKEY_LOCAL_MACHINE\SAM\SAM\Domains\Account\Users\%RID%
+            # HKEY_LOCAL_MACHINE\SAM\SAM\Domains\Account\Users\Names\%Username%
+            #
+            # The RID (relative identifier) of each user is stored as the type!
+            # (not the value) of the default key of the node under Names whose
+            # name is the user's username. Under the RID node, there in a F
+            # value that contains information about this user account.
+            #
+            # See sam.h of the chntpw project on how to translate the F value
+            # of an account in the registry. Bytes 56 & 57 are the account type
+            # and status flags. The first bit is the 'account disabled' bit
+            disabled = lambda f: int(f[56].encode('hex'), 16) & 0x01
+
+            users = []
+            for user_node in h.node_children(names_node):
+                username = h.node_name(user_node)
+                rid = h.value_type(h.node_get_value(user_node, ""))[0]
+                # if RID is 500 (=0x1f4), the corresponding node name under
+                # Users is '000001F4'
+                key = ("%8.x" % rid).replace(' ', '0').upper()
+                rid_node = h.node_get_child(users_node, key)
+                f_value = h.value_value(h.node_get_value(rid_node, 'F'))[1]
+
+                if disabled(f_value):
+                    self.out.warn("Found disabled `%s' account!" % username)
+                    continue
+
+                users.append(username)
 
         finally:
             os.unlink(sam)
 
         # Filter out the guest account
-        return filter(lambda x: x != "Guest", users)
+        return users
+
+    def _check_connectivity(self):
+        """Check if winexe works on the Windows VM"""
+
+        retries = self.sysprep_params['connection_retries']
+        # If the connection_retries parameter is set to 0 disable the
+        # connectivity check
+        if retries == 0:
+            return True
+
+        passwd = self.sysprep_params['password']
+        winexe = WinEXE('Administrator', passwd, 'localhost')
+        winexe.uninstall().debug(9)
+
+        for i in range(retries):
+            (stdout, stderr, rc) = winexe.run('cmd /C')
+            if rc == 0:
+                return True
+            log = tempfile.NamedTemporaryFile(delete=False)
+            try:
+                log.file.write(stdout)
+            finally:
+                log.close()
+            self.out.output("failed! See: `%s' for the full output" % log.name)
+            if i < retries - 1:
+                self.out.output("retrying ...", False)
+
+        raise FatalError("Connection to the Windows VM failed after %d retries"
+                         % retries)
+
+    def _guest_exec(self, command, fatal=True):
+        """Execute a command on a windows VM"""
+
+        passwd = self.sysprep_params['password']
+
+        winexe = WinEXE('Administrator', passwd, 'localhost')
+        winexe.runas('Administrator', passwd).uninstall()
+
+        try:
+            (stdout, stderr, rc) = winexe.run(command)
+        except WinexeTimeout:
+            FatalError("Command: `%s' timeout out." % command)
+
+        if rc != 0 and fatal:
+            reason = stderr if len(stderr) else stdout
+            self.out.output("Command: `%s' failed (rc=%d). Reason: %s" %
+                            (command, rc, reason))
+            raise FatalError("Command: `%s' failed (rc=%d). Reason: %s" %
+                             (command, rc, reason))
+
+        return (stdout, stderr, rc)
+
+
+class _VM(object):
+    """Windows Virtual Machine"""
+    def __init__(self, disk, serial, params):
+        """Create _VM instance
+
+            disk: VM's hard disk
+            serial: File to save the output of the serial port
+        """
+
+        self.disk = disk
+        self.serial = serial
+        self.params = params
+
+        def random_mac():
+            """creates a random mac address"""
+            mac = [0x00, 0x16, 0x3e,
+                   random.randint(0x00, 0x7f),
+                   random.randint(0x00, 0xff),
+                   random.randint(0x00, 0xff)]
+
+            return ':'.join(['%02x' % x for x in mac])
+
+        # Use ganeti's VNC port range for a random vnc port
+        self.display = random.randint(11000, 14999) - 5900
+
+        kvm = get_kvm_binary()
+
+        if kvm is None:
+            FatalError("Can't find the kvm binary")
+
+        args = [
+            kvm, '-smp', '1', '-m', '1024', '-drive',
+            'file=%s,format=raw,cache=unsafe,if=virtio' % self.disk,
+            '-netdev', 'type=user,hostfwd=tcp::445-:445,id=netdev0',
+            '-device', 'virtio-net-pci,mac=%s,netdev=netdev0' % random_mac(),
+            '-vnc', ':%d' % self.display, '-serial', 'file:%s' % self.serial,
+            '-monitor', 'stdio']
+
+        self.process = subprocess.Popen(args, stdin=subprocess.PIPE,
+                                        stdout=subprocess.PIPE)
+
+    def isalive(self):
+        """Check if the VM is still alive"""
+        return self.process.poll() is None
+
+    def destroy(self):
+        """Destroy the VM"""
+
+        if not self.isalive():
+            return
+
+        def handler(signum, frame):
+            self.process.terminate()
+            time.sleep(1)
+            if self.isalive():
+                self.process.kill()
+            self.process.wait()
+            raise FatalError("VM destroy timed-out")
+
+        signal.signal(signal.SIGALRM, handler)
+
+        signal.alarm(self.params['shutdown_timeout'])
+        self.process.communicate(input="system_powerdown\n")
+        signal.alarm(0)
+
+    def wait(self, timeout=0):
+        """Wait for the VM to terminate"""
+
+        def handler(signum, frame):
+            self.destroy()
+            raise FatalError("VM wait timed-out.")
 
-    def _guest_exec(self, command):
-        user = "Administrator%" + self.sysprep_params['password']
-        addr = 'localhost'
-        runas = '--runas=%s' % user
-        winexe = subprocess.Popen(
-            ['winexe', '-U', user, "//%s" % addr, runas, command],
-            stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        signal.signal(signal.SIGALRM, handler)
 
-        result = winexe.communicate()
-        rc = winexe.poll()
+        signal.alarm(timeout)
+        stdout, stderr = self.process.communicate()
+        signal.alarm(0)
 
-        return (result[0], result[1], rc)
+        return (stdout, stderr, self.process.poll())
 
 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :