Exemplo n.º 1
0
def delete_updates():
    """Returns commands for deleting Windows Updates files"""
    windir = os.path.expandvars('$windir')
    dirs = glob.glob(os.path.join(windir, '$NtUninstallKB*'))
    dirs += [os.path.expandvars('$windir\\SoftwareDistribution\\Download')]
    dirs += [os.path.expandvars('$windir\\ie7updates')]
    dirs += [os.path.expandvars('$windir\\ie8updates')]
    if not dirs:
        # if nothing to delete, then also do not restart service
        return

    import win32serviceutil
    wu_running = win32serviceutil.QueryServiceStatus('wuauserv')[1] == 4

    args = ['net', 'stop', 'wuauserv']

    def wu_service():
        General.run_external(args)
        return 0
    if wu_running:
        yield Command.Function(None, wu_service, " ".join(args))

    for path1 in dirs:
        for path2 in FileUtilities.children_in_directory(path1, True):
            yield Command.Delete(path2)
        if os.path.exists(path1):
            yield Command.Delete(path1)

    args = ['net', 'start', 'wuauserv']
    if wu_running:
        yield Command.Function(None, wu_service, " ".join(args))
Exemplo n.º 2
0
def delete_updates():
    """Returns commands for deleting Windows Updates files"""
    windir = os.path.expandvars('$windir')
    dirs = glob.glob(os.path.join(windir, '$NtUninstallKB*'))
    dirs += [os.path.expandvars('$windir\\SoftwareDistribution\\Download')]
    dirs += [os.path.expandvars('$windir\\ie7updates')]
    dirs += [os.path.expandvars('$windir\\ie8updates')]
    if not dirs:
        # if nothing to delete, then also do not restart service
        return

    import win32serviceutil
    wu_running = win32serviceutil.QueryServiceStatus('wuauserv')[1] == 4

    args = ['net', 'stop', 'wuauserv']

    def wu_service():
        General.run_external(args)
        return 0

    if wu_running:
        yield Command.Function(None, wu_service, " ".join(args))

    for path1 in dirs:
        for path2 in FileUtilities.children_in_directory(path1, True):
            yield Command.Delete(path2)
        if os.path.exists(path1):
            yield Command.Delete(path1)

    args = ['net', 'start', 'wuauserv']
    if wu_running:
        yield Command.Function(None, wu_service, " ".join(args))
Exemplo n.º 3
0
 def __localization_path(self, basedir, language_filter, dir_filter):
     """Return localization paths in a single directory tree"""
     if -1 != basedir.find('*'):
         for basedir2 in glob.iglob(basedir):
             for path in self.__localization_path(basedir2, language_filter,
                                                  dir_filter):
                 yield path
         return
     if not os.path.exists(basedir):
         return
     for path in os.listdir(basedir):
         if None != dir_filter and dir_filter(path):
             continue
         locale_code = path
         try:
             language_code = locale_to_language(path)
         except:
             continue
         if None != language_filter and language_filter(
                 locale_code, language_code):
             continue
         locale_dirname = os.path.join(basedir, locale_code)
         for path in FileUtilities.children_in_directory(
                 locale_dirname, True):
             yield path
         yield locale_dirname
Exemplo n.º 4
0
def get_recycle_bin():
    """Yield a list of files in the recycle bin"""
    pidl = shell.SHGetSpecialFolderLocation(0, shellcon.CSIDL_BITBUCKET)
    desktop = shell.SHGetDesktopFolder()
    h = desktop.BindToObject(pidl, None, shell.IID_IShellFolder)
    for item in h:
        path = h.GetDisplayNameOf(item, shellcon.SHGDN_FORPARSING)
        if os.path.isdir(path):
            for child in FileUtilities.children_in_directory(path, True):
                yield child
            yield path
        else:
            yield path
Exemplo n.º 5
0
def get_recycle_bin():
    """Yield a list of files in the recycle bin"""
    pidl = shell.SHGetSpecialFolderLocation(0, shellcon.CSIDL_BITBUCKET)
    desktop = shell.SHGetDesktopFolder()
    h = desktop.BindToObject(pidl, None, shell.IID_IShellFolder)
    for item in h:
        path = h.GetDisplayNameOf(item, shellcon.SHGDN_FORPARSING)
        if os.path.isdir(path):
            for child in FileUtilities.children_in_directory(path, True):
                yield child
            yield path
        else:
            yield path
Exemplo n.º 6
0
 def __localization_path(self, basedir, language_filter, dir_filter):
     """Return localization paths in a single directory tree"""
     if -1 != basedir.find('*'):
         for basedir2 in glob.iglob(basedir):
             for path in self.__localization_path(basedir2, language_filter, dir_filter):
                 yield path
         return
     if not os.path.exists(basedir):
         return
     for path in os.listdir(basedir):
         if None != dir_filter and dir_filter(path):
             continue
         locale_code = path
         try:
             language_code = locale_to_language(path)
         except:
             continue
         if None != language_filter and language_filter(locale_code, language_code):
             continue
         locale_dirname = os.path.join(basedir, locale_code)
         for path in FileUtilities.children_in_directory(locale_dirname, True):
             yield path
         yield locale_dirname
Exemplo n.º 7
0
 def get_walk_files(top):
     for expanded in glob.iglob(top):
         for path in FileUtilities.children_in_directory(expanded, False):
             yield path
Exemplo n.º 8
0
 def get_walk_files(top):
     for expanded in glob.iglob(top):
         for path in FileUtilities.children_in_directory(
                 expanded, False):
             yield path
Exemplo n.º 9
0
    def get_commands(self, option_id):
        # This variable will collect fully expanded file names, and
        # at the end of this function, they will be checked they exist
        # and processed through Command.Delete().
        files = []

        # cache
        if 'posix' == os.name and 'cache' == option_id:
            dirname = os.path.expanduser("~/.cache/")
            for filename in children_in_directory(dirname, True):
                if self.whitelisted(filename):
                    continue
                files += [filename]

        # custom
        if 'custom' == option_id:
            for (c_type, c_path) in options.get_custom_paths():
                if 'file' == c_type:
                    files += [c_path]
                elif 'folder' == c_type:
                    files += [c_path]
                    for path in children_in_directory(c_path, True):
                        files += [path]
                else:
                    raise RuntimeError('custom folder has invalid type %s' %
                                       c_type)

        # menu
        menu_dirs = [
            '~/.local/share/applications', '~/.config/autostart',
            '~/.gnome/apps/', '~/.gnome2/panel2.d/default/launchers',
            '~/.gnome2/vfolders/applications/',
            '~/.kde/share/apps/RecentDocuments/', '~/.kde/share/mimelnk',
            '~/.kde/share/mimelnk/application/ram.desktop',
            '~/.kde2/share/mimelnk/application/', '~/.kde2/share/applnk'
        ]

        if 'posix' == os.name and 'desktop_entry' == option_id:
            for dirname in menu_dirs:
                for filename in [
                        fn for fn in children_in_directory(dirname, False)
                        if fn.endswith('.desktop')
                ]:
                    if Unix.is_broken_xdg_desktop(filename):
                        yield Command.Delete(filename)

        # unwanted locales
        if 'posix' == os.name and 'localizations' == option_id:
            for path in Unix.locales.localization_paths(
                    locales_to_keep=options.get_languages()):
                if os.path.isdir(path):
                    for f in FileUtilities.children_in_directory(path, True):
                        yield Command.Delete(f)
                yield Command.Delete(path)

        # Windows logs
        if 'nt' == os.name and 'logs' == option_id:
            paths = (
                '$ALLUSERSPROFILE\\Application Data\\Microsoft\\Dr Watson\\*.log',
                '$ALLUSERSPROFILE\\Application Data\\Microsoft\\Dr Watson\\user.dmp',
                '$LocalAppData\\Microsoft\\Windows\\WER\\ReportArchive\\*\\*',
                '$LocalAppData\\Microsoft\\Windows\WER\\ReportQueue\\*\\*',
                '$programdata\\Microsoft\\Windows\\WER\\ReportArchive\\*\\*',
                '$programdata\\Microsoft\\Windows\\WER\\ReportQueue\\*\\*',
                '$localappdata\\Microsoft\\Internet Explorer\\brndlog.bak',
                '$localappdata\\Microsoft\\Internet Explorer\\brndlog.txt',
                '$windir\\*.log',
                '$windir\\imsins.BAK',
                '$windir\\OEWABLog.txt',
                '$windir\\SchedLgU.txt',
                '$windir\\ntbtlog.txt',
                '$windir\\setuplog.txt',
                '$windir\\REGLOCS.OLD',
                '$windir\\Debug\\*.log',
                '$windir\\Debug\\Setup\\UpdSh.log',
                '$windir\\Debug\\UserMode\\*.log',
                '$windir\\Debug\\UserMode\\ChkAcc.bak',
                '$windir\\Debug\\UserMode\\userenv.bak',
                '$windir\\Microsoft.NET\Framework\*\*.log',
                '$windir\\pchealth\\helpctr\\Logs\\hcupdate.log',
                '$windir\\security\\logs\\*.log',
                '$windir\\security\\logs\\*.old',
                '$windir\\SoftwareDistribution\\*.log',
                '$windir\\SoftwareDistribution\\DataStore\\Logs\\*',
                '$windir\\system32\\TZLog.log',
                '$windir\\system32\\config\\systemprofile\\Application Data\\Microsoft\\Internet Explorer\\brndlog.bak',
                '$windir\\system32\\config\\systemprofile\\Application Data\\Microsoft\\Internet Explorer\\brndlog.txt',
                '$windir\\system32\\LogFiles\\AIT\\AitEventLog.etl.???',
                '$windir\\system32\\LogFiles\\Firewall\\pfirewall.log*',
                '$windir\\system32\\LogFiles\\Scm\\SCM.EVM*',
                '$windir\\system32\\LogFiles\\WMI\\Terminal*.etl',
                '$windir\\system32\\LogFiles\\WMI\\RTBackup\EtwRT.*etl',
                '$windir\\system32\\wbem\\Logs\\*.lo_',
                '$windir\\system32\\wbem\\Logs\\*.log',
            )

            for path in paths:
                expanded = expandvars(path)
                for globbed in glob.iglob(expanded):
                    files += [globbed]

        # memory
        if sys.platform.startswith('linux') and 'memory' == option_id:
            yield Command.Function(None, Memory.wipe_memory, _('Memory'))

        # memory dump
        # how to manually create this file
        # http://www.pctools.com/guides/registry/detail/856/
        if 'nt' == os.name and 'memory_dump' == option_id:
            fname = expandvars('$windir\\memory.dmp')
            if os.path.exists(fname):
                files += [fname]
            for fname in glob.iglob(expandvars('$windir\\Minidump\\*.dmp')):
                files += [fname]

        # most recently used documents list
        if 'posix' == os.name and 'recent_documents' == option_id:
            files += [os.path.expanduser("~/.recently-used")]
            # GNOME 2.26 (as seen on Ubuntu 9.04) will retain the list
            # in memory if it is simply deleted, so it must be shredded
            # (or at least truncated).
            #
            # GNOME 2.28.1 (Ubuntu 9.10) and 2.30 (10.04) do not re-read
            # the file after truncation, but do re-read it after
            # shredding.
            #
            # https://bugzilla.gnome.org/show_bug.cgi?id=591404
            for pathname in [
                    "~/.recently-used.xbel",
                    "~/.local/share/recently-used.xbel"
            ]:
                pathname = os.path.expanduser(pathname)
                if os.path.lexists(pathname):
                    yield Command.Shred(pathname)
                    if HAVE_GTK:
                        gtk.RecentManager().purge_items()

        if 'posix' == os.name and 'rotated_logs' == option_id:
            for path in Unix.rotated_logs():
                yield Command.Delete(path)

        # temporary files
        if 'posix' == os.name and 'tmp' == option_id:
            dirnames = ['/tmp', '/var/tmp']
            for dirname in dirnames:
                for path in children_in_directory(dirname, True):
                    is_open = FileUtilities.openfiles.is_open(path)
                    ok = not is_open and os.path.isfile(path) and \
                        not os.path.islink(path) and \
                        FileUtilities.ego_owner(path) and \
                        not self.whitelisted(path)
                    if ok:
                        yield Command.Delete(path)

        # temporary files
        if 'nt' == os.name and 'tmp' == option_id:
            dirname = expandvars("$USERPROFILE\\Local Settings\\Temp\\")
            # whitelist the folder %TEMP%\Low but not its contents
            # https://bugs.launchpad.net/bleachbit/+bug/1421726
            low = os.path.join(dirname, 'low').lower()
            for filename in children_in_directory(dirname, True):
                if not low == filename.lower():
                    yield Command.Delete(filename)
            dirname = expandvars("$windir\\temp\\")
            for filename in children_in_directory(dirname, True):
                yield Command.Delete(filename)

        # trash
        if 'posix' == os.name and 'trash' == option_id:
            dirname = os.path.expanduser("~/.Trash")
            for filename in children_in_directory(dirname, False):
                yield Command.Delete(filename)
            # fixme http://www.ramendik.ru/docs/trashspec.html
            # http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
            # ~/.local/share/Trash
            # * GNOME 2.22, Fedora 9
            # * KDE 4.1.3, Ubuntu 8.10
            dirname = os.path.expanduser("~/.local/share/Trash/files")
            for filename in children_in_directory(dirname, True):
                yield Command.Delete(filename)
            dirname = os.path.expanduser("~/.local/share/Trash/info")
            for filename in children_in_directory(dirname, True):
                yield Command.Delete(filename)
            dirname = os.path.expanduser("~/.local/share/Trash/expunged")
            # [email protected] tells me that the trash
            # backend puts files in here temporary, but in some situations
            # the files are stuck.
            for filename in children_in_directory(dirname, True):
                yield Command.Delete(filename)

        # clipboard
        if HAVE_GTK and 'clipboard' == option_id:

            def clear_clipboard():
                gtk.gdk.threads_enter()
                clipboard = gtk.clipboard_get()
                clipboard.set_text("")
                gtk.gdk.threads_leave()
                return 0

            yield Command.Function(None, clear_clipboard, _('Clipboard'))

        # overwrite free space
        shred_drives = options.get_list('shred_drives')
        if 'free_disk_space' == option_id and shred_drives:
            for pathname in shred_drives:
                # TRANSLATORS: 'Free' means 'unallocated.'
                # %s expands to a path such as C:\ or /tmp/
                display = _("Overwrite free disk space %s") % pathname

                def wipe_path_func():
                    for ret in FileUtilities.wipe_path(pathname, idle=True):
                        # Yield control to GTK idle because this process
                        # is very slow.  Also display progress.
                        yield ret
                    yield 0

                yield Command.Function(None, wipe_path_func, display)

        # MUICache
        if 'nt' == os.name and 'muicache' == option_id:
            keys = (
                'HKCU\\Software\\Microsoft\\Windows\\ShellNoRoam\\MUICache',
                'HKCU\\Software\\Classes\\Local Settings\\Software\\Microsoft\\Windows\\Shell\\MuiCache'
            )
            for key in keys:
                yield Command.Winreg(key, None)

        # prefetch
        if 'nt' == os.name and 'prefetch' == option_id:
            for path in glob.iglob(expandvars('$windir\\Prefetch\\*.pf')):
                yield Command.Delete(path)

        # recycle bin
        if 'nt' == os.name and 'recycle_bin' == option_id:
            # This method allows shredding
            for path in Windows.get_recycle_bin():
                yield Command.Delete(path)
            # If there were any files deleted, Windows XP will show the
            # wrong icon for the recycle bin indicating it is not empty.
            # The icon will be incorrect until logging in to Windows again
            # or until it is emptied using the Windows API call for emptying
            # the recycle bin.

            # Windows 10 refreshes the recycle bin icon when the user
            # opens the recycle bin folder.

            # This is a hack to refresh the icon.
            import tempfile
            tmpdir = tempfile.mkdtemp()
            Windows.move_to_recycle_bin(tmpdir)
            try:
                Windows.empty_recycle_bin(None, True)
            except:
                logger = logging.getLogger(__name__)
                logger.info('error in empty_recycle_bin()', exc_info=True)

        # Windows Updates
        if 'nt' == os.name and 'updates' == option_id:
            for wu in Windows.delete_updates():
                yield wu

        # return queued files
        for filename in files:
            if os.path.lexists(filename):
                yield Command.Delete(filename)
Exemplo n.º 10
0
    def get_commands(self, option_id):
        # This variable will collect fully expanded file names, and
        # at the end of this function, they will be checked they exist
        # and processed through Command.Delete().
        files = []

        # cache
        if 'posix' == os.name and 'cache' == option_id:
            dirname = os.path.expanduser("~/.cache/")
            for filename in children_in_directory(dirname, True):
                if self.whitelisted(filename):
                    continue
                files += [filename]

        # custom
        if 'custom' == option_id:
            for (c_type, c_path) in options.get_custom_paths():
                if 'file' == c_type:
                    files += [c_path]
                elif 'folder' == c_type:
                    files += [c_path]
                    for path in children_in_directory(c_path, True):
                        files += [path]
                else:
                    raise RuntimeError(
                        'custom folder has invalid type %s' % c_type)

        # menu
        menu_dirs = ['~/.local/share/applications',
                     '~/.config/autostart',
                     '~/.gnome/apps/',
                     '~/.gnome2/panel2.d/default/launchers',
                     '~/.gnome2/vfolders/applications/',
                     '~/.kde/share/apps/RecentDocuments/',
                     '~/.kde/share/mimelnk',
                     '~/.kde/share/mimelnk/application/ram.desktop',
                     '~/.kde2/share/mimelnk/application/',
                     '~/.kde2/share/applnk']

        if 'posix' == os.name and 'desktop_entry' == option_id:
            for dirname in menu_dirs:
                for filename in [fn for fn in children_in_directory(dirname, False)
                                 if fn.endswith('.desktop')]:
                    if Unix.is_broken_xdg_desktop(filename):
                        yield Command.Delete(filename)

        # unwanted locales
        if 'posix' == os.name and 'localizations' == option_id:
            for path in Unix.locales.localization_paths(locales_to_keep=options.get_languages()):
                if os.path.isdir(path):
                    for f in FileUtilities.children_in_directory(path, True):
                        yield Command.Delete(f)
                yield Command.Delete(path)

        # Windows logs
        if 'nt' == os.name and 'logs' == option_id:
            paths = (
                '$ALLUSERSPROFILE\\Application Data\\Microsoft\\Dr Watson\\*.log',
                '$ALLUSERSPROFILE\\Application Data\\Microsoft\\Dr Watson\\user.dmp',
                '$LocalAppData\\Microsoft\\Windows\\WER\\ReportArchive\\*\\*',
                '$LocalAppData\\Microsoft\\Windows\WER\\ReportQueue\\*\\*',
                '$programdata\\Microsoft\\Windows\\WER\\ReportArchive\\*\\*',
                '$programdata\\Microsoft\\Windows\\WER\\ReportQueue\\*\\*',
                '$localappdata\\Microsoft\\Internet Explorer\\brndlog.bak',
                '$localappdata\\Microsoft\\Internet Explorer\\brndlog.txt',
                '$windir\\*.log',
                '$windir\\imsins.BAK',
                '$windir\\OEWABLog.txt',
                '$windir\\SchedLgU.txt',
                '$windir\\ntbtlog.txt',
                '$windir\\setuplog.txt',
                '$windir\\REGLOCS.OLD',
                '$windir\\Debug\\*.log',
                '$windir\\Debug\\Setup\\UpdSh.log',
                '$windir\\Debug\\UserMode\\*.log',
                '$windir\\Debug\\UserMode\\ChkAcc.bak',
                '$windir\\Debug\\UserMode\\userenv.bak',
                '$windir\\Microsoft.NET\Framework\*\*.log',
                '$windir\\pchealth\\helpctr\\Logs\\hcupdate.log',
                '$windir\\security\\logs\\*.log',
                '$windir\\security\\logs\\*.old',
                '$windir\\SoftwareDistribution\\*.log',
                '$windir\\SoftwareDistribution\\DataStore\\Logs\\*',
                '$windir\\system32\\TZLog.log',
                '$windir\\system32\\config\\systemprofile\\Application Data\\Microsoft\\Internet Explorer\\brndlog.bak',
                '$windir\\system32\\config\\systemprofile\\Application Data\\Microsoft\\Internet Explorer\\brndlog.txt',
                '$windir\\system32\\LogFiles\\AIT\\AitEventLog.etl.???',
                '$windir\\system32\\LogFiles\\Firewall\\pfirewall.log*',
                '$windir\\system32\\LogFiles\\Scm\\SCM.EVM*',
                '$windir\\system32\\LogFiles\\WMI\\Terminal*.etl',
                '$windir\\system32\\LogFiles\\WMI\\RTBackup\EtwRT.*etl',
                '$windir\\system32\\wbem\\Logs\\*.lo_',
                '$windir\\system32\\wbem\\Logs\\*.log', )

            for path in paths:
                expanded = os.path.expandvars(path)
                for globbed in glob.iglob(expanded):
                    files += [globbed]

        # memory
        if sys.platform.startswith('linux') and 'memory' == option_id:
            yield Command.Function(None, Memory.wipe_memory, _('Memory'))

        # memory dump
        # how to manually create this file
        # http://www.pctools.com/guides/registry/detail/856/
        if 'nt' == os.name and 'memory_dump' == option_id:
            fname = os.path.expandvars('$windir\\memory.dmp')
            if os.path.exists(fname):
                files += [fname]
            for fname in glob.iglob(os.path.expandvars('$windir\\Minidump\\*.dmp')):
                files += [fname]

        # most recently used documents list
        if 'posix' == os.name and 'recent_documents' == option_id:
            files += [os.path.expanduser("~/.recently-used")]
            # GNOME 2.26 (as seen on Ubuntu 9.04) will retain the list
            # in memory if it is simply deleted, so it must be shredded
            # (or at least truncated).
            #
            # GNOME 2.28.1 (Ubuntu 9.10) and 2.30 (10.04) do not re-read
            # the file after truncation, but do re-read it after
            # shredding.
            #
            # https://bugzilla.gnome.org/show_bug.cgi?id=591404
            for pathname in ["~/.recently-used.xbel", "~/.local/share/recently-used.xbel"]:
                pathname = os.path.expanduser(pathname)
                if os.path.lexists(pathname):
                    yield Command.Shred(pathname)
                    if HAVE_GTK:
                        gtk.RecentManager().purge_items()

        if 'posix' == os.name and 'rotated_logs' == option_id:
            for path in Unix.rotated_logs():
                yield Command.Delete(path)

        # temporary files
        if 'posix' == os.name and 'tmp' == option_id:
            dirnames = ['/tmp', '/var/tmp']
            for dirname in dirnames:
                for path in children_in_directory(dirname, True):
                    is_open = FileUtilities.openfiles.is_open(path)
                    ok = not is_open and os.path.isfile(path) and \
                        not os.path.islink(path) and \
                        FileUtilities.ego_owner(path) and \
                        not self.whitelisted(path)
                    if ok:
                        yield Command.Delete(path)

        # temporary files
        if 'nt' == os.name and 'tmp' == option_id:
            dirname = os.path.expandvars(
                "$USERPROFILE\\Local Settings\\Temp\\")
            # whitelist the folder %TEMP%\Low but not its contents
            # https://bugs.launchpad.net/bleachbit/+bug/1421726
            low = os.path.join(dirname, 'low').lower()
            for filename in children_in_directory(dirname, True):
                if not low == filename.lower():
                    yield Command.Delete(filename)
            dirname = os.path.expandvars("$windir\\temp\\")
            for filename in children_in_directory(dirname, True):
                yield Command.Delete(filename)

        # trash
        if 'posix' == os.name and 'trash' == option_id:
            dirname = os.path.expanduser("~/.Trash")
            for filename in children_in_directory(dirname, False):
                yield Command.Delete(filename)
            # fixme http://www.ramendik.ru/docs/trashspec.html
            # http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
            # ~/.local/share/Trash
            # * GNOME 2.22, Fedora 9
            # * KDE 4.1.3, Ubuntu 8.10
            dirname = os.path.expanduser("~/.local/share/Trash/files")
            for filename in children_in_directory(dirname, True):
                yield Command.Delete(filename)
            dirname = os.path.expanduser("~/.local/share/Trash/info")
            for filename in children_in_directory(dirname, True):
                yield Command.Delete(filename)
            dirname = os.path.expanduser("~/.local/share/Trash/expunged")
            # [email protected] tells me that the trash
            # backend puts files in here temporary, but in some situations
            # the files are stuck.
            for filename in children_in_directory(dirname, True):
                yield Command.Delete(filename)

        # clipboard
        if HAVE_GTK and 'clipboard' == option_id:
            def clear_clipboard():
                gtk.gdk.threads_enter()
                clipboard = gtk.clipboard_get()
                clipboard.set_text("")
                gtk.gdk.threads_leave()
                return 0
            yield Command.Function(None, clear_clipboard, _('Clipboard'))

        # overwrite free space
        shred_drives = options.get_list('shred_drives')
        if 'free_disk_space' == option_id and shred_drives:
            for pathname in shred_drives:
                # TRANSLATORS: 'Free' means 'unallocated.'
                # %s expands to a path such as C:\ or /tmp/
                display = _("Overwrite free disk space %s") % pathname

                def wipe_path_func():
                    for ret in FileUtilities.wipe_path(pathname, idle=True):
                        # Yield control to GTK idle because this process
                        # is very slow.  Also display progress.
                        yield ret
                    yield 0
                yield Command.Function(None, wipe_path_func, display)

        # MUICache
        if 'nt' == os.name and 'muicache' == option_id:
            keys = (
                'HKCU\\Software\\Microsoft\\Windows\\ShellNoRoam\\MUICache',
                'HKCU\\Software\\Classes\\Local Settings\\Software\\Microsoft\\Windows\\Shell\\MuiCache')
            for key in keys:
                yield Command.Winreg(key, None)

        # prefetch
        if 'nt' == os.name and 'prefetch' == option_id:
            for path in glob.iglob(os.path.expandvars('$windir\\Prefetch\\*.pf')):
                yield Command.Delete(path)

        # recycle bin
        if 'nt' == os.name and 'recycle_bin' == option_id:
            # This method allows shredding
            for path in Windows.get_recycle_bin():
                yield Command.Delete(path)
            # If there were any files deleted, Windows XP will show the
            # wrong icon for the recycle bin indicating it is not empty.
            # The icon will be incorrect until logging in to Windows again
            # or until it is emptied using the Windows API call for emptying
            # the recycle bin.

            # Windows 10 refreshes the recycle bin icon when the user
            # opens the recycle bin folder.

            # This is a hack to refresh the icon.
            import tempfile
            tmpdir = tempfile.mkdtemp()
            Windows.move_to_recycle_bin(tmpdir)
            try:
                Windows.empty_recycle_bin(None, True)
            except:
                logger = logging.getLogger(__name__)
                logger.info('error in empty_recycle_bin()', exc_info=True)

        # Windows Updates
        if 'nt' == os.name and 'updates' == option_id:
            for wu in Windows.delete_updates():
                yield wu

        # return queued files
        for filename in files:
            if os.path.lexists(filename):
                yield Command.Delete(filename)