answer = send_command(sock, "info block")
    return re.search(": /tmp", answer) is not None

def read_netinfo(filename):
    """ Reads network information from start script """
    with open(filename, "r") as f:
        for line in f:
            match = re.search("-net nic,(?:\\S*,)?macaddr=(\\S+) -net ([^, ]+)", line)
            if match:
                f = {"mac":match.group(1)}
                if match.group(2) == "user":
                    f["iface"] = "user"
                elif match.group(2) == "bridge":
                    f["iface"] = re.search("br=(\\S+)", line).group(1)
                else:

def cmd_cdrom(options):
    """ vws cdrom """
    if options.id  is None:
        # Search for devices which could be interpreted as CDROM
        devlist = send_command(options.sock, "info block")
        idx = devlist.find("info block")
        if idx != -1:
            devlist = devlist[devlist.find("\n", idx)+1:]
        for dev in  devlist.split("\r\n\r\n"):
            if dev.find("\n    Removable device: ") == -1:
                continue
            if dev.startswith("floppy"):
                continue
            dev_id = dev[:dev.find(":")]
            idx = dev_id.find(" ")
            if idx != -1:
                dev_id = dev[:idx]
            options.id = dev_id
            break
    if options.id is None:
        print("No CDROM device found among:\n" + devlist, file=sys.stderr)
        return 1
    if options.file == "":
        print("Please specify either --eject or iso image", file=sys.stderr)
        return 1
    if options.file is None:

    else:
        print(send_command(options.sock, "stopcapture " + match.group(1)))

def cmd_sendkey(options):
    """ vws sendkey """
    for keyspec in options.keyspec:
        if keyspec == " ":
            keyspec = "spc"
        print(send_command(options.sock, "sendkey " + keyspec))

def cmd_version(_):
    """ vws cersion """
    print(VERSION)

    # Parse argument
    args = ArgumentParser(description="Manage Virtual Workstations")
    cmds = args.add_subparsers(dest='command', help="sub-command help")
    p = cmds.add_parser("list", help="List existing VWs",
                        description="List existing VWs")
    p.add_argument("-l", "--state", const=True, default=False, dest='state',
                   action='store_const', help='Show state of the machine')
    p.add_argument('-u', "--usb", action='store_const', const=True,
                   default=False, dest='usb', help='Show connected USB devices')
    p.add_argument("pattern", nargs='*', default='*', help="Name patterns")
    p = cmds.add_parser("version", help="show vws version")
    p = cmds.add_parser("autostart",
                        help="Autostart all VMs marked as autostartable")
    p = cmds.add_parser("shutdown", help="shut down all running VMs")
    p.add_argument('-w', "--wait",
                   help="wait until all machines would be shutdown",
                   action="store_const", const=True, default=False, dest="wait")
    p.add_argument('-t', "--timeout", type=int, default=90,
                   help="how long to way for VMs shutdown before forcing it off")
    # Power management
    p = new_command(cmds, 'start', help='Start VW and connect to console',
                    description="Start VW if not running and connect " +

    p.add_argument('snapname', help='name of snapshot to revert to')
    p = new_command(cmds, 'commit',
                    help='Commit snapshot changes into backing file')
    p = new_command(cmds, 'snapshots', help='List existing snapshots')
    # Screenshoits and recording
    p = new_command(cmds, 'screenshot', help='take a screenshot',
                    description='Takes a screenshot',
                    epilog="Writes current screen contents of the virtual " +
                    "machine into PPM format file")
    p.add_argument('filename', metavar='filename.ppm',
                   help='PPM image filename to write screenshot to')
    p = new_command(cmds, 'record', help='Record audio output from VM')
    p.add_argument('filename', help='wav file to record autdio to')
    new_command(cmds, 'stoprecord', help='stop recording audio')
    p = new_command(cmds, 'sendkey', help='Send a keystroke to VM',
                    description='Send a key combination into VM',
                    epilog='Each key combination should be passed as separate' +
                    'argument.\nAll non-alphanumeric keys should be passed by' +

    parsed_args = args.parse_args(sys.argv[1:])

    os.umask(0o002)
    # Create command is totally different, so it is handled separately
    if parsed_args.command == 'create':
        try:
            cmd_create(parsed_args)
        except Exception as ex: # pylint: disable=broad-except
            print(str(ex), file=sys.stderr)
            if hasattr(parsed_args, "dir"):
                import shutil
                shutil.rmtree(parsed_args.dir)
                sys.exit(1)
        sys.exit(0)