if idx <= 0:
                continue
            name = line[:idx]
            if name == "bridge name":
                continue
            lst.append(name)
    return lst

def parse_arp(iface):
    """
    Returns map which maps mac addresses to IPs for specified interface"
    """
    addr_map = {}
    pipe = os.popen(config.get("tools","arp")+" -n -i "+iface, "r")
    for line in pipe:
        data = line.split() 
        mac=data[2]
        if mac == "HWAddress":
            continue
        if mac == iface:
            # Foind line with (incomplete) entry
            continue
        addr_map[data[2]]=data[0]
    return addr_map

def validate_size(size):
    """ Checks if size argument has proper format """
    return re.match('\\d+[KMG]', size) is not None

def get_drives(vm_dir):
    """ Return list of drive files in the VW directory """

    return result

def snapshot_mode(sock):
    """ Returns True if VM is running in snapshot mode """
    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,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:
                   f["iface"]="unknown";
              return f
    return {"iface":"unknown","mac":"?","ip":"?"}
def get_netinfo(sock):
    """ Gets network information from the running VM """
    answer = send_command(sock, "info network")
    match=re.search("bridge\\.0:.*,br=(\\S+).*macaddr=(\\S+)", answer, re.S)
    if match:
        return {"iface":match.group(1), "mac":match.group(2)}
    else:
        match = re.search("user.0:.*net=([^,]+).*\n.*macaddr=(\\S+)",answer)
        if match:
           return {"iface":"user", "ip":match.group(1), 
                    "mac":match.group(2)}
        else:
           print >>sys.stderr,answer
           return {"iface":"unknown","ip":"?","mac":"?","card":"?"}
#
# command implementation
#

def cmd_spiceuri(options):
    """ vws spiceuri """
    print spiceurl(options.sock)

    count = 0
    search_path = [("private",os.environ['HOME'] + "/VWs"),
                   ("shared",config.get("directories", "SharedVMs")),
                   ("autostart",config.get("directories", "AutostartVMs"))]

    maxlen = 0
    vms = []
    bridges = set()
    for (vmtype,dirname) in search_path:
        if not os.access(dirname + "/.", os.X_OK):
            continue
        for vmname in os.listdir(dirname):
            if os.access(dirname + "/" + vmname + "/start", os.X_OK):
                count += 1
                f = {"name":vmname}
                if maxlen < len(vmname):
                    maxlen = len(vmname)
                if options.state:
                    f["type"]=vmtype
                    sock = connect_vm(dirname + "/" + vmname)
                    if sock is None:
                        f.update({"state":"stopped","uri":"-","ip":"-"})
                        f.update(read_netinfo(dirname + "/" + vmname + "/start"))
                    else:
                        uri=spiceurl(sock)
                        f["uri"]=uri[uri.rindex(":")+1:]
                        f.update(get_netinfo(sock))
                        if "ip" not in f:
                            bridges.add(f["iface"])
                        sock.shutdown(socket.SHUT_RDWR)
                        sock.close()
                        f["state"] = "running"


                vms.append(f)
    arp_data={}
    for bridge in bridges:
        arp_data.update(parse_arp(bridge))
    for f in sorted(vms,key=lambda x: x["name"]):
        if "state" in f:
            if "mac" in f and not "ip" in f:
                if f["mac"] in arp_data:
                    f["ip"] = arp_data[f["mac"]]
                else:
                    f["ip"] = "-"
            f["name"] = f["name"].ljust(maxlen)
            print "%(name)s %(state)s   %(type)-9s %(uri)-4s %(iface)-5s %(mac)s %(ip)s " % f
        else:
            print f["name"]
    if not count:
        sys.exit(1)

def cmd_screenshot(options):
    """ vws screenshot """
    from os.path import abspath
    filename = abspath(options.filename)

                      ('diskif', 'virtio'), ('sound', 'hda'), ('arch', arch),
                      ('vga', 'qxl')]:
    config.set('create options', option, value)
config.add_section('tools')
config.set('tools', 'viewer', 'remote-viewer %s')
config.set('tools', 'bridge_list', '/sbin/brctl show')
config.set('tools', 'lsusb', 'lsusb')
config.set('tools', 'arp', '/usr/sbin/arp')
config.add_section('permissions')
config.set('permissions','vm_group','kvm')
config.set('permissions','autostart_user','root')
config.set('permissions','setgid_vm','yes')
# Read configration files
config.read(['/etc/vws.conf', os.environ['HOME'] + '/.vwsrc'])
# Parse argument