bpf.py 文件源码

def get_if_raw_addr(ifname):
    """Returns the IPv4 address configured on 'ifname', packed with inet_pton."""

    # Get ifconfig output
    try:
        fd = os.popen("%s %s" % (conf.prog.ifconfig, ifname))
    except OSError, msg:
        raise Scapy_Exception("Failed to execute ifconfig: (%s)" % msg)

    # Get IPv4 addresses
    addresses = [l for l in fd.readlines() if l.find("netmask") >= 0]
    if not addresses:
        raise Scapy_Exception("No IPv4 address found on %s !" % ifname)

    # Pack the first address
    address = addresses[0].split(' ')[1]
    return socket.inet_pton(socket.AF_INET, address)