3_6_find_network_interface_status.py 文件源码

def get_interface_status(ifname):
    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    ip_address = socket.inet_ntoa(fcntl.ioctl(
        sock.fileno(),
        0x8915, #SIOCGIFADDR, C socket library sockios.h
        struct.pack(b'256s', bytes(ifname[:15], 'utf-8'))
    )[20:24])
    nm = nmap.PortScanner()         
    nm.scan(ip_address, SAMPLE_PORTS)      
    return nm[ip_address].state()