ethernet_sniffer.py 文件源码

def main():
    connection=socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.ntohs(3))
    while True:
        raw_data,addr=connection.recvfrom(65536)
        dest_mac, src_mac, eth_proto, data = ethernet_frame(raw_data)
        print('\nEthernet Frame:')
        print(TAB_1+'Destination: {}, Source: {}, Protocol: {}'.format(dest_mac,src_mac,eth_proto))

        if eth_proto==8:
            (version,header_length,ttl,proto,src,target,data)=ipv4_packet(data)
            print(TAB_1+'IPv4 Packet:')
            print(TAB_2 + 'Version: {}, Header Length: {}, TTL: {},'.format(version,header_length,ttl))
            print(TAB_2 + 'Protocol: {}, Source: {}, Target: {}'.format(proto, src, target))

        elif eth_proto==1:
             icmp = ICMP(ipv4.data)