Hello Everyone
So i had to create a program that reads pcap files, takes the IP packet and shows it in a certain format. I had to ask for help and the person that helped me, didn't really explain what each line is doing. So if anyone can help me ill appreciate it.
So i had to create a program that reads pcap files, takes the IP packet and shows it in a certain format. I had to ask for help and the person that helped me, didn't really explain what each line is doing. So if anyone can help me ill appreciate it.
def main(): try: sys.argv[1] dmp_file = sys.argv[1] fp_dmp_file = open(dmp_file,'rb') pcap = dpkt.pcap.Reader(fp_dmp_file) pack_num = 0 total_size = 0 for ts, buf in pcap: pkt_len = len(buf) eth = dpkt.ethernet.Ethernet(buf) ip = eth.data src_ip = socket.inet_ntop(socket.AF_INET, ip.src) dst_ip = socket.inet_ntop(socket.AF_INET, ip.dst) src_port = ip.data.sport dst_port = ip.data.dport ttl = ip.ttl protocol = ip.get_proto(ip.p).__name__ print_packet_info(ts,src_ip,src_port,dst_ip,dst_port,protocol,pkt_len,ttl) pack_num += 1 total_size += pkt_len avg_size = total_size/pack_num print_summary(pack_num,total_size,avg_size) except Exception as e: #print(e) print("Error: please supply pcap filename!\n") if __name__ == '__main__': main()