Esempio n. 1
0
  @Override
  public void initialize(PcapIf pcapIf) {
    packets = new ArrayList<JPacket>();

    // extract source MAC from injection interface
    byte[] srcMac;
    try {
      srcMac = pcapIf.getHardwareAddress();
    } catch (IOException ioe) {
      log.error("Error obtaining injection interface address: ", ioe);
      return;
    }

    // extract a source IPv4 address from injection interface
    byte[] srcIp = NetUtils.getLinkLocal6Addr(pcapIf);
    if (srcIp == null) {
      log.error("Failed to find a IPv6 link-local source address");
      return;
    }

    // get a list of pcap files we'll use for injection
    String[] pcapFiles = JNetPcapUtils.getPcapFilenames(PCAP_DIR);

    // packet headers
    Ethernet eth = new Ethernet();
    Ip6 ip = new Ip6();
    Icmp6 icmp = new Icmp6();

    // load pcap files one-by-one
    for (String pcapFile : pcapFiles) {
      PcapPacket packet = JNetPcapUtils.pcapPacketFromFile(pcapFile);
      if (packet == null) {
        log.warn("No packet found in [{}]", pcapFile);
        continue;
      }

      // validate packet
      if (!packet.hasHeader(eth) || !packet.hasHeader(ip) || !packet.hasHeader(icmp)) {
        log.error("Invalid packet type in [{}]", pcapFile);
        continue;
      }

      // set the source MAC/IP in the packet
      eth.source(srcMac);
      ip.setByteArray(8, srcIp);

      // set destination mac/ip
      for (String[] dst : dstMacIps) {
        eth.destination(NetUtils.getMacBytes(dst[0]));
        ip.setByteArray(24, NetUtils.getAddressBytes(dst[1]));

        // calculate checksums
        eth.calculateChecksum();
        icmp.calculateChecksum();

        // make a deep copy of the packet and add it to the list
        packets.add(new PcapPacket(packet));
      }
    }
  }
 /**
  * Initialize the network packet from the pcap packet.
  *
  * @param packet The captured packet in pcap format.
  */
 private void parsePcapPacket(final PcapPacket packet) {
   this.length = packet.getTotalSize();
   this.timestamp = new Date(packet.getCaptureHeader().timestampInMillis());
   final Tcp tcp = new Tcp();
   if (packet.hasHeader(tcp)) {
     packet.getHeader(tcp);
     this.destinationPort = tcp.destination();
     this.sourcePort = tcp.source();
     this.isAck = tcp.flags_ACK();
     this.isRst = tcp.flags_RST();
     this.isSyn = tcp.flags_SYN();
   }
   final Ip4 ip = new Ip4();
   if (packet.hasHeader(ip)) {
     packet.getHeader(ip);
     this.destinationIp = FormatUtils.ip(ip.destination());
     this.sourceIp = FormatUtils.ip(ip.source());
   }
   final JBuffer storage = new JBuffer(JMemory.Type.POINTER);
   final JBuffer buffer = tcp.peerPayloadTo(storage);
   if (buffer != null) {
     this.data = buffer.getByteArray(0, buffer.size());
   }
 }
        public void nextPacket(PcapPacket pcappacket, String user) {
          if (pcappacket.hasHeader(ip)) {
            if (FormatUtils.ip(ip.source()) != FormatUtils.ip(myinet)
                && FormatUtils.ip(ip.destination()) != FormatUtils.ip(myinet)) {
              System.out.println();
              System.out.println("IP type:\t" + ip.typeEnum());
              System.out.println("IP src:\t-\t" + FormatUtils.ip(ip.source()));
              System.out.println("IP dst:\t-\t" + FormatUtils.ip(ip.destination()));
              readdata = true;
            }
          }
          if (pcappacket.hasHeader(eth) && readdata == true) {
            System.out.println("Ethernet type:\t" + eth.typeEnum());
            System.out.println("Ethernet src:\t" + FormatUtils.mac(eth.source()));
            System.out.println("Ethernet dst:\t" + FormatUtils.mac(eth.destination()));
          }
          if (pcappacket.hasHeader(tcp) && readdata == true) {
            System.out.println("TCP src port:\t" + tcp.source());
            System.out.println("TCP dst port:\t" + tcp.destination());
          } else if (pcappacket.hasHeader(udp) && readdata == true) {
            System.out.println("UDP src port:\t" + udp.source());
            System.out.println("UDP dst port:\t" + udp.destination());
          }
          /*			if (pcappacket.hasHeader(rip) &&
          readdata == true) {
          System.out.println("RIP count:\t" + rip.count());
          System.out.println("RIP header:\t" + rip.getHeader());
          } */
          if (pcappacket.hasHeader(arp) && readdata == true) {

            // System.out.println("ARP decode header:\t" + arp.decodeHeader());
            // System.out.println("ARP hardware type:\t" + arp. hardwareType());
            // System.out.println("ARP hw type descr:\t" + arp.hardwareTypeDescription());
            // System.out.println("ARP hw type enum:\t" + arp.hardwareTypeEnum());
            // System.out.println("ARP hlen:\t-\t" + arp.hlen());
            // System.out.println("ARP operation:\t-\t" + arp.operation());
            // System.out.println("ARP plen:\t-\t" + arp.plen());
            // System.out.println("ARP protocol type:\t" + arp.protocolType());
            // System.out.println("ARP prtcl type descr:\t" + arp.protocolTypeDescription());
            // System.out.println("ARP prtcl type enum:\t" + arp.protocolTypeEnum());
            // System.out.println("ARP sha:\t-\t" + FormatUtils.mac(arp.sha()));
            // System.out.println("ARP sha length:\t-\t" + arp.shaLength());
            // System.out.println("ARP spa:\t-\t" + FormatUtils.ip(arp.spa()));
            // System.out.println("ARP spa length:\t-\t" + arp.spaLength());
            // System.out.println("ARP spa offset:\t-\t" + arp.spaOffset());
            // System.out.println("ARP tha:\t-\t" + FormatUtils.mac(arp.tha()));
            // System.out.println("ARP tha length:\t-\t" + arp.thaLength());
            // System.out.println("ARP tha offset:\t-\t" + arp.thaOffset());
            // System.out.println("ARP tpa:\t-\t" + FormatUtils.ip(arp.tpa()));
            // System.out.println("ARP tpa length:\t-\t" + arp.tpaLength());
            // System.out.println("ARP tpa offset:\t-\t" + arp.tpaOffset());
            System.out.println("ARP Packet!");
            readdata = true;
          }
          if (pcappacket.hasHeader(payload) && readdata == true) {
            payloadContent = payload.getPayload();
            System.out.println("Payload:\n");
            for (int x = 0; x < payloadContent.length; x++) {
              System.out.print(payload.toHexdump());
            }
          }
          if (readdata == true) System.out.println("-\t-\t-\t-\t-");
          readdata = false;
        }