INSTALL

BUILDING SJPCAP

To build sjpcap, type ant from the directory containing this INSTALL file. ant
will compile sjpcap's source files and create sjpcap.jar.

HISTORY

R 0.2 - Parsing robustness enhancements, packet timestamps.
R 0.1 - Initial release.

USING SJPCAP

The following example class provides an overview of how to use sjpcap to
obtain object representations of packets in libpcap-created files.

import edu.gatech.sjpcap.*;

public class PcapPrint{

    public static void main(String[] args){
        PcapParser pcapParser = new PcapParser();
        if(pcapParser.openFile(args[0]) < 0){
            System.err.println("Failed to open " + args[0] + ", exiting.");
            return;
        }

        Packet packet = pcapParser.getPacket();
        while(packet != Packet.EOF){
            if(!(packet instanceof IPPacket)){
                packet = pcapParser.getPacket();
                continue;
            }

            System.out.println("--PACKET--");
            IPPacket ipPacket = (IPPacket) packet;
	    System.out.println("TIME " + ipPacket.timestamp / 1000);
            System.out.println("SRC " + ipPacket.src_ip.getHostAddress());
            System.out.println("DST " + ipPacket.dst_ip.getHostAddress());

            if(ipPacket instanceof UDPPacket){
                UDPPacket udpPacket = (UDPPacket) ipPacket;
                System.out.println("SRC PORT " + udpPacket.src_port);
                System.out.println("DST PORT " + udpPacket.dst_port);
                System.out.println("PAYLOAD LEN " + udpPacket.data.length);
            }
            if(ipPacket instanceof TCPPacket){
                TCPPacket tcpPacket = (TCPPacket) ipPacket;
                System.out.println("SRC PORT " + tcpPacket.src_port);
                System.out.println("DST PORT " + tcpPacket.dst_port);
                System.out.println("PAYLOAD LEN " + tcpPacket.data.length);
            }

            packet = pcapParser.getPacket();
        }
        pcapParser.closeFile();
    }
}