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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.UnknownHostException;
import jpcap.JpcapCaptor;
import jpcap.JpcapSender;
import jpcap.NetworkInterface;
import jpcap.NetworkInterfaceAddress;
import jpcap.packet.ARPPacket;
import jpcap.packet.IPPacket;
import jpcap.packet.TCPPacket;
import jpcap.packet.EthernetPacket;
public class CtcpPaq implements Runnable
{
/** This creates an object that captures all the packets from the NIC
*/
static JpcapCaptor captor;
/** This creates an object that sends the ARP poison packets */
static JpcapSender sender;
/** This is an object that reads the input of the user. */
static BufferedReader in = new BufferedReader(new InputStreamReader
(
System.in));
/** This array save the details of network cards. */
static NetworkInterface[] devices;
/** This is the input from the user */
static String str;
/** This is the number of the interface that will be used. */
static int i = 0;
/** Creates the tcp object which is an TCP packet */
static TCPPacket tcp;
/** Creates the ether object which is an Ethernet packet */
static EthernetPacket ether;
/** Creates the ip object which is an IP packet */
static IPPacket ip;
// methode Const qui construit un paquet tcp_request et
//prend en parametre l'adresse ip destination et l'index du
networkInterface
public static TCPPacket Constr(byte[] ip,int i) throws
UnknownHostException
{
// Obtain the list of network interfaces
devices = JpcapCaptor.getDeviceList();
// Creates DEMANDE DE CONNEXION TCP
//port source=12 et dst=34
tcp = new TCPPacket
(3012,5034,100,78,false,false,false,false,true,true,true,true,10,10);
tcp.data=("").getBytes();
// ********************************************************
// Initialisation de l'entete TCP
// ********************************************************
tcp.src_port=12; // Il est
initialisé plutard
tcp.dst_port=34;
tcp.sequence=0; // Il est
initialisé plutard
tcp.offset=5; // taille de l'entête Tcp
tcp.fin=false;
tcp.syn=true;
tcp.rst=false;
tcp.psh=false;
tcp.ack=false;
tcp.urg=false;
tcp.rsv2=false;
//entête
IP*******************************************************************
//SOURCE IP (IPTEST);
/** InetAddress srcip = null;
for(NetworkInterfaceAddress addr:devices[i].addresses)
if(addr.address instanceof Inet4Address){
srcip = addr.address;
break;
} */
byte[] destip = ip;
InetAddress dst_ip = null;
try {
dst_ip = InetAddress.getByAddress(destip);
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
byte[] srcip = new byte[] { (byte) 192, (byte) 168,
(byte) 44, (byte) 4}; ;
InetAddress src_ip = null;
try {
src_ip = InetAddress.getByAddress(srcip);
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//
***************************************************************************************
tcp.setIPv4Parameter(0,false,false,false,0,false,false,false,
0,1010101,100,IPPacket.IPPROTO_TCP,
src_ip,dst_ip);
// Initialisation de l'entete Ip
// ********************************************************
tcp.len=5;
tcp.version=4;
tcp.rsv_tos=0;
tcp.length=0;
tcp.ident=0;
tcp.offset=0;
// Create the Ethernet packet
*****************************************************
//SOURCE MAC & DESTINATION
byte[] macsrc = devices[i].mac_address;
byte[] mac_destination_eth = new byte[]{(byte) 255, (byte) 255,
(byte) 255, (byte) 255, (byte) 255, (byte) 255};
ether = new EthernetPacket();
ether.frametype = EthernetPacket.ETHERTYPE_IP;
ether.src_mac = macsrc;
ether.dst_mac = mac_destination_eth;
tcp.datalink = ether;
//
************************************************************************************
//
**********************************************************************************
return tcp;
}
public static void main(String[] args)
{
// Runs the nic method.
nic();
// Opens the selected device
try {
captor = JpcapCaptor.openDevice(devices[i], 65535, true,
20);
System.out.println("carte ouverte");
} catch (IOException e) {
System.out.println(e.getMessage());
}
// Sets the filter of the captor
try {
captor.setFilter("arp", true);
System.out.println("FILTRE arp ON");
} catch (IOException e) {
System.out.println(e.getMessage());
}
// Initiates the runnable interface
Runnable runnable = new CtcpPaq();
// Initiates the thread.
Thread thread = new Thread(runnable);
// Sets the name of the Thread
thread.setName("CtcpPaq");
// Sets the thread's priority
thread.setPriority(8);
// Runs the Thread
thread.start();
}
/**
* This method finds the available network interface cards and
asks the user
* to choose which one to use for sending the ARP packets.
*
* @param str,
* the input from the user.
* @return i, the number of the network card.
*/
public static int nic()
{
// Obtain the list of network interfaces
devices = JpcapCaptor.getDeviceList();
for (int i = 0; i < devices.length; i++ ) {
System.out.println(i + ": " + devices[i].name + "("+
devices[i].description + ")");
// Prints the IP address for each NIC
for (NetworkInterfaceAddress a : devices[i].addresses) {
System.out.println(" address:" + a.address);
}
}
System.out.print("> Choose the NIC you want to use: ");
// Reads the user's input
try {
str = in.readLine();
} catch (IOException e) {
System.out.println(e.getMessage());
}
i = Integer.parseInt(str);
return i;
}
public void run()
{
TCPPacket p = null;
try {
p = CtcpPaq.Constr(new byte[] { (byte) 192, (byte) 168,(byte) 44,
(byte) 15}, 1);
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(p.toString());
sender = captor.getJpcapSenderInstance();
// Sends the packet
sender.sendPacket(p);
while (true) {
//read a packet from the opened network device
ARPPacket arp = (ARPPacket) captor.getPacket();
if (arp != null) {
System.out.println(arp.toString());
}
}
}
} |
