/**
* Set EAP-TLS Statemachine in Start-State and send EAP-Start out. Change the State if a Identity
* Frame was received.
*
* @author Felix Lange <*****@*****.**>
*/
public class EapStartState implements EapState {
EapolMachine eapolMachine;
EapFactory eaptlsfactory = new EapTlsFactory();
NetworkHandler nic = NetworkHandler.getInstance();
byte[] data = {};
public EapStartState(EapolMachine eapolMachine) {
this.eapolMachine = eapolMachine;
}
@Override
public void send() {
EAPFrame eapstart = eaptlsfactory.createFrame("STARTEAP", 0);
nic.sendFrame(eapstart.getFrame());
}
@Override
public void sendTLS(byte[] tlspacket) {}
@Override
public byte[] receive() {
data = nic.receiveFrame();
int id = (int) data[19]; // Get ID
// Identity Frame?
if (data[22] == 0x01) {
eapolMachine.setState(new IdentityState(eapolMachine, id));
} else {
eapolMachine.setState(new EapStartState(eapolMachine));
}
return data;
}
@Override
public String getState() {
return "EapStartState";
}
@Override
public int getID() {
return (int) data[19];
}
}
/**
* State for Client Hello. Sends the Client Hello Frame. Change state if a Failure,Frag, Frag Start,
* Nofrag or Frag End Frame was received.
*
* @author Felix Lange <*****@*****.**>
*/
public class HelloState implements EapState {
private static final Logger LOGGER = LogManager.getLogger(HelloState.class);
EapolMachine eapolMachine;
int id;
EapFactory eaptlsfactory = new EapTlsFactory();
NetworkHandler nic = NetworkHandler.getInstance();
byte[] data = {};
public HelloState(EapolMachine eapolMachine, int id) {
this.eapolMachine = eapolMachine;
this.id = id;
}
@Override
public void send() {
// TODO Auto-generated method stub
}
@Override
public void sendTLS(byte[] tlspacket) {
EAPFrame eapstart = eaptlsfactory.createFrame("EAPTLSCH", id, tlspacket);
LOGGER.debug("sendTLS(): {}", eapolMachine.getState());
nic.sendFrame(eapstart.getFrame());
}
@Override
public byte[] receive() {
data = nic.receiveFrame();
id = (int) data[19]; // Get ID
LOGGER.debug("receive() TLS-FLAG: {}", Byte.toString(data[23]));
if (data[23] == (byte) 0xc0) {
eapolMachine.setState(new FragStartState(eapolMachine, id));
} else if (data[23] == (byte) 0x80) {
eapolMachine.setState(new NoFragState(eapolMachine, id)); // Nur zum
// Testen!
// Muss
// durch
// seperaten
// State
// ersetzt
// werden
} else if (data[18] == 0x04) {
eapolMachine.setState(new FailureState(eapolMachine, id));
} else {
eapolMachine.setState(new FragState(eapolMachine, id));
}
LOGGER.debug("change State to: {}", eapolMachine.getState());
return data;
}
@Override
public String getState() {
return "HelloState";
}
@Override
public int getID() {
return id;
}
}
/**
* Last state in the protocolflow, sends the last EAP-ACK and switch to Success or Failure. This
* depends on the received frame.
*
* @author Felix Lange <*****@*****.**>
*/
public class FinishedState implements EapState {
private static final Logger LOGGER = LogManager.getLogger(FragEndState.class);
EapolMachine eapolMachine;
int id;
EapFactory eaptlsfactory = new EapTlsFactory();
NetworkHandler nic = NetworkHandler.getInstance();
byte[] data = {};
public FinishedState(EapolMachine eapolMachine, int id) {
this.eapolMachine = eapolMachine;
this.id = id;
}
@Override
public void send() {
EAPFrame eapstart = eaptlsfactory.createFrame("EAPTLSFRAGACK", id);
LOGGER.debug("send(): {}", eapolMachine.getState());
nic.sendFrame(eapstart.getFrame());
}
@Override
public void sendTLS(byte[] tlspacket) {
EAPFrame eapstart = eaptlsfactory.createFrame("EAPTLSCH", id, tlspacket);
LOGGER.debug("sendTLS(): {}", eapolMachine.getState());
nic.sendFrame(eapstart.getFrame());
}
@Override
public byte[] receive() {
data = nic.receiveFrame();
id = (int) data[19]; // Get ID
if (data[18] == (byte) 0x03) {
eapolMachine.setState(new SuccessState(eapolMachine, id));
} else if (data[18] == (byte) 0x04) {
eapolMachine.setState(new FailureState(eapolMachine, id));
}
return data;
}
@Override
public String getState() {
return "FinishedState";
}
@Override
public int getID() {
return id;
}
}