package examples.authorization;
import gov.nist.javax.sip.clientauthutils.DigestServerAuthenticationHelper;
import javax.sip.*;
import javax.sip.address.*;
import javax.sip.header.*;
import javax.sip.message.*;
import java.util.*;
/**
* This class is a UAC template. Shootist is the guy that shoots and shootme is the guy that gets
* shot and asks for authorization.
*
* @author M. Ranganathan
* @author Kathleen McCallum
*/
public class ShootmeAuth implements SipListener {
private static AddressFactory addressFactory;
private static MessageFactory messageFactory;
private static HeaderFactory headerFactory;
private static SipStack sipStack;
private static final String myAddress = "127.0.0.1";
private static final int myPort = 5070;
protected ServerTransaction inviteTid;
private Response okResponse;
private Request inviteRequest;
private Dialog dialog;
DigestServerAuthenticationHelper dsam;
class MyTimerTask extends TimerTask {
ShootmeAuth shootme;
public MyTimerTask(ShootmeAuth shootme) {
this.shootme = shootme;
}
public void run() {
shootme.sendInviteOK();
}
}
protected static final String usageString = "java " + "examples.shootist.Shootist \n"
+ ">>>> is your class path set to the root?";
private static void usage() {
System.out.println(usageString);
System.exit(0);
}
public void processRequest(RequestEvent requestEvent) {
Request request = requestEvent.getRequest();
ServerTransaction serverTransactionId = requestEvent.getServerTransaction();
System.out.println("\n\nRequest " + request.getMethod() + " received at "
+ sipStack.getStackName() + " with server transaction id " + serverTransactionId);
if (request.getMethod().equals(Request.INVITE)) {
processInvite(requestEvent, serverTransactionId);
} else if (request.getMethod().equals(Request.ACK)) {
processAck(requestEvent, serverTransactionId);
} else if (request.getMethod().equals(Request.BYE)) {
processBye(requestEvent, serverTransactionId);
} else if (request.getMethod().equals(Request.CANCEL)) {
processCancel(requestEvent, serverTransactionId);
}
}
public void processResponse(ResponseEvent responseEvent) {
}
/**
* Process the ACK request. Send the bye and complete the call flow.
*/
public void processAck(RequestEvent requestEvent, ServerTransaction serverTransaction) {
System.out.println("shootme: got an ACK! ");
System.out.println("Dialog State = " + dialog.getState());
}
/**
* Process the invite request.
*/
public void processInvite(RequestEvent requestEvent, ServerTransaction serverTransaction) {
SipProvider sipProvider = (SipProvider) requestEvent.getSource();
Request request = requestEvent.getRequest();
try {
ServerTransaction st = requestEvent.getServerTransaction();
if (st == null) {
st = sipProvider.getNewServerTransaction(request);
}
System.out.println("shootme: got an Invite with Authorization, sending Trying");
// System.out.println("shootme: " + request);
Response response = messageFactory.createResponse(Response.TRYING, request);
st.sendResponse(response);
// Verify AUTHORIZATION !!!!!!!!!!!!!!!!
dsam = new DigestServerAuthenticationHelper();
if (!dsam.doAuthenticatePlainTextPassword(request, "pass")) {
Response challengeResponse = messageFactory.createResponse(
Response.PROXY_AUTHENTICATION_REQUIRED, request);
dsam.generateChallenge(headerFactory, challengeResponse, "nist.gov");
st.sendResponse(challengeResponse);
return;
}
System.out.println("shootme: got an Invite with Authorization, sending Trying");
// System.out.println("shootme: " + request);
dialog = st.getDialog();
st.sendResponse(response);
this.okResponse = messageFactory.createResponse(Response.OK, request);
Address address = addressFactory.createAddress("Shootme <sip:" + myAddress + ":"
+ myPort + ">");
ContactHeader contactHeader = headerFactory.createContactHeader(address);
response.addHeader(contactHeader);
ToHeader toHeader = (ToHeader) okResponse.getHeader(ToHeader.NAME);
toHeader.setTag("4321"); // Application is supposed to set.
okResponse.addHeader(contactHeader);
this.inviteTid = st;
// Defer sending the OK to simulate the phone ringing.
// Answered in 1 second ( this guy is fast at taking calls)
this.inviteRequest = request;
new Timer().schedule(new MyTimerTask(this), 1000);
} catch (Exception ex) {
ex.printStackTrace();
System.exit(0);
}
}
private void sendInviteOK() {
try {
if (inviteTid.getState() != TransactionState.COMPLETED) {
System.out.println("shootme: Dialog state before 200: "
+ inviteTid.getDialog().getState());
inviteTid.sendResponse(okResponse);
System.out.println("shootme: Dialog state after 200: "
+ inviteTid.getDialog().getState());
}
} catch (SipException ex) {
ex.printStackTrace();
} catch (InvalidArgumentException ex) {
ex.printStackTrace();
}
}
/**
* Process the bye request.
*/
public void processBye(RequestEvent requestEvent, ServerTransaction serverTransactionId) {
SipProvider sipProvider = (SipProvider) requestEvent.getSource();
Request request = requestEvent.getRequest();
try {
System.out.println("shootme: got a bye sending OK.");
Response response = messageFactory.createResponse(200, request);
serverTransactionId.sendResponse(response);
System.out.println("Dialog State is " + serverTransactionId.getDialog().getState());
} catch (Exception ex) {
ex.printStackTrace();
System.exit(0);
}
}
public void processCancel(RequestEvent requestEvent, ServerTransaction serverTransactionId) {
SipProvider sipProvider = (SipProvider) requestEvent.getSource();
Request request = requestEvent.getRequest();
try {
System.out.println("shootme: got a cancel.");
if (serverTransactionId == null) {
System.out.println("shootme: null tid.");
return;
}
Response response = messageFactory.createResponse(200, request);
serverTransactionId.sendResponse(response);
if (dialog.getState() != DialogState.CONFIRMED) {
response = messageFactory.createResponse(Response.REQUEST_TERMINATED,
inviteRequest);
inviteTid.sendResponse(response);
}
} catch (Exception ex) {
ex.printStackTrace();
System.exit(0);
}
}
public void processTimeout(javax.sip.TimeoutEvent timeoutEvent) {
Transaction transaction;
if (timeoutEvent.isServerTransaction()) {
transaction = timeoutEvent.getServerTransaction();
} else {
transaction = timeoutEvent.getClientTransaction();
}
System.out.println("state = " + transaction.getState());
System.out.println("dialog = " + transaction.getDialog());
System.out.println("dialogState = " + transaction.getDialog().getState());
System.out.println("Transaction Time out");
}
public void init() {
SipFactory sipFactory = null;
sipStack = null;
sipFactory = SipFactory.getInstance();
sipFactory.setPathName("gov.nist");
Properties properties = new Properties();
properties.setProperty("javax.sip.STACK_NAME", "shootme");
// You need 16 for logging traces. 32 for debug + traces.
// Your code will limp at 32 but it is best for debugging.
properties.setProperty("gov.nist.javax.sip.TRACE_LEVEL", "32");
properties.setProperty("gov.nist.javax.sip.DEBUG_LOG", "shootmedebug.txt");
properties.setProperty("gov.nist.javax.sip.SERVER_LOG", "shootmelog.txt");
try {
// Create SipStack object
sipStack = sipFactory.createSipStack(properties);
System.out.println("sipStack = " + sipStack);
} catch (PeerUnavailableException e) {
// could not find
// gov.nist.jain.protocol.ip.sip.SipStackImpl
// in the classpath
e.printStackTrace();
System.err.println(e.getMessage());
if (e.getCause() != null)
e.getCause().printStackTrace();
System.exit(0);
}
try {
headerFactory = sipFactory.createHeaderFactory();
addressFactory = sipFactory.createAddressFactory();
messageFactory = sipFactory.createMessageFactory();
ListeningPoint lp = sipStack.createListeningPoint("127.0.0.1", myPort, "udp");
ShootmeAuth listener = this;
SipProvider sipProvider = sipStack.createSipProvider(lp);
System.out.println("udp provider " + sipProvider);
sipProvider.addSipListener(listener);
} catch (Exception ex) {
System.out.println(ex.getMessage());
ex.printStackTrace();
usage();
}
}
public static void main(String args[]) {
new ShootmeAuth().init();
}
public void processIOException(IOExceptionEvent exceptionEvent) {
System.out.println("IOException");
}
public void processTransactionTerminated(TransactionTerminatedEvent transactionTerminatedEvent) {
System.out.println("Transaction terminated event recieved");
}
public void processDialogTerminated(DialogTerminatedEvent dialogTerminatedEvent) {
System.out.println("Dialog terminated event recieved");
}
}