package examples.tls;
import gov.nist.javax.sip.TransactionExt;
import javax.sip.*;
import javax.sip.address.*;
import javax.sip.header.*;
import javax.sip.message.*;
import java.security.cert.Certificate;
import java.util.*;
/**
* This class is a UAC template. Shootist is the guy that shoots and shootme
* is the guy that gets shot.
*
*@author Daniel Martinez
*/
public class Shootme 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 = 5071;
protected ServerTransaction inviteTid;
Dialog dialog;
class ApplicationData {
protected int ackCount;
}
protected static final String usageString =
"java "
+ "examples.shootistTLS.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);
}
}
/** Process the ACK request. Send the bye and complete the call flow.
*/
public void processAck(
RequestEvent requestEvent,
ServerTransaction serverTransaction) {
SipProvider sipProvider = (SipProvider) requestEvent.getSource();
try {
System.out.println("shootme: got an ACK "
+ requestEvent.getRequest());
int ackCount =
((ApplicationData ) dialog.getApplicationData()).ackCount;
if (ackCount == 1) {
dialog = inviteTid.getDialog();
Request byeRequest = dialog.createRequest(Request.BYE);
ClientTransaction tr =
sipProvider.getNewClientTransaction(byeRequest);
System.out.println("shootme: got an ACK -- sending bye! ");
dialog.sendRequest(tr);
System.out.println("Dialog State = " + dialog.getState());
} else ((ApplicationData) dialog.getApplicationData()).ackCount ++;
} catch (Exception ex) {
ex.printStackTrace();
System.exit(0);
}
}
/** Process the invite request.
*/
public void processInvite(
RequestEvent requestEvent,
ServerTransaction serverTransaction) {
SipProvider sipProvider = (SipProvider) requestEvent.getSource();
Request request = requestEvent.getRequest();
System.out.println("Got an INVITE " + request);
try {
System.out.println("shootme: got an Invite sending OK");
//System.out.println("shootme: " + request);
Response response = messageFactory.createResponse(180, request);
ToHeader toHeader = (ToHeader) response.getHeader(ToHeader.NAME);
toHeader.setTag("4321"); // Application is supposed to set.
Address address =
addressFactory.createAddress("Shootme <sip:" + myAddress+ ":" + myPort
+ ";transport=tls>" );
ContactHeader contactHeader =
headerFactory.createContactHeader(address);
response.addHeader(contactHeader);
ServerTransaction st = requestEvent.getServerTransaction();
if (st == null) {
st = sipProvider.getNewServerTransaction(request);
if (st.getDialog().getApplicationData() == null) {
st.getDialog().setApplicationData(new ApplicationData());
}
} else {
System.out.println("This is a RE INVITE ");
if (st.getDialog() != dialog) {
System.out.println("Whoopsa Daisy Dialog Mismatch");
System.exit(0);
}
}
// Thread.sleep(5000);
System.out.println("got a server tranasaction " + st);
byte[] content = request.getRawContent();
if (content != null) {
ContentTypeHeader contentTypeHeader =
headerFactory.createContentTypeHeader("application", "sdp");
System.out.println("response = " + response);
response.setContent(content, contentTypeHeader);
}
dialog = st.getDialog();
if (dialog != null) {
System.out.println("Dialog " + dialog);
System.out.println("Dialog state " + dialog.getState());
}
st.sendResponse(response);
TransactionExt stExt = ( TransactionExt)st ;
Certificate[] certs = stExt.getPeerCertificates();
System.out.println("Certs = " + certs);
for (Certificate cert: certs ) {
System.out.println("Cert = " + cert);
}
response = messageFactory.createResponse(200, request);
toHeader = (ToHeader) response.getHeader(ToHeader.NAME);
toHeader.setTag("4321"); // Application is supposed to set.
response.addHeader(contactHeader);
st.sendResponse(response);
this.inviteTid = st;
} catch (Exception ex) {
ex.printStackTrace();
System.exit(0);
}
}
/** 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, null, null);
serverTransactionId.sendResponse(response);
System.out.println("Dialog State is " + serverTransactionId.getDialog().getState());
} catch (Exception ex) {
ex.printStackTrace();
System.exit(0);
}
}
public void processResponse(ResponseEvent responseReceivedEvent) {
System.out.println("Got a response");
Response response = (Response) responseReceivedEvent.getResponse();
Transaction tid = responseReceivedEvent.getClientTransaction();
System.out.println(
"Response received with client transaction id "
+ tid
+ ":\n"
+ response);
try {
if (response.getStatusCode() == Response.OK
&& ((CSeqHeader) response.getHeader(CSeqHeader.NAME))
.getMethod()
.equals(
Request.INVITE)) {
if (tid != this.inviteTid) {
new Exception().printStackTrace();
System.exit(0);
}
Dialog dialog = tid.getDialog();
// Save the tags for the dialog here.
Request request = tid.getRequest();
dialog.sendAck(request);
}
Dialog dialog = tid.getDialog();
System.out.println("Dalog State = " + dialog.getState());
} 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");
// Guard against starvation.
properties.setProperty(
"gov.nist.javax.sip.READ_TIMEOUT", "1000");
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 lpTLS = sipStack.createListeningPoint("127.0.0.1", myPort, "tls");
Shootme listener = this;
SipProvider sipProvider = sipStack.createSipProvider(lpTLS);
System.out.println("tls provider " + sipProvider);
sipProvider.addSipListener(listener);
} catch (Exception ex) {
System.out.println(ex.getMessage());
ex.printStackTrace();
usage();
}
}
public static void main(String args[]) {
new Shootme().init();
}
public void processIOException(IOExceptionEvent exceptionEvent) {
System.out.println("IOException occured while retransmitting requests:" + exceptionEvent);
}
public void processTransactionTerminated(TransactionTerminatedEvent transactionTerminatedEvent) {
System.out.println("Transaction Terminated event: " + transactionTerminatedEvent );
}
public void processDialogTerminated(DialogTerminatedEvent dialogTerminatedEvent) {
System.out.println("Dialog Terminated event: " + dialogTerminatedEvent);
}
}