/**
* Dispatches the event received from a JAIN-SIP <tt>SipProvider</tt> to one of our "candidate
* recipient" listeners.
*
* @param event the event received for a <tt>SipProvider</tt>.
*/
public void processTimeout(TimeoutEvent event) {
try {
Transaction transaction;
if (event.isServerTransaction()) {
transaction = event.getServerTransaction();
} else {
transaction = event.getClientTransaction();
}
ProtocolProviderServiceSipImpl recipient = getServiceData(transaction);
if (recipient == null) {
logger.error(
"We received a timeout which wasn't "
+ "marked, please report this to "
+ "*****@*****.**");
} else {
recipient.processTimeout(event);
}
} catch (Throwable exc) {
// any exception thrown within our code should be caught here
// so that we could log it rather than interrupt stack activity with
// it.
this.logApplicationException(DialogTerminatedEvent.class, exc);
}
}
/**
* Populates a specific <tt>Request</tt> instance with the headers common to dialog-creating
* <tt>Request</tt>s and ones sent inside existing dialogs and specific to the general event
* package subscription functionality that this instance and a specific <tt>Subscription</tt>
* represent.
*
* @param req the <tt>Request</tt> instance to be populated with common headers and ones specific
* to the event package of a specific <tt>Subscription</tt>
* @param subscription the <tt>Subscription</tt> which is to be described in the specified
* <tt>Request</tt> i.e. its properties are to be used to populate the specified
* <tt>Request</tt>
* @param expires the subscription duration to be set into the Expires header of the specified
* SUBSCRIBE <tt>Request</tt>
* @throws OperationFailedException if we fail parsing or populating the subscription request.
*/
protected void populateSubscribeRequest(Request req, Subscription subscription, int expires)
throws OperationFailedException {
HeaderFactory headerFactory = protocolProvider.getHeaderFactory();
// Event
EventHeader evHeader;
try {
evHeader = headerFactory.createEventHeader(eventPackage);
String eventId = subscription.getEventId();
if (eventId != null) evHeader.setEventId(eventId);
} catch (ParseException e) {
// these two should never happen.
logger.error("An unexpected error occurred while" + "constructing the EventHeader", e);
throw new OperationFailedException(
"An unexpected error occurred while" + "constructing the EventHeader",
OperationFailedException.INTERNAL_ERROR,
e);
}
req.setHeader(evHeader);
// Accept
AcceptHeader accept;
try {
accept = headerFactory.createAcceptHeader("application", contentSubType);
} catch (ParseException e) {
logger.error("wrong accept header", e);
throw new OperationFailedException(
"An unexpected error occurred while" + "constructing the AcceptHeader",
OperationFailedException.INTERNAL_ERROR,
e);
}
req.setHeader(accept);
// Expires
ExpiresHeader expHeader;
try {
expHeader = headerFactory.createExpiresHeader(expires);
} catch (InvalidArgumentException e) {
logger.error("Invalid expires value: " + expires, e);
throw new OperationFailedException(
"An unexpected error occurred while" + "constructing the ExpiresHeader",
OperationFailedException.INTERNAL_ERROR,
e);
}
req.setHeader(expHeader);
}
/**
* Logs the specified message and details.
*
* @param message the message to log
* @param from the message sender
* @param to the message addressee
* @param status message status
* @param sender determines whether we are the origin of this message.
* @param time the date this message was received at.
*/
public void logMessage(
SIPMessage message, String from, String to, String status, boolean sender, long time) {
try {
logPacket(message, sender);
} catch (Throwable e) {
logger.error("Error logging packet", e);
}
}
/**
* Sends the <tt>message</tt> to the destination indicated by the <tt>to</tt> contact.
*
* @param to the <tt>Contact</tt> to send <tt>message</tt> to
* @param message the <tt>Message</tt> to send.
* @throws java.lang.IllegalStateException if the underlying stack is not registered and
* initialized.
* @throws java.lang.IllegalArgumentException if <tt>to</tt> is not an instance of ContactImpl.
*/
public void sendInstantMessage(Contact to, Message message)
throws IllegalStateException, IllegalArgumentException {
if (!(to instanceof ContactSipImpl))
throw new IllegalArgumentException("The specified contact is not a Sip contact." + to);
assertConnected();
// offline message
if (to.getPresenceStatus().equals(sipStatusEnum.getStatus(SipStatusEnum.OFFLINE))
&& !offlineMessageSupported) {
if (logger.isDebugEnabled()) logger.debug("trying to send a message to an offline contact");
fireMessageDeliveryFailed(
message, to, MessageDeliveryFailedEvent.OFFLINE_MESSAGES_NOT_SUPPORTED);
return;
}
// create the message
Request mes;
try {
mes = createMessageRequest(to, message);
} catch (OperationFailedException ex) {
logger.error("Failed to create the message.", ex);
fireMessageDeliveryFailed(message, to, MessageDeliveryFailedEvent.INTERNAL_ERROR);
return;
}
try {
sendMessageRequest(mes, to, message);
} catch (TransactionUnavailableException ex) {
logger.error(
"Failed to create messageTransaction.\n"
+ "This is most probably a network connection error.",
ex);
fireMessageDeliveryFailed(message, to, MessageDeliveryFailedEvent.NETWORK_FAILURE);
return;
} catch (SipException ex) {
logger.error("Failed to send the message.", ex);
fireMessageDeliveryFailed(message, to, MessageDeliveryFailedEvent.INTERNAL_ERROR);
return;
}
}
/**
* Put the stack in a state where it can receive data on three UDP/TCP ports (2 for clear
* communication, 1 for TLS). That is to say create the related JAIN-SIP <tt>ListeningPoint</tt>s
* and <tt>SipProvider</tt>s.
*
* @throws OperationFailedException if creating one of the underlying <tt>SipProvider</tt>s fails
* for whatever reason.
*/
private void startListening() throws OperationFailedException {
try {
int bindRetriesValue = getBindRetriesValue();
this.createProvider(this.getPreferredClearPort(), bindRetriesValue, false);
this.createProvider(this.getPreferredSecurePort(), bindRetriesValue, true);
this.stack.start();
if (logger.isTraceEnabled()) logger.trace("started listening");
} catch (Exception ex) {
logger.error(
"An unexpected error happened while creating the" + "SipProviders and ListeningPoints.");
throw new OperationFailedException(
"An unexpected error hapenned" + "while initializing the SIP stack",
OperationFailedException.INTERNAL_ERROR,
ex);
}
}
/**
* Dispatches the event received from a JAIN-SIP <tt>SipProvider</tt> to one of our "candidate
* recipient" listeners.
*
* @param event the event received for a <tt>SipProvider</tt>.
*/
public void processResponse(ResponseEvent event) {
try {
// we don't have to accept the transaction since we
// created the request
ClientTransaction transaction = event.getClientTransaction();
if (logger.isTraceEnabled())
logger.trace(
"received response: "
+ event.getResponse().getStatusCode()
+ " "
+ event.getResponse().getReasonPhrase());
if (transaction == null) {
logger.warn("Transaction is null, probably already expired!");
return;
}
ProtocolProviderServiceSipImpl service = getServiceData(transaction);
if (service != null) {
// Mark the dialog for the dispatching of later in-dialog
// responses. If there is no dialog then the initial request
// sure is marked otherwise we won't have found the service with
// getServiceData(). The request has to be marked in case we
// receive one more response in an out-of-dialog transaction.
if (event.getDialog() != null) {
SipApplicationData.setApplicationData(
event.getDialog(), SipApplicationData.KEY_SERVICE, service);
}
service.processResponse(event);
} else {
logger.error(
"We received a response which "
+ "wasn't marked, please report this to "
+ "*****@*****.**");
}
} catch (Throwable exc) {
// any exception thrown within our code should be caught here
// so that we could log it rather than interrupt stack activity with
// it.
this.logApplicationException(DialogTerminatedEvent.class, exc);
}
}
/**
* Dispatches the event received from a JAIN-SIP <tt>SipProvider</tt> to one of our "candidate
* recipient" listeners.
*
* @param event the event received for a <tt>SipProvider</tt>.
*/
public void processDialogTerminated(DialogTerminatedEvent event) {
try {
ProtocolProviderServiceSipImpl recipient =
(ProtocolProviderServiceSipImpl)
SipApplicationData.getApplicationData(
event.getDialog(), SipApplicationData.KEY_SERVICE);
if (recipient == null) {
logger.error(
"Dialog wasn't marked, please report this to " + "*****@*****.**");
} else {
if (logger.isTraceEnabled()) logger.trace("service was found with dialog data");
recipient.processDialogTerminated(event);
}
} catch (Throwable exc) {
// any exception thrown within our code should be caught here
// so that we could log it rather than interrupt stack activity with
// it.
this.logApplicationException(DialogTerminatedEvent.class, exc);
}
}
/**
* Creates a new SUBSCRIBE request in the form of a <tt>ClientTransaction</tt> with the parameters
* of a specific <tt>Subscription</tt>.
*
* @param subscription the <tt>Subscription</tt> to be described in a SUBSCRIBE request
* @param dialog the <tt>Dialog</tt> with which this request should be associated
* @param expires the subscription duration of the SUBSCRIBE request to be created
* @return a new <tt>ClientTransaction</tt> initialized with a new SUBSCRIBE request which matches
* the parameters of the specified <tt>Subscription</tt> and is associated with the specified
* <tt>Dialog</tt>
* @throws OperationFailedException if the message could not be generated
*/
private ClientTransaction createSubscription(
Subscription subscription, Dialog dialog, int expires) throws OperationFailedException {
Request req = messageFactory.createRequest(dialog, Request.SUBSCRIBE);
// Address
Address toAddress = dialog.getRemoteTarget();
// no Contact field
if (toAddress == null) toAddress = dialog.getRemoteParty();
// MaxForwards
MaxForwardsHeader maxForwards = protocolProvider.getMaxForwardsHeader();
req.setHeader(maxForwards);
/*
* Create the transaction and then add the via header as recommended by
* the jain-sip documentation at
* http://snad.ncsl.nist.gov/proj/iptel/jain-sip-1.2/javadoc
* /javax/sip/Dialog.html#createRequest(String).
*/
ClientTransaction transac = null;
try {
transac = protocolProvider.getDefaultJainSipProvider().getNewClientTransaction(req);
} catch (TransactionUnavailableException ex) {
logger.error(
"Failed to create subscriptionTransaction.\n"
+ "This is most probably a network connection error.",
ex);
throw new OperationFailedException(
"Failed to create the subscription transaction",
OperationFailedException.NETWORK_FAILURE);
}
populateSubscribeRequest(req, subscription, expires);
return transac;
}
/**
* Dispatches the event received from a JAIN-SIP <tt>SipProvider</tt> to one of our "candidate
* recipient" listeners.
*
* @param event the event received for a <tt>SipProvider</tt>.
*/
public void processRequest(RequestEvent event) {
try {
Request request = event.getRequest();
if (logger.isTraceEnabled()) logger.trace("received request: " + request.getMethod());
/*
* Create the transaction if it doesn't exist yet. If it is a
* dialog-creating request, the dialog will also be automatically
* created by the stack.
*/
if (event.getServerTransaction() == null) {
try {
// apply some hacks if needed on incoming request
// to be compliant with some servers/clients
// if needed stop further processing.
if (applyNonConformanceHacks(event)) return;
SipProvider source = (SipProvider) event.getSource();
ServerTransaction transaction = source.getNewServerTransaction(request);
/*
* Update the event, otherwise getServerTransaction() and
* getDialog() will still return their previous value.
*/
event = new RequestEvent(source, transaction, transaction.getDialog(), request);
} catch (SipException ex) {
logger.error(
"couldn't create transaction, please report "
+ "this to [email protected]",
ex);
}
}
ProtocolProviderServiceSipImpl service = getServiceData(event.getServerTransaction());
if (service != null) {
service.processRequest(event);
} else {
service = findTargetFor(request);
if (service == null) {
logger.error("couldn't find a ProtocolProviderServiceSipImpl " + "to dispatch to");
if (event.getServerTransaction() != null) event.getServerTransaction().terminate();
} else {
/*
* Mark the dialog for the dispatching of later in-dialog
* requests. If there is no dialog, we need to mark the
* request to dispatch a possible timeout when sending the
* response.
*/
Object container = event.getDialog();
if (container == null) container = request;
SipApplicationData.setApplicationData(container, SipApplicationData.KEY_SERVICE, service);
service.processRequest(event);
}
}
} catch (Throwable exc) {
/*
* Any exception thrown within our code should be caught here so
* that we could log it rather than interrupt stack activity with
* it.
*/
this.logApplicationException(DialogTerminatedEvent.class, exc);
// Unfortunately, death can hardly be ignored.
if (exc instanceof ThreadDeath) throw (ThreadDeath) exc;
}
}
/**
* Attach JAIN-SIP <tt>SipProvider</tt> and <tt>ListeningPoint</tt> to the stack either for clear
* communications or TLS. Clear UDP and TCP <tt>ListeningPoint</tt>s are not handled separately as
* the former is a fallback for the latter (depending on the size of the data transmitted). Both
* <tt>ListeningPoint</tt>s must be bound to the same address and port in order for the related
* <tt>SipProvider</tt> to be created. If a UDP or TCP <tt>ListeningPoint</tt> cannot bind, retry
* for both on another port.
*
* @param preferredPort which port to try first to bind.
* @param retries how many times should we try to find a free port to bind
* @param secure whether to create the TLS SipProvider. or the clear UDP/TCP one.
* @throws TransportNotSupportedException in case we try to create a provider for a transport not
* currently supported by jain-sip
* @throws InvalidArgumentException if we try binding to an illegal port (which we won't)
* @throws ObjectInUseException if another <tt>SipProvider</tt> is already associated with this
* <tt>ListeningPoint</tt>.
* @throws TransportAlreadySupportedException if there is already a ListeningPoint associated to
* this <tt>SipProvider</tt> with the same transport of the <tt>ListeningPoint</tt>.
* @throws TooManyListenersException if we try to add a new <tt>SipListener</tt> with a
* <tt>SipProvider</tt> when one was already registered.
*/
private void createProvider(int preferredPort, int retries, boolean secure)
throws TransportNotSupportedException, InvalidArgumentException, ObjectInUseException,
TransportAlreadySupportedException, TooManyListenersException {
String context = (secure ? "TLS: " : "clear UDP/TCP: ");
if (retries < 0) {
// very unlikely to happen with the default 50 retries
logger.error(context + "couldn't find free ports to listen on.");
return;
}
ListeningPoint tlsLP = null;
ListeningPoint udpLP = null;
ListeningPoint tcpLP = null;
try {
if (secure) {
tlsLP =
this.stack.createListeningPoint(
NetworkUtils.IN_ADDR_ANY, preferredPort, ListeningPoint.TLS);
if (logger.isTraceEnabled()) logger.trace("TLS secure ListeningPoint has been created.");
this.secureJainSipProvider = this.stack.createSipProvider(tlsLP);
this.secureJainSipProvider.addSipListener(this);
} else {
udpLP =
this.stack.createListeningPoint(
NetworkUtils.IN_ADDR_ANY, preferredPort, ListeningPoint.UDP);
tcpLP =
this.stack.createListeningPoint(
NetworkUtils.IN_ADDR_ANY, preferredPort, ListeningPoint.TCP);
if (logger.isTraceEnabled())
logger.trace("UDP and TCP clear ListeningPoints have " + "been created.");
this.clearJainSipProvider = this.stack.createSipProvider(udpLP);
this.clearJainSipProvider.addListeningPoint(tcpLP);
this.clearJainSipProvider.addSipListener(this);
}
if (logger.isTraceEnabled()) logger.trace(context + "SipProvider has been created.");
} catch (InvalidArgumentException ex) {
// makes sure we didn't leave an open listener
// as both UDP and TCP listener have to bind to the same port
if (tlsLP != null) this.stack.deleteListeningPoint(tlsLP);
if (udpLP != null) this.stack.deleteListeningPoint(udpLP);
if (tcpLP != null) this.stack.deleteListeningPoint(tcpLP);
// FIXME: "Address already in use" is not working
// as ex.getMessage() displays in the locale language in SC
// (getMessage() is always supposed to be English though)
// this should be a temporary workaround
// if (ex.getMessage().indexOf("Address already in use") != -1)
// another software is probably using the port
if (ex.getCause() instanceof java.io.IOException) {
if (logger.isDebugEnabled())
logger.debug("Port " + preferredPort + " seems in use for either TCP or UDP.");
// tries again on a new random port
int currentlyTriedPort = NetworkUtils.getRandomPortNumber();
if (logger.isDebugEnabled()) logger.debug("Retrying bind on port " + currentlyTriedPort);
this.createProvider(currentlyTriedPort, retries - 1, secure);
} else throw ex;
}
}
/**
* Logs the specified message and details to the packet logging service if enabled.
*
* @param message the message to log
* @param sender determines whether we are the origin of this message.
*/
private void logPacket(SIPMessage message, boolean sender) {
try {
PacketLoggingService packetLogging = SipActivator.getPacketLogging();
if (packetLogging == null
|| !packetLogging.isLoggingEnabled(PacketLoggingService.ProtocolName.SIP)
/* Via not present in CRLF packet on TCP - causes NPE */
|| message.getTopmostVia() == null) return;
String transport = message.getTopmostVia().getTransport();
boolean isTransportUDP = transport.equalsIgnoreCase("UDP");
byte[] srcAddr;
int srcPort;
byte[] dstAddr;
int dstPort;
// if addresses are not set use empty byte array with length
// equals to the other address or just empty
// byte array with length 4 (ipv4 0.0.0.0)
if (sender) {
if (!isTransportUDP) {
InetSocketAddress localAddress =
getLocalAddressForDestination(
message.getRemoteAddress(),
message.getRemotePort(),
message.getLocalAddress(),
transport);
srcPort = localAddress.getPort();
srcAddr = localAddress.getAddress().getAddress();
} else {
srcPort = message.getLocalPort();
if (message.getLocalAddress() != null) srcAddr = message.getLocalAddress().getAddress();
else if (message.getRemoteAddress() != null)
srcAddr = new byte[message.getRemoteAddress().getAddress().length];
else srcAddr = new byte[4];
}
dstPort = message.getRemotePort();
if (message.getRemoteAddress() != null) dstAddr = message.getRemoteAddress().getAddress();
else dstAddr = new byte[srcAddr.length];
} else {
if (!isTransportUDP) {
InetSocketAddress dstAddress =
getLocalAddressForDestination(
message.getRemoteAddress(),
message.getRemotePort(),
message.getLocalAddress(),
transport);
dstPort = dstAddress.getPort();
dstAddr = dstAddress.getAddress().getAddress();
} else {
dstPort = message.getLocalPort();
if (message.getLocalAddress() != null) dstAddr = message.getLocalAddress().getAddress();
else if (message.getRemoteAddress() != null)
dstAddr = new byte[message.getRemoteAddress().getAddress().length];
else dstAddr = new byte[4];
}
srcPort = message.getRemotePort();
if (message.getRemoteAddress() != null) srcAddr = message.getRemoteAddress().getAddress();
else srcAddr = new byte[dstAddr.length];
}
byte[] msg = null;
if (message instanceof SIPRequest) {
SIPRequest req = (SIPRequest) message;
if (req.getMethod().equals(SIPRequest.MESSAGE)
&& message.getContentTypeHeader() != null
&& message.getContentTypeHeader().getContentType().equalsIgnoreCase("text")) {
int len = req.getContentLength().getContentLength();
if (len > 0) {
SIPRequest newReq = (SIPRequest) req.clone();
byte[] newContent = new byte[len];
Arrays.fill(newContent, (byte) '.');
newReq.setMessageContent(newContent);
msg = newReq.toString().getBytes("UTF-8");
}
}
}
if (msg == null) {
msg = message.toString().getBytes("UTF-8");
}
packetLogging.logPacket(
PacketLoggingService.ProtocolName.SIP,
srcAddr,
srcPort,
dstAddr,
dstPort,
isTransportUDP
? PacketLoggingService.TransportName.UDP
: PacketLoggingService.TransportName.TCP,
sender,
msg);
} catch (Throwable e) {
logger.error("Cannot obtain message body", e);
}
}
/**
* Logs an exception and an error message error message.
*
* @param message that message that we'd like to log.
* @param ex the exception that we'd like to log.
*/
public void logError(String message, Exception ex) {
logger.error("Error from the JAIN-SIP stack: " + message, ex);
}
/**
* Implements {@link MethodProcessor#processResponse(ResponseEvent)}. Handles only responses to
* SUBSCRIBE requests because they are the only requests concerning event package subscribers (and
* the only requests sent by them, for that matter) and if the processing of a given response
* requires event package-specific handling, delivers the response to the matching
* <tt>Subscription</tt> instance. Examples of such event package-specific handling include
* letting the respective <tt>Subscription</tt> handle the success or failure in the establishment
* of a subscription.
*
* @param responseEvent a <tt>ResponseEvent</tt> specifying the SIP <tt>Response</tt> to be
* processed
* @return <tt>true</tt> if the SIP <tt>Response</tt> specified by <tt>responseEvent</tt> was
* processed; otherwise, <tt>false</tt>
*/
@Override
public boolean processResponse(ResponseEvent responseEvent) {
Response response = responseEvent.getResponse();
CSeqHeader cseqHeader = (CSeqHeader) response.getHeader(CSeqHeader.NAME);
if (cseqHeader == null) {
logger.error("An incoming response did not contain a CSeq header");
return false;
}
if (!Request.SUBSCRIBE.equals(cseqHeader.getMethod())) return false;
ClientTransaction clientTransaction = responseEvent.getClientTransaction();
Request request = clientTransaction.getRequest();
/*
* Don't handle responses to requests not coming from this event
* package.
*/
if (request != null) {
EventHeader eventHeader = (EventHeader) request.getHeader(EventHeader.NAME);
if ((eventHeader == null) || !eventPackage.equalsIgnoreCase(eventHeader.getEventType()))
return false;
}
// Find the subscription.
CallIdHeader callIdHeader = (CallIdHeader) response.getHeader(CallIdHeader.NAME);
String callId = callIdHeader.getCallId();
Subscription subscription = getSubscription(callId);
// if it's the response to an unsubscribe message, we just ignore it
// whatever the response is however if we need to handle a
// challenge, we do it
ExpiresHeader expHeader = response.getExpires();
int statusCode = response.getStatusCode();
SipProvider sourceProvider = (SipProvider) responseEvent.getSource();
if (((expHeader != null) && (expHeader.getExpires() == 0))
|| (subscription == null)) // this handle the unsubscription
// case where we removed the contact
// from subscribedContacts
{
boolean processed = false;
if ((statusCode == Response.UNAUTHORIZED)
|| (statusCode == Response.PROXY_AUTHENTICATION_REQUIRED)) {
try {
processAuthenticationChallenge(clientTransaction, response, sourceProvider);
processed = true;
} catch (OperationFailedException e) {
logger.error("can't handle the challenge", e);
}
} else if ((statusCode != Response.OK) && (statusCode != Response.ACCEPTED)) processed = true;
// any other cases (200/202) will imply a NOTIFY, so we will
// handle the end of a subscription there
return processed;
}
if ((statusCode >= Response.OK) && (statusCode < Response.MULTIPLE_CHOICES)) {
// OK (200/202)
if ((statusCode == Response.OK) || (statusCode == Response.ACCEPTED)) {
if (expHeader == null) {
// not conform to rfc3265
logger.error("no Expires header in this response");
return false;
}
SubscriptionRefreshTask refreshTask = new SubscriptionRefreshTask(subscription);
subscription.setTimerTask(refreshTask);
int refreshDelay = expHeader.getExpires();
// try to keep a margin if the refresh delay allows it
if (refreshDelay >= (2 * refreshMargin)) refreshDelay -= refreshMargin;
timer.schedule(refreshTask, refreshDelay * 1000);
// do it to remember the dialog in case of a polling
// subscription (which means no call to finalizeSubscription)
subscription.setDialog(clientTransaction.getDialog());
subscription.processSuccessResponse(responseEvent, statusCode);
}
} else if ((statusCode >= Response.MULTIPLE_CHOICES) && (statusCode < Response.BAD_REQUEST)) {
if (logger.isInfoEnabled())
logger.info(
"Response to subscribe to "
+ subscription.getAddress()
+ ": "
+ response.getReasonPhrase());
} else if (statusCode >= Response.BAD_REQUEST) {
// if the response is a 423 response, just re-send the request
// with a valid expires value
if (statusCode == Response.INTERVAL_TOO_BRIEF) {
MinExpiresHeader min = (MinExpiresHeader) response.getHeader(MinExpiresHeader.NAME);
if (min == null) {
logger.error("no minimal expires value in this 423 " + "response");
return false;
}
ExpiresHeader exp = request.getExpires();
try {
exp.setExpires(min.getExpires());
} catch (InvalidArgumentException e) {
logger.error("can't set the new expires value", e);
return false;
}
ClientTransaction transac = null;
try {
transac = protocolProvider.getDefaultJainSipProvider().getNewClientTransaction(request);
} catch (TransactionUnavailableException e) {
logger.error("can't create the client transaction", e);
return false;
}
try {
transac.sendRequest();
} catch (SipException e) {
logger.error("can't send the new request", e);
return false;
}
return true;
// UNAUTHORIZED (401/407)
} else if ((statusCode == Response.UNAUTHORIZED)
|| (statusCode == Response.PROXY_AUTHENTICATION_REQUIRED)) {
try {
processAuthenticationChallenge(clientTransaction, response, sourceProvider);
} catch (OperationFailedException e) {
logger.error("can't handle the challenge", e);
removeSubscription(callId, subscription);
subscription.processFailureResponse(responseEvent, statusCode);
}
// 408 480 486 600 603 : non definitive reject
// others: definitive reject (or not implemented)
} else {
if (logger.isDebugEnabled()) logger.debug("error received from the network:\n" + response);
removeSubscription(callId, subscription);
subscription.processFailureResponse(responseEvent, statusCode);
}
}
return true;
}
/**
* Implements {@link MethodProcessor#processRequest(RequestEvent)}. Handles only NOTIFY requests
* because they are the only requests concerning event package subscribers and if the processing
* of a given request requires event package-specific handling, delivers the request to the
* matching Subscription instance. Examples of such event package-specific handling include
* handling the termination of an existing Subscription and processing the bodies of the NOTIFY
* requests for active Subscriptions.
*
* @param requestEvent a <tt>RequestEvent</tt> specifying the SIP <tt>Request</tt> to be processed
* @return <tt>true</tt> if the SIP <tt>Request</tt> specified by <tt>requestEvent</tt> was
* processed; otherwise, <tt>false</tt>
*/
@Override
public boolean processRequest(RequestEvent requestEvent) {
Request request = requestEvent.getRequest();
EventHeader eventHeader = (EventHeader) request.getHeader(EventHeader.NAME);
if ((eventHeader == null) || !eventPackage.equalsIgnoreCase(eventHeader.getEventType())) {
/*
* We are not concerned by this request, perhaps another listener
* is. So don't send a 489 / Bad event answer here.
*/
return false;
}
if (!Request.NOTIFY.equals(request.getMethod())) return false;
if (logger.isDebugEnabled()) logger.debug("notify received");
SubscriptionStateHeader sstateHeader =
(SubscriptionStateHeader) request.getHeader(SubscriptionStateHeader.NAME);
// notify must contain one (rfc3265)
if (sstateHeader == null) {
logger.error("no subscription state in this request");
return false;
}
String sstate = sstateHeader.getState();
ServerTransaction serverTransaction = getOrCreateServerTransaction(requestEvent);
// first handle the case of a contact still pending
// it's possible if the NOTIFY arrives before the OK
CallIdHeader callIdHeader = (CallIdHeader) request.getHeader(CallIdHeader.NAME);
String callId = callIdHeader.getCallId();
Subscription subscription = getSubscription(callId);
// see if the notify correspond to an existing subscription
if ((subscription == null) && !SubscriptionStateHeader.TERMINATED.equalsIgnoreCase(sstate)) {
if (logger.isDebugEnabled()) logger.debug("subscription not found for callId " + callId);
// send a 481 response (rfc3625)
Response response;
try {
response =
protocolProvider
.getMessageFactory()
.createResponse(Response.CALL_OR_TRANSACTION_DOES_NOT_EXIST, request);
} catch (ParseException e) {
logger.error("failed to create the 481 response", e);
return false;
}
try {
serverTransaction.sendResponse(response);
} catch (SipException e) {
logger.error("failed to send the response", e);
} catch (InvalidArgumentException e) {
// should not happen
logger.error("invalid argument provided while trying to send the response", e);
}
return true;
}
// if we don't understand the content
ContentTypeHeader ctheader = (ContentTypeHeader) request.getHeader(ContentTypeHeader.NAME);
if ((ctheader != null) && !ctheader.getContentSubType().equalsIgnoreCase(contentSubType)) {
// send a 415 response (rfc3261)
Response response;
try {
response =
protocolProvider
.getMessageFactory()
.createResponse(Response.UNSUPPORTED_MEDIA_TYPE, request);
} catch (ParseException e) {
logger.error("failed to create the OK response", e);
return false;
}
// we want PIDF
AcceptHeader acceptHeader;
try {
acceptHeader =
protocolProvider.getHeaderFactory().createAcceptHeader("application", contentSubType);
} catch (ParseException e) {
// should not happen
logger.error("failed to create the accept header", e);
return false;
}
response.setHeader(acceptHeader);
try {
serverTransaction.sendResponse(response);
} catch (SipException e) {
logger.error("failed to send the response", e);
} catch (InvalidArgumentException e) {
// should not happen
logger.error("invalid argument provided while trying" + " to send the response", e);
}
}
// if the presentity doesn't want of us anymore
if (SubscriptionStateHeader.TERMINATED.equalsIgnoreCase(sstate)) {
// if we requested this end of subscription, subscription == null
if (subscription != null) {
removeSubscription(callId, subscription);
subscription.processTerminatedRequest(requestEvent, sstateHeader.getReasonCode());
}
}
// send an OK response
Response response;
try {
response = protocolProvider.getMessageFactory().createResponse(Response.OK, request);
} catch (ParseException e) {
logger.error("failed to create the OK response", e);
return false;
}
try {
serverTransaction.sendResponse(response);
} catch (SipException e) {
logger.error("failed to send the response", e);
} catch (InvalidArgumentException e) {
// should not happen
logger.error("invalid argument provided while trying to send the response", e);
}
// transform the presence document in new presence status
if (subscription != null)
subscription.processActiveRequest(requestEvent, request.getRawContent());
return true;
}
/**
* Find the <tt>ProtocolProviderServiceSipImpl</tt> (one of our "candidate recipient" listeners)
* which this <tt>request</tt> should be dispatched to. The strategy is to look first at the
* request URI, and then at the To field to find a matching candidate for dispatching. Note that
* this method takes a <tt>Request</tt> as param, and not a <tt>ServerTransaction</tt>, because
* sometimes <tt>RequestEvent</tt>s have no associated <tt>ServerTransaction</tt>.
*
* @param request the <tt>Request</tt> to find a recipient for.
* @return a suitable <tt>ProtocolProviderServiceSipImpl</tt>.
*/
private ProtocolProviderServiceSipImpl findTargetFor(Request request) {
if (request == null) {
logger.error("request shouldn't be null.");
return null;
}
List<ProtocolProviderServiceSipImpl> currentListenersCopy =
new ArrayList<ProtocolProviderServiceSipImpl>(this.getSipListeners());
// Let's first narrow down candidate choice by comparing
// addresses and ports (no point in delivering to a provider with a
// non matching IP address since they will reject it anyway).
filterByAddress(currentListenersCopy, request);
if (currentListenersCopy.size() == 0) {
logger.error("no listeners");
return null;
}
URI requestURI = request.getRequestURI();
if (requestURI.isSipURI()) {
String requestUser = ((SipURI) requestURI).getUser();
List<ProtocolProviderServiceSipImpl> candidates =
new ArrayList<ProtocolProviderServiceSipImpl>();
// check if the Request-URI username is
// one of ours usernames
for (ProtocolProviderServiceSipImpl listener : currentListenersCopy) {
String ourUserID = listener.getAccountID().getUserID();
// logger.trace(ourUserID + " *** " + requestUser);
if (ourUserID.equals(requestUser)) {
if (logger.isTraceEnabled())
logger.trace("suitable candidate found: " + listener.getAccountID());
candidates.add(listener);
}
}
// the perfect match
// every other case is approximation
if (candidates.size() == 1) {
ProtocolProviderServiceSipImpl perfectMatch = candidates.get(0);
if (logger.isTraceEnabled())
logger.trace("Will dispatch to \"" + perfectMatch.getAccountID() + "\"");
return perfectMatch;
}
// more than one account match
if (candidates.size() > 1) {
// check if a custom param exists in the contact
// address (set for registrar accounts)
for (ProtocolProviderServiceSipImpl candidate : candidates) {
String hostValue =
((SipURI) requestURI).getParameter(SipStackSharing.CONTACT_ADDRESS_CUSTOM_PARAM_NAME);
if (hostValue == null) continue;
if (hostValue.equals(candidate.getContactAddressCustomParamValue())) {
if (logger.isTraceEnabled())
logger.trace(
"Will dispatch to \""
+ candidate.getAccountID()
+ "\" because "
+ "\" the custom param was set");
return candidate;
}
}
// Past this point, our guess is not reliable. We try to find
// the "least worst" match based on parameters like the To field
// check if the To header field host part
// matches any of our SIP hosts
for (ProtocolProviderServiceSipImpl candidate : candidates) {
URI fromURI = ((FromHeader) request.getHeader(FromHeader.NAME)).getAddress().getURI();
if (fromURI.isSipURI() == false) continue;
SipURI ourURI = (SipURI) candidate.getOurSipAddress((SipURI) fromURI).getURI();
String ourHost = ourURI.getHost();
URI toURI = ((ToHeader) request.getHeader(ToHeader.NAME)).getAddress().getURI();
if (toURI.isSipURI() == false) continue;
String toHost = ((SipURI) toURI).getHost();
// logger.trace(toHost + "***" + ourHost);
if (toHost.equals(ourHost)) {
if (logger.isTraceEnabled())
logger.trace(
"Will dispatch to \""
+ candidate.getAccountID()
+ "\" because "
+ "host in the To: is the same as in our AOR");
return candidate;
}
}
// fallback on the first candidate
ProtocolProviderServiceSipImpl target = candidates.iterator().next();
logger.info(
"Will randomly dispatch to \""
+ target.getAccountID()
+ "\" because there is ambiguity on the username from"
+ " the Request-URI");
if (logger.isTraceEnabled()) logger.trace("\n" + request);
return target;
}
// fallback on any account
ProtocolProviderServiceSipImpl target = currentListenersCopy.iterator().next();
if (logger.isDebugEnabled())
logger.debug(
"Will randomly dispatch to \""
+ target.getAccountID()
+ "\" because the username in the Request-URI "
+ "is unknown or empty");
if (logger.isTraceEnabled()) logger.trace("\n" + request);
return target;
} else {
logger.error("Request-URI is not a SIP URI, dropping");
}
return null;
}
/**
* Logs exceptions that have occurred in the application while processing events originating from
* the stack.
*
* @param eventClass the class of the jain-sip event that we were handling when the exception was
* thrown.
* @param exc the exception that we need to log.
*/
private void logApplicationException(Class<DialogTerminatedEvent> eventClass, Throwable exc) {
String message = "An error occurred while processing event of type: " + eventClass.getName();
logger.error(message, exc);
if (logger.isDebugEnabled()) logger.debug(message, exc);
}
/**
* Log an error message.
*
* @param message error message to log.
*/
public void logError(String message) {
logger.error("Error from the JAIN-SIP stack: " + message);
}
/**
* Construct a <tt>Request</tt> represent a new message.
*
* @param to the <tt>Contact</tt> to send <tt>message</tt> to
* @param message the <tt>Message</tt> to send.
* @return a Message Request destined to the contact
* @throws OperationFailedException if an error occurred during the creation of the request
*/
Request createMessageRequest(Contact to, Message message) throws OperationFailedException {
Address toAddress = null;
try {
toAddress = sipProvider.parseAddressString(to.getAddress());
} catch (ParseException exc) {
// Shouldn't happen
logger.error("An unexpected error occurred while" + "constructing the address", exc);
throw new OperationFailedException(
"An unexpected error occurred while" + "constructing the address",
OperationFailedException.INTERNAL_ERROR,
exc);
}
// Call ID
CallIdHeader callIdHeader = this.sipProvider.getDefaultJainSipProvider().getNewCallId();
// CSeq
CSeqHeader cSeqHeader = null;
try {
// protect seqN
synchronized (this) {
cSeqHeader = this.sipProvider.getHeaderFactory().createCSeqHeader(seqN++, Request.MESSAGE);
}
} catch (InvalidArgumentException ex) {
// Shouldn't happen
logger.error("An unexpected error occurred while" + "constructing the CSeqHeadder", ex);
throw new OperationFailedException(
"An unexpected error occurred while" + "constructing the CSeqHeadder",
OperationFailedException.INTERNAL_ERROR,
ex);
} catch (ParseException exc) {
// shouldn't happen
logger.error("An unexpected error occurred while" + "constructing the CSeqHeadder", exc);
throw new OperationFailedException(
"An unexpected error occurred while" + "constructing the CSeqHeadder",
OperationFailedException.INTERNAL_ERROR,
exc);
}
// FromHeader and ToHeader
String localTag = SipMessageFactory.generateLocalTag();
FromHeader fromHeader = null;
ToHeader toHeader = null;
try {
// FromHeader
fromHeader =
this.sipProvider
.getHeaderFactory()
.createFromHeader(sipProvider.getOurSipAddress(toAddress), localTag);
// ToHeader
toHeader = this.sipProvider.getHeaderFactory().createToHeader(toAddress, null);
} catch (ParseException ex) {
// these two should never happen.
logger.error(
"An unexpected error occurred while" + "constructing the FromHeader or ToHeader", ex);
throw new OperationFailedException(
"An unexpected error occurred while" + "constructing the FromHeader or ToHeader",
OperationFailedException.INTERNAL_ERROR,
ex);
}
// ViaHeaders
ArrayList<ViaHeader> viaHeaders = this.sipProvider.getLocalViaHeaders(toAddress);
// MaxForwards
MaxForwardsHeader maxForwards = this.sipProvider.getMaxForwardsHeader();
// Content params
ContentTypeHeader contTypeHeader;
ContentLengthHeader contLengthHeader;
try {
contTypeHeader =
this.sipProvider
.getHeaderFactory()
.createContentTypeHeader(getType(message), getSubType(message));
if (!DEFAULT_MIME_ENCODING.equalsIgnoreCase(message.getEncoding()))
contTypeHeader.setParameter("charset", message.getEncoding());
contLengthHeader =
this.sipProvider.getHeaderFactory().createContentLengthHeader(message.getSize());
} catch (ParseException ex) {
// these two should never happen.
logger.error("An unexpected error occurred while" + "constructing the content headers", ex);
throw new OperationFailedException(
"An unexpected error occurred while" + "constructing the content headers",
OperationFailedException.INTERNAL_ERROR,
ex);
} catch (InvalidArgumentException exc) {
// these two should never happen.
logger.error(
"An unexpected error occurred while" + "constructing the content length header", exc);
throw new OperationFailedException(
"An unexpected error occurred while" + "constructing the content length header",
OperationFailedException.INTERNAL_ERROR,
exc);
}
Request req;
try {
req =
this.sipProvider
.getMessageFactory()
.createRequest(
toHeader.getAddress().getURI(),
Request.MESSAGE,
callIdHeader,
cSeqHeader,
fromHeader,
toHeader,
viaHeaders,
maxForwards,
contTypeHeader,
message.getRawData());
} catch (ParseException ex) {
// shouldn't happen
logger.error("Failed to create message Request!", ex);
throw new OperationFailedException(
"Failed to create message Request!", OperationFailedException.INTERNAL_ERROR, ex);
}
req.addHeader(contLengthHeader);
return req;
}
/**
* Creates a new SUBSCRIBE request in the form of a <tt>ClientTransaction</tt> with the parameters
* of a specific <tt>Subscription</tt>.
*
* @param subscription the <tt>Subscription</tt> to be described in a SUBSCRIBE request
* @param expires the subscription duration of the SUBSCRIBE request to be created
* @return a new <tt>ClientTransaction</tt> initialized with a new SUBSCRIBE request which matches
* the parameters of the specified <tt>Subscription</tt>
* @throws OperationFailedException if the request could not be generated
*/
private ClientTransaction createSubscription(Subscription subscription, int expires)
throws OperationFailedException {
Address toAddress = subscription.getAddress();
HeaderFactory headerFactory = protocolProvider.getHeaderFactory();
// Call ID
CallIdHeader callIdHeader = protocolProvider.getDefaultJainSipProvider().getNewCallId();
// CSeq
CSeqHeader cSeqHeader;
try {
cSeqHeader = headerFactory.createCSeqHeader(1l, Request.SUBSCRIBE);
} catch (InvalidArgumentException ex) {
// Shouldn't happen
logger.error("An unexpected error occurred while" + "constructing the CSeqHeader", ex);
throw new OperationFailedException(
"An unexpected error occurred while" + "constructing the CSeqHeader",
OperationFailedException.INTERNAL_ERROR,
ex);
} catch (ParseException ex) {
// shouldn't happen
logger.error("An unexpected error occurred while" + "constructing the CSeqHeader", ex);
throw new OperationFailedException(
"An unexpected error occurred while" + "constructing the CSeqHeader",
OperationFailedException.INTERNAL_ERROR,
ex);
}
// FromHeader and ToHeader
String localTag = SipMessageFactory.generateLocalTag();
FromHeader fromHeader;
ToHeader toHeader;
try {
// FromHeader
fromHeader =
headerFactory.createFromHeader(protocolProvider.getOurSipAddress(toAddress), localTag);
// ToHeader
toHeader = headerFactory.createToHeader(toAddress, null);
} catch (ParseException ex) {
// these two should never happen.
logger.error(
"An unexpected error occurred while" + "constructing the FromHeader or ToHeader", ex);
throw new OperationFailedException(
"An unexpected error occurred while" + "constructing the FromHeader or ToHeader",
OperationFailedException.INTERNAL_ERROR,
ex);
}
// ViaHeaders
ArrayList<ViaHeader> viaHeaders = protocolProvider.getLocalViaHeaders(toAddress);
// MaxForwards
MaxForwardsHeader maxForwards = protocolProvider.getMaxForwardsHeader();
Request req;
try {
req =
protocolProvider
.getMessageFactory()
.createRequest(
toHeader.getAddress().getURI(),
Request.SUBSCRIBE,
callIdHeader,
cSeqHeader,
fromHeader,
toHeader,
viaHeaders,
maxForwards);
} catch (ParseException ex) {
// shouldn't happen
logger.error("Failed to create message Request!", ex);
throw new OperationFailedException(
"Failed to create message Request!", OperationFailedException.INTERNAL_ERROR, ex);
}
populateSubscribeRequest(req, subscription, expires);
// Transaction
ClientTransaction subscribeTransaction;
try {
subscribeTransaction =
protocolProvider.getDefaultJainSipProvider().getNewClientTransaction(req);
} catch (TransactionUnavailableException ex) {
logger.error(
"Failed to create subscribe transaction.\n"
+ "This is most probably a network connection error.",
ex);
throw new OperationFailedException(
"Failed to create the subscription transaction",
OperationFailedException.NETWORK_FAILURE);
}
return subscribeTransaction;
}
