/**
* This class is the <tt>SipListener</tt> for all JAIN-SIP <tt>SipProvider</tt>s. It is in charge of
* dispatching the received messages to the suitable <tt>ProtocolProviderServiceSipImpl</tt>s
* registered with <tt>addSipListener</tt>. It also contains the JAIN-SIP pieces which are common
* between all <tt>ProtocolProviderServiceSipImpl</tt>s (namely 1 <tt>SipStack</tt>, 2
* <tt>SipProvider</tt>s, 3 <tt>ListeningPoint</tt>s).
*
* @author Emil Ivov
* @author Lubomir Marinov
* @author Alan Kelly
* @author Sebastien Mazy
*/
public class SipStackSharing implements SipListener, NetworkConfigurationChangeListener {
/**
* We set a custom parameter in the contact address for registrar accounts, so as to ease
* dispatching of incoming requests in case several accounts have the same username in their
* contact address, eg: sip:[email protected]:5060;transport=udp;registering_acc=example_com
*/
public static final String CONTACT_ADDRESS_CUSTOM_PARAM_NAME = "registering_acc";
/** Logger for this class. */
private static final Logger logger = Logger.getLogger(SipStackSharing.class);
/** Our SIP stack (provided by JAIN-SIP). */
private final SipStack stack;
/** The JAIN-SIP provider that we use for clear UDP/TCP. */
private SipProvider clearJainSipProvider = null;
/** The JAIN-SIP provider that we use for TLS. */
private SipProvider secureJainSipProvider = null;
/**
* The candidate recipients to choose from when dispatching messages received from one the
* JAIN-SIP <tt>SipProvider</tt>-s. for thread safety issues reasons, better iterate on a copy of
* that set using <tt>getSipListeners()</tt>.
*/
private final Set<ProtocolProviderServiceSipImpl> listeners =
new HashSet<ProtocolProviderServiceSipImpl>();
/** The property indicating the preferred UDP and TCP port to bind to for clear communications. */
private static final String PREFERRED_CLEAR_PORT_PROPERTY_NAME =
"net.java.sip.communicator.SIP_PREFERRED_CLEAR_PORT";
/** The property indicating the preferred TLS (TCP) port to bind to for secure communications. */
private static final String PREFERRED_SECURE_PORT_PROPERTY_NAME =
"net.java.sip.communicator.SIP_PREFERRED_SECURE_PORT";
/**
* Constructor for this class. Creates the JAIN-SIP stack.
*
* @throws OperationFailedException if creating the stack fails.
*/
SipStackSharing() throws OperationFailedException {
// init of the stack
try {
SipFactory sipFactory = SipFactory.getInstance();
sipFactory.setPathName("org.jitsi.gov.nist");
Properties sipStackProperties = new SipStackProperties();
// Create SipStack object
this.stack = sipFactory.createSipStack(sipStackProperties);
if (logger.isTraceEnabled()) logger.trace("Created stack: " + this.stack);
// set our custom address resolver managing SRV records
AddressResolverImpl addressResolver = new AddressResolverImpl();
((SIPTransactionStack) this.stack).setAddressResolver(addressResolver);
SipActivator.getNetworkAddressManagerService().addNetworkConfigurationChangeListener(this);
} catch (Exception ex) {
logger.fatal("Failed to get SIP Factory.", ex);
throw new OperationFailedException(
"Failed to get SIP Factory", OperationFailedException.INTERNAL_ERROR, ex);
}
}
/**
* Adds this <tt>listener</tt> as a candidate recipient for the dispatching of new messages
* received from the JAIN-SIP <tt>SipProvider</tt>s.
*
* @param listener a new possible target for the dispatching process.
* @throws OperationFailedException if creating one of the underlying <tt>SipProvider</tt>s fails
* for whatever reason.
*/
public void addSipListener(ProtocolProviderServiceSipImpl listener)
throws OperationFailedException {
synchronized (this.listeners) {
if (this.listeners.size() == 0) startListening();
this.listeners.add(listener);
if (logger.isTraceEnabled()) logger.trace(this.listeners.size() + " listeners now");
}
}
/**
* This <tt>listener</tt> will no longer be a candidate recipient for the dispatching of new
* messages received from the JAIN-SIP <tt>SipProvider</tt>s.
*
* @param listener possible target to remove for the dispatching process.
*/
public void removeSipListener(ProtocolProviderServiceSipImpl listener) {
synchronized (this.listeners) {
this.listeners.remove(listener);
int listenerCount = listeners.size();
if (logger.isTraceEnabled()) logger.trace(listenerCount + " listeners left");
if (listenerCount == 0) stopListening();
}
}
/**
* Returns a copy of the <tt>listeners</tt> (= candidate recipients) set.
*
* @return a copy of the <tt>listeners</tt> set.
*/
private Set<ProtocolProviderServiceSipImpl> getSipListeners() {
synchronized (this.listeners) {
return new HashSet<ProtocolProviderServiceSipImpl>(this.listeners);
}
}
/**
* Returns the JAIN-SIP <tt>ListeningPoint</tt> associated to the given transport string.
*
* @param transport a string like "UDP", "TCP" or "TLS".
* @return the LP associated to the given transport.
*/
@SuppressWarnings("unchecked") // jain-sip legacy code
public ListeningPoint getLP(String transport) {
ListeningPoint lp;
Iterator<ListeningPoint> it = this.stack.getListeningPoints();
while (it.hasNext()) {
lp = it.next();
// FIXME: JAIN-SIP stack is not consistent with case
// (reported upstream)
if (lp.getTransport().toLowerCase().equals(transport.toLowerCase())) return lp;
}
throw new IllegalArgumentException("Invalid transport: " + transport);
}
/**
* 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);
}
}
/**
* 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;
}
}
/**
* Put the JAIN-SIP stack in a state where it cannot receive any data and frees the network ports
* used. That is to say remove JAIN-SIP <tt>ListeningPoint</tt>s and <tt>SipProvider</tt>s.
*/
@SuppressWarnings("unchecked") // jain-sip legacy code
private void stopListening() {
try {
this.secureJainSipProvider.removeSipListener(this);
this.stack.deleteSipProvider(this.secureJainSipProvider);
this.secureJainSipProvider = null;
this.clearJainSipProvider.removeSipListener(this);
this.stack.deleteSipProvider(this.clearJainSipProvider);
this.clearJainSipProvider = null;
Iterator<ListeningPoint> it = this.stack.getListeningPoints();
Vector<ListeningPoint> lpointsToRemove = new Vector<ListeningPoint>();
while (it.hasNext()) {
lpointsToRemove.add(it.next());
}
it = lpointsToRemove.iterator();
while (it.hasNext()) {
this.stack.deleteListeningPoint(it.next());
}
this.stack.stop();
if (logger.isTraceEnabled()) logger.trace("stopped listening");
} catch (ObjectInUseException ex) {
logger.fatal("Failed to stop listening", ex);
}
}
/**
* Returns the JAIN-SIP <tt>SipProvider</tt> in charge of this <tt>transport</tt>.
*
* @param transport a <tt>String</tt> like "TCP", "UDP" or "TLS"
* @return the corresponding <tt>SipProvider</tt>
*/
public SipProvider getJainSipProvider(String transport) {
SipProvider sp = null;
if (transport.equalsIgnoreCase(ListeningPoint.UDP)
|| transport.equalsIgnoreCase(ListeningPoint.TCP)) sp = this.clearJainSipProvider;
else if (transport.equalsIgnoreCase(ListeningPoint.TLS)) sp = this.secureJainSipProvider;
if (sp == null) throw new IllegalArgumentException("invalid transport");
return sp;
}
/**
* Fetches the preferred UDP and TCP port for clear communications in the user preferences or
* search is default value set in settings or fallback on a default value.
*
* @return the preferred network port for clear communications.
*/
private int getPreferredClearPort() {
int preferredPort =
SipActivator.getConfigurationService().getInt(PREFERRED_CLEAR_PORT_PROPERTY_NAME, -1);
if (preferredPort <= 1) {
// check for default value
preferredPort =
SipActivator.getResources().getSettingsInt(PREFERRED_CLEAR_PORT_PROPERTY_NAME);
}
if (preferredPort <= 1) return ListeningPoint.PORT_5060;
else return preferredPort;
}
/**
* Fetches the preferred TLS (TCP) port for secure communications in the user preferences or
* search is default value set in settings or fallback on a default value.
*
* @return the preferred network port for secure communications.
*/
private int getPreferredSecurePort() {
int preferredPort =
SipActivator.getConfigurationService().getInt(PREFERRED_SECURE_PORT_PROPERTY_NAME, -1);
if (preferredPort <= 1) {
// check for default value
preferredPort =
SipActivator.getResources().getSettingsInt(PREFERRED_SECURE_PORT_PROPERTY_NAME);
}
if (preferredPort <= 1) return ListeningPoint.PORT_5061;
else return preferredPort;
}
/**
* Fetches the number of times to retry when the binding of a JAIN-SIP <tt>ListeningPoint</tt>
* fails. Looks in the user preferences or fallbacks on a default value.
*
* @return the number of times to retry a failed bind.
*/
private int getBindRetriesValue() {
return SipActivator.getConfigurationService()
.getInt(
ProtocolProviderService.BIND_RETRIES_PROPERTY_NAME,
ProtocolProviderService.BIND_RETRIES_DEFAULT_VALUE);
}
/**
* 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);
}
}
/**
* 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 processIOException(IOExceptionEvent event) {
try {
if (logger.isTraceEnabled()) logger.trace(event);
// impossible to dispatch, log here
if (logger.isDebugEnabled()) logger.debug("@todo implement processIOException()");
} 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 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;
}
}
/**
* 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 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);
}
}
/**
* 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 processTransactionTerminated(TransactionTerminatedEvent 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 transaction terminated which wasn't"
+ " marked, please report this to"
+ " [email protected]");
} else {
recipient.processTransactionTerminated(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);
}
}
/**
* 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;
}
/**
* Removes from the specified list of candidates providers connected to a registrar that does not
* match the IP address that we are receiving a request from.
*
* @param candidates the list of providers we've like to filter.
* @param request the request that we are currently dispatching
*/
private void filterByAddress(List<ProtocolProviderServiceSipImpl> candidates, Request request) {
Iterator<ProtocolProviderServiceSipImpl> iterPP = candidates.iterator();
while (iterPP.hasNext()) {
ProtocolProviderServiceSipImpl candidate = iterPP.next();
if (candidate.getRegistrarConnection() == null) {
// RegistrarLess connections are ok
continue;
}
if (!candidate.getRegistrarConnection().isRegistrarless()
&& !candidate.getRegistrarConnection().isRequestFromSameConnection(request)) {
iterPP.remove();
}
}
}
/**
* Retrieves and returns that ProtocolProviderService that this transaction belongs to, or
* <tt>null</tt> if we couldn't associate it with a provider based on neither the request nor the
* transaction itself.
*
* @param transaction the transaction that we'd like to determine a provider for.
* @return a reference to the <tt>ProtocolProviderServiceSipImpl</tt> that <tt>transaction</tt>
* was associated with or <tt>null</tt> if we couldn't determine which one it is.
*/
private ProtocolProviderServiceSipImpl getServiceData(Transaction transaction) {
ProtocolProviderServiceSipImpl service =
(ProtocolProviderServiceSipImpl)
SipApplicationData.getApplicationData(
transaction.getRequest(), SipApplicationData.KEY_SERVICE);
if (service != null) {
if (logger.isTraceEnabled()) logger.trace("service was found in request data");
return service;
}
service =
(ProtocolProviderServiceSipImpl)
SipApplicationData.getApplicationData(
transaction.getDialog(), SipApplicationData.KEY_SERVICE);
if (service != null) {
if (logger.isTraceEnabled()) logger.trace("service was found in dialog data");
}
return service;
}
/**
* 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);
}
/**
* Safely returns the transaction from the event if already exists. If not a new transaction is
* created.
*
* @param event the request event
* @return the server transaction
* @throws javax.sip.TransactionAlreadyExistsException if transaction exists
* @throws javax.sip.TransactionUnavailableException if unavailable
*/
public static ServerTransaction getOrCreateServerTransaction(RequestEvent event)
throws TransactionAlreadyExistsException, TransactionUnavailableException {
ServerTransaction serverTransaction = event.getServerTransaction();
if (serverTransaction == null) {
SipProvider jainSipProvider = (SipProvider) event.getSource();
serverTransaction = jainSipProvider.getNewServerTransaction(event.getRequest());
}
return serverTransaction;
}
/**
* Returns a local address to use with the specified TCP destination. The method forces the
* JAIN-SIP stack to create s and binds (if necessary) and return a socket connected to the
* specified destination address and port and then return its local address.
*
* @param dst the destination address that the socket would need to connect to.
* @param dstPort the port number that the connection would be established with.
* @param localAddress the address that we would like to bind on (null for the "any" address).
* @param transport the transport that will be used TCP ot TLS
* @return the SocketAddress that this handler would use when connecting to the specified
* destination address and port.
* @throws IOException if we fail binding the local socket
*/
public java.net.InetSocketAddress getLocalAddressForDestination(
java.net.InetAddress dst, int dstPort, java.net.InetAddress localAddress, String transport)
throws IOException {
if (ListeningPoint.TLS.equalsIgnoreCase(transport))
return (java.net.InetSocketAddress)
(((SipStackImpl) this.stack).getLocalAddressForTlsDst(dst, dstPort, localAddress));
else
return (java.net.InetSocketAddress)
(((SipStackImpl) this.stack).getLocalAddressForTcpDst(dst, dstPort, localAddress, 0));
}
/**
* Place to put some hacks if needed on incoming requests.
*
* @param event the incoming request event.
* @return status <code>true</code> if we don't need to process this message, just discard it and
* <code>false</code> otherwise.
*/
private boolean applyNonConformanceHacks(RequestEvent event) {
Request request = event.getRequest();
try {
/*
* Max-Forwards is required, yet there are UAs which do not
* place it. SipProvider#getNewServerTransaction(Request)
* will throw an exception in the case of a missing
* Max-Forwards header and this method will eventually just
* log it thus ignoring the whole event.
*/
if (request.getHeader(MaxForwardsHeader.NAME) == null) {
// it appears that some buggy providers do send requests
// with no Max-Forwards headers, as we are at application level
// and we know there will be no endless loops
// there is no problem of adding headers and process normally
// this messages
MaxForwardsHeader maxForwards =
SipFactory.getInstance().createHeaderFactory().createMaxForwardsHeader(70);
request.setHeader(maxForwards);
}
} catch (Throwable ex) {
logger.warn("Cannot apply incoming request modification!", ex);
}
try {
// using asterisk voice mail initial notify for messages
// is ok, but on the fly received messages their notify comes
// without subscription-state, so we add it in order to be able to
// process message.
if (request.getMethod().equals(Request.NOTIFY)
&& request.getHeader(EventHeader.NAME) != null
&& ((EventHeader) request.getHeader(EventHeader.NAME))
.getEventType()
.equals(OperationSetMessageWaitingSipImpl.EVENT_PACKAGE)
&& request.getHeader(SubscriptionStateHeader.NAME) == null) {
request.addHeader(
new HeaderFactoryImpl().createSubscriptionStateHeader(SubscriptionStateHeader.ACTIVE));
}
} catch (Throwable ex) {
logger.warn("Cannot apply incoming request modification!", ex);
}
try {
// receiving notify message without subscription state
// used for keep-alive pings, they have done their job
// and are no more need. Skip processing them to avoid
// filling logs with unneeded exceptions.
if (request.getMethod().equals(Request.NOTIFY)
&& request.getHeader(SubscriptionStateHeader.NAME) == null) {
return true;
}
} catch (Throwable ex) {
logger.warn("Cannot apply incoming request modification!", ex);
}
return false;
}
/** List of currently waiting timers that will monitor the protocol provider */
Map<String, TimerTask> resetListeningPointsTimers = new HashMap<String, TimerTask>();
/**
* Listens for network changes and if we have a down interface and we have a tcp/tls provider
* which is staying for 20 seconds in unregistering state, it cannot unregister cause its using
* the old address which is currently down, and we must recreate its listening points so it can
* further reconnect.
*
* @param event the change event.
*/
public void configurationChanged(ChangeEvent event) {
if (event.isInitial()) return;
if (event.getType() == ChangeEvent.ADDRESS_DOWN) {
for (final ProtocolProviderServiceSipImpl pp : listeners) {
if (pp.getRegistrarConnection().getTransport() != null
&& (pp.getRegistrarConnection().getTransport().equals(ListeningPoint.TCP)
|| pp.getRegistrarConnection().getTransport().equals(ListeningPoint.TLS))) {
ResetListeningPoint reseter;
synchronized (resetListeningPointsTimers) {
// we do this only once for transport
if (resetListeningPointsTimers.containsKey(pp.getRegistrarConnection().getTransport()))
continue;
reseter = new ResetListeningPoint(pp);
resetListeningPointsTimers.put(pp.getRegistrarConnection().getTransport(), reseter);
}
pp.addRegistrationStateChangeListener(reseter);
}
}
}
}
/**
* If a tcp(tls) provider stays unregistering for a long time after connection changed most
* probably it won't get registered after unregistering fails, cause underlying listening point
* are conncted to wrong interfaces. So we will replace them.
*/
private class ResetListeningPoint extends TimerTask implements RegistrationStateChangeListener {
/** The time we wait before checking is the provider still unregistering. */
private static final int TIME_FOR_PP_TO_UNREGISTER = 20000;
/** The protocol provider we are checking. */
private final ProtocolProviderServiceSipImpl protocolProvider;
/**
* Constructs this task.
*
* @param pp
*/
ResetListeningPoint(ProtocolProviderServiceSipImpl pp) {
this.protocolProvider = pp;
}
/**
* Notified when registration state changed for a provider.
*
* @param evt
*/
public void registrationStateChanged(RegistrationStateChangeEvent evt) {
if (evt.getNewState() == RegistrationState.UNREGISTERING) {
new Timer().schedule(this, TIME_FOR_PP_TO_UNREGISTER);
} else {
protocolProvider.removeRegistrationStateChangeListener(this);
resetListeningPointsTimers.remove(protocolProvider.getRegistrarConnection().getTransport());
}
}
/** The real task work, replace listening point. */
public void run() {
// if the provider is still unregistering it most probably won't
// successes until we re-init the LP
if (protocolProvider.getRegistrationState() == RegistrationState.UNREGISTERING) {
String transport = protocolProvider.getRegistrarConnection().getTransport();
ListeningPoint old = getLP(transport);
try {
stack.deleteListeningPoint(old);
} catch (Throwable t) {
logger.warn("Error replacing ListeningPoint for " + transport, t);
}
try {
ListeningPoint tcpLP =
stack.createListeningPoint(
NetworkUtils.IN_ADDR_ANY,
transport.equals(ListeningPoint.TCP)
? getPreferredClearPort()
: getPreferredSecurePort(),
transport);
clearJainSipProvider.addListeningPoint(tcpLP);
} catch (Throwable t) {
logger.warn(
"Error replacing ListeningPoint for "
+ protocolProvider.getRegistrarConnection().getTransport(),
t);
}
}
resetListeningPointsTimers.remove(protocolProvider.getRegistrarConnection().getTransport());
}
}
}
/**
* Checks the <tt>protocolProvider</tt>'s account properties for configured custom headers and add
* them to the outgoing requests. The header account properties are of form:
* ConfigHeader.N.Name=HeaderName ConfigHeader.N.Value=HeaderValue
* ConfigHeader.N.Method=SIP_MethodName (optional) Where N is the index of the header, multiple
* custom headers can be added. Name is the header name to use and Value is its value. The optional
* property is whether to use a specific request method to attach headers to or if missing we will
* attach it to all requests.
*
* @author Damian Minkov
*/
public class ConfigHeaders {
/** The logger for this class */
public static final Logger logger = Logger.getLogger(ConfigHeaders.class);
/** The account property holding all the custom pre-configured headers. */
private static final String ACC_PROPERTY_CONFIG_HEADER = "ConfigHeader";
/** The config property suffix for custom header name. */
private static final String ACC_PROPERTY_CONFIG_HEADER_NAME = "Name";
/** The config property suffix for custom header value. */
private static final String ACC_PROPERTY_CONFIG_HEADER_VALUE = "Value";
/** The config property suffix for custom header method. */
private static final String ACC_PROPERTY_CONFIG_HEADER_METHOD = "Method";
/**
* Attach any custom headers pre configured for the account. Added only to message Requests. The
* header account properties are of form: ConfigHeader.N.Name=HeaderName
* ConfigHeader.N.Value=HeaderValue ConfigHeader.N.Method=SIP_MethodName (optional) Where N is the
* index of the header, multiple custom headers can be added. Name is the header name to use and
* Value is its value. The optional property is whether to use a specific request method to attach
* headers to or if missing we will attach it to all requests.
*
* @param message the message that we'd like to attach custom headers to.
* @param protocolProvider the protocol provider to check for configured custom headers.
*/
static void attachConfigHeaders(
Message message, ProtocolProviderServiceSipImpl protocolProvider) {
if (message instanceof Response) return;
Request request = (Request) message;
Map<String, String> props = protocolProvider.getAccountID().getAccountProperties();
Map<String, Map<String, String>> headers = new HashMap<String, Map<String, String>>();
// parse the properties into the map where the index is the key
for (Map.Entry<String, String> entry : props.entrySet()) {
String pName = entry.getKey();
String prefStr = entry.getValue();
String name;
String ix;
if (!pName.startsWith(ACC_PROPERTY_CONFIG_HEADER) || prefStr == null) continue;
prefStr = prefStr.trim();
if (pName.contains(".")) {
pName = pName.replaceAll(ACC_PROPERTY_CONFIG_HEADER + ".", "");
name = pName.substring(pName.lastIndexOf('.') + 1).trim();
if (!pName.contains(".")) continue;
ix = pName.substring(0, pName.lastIndexOf('.')).trim();
} else continue;
Map<String, String> headerValues = headers.get(ix);
if (headerValues == null) {
headerValues = new HashMap<String, String>();
headers.put(ix, headerValues);
}
headerValues.put(name, prefStr);
}
// process the found custom headers
for (Map<String, String> headerValues : headers.values()) {
String method = headerValues.get(ACC_PROPERTY_CONFIG_HEADER_METHOD);
// if there is a method setting and is different from
// current request method skip this header
// if any of the required properties are missing skip (Name & Value)
if ((method != null && !request.getMethod().equalsIgnoreCase(method))
|| !headerValues.containsKey(ACC_PROPERTY_CONFIG_HEADER_NAME)
|| !headerValues.containsKey(ACC_PROPERTY_CONFIG_HEADER_VALUE)) continue;
try {
String name = headerValues.get(ACC_PROPERTY_CONFIG_HEADER_NAME);
String value = processParams(headerValues.get(ACC_PROPERTY_CONFIG_HEADER_VALUE), request);
Header h = request.getHeader(name);
// makes possible overriding already created headers which
// are not custom one
// RouteHeader is used by ProxyRouter/DefaultRouter and we
// cannot use it as custom header if we want to add it
if ((h != null && !(h instanceof CustomHeader)) || name.equals(SIPHeaderNames.ROUTE)) {
request.setHeader(protocolProvider.getHeaderFactory().createHeader(name, value));
} else request.addHeader(new CustomHeaderList(name, value));
} catch (Exception e) {
logger.error("Cannot create custom header", e);
}
}
}
/**
* Checks for certain params existence in the value, and replace them with real values obtained
* from <tt>request</tt>.
*
* @param value the value of the header param
* @param request the request we are processing
* @return the value with replaced params
*/
private static String processParams(String value, Request request) {
if (value.indexOf("${from.address}") != -1) {
FromHeader fromHeader = (FromHeader) request.getHeader(FromHeader.NAME);
if (fromHeader != null) {
value = value.replace("${from.address}", fromHeader.getAddress().getURI().toString());
}
}
if (value.indexOf("${from.userID}") != -1) {
FromHeader fromHeader = (FromHeader) request.getHeader(FromHeader.NAME);
if (fromHeader != null) {
URI fromURI = fromHeader.getAddress().getURI();
String fromAddr = fromURI.toString();
// strips sip: or sips:
if (fromURI.isSipURI()) {
fromAddr = fromAddr.replaceFirst(fromURI.getScheme() + ":", "");
}
// take the userID part
int index = fromAddr.indexOf('@');
if (index > -1) fromAddr = fromAddr.substring(0, index);
value = value.replace("${from.userID}", fromAddr);
}
}
if (value.indexOf("${to.address}") != -1) {
ToHeader toHeader = (ToHeader) request.getHeader(ToHeader.NAME);
if (toHeader != null) {
value = value.replace("${to.address}", toHeader.getAddress().getURI().toString());
}
}
if (value.indexOf("${to.userID}") != -1) {
ToHeader toHeader = (ToHeader) request.getHeader(ToHeader.NAME);
if (toHeader != null) {
URI toURI = toHeader.getAddress().getURI();
String toAddr = toURI.toString();
// strips sip: or sips:
if (toURI.isSipURI()) {
toAddr = toAddr.replaceFirst(toURI.getScheme() + ":", "");
}
// take the userID part
int index = toAddr.indexOf('@');
if (index > -1) toAddr = toAddr.substring(0, index);
value = value.replace("${to.userID}", toAddr);
}
}
return value;
}
}