/**
* 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;
}
/**
* 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;
}
/**
* 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);
}
/**
* Try to find a charset in a MESSAGE request for the text content. If no charset is defined,
* the default charset for text messages is returned.
*
* @param req the MESSAGE request in which to look for a charset
* @return defined charset in the request or DEFAULT_MIME_ENCODING if no charset is specified
*/
private String getCharset(Request req) {
String charset = null;
Header contentTypeHeader = req.getHeader(ContentTypeHeader.NAME);
if (contentTypeHeader instanceof ContentTypeHeader)
charset = ((ContentTypeHeader) contentTypeHeader).getParameter("charset");
if (charset == null) charset = DEFAULT_MIME_ENCODING;
return charset;
}
/**
* 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;
}
/**
* Sends <tt>messageRequest</tt> to the specified destination and logs <tt>messageContent</tt> for
* later use.
*
* @param messageRequest the <tt>SipRequest</tt> that we are about to send.
* @param to the Contact that we are sending <tt>messageRequest</tt> to.
* @param messageContent the SC <tt>Message</tt> that was used to create the <tt>Request</tt> .
* @throws TransactionUnavailableException if we fail creating the transaction required to send
* <tt>messageRequest</tt>.
* @throws SipException if we fail sending <tt>messageRequest</tt>.
*/
void sendMessageRequest(Request messageRequest, Contact to, Message messageContent)
throws TransactionUnavailableException, SipException {
// Transaction
ClientTransaction messageTransaction;
SipProvider jainSipProvider = this.sipProvider.getDefaultJainSipProvider();
messageTransaction = jainSipProvider.getNewClientTransaction(messageRequest);
// send the message
messageTransaction.sendRequest();
// we register the reference to this message to retrieve it when
// we'll receive the response message
String key = ((CallIdHeader) messageRequest.getHeader(CallIdHeader.NAME)).getCallId();
this.sentMsg.put(key, messageContent);
}
@Override
public void run() {
try {
logger.logEntry();
// From
FromHeader fromHeader = null;
try {
// this keep alive task only makes sense in case we have
// a registrar so we deliberately use our AOR and do not
// use the getOurSipAddress() method.
fromHeader =
provider
.getHeaderFactory()
.createFromHeader(
provider.getRegistrarConnection().getAddressOfRecord(),
SipMessageFactory.generateLocalTag());
} catch (ParseException ex) {
// this should never happen so let's just log and bail.
logger.error("Failed to generate a from header for " + "our register request.", ex);
return;
}
// Call ID Header
CallIdHeader callIdHeader = provider.getDefaultJainSipProvider().getNewCallId();
// CSeq Header
CSeqHeader cSeqHeader = null;
try {
cSeqHeader =
provider.getHeaderFactory().createCSeqHeader(getNextCSeqValue(), Request.OPTIONS);
} catch (ParseException ex) {
// Should never happen
logger.error("Corrupt Sip Stack", ex);
return;
} catch (InvalidArgumentException ex) {
// Should never happen
logger.error("The application is corrupt", ex);
return;
}
// To Header
ToHeader toHeader = null;
try {
// this request isn't really going anywhere so we put our
// own address in the To Header.
toHeader = provider.getHeaderFactory().createToHeader(fromHeader.getAddress(), null);
} catch (ParseException ex) {
logger.error("Could not create a To header for address:" + fromHeader.getAddress(), ex);
return;
}
// MaxForwardsHeader
MaxForwardsHeader maxForwardsHeader = provider.getMaxForwardsHeader();
// Request
Request request = null;
try {
// create a host-only uri for the request uri header.
String domain = ((SipURI) toHeader.getAddress().getURI()).getHost();
// request URI
SipURI requestURI = provider.getAddressFactory().createSipURI(null, domain);
// Via Headers
ArrayList<ViaHeader> viaHeaders = provider.getLocalViaHeaders(requestURI);
request =
provider
.getMessageFactory()
.createRequest(
requestURI,
Request.OPTIONS,
callIdHeader,
cSeqHeader,
fromHeader,
toHeader,
viaHeaders,
maxForwardsHeader);
if (logger.isDebugEnabled()) logger.debug("Created OPTIONS request " + request);
} catch (ParseException ex) {
logger.error("Could not create an OPTIONS request!", ex);
return;
}
Iterator<String> supportedMethods = provider.getSupportedMethods().iterator();
// add to the allows header all methods that we support
while (supportedMethods.hasNext()) {
String method = supportedMethods.next();
// don't support REGISTERs
if (method.equals(Request.REGISTER)) continue;
request.addHeader(provider.getHeaderFactory().createAllowHeader(method));
}
Iterator<String> events = provider.getKnownEventsList().iterator();
synchronized (provider.getKnownEventsList()) {
while (events.hasNext()) {
String event = events.next();
request.addHeader(provider.getHeaderFactory().createAllowEventsHeader(event));
}
}
// Transaction
ClientTransaction optionsTrans = null;
try {
optionsTrans = provider.getDefaultJainSipProvider().getNewClientTransaction(request);
} catch (TransactionUnavailableException ex) {
logger.error("Could not create options transaction!\n", ex);
return;
}
try {
optionsTrans.sendRequest();
if (logger.isDebugEnabled()) logger.debug("sent request= " + request);
} catch (SipException ex) {
logger.error("Could not send out the options request!", ex);
if (ex.getCause() instanceof IOException) {
// IOException problem with network
disconnect();
}
return;
}
} catch (Exception ex) {
logger.error("Cannot send OPTIONS keep alive", ex);
}
}
/**
* Process a response from a distant contact.
*
* @param responseEvent the <tt>ResponseEvent</tt> containing the newly received SIP response.
* @return <tt>true</tt> if the specified event has been handled by this processor and shouldn't
* be offered to other processors registered for the same method; <tt>false</tt>, otherwise
*/
@Override
public boolean processResponse(ResponseEvent responseEvent) {
synchronized (messageProcessors) {
for (SipMessageProcessor listener : messageProcessors)
if (!listener.processResponse(responseEvent, sentMsg)) return true;
}
Request req = responseEvent.getClientTransaction().getRequest();
int status = responseEvent.getResponse().getStatusCode();
// content of the response
String content = null;
try {
content = new String(req.getRawContent(), getCharset(req));
} catch (UnsupportedEncodingException exc) {
if (logger.isDebugEnabled()) logger.debug("failed to convert the message charset", exc);
content = new String(req.getRawContent());
}
// to who did we send the original message ?
ToHeader toHeader = (ToHeader) req.getHeader(ToHeader.NAME);
if (toHeader == null) {
// should never happen
logger.error("send a request without a to header");
return false;
}
Contact to = opSetPersPresence.resolveContactID(toHeader.getAddress().getURI().toString());
if (to == null) {
logger.error(
"Error received a response from an unknown contact : "
+ toHeader.getAddress().getURI().toString()
+ " : "
+ responseEvent.getResponse().getStatusCode()
+ " "
+ responseEvent.getResponse().getReasonPhrase());
// error for delivering the message
fireMessageDeliveryFailed(
// we don't know what message it concerns
createMessage(content), to, MessageDeliveryFailedEvent.INTERNAL_ERROR);
return false;
}
// we retrieve the original message
String key = ((CallIdHeader) req.getHeader(CallIdHeader.NAME)).getCallId();
Message newMessage = sentMsg.get(key);
if (newMessage == null) {
// should never happen
logger.error("Couldn't find the message sent");
// error for delivering the message
fireMessageDeliveryFailed(
// we don't know what message it is
createMessage(content), to, MessageDeliveryFailedEvent.INTERNAL_ERROR);
return true;
}
// status 401/407 = proxy authentification
if (status >= 400 && status != 401 && status != 407) {
if (logger.isInfoEnabled())
logger.info(
responseEvent.getResponse().getStatusCode()
+ " "
+ responseEvent.getResponse().getReasonPhrase());
// error for delivering the message
MessageDeliveryFailedEvent evt =
new MessageDeliveryFailedEvent(
newMessage,
to,
MessageDeliveryFailedEvent.NETWORK_FAILURE,
System.currentTimeMillis(),
responseEvent.getResponse().getStatusCode()
+ " "
+ responseEvent.getResponse().getReasonPhrase());
fireMessageEvent(evt);
sentMsg.remove(key);
} else if (status == 401 || status == 407) {
// proxy ask for authentification
if (logger.isDebugEnabled())
logger.debug(
"proxy asks authentication : "
+ responseEvent.getResponse().getStatusCode()
+ " "
+ responseEvent.getResponse().getReasonPhrase());
ClientTransaction clientTransaction = responseEvent.getClientTransaction();
SipProvider sourceProvider = (SipProvider) responseEvent.getSource();
try {
processAuthenticationChallenge(
clientTransaction, responseEvent.getResponse(), sourceProvider);
} catch (OperationFailedException ex) {
logger.error("can't solve the challenge", ex);
// error for delivering the message
MessageDeliveryFailedEvent evt =
new MessageDeliveryFailedEvent(
newMessage,
to,
MessageDeliveryFailedEvent.NETWORK_FAILURE,
System.currentTimeMillis(),
ex.getMessage());
fireMessageEvent(evt);
sentMsg.remove(key);
}
} else if (status >= 200) {
if (logger.isDebugEnabled())
logger.debug(
"Ack received from the network : "
+ responseEvent.getResponse().getStatusCode()
+ " "
+ responseEvent.getResponse().getReasonPhrase());
// we delivered the message
MessageDeliveredEvent msgDeliveredEvt =
new MessageDeliveredEvent(newMessage, to, System.currentTimeMillis());
fireMessageEvent(msgDeliveredEvt);
// we don't need this message anymore
sentMsg.remove(key);
}
return true;
}
/**
* Process a request from a distant contact
*
* @param requestEvent the <tt>RequestEvent</tt> containing the newly received request.
* @return <tt>true</tt> if the specified event has been handled by this processor and shouldn't
* be offered to other processors registered for the same method; <tt>false</tt>, otherwise
*/
@Override
public boolean processRequest(RequestEvent requestEvent) {
synchronized (messageProcessors) {
for (SipMessageProcessor listener : messageProcessors)
if (!listener.processMessage(requestEvent)) return true;
}
// get the content
String content = null;
Request req = requestEvent.getRequest();
try {
content = new String(req.getRawContent(), getCharset(req));
} catch (UnsupportedEncodingException ex) {
if (logger.isDebugEnabled()) logger.debug("failed to convert the message charset");
content = new String(requestEvent.getRequest().getRawContent());
}
// who sent this request ?
FromHeader fromHeader = (FromHeader) requestEvent.getRequest().getHeader(FromHeader.NAME);
if (fromHeader == null) {
logger.error("received a request without a from header");
return false;
}
Contact from =
opSetPersPresence.resolveContactID(fromHeader.getAddress().getURI().toString());
ContentTypeHeader ctheader = (ContentTypeHeader) req.getHeader(ContentTypeHeader.NAME);
String ctype = null;
String cencoding = null;
if (ctheader == null) {
ctype = DEFAULT_MIME_TYPE;
} else {
ctype = ctheader.getContentType() + "/" + ctheader.getContentSubType();
cencoding = ctheader.getParameter("charset");
}
if (cencoding == null) cencoding = DEFAULT_MIME_ENCODING;
Message newMessage = createMessage(content, ctype, cencoding, null);
if (from == null) {
if (logger.isDebugEnabled())
logger.debug(
"received a message from an unknown contact: "
+ fromHeader.getAddress().getURI().toString());
// create the volatile contact
from = opSetPersPresence.createVolatileContact(fromHeader.getAddress().getURI().toString());
}
// answer ok
try {
Response ok =
sipProvider.getMessageFactory().createResponse(Response.OK, requestEvent.getRequest());
SipStackSharing.getOrCreateServerTransaction(requestEvent).sendResponse(ok);
} catch (ParseException exc) {
logger.error("failed to build the response", exc);
} catch (SipException exc) {
logger.error("failed to send the response : " + exc.getMessage(), exc);
} catch (InvalidArgumentException exc) {
if (logger.isDebugEnabled())
logger.debug("Invalid argument for createResponse : " + exc.getMessage(), exc);
}
// fire an event
MessageReceivedEvent msgReceivedEvt =
new MessageReceivedEvent(newMessage, from, System.currentTimeMillis());
fireMessageEvent(msgReceivedEvt);
return true;
}
@Override
public boolean processTimeout(TimeoutEvent timeoutEvent) {
synchronized (messageProcessors) {
for (SipMessageProcessor listener : messageProcessors)
if (!listener.processTimeout(timeoutEvent, sentMsg)) return true;
}
// this is normaly handled by the SIP stack
logger.error("Timeout event thrown : " + timeoutEvent.toString());
if (timeoutEvent.isServerTransaction()) {
logger.warn("The sender has probably not received our OK");
return false;
}
Request req = timeoutEvent.getClientTransaction().getRequest();
// get the content
String content = null;
try {
content = new String(req.getRawContent(), getCharset(req));
} catch (UnsupportedEncodingException ex) {
logger.warn("failed to convert the message charset", ex);
content = new String(req.getRawContent());
}
// to who this request has been sent ?
ToHeader toHeader = (ToHeader) req.getHeader(ToHeader.NAME);
if (toHeader == null) {
logger.error("received a request without a to header");
return false;
}
Contact to = opSetPersPresence.resolveContactID(toHeader.getAddress().getURI().toString());
Message failedMessage = null;
if (to == null) {
logger.error(
"timeout on a message sent to an unknown contact : "
+ toHeader.getAddress().getURI().toString());
// we don't know what message it concerns, so create a new
// one
failedMessage = createMessage(content);
} else {
// try to retrieve the original message
String key = ((CallIdHeader) req.getHeader(CallIdHeader.NAME)).getCallId();
failedMessage = sentMsg.get(key);
if (failedMessage == null) {
// should never happen
logger.error("Couldn't find the sent message.");
// we don't know what the message is so create a new one
// based on the content of the failed request.
failedMessage = createMessage(content);
}
}
// error for delivering the message
fireMessageDeliveryFailed(
// we don't know what message it concerns
failedMessage, to, MessageDeliveryFailedEvent.INTERNAL_ERROR);
return true;
}
/**
* 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;
}
/**
* 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;
}
/**
* 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 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);
}
}
}
/**
* 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;
}
