protected void runTask() {
SIPTransaction transaction = SIPTransaction.this;
// release the connection associated with this transaction.
SIPTransactionStack sipStack = transaction.getSIPStack();
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
sipStack.getStackLogger().logDebug("LingerTimer: run() : " + getTransactionId());
}
if (transaction instanceof SIPClientTransaction) {
sipStack.removeTransaction(transaction);
transaction.close();
} else if (transaction instanceof ServerTransaction) {
// Remove it from the set
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
sipStack.getStackLogger().logDebug("removing" + transaction);
sipStack.removeTransaction(transaction);
if ((!sipStack.cacheServerConnections) && --transaction.encapsulatedChannel.useCount <= 0) {
// Close the encapsulated socket if stack is configured
transaction.close();
} else {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)
&& (!sipStack.cacheServerConnections)
&& transaction.isReliable()) {
int useCount = transaction.encapsulatedChannel.useCount;
sipStack.getStackLogger().logDebug("Use Count = " + useCount);
}
}
}
}
/**
* Send a message to a specified receiver address.
*
* @param msg string to send.
* @param peerAddress Address of the place to send it to.
* @param peerPort the port to send it to.
* @throws IOException If there is trouble sending this message.
*/
protected void sendMessage(byte[] msg, InetAddress peerAddress, int peerPort, boolean reConnect)
throws IOException {
// Via is not included in the request so silently drop the reply.
if (sipStack.isLoggingEnabled() && this.sipStack.isLogStackTraceOnMessageSend()) {
this.sipStack.getStackLogger().logStackTrace(StackLogger.TRACE_INFO);
}
if (peerPort == -1) {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
this.sipStack
.getStackLogger()
.logDebug(getClass().getName() + ":sendMessage: Dropping reply!");
}
throw new IOException("Receiver port not set ");
} else {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
this.sipStack
.getStackLogger()
.logDebug(
"sendMessage "
+ peerAddress.getHostAddress()
+ "/"
+ peerPort
+ "\n"
+ "messageSize = "
+ msg.length
+ " message = "
+ new String(msg));
this.sipStack.getStackLogger().logDebug("*******************\n");
}
}
DatagramPacket reply = new DatagramPacket(msg, msg.length, peerAddress, peerPort);
try {
DatagramSocket sock;
boolean created = false;
if (sipStack.udpFlag) {
// Use the socket from the message processor (for firewall
// support use the same socket as the message processor
// socket -- feature request # 18 from java.net). This also
// makes the whole thing run faster!
sock = ((UDPMessageProcessor) messageProcessor).sock;
// Bind the socket to the stack address in case there
// are multiple interfaces on the machine (feature reqeust
// by Will Scullin) 0 binds to an ephemeral port.
// sock = new DatagramSocket(0,sipStack.stackInetAddress);
} else {
// bind to any interface and port.
sock = new DatagramSocket();
created = true;
}
sock.send(reply);
if (created) sock.close();
} catch (IOException ex) {
throw ex;
} catch (Exception ex) {
InternalErrorHandler.handleException(ex);
}
}
/**
* Return a reply from a pre-constructed reply. This sends the message back to the entity who
* caused us to create this channel in the first place.
*
* @param sipMessage Message string to send.
* @throws IOException If there is a problem with sending the message.
*/
public void sendMessage(SIPMessage sipMessage) throws IOException {
if (sipStack.isLoggingEnabled() && this.sipStack.isLogStackTraceOnMessageSend()) {
if (sipMessage instanceof SIPRequest && ((SIPRequest) sipMessage).getRequestLine() != null) {
/*
* We dont want to log empty trace messages.
*/
this.sipStack.getStackLogger().logStackTrace(StackLogger.TRACE_INFO);
} else {
this.sipStack.getStackLogger().logStackTrace(StackLogger.TRACE_INFO);
}
}
// Test and see where we are going to send the messsage. If the message
// is sent back to oursleves, just
// shortcircuit processing.
long time = System.currentTimeMillis();
try {
for (MessageProcessor messageProcessor : sipStack.getMessageProcessors()) {
if (messageProcessor.getIpAddress().equals(this.peerAddress)
&& messageProcessor.getPort() == this.peerPort
&& messageProcessor.getTransport().equals(this.peerProtocol)) {
MessageChannel messageChannel =
messageProcessor.createMessageChannel(this.peerAddress, this.peerPort);
if (messageChannel instanceof RawMessageChannel) {
((RawMessageChannel) messageChannel).processMessage(sipMessage);
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
sipStack.getStackLogger().logDebug("Self routing message");
return;
}
}
}
byte[] msg = sipMessage.encodeAsBytes(this.getTransport());
sendMessage(msg, peerAddress, peerPort, peerProtocol, sipMessage instanceof SIPRequest);
} catch (IOException ex) {
throw ex;
} catch (Exception ex) {
sipStack.getStackLogger().logError("An exception occured while sending message", ex);
throw new IOException("An exception occured while sending message");
} finally {
if (sipStack.getStackLogger().isLoggingEnabled(ServerLogger.TRACE_MESSAGES)
&& !sipMessage.isNullRequest()) logMessage(sipMessage, peerAddress, peerPort, time);
else if (sipStack.getStackLogger().isLoggingEnabled(ServerLogger.TRACE_DEBUG))
sipStack.getStackLogger().logDebug("Sent EMPTY Message");
}
}
/**
* Sets the request message that this transaction handles.
*
* @param newOriginalRequest Request being handled.
*/
public void setOriginalRequest(SIPRequest newOriginalRequest) {
// Branch value of topmost Via header
String newBranch;
if (this.originalRequest != null
&& (!this.originalRequest
.getTransactionId()
.equals(newOriginalRequest.getTransactionId()))) {
sipStack.removeTransactionHash(this);
}
// This will be cleared later.
this.originalRequest = newOriginalRequest;
// just cache the control information so the
// original request can be released later.
this.method = newOriginalRequest.getMethod();
this.from = (From) newOriginalRequest.getFrom();
this.to = (To) newOriginalRequest.getTo();
// Save these to avoid concurrent modification exceptions!
this.toTag = this.to.getTag();
this.fromTag = this.from.getTag();
this.callId = (CallID) newOriginalRequest.getCallId();
this.cSeq = newOriginalRequest.getCSeq().getSeqNumber();
this.event = (Event) newOriginalRequest.getHeader("Event");
this.transactionId = newOriginalRequest.getTransactionId();
originalRequest.setTransaction(this);
// If the message has an explicit branch value set,
newBranch = ((Via) newOriginalRequest.getViaHeaders().getFirst()).getBranch();
if (newBranch != null) {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
sipStack.getStackLogger().logDebug("Setting Branch id : " + newBranch);
// Override the default branch with the one
// set by the message
setBranch(newBranch);
} else {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
sipStack
.getStackLogger()
.logDebug("Branch id is null - compute TID!" + newOriginalRequest.encode());
setBranch(newOriginalRequest.getTransactionId());
}
}
/**
* Transaction constructor.
*
* @param newParentStack Parent stack for this transaction.
* @param newEncapsulatedChannel Underlying channel for this transaction.
*/
protected SIPTransaction(
SIPTransactionStack newParentStack, MessageChannel newEncapsulatedChannel) {
sipStack = newParentStack;
this.semaphore = new Semaphore(1, true);
encapsulatedChannel = newEncapsulatedChannel;
// Record this to check if the address has changed before sending
// message to avoid possible race condition.
this.peerPort = newEncapsulatedChannel.getPeerPort();
this.peerAddress = newEncapsulatedChannel.getPeerAddress();
this.peerInetAddress = newEncapsulatedChannel.getPeerInetAddress();
// @@@ hagai
this.peerPacketSourcePort = newEncapsulatedChannel.getPeerPacketSourcePort();
this.peerPacketSourceAddress = newEncapsulatedChannel.getPeerPacketSourceAddress();
this.peerProtocol = newEncapsulatedChannel.getPeerProtocol();
if (this.isReliable()) {
encapsulatedChannel.useCount++;
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
sipStack
.getStackLogger()
.logDebug(
"use count for encapsulated channel" + this + " " + encapsulatedChannel.useCount);
}
this.currentState = null;
disableRetransmissionTimer();
disableTimeoutTimer();
eventListeners = Collections.synchronizedSet(new HashSet<SIPTransactionEventListener>());
// Always add the parent stack as a listener
// of this transaction
addEventListener(newParentStack);
}
/**
* Changes the state of this transaction.
*
* @param newState New state of this transaction.
*/
public void setState(TransactionState newState) {
// PATCH submitted by sribeyron
if (currentState == TransactionState.COMPLETED) {
if (newState != TransactionState.TERMINATED && newState != TransactionState.CONFIRMED)
newState = TransactionState.COMPLETED;
}
if (currentState == TransactionState.CONFIRMED) {
if (newState != TransactionState.TERMINATED) newState = TransactionState.CONFIRMED;
}
if (currentState != TransactionState.TERMINATED) currentState = newState;
else newState = currentState;
// END OF PATCH
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
sipStack
.getStackLogger()
.logDebug(
"Transaction:setState "
+ newState
+ " "
+ this
+ " branchID = "
+ this.getBranch()
+ " isClient = "
+ (this instanceof SIPClientTransaction));
sipStack.getStackLogger().logStackTrace();
}
}
/**
* Log a message into the log file.
*
* @param message message to log into the log file.
*/
private void logMessage(String message) {
// String tname = Thread.currentThread().getName();
checkLogFile();
String logInfo = message;
if (printWriter != null) {
printWriter.println(logInfo);
}
if (sipStack.isLoggingEnabled()) {
stackLogger.logInfo(logInfo);
}
}
/**
* Implementation of the ParseExceptionListener interface.
*
* @param ex Exception that is given to us by the parser.
* @throws ParseException If we choose to reject the header or message.
*/
public void handleException(
ParseException ex, SIPMessage sipMessage, Class hdrClass, String header, String message)
throws ParseException {
if (sipStack.isLoggingEnabled()) this.sipStack.getStackLogger().logException(ex);
// Log the bad message for later reference.
if ((hdrClass != null)
&& (hdrClass.equals(From.class)
|| hdrClass.equals(To.class)
|| hdrClass.equals(CSeq.class)
|| hdrClass.equals(Via.class)
|| hdrClass.equals(CallID.class)
|| hdrClass.equals(RequestLine.class)
|| hdrClass.equals(StatusLine.class))) {
if (sipStack.isLoggingEnabled()) {
sipStack.getStackLogger().logError("BAD MESSAGE!");
sipStack.getStackLogger().logError(message);
}
throw ex;
} else {
sipMessage.addUnparsed(header);
}
}
protected void semRelease() {
try {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
sipStack.getStackLogger().logDebug("semRelease ]]]]" + this);
sipStack.getStackLogger().logStackTrace();
}
this.isSemaphoreAquired = false;
this.semaphore.release();
} catch (Exception ex) {
sipStack.getStackLogger().logError("Unexpected exception releasing sem", ex);
}
}
/**
* Enables a timeout event to occur for this transaction after the number of ticks passed to this
* method.
*
* @param tickCount Number of ticks before this transaction times out.
*/
protected final void enableTimeoutTimer(int tickCount) {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
sipStack
.getStackLogger()
.logDebug(
"enableTimeoutTimer "
+ this
+ " tickCount "
+ tickCount
+ " currentTickCount = "
+ timeoutTimerTicksLeft);
timeoutTimerTicksLeft = tickCount;
}
/**
* Constructor. We create one of these when we send out a message.
*
* @param targetAddr INET address of the place where we want to send messages.
* @param port target port (where we want to send the message).
* @param sipStack our SIP Stack.
*/
protected UDPMessageChannel(
InetAddress targetAddr,
int port,
SIPTransactionStack sipStack,
UDPMessageProcessor messageProcessor) {
peerAddress = targetAddr;
peerPort = port;
peerProtocol = "UDP";
super.messageProcessor = messageProcessor;
this.myAddress = messageProcessor.getIpAddress().getHostAddress();
this.myPort = messageProcessor.getPort();
this.sipStack = sipStack;
if (sipStack.isLoggingEnabled()) {
this.sipStack.logWriter.logDebug(
"Creating message channel " + targetAddr.getHostAddress() + "/" + port);
}
}
/**
* Constructor. We create one of these when we send out a message.
*
* @param targetAddr INET address of the place where we want to send messages.
* @param port target port (where we want to send the message).
* @param sipStack our SIP Stack.
*/
protected UDPMessageChannel(
InetAddress targetAddr,
int port,
SIPTransactionStack sipStack,
UDPMessageProcessor messageProcessor) {
peerAddress = targetAddr;
peerPort = port;
peerProtocol = "UDP";
super.messageProcessor = messageProcessor;
this.myAddress = messageProcessor.getIpAddress().getHostAddress();
this.myPort = messageProcessor.getPort();
this.sipStack = sipStack;
// jeand : Create a new string message parser to parse the list of messages.
myParser = sipStack.getMessageParserFactory().createMessageParser(sipStack);
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
this.sipStack
.getStackLogger()
.logDebug("Creating message channel " + targetAddr.getHostAddress() + "/" + port);
}
}
/**
* A given tx can process only a single outstanding event at a time. This semaphore gaurds
* re-entrancy to the transaction.
*/
public boolean acquireSem() {
boolean retval = false;
try {
if (sipStack.getStackLogger().isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
sipStack.getStackLogger().logDebug("acquireSem [[[[" + this);
sipStack.getStackLogger().logStackTrace();
}
if (this.sipStack.maxListenerResponseTime == -1) {
this.semaphore.acquire();
retval = true;
} else {
retval = this.semaphore.tryAcquire(this.sipStack.maxListenerResponseTime, TimeUnit.SECONDS);
}
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
sipStack.getStackLogger().logDebug("acquireSem() returning : " + retval);
return retval;
} catch (Exception ex) {
sipStack.getStackLogger().logError("Unexpected exception acquiring sem", ex);
InternalErrorHandler.handleException(ex);
return false;
} finally {
this.isSemaphoreAquired = retval;
}
}
/**
* Send a message to a specified receiver address.
*
* @param msg message string to send.
* @param peerAddress Address of the place to send it to.
* @param peerPort the port to send it to.
* @param peerProtocol protocol to use to send.
* @throws IOException If there is trouble sending this message.
*/
protected void sendMessage(
byte[] msg, InetAddress peerAddress, int peerPort, String peerProtocol, boolean retry)
throws IOException {
// Via is not included in the request so silently drop the reply.
if (peerPort == -1) {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
this.sipStack
.getStackLogger()
.logDebug(getClass().getName() + ":sendMessage: Dropping reply!");
}
throw new IOException("Receiver port not set ");
} else {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
this.sipStack
.getStackLogger()
.logDebug(
":sendMessage "
+ peerAddress.getHostAddress()
+ "/"
+ peerPort
+ "\n"
+ " messageSize = "
+ msg.length);
}
}
if (peerProtocol.compareToIgnoreCase("UDP") == 0) {
DatagramPacket reply = new DatagramPacket(msg, msg.length, peerAddress, peerPort);
try {
DatagramSocket sock;
if (sipStack.udpFlag) {
sock = ((UDPMessageProcessor) messageProcessor).sock;
} else {
// bind to any interface and port.
sock = sipStack.getNetworkLayer().createDatagramSocket();
}
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
this.sipStack
.getStackLogger()
.logDebug(
"sendMessage "
+ peerAddress.getHostAddress()
+ "/"
+ peerPort
+ "\n"
+ new String(msg));
}
sock.send(reply);
if (!sipStack.udpFlag) sock.close();
} catch (IOException ex) {
throw ex;
} catch (Exception ex) {
InternalErrorHandler.handleException(ex);
}
} else {
// Use TCP to talk back to the sender.
Socket outputSocket =
sipStack.ioHandler.sendBytes(
this.messageProcessor.getIpAddress(), peerAddress, peerPort, "tcp", msg, retry, this);
OutputStream myOutputStream = outputSocket.getOutputStream();
myOutputStream.write(msg, 0, msg.length);
myOutputStream.flush();
// The socket is cached (dont close it!);
}
}
public void checkLogFile() {
if (logFileName == null || traceLevel < TRACE_MESSAGES) {
// Dont create a log file if tracing is
// disabled.
return;
}
try {
File logFile = new File(logFileName);
if (!logFile.exists()) {
logFile.createNewFile();
printWriter = null;
}
// Append buffer to the end of the file unless otherwise specified
// by the user.
if (printWriter == null) {
boolean overwrite =
Boolean.valueOf(
configurationProperties.getProperty("gov.nist.javax.sip.SERVER_LOG_OVERWRITE"));
FileWriter fw = new FileWriter(logFileName, !overwrite);
printWriter = new PrintWriter(fw, true);
printWriter.println(
"<!-- "
+ "Use the Trace Viewer in src/tools/tracesviewer to"
+ " view this trace \n"
+ "Here are the stack configuration properties \n"
+ "javax.sip.IP_ADDRESS= "
+ configurationProperties.getProperty("javax.sip.IP_ADDRESS")
+ "\n"
+ "javax.sip.STACK_NAME= "
+ configurationProperties.getProperty("javax.sip.STACK_NAME")
+ "\n"
+ "javax.sip.ROUTER_PATH= "
+ configurationProperties.getProperty("javax.sip.ROUTER_PATH")
+ "\n"
+ "javax.sip.OUTBOUND_PROXY= "
+ configurationProperties.getProperty("javax.sip.OUTBOUND_PROXY")
+ "\n"
+ "-->");
printWriter.println(
"<description\n logDescription=\""
+ description
+ "\"\n name=\""
+ configurationProperties.getProperty("javax.sip.STACK_NAME")
+ "\"\n auxInfo=\""
+ auxInfo
+ "\"/>\n ");
if (auxInfo != null) {
if (sipStack.isLoggingEnabled()) {
stackLogger.logDebug(
"Here are the stack configuration properties \n"
+ "javax.sip.IP_ADDRESS= "
+ configurationProperties.getProperty("javax.sip.IP_ADDRESS")
+ "\n"
+ "javax.sip.ROUTER_PATH= "
+ configurationProperties.getProperty("javax.sip.ROUTER_PATH")
+ "\n"
+ "javax.sip.OUTBOUND_PROXY= "
+ configurationProperties.getProperty("javax.sip.OUTBOUND_PROXY")
+ "\n"
+ "gov.nist.javax.sip.CACHE_CLIENT_CONNECTIONS= "
+ configurationProperties.getProperty(
"gov.nist.javax.sip.CACHE_CLIENT_CONNECTIONS")
+ "\n"
+ "gov.nist.javax.sip.CACHE_SERVER_CONNECTIONS= "
+ configurationProperties.getProperty(
"gov.nist.javax.sip.CACHE_SERVER_CONNECTIONS")
+ "\n"
+ "gov.nist.javax.sip.REENTRANT_LISTENER= "
+ configurationProperties.getProperty("gov.nist.javax.sip.REENTRANT_LISTENER")
+ "gov.nist.javax.sip.THREAD_POOL_SIZE= "
+ configurationProperties.getProperty("gov.nist.javax.sip.THREAD_POOL_SIZE")
+ "\n");
stackLogger.logDebug(" ]]> ");
stackLogger.logDebug("</debug>");
stackLogger.logDebug(
"<description\n logDescription=\""
+ description
+ "\"\n name=\""
+ stackIpAddress
+ "\"\n auxInfo=\""
+ auxInfo
+ "\"/>\n ");
stackLogger.logDebug("<debug>");
stackLogger.logDebug("<![CDATA[ ");
}
} else {
if (sipStack.isLoggingEnabled()) {
stackLogger.logDebug(
"Here are the stack configuration properties \n" + configurationProperties + "\n");
stackLogger.logDebug(" ]]>");
stackLogger.logDebug("</debug>");
stackLogger.logDebug(
"<description\n logDescription=\""
+ description
+ "\"\n name=\""
+ stackIpAddress
+ "\" />\n");
stackLogger.logDebug("<debug>");
stackLogger.logDebug("<![CDATA[ ");
}
}
}
} catch (IOException ex) {
}
}
/**
* Process an incoming datagram
*
* @param packet is the incoming datagram packet.
*/
private void processIncomingDataPacket(DatagramPacket packet) throws Exception {
this.peerAddress = packet.getAddress();
int packetLength = packet.getLength();
// Read bytes and put it in a eueue.
byte[] bytes = packet.getData();
byte[] msgBytes = new byte[packetLength];
System.arraycopy(bytes, 0, msgBytes, 0, packetLength);
// Do debug logging.
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
this.sipStack
.getStackLogger()
.logDebug(
"UDPMessageChannel: processIncomingDataPacket : peerAddress = "
+ peerAddress.getHostAddress()
+ "/"
+ packet.getPort()
+ " Length = "
+ packetLength);
}
SIPMessage sipMessage = null;
try {
this.receptionTime = System.currentTimeMillis();
sipMessage = myParser.parseSIPMessage(msgBytes, true, false, this);
// myParser = null;
} catch (ParseException ex) {
// myParser = null; // let go of the parser reference.
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
this.sipStack.getStackLogger().logDebug("Rejecting message ! " + new String(msgBytes));
this.sipStack.getStackLogger().logDebug("error message " + ex.getMessage());
this.sipStack.getStackLogger().logException(ex);
}
// JvB: send a 400 response for requests (except ACK)
// Currently only UDP, @todo also other transports
String msgString = new String(msgBytes, 0, packetLength);
if (!msgString.startsWith("SIP/") && !msgString.startsWith("ACK ")) {
String badReqRes = createBadReqRes(msgString, ex);
if (badReqRes != null) {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
sipStack.getStackLogger().logDebug("Sending automatic 400 Bad Request:");
sipStack.getStackLogger().logDebug(badReqRes);
}
try {
this.sendMessage(badReqRes.getBytes(), peerAddress, packet.getPort(), "UDP", false);
} catch (IOException e) {
this.sipStack.getStackLogger().logException(e);
}
} else {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
sipStack.getStackLogger().logDebug("Could not formulate automatic 400 Bad Request");
}
}
}
return;
}
// No parse exception but null message - reject it and
// march on (or return).
// exit this message processor if the message did not parse.
if (sipMessage == null) {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
this.sipStack.getStackLogger().logDebug("Rejecting message ! + Null message parsed.");
}
String key = packet.getAddress().getHostAddress() + ":" + packet.getPort();
if (pingBackRecord.get(key) == null && sipStack.getMinKeepAliveInterval() > 0) {
byte[] retval = "\r\n\r\n".getBytes();
DatagramPacket keepalive =
new DatagramPacket(retval, 0, retval.length, packet.getAddress(), packet.getPort());
PingBackTimerTask task =
new PingBackTimerTask(packet.getAddress().getHostAddress(), packet.getPort());
this.pingBackRecord.put(key, task);
this.sipStack.getTimer().schedule(task, sipStack.getMinKeepAliveInterval() * 1000);
((UDPMessageProcessor) this.messageProcessor).sock.send(keepalive);
} else {
sipStack.getStackLogger().logDebug("Not sending ping back");
}
return;
}
Via topMostVia = sipMessage.getTopmostVia();
// Check for the required headers.
if (sipMessage.getFrom() == null
|| sipMessage.getTo() == null
|| sipMessage.getCallId() == null
|| sipMessage.getCSeq() == null
|| topMostVia == null) {
String badmsg = new String(msgBytes);
if (sipStack.isLoggingEnabled()) {
this.sipStack.getStackLogger().logError("bad message " + badmsg);
this.sipStack
.getStackLogger()
.logError(
">>> Dropped Bad Msg "
+ "From = "
+ sipMessage.getFrom()
+ "To = "
+ sipMessage.getTo()
+ "CallId = "
+ sipMessage.getCallId()
+ "CSeq = "
+ sipMessage.getCSeq()
+ "Via = "
+ sipMessage.getViaHeaders());
}
return;
}
// For a request first via header tells where the message
// is coming from.
// For response, just get the port from the packet.
if (sipMessage instanceof SIPRequest) {
Hop hop = sipStack.addressResolver.resolveAddress(topMostVia.getHop());
this.peerPort = hop.getPort();
this.peerProtocol = topMostVia.getTransport();
this.peerPacketSourceAddress = packet.getAddress();
this.peerPacketSourcePort = packet.getPort();
try {
this.peerAddress = packet.getAddress();
// Check to see if the received parameter matches
// the peer address and tag it appropriately.
boolean hasRPort = topMostVia.hasParameter(Via.RPORT);
if (hasRPort || !hop.getHost().equals(this.peerAddress.getHostAddress())) {
topMostVia.setParameter(Via.RECEIVED, this.peerAddress.getHostAddress());
}
if (hasRPort) {
topMostVia.setParameter(Via.RPORT, Integer.toString(this.peerPacketSourcePort));
}
} catch (java.text.ParseException ex1) {
InternalErrorHandler.handleException(ex1);
}
} else {
this.peerPacketSourceAddress = packet.getAddress();
this.peerPacketSourcePort = packet.getPort();
this.peerAddress = packet.getAddress();
this.peerPort = packet.getPort();
this.peerProtocol = topMostVia.getTransport();
}
this.processMessage(sipMessage);
}
/**
* Actually proces the parsed message.
*
* @param sipMessage
*/
public void processMessage(SIPMessage sipMessage) {
if (sipMessage instanceof SIPRequest) {
SIPRequest sipRequest = (SIPRequest) sipMessage;
// This is a request - process it.
// So far so good -- we will commit this message if
// all processing is OK.
if (sipStack.getStackLogger().isLoggingEnabled(ServerLogger.TRACE_MESSAGES)) {
this.sipStack.serverLogger.logMessage(
sipMessage,
this.getPeerHostPort().toString(),
this.getHost() + ":" + this.myPort,
false,
receptionTime);
}
final ServerRequestInterface sipServerRequest =
sipStack.newSIPServerRequest(sipRequest, this);
// Drop it if there is no request returned
if (sipServerRequest == null) {
if (sipStack.isLoggingEnabled()) {
this.sipStack
.getStackLogger()
.logWarning("Null request interface returned -- dropping request");
}
return;
}
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
this.sipStack
.getStackLogger()
.logDebug("About to process " + sipRequest.getFirstLine() + "/" + sipServerRequest);
try {
sipServerRequest.processRequest(sipRequest, this);
} finally {
if (sipServerRequest instanceof SIPTransaction) {
SIPServerTransaction sipServerTx = (SIPServerTransaction) sipServerRequest;
if (!sipServerTx.passToListener()) {
((SIPTransaction) sipServerRequest).releaseSem();
}
}
}
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
this.sipStack
.getStackLogger()
.logDebug("Done processing " + sipRequest.getFirstLine() + "/" + sipServerRequest);
// So far so good -- we will commit this message if
// all processing is OK.
} else {
// Handle a SIP Reply message.
SIPResponse sipResponse = (SIPResponse) sipMessage;
try {
sipResponse.checkHeaders();
} catch (ParseException ex) {
if (sipStack.isLoggingEnabled())
sipStack
.getStackLogger()
.logError("Dropping Badly formatted response message >>> " + sipResponse);
return;
}
ServerResponseInterface sipServerResponse = sipStack.newSIPServerResponse(sipResponse, this);
if (sipServerResponse != null) {
try {
if (sipServerResponse instanceof SIPClientTransaction
&& !((SIPClientTransaction) sipServerResponse).checkFromTag(sipResponse)) {
if (sipStack.isLoggingEnabled())
sipStack
.getStackLogger()
.logError("Dropping response message with invalid tag >>> " + sipResponse);
return;
}
sipServerResponse.processResponse(sipResponse, this);
} finally {
if (sipServerResponse instanceof SIPTransaction
&& !((SIPTransaction) sipServerResponse).passToListener())
((SIPTransaction) sipServerResponse).releaseSem();
}
// Normal processing of message.
} else {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
this.sipStack.getStackLogger().logDebug("null sipServerResponse!");
}
}
}
}
/**
* Extract identities from certificates exchanged over TLS, based on guidelines from
* draft-ietf-sip-domain-certs-04.
*
* @return list of authenticated identities
*/
public List<String> extractCertIdentities() throws SSLPeerUnverifiedException {
if (this.getMessageChannel() instanceof TLSMessageChannel) {
List<String> certIdentities = new ArrayList<String>();
Certificate[] certs = getPeerCertificates();
if (certs == null) {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
sipStack.getStackLogger().logDebug("No certificates available");
}
return certIdentities;
}
for (Certificate cert : certs) {
X509Certificate x509cert = (X509Certificate) cert;
Collection<List<?>> subjAltNames = null;
try {
subjAltNames = x509cert.getSubjectAlternativeNames();
} catch (CertificateParsingException ex) {
if (sipStack.isLoggingEnabled()) {
sipStack.getStackLogger().logError("Error parsing TLS certificate", ex);
}
}
// subjAltName types are defined in rfc2459
final Integer dnsNameType = 2;
final Integer uriNameType = 6;
if (subjAltNames != null) {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
sipStack.getStackLogger().logDebug("found subjAltNames: " + subjAltNames);
}
// First look for a URI in the subjectAltName field
// as per draft-ietf-sip-domain-certs-04
for (List<?> altName : subjAltNames) {
// 0th position is the alt name type
// 1st position is the alt name data
if (altName.get(0).equals(uriNameType)) {
SipURI altNameUri;
try {
altNameUri = new AddressFactoryImpl().createSipURI((String) altName.get(1));
String altHostName = altNameUri.getHost();
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
sipStack
.getStackLogger()
.logDebug("found uri " + altName.get(1) + ", hostName " + altHostName);
}
certIdentities.add(altHostName);
} catch (ParseException e) {
if (sipStack.isLoggingEnabled()) {
sipStack
.getStackLogger()
.logError("certificate contains invalid uri: " + altName.get(1));
}
}
}
}
// DNS An implementation MUST accept a domain name system
// identifier as a SIP domain identity if and only if no other
// identity is found that matches the "sip" URI type described
// above.
if (certIdentities.isEmpty()) {
for (List<?> altName : subjAltNames) {
if (altName.get(0).equals(dnsNameType)) {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
sipStack.getStackLogger().logDebug("found dns " + altName.get(1));
}
certIdentities.add(altName.get(1).toString());
}
}
}
} else {
// If and only if the subjectAltName does not appear in the
// certificate, the implementation MAY examine the CN field of the
// certificate. If a valid DNS name is found there, the
// implementation MAY accept this value as a SIP domain identity.
String dname = x509cert.getSubjectDN().getName();
String cname = "";
try {
Pattern EXTRACT_CN = Pattern.compile(".*CN\\s*=\\s*([\\w*\\.]+).*");
Matcher matcher = EXTRACT_CN.matcher(dname);
if (matcher.matches()) {
cname = matcher.group(1);
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
sipStack.getStackLogger().logDebug("found CN: " + cname + " from DN: " + dname);
}
certIdentities.add(cname);
}
} catch (Exception ex) {
if (sipStack.isLoggingEnabled()) {
sipStack.getStackLogger().logError("exception while extracting CN", ex);
}
}
}
}
return certIdentities;
} else throw new UnsupportedOperationException("Not a TLS channel");
}
/** Set the passToListener flag to true. */
public void setPassToListener() {
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
sipStack.getStackLogger().logDebug("setPassToListener()");
}
this.toListener = true;
}
/**
* Process the message through the transaction and sends it to the SIP peer.
*
* @param messageToSend Message to send to the SIP peer.
*/
public void sendMessage(final SIPMessage messageToSend) throws IOException {
// Use the peer address, port and transport
// that was specified when the transaction was
// created. Bug was noted by Bruce Evangelder
// soleo communications.
try {
final RawMessageChannel channel = (RawMessageChannel) encapsulatedChannel;
for (MessageProcessor messageProcessor : sipStack.getMessageProcessors()) {
boolean addrmatch =
messageProcessor
.getIpAddress()
.getHostAddress()
.toString()
.equals(this.getPeerAddress());
if (addrmatch
&& messageProcessor.getPort() == this.getPeerPort()
&& messageProcessor.getTransport().equalsIgnoreCase(this.getPeerProtocol())) {
if (channel instanceof TCPMessageChannel) {
try {
Runnable processMessageTask =
new Runnable() {
public void run() {
try {
((TCPMessageChannel) channel)
.processMessage(
(SIPMessage) messageToSend.clone(), getPeerInetAddress());
} catch (Exception ex) {
if (getSIPStack()
.getStackLogger()
.isLoggingEnabled(ServerLogger.TRACE_ERROR)) {
getSIPStack()
.getStackLogger()
.logError("Error self routing message cause by: ", ex);
}
}
}
};
getSIPStack().getSelfRoutingThreadpoolExecutor().execute(processMessageTask);
} catch (Exception e) {
sipStack.getStackLogger().logError("Error passing message in self routing", e);
}
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
sipStack.getStackLogger().logDebug("Self routing message");
return;
}
if (channel instanceof RawMessageChannel) {
try {
Runnable processMessageTask =
new Runnable() {
public void run() {
try {
((RawMessageChannel) channel)
.processMessage((SIPMessage) messageToSend.clone());
} catch (Exception ex) {
if (getSIPStack()
.getStackLogger()
.isLoggingEnabled(ServerLogger.TRACE_ERROR)) {
getSIPStack()
.getStackLogger()
.logError("Error self routing message cause by: ", ex);
}
}
}
};
getSIPStack().getSelfRoutingThreadpoolExecutor().execute(processMessageTask);
} catch (Exception e) {
sipStack.getStackLogger().logError("Error passing message in self routing", e);
}
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
sipStack.getStackLogger().logDebug("Self routing message");
return;
}
}
}
encapsulatedChannel.sendMessage(messageToSend, this.peerInetAddress, this.peerPort);
} finally {
this.startTransactionTimer();
}
}
/**
* Process an incoming datagram
*
* @param packet is the incoming datagram packet.
*/
private void processIncomingDataPacket(DatagramPacket packet) throws Exception {
this.peerAddress = packet.getAddress();
int packetLength = packet.getLength();
// Read bytes and put it in a eueue.
byte[] bytes = packet.getData();
byte[] msgBytes = new byte[packetLength];
System.arraycopy(bytes, 0, msgBytes, 0, packetLength);
// Do debug logging.
if (sipStack.isLoggingEnabled()) {
this.sipStack.logWriter.logDebug(
"UDPMessageChannel: processIncomingDataPacket : peerAddress = "
+ peerAddress.getHostAddress()
+ "/"
+ packet.getPort()
+ " Length = "
+ packetLength);
}
SIPMessage sipMessage = null;
try {
this.receptionTime = System.currentTimeMillis();
sipMessage = myParser.parseSIPMessage(msgBytes);
myParser = null;
} catch (ParseException ex) {
myParser = null; // let go of the parser reference.
if (sipStack.isLoggingEnabled()) {
this.sipStack.logWriter.logDebug("Rejecting message ! " + new String(msgBytes));
this.sipStack.logWriter.logDebug("error message " + ex.getMessage());
this.sipStack.logWriter.logException(ex);
}
// JvB: send a 400 response for requests (except ACK)
// Currently only UDP, @todo also other transports
String msgString = new String(msgBytes, 0, packetLength);
if (!msgString.startsWith("SIP/") && !msgString.startsWith("ACK ")) {
String badReqRes = createBadReqRes(msgString, ex);
if (badReqRes != null) {
if (sipStack.isLoggingEnabled()) {
sipStack.getLogWriter().logDebug("Sending automatic 400 Bad Request:");
sipStack.getLogWriter().logDebug(badReqRes);
}
try {
this.sendMessage(badReqRes.getBytes(), peerAddress, packet.getPort(), "UDP", false);
} catch (IOException e) {
this.sipStack.logWriter.logException(e);
}
} else {
if (sipStack.isLoggingEnabled()) {
sipStack.getLogWriter().logDebug("Could not formulate automatic 400 Bad Request");
}
}
}
return;
}
// No parse exception but null message - reject it and
// march on (or return).
// exit this message processor if the message did not parse.
if (sipMessage == null) {
if (sipStack.isLoggingEnabled()) {
this.sipStack.logWriter.logDebug("Rejecting message ! + Null message parsed.");
}
return;
}
ViaList viaList = sipMessage.getViaHeaders();
// Check for the required headers.
if (sipMessage.getFrom() == null
|| sipMessage.getTo() == null
|| sipMessage.getCallId() == null
|| sipMessage.getCSeq() == null
|| sipMessage.getViaHeaders() == null) {
String badmsg = new String(msgBytes);
if (sipStack.isLoggingEnabled()) {
this.sipStack.logWriter.logError("bad message " + badmsg);
this.sipStack.logWriter.logError(
">>> Dropped Bad Msg "
+ "From = "
+ sipMessage.getFrom()
+ "To = "
+ sipMessage.getTo()
+ "CallId = "
+ sipMessage.getCallId()
+ "CSeq = "
+ sipMessage.getCSeq()
+ "Via = "
+ sipMessage.getViaHeaders());
}
sipStack.logWriter.logError("BAD MESSAGE!");
return;
}
// For a request first via header tells where the message
// is coming from.
// For response, just get the port from the packet.
if (sipMessage instanceof SIPRequest) {
Via v = (Via) viaList.getFirst();
Hop hop = sipStack.addressResolver.resolveAddress(v.getHop());
this.peerPort = hop.getPort();
this.peerProtocol = v.getTransport();
this.peerPacketSourceAddress = packet.getAddress();
this.peerPacketSourcePort = packet.getPort();
try {
this.peerAddress = packet.getAddress();
// Check to see if the received parameter matches
// the peer address and tag it appropriately.
boolean hasRPort = v.hasParameter(Via.RPORT);
if (hasRPort || !hop.getHost().equals(this.peerAddress.getHostAddress())) {
v.setParameter(Via.RECEIVED, this.peerAddress.getHostAddress());
}
if (hasRPort) {
v.setParameter(Via.RPORT, Integer.toString(this.peerPacketSourcePort));
}
} catch (java.text.ParseException ex1) {
InternalErrorHandler.handleException(ex1);
}
} else {
this.peerPacketSourceAddress = packet.getAddress();
this.peerPacketSourcePort = packet.getPort();
this.peerAddress = packet.getAddress();
this.peerPort = packet.getPort();
this.peerProtocol = ((Via) viaList.getFirst()).getTransport();
}
this.processMessage(sipMessage);
}
/**
* A method that can be used to test if an incoming request belongs to this transction. This does
* not take the transaction state into account when doing the check otherwise it is identical to
* isMessagePartOfTransaction. This is useful for checking if a CANCEL belongs to this
* transaction.
*
* @param requestToTest is the request to test.
* @return true if the the request belongs to the transaction.
*/
public boolean doesCancelMatchTransaction(SIPRequest requestToTest) {
// List of Via headers in the message to test
ViaList viaHeaders;
// Topmost Via header in the list
Via topViaHeader;
// Branch code in the topmost Via header
String messageBranch;
// Flags whether the select message is part of this transaction
boolean transactionMatches;
transactionMatches = false;
if (this.getOriginalRequest() == null
|| this.getOriginalRequest().getMethod().equals(Request.CANCEL)) return false;
// Get the topmost Via header and its branch parameter
viaHeaders = requestToTest.getViaHeaders();
if (viaHeaders != null) {
topViaHeader = (Via) viaHeaders.getFirst();
messageBranch = topViaHeader.getBranch();
if (messageBranch != null) {
// If the branch parameter exists but
// does not start with the magic cookie,
if (!messageBranch.toLowerCase().startsWith(SIPConstants.BRANCH_MAGIC_COOKIE_LOWER_CASE)) {
// Flags this as old
// (RFC2543-compatible) client
// version
messageBranch = null;
}
}
// If a new branch parameter exists,
if (messageBranch != null && this.getBranch() != null) {
// If the branch equals the branch in
// this message,
if (getBranch().equalsIgnoreCase(messageBranch)
&& topViaHeader
.getSentBy()
.equals(((Via) getOriginalRequest().getViaHeaders().getFirst()).getSentBy())) {
transactionMatches = true;
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
sipStack.getStackLogger().logDebug("returning true");
}
} else {
// If this is an RFC2543-compliant message,
// If RequestURI, To tag, From tag,
// CallID, CSeq number, and top Via
// headers are the same,
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
sipStack.getStackLogger().logDebug("testing against " + getOriginalRequest());
if (getOriginalRequest().getRequestURI().equals(requestToTest.getRequestURI())
&& getOriginalRequest().getTo().equals(requestToTest.getTo())
&& getOriginalRequest().getFrom().equals(requestToTest.getFrom())
&& getOriginalRequest()
.getCallId()
.getCallId()
.equals(requestToTest.getCallId().getCallId())
&& getOriginalRequest().getCSeq().getSeqNumber()
== requestToTest.getCSeq().getSeqNumber()
&& topViaHeader.equals(getOriginalRequest().getViaHeaders().getFirst())) {
transactionMatches = true;
}
}
}
// JvB: Need to pass the CANCEL to the listener! Retransmitted INVITEs
// set it to false
if (transactionMatches) {
this.setPassToListener();
}
return transactionMatches;
}
/** Close the encapsulated channel. */
public void close() {
this.encapsulatedChannel.close();
if (sipStack.isLoggingEnabled(LogWriter.TRACE_DEBUG))
sipStack.getStackLogger().logDebug("Closing " + this.encapsulatedChannel);
}