/**
* This gets invoked when thread.start is called from the constructor. Implements a message loop -
* reading the tcp connection and processing messages until we are done or the other end has
* closed.
*/
public void run() {
String message;
Pipeline hispipe = null;
// Create a pipeline to connect to our message parser.
hispipe =
new Pipeline(myClientInputStream, stack.readTimeout, ((SIPTransactionStack) stack).timer);
// Create a pipelined message parser to read and parse
// messages that we write out to him.
myParser = new PipelinedMsgParser(this, hispipe, this.stack.getMaxMessageSize());
// Start running the parser thread.
myParser.processInput();
// bug fix by Emmanuel Proulx
int bufferSize = 4096;
this.tlsMessageProcessor.useCount++;
this.isRunning = true;
try {
while (true) {
try {
byte[] msg = new byte[bufferSize];
int nbytes = myClientInputStream.read(msg, 0, bufferSize);
// no more bytes to read...
if (nbytes == -1) {
hispipe.write("\r\n\r\n".getBytes("UTF-8"));
try {
if (stack.maxConnections != -1) {
synchronized (tlsMessageProcessor) {
tlsMessageProcessor.nConnections--;
tlsMessageProcessor.notify();
}
}
hispipe.close();
mySock.close();
} catch (IOException ioex) {
}
return;
}
hispipe.write(msg, 0, nbytes);
} catch (IOException ex) {
// Terminate the message.
try {
hispipe.write("\r\n\r\n".getBytes("UTF-8"));
} catch (Exception e) {
// InternalErrorHandler.handleException(e);
}
try {
if (LogWriter.needsLogging)
stack.logWriter.logMessage("IOException closing sock " + ex);
try {
if (stack.maxConnections != -1) {
synchronized (tlsMessageProcessor) {
tlsMessageProcessor.nConnections--;
tlsMessageProcessor.notify();
}
}
mySock.close();
hispipe.close();
} catch (IOException ioex) {
}
} catch (Exception ex1) {
// Do nothing.
}
return;
} catch (Exception ex) {
InternalErrorHandler.handleException(ex);
}
}
} finally {
this.isRunning = false;
this.tlsMessageProcessor.remove(this);
this.tlsMessageProcessor.useCount--;
}
}
/**
* This is input reading thread for the pipelined parser. You feed it input through the input
* stream (see the constructor) and it calls back an event listener interface for message
* processing or error. It cleans up the input - dealing with things like line continuation
*/
public void run() {
Pipeline inputStream = this.rawInputStream;
// inputStream = new MyFilterInputStream(this.rawInputStream);
// I cannot use buffered reader here because we may need to switch
// encodings to read the message body.
try {
while (true) {
this.sizeCounter = this.maxMessageSize;
// this.messageSize = 0;
StringBuffer inputBuffer = new StringBuffer();
if (Debug.parserDebug) Debug.println("Starting parse!");
String line1;
String line2 = null;
while (true) {
try {
line1 = readLine(inputStream);
// ignore blank lines.
if (line1.equals("\n")) {
if (Debug.parserDebug) Debug.println("Discarding " + line1);
continue;
} else break;
} catch (IOException ex) {
Debug.printStackTrace(ex);
this.rawInputStream.stopTimer();
return;
}
}
inputBuffer.append(line1);
// Guard against bad guys.
this.rawInputStream.startTimer();
while (true) {
try {
line2 = readLine(inputStream);
inputBuffer.append(line2);
if (line2.trim().equals("")) break;
} catch (IOException ex) {
this.rawInputStream.stopTimer();
Debug.printStackTrace(ex);
return;
}
}
// Stop the timer that will kill the read.
this.rawInputStream.stopTimer();
inputBuffer.append(line2);
StringMsgParser smp = new StringMsgParser(sipMessageListener);
smp.readBody = false;
SIPMessage sipMessage = null;
try {
sipMessage = smp.parseSIPMessage(inputBuffer.toString());
if (sipMessage == null) {
this.rawInputStream.stopTimer();
continue;
}
} catch (ParseException ex) {
// Just ignore the parse exception.
continue;
}
if (Debug.parserDebug) Debug.println("Completed parsing message");
ContentLength cl = (ContentLength) sipMessage.getContentLength();
int contentLength = 0;
if (cl != null) {
contentLength = cl.getContentLength();
} else {
contentLength = 0;
}
if (Debug.parserDebug) {
Debug.println("contentLength " + contentLength);
Debug.println("sizeCounter " + this.sizeCounter);
Debug.println("maxMessageSize " + this.maxMessageSize);
}
if (contentLength == 0) {
sipMessage.removeContent();
} else if (maxMessageSize == 0 || contentLength < this.sizeCounter) {
byte[] message_body = new byte[contentLength];
int nread = 0;
while (nread < contentLength) {
// Start my starvation timer.
// This ensures that the other end
// writes at least some data in
// or we will close the pipe from
// him. This prevents DOS attack
// that takes up all our connections.
this.rawInputStream.startTimer();
try {
int readlength = inputStream.read(message_body, nread, contentLength - nread);
if (readlength > 0) {
nread += readlength;
} else {
break;
}
} catch (IOException ex) {
ex.printStackTrace();
break;
} finally {
// Stop my starvation timer.
this.rawInputStream.stopTimer();
}
}
sipMessage.setMessageContent(message_body);
}
// Content length too large - process the message and
// return error from there.
if (sipMessageListener != null) {
try {
sipMessageListener.processMessage(sipMessage);
} catch (Exception ex) {
// fatal error in processing - close the
// connection.
break;
}
}
}
} finally {
try {
inputStream.close();
} catch (IOException e) {
InternalErrorHandler.handleException(e);
}
}
}
/**
* Gets invoked by the parser as a callback on successful message parsing (i.e. no parser errors).
*
* @param sipMessage Mesage to process (this calls the application for processing the message).
*/
public void processMessage(SIPMessage sipMessage) throws Exception {
try {
if (sipMessage.getFrom() == null
|| // sipMessage.getFrom().getTag() == null ||
sipMessage.getTo() == null
|| sipMessage.getCallId() == null
|| sipMessage.getCSeq() == null
|| sipMessage.getViaHeaders() == null) {
String badmsg = sipMessage.encode();
if (LogWriter.needsLogging) {
stack.logWriter.logMessage("bad message " + badmsg);
stack.logWriter.logMessage(">>> Dropped Bad Msg");
}
stack.logBadMessage(badmsg);
return;
}
ViaList viaList = sipMessage.getViaHeaders();
// For a request
// first via header tells where the message is coming from.
// For response, this has already been recorded in the outgoing
// message.
if (sipMessage instanceof SIPRequest) {
Via v = (Via) viaList.first();
if (v.hasPort()) {
this.peerPort = v.getPort();
} else this.peerPort = 5061;
this.peerProtocol = v.getTransport();
try {
this.peerAddress = mySock.getInetAddress();
// Check to see if the received parameter matches
// the peer address and tag it appropriately.
// Bug fix by [email protected]
// Should record host address not host name
// bug fix by Joost Yervante Damand
if (!v.getSentBy().getInetAddress().equals(this.peerAddress)) {
v.setParameter(Via.RECEIVED, this.peerAddress.getHostAddress());
// @@@ hagai
v.setParameter(Via.RPORT, new Integer(this.peerPort).toString());
}
} catch (java.net.UnknownHostException ex) {
// Could not resolve the sender address.
if (LogWriter.needsLogging) {
stack.logWriter.logMessage("Rejecting message -- could not resolve Via Address");
}
return;
} catch (java.text.ParseException ex) {
InternalErrorHandler.handleException(ex);
}
// Use this for outgoing messages as well.
if (!this.isCached) {
((TLSMessageProcessor) this.messageProcessor).cacheMessageChannel(this);
this.isCached = true;
String key = IOHandler.makeKey(mySock.getInetAddress(), this.peerPort);
stack.ioHandler.putSocket(key, mySock);
}
}
// Foreach part of the request header, fetch it and process it
long receptionTime = System.currentTimeMillis();
//
if (sipMessage instanceof SIPRequest) {
// This is a request - process the request.
SIPRequest sipRequest = (SIPRequest) sipMessage;
// Create a new sever side request processor for this
// message and let it handle the rest.
if (LogWriter.needsLogging) {
stack.logWriter.logMessage("----Processing Message---");
}
// Check for reasonable size - reject message
// if it is too long.
if (stack.getMaxMessageSize() > 0
&& sipRequest.getSize()
+ (sipRequest.getContentLength() == null
? 0
: sipRequest.getContentLength().getContentLength())
> stack.getMaxMessageSize()) {
SIPResponse sipResponse = sipRequest.createResponse(SIPResponse.MESSAGE_TOO_LARGE);
byte[] resp = sipResponse.encodeAsBytes();
this.sendMessage(resp, false);
throw new Exception("Message size exceeded");
}
ServerRequestInterface sipServerRequest = stack.newSIPServerRequest(sipRequest, this);
sipServerRequest.processRequest(sipRequest, this);
if (this.stack.serverLog.needsLogging(ServerLog.TRACE_MESSAGES)) {
if (sipServerRequest.getProcessingInfo() == null) {
stack.serverLog.logMessage(
sipMessage,
sipRequest.getViaHost() + ":" + sipRequest.getViaPort(),
stack.getHostAddress() + ":" + stack.getPort(this.getTransport()),
false,
receptionTime);
} else {
this.stack.serverLog.logMessage(
sipMessage,
sipRequest.getViaHost() + ":" + sipRequest.getViaPort(),
stack.getHostAddress() + ":" + stack.getPort(this.getTransport()),
sipServerRequest.getProcessingInfo(),
false,
receptionTime);
}
}
} else {
SIPResponse sipResponse = (SIPResponse) sipMessage;
// This is a response message - process it.
// Check the size of the response.
// If it is too large dump it silently.
if (stack.getMaxMessageSize() > 0
&& sipResponse.getSize()
+ (sipResponse.getContentLength() == null
? 0
: sipResponse.getContentLength().getContentLength())
> stack.getMaxMessageSize()) {
if (LogWriter.needsLogging) this.stack.logWriter.logMessage("Message size exceeded");
return;
}
ServerResponseInterface sipServerResponse = stack.newSIPServerResponse(sipResponse, this);
sipServerResponse.processResponse(sipResponse, this);
}
} finally {
}
}