/**
* Find the transaction corresponding to a given request.
*
* @param sipMessage request for which to retrieve the transaction.
* @param isServer search the server transaction table if true.
* @return the transaction object corresponding to the request or null if no such mapping exists.
*/
public SIPTransaction findTransaction(SIPMessage sipMessage, boolean isServer) {
SIPTransaction retval = null;
if (isServer) {
Via via = sipMessage.getTopmostVia();
if (via.getBranch() != null) {
String key = sipMessage.getTransactionId();
synchronized (this.serverTransactionTable) {
retval = (SIPTransaction) serverTransactionTable.get(key);
if (LogWriter.needsLogging) logMessage("looking for key " + key);
if (retval != null && retval.isMessagePartOfTransaction(sipMessage)) return retval;
}
}
// Need to scan the table for old style transactions (RFC 2543
// style)
synchronized (this.serverTransactions) {
Iterator<SIPServerTransaction> it = serverTransactions.iterator();
while (it.hasNext()) {
SIPServerTransaction sipServerTransaction = (SIPServerTransaction) it.next();
if (sipServerTransaction.isMessagePartOfTransaction(sipMessage))
return sipServerTransaction;
}
}
} else {
Via via = sipMessage.getTopmostVia();
if (via.getBranch() != null) {
String key = sipMessage.getTransactionId();
synchronized (this.clientTransactionTable) {
retval = (SIPTransaction) clientTransactionTable.get(key);
if (retval != null && retval.isMessagePartOfTransaction(sipMessage)) return retval;
}
}
// Need to scan the table for old style transactions (RFC 2543
// style)
synchronized (this.clientTransactions) {
Iterator<SIPClientTransaction> it = clientTransactions.iterator();
while (it.hasNext()) {
SIPClientTransaction clientTransaction = (SIPClientTransaction) it.next();
if (clientTransaction.isMessagePartOfTransaction(sipMessage)) return clientTransaction;
}
}
}
return null;
}
/**
* Return a formatted message to the client. We try to re-connect with the peer on the other end
* if possible.
*
* @param sipMessage Message to send.
* @throws IOException If there is an error sending the message
*/
public void sendMessage(SIPMessage sipMessage) throws IOException {
byte[] msg = sipMessage.encodeAsBytes();
long time = System.currentTimeMillis();
this.sendMessage(msg, sipMessage instanceof SIPRequest);
if (this.stack.serverLog.needsLogging(ServerLog.TRACE_MESSAGES))
logMessage(sipMessage, peerAddress, peerPort, time);
}
/**
* Encode the message except for the body.
*
* @return The string except for the body.
*/
public StringBuilder encodeMessage(StringBuilder retval) {
// String retval;
if (statusLine != null) {
statusLine.encode(retval);
super.encodeSIPHeaders(retval);
} else {
retval = super.encodeSIPHeaders(retval);
}
return retval;
}
/**
* 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.logStackTraceOnMessageSend) {
if (sipMessage instanceof SIPRequest && ((SIPRequest) sipMessage).getRequestLine() != null) {
/*
* We dont want to log empty trace messages.
*/
this.sipStack.logWriter.logStackTrace(LogWriter.TRACE_MESSAGES);
} else {
this.sipStack.logWriter.logStackTrace(LogWriter.TRACE_MESSAGES);
}
}
// 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);
sipStack.logWriter.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.logWriter.logError("An exception occured while sending message", ex);
throw new IOException("An exception occured while sending message");
} finally {
if (sipStack.logWriter.isLoggingEnabled(ServerLog.TRACE_MESSAGES))
logMessage(sipMessage, peerAddress, peerPort, time);
}
}
/**
* Exception processor for exceptions detected from the parser. (This is invoked by the parser
* when an error is detected).
*
* @param sipMessage -- the message that incurred the error.
* @param ex -- parse exception detected by the parser.
* @param header -- header that caused the error.
* @throws ParseException Thrown if we want to reject the message.
*/
public void handleException(
ParseException ex, SIPMessage sipMessage, Class hdrClass, String header, String message)
throws ParseException {
if (LogWriter.needsLogging) stack.logWriter.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))) {
stack.logBadMessage(message);
throw ex;
} else {
sipMessage.addUnparsed(header);
}
}
/**
* 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.logWriter.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))) {
sipStack.logWriter.logError("BAD MESSAGE!");
sipStack.logWriter.logError(message);
throw ex;
} else {
sipMessage.addUnparsed(header);
}
}
/**
* 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 {
}
}
/** Called by the sax parser when the start of an element is encountered. */
public void startElement(String nameSpaceURI, String local, String name, Attributes attrs)
throws SAXException {
try {
Debug.println("processing " + name);
if (name.compareTo(TagNames.CALLFLOW) == 0) {
callFlow = new CallFlow();
callFlow.instantiateOn = attrs.getValue(Attr.instantiateOn);
callFlow.description = attrs.getValue(Attr.description);
} else if (name.compareTo(TagNames.AGENT) == 0) {
Agent agent = new Agent();
agent.agentId = attrs.getValue(Attr.agentId);
agent.userName = attrs.getValue(Attr.userName);
agent.requestURI = attrs.getValue(Attr.requestURI);
agent.host = attrs.getValue(Attr.host);
agent.contactPort = attrs.getValue(Attr.contactPort);
agent.contactHost = attrs.getValue(Attr.contactHost);
addAgent(agent);
} else if (name.compareTo(TagNames.EXPECT) == 0) {
// Make sure there are no unexpected attributes.
for (int i = 0; i < attrs.getLength(); i++) {
String attrname = attrs.getLocalName(i);
if (attrname.equals(Attr.enablingEvent)
|| attrname.equals(Attr.triggerMessage)
|| attrname.equals(Attr.generatedEvent)
|| attrname.equals(Attr.nodeId)
|| attrname.equals(Attr.onTrigger)
|| attrname.equals(Attr.onCompletion)) continue;
else
throw new SAXException(
"Unkown attribute in expect: nodeId = "
+ attrs.getValue(Attr.nodeId)
+ " attribute name = "
+ attrname);
}
String enablingEvent = attrs.getValue(Attr.enablingEvent);
String triggerMessage = attrs.getValue(Attr.triggerMessage);
String generatedEvent = attrs.getValue(Attr.generatedEvent);
String nodeId = attrs.getValue(Attr.nodeId);
currentExpectNode = new Expect(callFlow, enablingEvent, generatedEvent, triggerMessage);
String onTrigger = attrs.getValue(Attr.onTrigger);
String onCompletion = attrs.getValue(Attr.onCompletion);
currentExpectNode.onTrigger = onTrigger;
currentExpectNode.onCompletion = onCompletion;
currentExpectNode.nodeId = nodeId;
} else if (name.compareTo(TagNames.SIP_REQUEST) == 0) {
if (this.messageTemplateContext) {
// This is a SIPRequest template node.
for (int i = 0; i < attrs.getLength(); i++) {
String attrname = attrs.getLocalName(i);
if (!attrs.getLocalName(i).equals(Attr.templateId))
throw new SAXException(
"Unkown attribute in SIP_REQUEST node " + " attribute name = " + attrname);
}
messageTemplate = new SIPRequest();
id = attrs.getValue(Attr.templateId);
jythonCode = null;
}
} else if (name.compareTo(TagNames.SIP_RESPONSE) == 0) {
if (this.messageTemplateContext) {
messageTemplate = new SIPResponse();
jythonCode = null;
for (int i = 0; i < attrs.getLength(); i++) {
String attrname = attrs.getLocalName(i);
if (!attrs.getLocalName(i).equals(Attr.templateId))
throw new SAXException(
"Unkown attribute in SIP_REQUEST node " + " attribute name = " + attrname);
}
id = attrs.getValue(Attr.templateId);
}
} else if (name.compareTo(TagNames.STATUS_LINE) == 0) {
String scode = attrs.getValue(Attr.statusCode);
if (messageTemplateContext) {
StatusLine statusLine = new StatusLine();
try {
int statusCode = Integer.parseInt(scode);
statusLine.setStatusCode(statusCode);
} catch (NumberFormatException ex) {
throw new SAXException(ex.getMessage());
}
SIPResponse response = (SIPResponse) this.messageTemplate;
response.setStatusLine(statusLine);
} else {
int statusCode = Integer.parseInt(scode);
generatedMessage.addStatusLine(statusCode);
}
} else if (name.compareTo(TagNames.REQUEST_LINE) == 0) {
String method = attrs.getValue(Attr.method);
Debug.println("tagname = " + TagNames.REQUEST_LINE);
Debug.println("messageTemplateContext = " + messageTemplateContext);
if (messageTemplateContext) {
for (int i = 0; i < attrs.getLength(); i++) {
String attrname = attrs.getLocalName(i);
if (attrs.getLocalName(i).equals(Attr.requestURI)
|| attrs.getLocalName(i).equals(Attr.method)) continue;
else
throw new SAXException(
"Unkown attribute in REQUEST_LINE node " + " attribute name = " + attrname);
}
requestLine = new RequestLine();
requestLine.setMethod(method);
String requestURI = attrs.getValue(Attr.requestURI);
StringMsgParser smp = new StringMsgParser();
if (requestURI != null) {
try {
URI uri = smp.parseSIPUrl(requestURI);
requestLine.setUri(uri);
} catch (SIPParseException e) {
throw new SAXException("Bad URL " + requestURI);
}
}
SIPRequest request = (SIPRequest) messageTemplate;
request.setRequestLine(requestLine);
} else {
for (int i = 0; i < attrs.getLength(); i++) {
String attrname = attrs.getLocalName(i);
if (attrs.getLocalName(i).equals(Attr.method)
|| attrs.getLocalName(i).equals(Attr.templateId)
|| attrs.getLocalName(i).equals(Attr.agentId)) continue;
else
throw new SAXException(
"Unkown attribute in REQUEST_LINE node " + " attribute name = " + attrname);
}
String requestURI = attrs.getValue(Attr.requestURI);
if (requestURI == null) {
String agentId = attrs.getValue(Attr.agentId);
if (agentId != null) {
Agent agent = getAgent(agentId);
if (agent == null) throw new SAXException("Missing requestURI or agent attribute");
requestURI = agent.requestURI;
}
}
generatedMessage.addRequestLine(method, requestURI);
}
} else if (name.compareTo(TagNames.FROM) == 0) {
for (int i = 0; i < attrs.getLength(); i++) {
String attrname = attrs.getLocalName(i);
if (attrs.getLocalName(i).equals(Attr.displayName)
|| attrs.getLocalName(i).equals(Attr.userName)
|| attrs.getLocalName(i).equals(Attr.host)
|| attrs.getLocalName(i).equals(Attr.agentId)) continue;
else
throw new SAXException(
"Unkown attribute in FROM node " + " attribute name = " + attrname);
}
String displayName = attrs.getValue(Attr.displayName);
String userName = attrs.getValue(Attr.userName);
String hostName = attrs.getValue(Attr.host);
String agentId = attrs.getValue(Attr.agentId);
if (agentId != null) {
Agent agent = getAgent(agentId);
if (agent == null) throw new SAXException("agent not found " + agentId);
if (displayName == null) displayName = agent.displayName;
if (userName == null) userName = agent.userName;
if (hostName == null) hostName = agent.host;
}
if (this.messageTemplateContext) {
From from = new From();
Address address = new Address();
address.setDisplayName(displayName);
URI uri = new URI();
Host host = new Host();
host.setHostname(hostName);
uri.setHost(host);
uri.setUser(userName);
address.setAddrSpec(uri);
from.setAddress(address);
try {
messageTemplate.attachHeader(from, false);
} catch (SIPDuplicateHeaderException ex) {
throw new SAXException(ex.getMessage());
}
} else {
generatedMessage.addFromHeader(displayName, userName, hostName);
}
} else if (name.compareTo(TagNames.TO) == 0) {
for (int i = 0; i < attrs.getLength(); i++) {
String attrname = attrs.getLocalName(i);
if (attrs.getLocalName(i).equals(Attr.templateId)
|| attrs.getLocalName(i).equals(Attr.host)
|| attrs.getLocalName(i).equals(Attr.agentId)
|| attrs.getLocalName(i).equals(Attr.userName)) continue;
else
throw new SAXException(
"Unkown attribute in FROM node " + " attribute name = " + attrname);
}
String displayName = attrs.getValue(Attr.displayName);
String userName = attrs.getValue(Attr.userName);
String hostName = attrs.getValue(Attr.host);
String agentId = attrs.getValue(Attr.agentId);
if (agentId != null) {
Agent agent = getAgent(agentId);
if (agent == null) throw new SAXException("agent not found " + agentId);
if (displayName == null) displayName = agent.displayName;
if (userName == null) userName = agent.userName;
if (hostName == null) hostName = agent.host;
}
if (this.messageTemplateContext) {
To to = new To();
Address address = new Address();
address.setDisplayName(displayName);
URI uri = new URI();
Host host = new Host();
host.setHostname(hostName);
uri.setHost(host);
uri.setUser(userName);
address.setAddrSpec(uri);
to.setAddress(address);
try {
messageTemplate.attachHeader(to, false);
} catch (SIPDuplicateHeaderException ex) {
throw new SAXException(ex.getMessage());
}
} else {
generatedMessage.addToHeader(displayName, userName, hostName);
}
} else if (name.compareTo(TagNames.CALLID) == 0) {
String lid = attrs.getValue(Attr.localId);
String host = attrs.getValue(Attr.host);
if (this.messageTemplateContext) {
CallID cid = new CallID();
CallIdentifier cidf = new CallIdentifier(lid, host);
cid.setCallIdentifier(cidf);
} else {
generatedMessage.addCallIdHeader();
}
} else if (name.compareTo(TagNames.CONTACT) == 0) {
for (int i = 0; i < attrs.getLength(); i++) {
String attrname = attrs.getLocalName(i);
if (attrs.getLocalName(i).equals(Attr.displayName)
|| attrs.getLocalName(i).equals(Attr.userName)
|| attrs.getLocalName(i).equals(Attr.action)
|| attrs.getLocalName(i).equals(Attr.contactHost)
|| attrs.getLocalName(i).equals(Attr.contactPort)
|| attrs.getLocalName(i).equals(Attr.agentId)
|| attrs.getLocalName(i).equals(Attr.expires)) continue;
else
throw new SAXException(
"Unkown attribute in CONTACT node " + " attribute name = " + attrname);
}
String displayName = attrs.getValue(Attr.displayName);
String userName = attrs.getValue(Attr.userName);
String hostName = attrs.getValue(Attr.contactHost);
String portString = attrs.getValue(Attr.contactPort);
String expiryTimeString = attrs.getValue(Attr.expires);
String action = attrs.getValue(Attr.action);
String agentId = attrs.getValue(Attr.agentId);
if (action == null) action = "proxy";
if (agentId != null) {
Agent agent = getAgent(agentId);
if (displayName == null) displayName = agent.displayName;
if (userName == null) userName = agent.userName;
if (hostName == null) hostName = agent.contactHost;
if (portString == null) portString = agent.contactPort;
}
if (this.messageTemplateContext) {
// Generating a message template for the expires header.
ContactList clist = new ContactList();
Contact contact = new Contact();
clist.add(contact);
URI uri = new URI();
Host host = new Host();
host.setHostname(hostName);
uri.setHost(host);
uri.setUser(userName);
if (portString != null) {
int port = new Integer(portString).intValue();
uri.setPort(port);
}
Address address = new Address();
address.setAddrSpec(uri);
contact.setAddress(address);
if (expiryTimeString != null) {
long expiryTimeSec = new Long(expiryTimeString).longValue();
contact.setExpires(expiryTimeSec);
}
messageTemplate.attachHeader(clist, false);
} else {
int port = 5060;
if (portString != null) port = new Integer(portString).intValue();
long expiryTimeSec = 3600;
if (expiryTimeString != null) {
expiryTimeSec = new Long(expiryTimeString).longValue();
}
if (userName == null) throw new Exception("Missing attribute userName");
if (action == null) action = Attr.proxy;
String uri;
if (hostName == null) {
uri =
SIPKeywords.SIP
+ Separators.COLON
+ userName
+ Separators.AT
+ EventEngine.theStack.getHostAddress()
+ Separators.COLON
+ EventEngine.theStack.getDefaultPort()
+ Separators.SEMICOLON
+ SIPKeywords.TRANSPORT
+ Separators.EQUALS
+ EventEngine.theStack.getDefaultTransport();
} else
uri =
SIPKeywords.SIP
+ Separators.COLON
+ userName
+ Separators.AT
+ hostName
+ ":"
+ port;
generatedMessage.addContactHeader(displayName, uri, expiryTimeSec, action);
}
} else if (name.compareTo(TagNames.GENERATE) == 0) {
generateContext = true;
if (currentExpectNode == null) {
throw new SAXException("Bad element nesting.");
}
String id = attrs.getValue(Attr.messageId);
String retransmit = attrs.getValue(Attr.retransmit);
String delayString = attrs.getValue(Attr.delay);
int delay = 0;
if (delayString != null) {
try {
delay = Integer.parseInt(delayString);
} catch (NumberFormatException ex) {
throw new SAXException("Bad integer value " + delayString);
}
}
generatedMessage = new GeneratedMessage(id, callFlow, currentExpectNode, retransmit);
generatedMessage.delay = delay;
currentExpectNode.addGeneratedMessage(generatedMessage);
} else if (name.compareTo(TagNames.MESSAGE_TEMPLATES) == 0) {
messageTemplateContext = true;
} else if (name.compareTo(TagNames.JYTHON_CODE) == 0) {
this.jythonCode = null;
} else if (name.compareTo(TagNames.STATE_MACHINE) == 0) {
} else if (name.compareTo(TagNames.AGENTS) == 0) {
} else {
throw new SAXException("Unkown tag " + name);
}
} catch (Exception ex) {
ex.printStackTrace();
ex.fillInStackTrace();
throw new SAXException(ex.getMessage());
}
}
/**
* 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);
}
/**
* Logs the specified message and details to the packet logging service if enabled.
*
* @param message the message to log
* @param sender determines whether we are the origin of this message.
*/
private void logPacket(SIPMessage message, boolean sender) {
try {
PacketLoggingService packetLogging = SipActivator.getPacketLogging();
if (packetLogging == null
|| !packetLogging.isLoggingEnabled(PacketLoggingService.ProtocolName.SIP)
/* Via not present in CRLF packet on TCP - causes NPE */
|| message.getTopmostVia() == null) return;
String transport = message.getTopmostVia().getTransport();
boolean isTransportUDP = transport.equalsIgnoreCase("UDP");
byte[] srcAddr;
int srcPort;
byte[] dstAddr;
int dstPort;
// if addresses are not set use empty byte array with length
// equals to the other address or just empty
// byte array with length 4 (ipv4 0.0.0.0)
if (sender) {
if (!isTransportUDP) {
InetSocketAddress localAddress =
getLocalAddressForDestination(
message.getRemoteAddress(),
message.getRemotePort(),
message.getLocalAddress(),
transport);
srcPort = localAddress.getPort();
srcAddr = localAddress.getAddress().getAddress();
} else {
srcPort = message.getLocalPort();
if (message.getLocalAddress() != null) srcAddr = message.getLocalAddress().getAddress();
else if (message.getRemoteAddress() != null)
srcAddr = new byte[message.getRemoteAddress().getAddress().length];
else srcAddr = new byte[4];
}
dstPort = message.getRemotePort();
if (message.getRemoteAddress() != null) dstAddr = message.getRemoteAddress().getAddress();
else dstAddr = new byte[srcAddr.length];
} else {
if (!isTransportUDP) {
InetSocketAddress dstAddress =
getLocalAddressForDestination(
message.getRemoteAddress(),
message.getRemotePort(),
message.getLocalAddress(),
transport);
dstPort = dstAddress.getPort();
dstAddr = dstAddress.getAddress().getAddress();
} else {
dstPort = message.getLocalPort();
if (message.getLocalAddress() != null) dstAddr = message.getLocalAddress().getAddress();
else if (message.getRemoteAddress() != null)
dstAddr = new byte[message.getRemoteAddress().getAddress().length];
else dstAddr = new byte[4];
}
srcPort = message.getRemotePort();
if (message.getRemoteAddress() != null) srcAddr = message.getRemoteAddress().getAddress();
else srcAddr = new byte[dstAddr.length];
}
byte[] msg = null;
if (message instanceof SIPRequest) {
SIPRequest req = (SIPRequest) message;
if (req.getMethod().equals(SIPRequest.MESSAGE)
&& message.getContentTypeHeader() != null
&& message.getContentTypeHeader().getContentType().equalsIgnoreCase("text")) {
int len = req.getContentLength().getContentLength();
if (len > 0) {
SIPRequest newReq = (SIPRequest) req.clone();
byte[] newContent = new byte[len];
Arrays.fill(newContent, (byte) '.');
newReq.setMessageContent(newContent);
msg = newReq.toString().getBytes("UTF-8");
}
}
}
if (msg == null) {
msg = message.toString().getBytes("UTF-8");
}
packetLogging.logPacket(
PacketLoggingService.ProtocolName.SIP,
srcAddr,
srcPort,
dstAddr,
dstPort,
isTransportUDP
? PacketLoggingService.TransportName.UDP
: PacketLoggingService.TransportName.TCP,
sender,
msg);
} catch (Throwable e) {
logger.error("Cannot obtain message body", e);
}
}
@Override
public void cleanUp() {
// statusLine = null;
super.cleanUp();
}
