/**
   * 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);
  }
Exemple #11
0
  /**
   * 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();
 }