/** Called by the sax parser when the end of an element is encountered. */
public void endElement(String namespaceURI, String local, String name) throws SAXException {
if (name.equals(TagNames.CALLFLOW)) {
// Do an integrity check.
// For every Expect node, there must be
// a valid event template.
try {
callFlow.checkIntegrity();
} catch (Exception ex) {
System.out.println(ex.getMessage());
ex.printStackTrace();
throw new SAXException(ex.getMessage());
}
} else if (name.equals(TagNames.JYTHON_CODE)) {
if (this.jythonCode != null) {
JythonInterp jythonInterp = callFlow.getJythonInterp();
try {
jythonInterp.exec(this.jythonCode);
} catch (PyException ex) {
throw new SAXException(
"error in evalScript \n" + this.jythonCode + "\n" + ex.getMessage());
}
this.jythonCode = null;
}
} else if (name.equals(TagNames.EXPECT)) {
if (this.jythonCode != null) currentExpectNode.setJythonCode(this.jythonCode);
this.jythonCode = null;
callFlow.addExpectNode(currentExpectNode);
currentExpectNode = null;
} else if (name.equals(TagNames.SIP_REQUEST)) {
if (this.messageTemplateContext) {
MessageTemplate msgTemplate = new MessageTemplate(messageTemplate, id, this.jythonCode);
callFlow.addMessageTemplate(msgTemplate);
messageTemplate = null;
this.jythonCode = null;
}
} else if (name.equals(TagNames.SIP_RESPONSE)) {
if (this.messageTemplateContext) {
MessageTemplate msgTemplate =
new MessageTemplate(this.messageTemplate, this.id, this.jythonCode);
callFlow.addMessageTemplate(msgTemplate);
messageTemplate = null;
this.jythonCode = null;
}
} else if (name.equals(TagNames.GENERATE)) {
generateContext = false;
if (generatedMessage.messageType.equals(Attr.SipRequest) && generatedMessage.method == null) {
System.out.println("Current message node = " + generatedMessage.messageId);
throw new SAXException("Missing method");
}
} else if (name.equals(TagNames.MESSAGE_TEMPLATES)) {
messageTemplateContext = false;
}
}
/** Constructor. */
protected XMLContentHandler(String eventFile, String agentFile) {
myEngine = EventEngine.theStack;
agentTable = new Hashtable();
try {
XMLReader saxParser =
(XMLReader) Class.forName("org.apache.xerces.parsers.SAXParser").newInstance();
saxParser.setContentHandler(this);
saxParser.setFeature("http://xml.org/sax/features/validation", true);
// parse the xml specification for the event tags.
saxParser.parse(agentFile);
saxParser.parse(eventFile);
} catch (SAXParseException spe) {
// Error generated by the parser
System.out.println(
"\n** Parsing error" + ", line " + spe.getLineNumber() + ", uri " + spe.getSystemId());
System.out.println(" " + spe.getMessage());
// Use the contained exception, if any
Exception x = spe;
if (spe.getException() != null) x = spe.getException();
x.printStackTrace();
System.exit(0);
} catch (SAXException sxe) {
// Error generated by this application
// (or a parser-initialization error)
Exception x = sxe;
if (sxe.getException() != null) x = sxe.getException();
x.printStackTrace();
System.exit(0);
} catch (IOException ioe) {
// I/O error
ioe.printStackTrace();
System.exit(0);
} catch (Exception pce) {
// Parser with specified options can't be built
pce.printStackTrace();
System.exit(0);
}
}
/** 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());
}
}