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package com.sun.web.server;
import java.util.*;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.AccessControlException;
import java.security.Policy;
import java.security.ProtectionDomain;
import java.security.Principal;
import javax.security.auth.Subject;
import javax.transaction.Transaction;
import javax.servlet.Servlet;
import javax.servlet.ServletRequest; // IASRI 4713234
import javax.servlet.ServletRequestWrapper;
import javax.servlet.http.HttpServletRequest;
import org.apache.catalina.Realm;
import org.apache.catalina.InstanceEvent;
import org.apache.catalina.InstanceListener;
import org.apache.catalina.Context;
import org.apache.catalina.Wrapper;
import org.apache.jasper.servlet.JspServlet;
import org.apache.catalina.servlets.DefaultServlet;
import org.apache.coyote.tomcat5.CoyoteRequestFacade;
import com.sun.enterprise.*;
import com.sun.enterprise.deployment.*;
import com.sun.enterprise.appverification.factory.AppVerification;
import com.sun.enterprise.security.LoginContext;
import com.sun.enterprise.security.SecurityContext; // IASRI 4688449
import com.sun.enterprise.log.Log;
import com.sun.web.security.RealmAdapter;
import com.sun.web.security.WebPrincipal;
//START OF IASRI 4660742
import java.util.logging.*;
import com.sun.logging.*;
//END OF IASRI 4660742
/**
* This class implements the Tomcat InstanceListener interface and
* handles the INIT,DESTROY and SERVICE, FILTER events.
* @author Vivek Nagar
* @author Tony Ng
*/
public final class J2EEInstanceListener implements InstanceListener {
// START OF IASRI 4660742
static Logger _logger=LogDomains.getLogger(LogDomains.WEB_LOGGER);
// END OF IASRI 4660742
private static final HashSet beforeEvents = new HashSet(4);
private static final HashSet afterEvents = new HashSet(4);
static {
beforeEvents.add(InstanceEvent.BEFORE_SERVICE_EVENT);
beforeEvents.add(InstanceEvent.BEFORE_FILTER_EVENT);
beforeEvents.add(InstanceEvent.BEFORE_INIT_EVENT);
beforeEvents.add(InstanceEvent.BEFORE_DESTROY_EVENT);
afterEvents.add(InstanceEvent.AFTER_SERVICE_EVENT);
afterEvents.add(InstanceEvent.AFTER_FILTER_EVENT);
afterEvents.add(InstanceEvent.AFTER_INIT_EVENT);
afterEvents.add(InstanceEvent.AFTER_DESTROY_EVENT);
}
private InvocationManager im;
private J2EETransactionManager tm;
private InjectionManager injectionMgr;
// private LoginContext lc = null;
public J2EEInstanceListener() {
im = Switch.getSwitch().getInvocationManager();
tm = Switch.getSwitch().getTransactionManager();
injectionMgr = Switch.getSwitch().getInjectionManager();
// lc = new LoginContext();
}
public void instanceEvent(InstanceEvent event) {
String eventType = event.getType();
if(_logger.isLoggable(Level.FINEST)) {
_logger.log(Level.FINEST,"*** InstanceEvent: " + eventType);
}
if (beforeEvents.contains(eventType)) {
handleBeforeEvent(event, eventType);
} else if (afterEvents.contains(eventType)) {
handleAfterEvent(event, eventType);
}
}
private void handleBeforeEvent(InstanceEvent event, String eventType) {
Object instance = null;
if (eventType.equals(InstanceEvent.BEFORE_FILTER_EVENT)) {
instance = event.getFilter();
} else {
instance = event.getServlet();
}
Context context = (Context) event.getWrapper().getParent();
// set security context
// BEGIN IASRI 4688449
//try {
Realm ra = context.getRealm();
/** IASRI 4713234
if (ra != null) {
HttpServletRequest request =
(HttpServletRequest) event.getRequest();
if (request != null && request.getUserPrincipal() != null) {
WebPrincipal prin =
(WebPrincipal) request.getUserPrincipal();
// ra.authenticate(prin);
// It is inefficient to call authenticate just to set
// sec.ctx. Instead, WebPrincipal modified to keep the
// previously created secctx, and set it here directly.
SecurityContext.setCurrent(prin.getSecurityContext());
}
}
**/
// START OF IASRI 4713234
if (ra != null) {
ServletRequest request =
(ServletRequest) event.getRequest();
if (request != null && request instanceof HttpServletRequest) {
HttpServletRequest hreq = (HttpServletRequest)request;
HttpServletRequest base = hreq;
Principal prin = hreq.getUserPrincipal();
Principal basePrincipal = prin;
boolean wrapped = false;
while (prin != null && base != null) {
if (base instanceof ServletRequestWrapper) {
// unwarp any wrappers to find the base object
ServletRequest sr =
((ServletRequestWrapper) base).getRequest();
if (sr instanceof HttpServletRequest) {
base = (HttpServletRequest) sr;
wrapped = true;
continue;
}
}
if (wrapped) {
basePrincipal = base.getUserPrincipal();
}
else if (base instanceof CoyoteRequestFacade) {
// try to avoid the getUnWrappedCoyoteRequest call
// when we can identify see we have the texact class.
if (base.getClass() != CoyoteRequestFacade.class) {
basePrincipal = ((CoyoteRequestFacade)base).
getUnwrappedCoyoteRequest().getUserPrincipal();
}
} else {
basePrincipal = base.getUserPrincipal();
}
break;
}
if (prin != null && prin == basePrincipal &&
prin instanceof WebPrincipal) {
SecurityContext.setCurrent
(getSecurityContextForPrincipal(prin));
} else if (prin != basePrincipal) {
// the wrapper has overridden getUserPrincipal
// reject the request if the wrapper does not have
// the necessary permission.
checkObjectForDoAsPermission(hreq);
SecurityContext.setCurrent
(getSecurityContextForPrincipal(prin));
}
}
}
// END OF IASRI 4713234
//} catch (Exception ex) {
/** IASRI 4660742
ex.printStackTrace();
**/
// START OF IASRI 4660742
//_logger.log(Level.SEVERE,"web_server.excep_handle_before_event",ex);
// END OF IASRI 4660742
//}
// END IASRI 4688449
ComponentInvocation inv = new ComponentInvocation(instance, context);
try {
im.preInvoke(inv);
if (eventType.equals(InstanceEvent.BEFORE_SERVICE_EVENT)) {
// enlist resources with TM for service method
Transaction tran = null;
if ((tran = tm.getTransaction()) != null) {
inv.setTransaction(tran);
}
tm.enlistComponentResources();
} else if (eventType.equals(InstanceEvent.BEFORE_INIT_EVENT)) {
// Perform any required resource injection on the servlet
// instance. This needs to be done after the invocation of
// preInvoke, but before any of the servlet's application
// code is executed.
JndiNameEnvironment desc = (JndiNameEnvironment)
Switch.getSwitch().getDescriptorFor(context);
// There won't be a corresponding J2EE naming environment
// descriptor for certain internal servlets so just skip
// injection for those ones.
if( desc != null
&& instance.getClass() != DefaultServlet.class
&& instance.getClass() != JspServlet.class) {
injectionMgr.injectInstance(instance, desc);
}
}
} catch (Exception ex) {
throw new RuntimeException(
_logger.getResourceBundle().getString(
"web_server.excep_handle_before_event"),
ex);
}
}
private static javax.security.auth.AuthPermission doAsPrivilegedPerm =
new javax.security.auth.AuthPermission("doAsPrivileged");
private static void checkObjectForDoAsPermission(final Object o)
throws AccessControlException{
if (System.getSecurityManager() != null) {
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
ProtectionDomain pD = o.getClass().getProtectionDomain();
Policy p = Policy.getPolicy();
if (!p.implies(pD,doAsPrivilegedPerm)) {
throw new AccessControlException
("permission required to override getUserPrincipal",
doAsPrivilegedPerm);
}
return null;
}
});
}
}
private static SecurityContext
getSecurityContextForPrincipal(final Principal p) {
if (p == null) {
return null;
} else if (p instanceof WebPrincipal) {
return ((WebPrincipal) p).getSecurityContext();
} else {
return (SecurityContext)
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
Subject s = new Subject();
s.getPrincipals().add(p);
return new SecurityContext(p.getName(),s);
}
});
}
}
private void handleAfterEvent(InstanceEvent event, String eventType) {
if (AppVerification.doInstrument()
&& (eventType.equals(InstanceEvent.AFTER_SERVICE_EVENT)
|| eventType.equals(InstanceEvent.AFTER_INIT_EVENT)
|| eventType.equals(InstanceEvent.AFTER_DISPATCH_EVENT))) {
AppVerification.getInstrumentLogger().doInstrumentForWeb(event);
}
Object instance = null;
if (eventType.equals(InstanceEvent.AFTER_FILTER_EVENT)) {
instance = event.getFilter();
} else {
instance = event.getServlet();
}
Context context = (Context) event.getWrapper().getParent();
ComponentInvocation inv = new ComponentInvocation(instance, context);
try {
im.postInvoke(inv);
} catch (Exception ex) {
throw new RuntimeException(
_logger.getResourceBundle().getString(
"web_server.excep_handle_after_event"),
ex);
} finally {
if (eventType.equals(InstanceEvent.AFTER_DESTROY_EVENT)) {
tm.componentDestroyed(instance);
JndiNameEnvironment desc = (JndiNameEnvironment)
Switch.getSwitch().getDescriptorFor(context);
if (desc != null
&& instance.getClass() != DefaultServlet.class
&& instance.getClass() != JspServlet.class) {
try {
injectionMgr.invokeInstancePreDestroy(instance, desc);
} catch (InjectionException ie) {
_logger.log(Level.SEVERE,
"web_server.excep_handle_after_event",
ie);
}
}
}
if (eventType.equals(InstanceEvent.AFTER_FILTER_EVENT) ||
eventType.equals(InstanceEvent.AFTER_SERVICE_EVENT)) {
// check it's top level invocation
// BEGIN IASRI# 4646060
if (im.getCurrentInvocation() == null) {
// END IASRI# 4646060
try {
// clear security context
Realm ra = context.getRealm();
if (ra != null && (ra instanceof RealmAdapter)) {
((RealmAdapter)ra).logout();
}
} catch (Exception ex) {
/** IASRI 4660742
ex.printStackTrace();
**/
// START OF IASRI 4660742
_logger.log(Level.SEVERE,
"web_server.excep_handle_after_event",
ex);
// END OF IASRI 4660742
}
try {
if (tm.getTransaction() != null) {
tm.rollback();
}
tm.cleanTxnTimeout();
} catch (Exception ex) {}
}
tm.componentDestroyed(instance);
}
}
}
}
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