Examples of org.apache.tomcat.util.security.PrivilegedSetTccl

org.apache.tomcat.util.security.PrivilegedSetTccl

        }
        ClassLoader newCL = context.getLoader().getClassLoader();


        try {
            if (Globals.IS_SECURITY_ENABLED) {
                PrivilegedAction<Void> pa = new PrivilegedSetTccl(newCL);
                AccessController.doPrivileged(pa);
            } else {
                Thread.currentThread().setContextClassLoader(newCL);
            }
            for (AsyncListenerWrapper listener : listenersCopy) {
                try {
                    listener.fireOnComplete(event);
                } catch (Throwable t) {
                    ExceptionUtils.handleThrowable(t);
                    log.warn("onComplete() failed for listener of type [" +
                            listener.getClass().getName() + "]", t);
                }
            }
        } finally {
            if (Globals.IS_SECURITY_ENABLED) {
                PrivilegedAction<Void> pa = new PrivilegedSetTccl(oldCL);
                AccessController.doPrivileged(pa);
            } else {
                Thread.currentThread().setContextClassLoader(oldCL);
            }
        }

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                oldCL = Thread.currentThread().getContextClassLoader();
            }


            try {
                if (Globals.IS_SECURITY_ENABLED) {
                    PrivilegedAction<Void> pa = new PrivilegedSetTccl(
                            context.getLoader().getClassLoader());
                    AccessController.doPrivileged(pa);
                } else {
                    Thread.currentThread().setContextClassLoader
                            (context.getLoader().getClassLoader());
                }
                wrapped.run();
            } finally {
                if (Globals.IS_SECURITY_ENABLED) {
                    PrivilegedAction<Void> pa = new PrivilegedSetTccl(
                            oldCL);
                    AccessController.doPrivileged(pa);
                } else {
                    Thread.currentThread().setContextClassLoader(oldCL);
                }

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        } else {
            original = Thread.currentThread().getContextClassLoader();
        }
        try {
            if (Constants.IS_SECURITY_ENABLED) {
                PrivilegedSetTccl pa =
                        new PrivilegedSetTccl(JspDocumentParser.class.getClassLoader());
                AccessController.doPrivileged(pa);
            } else {
                Thread.currentThread().setContextClassLoader(
                        JspDocumentParser.class.getClassLoader());
            }


            SAXParserFactory factory = SAXParserFactory.newInstance();


            factory.setNamespaceAware(true);
            // Preserve xmlns attributes
            factory.setFeature(
                "http://xml.org/sax/features/namespace-prefixes",
                true);


            factory.setValidating(validating);
            if (validating) {
                // Enable DTD validation
                factory.setFeature(
                        "http://xml.org/sax/features/validation",
                        true);
                // Enable schema validation
                factory.setFeature(
                        "http://apache.org/xml/features/validation/schema",
                        true);
            }


            // Configure the parser
            SAXParser saxParser = factory.newSAXParser();
            XMLReader xmlReader = saxParser.getXMLReader();
            xmlReader.setProperty(LEXICAL_HANDLER_PROPERTY, jspDocParser);
            xmlReader.setErrorHandler(jspDocParser);


            return saxParser;
        } finally {
            if (Constants.IS_SECURITY_ENABLED) {
                PrivilegedSetTccl pa = new PrivilegedSetTccl(original);
                AccessController.doPrivileged(pa);
            } else {
                Thread.currentThread().setContextClassLoader(original);
            }
        }

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        } else {
            original = Thread.currentThread().getContextClassLoader();
        }
        try {
            if (Globals.IS_SECURITY_ENABLED) {
                PrivilegedSetTccl pa =
                        new PrivilegedSetTccl(DefaultServlet.class.getClassLoader());
                AccessController.doPrivileged(pa);
            } else {
                Thread.currentThread().setContextClassLoader(
                        DefaultServlet.class.getClassLoader());
            }


            TransformerFactory tFactory = TransformerFactory.newInstance();
            Source xmlSource = new StreamSource(new StringReader(sb.toString()));
            Transformer transformer = tFactory.newTransformer(xsltSource);


            ByteArrayOutputStream stream = new ByteArrayOutputStream();
            OutputStreamWriter osWriter = new OutputStreamWriter(stream, "UTF8");
            StreamResult out = new StreamResult(osWriter);
            transformer.transform(xmlSource, out);
            osWriter.flush();
            return (new ByteArrayInputStream(stream.toByteArray()));
        } catch (TransformerException e) {
            throw new ServletException("XSL transformer error", e);
        } finally {
            if (Globals.IS_SECURITY_ENABLED) {
                PrivilegedSetTccl pa = new PrivilegedSetTccl(original);
                AccessController.doPrivileged(pa);
            } else {
                Thread.currentThread().setContextClassLoader(original);
            }
        }

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            ClassLoader oldTccl = null;
            if (context.getLoader() != null &&
                    context.getLoader().getClassLoader() != null) {
                oldTccl = Thread.currentThread().getContextClassLoader();
                if (Globals.IS_SECURITY_ENABLED) {
                    PrivilegedAction<Void> pa = new PrivilegedSetTccl(
                            context.getLoader().getClassLoader());
                    AccessController.doPrivileged(pa);
                } else {
                    Thread.currentThread().setContextClassLoader(
                            context.getLoader().getClassLoader());
                }
            }
            try {
                Object listeners[] = context.getApplicationLifecycleListeners();
                if (notify && (listeners != null)) {
                    HttpSessionEvent event =
                        new HttpSessionEvent(getSession());
                    for (int i = 0; i < listeners.length; i++) {
                        int j = (listeners.length - 1) - i;
                        if (!(listeners[j] instanceof HttpSessionListener))
                            continue;
                        HttpSessionListener listener =
                            (HttpSessionListener) listeners[j];
                        try {
                            context.fireContainerEvent("beforeSessionDestroyed",
                                    listener);
                            listener.sessionDestroyed(event);
                            context.fireContainerEvent("afterSessionDestroyed",
                                    listener);
                        } catch (Throwable t) {
                            ExceptionUtils.handleThrowable(t);
                            try {
                                context.fireContainerEvent(
                                        "afterSessionDestroyed", listener);
                            } catch (Exception e) {
                                // Ignore
                            }
                            manager.getContainer().getLogger().error
                                (sm.getString("standardSession.sessionEvent"), t);
                        }
                    }
                }
            } finally {
                if (oldTccl != null) {
                    if (Globals.IS_SECURITY_ENABLED) {
                        PrivilegedAction<Void> pa =
                            new PrivilegedSetTccl(oldTccl);
                        AccessController.doPrivileged(pa);
                    } else {
                        Thread.currentThread().setContextClassLoader(oldTccl);
                    }
                }
            }


            if (ACTIVITY_CHECK) {
                accessCount.set(0);
            }


            // Remove this session from our manager's active sessions
            manager.remove(this, true);


            // Notify interested session event listeners
            if (notify) {
                fireSessionEvent(Session.SESSION_DESTROYED_EVENT, null);
            }


            // Call the logout method
            if (principal instanceof GenericPrincipal) {
                GenericPrincipal gp = (GenericPrincipal) principal;
                try {
                    gp.logout();
                } catch (Exception e) {
                    manager.getContainer().getLogger().error(
                            sm.getString("standardSession.logoutfail"),
                            e);
                }
            }


            // We have completed expire of this session
            setValid(false);
            expiring = false;


            // Unbind any objects associated with this session
            String keys[] = keys();
            if (oldTccl != null) {
                if (Globals.IS_SECURITY_ENABLED) {
                    PrivilegedAction<Void> pa = new PrivilegedSetTccl(
                            context.getLoader().getClassLoader());
                    AccessController.doPrivileged(pa);
                } else {
                    Thread.currentThread().setContextClassLoader(
                            context.getLoader().getClassLoader());
                }
            }
            try {
                for (int i = 0; i < keys.length; i++) {
                    removeAttributeInternal(keys[i], notify);
                }
            } finally {
                if (oldTccl != null) {
                    if (Globals.IS_SECURITY_ENABLED) {
                        PrivilegedAction<Void> pa =
                            new PrivilegedSetTccl(oldTccl);
                        AccessController.doPrivileged(pa);
                    } else {
                        Thread.currentThread().setContextClassLoader(oldTccl);
                    }
                }

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        // Bind the context CL to the current thread
        if( context.getLoader() != null ) {
            // Not started - it should check for availability first
            // This should eventually move to Engine, it's generic.
            if (Globals.IS_SECURITY_ENABLED) {
                PrivilegedAction<Void> pa = new PrivilegedSetTccl(
                        context.getLoader().getClassLoader());
                AccessController.doPrivileged(pa);                
            } else {
                Thread.currentThread().setContextClassLoader
                        (context.getLoader().getClassLoader());
            }
        }
        if (request.isAsyncSupported()) {
            request.setAsyncSupported(context.getPipeline().isAsyncSupported());
        }


        // Don't fire listeners during async processing
        // If a request init listener throws an exception, the request is
        // aborted
        boolean asyncAtStart = request.isAsync(); 
        // An async error page may dispatch to another resource. This flag helps
        // ensure an infinite error handling loop is not entered
        boolean errorAtStart = response.isError();
        if (asyncAtStart || context.fireRequestInitEvent(request)) {


            // Ask this Context to process this request
            try {
                context.getPipeline().getFirst().invoke(request, response);
            } catch (Throwable t) {
                ExceptionUtils.handleThrowable(t);
                if (errorAtStart) {
                    container.getLogger().error("Exception Processing " +
                            request.getRequestURI(), t);
                } else {
                    request.setAttribute(RequestDispatcher.ERROR_EXCEPTION, t);
                    throwable(request, response, t);
                }
            }
    
            // If the request was async at the start and an error occurred then
            // the async error handling will kick-in and that will fire the
            // request destroyed event *after* the error handling has taken
            // place
            if (!(request.isAsync() || (asyncAtStart &&
                    request.getAttribute(
                            RequestDispatcher.ERROR_EXCEPTION) != null))) {
                // Protect against NPEs if context was destroyed during a
                // long running request.
                if (context.getState().isAvailable()) {
                    if (!errorAtStart) {
                        // Error page processing
                        response.setSuspended(false);
    
                        Throwable t = (Throwable) request.getAttribute(
                                RequestDispatcher.ERROR_EXCEPTION);
    
                        if (t != null) {
                            throwable(request, response, t);
                        } else {
                            status(request, response);
                        }
                    }
    
                    context.fireRequestDestroyEvent(request);
                }
            }
        }


        // Access a session (if present) to update last accessed time, based on a
        // strict interpretation of the specification
        if (ACCESS_SESSION) {
            request.getSession(false);
        }


        // Restore the context classloader
        if (Globals.IS_SECURITY_ENABLED) {
            PrivilegedAction<Void> pa = new PrivilegedSetTccl(
                    StandardHostValve.class.getClassLoader());
            AccessController.doPrivileged(pa);                
        } else {
            Thread.currentThread().setContextClassLoader
                    (StandardHostValve.class.getClassLoader());

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                    SocketProcessor proc = new SocketProcessor(socket,status);
                    ClassLoader loader = Thread.currentThread().getContextClassLoader();
                    try {
                        //threads should not be created by the webapp classloader
                        if (Constants.IS_SECURITY_ENABLED) {
                            PrivilegedAction<Void> pa = new PrivilegedSetTccl(
                                    getClass().getClassLoader());
                            AccessController.doPrivileged(pa);
                        } else {
                            Thread.currentThread().setContextClassLoader(
                                    getClass().getClassLoader());
                        }
                        // During shutdown, executor may be null - avoid NPE
                        if (!running) {
                            return;
                        }
                        getExecutor().execute(proc);
                        //TODO gotta catch RejectedExecutionException and properly handle it
                    } finally {
                        if (Constants.IS_SECURITY_ENABLED) {
                            PrivilegedAction<Void> pa = new PrivilegedSetTccl(loader);
                            AccessController.doPrivileged(pa);
                        } else {
                            Thread.currentThread().setContextClassLoader(loader);
                        }
                    }

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                    SocketProcessor proc = new SocketProcessor(socket, status);
                    ClassLoader loader = Thread.currentThread().getContextClassLoader();
                    try {
                        //threads should not be created by the webapp classloader
                        if (Constants.IS_SECURITY_ENABLED) {
                            PrivilegedAction<Void> pa = new PrivilegedSetTccl(
                                    getClass().getClassLoader());
                            AccessController.doPrivileged(pa);
                        } else {
                            Thread.currentThread().setContextClassLoader(
                                    getClass().getClassLoader());
                        }
                        Executor executor = getExecutor();
                        if (executor == null) {
                            log.warn(sm.getString("endpoint.warn.noExector",
                                    socket, status));
                            return;
                        } else {
                            executor.execute(proc);
                        }
                    } finally {
                        if (Constants.IS_SECURITY_ENABLED) {
                            PrivilegedAction<Void> pa = new PrivilegedSetTccl(loader);
                            AccessController.doPrivileged(pa);
                        } else {
                            Thread.currentThread().setContextClassLoader(loader);
                        }
                    }

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        } else {
            original = Thread.currentThread().getContextClassLoader();
        }
        try {
            if (Constants.IS_SECURITY_ENABLED) {
                PrivilegedSetTccl pa =
                        new PrivilegedSetTccl(ParserUtils.class.getClassLoader());
                AccessController.doPrivileged(pa);
            } else {
                Thread.currentThread().setContextClassLoader(
                        ParserUtils.class.getClassLoader());
            }
            
            DocumentBuilderFactory factory =
                DocumentBuilderFactory.newInstance();
            factory.setNamespaceAware(true);
            factory.setValidating(validating);
            if (validating) {
                // Enable DTD validation
                factory.setFeature(
                        "http://xml.org/sax/features/validation",
                        true);
                // Enable schema validation
                factory.setFeature(
                        "http://apache.org/xml/features/validation/schema",
                        true);
            }
            DocumentBuilder builder = factory.newDocumentBuilder();
            builder.setEntityResolver(entityResolverInstance);
            XmlErrorHandler handler = new XmlErrorHandler();
            builder.setErrorHandler(handler);
            document = builder.parse(is);
            if (!handler.getErrors().isEmpty()) {
                // throw the first to indicate there was a error during processing
                throw handler.getErrors().iterator().next();
            }
        } catch (ParserConfigurationException ex) {
            throw new JasperException
                (Localizer.getMessage("jsp.error.parse.xml", location), ex);
        } catch (SAXParseException ex) {
            throw new JasperException
                (Localizer.getMessage("jsp.error.parse.xml.line",
                                      location,
                                      Integer.toString(ex.getLineNumber()),
                                      Integer.toString(ex.getColumnNumber())),
                 ex);
        } catch (SAXException sx) {
            throw new JasperException
                (Localizer.getMessage("jsp.error.parse.xml", location), sx);
        } catch (IOException io) {
            throw new JasperException
                (Localizer.getMessage("jsp.error.parse.xml", location), io);
        } finally {
            if (Constants.IS_SECURITY_ENABLED) {
                PrivilegedSetTccl pa = new PrivilegedSetTccl(original);
                AccessController.doPrivileged(pa);
            } else {
                Thread.currentThread().setContextClassLoader(original);
            }
        }

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            } else {
                oldCL = Thread.currentThread().getContextClassLoader();
            }
            try {
                if (Constants.IS_SECURITY_ENABLED) {
                    PrivilegedAction<Void> pa = new PrivilegedSetTccl(
                            this.getClass().getClassLoader());
                    AccessController.doPrivileged(pa);
                } else {
                    Thread.currentThread().setContextClassLoader(
                            this.getClass().getClassLoader());
                }
                
                processor.getExecutor().execute(runnable);
            } finally {
                if (Constants.IS_SECURITY_ENABLED) {
                    PrivilegedAction<Void> pa = new PrivilegedSetTccl(
                            oldCL);
                    AccessController.doPrivileged(pa);
                } else {
                    Thread.currentThread().setContextClassLoader(oldCL);
                }

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