/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.catalina.startup;

import java.beans.PropertyChangeListener;
import java.io.File;
import java.net.URL;
import java.util.Locale;
import java.util.Map;
import java.util.Set;

import javax.servlet.ServletContainerInitializer;
import javax.servlet.ServletContext;
import javax.servlet.ServletRegistration;
import javax.servlet.ServletRequest;
import javax.servlet.ServletSecurityElement;
import javax.servlet.descriptor.JspConfigDescriptor;

import org.apache.catalina.AccessLog;
import org.apache.catalina.Authenticator;
import org.apache.catalina.Cluster;
import org.apache.catalina.Container;
import org.apache.catalina.ContainerListener;
import org.apache.catalina.Context;
import org.apache.catalina.Engine;
import org.apache.catalina.Host;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.Loader;
import org.apache.catalina.Manager;
import org.apache.catalina.Pipeline;
import org.apache.catalina.Realm;
import org.apache.catalina.ThreadBindingListener;
import org.apache.catalina.Valve;
import org.apache.catalina.WebResourceRoot;
import org.apache.catalina.Wrapper;
import org.apache.catalina.connector.Request;
import org.apache.catalina.connector.Response;
import org.apache.catalina.deploy.NamingResourcesImpl;
import org.apache.catalina.util.ContextName;
import org.apache.catalina.util.LifecycleMBeanBase;
import org.apache.juli.logging.Log;
import org.apache.tomcat.InstanceManager;
import org.apache.tomcat.JarScanner;
import org.apache.tomcat.util.descriptor.web.ApplicationParameter;
import org.apache.tomcat.util.descriptor.web.ErrorPage;
import org.apache.tomcat.util.descriptor.web.FilterDef;
import org.apache.tomcat.util.descriptor.web.FilterMap;
import org.apache.tomcat.util.descriptor.web.LoginConfig;
import org.apache.tomcat.util.descriptor.web.SecurityConstraint;
import org.apache.tomcat.util.http.CookieProcessor;
import org.apache.tomcat.util.res.StringManager;

/**
 * An implementation of {@link Context} that is used as a place-holder for
 * deployed applications when their deployment fails and a Context instance
 * (usually {@link org.apache.catalina.core.StandardContext} but may be any
 * Context implementation) cannot be created.
 */
public class FailedContext extends LifecycleMBeanBase implements Context {

    protected static final StringManager sm =
            StringManager.getManager(Constants.Package);


    // --------------------- Methods that need to work even for a failed context

    private URL configFile;
    @Override
    public URL getConfigFile() { return configFile; }
    @Override
    public void setConfigFile(URL configFile) { this.configFile = configFile; }


    private String docBase;
    @Override
    public String getDocBase() { return docBase; }
    @Override
    public void setDocBase(String docBase) { this.docBase = docBase; }


    private String name = null;
    @Override
    public String getName() { return name; }
    @Override
    public void setName(String name) { this.name = name; }


    private Container parent;
    @Override
    public Container getParent() { return parent; }
    @Override
    public void setParent(Container parent) { this.parent = parent; }


    private String path = null;
    @Override
    public String getPath() { return path; }
    @Override
    public void setPath(String path) { this.path = path; }


    private String webappVersion = null;
    @Override
    public String getWebappVersion() { return webappVersion; }
    @Override
    public void setWebappVersion(String webappVersion) {
        this.webappVersion = webappVersion;
    }


    @Override
    protected String getDomainInternal() {
        Container p = getParent();
        if (p == null) {
            return null;
        } else {
            return p.getDomain();
        }
    }


    @Override
    public String getMBeanKeyProperties() {
        Container c = this;
        StringBuilder keyProperties = new StringBuilder();
        int containerCount = 0;

        // Work up container hierarchy, add a component to the name for
        // each container
        while (!(c instanceof Engine)) {
            if (c instanceof Context) {
                keyProperties.append(",context=");
                ContextName cn = new ContextName(c.getName(), false);
                keyProperties.append(cn.getDisplayName());
            } else if (c instanceof Host) {
                keyProperties.append(",host=");
                keyProperties.append(c.getName());
            } else if (c == null) {
                // May happen in unit testing and/or some embedding scenarios
                keyProperties.append(",container");
                keyProperties.append(containerCount++);
                keyProperties.append("=null");
                break;
            } else {
                // Should never happen...
                keyProperties.append(",container");
                keyProperties.append(containerCount++);
                keyProperties.append('=');
                keyProperties.append(c.getName());
            }
            c = c.getParent();
        }
        return keyProperties.toString();
    }


    @Override
    protected String getObjectNameKeyProperties() {

        StringBuilder keyProperties =
            new StringBuilder("j2eeType=WebModule,name=//");

        String hostname = getParent().getName();
        if (hostname == null) {
            keyProperties.append("DEFAULT");
        } else {
            keyProperties.append(hostname);
        }

        String contextName = getName();
        if (!contextName.startsWith("/")) {
            keyProperties.append('/');
        }
        keyProperties.append(contextName);

        keyProperties.append(",J2EEApplication=none,J2EEServer=none");

        return keyProperties.toString();
    }


    @Override
    protected void startInternal() throws LifecycleException {
        throw new LifecycleException(
                sm.getString("failedContext.start", getName()));
    }


    @Override
    protected void stopInternal() throws LifecycleException {
        // NO-OP
        // Allow stop to complete since it is used for clean-up
    }


    // Only need to read these
    @Override
    public void addWatchedResource(String name) { /* NO-OP */ }
    @Override
    public String[] findWatchedResources() { return new String[0]; }
    @Override
    public void removeWatchedResource(String name) { /* NO-OP */ }


    @Override
    public void addChild(Container child) { /* NO-OP */ }
    @Override
    public Container findChild(String name) { return null; }
    @Override
    public Container[] findChildren() { return new Container[0]; }
    @Override
    public void removeChild(Container child) { /* NO-OP */ }

    @Override
    public String toString() {
        return getName();
    }

    // -------------------------------------------- All NO-OPs beyond this point
    @Override
    public Loader getLoader() { return null; }
    @Override
    public void setLoader(Loader loader) { /* NO-OP */ }

    @Override
    public Log getLogger() { return null; }

    @Override
    public Manager getManager() { return null; }
    @Override
    public void setManager(Manager manager) { /* NO-OP */ }

    @Override
    public Pipeline getPipeline() { return null; }

    @Override
    public Cluster getCluster() { return null; }
    @Override
    public void setCluster(Cluster cluster) { /* NO-OP */ }

    @Override
    public int getBackgroundProcessorDelay() { return -1; }
    @Override
    public void setBackgroundProcessorDelay(int delay) { /* NO-OP */ }

    @Override
    public ClassLoader getParentClassLoader() { return null; }
    @Override
    public void setParentClassLoader(ClassLoader parent) { /* NO-OP */ }

    @Override
    public Realm getRealm() { return null; }
    @Override
    public void setRealm(Realm realm) { /* NO-OP */ }

    @Override
    public WebResourceRoot getResources() { return null; }
    @Override
    public void setResources(WebResourceRoot resources) { /* NO-OP */ }

    @Override
    public void backgroundProcess() { /* NO-OP */ }

    @Override
    public void addContainerListener(ContainerListener listener) { /* NO-OP */ }
    @Override
    public ContainerListener[] findContainerListeners() { return null; }
    @Override
    public void removeContainerListener(ContainerListener listener) { /* NO-OP */ }

    @Override
    public void addPropertyChangeListener(PropertyChangeListener listener) { /* NO-OP */ }
    @Override
    public void removePropertyChangeListener(PropertyChangeListener listener) { /* NO-OP */ }

    @Override
    public void fireContainerEvent(String type, Object data) { /* NO-OP */ }

    @Override
    public void logAccess(Request request, Response response, long time,
            boolean useDefault) { /* NO-OP */ }

    @Override
    public AccessLog getAccessLog() { return null; }

    @Override
    public int getStartStopThreads() { return 0; }
    @Override
    public void setStartStopThreads(int startStopThreads) { /* NO-OP */ }

    @Override
    public boolean getAllowCasualMultipartParsing() { return false; }
    @Override
    public void setAllowCasualMultipartParsing(
            boolean allowCasualMultipartParsing) { /* NO-OP */ }

    @Override
    public Object[] getApplicationEventListeners() { return null; }
    @Override
    public void setApplicationEventListeners(Object[] listeners) { /* NO-OP */ }

    @Override
    public Object[] getApplicationLifecycleListeners() { return null; }
    @Override
    public void setApplicationLifecycleListeners(Object[] listeners) { /* NO-OP */ }

    @Override
    public String getCharset(Locale locale) { return null; }

    @Override
    public boolean getConfigured() { return false; }
    @Override
    public void setConfigured(boolean configured) { /* NO-OP */ }

    @Override
    public boolean getCookies() { return false; }
    @Override
    public void setCookies(boolean cookies) { /* NO-OP */ }

    @Override
    public String getSessionCookieName() { return null; }
    @Override
    public void setSessionCookieName(String sessionCookieName) { /* NO-OP */ }

    @Override
    public boolean getUseHttpOnly() { return false; }
    @Override
    public void setUseHttpOnly(boolean useHttpOnly) { /* NO-OP */ }

    @Override
    public String getSessionCookieDomain() { return null; }
    @Override
    public void setSessionCookieDomain(String sessionCookieDomain) { /* NO-OP */ }

    @Override
    public String getSessionCookiePath() { return null; }
    @Override
    public void setSessionCookiePath(String sessionCookiePath) { /* NO-OP */ }

    @Override
    public boolean getSessionCookiePathUsesTrailingSlash() { return false; }
    @Override
    public void setSessionCookiePathUsesTrailingSlash(
            boolean sessionCookiePathUsesTrailingSlash) { /* NO-OP */ }

    @Override
    public boolean getCrossContext() { return false; }
    @Override
    public void setCrossContext(boolean crossContext) { /* NO-OP */ }

    @Override
    public String getAltDDName() { return null; }
    @Override
    public void setAltDDName(String altDDName) { /* NO-OP */ }

    @Override
    public boolean getDenyUncoveredHttpMethods() { return false; }
    @Override
    public void setDenyUncoveredHttpMethods(boolean denyUncoveredHttpMethods) {
        // NO-OP
    }

    @Override
    public String getDisplayName() { return null; }
    @Override
    public void setDisplayName(String displayName) { /* NO-OP */ }

    @Override
    public boolean getDistributable() { return false; }
    @Override
    public void setDistributable(boolean distributable) { /* NO-OP */ }

    @Override
    public String getEncodedPath() { return null; }

    @Override
    public boolean getIgnoreAnnotations() { return false; }
    @Override
    public void setIgnoreAnnotations(boolean ignoreAnnotations) { /* NO-OP */ }

    @Override
    public LoginConfig getLoginConfig() { return null; }
    @Override
    public void setLoginConfig(LoginConfig config) { /* NO-OP */ }

    @Override
    public NamingResourcesImpl getNamingResources() { return null; }
    @Override
    public void setNamingResources(NamingResourcesImpl namingResources) { /* NO-OP */ }

    @Override
    public String getPublicId() { return null; }
    @Override
    public void setPublicId(String publicId) { /* NO-OP */ }

    @Override
    public boolean getReloadable() { return false; }
    @Override
    public void setReloadable(boolean reloadable) { /* NO-OP */ }

    @Override
    public boolean getOverride() { return false; }
    @Override
    public void setOverride(boolean override) { /* NO-OP */ }

    @Override
    public boolean getPrivileged() { return false; }
    @Override
    public void setPrivileged(boolean privileged) { /* NO-OP */ }

    @Override
    public ServletContext getServletContext() { return null; }

    @Override
    public int getSessionTimeout() { return 0; }
    @Override
    public void setSessionTimeout(int timeout) { /* NO-OP */ }

    @Override
    public boolean getSwallowAbortedUploads() { return false; }
    @Override
    public void setSwallowAbortedUploads(boolean swallowAbortedUploads) { /* NO-OP */ }

    @Override
    public boolean getSwallowOutput() { return false; }
    @Override
    public void setSwallowOutput(boolean swallowOutput) { /* NO-OP */ }

    @Override
    public String getWrapperClass() { return null; }
    @Override
    public void setWrapperClass(String wrapperClass) { /* NO-OP */ }

    @Override
    public boolean getXmlNamespaceAware() { return false; }
    @Override
    public void setXmlNamespaceAware(boolean xmlNamespaceAware) { /* NO-OP */ }

    @Override
    public boolean getXmlValidation() { return false; }
    @Override
    public void setXmlValidation(boolean xmlValidation) { /* NO-OP */ }

    @Override
    public boolean getXmlBlockExternal() { return true; }
    @Override
    public void setXmlBlockExternal(boolean xmlBlockExternal) { /* NO-OP */ }

    @Override
    public boolean getTldValidation() { return false; }
    @Override
    public void setTldValidation(boolean tldValidation){ /* NO-OP */ }

    @Override
    public JarScanner getJarScanner() { return null; }
    @Override
    public void setJarScanner(JarScanner jarScanner) { /* NO-OP */ }

    @Override
    public Authenticator getAuthenticator() { return null; }

    @Override
    public void setLogEffectiveWebXml(boolean logEffectiveWebXml) { /* NO-OP */ }
    @Override
    public boolean getLogEffectiveWebXml() { return false; }

    @Override
    public void addApplicationListener(String listener) { /* NO-OP */ }
    @Override
    public String[] findApplicationListeners() { return null; }
    @Override
    public void removeApplicationListener(String listener) { /* NO-OP */ }

    @Override
    public void addApplicationParameter(ApplicationParameter parameter) { /* NO-OP */ }
    @Override
    public ApplicationParameter[] findApplicationParameters() { return null; }
    @Override
    public void removeApplicationParameter(String name) { /* NO-OP */ }

    @Override
    public void addConstraint(SecurityConstraint constraint) { /* NO-OP */ }
    @Override
    public SecurityConstraint[] findConstraints() { return null; }
    @Override
    public void removeConstraint(SecurityConstraint constraint) { /* NO-OP */ }

    @Override
    public void addErrorPage(ErrorPage errorPage) { /* NO-OP */ }
    @Override
    public ErrorPage findErrorPage(int errorCode) { return null; }
    @Override
    public ErrorPage findErrorPage(String exceptionType) { return null; }
    @Override
    public ErrorPage[] findErrorPages() { return null; }
    @Override
    public void removeErrorPage(ErrorPage errorPage) { /* NO-OP */ }

    @Override
    public void addFilterDef(FilterDef filterDef) { /* NO-OP */ }
    @Override
    public FilterDef findFilterDef(String filterName) { return null; }
    @Override
    public FilterDef[] findFilterDefs() { return null; }
    @Override
    public void removeFilterDef(FilterDef filterDef) { /* NO-OP */ }

    @Override
    public void addFilterMap(FilterMap filterMap) { /* NO-OP */ }
    @Override
    public void addFilterMapBefore(FilterMap filterMap) { /* NO-OP */ }
    @Override
    public FilterMap[] findFilterMaps() { return null; }
    @Override
    public void removeFilterMap(FilterMap filterMap) { /* NO-OP */ }

    @Override
    public void addLocaleEncodingMappingParameter(String locale, String encoding) { /* NO-OP */ }

    @Override
    public void addMimeMapping(String extension, String mimeType) { /* NO-OP */ }
    @Override
    public String findMimeMapping(String extension) { return null; }
    @Override
    public String[] findMimeMappings() { return null; }
    @Override
    public void removeMimeMapping(String extension) { /* NO-OP */ }

    @Override
    public void addParameter(String name, String value) { /* NO-OP */ }
    @Override
    public String findParameter(String name) { return null; }
    @Override
    public String[] findParameters() { return null; }
    @Override
    public void removeParameter(String name) { /* NO-OP */ }

    @Override
    public void addRoleMapping(String role, String link) { /* NO-OP */ }
    @Override
    public String findRoleMapping(String role) { return null; }
    @Override
    public void removeRoleMapping(String role) { /* NO-OP */ }

    @Override
    public void addSecurityRole(String role) { /* NO-OP */ }
    @Override
    public boolean findSecurityRole(String role) { return false; }
    @Override
    public String[] findSecurityRoles() { return null; }
    @Override
    public void removeSecurityRole(String role) { /* NO-OP */ }

    @Override
    public void addServletMapping(String pattern, String name) { /* NO-OP */ }
    @Override
    public void addServletMapping(String pattern, String name,
            boolean jspWildcard) { /* NO-OP */ }
    @Override
    public String findServletMapping(String pattern) { return null; }
    @Override
    public String[] findServletMappings() { return null; }
    @Override
    public void removeServletMapping(String pattern) { /* NO-OP */ }

    @Override
    public void addWelcomeFile(String name) { /* NO-OP */ }
    @Override
    public boolean findWelcomeFile(String name) { return false; }
    @Override
    public String[] findWelcomeFiles() { return null; }
    @Override
    public void removeWelcomeFile(String name) { /* NO-OP */ }

    @Override
    public void addWrapperLifecycle(String listener) { /* NO-OP */ }
    @Override
    public String[] findWrapperLifecycles() { return null; }
    @Override
    public void removeWrapperLifecycle(String listener) { /* NO-OP */ }

    @Override
    public void addWrapperListener(String listener) { /* NO-OP */ }
    @Override
    public String[] findWrapperListeners() { return null; }
    @Override
    public void removeWrapperListener(String listener) { /* NO-OP */ }

    @Override
    public Wrapper createWrapper() { return null; }

    @Override
    public String findStatusPage(int status) { return null; }
    @Override
    public int[] findStatusPages() { return null; }

    @Override
    public boolean fireRequestInitEvent(ServletRequest request) { return false; }
    @Override
    public boolean fireRequestDestroyEvent(ServletRequest request) { return false; }

    @Override
    public void reload() { /* NO-OP */ }

    @Override
    public String getRealPath(String path) { return null; }

    @Override
    public int getEffectiveMajorVersion() { return 0; }
    @Override
    public void setEffectiveMajorVersion(int major) { /* NO-OP */ }

    @Override
    public int getEffectiveMinorVersion() { return 0; }
    @Override
    public void setEffectiveMinorVersion(int minor) { /* NO-OP */ }

    @Override
    public JspConfigDescriptor getJspConfigDescriptor() { return null; }

    @Override
    public void setJspConfigDescriptor(JspConfigDescriptor descriptor) { /* NO-OP */ }

    @Override
    public void addServletContainerInitializer(ServletContainerInitializer sci,
            Set<Class<?>> classes) { /* NO-OP */ }

    @Override
    public boolean getPaused() { return false; }

    @Override
    public boolean isServlet22() { return false; }

    @Override
    public Set<String> addServletSecurity(
            ServletRegistration.Dynamic registration,
            ServletSecurityElement servletSecurityElement) { return null; }

    @Override
    public void setResourceOnlyServlets(String resourceOnlyServlets) { /* NO-OP */ }
    @Override
    public String getResourceOnlyServlets() { return null; }
    @Override
    public boolean isResourceOnlyServlet(String servletName) { return false; }

    @Override
    public String getBaseName() { return null; }

    @Override
    public void setFireRequestListenersOnForwards(boolean enable) { /* NO-OP */ }
    @Override
    public boolean getFireRequestListenersOnForwards() { return false; }

    @Override
    public void setPreemptiveAuthentication(boolean enable) { /* NO-OP */ }
    @Override
    public boolean getPreemptiveAuthentication() { return false; }

    @Override
    public void setSendRedirectBody(boolean enable) { /* NO-OP */ }
    @Override
    public boolean getSendRedirectBody() { return false; }

    @SuppressWarnings("unused")
    public synchronized void addValve(Valve valve) { /* NO-OP */ }

    @Override
    public File getCatalinaBase() { return null; }

    @Override
    public File getCatalinaHome() { return null; }

    @Override
    public void setAddWebinfClassesResources(boolean addWebinfClassesResources) {
        // NO-OP
    }
    @Override
    public boolean getAddWebinfClassesResources() { return false; }

    @Override
    public void addPostConstructMethod(String clazz, String method) { /* NO-OP */ }

    @Override
    public void addPreDestroyMethod(String clazz, String method) { /* NO-OP */ }

    @Override
    public void removePostConstructMethod(String clazz) { /* NO-OP */ }

    @Override
    public void removePreDestroyMethod(String clazz) { /* NO-OP */ }

    @Override
    public String findPostConstructMethod(String clazz) { return null; }

    @Override
    public String findPreDestroyMethod(String clazz) { return null; }

    @Override
    public Map<String, String> findPostConstructMethods() { return null; }

    @Override
    public Map<String, String> findPreDestroyMethods() { return null; }

    @Override
    public InstanceManager getInstanceManager() { return null; }

    @Override
    public void setInstanceManager(InstanceManager instanceManager) { /* NO-OP */ }

    @Override
    public void setContainerSciFilter(String containerSciFilter) { /* NO-OP */ }

    @Override
    public String getContainerSciFilter() { return null; }

    @Override
    public ThreadBindingListener getThreadBindingListener() { return null; }

    @Override
    public void setThreadBindingListener(ThreadBindingListener threadBindingListener) {
        // NO-OP
    }

    @Override
    public ClassLoader bind(boolean usePrivilegedAction, ClassLoader originalClassLoader) {
        return null;
    }

    @Override
    public void unbind(boolean usePrivilegedAction, ClassLoader originalClassLoader) {
        // NO-OP
    }

    @Override
    public Object getNamingToken() { return null; }

    @Override
    public void setCookieProcessor(CookieProcessor cookieProcessor) { /* NO-OP */ }

    @Override
    public CookieProcessor getCookieProcessor() { return null; }

    @Override
    public void setValidateClientProvidedNewSessionId(boolean validateClientProvidedNewSessionId) {
        // NO-OP
    }

    @Override
    public boolean getValidateClientProvidedNewSessionId() { return false; }

    @Override
    public void setMapperContextRootRedirectEnabled(boolean mapperContextRootRedirectEnabled) {
        // NO-OP
    }

    @Override
    public boolean getMapperContextRootRedirectEnabled() { return false; }

    @Override
    public void setMapperDirectoryRedirectEnabled(boolean mapperDirectoryRedirectEnabled) {
        // NO-OP
    }

    @Override
    public boolean getMapperDirectoryRedirectEnabled() { return false; }

    @Override
    public void setUseRelativeRedirects(boolean useRelativeRedirects) { /* NO-OP */ }
    @Override
    public boolean getUseRelativeRedirects() { return true; }

    @Override
    public void setDispatchersUseEncodedPaths(boolean dispatchersUseEncodedPaths) { /* NO-OP */ }
    @Override
    public boolean getDispatchersUseEncodedPaths() { return true; }
}