/*
* 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.io.File;
import java.util.Enumeration;
import org.apache.catalina.Context;
import org.apache.catalina.Host;
import org.apache.catalina.Lifecycle;
import org.apache.catalina.LifecycleEvent;
import org.apache.catalina.LifecycleListener;
import org.apache.catalina.util.StringManager;
/**
* Startup event listener for a <b>Host</b> that configures Contexts (web
* applications) for all defined "users" who have a web application in a
* directory with the specified name in their home directories. The context
* path of each deployed application will be set to <code>~xxxxx</code>, where
* xxxxx is the username of the owning user for that web application
*
* @author Craig R. McClanahan
*
*/
public final class UserConfig
implements LifecycleListener {
private static org.apache.juli.logging.Log log=
org.apache.juli.logging.LogFactory.getLog( UserConfig.class );
// ----------------------------------------------------- Instance Variables
/**
* The Java class name of the Context configuration class we should use.
*/
private String configClass = "org.apache.catalina.startup.ContextConfig";
/**
* The Java class name of the Context implementation we should use.
*/
private String contextClass = "org.apache.catalina.core.StandardContext";
/**
* The directory name to be searched for within each user home directory.
*/
private String directoryName = "public_html";
/**
* The base directory containing user home directories.
*/
private String homeBase = null;
/**
* The Host we are associated with.
*/
private Host host = null;
/**
* The string resources for this package.
*/
private static final StringManager sm =
StringManager.getManager(Constants.Package);
/**
* The Java class name of the user database class we should use.
*/
private String userClass =
"org.apache.catalina.startup.PasswdUserDatabase";
// ------------------------------------------------------------- Properties
/**
* Return the Context configuration class name.
*/
public String getConfigClass() {
return (this.configClass);
}
/**
* Set the Context configuration class name.
*
* @param configClass The new Context configuration class name.
*/
public void setConfigClass(String configClass) {
this.configClass = configClass;
}
/**
* Return the Context implementation class name.
*/
public String getContextClass() {
return (this.contextClass);
}
/**
* Set the Context implementation class name.
*
* @param contextClass The new Context implementation class name.
*/
public void setContextClass(String contextClass) {
this.contextClass = contextClass;
}
/**
* Return the directory name for user web applications.
*/
public String getDirectoryName() {
return (this.directoryName);
}
/**
* Set the directory name for user web applications.
*
* @param directoryName The new directory name
*/
public void setDirectoryName(String directoryName) {
this.directoryName = directoryName;
}
/**
* Return the base directory containing user home directories.
*/
public String getHomeBase() {
return (this.homeBase);
}
/**
* Set the base directory containing user home directories.
*
* @param homeBase The new base directory
*/
public void setHomeBase(String homeBase) {
this.homeBase = homeBase;
}
/**
* Return the user database class name for this component.
*/
public String getUserClass() {
return (this.userClass);
}
/**
* Set the user database class name for this component.
*/
public void setUserClass(String userClass) {
this.userClass = userClass;
}
// --------------------------------------------------------- Public Methods
/**
* Process the START event for an associated Host.
*
* @param event The lifecycle event that has occurred
*/
public void lifecycleEvent(LifecycleEvent event) {
// Identify the host we are associated with
try {
host = (Host) event.getLifecycle();
} catch (ClassCastException e) {
log.error(sm.getString("hostConfig.cce", event.getLifecycle()), e);
return;
}
// Process the event that has occurred
if (event.getType().equals(Lifecycle.START_EVENT))
start();
else if (event.getType().equals(Lifecycle.STOP_EVENT))
stop();
}
// -------------------------------------------------------- Private Methods
/**
* Deploy a web application for any user who has a web application present
* in a directory with a specified name within their home directory.
*/
private void deploy() {
if (host.getLogger().isDebugEnabled())
host.getLogger().debug(sm.getString("userConfig.deploying"));
// Load the user database object for this host
UserDatabase database = null;
try {
Class clazz = Class.forName(userClass);
database = (UserDatabase) clazz.newInstance();
database.setUserConfig(this);
} catch (Exception e) {
host.getLogger().error(sm.getString("userConfig.database"), e);
return;
}
// Deploy the web application (if any) for each defined user
Enumeration users = database.getUsers();
while (users.hasMoreElements()) {
String user = (String) users.nextElement();
String home = database.getHome(user);
deploy(user, home);
}
}
/**
* Deploy a web application for the specified user if they have such an
* application in the defined directory within their home directory.
*
* @param user Username owning the application to be deployed
* @param home Home directory of this user
*/
private void deploy(String user, String home) {
// Does this user have a web application to be deployed?
String contextPath = "/~" + user;
if (host.findChild(contextPath) != null)
return;
File app = new File(home, directoryName);
if (!app.exists() || !app.isDirectory())
return;
/*
File dd = new File(app, "/WEB-INF/web.xml");
if (!dd.exists() || !dd.isFile() || !dd.canRead())
return;
*/
host.getLogger().info(sm.getString("userConfig.deploy", user));
// Deploy the web application for this user
try {
Class clazz = Class.forName(contextClass);
Context context =
(Context) clazz.newInstance();
context.setPath(contextPath);
context.setDocBase(app.toString());
if (context instanceof Lifecycle) {
clazz = Class.forName(configClass);
LifecycleListener listener =
(LifecycleListener) clazz.newInstance();
((Lifecycle) context).addLifecycleListener(listener);
}
host.addChild(context);
} catch (Exception e) {
host.getLogger().error(sm.getString("userConfig.error", user), e);
}
}
/**
* Process a "start" event for this Host.
*/
private void start() {
if (host.getLogger().isDebugEnabled())
host.getLogger().debug(sm.getString("userConfig.start"));
deploy();
}
/**
* Process a "stop" event for this Host.
*/
private void stop() {
if (host.getLogger().isDebugEnabled())
host.getLogger().debug(sm.getString("userConfig.stop"));
}
}