HTMLHostManagerServlet.java
/*
* 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.manager.host;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.URLEncoder;
import java.text.MessageFormat;
import java.util.Arrays;
import java.util.SortedSet;
import java.util.TreeSet;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.apache.catalina.Container;
import org.apache.catalina.Host;
import org.apache.catalina.util.ServerInfo;
import org.apache.tomcat.util.res.StringManager;
import org.apache.tomcat.util.security.Escape;
/**
* Servlet that enables remote management of the virtual hosts deployed on the server. Normally, this functionality will
* be protected by a security constraint in the web application deployment descriptor. However, this requirement can be
* relaxed during testing.
* <p>
* The difference between the <code>HostManagerServlet</code> and this Servlet is that this Servlet prints out an HTML
* interface which makes it easier to administrate.
* <p>
* However if you use a software that parses the output of <code>HostManagerServlet</code> you won't be able to upgrade
* to this Servlet since the output are not in the same format as from <code>HostManagerServlet</code>
*
* @author Bip Thelin
* @author Malcolm Edgar
* @author Glenn L. Nielsen
* @author Peter Rossbach
*
* @see org.apache.catalina.manager.ManagerServlet
*/
public final class HTMLHostManagerServlet extends HostManagerServlet {
private static final long serialVersionUID = 1L;
// --------------------------------------------------------- Public Methods
/**
* Process a GET request for the specified resource.
*
* @param request The servlet request we are processing
* @param response The servlet response we are creating
*
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet-specified error occurs
*/
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
StringManager smClient = StringManager.getManager(Constants.Package, request.getLocales());
// Identify the request parameters that we need
String command = request.getPathInfo();
// Prepare our output writer to generate the response message
response.setContentType("text/html; charset=" + Constants.CHARSET);
String message = "";
// Process the requested command
if (command == null) {
// No command == list
} else if (command.equals("/list")) {
// Nothing to do - always generate list
} else if (command.equals("/add") || command.equals("/remove") || command.equals("/start") ||
command.equals("/stop") || command.equals("/persist")) {
message = smClient.getString("hostManagerServlet.postCommand", command);
} else {
message = smClient.getString("hostManagerServlet.unknownCommand", command);
}
list(request, response, message, smClient);
}
/**
* Process a POST request for the specified resource.
*
* @param request The servlet request we are processing
* @param response The servlet response we are creating
*
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet-specified error occurs
*/
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
StringManager smClient = StringManager.getManager(Constants.Package, request.getLocales());
// Identify the request parameters that we need
String command = request.getPathInfo();
String name = request.getParameter("name");
// Prepare our output writer to generate the response message
response.setContentType("text/html; charset=" + Constants.CHARSET);
String message = "";
// Process the requested command
if (command == null) {
// No command == list
} else if (command.equals("/add")) {
message = add(request, name, smClient);
} else if (command.equals("/remove")) {
message = remove(name, smClient);
} else if (command.equals("/start")) {
message = start(name, smClient);
} else if (command.equals("/stop")) {
message = stop(name, smClient);
} else if (command.equals("/persist")) {
message = persist(smClient);
} else {
// Try GET
doGet(request, response);
}
list(request, response, message, smClient);
}
/**
* Add a host using the specified parameters.
*
* @param request The Servlet request
* @param name Host name
* @param smClient StringManager for the client's locale
*
* @return output
*/
protected String add(HttpServletRequest request, String name, StringManager smClient) {
StringWriter stringWriter = new StringWriter();
PrintWriter printWriter = new PrintWriter(stringWriter);
super.add(request, printWriter, name, true, smClient);
return stringWriter.toString();
}
/**
* Remove the specified host.
*
* @param name Host name
* @param smClient StringManager for the client's locale
*
* @return output
*/
protected String remove(String name, StringManager smClient) {
StringWriter stringWriter = new StringWriter();
PrintWriter printWriter = new PrintWriter(stringWriter);
super.remove(printWriter, name, smClient);
return stringWriter.toString();
}
/**
* Start the host with the specified name.
*
* @param name Host name
* @param smClient StringManager for the client's locale
*
* @return output
*/
protected String start(String name, StringManager smClient) {
StringWriter stringWriter = new StringWriter();
PrintWriter printWriter = new PrintWriter(stringWriter);
super.start(printWriter, name, smClient);
return stringWriter.toString();
}
/**
* Stop the host with the specified name.
*
* @param name Host name
* @param smClient StringManager for the client's locale
*
* @return output
*/
protected String stop(String name, StringManager smClient) {
StringWriter stringWriter = new StringWriter();
PrintWriter printWriter = new PrintWriter(stringWriter);
super.stop(printWriter, name, smClient);
return stringWriter.toString();
}
/**
* Persist the current configuration to server.xml.
*
* @param smClient i18n resources localized for the client
*
* @return output
*/
protected String persist(StringManager smClient) {
StringWriter stringWriter = new StringWriter();
PrintWriter printWriter = new PrintWriter(stringWriter);
super.persist(printWriter, smClient);
return stringWriter.toString();
}
/**
* Render an HTML list of the currently active Contexts in our virtual host, and memory and server status
* information.
*
* @param request The request
* @param response The response
* @param message a message to display
* @param smClient StringManager for the client's locale
*
* @throws IOException An IO error occurred
*/
public void list(HttpServletRequest request, HttpServletResponse response, String message, StringManager smClient)
throws IOException {
if (debug >= 1) {
log(sm.getString("hostManagerServlet.list", engine.getName()));
}
PrintWriter writer = response.getWriter();
Object[] args = new Object[2];
args[0] = getServletContext().getContextPath();
args[1] = smClient.getString("htmlHostManagerServlet.title");
// HTML Header Section
writer.print(MessageFormat.format(org.apache.catalina.manager.Constants.HTML_HEADER_SECTION, args));
// Body Header Section
writer.print(MessageFormat.format(org.apache.catalina.manager.Constants.BODY_HEADER_SECTION, args));
// Message Section
args = new Object[3];
args[0] = smClient.getString("htmlHostManagerServlet.messageLabel");
if (message == null || message.length() == 0) {
args[1] = "OK";
} else {
args[1] = Escape.htmlElementContent(message);
}
writer.print(MessageFormat.format(Constants.MESSAGE_SECTION, args));
// Manager Section
args = new Object[9];
args[0] = smClient.getString("htmlHostManagerServlet.manager");
args[1] = response.encodeURL(getServletContext().getContextPath() + "/html/list");
args[2] = smClient.getString("htmlHostManagerServlet.list");
args[3] = // External link
getServletContext().getContextPath() + "/" +
smClient.getString("htmlHostManagerServlet.helpHtmlManagerFile");
args[4] = smClient.getString("htmlHostManagerServlet.helpHtmlManager");
args[5] = // External link
getServletContext().getContextPath() + "/" +
smClient.getString("htmlHostManagerServlet.helpManagerFile");
args[6] = smClient.getString("htmlHostManagerServlet.helpManager");
args[7] = response.encodeURL("/manager/status");
args[8] = smClient.getString("statusServlet.title");
writer.print(MessageFormat.format(Constants.MANAGER_SECTION, args));
// Hosts Header Section
args = new Object[3];
args[0] = smClient.getString("htmlHostManagerServlet.hostName");
args[1] = smClient.getString("htmlHostManagerServlet.hostAliases");
args[2] = smClient.getString("htmlHostManagerServlet.hostTasks");
writer.print(MessageFormat.format(HOSTS_HEADER_SECTION, args));
// Hosts Row Section
// Create sorted set of host names.
Container[] children = engine.findChildren();
String hostNames[] = new String[children.length];
for (int i = 0; i < children.length; i++) {
hostNames[i] = children[i].getName();
}
SortedSet<String> sortedHostNames = new TreeSet<>();
sortedHostNames.addAll(Arrays.asList(hostNames));
String hostsStart = smClient.getString("htmlHostManagerServlet.hostsStart");
String hostsStop = smClient.getString("htmlHostManagerServlet.hostsStop");
String hostsRemove = smClient.getString("htmlHostManagerServlet.hostsRemove");
String hostThis = smClient.getString("htmlHostManagerServlet.hostThis");
for (String hostName : sortedHostNames) {
Host host = (Host) engine.findChild(hostName);
if (host != null) {
args = new Object[2];
args[0] = // External link
Escape.htmlElementContent(hostName);
String[] aliases = host.findAliases();
StringBuilder buf = new StringBuilder();
if (aliases.length > 0) {
buf.append(aliases[0]);
for (int j = 1; j < aliases.length; j++) {
buf.append(", ").append(aliases[j]);
}
}
if (buf.length() == 0) {
buf.append(" ");
args[1] = buf.toString();
} else {
args[1] = Escape.htmlElementContent(buf.toString());
}
writer.print(MessageFormat.format(HOSTS_ROW_DETAILS_SECTION, args));
args = new Object[5];
if (host.getState().isAvailable()) {
args[0] = response.encodeURL(getServletContext().getContextPath() + "/html/stop?name=" +
URLEncoder.encode(hostName, "UTF-8"));
args[1] = hostsStop;
} else {
args[0] = response.encodeURL(getServletContext().getContextPath() + "/html/start?name=" +
URLEncoder.encode(hostName, "UTF-8"));
args[1] = hostsStart;
}
args[2] = response.encodeURL(getServletContext().getContextPath() + "/html/remove?name=" +
URLEncoder.encode(hostName, "UTF-8"));
args[3] = hostsRemove;
args[4] = hostThis;
if (host == this.installedHost) {
writer.print(MessageFormat.format(MANAGER_HOST_ROW_BUTTON_SECTION, args));
} else {
writer.print(MessageFormat.format(HOSTS_ROW_BUTTON_SECTION, args));
}
}
}
// Add Section
args = new Object[6];
args[0] = smClient.getString("htmlHostManagerServlet.addTitle");
args[1] = smClient.getString("htmlHostManagerServlet.addHost");
args[2] = response.encodeURL(getServletContext().getContextPath() + "/html/add");
args[3] = smClient.getString("htmlHostManagerServlet.addName");
args[4] = smClient.getString("htmlHostManagerServlet.addAliases");
args[5] = smClient.getString("htmlHostManagerServlet.addAppBase");
writer.print(MessageFormat.format(ADD_SECTION_START, args));
args = new Object[3];
args[0] = smClient.getString("htmlHostManagerServlet.addAutoDeploy");
args[1] = "autoDeploy";
args[2] = "checked";
writer.print(MessageFormat.format(ADD_SECTION_BOOLEAN, args));
args[0] = smClient.getString("htmlHostManagerServlet.addDeployOnStartup");
args[1] = "deployOnStartup";
args[2] = "checked";
writer.print(MessageFormat.format(ADD_SECTION_BOOLEAN, args));
args[0] = smClient.getString("htmlHostManagerServlet.addDeployXML");
args[1] = "deployXML";
args[2] = "checked";
writer.print(MessageFormat.format(ADD_SECTION_BOOLEAN, args));
args[0] = smClient.getString("htmlHostManagerServlet.addUnpackWARs");
args[1] = "unpackWARs";
args[2] = "checked";
writer.print(MessageFormat.format(ADD_SECTION_BOOLEAN, args));
args[0] = smClient.getString("htmlHostManagerServlet.addManager");
args[1] = "manager";
args[2] = "checked";
writer.print(MessageFormat.format(ADD_SECTION_BOOLEAN, args));
args[0] = smClient.getString("htmlHostManagerServlet.addCopyXML");
args[1] = "copyXML";
args[2] = "";
writer.print(MessageFormat.format(ADD_SECTION_BOOLEAN, args));
args = new Object[1];
args[0] = smClient.getString("htmlHostManagerServlet.addButton");
writer.print(MessageFormat.format(ADD_SECTION_END, args));
// Persist Configuration Section
args = new Object[4];
args[0] = smClient.getString("htmlHostManagerServlet.persistTitle");
args[1] = response.encodeURL(getServletContext().getContextPath() + "/html/persist");
args[2] = smClient.getString("htmlHostManagerServlet.persistAllButton");
args[3] = smClient.getString("htmlHostManagerServlet.persistAll");
writer.print(MessageFormat.format(PERSIST_SECTION, args));
// Server Header Section
args = new Object[7];
args[0] = smClient.getString("htmlHostManagerServlet.serverTitle");
args[1] = smClient.getString("htmlHostManagerServlet.serverVersion");
args[2] = smClient.getString("htmlHostManagerServlet.serverJVMVersion");
args[3] = smClient.getString("htmlHostManagerServlet.serverJVMVendor");
args[4] = smClient.getString("htmlHostManagerServlet.serverOSName");
args[5] = smClient.getString("htmlHostManagerServlet.serverOSVersion");
args[6] = smClient.getString("htmlHostManagerServlet.serverOSArch");
writer.print(MessageFormat.format(Constants.SERVER_HEADER_SECTION, args));
// Server Row Section
args = new Object[6];
args[0] = ServerInfo.getServerInfo();
args[1] = System.getProperty("java.runtime.version");
args[2] = System.getProperty("java.vm.vendor");
args[3] = System.getProperty("os.name");
args[4] = System.getProperty("os.version");
args[5] = System.getProperty("os.arch");
writer.print(MessageFormat.format(Constants.SERVER_ROW_SECTION, args));
// HTML Tail Section
writer.print(Constants.HTML_TAIL_SECTION);
// Finish up the response
writer.flush();
writer.close();
}
// ------------------------------------------------------ Private Constants
// These HTML sections are broken in relatively small sections, because of
// limited number of substitutions MessageFormat can process
// (maximum of 10).
//@formatter:off
private static final String HOSTS_HEADER_SECTION =
"<table border=\"1\" cellspacing=\"0\" cellpadding=\"3\">\n" +
"<tr>\n" +
" <td colspan=\"5\" class=\"title\">{0}</td>\n" +
"</tr>\n" +
"<tr>\n" +
" <td class=\"header-left\"><small>{0}</small></td>\n" +
" <td class=\"header-center\"><small>{1}</small></td>\n" +
" <td class=\"header-center\"><small>{2}</small></td>\n" +
"</tr>\n";
private static final String HOSTS_ROW_DETAILS_SECTION =
"<tr>\n" +
" <td class=\"row-left\"><small><a href=\"http://{0}\" " + Constants.REL_EXTERNAL + ">{0}</a>" +
"</small></td>\n" +
" <td class=\"row-center\"><small>{1}</small></td>\n";
private static final String MANAGER_HOST_ROW_BUTTON_SECTION =
" <td class=\"row-left\">\n" +
" <small>{4}</small>\n" +
" </td>\n" +
"</tr>\n";
private static final String HOSTS_ROW_BUTTON_SECTION =
" <td class=\"row-left\" NOWRAP>\n" +
" <form class=\"inline\" method=\"POST\" action=\"{0}\">" +
" <small><input type=\"submit\" value=\"{1}\"></small>" +
" </form>\n" +
" <form class=\"inline\" method=\"POST\" action=\"{2}\">" +
" <small><input type=\"submit\" value=\"{3}\"></small>" +
" </form>\n" +
" </td>\n" +
"</tr>\n";
private static final String ADD_SECTION_START =
"</table>\n" +
"<br>\n" +
"<table border=\"1\" cellspacing=\"0\" cellpadding=\"3\">\n" +
"<tr>\n" +
" <td colspan=\"2\" class=\"title\">{0}</td>\n" +
"</tr>\n" +
"<tr>\n" +
" <td colspan=\"2\" class=\"header-left\"><small>{1}</small></td>\n" +
"</tr>\n" +
"<tr>\n" +
" <td colspan=\"2\">\n" +
"<form method=\"post\" action=\"{2}\">\n" +
"<table cellspacing=\"0\" cellpadding=\"3\">\n" +
"<tr>\n" +
" <td class=\"row-right\">\n" +
" <small>{3}</small>\n" +
" </td>\n" +
" <td class=\"row-left\">\n" +
" <input type=\"text\" name=\"name\" size=\"20\">\n" +
" </td>\n" +
"</tr>\n" +
"<tr>\n" +
" <td class=\"row-right\">\n" +
" <small>{4}</small>\n" +
" </td>\n" +
" <td class=\"row-left\">\n" +
" <input type=\"text\" name=\"aliases\" size=\"64\">\n" +
" </td>\n" +
"</tr>\n" +
"<tr>\n" +
" <td class=\"row-right\">\n" +
" <small>{5}</small>\n" +
" </td>\n" +
" <td class=\"row-left\">\n" +
" <input type=\"text\" name=\"appBase\" size=\"64\">\n" +
" </td>\n" +
"</tr>\n" ;
private static final String ADD_SECTION_BOOLEAN =
"<tr>\n" +
" <td class=\"row-right\">\n" +
" <small>{0}</small>\n" +
" </td>\n" +
" <td class=\"row-left\">\n" +
" <input type=\"checkbox\" name=\"{1}\" {2}>\n" +
" </td>\n" +
"</tr>\n" ;
private static final String ADD_SECTION_END =
"<tr>\n" +
" <td class=\"row-right\">\n" +
" \n" +
" </td>\n" +
" <td class=\"row-left\">\n" +
" <input type=\"submit\" value=\"{0}\">\n" +
" </td>\n" +
"</tr>\n" +
"</table>\n" +
"</form>\n" +
"</td>\n" +
"</tr>\n" +
"</table>\n" +
"<br>\n" +
"\n";
private static final String PERSIST_SECTION =
"<table border=\"1\" cellspacing=\"0\" cellpadding=\"3\">\n" +
"<tr>\n" +
" <td class=\"title\">{0}</td>\n" +
"</tr>\n" +
"<tr>\n" +
" <td class=\"row-left\">\n" +
" <form class=\"inline\" method=\"POST\" action=\"{1}\">" +
" <small><input type=\"submit\" value=\"{2}\"></small>" +
" </form> {3}\n" +
" </td>\n" +
"</tr>\n" +
"</table>\n" +
"<br>\n" +
"\n";
//@formatter:on
}