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/*
* 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.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.JarURLConnection;
import java.net.URL;
import java.nio.channels.FileChannel;
import java.util.Enumeration;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.zip.ZipException;
import org.apache.catalina.Globals;
import org.apache.catalina.Host;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
import org.apache.tomcat.util.ExceptionUtils;
import org.apache.tomcat.util.res.StringManager;
/**
* Expand out a WAR in a Host's appBase.
*
* @author Craig R. McClanahan
* @author Remy Maucherat
* @author Glenn L. Nielsen
* @version $Revision: 1329119 $
*/
public class ExpandWar {
private static final Log log = LogFactory.getLog(ExpandWar.class);
/**
* The string resources for this package.
*/
protected static final StringManager sm =
StringManager.getManager(Constants.Package);
/**
* Expand the WAR file found at the specified URL into an unpacked
* directory structure, and return the absolute pathname to the expanded
* directory.
*
* @param host Host war is being installed for
* @param war URL of the web application archive to be expanded
* (must start with "jar:")
* @param pathname Context path name for web application
*
* @exception IllegalArgumentException if this is not a "jar:" URL or if the
* WAR file is invalid
* @exception IOException if an input/output error was encountered
* during expansion
*/
public static String expand(Host host, URL war, String pathname)
throws IOException {
// Make sure that there is no such directory already existing
File appBase = new File(host.getAppBase());
if (!appBase.isAbsolute()) {
appBase = new File(System.getProperty(Globals.CATALINA_BASE_PROP),
host.getAppBase());
}
if (!appBase.exists() || !appBase.isDirectory()) {
throw new IOException
(sm.getString("hostConfig.appBase",
appBase.getAbsolutePath()));
}
File docBase = new File(appBase, pathname);
if (docBase.exists()) {
// War file is already installed
return (docBase.getAbsolutePath());
}
// Create the new document base directory
docBase.mkdir();
// Expand the WAR into the new document base directory
String canonicalDocBasePrefix = docBase.getCanonicalPath();
if (!canonicalDocBasePrefix.endsWith(File.separator)) {
canonicalDocBasePrefix += File.separator;
}
JarURLConnection juc = (JarURLConnection) war.openConnection();
juc.setUseCaches(false);
JarFile jarFile = null;
InputStream input = null;
boolean success = false;
try {
jarFile = juc.getJarFile();
Enumeration jarEntries = jarFile.entries();
while (jarEntries.hasMoreElements()) {
JarEntry jarEntry = jarEntries.nextElement();
String name = jarEntry.getName();
File expandedFile = new File(docBase, name);
if (!expandedFile.getCanonicalPath().startsWith(
canonicalDocBasePrefix)) {
// Trying to expand outside the docBase
// Throw an exception to stop the deployment
throw new IllegalArgumentException(
sm.getString("expandWar.illegalPath",war, name,
expandedFile.getCanonicalPath(),
canonicalDocBasePrefix));
}
int last = name.lastIndexOf('/');
if (last >= 0) {
File parent = new File(docBase,
name.substring(0, last));
if (!parent.mkdirs() && !parent.isDirectory()) {
throw new IOException(
sm.getString("expandWar.createFailed", parent));
}
}
if (name.endsWith("/")) {
continue;
}
input = jarFile.getInputStream(jarEntry);
if(null == input)
throw new ZipException(sm.getString("expandWar.missingJarEntry", jarEntry.getName()));
// Bugzilla 33636
expand(input, expandedFile);
long lastModified = jarEntry.getTime();
if ((lastModified != -1) && (lastModified != 0)) {
expandedFile.setLastModified(lastModified);
}
input.close();
input = null;
}
success = true;
} catch (IOException e) {
throw e;
} finally {
if (!success) {
// If something went wrong, delete expanded dir to keep things
// clean
deleteDir(docBase);
}
if (input != null) {
try {
input.close();
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
}
input = null;
}
if (jarFile != null) {
try {
jarFile.close();
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
}
jarFile = null;
}
}
// Return the absolute path to our new document base directory
return (docBase.getAbsolutePath());
}
/**
* Validate the WAR file found at the specified URL.
*
* @param host Host war is being installed for
* @param war URL of the web application archive to be validated
* (must start with "jar:")
* @param pathname Context path name for web application
*
* @exception IllegalArgumentException if this is not a "jar:" URL or if the
* WAR file is invalid
* @exception IOException if an input/output error was encountered
* during validation
*/
public static void validate(Host host, URL war, String pathname)
throws IOException {
// Make the appBase absolute
File appBase = new File(host.getAppBase());
if (!appBase.isAbsolute()) {
appBase = new File(System.getProperty(Globals.CATALINA_BASE_PROP),
host.getAppBase());
}
File docBase = new File(appBase, pathname);
// Calculate the document base directory
String canonicalDocBasePrefix = docBase.getCanonicalPath();
if (!canonicalDocBasePrefix.endsWith(File.separator)) {
canonicalDocBasePrefix += File.separator;
}
JarURLConnection juc = (JarURLConnection) war.openConnection();
juc.setUseCaches(false);
JarFile jarFile = null;
try {
jarFile = juc.getJarFile();
Enumeration jarEntries = jarFile.entries();
while (jarEntries.hasMoreElements()) {
JarEntry jarEntry = jarEntries.nextElement();
String name = jarEntry.getName();
File expandedFile = new File(docBase, name);
if (!expandedFile.getCanonicalPath().startsWith(
canonicalDocBasePrefix)) {
// Entry located outside the docBase
// Throw an exception to stop the deployment
throw new IllegalArgumentException(
sm.getString("expandWar.illegalPath",war, name,
expandedFile.getCanonicalPath(),
canonicalDocBasePrefix));
}
}
} catch (IOException e) {
throw e;
} finally {
if (jarFile != null) {
try {
jarFile.close();
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
}
jarFile = null;
}
}
}
/**
* Copy the specified file or directory to the destination.
*
* @param src File object representing the source
* @param dest File object representing the destination
*/
public static boolean copy(File src, File dest) {
boolean result = true;
String files[] = null;
if (src.isDirectory()) {
files = src.list();
result = dest.mkdir();
} else {
files = new String[1];
files[0] = "";
}
if (files == null) {
files = new String[0];
}
for (int i = 0; (i < files.length) && result; i++) {
File fileSrc = new File(src, files[i]);
File fileDest = new File(dest, files[i]);
if (fileSrc.isDirectory()) {
result = copy(fileSrc, fileDest);
} else {
FileChannel ic = null;
FileChannel oc = null;
try {
ic = (new FileInputStream(fileSrc)).getChannel();
oc = (new FileOutputStream(fileDest)).getChannel();
ic.transferTo(0, ic.size(), oc);
} catch (IOException e) {
log.error(sm.getString
("expandWar.copy", fileSrc, fileDest), e);
result = false;
} finally {
if (ic != null) {
try {
ic.close();
} catch (IOException e) {
}
}
if (oc != null) {
try {
oc.close();
} catch (IOException e) {
}
}
}
}
}
return result;
}
/**
* Delete the specified directory, including all of its contents and
* sub-directories recursively. Any failure will be logged.
*
* @param dir File object representing the directory to be deleted
*/
public static boolean delete(File dir) {
// Log failure by default
return delete(dir, true);
}
/**
* Delete the specified directory, including all of its contents and
* sub-directories recursively.
*
* @param dir File object representing the directory to be deleted
* @param logFailure true if failure to delete the resource
* should be logged
*/
public static boolean delete(File dir, boolean logFailure) {
boolean result;
if (dir.isDirectory()) {
result = deleteDir(dir, logFailure);
} else {
if (dir.exists()) {
result = dir.delete();
} else {
result = true;
}
}
if (logFailure && !result) {
log.error(sm.getString(
"expandWar.deleteFailed", dir.getAbsolutePath()));
}
return result;
}
/**
* Delete the specified directory, including all of its contents and
* sub-directories recursively. Any failure will be logged.
*
* @param dir File object representing the directory to be deleted
*/
public static boolean deleteDir(File dir) {
return deleteDir(dir, true);
}
/**
* Delete the specified directory, including all of its contents and
* sub-directories recursively.
*
* @param dir File object representing the directory to be deleted
* @param logFailure true if failure to delete the resource
* should be logged
*/
public static boolean deleteDir(File dir, boolean logFailure) {
String files[] = dir.list();
if (files == null) {
files = new String[0];
}
for (int i = 0; i < files.length; i++) {
File file = new File(dir, files[i]);
if (file.isDirectory()) {
deleteDir(file, logFailure);
} else {
file.delete();
}
}
boolean result;
if (dir.exists()) {
result = dir.delete();
} else {
result = true;
}
if (logFailure && !result) {
log.error(sm.getString(
"expandWar.deleteFailed", dir.getAbsolutePath()));
}
return result;
}
/**
* Expand the specified input stream into the specified file.
*
* @param input InputStream to be copied
* @param file The file to be created
*
* @exception IOException if an input/output error occurs
*/
private static void expand(InputStream input, File file)
throws IOException {
BufferedOutputStream output = null;
try {
output =
new BufferedOutputStream(new FileOutputStream(file));
byte buffer[] = new byte[2048];
while (true) {
int n = input.read(buffer);
if (n <= 0)
break;
output.write(buffer, 0, n);
}
} finally {
if (output != null) {
try {
output.close();
} catch (IOException e) {
// Ignore
}
}
}
}
}
