/*
* 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.webresources;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.attribute.BasicFileAttributes;
import java.security.cert.Certificate;
import java.util.jar.Manifest;
import org.apache.catalina.WebResourceRoot;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
/**
* Represents a single resource (file or directory) that is located on a file
* system.
*/
public class FileResource extends AbstractResource {
private static final Log log = LogFactory.getLog(FileResource.class);
private final File resource;
private final String name;
public FileResource(WebResourceRoot root, String webAppPath,
File resource) {
super(root,webAppPath);
this.resource = resource;
if (webAppPath.charAt(webAppPath.length() - 1) == '/') {
String realName = resource.getName() + '/';
if (webAppPath.endsWith(realName)) {
name = resource.getName();
} else {
// This is the root directory of a mounted ResourceSet
// Need to return the mounted name, not the real name
int endOfName = webAppPath.length() - 1;
name = webAppPath.substring(
webAppPath.lastIndexOf("/", endOfName - 1) + 1,
endOfName);
}
} else {
// Must be a file
name = resource.getName();
}
}
@Override
public long getLastModified() {
return resource.lastModified();
}
@Override
public boolean exists() {
return resource.exists();
}
@Override
public boolean isVirtual() {
return false;
}
@Override
public boolean isDirectory() {
return resource.isDirectory();
}
@Override
public boolean isFile() {
return resource.isFile();
}
@Override
public boolean delete() {
return resource.delete();
}
@Override
public String getName() {
return name;
}
@Override
public long getContentLength() {
return resource.length();
}
@Override
public String getCanonicalPath() {
try {
return resource.getCanonicalPath();
} catch (IOException ioe) {
if (log.isDebugEnabled()) {
log.debug(sm.getString("fileResource.getCanonicalPathFail",
resource.getPath()), ioe);
}
return null;
}
}
@Override
public boolean canRead() {
return resource.canRead();
}
@Override
protected InputStream doGetInputStream() {
try {
return new FileInputStream(resource);
} catch (FileNotFoundException fnfe) {
// Race condition (file has been deleted) - not an error
return null;
}
}
@Override
public final byte[] getContent() {
long len = getContentLength();
if (len > Integer.MAX_VALUE) {
// Can't create an array that big
throw new ArrayIndexOutOfBoundsException(sm.getString(
"abstractResource.getContentTooLarge", getWebappPath(),
Long.valueOf(len)));
}
int size = (int) len;
byte[] result = new byte[size];
int pos = 0;
try (InputStream is = new FileInputStream(resource)) {
while (pos < size) {
int n = is.read(result, pos, size - pos);
if (n < 0) {
break;
}
pos += n;
}
} catch (IOException ioe) {
if (getLog().isDebugEnabled()) {
getLog().debug(sm.getString("abstractResource.getContentFail",
getWebappPath()), ioe);
}
}
return result;
}
@Override
public long getCreation() {
try {
BasicFileAttributes attrs = Files.readAttributes(resource.toPath(),
BasicFileAttributes.class);
return attrs.creationTime().toMillis();
} catch (IOException e) {
if (log.isDebugEnabled()) {
log.debug(sm.getString("fileResource.getCreationFail",
resource.getPath()), e);
}
return 0;
}
}
@Override
public URL getURL() {
if (resource.exists()) {
try {
return resource.toURI().toURL();
} catch (MalformedURLException e) {
if (log.isDebugEnabled()) {
log.debug(sm.getString("fileResource.getUrlFail",
resource.getPath()), e);
}
return null;
}
} else {
return null;
}
}
@Override
public Certificate[] getCertificates() {
return null;
}
@Override
public Manifest getManifest() {
return null;
}
@Override
protected Log getLog() {
return log;
}
}