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/*******************************************************************************
* Copyright (c) 2005, 2010 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.baseadaptor.bundlefile;
import java.io.File;
import java.io.IOException;
import java.util.Enumeration;
import java.util.NoSuchElementException;
import org.eclipse.osgi.internal.baseadaptor.AdaptorMsg;
import org.eclipse.osgi.util.NLS;
/**
* A BundleFile that uses a directory as its base file.
* @since 3.2
*/
public class DirBundleFile extends BundleFile {
/**
* Constructs a DirBundleFile
* @param basefile the base file
* @throws IOException
*/
public DirBundleFile(File basefile) throws IOException {
super(basefile);
if (!BundleFile.secureAction.exists(basefile) || !BundleFile.secureAction.isDirectory(basefile)) {
throw new IOException(NLS.bind(AdaptorMsg.ADAPTOR_DIRECTORY_EXCEPTION, basefile));
}
}
public File getFile(String path, boolean nativeCode) {
boolean checkInBundle = path != null && path.indexOf("..") >= 0; //$NON-NLS-1$
File file = new File(basefile, path);
if (!BundleFile.secureAction.exists(file)) {
return null;
}
// must do an extra check to make sure file is within the bundle (bug 320546)
if (checkInBundle) {
try {
if (!BundleFile.secureAction.getCanonicalPath(file).startsWith(BundleFile.secureAction.getCanonicalPath(basefile)))
return null;
} catch (IOException e) {
return null;
}
}
return file;
}
public BundleEntry getEntry(String path) {
File filePath = getFile(path, false);
if (filePath == null)
return null;
return new FileBundleEntry(filePath, path);
}
public boolean containsDir(String dir) {
File dirPath = getFile(dir, false);
return dirPath != null && BundleFile.secureAction.isDirectory(dirPath);
}
public Enumeration<String> getEntryPaths(String path) {
if (path.length() > 0 && path.charAt(0) == '/')
path = path.substring(1);
final File pathFile = getFile(path, false);
if (pathFile == null || !BundleFile.secureAction.isDirectory(pathFile))
return null;
final String[] fileList = BundleFile.secureAction.list(pathFile);
if (fileList == null || fileList.length == 0)
return null;
final String dirPath = path.length() == 0 || path.charAt(path.length() - 1) == '/' ? path : path + '/';
return new Enumeration<String>() {
int cur = 0;
public boolean hasMoreElements() {
return fileList != null && cur < fileList.length;
}
public String nextElement() {
if (!hasMoreElements()) {
throw new NoSuchElementException();
}
java.io.File childFile = new java.io.File(pathFile, fileList[cur]);
StringBuffer sb = new StringBuffer(dirPath).append(fileList[cur++]);
if (BundleFile.secureAction.isDirectory(childFile)) {
sb.append("/"); //$NON-NLS-1$
}
return sb.toString();
}
};
}
public void close() {
// nothing to do.
}
public void open() {
// nothing to do.
}
}
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