/*
* Copyright (c) 1995, 2004, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* Open an file input stream given a URL.
* @author James Gosling
* @author Steven B. Byrne
*/
package sun.net.www.protocol.file;
import java.net.URL;
import java.net.FileNameMap;
import java.io.*;
import java.text.Collator;
import java.security.Permission;
import sun.net.*;
import sun.net.www.*;
import java.util.*;
import java.text.SimpleDateFormat;
import sun.security.action.GetPropertyAction;
import sun.security.action.GetIntegerAction;
import sun.security.action.GetBooleanAction;
public class FileURLConnection extends URLConnection {
static String CONTENT_LENGTH = "content-length";
static String CONTENT_TYPE = "content-type";
static String TEXT_PLAIN = "text/plain";
static String LAST_MODIFIED = "last-modified";
String contentType;
InputStream is;
File file;
String filename;
boolean isDirectory = false;
boolean exists = false;
List files;
long length = -1;
long lastModified = 0;
protected FileURLConnection(URL u, File file) {
super(u);
this.file = file;
}
/*
* Note: the semantics of FileURLConnection object is that the
* results of the various URLConnection calls, such as
* getContentType, getInputStream or getContentLength reflect
* whatever was true when connect was called.
*/
public void connect() throws IOException {
if (!connected) {
try {
filename = file.toString();
isDirectory = file.isDirectory();
if (isDirectory) {
files = (List) Arrays.asList(file.list());
} else {
is = new BufferedInputStream(new FileInputStream(filename));
// Check if URL should be metered
boolean meteredInput = ProgressMonitor.getDefault().shouldMeterInput(url, "GET");
if (meteredInput) {
ProgressSource pi = new ProgressSource(url, "GET", (int) file.length());
is = new MeteredStream(is, pi, (int) file.length());
}
}
} catch (IOException e) {
throw e;
}
connected = true;
}
}
private boolean initializedHeaders = false;
private void initializeHeaders() {
try {
connect();
exists = file.exists();
} catch (IOException e) {
}
if (!initializedHeaders || !exists) {
length = file.length();
lastModified = file.lastModified();
if (!isDirectory) {
FileNameMap map = java.net.URLConnection.getFileNameMap();
contentType = map.getContentTypeFor(filename);
if (contentType != null) {
properties.add(CONTENT_TYPE, contentType);
}
properties.add(CONTENT_LENGTH, String.valueOf(length));
/*
* Format the last-modified field into the preferred
* Internet standard - ie: fixed-length subset of that
* defined by RFC 1123
*/
if (lastModified != 0) {
Date date = new Date(lastModified);
SimpleDateFormat fo =
new SimpleDateFormat ("EEE, dd MMM yyyy HH:mm:ss 'GMT'", Locale.US);
fo.setTimeZone(TimeZone.getTimeZone("GMT"));
properties.add(LAST_MODIFIED, fo.format(date));
}
} else {
properties.add(CONTENT_TYPE, TEXT_PLAIN);
}
initializedHeaders = true;
}
}
public String getHeaderField(String name) {
initializeHeaders();
return super.getHeaderField(name);
}
public String getHeaderField(int n) {
initializeHeaders();
return super.getHeaderField(n);
}
public int getContentLength() {
initializeHeaders();
return (int) length;
}
public String getHeaderFieldKey(int n) {
initializeHeaders();
return super.getHeaderFieldKey(n);
}
public MessageHeader getProperties() {
initializeHeaders();
return super.getProperties();
}
public long getLastModified() {
initializeHeaders();
return lastModified;
}
public synchronized InputStream getInputStream()
throws IOException {
int iconHeight;
int iconWidth;
connect();
if (is == null) {
if (isDirectory) {
FileNameMap map = java.net.URLConnection.getFileNameMap();
StringBuffer buf = new StringBuffer();
if (files == null) {
throw new FileNotFoundException(filename);
}
Collections.sort(files, Collator.getInstance());
for (int i = 0 ; i < files.size() ; i++) {
String fileName = (String)files.get(i);
buf.append(fileName);
buf.append("\n");
}
// Put it into a (default) locale-specific byte-stream.
is = new ByteArrayInputStream(buf.toString().getBytes());
} else {
throw new FileNotFoundException(filename);
}
}
return is;
}
Permission permission;
/* since getOutputStream isn't supported, only read permission is
* relevant
*/
public Permission getPermission() throws IOException {
if (permission == null) {
String decodedPath = ParseUtil.decode(url.getPath());
if (File.separatorChar == '/') {
permission = new FilePermission(decodedPath, "read");
} else {
permission = new FilePermission(
decodedPath.replace('/',File.separatorChar), "read");
}
}
return permission;
}
}