/*
* @(#)Handler.java 1.8 06/10/10
*
* Copyright 1990-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program 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.
*
* This program 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 at /legal/license.txt).
*
* 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 Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*
*/
package sun.net.www.protocol.file;
import java.net.InetAddress;
import java.net.URLConnection;
import java.net.URL;
import java.net.MalformedURLException;
import java.net.URLStreamHandler;
import java.io.InputStream;
import java.io.IOException;
import sun.net.www.ParseUtil;
import java.io.File;
/**
* Open an file input stream given a URL.
* @author James Gosling
* @version 1.42, 00/02/02
*/
public class Handler extends URLStreamHandler {
private String getHost(URL url) {
String host = url.getHost();
if (host == null)
host = "";
return host;
}
protected void parseURL(URL u, String spec, int start, int limit) {
/*
* Ugly backwards compatibility. Flip any file separator
* characters to be forward slashes. This is a nop on Unix
* and "fixes" win32 file paths. According to RFC 2396,
* only forward slashes may be used to represent hierarchy
* separation in a URL but previous releases unfortunately
* performed this "fixup" behavior in the file URL parsing code
* rather than forcing this to be fixed in the caller of the URL
* class where it belongs. Since backslash is an "unwise"
* character that would normally be encoded if literally intended
* as a non-seperator character the damage of veering away from the
* specification is presumably limited.
*/
super.parseURL(u, spec.replace(File.separatorChar, '/'), start, limit);
}
public synchronized URLConnection openConnection(URL u)
throws IOException {
String host = u.getHost();
if (host == null || host.equals("") || host.equals("~") ||
host.equals("localhost")) {
return new FileURLConnection(u);
}
/* If you reach here, it implies that you have a hostname
so attempt an ftp connection.
*/
/* Commented out, because CDC/Foundation doesn't support FTP
URLConnection uc;
URL ru;
try {
ru = new URL("ftp", host, u.getFile() +
(u.getRef() == null ? "": "#" + u.getRef()));
uc = ru.openConnection();
} catch (IOException e) {
uc = null;
}
if (uc == null) {
throw new IOException("Unable to connect to: " +
u.toExternalForm());
}
return uc;
*/
throw new IOException("URL connection with specified hostname " +
"is not supported. " +
"Only localhost is supported.");
}
}