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AuthFilter.java
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/*
* Copyright (c) 2006, 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.
*/
package robaho.net.httpserver;
import com.sun.net.httpserver.*;
import java.io.*;
public class AuthFilter extends Filter {
private Authenticator authenticator;
public AuthFilter(Authenticator authenticator) {
this.authenticator = authenticator;
}
public String description() {
return "Authentication filter";
}
public void setAuthenticator(Authenticator a) {
authenticator = a;
}
public void consumeInput(HttpExchange t) throws IOException {
InputStream i = t.getRequestBody();
byte[] b = new byte[4096];
while (i.read(b) != -1)
;
i.close();
}
/**
* The filter's implementation, which is invoked by the server
*/
public void doFilter(HttpExchange t, Filter.Chain chain) throws IOException {
if (authenticator != null) {
Authenticator.Result r = authenticator.authenticate(t);
if (r instanceof Authenticator.Success) {
Authenticator.Success s = (Authenticator.Success) r;
ExchangeImpl e = ExchangeImpl.get(t);
e.setPrincipal(s.getPrincipal());
chain.doFilter(t);
} else if (r instanceof Authenticator.Retry) {
Authenticator.Retry ry = (Authenticator.Retry) r;
consumeInput(t);
t.sendResponseHeaders(ry.getResponseCode(), -1);
} else if (r instanceof Authenticator.Failure) {
Authenticator.Failure f = (Authenticator.Failure) r;
consumeInput(t);
t.sendResponseHeaders(f.getResponseCode(), -1);
}
} else {
chain.doFilter(t);
}
}
}