/**
* 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.hadoop.gateway.filter;
import org.apache.commons.codec.binary.Base64;
import org.apache.http.auth.AUTH;
import org.apache.http.auth.UsernamePasswordCredentials;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
*
*/
//TODO: Remove the Authenticate header from the expect so that downstream filters and dispatch don't see it.
public class BasicAuthChallengeFilter extends AbstractGatewayFilter {
@Override
public void doFilter( HttpServletRequest request, HttpServletResponse response, FilterChain chain ) throws IOException, ServletException {
//KAM:2013014[ Removing due to dependency issues. This class isn't used anyway
// boolean challenge = false;
//
// // If the user isn't already authenticated.
// if( Subject.getSubject( AccessController.getContext() ) == null ) {
// UsernamePasswordCredentials credentials = createValidatedCredentials( request );
// if( credentials == null ) {
// challenge = true;
// } else {
// setUserCredentials( request, credentials );
// }
// }
// if( challenge ) {
// response.setHeader( AUTH.WWW_AUTH, "Basic realm=\"" + getConfig().getInitParameter( "realm" ) + "\"" );
// response.sendError( HttpServletResponse.SC_UNAUTHORIZED );
// } else {
// chain.doFilter( request, response );
// if( HttpServletResponse.SC_UNAUTHORIZED == response.getStatus() &&
// response.getHeader( AUTH.WWW_AUTH ) == null ) {
// response.setHeader( AUTH.WWW_AUTH, "Basic realm=\"" + getConfig().getInitParameter( "realm" ) + "\"" );
// }
// }
}
private static UsernamePasswordCredentials createValidatedCredentials( HttpServletRequest request ) {
UsernamePasswordCredentials credentials = null;
String basicAuthResponse = request.getHeader( AUTH.WWW_AUTH_RESP );
if( basicAuthResponse != null ) {
String[] parts = basicAuthResponse.split( " " );
if( parts.length == 2 ) {
String usernamePassword = new String( Base64.decodeBase64( parts[1] ) );
parts = usernamePassword.split( ":" );
if( parts.length == 2 ) {
String username = parts[0];
String password = parts[1];
if( username.length() > 0 && password.length() > 0 ) {
credentials = new UsernamePasswordCredentials( username, password );
}
}
}
//System.out.println( basicAuthResponse );
}
return credentials;
}
}