/*
* $Header: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/auth/BasicScheme.java,v 1.4.2.3 2004/02/22 18:21:14 olegk Exp $
* $Revision: 1.4.2.3 $
* $Date: 2004/02/22 18:21:14 $
*
* ====================================================================
*
* Copyright 2002-2004 The Apache Software Foundation
*
* Licensed 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* [Additional notices, if required by prior licensing conditions]
*
*/
package org.apache.commons.httpclient.auth;
import org.apache.commons.httpclient.HttpConstants;
import org.apache.commons.httpclient.Credentials;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.util.Base64;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* <p>
* Basic authentication scheme as defined in RFC 2617.
* </p>
*
* @author <a href="mailto:[email protected]">Remy Maucherat</a>
* @author Rodney Waldhoff
* @author <a href="mailto:[email protected]">Jeff Dever</a>
* @author Ortwin Gl�ck
* @author Sean C. Sullivan
* @author <a href="mailto:[email protected]">Adrian Sutton</a>
* @author <a href="mailto:[email protected]">Mike Bowler</a>
* @author <a href="mailto:[email protected]">Oleg Kalnichevski</a>
*/
public class BasicScheme extends RFC2617Scheme {
/** Log object for this class. */
private static final Log LOG = LogFactory.getLog(BasicScheme.class);
/**
* Constructor for the basic authetication scheme.
*
* @param challenge authentication challenge
*
* @throws MalformedChallengeException is thrown if the authentication challenge
* is malformed
*/
public BasicScheme(final String challenge) throws MalformedChallengeException {
super(challenge);
}
/**
* Returns textual designation of the basic authentication scheme.
*
* @return <code>basic</code>
*/
public String getSchemeName() {
return "basic";
}
/**
* Produces basic authorization string for the given set of
* {@link Credentials}.
*
* @param credentials The set of credentials to be used for athentication
* @param method Method name is ignored by the basic authentication scheme
* @param uri URI is ignored by the basic authentication scheme
* @throws AuthenticationException if authorization string cannot
* be generated due to an authentication failure
*
* @return a basic authorization string
*/
public String authenticate(Credentials credentials, String method, String uri)
throws AuthenticationException {
LOG.trace("enter BasicScheme.authenticate(Credentials, String, String)");
UsernamePasswordCredentials usernamepassword = null;
try {
usernamepassword = (UsernamePasswordCredentials) credentials;
} catch (ClassCastException e) {
throw new AuthenticationException(
"Credentials cannot be used for basic authentication: "
+ credentials.getClass().getName());
}
return BasicScheme.authenticate(usernamepassword);
}
/**
* Return a basic <tt>Authorization</tt> header value for the given
* {@link UsernamePasswordCredentials}.
*
* @param credentials The credentials to encode.
*
* @return a basic authorization string
*/
public static String authenticate(UsernamePasswordCredentials credentials) {
LOG.trace("enter BasicScheme.authenticate(UsernamePasswordCredentials)");
if (credentials == null) {
throw new IllegalArgumentException("Credentials may not be null");
}
StringBuffer buffer = new StringBuffer();
buffer.append(credentials.getUserName());
buffer.append(":");
buffer.append(credentials.getPassword());
return "Basic " + HttpConstants.getAsciiString(
Base64.encode(HttpConstants.getContentBytes(buffer.toString())));
}
}
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