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/*
*
* 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.qpid.server.security.auth.sasl;
import org.apache.commons.configuration.Configuration;
import org.apache.log4j.Logger;
import org.apache.qpid.server.security.auth.database.PrincipalDatabase;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.auth.login.AccountNotFoundException;
import javax.security.sasl.AuthorizeCallback;
import java.io.IOException;
import java.security.Principal;
import java.util.Map;
public abstract class UsernamePasswordInitialiser implements AuthenticationProviderInitialiser
{
protected static final Logger _logger = Logger.getLogger(UsernamePasswordInitialiser.class);
private ServerCallbackHandler _callbackHandler;
private static class ServerCallbackHandler implements CallbackHandler
{
private final PrincipalDatabase _principalDatabase;
protected ServerCallbackHandler(PrincipalDatabase database)
{
_principalDatabase = database;
}
public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException
{
Principal username = null;
for (Callback callback : callbacks)
{
if (callback instanceof NameCallback)
{
username = new UsernamePrincipal(((NameCallback) callback).getDefaultName());
}
else if (callback instanceof PasswordCallback)
{
try
{
_principalDatabase.setPassword(username, (PasswordCallback) callback);
}
catch (AccountNotFoundException e)
{
// very annoyingly the callback handler does not throw anything more appropriate than
// IOException
IOException ioe = new IOException("Error looking up user " + e);
ioe.initCause(e);
throw ioe;
}
}
else if (callback instanceof AuthorizeCallback)
{
((AuthorizeCallback) callback).setAuthorized(true);
}
else
{
throw new UnsupportedCallbackException(callback);
}
}
}
}
public void initialise(String baseConfigPath, Configuration configuration,
Map<String, PrincipalDatabase> principalDatabases) throws Exception
{
String principalDatabaseName = configuration.getString(baseConfigPath + ".principal-database");
PrincipalDatabase db = principalDatabases.get(principalDatabaseName);
initialise(db);
}
public void initialise(PrincipalDatabase db)
{
if (db == null)
{
throw new NullPointerException("Cannot initialise with a null Principal database.");
}
_callbackHandler = new ServerCallbackHandler(db);
}
public CallbackHandler getCallbackHandler()
{
return _callbackHandler;
}
public Map<String, ?> getProperties()
{
// there are no properties required for the CRAM-MD5 implementation
return null;
}
}
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