/*
* 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.directory.server.ldap.handlers.bind.cramMD5;
import java.util.HashSet;
import java.util.Set;
import javax.naming.Context;
import javax.security.sasl.AuthorizeCallback;
import org.apache.directory.server.core.api.CoreSession;
import org.apache.directory.server.core.api.LdapPrincipal;
import org.apache.directory.server.core.api.filtering.EntryFilteringCursor;
import org.apache.directory.server.ldap.LdapSession;
import org.apache.directory.server.ldap.handlers.bind.AbstractSaslCallbackHandler;
import org.apache.directory.server.ldap.handlers.bind.SaslConstants;
import org.apache.directory.shared.ldap.model.constants.AuthenticationLevel;
import org.apache.directory.shared.ldap.model.constants.SchemaConstants;
import org.apache.directory.shared.ldap.model.entry.Attribute;
import org.apache.directory.shared.ldap.model.entry.Entry;
import org.apache.directory.shared.ldap.model.filter.ExprNode;
import org.apache.directory.shared.ldap.model.filter.FilterParser;
import org.apache.directory.shared.ldap.model.message.AliasDerefMode;
import org.apache.directory.shared.ldap.model.message.BindRequest;
import org.apache.directory.shared.ldap.model.message.SearchScope;
import org.apache.directory.shared.ldap.model.name.Dn;
import org.apache.directory.shared.ldap.model.schema.AttributeType;
import org.apache.directory.shared.ldap.model.schema.AttributeTypeOptions;
import org.apache.directory.shared.ldap.model.schema.SchemaManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class CramMd5CallbackHandler extends AbstractSaslCallbackHandler
{
private static final Logger LOG = LoggerFactory.getLogger( CramMd5CallbackHandler.class );
private String bindDn;
/** A SchemaManager instance */
private SchemaManager schemaManager;
/**
* Creates a new instance of CramMd5CallbackHandler.
*
* @param ldapSession the mina IoSession
* @param adminSession the admin session
* @param bindRequest the bind message
*/
public CramMd5CallbackHandler( LdapSession ldapSession, CoreSession adminSession, BindRequest bindRequest )
{
super( adminSession.getDirectoryService(), bindRequest );
this.ldapSession = ldapSession;
this.adminSession = adminSession;
schemaManager = adminSession.getDirectoryService().getSchemaManager();
}
protected Attribute lookupPassword( String username, String realm )
{
try
{
ExprNode filter = FilterParser.parse( schemaManager, "(uid=" + username + ")" );
Set<AttributeTypeOptions> returningAttributes = new HashSet<AttributeTypeOptions>();
AttributeType passwordAT = adminSession.getDirectoryService().getSchemaManager()
.lookupAttributeTypeRegistry( SchemaConstants.USER_PASSWORD_AT );
returningAttributes.add( new AttributeTypeOptions( passwordAT ) );
bindDn = ( String ) ldapSession.getSaslProperty( SaslConstants.SASL_USER_BASE_DN );
Dn baseDn = new Dn( bindDn );
EntryFilteringCursor cursor = adminSession.search(
baseDn,
SearchScope.SUBTREE,
filter,
AliasDerefMode.DEREF_ALWAYS,
returningAttributes );
cursor.beforeFirst();
Entry entry = null;
while ( cursor.next() )
{
entry = cursor.get();
LdapPrincipal ldapPrincipal = new LdapPrincipal(
schemaManager,
entry.getDn(),
AuthenticationLevel.STRONG,
entry.get( SchemaConstants.USER_PASSWORD_AT ).getBytes() );
ldapSession.putSaslProperty( SaslConstants.SASL_AUTHENT_USER, ldapPrincipal );
}
cursor.close();
return entry.get( passwordAT );
}
catch ( Exception e )
{
return null;
}
}
protected void authorize( AuthorizeCallback authorizeCB )
{
if ( LOG.isDebugEnabled() )
{
LOG.debug( "Converted username " + getUsername() + " to Dn " + bindDn );
}
ldapSession.putSaslProperty( Context.SECURITY_PRINCIPAL, bindDn );
authorizeCB.setAuthorizedID( bindDn );
authorizeCB.setAuthorized( true );
}
}