| /* |
| * 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.dhcp.store; |
| |
| |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.Hashtable; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.naming.Context; |
| import javax.naming.NamingEnumeration; |
| import javax.naming.NamingException; |
| import javax.naming.directory.Attribute; |
| import javax.naming.directory.Attributes; |
| import javax.naming.directory.DirContext; |
| import javax.naming.directory.InitialDirContext; |
| import javax.naming.directory.SearchControls; |
| import javax.naming.directory.SearchResult; |
| |
| import org.apache.directory.api.ldap.model.constants.SchemaConstants; |
| import org.apache.directory.server.dhcp.DhcpException; |
| import org.apache.directory.server.dhcp.messages.HardwareAddress; |
| import org.apache.directory.server.dhcp.options.OptionsField; |
| import org.apache.directory.server.dhcp.service.Lease; |
| |
| |
| /** |
| * Very simple dummy/proof-of-concept implementation of a DhcpStore. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class SimpleDhcpStore extends AbstractDhcpStore |
| { |
| // a map of current leases |
| private Map leases = new HashMap(); |
| |
| private List subnets = new ArrayList(); |
| |
| |
| //This will suppress PMD.AvoidUsingHardCodedIP warnings in this class |
| @SuppressWarnings("PMD.AvoidUsingHardCodedIP") |
| public SimpleDhcpStore() |
| { |
| try |
| { |
| subnets.add( new Subnet( InetAddress.getByName( "192.168.168.0" ), |
| InetAddress.getByName( "255.255.255.0" ), InetAddress.getByName( "192.168.168.159" ), InetAddress |
| .getByName( "192.168.168.179" ) ) ); |
| } |
| catch ( UnknownHostException e ) |
| { |
| throw new RuntimeException( "Can't init", e ); |
| } |
| } |
| |
| |
| protected DirContext getContext() throws NamingException |
| { |
| Hashtable env = new Hashtable(); |
| env.put( Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory" ); |
| env.put( Context.PROVIDER_URL, "ldap://localhost:389/dc=tcat,dc=test" ); |
| |
| return new InitialDirContext( env ); |
| } |
| |
| |
| /** |
| * @param hardwareAddress |
| * @param existingLease |
| * @return Lease |
| */ |
| protected Lease findExistingLease( HardwareAddress hardwareAddress, Lease existingLease ) |
| { |
| if ( leases.containsKey( hardwareAddress ) ) |
| { |
| existingLease = ( Lease ) leases.get( hardwareAddress ); |
| } |
| |
| return existingLease; |
| } |
| |
| |
| /** |
| * @param hardwareAddress |
| * @return Host |
| * @throws DhcpException |
| */ |
| protected Host findDesignatedHost( HardwareAddress hardwareAddress ) throws DhcpException |
| { |
| try |
| { |
| DirContext ctx = getContext(); |
| |
| try |
| { |
| String filter = "(&(objectclass=ipHost)(objectclass=ieee802Device)(macaddress={0}))"; |
| SearchControls sc = new SearchControls(); |
| sc.setCountLimit( 1 ); |
| sc.setSearchScope( SearchControls.SUBTREE_SCOPE ); |
| NamingEnumeration ne = ctx.search( "", filter, new Object[] |
| { hardwareAddress.toString() }, sc ); |
| |
| if ( ne.hasMoreElements() ) |
| { |
| SearchResult sr = ( SearchResult ) ne.next(); |
| Attributes att = sr.getAttributes(); |
| Attribute ipHostNumberAttribute = att.get( "iphostnumber" ); |
| |
| if ( ipHostNumberAttribute != null ) |
| { |
| InetAddress clientAddress = InetAddress.getByName( ( String ) ipHostNumberAttribute.get() ); |
| Attribute cnAttribute = att.get( SchemaConstants.CN_AT ); |
| |
| return new Host( cnAttribute != null ? ( String ) cnAttribute.get() : "unknown", clientAddress, |
| hardwareAddress ); |
| } |
| } |
| } |
| catch ( Exception e ) |
| { |
| throw new DhcpException( "Can't lookup lease", e ); |
| } |
| finally |
| { |
| ctx.close(); |
| } |
| } |
| catch ( NamingException e ) |
| { |
| throw new DhcpException( "Can't lookup lease", e ); |
| } |
| |
| return null; |
| } |
| |
| |
| /** |
| * Find the subnet for the given client address. |
| * |
| * @param clientAddress |
| * @return Subnet |
| */ |
| protected Subnet findSubnet( InetAddress clientAddress ) |
| { |
| for ( Iterator i = subnets.iterator(); i.hasNext(); ) |
| { |
| Subnet subnet = ( Subnet ) i.next(); |
| |
| if ( subnet.contains( clientAddress ) ) |
| { |
| return subnet; |
| } |
| } |
| |
| return null; |
| } |
| |
| |
| /* |
| * @see org.apache.directory.server.dhcp.store.AbstractDhcpStore#updateLease(org.apache.directory.server.dhcp.service.Lease) |
| */ |
| public void updateLease( Lease lease ) |
| { |
| leases.put( lease.getHardwareAddress(), lease ); |
| } |
| |
| |
| /* |
| * @see org.apache.directory.server.dhcp.store.AbstractDhcpStore#getOptions(org.apache.directory.server.dhcp.store.DhcpConfigElement) |
| */ |
| protected OptionsField getOptions( DhcpConfigElement element ) |
| { |
| // we don't have groups, classes, etc. yet. |
| return element.getOptions(); |
| } |
| |
| |
| /* |
| * @see org.apache.directory.server.dhcp.store.AbstractDhcpStore#getProperties(org.apache.directory.server.dhcp.store.DhcpConfigElement) |
| */ |
| protected Map getProperties( DhcpConfigElement element ) |
| { |
| // we don't have groups, classes, etc. yet. |
| return element.getProperties(); |
| } |
| } |