Examples with DHCP6 org.onlab.packet.DHCP6 used on opensource projects

Example 26 with DHCP6

use of org.onlab.packet.DHCP6 in project onos by opennetworkinglab.

the class Dhcp6Test method deserializeAdvertise.

/**
 * Test deserialize advertise message.
 *
 * @throws Exception exception while deserialize the DHCPv6 payload
 */
@Test
public void deserializeAdvertise() throws Exception {
    byte[] data = Resources.toByteArray(getClass().getResource(ADVERTISE));
    Ethernet eth = Ethernet.deserializer().deserialize(data, 0, data.length);
    DHCP6 dhcp6 = (DHCP6) eth.getPayload().getPayload().getPayload();
    assertEquals(dhcp6.getMsgType(), DHCP6.MsgType.ADVERTISE.value());
    assertEquals(dhcp6.getTransactionId(), XID_1);
    assertEquals(dhcp6.getOptions().size(), 3);
    // IA NA
    Dhcp6Option option = dhcp6.getOptions().get(0);
    assertTrue(option instanceof Dhcp6IaNaOption);
    Dhcp6IaNaOption iaNaOption = (Dhcp6IaNaOption) option;
    assertEquals(iaNaOption.getCode(), DHCP6.OptionCode.IA_NA.value());
    assertEquals(iaNaOption.getLength(), 40);
    assertEquals(iaNaOption.getIaId(), IA_ID);
    assertEquals(iaNaOption.getT1(), T1_SERVER);
    assertEquals(iaNaOption.getT2(), T2_SERVER);
    assertEquals(iaNaOption.getOptions().size(), 1);
    // IA Address (in IA NA)
    assertTrue(iaNaOption.getOptions().get(0) instanceof Dhcp6IaAddressOption);
    Dhcp6IaAddressOption iaAddressOption = (Dhcp6IaAddressOption) iaNaOption.getOptions().get(0);
    assertEquals(iaAddressOption.getIp6Address(), IA_ADDRESS);
    assertEquals(iaAddressOption.getPreferredLifetime(), PREFFERRED_LT_SERVER);
    assertEquals(iaAddressOption.getValidLifetime(), VALID_LT_SERVER);
    assertNull(iaAddressOption.getOptions());
    // Client ID
    option = dhcp6.getOptions().get(1);
    assertTrue(option instanceof Dhcp6ClientIdOption);
    Dhcp6ClientIdOption clientIdOption = (Dhcp6ClientIdOption) option;
    assertEquals(clientIdOption.getCode(), DHCP6.OptionCode.CLIENTID.value());
    assertEquals(clientIdOption.getLength(), 14);
    assertEquals(clientIdOption.getDuid().getDuidType(), Dhcp6Duid.DuidType.DUID_LLT);
    assertEquals(clientIdOption.getDuid().getHardwareType(), 1);
    assertEquals(clientIdOption.getDuid().getDuidTime(), CLIENT_DUID_TIME);
    assertArrayEquals(clientIdOption.getDuid().getLinkLayerAddress(), CLIENT_MAC.toBytes());
    // Server ID
    option = dhcp6.getOptions().get(2);
    assertEquals(option.getCode(), DHCP6.OptionCode.SERVERID.value());
    assertEquals(option.getLength(), 14);
    Dhcp6Duid serverDuid = Dhcp6Duid.deserializer().deserialize(option.getData(), 0, option.getData().length);
    assertEquals(serverDuid.getDuidType(), Dhcp6Duid.DuidType.DUID_LLT);
    assertEquals(serverDuid.getDuidTime(), 0x211e5340);
    assertEquals(serverDuid.getHardwareType(), 1);
    assertArrayEquals(serverDuid.getLinkLayerAddress(), SERVER_MAC.toBytes());
    assertArrayEquals(data, eth.serialize());
}

Example 27 with DHCP6

use of org.onlab.packet.DHCP6 in project onos by opennetworkinglab.

the class Dhcp6HandlerImpl method processDhcpPacket.

@Override
public void processDhcpPacket(PacketContext context, BasePacket payload) {
    checkNotNull(payload, "DHCP6 payload can't be null");
    checkState(payload instanceof DHCP6, "Payload is not a DHCP6");
    DHCP6 dhcp6Payload = (DHCP6) payload;
    Ethernet receivedPacket = context.inPacket().parsed();
    if (!configured()) {
        log.warn("Missing DHCP6 relay server config. " + "Abort packet processing dhcp6 payload {}", dhcp6Payload);
        return;
    }
    byte msgTypeVal = dhcp6Payload.getMsgType();
    MsgType msgType = DHCP6.MsgType.getType(msgTypeVal);
    log.debug("msgType is {}", msgType);
    ConnectPoint inPort = context.inPacket().receivedFrom();
    if (inPort == null) {
        log.warn("incoming ConnectPoint is null");
    }
    Set<Interface> receivingInterfaces = interfaceService.getInterfacesByPort(inPort);
    // ignore the packets if dhcp client interface is not configured on onos.
    if (receivingInterfaces.isEmpty()) {
        log.warn("Virtual interface is not configured on {}", inPort);
        return;
    }
    if (msgTypeVal == DHCP6.MsgType.LEASEQUERY.value()) {
        List<InternalPacket> ethernetClientPackets = learnRouteFromLeasequery ? processLQ6PacketFromClient(context, receivedPacket, receivingInterfaces, dhcp6Payload) : processDhcp6ForwardOnly(context, receivedPacket, receivingInterfaces, dhcp6Payload);
        for (InternalPacket internalPacket : ethernetClientPackets) {
            forwardPacket(internalPacket);
        }
    } else if (msgTypeVal == DHCP6.MsgType.LEASEQUERY_REPLY.value() && learnRouteFromLeasequery) {
        IPv6 clientIpv6 = (IPv6) receivedPacket.getPayload();
        UDP clientUdp = (UDP) clientIpv6.getPayload();
        DHCP6 clientDhcp6 = (DHCP6) clientUdp.getPayload();
        Interface serverInterface = Dhcp6HandlerUtil.directlyConnected(clientDhcp6) ? getServerInterface() : getIndirectServerInterface();
        InternalPacket ethernetPacketReply = Dhcp6HandlerUtil.processLQ6PacketFromServer(defaultServerInfoList, indirectServerInfoList, serverInterface, interfaceService, hostService, context, receivedPacket, receivingInterfaces);
        if (ethernetPacketReply != null) {
            forwardPacket(ethernetPacketReply);
        }
        handleLeaseQuery6ReplyMsg(context, dhcp6Payload);
    } else if (MSG_TYPE_FROM_CLIENT.contains(msgTypeVal)) {
        List<InternalPacket> ethernetClientPacket = processDhcp6PacketFromClient(context, receivedPacket, receivingInterfaces);
        for (InternalPacket internalPacket : ethernetClientPacket) {
            forwardPacket(internalPacket);
        }
    } else if (MSG_TYPE_FROM_SERVER.contains(msgTypeVal)) {
        log.debug("calling processDhcp6PacketFromServer with RELAY_REPL {}, {}", receivedPacket, dhcp6Payload);
        InternalPacket ethernetPacketReply = processDhcp6PacketFromServer(context, receivedPacket, receivingInterfaces);
        if (ethernetPacketReply != null) {
            forwardPacket(ethernetPacketReply);
        }
    } else {
        log.warn("Not so fast, packet type {} not supported yet", msgTypeVal);
    }
}

Example 28 with DHCP6

use of org.onlab.packet.DHCP6 in project onos by opennetworkinglab.

the class Dhcp6HandlerImpl method processDhcp6PacketFromServer.

/**
 * process the DHCP6 relay-reply packet from dhcp server.
 *
 * @param context packet context
 * @param receivedPacket server ethernet packet
 * @param recevingInterfaces set of server side interfaces
 * @return internalPacket toward client
 */
private InternalPacket processDhcp6PacketFromServer(PacketContext context, Ethernet receivedPacket, Set<Interface> recevingInterfaces) {
    // get dhcp6 header.
    Ethernet etherReply = receivedPacket.duplicate();
    IPv6 ipv6Packet = (IPv6) etherReply.getPayload();
    UDP udpPacket = (UDP) ipv6Packet.getPayload();
    DHCP6 dhcp6Relay = (DHCP6) udpPacket.getPayload();
    Boolean directConnFlag = Dhcp6HandlerUtil.directlyConnected(dhcp6Relay);
    DHCP6 embeddedDhcp6 = dhcp6Relay.getOptions().stream().filter(opt -> opt instanceof Dhcp6RelayOption).map(BasePacket::getPayload).map(pld -> (DHCP6) pld).findFirst().orElse(null);
    ConnectPoint inPort = context.inPacket().receivedFrom();
    DhcpServerInfo foundServerInfo = findServerInfoFromServer(directConnFlag, inPort);
    if (foundServerInfo == null) {
        log.warn("Cannot find server info for {} server, inPort {}", directConnFlag ? "direct" : "indirect", inPort);
        // dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_SERVER_INFO);
        return null;
    } else {
        if (Dhcp6HandlerUtil.isServerIpEmpty(foundServerInfo)) {
            log.warn("Cannot find server info's ipaddress");
            // dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_SERVER_IP6ADDR);
            return null;
        }
    }
    Dhcp6InterfaceIdOption interfaceIdOption = dhcp6Relay.getOptions().stream().filter(opt -> opt instanceof Dhcp6InterfaceIdOption).map(opt -> (Dhcp6InterfaceIdOption) opt).findFirst().orElse(null);
    if (interfaceIdOption == null) {
        log.warn("Interface Id option is not present, abort packet...");
        // dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.OPTION_MISSING_FAIL);
        return null;
    }
    MacAddress peerMac = interfaceIdOption.getMacAddress();
    String clientConnectionPointStr = new String(interfaceIdOption.getInPort());
    ConnectPoint clientConnectionPoint = ConnectPoint.deviceConnectPoint(clientConnectionPointStr);
    VlanId vlanIdInUse = VlanId.vlanId(interfaceIdOption.getVlanId());
    log.debug("processDhcp6PacketFromServer Interface Id Mac {}, port{}, vlan {}", peerMac, clientConnectionPointStr, vlanIdInUse);
    Interface clientInterface = interfaceService.getInterfacesByPort(clientConnectionPoint).stream().filter(iface -> Dhcp6HandlerUtil.interfaceContainsVlan(iface, vlanIdInUse)).findFirst().orElse(null);
    if (clientInterface == null) {
        log.warn("Cannot get client interface for from packet, abort... vlan {}", vlanIdInUse.toString());
        // dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_MATCHING_INTF);
        return null;
    }
    etherReply.setVlanID(vlanIdInUse.toShort());
    MacAddress relayAgentMac = clientInterface.mac();
    if (relayAgentMac == null) {
        log.warn("Can not get client interface mac, abort packet..");
        // dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_CLIENT_INTF_MAC);
        return null;
    }
    etherReply.setSourceMACAddress(relayAgentMac);
    // find destMac
    MacAddress clientMac;
    Ip6Address peerAddress = Ip6Address.valueOf(dhcp6Relay.getPeerAddress());
    Set<Host> clients = hostService.getHostsByIp(peerAddress);
    if (clients.isEmpty()) {
        log.trace("There's no host found for this address {}", HexString.toHexString(dhcp6Relay.getPeerAddress(), ":"));
        log.trace("Let's look up interfaceId {}", HexString.toHexString(peerMac.toBytes(), ":"));
        clientMac = peerMac;
    } else {
        clientMac = clients.iterator().next().mac();
        if (clientMac == null) {
            log.warn("No client mac address found, abort packet...");
            // dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_CLIENT_INTF_MAC);
            return null;
        }
        log.trace("Client mac address found from getHostByIp");
    }
    etherReply.setDestinationMACAddress(clientMac);
    // ip header
    ipv6Packet.setSourceAddress(dhcp6Relay.getLinkAddress());
    ipv6Packet.setDestinationAddress(dhcp6Relay.getPeerAddress());
    // udp header
    udpPacket.setSourcePort(UDP.DHCP_V6_SERVER_PORT);
    if (directConnFlag) {
        udpPacket.setDestinationPort(UDP.DHCP_V6_CLIENT_PORT);
    } else {
        udpPacket.setDestinationPort(UDP.DHCP_V6_SERVER_PORT);
    }
    boolean hostOrRouteAllowed = learnRouteFromLeasequery || Dhcp6HandlerUtil.getDhcp6LeafMessageType(dhcp6Relay) != MsgType.LEASEQUERY_REPLY;
    log.debug("Can add host or route: {}", hostOrRouteAllowed);
    if (hostOrRouteAllowed) {
        // add host or route
        addHostOrRoute(directConnFlag, clientConnectionPoint, dhcp6Relay, embeddedDhcp6, clientMac, clientInterface, vlanIdInUse);
    }
    udpPacket.setPayload(embeddedDhcp6);
    udpPacket.resetChecksum();
    ipv6Packet.setPayload(udpPacket);
    etherReply.setPayload(ipv6Packet);
    return InternalPacket.internalPacket(etherReply, clientConnectionPoint);
}

Example 29 with DHCP6

use of org.onlab.packet.DHCP6 in project onos by opennetworkinglab.

the class Dhcp6HandlerImpl method processLQ6PacketFromClient.

private List<InternalPacket> processLQ6PacketFromClient(PacketContext context, Ethernet clientPacket, Set<Interface> clientInterfaces, DHCP6 dhcp6Payload) {
    ConnectPoint inPort = context.inPacket().receivedFrom();
    log.info("Got LQ-REQUEST V6 on port {}", inPort);
    List<Dhcp6Option> lopt = dhcp6Payload.getOptions();
    log.info("Options list: {}", lopt);
    Dhcp6LeaseQueryOption lqoption = dhcp6Payload.getOptions().stream().filter(opt -> opt instanceof Dhcp6LeaseQueryOption).map(pld -> (Dhcp6LeaseQueryOption) pld).findFirst().orElse(null);
    if (lqoption == null) {
        // Can't find dhcp payload
        log.warn("Can't find dhcp6 lease query message - aborting");
        return null;
    } else {
        log.info("dhcp6 lqv6 options found: {}", lqoption);
    }
    log.warn("LQv6 for " + lqoption.linkAddress.toString() + " comes from " + inPort.toString());
    Ethernet packet = context.inPacket().parsed();
    Ip6Address clientAddress = lqoption.linkAddress;
    IPv6 ipv6Packet = (IPv6) packet.getPayload();
    Ip6Address nextHopIp = findNextHopIp6FromRelayStore(clientAddress);
    // 1. only if there is a route to remove - remove it
    if (nextHopIp != null) {
        Route routeForIP6 = new Route(Route.Source.DHCP, clientAddress.toIpPrefix(), nextHopIp);
        log.debug("Removing route of Client " + clientAddress + " for indirectly connected - next hop ip6 " + nextHopIp);
        routeStore.removeRoute(routeForIP6);
    }
    // 2. note the potential NH this packet came from in case it's a known lease
    // this NH will then be used to build the route
    MacAddress potentialNH = packet.getSourceMAC();
    VlanId vlanId = VlanId.vlanId(packet.getVlanID());
    setPotentialNextHopForIp6InRelayStore(clientAddress, vlanId, potentialNH);
    // 3. route this LQ6 to all relevant servers
    IPv6 clientIpv6 = (IPv6) clientPacket.getPayload();
    UDP clientUdp = (UDP) clientIpv6.getPayload();
    DHCP6 clientDhcp6 = (DHCP6) clientUdp.getPayload();
    boolean directConnFlag = Dhcp6HandlerUtil.directlyConnected(clientDhcp6);
    boolean serverFound = false;
    List<InternalPacket> internalPackets = new ArrayList<>();
    List<DhcpServerInfo> serverInfoList = findValidServerInfo(directConnFlag);
    List<DhcpServerInfo> copyServerInfoList = new ArrayList<DhcpServerInfo>(serverInfoList);
    for (DhcpServerInfo serverInfo : copyServerInfoList) {
        if (!Dhcp6HandlerUtil.checkDhcpServerConnPt(directConnFlag, serverInfo)) {
            log.warn("Can't get server connect point, ignore");
            continue;
        }
        DhcpServerInfo newServerInfo = getHostInfoForServerInfo(serverInfo, serverInfoList);
        if (newServerInfo == null) {
            log.debug("Can't get server interface with host info resolved, ignore serverInfo {} serverInfoList {}", serverInfo, serverInfoList);
            continue;
        }
        Interface serverInterface = getServerInterface(newServerInfo);
        if (serverInterface == null) {
            log.debug("Can't get server interface, ignore for serverInfo {}, serverInfoList {}", serverInfo, serverInfoList);
            continue;
        }
        serverFound = true;
        log.debug("Server Info Found {}", serverInfo.getDhcpConnectMac());
        Ethernet etherRouted = (Ethernet) clientPacket.clone();
        MacAddress macFacingServer = serverInterface.mac();
        if (macFacingServer == null) {
            log.warn("No MAC address for server Interface {}", serverInterface);
            return null;
        }
        etherRouted.setSourceMACAddress(macFacingServer);
        etherRouted.setDestinationMACAddress(newServerInfo.getDhcpConnectMac().get());
        InternalPacket internalPacket = InternalPacket.internalPacket(etherRouted, serverInfo.getDhcpServerConnectPoint().get());
        internalPackets.add(internalPacket);
        log.debug("Sending LQ to DHCP server {}", newServerInfo.getDhcpServerIp6());
    }
    if (!serverFound) {
        log.warn("ProcessDhcp6PacketFromClient No Server Found");
    }
    log.debug("num of client packets to send is{}", internalPackets.size());
    return internalPackets;
}

Example 30 with DHCP6

use of org.onlab.packet.DHCP6 in project onos by opennetworkinglab.

the class Dhcp6HandlerImpl method processDhcp6PacketFromClient.

/**
 * build the DHCP6 solicit/request packet with gatewayip.
 *
 * @param context packet context
 * @param clientPacket client ethernet packet
 * @param clientInterfaces set of client side interfaces
 */
private List<InternalPacket> processDhcp6PacketFromClient(PacketContext context, Ethernet clientPacket, Set<Interface> clientInterfaces) {
    ConnectPoint receivedFrom = context.inPacket().receivedFrom();
    Ip6Address relayAgentIp = Dhcp6HandlerUtil.getRelayAgentIPv6Address(clientInterfaces);
    MacAddress relayAgentMac = clientInterfaces.iterator().next().mac();
    if (relayAgentIp == null || relayAgentMac == null) {
        log.warn("Missing DHCP relay agent interface Ipv6 addr config for " + "packet from client on port: {}. Aborting packet processing", clientInterfaces.iterator().next().connectPoint());
        // dhcpRelayCountersStore.incrementCounter(gCount, DhcpRelayCounters.NO_CLIENT_INTF_MAC);
        return Lists.newArrayList();
    }
    IPv6 clientIpv6 = (IPv6) clientPacket.getPayload();
    UDP clientUdp = (UDP) clientIpv6.getPayload();
    DHCP6 clientDhcp6 = (DHCP6) clientUdp.getPayload();
    boolean directConnFlag = Dhcp6HandlerUtil.directlyConnected(clientDhcp6);
    ConnectPoint clientConnectionPoint = context.inPacket().receivedFrom();
    VlanId vlanIdInUse = VlanId.vlanId(clientPacket.getVlanID());
    Interface clientInterface = interfaceService.getInterfacesByPort(clientConnectionPoint).stream().filter(iface -> Dhcp6HandlerUtil.interfaceContainsVlan(iface, vlanIdInUse)).findFirst().orElse(null);
    List<InternalPacket> internalPackets = new ArrayList<>();
    List<DhcpServerInfo> serverInfoList = findValidServerInfo(directConnFlag);
    List<DhcpServerInfo> copyServerInfoList = new ArrayList<DhcpServerInfo>(serverInfoList);
    for (DhcpServerInfo serverInfo : copyServerInfoList) {
        if (!Dhcp6HandlerUtil.checkDhcpServerConnPt(directConnFlag, serverInfo)) {
            log.warn("Can't get server connect point, ignore");
            continue;
        }
        DhcpServerInfo newServerInfo = getHostInfoForServerInfo(serverInfo, serverInfoList);
        if (newServerInfo == null) {
            log.warn("Can't get server interface with host info resolved, ignore");
            continue;
        }
        Interface serverInterface = getServerInterface(newServerInfo);
        if (serverInterface == null) {
            log.warn("Can't get server interface, ignore");
            continue;
        }
        Ethernet etherReply = Dhcp6HandlerUtil.buildDhcp6PacketFromClient(context, clientPacket, clientInterfaces, newServerInfo, serverInterface);
        removeHostOrRoute(directConnFlag, clientConnectionPoint, clientDhcp6, clientPacket, clientIpv6, clientInterface);
        InternalPacket internalPacket = InternalPacket.internalPacket(etherReply, serverInfo.getDhcpServerConnectPoint().get());
        internalPackets.add(internalPacket);
    }
    log.debug("num of client packets to send is{}", internalPackets.size());
    return internalPackets;
}