Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 AT&T Foundry |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.aaa; |
| 17 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 18 | import java.net.InetAddress; |
| 19 | import java.net.UnknownHostException; |
| 20 | import java.nio.ByteBuffer; |
| 21 | import java.util.Dictionary; |
| 22 | import java.util.Optional; |
| 23 | import java.util.Set; |
| 24 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 25 | import org.apache.felix.scr.annotations.Activate; |
| 26 | import org.apache.felix.scr.annotations.Component; |
| 27 | import org.apache.felix.scr.annotations.Deactivate; |
| 28 | import org.apache.felix.scr.annotations.Modified; |
| 29 | import org.apache.felix.scr.annotations.Property; |
| 30 | import org.apache.felix.scr.annotations.Reference; |
| 31 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 32 | import org.onlab.packet.DeserializationException; |
| 33 | import org.onlab.packet.EAP; |
| 34 | import org.onlab.packet.EAPOL; |
| 35 | import org.onlab.packet.EthType; |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 36 | import org.onlab.packet.Ethernet; |
| 37 | import org.onlab.packet.IPv4; |
| 38 | import org.onlab.packet.Ip4Address; |
| 39 | import org.onlab.packet.IpAddress; |
| 40 | import org.onlab.packet.MacAddress; |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 41 | import org.onlab.packet.RADIUS; |
| 42 | import org.onlab.packet.RADIUSAttribute; |
Hyunsun Moon | a0d6371 | 2015-08-22 21:04:23 -0700 | [diff] [blame] | 43 | import org.onlab.packet.TpPort; |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 44 | import org.onlab.packet.UDP; |
| 45 | import org.onlab.packet.VlanId; |
| 46 | import org.onlab.util.Tools; |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 47 | import org.onosproject.cfg.ComponentConfigService; |
| 48 | import org.onosproject.core.ApplicationId; |
| 49 | import org.onosproject.core.CoreService; |
| 50 | import org.onosproject.net.ConnectPoint; |
| 51 | import org.onosproject.net.DeviceId; |
| 52 | import org.onosproject.net.Host; |
| 53 | import org.onosproject.net.PortNumber; |
| 54 | import org.onosproject.net.flow.DefaultTrafficSelector; |
| 55 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 56 | import org.onosproject.net.flow.TrafficSelector; |
| 57 | import org.onosproject.net.flow.TrafficTreatment; |
| 58 | import org.onosproject.net.host.HostService; |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 59 | import org.onosproject.net.packet.DefaultOutboundPacket; |
| 60 | import org.onosproject.net.packet.InboundPacket; |
| 61 | import org.onosproject.net.packet.OutboundPacket; |
| 62 | import org.onosproject.net.packet.PacketContext; |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 63 | import org.onosproject.net.packet.PacketProcessor; |
| 64 | import org.onosproject.net.packet.PacketService; |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 65 | import org.onosproject.xosintegration.VoltTenantService; |
| 66 | import org.osgi.service.component.ComponentContext; |
| 67 | import org.slf4j.Logger; |
| 68 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 69 | import com.google.common.base.Strings; |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 70 | |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 71 | import static org.onosproject.net.packet.PacketPriority.CONTROL; |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 72 | import static org.slf4j.LoggerFactory.getLogger; |
| 73 | |
| 74 | |
| 75 | /** |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 76 | * AAA application for ONOS. |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 77 | */ |
| 78 | @Component(immediate = true) |
| 79 | public class AAA { |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 80 | // RADIUS server IP address |
| 81 | private static final String DEFAULT_RADIUS_IP = "192.168.1.10"; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 82 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 83 | // NAS IP address |
| 84 | private static final String DEFAULT_NAS_IP = "192.168.1.11"; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 85 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 86 | // RADIUS uplink port |
| 87 | private static final int DEFAULT_RADIUS_UPLINK = 2; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 88 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 89 | // RADIUS server shared secret |
| 90 | private static final String DEFAULT_RADIUS_SECRET = "ONOSecret"; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 91 | |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 92 | // RADIUS MAC address |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 93 | private static final String RADIUS_MAC_ADDRESS = "00:00:00:00:01:10"; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 94 | |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 95 | // NAS MAC address |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 96 | private static final String NAS_MAC_ADDRESS = "00:00:00:00:10:01"; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 97 | |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 98 | // Radius Switch Id |
alshabib | 32039d5 | 2015-07-01 16:35:26 -0700 | [diff] [blame] | 99 | private static final String DEFAULT_RADIUS_SWITCH = "of:90e2ba82f97791e9"; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 100 | |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 101 | // Radius Port Number |
alshabib | 32039d5 | 2015-07-01 16:35:26 -0700 | [diff] [blame] | 102 | private static final String DEFAULT_RADIUS_PORT = "129"; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 103 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 104 | // for verbose output |
| 105 | private final Logger log = getLogger(getClass()); |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 106 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 107 | // a list of our dependencies : |
| 108 | // to register with ONOS as an application - described next |
| 109 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 110 | protected CoreService coreService; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 111 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 112 | // to receive Packet-in events that we'll respond to |
| 113 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 114 | protected PacketService packetService; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 115 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 116 | // end host information |
| 117 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 118 | protected HostService hostService; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 119 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 120 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 121 | protected VoltTenantService voltTenantService; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 122 | |
| 123 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 124 | protected ComponentConfigService cfgService; |
| 125 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 126 | // Parsed RADIUS server IP address |
| 127 | protected InetAddress parsedRadiusIpAddress; |
| 128 | // Parsed NAS IP address |
| 129 | protected InetAddress parsedNasIpAddress; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 130 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 131 | // our application-specific event handler |
| 132 | private ReactivePacketProcessor processor = new ReactivePacketProcessor(); |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 133 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 134 | // our unique identifier |
| 135 | private ApplicationId appId; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 136 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 137 | @Property(name = "radiusIpAddress", value = DEFAULT_RADIUS_IP, |
| 138 | label = "RADIUS IP Address") |
| 139 | private String radiusIpAddress = DEFAULT_RADIUS_IP; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 140 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 141 | @Property(name = "nasIpAddress", value = DEFAULT_NAS_IP, |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 142 | label = "NAS IP Address") |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 143 | private String nasIpAddress = DEFAULT_NAS_IP; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 144 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 145 | @Property(name = "radiusMacAddress", value = RADIUS_MAC_ADDRESS, |
| 146 | label = "RADIUS MAC Address") |
| 147 | private String radiusMacAddress = RADIUS_MAC_ADDRESS; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 148 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 149 | @Property(name = "nasMacAddress", value = NAS_MAC_ADDRESS, |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 150 | label = "NAS MAC Address") |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 151 | private String nasMacAddress = NAS_MAC_ADDRESS; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 152 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 153 | @Property(name = "radiusSecret", value = DEFAULT_RADIUS_SECRET, |
| 154 | label = "RADIUS shared secret") |
| 155 | private String radiusSecret = DEFAULT_RADIUS_SECRET; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 156 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 157 | @Property(name = "radiusSwitchId", value = DEFAULT_RADIUS_SWITCH, |
| 158 | label = "Radius switch") |
| 159 | private String radiusSwitch = DEFAULT_RADIUS_SWITCH; |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 160 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 161 | @Property(name = "radiusPortNumber", value = DEFAULT_RADIUS_PORT, |
| 162 | label = "Radius port") |
| 163 | private String radiusPort = DEFAULT_RADIUS_PORT; |
| 164 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 165 | /** |
| 166 | * Builds an EAPOL packet based on the given parameters. |
| 167 | * |
| 168 | * @param dstMac destination MAC address |
| 169 | * @param srcMac source MAC address |
| 170 | * @param vlan vlan identifier |
| 171 | * @param eapolType EAPOL type |
| 172 | * @param eap EAP payload |
| 173 | * @return Ethernet frame |
| 174 | */ |
| 175 | private static Ethernet buildEapolResponse(MacAddress dstMac, MacAddress srcMac, |
| 176 | short vlan, byte eapolType, EAP eap) { |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 177 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 178 | Ethernet eth = new Ethernet(); |
| 179 | eth.setDestinationMACAddress(dstMac.toBytes()); |
| 180 | eth.setSourceMACAddress(srcMac.toBytes()); |
| 181 | eth.setEtherType(EthType.EtherType.EAPOL.ethType().toShort()); |
| 182 | if (vlan != Ethernet.VLAN_UNTAGGED) { |
| 183 | eth.setVlanID(vlan); |
| 184 | } |
| 185 | //eapol header |
| 186 | EAPOL eapol = new EAPOL(); |
| 187 | eapol.setEapolType(eapolType); |
| 188 | eapol.setPacketLength(eap.getLength()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 189 | |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 190 | //eap part |
| 191 | eapol.setPayload(eap); |
| 192 | |
| 193 | eth.setPayload(eapol); |
| 194 | eth.setPad(true); |
| 195 | return eth; |
| 196 | } |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 197 | |
| 198 | @Modified |
| 199 | public void modified(ComponentContext context) { |
| 200 | Dictionary<?, ?> properties = context.getProperties(); |
| 201 | |
| 202 | String s = Tools.get(properties, "radiusIpAddress"); |
| 203 | try { |
| 204 | parsedRadiusIpAddress = InetAddress.getByName(s); |
| 205 | radiusIpAddress = Strings.isNullOrEmpty(s) ? DEFAULT_RADIUS_IP : s; |
| 206 | } catch (UnknownHostException e) { |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 207 | log.error("Invalid RADIUS IP address specification: {}", s, e); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 208 | } |
| 209 | try { |
| 210 | s = Tools.get(properties, "nasIpAddress"); |
| 211 | parsedNasIpAddress = InetAddress.getByName(s); |
| 212 | nasIpAddress = Strings.isNullOrEmpty(s) ? DEFAULT_NAS_IP : s; |
| 213 | } catch (UnknownHostException e) { |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 214 | log.error("Invalid NAS IP address specification: {}", s, e); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 215 | } |
| 216 | |
| 217 | s = Tools.get(properties, "radiusMacAddress"); |
| 218 | radiusMacAddress = Strings.isNullOrEmpty(s) ? RADIUS_MAC_ADDRESS : s; |
| 219 | |
| 220 | s = Tools.get(properties, "nasMacAddress"); |
| 221 | nasMacAddress = Strings.isNullOrEmpty(s) ? NAS_MAC_ADDRESS : s; |
| 222 | |
| 223 | s = Tools.get(properties, "radiusSecret"); |
| 224 | radiusSecret = Strings.isNullOrEmpty(s) ? DEFAULT_RADIUS_SECRET : s; |
| 225 | |
| 226 | s = Tools.get(properties, "radiusSwitchId"); |
| 227 | radiusSwitch = Strings.isNullOrEmpty(s) ? DEFAULT_RADIUS_SWITCH : s; |
| 228 | |
| 229 | s = Tools.get(properties, "radiusPortNumber"); |
| 230 | radiusPort = Strings.isNullOrEmpty(s) ? DEFAULT_RADIUS_PORT : s; |
| 231 | } |
| 232 | |
| 233 | @Activate |
| 234 | public void activate(ComponentContext context) { |
| 235 | cfgService.registerProperties(getClass()); |
| 236 | modified(context); |
| 237 | // "org.onosproject.aaa" is the FQDN of our app |
| 238 | appId = coreService.registerApplication("org.onosproject.aaa"); |
| 239 | // register our event handler |
Brian O'Connor | d9c7da0 | 2015-07-29 17:49:24 -0700 | [diff] [blame] | 240 | packetService.addProcessor(processor, PacketProcessor.director(2)); |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 241 | requestIntercepts(); |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 242 | |
| 243 | StateMachine.initializeMaps(); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 244 | |
| 245 | hostService.startMonitoringIp(IpAddress.valueOf(radiusIpAddress)); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | @Deactivate |
| 249 | public void deactivate() { |
| 250 | cfgService.unregisterProperties(getClass(), false); |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 251 | |
| 252 | appId = coreService.registerApplication("org.onosproject.aaa"); |
| 253 | withdrawIntercepts(); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 254 | // de-register and null our handler |
| 255 | packetService.removeProcessor(processor); |
| 256 | processor = null; |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 257 | StateMachine.destroyMaps(); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 258 | } |
| 259 | |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 260 | /** |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 261 | * Request packet in via PacketService. |
| 262 | */ |
| 263 | private void requestIntercepts() { |
| 264 | TrafficSelector.Builder selector = DefaultTrafficSelector.builder(); |
| 265 | selector.matchEthType(EthType.EtherType.EAPOL.ethType().toShort()); |
| 266 | packetService.requestPackets(selector.build(), |
| 267 | CONTROL, appId); |
Jonathan Hart | feb4176 | 2015-07-15 15:10:28 -0700 | [diff] [blame] | 268 | |
| 269 | TrafficSelector radSelector = DefaultTrafficSelector.builder() |
| 270 | .matchEthType(EthType.EtherType.IPV4.ethType().toShort()) |
| 271 | .matchIPProtocol(IPv4.PROTOCOL_UDP) |
Hyunsun Moon | a0d6371 | 2015-08-22 21:04:23 -0700 | [diff] [blame] | 272 | .matchUdpDst(TpPort.tpPort(1812)) |
| 273 | .matchUdpSrc(TpPort.tpPort(1812)) |
Jonathan Hart | feb4176 | 2015-07-15 15:10:28 -0700 | [diff] [blame] | 274 | .build(); |
| 275 | packetService.requestPackets(radSelector, CONTROL, appId); |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 276 | } |
| 277 | |
| 278 | /** |
| 279 | * Cancel request for packet in via PacketService. |
| 280 | */ |
| 281 | private void withdrawIntercepts() { |
| 282 | TrafficSelector.Builder selector = DefaultTrafficSelector.builder(); |
| 283 | selector.matchEthType(EthType.EtherType.EAPOL.ethType().toShort()); |
| 284 | packetService.cancelPackets(selector.build(), CONTROL, appId); |
Jonathan Hart | feb4176 | 2015-07-15 15:10:28 -0700 | [diff] [blame] | 285 | |
| 286 | TrafficSelector radSelector = DefaultTrafficSelector.builder() |
| 287 | .matchEthType(EthType.EtherType.IPV4.ethType().toShort()) |
| 288 | .matchIPProtocol(IPv4.PROTOCOL_UDP) |
Hyunsun Moon | a0d6371 | 2015-08-22 21:04:23 -0700 | [diff] [blame] | 289 | .matchUdpDst(TpPort.tpPort(1812)) |
| 290 | .matchUdpSrc(TpPort.tpPort(1812)) |
Jonathan Hart | feb4176 | 2015-07-15 15:10:28 -0700 | [diff] [blame] | 291 | .build(); |
| 292 | packetService.cancelPackets(radSelector, CONTROL, appId); |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 293 | } |
| 294 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 295 | // our handler defined as a private inner class |
| 296 | |
| 297 | /** |
| 298 | * Packet processor responsible for forwarding packets along their paths. |
| 299 | */ |
| 300 | private class ReactivePacketProcessor implements PacketProcessor { |
| 301 | @Override |
| 302 | public void process(PacketContext context) { |
| 303 | |
| 304 | // Extract the original Ethernet frame from the packet information |
| 305 | InboundPacket pkt = context.inPacket(); |
| 306 | Ethernet ethPkt = pkt.parsed(); |
| 307 | if (ethPkt == null) { |
| 308 | return; |
| 309 | } |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 310 | try { |
| 311 | // identify if incoming packet comes from supplicant (EAP) or RADIUS |
| 312 | switch (EthType.EtherType.lookup(ethPkt.getEtherType())) { |
| 313 | case EAPOL: |
| 314 | handleSupplicantPacket(context.inPacket()); |
| 315 | break; |
| 316 | case IPV4: |
| 317 | IPv4 ipv4Packet = (IPv4) ethPkt.getPayload(); |
| 318 | Ip4Address srcIp = Ip4Address.valueOf(ipv4Packet.getSourceAddress()); |
| 319 | Ip4Address radiusIp4Address = Ip4Address.valueOf(parsedRadiusIpAddress); |
| 320 | if (srcIp.equals(radiusIp4Address) && ipv4Packet.getProtocol() == IPv4.PROTOCOL_UDP) { |
| 321 | // TODO: check for port as well when it's configurable |
| 322 | UDP udpPacket = (UDP) ipv4Packet.getPayload(); |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 323 | |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 324 | byte[] datagram = udpPacket.getPayload().serialize(); |
| 325 | RADIUS radiusPacket; |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 326 | radiusPacket = RADIUS.deserializer().deserialize(datagram, 0, datagram.length); |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 327 | handleRadiusPacket(radiusPacket); |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 328 | } |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 329 | |
| 330 | break; |
| 331 | default: |
| 332 | log.trace("Skipping Ethernet packet type {}", |
| 333 | EthType.EtherType.lookup(ethPkt.getEtherType())); |
| 334 | } |
| 335 | } catch (DeserializationException | StateMachineException e) { |
| 336 | log.warn("Unable to process RADIUS packet:", e); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 337 | } |
| 338 | } |
| 339 | |
| 340 | |
| 341 | /** |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 342 | * Handles PAE packets (supplicant). |
| 343 | * |
| 344 | * @param inPacket Ethernet packet coming from the supplicant |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 345 | */ |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 346 | private void handleSupplicantPacket(InboundPacket inPacket) throws StateMachineException { |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 347 | Ethernet ethPkt = inPacket.parsed(); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 348 | // Where does it come from? |
| 349 | MacAddress srcMAC = ethPkt.getSourceMAC(); |
| 350 | |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 351 | DeviceId deviceId = inPacket.receivedFrom().deviceId(); |
| 352 | PortNumber portNumber = inPacket.receivedFrom().port(); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 353 | String sessionId = deviceId.toString() + portNumber.toString(); |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 354 | StateMachine stateMachine = StateMachine.lookupStateMachineBySessionId(sessionId); |
| 355 | if (stateMachine == null) { |
| 356 | stateMachine = new StateMachine(sessionId, voltTenantService); |
| 357 | } |
| 358 | |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 359 | |
| 360 | EAPOL eapol = (EAPOL) ethPkt.getPayload(); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 361 | |
| 362 | switch (eapol.getEapolType()) { |
| 363 | case EAPOL.EAPOL_START: |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 364 | stateMachine.start(); |
| 365 | stateMachine.setSupplicantConnectpoint(inPacket.receivedFrom()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 366 | |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 367 | //send an EAP Request/Identify to the supplicant |
| 368 | EAP eapPayload = new EAP(EAP.REQUEST, stateMachine.identifier(), EAP.ATTR_IDENTITY, null); |
| 369 | Ethernet eth = buildEapolResponse(srcMAC, MacAddress.valueOf(1L), |
| 370 | ethPkt.getVlanID(), EAPOL.EAPOL_PACKET, |
| 371 | eapPayload); |
| 372 | stateMachine.setSupplicantAddress(srcMAC); |
| 373 | stateMachine.setVlanId(ethPkt.getVlanID()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 374 | |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 375 | this.sendPacketToSupplicant(eth, stateMachine.supplicantConnectpoint()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 376 | |
| 377 | break; |
| 378 | case EAPOL.EAPOL_PACKET: |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 379 | RADIUS radiusPayload; |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 380 | //check if this is a Response/Identify or a Response/TLS |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 381 | EAP eapPacket = (EAP) eapol.getPayload(); |
| 382 | |
| 383 | byte dataType = eapPacket.getDataType(); |
| 384 | switch (dataType) { |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 385 | |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 386 | case EAP.ATTR_IDENTITY: |
| 387 | //request id access to RADIUS |
| 388 | stateMachine.setUsername(eapPacket.getData()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 389 | |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 390 | radiusPayload = |
| 391 | new RADIUS(RADIUS.RADIUS_CODE_ACCESS_REQUEST, |
| 392 | eapPacket.getIdentifier()); |
| 393 | radiusPayload.setIdentifier(stateMachine.identifier()); |
| 394 | radiusPayload.setAttribute(RADIUSAttribute.RADIUS_ATTR_USERNAME, |
| 395 | eapPacket.getData()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 396 | |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 397 | radiusPayload.setAttribute(RADIUSAttribute.RADIUS_ATTR_NAS_IP, |
| 398 | AAA.this.parsedNasIpAddress.getAddress()); |
| 399 | |
| 400 | radiusPayload.encapsulateMessage(eapPacket); |
| 401 | |
| 402 | // set Request Authenticator in StateMachine |
| 403 | stateMachine.setRequestAuthenticator(radiusPayload.generateAuthCode()); |
| 404 | radiusPayload.addMessageAuthenticator(AAA.this.radiusSecret); |
| 405 | sendRadiusMessage(radiusPayload); |
| 406 | |
| 407 | //change the state to "PENDING" |
| 408 | stateMachine.requestAccess(); |
| 409 | break; |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 410 | case EAP.ATTR_MD5: |
| 411 | //verify if the EAP identifier corresponds to the challenge identifier from the client state |
| 412 | //machine. |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 413 | if (eapPacket.getIdentifier() == stateMachine.challengeIdentifier()) { |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 414 | //send the RADIUS challenge response |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 415 | radiusPayload = new RADIUS(RADIUS.RADIUS_CODE_ACCESS_REQUEST, |
| 416 | eapPacket.getIdentifier()); |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 417 | radiusPayload.setIdentifier(stateMachine.challengeIdentifier()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 418 | radiusPayload.setAttribute(RADIUSAttribute.RADIUS_ATTR_USERNAME, |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 419 | stateMachine.username()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 420 | radiusPayload.setAttribute(RADIUSAttribute.RADIUS_ATTR_NAS_IP, |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 421 | AAA.this.parsedNasIpAddress.getAddress()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 422 | |
| 423 | radiusPayload.encapsulateMessage(eapPacket); |
| 424 | |
| 425 | radiusPayload.setAttribute(RADIUSAttribute.RADIUS_ATTR_STATE, |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 426 | stateMachine.challengeState()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 427 | radiusPayload.addMessageAuthenticator(AAA.this.radiusSecret); |
| 428 | sendRadiusMessage(radiusPayload); |
| 429 | } |
| 430 | break; |
| 431 | case EAP.ATTR_TLS: |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 432 | //request id access to RADIUS |
| 433 | radiusPayload = new RADIUS(RADIUS.RADIUS_CODE_ACCESS_REQUEST, |
| 434 | eapPacket.getIdentifier()); |
| 435 | radiusPayload.setIdentifier(stateMachine.identifier()); |
| 436 | radiusPayload.setAttribute(RADIUSAttribute.RADIUS_ATTR_USERNAME, |
| 437 | stateMachine.username()); |
| 438 | radiusPayload.setAttribute(RADIUSAttribute.RADIUS_ATTR_NAS_IP, |
| 439 | AAA.this.parsedNasIpAddress.getAddress()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 440 | |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 441 | radiusPayload.encapsulateMessage(eapPacket); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 442 | |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 443 | radiusPayload.setAttribute(RADIUSAttribute.RADIUS_ATTR_STATE, |
| 444 | stateMachine.challengeState()); |
| 445 | stateMachine.setRequestAuthenticator(radiusPayload.generateAuthCode()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 446 | |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 447 | radiusPayload.addMessageAuthenticator(AAA.this.radiusSecret); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 448 | |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 449 | sendRadiusMessage(radiusPayload); |
| 450 | // TODO: this gets called on every fragment, should only be called at TLS-Start |
| 451 | stateMachine.requestAccess(); |
| 452 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 453 | break; |
| 454 | default: |
| 455 | return; |
| 456 | } |
| 457 | break; |
| 458 | default: |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 459 | log.trace("Skipping EAPOL message {}", eapol.getEapolType()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 460 | } |
| 461 | } |
| 462 | |
| 463 | /** |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 464 | * Handles RADIUS packets. |
| 465 | * |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 466 | * @param radiusPacket RADIUS packet coming from the RADIUS server. |
| 467 | */ |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 468 | private void handleRadiusPacket(RADIUS radiusPacket) throws StateMachineException { |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 469 | StateMachine stateMachine = StateMachine.lookupStateMachineById(radiusPacket.getIdentifier()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 470 | if (stateMachine == null) { |
| 471 | log.error("Invalid session identifier, exiting..."); |
| 472 | return; |
| 473 | } |
| 474 | |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 475 | EAP eapPayload; |
| 476 | Ethernet eth; |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 477 | switch (radiusPacket.getCode()) { |
| 478 | case RADIUS.RADIUS_CODE_ACCESS_CHALLENGE: |
| 479 | byte[] challengeState = radiusPacket.getAttribute(RADIUSAttribute.RADIUS_ATTR_STATE).getValue(); |
| 480 | eapPayload = radiusPacket.decapsulateMessage(); |
| 481 | stateMachine.setChallengeInfo(eapPayload.getIdentifier(), challengeState); |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 482 | eth = buildEapolResponse(stateMachine.supplicantAddress(), |
| 483 | MacAddress.valueOf(1L), stateMachine.vlanId(), EAPOL.EAPOL_PACKET, |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 484 | eapPayload); |
Ray Milkey | f61a24e | 2015-09-24 16:34:02 -0700 | [diff] [blame] | 485 | this.sendPacketToSupplicant(eth, stateMachine.supplicantConnectpoint()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 486 | break; |
| 487 | case RADIUS.RADIUS_CODE_ACCESS_ACCEPT: |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 488 | //send an EAPOL - Success to the supplicant. |
| 489 | byte[] eapMessage = |
| 490 | radiusPacket.getAttribute(RADIUSAttribute.RADIUS_ATTR_EAP_MESSAGE).getValue(); |
| 491 | eapPayload = new EAP(); |
| 492 | eapPayload = (EAP) eapPayload.deserialize(eapMessage, 0, eapMessage.length); |
| 493 | eth = buildEapolResponse(stateMachine.supplicantAddress(), |
| 494 | MacAddress.valueOf(1L), stateMachine.vlanId(), EAPOL.EAPOL_PACKET, |
| 495 | eapPayload); |
| 496 | this.sendPacketToSupplicant(eth, stateMachine.supplicantConnectpoint()); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 497 | |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 498 | stateMachine.authorizeAccess(); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 499 | break; |
| 500 | case RADIUS.RADIUS_CODE_ACCESS_REJECT: |
Ray Milkey | f51eba2 | 2015-09-25 10:24:23 -0700 | [diff] [blame^] | 501 | stateMachine.denyAccess(); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 502 | break; |
| 503 | default: |
| 504 | log.warn("Unknown RADIUS message received with code: {}", radiusPacket.getCode()); |
| 505 | } |
| 506 | } |
| 507 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 508 | private void sendRadiusMessage(RADIUS radiusMessage) { |
| 509 | Set<Host> hosts = hostService.getHostsByIp(IpAddress.valueOf(radiusIpAddress)); |
| 510 | Optional<Host> odst = hosts.stream().filter(h -> h.vlan().toShort() == VlanId.UNTAGGED).findFirst(); |
| 511 | |
| 512 | Host dst; |
| 513 | if (!odst.isPresent()) { |
| 514 | log.info("Radius server {} is not present", radiusIpAddress); |
| 515 | return; |
| 516 | } else { |
| 517 | dst = odst.get(); |
| 518 | } |
| 519 | |
| 520 | UDP udp = new UDP(); |
| 521 | IPv4 ip4Packet = new IPv4(); |
| 522 | Ethernet ethPkt = new Ethernet(); |
| 523 | radiusMessage.setParent(udp); |
| 524 | udp.setDestinationPort((short) 1812); |
| 525 | udp.setSourcePort((short) 1812); // TODO: make this configurable |
| 526 | udp.setPayload(radiusMessage); |
| 527 | udp.setParent(ip4Packet); |
| 528 | ip4Packet.setSourceAddress(AAA.this.nasIpAddress); |
| 529 | ip4Packet.setDestinationAddress(AAA.this.radiusIpAddress); |
| 530 | ip4Packet.setProtocol(IPv4.PROTOCOL_UDP); |
| 531 | ip4Packet.setPayload(udp); |
| 532 | ip4Packet.setParent(ethPkt); |
| 533 | ethPkt.setDestinationMACAddress(radiusMacAddress); |
| 534 | ethPkt.setSourceMACAddress(nasMacAddress); |
| 535 | ethPkt.setEtherType(Ethernet.TYPE_IPV4); |
| 536 | ethPkt.setPayload(ip4Packet); |
| 537 | |
| 538 | TrafficTreatment treatment = DefaultTrafficTreatment.builder() |
| 539 | .setOutput(PortNumber.portNumber(Integer.parseInt(radiusPort))).build(); |
| 540 | OutboundPacket packet = new DefaultOutboundPacket(DeviceId.deviceId(radiusSwitch), |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 541 | treatment, ByteBuffer.wrap(ethPkt.serialize())); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 542 | packetService.emit(packet); |
| 543 | |
| 544 | } |
| 545 | |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 546 | /** |
| 547 | * Send the ethernet packet to the supplicant. |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 548 | * |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 549 | * @param ethernetPkt the ethernet packet |
Jonathan Hart | a46dddf | 2015-06-30 15:31:20 -0700 | [diff] [blame] | 550 | * @param connectPoint the connect point to send out |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 551 | */ |
| 552 | private void sendPacketToSupplicant(Ethernet ethernetPkt, ConnectPoint connectPoint) { |
| 553 | TrafficTreatment treatment = DefaultTrafficTreatment.builder().setOutput(connectPoint.port()).build(); |
| 554 | OutboundPacket packet = new DefaultOutboundPacket(connectPoint.deviceId(), |
Aaron Kruglikov | d39d99e | 2015-07-03 13:30:57 -0700 | [diff] [blame] | 555 | treatment, ByteBuffer.wrap(ethernetPkt.serialize())); |
Ari Saha | 8983174 | 2015-06-26 10:31:48 -0700 | [diff] [blame] | 556 | packetService.emit(packet); |
| 557 | } |
| 558 | |
| 559 | } |
| 560 | |
| 561 | } |