sangho | 9008853 | 2016-02-25 18:06:12 +0900 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2016 Open Networking Laboratory |
| 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 | |
| 17 | package org.onosproject.openstacknetworking.switching; |
| 18 | |
| 19 | import org.onlab.packet.Ethernet; |
| 20 | import org.onlab.packet.IPv4; |
| 21 | import org.onlab.packet.Ip4Address; |
| 22 | import org.onlab.packet.Ip4Prefix; |
| 23 | import org.onlab.packet.IpAddress; |
| 24 | import org.onlab.packet.IpPrefix; |
| 25 | import org.onlab.packet.TpPort; |
| 26 | import org.onosproject.core.ApplicationId; |
| 27 | import org.onosproject.net.DeviceId; |
| 28 | import org.onosproject.net.flow.DefaultTrafficSelector; |
| 29 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 30 | import org.onosproject.net.flow.TrafficSelector; |
| 31 | import org.onosproject.net.flow.TrafficTreatment; |
| 32 | import org.onosproject.net.flowobjective.DefaultForwardingObjective; |
| 33 | import org.onosproject.net.flowobjective.FlowObjectiveService; |
| 34 | import org.onosproject.net.flowobjective.ForwardingObjective; |
| 35 | import org.onosproject.openstackinterface.OpenstackInterfaceService; |
| 36 | import org.onosproject.openstackinterface.OpenstackSecurityGroup; |
| 37 | import org.onosproject.openstackinterface.OpenstackSecurityGroupRule; |
| 38 | import org.onosproject.openstacknetworking.OpenstackPortInfo; |
| 39 | import org.slf4j.Logger; |
| 40 | import org.slf4j.LoggerFactory; |
| 41 | |
| 42 | import java.util.Map; |
| 43 | |
| 44 | /** |
| 45 | * Populates flows rules for Security Groups of VMs. |
| 46 | * |
| 47 | */ |
| 48 | public class OpenstackSecurityGroupRulePopulator { |
| 49 | |
| 50 | private static Logger log = LoggerFactory |
| 51 | .getLogger(OpenstackSecurityGroupRulePopulator.class); |
| 52 | |
| 53 | private OpenstackInterfaceService openstackService; |
| 54 | private FlowObjectiveService flowObjectiveService; |
| 55 | |
| 56 | private ApplicationId appId; |
| 57 | |
| 58 | private static final String PROTO_ICMP = "ICMP"; |
| 59 | private static final String PROTO_TCP = "TCP"; |
| 60 | private static final String PROTO_UDP = "UDP"; |
| 61 | |
| 62 | private static final String ETHTYPE_IPV4 = "IPV4"; |
| 63 | |
| 64 | private static final IpPrefix IP_PREFIX_ANY = Ip4Prefix.valueOf("0.0.0.0/0"); |
| 65 | |
| 66 | private static final int ACL_RULE_PRIORITY = 30000; |
| 67 | |
| 68 | /** |
| 69 | * Constructor. |
| 70 | * |
| 71 | * @param appId |
| 72 | * @param openstackService |
| 73 | * @param flowObjectiveService |
| 74 | */ |
| 75 | public OpenstackSecurityGroupRulePopulator(ApplicationId appId, OpenstackInterfaceService openstackService, |
| 76 | FlowObjectiveService flowObjectiveService) { |
| 77 | this.appId = appId; |
| 78 | this.openstackService = openstackService; |
| 79 | this.flowObjectiveService = flowObjectiveService; |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Populates flow rules for security groups. |
| 84 | * |
| 85 | * @param id Device ID |
| 86 | * @param sgId Security Group ID |
| 87 | * @param vmIp VM IP address |
| 88 | * @param portInfoMap Port Info map |
| 89 | */ |
| 90 | public void populateSecurityGroupRules(DeviceId id, String sgId, Ip4Address vmIp, |
| 91 | Map<String, OpenstackPortInfo> portInfoMap) { |
| 92 | OpenstackSecurityGroup securityGroup = openstackService.getSecurityGroup(sgId); |
| 93 | if (securityGroup != null) { |
| 94 | securityGroup.rules().stream().forEach(sgRule -> { |
| 95 | if (sgRule.remoteGroupId() != null && !sgRule.remoteGroupId().equals("null")) { |
| 96 | openstackService.ports().stream() |
| 97 | .filter(port -> port.securityGroups().contains(sgRule.remoteGroupId())) |
| 98 | .flatMap(port -> port.fixedIps().values().stream()) |
| 99 | .forEach(remoteIp -> setSecurityGroupRule(id, sgRule, |
| 100 | vmIp, IpPrefix.valueOf((IpAddress) remoteIp, 32))); |
| 101 | } else { |
| 102 | setSecurityGroupRule(id, sgRule, vmIp, sgRule.remoteIpPrefix()); |
| 103 | } |
| 104 | }); |
| 105 | |
| 106 | openstackService.ports().stream().forEach(osPort -> |
| 107 | osPort.securityGroups().stream().forEach(remoteVmSgId -> { |
| 108 | OpenstackSecurityGroup remoteVmSg = openstackService.getSecurityGroup(remoteVmSgId); |
| 109 | remoteVmSg.rules().stream() |
| 110 | .filter(remoteVmSgRule -> remoteVmSgRule.remoteGroupId().equals(sgId)) |
| 111 | .forEach(remoteVmSgRule -> { |
| 112 | Ip4Address remoteVmIp = |
| 113 | (Ip4Address) osPort.fixedIps().values().stream().findAny().orElse(null); |
| 114 | OpenstackPortInfo osPortInfo = portInfoMap.get(OpenstackSwitchingManager.PORTNAME_PREFIX_VM |
| 115 | + osPort.id().substring(0, 11)); |
| 116 | if (osPortInfo != null && remoteVmIp != null) { |
| 117 | setSecurityGroupRule(osPortInfo.deviceId(), remoteVmSgRule, remoteVmIp, |
| 118 | IpPrefix.valueOf(vmIp, 32)); |
| 119 | } |
| 120 | }); |
| 121 | })); |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * Removes flow rules for security groups. |
| 127 | * |
| 128 | * @param id Device ID |
| 129 | * @param sgId Security Group ID to remove |
| 130 | * @param vmIp VM IP address |
| 131 | * @param portInfoMap port info map |
| 132 | * @param securityGroupMap security group info map |
| 133 | */ |
| 134 | public void removeSecurityGroupRules(DeviceId id, String sgId, Ip4Address vmIp, |
| 135 | Map<String, OpenstackPortInfo> portInfoMap, |
| 136 | Map<String, OpenstackSecurityGroup> securityGroupMap) { |
| 137 | OpenstackSecurityGroup securityGroup = securityGroupMap.get(sgId); |
| 138 | if (securityGroup != null) { |
| 139 | securityGroup.rules().stream().forEach(sgRule -> { |
| 140 | if (sgRule.remoteGroupId() != null && !sgRule.remoteGroupId().equals("null")) { |
| 141 | portInfoMap.values().stream() |
| 142 | .filter(portInfo -> portInfo.securityGroups().contains(sgRule.remoteGroupId())) |
| 143 | .map(OpenstackPortInfo::ip) |
| 144 | .forEach(remoteIp -> { |
| 145 | removeSecurityGroupRule(id, sgRule, vmIp, IpPrefix.valueOf(remoteIp, 32)); |
| 146 | }); |
| 147 | } else { |
| 148 | removeSecurityGroupRule(id, sgRule, vmIp, sgRule.remoteIpPrefix()); |
| 149 | } |
| 150 | }); |
| 151 | |
| 152 | portInfoMap.values().stream() |
| 153 | .forEach(portInfo -> portInfo.securityGroups() |
| 154 | .forEach(remoteVmSgId -> { |
| 155 | OpenstackSecurityGroup remoteVmSg = securityGroupMap.get(remoteVmSgId); |
| 156 | remoteVmSg.rules().stream() |
| 157 | .filter(remoteVmSgRule -> remoteVmSgRule.remoteGroupId().equals(sgId)) |
| 158 | .forEach(remoteVmSgRule -> removeSecurityGroupRule(portInfo.deviceId(), |
| 159 | remoteVmSgRule, portInfo.ip(), IpPrefix.valueOf(vmIp, 32))); |
| 160 | })); |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | private void setSecurityGroupRule(DeviceId id, OpenstackSecurityGroupRule sgRule, |
| 165 | Ip4Address vmIp, IpPrefix remoteIp) { |
| 166 | ForwardingObjective.Builder foBuilder = buildFlowObjective(id, sgRule, vmIp, remoteIp); |
| 167 | if (foBuilder != null) { |
| 168 | flowObjectiveService.forward(id, foBuilder.add()); |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | private void removeSecurityGroupRule(DeviceId id, OpenstackSecurityGroupRule sgRule, |
| 173 | Ip4Address vmIp, IpPrefix remoteIp) { |
| 174 | ForwardingObjective.Builder foBuilder = buildFlowObjective(id, sgRule, vmIp, remoteIp); |
| 175 | if (foBuilder != null) { |
| 176 | flowObjectiveService.forward(id, foBuilder.remove()); |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | ForwardingObjective.Builder buildFlowObjective(DeviceId id, OpenstackSecurityGroupRule sgRule, |
| 181 | Ip4Address vmIp, IpPrefix remoteIp) { |
| 182 | if (remoteIp != null && remoteIp.equals(IpPrefix.valueOf(vmIp, 32))) { |
| 183 | return null; |
| 184 | } |
| 185 | TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder(); |
| 186 | TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder(); |
| 187 | |
| 188 | buildMatchs(sBuilder, sgRule, vmIp, remoteIp); |
| 189 | |
| 190 | ForwardingObjective.Builder foBuilder = DefaultForwardingObjective.builder() |
| 191 | .withSelector(sBuilder.build()) |
| 192 | .withTreatment(tBuilder.build()) |
| 193 | .withPriority(ACL_RULE_PRIORITY) |
| 194 | .withFlag(ForwardingObjective.Flag.SPECIFIC) |
| 195 | .fromApp(appId); |
| 196 | |
| 197 | return foBuilder; |
| 198 | } |
| 199 | |
| 200 | private void buildMatchs(TrafficSelector.Builder sBuilder, OpenstackSecurityGroupRule sgRule, |
| 201 | Ip4Address vmIp, IpPrefix remoteIp) { |
| 202 | buildMatchEthType(sBuilder, sgRule.ethertype()); |
| 203 | buildMatchDirection(sBuilder, sgRule.direction(), vmIp); |
| 204 | buildMatchProto(sBuilder, sgRule.protocol()); |
| 205 | buildMatchPort(sBuilder, sgRule.protocol(), sgRule.direction(), sgRule.portRangeMax(), sgRule.portRangeMin()); |
| 206 | buildMatchRemoteIp(sBuilder, remoteIp, sgRule.direction()); |
| 207 | } |
| 208 | |
| 209 | private void buildMatchDirection(TrafficSelector.Builder sBuilder, |
| 210 | OpenstackSecurityGroupRule.Direction direction, Ip4Address vmIp) { |
| 211 | if (direction.equals(OpenstackSecurityGroupRule.Direction.EGRESS)) { |
| 212 | sBuilder.matchIPSrc(IpPrefix.valueOf(vmIp, 32)); |
| 213 | } else { |
| 214 | sBuilder.matchIPDst(IpPrefix.valueOf(vmIp, 32)); |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | private void buildMatchEthType(TrafficSelector.Builder sBuilder, String ethertype) { |
| 219 | // Either IpSrc or IpDst (or both) is set by default, and we need to set EthType as IPv4. |
| 220 | sBuilder.matchEthType(Ethernet.TYPE_IPV4); |
| 221 | if (ethertype != null && ethertype != "null" && |
| 222 | !ethertype.toUpperCase().equals(ETHTYPE_IPV4)) { |
| 223 | log.error("EthType {} is not supported yet in Security Group", ethertype); |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | private void buildMatchRemoteIp(TrafficSelector.Builder sBuilder, IpPrefix remoteIpPrefix, |
| 228 | OpenstackSecurityGroupRule.Direction direction) { |
| 229 | if (remoteIpPrefix != null && !remoteIpPrefix.getIp4Prefix().equals(IP_PREFIX_ANY)) { |
| 230 | if (direction.equals(OpenstackSecurityGroupRule.Direction.EGRESS)) { |
| 231 | sBuilder.matchIPDst(remoteIpPrefix); |
| 232 | } else { |
| 233 | sBuilder.matchIPSrc(remoteIpPrefix); |
| 234 | } |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | private void buildMatchProto(TrafficSelector.Builder sBuilder, String protocol) { |
| 239 | if (protocol != null) { |
| 240 | switch (protocol.toUpperCase()) { |
| 241 | case PROTO_ICMP: |
| 242 | sBuilder.matchIPProtocol(IPv4.PROTOCOL_ICMP); |
| 243 | break; |
| 244 | case PROTO_TCP: |
| 245 | sBuilder.matchIPProtocol(IPv4.PROTOCOL_TCP); |
| 246 | break; |
| 247 | case PROTO_UDP: |
| 248 | sBuilder.matchIPProtocol(IPv4.PROTOCOL_UDP); |
| 249 | break; |
| 250 | default: |
| 251 | } |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | private void buildMatchPort(TrafficSelector.Builder sBuilder, String protocol, |
| 256 | OpenstackSecurityGroupRule.Direction direction, |
| 257 | int portMin, int portMax) { |
| 258 | if (portMin > 0 && portMax > 0 && portMin == portMax) { |
| 259 | if (protocol.toUpperCase().equals(PROTO_TCP)) { |
| 260 | if (direction.equals(OpenstackSecurityGroupRule.Direction.EGRESS)) { |
| 261 | sBuilder.matchTcpDst(TpPort.tpPort(portMax)); |
| 262 | } else { |
| 263 | sBuilder.matchTcpSrc(TpPort.tpPort(portMax)); |
| 264 | } |
| 265 | } else if (protocol.toUpperCase().equals(PROTO_UDP)) { |
| 266 | if (direction.equals(OpenstackSecurityGroupRule.Direction.EGRESS)) { |
| 267 | sBuilder.matchUdpDst(TpPort.tpPort(portMax)); |
| 268 | } else { |
| 269 | sBuilder.matchUdpSrc(TpPort.tpPort(portMax)); |
| 270 | } |
| 271 | } |
| 272 | } |
| 273 | } |
| 274 | } |