/*
* Copyright (c) 2016 HPE, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.netvirt.aclservice;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
import org.opendaylight.genius.mdsalutil.ActionInfo;
import org.opendaylight.genius.mdsalutil.ActionType;
import org.opendaylight.genius.mdsalutil.InstructionInfo;
import org.opendaylight.genius.mdsalutil.MDSALUtil;
import org.opendaylight.genius.mdsalutil.MatchFieldType;
import org.opendaylight.genius.mdsalutil.MatchInfo;
import org.opendaylight.genius.mdsalutil.MatchInfoBase;
import org.opendaylight.genius.mdsalutil.NwConstants;
import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
import org.opendaylight.genius.utils.ServiceIndex;
import org.opendaylight.netvirt.aclservice.api.AclServiceManager.Action;
import org.opendaylight.netvirt.aclservice.utils.AclConstants;
import org.opendaylight.netvirt.aclservice.utils.AclServiceOFFlowBuilder;
import org.opendaylight.netvirt.aclservice.utils.AclServiceUtils;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.Acl;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.AccessListEntries;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.Ace;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.ace.Matches;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.ace.matches.AceType;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160218.access.lists.acl.access.list.entries.ace.matches.ace.type.AceIp;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.types.rev131026.instruction.list.Instruction;
import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.ServiceModeIngress;
import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.servicebinding.rev160406.service.bindings.services.info.BoundServices;
import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.DirectionEgress;
import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.SecurityRuleAttr;
import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.rev160608.interfaces._interface.AllowedAddressPairs;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Provides abstract implementation for egress (w.r.t VM) ACL service.
*
*
* Note: Table names used are w.r.t switch. Hence, switch ingress is VM egress
* and vice versa.
*/
public abstract class AbstractEgressAclServiceImpl extends AbstractAclServiceImpl {
private static final Logger LOG = LoggerFactory.getLogger(AbstractEgressAclServiceImpl.class);
/**
* Initialize the member variables.
*
* @param dataBroker the data broker instance.
* @param mdsalManager the mdsal manager instance.
*/
public AbstractEgressAclServiceImpl(DataBroker dataBroker, IMdsalApiManager mdsalManager) {
// Service mode is w.rt. switch
super(ServiceModeIngress.class, dataBroker, mdsalManager);
}
/**
* Bind service.
*
* @param interfaceName the interface name
*/
@Override
protected void bindService(String interfaceName) {
int flowPriority = AclConstants.EGRESS_ACL_DEFAULT_FLOW_PRIORITY;
int instructionKey = 0;
List instructions = new ArrayList<>();
instructions.add(MDSALUtil.buildAndGetGotoTableInstruction(NwConstants.INGRESS_ACL_TABLE, ++instructionKey));
short serviceIndex = ServiceIndex.getIndex(NwConstants.ACL_SERVICE_NAME, NwConstants.ACL_SERVICE_INDEX);
BoundServices serviceInfo =
AclServiceUtils.getBoundServices(String.format("%s.%s.%s", "vpn", "egressacl", interfaceName),
serviceIndex, flowPriority, AclConstants.COOKIE_ACL_BASE, instructions);
InstanceIdentifier path =
AclServiceUtils.buildServiceId(interfaceName, serviceIndex, ServiceModeIngress.class);
MDSALUtil.syncWrite(dataBroker, LogicalDatastoreType.CONFIGURATION, path, serviceInfo);
}
/**
* Unbind service.
*
* @param interfaceName the interface name
*/
@Override
protected void unbindService(String interfaceName) {
InstanceIdentifier path =
AclServiceUtils.buildServiceId(interfaceName,
ServiceIndex.getIndex(NwConstants.ACL_SERVICE_NAME, NwConstants.ACL_SERVICE_INDEX),
ServiceModeIngress.class);
MDSALUtil.syncDelete(dataBroker, LogicalDatastoreType.CONFIGURATION, path);
}
@Override
protected void programGeneralFixedRules(BigInteger dpid, String dhcpMacAddress,
List allowedAddresses, int lportTag, Action action, int addOrRemove) {
LOG.info("programFixedRules : adding default rules.");
if (action == Action.ADD || action == Action.REMOVE) {
egressAclDhcpAllowClientTraffic(dpid, dhcpMacAddress, lportTag, addOrRemove);
egressAclDhcpv6AllowClientTraffic(dpid, dhcpMacAddress, lportTag, addOrRemove);
egressAclDhcpDropServerTraffic(dpid, dhcpMacAddress, lportTag, addOrRemove);
egressAclDhcpv6DropServerTraffic(dpid, dhcpMacAddress, lportTag, addOrRemove);
egressAclIcmpv6AllowAll(dpid, lportTag, addOrRemove);
egressAclIcmpv6DropRouterAdvts(dpid, lportTag, addOrRemove);
}
programArpRule(dpid, allowedAddresses, lportTag, addOrRemove);
}
@Override
protected boolean programAclRules(List aclUuidList, BigInteger dpId, int lportTag, int addOrRemove, String
portId) {
LOG.trace("Applying custom rules DpId {}, lportTag {}", dpId, lportTag);
for (Uuid sgUuid :aclUuidList ) {
Acl acl = AclServiceUtils.getAcl(dataBroker, sgUuid.getValue());
if (null == acl) {
LOG.warn("The ACL is empty");
continue;
}
AccessListEntries accessListEntries = acl.getAccessListEntries();
List aceList = accessListEntries.getAce();
for (Ace ace: aceList) {
programAceRule(dpId, lportTag, addOrRemove, ace, portId, null);
}
}
return true;
}
@Override
protected void programAceRule(BigInteger dpId, int lportTag, int addOrRemove, Ace ace, String portId,
List syncAllowedAddresses) {
SecurityRuleAttr aceAttr = AclServiceUtils.getAccesssListAttributes(ace);
if (!aceAttr.getDirection().equals(DirectionEgress.class)) {
return;
}
Matches matches = ace.getMatches();
AceType aceType = matches.getAceType();
Map> flowMap = null;
if (aceType instanceof AceIp) {
flowMap = AclServiceOFFlowBuilder.programIpFlow(matches);
if (syncAllowedAddresses != null) {
flowMap = AclServiceUtils.getFlowForAllowedAddresses(syncAllowedAddresses, flowMap, false);
} else if (aceAttr.getRemoteGroupId() != null) {
flowMap = AclServiceUtils.getFlowForRemoteAcl(aceAttr.getRemoteGroupId(), portId, flowMap,
false);
}
}
if (null == flowMap) {
LOG.error("Failed to apply ACL {} lportTag {}", ace.getKey(), lportTag);
return;
}
//The flow map contains list of flows if port range is selected.
for ( String flowName : flowMap.keySet()) {
flowName = syncSpecificAclFlow(dpId, lportTag, addOrRemove, ace, portId, flowMap, flowName);
}
}
protected abstract String syncSpecificAclFlow(BigInteger dpId, int lportTag, int addOrRemove, Ace ace,
String portId, Map> flowMap, String flowName);
/**
* Anti-spoofing rule to block the Ipv4 DHCP server traffic from the port.
*
* @param dpId the dpId
* @param dhcpMacAddress the Dhcp mac address
* @param lportTag the lport tag
* @param addOrRemove add/remove the flow.
*/
protected void egressAclDhcpDropServerTraffic(BigInteger dpId, String dhcpMacAddress, int lportTag,
int addOrRemove) {
List matches = AclServiceUtils.buildDhcpMatches(AclConstants.DHCP_SERVER_PORT_IPV4,
AclConstants.DHCP_CLIENT_PORT_IPV4, lportTag);
List instructions = new ArrayList<>();
List actionsInfos = new ArrayList<>();
actionsInfos.add(new ActionInfo(ActionType.drop_action, new String[] {}));
String flowName = "Egress_DHCP_Server_v4" + dpId + "_" + lportTag + "_" + dhcpMacAddress + "_Drop_";
syncFlow(dpId, NwConstants.INGRESS_ACL_TABLE, flowName,
AclConstants.PROTO_DHCP_CLIENT_TRAFFIC_MATCH_PRIORITY, "ACL", 0,
0, AclConstants.COOKIE_ACL_BASE, matches, instructions, addOrRemove);
}
/**
* Anti-spoofing rule to block the Ipv6 DHCP server traffic from the port.
*
* @param dpId the dpId
* @param dhcpMacAddress the Dhcp mac address
* @param lportTag the lport tag
* @param addOrRemove add/remove the flow.
*/
protected void egressAclDhcpv6DropServerTraffic(BigInteger dpId, String dhcpMacAddress, int lportTag,
int addOrRemove) {
List matches = AclServiceUtils.buildDhcpV6Matches(AclConstants.DHCP_SERVER_PORT_IPV6,
AclConstants.DHCP_CLIENT_PORT_IPV6, lportTag);
List instructions = new ArrayList<>();
List actionsInfos = new ArrayList<>();
actionsInfos.add(new ActionInfo(ActionType.drop_action, new String[] {}));
String flowName = "Egress_DHCP_Server_v6" + "_" + dpId + "_" + lportTag + "_" + dhcpMacAddress + "_Drop_";
syncFlow(dpId, NwConstants.INGRESS_ACL_TABLE, flowName,
AclConstants.PROTO_DHCP_CLIENT_TRAFFIC_MATCH_PRIORITY, "ACL", 0,
0, AclConstants.COOKIE_ACL_BASE, matches, instructions, addOrRemove);
}
/**
* Add rule to allow all ICMPv6 traffic from the VM port.
*
* @param dpId the dpId
* @param lportTag the lport tag
* @param addOrRemove add/remove the flow.
*/
private void egressAclIcmpv6AllowAll(BigInteger dpId, int lportTag, int addOrRemove) {
final List matches = AclServiceUtils.buildIcmpV6Matches(0, 0, lportTag);
List actionsInfos = new ArrayList<>();
List instructions = getDispatcherTableResubmitInstructions(actionsInfos);
String flowName = "Egress_ICMPv6_ALL" + dpId + "_" + lportTag + "_Permit_";
syncFlow(dpId, NwConstants.INGRESS_ACL_TABLE, flowName, AclConstants.PROTO_IPV6_ALLOWED_PRIORITY,
"ACL", 0, 0, AclConstants.COOKIE_ACL_BASE, matches, instructions, addOrRemove);
}
/**
* Anti-spoofing rule to block the Ipv6 Router Advts from the VM port.
*
* @param dpId the dpId
* @param lportTag the lport tag
* @param addOrRemove add/remove the flow.
*/
private void egressAclIcmpv6DropRouterAdvts(BigInteger dpId, int lportTag, int addOrRemove) {
List matches = AclServiceUtils.buildIcmpV6Matches(AclConstants.ICMPV6_TYPE_RA, 0, lportTag);
List instructions = new ArrayList<>();
List actionsInfos = new ArrayList<>();
actionsInfos.add(new ActionInfo(ActionType.drop_action, new String[] {}));
String flowName = "Egress_ICMPv6" + "_" + dpId + "_" + lportTag + "_" + AclConstants.ICMPV6_TYPE_RA + "_Drop_";
syncFlow(dpId, NwConstants.INGRESS_ACL_TABLE, flowName, AclConstants.PROTO_IPV6_DROP_PRIORITY, "ACL", 0,
0, AclConstants.COOKIE_ACL_BASE, matches, instructions, addOrRemove);
}
/**
* Add rule to ensure only DHCP server traffic from the specified mac is
* allowed.
*
* @param dpId the dpid
* @param dhcpMacAddress the DHCP server mac address
* @param lportTag the lport tag
* @param addOrRemove whether to add or remove the flow
*/
private void egressAclDhcpAllowClientTraffic(BigInteger dpId, String dhcpMacAddress, int lportTag,
int addOrRemove) {
final List matches = AclServiceUtils.buildDhcpMatches(AclConstants.DHCP_CLIENT_PORT_IPV4,
AclConstants.DHCP_SERVER_PORT_IPV4, lportTag);
List actionsInfos = new ArrayList<>();
List instructions = getDispatcherTableResubmitInstructions(actionsInfos);
String flowName = "Egress_DHCP_Client_v4" + dpId + "_" + lportTag + "_" + dhcpMacAddress + "_Permit_";
syncFlow(dpId, NwConstants.INGRESS_ACL_TABLE, flowName, AclConstants.PROTO_DHCP_CLIENT_TRAFFIC_MATCH_PRIORITY,
"ACL", 0, 0, AclConstants.COOKIE_ACL_BASE, matches, instructions, addOrRemove);
}
/**
* Add rule to ensure only DHCPv6 server traffic from the specified mac is
* allowed.
*
* @param dpId the dpid
* @param dhcpMacAddress the DHCP server mac address
* @param lportTag the lport tag
* @param addOrRemove whether to add or remove the flow
*/
private void egressAclDhcpv6AllowClientTraffic(BigInteger dpId, String dhcpMacAddress, int lportTag,
int addOrRemove) {
final List matches = AclServiceUtils.buildDhcpV6Matches(AclConstants.DHCP_CLIENT_PORT_IPV6,
AclConstants.DHCP_SERVER_PORT_IPV6, lportTag);
List actionsInfos = new ArrayList<>();
List instructions = getDispatcherTableResubmitInstructions(actionsInfos);
String flowName = "Egress_DHCP_Client_v6" + "_" + dpId + "_" + lportTag + "_" + dhcpMacAddress + "_Permit_";
syncFlow(dpId, NwConstants.INGRESS_ACL_TABLE, flowName, AclConstants.PROTO_DHCP_CLIENT_TRAFFIC_MATCH_PRIORITY,
"ACL", 0, 0, AclConstants.COOKIE_ACL_BASE, matches, instructions, addOrRemove);
}
/**
* Adds the rule to allow arp packets.
*
* @param dpId the dpId
* @param allowedAddresses the allowed addresses
* @param lportTag the lport tag
* @param addOrRemove whether to add or remove the flow
*/
protected void programArpRule(BigInteger dpId, List allowedAddresses, int lportTag,
int addOrRemove) {
for (AllowedAddressPairs allowedAddress : allowedAddresses) {
String attachMac = allowedAddress.getMacAddress().getValue();
List matches = new ArrayList<>();
matches.add(new MatchInfo(MatchFieldType.eth_type, new long[] {NwConstants.ETHTYPE_ARP}));
matches.add(new MatchInfo(MatchFieldType.arp_sha, new String[] {attachMac}));
matches.add(AclServiceUtils.buildLPortTagMatch(lportTag));
List instructions = getDispatcherTableResubmitInstructions(new ArrayList<>());
String flowName = "Egress_ARP_" + dpId + "_" + attachMac;
syncFlow(dpId, NwConstants.INGRESS_ACL_TABLE, flowName,
AclConstants.PROTO_ARP_TRAFFIC_MATCH_PRIORITY, "ACL", 0, 0,
AclConstants.COOKIE_ACL_BASE, matches, instructions, addOrRemove);
}
}
}