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/*
* Copyright (c) 2016 Cisco and/or its affiliates.
*
* Licensed 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 io.fd.hc2vpp.acl.util.ace.extractor;
import com.google.common.collect.ImmutableMap;
import io.fd.hc2vpp.acl.util.protocol.IpProtocolReader;
import io.fd.hc2vpp.acl.util.protocol.ProtoPreBindRuleProducer;
import io.fd.vpp.jvpp.acl.types.AclRule;
import java.util.Map;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.Ace;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.Actions;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.ActionsBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.actions.PacketHandling;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.actions.packet.handling.Deny;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.actions.packet.handling.DenyBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.actions.packet.handling.Permit;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.actions.packet.handling.PermitBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.packet.fields.rev160708.AclIpv4HeaderFields;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.packet.fields.rev160708.AclIpv6HeaderFields;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.acl.rev161214.access.lists.acl.access.list.entries.ace.actions.packet.handling.Stateful;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.acl.rev161214.access.lists.acl.access.list.entries.ace.actions.packet.handling.StatefulBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.acl.rev161214.access.lists.acl.access.list.entries.ace.matches.ace.type.VppAce;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.acl.rev161214.access.lists.acl.access.list.entries.ace.matches.ace.type.vpp.ace.vpp.ace.nodes.AceIpVersion;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.acl.rev161214.access.lists.acl.access.list.entries.ace.matches.ace.type.vpp.ace.vpp.ace.nodes.ace.ip.version.AceIpv4;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.acl.rev161214.access.lists.acl.access.list.entries.ace.matches.ace.type.vpp.ace.vpp.ace.nodes.ace.ip.version.AceIpv4Builder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.acl.rev161214.access.lists.acl.access.list.entries.ace.matches.ace.type.vpp.ace.vpp.ace.nodes.ace.ip.version.AceIpv6;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.acl.rev161214.access.lists.acl.access.list.entries.ace.matches.ace.type.vpp.ace.vpp.ace.nodes.ace.ip.version.AceIpv6Builder;
public interface StandardAceDataExtractor extends AddressExtractor, ProtoPreBindRuleProducer, IpProtocolReader {
/**
* Allowed packet-processing actions for Acl's
*/
Map<Class<? extends PacketHandling>, Integer> ACTION_VALUE_PAIRS = ImmutableMap.of(Deny.class, 0, Permit.class, 1,
Stateful.class, 2);
default VppAce fromStandardAce(@Nonnull final Ace ace) {
return VppAce.class.cast(ace.getMatches().getAceType());
}
default boolean standardIsIpv6(@Nonnull final Ace ace) {
return VppAce.class.cast(ace.getMatches().getAceType()).getVppAceNodes().getAceIpVersion() instanceof AceIpv6;
}
default byte[] ipv4SourceAddress(@Nonnull final VppAce ace) {
return extractIp4Address(
AclIpv4HeaderFields.class.cast(ace.getVppAceNodes().getAceIpVersion()).getSourceIpv4Network());
}
default byte ipv4SourceAddressPrefix(@Nonnull final VppAce ace) {
return extractIp4AddressPrefix(
AclIpv4HeaderFields.class.cast(ace.getVppAceNodes().getAceIpVersion()).getSourceIpv4Network());
}
default byte[] ipv4DestinationAddress(@Nonnull final VppAce ace) {
return extractIp4Address(
AclIpv4HeaderFields.class.cast(ace.getVppAceNodes().getAceIpVersion()).getDestinationIpv4Network());
}
default byte ipv4DestinationAddressPrefix(@Nonnull final VppAce ace) {
return extractIp4AddressPrefix(AceIpv4.class.cast(ace.getVppAceNodes().getAceIpVersion()).getDestinationIpv4Network());
}
default byte[] ipv6SourceAddress(@Nonnull final VppAce ace) {
return extractIp6Address(
AclIpv6HeaderFields.class.cast(ace.getVppAceNodes().getAceIpVersion()).getSourceIpv6Network());
}
default byte ipv6SourceAddressPrefix(@Nonnull final VppAce ace) {
return extractIp6AddressPrefix(
AclIpv6HeaderFields.class.cast(ace.getVppAceNodes().getAceIpVersion()).getSourceIpv6Network());
}
default byte[] ipv6DestinationAddress(@Nonnull final VppAce ace) {
return extractIp6Address(
AclIpv6HeaderFields.class.cast(ace.getVppAceNodes().getAceIpVersion()).getDestinationIpv6Network());
}
default byte ipv6DestinationAddressPrefix(@Nonnull final VppAce ace) {
return extractIp6AddressPrefix(
AclIpv6HeaderFields.class.cast(ace.getVppAceNodes().getAceIpVersion()).getDestinationIpv6Network());
}
default byte standardAction(@Nonnull final Ace ace) {
final PacketHandling action = ace.getActions().getPacketHandling();
return ACTION_VALUE_PAIRS.get(ACTION_VALUE_PAIRS.keySet().stream()
.filter(aClass -> aClass.isInstance(action))
.findAny()
.orElseThrow(() -> new IllegalArgumentException(
String.format("Unsupported packet-handling action %s for ACE %s", action,
ace.getRuleName())))).byteValue();
}
default AceIpVersion ipVersion(final AclRule rule) {
if (rule.isIpv6 == 0) {
return ip4Ace(rule);
} else {
return ip6Ace(rule);
}
}
default AceIpVersion ip4Ace(final AclRule rule) {
final AceIpv4Builder ipVersion = new AceIpv4Builder();
if (rule.srcIpAddr != null && rule.srcIpAddr.length != 0) {
ipVersion.setSourceIpv4Network(toIpv4Prefix(truncateIp4Array(rule.srcIpAddr), rule.srcIpPrefixLen));
}
if (rule.dstIpAddr != null && rule.dstIpAddr.length != 0) {
ipVersion.setDestinationIpv4Network(toIpv4Prefix(truncateIp4Array(rule.dstIpAddr), rule.dstIpPrefixLen));
}
return ipVersion.build();
}
default AceIpVersion ip6Ace(final AclRule rule) {
final AceIpv6Builder ipVersion = new AceIpv6Builder();
if (rule.srcIpAddr != null && rule.srcIpAddr.length != 0) {
ipVersion.setSourceIpv6Network(toIpv6Prefix(rule.srcIpAddr, rule.srcIpPrefixLen));
}
if (rule.dstIpAddr != null && rule.dstIpAddr.length != 0) {
ipVersion.setDestinationIpv6Network(toIpv6Prefix(rule.dstIpAddr, rule.dstIpPrefixLen));
}
return ipVersion.build();
}
default Actions actions(final byte isPermit) {
final ActionsBuilder actions = new ActionsBuilder();
switch (isPermit) {
case 0:
actions.setPacketHandling(new DenyBuilder().setDeny(true).build());
break;
case 1:
actions.setPacketHandling(new PermitBuilder().setPermit(true).build());
break;
case 2:
actions.setPacketHandling(new StatefulBuilder().setPermit(true).build());
break;
default:
throw new IllegalArgumentException("Unsupported action: " + isPermit);
}
return actions.build();
}
}
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