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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.protocol;
import static io.fd.hc2vpp.acl.util.protocol.ProtoPreBindRuleProducer.ICMPV6_INDEX;
import static io.fd.hc2vpp.acl.util.protocol.ProtoPreBindRuleProducer.ICMP_INDEX;
import static io.fd.hc2vpp.acl.util.protocol.ProtoPreBindRuleProducer.TCP_INDEX;
import static io.fd.hc2vpp.acl.util.protocol.ProtoPreBindRuleProducer.UDP_INDEX;
import com.google.common.annotations.VisibleForTesting;
import io.fd.vpp.jvpp.acl.types.AclRule;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.VppIcmpAceAugmentation;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.VppIcmpAceAugmentationBuilder;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.VppTcpAceAugmentation;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.VppTcpAceAugmentationBuilder;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.acl.icmp.header.fields.IcmpCodeRange;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.acl.icmp.header.fields.IcmpCodeRangeBuilder;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.acl.icmp.header.fields.IcmpTypeRange;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.acl.icmp.header.fields.IcmpTypeRangeBuilder;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.acls.acl.aces.ace.matches.l4.icmp.icmp.VppIcmpAceBuilder;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.acls.acl.aces.ace.matches.l4.tcp.tcp.VppTcpAceBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.L4;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.Icmp;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.IcmpBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.Tcp;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.TcpBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.Udp;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.UdpBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.tcp.tcp.DestinationPortBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.tcp.tcp.SourcePortBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.tcp.tcp.source.port.source.port.RangeOrOperatorBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.PortNumber;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.packet.fields.rev181001.AclTcpHeaderFields;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.packet.fields.rev181001.port.range.or.operator.PortRangeOrOperator;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.packet.fields.rev181001.port.range.or.operator.port.range.or.operator.Range;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.packet.fields.rev181001.port.range.or.operator.port.range.or.operator.RangeBuilder;
/**
* Utility for parsing IpProtocol DO based on data returned by vpp as {@link AclRule}.
*/
public interface IpProtocolReader {
default L4 parseProtocol(final AclRule rule) {
switch (rule.proto) {
case ICMPV6_INDEX:
case ICMP_INDEX: {
return Impl.parseIcmp(rule);
}
case TCP_INDEX: {
return Impl.parseTcp(rule);
}
case UDP_INDEX: {
return Impl.parseUdp(rule);
}
}
return null;
}
class Impl {
private static IcmpCodeRange parseIcmpCodeRange(final AclRule rule) {
return new IcmpCodeRangeBuilder()
.setFirst(rule.dstportOrIcmpcodeFirst)
.setLast(rule.dstportOrIcmpcodeLast).build();
}
private static IcmpTypeRange parseIcmpTypeRange(final AclRule rule) {
return new IcmpTypeRangeBuilder()
.setFirst(rule.srcportOrIcmptypeFirst)
.setLast(rule.srcportOrIcmptypeLast).build();
}
private static Icmp parseIcmp(final AclRule rule) {
return new IcmpBuilder().setIcmp(
new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.icmp.IcmpBuilder()
.addAugmentation(VppIcmpAceAugmentation.class,
new VppIcmpAceAugmentationBuilder()
.setVppIcmpAce(new VppIcmpAceBuilder()
.setIcmpCodeRange(parseIcmpCodeRange(rule))
.setIcmpTypeRange(parseIcmpTypeRange(rule))
.build())
.build())
.build())
.build();
}
private static PortRangeOrOperator parseDstPortRange(final AclRule rule) {
return new RangeBuilder()
.setLowerPort(new PortNumber(Short.toUnsignedInt(rule.dstportOrIcmpcodeFirst)))
.setUpperPort(new PortNumber(Short.toUnsignedInt(rule.dstportOrIcmpcodeLast))).build();
}
private static Range parseSrcPortRange(final AclRule rule) {
return new RangeBuilder()
.setLowerPort(new PortNumber(Short.toUnsignedInt(rule.srcportOrIcmptypeFirst)))
.setUpperPort(new PortNumber(Short.toUnsignedInt(rule.srcportOrIcmptypeLast))).build();
}
private static Tcp parseTcp(final AclRule rule) {
return new TcpBuilder().setTcp(
new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.tcp.TcpBuilder()
.setFlags(parseTcpFlags((short) Byte.toUnsignedInt(rule.tcpFlagsValue)))
.addAugmentation(VppTcpAceAugmentation.class, new VppTcpAceAugmentationBuilder()
.setVppTcpAce(new VppTcpAceBuilder()
.setFlagsMask(
parseTcpFlagsMask((short) Byte.toUnsignedInt(rule.tcpFlagsMask)))
.build())
.build())
.setSourcePort(new SourcePortBuilder()
.setSourcePort(new RangeOrOperatorBuilder()
.setPortRangeOrOperator(parseSrcPortRange(rule))
.build())
.build())
.setDestinationPort(new DestinationPortBuilder()
.setDestinationPort(
new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.tcp.tcp.destination.port.destination.port.RangeOrOperatorBuilder()
.setPortRangeOrOperator(parseDstPortRange(rule))
.build())
.build())
.build())
.build();
}
@VisibleForTesting
private static org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.AclTcpHeaderFields.FlagsMask parseTcpFlagsMask(
final short tcpFlagsMask) {
// Flags from bit on position 1 to 8
final Boolean cwr = (tcpFlagsMask & 0b00000001) == 1;
final Boolean ece = (tcpFlagsMask & 0b00000010) >> 1 == 1;
final Boolean urg = (tcpFlagsMask & 0b00000100) >> 2 == 1;
final Boolean ack = (tcpFlagsMask & 0b00001000) >> 3 == 1;
final Boolean psh = (tcpFlagsMask & 0b00010000) >> 4 == 1;
final Boolean rst = (tcpFlagsMask & 0b00100000) >> 5 == 1;
final Boolean syn = (tcpFlagsMask & 0b01000000) >> 6 == 1;
final Boolean fin = (tcpFlagsMask & 0b10000000) >> 7 == 1;
return new org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.acl.rev181022.AclTcpHeaderFields.FlagsMask(
ack, cwr, ece, fin, psh, rst, syn, urg);
}
@VisibleForTesting
private static AclTcpHeaderFields.Flags parseTcpFlags(final short tcpFlagsValue) {
// Flags from bit on position 1 to 8
final Boolean cwr = (tcpFlagsValue & 0b00000001) == 1;
final Boolean ece = (tcpFlagsValue & 0b00000010) >> 1 == 1;
final Boolean urg = (tcpFlagsValue & 0b00000100) >> 2 == 1;
final Boolean ack = (tcpFlagsValue & 0b00001000) >> 3 == 1;
final Boolean psh = (tcpFlagsValue & 0b00010000) >> 4 == 1;
final Boolean rst = (tcpFlagsValue & 0b00100000) >> 5 == 1;
final Boolean syn = (tcpFlagsValue & 0b01000000) >> 6 == 1;
final Boolean fin = (tcpFlagsValue & 0b10000000) >> 7 == 1;
return new AclTcpHeaderFields.Flags(ack, cwr, ece, fin, psh, rst, syn, urg);
}
private static Udp parseUdp(final AclRule rule) {
return new UdpBuilder().setUdp(
new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.udp.UdpBuilder()
.setSourcePort(
new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.udp.udp.SourcePortBuilder()
.setSourcePort(
new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.udp.udp.source.port.source.port.RangeOrOperatorBuilder()
.setPortRangeOrOperator(parseSrcPortRange(rule))
.build())
.build())
.setDestinationPort(
new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.udp.udp.DestinationPortBuilder()
.setDestinationPort(
new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev181001.acls.acl.aces.ace.matches.l4.udp.udp.destination.port.destination.port.RangeOrOperatorBuilder()
.setPortRangeOrOperator(parseDstPortRange(rule))
.build())
.build())
.build())
.build();
}
}
}
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