@Override public void applyTo( HeaderSpace.Builder headerSpaceBuilder, JuniperConfiguration jc, Warnings w, Configuration c) { headerSpaceBuilder.setIcmpTypes( Iterables.concat(headerSpaceBuilder.getIcmpTypes(), ImmutableSet.of(_icmpTypeRange))); } }
@Override @Nonnull public AclLineMatchExpr toAclLineMatchExpr(Map<String, ObjectGroup> objectGroups) { return new MatchHeaderSpace( HeaderSpace.builder() .setDscps(_dscps) .setDstPorts(_dstPortRanges) .setEcns(_ecns) .setIcmpCodes( _icmpCode != null ? ImmutableSet.of(new SubRange(_icmpCode)) : ImmutableSet.of()) .setIcmpTypes( _icmpType != null ? ImmutableSet.of(new SubRange(_icmpType)) : ImmutableSet.of()) .setIpProtocols( _protocol != IpProtocol.IP ? ImmutableSet.of(_protocol) : ImmutableSet.of()) .setSrcPorts(_srcPortRanges) .setStates(_states) .setTcpFlags(_tcpFlags) .build()); }
@Override public AclLineMatchExpr toAclLineMatchExpr() { HeaderSpace.Builder b = HeaderSpace.builder().setIpProtocols(ImmutableList.copyOf(_protocols)); b.setDstPorts(_dstPorts); b.setSrcPorts(_srcPorts); if (_icmpType != null) { b.setIcmpTypes(ImmutableList.of(new SubRange(_icmpType))); } return new MatchHeaderSpace(b.build()); } }
l1.setIcmpTypes(ImmutableSet.of(new SubRange(icmpType)));
.setFragmentOffsets(_fragmentOffsets) .setIcmpCodes(_icmpCodes) .setIcmpTypes(_icmpTypes) .setIpProtocols(_ipProtocols) .setNegate(_negate)
public static Optional<HeaderSpace> intersect(HeaderSpace h1, HeaderSpace h2) { checkArgument(isUnconstrained(h1.getSrcOrDstIps())); checkArgument(isUnconstrained(h2.getSrcOrDstIps())); checkArgument(isUnconstrained(h1.getSrcOrDstPorts())); checkArgument(isUnconstrained(h2.getSrcOrDstPorts())); checkArgument(isUnconstrained(h1.getSrcOrDstProtocols())); checkArgument(isUnconstrained(h2.getSrcOrDstProtocols())); try { return Optional.of( HeaderSpace.builder() .setDscps(intersectSimpleSets(h1.getDscps(), h2.getDscps())) .setDstIps(intersection(h1.getDstIps(), h2.getDstIps())) .setDstPorts(intersectSubRangeSets(h1.getDstPorts(), h2.getDstPorts())) .setDstProtocols(intersectSimpleSets(h1.getDstProtocols(), h2.getDstProtocols())) .setIpProtocols(intersectSimpleSets(h1.getIpProtocols(), h2.getIpProtocols())) .setIcmpCodes(intersectSubRangeSets(h1.getIcmpCodes(), h2.getIcmpCodes())) .setIcmpTypes(intersectSubRangeSets(h1.getIcmpTypes(), h2.getIcmpTypes())) .setNotDstIps(AclIpSpace.union(h1.getNotDstIps(), h2.getNotDstIps())) .setNotDstPorts(Sets.union(h1.getNotDstPorts(), h2.getNotDstPorts())) .setNotSrcIps(AclIpSpace.union(h1.getNotSrcIps(), h2.getNotSrcIps())) .setNotSrcPorts(Sets.union(h1.getNotSrcPorts(), h2.getNotSrcPorts())) .setSrcIps(AclIpSpace.intersection(h1.getSrcIps(), h2.getSrcIps())) .setSrcOrDstPorts(intersectSubRangeSets(h1.getSrcOrDstPorts(), h2.getSrcOrDstPorts())) .setSrcPorts(intersectSubRangeSets(h1.getSrcPorts(), h2.getSrcPorts())) .setTcpFlags(intersectTcpFlagMatchConditions(h1.getTcpFlags(), h2.getTcpFlags())) .build()); } catch (NoIntersection e) { return Optional.empty(); } }
@Test public void testWithIcmpType() { // First line accepts IP 1.2.3.4 // Second line accepts same but only ICMP of type 8 List<IpAccessListLine> lines = ImmutableList.of( IpAccessListLine.acceptingHeaderSpace( HeaderSpace.builder().setSrcIps(Ip.parse("1.2.3.4").toIpSpace()).build()), IpAccessListLine.acceptingHeaderSpace( HeaderSpace.builder() .setSrcIps(Ip.parse("1.2.3.4").toIpSpace()) .setIpProtocols(ImmutableSet.of(IpProtocol.ICMP)) .setIcmpTypes(ImmutableList.of(new SubRange(8))) .build())); _aclb.setLines(lines).setName("acl").build(); List<String> lineNames = lines.stream().map(Object::toString).collect(Collectors.toList()); TableAnswerElement answer = answer(new FilterLineReachabilityQuestion()); // Construct the expected result. First line should block second. Multiset<Row> expected = ImmutableMultiset.of( Row.builder(COLUMN_METADATA) .put(COL_SOURCES, ImmutableList.of(_c1.getHostname() + ": acl")) .put(COL_UNREACHABLE_LINE, lineNames.get(1)) .put(COL_UNREACHABLE_LINE_ACTION, LineAction.PERMIT) .put(COL_BLOCKING_LINES, ImmutableList.of(lineNames.get(0))) .put(COL_DIFF_ACTION, false) .put(COL_REASON, BLOCKING_LINES) .build()); assertThat(answer.getRows().getData(), equalTo(expected)); }
/** * Convert packet header constraints to a {@link HeaderSpace.Builder} * * <p><b>Does not resolve/set source and destination IPs</b> */ public static HeaderSpace.Builder toHeaderSpaceBuilder(PacketHeaderConstraints phc) { // Note: headerspace builder does not accept nulls, so we have to convert nulls to empty sets HeaderSpace.Builder builder = HeaderSpace.builder() .setIpProtocols(firstNonNull(phc.resolveIpProtocols(), ImmutableSortedSet.of())) .setSrcPorts(extractSubranges(phc.getSrcPorts())) .setDstPorts(extractSubranges(phc.resolveDstPorts())) .setIcmpCodes(extractSubranges(phc.getIcmpCodes())) .setIcmpTypes(extractSubranges(phc.getIcmpTypes())) .setDstProtocols(firstNonNull(phc.getApplications(), ImmutableSortedSet.of())) .setFragmentOffsets(extractSubranges(phc.getFragmentOffsets())) .setPacketLengths(extractSubranges(phc.getPacketLengths())) .setTcpFlags(firstNonNull(phc.getTcpFlags(), ImmutableSet.of())) .setStates(firstNonNull(phc.getFlowStates(), ImmutableSortedSet.of())); if (phc.getDscps() != null) { builder.setDscps(phc.getDscps().enumerate()); } if (phc.getEcns() != null) { builder.setEcns(ImmutableSortedSet.copyOf(phc.getEcns().enumerate())); } return builder; }
@Override public HeaderSpace specialize(HeaderSpace headerSpace) { return headerSpace .toBuilder() // combine dstIps and notDstIps into dstIps .setDstIps(specializeIpSpace(headerSpace.getDstIps(), _dstIpSpaceSpecializer)) .setNotDstIps(specializeIpSpace(headerSpace.getNotDstIps(), _dstIpSpaceSpecializer)) .setDstPorts(specializeSubRange(headerSpace.getDstPorts(), _pkt.getDstPort())) .setNotDstPorts(specializeSubRange(headerSpace.getNotDstPorts(), _pkt.getDstPort())) .setIpProtocols(specializeIpProtocols(headerSpace.getIpProtocols())) .setIcmpCodes(specializeSubRange(headerSpace.getIcmpCodes(), _pkt.getIcmpCode())) .setIcmpTypes(specializeSubRange(headerSpace.getIcmpTypes(), _pkt.getIcmpType())) .setSrcOrDstIps( specializeIpSpace( headerSpace.getSrcOrDstIps(), _dstIpSpaceSpecializer, _srcIpSpaceSpecializer)) .setSrcOrDstPorts( specializeSubRange( headerSpace.getSrcOrDstPorts(), _pkt.getSrcPort(), _pkt.getDstPort())) .setSrcPorts(specializeSubRange(headerSpace.getSrcPorts(), _pkt.getSrcPort())) .setNotSrcPorts(specializeSubRange(headerSpace.getNotSrcPorts(), _pkt.getSrcPort())) .setSrcIps(specializeIpSpace(headerSpace.getSrcIps(), _srcIpSpaceSpecializer)) .setNotSrcIps(specializeIpSpace(headerSpace.getNotSrcIps(), _srcIpSpaceSpecializer)) .setTcpFlags(specializeTcpFlags(headerSpace.getTcpFlags())) .build(); }
@Test public void test_icmpType() { HeaderSpace headerSpace = HeaderSpace.builder().setIcmpTypes(ImmutableList.of(new SubRange(8, 8))).build(); BDD matchExprBDD = _toBDD.toBDD(headerSpace); BDD icmpTypeBDD = _pkt.getIcmpType().value(8); assertThat(matchExprBDD, equalTo(icmpTypeBDD)); }
@Override public AclLineMatchExpr toAclLineMatchExpr() { return new MatchHeaderSpace( HeaderSpace.builder().setIcmpTypes(ImmutableList.of(new SubRange(_type))).build()); } }