Examples with AclPermit org.batfish.z3.state.AclPermit used on opensource projects

Example 6 with AclPermit

use of org.batfish.z3.state.AclPermit in project batfish by batfish.

the class DefaultTransitionGeneratorTest method testVisitPreOutEdgePostNat_topologyInterfaceWithNAT.

/**
 * Test the transitions generated for PreOutEdgePostNat for an edge with a source nat.
 */
@Test
public void testVisitPreOutEdgePostNat_topologyInterfaceWithNAT() {
    SynthesizerInput input = MockSynthesizerInput.builder().setEnabledEdges(ImmutableSet.of(new Edge(NODE1, INTERFACE1, NODE2, INTERFACE2))).setTopologyInterfaces(ImmutableMap.of(NODE1, ImmutableSet.of(INTERFACE1))).setSourceNats(ImmutableMap.of(NODE1, ImmutableMap.of(INTERFACE1, ImmutableList.of(Maps.immutableEntry(new AclPermit(NODE1, NAT_ACL1), B1))))).build();
    List<RuleStatement> rules = DefaultTransitionGenerator.generateTransitions(input, ImmutableSet.of(PreOutEdgePostNat.State.INSTANCE));
    RuleStatement permitRule = new TransformationRuleStatement(B1, ImmutableSet.of(new PreOutEdge(NODE1, INTERFACE1, NODE2, INTERFACE2), new AclPermit(NODE1, NAT_ACL1)), ImmutableSet.of(), new PreOutEdgePostNat(NODE1, INTERFACE1, NODE2, INTERFACE2));
    RuleStatement denyRule = new TransformationRuleStatement(new EqExpr(new VarIntExpr(TransformationHeaderField.NEW_SRC_IP), new VarIntExpr(TransformationHeaderField.NEW_SRC_IP.getCurrent())), ImmutableSet.of(new PreOutEdge(NODE1, INTERFACE1, NODE2, INTERFACE2), new AclDeny(NODE1, NAT_ACL1)), ImmutableSet.of(), new PreOutEdgePostNat(NODE1, INTERFACE1, NODE2, INTERFACE2));
    assertThat(rules, containsInAnyOrder(permitRule, denyRule));
}

Example 7 with AclPermit

use of org.batfish.z3.state.AclPermit in project batfish by batfish.

the class DefaultTransitionGeneratorTest method testVisitNodeDropAclOut.

@Test
public void testVisitNodeDropAclOut() {
    SynthesizerInput input = MockSynthesizerInput.builder().setEnabledEdges(ImmutableSet.of(new Edge(NODE1, INTERFACE1, NODE2, INTERFACE1), new Edge(NODE1, INTERFACE2, NODE2, INTERFACE2), new Edge(NODE2, INTERFACE1, NODE1, INTERFACE1), new Edge(NODE2, INTERFACE2, NODE1, INTERFACE2))).setOutgoingAcls(ImmutableMap.of(NODE1, ImmutableMap.of(INTERFACE1, ACL1), NODE2, ImmutableMap.of(INTERFACE1, ACL1, INTERFACE2, ACL2))).setSourceNats(ImmutableMap.of(NODE1, ImmutableMap.of(INTERFACE1, ImmutableList.of(Maps.immutableEntry(new AclPermit(NODE1, NAT_ACL1), TrueExpr.INSTANCE), Maps.immutableEntry(new AclPermit(NODE1, NAT_ACL2), FalseExpr.INSTANCE)), INTERFACE2, ImmutableList.of(Maps.immutableEntry(new AclPermit(NODE1, NAT_ACL1), TrueExpr.INSTANCE), Maps.immutableEntry(new AclPermit(NODE1, NAT_ACL2), FalseExpr.INSTANCE))), NODE2, ImmutableMap.of(INTERFACE1, ImmutableList.of(Maps.immutableEntry(new AclPermit(NODE2, NAT_ACL1), TrueExpr.INSTANCE), Maps.immutableEntry(new AclPermit(NODE2, NAT_ACL1), FalseExpr.INSTANCE)), INTERFACE2, ImmutableList.of()))).setTopologyInterfaces(ImmutableMap.of(NODE1, ImmutableSet.of(INTERFACE1, INTERFACE2), NODE2, ImmutableSet.of(INTERFACE1, INTERFACE2))).build();
    Set<RuleStatement> rules = ImmutableSet.copyOf(DefaultTransitionGenerator.generateTransitions(input, ImmutableSet.of(NodeDropAclOut.State.INSTANCE)));
    // Just test the DropAclOut rules for Node2
    Set<RuleStatement> node2DropAclOutRules = rules.stream().map(BasicRuleStatement.class::cast).filter(rule -> rule.getPostconditionState().equals(new NodeDropAclOut(NODE2))).collect(Collectors.toSet());
    // FailOutgoingAclNoMatchSrcNat
    assertThat(node2DropAclOutRules, containsInAnyOrder(new BasicRuleStatement(TrueExpr.INSTANCE, ImmutableSet.of(new AclDeny(NODE2, ACL1), new PreOutEdgePostNat(NODE2, INTERFACE1, NODE1, INTERFACE1)), new NodeDropAclOut(NODE2)), new BasicRuleStatement(TrueExpr.INSTANCE, ImmutableSet.of(new AclDeny(NODE2, ACL2), new PreOutEdgePostNat(NODE2, INTERFACE2, NODE1, INTERFACE2)), new NodeDropAclOut(NODE2))));
}

Example 8 with AclPermit

use of org.batfish.z3.state.AclPermit in project batfish by batfish.

the class SynthesizerInputImplTest method testSourceNatWithNoAcl.

/**
 * Test that for a SourceNat with no ACL, the SynthesizerInput will have an "accept everything"
 * ACL.
 */
@Test
public void testSourceNatWithNoAcl() {
    Configuration srcNode = _cb.build();
    Configuration nextHop = _cb.build();
    Vrf srcVrf = _vb.setOwner(srcNode).build();
    Vrf nextHopVrf = _vb.setOwner(nextHop).build();
    Ip ip1 = new Ip("1.0.0.0");
    Ip ip2 = new Ip("1.0.0.10");
    SourceNat sourceNat = _snb.setPoolIpFirst(ip1).setPoolIpLast(ip2).build();
    Interface srcInterfaceOneSourceNat = _ib.setOwner(srcNode).setVrf(srcVrf).setSourceNats(ImmutableList.of(sourceNat)).build();
    Interface nextHopInterface = _ib.setOwner(nextHop).setVrf(nextHopVrf).setSourceNats(ImmutableList.of()).build();
    Edge forwardEdge = new Edge(srcInterfaceOneSourceNat, nextHopInterface);
    Edge backEdge = new Edge(nextHopInterface, srcInterfaceOneSourceNat);
    SynthesizerInput inputWithDataPlane = _inputBuilder.setConfigurations(ImmutableMap.of(srcNode.getName(), srcNode, nextHop.getName(), nextHop)).setForwardingAnalysis(MockForwardingAnalysis.builder().build()).setTopology(new Topology(ImmutableSortedSet.of(forwardEdge, backEdge))).build();
    // Acl for the SourceNat is DefaultSourceNatAcl
    assertThat(inputWithDataPlane, hasSourceNats(hasEntry(equalTo(srcNode.getName()), hasEntry(equalTo(srcInterfaceOneSourceNat.getName()), equalTo(ImmutableList.of(immutableEntry(new AclPermit(srcNode.getHostname(), SynthesizerInputImpl.DEFAULT_SOURCE_NAT_ACL.getName()), new RangeMatchExpr(TransformationHeaderField.NEW_SRC_IP, TransformationHeaderField.NEW_SRC_IP.getSize(), ImmutableSet.of(Range.closed(ip1.asLong(), ip2.asLong()))))))))));
    assertThat(inputWithDataPlane, hasAclConditions(hasEntry(srcNode.getHostname(), ImmutableMap.of(SynthesizerInputImpl.DEFAULT_SOURCE_NAT_ACL.getName(), ImmutableList.of(new HeaderSpaceMatchExpr(IpAccessListLine.builder().setSrcIps(ImmutableList.of(new IpWildcard("0.0.0.0/0"))).build()))))));
    assertThat(inputWithDataPlane, hasAclActions(hasEntry(srcNode.getHostname(), ImmutableMap.of(SynthesizerInputImpl.DEFAULT_SOURCE_NAT_ACL.getName(), ImmutableList.of(LineAction.ACCEPT)))));
}

Example 9 with AclPermit

use of org.batfish.z3.state.AclPermit in project batfish by batfish.

the class SynthesizerInputImpl method computeSourceNats.

private Map<String, Map<String, List<Entry<AclPermit, BooleanExpr>>>> computeSourceNats() {
    return toImmutableMap(_topologyInterfaces, Entry::getKey, topologyInterfacesEntryByHostname -> {
        String hostname = topologyInterfacesEntryByHostname.getKey();
        Set<String> ifaces = topologyInterfacesEntryByHostname.getValue();
        Configuration c = _configurations.get(hostname);
        return toImmutableMap(ifaces, Function.identity(), ifaceName -> c.getInterfaces().get(ifaceName).getSourceNats().stream().map(sourceNat -> {
            IpAccessList acl = sourceNat.getAcl();
            String aclName = acl == null ? DEFAULT_SOURCE_NAT_ACL.getName() : acl.getName();
            AclPermit preconditionPreTransformationState = new AclPermit(hostname, aclName);
            BooleanExpr transformationConstraint = new RangeMatchExpr(TransformationHeaderField.NEW_SRC_IP, TransformationHeaderField.NEW_SRC_IP.getSize(), ImmutableSet.of(Range.closed(sourceNat.getPoolIpFirst().asLong(), sourceNat.getPoolIpLast().asLong())));
            return Maps.immutableEntry(preconditionPreTransformationState, transformationConstraint);
        }).collect(ImmutableList.toImmutableList()));
    });
}

Example 10 with AclPermit

use of org.batfish.z3.state.AclPermit in project batfish by batfish.

the class DefaultTransitionGenerator method visitPreOutEdgePostNat_generateMatchSourceNatRules.

private void visitPreOutEdgePostNat_generateMatchSourceNatRules(String node1, String iface1, String node2, String iface2) {
    List<Entry<AclPermit, BooleanExpr>> sourceNats = _input.getSourceNats().get(node1).get(iface1);
    for (int natNumber = 0; natNumber < sourceNats.size(); natNumber++) {
        ImmutableSet.Builder<StateExpr> preStates = ImmutableSet.builder();
        preStates.add(new PreOutEdge(node1, iface1, node2, iface2));
        // does not match any previous source NAT.
        sourceNats.subList(0, natNumber).stream().map(Entry::getKey).map(aclPermit -> new AclDeny(aclPermit.getHostname(), aclPermit.getAcl())).forEach(preStates::add);
        // does match the current source NAT.
        preStates.add(sourceNats.get(natNumber).getKey());
        BooleanExpr transformationExpr = sourceNats.get(natNumber).getValue();
        _rules.add(new TransformationRuleStatement(transformationExpr, preStates.build(), ImmutableSet.of(), new PreOutEdgePostNat(node1, iface1, node2, iface2)));
    }
}