/
policy_test.go
1251 lines (1155 loc) · 36.9 KB
/
policy_test.go
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// Copyright 2016-2020 Authors of Cilium
//
// 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.
// +build !privileged_tests
package cmd
import (
"context"
"fmt"
"os"
"sort"
"time"
"github.com/cilium/cilium/pkg/addressing"
"github.com/cilium/cilium/pkg/checker"
"github.com/cilium/cilium/pkg/endpoint"
"github.com/cilium/cilium/pkg/endpoint/id"
"github.com/cilium/cilium/pkg/endpoint/regeneration"
"github.com/cilium/cilium/pkg/identity"
"github.com/cilium/cilium/pkg/k8s"
k8sConst "github.com/cilium/cilium/pkg/k8s/apis/cilium.io"
"github.com/cilium/cilium/pkg/k8s/apis/cilium.io/utils"
v2 "github.com/cilium/cilium/pkg/k8s/apis/cilium.io/v2"
"github.com/cilium/cilium/pkg/k8s/types"
"github.com/cilium/cilium/pkg/labels"
"github.com/cilium/cilium/pkg/logging"
"github.com/cilium/cilium/pkg/metrics"
"github.com/cilium/cilium/pkg/option"
"github.com/cilium/cilium/pkg/policy"
"github.com/cilium/cilium/pkg/policy/api"
"github.com/cilium/cilium/pkg/testutils"
cilium "github.com/cilium/proxy/go/cilium/api"
envoy_api_v2_core "github.com/cilium/proxy/go/envoy/api/v2/core"
envoy_api_v2_route "github.com/cilium/proxy/go/envoy/api/v2/route"
envoy_type_matcher "github.com/cilium/proxy/go/envoy/type/matcher"
"github.com/golang/protobuf/ptypes/wrappers"
. "gopkg.in/check.v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
k8sTypes "k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/tools/cache"
)
var (
QAIPv6Addr, _ = addressing.NewCiliumIPv6("beef:beef:beef:beef:aaaa:aaaa:1111:1112")
QAIPv4Addr, _ = addressing.NewCiliumIPv4("10.11.12.13")
ProdIPv6Addr, _ = addressing.NewCiliumIPv6("cafe:cafe:cafe:cafe:aaaa:aaaa:1111:1112")
ProdIPv4Addr, _ = addressing.NewCiliumIPv4("10.11.12.14")
lblProd = labels.ParseLabel("Prod")
lblQA = labels.ParseLabel("QA")
lblFoo = labels.ParseLabel("foo")
lblBar = labels.ParseLabel("bar")
lblJoe = labels.ParseLabel("user=joe")
lblPete = labels.ParseLabel("user=pete")
testEndpointID = uint16(1)
regenerationMetadata = ®eneration.ExternalRegenerationMetadata{
Reason: "test",
RegenerationLevel: regeneration.RegenerateWithoutDatapath,
}
CNPAllowTCP80 = api.PortRule{
Ports: []api.PortProtocol{
{Port: "80", Protocol: api.ProtoTCP},
},
}
CNPAllowGETbar = api.PortRule{
Ports: CNPAllowTCP80.Ports,
Rules: &api.L7Rules{
HTTP: []api.PortRuleHTTP{
{
Path: "/bar",
Method: "GET",
},
},
},
}
CNPAllowGETbarLog = api.PortRule{
Ports: CNPAllowTCP80.Ports,
Rules: &api.L7Rules{
HTTP: []api.PortRuleHTTP{
{
Method: "GET",
HeaderMatches: []*api.HeaderMatch{{
Mismatch: api.MismatchActionLog,
Name: ":path",
Value: "/bar",
}},
},
},
},
}
PNPAllowAll = cilium.PortNetworkPolicyRule_HttpRules{
HttpRules: &cilium.HttpNetworkPolicyRules{
HttpRules: []*cilium.HttpNetworkPolicyRule{
{},
},
},
}
googleRe2 = &envoy_type_matcher.RegexMatcher_GoogleRe2{
GoogleRe2: &envoy_type_matcher.RegexMatcher_GoogleRE2{
MaxProgramSize: &wrappers.UInt32Value{Value: 100}, // Envoy default
}}
PNPAllowGETbar = cilium.PortNetworkPolicyRule_HttpRules{
HttpRules: &cilium.HttpNetworkPolicyRules{
HttpRules: []*cilium.HttpNetworkPolicyRule{
{
Headers: []*envoy_api_v2_route.HeaderMatcher{
{
Name: ":method",
HeaderMatchSpecifier: &envoy_api_v2_route.HeaderMatcher_SafeRegexMatch{
SafeRegexMatch: &envoy_type_matcher.RegexMatcher{
EngineType: googleRe2,
Regex: "GET",
}},
},
{
Name: ":path",
HeaderMatchSpecifier: &envoy_api_v2_route.HeaderMatcher_SafeRegexMatch{
SafeRegexMatch: &envoy_type_matcher.RegexMatcher{
EngineType: googleRe2,
Regex: "/bar",
}},
},
},
},
},
},
}
PNPAllowGETbarLog = cilium.PortNetworkPolicyRule_HttpRules{
HttpRules: &cilium.HttpNetworkPolicyRules{
HttpRules: []*cilium.HttpNetworkPolicyRule{
{
Headers: []*envoy_api_v2_route.HeaderMatcher{
{
Name: ":method",
HeaderMatchSpecifier: &envoy_api_v2_route.HeaderMatcher_SafeRegexMatch{
SafeRegexMatch: &envoy_type_matcher.RegexMatcher{
EngineType: googleRe2,
Regex: "GET",
}},
},
},
HeaderMatches: []*cilium.HeaderMatch{
{
Name: ":path",
Value: "/bar",
MismatchAction: cilium.HeaderMatch_CONTINUE_ON_MISMATCH,
},
},
},
},
},
}
PNPAllowWildcardGETbar = cilium.PortNetworkPolicyRule_HttpRules{
HttpRules: &cilium.HttpNetworkPolicyRules{
HttpRules: []*cilium.HttpNetworkPolicyRule{
{},
PNPAllowGETbar.HttpRules.HttpRules[0],
},
},
}
)
// getXDSNetworkPolicies returns the representation of the xDS network policies
// as a map of IP addresses to NetworkPolicy objects
func (ds *DaemonSuite) getXDSNetworkPolicies(c *C, resourceNames []string) map[string]*cilium.NetworkPolicy {
networkPolicies, err := ds.d.l7Proxy.GetNetworkPolicies(resourceNames)
c.Assert(err, IsNil)
return networkPolicies
}
func prepareEndpointDirs() (cleanup func(), err error) {
testEPDir := fmt.Sprintf("%d", testEndpointID)
if err = os.Mkdir(testEPDir, 0755); err != nil {
return func() {}, err
}
return func() {
os.RemoveAll(fmt.Sprintf("%s/lxc_config.h", testEPDir))
time.Sleep(1 * time.Second)
os.RemoveAll(testEPDir)
os.RemoveAll(fmt.Sprintf("%s_backup", testEPDir))
}, nil
}
func (ds *DaemonSuite) prepareEndpoint(c *C, identity *identity.Identity, qa bool) *endpoint.Endpoint {
e := endpoint.NewEndpointWithState(ds.d, ds.d.l7Proxy, ds.d.identityAllocator, testEndpointID, endpoint.StateWaitingForIdentity)
if qa {
e.IPv6 = QAIPv6Addr
e.IPv4 = QAIPv4Addr
} else {
e.IPv6 = ProdIPv6Addr
e.IPv4 = ProdIPv4Addr
}
e.SetIdentity(identity, true)
ready := e.SetState(endpoint.StateWaitingToRegenerate, "test")
c.Assert(ready, Equals, true)
buildSuccess := <-e.Regenerate(regenerationMetadata)
c.Assert(buildSuccess, Equals, true)
return e
}
func (ds *DaemonSuite) regenerateEndpoint(c *C, e *endpoint.Endpoint) {
ready := e.SetState(endpoint.StateWaitingToRegenerate, "test")
c.Assert(ready, Equals, true)
buildSuccess := <-e.Regenerate(regenerationMetadata)
c.Assert(buildSuccess, Equals, true)
}
func (ds *DaemonSuite) TestUpdateConsumerMap(c *C) {
logging.ConfigureLogLevel(false) // Use 'true' for debugging
rules := api.Rules{
{
EndpointSelector: api.NewESFromLabels(lblBar),
Ingress: []api.IngressRule{
{
FromEndpoints: []api.EndpointSelector{
api.NewESFromLabels(lblJoe),
api.NewESFromLabels(lblPete),
api.NewESFromLabels(lblFoo),
},
},
{
FromEndpoints: []api.EndpointSelector{
api.NewESFromLabels(lblFoo),
},
ToPorts: []api.PortRule{
// Allow Port 80 GET /bar
CNPAllowGETbar,
},
},
},
},
{
EndpointSelector: api.NewESFromLabels(lblQA),
Ingress: []api.IngressRule{
{
FromRequires: []api.EndpointSelector{
api.NewESFromLabels(lblQA),
},
},
},
},
{
EndpointSelector: api.NewESFromLabels(lblProd),
Ingress: []api.IngressRule{
{
FromRequires: []api.EndpointSelector{
api.NewESFromLabels(lblProd),
},
},
},
},
}
ds.d.l7Proxy.RemoveAllNetworkPolicies()
_, err3 := ds.d.PolicyAdd(rules, nil)
c.Assert(err3, Equals, nil)
// Prepare the identities necessary for testing
qaBarLbls := labels.Labels{lblBar.Key: lblBar, lblQA.Key: lblQA}
qaBarSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), qaBarLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), qaBarSecLblsCtx)
prodBarLbls := labels.Labels{lblBar.Key: lblBar, lblProd.Key: lblProd}
prodBarSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), prodBarLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), prodBarSecLblsCtx)
qaFooLbls := labels.Labels{lblFoo.Key: lblFoo, lblQA.Key: lblQA}
qaFooSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), qaFooLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), qaFooSecLblsCtx)
prodFooLbls := labels.Labels{lblFoo.Key: lblFoo, lblProd.Key: lblProd}
prodFooSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), prodFooLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), prodFooSecLblsCtx)
prodFooJoeLbls := labels.Labels{lblFoo.Key: lblFoo, lblProd.Key: lblProd, lblJoe.Key: lblJoe}
prodFooJoeSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), prodFooJoeLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), prodFooJoeSecLblsCtx)
// Prepare endpoints
cleanup, err2 := prepareEndpointDirs()
c.Assert(err2, Equals, nil)
defer cleanup()
e := ds.prepareEndpoint(c, qaBarSecLblsCtx, true)
c.Assert(e.Allows(qaBarSecLblsCtx.ID), Equals, false)
c.Assert(e.Allows(prodBarSecLblsCtx.ID), Equals, false)
c.Assert(e.Allows(qaFooSecLblsCtx.ID), Equals, true)
c.Assert(e.Allows(prodFooSecLblsCtx.ID), Equals, false)
e = ds.prepareEndpoint(c, prodBarSecLblsCtx, false)
c.Assert(e.Allows(0), Equals, false)
c.Assert(e.Allows(qaBarSecLblsCtx.ID), Equals, false)
c.Assert(e.Allows(prodBarSecLblsCtx.ID), Equals, false)
c.Assert(e.Allows(qaFooSecLblsCtx.ID), Equals, false)
c.Assert(e.Allows(prodFooSecLblsCtx.ID), Equals, true)
c.Assert(e.Allows(prodFooJoeSecLblsCtx.ID), Equals, true)
// Check that both policies have been updated in the xDS cache for the L7
// proxies.
networkPolicies := ds.getXDSNetworkPolicies(c, nil)
c.Assert(networkPolicies, HasLen, 4)
qaBarNetworkPolicy := networkPolicies[QAIPv4Addr.String()]
c.Assert(qaBarNetworkPolicy, Not(IsNil))
expectedRemotePolicies := []uint64{
uint64(qaFooSecLblsCtx.ID),
// The prodFoo* identities are allowed by FromEndpoints but rejected by
// FromRequires, so they are not included in the remote policies:
// uint64(prodFooSecLblsCtx.ID),
// uint64(prodFooJoeSecLblsCtx.ID),
}
sort.Slice(expectedRemotePolicies, func(i, j int) bool {
return expectedRemotePolicies[i] < expectedRemotePolicies[j]
})
expectedNetworkPolicy := &cilium.NetworkPolicy{
Name: QAIPv4Addr.String(),
Policy: uint64(qaBarSecLblsCtx.ID),
ConntrackMapName: "global",
IngressPerPortPolicies: []*cilium.PortNetworkPolicy{
{
Port: 0,
Protocol: envoy_api_v2_core.SocketAddress_TCP,
Rules: []*cilium.PortNetworkPolicyRule{
{
RemotePolicies: expectedRemotePolicies,
},
},
},
{
Port: 80,
Protocol: envoy_api_v2_core.SocketAddress_TCP,
Rules: []*cilium.PortNetworkPolicyRule{
{
RemotePolicies: expectedRemotePolicies,
L7: &PNPAllowGETbar,
},
},
},
},
EgressPerPortPolicies: []*cilium.PortNetworkPolicy{ // Allow-all policy.
{Protocol: envoy_api_v2_core.SocketAddress_TCP},
{Protocol: envoy_api_v2_core.SocketAddress_UDP},
},
}
c.Assert(qaBarNetworkPolicy, checker.Equals, expectedNetworkPolicy)
prodBarNetworkPolicy := networkPolicies[ProdIPv4Addr.String()]
c.Assert(prodBarNetworkPolicy, Not(IsNil))
expectedRemotePolicies = []uint64{
// The qaFoo identity is allowed by FromEndpoints but rejected by
// FromRequires, so it is not included in the remote policies:
// uint64(qaFooSecLblsCtx.ID),
uint64(prodFooSecLblsCtx.ID),
uint64(prodFooJoeSecLblsCtx.ID),
}
sort.Slice(expectedRemotePolicies, func(i, j int) bool {
return expectedRemotePolicies[i] < expectedRemotePolicies[j]
})
expectedRemotePolicies2 := []uint64{
uint64(prodFooJoeSecLblsCtx.ID),
}
sort.Slice(expectedRemotePolicies2, func(i, j int) bool {
return expectedRemotePolicies2[i] < expectedRemotePolicies2[j]
})
expectedNetworkPolicy = &cilium.NetworkPolicy{
Name: ProdIPv4Addr.String(),
Policy: uint64(prodBarSecLblsCtx.ID),
ConntrackMapName: "global",
IngressPerPortPolicies: []*cilium.PortNetworkPolicy{
{
Port: 0,
Protocol: envoy_api_v2_core.SocketAddress_TCP,
Rules: []*cilium.PortNetworkPolicyRule{
{
RemotePolicies: expectedRemotePolicies,
},
},
},
{
Port: 80,
Protocol: envoy_api_v2_core.SocketAddress_TCP,
Rules: []*cilium.PortNetworkPolicyRule{
{
RemotePolicies: expectedRemotePolicies,
L7: &PNPAllowGETbar,
},
},
},
},
EgressPerPortPolicies: []*cilium.PortNetworkPolicy{ // Allow-all policy.
{Protocol: envoy_api_v2_core.SocketAddress_TCP},
{Protocol: envoy_api_v2_core.SocketAddress_UDP},
},
}
c.Assert(prodBarNetworkPolicy, checker.Equals, expectedNetworkPolicy)
}
func (ds *DaemonSuite) TestL4_L7_Shadowing(c *C) {
logging.ConfigureLogLevel(false) // Use 'true' for debugging
// Prepare the identities necessary for testing
qaBarLbls := labels.Labels{lblBar.Key: lblBar, lblQA.Key: lblQA}
qaBarSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), qaBarLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), qaBarSecLblsCtx)
qaFooLbls := labels.Labels{lblFoo.Key: lblFoo, lblQA.Key: lblQA}
qaFooSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), qaFooLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), qaFooSecLblsCtx)
rules := api.Rules{
{
EndpointSelector: api.NewESFromLabels(lblBar),
Ingress: []api.IngressRule{
{
ToPorts: []api.PortRule{
// Allow all on port 80 (no proxy)
CNPAllowTCP80,
},
},
{
FromEndpoints: []api.EndpointSelector{
api.NewESFromLabels(lblFoo),
},
ToPorts: []api.PortRule{
// Allow Port 80 GET /bar
CNPAllowGETbarLog,
},
},
},
},
}
ds.d.l7Proxy.RemoveAllNetworkPolicies()
_, err = ds.d.PolicyAdd(rules, nil)
c.Assert(err, Equals, nil)
// Prepare endpoints
cleanup, err := prepareEndpointDirs()
c.Assert(err, Equals, nil)
defer cleanup()
e := ds.prepareEndpoint(c, qaBarSecLblsCtx, true)
c.Assert(e.Allows(qaBarSecLblsCtx.ID), Equals, false)
c.Assert(e.Allows(qaFooSecLblsCtx.ID), Equals, false)
// Check that both policies have been updated in the xDS cache for the L7
// proxies.
networkPolicies := ds.getXDSNetworkPolicies(c, nil)
c.Assert(networkPolicies, HasLen, 2)
qaBarNetworkPolicy := networkPolicies[QAIPv4Addr.String()]
expectedNetworkPolicy := &cilium.NetworkPolicy{
Name: QAIPv4Addr.String(),
Policy: uint64(qaBarSecLblsCtx.ID),
ConntrackMapName: "global",
IngressPerPortPolicies: []*cilium.PortNetworkPolicy{
{
Port: 80,
Protocol: envoy_api_v2_core.SocketAddress_TCP,
Rules: []*cilium.PortNetworkPolicyRule{
{},
{
RemotePolicies: []uint64{uint64(qaFooSecLblsCtx.ID)},
L7: &PNPAllowGETbarLog,
},
},
},
},
EgressPerPortPolicies: []*cilium.PortNetworkPolicy{ // Allow-all policy.
{Protocol: envoy_api_v2_core.SocketAddress_TCP},
{Protocol: envoy_api_v2_core.SocketAddress_UDP},
},
}
c.Assert(qaBarNetworkPolicy, checker.Equals, expectedNetworkPolicy)
}
// HTTP rules here have no side effects, so the L4 allow-all rule is
// short-circuiting the HTTP rules (i.e., the network policy sent to
// envoy does not even have the HTTP rules).
func (ds *DaemonSuite) TestL4_L7_ShadowingShortCircuit(c *C) {
logging.ConfigureLogLevel(false) // Use 'true' for debugging
// Prepare the identities necessary for testing
qaBarLbls := labels.Labels{lblBar.Key: lblBar, lblQA.Key: lblQA}
qaBarSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), qaBarLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), qaBarSecLblsCtx)
qaFooLbls := labels.Labels{lblFoo.Key: lblFoo, lblQA.Key: lblQA}
qaFooSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), qaFooLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), qaFooSecLblsCtx)
rules := api.Rules{
{
EndpointSelector: api.NewESFromLabels(lblBar),
Ingress: []api.IngressRule{
{
ToPorts: []api.PortRule{
// Allow all on port 80 (no proxy)
CNPAllowTCP80,
},
},
{
FromEndpoints: []api.EndpointSelector{
api.NewESFromLabels(lblFoo),
},
ToPorts: []api.PortRule{
// Allow Port 80 GET /bar
CNPAllowGETbar,
},
},
},
},
}
ds.d.l7Proxy.RemoveAllNetworkPolicies()
_, err = ds.d.PolicyAdd(rules, nil)
c.Assert(err, Equals, nil)
// Prepare endpoints
cleanup, err := prepareEndpointDirs()
c.Assert(err, Equals, nil)
defer cleanup()
e := ds.prepareEndpoint(c, qaBarSecLblsCtx, true)
c.Assert(e.Allows(qaBarSecLblsCtx.ID), Equals, false)
c.Assert(e.Allows(qaFooSecLblsCtx.ID), Equals, false)
// Check that both policies have been updated in the xDS cache for the L7
// proxies.
networkPolicies := ds.getXDSNetworkPolicies(c, nil)
c.Assert(networkPolicies, HasLen, 2)
qaBarNetworkPolicy := networkPolicies[QAIPv4Addr.String()]
expectedNetworkPolicy := &cilium.NetworkPolicy{
Name: QAIPv4Addr.String(),
Policy: uint64(qaBarSecLblsCtx.ID),
ConntrackMapName: "global",
IngressPerPortPolicies: []*cilium.PortNetworkPolicy{
{
Port: 80,
Protocol: envoy_api_v2_core.SocketAddress_TCP,
Rules: nil,
},
},
EgressPerPortPolicies: []*cilium.PortNetworkPolicy{ // Allow-all policy.
{Protocol: envoy_api_v2_core.SocketAddress_TCP},
{Protocol: envoy_api_v2_core.SocketAddress_UDP},
},
}
c.Assert(qaBarNetworkPolicy, checker.Equals, expectedNetworkPolicy)
}
func (ds *DaemonSuite) TestL3_dependent_L7(c *C) {
logging.ConfigureLogLevel(true) // Use 'true' for debugging
defer logging.ConfigureLogLevel(false)
// Prepare the identities necessary for testing
qaBarLbls := labels.Labels{lblBar.Key: lblBar, lblQA.Key: lblQA}
qaBarSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), qaBarLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), qaBarSecLblsCtx)
qaFooLbls := labels.Labels{lblFoo.Key: lblFoo, lblQA.Key: lblQA}
qaFooSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), qaFooLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), qaFooSecLblsCtx)
qaJoeLbls := labels.Labels{lblJoe.Key: lblJoe, lblQA.Key: lblQA}
qaJoeSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), qaJoeLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), qaJoeSecLblsCtx)
rules := api.Rules{
{
EndpointSelector: api.NewESFromLabels(lblBar),
Ingress: []api.IngressRule{
{
FromEndpoints: []api.EndpointSelector{
api.NewESFromLabels(lblFoo),
},
ToPorts: []api.PortRule{
// Allow Port 80 GET /bar
CNPAllowGETbar,
},
},
},
},
{
EndpointSelector: api.NewESFromLabels(lblBar),
Ingress: []api.IngressRule{
{
FromEndpoints: []api.EndpointSelector{
api.NewESFromLabels(lblJoe),
},
},
},
},
}
ds.d.l7Proxy.RemoveAllNetworkPolicies()
_, err = ds.d.PolicyAdd(rules, nil)
c.Assert(err, Equals, nil)
// Prepare endpoints
cleanup, err := prepareEndpointDirs()
c.Assert(err, Equals, nil)
defer cleanup()
e := ds.prepareEndpoint(c, qaBarSecLblsCtx, true)
c.Assert(e.Allows(qaBarSecLblsCtx.ID), Equals, false)
c.Assert(e.Allows(qaFooSecLblsCtx.ID), Equals, false)
c.Assert(e.Allows(qaJoeSecLblsCtx.ID), Equals, true)
// Check that both policies have been updated in the xDS cache for the L7
// proxies.
networkPolicies := ds.getXDSNetworkPolicies(c, nil)
c.Assert(networkPolicies, HasLen, 2)
qaBarNetworkPolicy := networkPolicies[QAIPv4Addr.String()]
expectedNetworkPolicy := &cilium.NetworkPolicy{
Name: QAIPv4Addr.String(),
Policy: uint64(qaBarSecLblsCtx.ID),
ConntrackMapName: "global",
IngressPerPortPolicies: []*cilium.PortNetworkPolicy{
{
Port: 0,
Protocol: envoy_api_v2_core.SocketAddress_TCP,
Rules: []*cilium.PortNetworkPolicyRule{
{
RemotePolicies: []uint64{uint64(qaJoeSecLblsCtx.ID)},
},
},
},
{
Port: 80,
Protocol: envoy_api_v2_core.SocketAddress_TCP,
Rules: []*cilium.PortNetworkPolicyRule{
{
RemotePolicies: []uint64{uint64(qaFooSecLblsCtx.ID)},
L7: &PNPAllowGETbar,
},
},
},
},
EgressPerPortPolicies: []*cilium.PortNetworkPolicy{ // Allow-all policy.
{Protocol: envoy_api_v2_core.SocketAddress_TCP},
{Protocol: envoy_api_v2_core.SocketAddress_UDP},
},
}
c.Assert(qaBarNetworkPolicy, checker.Equals, expectedNetworkPolicy)
}
func (ds *DaemonSuite) TestReplacePolicy(c *C) {
lbls := labels.ParseLabelArray("foo", "bar")
rules := api.Rules{
{
Labels: lbls,
EndpointSelector: api.NewESFromLabels(lblBar),
Egress: []api.EgressRule{{ToCIDR: []api.CIDR{"1.1.1.1/32", "2.2.2.0/24"}}},
},
{
Labels: lbls,
EndpointSelector: api.NewESFromLabels(lblBar),
},
}
_, err := ds.d.PolicyAdd(rules, nil)
c.Assert(err, IsNil)
ds.d.policy.Mutex.RLock()
c.Assert(len(ds.d.policy.SearchRLocked(lbls)), Equals, 2)
ds.d.policy.Mutex.RUnlock()
rules[0].Egress = []api.EgressRule{{ToCIDR: []api.CIDR{"1.1.1.1/32", "2.2.2.2/32"}}}
_, err = ds.d.PolicyAdd(rules, &policy.AddOptions{Replace: true})
c.Assert(err, IsNil)
ds.d.policy.Mutex.RLock()
c.Assert(len(ds.d.policy.SearchRLocked(lbls)), Equals, 2)
ds.d.policy.Mutex.RUnlock()
// Updating of prefix lengths may complete *after* PolicyAdd returns. Add a
// wait for prefix lengths to be correct after timeout to ensure that we
// do not assert before the releasing of CIDRs has been performed.
testutils.WaitUntil(func() bool {
_, s4 := ds.d.prefixLengths.ToBPFData()
sort.Ints(s4)
if len(s4) != 2 {
c.Logf("IPv4 Prefix lengths incorrect (expected [0, 32]). This may be because CIDRs were not released on replace. %+v", s4)
return false
}
for i, v := range []int{0, 32} {
if s4[i] != v {
c.Logf("Unexpected IPv4 Prefix length. This may be because CIDRs were not released on replace. %+v", s4)
return false
}
}
return true
}, time.Second*5)
}
func (ds *DaemonSuite) TestRemovePolicy(c *C) {
qaBarLbls := labels.Labels{lblBar.Key: lblBar, lblQA.Key: lblQA}
qaBarSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), qaBarLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), qaBarSecLblsCtx)
rules := api.Rules{
{
EndpointSelector: api.NewESFromLabels(lblBar),
Ingress: []api.IngressRule{
{
FromEndpoints: []api.EndpointSelector{
api.NewESFromLabels(lblJoe),
api.NewESFromLabels(lblPete),
api.NewESFromLabels(lblFoo),
},
},
{
FromEndpoints: []api.EndpointSelector{
api.NewESFromLabels(lblFoo),
},
ToPorts: []api.PortRule{
// Allow Port 80 GET /bar
CNPAllowGETbar,
},
},
},
},
{
EndpointSelector: api.NewESFromLabels(lblQA),
Ingress: []api.IngressRule{
{
FromRequires: []api.EndpointSelector{
api.NewESFromLabels(lblQA),
},
},
},
},
{
EndpointSelector: api.NewESFromLabels(lblProd),
Ingress: []api.IngressRule{
{
FromRequires: []api.EndpointSelector{
api.NewESFromLabels(lblProd),
},
},
},
},
}
ds.d.l7Proxy.RemoveAllNetworkPolicies()
_, err3 := ds.d.PolicyAdd(rules, nil)
c.Assert(err3, Equals, nil)
cleanup, err2 := prepareEndpointDirs()
c.Assert(err2, Equals, nil)
defer cleanup()
// Create the endpoint and generate its policy.
e := ds.prepareEndpoint(c, qaBarSecLblsCtx, true)
// Check that the policy has been updated in the xDS cache for the L7
// proxies.
networkPolicies := ds.getXDSNetworkPolicies(c, nil)
c.Assert(networkPolicies, HasLen, 2)
qaBarNetworkPolicy := networkPolicies[QAIPv4Addr.String()]
c.Assert(qaBarNetworkPolicy, Not(IsNil))
// Delete the endpoint.
e.Delete(ds.d, ds.d.ipam, &dummyManager{}, endpoint.DeleteConfig{})
// Check that the policy has been removed from the xDS cache.
networkPolicies = ds.getXDSNetworkPolicies(c, nil)
c.Assert(networkPolicies, HasLen, 0)
}
type dummyManager struct{}
func (d *dummyManager) AllocateID(id uint16) (uint16, error) {
return uint16(1), nil
}
func (d *dummyManager) RunK8sCiliumEndpointSync(*endpoint.Endpoint, endpoint.EndpointStatusConfiguration) {
}
func (d *dummyManager) UpdateReferences(map[id.PrefixType]string, *endpoint.Endpoint) {
}
func (d *dummyManager) UpdateIDReference(*endpoint.Endpoint) {
}
func (d *dummyManager) RemoveReferences(map[id.PrefixType]string) {
}
func (d *dummyManager) RemoveID(uint16) {
}
func (d *dummyManager) ReleaseID(*endpoint.Endpoint) error {
return nil
}
func (ds *DaemonSuite) TestIncrementalPolicy(c *C) {
qaBarLbls := labels.Labels{lblBar.Key: lblBar, lblQA.Key: lblQA}
qaBarSecLblsCtx, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), qaBarLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), qaBarSecLblsCtx)
rules := api.Rules{
{
EndpointSelector: api.NewESFromLabels(lblBar),
Ingress: []api.IngressRule{
{
FromEndpoints: []api.EndpointSelector{
api.NewESFromLabels(lblJoe),
api.NewESFromLabels(lblPete),
api.NewESFromLabels(lblFoo),
},
},
{
FromEndpoints: []api.EndpointSelector{
api.NewESFromLabels(lblFoo),
},
ToPorts: []api.PortRule{
// Allow Port 80 GET /bar
CNPAllowGETbar,
},
},
},
},
{
EndpointSelector: api.NewESFromLabels(lblQA),
Ingress: []api.IngressRule{
{
FromRequires: []api.EndpointSelector{
api.NewESFromLabels(lblQA),
},
},
},
},
{
EndpointSelector: api.NewESFromLabels(lblProd),
Ingress: []api.IngressRule{
{
FromRequires: []api.EndpointSelector{
api.NewESFromLabels(lblProd),
},
},
},
},
}
ds.d.l7Proxy.RemoveAllNetworkPolicies()
_, err3 := ds.d.PolicyAdd(rules, nil)
c.Assert(err3, Equals, nil)
cleanup, err2 := prepareEndpointDirs()
c.Assert(err2, Equals, nil)
defer cleanup()
// Create the endpoint and generate its policy.
e := ds.prepareEndpoint(c, qaBarSecLblsCtx, true)
// Check that the policy has been updated in the xDS cache for the L7
// proxies.
networkPolicies := ds.getXDSNetworkPolicies(c, nil)
c.Assert(networkPolicies, HasLen, 2)
qaBarNetworkPolicy := networkPolicies[QAIPv4Addr.String()]
c.Assert(qaBarNetworkPolicy, Not(IsNil))
c.Assert(qaBarNetworkPolicy.IngressPerPortPolicies, HasLen, 0)
// Allocate identities needed for this test
qaFooLbls := labels.Labels{lblFoo.Key: lblFoo, lblQA.Key: lblQA}
qaFooID, _, err := ds.d.identityAllocator.AllocateIdentity(context.Background(), qaFooLbls, true)
c.Assert(err, Equals, nil)
defer ds.d.identityAllocator.Release(context.Background(), qaFooID)
// Regenerate endpoint
ds.regenerateEndpoint(c, e)
// Check that the policy has been updated in the xDS cache for the L7
// proxies. The plumbing of the identity when `AllocateIdentity` is performed
// down to the `SelectorCache` is asynchronous, so use waiting with a
// timeout.
err = testutils.WaitUntil(func() bool {
networkPolicies = ds.getXDSNetworkPolicies(c, nil)
if len(networkPolicies) != 2 {
return false
}
qaBarNetworkPolicy = networkPolicies[QAIPv4Addr.String()]
return qaBarNetworkPolicy != nil && len(qaBarNetworkPolicy.IngressPerPortPolicies) == 2
}, time.Second*1)
c.Assert(err, IsNil)
c.Assert(qaBarNetworkPolicy, checker.Equals, &cilium.NetworkPolicy{
Name: QAIPv4Addr.String(),
Policy: uint64(qaBarSecLblsCtx.ID),
ConntrackMapName: "global",
IngressPerPortPolicies: []*cilium.PortNetworkPolicy{
{
Port: 0,
Protocol: envoy_api_v2_core.SocketAddress_TCP,
Rules: []*cilium.PortNetworkPolicyRule{
{
RemotePolicies: []uint64{uint64(qaFooID.ID)},
},
},
},
{
Port: 80,
Protocol: envoy_api_v2_core.SocketAddress_TCP,
Rules: []*cilium.PortNetworkPolicyRule{
{
RemotePolicies: []uint64{uint64(qaFooID.ID)},
L7: &PNPAllowGETbar,
},
},
},
},
EgressPerPortPolicies: []*cilium.PortNetworkPolicy{ // Allow-all policy.
{Protocol: envoy_api_v2_core.SocketAddress_TCP},
{Protocol: envoy_api_v2_core.SocketAddress_UDP},
},
})
// Delete the endpoint.
e.Delete(ds.d, ds.d.ipam, &dummyManager{}, endpoint.DeleteConfig{})
// Check that the policy has been removed from the xDS cache.
networkPolicies = ds.getXDSNetworkPolicies(c, nil)
c.Assert(networkPolicies, HasLen, 0)
}
func (ds *DaemonSuite) Test_addCiliumNetworkPolicyV2(c *C) {
back := option.Config.DisableCNPStatusUpdates
defer func() {
option.Config.DisableCNPStatusUpdates = back
}()
option.Config.DisableCNPStatusUpdates = true
uuid := k8sTypes.UID("13bba160-ddca-13e8-b697-0800273b04ff")
type args struct {
ciliumV2Store cache.Store
cnp *types.SlimCNP
repo *policy.Repository
}
type wanted struct {
err error
repo *policy.Repository
}
tests := []struct {
name string
setupArgs func() args
setupWanted func() wanted
}{
{
name: "simple policy added",
setupArgs: func() args {
return args{
ciliumV2Store: &cache.FakeCustomStore{},
cnp: &types.SlimCNP{
CiliumNetworkPolicy: &v2.CiliumNetworkPolicy{
ObjectMeta: metav1.ObjectMeta{
Name: "db",
Namespace: "production",
UID: uuid,
},
Spec: &api.Rule{
EndpointSelector: api.EndpointSelector{
LabelSelector: &metav1.LabelSelector{
MatchLabels: map[string]string{
"env": "cluster-1",