Consul is a distributed, highly available, and data center aware solution to connect and configure applications across dynamic, distributed infrastructure.
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// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1
package catalogv2
import (
"context"
"fmt"
"net/http"
"strconv"
"testing"
"time"
"github.com/stretchr/testify/require"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
pbauth "github.com/hashicorp/consul/proto-public/pbauth/v2beta1"
"github.com/hashicorp/consul/proto-public/pbresource"
"github.com/hashicorp/consul/sdk/testutil/retry"
"github.com/hashicorp/consul/test-integ/topoutil"
libassert "github.com/hashicorp/consul/test/integration/consul-container/libs/assert"
"github.com/hashicorp/consul/test/integration/consul-container/libs/utils"
"github.com/hashicorp/consul/testing/deployer/sprawl/sprawltest"
"github.com/hashicorp/consul/testing/deployer/topology"
)
type testCase struct {
permissions []*permission
result []*testResult
}
type permission struct {
allow bool
excludeSource bool
includeSourceTenancy bool
excludeSourceTenancy bool
destRules []*destRules
}
type destRules struct {
values *ruleValues
excludes []*ruleValues
}
type ruleValues struct {
portNames []string
path string
pathPref string
pathReg string
headers []string
methods []string
}
type testResult struct {
fail bool
port string
path string
headers map[string]string
}
func newTrafficPermissions(p *permission, srcTenancy *pbresource.Tenancy) *pbauth.TrafficPermissions {
sources := []*pbauth.Source{{
IdentityName: "static-client",
Namespace: srcTenancy.Namespace,
Partition: srcTenancy.Partition,
}}
destinationRules := []*pbauth.DestinationRule{}
if p != nil {
srcId := "static-client"
if p.includeSourceTenancy {
srcId = ""
}
if p.excludeSource {
sources = []*pbauth.Source{{
IdentityName: srcId,
Namespace: srcTenancy.Namespace,
Partition: srcTenancy.Partition,
Exclude: []*pbauth.ExcludeSource{{
IdentityName: "static-client",
Namespace: srcTenancy.Namespace,
Partition: srcTenancy.Partition,
}},
}}
} else {
sources = []*pbauth.Source{{
IdentityName: srcId,
Namespace: srcTenancy.Namespace,
Partition: srcTenancy.Partition,
}}
}
for _, dr := range p.destRules {
destRule := &pbauth.DestinationRule{}
if dr.values != nil {
destRule.PathExact = dr.values.path
destRule.PathPrefix = dr.values.pathPref
destRule.PathRegex = dr.values.pathReg
destRule.Methods = dr.values.methods
destRule.PortNames = dr.values.portNames
destRule.Headers = []*pbauth.DestinationRuleHeader{}
for _, h := range dr.values.headers {
destRule.Headers = append(destRule.Headers, &pbauth.DestinationRuleHeader{
Name: h,
Present: true,
})
}
}
var excludePermissions []*pbauth.ExcludePermissionRule
for _, e := range dr.excludes {
eRule := &pbauth.ExcludePermissionRule{
PathExact: e.path,
PathPrefix: e.pathPref,
PathRegex: e.pathReg,
Methods: e.methods,
PortNames: e.portNames,
}
eRule.Headers = []*pbauth.DestinationRuleHeader{}
for _, h := range e.headers {
eRule.Headers = append(eRule.Headers, &pbauth.DestinationRuleHeader{
Name: h,
Present: true,
})
}
excludePermissions = append(excludePermissions, eRule)
}
destRule.Exclude = excludePermissions
destinationRules = append(destinationRules, destRule)
}
}
action := pbauth.Action_ACTION_ALLOW
if !p.allow {
action = pbauth.Action_ACTION_DENY
}
return &pbauth.TrafficPermissions{
Destination: &pbauth.Destination{
IdentityName: "static-server",
},
Action: action,
Permissions: []*pbauth.Permission{{
Sources: sources,
DestinationRules: destinationRules,
}},
}
}
// This tests runs a gauntlet of traffic permissions updates and validates that the request status codes match the intended rules
func TestL7TrafficPermissions(t *testing.T) {
testcases := map[string]testCase{
// L4 permissions
"basic": {permissions: []*permission{{allow: true}}, result: []*testResult{{fail: false}}},
"client-exclude": {permissions: []*permission{{allow: true, includeSourceTenancy: true, excludeSource: true}}, result: []*testResult{{fail: true}}},
"allow-all-client-in-tenancy": {permissions: []*permission{{allow: true, includeSourceTenancy: true}}, result: []*testResult{{fail: false}}},
"only-one-port": {permissions: []*permission{{allow: true, destRules: []*destRules{{values: &ruleValues{portNames: []string{"http"}}}}}}, result: []*testResult{{fail: true, port: "http2"}}},
"exclude-port": {permissions: []*permission{{allow: true, destRules: []*destRules{{excludes: []*ruleValues{{portNames: []string{"http"}}}}}}}, result: []*testResult{{fail: true, port: "http"}}},
// L7 permissions
"methods": {permissions: []*permission{{allow: true, destRules: []*destRules{{values: &ruleValues{methods: []string{"POST", "PUT", "PATCH", "DELETE", "CONNECT", "HEAD", "OPTIONS", "TRACE"}, pathPref: "/"}}}}},
// fortio fetch2 is configured to GET
result: []*testResult{{fail: true}}},
"headers": {permissions: []*permission{{allow: true, destRules: []*destRules{{values: &ruleValues{headers: []string{"a", "b"}, pathPref: "/"}}}}},
result: []*testResult{{fail: true}, {fail: true, headers: map[string]string{"a": "1"}}, {fail: false, headers: map[string]string{"a": "1", "b": "2"}}}},
"path-prefix-all": {permissions: []*permission{{allow: true, destRules: []*destRules{{values: &ruleValues{pathPref: "/", methods: []string{"GET"}}}}}}, result: []*testResult{{fail: false}}},
"method-exclude": {permissions: []*permission{{allow: true, destRules: []*destRules{{values: &ruleValues{pathPref: "/"}, excludes: []*ruleValues{{methods: []string{"GET"}}}}}}},
// fortio fetch2 is configured to GET
result: []*testResult{{fail: true}}},
"exclude-paths-and-headers": {permissions: []*permission{{allow: true, destRules: []*destRules{
{
values: &ruleValues{pathPref: "/f", headers: []string{"a"}},
excludes: []*ruleValues{{headers: []string{"b"}, path: "/foobar"}},
}}}},
result: []*testResult{
{fail: false, path: "foobar", headers: map[string]string{"a": "1"}},
{fail: false, path: "foo", headers: map[string]string{"a": "1", "b": "2"}},
{fail: true, path: "foobar", headers: map[string]string{"a": "1", "b": "2"}},
{fail: false, path: "foo", headers: map[string]string{"a": "1"}},
{fail: true, path: "foo", headers: map[string]string{"b": "2"}},
{fail: true, path: "baz", headers: map[string]string{"a": "1"}},
}},
"exclude-paths-or-headers": {permissions: []*permission{{allow: true, destRules: []*destRules{
{values: &ruleValues{pathPref: "/f", headers: []string{"a"}}, excludes: []*ruleValues{{headers: []string{"b"}}, {path: "/foobar"}}}}}},
result: []*testResult{
{fail: true, path: "foobar", headers: map[string]string{"a": "1"}},
{fail: true, path: "foo", headers: map[string]string{"a": "1", "b": "2"}},
{fail: true, path: "foobar", headers: map[string]string{"a": "1", "b": "2"}},
{fail: false, path: "foo", headers: map[string]string{"a": "1"}},
{fail: false, path: "foo", headers: map[string]string{"a": "1"}},
{fail: true, path: "baz", port: "http", headers: map[string]string{"a": "1"}},
}},
"path-or-header": {permissions: []*permission{{allow: true, destRules: []*destRules{{values: &ruleValues{pathPref: "/bar"}}, {values: &ruleValues{headers: []string{"b"}}}}}},
result: []*testResult{
{fail: false, path: "bar"},
{fail: false, path: "foo", headers: map[string]string{"a": "1", "b": "2"}},
{fail: false, path: "bar", headers: map[string]string{"b": "2"}},
{fail: true, path: "foo", headers: map[string]string{"a": "1"}},
}},
"path-and-header": {permissions: []*permission{{allow: true, destRules: []*destRules{{values: &ruleValues{pathPref: "/bar", headers: []string{"b"}}}}}},
result: []*testResult{
{fail: true, path: "bar"},
{fail: true, path: "foo", headers: map[string]string{"a": "1", "b": "2"}},
{fail: false, path: "bar", headers: map[string]string{"b": "2"}},
{fail: true, path: "foo", headers: map[string]string{"a": "1"}},
}},
"path-regex-exclude": {permissions: []*permission{{allow: true, destRules: []*destRules{{values: &ruleValues{pathPref: "/"}, excludes: []*ruleValues{{pathReg: ".*dns.*"}}}}}},
result: []*testResult{{fail: true, path: "fortio/rest/dns"}, {fail: false, path: "fortio/rest/status"}}},
"header-include-exclude-by-port": {permissions: []*permission{{allow: true, destRules: []*destRules{{values: &ruleValues{pathPref: "/", headers: []string{"experiment1", "experiment2"}}, excludes: []*ruleValues{{portNames: []string{"http2"}, headers: []string{"experiment1"}}}}}}},
result: []*testResult{{fail: true, port: "http2", headers: map[string]string{"experiment1": "a", "experiment2": "b"}},
{fail: false, port: "http", headers: map[string]string{"experiment1": "a", "experiment2": "b"}},
{fail: true, port: "http2", headers: map[string]string{"experiment2": "b"}},
{fail: true, port: "http", headers: map[string]string{"experiment3": "c"}},
}},
"two-tp-or": {permissions: []*permission{{allow: true, destRules: []*destRules{{values: &ruleValues{pathPref: "/bar"}}}}, {allow: true, destRules: []*destRules{{values: &ruleValues{headers: []string{"b"}}}}}},
result: []*testResult{
{fail: false, path: "bar"},
{fail: false, path: "foo", headers: map[string]string{"a": "1", "b": "2"}},
{fail: false, path: "bar", headers: map[string]string{"b": "2"}},
{fail: true, path: "foo", headers: map[string]string{"a": "1"}},
}},
}
if utils.IsEnterprise() {
// DENY and ALLOW permissions
testcases["deny-cancel-allow"] = testCase{permissions: []*permission{{allow: true}, {allow: false}}, result: []*testResult{{fail: true}}}
testcases["l4-deny-l7-allow"] = testCase{permissions: []*permission{{allow: false}, {allow: true, destRules: []*destRules{{values: &ruleValues{pathPref: "/"}}}}}, result: []*testResult{{fail: true}, {fail: true, path: "test"}}}
testcases["l7-deny-l4-allow"] = testCase{permissions: []*permission{{allow: true}, {allow: true, destRules: []*destRules{{values: &ruleValues{pathPref: "/"}}}}, {allow: false, destRules: []*destRules{{values: &ruleValues{pathPref: "/foo"}}}}},
result: []*testResult{{fail: false}, {fail: false, path: "test"}, {fail: true, path: "foo-bar"}}}
}
tenancies := []*pbresource.Tenancy{
{
Partition: "default",
Namespace: "default",
},
}
if utils.IsEnterprise() {
tenancies = append(tenancies, &pbresource.Tenancy{
Partition: "ap1",
Namespace: "ns1",
})
}
cfg := testL7TrafficPermissionsCreator{tenancies}.NewConfig(t)
targetImage := utils.TargetImages()
imageName := targetImage.Consul
if utils.IsEnterprise() {
imageName = targetImage.ConsulEnterprise
}
t.Log("running with target image: " + imageName)
sp := sprawltest.Launch(t, cfg)
asserter := topoutil.NewAsserter(sp)
topo := sp.Topology()
cluster := topo.Clusters["dc1"]
ships := topo.ComputeRelationships()
clientV2 := sp.ResourceServiceClientForCluster(cluster.Name)
// Make sure services exist
for _, tenancy := range tenancies {
for _, name := range []string{
"static-server",
"static-client",
} {
libassert.CatalogV2ServiceHasEndpointCount(t, clientV2, name, tenancy, len(tenancies))
}
}
var initialTrafficPerms []*pbresource.Resource
for testName, tc := range testcases {
// Delete old TP and write new one for a new test case
mustDeleteTestResources(t, clientV2, initialTrafficPerms)
initialTrafficPerms = []*pbresource.Resource{}
for _, st := range tenancies {
for _, dt := range tenancies {
for i, p := range tc.permissions {
newTrafficPerms := sprawltest.MustSetResourceData(t, &pbresource.Resource{
Id: &pbresource.ID{
Type: pbauth.TrafficPermissionsType,
Name: "static-server-perms" + strconv.Itoa(i) + "-" + st.Namespace + "-" + st.Partition,
Tenancy: dt,
},
}, newTrafficPermissions(p, st))
mustWriteTestResource(t, clientV2, newTrafficPerms)
initialTrafficPerms = append(initialTrafficPerms, newTrafficPerms)
}
}
}
t.Log(initialTrafficPerms)
// Wait for the resource updates to go through and Envoy to be ready
time.Sleep(1 * time.Second)
// Check the default server workload envoy config for RBAC filters matching testcase criteria
serverWorkload := cluster.WorkloadsByID(topology.ID{
Partition: "default",
Namespace: "default",
Name: "static-server",
})
asserter.AssertEnvoyHTTPrbacFiltersContainIntentions(t, serverWorkload[0])
// Check relationships
for _, ship := range ships {
t.Run("case: "+testName+":"+ship.Destination.PortName+":("+ship.Caller.ID.Partition+"/"+ship.Caller.ID.Namespace+
")("+ship.Destination.ID.Partition+"/"+ship.Destination.ID.Namespace+")", func(t *testing.T) {
var (
wrk = ship.Caller
dest = ship.Destination
)
for _, res := range tc.result {
if res.port != "" && res.port != ship.Destination.PortName {
continue
}
dest.ID.Name = "static-server"
destClusterPrefix := clusterPrefix(dest.PortName, dest.ID, dest.Cluster)
asserter.DestinationEndpointStatus(t, wrk, destClusterPrefix+".", "HEALTHY", len(tenancies))
status := http.StatusForbidden
if res.fail == false {
status = http.StatusOK
}
t.Log("Test request:"+res.path, res.headers, status)
asserter.FortioFetch2ServiceStatusCodes(t, wrk, dest, res.path, res.headers, []int{status})
}
})
}
}
}
func mustWriteTestResource(t *testing.T, client pbresource.ResourceServiceClient, res *pbresource.Resource) {
retryer := &retry.Timer{Timeout: time.Minute, Wait: time.Second}
rsp, err := client.Write(context.Background(), &pbresource.WriteRequest{Resource: res})
require.NoError(t, err)
retry.RunWith(retryer, t, func(r *retry.R) {
readRsp, err := client.Read(context.Background(), &pbresource.ReadRequest{Id: rsp.Resource.Id})
require.NoError(r, err, "error reading %s", rsp.Resource.Id.Name)
require.NotNil(r, readRsp)
})
}
func mustDeleteTestResources(t *testing.T, client pbresource.ResourceServiceClient, resources []*pbresource.Resource) {
if len(resources) == 0 {
return
}
retryer := &retry.Timer{Timeout: time.Minute, Wait: time.Second}
for _, res := range resources {
retry.RunWith(retryer, t, func(r *retry.R) {
_, err := client.Delete(context.Background(), &pbresource.DeleteRequest{Id: res.Id})
if status.Code(err) == codes.NotFound {
return
}
if err != nil && status.Code(err) != codes.Aborted {
r.Stop(fmt.Errorf("failed to delete the resource: %w", err))
return
}
require.NoError(r, err)
})
}
}
type testL7TrafficPermissionsCreator struct {
tenancies []*pbresource.Tenancy
}
func (c testL7TrafficPermissionsCreator) NewConfig(t *testing.T) *topology.Config {
const clusterName = "dc1"
servers := topoutil.NewTopologyServerSet(clusterName+"-server", 1, []string{clusterName, "wan"}, nil)
cluster := &topology.Cluster{
Enterprise: utils.IsEnterprise(),
Name: clusterName,
Nodes: servers,
}
lastNode := 0
nodeName := func() string {
lastNode++
return fmt.Sprintf("%s-box%d", clusterName, lastNode)
}
for _, st := range c.tenancies {
for _, dt := range c.tenancies {
c.topologyConfigAddNodes(cluster, nodeName, st, dt)
}
}
return &topology.Config{
Images: utils.TargetImages(),
Networks: []*topology.Network{
{Name: clusterName},
{Name: "wan", Type: "wan"},
},
Clusters: []*topology.Cluster{
cluster,
},
}
}
func (c testL7TrafficPermissionsCreator) topologyConfigAddNodes(
cluster *topology.Cluster,
nodeName func() string,
sourceTenancy *pbresource.Tenancy,
destinationTenancy *pbresource.Tenancy,
) {
clusterName := cluster.Name
newID := func(name string, tenancy *pbresource.Tenancy) topology.ID {
return topology.ID{
Partition: tenancy.Partition,
Namespace: tenancy.Namespace,
Name: name,
}
}
serverNode := &topology.Node{
Kind: topology.NodeKindDataplane,
Version: topology.NodeVersionV2,
Partition: destinationTenancy.Partition,
Name: nodeName(),
Workloads: []*topology.Workload{
topoutil.NewFortioWorkloadWithDefaults(
clusterName,
newID("static-server", destinationTenancy),
topology.NodeVersionV2,
nil,
),
},
}
clientNode := &topology.Node{
Kind: topology.NodeKindDataplane,
Version: topology.NodeVersionV2,
Partition: sourceTenancy.Partition,
Name: nodeName(),
Workloads: []*topology.Workload{
topoutil.NewFortioWorkloadWithDefaults(
clusterName,
newID("static-client", sourceTenancy),
topology.NodeVersionV2,
func(wrk *topology.Workload) {
wrk.Destinations = append(wrk.Destinations, &topology.Destination{
ID: newID("static-server", destinationTenancy),
PortName: "http",
LocalAddress: "0.0.0.0", // needed for an assertion
LocalPort: 5000,
},
&topology.Destination{
ID: newID("static-server", destinationTenancy),
PortName: "http2",
LocalAddress: "0.0.0.0", // needed for an assertion
LocalPort: 5001,
},
)
wrk.WorkloadIdentity = "static-client"
},
),
},
}
cluster.Nodes = append(cluster.Nodes,
clientNode,
serverNode,
)
}