844 lines
25 KiB
Go
844 lines
25 KiB
Go
package xds
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import (
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"context"
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"errors"
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"strings"
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"sync"
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"sync/atomic"
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"testing"
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"time"
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envoy "github.com/envoyproxy/go-control-plane/envoy/api/v2"
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"github.com/stretchr/testify/require"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/metadata"
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"google.golang.org/grpc/status"
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"github.com/hashicorp/consul/acl"
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"github.com/hashicorp/consul/agent/cache"
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"github.com/hashicorp/consul/agent/proxycfg"
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"github.com/hashicorp/consul/agent/structs"
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"github.com/hashicorp/consul/sdk/testutil"
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)
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// testManager is a mock of proxycfg.Manager that's simpler to control for
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// testing. It also implements ConnectAuthz to allow control over authorization.
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type testManager struct {
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sync.Mutex
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chans map[structs.ServiceID]chan *proxycfg.ConfigSnapshot
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cancels chan structs.ServiceID
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authz map[string]connectAuthzResult
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}
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type connectAuthzResult struct {
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authz bool
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reason string
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m *cache.ResultMeta
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err error
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validate func(req *structs.ConnectAuthorizeRequest) error
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}
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func newTestManager(t *testing.T) *testManager {
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return &testManager{
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chans: map[structs.ServiceID]chan *proxycfg.ConfigSnapshot{},
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cancels: make(chan structs.ServiceID, 10),
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authz: make(map[string]connectAuthzResult),
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}
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}
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// RegisterProxy simulates a proxy registration
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func (m *testManager) RegisterProxy(t *testing.T, proxyID structs.ServiceID) {
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m.Lock()
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defer m.Unlock()
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m.chans[proxyID] = make(chan *proxycfg.ConfigSnapshot, 1)
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}
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// Deliver simulates a proxy registration
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func (m *testManager) DeliverConfig(t *testing.T, proxyID structs.ServiceID, cfg *proxycfg.ConfigSnapshot) {
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t.Helper()
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m.Lock()
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defer m.Unlock()
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select {
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case m.chans[proxyID] <- cfg:
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case <-time.After(10 * time.Millisecond):
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t.Fatalf("took too long to deliver config")
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}
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}
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// Watch implements ConfigManager
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func (m *testManager) Watch(proxyID structs.ServiceID) (<-chan *proxycfg.ConfigSnapshot, proxycfg.CancelFunc) {
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m.Lock()
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defer m.Unlock()
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// ch might be nil but then it will just block forever
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return m.chans[proxyID], func() {
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m.cancels <- proxyID
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}
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}
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// AssertWatchCancelled checks that the most recent call to a Watch cancel func
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// was from the specified proxyID and that one is made in a short time. This
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// probably won't work if you are running multiple Watches in parallel on
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// multiple proxyIDS due to timing/ordering issues but I don't think we need to
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// do that.
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func (m *testManager) AssertWatchCancelled(t *testing.T, proxyID structs.ServiceID) {
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t.Helper()
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select {
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case got := <-m.cancels:
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require.Equal(t, proxyID, got)
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case <-time.After(50 * time.Millisecond):
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t.Fatalf("timed out waiting for Watch cancel for %s", proxyID)
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}
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}
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// ConnectAuthorize implements ConnectAuthz
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func (m *testManager) ConnectAuthorize(token string, req *structs.ConnectAuthorizeRequest) (authz bool, reason string, meta *cache.ResultMeta, err error) {
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m.Lock()
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defer m.Unlock()
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if res, ok := m.authz[token]; ok {
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if res.validate != nil {
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if err := res.validate(req); err != nil {
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return false, "", nil, err
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}
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}
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return res.authz, res.reason, res.m, res.err
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}
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// Default allow but with reason that won't match by accident in a test case
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return true, "OK: allowed by default test implementation", nil, nil
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}
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func TestServer_StreamAggregatedResources_BasicProtocol(t *testing.T) {
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logger := testutil.Logger(t)
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mgr := newTestManager(t)
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aclResolve := func(id string) (acl.Authorizer, error) {
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// Allow all
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return acl.RootAuthorizer("manage"), nil
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}
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envoy := NewTestEnvoy(t, "web-sidecar-proxy", "")
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defer envoy.Close()
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s := Server{
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Logger: logger,
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CfgMgr: mgr,
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Authz: mgr,
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ResolveToken: aclResolve,
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}
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s.Initialize()
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sid := structs.NewServiceID("web-sidecar-proxy", nil)
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go func() {
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err := s.StreamAggregatedResources(envoy.stream)
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require.NoError(t, err)
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}()
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// Register the proxy to create state needed to Watch() on
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mgr.RegisterProxy(t, sid)
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// Send initial cluster discover
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envoy.SendReq(t, ClusterType, 0, 0)
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// Check no response sent yet
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assertChanBlocked(t, envoy.stream.sendCh)
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// Deliver a new snapshot
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snap := proxycfg.TestConfigSnapshot(t)
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mgr.DeliverConfig(t, sid, snap)
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assertResponseSent(t, envoy.stream.sendCh, expectClustersJSON(t, snap, "", 1, 1))
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// Envoy then tries to discover endpoints for those clusters. Technically it
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// includes the cluster names in the ResourceNames field but we ignore that
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// completely for now so not bothering to simulate that.
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envoy.SendReq(t, EndpointType, 0, 0)
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// It also (in parallel) issues the next cluster request (which acts as an ACK
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// of the version we sent)
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envoy.SendReq(t, ClusterType, 1, 1)
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// We should get a response immediately since the config is already present in
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// the server for endpoints. Note that this should not be racy if the server
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// is behaving well since the Cluster send above should be blocked until we
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// deliver a new config version.
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assertResponseSent(t, envoy.stream.sendCh, expectEndpointsJSON(t, snap, "", 1, 2))
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// And no other response yet
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assertChanBlocked(t, envoy.stream.sendCh)
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// Envoy now sends listener request along with next endpoint one
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envoy.SendReq(t, ListenerType, 0, 0)
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envoy.SendReq(t, EndpointType, 1, 2)
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// And should get a response immediately.
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assertResponseSent(t, envoy.stream.sendCh, expectListenerJSON(t, snap, "", 1, 3))
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// Now send Route request along with next listener one
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envoy.SendReq(t, RouteType, 0, 0)
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envoy.SendReq(t, ListenerType, 1, 3)
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// We don't serve routes yet so this should block with no response
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assertChanBlocked(t, envoy.stream.sendCh)
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// WOOP! Envoy now has full connect config. Lets verify that if we update it,
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// all the responses get resent with the new version. We don't actually want
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// to change everything because that's tedious - our implementation will
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// actually resend all blocked types on the new "version" anyway since it
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// doesn't know _what_ changed. We could do something trivial but let's
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// simulate a leaf cert expiring and being rotated.
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snap.ConnectProxy.Leaf = proxycfg.TestLeafForCA(t, snap.Roots.Roots[0])
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mgr.DeliverConfig(t, sid, snap)
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// All 3 response that have something to return should return with new version
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// note that the ordering is not deterministic in general. Trying to make this
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// test order-agnostic though is a massive pain since we are comparing
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// non-identical JSON strings (so can simply sort by anything) and because we
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// don't know the order the nonces will be assigned. For now we rely and
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// require our implementation to always deliver updates in a specific order
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// which is reasonable anyway to ensure consistency of the config Envoy sees.
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assertResponseSent(t, envoy.stream.sendCh, expectClustersJSON(t, snap, "", 2, 4))
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assertResponseSent(t, envoy.stream.sendCh, expectEndpointsJSON(t, snap, "", 2, 5))
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assertResponseSent(t, envoy.stream.sendCh, expectListenerJSON(t, snap, "", 2, 6))
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// Let's pretend that Envoy doesn't like that new listener config. It will ACK
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// all the others (same version) but NACK the listener. This is the most
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// subtle part of xDS and the server implementation so I'll elaborate. A full
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// description of the protocol can be found at
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// https://www.envoyproxy.io/docs/envoy/latest/api-docs/xds_protocol
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// Envoy delays making a followup request for a type until after it has
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// processed and applied the last response. The next request then will include
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// the nonce in the last response which acknowledges _receiving_ and handling
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// that response. It also includes the currently applied version. If all is
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// good and it successfully applies the config, then the version in the next
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// response will be the same version just sent. This is considered to be an
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// ACK of that version for that type. If envoy fails to apply the config for
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// some reason, it will still acknowledge that it received it (still return
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// the responses nonce), but will show the previous version it's still using.
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// This is considered a NACK. It's important that the server pay attention to
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// the _nonce_ and not the version when deciding what to send otherwise a bad
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// version that can't be applied in Envoy will cause a busy loop.
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//
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// In this case we are simulating that Envoy failed to apply the Listener
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// response but did apply the other types so all get the new nonces, but
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// listener stays on v1.
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envoy.SendReq(t, ClusterType, 2, 4)
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envoy.SendReq(t, EndpointType, 2, 5)
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envoy.SendReq(t, ListenerType, 1, 6) // v1 is a NACK
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// Even though we nacked, we should still NOT get then v2 listeners
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// redelivered since nothing has changed.
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assertChanBlocked(t, envoy.stream.sendCh)
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// Change config again and make sure it's delivered to everyone!
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snap.ConnectProxy.Leaf = proxycfg.TestLeafForCA(t, snap.Roots.Roots[0])
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mgr.DeliverConfig(t, sid, snap)
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assertResponseSent(t, envoy.stream.sendCh, expectClustersJSON(t, snap, "", 3, 7))
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assertResponseSent(t, envoy.stream.sendCh, expectEndpointsJSON(t, snap, "", 3, 8))
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assertResponseSent(t, envoy.stream.sendCh, expectListenerJSON(t, snap, "", 3, 9))
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}
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func expectEndpointsJSON(t *testing.T, snap *proxycfg.ConfigSnapshot, token string, v, n uint64) string {
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return `{
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"versionInfo": "` + hexString(v) + `",
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"resources": [
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{
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"@type": "type.googleapis.com/envoy.api.v2.ClusterLoadAssignment",
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"clusterName": "db.default.dc1.internal.11111111-2222-3333-4444-555555555555.consul",
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"endpoints": [
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{
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"lbEndpoints": [
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{
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"endpoint": {
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"address": {
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"socketAddress": {
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"address": "10.10.1.1",
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"portValue": 8080
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}
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}
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},
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"healthStatus": "HEALTHY",
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"loadBalancingWeight": 1
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},
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{
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"endpoint": {
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"address": {
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"socketAddress": {
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"address": "10.10.1.2",
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"portValue": 8080
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}
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}
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},
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"healthStatus": "HEALTHY",
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"loadBalancingWeight": 1
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}
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]
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}
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]
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},
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{
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"@type": "type.googleapis.com/envoy.api.v2.ClusterLoadAssignment",
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"clusterName": "geo-cache.default.dc1.query.11111111-2222-3333-4444-555555555555.consul",
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"endpoints": [
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{
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"lbEndpoints": [
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{
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"endpoint": {
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"address": {
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"socketAddress": {
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"address": "10.10.1.1",
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"portValue": 8080
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}
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}
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},
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"healthStatus": "HEALTHY",
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"loadBalancingWeight": 1
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},
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{
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"endpoint": {
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"address": {
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"socketAddress": {
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"address": "10.10.1.2",
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"portValue": 8080
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}
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}
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},
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"healthStatus": "HEALTHY",
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"loadBalancingWeight": 1
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}
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]
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}
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]
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}
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],
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"typeUrl": "type.googleapis.com/envoy.api.v2.ClusterLoadAssignment",
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"nonce": "` + hexString(n) + `"
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}`
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}
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func expectedUpstreamTLSContextJSON(t *testing.T, snap *proxycfg.ConfigSnapshot, sni string) string {
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return expectedTLSContextJSON(t, snap, false, sni)
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}
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func expectedPublicTLSContextJSON(t *testing.T, snap *proxycfg.ConfigSnapshot) string {
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return expectedTLSContextJSON(t, snap, true, "")
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}
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func expectedTLSContextJSON(t *testing.T, snap *proxycfg.ConfigSnapshot, requireClientCert bool, sni string) string {
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// Assume just one root for now, can get fancier later if needed.
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caPEM := snap.Roots.Roots[0].RootCert
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reqClient := ""
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if requireClientCert {
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reqClient = `,
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"requireClientCertificate": true`
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}
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upstreamSNI := ""
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if sni != "" {
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upstreamSNI = `,
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"sni": "` + sni + `"`
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}
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return `{
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"commonTlsContext": {
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"tlsParams": {},
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"tlsCertificates": [
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{
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"certificateChain": {
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"inlineString": "` + strings.Replace(snap.ConnectProxy.Leaf.CertPEM, "\n", "\\n", -1) + `"
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},
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"privateKey": {
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"inlineString": "` + strings.Replace(snap.ConnectProxy.Leaf.PrivateKeyPEM, "\n", "\\n", -1) + `"
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}
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}
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],
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"validationContext": {
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"trustedCa": {
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"inlineString": "` + strings.Replace(caPEM, "\n", "\\n", -1) + `"
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}
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}
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}
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` + reqClient + `
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` + upstreamSNI + `
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}`
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}
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func assertChanBlocked(t *testing.T, ch chan *envoy.DiscoveryResponse) {
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t.Helper()
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select {
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case r := <-ch:
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t.Fatalf("chan should block but received: %v", r)
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case <-time.After(10 * time.Millisecond):
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return
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}
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}
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func assertResponseSent(t *testing.T, ch chan *envoy.DiscoveryResponse, wantJSON string) {
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t.Helper()
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select {
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case r := <-ch:
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assertResponse(t, r, wantJSON)
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case <-time.After(50 * time.Millisecond):
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t.Fatalf("no response received after 50ms")
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}
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}
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// assertResponse is a helper to test a envoy.DiscoveryResponse matches the
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// JSON representation we expect. We use JSON because the responses use protobuf
|
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// Any type which includes binary protobuf encoding and would make creating
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// expected structs require the same code that is under test!
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func assertResponse(t *testing.T, r *envoy.DiscoveryResponse, wantJSON string) {
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t.Helper()
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gotJSON := responseToJSON(t, r)
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require.JSONEqf(t, wantJSON, gotJSON, "got:\n%s", gotJSON)
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}
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|
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func TestServer_StreamAggregatedResources_ACLEnforcement(t *testing.T) {
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tests := []struct {
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name string
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defaultDeny bool
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acl string
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token string
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wantDenied bool
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}{
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// Note that although we've stubbed actual ACL checks in the testManager
|
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// ConnectAuthorize mock, by asserting against specific reason strings here
|
|
// even in the happy case which can't match the default one returned by the
|
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// mock we are implicitly validating that the implementation used the
|
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// correct token from the context.
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{
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name: "no ACLs configured",
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defaultDeny: false,
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wantDenied: false,
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},
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{
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name: "default deny, no token",
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defaultDeny: true,
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wantDenied: true,
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},
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{
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name: "default deny, write token",
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defaultDeny: true,
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acl: `service "web" { policy = "write" }`,
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token: "service-write-on-web",
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wantDenied: false,
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},
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{
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name: "default deny, read token",
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defaultDeny: true,
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acl: `service "web" { policy = "read" }`,
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token: "service-write-on-web",
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wantDenied: true,
|
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},
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{
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name: "default deny, write token on different service",
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defaultDeny: true,
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acl: `service "not-web" { policy = "write" }`,
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token: "service-write-on-not-web",
|
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wantDenied: true,
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},
|
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}
|
|
|
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for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
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logger := testutil.Logger(t)
|
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mgr := newTestManager(t)
|
|
aclResolve := func(id string) (acl.Authorizer, error) {
|
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if !tt.defaultDeny {
|
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// Allow all
|
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return acl.RootAuthorizer("allow"), nil
|
|
}
|
|
if tt.acl == "" {
|
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// No token and defaultDeny is denied
|
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return acl.RootAuthorizer("deny"), nil
|
|
}
|
|
// Ensure the correct token was passed
|
|
require.Equal(t, tt.token, id)
|
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// Parse the ACL and enforce it
|
|
policy, err := acl.NewPolicyFromSource("", 0, tt.acl, acl.SyntaxLegacy, nil, nil)
|
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require.NoError(t, err)
|
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return acl.NewPolicyAuthorizerWithDefaults(acl.RootAuthorizer("deny"), []*acl.Policy{policy}, nil)
|
|
}
|
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envoy := NewTestEnvoy(t, "web-sidecar-proxy", tt.token)
|
|
defer envoy.Close()
|
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|
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s := Server{
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Logger: logger,
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CfgMgr: mgr,
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Authz: mgr,
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ResolveToken: aclResolve,
|
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}
|
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s.Initialize()
|
|
|
|
errCh := make(chan error, 1)
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|
go func() {
|
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errCh <- s.StreamAggregatedResources(envoy.stream)
|
|
}()
|
|
|
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sid := structs.NewServiceID("web-sidecar-proxy", nil)
|
|
// Register the proxy to create state needed to Watch() on
|
|
mgr.RegisterProxy(t, sid)
|
|
|
|
// Deliver a new snapshot
|
|
snap := proxycfg.TestConfigSnapshot(t)
|
|
mgr.DeliverConfig(t, sid, snap)
|
|
|
|
// Send initial listener discover, in real life Envoy always sends cluster
|
|
// first but it doesn't really matter and listener has a response that
|
|
// includes the token in the ext authz filter so lets us test more stuff.
|
|
envoy.SendReq(t, ListenerType, 0, 0)
|
|
|
|
if !tt.wantDenied {
|
|
assertResponseSent(t, envoy.stream.sendCh, expectListenerJSON(t, snap, tt.token, 1, 1))
|
|
// Close the client stream since all is well. We _don't_ do this in the
|
|
// expected error case because we want to verify the error closes the
|
|
// stream from server side.
|
|
envoy.Close()
|
|
}
|
|
|
|
select {
|
|
case err := <-errCh:
|
|
if tt.wantDenied {
|
|
require.Error(t, err)
|
|
require.Contains(t, err.Error(), "permission denied")
|
|
mgr.AssertWatchCancelled(t, sid)
|
|
} else {
|
|
require.NoError(t, err)
|
|
}
|
|
case <-time.After(50 * time.Millisecond):
|
|
t.Fatalf("timed out waiting for handler to finish")
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestServer_StreamAggregatedResources_ACLTokenDeleted_StreamTerminatedDuringDiscoveryRequest(t *testing.T) {
|
|
aclRules := `service "web" { policy = "write" }`
|
|
token := "service-write-on-web"
|
|
|
|
policy, err := acl.NewPolicyFromSource("", 0, aclRules, acl.SyntaxLegacy, nil, nil)
|
|
require.NoError(t, err)
|
|
|
|
var validToken atomic.Value
|
|
validToken.Store(token)
|
|
|
|
logger := testutil.Logger(t)
|
|
mgr := newTestManager(t)
|
|
aclResolve := func(id string) (acl.Authorizer, error) {
|
|
if token := validToken.Load(); token == nil || id != token.(string) {
|
|
return nil, acl.ErrNotFound
|
|
}
|
|
|
|
return acl.NewPolicyAuthorizerWithDefaults(acl.RootAuthorizer("deny"), []*acl.Policy{policy}, nil)
|
|
}
|
|
envoy := NewTestEnvoy(t, "web-sidecar-proxy", token)
|
|
defer envoy.Close()
|
|
|
|
s := Server{
|
|
Logger: logger,
|
|
CfgMgr: mgr,
|
|
Authz: mgr,
|
|
ResolveToken: aclResolve,
|
|
AuthCheckFrequency: 1 * time.Hour, // make sure this doesn't kick in
|
|
}
|
|
s.Initialize()
|
|
|
|
errCh := make(chan error, 1)
|
|
go func() {
|
|
errCh <- s.StreamAggregatedResources(envoy.stream)
|
|
}()
|
|
|
|
getError := func() (gotErr error, ok bool) {
|
|
select {
|
|
case err := <-errCh:
|
|
return err, true
|
|
default:
|
|
return nil, false
|
|
}
|
|
}
|
|
|
|
sid := structs.NewServiceID("web-sidecar-proxy", nil)
|
|
// Register the proxy to create state needed to Watch() on
|
|
mgr.RegisterProxy(t, sid)
|
|
|
|
// Send initial cluster discover (OK)
|
|
envoy.SendReq(t, ClusterType, 0, 0)
|
|
{
|
|
err, ok := getError()
|
|
require.NoError(t, err)
|
|
require.False(t, ok)
|
|
}
|
|
|
|
// Check no response sent yet
|
|
assertChanBlocked(t, envoy.stream.sendCh)
|
|
{
|
|
err, ok := getError()
|
|
require.NoError(t, err)
|
|
require.False(t, ok)
|
|
}
|
|
|
|
// Deliver a new snapshot
|
|
snap := proxycfg.TestConfigSnapshot(t)
|
|
mgr.DeliverConfig(t, sid, snap)
|
|
|
|
assertResponseSent(t, envoy.stream.sendCh, expectClustersJSON(t, snap, token, 1, 1))
|
|
|
|
// Now nuke the ACL token.
|
|
validToken.Store("")
|
|
|
|
// It also (in parallel) issues the next cluster request (which acts as an ACK
|
|
// of the version we sent)
|
|
envoy.SendReq(t, ClusterType, 1, 1)
|
|
|
|
select {
|
|
case err := <-errCh:
|
|
require.Error(t, err)
|
|
gerr, ok := status.FromError(err)
|
|
require.Truef(t, ok, "not a grpc status error: type='%T' value=%v", err, err)
|
|
require.Equal(t, codes.Unauthenticated, gerr.Code())
|
|
require.Equal(t, "unauthenticated: ACL not found", gerr.Message())
|
|
|
|
mgr.AssertWatchCancelled(t, sid)
|
|
case <-time.After(50 * time.Millisecond):
|
|
t.Fatalf("timed out waiting for handler to finish")
|
|
}
|
|
}
|
|
|
|
func TestServer_StreamAggregatedResources_ACLTokenDeleted_StreamTerminatedInBackground(t *testing.T) {
|
|
aclRules := `service "web" { policy = "write" }`
|
|
token := "service-write-on-web"
|
|
|
|
policy, err := acl.NewPolicyFromSource("", 0, aclRules, acl.SyntaxLegacy, nil, nil)
|
|
require.NoError(t, err)
|
|
|
|
var validToken atomic.Value
|
|
validToken.Store(token)
|
|
|
|
logger := testutil.Logger(t)
|
|
mgr := newTestManager(t)
|
|
aclResolve := func(id string) (acl.Authorizer, error) {
|
|
if token := validToken.Load(); token == nil || id != token.(string) {
|
|
return nil, acl.ErrNotFound
|
|
}
|
|
|
|
return acl.NewPolicyAuthorizerWithDefaults(acl.RootAuthorizer("deny"), []*acl.Policy{policy}, nil)
|
|
}
|
|
envoy := NewTestEnvoy(t, "web-sidecar-proxy", token)
|
|
defer envoy.Close()
|
|
|
|
s := Server{
|
|
Logger: logger,
|
|
CfgMgr: mgr,
|
|
Authz: mgr,
|
|
ResolveToken: aclResolve,
|
|
AuthCheckFrequency: 100 * time.Millisecond, // Make this short.
|
|
}
|
|
s.Initialize()
|
|
|
|
errCh := make(chan error, 1)
|
|
go func() {
|
|
errCh <- s.StreamAggregatedResources(envoy.stream)
|
|
}()
|
|
|
|
getError := func() (gotErr error, ok bool) {
|
|
select {
|
|
case err := <-errCh:
|
|
return err, true
|
|
default:
|
|
return nil, false
|
|
}
|
|
}
|
|
|
|
sid := structs.NewServiceID("web-sidecar-proxy", nil)
|
|
// Register the proxy to create state needed to Watch() on
|
|
mgr.RegisterProxy(t, sid)
|
|
|
|
// Send initial cluster discover (OK)
|
|
envoy.SendReq(t, ClusterType, 0, 0)
|
|
{
|
|
err, ok := getError()
|
|
require.NoError(t, err)
|
|
require.False(t, ok)
|
|
}
|
|
|
|
// Check no response sent yet
|
|
assertChanBlocked(t, envoy.stream.sendCh)
|
|
{
|
|
err, ok := getError()
|
|
require.NoError(t, err)
|
|
require.False(t, ok)
|
|
}
|
|
|
|
// Deliver a new snapshot
|
|
snap := proxycfg.TestConfigSnapshot(t)
|
|
mgr.DeliverConfig(t, sid, snap)
|
|
|
|
assertResponseSent(t, envoy.stream.sendCh, expectClustersJSON(t, snap, token, 1, 1))
|
|
|
|
// It also (in parallel) issues the next cluster request (which acts as an ACK
|
|
// of the version we sent)
|
|
envoy.SendReq(t, ClusterType, 1, 1)
|
|
|
|
// Check no response sent yet
|
|
assertChanBlocked(t, envoy.stream.sendCh)
|
|
{
|
|
err, ok := getError()
|
|
require.NoError(t, err)
|
|
require.False(t, ok)
|
|
}
|
|
|
|
// Now nuke the ACL token while there's no activity.
|
|
validToken.Store("")
|
|
|
|
select {
|
|
case err := <-errCh:
|
|
require.Error(t, err)
|
|
gerr, ok := status.FromError(err)
|
|
require.Truef(t, ok, "not a grpc status error: type='%T' value=%v", err, err)
|
|
require.Equal(t, codes.Unauthenticated, gerr.Code())
|
|
require.Equal(t, "unauthenticated: ACL not found", gerr.Message())
|
|
|
|
mgr.AssertWatchCancelled(t, sid)
|
|
case <-time.After(200 * time.Millisecond):
|
|
t.Fatalf("timed out waiting for handler to finish")
|
|
}
|
|
}
|
|
|
|
// This tests the ext_authz service method that implements connect authz.
|
|
func TestServer_Check(t *testing.T) {
|
|
|
|
tests := []struct {
|
|
name string
|
|
source string
|
|
dest string
|
|
sourcePrincipal string
|
|
destPrincipal string
|
|
authzResult connectAuthzResult
|
|
wantErr bool
|
|
wantErrCode codes.Code
|
|
wantDenied bool
|
|
wantReason string
|
|
}{
|
|
{
|
|
name: "auth allowed",
|
|
source: "web",
|
|
dest: "db",
|
|
authzResult: connectAuthzResult{true, "default allow", nil, nil, nil},
|
|
wantDenied: false,
|
|
wantReason: "default allow",
|
|
},
|
|
{
|
|
name: "auth denied",
|
|
source: "web",
|
|
dest: "db",
|
|
authzResult: connectAuthzResult{false, "default deny", nil, nil, nil},
|
|
wantDenied: true,
|
|
wantReason: "default deny",
|
|
},
|
|
{
|
|
name: "no source",
|
|
sourcePrincipal: "",
|
|
dest: "db",
|
|
// Should never make it to authz call.
|
|
wantErr: true,
|
|
wantErrCode: codes.InvalidArgument,
|
|
},
|
|
{
|
|
name: "no dest",
|
|
source: "web",
|
|
dest: "",
|
|
// Should never make it to authz call.
|
|
wantErr: true,
|
|
wantErrCode: codes.InvalidArgument,
|
|
},
|
|
{
|
|
name: "dest invalid format",
|
|
source: "web",
|
|
destPrincipal: "not-a-spiffe-id",
|
|
// Should never make it to authz call.
|
|
wantDenied: true,
|
|
wantReason: "Destination Principal is not a valid Connect identity",
|
|
},
|
|
{
|
|
name: "dest not a service URI",
|
|
source: "web",
|
|
destPrincipal: "spiffe://trust-domain.consul",
|
|
// Should never make it to authz call.
|
|
wantDenied: true,
|
|
wantReason: "Destination Principal is not a valid Service identity",
|
|
},
|
|
{
|
|
name: "ACL not got permission for authz call",
|
|
source: "web",
|
|
dest: "db",
|
|
authzResult: connectAuthzResult{false, "", nil, acl.ErrPermissionDenied, nil},
|
|
wantErr: true,
|
|
wantErrCode: codes.PermissionDenied,
|
|
},
|
|
{
|
|
name: "Random error running authz",
|
|
source: "web",
|
|
dest: "db",
|
|
authzResult: connectAuthzResult{false, "", nil, errors.New("gremlin attack"), nil},
|
|
wantErr: true,
|
|
wantErrCode: codes.Internal,
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
token := "my-real-acl-token"
|
|
logger := testutil.Logger(t)
|
|
mgr := newTestManager(t)
|
|
|
|
// Setup expected auth result against that token no lock as no other
|
|
// goroutine is touching this yet.
|
|
mgr.authz[token] = tt.authzResult
|
|
|
|
aclResolve := func(id string) (acl.Authorizer, error) {
|
|
return nil, nil
|
|
}
|
|
envoy := NewTestEnvoy(t, "web-sidecar-proxy", token)
|
|
defer envoy.Close()
|
|
|
|
s := Server{
|
|
Logger: logger,
|
|
CfgMgr: mgr,
|
|
Authz: mgr,
|
|
ResolveToken: aclResolve,
|
|
}
|
|
s.Initialize()
|
|
|
|
// Create a context with the correct token
|
|
ctx := metadata.NewIncomingContext(context.Background(),
|
|
metadata.Pairs("x-consul-token", token))
|
|
|
|
r := TestCheckRequest(t, tt.source, tt.dest)
|
|
// If sourcePrincipal is set override, or if source is also not set
|
|
// explicitly override to empty.
|
|
if tt.sourcePrincipal != "" || tt.source == "" {
|
|
r.Attributes.Source.Principal = tt.sourcePrincipal
|
|
}
|
|
if tt.destPrincipal != "" || tt.dest == "" {
|
|
r.Attributes.Destination.Principal = tt.destPrincipal
|
|
}
|
|
resp, err := s.Check(ctx, r)
|
|
// Denied is not an error
|
|
if tt.wantErr {
|
|
require.Error(t, err)
|
|
grpcStatus := status.Convert(err)
|
|
require.Equal(t, tt.wantErrCode, grpcStatus.Code())
|
|
require.Nil(t, resp)
|
|
return
|
|
}
|
|
require.NoError(t, err)
|
|
if tt.wantDenied {
|
|
require.Equal(t, int32(codes.PermissionDenied), resp.Status.Code)
|
|
} else {
|
|
require.Equal(t, int32(codes.OK), resp.Status.Code)
|
|
}
|
|
require.Contains(t, resp.Status.Message, tt.wantReason)
|
|
})
|
|
}
|
|
}
|