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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
//go:build linux
package main
import (
"context"
"errors"
"fmt"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"tailscale.com/ipn"
"tailscale.com/kube/egressservices"
"tailscale.com/kube/ingressservices"
"tailscale.com/kube/kubeapi"
"tailscale.com/kube/kubeclient"
"tailscale.com/kube/kubetypes"
"tailscale.com/tailcfg"
)
func TestSetupKube(t *testing.T) {
tests := []struct {
name string
cfg *settings
wantErr bool
wantCfg *settings
kc *kubeClient
}{
{
name: "TS_AUTHKEY set, state Secret exists",
cfg: &settings{
AuthKey: "foo",
KubeSecret: "foo",
},
kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
return false, false, nil
},
GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
return nil, nil
},
}},
wantCfg: &settings{
AuthKey: "foo",
KubeSecret: "foo",
},
},
{
name: "TS_AUTHKEY set, state Secret does not exist, we have permissions to create it",
cfg: &settings{
AuthKey: "foo",
KubeSecret: "foo",
},
kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
return false, true, nil
},
GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
return nil, &kubeapi.Status{Code: 404}
},
}},
wantCfg: &settings{
AuthKey: "foo",
KubeSecret: "foo",
},
},
{
name: "TS_AUTHKEY set, state Secret does not exist, we do not have permissions to create it",
cfg: &settings{
AuthKey: "foo",
KubeSecret: "foo",
},
kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
return false, false, nil
},
GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
return nil, &kubeapi.Status{Code: 404}
},
}},
wantCfg: &settings{
AuthKey: "foo",
KubeSecret: "foo",
},
wantErr: true,
},
{
name: "TS_AUTHKEY set, we encounter a non-404 error when trying to retrieve the state Secret",
cfg: &settings{
AuthKey: "foo",
KubeSecret: "foo",
},
kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
return false, false, nil
},
GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
return nil, &kubeapi.Status{Code: 403}
},
}},
wantCfg: &settings{
AuthKey: "foo",
KubeSecret: "foo",
},
wantErr: true,
},
{
name: "TS_AUTHKEY set, we encounter a non-404 error when trying to check Secret permissions",
cfg: &settings{
AuthKey: "foo",
KubeSecret: "foo",
},
wantCfg: &settings{
AuthKey: "foo",
KubeSecret: "foo",
},
kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
return false, false, errors.New("broken")
},
}},
wantErr: true,
},
{
// Interactive login using URL in Pod logs
name: "TS_AUTHKEY not set, state Secret does not exist, we have permissions to create it",
cfg: &settings{
KubeSecret: "foo",
},
wantCfg: &settings{
KubeSecret: "foo",
},
kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
return false, true, nil
},
GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
return nil, &kubeapi.Status{Code: 404}
},
}},
},
{
// Interactive login using URL in Pod logs
name: "TS_AUTHKEY not set, state Secret exists, but does not contain auth key",
cfg: &settings{
KubeSecret: "foo",
},
wantCfg: &settings{
KubeSecret: "foo",
},
kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
return false, false, nil
},
GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
return &kubeapi.Secret{}, nil
},
}},
},
{
name: "TS_AUTHKEY not set, state Secret contains auth key, we do not have RBAC to patch it",
cfg: &settings{
KubeSecret: "foo",
},
kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
return false, false, nil
},
GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
return &kubeapi.Secret{Data: map[string][]byte{"authkey": []byte("foo")}}, nil
},
}},
wantCfg: &settings{
KubeSecret: "foo",
},
wantErr: true,
},
{
name: "TS_AUTHKEY not set, state Secret contains auth key, we have RBAC to patch it",
cfg: &settings{
KubeSecret: "foo",
},
kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
return true, false, nil
},
GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
return &kubeapi.Secret{Data: map[string][]byte{"authkey": []byte("foo")}}, nil
},
}},
wantCfg: &settings{
KubeSecret: "foo",
AuthKey: "foo",
KubernetesCanPatch: true,
},
},
}
for _, tt := range tests {
kc := tt.kc
t.Run(tt.name, func(t *testing.T) {
if err := tt.cfg.setupKube(context.Background(), kc); (err != nil) != tt.wantErr {
t.Errorf("settings.setupKube() error = %v, wantErr %v", err, tt.wantErr)
}
if diff := cmp.Diff(*tt.cfg, *tt.wantCfg); diff != "" {
t.Errorf("unexpected contents of settings after running settings.setupKube()\n(-got +want):\n%s", diff)
}
})
}
}
func TestWaitForConsistentState(t *testing.T) {
data := map[string][]byte{
// Missing _current-profile.
string(ipn.KnownProfilesStateKey): []byte(""),
string(ipn.MachineKeyStateKey): []byte(""),
"profile-foo": []byte(""),
}
kc := &kubeClient{
Client: &kubeclient.FakeClient{
GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
return &kubeapi.Secret{
Data: data,
}, nil
},
},
}
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
if err := kc.waitForConsistentState(ctx); err != context.DeadlineExceeded {
t.Fatalf("expected DeadlineExceeded, got %v", err)
}
ctx, cancel = context.WithTimeout(context.Background(), time.Second)
defer cancel()
data[string(ipn.CurrentProfileStateKey)] = []byte("")
if err := kc.waitForConsistentState(ctx); err != nil {
t.Fatalf("expected nil, got %v", err)
}
}
func TestResetContainerbootState(t *testing.T) {
capver := fmt.Appendf(nil, "%d", tailcfg.CurrentCapabilityVersion)
for name, tc := range map[string]struct {
podUID string
initial map[string][]byte
expected map[string][]byte
}{
"empty_initial": {
podUID: "1234",
initial: map[string][]byte{},
expected: map[string][]byte{
kubetypes.KeyCapVer: capver,
kubetypes.KeyPodUID: []byte("1234"),
},
},
"empty_initial_no_pod_uid": {
initial: map[string][]byte{},
expected: map[string][]byte{
kubetypes.KeyCapVer: capver,
},
},
"only_relevant_keys_updated": {
podUID: "1234",
initial: map[string][]byte{
kubetypes.KeyCapVer: []byte("1"),
kubetypes.KeyPodUID: []byte("5678"),
kubetypes.KeyDeviceID: []byte("device-id"),
kubetypes.KeyDeviceFQDN: []byte("device-fqdn"),
kubetypes.KeyDeviceIPs: []byte(`["192.0.2.1"]`),
kubetypes.KeyHTTPSEndpoint: []byte("https://example.com"),
egressservices.KeyEgressServices: []byte("egress-services"),
ingressservices.IngressConfigKey: []byte("ingress-config"),
"_current-profile": []byte("current-profile"),
"_machinekey": []byte("machine-key"),
"_profiles": []byte("profiles"),
"_serve_e0ce": []byte("serve-e0ce"),
"profile-e0ce": []byte("profile-e0ce"),
},
expected: map[string][]byte{
kubetypes.KeyCapVer: capver,
kubetypes.KeyPodUID: []byte("1234"),
// Cleared keys.
kubetypes.KeyDeviceID: nil,
kubetypes.KeyDeviceFQDN: nil,
kubetypes.KeyDeviceIPs: nil,
kubetypes.KeyHTTPSEndpoint: nil,
egressservices.KeyEgressServices: nil,
ingressservices.IngressConfigKey: nil,
// Tailscaled keys not included in patch.
},
},
} {
t.Run(name, func(t *testing.T) {
var actual map[string][]byte
kc := &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
return &kubeapi.Secret{
Data: tc.initial,
}, nil
},
StrategicMergePatchSecretImpl: func(ctx context.Context, name string, secret *kubeapi.Secret, _ string) error {
actual = secret.Data
return nil
},
}}
if err := kc.resetContainerbootState(context.Background(), tc.podUID); err != nil {
t.Fatalf("resetContainerbootState() error = %v", err)
}
if diff := cmp.Diff(tc.expected, actual); diff != "" {
t.Errorf("resetContainerbootState() mismatch (-want +got):\n%s", diff)
}
})
}
}
|
