mirror of
https://github.com/k3s-io/kubernetes.git
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387 lines
15 KiB
Go
387 lines
15 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package clusterauthenticationtrust
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import (
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"reflect"
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"testing"
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"github.com/davecgh/go-spew/spew"
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corev1 "k8s.io/api/core/v1"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/util/diff"
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"k8s.io/apimachinery/pkg/util/validation/field"
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"k8s.io/apiserver/pkg/authentication/request/headerrequest"
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"k8s.io/apiserver/pkg/server/dynamiccertificates"
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"k8s.io/client-go/kubernetes/fake"
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corev1listers "k8s.io/client-go/listers/core/v1"
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clienttesting "k8s.io/client-go/testing"
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"k8s.io/client-go/tools/cache"
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)
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var (
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someRandomCA = []byte(`-----BEGIN CERTIFICATE-----
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MIIBqDCCAU2gAwIBAgIUfbqeieihh/oERbfvRm38XvS/xHAwCgYIKoZIzj0EAwIw
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GjEYMBYGA1UEAxMPSW50ZXJtZWRpYXRlLUNBMCAXDTE2MTAxMTA1MDYwMFoYDzIx
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MTYwOTE3MDUwNjAwWjAUMRIwEAYDVQQDEwlNeSBDbGllbnQwWTATBgcqhkjOPQIB
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BggqhkjOPQMBBwNCAARv6N4R/sjMR65iMFGNLN1GC/vd7WhDW6J4X/iAjkRLLnNb
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KbRG/AtOUZ+7upJ3BWIRKYbOabbQGQe2BbKFiap4o3UwczAOBgNVHQ8BAf8EBAMC
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BaAwEwYDVR0lBAwwCgYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU
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K/pZOWpNcYai6eHFpmJEeFpeQlEwHwYDVR0jBBgwFoAUX6nQlxjfWnP6aM1meO/Q
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a6b3a9kwCgYIKoZIzj0EAwIDSQAwRgIhAIWTKw/sjJITqeuNzJDAKU4xo1zL+xJ5
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MnVCuBwfwDXCAiEAw/1TA+CjPq9JC5ek1ifR0FybTURjeQqYkKpve1dveps=
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-----END CERTIFICATE-----
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`)
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anotherRandomCA = []byte(`-----BEGIN CERTIFICATE-----
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MIIDQDCCAiigAwIBAgIJANWw74P5KJk2MA0GCSqGSIb3DQEBCwUAMDQxMjAwBgNV
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BAMMKWdlbmVyaWNfd2ViaG9va19hZG1pc3Npb25fcGx1Z2luX3Rlc3RzX2NhMCAX
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DTE3MTExNjAwMDUzOVoYDzIyOTEwOTAxMDAwNTM5WjAjMSEwHwYDVQQDExh3ZWJo
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b29rLXRlc3QuZGVmYXVsdC5zdmMwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK
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AoIBAQDXd/nQ89a5H8ifEsigmMd01Ib6NVR3bkJjtkvYnTbdfYEBj7UzqOQtHoLa
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dIVmefny5uIHvj93WD8WDVPB3jX2JHrXkDTXd/6o6jIXHcsUfFTVLp6/bZ+Anqe0
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r/7hAPkzA2A7APyTWM3ZbEeo1afXogXhOJ1u/wz0DflgcB21gNho4kKTONXO3NHD
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XLpspFqSkxfEfKVDJaYAoMnYZJtFNsa2OvsmLnhYF8bjeT3i07lfwrhUZvP+7Gsp
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7UgUwc06WuNHjfx1s5e6ySzH0QioMD1rjYneqOvk0pKrMIhuAEWXqq7jlXcDtx1E
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j+wnYbVqqVYheHZ8BCJoVAAQGs9/AgMBAAGjZDBiMAkGA1UdEwQCMAAwCwYDVR0P
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BAQDAgXgMB0GA1UdJQQWMBQGCCsGAQUFBwMCBggrBgEFBQcDATApBgNVHREEIjAg
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hwR/AAABghh3ZWJob29rLXRlc3QuZGVmYXVsdC5zdmMwDQYJKoZIhvcNAQELBQAD
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ggEBAD/GKSPNyQuAOw/jsYZesb+RMedbkzs18sSwlxAJQMUrrXwlVdHrA8q5WhE6
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ABLqU1b8lQ8AWun07R8k5tqTmNvCARrAPRUqls/ryER+3Y9YEcxEaTc3jKNZFLbc
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T6YtcnkdhxsiO136wtiuatpYL91RgCmuSpR8+7jEHhuFU01iaASu7ypFrUzrKHTF
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bKwiLRQi1cMzVcLErq5CDEKiKhUkoDucyARFszrGt9vNIl/YCcBOkcNvM3c05Hn3
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M++C29JwS3Hwbubg6WO3wjFjoEhpCwU6qRYUz3MRp4tHO4kxKXx+oQnUiFnR7vW0
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YkNtGc1RUDHwecCTFpJtPb7Yu/E=
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-----END CERTIFICATE-----
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`)
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someRandomCAProvider dynamiccertificates.CAContentProvider
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anotherRandomCAProvider dynamiccertificates.CAContentProvider
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)
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func init() {
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var err error
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someRandomCAProvider, err = dynamiccertificates.NewStaticCAContent("foo", someRandomCA)
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if err != nil {
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panic(err)
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}
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anotherRandomCAProvider, err = dynamiccertificates.NewStaticCAContent("bar", anotherRandomCA)
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if err != nil {
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panic(err)
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}
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}
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func TestWriteClientCAs(t *testing.T) {
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tests := []struct {
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name string
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clusterAuthInfo ClusterAuthenticationInfo
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preexistingObjs []runtime.Object
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expectedConfigMaps map[string]*corev1.ConfigMap
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expectCreate bool
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}{
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{
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name: "basic",
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clusterAuthInfo: ClusterAuthenticationInfo{
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ClientCA: someRandomCAProvider,
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RequestHeaderUsernameHeaders: headerrequest.StaticStringSlice{"alfa", "bravo", "charlie"},
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RequestHeaderGroupHeaders: headerrequest.StaticStringSlice{"delta"},
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RequestHeaderExtraHeaderPrefixes: headerrequest.StaticStringSlice{"echo", "foxtrot"},
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RequestHeaderCA: anotherRandomCAProvider,
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RequestHeaderAllowedNames: headerrequest.StaticStringSlice{"first", "second"},
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},
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expectedConfigMaps: map[string]*corev1.ConfigMap{
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"extension-apiserver-authentication": {
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ObjectMeta: metav1.ObjectMeta{Namespace: metav1.NamespaceSystem, Name: "extension-apiserver-authentication"},
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Data: map[string]string{
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"client-ca-file": string(someRandomCA),
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"requestheader-username-headers": `["alfa","bravo","charlie"]`,
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"requestheader-group-headers": `["delta"]`,
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"requestheader-extra-headers-prefix": `["echo","foxtrot"]`,
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"requestheader-client-ca-file": string(anotherRandomCA),
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"requestheader-allowed-names": `["first","second"]`,
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},
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},
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},
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expectCreate: true,
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},
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{
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name: "skip extension-apiserver-authentication",
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clusterAuthInfo: ClusterAuthenticationInfo{
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RequestHeaderCA: anotherRandomCAProvider,
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RequestHeaderAllowedNames: headerrequest.StaticStringSlice{"first", "second"},
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},
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expectedConfigMaps: map[string]*corev1.ConfigMap{
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"extension-apiserver-authentication": {
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ObjectMeta: metav1.ObjectMeta{Namespace: metav1.NamespaceSystem, Name: "extension-apiserver-authentication"},
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Data: map[string]string{
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"requestheader-username-headers": `[]`,
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"requestheader-group-headers": `[]`,
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"requestheader-extra-headers-prefix": `[]`,
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"requestheader-client-ca-file": string(anotherRandomCA),
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"requestheader-allowed-names": `["first","second"]`,
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},
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},
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},
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expectCreate: true,
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},
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{
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name: "skip extension-apiserver-authentication",
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clusterAuthInfo: ClusterAuthenticationInfo{
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ClientCA: someRandomCAProvider,
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},
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expectedConfigMaps: map[string]*corev1.ConfigMap{
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"extension-apiserver-authentication": {
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ObjectMeta: metav1.ObjectMeta{Namespace: metav1.NamespaceSystem, Name: "extension-apiserver-authentication"},
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Data: map[string]string{
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"client-ca-file": string(someRandomCA),
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},
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},
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},
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expectCreate: true,
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},
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{
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name: "empty allowed names",
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clusterAuthInfo: ClusterAuthenticationInfo{
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RequestHeaderCA: anotherRandomCAProvider,
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},
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expectedConfigMaps: map[string]*corev1.ConfigMap{
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"extension-apiserver-authentication": {
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ObjectMeta: metav1.ObjectMeta{Namespace: metav1.NamespaceSystem, Name: "extension-apiserver-authentication"},
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Data: map[string]string{
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"requestheader-username-headers": `[]`,
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"requestheader-group-headers": `[]`,
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"requestheader-extra-headers-prefix": `[]`,
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"requestheader-client-ca-file": string(anotherRandomCA),
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"requestheader-allowed-names": `[]`,
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},
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},
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},
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expectCreate: true,
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},
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{
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name: "overwrite extension-apiserver-authentication",
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clusterAuthInfo: ClusterAuthenticationInfo{
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ClientCA: someRandomCAProvider,
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},
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preexistingObjs: []runtime.Object{
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&corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{Namespace: metav1.NamespaceSystem, Name: "extension-apiserver-authentication"},
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Data: map[string]string{
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"client-ca-file": string(anotherRandomCA),
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},
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},
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},
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expectedConfigMaps: map[string]*corev1.ConfigMap{
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"extension-apiserver-authentication": {
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ObjectMeta: metav1.ObjectMeta{Namespace: metav1.NamespaceSystem, Name: "extension-apiserver-authentication"},
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Data: map[string]string{
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"client-ca-file": string(anotherRandomCA) + string(someRandomCA),
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},
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},
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},
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},
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{
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name: "overwrite extension-apiserver-authentication requestheader",
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clusterAuthInfo: ClusterAuthenticationInfo{
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RequestHeaderUsernameHeaders: headerrequest.StaticStringSlice{},
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RequestHeaderGroupHeaders: headerrequest.StaticStringSlice{},
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RequestHeaderExtraHeaderPrefixes: headerrequest.StaticStringSlice{},
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RequestHeaderCA: anotherRandomCAProvider,
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RequestHeaderAllowedNames: headerrequest.StaticStringSlice{},
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},
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preexistingObjs: []runtime.Object{
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&corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{Namespace: metav1.NamespaceSystem, Name: "extension-apiserver-authentication"},
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Data: map[string]string{
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"requestheader-username-headers": `[]`,
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"requestheader-group-headers": `[]`,
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"requestheader-extra-headers-prefix": `[]`,
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"requestheader-client-ca-file": string(someRandomCA),
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"requestheader-allowed-names": `[]`,
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},
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},
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},
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expectedConfigMaps: map[string]*corev1.ConfigMap{
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"extension-apiserver-authentication": {
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ObjectMeta: metav1.ObjectMeta{Namespace: metav1.NamespaceSystem, Name: "extension-apiserver-authentication"},
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Data: map[string]string{
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"requestheader-username-headers": `[]`,
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"requestheader-group-headers": `[]`,
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"requestheader-extra-headers-prefix": `[]`,
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"requestheader-client-ca-file": string(someRandomCA) + string(anotherRandomCA),
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"requestheader-allowed-names": `[]`,
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},
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},
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},
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},
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{
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name: "namespace exists",
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clusterAuthInfo: ClusterAuthenticationInfo{
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ClientCA: someRandomCAProvider,
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},
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preexistingObjs: []runtime.Object{
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&corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: metav1.NamespaceSystem}},
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},
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expectedConfigMaps: map[string]*corev1.ConfigMap{
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"extension-apiserver-authentication": {
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ObjectMeta: metav1.ObjectMeta{Namespace: metav1.NamespaceSystem, Name: "extension-apiserver-authentication"},
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Data: map[string]string{
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"client-ca-file": string(someRandomCA),
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},
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},
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},
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expectCreate: true,
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},
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{
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name: "skip on no change",
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clusterAuthInfo: ClusterAuthenticationInfo{
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RequestHeaderUsernameHeaders: headerrequest.StaticStringSlice{},
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RequestHeaderGroupHeaders: headerrequest.StaticStringSlice{},
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RequestHeaderExtraHeaderPrefixes: headerrequest.StaticStringSlice{},
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RequestHeaderCA: anotherRandomCAProvider,
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RequestHeaderAllowedNames: headerrequest.StaticStringSlice{},
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},
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preexistingObjs: []runtime.Object{
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&corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{Namespace: metav1.NamespaceSystem, Name: "extension-apiserver-authentication"},
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Data: map[string]string{
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"requestheader-username-headers": `[]`,
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"requestheader-group-headers": `[]`,
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"requestheader-extra-headers-prefix": `[]`,
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"requestheader-client-ca-file": string(anotherRandomCA),
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"requestheader-allowed-names": `[]`,
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},
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},
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},
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expectedConfigMaps: map[string]*corev1.ConfigMap{},
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expectCreate: false,
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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client := fake.NewSimpleClientset(test.preexistingObjs...)
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configMapIndexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
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for _, obj := range test.preexistingObjs {
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configMapIndexer.Add(obj)
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}
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configmapLister := corev1listers.NewConfigMapLister(configMapIndexer)
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c := &Controller{
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configMapLister: configmapLister,
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configMapClient: client.CoreV1(),
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namespaceClient: client.CoreV1(),
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requiredAuthenticationData: test.clusterAuthInfo,
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}
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err := c.syncConfigMap()
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if err != nil {
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t.Fatal(err)
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}
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actualConfigMaps, updated := getFinalConfigMaps(t, client)
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if !reflect.DeepEqual(test.expectedConfigMaps, actualConfigMaps) {
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t.Fatalf("%s: %v", test.name, diff.ObjectReflectDiff(test.expectedConfigMaps, actualConfigMaps))
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}
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if test.expectCreate != updated {
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t.Fatalf("%s: expected %v, got %v", test.name, test.expectCreate, updated)
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}
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})
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}
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}
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func getFinalConfigMaps(t *testing.T, client *fake.Clientset) (map[string]*corev1.ConfigMap, bool) {
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ret := map[string]*corev1.ConfigMap{}
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created := false
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for _, action := range client.Actions() {
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t.Log(spew.Sdump(action))
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if action.Matches("create", "configmaps") {
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created = true
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obj := action.(clienttesting.CreateAction).GetObject().(*corev1.ConfigMap)
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ret[obj.Name] = obj
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}
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if action.Matches("update", "configmaps") {
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obj := action.(clienttesting.UpdateAction).GetObject().(*corev1.ConfigMap)
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ret[obj.Name] = obj
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}
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}
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return ret, created
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}
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func TestWriteConfigMapDeleted(t *testing.T) {
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// the basics are tested above, this checks the deletion logic when the ca bundles are too large
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cm := &corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{Namespace: metav1.NamespaceSystem, Name: "extension-apiserver-authentication"},
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Data: map[string]string{
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"requestheader-username-headers": `[]`,
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"requestheader-group-headers": `[]`,
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"requestheader-extra-headers-prefix": `[]`,
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"requestheader-client-ca-file": string(anotherRandomCA),
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"requestheader-allowed-names": `[]`,
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},
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}
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t.Run("request entity too large", func(t *testing.T) {
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client := fake.NewSimpleClientset()
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client.PrependReactor("update", "configmaps", func(action clienttesting.Action) (handled bool, ret runtime.Object, err error) {
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return true, nil, apierrors.NewRequestEntityTooLargeError("way too big")
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})
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client.PrependReactor("delete", "configmaps", func(action clienttesting.Action) (handled bool, ret runtime.Object, err error) {
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return true, nil, nil
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})
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err := writeConfigMap(client.CoreV1(), cm)
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if err == nil || err.Error() != "Request entity too large: way too big" {
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t.Fatal(err)
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}
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if len(client.Actions()) != 2 {
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t.Fatal(client.Actions())
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}
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_, ok := client.Actions()[1].(clienttesting.DeleteAction)
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if !ok {
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t.Fatal(client.Actions())
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}
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})
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t.Run("ca bundle too large", func(t *testing.T) {
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client := fake.NewSimpleClientset()
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client.PrependReactor("update", "configmaps", func(action clienttesting.Action) (handled bool, ret runtime.Object, err error) {
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return true, nil, apierrors.NewInvalid(schema.GroupKind{Kind: "ConfigMap"}, cm.Name, field.ErrorList{field.TooLong(field.NewPath(""), cm, corev1.MaxSecretSize)})
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})
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client.PrependReactor("delete", "configmaps", func(action clienttesting.Action) (handled bool, ret runtime.Object, err error) {
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return true, nil, nil
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})
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err := writeConfigMap(client.CoreV1(), cm)
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if err == nil || err.Error() != `ConfigMap "extension-apiserver-authentication" is invalid: []: Too long: must have at most 1048576 bytes` {
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t.Fatal(err)
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}
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if len(client.Actions()) != 2 {
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t.Fatal(client.Actions())
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}
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_, ok := client.Actions()[1].(clienttesting.DeleteAction)
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if !ok {
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t.Fatal(client.Actions())
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}
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})
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}
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