1/* 2Copyright 2018 The Kubernetes Authors. 3 4Licensed under the Apache License, Version 2.0 (the "License"); 5you may not use this file except in compliance with the License. 6You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10Unless required by applicable law or agreed to in writing, software 11distributed under the License is distributed on an "AS IS" BASIS, 12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13See the License for the specific language governing permissions and 14limitations under the License. 15*/ 16 17package policy 18 19import ( 20 "math/rand" 21 "testing" 22 "time" 23 24 "github.com/stretchr/testify/require" 25 26 "k8s.io/apimachinery/pkg/api/apitesting/fuzzer" 27 "k8s.io/apimachinery/pkg/runtime" 28 runtimeserializer "k8s.io/apimachinery/pkg/runtime/serializer" 29 "k8s.io/apimachinery/pkg/util/sets" 30 "k8s.io/apiserver/pkg/apis/audit" 31 auditfuzz "k8s.io/apiserver/pkg/apis/audit/fuzzer" 32) 33 34func TestEnforcePolicy(t *testing.T) { 35 scheme := runtime.NewScheme() 36 audit.SchemeBuilder.AddToScheme(scheme) 37 codecs := runtimeserializer.NewCodecFactory(scheme) 38 rs := rand.NewSource(time.Now().UnixNano()) 39 objectFuzzer := fuzzer.FuzzerFor(auditfuzz.Funcs, rs, codecs) 40 41 for _, tc := range []struct { 42 name string 43 level audit.Level 44 omitStages []audit.Stage 45 }{ 46 { 47 name: "level metadata", 48 level: audit.LevelMetadata, 49 }, 50 { 51 name: "level request", 52 level: audit.LevelRequest, 53 }, 54 { 55 name: "level requestresponse", 56 level: audit.LevelRequestResponse, 57 }, 58 { 59 name: "level none", 60 level: audit.LevelNone, 61 }, 62 { 63 name: "level unknown", 64 level: audit.Level("unknown"), 65 }, 66 { 67 name: "stage valid", 68 level: audit.LevelRequest, 69 omitStages: []audit.Stage{audit.StageRequestReceived}, 70 }, 71 { 72 name: "stage unknown", 73 level: audit.LevelRequest, 74 omitStages: []audit.Stage{"unknown"}, 75 }, 76 } { 77 t.Run(tc.name, func(t *testing.T) { 78 events := make([]audit.Event, 20) 79 omitSet := sets.NewString(ConvertStagesToStrings(tc.omitStages)...) 80 for i := range events { 81 e := &events[i] 82 objectFuzzer.Fuzz(e) 83 ev, err := EnforcePolicy(e, tc.level, tc.omitStages) 84 if omitSet.Has(string(e.Stage)) { 85 require.NoError(t, err) 86 require.Nil(t, ev) 87 return 88 } 89 switch tc.level { 90 case audit.LevelNone: 91 require.Nil(t, ev) 92 case audit.LevelMetadata: 93 expected := &audit.Event{ 94 TypeMeta: e.TypeMeta, 95 Level: tc.level, 96 AuditID: e.AuditID, 97 Stage: e.Stage, 98 RequestURI: e.RequestURI, 99 Verb: e.Verb, 100 User: e.User, 101 ImpersonatedUser: e.ImpersonatedUser, 102 SourceIPs: e.SourceIPs, 103 UserAgent: e.UserAgent, 104 ObjectRef: e.ObjectRef, 105 ResponseStatus: e.ResponseStatus, 106 RequestReceivedTimestamp: e.RequestReceivedTimestamp, 107 StageTimestamp: e.StageTimestamp, 108 Annotations: e.Annotations, 109 RequestObject: nil, 110 ResponseObject: nil, 111 } 112 require.Equal(t, expected, ev) 113 case audit.LevelRequest: 114 expected := &audit.Event{ 115 TypeMeta: e.TypeMeta, 116 Level: tc.level, 117 AuditID: e.AuditID, 118 Stage: e.Stage, 119 RequestURI: e.RequestURI, 120 Verb: e.Verb, 121 User: e.User, 122 ImpersonatedUser: e.ImpersonatedUser, 123 SourceIPs: e.SourceIPs, 124 UserAgent: e.UserAgent, 125 ObjectRef: e.ObjectRef, 126 ResponseStatus: e.ResponseStatus, 127 RequestReceivedTimestamp: e.RequestReceivedTimestamp, 128 StageTimestamp: e.StageTimestamp, 129 Annotations: e.Annotations, 130 RequestObject: e.RequestObject, 131 ResponseObject: nil, 132 } 133 require.Equal(t, expected, ev) 134 case audit.LevelRequestResponse: 135 expected := e.DeepCopy() 136 expected.Level = tc.level 137 require.Equal(t, expected, ev) 138 default: 139 require.Error(t, err) 140 return 141 } 142 require.NoError(t, err) 143 } 144 }) 145 } 146} 147