forked from kubernetes/kubernetes
-
Notifications
You must be signed in to change notification settings - Fork 1
/
fuzzer.go
171 lines (155 loc) · 4.73 KB
/
fuzzer.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
/*
Copyright 2017 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package fuzzer
import (
"fmt"
"strconv"
"github.com/google/gofuzz"
"k8s.io/apimachinery/pkg/api/resource"
apitesting "k8s.io/apimachinery/pkg/api/testing"
"k8s.io/apimachinery/pkg/api/testing/fuzzer"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
metav1alpha1 "k8s.io/apimachinery/pkg/apis/meta/v1alpha1"
"k8s.io/apimachinery/pkg/runtime"
runtimeserializer "k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apimachinery/pkg/types"
)
func genericFuzzerFuncs(codecs runtimeserializer.CodecFactory) []interface{} {
return []interface{}{
func(q *resource.Quantity, c fuzz.Continue) {
*q = *resource.NewQuantity(c.Int63n(1000), resource.DecimalExponent)
},
func(j *int, c fuzz.Continue) {
*j = int(c.Int31())
},
func(j **int, c fuzz.Continue) {
if c.RandBool() {
i := int(c.Int31())
*j = &i
} else {
*j = nil
}
},
func(j *runtime.TypeMeta, c fuzz.Continue) {
// We have to customize the randomization of TypeMetas because their
// APIVersion and Kind must remain blank in memory.
j.APIVersion = ""
j.Kind = ""
},
func(j *runtime.Object, c fuzz.Continue) {
// TODO: uncomment when round trip starts from a versioned object
if true { //c.RandBool() {
*j = &runtime.Unknown{
// We do not set TypeMeta here because it is not carried through a round trip
Raw: []byte(`{"apiVersion":"unknown.group/unknown","kind":"Something","someKey":"someValue"}`),
ContentType: runtime.ContentTypeJSON,
}
} else {
types := []runtime.Object{&metav1.Status{}, &metav1.APIGroup{}}
t := types[c.Rand.Intn(len(types))]
c.Fuzz(t)
*j = t
}
},
func(r *runtime.RawExtension, c fuzz.Continue) {
// Pick an arbitrary type and fuzz it
types := []runtime.Object{&metav1.Status{}, &metav1.APIGroup{}}
obj := types[c.Rand.Intn(len(types))]
c.Fuzz(obj)
// Find a codec for converting the object to raw bytes. This is necessary for the
// api version and kind to be correctly set be serialization.
var codec = apitesting.TestCodec(codecs, metav1.SchemeGroupVersion)
// Convert the object to raw bytes
bytes, err := runtime.Encode(codec, obj)
if err != nil {
panic(fmt.Sprintf("Failed to encode object: %v", err))
}
// strip trailing newlines which do not survive roundtrips
for len(bytes) >= 1 && bytes[len(bytes)-1] == 10 {
bytes = bytes[:len(bytes)-1]
}
// Set the bytes field on the RawExtension
r.Raw = bytes
},
}
}
func v1FuzzerFuncs(codecs runtimeserializer.CodecFactory) []interface{} {
return []interface{}{
func(j *metav1.TypeMeta, c fuzz.Continue) {
// We have to customize the randomization of TypeMetas because their
// APIVersion and Kind must remain blank in memory.
j.APIVersion = ""
j.Kind = ""
},
func(j *metav1.ObjectMeta, c fuzz.Continue) {
j.Name = c.RandString()
j.ResourceVersion = strconv.FormatUint(c.RandUint64(), 10)
j.SelfLink = c.RandString()
j.UID = types.UID(c.RandString())
j.GenerateName = c.RandString()
var sec, nsec int64
c.Fuzz(&sec)
c.Fuzz(&nsec)
j.CreationTimestamp = metav1.Unix(sec, nsec).Rfc3339Copy()
},
func(j *metav1.ListMeta, c fuzz.Continue) {
j.ResourceVersion = strconv.FormatUint(c.RandUint64(), 10)
j.SelfLink = c.RandString()
},
}
}
func v1alpha1FuzzerFuncs(codecs runtimeserializer.CodecFactory) []interface{} {
return []interface{}{
func(r *metav1alpha1.TableRow, c fuzz.Continue) {
c.Fuzz(&r.Object)
c.Fuzz(&r.Conditions)
if len(r.Conditions) == 0 {
r.Conditions = nil
}
n := c.Intn(10)
if n > 0 {
r.Cells = make([]interface{}, n)
}
for i := range r.Cells {
t := c.Intn(6)
switch t {
case 0:
r.Cells[i] = c.RandString()
case 1:
r.Cells[i] = c.Uint64()
case 2:
r.Cells[i] = c.RandBool()
case 3:
x := map[string]interface{}{}
for j := c.Intn(10) + 1; j >= 0; j-- {
x[c.RandString()] = c.RandString()
}
r.Cells[i] = x
case 4:
x := make([]interface{}, c.Intn(10))
for i := range x {
x[i] = c.Uint64()
}
r.Cells[i] = x
default:
r.Cells[i] = nil
}
}
},
}
}
var Funcs = fuzzer.MergeFuzzerFuncs(
genericFuzzerFuncs,
v1FuzzerFuncs,
v1alpha1FuzzerFuncs,
)