kubernetes fuzzer 源码
kubernetes fuzzer 代码
文件路径：/pkg/apis/core/fuzzer/fuzzer.go
/*
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 (
"reflect"
"strconv"
"time"
fuzz "github.com/google/gofuzz"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
runtimeserializer "k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/kubernetes/pkg/apis/core"
utilpointer "k8s.io/utils/pointer"
)
// Funcs returns the fuzzer functions for the core group.
var Funcs = func(codecs runtimeserializer.CodecFactory) []interface{} {
return []interface{}{
func(q *resource.Quantity, c fuzz.Continue) {
*q = *resource.NewQuantity(c.Int63n(1000), resource.DecimalExponent)
},
func(j *core.ObjectReference, c fuzz.Continue) {
// We have to customize the randomization of TypeMetas because their
// APIVersion and Kind must remain blank in memory.
j.APIVersion = c.RandString()
j.Kind = c.RandString()
j.Namespace = c.RandString()
j.Name = c.RandString()
j.ResourceVersion = strconv.FormatUint(c.RandUint64(), 10)
j.FieldPath = c.RandString()
},
func(j *core.PodExecOptions, c fuzz.Continue) {
j.Stdout = true
j.Stderr = true
},
func(j *core.PodAttachOptions, c fuzz.Continue) {
j.Stdout = true
j.Stderr = true
},
func(j *core.PodPortForwardOptions, c fuzz.Continue) {
if c.RandBool() {
j.Ports = make([]int32, c.Intn(10))
for i := range j.Ports {
j.Ports[i] = c.Int31n(65535)
}
}
},
func(s *core.PodSpec, c fuzz.Continue) {
c.FuzzNoCustom(s)
// has a default value
ttl := int64(30)
if c.RandBool() {
ttl = int64(c.Uint32())
}
s.TerminationGracePeriodSeconds = &ttl
c.Fuzz(s.SecurityContext)
if s.SecurityContext == nil {
s.SecurityContext = new(core.PodSecurityContext)
}
if s.Affinity == nil {
s.Affinity = new(core.Affinity)
}
if s.SchedulerName == "" {
s.SchedulerName = v1.DefaultSchedulerName
}
if s.EnableServiceLinks == nil {
enableServiceLinks := v1.DefaultEnableServiceLinks
s.EnableServiceLinks = &enableServiceLinks
}
},
func(j *core.PodPhase, c fuzz.Continue) {
statuses := []core.PodPhase{core.PodPending, core.PodRunning, core.PodFailed, core.PodUnknown}
*j = statuses[c.Rand.Intn(len(statuses))]
},
func(j *core.Binding, c fuzz.Continue) {
c.Fuzz(&j.ObjectMeta)
j.Target.Name = c.RandString()
},
func(j *core.ReplicationController, c fuzz.Continue) {
c.FuzzNoCustom(j)
// match defaulting
if j.Spec.Template != nil {
if len(j.Labels) == 0 {
j.Labels = j.Spec.Template.Labels
}
if len(j.Spec.Selector) == 0 {
j.Spec.Selector = j.Spec.Template.Labels
}
}
},
func(j *core.ReplicationControllerSpec, c fuzz.Continue) {
c.FuzzNoCustom(j) // fuzz self without calling this function again
//j.TemplateRef = nil // this is required for round trip
},
func(j *core.List, c fuzz.Continue) {
c.FuzzNoCustom(j) // fuzz self without calling this function again
// TODO: uncomment when round trip starts from a versioned object
if false { //j.Items == nil {
j.Items = []runtime.Object{}
}
},
func(q *core.ResourceRequirements, c fuzz.Continue) {
randomQuantity := func() resource.Quantity {
var q resource.Quantity
c.Fuzz(&q)
// precalc the string for benchmarking purposes
_ = q.String()
return q
}
q.Limits = make(core.ResourceList)
q.Requests = make(core.ResourceList)
cpuLimit := randomQuantity()
q.Limits[core.ResourceCPU] = cpuLimit.DeepCopy()
q.Requests[core.ResourceCPU] = cpuLimit.DeepCopy()
memoryLimit := randomQuantity()
q.Limits[core.ResourceMemory] = memoryLimit.DeepCopy()
q.Requests[core.ResourceMemory] = memoryLimit.DeepCopy()
storageLimit := randomQuantity()
q.Limits[core.ResourceStorage] = storageLimit.DeepCopy()
q.Requests[core.ResourceStorage] = storageLimit.DeepCopy()
},
func(q *core.LimitRangeItem, c fuzz.Continue) {
var cpuLimit resource.Quantity
c.Fuzz(&cpuLimit)
q.Type = core.LimitTypeContainer
q.Default = make(core.ResourceList)
q.Default[core.ResourceCPU] = cpuLimit.DeepCopy()
q.DefaultRequest = make(core.ResourceList)
q.DefaultRequest[core.ResourceCPU] = cpuLimit.DeepCopy()
q.Max = make(core.ResourceList)
q.Max[core.ResourceCPU] = cpuLimit.DeepCopy()
q.Min = make(core.ResourceList)
q.Min[core.ResourceCPU] = cpuLimit.DeepCopy()
q.MaxLimitRequestRatio = make(core.ResourceList)
q.MaxLimitRequestRatio[core.ResourceCPU] = resource.MustParse("10")
},
func(p *core.PullPolicy, c fuzz.Continue) {
policies := []core.PullPolicy{core.PullAlways, core.PullNever, core.PullIfNotPresent}
*p = policies[c.Rand.Intn(len(policies))]
},
func(rp *core.RestartPolicy, c fuzz.Continue) {
policies := []core.RestartPolicy{core.RestartPolicyAlways, core.RestartPolicyNever, core.RestartPolicyOnFailure}
*rp = policies[c.Rand.Intn(len(policies))]
},
// core.DownwardAPIVolumeFile needs to have a specific func since FieldRef has to be
// defaulted to a version otherwise roundtrip will fail
func(m *core.DownwardAPIVolumeFile, c fuzz.Continue) {
m.Path = c.RandString()
versions := []string{"v1"}
m.FieldRef = &core.ObjectFieldSelector{}
m.FieldRef.APIVersion = versions[c.Rand.Intn(len(versions))]
m.FieldRef.FieldPath = c.RandString()
c.Fuzz(m.Mode)
if m.Mode != nil {
*m.Mode &= 0777
}
},
func(s *core.SecretVolumeSource, c fuzz.Continue) {
c.FuzzNoCustom(s) // fuzz self without calling this function again
if c.RandBool() {
opt := c.RandBool()
s.Optional = &opt
}
// DefaultMode should always be set, it has a default
// value and it is expected to be between 0 and 0777
var mode int32
c.Fuzz(&mode)
mode &= 0777
s.DefaultMode = &mode
},
func(cm *core.ConfigMapVolumeSource, c fuzz.Continue) {
c.FuzzNoCustom(cm) // fuzz self without calling this function again
if c.RandBool() {
opt := c.RandBool()
cm.Optional = &opt
}
// DefaultMode should always be set, it has a default
// value and it is expected to be between 0 and 0777
var mode int32
c.Fuzz(&mode)
mode &= 0777
cm.DefaultMode = &mode
},
func(d *core.DownwardAPIVolumeSource, c fuzz.Continue) {
c.FuzzNoCustom(d) // fuzz self without calling this function again
// DefaultMode should always be set, it has a default
// value and it is expected to be between 0 and 0777
var mode int32
c.Fuzz(&mode)
mode &= 0777
d.DefaultMode = &mode
},
func(s *core.ProjectedVolumeSource, c fuzz.Continue) {
c.FuzzNoCustom(s) // fuzz self without calling this function again
// DefaultMode should always be set, it has a default
// value and it is expected to be between 0 and 0777
var mode int32
c.Fuzz(&mode)
mode &= 0777
s.DefaultMode = &mode
},
func(k *core.KeyToPath, c fuzz.Continue) {
c.FuzzNoCustom(k) // fuzz self without calling this function again
k.Key = c.RandString()
k.Path = c.RandString()
// Mode is not mandatory, but if it is set, it should be
// a value between 0 and 0777
if k.Mode != nil {
*k.Mode &= 0777
}
},
func(vs *core.VolumeSource, c fuzz.Continue) {
// Exactly one of the fields must be set.
v := reflect.ValueOf(vs).Elem()
i := int(c.RandUint64() % uint64(v.NumField()))
t := v.Field(i).Addr()
for v.Field(i).IsNil() {
c.Fuzz(t.Interface())
}
},
func(i *core.ISCSIVolumeSource, c fuzz.Continue) {
i.ISCSIInterface = c.RandString()
if i.ISCSIInterface == "" {
i.ISCSIInterface = "default"
}
},
func(i *core.ISCSIPersistentVolumeSource, c fuzz.Continue) {
i.ISCSIInterface = c.RandString()
if i.ISCSIInterface == "" {
i.ISCSIInterface = "default"
}
},
func(i *core.PersistentVolumeClaimSpec, c fuzz.Continue) {
// Match defaulting in pkg/apis/core/v1/defaults.go.
volumeMode := core.PersistentVolumeMode(c.RandString())
if volumeMode == "" {
volumeMode = core.PersistentVolumeFilesystem
}
i.VolumeMode = &volumeMode
},
func(d *core.DNSPolicy, c fuzz.Continue) {
policies := []core.DNSPolicy{core.DNSClusterFirst, core.DNSDefault}
*d = policies[c.Rand.Intn(len(policies))]
},
func(p *core.Protocol, c fuzz.Continue) {
protocols := []core.Protocol{core.ProtocolTCP, core.ProtocolUDP, core.ProtocolSCTP}
*p = protocols[c.Rand.Intn(len(protocols))]
},
func(p *core.ServiceAffinity, c fuzz.Continue) {
types := []core.ServiceAffinity{core.ServiceAffinityClientIP, core.ServiceAffinityNone}
*p = types[c.Rand.Intn(len(types))]
},
func(p *core.ServiceType, c fuzz.Continue) {
types := []core.ServiceType{core.ServiceTypeClusterIP, core.ServiceTypeNodePort, core.ServiceTypeLoadBalancer}
*p = types[c.Rand.Intn(len(types))]
},
func(p *core.IPFamily, c fuzz.Continue) {
types := []core.IPFamily{core.IPv4Protocol, core.IPv6Protocol}
selected := types[c.Rand.Intn(len(types))]
*p = selected
},
func(p *core.ServiceExternalTrafficPolicyType, c fuzz.Continue) {
types := []core.ServiceExternalTrafficPolicyType{core.ServiceExternalTrafficPolicyTypeCluster, core.ServiceExternalTrafficPolicyTypeLocal}
*p = types[c.Rand.Intn(len(types))]
},
func(p *core.ServiceInternalTrafficPolicyType, c fuzz.Continue) {
types := []core.ServiceInternalTrafficPolicyType{core.ServiceInternalTrafficPolicyCluster, core.ServiceInternalTrafficPolicyLocal}
*p = types[c.Rand.Intn(len(types))]
},
func(ct *core.Container, c fuzz.Continue) {
c.FuzzNoCustom(ct) // fuzz self without calling this function again
ct.TerminationMessagePath = "/" + ct.TerminationMessagePath // Must be non-empty
ct.TerminationMessagePolicy = "File"
},
func(ep *core.EphemeralContainer, c fuzz.Continue) {
c.FuzzNoCustom(ep) // fuzz self without calling this function again
ep.EphemeralContainerCommon.TerminationMessagePath = "/" + ep.TerminationMessagePath // Must be non-empty
ep.EphemeralContainerCommon.TerminationMessagePolicy = "File"
},
func(p *core.Probe, c fuzz.Continue) {
c.FuzzNoCustom(p)
// These fields have default values.
intFieldsWithDefaults := [...]string{"TimeoutSeconds", "PeriodSeconds", "SuccessThreshold", "FailureThreshold"}
v := reflect.ValueOf(p).Elem()
for _, field := range intFieldsWithDefaults {
f := v.FieldByName(field)
if f.Int() == 0 {
f.SetInt(1)
}
}
},
func(ev *core.EnvVar, c fuzz.Continue) {
ev.Name = c.RandString()
if c.RandBool() {
ev.Value = c.RandString()
} else {
ev.ValueFrom = &core.EnvVarSource{}
ev.ValueFrom.FieldRef = &core.ObjectFieldSelector{}
versions := []schema.GroupVersion{
{Group: "admission.k8s.io", Version: "v1alpha1"},
{Group: "apps", Version: "v1beta1"},
{Group: "apps", Version: "v1beta2"},
{Group: "foo", Version: "v42"},
}
ev.ValueFrom.FieldRef.APIVersion = versions[c.Rand.Intn(len(versions))].String()
ev.ValueFrom.FieldRef.FieldPath = c.RandString()
}
},
func(ev *core.EnvFromSource, c fuzz.Continue) {
if c.RandBool() {
ev.Prefix = "p_"
}
if c.RandBool() {
c.Fuzz(&ev.ConfigMapRef)
} else {
c.Fuzz(&ev.SecretRef)
}
},
func(cm *core.ConfigMapEnvSource, c fuzz.Continue) {
c.FuzzNoCustom(cm) // fuzz self without calling this function again
if c.RandBool() {
opt := c.RandBool()
cm.Optional = &opt
}
},
func(s *core.SecretEnvSource, c fuzz.Continue) {
c.FuzzNoCustom(s) // fuzz self without calling this function again
},
func(sc *core.SecurityContext, c fuzz.Continue) {
c.FuzzNoCustom(sc) // fuzz self without calling this function again
if c.RandBool() {
priv := c.RandBool()
sc.Privileged = &priv
}
if c.RandBool() {
sc.Capabilities = &core.Capabilities{
Add: make([]core.Capability, 0),
Drop: make([]core.Capability, 0),
}
c.Fuzz(&sc.Capabilities.Add)
c.Fuzz(&sc.Capabilities.Drop)
}
},
func(s *core.Secret, c fuzz.Continue) {
c.FuzzNoCustom(s) // fuzz self without calling this function again
s.Type = core.SecretTypeOpaque
},
func(r *core.RBDVolumeSource, c fuzz.Continue) {
r.RBDPool = c.RandString()
if r.RBDPool == "" {
r.RBDPool = "rbd"
}
r.RadosUser = c.RandString()
if r.RadosUser == "" {
r.RadosUser = "admin"
}
r.Keyring = c.RandString()
if r.Keyring == "" {
r.Keyring = "/etc/ceph/keyring"
}
},
func(r *core.RBDPersistentVolumeSource, c fuzz.Continue) {
r.RBDPool = c.RandString()
if r.RBDPool == "" {
r.RBDPool = "rbd"
}
r.RadosUser = c.RandString()
if r.RadosUser == "" {
r.RadosUser = "admin"
}
r.Keyring = c.RandString()
if r.Keyring == "" {
r.Keyring = "/etc/ceph/keyring"
}
},
func(obj *core.HostPathVolumeSource, c fuzz.Continue) {
c.FuzzNoCustom(obj)
types := []core.HostPathType{core.HostPathUnset, core.HostPathDirectoryOrCreate, core.HostPathDirectory,
core.HostPathFileOrCreate, core.HostPathFile, core.HostPathSocket, core.HostPathCharDev, core.HostPathBlockDev}
typeVol := types[c.Rand.Intn(len(types))]
if obj.Type == nil {
obj.Type = &typeVol
}
},
func(pv *core.PersistentVolume, c fuzz.Continue) {
c.FuzzNoCustom(pv) // fuzz self without calling this function again
types := []core.PersistentVolumePhase{core.VolumeAvailable, core.VolumePending, core.VolumeBound, core.VolumeReleased, core.VolumeFailed}
pv.Status.Phase = types[c.Rand.Intn(len(types))]
pv.Status.Message = c.RandString()
reclamationPolicies := []core.PersistentVolumeReclaimPolicy{core.PersistentVolumeReclaimRecycle, core.PersistentVolumeReclaimRetain}
pv.Spec.PersistentVolumeReclaimPolicy = reclamationPolicies[c.Rand.Intn(len(reclamationPolicies))]
volumeModes := []core.PersistentVolumeMode{core.PersistentVolumeFilesystem, core.PersistentVolumeBlock}
pv.Spec.VolumeMode = &volumeModes[c.Rand.Intn(len(volumeModes))]
},
func(pvc *core.PersistentVolumeClaim, c fuzz.Continue) {
c.FuzzNoCustom(pvc) // fuzz self without calling this function again
types := []core.PersistentVolumeClaimPhase{core.ClaimBound, core.ClaimPending, core.ClaimLost}
pvc.Status.Phase = types[c.Rand.Intn(len(types))]
volumeModes := []core.PersistentVolumeMode{core.PersistentVolumeFilesystem, core.PersistentVolumeBlock}
pvc.Spec.VolumeMode = &volumeModes[c.Rand.Intn(len(volumeModes))]
},
func(obj *core.AzureDiskVolumeSource, c fuzz.Continue) {
if obj.CachingMode == nil {
obj.CachingMode = new(core.AzureDataDiskCachingMode)
*obj.CachingMode = core.AzureDataDiskCachingReadWrite
}
if obj.Kind == nil {
obj.Kind = new(core.AzureDataDiskKind)
*obj.Kind = core.AzureSharedBlobDisk
}
if obj.FSType == nil {
obj.FSType = new(string)
*obj.FSType = "ext4"
}
if obj.ReadOnly == nil {
obj.ReadOnly = new(bool)
*obj.ReadOnly = false
}
},
func(sio *core.ScaleIOVolumeSource, c fuzz.Continue) {
sio.StorageMode = c.RandString()
if sio.StorageMode == "" {
sio.StorageMode = "ThinProvisioned"
}
sio.FSType = c.RandString()
if sio.FSType == "" {
sio.FSType = "xfs"
}
},
func(sio *core.ScaleIOPersistentVolumeSource, c fuzz.Continue) {
sio.StorageMode = c.RandString()
if sio.StorageMode == "" {
sio.StorageMode = "ThinProvisioned"
}
sio.FSType = c.RandString()
if sio.FSType == "" {
sio.FSType = "xfs"
}
},
func(s *core.NamespaceSpec, c fuzz.Continue) {
s.Finalizers = []core.FinalizerName{core.FinalizerKubernetes}
},
func(s *core.Namespace, c fuzz.Continue) {
c.FuzzNoCustom(s) // fuzz self without calling this function again
// Match name --> label defaulting
if len(s.Name) > 0 {
if s.Labels == nil {
s.Labels = map[string]string{}
}
s.Labels["kubernetes.io/metadata.name"] = s.Name
}
},
func(s *core.NamespaceStatus, c fuzz.Continue) {
s.Phase = core.NamespaceActive
},
func(http *core.HTTPGetAction, c fuzz.Continue) {
c.FuzzNoCustom(http) // fuzz self without calling this function again
http.Path = "/" + http.Path // can't be blank
http.Scheme = "x" + http.Scheme // can't be blank
},
func(ss *core.ServiceSpec, c fuzz.Continue) {
c.FuzzNoCustom(ss) // fuzz self without calling this function again
if len(ss.Ports) == 0 {
// There must be at least 1 port.
ss.Ports = append(ss.Ports, core.ServicePort{})
c.Fuzz(&ss.Ports[0])
}
for i := range ss.Ports {
switch ss.Ports[i].TargetPort.Type {
case intstr.Int:
ss.Ports[i].TargetPort.IntVal = 1 + ss.Ports[i].TargetPort.IntVal%65535 // non-zero
case intstr.String:
ss.Ports[i].TargetPort.StrVal = "x" + ss.Ports[i].TargetPort.StrVal // non-empty
}
}
types := []core.ServiceAffinity{core.ServiceAffinityNone, core.ServiceAffinityClientIP}
ss.SessionAffinity = types[c.Rand.Intn(len(types))]
switch ss.SessionAffinity {
case core.ServiceAffinityClientIP:
timeoutSeconds := int32(c.Rand.Intn(int(core.MaxClientIPServiceAffinitySeconds)))
ss.SessionAffinityConfig = &core.SessionAffinityConfig{
ClientIP: &core.ClientIPConfig{
TimeoutSeconds: &timeoutSeconds,
},
}
case core.ServiceAffinityNone:
ss.SessionAffinityConfig = nil
}
if ss.AllocateLoadBalancerNodePorts == nil {
ss.AllocateLoadBalancerNodePorts = utilpointer.BoolPtr(true)
}
},
func(s *core.NodeStatus, c fuzz.Continue) {
c.FuzzNoCustom(s)
s.Allocatable = s.Capacity
},
func(e *core.Event, c fuzz.Continue) {
c.FuzzNoCustom(e)
e.EventTime = metav1.MicroTime{Time: time.Unix(1, 1000)}
if e.Series != nil {
e.Series.LastObservedTime = metav1.MicroTime{Time: time.Unix(3, 3000)}
}
},
func(j *core.GRPCAction, c fuzz.Continue) {
empty := ""
if j.Service == nil {
j.Service = &empty
}
},
}
}
相关信息
相关文章
kubernetes apiserver_etcd_test 源码
kubernetes apiserver_kms_test 源码
kubernetes append_or_replace_prefixed_line_test 源码
kubernetes audit_policy_test 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
6、 golang
-
7、 openharmony