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webhook: forbid use internal protocols
Signed-off-by: 刘硕 <liushuo@zetyun.com>
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刘硕
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Feb 23, 2024
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,78 @@ | ||
/* | ||
Copyright 2022 The Koordinator 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. | ||
*/ | ||
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package validating | ||
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import ( | ||
"context" | ||
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admissionv1 "k8s.io/api/admission/v1" | ||
corev1 "k8s.io/api/core/v1" | ||
"k8s.io/apimachinery/pkg/util/validation/field" | ||
"sigs.k8s.io/controller-runtime/pkg/webhook/admission" | ||
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"github.com/koordinator-sh/koordinator/apis/extension" | ||
"github.com/koordinator-sh/koordinator/pkg/util/reservation" | ||
) | ||
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func (h *PodValidatingHandler) clusterReservationValidatingPod(ctx context.Context, req admission.Request) (bool, string, error) { | ||
newPod := &corev1.Pod{} | ||
var allErrs field.ErrorList | ||
switch req.Operation { | ||
case admissionv1.Create: | ||
if err := h.Decoder.DecodeRaw(req.Object, newPod); err != nil { | ||
return false, "", err | ||
} | ||
case admissionv1.Update: | ||
oldPod := &corev1.Pod{} | ||
if err := h.Decoder.DecodeRaw(req.OldObject, oldPod); err != nil { | ||
return false, "", err | ||
} | ||
if err := h.Decoder.DecodeRaw(req.Object, newPod); err != nil { | ||
return false, "", err | ||
} | ||
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} | ||
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allErrs = append(allErrs, forbidSpecialAnnotations(newPod)...) | ||
err := allErrs.ToAggregate() | ||
allowed := true | ||
reason := "" | ||
if err != nil { | ||
allowed = false | ||
reason = err.Error() | ||
} | ||
return allowed, reason, err | ||
} | ||
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var forbidAnnotations = []string{ | ||
extension.AnnotationReservationAllocated, | ||
reservation.AnnotationReservePod, | ||
} | ||
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func forbidSpecialAnnotations(pod *corev1.Pod) field.ErrorList { | ||
if pod.Annotations == nil { | ||
return nil | ||
} | ||
errorList := field.ErrorList{} | ||
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for _, annotation := range forbidAnnotations { | ||
if _, ok := pod.Annotations[annotation]; ok { | ||
errorList = append(errorList, field.Forbidden(field.NewPath("annotations", extension.AnnotationReservationAllocated), "cannot set in annotations")) | ||
} | ||
} | ||
return errorList | ||
} |
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@@ -0,0 +1,105 @@ | ||
/* | ||
Copyright 2022 The Koordinator 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. | ||
*/ | ||
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package validating | ||
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import ( | ||
"context" | ||
"testing" | ||
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admissionv1 "k8s.io/api/admission/v1" | ||
corev1 "k8s.io/api/core/v1" | ||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
"k8s.io/apimachinery/pkg/runtime" | ||
"k8s.io/client-go/kubernetes/scheme" | ||
"sigs.k8s.io/controller-runtime/pkg/client/fake" | ||
"sigs.k8s.io/controller-runtime/pkg/webhook/admission" | ||
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configv1alpha1 "github.com/koordinator-sh/koordinator/apis/config/v1alpha1" | ||
"github.com/koordinator-sh/koordinator/apis/extension" | ||
"github.com/koordinator-sh/koordinator/pkg/util" | ||
) | ||
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func init() { | ||
_ = configv1alpha1.AddToScheme(scheme.Scheme) | ||
} | ||
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func TestClusterReservationValidatingPod(t *testing.T) { | ||
tests := []struct { | ||
name string | ||
operation admissionv1.Operation | ||
oldPod *corev1.Pod | ||
newPod *corev1.Pod | ||
wantAllowed bool | ||
wantReason string | ||
wantErr bool | ||
}{ | ||
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{ | ||
name: "forbidden resources annotations", | ||
operation: admissionv1.Create, | ||
newPod: &corev1.Pod{ | ||
ObjectMeta: metav1.ObjectMeta{ | ||
Annotations: map[string]string{ | ||
extension.AnnotationReservationAllocated: "", | ||
}, | ||
}, | ||
}, | ||
wantErr: true, | ||
wantAllowed: false, | ||
wantReason: `annotations.scheduling.koordinator.sh/reservation-allocated: Forbidden: cannot set in annotations`, | ||
}, | ||
} | ||
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for _, tt := range tests { | ||
t.Run(tt.name, func(t *testing.T) { | ||
client := fake.NewClientBuilder().Build() | ||
decoder, _ := admission.NewDecoder(scheme.Scheme) | ||
h := &PodValidatingHandler{ | ||
Client: client, | ||
Decoder: decoder, | ||
} | ||
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var objRawExt, oldObjRawExt runtime.RawExtension | ||
if tt.newPod != nil { | ||
objRawExt = runtime.RawExtension{ | ||
Raw: []byte(util.DumpJSON(tt.newPod)), | ||
} | ||
} | ||
if tt.oldPod != nil { | ||
oldObjRawExt = runtime.RawExtension{ | ||
Raw: []byte(util.DumpJSON(tt.oldPod)), | ||
} | ||
} | ||
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req := newAdmissionRequest(tt.operation, objRawExt, oldObjRawExt, "pods") | ||
gotAllowed, gotReason, err := h.clusterReservationValidatingPod(context.TODO(), admission.Request{AdmissionRequest: req}) | ||
if (err != nil) != tt.wantErr { | ||
t.Errorf("clusterReservationValidatingPod() error = %v, wantErr %v", err, tt.wantErr) | ||
return | ||
} | ||
if gotAllowed != tt.wantAllowed { | ||
t.Errorf("clusterReservationValidatingPod() gotAllowed = %v, want %v", gotAllowed, tt.wantAllowed) | ||
} | ||
if gotReason != tt.wantReason { | ||
t.Errorf("clusterReservationValidatingPod():\n"+ | ||
"gotReason = %v,\n"+ | ||
"want = %v", gotReason, tt.wantReason) | ||
t.Errorf("got=%v, want=%v", len(gotReason), len(tt.wantReason)) | ||
} | ||
}) | ||
} | ||
} |