mirror of
https://github.com/k3s-io/kubernetes.git
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119 lines
3.5 KiB
Go
119 lines
3.5 KiB
Go
/*
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Copyright 2015 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 tokenreview
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import (
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"context"
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"errors"
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"fmt"
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"net/http"
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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/apiserver/pkg/authentication/authenticator"
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genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
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"k8s.io/apiserver/pkg/registry/rest"
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"k8s.io/klog/v2"
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"k8s.io/kubernetes/pkg/apis/authentication"
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)
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var badAuthenticatorAuds = apierrors.NewInternalError(errors.New("error validating audiences"))
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type REST struct {
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tokenAuthenticator authenticator.Request
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apiAudiences []string
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}
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func NewREST(tokenAuthenticator authenticator.Request, apiAudiences []string) *REST {
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return &REST{
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tokenAuthenticator: tokenAuthenticator,
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apiAudiences: apiAudiences,
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}
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}
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func (r *REST) NamespaceScoped() bool {
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return false
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}
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func (r *REST) New() runtime.Object {
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return &authentication.TokenReview{}
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}
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func (r *REST) Create(ctx context.Context, obj runtime.Object, createValidation rest.ValidateObjectFunc, options *metav1.CreateOptions) (runtime.Object, error) {
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tokenReview, ok := obj.(*authentication.TokenReview)
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if !ok {
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return nil, apierrors.NewBadRequest(fmt.Sprintf("not a TokenReview: %#v", obj))
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}
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namespace := genericapirequest.NamespaceValue(ctx)
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if len(namespace) != 0 {
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return nil, apierrors.NewBadRequest(fmt.Sprintf("namespace is not allowed on this type: %v", namespace))
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}
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if len(tokenReview.Spec.Token) == 0 {
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return nil, apierrors.NewBadRequest(fmt.Sprintf("token is required for TokenReview in authentication"))
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}
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if createValidation != nil {
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if err := createValidation(ctx, obj.DeepCopyObject()); err != nil {
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return nil, err
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}
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}
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if r.tokenAuthenticator == nil {
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return tokenReview, nil
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}
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// create a header that contains nothing but the token
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fakeReq := &http.Request{Header: http.Header{}}
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fakeReq.Header.Add("Authorization", "Bearer "+tokenReview.Spec.Token)
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auds := tokenReview.Spec.Audiences
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if len(auds) == 0 {
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auds = r.apiAudiences
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}
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if len(auds) > 0 {
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fakeReq = fakeReq.WithContext(authenticator.WithAudiences(fakeReq.Context(), auds))
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}
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resp, ok, err := r.tokenAuthenticator.AuthenticateRequest(fakeReq)
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tokenReview.Status.Authenticated = ok
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if err != nil {
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tokenReview.Status.Error = err.Error()
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}
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if len(auds) > 0 && resp != nil && len(authenticator.Audiences(auds).Intersect(resp.Audiences)) == 0 {
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klog.Errorf("error validating audience. want=%q got=%q", auds, resp.Audiences)
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return nil, badAuthenticatorAuds
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}
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if resp != nil && resp.User != nil {
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tokenReview.Status.User = authentication.UserInfo{
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Username: resp.User.GetName(),
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UID: resp.User.GetUID(),
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Groups: resp.User.GetGroups(),
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Extra: map[string]authentication.ExtraValue{},
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}
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for k, v := range resp.User.GetExtra() {
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tokenReview.Status.User.Extra[k] = authentication.ExtraValue(v)
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}
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tokenReview.Status.Audiences = resp.Audiences
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}
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return tokenReview, nil
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}
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