mirror of
https://github.com/k3s-io/kubernetes.git
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348 lines
10 KiB
Go
348 lines
10 KiB
Go
/*
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Copyright 2016 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 auth
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import (
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"context"
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"errors"
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"net/http"
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"strings"
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"testing"
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authorizationapi "k8s.io/api/authorization/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apiserver/pkg/authentication/authenticator"
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"k8s.io/apiserver/pkg/authentication/user"
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"k8s.io/apiserver/pkg/authorization/authorizer"
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clientset "k8s.io/client-go/kubernetes"
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restclient "k8s.io/client-go/rest"
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api "k8s.io/kubernetes/pkg/apis/core"
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"k8s.io/kubernetes/test/integration/framework"
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)
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// Inject into control plane an authorizer that uses user info.
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// TODO(etune): remove this test once a more comprehensive built-in authorizer is implemented.
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type sarAuthorizer struct{}
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func (sarAuthorizer) Authorize(ctx context.Context, a authorizer.Attributes) (authorizer.Decision, string, error) {
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if a.GetUser().GetName() == "dave" {
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return authorizer.DecisionNoOpinion, "no", errors.New("I'm sorry, Dave")
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}
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return authorizer.DecisionAllow, "you're not dave", nil
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}
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func alwaysAlice(req *http.Request) (*authenticator.Response, bool, error) {
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return &authenticator.Response{
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User: &user.DefaultInfo{
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Name: "alice",
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},
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}, true, nil
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}
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func TestSubjectAccessReview(t *testing.T) {
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controlPlaneConfig := framework.NewIntegrationTestControlPlaneConfig()
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controlPlaneConfig.GenericConfig.Authentication.Authenticator = authenticator.RequestFunc(alwaysAlice)
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controlPlaneConfig.GenericConfig.Authorization.Authorizer = sarAuthorizer{}
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_, s, closeFn := framework.RunAnAPIServer(controlPlaneConfig)
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defer closeFn()
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clientset := clientset.NewForConfigOrDie(&restclient.Config{Host: s.URL})
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tests := []struct {
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name string
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sar *authorizationapi.SubjectAccessReview
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expectedError string
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expectedStatus authorizationapi.SubjectAccessReviewStatus
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}{
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{
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name: "simple allow",
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sar: &authorizationapi.SubjectAccessReview{
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Spec: authorizationapi.SubjectAccessReviewSpec{
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ResourceAttributes: &authorizationapi.ResourceAttributes{
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Verb: "list",
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Group: api.GroupName,
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Version: "v1",
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Resource: "pods",
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},
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User: "alice",
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},
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},
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expectedStatus: authorizationapi.SubjectAccessReviewStatus{
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Allowed: true,
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Reason: "you're not dave",
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},
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},
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{
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name: "simple deny",
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sar: &authorizationapi.SubjectAccessReview{
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Spec: authorizationapi.SubjectAccessReviewSpec{
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ResourceAttributes: &authorizationapi.ResourceAttributes{
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Verb: "list",
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Group: api.GroupName,
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Version: "v1",
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Resource: "pods",
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},
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User: "dave",
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},
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},
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expectedStatus: authorizationapi.SubjectAccessReviewStatus{
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Allowed: false,
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Reason: "no",
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EvaluationError: "I'm sorry, Dave",
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},
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},
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{
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name: "simple error",
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sar: &authorizationapi.SubjectAccessReview{
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Spec: authorizationapi.SubjectAccessReviewSpec{
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ResourceAttributes: &authorizationapi.ResourceAttributes{
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Verb: "list",
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Group: api.GroupName,
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Version: "v1",
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Resource: "pods",
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},
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},
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},
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expectedError: "at least one of user or group must be specified",
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},
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}
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for _, test := range tests {
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response, err := clientset.AuthorizationV1().SubjectAccessReviews().Create(context.TODO(), test.sar, metav1.CreateOptions{})
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switch {
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case err == nil && len(test.expectedError) == 0:
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case err != nil && strings.Contains(err.Error(), test.expectedError):
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continue
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case err != nil && len(test.expectedError) != 0:
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t.Errorf("%s: unexpected error: %v", test.name, err)
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continue
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default:
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t.Errorf("%s: expected %v, got %v", test.name, test.expectedError, err)
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continue
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}
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if response.Status != test.expectedStatus {
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t.Errorf("%s: expected %v, got %v", test.name, test.expectedStatus, response.Status)
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continue
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}
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}
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}
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func TestSelfSubjectAccessReview(t *testing.T) {
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username := "alice"
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controlPlaneConfig := framework.NewIntegrationTestControlPlaneConfig()
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controlPlaneConfig.GenericConfig.Authentication.Authenticator = authenticator.RequestFunc(func(req *http.Request) (*authenticator.Response, bool, error) {
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return &authenticator.Response{
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User: &user.DefaultInfo{Name: username},
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}, true, nil
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})
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controlPlaneConfig.GenericConfig.Authorization.Authorizer = sarAuthorizer{}
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_, s, closeFn := framework.RunAnAPIServer(controlPlaneConfig)
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defer closeFn()
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clientset := clientset.NewForConfigOrDie(&restclient.Config{Host: s.URL})
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tests := []struct {
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name string
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username string
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sar *authorizationapi.SelfSubjectAccessReview
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expectedError string
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expectedStatus authorizationapi.SubjectAccessReviewStatus
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}{
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{
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name: "simple allow",
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username: "alice",
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sar: &authorizationapi.SelfSubjectAccessReview{
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Spec: authorizationapi.SelfSubjectAccessReviewSpec{
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ResourceAttributes: &authorizationapi.ResourceAttributes{
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Verb: "list",
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Group: api.GroupName,
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Version: "v1",
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Resource: "pods",
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},
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},
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},
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expectedStatus: authorizationapi.SubjectAccessReviewStatus{
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Allowed: true,
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Reason: "you're not dave",
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},
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},
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{
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name: "simple deny",
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username: "dave",
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sar: &authorizationapi.SelfSubjectAccessReview{
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Spec: authorizationapi.SelfSubjectAccessReviewSpec{
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ResourceAttributes: &authorizationapi.ResourceAttributes{
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Verb: "list",
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Group: api.GroupName,
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Version: "v1",
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Resource: "pods",
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},
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},
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},
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expectedStatus: authorizationapi.SubjectAccessReviewStatus{
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Allowed: false,
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Reason: "no",
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EvaluationError: "I'm sorry, Dave",
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},
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},
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}
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for _, test := range tests {
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username = test.username
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response, err := clientset.AuthorizationV1().SelfSubjectAccessReviews().Create(context.TODO(), test.sar, metav1.CreateOptions{})
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switch {
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case err == nil && len(test.expectedError) == 0:
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case err != nil && strings.Contains(err.Error(), test.expectedError):
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continue
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case err != nil && len(test.expectedError) != 0:
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t.Errorf("%s: unexpected error: %v", test.name, err)
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continue
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default:
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t.Errorf("%s: expected %v, got %v", test.name, test.expectedError, err)
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continue
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}
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if response.Status != test.expectedStatus {
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t.Errorf("%s: expected %v, got %v", test.name, test.expectedStatus, response.Status)
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continue
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}
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}
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}
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func TestLocalSubjectAccessReview(t *testing.T) {
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controlPlaneConfig := framework.NewIntegrationTestControlPlaneConfig()
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controlPlaneConfig.GenericConfig.Authentication.Authenticator = authenticator.RequestFunc(alwaysAlice)
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controlPlaneConfig.GenericConfig.Authorization.Authorizer = sarAuthorizer{}
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_, s, closeFn := framework.RunAnAPIServer(controlPlaneConfig)
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defer closeFn()
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clientset := clientset.NewForConfigOrDie(&restclient.Config{Host: s.URL})
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tests := []struct {
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name string
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namespace string
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sar *authorizationapi.LocalSubjectAccessReview
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expectedError string
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expectedStatus authorizationapi.SubjectAccessReviewStatus
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}{
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{
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name: "simple allow",
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namespace: "foo",
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sar: &authorizationapi.LocalSubjectAccessReview{
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ObjectMeta: metav1.ObjectMeta{Namespace: "foo"},
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Spec: authorizationapi.SubjectAccessReviewSpec{
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ResourceAttributes: &authorizationapi.ResourceAttributes{
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Verb: "list",
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Group: api.GroupName,
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Version: "v1",
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Resource: "pods",
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Namespace: "foo",
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},
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User: "alice",
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},
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},
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expectedStatus: authorizationapi.SubjectAccessReviewStatus{
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Allowed: true,
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Reason: "you're not dave",
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},
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},
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{
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name: "simple deny",
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namespace: "foo",
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sar: &authorizationapi.LocalSubjectAccessReview{
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ObjectMeta: metav1.ObjectMeta{Namespace: "foo"},
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Spec: authorizationapi.SubjectAccessReviewSpec{
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ResourceAttributes: &authorizationapi.ResourceAttributes{
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Verb: "list",
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Group: api.GroupName,
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Version: "v1",
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Resource: "pods",
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Namespace: "foo",
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},
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User: "dave",
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},
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},
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expectedStatus: authorizationapi.SubjectAccessReviewStatus{
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Allowed: false,
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Reason: "no",
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EvaluationError: "I'm sorry, Dave",
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},
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},
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{
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name: "conflicting namespace",
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namespace: "foo",
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sar: &authorizationapi.LocalSubjectAccessReview{
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ObjectMeta: metav1.ObjectMeta{Namespace: "foo"},
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Spec: authorizationapi.SubjectAccessReviewSpec{
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ResourceAttributes: &authorizationapi.ResourceAttributes{
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Verb: "list",
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Group: api.GroupName,
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Version: "v1",
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Resource: "pods",
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Namespace: "bar",
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},
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User: "dave",
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},
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},
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expectedError: "must match metadata.namespace",
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},
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{
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name: "missing namespace",
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namespace: "foo",
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sar: &authorizationapi.LocalSubjectAccessReview{
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ObjectMeta: metav1.ObjectMeta{Namespace: "foo"},
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Spec: authorizationapi.SubjectAccessReviewSpec{
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ResourceAttributes: &authorizationapi.ResourceAttributes{
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Verb: "list",
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Group: api.GroupName,
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Version: "v1",
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Resource: "pods",
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},
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User: "dave",
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},
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},
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expectedError: "must match metadata.namespace",
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},
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}
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for _, test := range tests {
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response, err := clientset.AuthorizationV1().LocalSubjectAccessReviews(test.namespace).Create(context.TODO(), test.sar, metav1.CreateOptions{})
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switch {
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case err == nil && len(test.expectedError) == 0:
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case err != nil && strings.Contains(err.Error(), test.expectedError):
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continue
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case err != nil && len(test.expectedError) != 0:
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t.Errorf("%s: unexpected error: %v", test.name, err)
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continue
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default:
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t.Errorf("%s: expected %v, got %v", test.name, test.expectedError, err)
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continue
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}
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if response.Status != test.expectedStatus {
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t.Errorf("%s: expected %#v, got %#v", test.name, test.expectedStatus, response.Status)
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continue
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}
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}
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}
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