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permission.go
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permission.go
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/*
* Copyright the original author or 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 kubernetes
import (
"context"
authorizationv1 "k8s.io/api/authorization/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"github.com/citrusframework/yaks/pkg/client"
)
// CheckPermission can be used to check if the current user/service-account is allowed to execute a given operation
// in the cluster.
// E.g. checkPermission(client, olmv1alpha1.GroupName, "clusterserviceversions", namespace, "yaks", "get")
//
func CheckPermission(ctx context.Context, client client.Client, group, resource, namespace, name, verb string) (bool, error) {
sarReview := &authorizationv1.SelfSubjectAccessReview{
Spec: authorizationv1.SelfSubjectAccessReviewSpec{
ResourceAttributes: &authorizationv1.ResourceAttributes{
Group: group,
Resource: resource,
Namespace: namespace,
Name: name,
Verb: verb,
},
},
}
if sar, err := client.AuthorizationV1().SelfSubjectAccessReviews().Create(ctx, sarReview, metav1.CreateOptions{}); err == nil {
return sar.Status.Allowed, nil
} else if !k8serrors.IsForbidden(err) {
return false, err
}
return false, nil
}