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105 lines
3.9 KiB
Go
105 lines
3.9 KiB
Go
/*
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Copyright 2025 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 resource
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import (
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"context"
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"fmt"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/validation/field"
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v1 "k8s.io/client-go/kubernetes/typed/core/v1"
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"k8s.io/kubernetes/pkg/apis/resource"
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)
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// AuthorizedForAdmin checks if the request is authorized to get admin access to devices
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// based on namespace label
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func AuthorizedForAdmin(ctx context.Context, deviceRequests []resource.DeviceRequest, namespaceName string, nsClient v1.NamespaceInterface) field.ErrorList {
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var allErrs field.ErrorList
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adminRequested := false
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var adminAccessPath *field.Path
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// no need to check old request since spec is immutable
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for i := range deviceRequests {
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// AdminAccess can not be set on subrequests, so it can
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// only be used when the Exactly field is set.
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if deviceRequests[i].Exactly == nil {
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continue
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}
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value := deviceRequests[i].Exactly.AdminAccess
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if value != nil && *value {
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adminRequested = true
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adminAccessPath = field.NewPath("spec", "devices", "requests").Index(i).Child("adminAccess")
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break
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}
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}
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if !adminRequested {
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// No need to validate unless admin access is requested
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return allErrs
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}
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// Retrieve the namespace object from the store
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ns, err := nsClient.Get(ctx, namespaceName, metav1.GetOptions{})
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if err != nil {
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return append(allErrs, field.InternalError(adminAccessPath, fmt.Errorf("could not retrieve namespace to verify admin access: %w", err)))
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}
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if ns.Labels[resource.DRAAdminNamespaceLabelKey] != "true" {
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return append(allErrs, field.Forbidden(adminAccessPath, fmt.Sprintf("admin access to devices requires the `%s: true` label on the containing namespace", resource.DRAAdminNamespaceLabelKey)))
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}
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return allErrs
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}
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// AuthorizedForAdminStatus checks if the request status is authorized to get admin access to devices
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// based on namespace label
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func AuthorizedForAdminStatus(ctx context.Context, newAllocationResult, oldAllocationResult []resource.DeviceRequestAllocationResult, namespaceName string, nsClient v1.NamespaceInterface) field.ErrorList {
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var allErrs field.ErrorList
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var adminAccessPath *field.Path
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if wasGranted, _ := adminRequested(oldAllocationResult); wasGranted {
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// No need to validate if old status has admin access granted, since status.Allocation is immutable
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return allErrs
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}
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isRequested, adminAccessPath := adminRequested(newAllocationResult)
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if !isRequested {
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// No need to validate unless admin access is requested
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return allErrs
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}
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// Retrieve the namespace object from the store
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ns, err := nsClient.Get(ctx, namespaceName, metav1.GetOptions{})
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if err != nil {
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return append(allErrs, field.InternalError(adminAccessPath, fmt.Errorf("could not retrieve namespace to verify admin access: %w", err)))
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}
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if ns.Labels[resource.DRAAdminNamespaceLabelKey] != "true" {
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return append(allErrs, field.Forbidden(adminAccessPath, fmt.Sprintf("admin access to devices requires the `%s: true` label on the containing namespace", resource.DRAAdminNamespaceLabelKey)))
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}
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return allErrs
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}
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func adminRequested(deviceRequestResults []resource.DeviceRequestAllocationResult) (bool, *field.Path) {
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for i := range deviceRequestResults {
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value := deviceRequestResults[i].AdminAccess
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if value != nil && *value {
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return true, field.NewPath("status", "allocation", "devices", "results").Index(i).Child("adminAccess")
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}
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}
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return false, nil
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}
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