validation.go

Documentation: k8s.io/kubernetes/pkg/apis/authorization/validation

     1  /*
     2  Copyright 2015 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package validation
    18  
    19  import (
    20  	apiequality "k8s.io/apimachinery/pkg/api/equality"
    21  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    22  	"k8s.io/apimachinery/pkg/util/validation/field"
    23  	authorizationapi "k8s.io/kubernetes/pkg/apis/authorization"
    24  )
    25  
    26  // ValidateSubjectAccessReviewSpec validates a SubjectAccessReviewSpec and returns an
    27  // ErrorList with any errors.
    28  func ValidateSubjectAccessReviewSpec(spec authorizationapi.SubjectAccessReviewSpec, fldPath *field.Path) field.ErrorList {
    29  	allErrs := field.ErrorList{}
    30  	if spec.ResourceAttributes != nil && spec.NonResourceAttributes != nil {
    31  		allErrs = append(allErrs, field.Invalid(fldPath.Child("nonResourceAttributes"), spec.NonResourceAttributes, `cannot be specified in combination with resourceAttributes`))
    32  	}
    33  	if spec.ResourceAttributes == nil && spec.NonResourceAttributes == nil {
    34  		allErrs = append(allErrs, field.Invalid(fldPath.Child("resourceAttributes"), spec.NonResourceAttributes, `exactly one of nonResourceAttributes or resourceAttributes must be specified`))
    35  	}
    36  	if len(spec.User) == 0 && len(spec.Groups) == 0 {
    37  		allErrs = append(allErrs, field.Invalid(fldPath.Child("user"), spec.User, `at least one of user or group must be specified`))
    38  	}
    39  
    40  	return allErrs
    41  }
    42  
    43  // ValidateSelfSubjectAccessReviewSpec validates a SelfSubjectAccessReviewSpec and returns an
    44  // ErrorList with any errors.
    45  func ValidateSelfSubjectAccessReviewSpec(spec authorizationapi.SelfSubjectAccessReviewSpec, fldPath *field.Path) field.ErrorList {
    46  	allErrs := field.ErrorList{}
    47  	if spec.ResourceAttributes != nil && spec.NonResourceAttributes != nil {
    48  		allErrs = append(allErrs, field.Invalid(fldPath.Child("nonResourceAttributes"), spec.NonResourceAttributes, `cannot be specified in combination with resourceAttributes`))
    49  	}
    50  	if spec.ResourceAttributes == nil && spec.NonResourceAttributes == nil {
    51  		allErrs = append(allErrs, field.Invalid(fldPath.Child("resourceAttributes"), spec.NonResourceAttributes, `exactly one of nonResourceAttributes or resourceAttributes must be specified`))
    52  	}
    53  
    54  	return allErrs
    55  }
    56  
    57  // ValidateSubjectAccessReview validates a SubjectAccessReview and returns an
    58  // ErrorList with any errors.
    59  func ValidateSubjectAccessReview(sar *authorizationapi.SubjectAccessReview) field.ErrorList {
    60  	allErrs := ValidateSubjectAccessReviewSpec(sar.Spec, field.NewPath("spec"))
    61  	objectMetaShallowCopy := sar.ObjectMeta
    62  	objectMetaShallowCopy.ManagedFields = nil
    63  	if !apiequality.Semantic.DeepEqual(metav1.ObjectMeta{}, objectMetaShallowCopy) {
    64  		allErrs = append(allErrs, field.Invalid(field.NewPath("metadata"), sar.ObjectMeta, `must be empty`))
    65  	}
    66  	return allErrs
    67  }
    68  
    69  // ValidateSelfSubjectAccessReview validates a SelfSubjectAccessReview and returns an
    70  // ErrorList with any errors.
    71  func ValidateSelfSubjectAccessReview(sar *authorizationapi.SelfSubjectAccessReview) field.ErrorList {
    72  	allErrs := ValidateSelfSubjectAccessReviewSpec(sar.Spec, field.NewPath("spec"))
    73  	objectMetaShallowCopy := sar.ObjectMeta
    74  	objectMetaShallowCopy.ManagedFields = nil
    75  	if !apiequality.Semantic.DeepEqual(metav1.ObjectMeta{}, objectMetaShallowCopy) {
    76  		allErrs = append(allErrs, field.Invalid(field.NewPath("metadata"), sar.ObjectMeta, `must be empty`))
    77  	}
    78  	return allErrs
    79  }
    80  
    81  // ValidateLocalSubjectAccessReview validates a LocalSubjectAccessReview and returns an
    82  // ErrorList with any errors.
    83  func ValidateLocalSubjectAccessReview(sar *authorizationapi.LocalSubjectAccessReview) field.ErrorList {
    84  	allErrs := ValidateSubjectAccessReviewSpec(sar.Spec, field.NewPath("spec"))
    85  
    86  	objectMetaShallowCopy := sar.ObjectMeta
    87  	objectMetaShallowCopy.Namespace = ""
    88  	objectMetaShallowCopy.ManagedFields = nil
    89  	if !apiequality.Semantic.DeepEqual(metav1.ObjectMeta{}, objectMetaShallowCopy) {
    90  		allErrs = append(allErrs, field.Invalid(field.NewPath("metadata"), sar.ObjectMeta, `must be empty except for namespace`))
    91  	}
    92  
    93  	if sar.Spec.ResourceAttributes != nil && sar.Spec.ResourceAttributes.Namespace != sar.Namespace {
    94  		allErrs = append(allErrs, field.Invalid(field.NewPath("spec.resourceAttributes.namespace"), sar.Spec.ResourceAttributes.Namespace, `must match metadata.namespace`))
    95  	}
    96  	if sar.Spec.NonResourceAttributes != nil {
    97  		allErrs = append(allErrs, field.Invalid(field.NewPath("spec.nonResourceAttributes"), sar.Spec.NonResourceAttributes, `disallowed on this kind of request`))
    98  	}
    99  
   100  	return allErrs
   101  }
   102
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