k8s.io/kubernetes@v1.29.3/pkg/apis/rbac/v1alpha1/conversion.go (about)

     1  /*
     2  Copyright 2017 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 v1alpha1
    18  
    19  import (
    20  	rbacv1alpha1 "k8s.io/api/rbac/v1alpha1"
    21  	"k8s.io/apimachinery/pkg/conversion"
    22  	"k8s.io/apimachinery/pkg/runtime/schema"
    23  	api "k8s.io/kubernetes/pkg/apis/rbac"
    24  )
    25  
    26  // allAuthenticated matches k8s.io/apiserver/pkg/authentication/user.AllAuthenticated,
    27  // but we don't want an client library (which must include types), depending on a server library
    28  const allAuthenticated = "system:authenticated"
    29  
    30  func Convert_v1alpha1_Subject_To_rbac_Subject(in *rbacv1alpha1.Subject, out *api.Subject, s conversion.Scope) error {
    31  	if err := autoConvert_v1alpha1_Subject_To_rbac_Subject(in, out, s); err != nil {
    32  		return err
    33  	}
    34  
    35  	// specifically set the APIGroup for the three subjects recognized in v1alpha1
    36  	switch {
    37  	case in.Kind == rbacv1alpha1.ServiceAccountKind:
    38  		out.APIGroup = ""
    39  	case in.Kind == rbacv1alpha1.UserKind:
    40  		out.APIGroup = GroupName
    41  	case in.Kind == rbacv1alpha1.GroupKind:
    42  		out.APIGroup = GroupName
    43  	default:
    44  		// For unrecognized kinds, use the group portion of the APIVersion if we can get it
    45  		if gv, err := schema.ParseGroupVersion(in.APIVersion); err == nil {
    46  			out.APIGroup = gv.Group
    47  		}
    48  	}
    49  
    50  	// User * in v1alpha1 will only match all authenticated users
    51  	// This is only for compatibility with old RBAC bindings
    52  	// Special treatment for * should not be included in v1beta1
    53  	if out.Kind == rbacv1alpha1.UserKind && out.APIGroup == GroupName && out.Name == "*" {
    54  		out.Kind = rbacv1alpha1.GroupKind
    55  		out.Name = allAuthenticated
    56  	}
    57  
    58  	return nil
    59  }
    60  
    61  func Convert_rbac_Subject_To_v1alpha1_Subject(in *api.Subject, out *rbacv1alpha1.Subject, s conversion.Scope) error {
    62  	if err := autoConvert_rbac_Subject_To_v1alpha1_Subject(in, out, s); err != nil {
    63  		return err
    64  	}
    65  
    66  	switch {
    67  	case in.Kind == rbacv1alpha1.ServiceAccountKind && in.APIGroup == "":
    68  		// Make service accounts v1
    69  		out.APIVersion = "v1"
    70  	case in.Kind == rbacv1alpha1.UserKind && in.APIGroup == GroupName:
    71  		// users in the rbac API group get v1alpha
    72  		out.APIVersion = SchemeGroupVersion.String()
    73  	case in.Kind == rbacv1alpha1.GroupKind && in.APIGroup == GroupName:
    74  		// groups in the rbac API group get v1alpha
    75  		out.APIVersion = SchemeGroupVersion.String()
    76  	default:
    77  		// otherwise, they get an unspecified version of a group
    78  		out.APIVersion = schema.GroupVersion{Group: in.APIGroup}.String()
    79  	}
    80  
    81  	return nil
    82  }