k8s.io/apiserver@v0.31.1/pkg/authentication/group/token_group_adder.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 group
    18  
    19  import (
    20  	"context"
    21  
    22  	"k8s.io/apiserver/pkg/authentication/authenticator"
    23  	"k8s.io/apiserver/pkg/authentication/user"
    24  )
    25  
    26  // TokenGroupAdder adds groups to an authenticated user.Info
    27  type TokenGroupAdder struct {
    28  	// Authenticator is delegated to make the authentication decision
    29  	Authenticator authenticator.Token
    30  	// Groups are additional groups to add to the user.Info from a successful authentication
    31  	Groups []string
    32  }
    33  
    34  // NewTokenGroupAdder wraps a token authenticator, and adds the specified groups to the returned user when authentication succeeds
    35  func NewTokenGroupAdder(auth authenticator.Token, groups []string) authenticator.Token {
    36  	return &TokenGroupAdder{auth, groups}
    37  }
    38  
    39  func (g *TokenGroupAdder) AuthenticateToken(ctx context.Context, token string) (*authenticator.Response, bool, error) {
    40  	r, ok, err := g.Authenticator.AuthenticateToken(ctx, token)
    41  	if err != nil || !ok {
    42  		return nil, ok, err
    43  	}
    44  
    45  	newGroups := make([]string, 0, len(r.User.GetGroups())+len(g.Groups))
    46  	newGroups = append(newGroups, r.User.GetGroups()...)
    47  	newGroups = append(newGroups, g.Groups...)
    48  
    49  	ret := *r // shallow copy
    50  	ret.User = &user.DefaultInfo{
    51  		Name:   r.User.GetName(),
    52  		UID:    r.User.GetUID(),
    53  		Groups: newGroups,
    54  		Extra:  r.User.GetExtra(),
    55  	}
    56  	return &ret, true, nil
    57  }