k8s.io/apiserver@v0.31.1/pkg/authentication/group/authenticated_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  	"net/http"
    21  
    22  	"k8s.io/apiserver/pkg/authentication/authenticator"
    23  	"k8s.io/apiserver/pkg/authentication/user"
    24  )
    25  
    26  // AuthenticatedGroupAdder adds system:authenticated group when appropriate
    27  type AuthenticatedGroupAdder struct {
    28  	// Authenticator is delegated to make the authentication decision
    29  	Authenticator authenticator.Request
    30  }
    31  
    32  // NewAuthenticatedGroupAdder wraps a request authenticator, and adds the system:authenticated group when appropriate.
    33  // Authentication must succeed, the user must not be system:anonymous, the groups system:authenticated or system:unauthenticated must
    34  // not be present
    35  func NewAuthenticatedGroupAdder(auth authenticator.Request) authenticator.Request {
    36  	return &AuthenticatedGroupAdder{auth}
    37  }
    38  
    39  func (g *AuthenticatedGroupAdder) AuthenticateRequest(req *http.Request) (*authenticator.Response, bool, error) {
    40  	r, ok, err := g.Authenticator.AuthenticateRequest(req)
    41  	if err != nil || !ok {
    42  		return nil, ok, err
    43  	}
    44  
    45  	if r.User.GetName() == user.Anonymous {
    46  		return r, true, nil
    47  	}
    48  	for _, group := range r.User.GetGroups() {
    49  		if group == user.AllAuthenticated || group == user.AllUnauthenticated {
    50  			return r, true, nil
    51  		}
    52  	}
    53  
    54  	newGroups := make([]string, 0, len(r.User.GetGroups())+1)
    55  	newGroups = append(newGroups, r.User.GetGroups()...)
    56  	newGroups = append(newGroups, user.AllAuthenticated)
    57  
    58  	ret := *r // shallow copy
    59  	ret.User = &user.DefaultInfo{
    60  		Name:   r.User.GetName(),
    61  		UID:    r.User.GetUID(),
    62  		Groups: newGroups,
    63  		Extra:  r.User.GetExtra(),
    64  	}
    65  	return &ret, true, nil
    66  }