55c2d6bbbb
Added basic interface for authorizer implementations. Added default "authorize everything" and "authorize nothing implementations. Added authorization check immediately after authentication check. Added an integration test of authorization at the HTTP level of abstraction.
69 lines
2.3 KiB
Go
69 lines
2.3 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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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 apiserver
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import (
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"errors"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/auth/authorizer"
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)
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// Attributes implements authorizer.Attributes interface.
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type Attributes struct {
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// TODO: add fields and methods when authorizer.Attributes is completed.
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}
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// alwaysAllowAuthorizer is an implementation of authorizer.Attributes
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// which always says yes to an authorization request.
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// It is useful in tests and when using kubernetes in an open manner.
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type alwaysAllowAuthorizer struct{}
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func (alwaysAllowAuthorizer) Authorize(a authorizer.Attributes) (err error) {
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return nil
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}
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// alwaysDenyAuthorizer is an implementation of authorizer.Attributes
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// which always says no to an authorization request.
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// It is useful in unit tests to force an operation to be forbidden.
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type alwaysDenyAuthorizer struct{}
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func (alwaysDenyAuthorizer) Authorize(a authorizer.Attributes) (err error) {
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return errors.New("Everything is forbidden.")
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}
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const (
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ModeAlwaysAllow string = "AlwaysAllow"
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ModeAlwaysDeny string = "AlwaysDeny"
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)
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// Keep this list in sync with constant list above.
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var AuthorizationModeChoices = []string{ModeAlwaysAllow, ModeAlwaysDeny}
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// NewAuthorizerFromAuthorizationConfig returns the right sort of authorizer.Authorizer
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// based on the authorizationMode xor an error. authorizationMode should be one of AuthorizationModeChoices.
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func NewAuthorizerFromAuthorizationConfig(authorizationMode string) (authorizer.Authorizer, error) {
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// Keep cases in sync with constant list above.
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switch authorizationMode {
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case ModeAlwaysAllow:
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return new(alwaysAllowAuthorizer), nil
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case ModeAlwaysDeny:
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return new(alwaysDenyAuthorizer), nil
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default:
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return nil, errors.New("Unknown authorization mode")
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}
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}
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