/
anonymous_authenticator.go
84 lines (66 loc) · 2.34 KB
/
anonymous_authenticator.go
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// Copyright 2022 Dimitrij Drus <dadrus@gmx.de>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// SPDX-License-Identifier: Apache-2.0
package authenticators
import (
"github.com/rs/zerolog"
"github.com/dadrus/heimdall/internal/heimdall"
"github.com/dadrus/heimdall/internal/rules/mechanisms/subject"
)
// by intention. Used only during application bootstrap.
func init() { // nolint: gochecknoinits
registerTypeFactory(
func(id string, typ string, conf map[string]any) (bool, Authenticator, error) {
if typ != AuthenticatorAnonymous {
return false, nil, nil
}
auth, err := newAnonymousAuthenticator(id, conf)
return true, auth, err
})
}
func newAnonymousAuthenticator(id string, rawConfig map[string]any) (*anonymousAuthenticator, error) {
var auth anonymousAuthenticator
if err := decodeConfig(AuthenticatorAnonymous, rawConfig, &auth); err != nil {
return nil, err
}
if len(auth.Subject) == 0 {
auth.Subject = "anonymous"
}
auth.id = id
return &auth, nil
}
type anonymousAuthenticator struct {
id string
Subject string `mapstructure:"subject"`
}
func (a *anonymousAuthenticator) Execute(ctx heimdall.Context) (*subject.Subject, error) {
logger := zerolog.Ctx(ctx.AppContext())
logger.Debug().Str("_id", a.id).Msg("Authenticating using anonymous authenticator")
return &subject.Subject{ID: a.Subject, Attributes: make(map[string]any)}, nil
}
func (a *anonymousAuthenticator) WithConfig(config map[string]any) (Authenticator, error) {
// this authenticator allows subject to be redefined on the rule level
if len(config) == 0 {
return a, nil
}
return newAnonymousAuthenticator(a.id, config)
}
func (a *anonymousAuthenticator) IsFallbackOnErrorAllowed() bool {
// not allowed, as no error can happen when this authenticator is executed
return false
}
func (a *anonymousAuthenticator) ID() string {
return a.id
}