2018-10-09 23:00:01 +02:00
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/*
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2019-04-09 20:39:42 +02:00
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* MinIO Cloud Storage, (C) 2018 MinIO, Inc.
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2018-10-09 23:00:01 +02:00
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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 validator
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import (
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"errors"
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"fmt"
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"sync"
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)
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// ID - holds identification name authentication validator target.
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type ID string
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// Validator interface describes basic implementation
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// requirements of various authentication providers.
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type Validator interface {
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// Validate is a custom validator function for this provider,
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// each validation is authenticationType or provider specific.
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Validate(token string, duration string) (map[string]interface{}, error)
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// ID returns provider name of this provider.
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ID() ID
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}
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// ErrTokenExpired - error token expired
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var (
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ErrTokenExpired = errors.New("token expired")
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ErrInvalidDuration = errors.New("duration higher than token expiry")
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)
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// Validators - holds list of providers indexed by provider id.
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type Validators struct {
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sync.RWMutex
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providers map[ID]Validator
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}
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// Add - adds unique provider to provider list.
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func (list *Validators) Add(provider Validator) error {
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list.Lock()
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defer list.Unlock()
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if _, ok := list.providers[provider.ID()]; ok {
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return fmt.Errorf("provider %v already exists", provider.ID())
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}
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list.providers[provider.ID()] = provider
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return nil
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}
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// List - returns available provider IDs.
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func (list *Validators) List() []ID {
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list.RLock()
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defer list.RUnlock()
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keys := []ID{}
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for k := range list.providers {
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keys = append(keys, k)
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}
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return keys
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}
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// Get - returns the provider for the given providerID, if not found
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// returns an error.
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func (list *Validators) Get(id ID) (p Validator, err error) {
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list.RLock()
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defer list.RUnlock()
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var ok bool
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if p, ok = list.providers[id]; !ok {
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return nil, fmt.Errorf("provider %v doesn't exist", id)
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}
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return p, nil
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}
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// NewValidators - creates Validators.
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func NewValidators() *Validators {
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return &Validators{providers: make(map[ID]Validator)}
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}
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