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strategy_hmacsha.go
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strategy_hmacsha.go
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/*
* Copyright © 2015-2018 Aeneas Rekkas <aeneas+oss@aeneas.io>
*
* 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.
*
* @author Aeneas Rekkas <aeneas+oss@aeneas.io>
* @copyright 2015-2018 Aeneas Rekkas <aeneas+oss@aeneas.io>
* @license Apache-2.0
*
*/
package oauth2
import (
"context"
"time"
"github.com/pkg/errors"
"github.com/kalrashubham49/fosite"
enigma "github.com/kalrashubham49/fosite/token/hmac"
)
type HMACSHAStrategy struct {
Enigma *enigma.HMACStrategy
AccessTokenLifespan time.Duration
RefreshTokenLifespan time.Duration
AuthorizeCodeLifespan time.Duration
}
func (h HMACSHAStrategy) AccessTokenSignature(token string) string {
return h.Enigma.Signature(token)
}
func (h HMACSHAStrategy) RefreshTokenSignature(token string) string {
return h.Enigma.Signature(token)
}
func (h HMACSHAStrategy) AuthorizeCodeSignature(token string) string {
return h.Enigma.Signature(token)
}
func (h HMACSHAStrategy) GenerateAccessToken(_ context.Context, _ fosite.Requester) (token string, signature string, err error) {
return h.Enigma.Generate()
}
func (h HMACSHAStrategy) ValidateAccessToken(_ context.Context, r fosite.Requester, token string) (err error) {
err = h.Enigma.Validate(token)
if err != nil { // Validation Error
return err
}
// Check for Expiry
isExpired := h.Enigma.Valid(token)
if isExpired == true {
return errors.New("Token Expired")
}
var exp = r.GetSession().GetExpiresAt(fosite.AccessToken)
if exp.IsZero() && r.GetRequestedAt().Add(h.AccessTokenLifespan).Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Access token expired at \"%s\".", r.GetRequestedAt().Add(h.AccessTokenLifespan)))
}
if !exp.IsZero() && exp.Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Access token expired at \"%s\".", exp))
}
return nil
}
func (h HMACSHAStrategy) GenerateRefreshToken(_ context.Context, _ fosite.Requester) (token string, signature string, err error) {
return h.Enigma.Generate()
}
func (h HMACSHAStrategy) ValidateRefreshToken(_ context.Context, r fosite.Requester, token string) (err error) {
var exp = r.GetSession().GetExpiresAt(fosite.RefreshToken)
if exp.IsZero() {
// Unlimited lifetime
return h.Enigma.Validate(token)
}
if !exp.IsZero() && exp.Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Refresh token expired at \"%s\".", exp))
}
return h.Enigma.Validate(token)
}
func (h HMACSHAStrategy) GenerateAuthorizeCode(_ context.Context, _ fosite.Requester) (token string, signature string, err error) {
return h.Enigma.Generate()
}
func (h HMACSHAStrategy) ValidateAuthorizeCode(_ context.Context, r fosite.Requester, token string) (err error) {
var exp = r.GetSession().GetExpiresAt(fosite.AuthorizeCode)
if exp.IsZero() && r.GetRequestedAt().Add(h.AuthorizeCodeLifespan).Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Authorize code expired at \"%s\".", r.GetRequestedAt().Add(h.AuthorizeCodeLifespan)))
}
if !exp.IsZero() && exp.Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Authorize code expired at \"%s\".", exp))
}
return h.Enigma.Validate(token)
}
func (h HMACSHAStrategy) AuthorizeHmacSignatute(token string) string {
return h.Enigma.Signature(token)
}
func (h HMACSHAStrategy) GenerateAuthorizeHmacCode(ctx context.Context, requester fosite.Requester) (token string, signature string, err error) {
return h.Enigma.Generate()
}
func (h HMACSHAStrategy) ValidateAuthorizeHmacCode(ctx context.Context, requester fosite.Requester, token string) (err error) {
var exp = requester.GetSession().GetExpiresAt(fosite.AuthorizeCode)
if exp.IsZero() && requester.GetRequestedAt().Add(h.AuthorizeCodeLifespan).Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Authorize code expired at \"%s\".", requester.GetRequestedAt().Add(h.AuthorizeCodeLifespan)))
}
if !exp.IsZero() && exp.Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Authorize code expired at \"%s\".", exp))
}
return h.Enigma.Validate(token)
}
type HMACSHAStrategyWithoutSigning struct {
Enigma *enigma.OldHMACStrategy
AccessTokenLifespan time.Duration
RefreshTokenLifespan time.Duration
AuthorizeCodeLifespan time.Duration
}
func (h HMACSHAStrategyWithoutSigning) AccessTokenSignature(token string) string {
return h.Enigma.Signature(token)
}
func (h HMACSHAStrategyWithoutSigning) RefreshTokenSignature(token string) string {
return h.Enigma.Signature(token)
}
func (h HMACSHAStrategyWithoutSigning) AuthorizeCodeSignature(token string) string {
return h.Enigma.Signature(token)
}
func (h HMACSHAStrategyWithoutSigning) GenerateAccessToken(_ context.Context, _ fosite.Requester) (token string, signature string, err error) {
return h.Enigma.Generate()
}
func (h HMACSHAStrategyWithoutSigning) ValidateAccessToken(_ context.Context, r fosite.Requester, token string) (err error) {
err = h.Enigma.Validate(token)
if err != nil { // Validation Error
return err
}
// Check for Expiry
var exp = r.GetSession().GetExpiresAt(fosite.AccessToken)
if exp.IsZero() && r.GetRequestedAt().Add(h.AccessTokenLifespan).Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Access token expired at \"%s\".", r.GetRequestedAt().Add(h.AccessTokenLifespan)))
}
if !exp.IsZero() && exp.Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Access token expired at \"%s\".", exp))
}
return nil
}
func (h HMACSHAStrategyWithoutSigning) GenerateRefreshToken(_ context.Context, _ fosite.Requester) (token string, signature string, err error) {
return h.Enigma.Generate()
}
func (h HMACSHAStrategyWithoutSigning) ValidateRefreshToken(_ context.Context, r fosite.Requester, token string) (err error) {
var exp = r.GetSession().GetExpiresAt(fosite.RefreshToken)
if exp.IsZero() {
// Unlimited lifetime
return h.Enigma.Validate(token)
}
if !exp.IsZero() && exp.Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Refresh token expired at \"%s\".", exp))
}
return h.Enigma.Validate(token)
}
func (h HMACSHAStrategyWithoutSigning) GenerateAuthorizeCode(_ context.Context, _ fosite.Requester) (token string, signature string, err error) {
return h.Enigma.Generate()
}
func (h HMACSHAStrategyWithoutSigning) ValidateAuthorizeCode(_ context.Context, r fosite.Requester, token string) (err error) {
var exp = r.GetSession().GetExpiresAt(fosite.AuthorizeCode)
if exp.IsZero() && r.GetRequestedAt().Add(h.AuthorizeCodeLifespan).Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Authorize code expired at \"%s\".", r.GetRequestedAt().Add(h.AuthorizeCodeLifespan)))
}
if !exp.IsZero() && exp.Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Authorize code expired at \"%s\".", exp))
}
return h.Enigma.Validate(token)
}
func (h HMACSHAStrategyWithoutSigning) AuthorizeHmacSignatute(token string) string {
return h.Enigma.Signature(token)
}
func (h HMACSHAStrategyWithoutSigning) GenerateAuthorizeHmacCode(ctx context.Context, requester fosite.Requester) (token string, signature string, err error) {
return h.Enigma.Generate()
}
func (h HMACSHAStrategyWithoutSigning) ValidateAuthorizeHmacCode(ctx context.Context, requester fosite.Requester, token string) (err error) {
var exp = requester.GetSession().GetExpiresAt(fosite.AuthorizeCode)
if exp.IsZero() && requester.GetRequestedAt().Add(h.AuthorizeCodeLifespan).Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Authorize code expired at \"%s\".", requester.GetRequestedAt().Add(h.AuthorizeCodeLifespan)))
}
if !exp.IsZero() && exp.Before(time.Now().UTC()) {
return errors.WithStack(fosite.ErrTokenExpired.WithHintf("Authorize code expired at \"%s\".", exp))
}
return h.Enigma.Validate(token)
}