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helper.go
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/
helper.go
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// Copyright © 2017 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.
package oauth2
import (
"time"
"context"
"github.com/ory/fosite"
)
type HandleHelper struct {
AccessTokenStrategy AccessTokenStrategy
AccessTokenStorage AccessTokenStorage
AccessTokenLifespan time.Duration
}
func (h *HandleHelper) IssueAccessToken(ctx context.Context, requester fosite.AccessRequester, responder fosite.AccessResponder) error {
token, signature, err := h.AccessTokenStrategy.GenerateAccessToken(ctx, requester)
if err != nil {
return err
} else if err := h.AccessTokenStorage.CreateAccessTokenSession(ctx, signature, requester); err != nil {
return err
}
responder.SetAccessToken(token)
responder.SetTokenType("bearer")
responder.SetExpiresIn(getExpiresIn(requester, fosite.AccessToken, h.AccessTokenLifespan, time.Now()))
responder.SetScopes(requester.GetGrantedScopes())
return nil
}
func getExpiresIn(r fosite.Requester, key fosite.TokenType, defaultLifespan time.Duration, now time.Time) time.Duration {
if r.GetSession().GetExpiresAt(key).IsZero() {
return defaultLifespan
}
return time.Duration(r.GetSession().GetExpiresAt(key).UnixNano() - now.UnixNano())
}