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flow_resource_owner.go
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/
flow_resource_owner.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 (
"fmt"
"time"
"context"
"github.com/ory/fosite"
"github.com/pkg/errors"
)
type ResourceOwnerPasswordCredentialsGrantHandler struct {
// ResourceOwnerPasswordCredentialsGrantStorage is used to persist session data across requests.
ResourceOwnerPasswordCredentialsGrantStorage ResourceOwnerPasswordCredentialsGrantStorage
RefreshTokenStrategy RefreshTokenStrategy
ScopeStrategy fosite.ScopeStrategy
*HandleHelper
}
// HandleTokenEndpointRequest implements https://tools.ietf.org/html/rfc6749#section-4.3.2
func (c *ResourceOwnerPasswordCredentialsGrantHandler) HandleTokenEndpointRequest(ctx context.Context, request fosite.AccessRequester) error {
// grant_type REQUIRED.
// Value MUST be set to "password".
if !request.GetGrantTypes().Exact("password") {
return errors.WithStack(fosite.ErrUnknownRequest)
}
if !request.GetClient().GetGrantTypes().Has("password") {
return errors.WithStack(fosite.ErrInvalidGrant.WithDebug("The client is not allowed to use grant type password"))
}
username := request.GetRequestForm().Get("username")
password := request.GetRequestForm().Get("password")
if username == "" || password == "" {
return errors.WithStack(fosite.ErrInvalidRequest.WithDebug("Username or password missing"))
} else if err := c.ResourceOwnerPasswordCredentialsGrantStorage.Authenticate(ctx, username, password); errors.Cause(err) == fosite.ErrNotFound {
return errors.WithStack(fosite.ErrInvalidRequest.WithDebug(err.Error()))
} else if err != nil {
return errors.WithStack(fosite.ErrServerError.WithDebug(err.Error()))
}
client := request.GetClient()
for _, scope := range request.GetRequestedScopes() {
if !c.ScopeStrategy(client.GetScopes(), scope) {
return errors.WithStack(fosite.ErrInvalidScope.WithDebug(fmt.Sprintf("The client is not allowed to request scope %s", scope)))
}
}
// Credentials must not be passed around, potentially leaking to the database!
delete(request.GetRequestForm(), "password")
request.GetSession().SetExpiresAt(fosite.AccessToken, time.Now().Add(c.AccessTokenLifespan))
return nil
}
// PopulateTokenEndpointResponse implements https://tools.ietf.org/html/rfc6749#section-4.3.3
func (c *ResourceOwnerPasswordCredentialsGrantHandler) PopulateTokenEndpointResponse(ctx context.Context, requester fosite.AccessRequester, responder fosite.AccessResponder) error {
if !requester.GetGrantTypes().Exact("password") {
return errors.WithStack(fosite.ErrUnknownRequest)
}
var refresh, refreshSignature string
if requester.GetGrantedScopes().Has("offline") {
var err error
refresh, refreshSignature, err = c.RefreshTokenStrategy.GenerateRefreshToken(ctx, requester)
if err != nil {
return errors.WithStack(fosite.ErrServerError.WithDebug(err.Error()))
} else if err := c.ResourceOwnerPasswordCredentialsGrantStorage.CreateRefreshTokenSession(ctx, refreshSignature, requester); err != nil {
return errors.WithStack(fosite.ErrServerError.WithDebug(err.Error()))
}
}
if err := c.IssueAccessToken(ctx, requester, responder); err != nil {
return err
}
if refresh != "" {
responder.SetExtra("refresh_token", refresh)
}
return nil
}