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flow_authorize_code_auth.go
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flow_authorize_code_auth.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 (
"strings"
"time"
"fmt"
"context"
"github.com/ory/fosite"
"github.com/pkg/errors"
)
// AuthorizeExplicitGrantTypeHandler is a response handler for the Authorize Code grant using the explicit grant type
// as defined in https://tools.ietf.org/html/rfc6749#section-4.1
type AuthorizeExplicitGrantHandler struct {
AccessTokenStrategy AccessTokenStrategy
RefreshTokenStrategy RefreshTokenStrategy
AuthorizeCodeStrategy AuthorizeCodeStrategy
CoreStorage CoreStorage
// AuthCodeLifespan defines the lifetime of an authorize code.
AuthCodeLifespan time.Duration
// AccessTokenLifespan defines the lifetime of an access token.
AccessTokenLifespan time.Duration
ScopeStrategy fosite.ScopeStrategy
}
func (c *AuthorizeExplicitGrantHandler) HandleAuthorizeEndpointRequest(ctx context.Context, ar fosite.AuthorizeRequester, resp fosite.AuthorizeResponder) error {
// This let's us define multiple response types, for example open id connect's id_token
if !ar.GetResponseTypes().Exact("code") {
return nil
}
if !ar.GetClient().GetResponseTypes().Has("code") {
return errors.WithStack(fosite.ErrInvalidGrant)
}
if !fosite.IsRedirectURISecure(ar.GetRedirectURI()) {
return errors.Wrap(fosite.ErrInvalidRequest, "Redirect URL is using an insecure protocol, http is only allowed for hosts with suffix `localhost`, for example: http://myapp.localhost/")
}
client := ar.GetClient()
for _, scope := range ar.GetRequestedScopes() {
if !c.ScopeStrategy(client.GetScopes(), scope) {
return errors.Wrap(fosite.ErrInvalidScope, fmt.Sprintf("The client is not allowed to request scope %s", scope))
}
}
return c.IssueAuthorizeCode(ctx, ar, resp)
}
func (c *AuthorizeExplicitGrantHandler) IssueAuthorizeCode(ctx context.Context, ar fosite.AuthorizeRequester, resp fosite.AuthorizeResponder) error {
code, signature, err := c.AuthorizeCodeStrategy.GenerateAuthorizeCode(ctx, ar)
if err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
ar.GetSession().SetExpiresAt(fosite.AuthorizeCode, time.Now().Add(c.AuthCodeLifespan))
if err := c.CoreStorage.CreateAuthorizeCodeSession(ctx, signature, ar); err != nil {
return errors.Wrap(fosite.ErrServerError, err.Error())
}
resp.AddQuery("code", code)
resp.AddQuery("state", ar.GetState())
resp.AddQuery("scope", strings.Join(ar.GetGrantedScopes(), " "))
ar.SetResponseTypeHandled("code")
return nil
}