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flow_authorize_code_auth.go
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flow_authorize_code_auth.go
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// Copyright © 2024 Ory Corp
// SPDX-License-Identifier: Apache-2.0
package oauth2
import (
"context"
"net/url"
"strings"
"time"
"github.com/ory/x/errorsx"
"github.com/ory/fosite"
)
var _ fosite.AuthorizeEndpointHandler = (*AuthorizeExplicitGrantHandler)(nil)
var _ fosite.TokenEndpointHandler = (*AuthorizeExplicitGrantHandler)(nil)
// AuthorizeExplicitGrantHandler 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
TokenRevocationStorage TokenRevocationStorage
Config interface {
fosite.AuthorizeCodeLifespanProvider
fosite.AccessTokenLifespanProvider
fosite.RefreshTokenLifespanProvider
fosite.ScopeStrategyProvider
fosite.AudienceStrategyProvider
fosite.RedirectSecureCheckerProvider
fosite.RefreshTokenScopesProvider
fosite.OmitRedirectScopeParamProvider
fosite.SanitationAllowedProvider
}
}
func (c *AuthorizeExplicitGrantHandler) secureChecker(ctx context.Context) func(context.Context, *url.URL) bool {
if c.Config.GetRedirectSecureChecker(ctx) == nil {
return fosite.IsRedirectURISecure
}
return c.Config.GetRedirectSecureChecker(ctx)
}
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().ExactOne("code") {
return nil
}
ar.SetDefaultResponseMode(fosite.ResponseModeQuery)
// Disabled because this is already handled at the authorize_request_handler
// if !ar.GetClient().GetResponseTypes().Has("code") {
// return errorsx.WithStack(fosite.ErrInvalidGrant)
// }
if !c.secureChecker(ctx)(ctx, ar.GetRedirectURI()) {
return errorsx.WithStack(fosite.ErrInvalidRequest.WithHint("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.Config.GetScopeStrategy(ctx)(client.GetScopes(), scope) {
return errorsx.WithStack(fosite.ErrInvalidScope.WithHintf("The OAuth 2.0 Client is not allowed to request scope '%s'.", scope))
}
}
if err := c.Config.GetAudienceStrategy(ctx)(client.GetAudience(), ar.GetRequestedAudience()); err != nil {
return err
}
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 errorsx.WithStack(fosite.ErrServerError.WithWrap(err).WithDebug(err.Error()))
}
ar.GetSession().SetExpiresAt(fosite.AuthorizeCode, time.Now().UTC().Add(c.Config.GetAuthorizeCodeLifespan(ctx)))
if err := c.CoreStorage.CreateAuthorizeCodeSession(ctx, signature, ar.Sanitize(c.GetSanitationWhiteList(ctx))); err != nil {
return errorsx.WithStack(fosite.ErrServerError.WithWrap(err).WithDebug(err.Error()))
}
resp.AddParameter("code", code)
resp.AddParameter("state", ar.GetState())
if !c.Config.GetOmitRedirectScopeParam(ctx) {
resp.AddParameter("scope", strings.Join(ar.GetGrantedScopes(), " "))
}
ar.SetResponseTypeHandled("code")
return nil
}
func (c *AuthorizeExplicitGrantHandler) GetSanitationWhiteList(ctx context.Context) []string {
if allowedList := c.Config.GetSanitationWhiteList(ctx); len(allowedList) > 0 {
return allowedList
}
return []string{"code", "redirect_uri"}
}