func (c *AuthorizeExplicitGrantHandler) HandleAuthorizeEndpointRequest(ctx context.Context, req *http.Request, 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.Wrap(fosite.ErrInvalidGrant, "") } if !fosite.IsRedirectURISecure(ar.GetRedirectURI()) { return errors.Wrap(fosite.ErrInvalidRequest, "") } 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, req, ar, resp) }