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Editing File: /home/maglabs/elitebureaux/wp-content/plugins/ninja-forms/includes/AJAX/REST/Controller.php

<?php if ( ! defined( 'ABSPATH' ) ) exit;
use NinjaForms\Includes\Admin\RestControllerSafeList;

/**
 * A controller extensions for mapping REST requests to an admin-ajax action.
 */
abstract class NF_AJAX_REST_Controller extends NF_Abstracts_Controller
{
    /**
     * The name of the admin-ajax action.
     * @var string
     */
    protected $action;

/**
     * Setup admin-ajax to access the endpoint router.
     */
    public function __construct()
    {
        if( $this->action ) {
            /**
             * The function that handles these actions are located in the
             * classes that extend this class. The action is usually of the type 'get', 'post', or 'delete'
             * These files inlcude:
             *  NF_AJAX_REST_BatchProcess
             *  NF_AJAX_REST_Forms
             *  NF_AJAX_REST_NewFormTemplates
             *  NF_AJAX_REST_RequiredUpdate
             *
             * And any other class that extends this class(NF_AJAX_REST_Controller)
             */
            add_action('wp_ajax_' . $this->action, array($this, 'route'));
        }
    }

/**
     * Map admin-ajax requests to the corresponding method callback.
     */
    public function route()
    {
        register_shutdown_function( array( $this, 'shutdown' ) );

$method = strtolower( $_SERVER['REQUEST_METHOD'] );

/*
         * Request Method Override
         * Allows for a POST request to function as another Request Method
         *   by passing a `method_override` value as a request parameter.
         * For example, some servers do not support the DELETE request method.
         */
        if( 'post' == $method and isset( $_REQUEST[ 'method_override' ] ) ){
            $method = sanitize_text_field( $_REQUEST[ 'method_override' ] );

if(!RestControllerSafeList::isClassMethodAllowed(static::class,$method)){

$this->_errors[] = esc_html__( 'Requested method override is not allowed', 'ninja-forms' );
                $this->_respond();
            }
        }

if( ! method_exists( $this, $method ) ){
            $this->_errors[] = esc_html__( 'Endpoint does not exist.', 'ninja-forms' );
            $this->_respond();
        }

/**
         * This call get the $_REQUEST info for the call(post, get, etc.)
         * being called.
         */
        $request_data = $this->get_request_data();

try {
            $data = $this->$method($request_data);
            $this->_respond( $data );
        } catch( Exception $e ) {
            $this->_errors[] = $e->getMessage();
        }
        $this->_respond();
    }

/**
     * [OVERRIDE THIS] Get sanitized request data for use in method callbacks.
     * @return array
     */
    protected function get_request_data()
    {
        // This section intentionally left blank.

/*
         * [Example] FORM ID
         */
//        if( isset( $_REQUEST[ 'form_id' ] ) && $_REQUEST[ 'form_id' ] ){
//            $request_data[ 'form_id' ] = absint( $_REQUEST[ 'form_id' ] );
//        }

return array();
    }

/**
     * Returns debugging data when a fatal error is triggered.
     */
    public function shutdown()
    {
        $error = error_get_last();
        if( $error !== NULL && in_array( $error[ 'type' ], array( E_ERROR, E_CORE_ERROR, E_COMPILE_ERROR, E_USER_ERROR ) ) ) {

$this->_errors[ 'form' ][ 'last' ] = esc_html__( 'The server encountered an error during processing.', 'ninja-forms' );

if( current_user_can( 'manage_options' ) && isset( $error[ 'message' ] ) ){
                $this->_errors[ 'form' ][ 'last_admin' ] = '<pre>' . $error[ 'message' ] . '</pre>';
            }

$this->_errors[ 'last' ] = $error;
            $this->_respond();
        }
    }
}

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