233 lines
4.5 KiB
PHP
233 lines
4.5 KiB
PHP
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<?php
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if ( ! defined( 'ABSPATH' ) ) {
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exit; // Exit if accessed directly
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}
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if ( ! class_exists( 'ACF_Ajax' ) ) :
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class ACF_Ajax {
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/** @var string The AJAX action name. */
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var $action = '';
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/** @var array The $_REQUEST data. */
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var $request;
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/** @var bool Prevents access for non-logged in users. */
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var $public = false;
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/**
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* __construct
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*
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* Sets up the class functionality.
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*
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* @date 31/7/18
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* @since 5.7.2
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*
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* @param void
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* @return void
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*/
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function __construct() {
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$this->initialize();
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$this->add_actions();
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}
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/**
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* has
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*
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* Returns true if the request has data for the given key.
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*
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* @date 31/7/18
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* @since 5.7.2
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*
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* @param string $key The data key.
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* @return boolean
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*/
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function has( $key = '' ) {
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return isset( $this->request[ $key ] );
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}
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/**
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* get
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*
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* Returns request data for the given key.
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*
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* @date 31/7/18
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* @since 5.7.2
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*
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* @param string $key The data key.
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* @return mixed
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*/
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function get( $key = '' ) {
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return isset( $this->request[ $key ] ) ? $this->request[ $key ] : null;
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}
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/**
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* Sets request data for the given key.
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*
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* @date 31/7/18
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* @since 5.7.2
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*
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* @param string $key The data key.
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* @param mixed $value The data value.
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* @return ACF_Ajax
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*/
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function set( $key = '', $value = null ) {
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$this->request[ $key ] = $value;
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return $this;
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}
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/**
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* initialize
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*
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* Allows easy access to modifying properties without changing constructor.
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*
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* @date 31/7/18
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* @since 5.7.2
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*
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* @param void
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* @return void
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*/
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function initialize() {
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/* do nothing */
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}
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/**
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* add_actions
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*
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* Adds the ajax actions for this response.
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*
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* @date 31/7/18
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* @since 5.7.2
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*
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* @param void
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* @return void
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*/
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function add_actions() {
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// add action for logged-in users
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add_action( "wp_ajax_{$this->action}", array( $this, 'request' ) );
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// add action for non logged-in users
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if ( $this->public ) {
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add_action( "wp_ajax_nopriv_{$this->action}", array( $this, 'request' ) );
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}
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}
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/**
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* request
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*
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* Callback for ajax action. Sets up properties and calls the get_response() function.
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*
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* @date 1/8/18
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* @since 5.7.2
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*
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* @param void
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* @return void
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*/
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function request() {
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// Store data for has() and get() functions.
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$this->request = wp_unslash( $_REQUEST );
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// Verify request and handle error.
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$error = $this->verify_request( $this->request );
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if ( is_wp_error( $error ) ) {
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$this->send( $error );
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}
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// Send response.
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$this->send( $this->get_response( $this->request ) );
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}
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/**
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* Verifies the request.
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*
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* @date 9/3/20
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* @since 5.8.8
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*
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* @param array $request The request args.
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* @return (bool|WP_Error) True on success, WP_Error on fail.
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*/
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function verify_request( $request ) {
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// Verify nonce.
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if ( ! acf_verify_ajax() ) {
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return new WP_Error( 'acf_invalid_nonce', __( 'Invalid nonce.', 'acf' ), array( 'status' => 404 ) );
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}
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return true;
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}
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/**
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* get_response
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*
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* Returns the response data to sent back.
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*
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* @date 31/7/18
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* @since 5.7.2
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*
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* @param array $request The request args.
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* @return mixed The response data or WP_Error.
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*/
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function get_response( $request ) {
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return true;
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}
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/**
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* send
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*
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* Sends back JSON based on the $response as either success or failure.
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*
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* @date 31/7/18
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* @since 5.7.2
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*
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* @param mixed $response The response to send back.
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* @return void
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*/
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function send( $response ) {
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// Return error.
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if ( is_wp_error( $response ) ) {
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$this->send_error( $response );
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// Return success.
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} else {
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wp_send_json( $response );
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}
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}
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/**
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* Sends a JSON response for the given WP_Error object.
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*
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* @date 8/3/20
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* @since 5.8.8
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*
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* @param WP_Error error The error object.
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* @return void
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*/
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function send_error( $error ) {
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// Get error status
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$error_data = $error->get_error_data();
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if ( is_array( $error_data ) && isset( $error_data['status'] ) ) {
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$status_code = $error_data['status'];
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} else {
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$status_code = 500;
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}
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wp_send_json(
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array(
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'code' => $error->get_error_code(),
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'message' => $error->get_error_message(),
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'data' => $error->get_error_data(),
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),
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$status_code
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);
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}
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}
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endif; // class_exists check
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