facebook-for-wordpress.php — Meta pixel for WordPress 4.1.4

official-facebook-pixel / facebook-for-wordpress.php

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facebook-for-wordpress.php

145 lines

1	<?php
2	// phpcs:ignoreFile
3	/**
4	* Plugin Name: Meta pixel for WordPress
5	* Plugin URI: https://www.facebook.com/business/help/881403525362441
6	* Description: <strong><em>*ATTENTION: After upgrade the plugin may be deactivated due to a known issue, to workaround please refresh this page and activate plugin.*</em></strong> The Facebook pixel is an analytics tool that helps you measure the effectiveness of your advertising. You can use the Facebook pixel to understand the actions people are taking on your website and reach audiences you care about.
7	* Author: Facebook
8	* Author URI: https://www.facebook.com/
9	* Version: 4.1.4
10	* Text Domain: official-facebook-pixel
11	*
12	* @package FacebookPixelPlugin
13	*/
14
15	/*
16	* Copyright (C) 2017-present, Facebook, Inc.
17	*
18	* This program is free software; you can redistribute it and/or modify
19	* it under the terms of the GNU General Public License as published by
20	* the Free Software Foundation; version 2 of the License.
21	* This program is distributed in the hope that it will be useful,
22	* but WITHOUT ANY WARRANTY; without even the implied warranty of
23	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24	* GNU General Public License for more details.
25	*/
26
27	namespace FacebookPixelPlugin;
28
29	defined( 'ABSPATH' ) \|\| die( 'Direct access not allowed' );
30
31	require_once plugin_dir_path( __FILE__ ) . 'vendor/autoload.php';
32
33	use FacebookPixelPlugin\Core\FacebookPixel;
34	use FacebookPixelPlugin\Core\FacebookPluginConfig;
35	use FacebookPixelPlugin\Core\FacebookPluginUtils;
36	use FacebookPixelPlugin\Core\FacebookWordpressOpenBridge;
37	use FacebookPixelPlugin\Core\FacebookWordpressOptions;
38	use FacebookPixelPlugin\Core\FacebookWordpressPixelInjection;
39	use FacebookPixelPlugin\Core\FacebookWordpressSettingsPage;
40	use FacebookPixelPlugin\Core\FacebookWordpressSettingsRecorder;
41	use FacebookPixelPlugin\Core\ServerEventAsyncTask;
42
43	/**
44	* FacebookForWordpress root class.
45	*/
46	class FacebookForWordpress {
47	/**
48	* Plugin constructor. Initializes the plugin options, loads the translation files,
49	* sets up the Facebook pixel, sets up the pixel injection, and sets up the settings
50	* page. Also starts the server event async task.
51	*/
52	public function __construct() {
53	FacebookWordpressOptions::initialize();
54
55	load_plugin_textdomain(
56	FacebookPluginConfig::TEXT_DOMAIN,
57	false,
58	dirname( plugin_basename( __FILE__ ) ) . '/languages/'
59	);
60
61	$options = FacebookWordpressOptions::get_options();
62	FacebookPixel::initialize( FacebookWordpressOptions::get_pixel_id() );
63
64	add_action( 'init', array( $this, 'register_pixel_injection' ), 0 );
65	add_action( 'parse_request', array( $this, 'handle_events_request' ), 0 );
66
67	$this->register_settings_page();
68
69	if ( false === get_option( 'is_wordpress_com_hosted' ) ) {
70	update_option( 'is_wordpress_com_hosted', FacebookWordpressOptions::is_wordpress_com_hosted() );
71	}
72
73	new ServerEventAsyncTask();
74	}
75
76
77	/**
78	* Registers the pixel injection. This method instantiates the
79	* FacebookWordpressPixelInjection and calls its inject method.
80	*
81	* The inject method is responsible for adding the necessary hooks to
82	* inject the Facebook pixel code into the footer of the WordPress page.
83	*/
84	public function register_pixel_injection() {
85	$injection_obj = new FacebookWordpressPixelInjection();
86	$injection_obj->inject();
87	}
88
89
90	/**
91	* Registers the settings page for the Facebook for WordPress plugin. This method
92	* instantiates the FacebookWordpressSettingsPage and FacebookWordpressSettingsRecorder
93	* objects. The settings page object is responsible for adding the necessary hooks
94	* and rendering the settings page. The settings recorder object is responsible for
95	* recording data about the user's settings and sending it to Meta.
96	*/
97	public function register_settings_page() {
98	if ( is_admin() ) {
99	$plugin_name = plugin_basename( __FILE__ );
100	new FacebookWordpressSettingsPage( $plugin_name );
101	( new FacebookWordpressSettingsRecorder() )->init();
102	}
103	}
104
105
106	/**
107	* Handles incoming events requests by checking if the request URI
108	* ends with the configured open bridge path and if the request
109	* method is POST. If both conditions are met, it decodes the JSON
110	* payload from the request body and forwards it to the open bridge
111	* request handler. Additionally, it sets CORS headers to allow
112	* cross-origin requests if the origin is specified in the request
113	* headers.
114	*/
115	public function handle_events_request() {
116	if ( isset( $_SERVER['REQUEST_URI'] ) ) {
117	$request_uri = sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) );
118
119	if (
120	FacebookPluginUtils::ends_with(
121	$request_uri,
122	FacebookPluginConfig::OPEN_BRIDGE_PATH
123	) &&
124	isset( $_SERVER['REQUEST_METHOD'] ) && 'POST' === $_SERVER['REQUEST_METHOD']
125	) {
126	$data = json_decode( file_get_contents( 'php://input' ), true );
127	if ( ! is_null( $data ) ) {
128	FacebookWordpressOpenBridge::get_instance()->handle_open_bridge_req(
129	$data
130	);
131	}
132	if ( isset( $_SERVER['HTTP_ORIGIN'] ) ) {
133	$origin = wp_kses( wp_unslash( $_SERVER['HTTP_ORIGIN'] ), array() );
134	header( "Access-Control-Allow-Origin: $origin" );
135	header( 'Access-Control-Allow-Credentials: true' );
136	header( 'Access-Control-Max-Age: 86400' );
137	}
138	exit();
139	}
140	}
141	}
142	}
143
144	new FacebookForWordpress();
145