redirection / redirection-front.php

redirection-front.php in Redirection 5.0, at redirection-front.php

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1	<?php
2
3	require_once __DIR__ . '/modules/wordpress.php';
4	require_once __DIR__ . '/models/canonical.php';
5	require_once __DIR__ . '/database/database-status.php';
6
7	/**
8	* This powers all of the front-end redirecting
9	*/
10	class Redirection {
11	/**
12	* Instance variable
13	*
14	* @var Redirection\|null
15	*/
16	private static $instance = null;
17
18	/**
19	* WordPress module
20	*
21	* @var WordPress_Module\|null
22	*/
23	private $module = null;
24
25	/**
26	* Singleton
27	*
28	* @return Redirection
29	*/
30	public static function init() {
31	if ( is_null( self::$instance ) ) {
32	self::$instance = new Redirection();
33	}
34
35	return self::$instance;
36	}
37
38	/**
39	* Constructor
40	*/
41	public function __construct() {
42	if ( ! $this->can_start() ) {
43	return;
44	}
45
46	$this->module = Red_Module::get( WordPress_Module::MODULE_ID );
47	if ( $this->module ) {
48	$this->module->start();
49	}
50
51	add_action( Red_Flusher::DELETE_HOOK, array( $this, 'clean_redirection_logs' ) );
52	add_filter( 'redirection_url_target', [ $this, 'transform_url' ] );
53
54	$options = red_get_options();
55	if ( $options['ip_logging'] === 0 ) {
56	add_filter( 'redirection_request_ip', array( $this, 'no_ip_logging' ) );
57	} elseif ( $options['ip_logging'] === 2 ) {
58	add_filter( 'redirection_request_ip', array( $this, 'mask_ip' ) );
59	}
60	}
61
62	public function transform_url( $url ) {
63	$transformer = new Red_Url_Transform();
64
65	return $transformer->transform( $url );
66	}
67
68	/**
69	* Check if Redirection can run. We require the database to be installed.
70	*
71	* @return boolean
72	*/
73	public function can_start() {
74	$status = new Red_Database_Status();
75	if ( $status->needs_installing() ) {
76	return false;
77	}
78
79	return true;
80	}
81
82	/**
83	* Override the IP with an empty value
84	*
85	* @param String $ip IP.
86	* @return String
87	*/
88	public function no_ip_logging( $ip ) {
89	return '';
90	}
91
92	/**
93	* Override the IP with a masked IP
94	*
95	* @param String $ip IP.
96	* @return String
97	*/
98	public function mask_ip( $ip ) {
99	$ip = trim( $ip );
100
101	if ( strpos( $ip, ':' ) !== false ) {
102	// phpcs:ignore
103	$ip = @inet_pton( trim( $ip ) );
104
105	// phpcs:ignore
106	return @inet_ntop( $ip & pack( 'a16', 'ffff:ffff:ffff:ffff::ff00::0000::0000::0000' ) );
107	}
108
109	$parts = [];
110	if ( strlen( $ip ) > 0 ) {
111	$parts = explode( '.', $ip );
112	}
113
114	if ( count( $parts ) > 0 ) {
115	$parts[ count( $parts ) - 1 ] = 0;
116	}
117
118	return implode( '.', $parts );
119	}
120
121	/**
122	* Hook to flush the logs
123	*
124	* @return void
125	*/
126	public function clean_redirection_logs() {
127	$flusher = new Red_Flusher();
128	$flusher->flush();
129	}
130
131	/**
132	* Used for unit tests
133	*
134	* @return WordPress_Module\|null
135	*/
136	public function get_module() {
137	return $this->module;
138	}
139	}
140
141	add_action( 'plugins_loaded', array( 'Redirection', 'init' ) );
142