redirection / modules / wordpress.php

wordpress.php in Redirection 2.4.2, at modules/wordpress.php

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1	<?php
2
3	class WordPress_Module extends Red_Module {
4	const MODULE_ID = 1;
5
6	private $matched = false;
7
8	public function get_id() {
9	return self::MODULE_ID;
10	}
11
12	public function can_edit_config() {
13	return false;
14	}
15
16	public function render_config() {
17	}
18
19	public function get_config() {
20	return array();
21	}
22
23	public function start() {
24	// Setup the various filters and actions that allow Redirection to happen
25	add_action( 'init', array( &$this, 'init' ) );
26	add_action( 'send_headers', array( &$this, 'send_headers' ) );
27	add_filter( 'permalink_redirect_skip', array( &$this, 'permalink_redirect_skip' ) );
28	add_filter( 'wp_redirect', array( &$this, 'wp_redirect' ), 1, 2 );
29	add_action( 'template_redirect', array( &$this, 'template_redirect' ) );
30
31	// Remove WordPress 2.3 redirection
32	remove_action( 'template_redirect', 'wp_old_slug_redirect' );
33	remove_action( 'edit_form_advanced', 'wp_remember_old_slug' );
34	}
35
36	public function init() {
37	$url = $_SERVER['REQUEST_URI'];
38
39	// Make sure we don't try and redirect something essential
40	if ( !$this->protected_url( $url ) && $this->matched === false ) {
41	do_action( 'redirection_first', $url, $this );
42
43	$redirects = Red_Item::get_for_url( $url, 'wp' );
44
45	foreach ( (array)$redirects AS $item ) {
46	if ( $item->matches( $url ) ) {
47	$this->matched = $item;
48	break;
49	}
50	}
51
52	do_action( 'redirection_last', $url, $this );
53	}
54	}
55
56	private function protected_url( $url ) {
57	return false;
58	}
59
60	public function template_redirect() {
61	if ( is_404() ) {
62	$options = red_get_options();
63
64	if ( isset( $options['expire_404'] ) && $options['expire_404'] >= 0 ) {
65	RE_404::create( $this->get_url(), $this->get_user_agent(), $this->get_ip(), $this->get_referrer() );
66	}
67	}
68	}
69
70	public function status_header( $status ) {
71	// Fix for incorrect headers sent when using FastCGI/IIS
72	if ( substr( php_sapi_name(), 0, 3 ) == 'cgi' )
73	return str_replace( 'HTTP/1.1', 'Status:', $status );
74	return $status;
75	}
76
77	public function send_headers( $obj ) {
78	if ( !empty( $this->matched ) && $this->matched->match->action_code == '410' ) {
79	add_filter( 'status_header', array( &$this, 'set_header_410' ) );
80	}
81	}
82
83	public function set_header_410() {
84	return 'HTTP/1.1 410 Gone';
85	}
86
87	public function wp_redirect( $url, $status ) {
88	global $wp_version, $is_IIS;
89
90	if ( $is_IIS ) {
91	header( "Refresh: 0;url=$url" );
92	return $url;
93	}
94	elseif ( $status == 301 && php_sapi_name() == 'cgi-fcgi' ) {
95	$servers_to_check = array( 'lighttpd', 'nginx' );
96	foreach ( $servers_to_check as $name ) {
97	if ( stripos( $_SERVER['SERVER_SOFTWARE'], $name ) !== false ) {
98	status_header( $status );
99	header( "Location: $url" );
100	exit( 0 );
101	}
102	}
103	}
104
105	status_header( $status );
106	return $url;
107	}
108
109	public function update( $data ) {
110	return false;
111	}
112
113	protected function load( $options ) {
114	}
115
116	protected function flush_module() {
117	}
118
119	public function permalink_redirect_skip( $skip ) {
120	// only want this if we've matched using redirection
121	if ( $this->matched )
122	$skip[] = $_SERVER['REQUEST_URI'];
123	return $skip;
124	}
125
126	public function get_name() {
127	return __( 'WordPress', 'redirection' );
128	}
129
130	public function get_description() {
131	return __( 'WordPress-powered redirects. This requires no further configuration, and you can track hits.', 'redirection' );
132	}
133
134	private function get_url() {
135	if ( isset( $_SERVER['REQUEST_URI'] ) )
136	return $_SERVER['REQUEST_URI'];
137	return '';
138	}
139
140	private function get_user_agent() {
141	if ( isset( $_SERVER['HTTP_USER_AGENT'] ) )
142	return $_SERVER['HTTP_USER_AGENT'];
143	return false;
144	}
145
146	private function get_referrer() {
147	if ( isset( $_SERVER['HTTP_REFERER'] ) )
148	return $_SERVER['HTTP_REFERER'];
149	return false;
150	}
151
152	private function get_ip() {
153	if ( isset( $_SERVER['REMOTE_ADDR'] ) )
154	return $_SERVER['REMOTE_ADDR'];
155	elseif ( isset( $_SERVER['HTTP_X_FORWARDED_FOR'] ) )
156	return $_SERVER['HTTP_X_FORWARDED_FOR'];
157	return '';
158	}
159	}
160