redirection / modules / wordpress.php

wordpress.php in Redirection 2.3.13, at modules/wordpress.php

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1	<?php
2
3	class WordPress_Module extends Red_Module {
4	private $matched = false;
5
6	public function start() {
7	// Setup the various filters and actions that allow Redirection to happen
8	add_action( 'init', array( &$this, 'init' ) );
9	add_action( 'send_headers', array( &$this, 'send_headers' ) );
10	add_filter( 'permalink_redirect_skip', array( &$this, 'permalink_redirect_skip' ) );
11	add_filter( 'wp_redirect', array( &$this, 'wp_redirect' ), 1, 2 );
12	add_action( 'template_redirect', array( &$this, 'template_redirect' ) );
13
14	// Remove WordPress 2.3 redirection
15	remove_action( 'template_redirect', 'wp_old_slug_redirect' );
16	remove_action( 'edit_form_advanced', 'wp_remember_old_slug' );
17	}
18
19	public function init() {
20	$url = $_SERVER['REQUEST_URI'];
21
22	// Make sure we don't try and redirect something essential
23	if ( !$this->protected_url( $url ) && $this->matched === false ) {
24	do_action( 'redirection_first', $url, $this );
25
26	$redirects = Red_Item::get_for_url( $url, 'wp' );
27
28	foreach ( (array)$redirects AS $item ) {
29	if ( $item->matches( $url ) ) {
30	$this->matched = $item;
31	break;
32	}
33	}
34
35	do_action( 'redirection_last', $url, $this );
36	}
37	}
38
39	private function protected_url( $url ) {
40	return false;
41	}
42
43	public function template_redirect() {
44	if ( is_404() ) {
45	$options = red_get_options();
46
47	if ( isset( $options['expire_404'] ) && $options['expire_404'] >= 0 ) {
48	RE_404::create( $this->get_url(), $this->get_user_agent(), $this->get_ip(), $this->get_referrer() );
49	}
50	}
51	}
52
53	public function status_header( $status ) {
54	// Fix for incorrect headers sent when using FastCGI/IIS
55	if ( substr( php_sapi_name(), 0, 3 ) == 'cgi' )
56	return str_replace( 'HTTP/1.1', 'Status:', $status );
57	return $status;
58	}
59
60	public function send_headers( $obj ) {
61	if ( !empty( $this->matched ) && $this->matched->match->action_code == '410' ) {
62	add_filter( 'status_header', array( &$this, 'set_header_410' ) );
63	}
64	}
65
66	public function set_header_410() {
67	return 'HTTP/1.1 410 Gone';
68	}
69
70	public function wp_redirect( $url, $status ) {
71	global $wp_version, $is_IIS;
72
73	if ( $is_IIS ) {
74	header( "Refresh: 0;url=$url" );
75	return $url;
76	}
77	elseif ( $status == 301 && php_sapi_name() == 'cgi-fcgi' ) {
78	$servers_to_check = array( 'lighttpd', 'nginx' );
79	foreach ( $servers_to_check as $name ) {
80	if ( stripos( $_SERVER['SERVER_SOFTWARE'], $name ) !== false ) {
81	status_header( $status );
82	header( "Location: $url" );
83	exit( 0 );
84	}
85	}
86	}
87
88	status_header( $status );
89	return $url;
90	}
91
92	public function save( $data ) {
93	return array();
94	}
95
96	public function permalink_redirect_skip( $skip ) {
97	// only want this if we've matched using redirection
98	if ( $this->matched )
99	$skip[] = $_SERVER['REQUEST_URI'];
100	return $skip;
101	}
102
103	public function is_valid() {
104	$perm = get_option( 'permalink_structure' );
105	if ( $perm === false \|\| $perm == '' )
106	return false;
107	return true;
108	}
109
110	public function options() {
111	if ( !$this->is_valid() )
112	echo __( '<strong>Disabled: You must enable <a href="options-permalink.php">permalinks</a> before using this</strong>', 'redirection' );
113	}
114
115	public function get_type_string() {
116	return __( 'WordPress', 'redirection' );
117	}
118
119	private function get_url() {
120	if ( isset( $_SERVER['REQUEST_URI'] ) )
121	return $_SERVER['REQUEST_URI'];
122	return '';
123	}
124
125	private function get_user_agent() {
126	if ( isset( $_SERVER['HTTP_USER_AGENT'] ) )
127	return $_SERVER['HTTP_USER_AGENT'];
128	return false;
129	}
130
131	private function get_referrer() {
132	if ( isset( $_SERVER['HTTP_REFERER'] ) )
133	return $_SERVER['HTTP_REFERER'];
134	return false;
135	}
136
137	private function get_ip() {
138	if ( isset( $_SERVER['REMOTE_ADDR'] ) )
139	return $_SERVER['REMOTE_ADDR'];
140	elseif ( isset( $_SERVER['HTTP_X_FORWARDED_FOR'] ) )
141	return $_SERVER['HTTP_X_FORWARDED_FOR'];
142	return '';
143	}
144	}
145