redirection / modules / wordpress.php

wordpress.php in Redirection 2.7.1, 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 $matched = false;
7
8	public function get_id() {
9	return self::MODULE_ID;
10	}
11
12	public function get_name() {
13	return 'WordPress';
14	}
15
16	public function start() {
17	// Setup the various filters and actions that allow Redirection to happen
18	add_action( 'init', array( &$this, 'init' ) );
19	add_action( 'send_headers', array( &$this, 'send_headers' ) );
20	add_filter( 'permalink_redirect_skip', array( &$this, 'permalink_redirect_skip' ) );
21	add_filter( 'wp_redirect', array( &$this, 'wp_redirect' ), 1, 2 );
22	add_action( 'template_redirect', array( &$this, 'template_redirect' ) );
23
24	// Remove WordPress 2.3 redirection
25	remove_action( 'template_redirect', 'wp_old_slug_redirect' );
26	remove_action( 'edit_form_advanced', 'wp_remember_old_slug' );
27	}
28
29	public function init() {
30	$url = apply_filters( 'redirection_url_source', Redirection_Request::get_request_url() );
31
32	// Make sure we don't try and redirect something essential
33	if ( $url && ! $this->protected_url( $url ) && $this->matched === false ) {
34	do_action( 'redirection_first', $url, $this );
35
36	$redirects = Red_Item::get_for_url( $url, 'wp' );
37
38	foreach ( (array) $redirects as $item ) {
39	if ( $item->matches( $url ) ) {
40	$this->matched = $item;
41	break;
42	}
43	}
44
45	do_action( 'redirection_last', $url, $this );
46	}
47	}
48
49	private function protected_url( $url ) {
50	return false;
51	}
52
53	public function template_redirect() {
54	if ( is_404() ) {
55	$options = red_get_options();
56
57	if ( isset( $options['expire_404'] ) && $options['expire_404'] >= 0 ) {
58	RE_404::create( Redirection_Request::get_request_url(), Redirection_Request::get_user_agent(), Redirection_Request::get_ip(), Redirection_Request::get_referrer() );
59	}
60	}
61	}
62
63	public function status_header( $status ) {
64	// Fix for incorrect headers sent when using FastCGI/IIS
65	if ( substr( php_sapi_name(), 0, 3 ) === 'cgi' )
66	return str_replace( 'HTTP/1.1', 'Status:', $status );
67	return $status;
68	}
69
70	public function send_headers( $obj ) {
71	if ( ! empty( $this->matched ) && $this->matched->match->action_code === '410' ) {
72	add_filter( 'status_header', array( &$this, 'set_header_410' ) );
73	}
74	}
75
76	public function set_header_410() {
77	return 'HTTP/1.1 410 Gone';
78	}
79
80	public function wp_redirect( $url, $status ) {
81	global $wp_version, $is_IIS;
82
83	if ( $is_IIS ) {
84	header( "Refresh: 0;url=$url" );
85	return $url;
86	}
87	elseif ( $status === 301 && php_sapi_name() === 'cgi-fcgi' ) {
88	$servers_to_check = array( 'lighttpd', 'nginx' );
89
90	foreach ( $servers_to_check as $name ) {
91	if ( stripos( $_SERVER['SERVER_SOFTWARE'], $name ) !== false ) {
92	status_header( $status );
93	header( "Location: $url" );
94	exit( 0 );
95	}
96	}
97	}
98	elseif ( $status == 307) {
99	status_header( $status );
100	header( "Cache-Control: no-cache, must-revalidate, max-age=0" );
101	header( "Expires: Sat, 26 Jul 1997 05:00:00 GMT" );
102	return $url;
103	}
104	status_header( $status );
105	return $url;
106	}
107
108	public function update( array $data ) {
109	return false;
110	}
111
112	protected function load( $options ) {
113	}
114
115	protected function flush_module() {
116	}
117
118	public function permalink_redirect_skip( $skip ) {
119	// only want this if we've matched using redirection
120	if ( $this->matched )
121	$skip[] = $_SERVER['REQUEST_URI'];
122	return $skip;
123	}
124	}
125