redirection / modules / wordpress.php

wordpress.php in Redirection 2.8, 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	add_action( 'redirection_visit', array( $this, 'redirection_visit' ), 10, 3 );
24
25	// Remove WordPress 2.3 redirection
26	remove_action( 'template_redirect', 'wp_old_slug_redirect' );
27	remove_action( 'edit_form_advanced', 'wp_remember_old_slug' );
28	}
29
30	public function redirection_visit( $redirect, $url, $target ) {
31	$redirect->visit( $url, $target );
32	}
33
34	public function init() {
35	$url = apply_filters( 'redirection_url_source', Redirection_Request::get_request_url() );
36
37	// Make sure we don't try and redirect something essential
38	if ( $url && ! $this->protected_url( $url ) && $this->matched === false ) {
39	do_action( 'redirection_first', $url, $this );
40
41	$redirects = Red_Item::get_for_url( $url, 'wp' );
42
43	foreach ( (array) $redirects as $item ) {
44	if ( $item->matches( $url ) ) {
45	$this->matched = $item;
46	break;
47	}
48	}
49
50	do_action( 'redirection_last', $url, $this );
51	}
52	}
53
54	private function protected_url( $url ) {
55	return false;
56	}
57
58	public function template_redirect() {
59	if ( is_404() ) {
60	$options = red_get_options();
61
62	if ( isset( $options['expire_404'] ) && $options['expire_404'] >= 0 ) {
63	RE_404::create( Redirection_Request::get_request_url(), Redirection_Request::get_user_agent(), Redirection_Request::get_ip(), Redirection_Request::get_referrer() );
64	}
65	}
66	}
67
68	public function status_header( $status ) {
69	// Fix for incorrect headers sent when using FastCGI/IIS
70	if ( substr( php_sapi_name(), 0, 3 ) === 'cgi' ) {
71	return str_replace( 'HTTP/1.1', 'Status:', $status );
72	}
73
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	} elseif ( $status === 301 && php_sapi_name() === 'cgi-fcgi' ) {
94	$servers_to_check = array( 'lighttpd', 'nginx' );
95
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	} elseif ( $status == 307 ) {
104	status_header( $status );
105	header( "Cache-Control: no-cache, must-revalidate, max-age=0" );
106	header( "Expires: Sat, 26 Jul 1997 05:00:00 GMT" );
107	return $url;
108	}
109
110	status_header( $status );
111	return $url;
112	}
113
114	public function update( array $data ) {
115	return false;
116	}
117
118	protected function load( $options ) {
119	}
120
121	protected function flush_module() {
122	}
123
124	public function permalink_redirect_skip( $skip ) {
125	// only want this if we've matched using redirection
126	if ( $this->matched ) {
127	$skip[] = $_SERVER['REQUEST_URI'];
128	}
129
130	return $skip;
131	}
132	}
133