redirection / modules / wordpress.php

wordpress.php in Redirection 2.6.1, 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 $matched = false;
7
8	public function get_id() {
9	return self::MODULE_ID;
10	}
11
12	public function can_edit_config() {
13	return false;
14	}
15
16	public function render_config() {
17	}
18
19	public function get_config() {
20	return array();
21	}
22
23	public function start() {
24	// Setup the various filters and actions that allow Redirection to happen
25	add_action( 'init', array( &$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 = apply_filters( 'redirection_url_source', Redirection_Request::get_request_url() );
38
39	// Make sure we don't try and redirect something essential
40	if ( $url && ! $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( Redirection_Request::get_request_url(), Redirection_Request::get_user_agent(), Redirection_Request::get_ip(), Redirection_Request::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
97	foreach ( $servers_to_check as $name ) {
98	if ( stripos( $_SERVER['SERVER_SOFTWARE'], $name ) !== false ) {
99	status_header( $status );
100	header( "Location: $url" );
101	exit( 0 );
102	}
103	}
104	}
105	elseif ( $status == 307) {
106	status_header( $status );
107	header( "Cache-Control: no-cache, must-revalidate, max-age=0" );
108	header( "Expires: Sat, 26 Jul 1997 05:00:00 GMT" );
109	return $url;
110	}
111	status_header( $status );
112	return $url;
113	}
114
115	public function update( $data ) {
116	return false;
117	}
118
119	protected function load( $options ) {
120	}
121
122	protected function flush_module() {
123	}
124
125	public function permalink_redirect_skip( $skip ) {
126	// only want this if we've matched using redirection
127	if ( $this->matched )
128	$skip[] = $_SERVER['REQUEST_URI'];
129	return $skip;
130	}
131
132	public function get_name() {
133	return __( 'WordPress', 'redirection' );
134	}
135
136	public function get_description() {
137	return __( 'WordPress-powered redirects. This requires no further configuration, and you can track hits.', 'redirection' );
138	}
139	}
140