redirection / modules / wordpress.php

wordpress.php in Redirection 3.0, 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	private $can_log = true;
8
9	public function get_id() {
10	return self::MODULE_ID;
11	}
12
13	public function get_name() {
14	return 'WordPress';
15	}
16
17	public function start() {
18	// Setup the various filters and actions that allow Redirection to happen
19	add_action( 'init', array( $this, 'init' ) );
20	add_action( 'send_headers', array( $this, 'send_headers' ) );
21	add_filter( 'permalink_redirect_skip', array( $this, 'permalink_redirect_skip' ) );
22	add_filter( 'wp_redirect', array( $this, 'wp_redirect' ), 1, 2 );
23	add_action( 'template_redirect', array( $this, 'template_redirect' ) );
24	//add_filter( 'status_header', array( $this, 'status_header_404' ), 10, 4 );
25	add_action( 'redirection_visit', array( $this, 'redirection_visit' ), 10, 3 );
26	add_action( 'redirection_do_nothing', array( $this, 'redirection_do_nothing' ) );
27
28	// Remove WordPress 2.3 redirection
29	remove_action( 'template_redirect', 'wp_old_slug_redirect' );
30	}
31
32	// Replacement for template_redirect to catch all 404 situations, not just template_redirect
33	public function status_header_404( $status_header, $code, $description, $protocol ) {
34	if ( $code === 404 ) {
35	$options = red_get_options();
36
37	if ( isset( $options['expire_404'] ) && $options['expire_404'] >= 0 && apply_filters( 'redirection_log_404', $this->can_log ) ) {
38	RE_404::create( Redirection_Request::get_request_url(), Redirection_Request::get_user_agent(), Redirection_Request::get_ip(), Redirection_Request::get_referrer() );
39	}
40	}
41
42	return $status_header;
43	}
44
45	public function redirection_do_nothing() {
46	$this->can_log = false;
47	return false;
48	}
49
50	public function redirection_visit( $redirect, $url, $target ) {
51	$redirect->visit( $url, $target );
52	}
53
54	public function init() {
55	$url = apply_filters( 'redirection_url_source', Redirection_Request::get_request_url() );
56
57	// Make sure we don't try and redirect something essential
58	if ( $url && ! $this->protected_url( $url ) && $this->matched === false ) {
59	do_action( 'redirection_first', $url, $this );
60
61	$redirects = Red_Item::get_for_url( $url, 'wp' );
62
63	foreach ( (array) $redirects as $item ) {
64	if ( $item->matches( $url ) ) {
65	$this->matched = $item;
66	break;
67	}
68	}
69
70	do_action( 'redirection_last', $url, $this );
71	}
72	}
73
74	private function protected_url( $url ) {
75	return false;
76	}
77
78	public function template_redirect() {
79	if ( is_404() ) {
80	$options = red_get_options();
81
82	if ( isset( $options['expire_404'] ) && $options['expire_404'] >= 0 && apply_filters( 'redirection_log_404', $this->can_log ) ) {
83	RE_404::create( Redirection_Request::get_request_url(), Redirection_Request::get_user_agent(), Redirection_Request::get_ip(), Redirection_Request::get_referrer() );
84	}
85	}
86	}
87
88	public function status_header( $status ) {
89	// Fix for incorrect headers sent when using FastCGI/IIS
90	if ( substr( php_sapi_name(), 0, 3 ) === 'cgi' ) {
91	return str_replace( 'HTTP/1.1', 'Status:', $status );
92	}
93
94	return $status;
95	}
96
97	public function send_headers( $obj ) {
98	if ( ! empty( $this->matched ) && $this->matched->match->action_code === '410' ) {
99	add_filter( 'status_header', array( $this, 'set_header_410' ) );
100	}
101	}
102
103	public function set_header_410() {
104	return 'HTTP/1.1 410 Gone';
105	}
106
107	public function wp_redirect( $url, $status ) {
108	global $wp_version, $is_IIS;
109
110	if ( $is_IIS ) {
111	header( "Refresh: 0;url=$url" );
112	return $url;
113	}
114
115	if ( $status === 301 && php_sapi_name() === 'cgi-fcgi' ) {
116	$servers_to_check = array( 'lighttpd', 'nginx' );
117
118	foreach ( $servers_to_check as $name ) {
119	if ( stripos( $_SERVER['SERVER_SOFTWARE'], $name ) !== false ) {
120	status_header( $status );
121	header( "Location: $url" );
122	exit( 0 );
123	}
124	}
125	}
126
127	if ( intval( $status, 10 ) === 307 ) {
128	status_header( $status );
129	nocache_headers();
130	return $url;
131	}
132
133	$options = red_get_options();
134
135	// Do we need to set the cache header?
136	if ( ! headers_sent() && isset( $options['redirect_cache'] ) && $options['redirect_cache'] !== 0 && intval( $status, 10 ) === 301 ) {
137	if ( $options['redirect_cache'] === -1 ) {
138	// No cache - just use WP function
139	nocache_headers();
140	} else {
141	// Custom cache
142	header( 'Expires: ' . gmdate( 'D, d M Y H:i:s T', time() + $options['redirect_cache'] * 60 * 60 ) );
143	header( 'Cache-Control: max-age=' . $options['redirect_cache'] * 60 * 60 );
144	}
145	}
146
147	status_header( $status );
148	return $url;
149	}
150
151	public function update( array $data ) {
152	return false;
153	}
154
155	protected function load( $options ) {
156	}
157
158	protected function flush_module() {
159	}
160
161	public function permalink_redirect_skip( $skip ) {
162	// only want this if we've matched using redirection
163	if ( $this->matched ) {
164	$skip[] = $_SERVER['REQUEST_URI'];
165	}
166
167	return $skip;
168	}
169
170	public function reset() {
171	$this->can_log = true;
172	}
173	}
174