redirection / modules / wordpress.php

wordpress.php in Redirection 2.10, 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	remove_action( 'edit_form_advanced', 'wp_remember_old_slug' );
31	}
32
33	// Replacement for template_redirect to catch all 404 situations, not just template_redirect
34	public function status_header_404( $status_header, $code, $description, $protocol ) {
35	if ( $code === 404 ) {
36	$options = red_get_options();
37
38	if ( isset( $options['expire_404'] ) && $options['expire_404'] >= 0 && apply_filters( 'redirection_log_404', $this->can_log ) ) {
39	RE_404::create( Redirection_Request::get_request_url(), Redirection_Request::get_user_agent(), Redirection_Request::get_ip(), Redirection_Request::get_referrer() );
40	}
41	}
42
43	return $status_header;
44	}
45
46	public function redirection_do_nothing() {
47	$this->can_log = false;
48	return false;
49	}
50
51	public function redirection_visit( $redirect, $url, $target ) {
52	$redirect->visit( $url, $target );
53	}
54
55	public function init() {
56	$url = apply_filters( 'redirection_url_source', Redirection_Request::get_request_url() );
57
58	// Make sure we don't try and redirect something essential
59	if ( $url && ! $this->protected_url( $url ) && $this->matched === false ) {
60	do_action( 'redirection_first', $url, $this );
61
62	$redirects = Red_Item::get_for_url( $url, 'wp' );
63
64	foreach ( (array) $redirects as $item ) {
65	if ( $item->matches( $url ) ) {
66	$this->matched = $item;
67	break;
68	}
69	}
70
71	do_action( 'redirection_last', $url, $this );
72	}
73	}
74
75	private function protected_url( $url ) {
76	return false;
77	}
78
79	public function template_redirect() {
80	if ( is_404() ) {
81	$options = red_get_options();
82
83	if ( isset( $options['expire_404'] ) && $options['expire_404'] >= 0 && apply_filters( 'redirection_log_404', $this->can_log ) ) {
84	RE_404::create( Redirection_Request::get_request_url(), Redirection_Request::get_user_agent(), Redirection_Request::get_ip(), Redirection_Request::get_referrer() );
85	}
86	}
87	}
88
89	public function status_header( $status ) {
90	// Fix for incorrect headers sent when using FastCGI/IIS
91	if ( substr( php_sapi_name(), 0, 3 ) === 'cgi' ) {
92	return str_replace( 'HTTP/1.1', 'Status:', $status );
93	}
94
95	return $status;
96	}
97
98	public function send_headers( $obj ) {
99	if ( ! empty( $this->matched ) && $this->matched->match->action_code === '410' ) {
100	add_filter( 'status_header', array( $this, 'set_header_410' ) );
101	}
102	}
103
104	public function set_header_410() {
105	return 'HTTP/1.1 410 Gone';
106	}
107
108	public function wp_redirect( $url, $status ) {
109	global $wp_version, $is_IIS;
110
111	if ( $is_IIS ) {
112	header( "Refresh: 0;url=$url" );
113	return $url;
114	}
115
116	if ( $status === 301 && php_sapi_name() === 'cgi-fcgi' ) {
117	$servers_to_check = array( 'lighttpd', 'nginx' );
118
119	foreach ( $servers_to_check as $name ) {
120	if ( stripos( $_SERVER['SERVER_SOFTWARE'], $name ) !== false ) {
121	status_header( $status );
122	header( "Location: $url" );
123	exit( 0 );
124	}
125	}
126	}
127
128	if ( intval( $status, 10 ) === 307 ) {
129	status_header( $status );
130	nocache_headers();
131	return $url;
132	}
133
134	$options = red_get_options();
135
136	// Do we need to set the cache header?
137	if ( ! headers_sent() && isset( $options['redirect_cache'] ) && $options['redirect_cache'] !== 0 && intval( $status, 10 ) === 301 ) {
138	if ( $options['redirect_cache'] === -1 ) {
139	// No cache - just use WP function
140	nocache_headers();
141	} else {
142	// Custom cache
143	header( 'Expires: ' . gmdate( 'D, d M Y H:i:s T', time() + $options['redirect_cache'] * 60 * 60 ) );
144	header( 'Cache-Control: max-age=' . $options['redirect_cache'] * 60 * 60 );
145	}
146	}
147
148	status_header( $status );
149	return $url;
150	}
151
152	public function update( array $data ) {
153	return false;
154	}
155
156	protected function load( $options ) {
157	}
158
159	protected function flush_module() {
160	}
161
162	public function permalink_redirect_skip( $skip ) {
163	// only want this if we've matched using redirection
164	if ( $this->matched ) {
165	$skip[] = $_SERVER['REQUEST_URI'];
166	}
167
168	return $skip;
169	}
170
171	public function reset() {
172	$this->can_log = true;
173	}
174	}
175