redirection / models / htaccess.php

htaccess.php in Redirection 2.3.8, at models/htaccess.php

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1	<?php
2
3	class Red_Htaccess {
4	var $items;
5
6	function encode_from( $url ) {
7	return '^'.$this->encode( $url ).'$';
8	}
9
10	function encode2nd( $url ) {
11	$url = urlencode( $url );
12	$url = str_replace( '%2F', '/', $url );
13	$url = str_replace( '%3A', ':', $url );
14	$url = str_replace( '+', '%20', $url );
15	$url = str_replace( '%24', '$', $url );
16	return $url;
17	}
18
19	function encode( $url ) {
20	$url = urlencode( $url );
21	$url = str_replace( '%2F', '/', $url );
22	$url = str_replace( '+', '%20', $url );
23	$url = str_replace( '.', '\\.', $url );
24	return $url;
25	}
26
27	function encode_regex( $url ) {
28	$url = str_replace( ' ', '%20', $url );
29	$url = str_replace( '.', '\\.', $url );
30	$url = str_replace( '\\.', '.', $url );
31	$url = str_replace( '%24', '$', $url );
32	return $url;
33	}
34
35	function add_referrer( $item, $match ) {
36	$from = $this->encode_from( ltrim( $item->url, '/' ) );
37	if ( $item->regex )
38	$from = $this->encode_regex( ltrim( $item->url, '/' ) );
39
40	if ( ( $match->url_from \|\| $match->url_notfrom ) && $match->referrer ) {
41	$this->items[] = sprintf( 'RewriteCond %%{HTTP_REFERER} %s [NC]', ( $match->regex ? $this->encode_regex( $match->referrer ) : $this->encode_from( $match->referrer ) ) );
42
43	if ( $match->url_from ) {
44	$to = $this->target( $item->action_type, $match->url_from, $item->action_code, $item->regex );
45	$this->items[] = sprintf( 'RewriteRule %s %s', $from, $to );
46	}
47
48	if ( $match->url_notfrom ) {
49	$to = $this->target( $item->action_type, $match->url_notfrom, $item->action_code, $item->regex );
50	$this->items[] = sprintf( 'RewriteRule %s %s', $from, $to );
51	}
52	}
53	}
54
55	function add_agent( $item, $match ) {
56	$from = $this->encode( ltrim( $item->url, '/' ) );
57	if ( $item->regex )
58	$from = $this->encode_regex( ltrim( $item->url, '/' ) );
59
60	if ( ( $match->url_from \|\| $match->url_notfrom ) && $match->user_agent ) {
61	$this->items[] = sprintf( 'RewriteCond %%{HTTP_USER_AGENT} %s [NC]', ( $match->regex ? $this->encode_regex( $match->user_agent ) : $this->encode2nd( $match->user_agent ) ) );
62
63	if ( $match->url_from ) {
64	$to = $this->target( $item->action_type, $match->url_from, $item->action_code, $item->regex );
65	$this->items[] = sprintf( 'RewriteRule %s %s', $from, $to );
66	}
67
68	if ( $match->url_notfrom ) {
69	$to = $this->target( $item->action_type, $match->url_notfrom, $item->action_code, $item->regex );
70	$this->items[] = sprintf( 'RewriteRule %s %s', $from, $to );
71	}
72	}
73	}
74
75	function add_url( $item, $match ) {
76	$to = $this->target( $item->action_type, $match->url, $item->action_code, $item->regex );
77	$from = $this->encode_from( ltrim( $item->url, '/' ) );
78	if ( $item->regex )
79	$from = $this->encode_regex( ltrim ($item->url, '/' ) );
80
81	if ( $to )
82	$this->items[] = sprintf( 'RewriteRule %s %s', $from, $to );
83	}
84
85	function action_random( $data, $code, $regex ) {
86	// Pick a WP post at random
87	global $wpdb;
88
89	$post = $wpdb->get_var( "SELECT ID FROM {$wpdb->posts} ORDER BY RAND() LIMIT 0,1" );
90	$url = parse_url( get_permalink( $post ) );
91
92	return sprintf( '%s [R=%d,L]', $this->encode( $url['path'] ), $code );
93	}
94
95	function action_pass( $data, $code, $regex ) {
96	if ( $regex )
97	return sprintf( '%s [L]', $this->encode2nd( $data ), $code );
98	return sprintf( '%s [L]', $this->encode2nd( $data ), $code );
99	}
100
101	function action_error( $data, $code, $regex) {
102	if ( $code == '410' )
103	return '/ [G,L]';
104	return '/ [F,L]';
105	}
106
107	function action_url( $data, $code, $regex ) {
108	if ( $regex )
109	return sprintf( '%s [R=%d,L]', $this->encode2nd( $data ), $code );
110	return sprintf( '%s [R=%d,L]', $this->encode2nd( $data ), $code );
111	}
112
113	function target( $action, $data, $code, $regex ) {
114	$target = 'action_'.$action;
115
116	if ( method_exists( $this, $target ) )
117	return $this->$target( $data, $code, $regex );
118	return '';
119	}
120
121	function add( $item ) {
122	$target = 'add_'.$item->match_type;
123
124	if ( method_exists( $this, $target ) )
125	$this->$target( $item, $item->match );
126	}
127
128	function generate() {
129	// Head of redirection section - do not localize this
130	global $redirection;
131
132	$text[] = '# Created by Redirection';
133	$text[] = '# '.date ('r');
134	$text[] = '# Redirection '.$redirection->version().' - http://urbangiraffe.com/plugins/redirection/';
135	$text[] = '';
136
137	// Default blocked files - I can't think of a reason not to block these
138	$text[] = '<Files .htaccess,.svn>';
139	$text[] = 'order allow,deny';
140	$text[] = 'deny from all';
141	$text[] = '</Files>';
142	$text[] = '';
143
144	// mod_rewrite section
145	$text[] = '';
146	$text[] = 'Options +FollowSymlinks';
147	$text[] = '';
148	$text[] = '<IfModule mod_rewrite.c>';
149
150	// Add redirects
151	if ( is_array( $this->items ) )
152	$text = array_merge( $text, $this->items );
153
154	// End of mod_rewrite
155	$text[] = '</IfModule>';
156	$text[] = '';
157
158	// End of redirection section
159	$text[] = '# End of Redirection';
160	$text[] = '';
161
162	$text = implode( "\r\n", $text );
163	$text = str_replace( "\r\n\r\n\r\n", "\r\n", $text );
164	$text = str_replace( "\r\n\r\n\r\n", "\r\n", $text );
165	return $text;
166	}
167
168	function save( $filename, $name ) {
169	$text = $this->generate( $name );
170
171	// Does the file already exist?
172	if ( file_exists( $filename) ) {
173	$existing = @file_get_contents( $filename );
174
175	// Remove any existing Redirection module
176	$text .= preg_replace( '@# Created by Redirection Module: '.$name.'(.*?)# End of Redirection@s', '', $existing );
177	}
178
179	$file = @fopen( $filename, 'w' );
180	if ( $file ) {
181	$text = str_replace( "\r\n\r\n\r\n", "\r\n", $text );
182	$text = str_replace( "\r\n\r\n\r\n", "\r\n", $text );
183
184	fwrite( $file, $text );
185	fclose( $file );
186	return true;
187	}
188
189	return false;
190	}
191	}
192