wp-cache.php — WP Super Cache 0.6.2

wp-super-cache / wp-cache.php

wp-super-cache Last commit date

plugins 18 years ago Changelog.txt 18 years ago readme.txt 18 years ago wp-cache-base.php 18 years ago wp-cache-config-sample.php 18 years ago wp-cache-phase1.php 18 years ago wp-cache-phase2.php 18 years ago wp-cache.php 18 years ago

wp-cache.php

1080 lines

1	<?php
2	/*
3	Plugin Name: WP Super Cache
4	Plugin URI: http://ocaoimh.ie/wp-super-cache/
5	Description: Very fast caching module for WordPress. Once enabled, you must <a href="options-general.php?page=wp-super-cache/wp-cache.php">enable the cache</a>. Based on WP-Cache by <a href="http://mnm.uib.es/gallir/">Ricardo Galli Granada</a>.
6	Version: 0.6.2
7	Author: Donncha O Caoimh
8	Author URI: http://ocaoimh.ie/
9	*/
10	/* Copyright 2005-2006 Ricardo Galli Granada (email : gallir@uib.es)
11	Some code copyright 2007-2008 Donncha O Caoimh (http://ocaoimh.ie/)
12
13	This program is free software; you can redistribute it and/or modify
14	it under the terms of the GNU General Public License as published by
15	the Free Software Foundation; either version 2 of the License, or
16	(at your option) any later version.
17
18	This program is distributed in the hope that it will be useful,
19	but WITHOUT ANY WARRANTY; without even the implied warranty of
20	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21	GNU General Public License for more details.
22
23	You should have received a copy of the GNU General Public License
24	along with this program; if not, write to the Free Software
25	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26	*/
27
28	$wp_cache_config_file = ABSPATH . 'wp-content/wp-cache-config.php';
29
30	if( !@include($wp_cache_config_file) ) {
31	get_wpcachehome();
32	$wp_cache_config_file_sample = WPCACHEHOME . 'wp-cache-config-sample.php';
33	@include($wp_cache_config_file_sample);
34	} else {
35	get_wpcachehome();
36	}
37
38	$wp_cache_config_file_sample = WPCACHEHOME . 'wp-cache-config-sample.php';
39	$wp_cache_link = ABSPATH . 'wp-content/advanced-cache.php';
40	$wp_cache_file = WPCACHEHOME . 'wp-cache-phase1.php';
41
42	include(WPCACHEHOME . 'wp-cache-base.php');
43
44	function get_wpcachehome() {
45	if( defined( 'WPCACHEHOME' ) == false ) {
46	if( is_file( dirname(__FILE__) . '/wp-cache-config-sample.php' ) ) {
47	define( 'WPCACHEHOME', trailingslashit( dirname(__FILE__) ) );
48	} elseif( is_file( dirname(__FILE__) . '/wp-super-cache/wp-cache-config-sample.php' ) ) {
49	define( 'WPCACHEHOME', dirname(__FILE__) . '/wp-super-cache/' );
50	} else {
51	die( 'Please create wp-content/wp-cache-config.php from wp-super-cache/wp-cache-config-sample.php' );
52	}
53	}
54	}
55
56	function wp_cache_add_pages() {
57	if( function_exists( 'is_site_admin' ) ) {
58	if( is_site_admin() ) {
59	add_submenu_page('wpmu-admin.php', __('WP Super Cache'), __('WP Super Cache'), 'manage_options', __FILE__, 'wp_cache_manager');
60	add_options_page('WP Super Cache', 'WP Super Cache', 'manage_options', __FILE__, 'wp_cache_manager');
61	}
62	} else {
63	add_options_page('WP Super Cache', 'WP Super Cache', 'manage_options', __FILE__, 'wp_cache_manager');
64	}
65	}
66
67	function wp_cache_manager() {
68	global $wp_cache_config_file, $valid_nonce, $supercachedir, $cache_path, $cache_enabled, $cache_compression, $super_cache_enabled, $wp_cache_hello_world;
69
70	if( function_exists( 'is_site_admin' ) )
71	if( !is_site_admin() )
72	return;
73
74	$supercachedir = $cache_path . 'supercache/' . preg_replace('/:.*$/', '', $_SERVER["HTTP_HOST"]);
75	if( get_option( 'gzipcompression' ) == 1 )
76	update_option( 'gzipcompression', 0 );
77	$valid_nonce = wp_verify_nonce($_REQUEST['_wpnonce'], 'wp-cache');
78	/* http://www.netlobo.com/div_hiding.html */
79	?>
80	<script type='text/javascript'>
81	<!--
82	function toggleLayer( whichLayer ) {
83	var elem, vis;
84	if( document.getElementById ) // this is the way the standards work
85	elem = document.getElementById( whichLayer );
86	else if( document.all ) // this is the way old msie versions work
87	elem = document.all[whichLayer];
88	else if( document.layers ) // this is the way nn4 works
89	elem = document.layers[whichLayer];
90	vis = elem.style;
91	// if the style.display value is blank we try to figure it out here
92	if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
93	vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
94	vis.display = (vis.display==''\|\|vis.display=='block')?'none':'block';
95	}
96	// -->
97	</script>
98	<?php
99	echo '<div class="wrap">';
100	echo "<h2>WP Super Cache Manager</h2>\n";
101	if( ini_get( 'safe_mode' ) ) {
102	?><h3>Warning! PHP safe mode enabled!</h3>
103	<p>You may experience problems running this plugin because SAFE MODE is enabled. <?php
104	if( !ini_get( 'safe_mode_gid' ) ) {
105	?>Your server is set up to check the owner of PHP scripts before allowing them to read and write files.</p><p>You or an administrator may be able to make it work by changing the group owner of the plugin scripts to match that of the web server user. The group owner of the wp-content/cache/ directory must also be changed. See the <a href='http://php.net/features.safe-mode'>safe mode manual page</a> for further details.</p><?php
106	} else {
107	?>You or an administrator must disable this. See the <a href='http://php.net/features.safe-mode'>safe mode manual page</a> for further details. This cannot be disabled in a .htaccess file unfortunately. It must be done in the php.ini config file.</p><?php
108	}
109	}
110	if(isset($_REQUEST['wp_restore_config']) && $valid_nonce) {
111	unlink($wp_cache_config_file);
112	echo '<strong>Configuration file changed, some values might be wrong. Load the page again from the "Options" menu to reset them.</strong>';
113	}
114
115	if ( !wp_cache_check_link() \|\|
116	!wp_cache_verify_config_file() \|\|
117	!wp_cache_verify_cache_dir() ) {
118	echo "<br>Cannot continue... fix previous problems and retry.<br />";
119	echo "</div>\n";
120	return;
121	}
122
123	if (!wp_cache_check_global_config()) {
124	echo "</div>\n";
125	return;
126	}
127
128	if( $cache_enabled == true && $super_cache_enabled == true && !got_mod_rewrite() ) {
129	?><h4 style='color: #a00'>Mod rewrite may not be installed!</h4>
130	<p>It appears that mod_rewrite is not installed. Sometimes this check isn't 100% reliable, especially if you are not using Apache. Please verify that the mod_rewrite module is loaded. It is required for serving Super Cache static files. You will still be able to use WP-Cache.</p><?php
131	}
132
133	if( !is_writeable( ABSPATH . 'wp-content/' ) \|\| !is_writable($wp_cache_config_file) ) {
134	define( "SUBMITDISABLED", 'disabled style="color: #aaa" ' );
135	?><h4 style='color: #a00'>Read Only Mode. Configuration cannot be changed. <a href="javascript:toggleLayer('readonlywarning');" title="Why your configuration may not be changed">Why</a></h4>
136	<div id='readonlywarning' style='border: 1px solid #aaa; margin: 2px; padding: 2px; display: none;'>
137	<p>The WP Super Cache configuration file is <code><?php echo ABSPATH ?>wp-content/wp-cache-config.php</code> and cannot be modified. The wp-content directory and wp-cache-config.php file must be writeable by the webserver to make any changes.<br />
138	A simple way of doing that is by changing the permissions temporarily using the CHMOD command or through your ftp client. Make sure it's globally writeable and it should be fine.<br />
139	Writeable: <code>chmod 777 wp-content; chmod 666 wp-content/wp-cache-config.php</code><br />
140	Readonly: <code>chmod 755 wp-content; chmod 644 wp-content/wp-cache-config.php</code></p>
141	</div><?php
142	} else {
143	define( "SUBMITDISABLED", ' ' );
144	}
145
146	if ( $valid_nonce ) {
147	if( isset( $_POST[ 'wp_cache_status' ] ) ) {
148	switch( $_POST[ 'wp_cache_status' ] ) {
149	case 'all':
150	wp_cache_enable();
151	break;
152	case 'none':
153	wp_cache_disable();
154	break;
155	case 'wpcache':
156	wp_cache_enable();
157	wp_super_cache_disable();
158	break;
159	}
160	if( isset( $_POST[ 'wp_cache_hello_world' ] ) ) {
161	$wp_cache_hello_world = (int)$_POST[ 'wp_cache_hello_world' ];
162	} else {
163	$wp_cache_hello_world = 0;
164	}
165	wp_cache_replace_line('^ *\$wp_cache_hello_world', '$wp_cache_hello_world = ' . (int)$wp_cache_hello_world . ";", $wp_cache_config_file);
166	}
167	if( isset( $_POST[ 'cache_compression' ] ) && $_POST[ 'cache_compression' ] != $cache_compression ) {
168	$cache_compression_changed = true;
169	$cache_compression = intval( $_POST[ 'cache_compression' ] );
170	wp_cache_replace_line('^ *\$cache_compression', "\$cache_compression = " . $cache_compression . ";", $wp_cache_config_file);
171	if( function_exists( 'prune_super_cache' ) )
172	prune_super_cache ($cache_path, true);
173	delete_option( 'super_cache_meta' );
174	}
175	}
176
177	?><fieldset style='border: 1px solid #aaa' class="options">
178	<legend>WP Super Cache Status</legend><?php
179	echo '<form name="wp_manager" action="'. $_SERVER["REQUEST_URI"] . '" method="post">';
180	?>
181	<label><input type='radio' name='wp_cache_status' value='all' <?php if( $cache_enabled == true && $super_cache_enabled == true ) { echo 'checked=checked'; } ?>> <strong>ON</strong> (WP Cache and Super Cache enabled)</label><br />
182	<label><input type='radio' name='wp_cache_status' value='none' <?php if( $cache_enabled == false ) { echo 'checked=checked'; } ?>> <strong>OFF</strong> (WP Cache and Super Cache disabled)</label><br />
183	<label><input type='radio' name='wp_cache_status' value='wpcache' <?php if( $cache_enabled == true && $super_cache_enabled == false ) { echo 'checked=checked'; } ?>> <strong>HALF ON</strong> (Super Cache Disabled)</label><br />
184	<p><label><input type='checkbox' name='wp_cache_hello_world' <?php if( $wp_cache_hello_world ) echo "checked"; ?> value='1'> Proudly tell the world your server is Digg proof! (places a message in your blog's footer)</label></p>
185	<?php
186	echo "<div class='submit'><input " . SUBMITDISABLED . "type='submit' value='Update Status »' /></div>";
187	wp_nonce_field('wp-cache');
188	?>
189	</form>
190	</fieldset>
191
192	<?php if( $cache_enabled == true && $super_cache_enabled == true ) { ?>
193	<br /><fieldset style='border: 1px solid #aaa' class="options">
194	<legend>Super Cache Compression</legend>
195	<form name="wp_manager" action="<?php echo $_SERVER["REQUEST_URI"]; ?>" method="post">
196	<label><input type="radio" name="cache_compression" value="1" <?php if( $cache_compression ) { echo "checked=checked"; } ?>> Enabled</label>
197	<label><input type="radio" name="cache_compression" value="0" <?php if( !$cache_compression ) { echo "checked=checked"; } ?>> Disabled</label>
198	<p>Compression is disabled by default because some hosts have problems with compressed files. Switching this on and off clears the cache.</p>
199	<?php
200	if( isset( $cache_compression_changed ) && isset( $_POST[ 'cache_compression' ] ) && !$cache_compression ) {
201	?><p><strong>Super Cache compression is now disabled.</strong></p> <?php
202	} elseif( isset( $cache_compression_changed ) && isset( $_POST[ 'cache_compression' ] ) && $cache_compression ) {
203	?><p><strong>Super Cache compression is now enabled.</strong></p><?php
204	}
205	echo '<div class="submit"><input ' . SUBMITDISABLED . 'type="submit" value="Update Compression »" /></div>';
206	wp_nonce_field('wp-cache');
207	echo "</form>\n";
208	?></fieldset><br />
209
210	<fieldset style='border: 1px solid #aaa' class="options">
211	<legend>Mod Rewrite Rules</legend><?php
212	$home_path = get_home_path();
213	$home_root = parse_url(get_option('home'));
214	$home_root = trailingslashit($home_root['path']);
215	$wprules = implode( "\n", extract_from_markers( $home_path.'.htaccess', 'WordPress' ) );
216	$wprules = str_replace( "RewriteEngine On\n", '', $wprules );
217	$wprules = str_replace( "RewriteBase $home_root\n", '', $wprules );
218	$scrules = implode( "\n", extract_from_markers( $home_path.'.htaccess', 'WPSuperCache' ) );
219
220	$dohtaccess = true;
221	if( !$wprules \|\| $wprules == '' ) {
222	echo "<h4 style='color: #a00'>Mod Rewrite rules cannot be updated!</h4>";
223	echo "<p>You must have <strong>BEGIN</strong> and <strong>END</strong> markers in {$home_path}.htaccess for the auto update to work. They look like this and surround the main WordPress mod_rewrite rules:
224	<blockquote><code><em># BEGIN WordPress</em><br /> RewriteCond %{REQUEST_FILENAME} !-f<br /> RewriteCond %{REQUEST_FILENAME} !-d<br /> RewriteRule . /index.php [L]<br /> <em># END WordPress</em></code></blockquote>
225	Refresh this page when you have updated your .htaccess file.";
226	} elseif( strpos( $wprules, 'wordpressuser' ) ) { // Need to clear out old mod_rewrite rules
227	echo "<p><strong>Thank you for upgrading.</strong> The mod_rewrite rules changed since you last installed this plugin. Unfortunately you must remove the old supercache rules before the new ones are updated. Refresh this page when you have edited your .htaccess file. If you wish to manually upgrade, change the following line: <blockquote><code>RewriteCond %{HTTP_COOKIE} !^.wordpressuser.\$</code></blockquote> so it looks like this: <blockquote><code>RewriteCond %{HTTP_COOKIE} !^.wordpress.\$</code></blockquote> The only change is 'wordpressuser' becomes 'wordpress'. This is a WordPress 2.5 change but it's backwards compatible with older versions if you're brave enough to use them.</p>";
228	echo "</fieldset>";
229	echo "</div>\n";
230	return;
231	} elseif( strpos( $scrules, 'supercache' ) \|\| strpos( $wprules, 'supercache' ) ) { // only write the rules once
232	$dohtaccess = false;
233	}
234	$rules = "<IfModule mod_rewrite.c>\n";
235	$rules .= "RewriteEngine On\n";
236	$rules .= "RewriteBase $home_root\n"; // props Chris Messina
237	$rules .= "RewriteCond %{QUERY_STRING} !.s=.\n";
238	$rules .= "RewriteCond %{HTTP_COOKIE} !^.(comment_author_\|wordpress\|wp-postpass_).$\n";
239	$rules .= "RewriteCond %{HTTP:Accept-Encoding} gzip\n";
240	$rules .= "RewriteCond %{DOCUMENT_ROOT}{$home_root}wp-content/cache/supercache/%{HTTP_HOST}{$home_root}$1/index.html.gz -f\n";
241	$rules .= "RewriteRule ^(.*) {$home_root}wp-content/cache/supercache/%{HTTP_HOST}{$home_root}$1/index.html.gz [L]\n\n";
242
243	$rules .= "RewriteCond %{QUERY_STRING} !.s=.\n";
244	$rules .= "RewriteCond %{HTTP_COOKIE} !^.(comment_author_\|wordpress\|wp-postpass_).$\n";
245	$rules .= "RewriteCond %{DOCUMENT_ROOT}{$home_root}wp-content/cache/supercache/%{HTTP_HOST}{$home_root}$1/index.html -f\n";
246	$rules .= "RewriteRule ^(.*) {$home_root}wp-content/cache/supercache/%{HTTP_HOST}{$home_root}$1/index.html [L]\n";
247	$rules .= "</IfModule>\n";
248	if( $dohtaccess && !$_POST[ 'updatehtaccess' ] ) {
249	echo "<p>In order to serve static html files your server must have the correct mod_rewrite rules added to a file called <code>" . ABSPATH . ".htaccess</code><br /> This can be done automatically by clicking the <em>'Update mod_rewrite rules »'</em> button or you can edit the file yourself and add the following rules. Make sure they appear before any existing WordPress rules.";
250	echo "<pre>" . wp_specialchars( $rules ) . "</pre></p>";
251	echo '<form name="updatehtaccess" action="'. $_SERVER["REQUEST_URI"] . '" method="post">';
252	echo '<input type="hidden" name="updatehtaccess" value="1" />';
253	echo '<div class="submit"><input type="submit" ' . SUBMITDISABLED . 'id="updatehtaccess" value="Update mod_rewrite rules »" /></div>';
254	wp_nonce_field('wp-cache');
255	echo "</form>\n";
256	} elseif( $dohtaccess && $valid_nonce && $_POST[ 'updatehtaccess' ] ) {
257	wpsc_remove_marker( $home_path.'.htaccess', 'WordPress' ); // remove original WP rules so SuperCache rules go on top
258	if( insert_with_markers( $home_path.'.htaccess', 'WPSuperCache', explode( "\n", $rules ) ) && insert_with_markers( $home_path.'.htaccess', 'WordPress', explode( "\n", $wprules ) ) ) {
259	echo "<h4>Mod Rewrite rules updated!</h4>";
260	echo "<p><strong>" . ABSPATH . ".htaccess has been updated with the necessary mod_rewrite rules. Please verify they are correct. They should look like this:</strong></p>\n";
261	} else {
262	echo "<h4>Mod Rewrite rules must be updated!</h4>";
263	echo "<p><strong> Your " . ABSPATH . ".htaccess is not writable by the webserver and must be updated with the necessary mod_rewrite rules. The new rules go above the regular WordPress rules as shown in the code below:</strong></p>\n";
264	}
265	echo "<p><pre>" . wp_specialchars( $rules ) . "</pre></p>\n";
266	} else {
267	?>
268	<p>WP Super Cache has modified your <?php echo ABSPATH ?>.htaccess file. Click the following link to see the lines added. If you have upgraded the plugin make sure these rules match. <a href="javascript:toggleLayer('rewriterules');" title="See your mod_rewrite rules">View mod_rewrite rules</a>
269	<div id='rewriterules' style='display: none;'>
270	<?php echo "<p><pre>" . wp_specialchars( $rules ) . "</pre></p>\n"; ?>
271	</div>
272	<?php
273	}
274	// http://allmybrain.com/2007/11/08/making-wp-super-cache-gzip-compression-work/
275	if( !is_file( $cache_path . '.htaccess' ) ) {
276	$gziprules = "AddEncoding x-gzip .gz\n";
277	$gziprules .= "AddType text/html .gz";
278	$gziprules = insert_with_markers( $cache_path . '.htaccess', 'supercache', explode( "\n", $gziprules ) );
279	echo "<h4>Gzip encoding rules in {$cache_path}.htaccess created.</h4>";
280	}
281
282	?></fieldset><?php
283
284	} // if $super_cache_enabled
285
286	wp_cache_edit_max_time();
287
288	echo '<br /><a name="files"></a><fieldset style="border: 1px solid #aaa" class="options"><legend>Accepted filenames, rejected URIs</legend>';
289	wp_cache_edit_rejected();
290	echo "<br />\n";
291	wp_cache_edit_accepted();
292	echo '</fieldset>';
293
294	wp_cache_edit_rejected_ua();
295
296
297	wp_cache_files();
298
299	wp_lock_down();
300
301	wp_cache_restore();
302
303	ob_start();
304	if( defined( 'WP_CACHE' ) ) {
305	if( function_exists( 'do_cacheaction' ) ) {
306	do_cacheaction( 'cache_admin_page' );
307	}
308	}
309	$out = ob_get_contents();
310	ob_end_clean();
311	if( SUBMITDISABLED == ' ' && $out != '' ) {
312	echo '<fieldset class="options"><legend>Cache Plugins</legend>';
313	echo $out;
314	echo '</fieldset>';
315	}
316
317	echo "</div>\n";
318
319	}
320
321	function wp_cache_restore() {
322	echo '<br /><fieldset style="border: 1px solid #aaa" class="options"><legend>Configuration messed up?</legend>';
323	echo '<form name="wp_restore" action="'. $_SERVER["REQUEST_URI"] . '" method="post">';
324	echo '<input type="hidden" name="wp_restore_config" />';
325	echo '<div class="submit"><input type="submit" ' . SUBMITDISABLED . 'id="deletepost" value="Restore default configuration »" /></div>';
326	wp_nonce_field('wp-cache');
327	echo "</form>\n";
328	echo '</fieldset>';
329
330	}
331
332	function comment_form_lockdown_message() {
333	?><p><?php _e( "Comment moderation is enabled. Your comment may take some time to appear." ); ?></p><?php
334	}
335	if( defined( 'WPLOCKDOWN' ) && constant( 'WPLOCKDOWN' ) )
336	add_action( 'comment_form', 'comment_form_lockdown_message' );
337
338	function wp_lock_down() {
339	global $wpdb, $cache_path, $wp_cache_config_file, $valid_nonce, $cached_direct_pages, $cache_enabled, $super_cache_enabled;
340
341	if(isset($_POST['wp_lock_down']) && $valid_nonce) {
342	$wp_lock_down = $_POST['wp_lock_down'] == '1' ? '1' : '0';
343	wp_cache_replace_line('^.*WPLOCKDOWN', "define( 'WPLOCKDOWN', '$wp_lock_down' );", $wp_cache_config_file);
344	if( $wp_lock_down == '0' && function_exists( 'prune_super_cache' ) )
345	prune_super_cache( $cache_path, true ); // clear the cache after lockdown
346
347	}
348	if( !isset( $wp_lock_down ) ) {
349	if( defined( 'WPLOCKDOWN' ) ) {
350	$wp_lock_down = constant( 'WPLOCKDOWN' );
351	} else {
352	$wp_lock_down = '0';
353	}
354	}
355	?><br /><br /><fieldset style='border: 1px solid #aaa' class="options">
356	<legend>Lock Down: <span style='color: #f00'><?php echo $wp_lock_down == '0' ? 'disabled' : 'enabled'; ?></span> (advanced use only)</legend>
357	<p>Prepare your server for an expected spike in traffic by enabling the lock down. When this is enabled, new comments on a post will not refresh the cached static files.</p>
358	<p>Developers: Make your plugin lock down compatible by checking the 'WPLOCKDOWN' constant. The following code will make sure your plugin respects the WPLOCKDOWN setting.
359	<blockquote><code>if( defined( 'WPLOCKDOWN' ) && constant( 'WPLOCKDOWN' ) ) { <br />
360	echo "Sorry. My blog is locked down. Updates will appear shortly";<br />
361	}</code></blockquote>
362	<?php
363	if( $wp_lock_down == '1' ) {
364	?><strong>WordPress is locked down. Super Cache static files will not be deleted when new comments are made.</strong><?php
365	} else {
366	?><strong>WordPress is not locked down. New comments will refresh Super Cache static files as normal.</strong><?php
367	}
368	$new_lockdown = $wp_lock_down == '1' ? '0' : '1';
369	$new_lockdown_desc = $wp_lock_down == '1' ? 'Disable' : 'Enable';
370	echo '<form name="wp_lock_down" action="'. $_SERVER["REQUEST_URI"] . '" method="post">';
371	echo "<input type='hidden' name='wp_lock_down' value='{$new_lockdown}' />";
372	echo "<div class='submit'><input type='submit' " . SUBMITDISABLED . "value='{$new_lockdown_desc} Lock Down »' /></div>";
373	wp_nonce_field('wp-cache');
374	echo "</form>\n";
375
376	?></fieldset><br /><?php
377	if( $cache_enabled == true && $super_cache_enabled == true ) {
378	?><fieldset style='border: 1px solid #aaa' class="options">
379	<legend>Directly Cached Files (advanced use only)</legend><?php
380
381	$out = '';
382	if( $valid_nonce && is_array( $_POST[ 'direct_pages' ] ) && !empty( $_POST[ 'direct_pages' ] ) ) {
383	$expiredfiles = array_diff( $cached_direct_pages, $_POST[ 'direct_pages' ] );
384	unset( $cached_direct_pages );
385	foreach( $_POST[ 'direct_pages' ] as $page ) {
386	$page = $wpdb->escape( $page );
387	if( $page != '' ) {
388	$cached_direct_pages[] = $page;
389	$out .= "'$page', ";
390	}
391	}
392	if( $out == '' ) {
393	$out = "'', ";
394	}
395	}
396	if( $valid_nonce && $_POST[ 'new_direct_page' ] && '' != $_POST[ 'new_direct_page' ] ) {
397	$page = str_replace( get_option( 'siteurl' ), '', $_POST[ 'new_direct_page' ] );
398	if( substr( $page, 0, 1 ) != '/' )
399	$page = '/' . $page;
400	$page = $wpdb->escape( $page );
401	if( in_array( $page, $cached_direct_pages ) == false ) {
402	$cached_direct_pages[] = $page;
403	$out .= "'$page', ";
404	}
405	}
406
407	if( $out != '' ) {
408	$out = substr( $out, 0, -2 );
409	$out = '$cached_direct_pages = array( ' . $out . ' );';
410	wp_cache_replace_line('^ *\$cached_direct_pages', "$out", $wp_cache_config_file);
411	prune_super_cache( $cache_path, true );
412	}
413
414	if( !empty( $expiredfiles ) ) {
415	foreach( $expiredfiles as $file ) {
416	if( $file != '' ) {
417	$firstfolder = explode( '/', $file );
418	$firstfolder = ABSPATH . $firstfolder[1];
419	$file = ABSPATH . $file;
420	@unlink( trailingslashit( $file ) . 'index.html' );
421	@unlink( trailingslashit( $file ) . 'index.html.gz' );
422	RecursiveFolderDelete( trailingslashit( $firstfolder ) );
423	}
424	}
425	}
426
427	if( $valid_nonce && $_POST[ 'deletepage' ] ) {
428	$page = preg_replace('/[ <>\'\"\r\n\t]/', '', str_replace( '..', '', $_POST['deletepage']) );
429	$pagefile = ABSPATH . $page . 'index.html';
430	$firstfolder = explode( '/', $page );
431	$firstfolder = ABSPATH . $firstfolder[1];
432	$page = ABSPATH . $page;
433	if( is_file( $pagefile ) && is_writable( $pagefile ) && is_writable( $firstfolder ) ) {
434	@unlink( $pagefile );
435	@unlink( $pagefile . '.gz' );
436	RecursiveFolderDelete( $firstfolder );
437	echo "<strong>$pagefile removed!</strong><br />";
438	prune_super_cache( $cache_path, true );
439	}
440	}
441
442	$readonly = '';
443	if( !is_writeable( ABSPATH ) ) {
444	$readonly = 'READONLY';
445	?><p><strong style='color: #a00'>WARNING! You must make <?php echo ABSPATH ?> writable to enable this feature. As this is a security risk please make it readonly after your page is generated.</strong></p><?php
446	} else {
447	?><p><strong style='color: #a00'>WARNING! <?php echo ABSPATH ?> is writable. Please make it readonly after your page is generated as this is a security risk.</strong></p><?php
448	}
449	echo '<form name="direct_page" action="'. $_SERVER["REQUEST_URI"] . '" method="post">';
450	if( is_array( $cached_direct_pages ) ) {
451	$out = '';
452	foreach( $cached_direct_pages as $page ) {
453	if( $page == '' )
454	continue;
455	$generated = '';
456	if( is_file( ABSPATH . $page . '/index.html' ) )
457	$generated = '<input type="Submit" name="deletepage" value="' . $page . '">';
458	$out .= "<tr><td><input type='text' $readonly name='direct_pages[]' size='30' value='$page' /></td><td>$generated</td></tr>";
459	}
460	if( $out != '' ) {
461	?><table><tr><th>Existing direct page</th><th>Delete cached file</th></tr><?php
462	echo "$out</table>";
463	}
464	}
465	if( $readonly != 'READONLY' )
466	echo "Add direct page: <input type='text' $readonly name='new_direct_page' size='30' value='' /><br />";
467
468	echo "<p>Directly cached files are files created directly off " . ABSPATH . " where your blog lives. This feature is only useful if you are expecting a major Digg or Slashdot level of traffic to one post or page.</p>";
469	if( $readonly != 'READONLY' ) {
470	echo "<p>For example: to cache <em>'" . trailingslashit( get_option( 'siteurl' ) ) . "about/'</em>, you would enter '" . trailingslashit( get_option( 'siteurl' ) ) . "about/' or '/about/'. The cached file will be generated the next time an anonymous user visits that page.</p>";
471	echo "<p>Make the textbox blank to remove it from the list of direct pages and delete the cached file.</p>";
472	}
473
474	wp_nonce_field('wp-cache');
475	if( $readonly != 'READONLY' )
476	echo "<div class='submit'><input type='submit' ' . SUBMITDISABLED . 'value='Update direct pages »' /></div>";
477	echo "</form>\n";
478	?></fieldset><?php
479	} // if $super_cache_enabled
480	}
481
482	function RecursiveFolderDelete ( $folderPath ) { // from http://www.php.net/manual/en/function.rmdir.php
483	if( trailingslashit( constant( 'ABSPATH' ) ) == trailingslashit( $folderPath ) )
484	return false;
485	if ( @is_dir ( $folderPath ) ) {
486	$dh = @opendir($folderPath);
487	while (false !== ($value = @readdir($dh))) {
488	if ( $value != "." && $value != ".." ) {
489	$value = $folderPath . "/" . $value;
490	if ( @is_dir ( $value ) ) {
491	RecursiveFolderDelete ( $value );
492	}
493	}
494	}
495	return @rmdir ( $folderPath );
496	} else {
497	return FALSE;
498	}
499	}
500
501	function wp_cache_edit_max_time () {
502	global $super_cache_max_time, $cache_max_time, $wp_cache_config_file, $valid_nonce, $cache_enabled, $super_cache_enabled;
503
504	if( !isset( $super_cache_max_time ) )
505	$super_cache_max_time = 21600;
506
507	if(isset($_POST['wp_max_time']) && $valid_nonce) {
508	$max_time = (int)$_POST['wp_max_time'];
509	if ($max_time > 0) {
510	$cache_max_time = $max_time;
511	wp_cache_replace_line('^ *\$cache_max_time', "\$cache_max_time = $cache_max_time;", $wp_cache_config_file);
512	}
513	}
514	if(isset($_POST['super_cache_max_time']) && $valid_nonce) {
515	$max_time = (int)$_POST['super_cache_max_time'];
516	if ($max_time > 0) {
517	$super_cache_max_time = $max_time;
518	wp_cache_replace_line('^ *\$super_cache_max_time', "\$super_cache_max_time = $super_cache_max_time;", $wp_cache_config_file);
519	}
520	}
521	?><br /><fieldset style='border: 1px solid #aaa' class="options">
522	<legend>Expiry Time</legend><?php
523	echo '<form name="wp_edit_max_time" action="'. $_SERVER["REQUEST_URI"] . '" method="post">';
524	echo '<label for="wp_max_time">Expire time:</label> ';
525	echo "<input type=\"text\" size=6 name=\"wp_max_time\" value=\"$cache_max_time\" /> seconds<br />";
526	if( $cache_enabled == true && $super_cache_enabled == true ) {
527	echo '<label for="super_cache_max_time">Super Cache Expire time:</label> ';
528	echo "<input type=\"text\" size=6 name=\"super_cache_max_time\" value=\"$super_cache_max_time\" /> seconds";
529	}
530	echo '<div class="submit"><input type="submit" ' . SUBMITDISABLED . 'value="Change expiration »" /></div>';
531	wp_nonce_field('wp-cache');
532	echo "</form>\n";
533	?></fieldset><?php
534	}
535
536	function wp_cache_sanitize_value($text, & $array) {
537	$text = wp_specialchars(strip_tags($text));
538	$array = preg_split("/[\s,]+/", chop($text));
539	$text = var_export($array, true);
540	$text = preg_replace('/[\s]+/', ' ', $text);
541	return $text;
542	}
543
544	function wp_cache_edit_rejected_ua() {
545	global $cache_rejected_user_agent, $wp_cache_config_file, $valid_nonce;
546
547	if (!function_exists('apache_request_headers')) return;
548
549	if(isset($_REQUEST['wp_rejected_user_agent']) && $valid_nonce) {
550	$text = wp_cache_sanitize_value($_REQUEST['wp_rejected_user_agent'], $cache_rejected_user_agent);
551	wp_cache_replace_line('^ *\$cache_rejected_user_agent', "\$cache_rejected_user_agent = $text;", $wp_cache_config_file);
552	}
553
554
555	echo '<br /><a name="user-agents"></a><fieldset style="border: 1px solid #aaa" class="options"><legend>Rejected User Agents</legend>';
556	echo "<p>Strings in the HTTP 'User Agent' header that prevent WP-Cache from
557	caching bot, spiders, and crawlers' requests.
558	Note that cached files are still sent to these request if they already exists.</p>\n";
559	echo '<form name="wp_edit_rejected_user_agent" action="'. $_SERVER["REQUEST_URI"] . '" method="post">';
560	echo '<label for="wp_rejected_user_agent">Rejected UA strings</label>';
561	echo '<textarea name="wp_rejected_user_agent" cols="40" rows="4" style="width: 70%; font-size: 12px;" class="code">';
562	foreach ($cache_rejected_user_agent as $ua) {
563	echo wp_specialchars($ua) . "\n";
564	}
565	echo '</textarea> ';
566	echo '<div class="submit"><input type="submit" ' . SUBMITDISABLED . 'value="Save UA strings »" /></div>';
567	wp_nonce_field('wp-cache');
568	echo '</form>';
569	echo "</fieldset>\n";
570	}
571
572
573	function wp_cache_edit_rejected() {
574	global $cache_acceptable_files, $cache_rejected_uri, $wp_cache_config_file, $valid_nonce;
575
576	if(isset($_REQUEST['wp_rejected_uri']) && $valid_nonce) {
577	$text = wp_cache_sanitize_value($_REQUEST['wp_rejected_uri'], $cache_rejected_uri);
578	wp_cache_replace_line('^ *\$cache_rejected_uri', "\$cache_rejected_uri = $text;", $wp_cache_config_file);
579	}
580
581
582	echo "<p>Add here strings (not a filename) that forces a page not to be cached. For example, if your URLs include year and you dont want to cache last year posts, it's enough to specify the year, i.e. '/2004/'. WP-Cache will search if that string is part of the URI and if so, it will not cache that page.</p>\n";
583	echo '<form name="wp_edit_rejected" action="'. $_SERVER["REQUEST_URI"] . '" method="post">';
584	echo '<label for="wp_rejected_uri">Rejected URIs</label>';
585	echo '<textarea name="wp_rejected_uri" cols="40" rows="4" style="width: 70%; font-size: 12px;" class="code">';
586	foreach ($cache_rejected_uri as $file) {
587	echo wp_specialchars($file) . "\n";
588	}
589	echo '</textarea> ';
590	echo '<div class="submit"><input type="submit" ' . SUBMITDISABLED . 'value="Save strings »" /></div>';
591	wp_nonce_field('wp-cache');
592	echo "</form>\n";
593	}
594
595	function wp_cache_edit_accepted() {
596	global $cache_acceptable_files, $cache_rejected_uri, $wp_cache_config_file, $valid_nonce;
597
598	if(isset($_REQUEST['wp_accepted_files']) && $valid_nonce) {
599	$text = wp_cache_sanitize_value($_REQUEST['wp_accepted_files'], $cache_acceptable_files);
600	wp_cache_replace_line('^ *\$cache_acceptable_files', "\$cache_acceptable_files = $text;", $wp_cache_config_file);
601	}
602
603
604	echo "<p>Add here those filenames that can be cached, even if they match one of the rejected substring specified above.</p>\n";
605	echo '<form name="wp_edit_accepted" action="'. $_SERVER["REQUEST_URI"] . '" method="post">';
606	echo '<label for="wp_accepted_files">Accepted files</label>';
607	echo '<textarea name="wp_accepted_files" cols="40" rows="8" style="width: 70%; font-size: 12px;" class="code">';
608	foreach ($cache_acceptable_files as $file) {
609	echo wp_specialchars($file) . "\n";
610	}
611	echo '</textarea> ';
612	echo '<div class="submit"><input type="submit" ' . SUBMITDISABLED . 'value="Save files »" /></div>';
613	wp_nonce_field('wp-cache');
614	echo "</form>\n";
615	}
616
617	function wp_cache_enable() {
618	global $wp_cache_config_file, $cache_enabled, $supercachedir;
619
620	if(get_option('gzipcompression')) {
621	echo "<b>Error: GZIP compression is enabled, disable it if you want to enable wp-cache.</b><br /><br />";
622	return false;
623	}
624	if( wp_cache_replace_line('^ *\$cache_enabled', '$cache_enabled = true;', $wp_cache_config_file) ) {
625	$cache_enabled = true;
626	}
627	wp_super_cache_enable();
628	}
629
630	function wp_cache_disable() {
631	global $cache_path, $wp_cache_config_file, $cache_enabled, $supercachedir, $cache_path;
632
633	if (wp_cache_replace_line('^ *\$cache_enabled', '$cache_enabled = false;', $wp_cache_config_file)) {
634	$cache_enabled = false;
635	}
636	wp_super_cache_disable();
637	sleep( 1 ); // allow existing processes to write to the supercachedir and then delete it
638	if (function_exists ('prune_super_cache') && is_dir( $supercachedir ) ) {
639	prune_super_cache( $cache_path, true );
640	}
641	}
642	function wp_super_cache_enable() {
643	global $supercachedir, $wp_cache_config_file, $super_cache_enabled;
644
645	if( is_dir( $supercachedir . ".disabled" ) )
646	rename( $supercachedir . ".disabled", $supercachedir );
647	wp_cache_replace_line('^ *\$super_cache_enabled', '$super_cache_enabled = true;', $wp_cache_config_file);
648	$super_cache_enabled = true;
649	}
650
651	function wp_super_cache_disable() {
652	global $supercachedir, $wp_cache_config_file, $super_cache_enabled;
653
654	wp_cache_replace_line('^ *\$super_cache_enabled', '$super_cache_enabled = false;', $wp_cache_config_file);
655	if( is_dir( $supercachedir ) )
656	rename( $supercachedir, $supercachedir . ".disabled" );
657	$super_cache_enabled = false;
658	}
659
660	function wp_cache_is_enabled() {
661	global $wp_cache_config_file;
662
663	if(get_option('gzipcompression')) {
664	echo "<b>Warning</b>: GZIP compression is enabled in Wordpress, wp-cache will be bypassed until you disable gzip compression.<br />";
665	return false;
666	}
667	$lines = file($wp_cache_config_file);
668	foreach($lines as $line) {
669	if (preg_match('/^ \$cache_enabled = true ;/', $line))
670	return true;
671	}
672	return false;
673	}
674
675
676	function wp_cache_replace_line($old, $new, $my_file) {
677	if (!is_writable($my_file)) {
678	echo "Error: file $my_file is not writable.<br />\n";
679	return false;
680	}
681	$found = false;
682	$lines = file($my_file);
683	foreach($lines as $line) {
684	if ( preg_match("/$old/", $line)) {
685	$found = true;
686	break;
687	}
688	}
689	if ($found) {
690	$fd = fopen($my_file, 'w');
691	foreach($lines as $line) {
692	if ( !preg_match("/$old/", $line))
693	fputs($fd, $line);
694	else {
695	fputs($fd, "$new //Added by WP-Cache Manager\n");
696	}
697	}
698	fclose($fd);
699	return true;
700	}
701	$fd = fopen($my_file, 'w');
702	$done = false;
703	foreach($lines as $line) {
704	if ( $done \|\| !preg_match('/^define\|\$\|\?>/', $line))
705	fputs($fd, $line);
706	else {
707	fputs($fd, "$new //Added by WP-Cache Manager\n");
708	fputs($fd, $line);
709	$done = true;
710	}
711	}
712	fclose($fd);
713	return true;
714	/*
715	copy($my_file, $my_file . "-prev");
716	rename($my_file . '-new', $my_file);
717	*/
718	}
719
720	function wp_cache_verify_cache_dir() {
721	global $cache_path;
722
723	$dir = dirname($cache_path);
724	if ( !file_exists($cache_path) ) {
725	if ( !is_writable( $dir ) \|\| !($dir = mkdir( $cache_path ) ) ) {
726	echo "<b>Error:</b> Your cache directory (<b>$cache_path</b>) did not exist and couldn't be created by the web server. <br /> Check $dir permissions.";
727	return false;
728	}
729	}
730	if ( !is_writable($cache_path)) {
731	echo "<b>Error:</b> Your cache directory (<b>$cache_path</b>) or <b>$dir</b> need to be writable for this plugin to work. <br /> Double-check it.";
732	return false;
733	}
734
735	if ( '/' != substr($cache_path, -1)) {
736	$cache_path .= '/';
737	}
738
739	@mkdir( $cache_path . 'meta' );
740
741	return true;
742	}
743
744	function wp_cache_verify_config_file() {
745	global $wp_cache_config_file, $wp_cache_config_file_sample;
746
747	$new = false;
748	$dir = dirname($wp_cache_config_file);
749
750	if ( file_exists($wp_cache_config_file) ) {
751	$lines = join( ' ', file( $wp_cache_config_file ) );
752	if( strpos( $lines, 'WPCACHEHOME' ) === false ) {
753	if( is_writable( $wp_cache_config_file ) ) {
754	@unlink( $wp_cache_config_file );
755	} else {
756	echo "<b>Error:</b> Your WP-Cache config file (<b>$wp_cache_config_file</b>) is out of date and not writable by the Web server.<br />Please delete it and refresh this page.";
757	return false;
758	}
759	}
760	} elseif( !is_writable($dir)) {
761	echo "<b>Error:</b> Configuration file missing and wp-content directory (<b>$dir</b>) is not writable by the Web server.<br />Check its permissions.";
762	return false;
763	}
764
765	if ( !file_exists($wp_cache_config_file) ) {
766	if ( !file_exists($wp_cache_config_file_sample) ) {
767	echo "<b>Error:</b> Sample WP-Cache config file (<b>$wp_cache_config_file_sample</b>) does not exist.<br />Verify you installation.";
768	return false;
769	}
770	copy($wp_cache_config_file_sample, $wp_cache_config_file);
771	if( is_file( dirname(__FILE__) . '/wp-cache-config-sample.php' ) ) {
772	wp_cache_replace_line('WPCACHEHOME', "define( 'WPCACHEHOME', ABSPATH . " . str_replace( '\\', '/', str_replace( ABSPATH, ' "', dirname(__FILE__) ) ) . "/\" );", $wp_cache_config_file);
773	} elseif( is_file( dirname(__FILE__) . '/wp-super-cache/wp-cache-config-sample.php' ) ) {
774	wp_cache_replace_line('WPCACHEHOME', "define( 'WPCACHEHOME', ABSPATH . " . str_replace( '\\', '/', str_replace( ABSPATH, ' "', dirname(__FILE__) ) ) . "/wp-super-cache/\" );", $wp_cache_config_file);
775	}
776	$new = true;
777	}
778	require($wp_cache_config_file);
779	return true;
780	}
781
782	function wp_cache_check_link() {
783	global $wp_cache_link, $wp_cache_file;
784
785	if( file_exists($wp_cache_link) ) {
786	if( strpos( join( "\n", file( $wp_cache_link ) ), 'WPCACHEHOME' ) ) {
787	// read the file and verify it's a super-cache file and not the wp-cache one.
788	return true;
789	} else {
790	// remove the old version
791	@unlink($wp_cache_link);
792	}
793	}
794
795	$ret = true;
796	if ( basename(@readlink($wp_cache_link)) != basename($wp_cache_file)) {
797	@unlink($wp_cache_link);
798	if( function_exists( 'symlink' ) ) {
799	if( !@symlink ($wp_cache_file, $wp_cache_link) ) {
800	$ret = false;
801	}
802	} elseif( !@copy( $wp_cache_file, $wp_cache_link ) ) {
803	$ret = false;
804	}
805	if( !$ret ) {
806	echo "<code>advanced-cache.php</code> does not exist<br />";
807	echo "Create it by executing: <br /><code>ln -s $wp_cache_file $wp_cache_link</code><br /> in your server<br />";
808	echo "Or by copying $wp_cache_file to $wp_cache_link.<br />";
809	return false;
810	}
811	}
812	return true;
813	}
814
815	function wp_cache_check_global_config() {
816
817	$global = ABSPATH . 'wp-config.php';
818
819	$lines = file($global);
820	foreach($lines as $line) {
821	if (preg_match('/^ define $ \'WP_CACHE\' , true $ *;/', $line)) {
822	return true;
823	}
824	}
825	$line = 'define(\'WP_CACHE\', true);';
826	if (!is_writable($global) \|\| !wp_cache_replace_line('define \( \'WP_CACHE\'', $line, $global) ) {
827	echo "<b>Error: WP_CACHE is not enabled</b> in your <code>wp-config.php</code> file and I couldn't modified it.<br />";
828	echo "Edit <code>$global</code> and add the following line: <br /><code>define('WP_CACHE', true);</code><br />Otherwise, <b>WP-Cache will not be executed</b> by Wordpress core. <br />";
829	return false;
830	}
831	return true;
832	}
833
834	function wp_cache_files() {
835	global $cache_path, $file_prefix, $cache_max_time, $super_cache_max_time, $valid_nonce, $supercachedir, $cache_enabled, $super_cache_enabled;
836
837	if ( '/' != substr($cache_path, -1)) {
838	$cache_path .= '/';
839	}
840
841	if ( $valid_nonce ) {
842	if(isset($_REQUEST['wp_delete_cache'])) {
843	wp_cache_clean_cache($file_prefix);
844	}
845	if(isset($_REQUEST['wp_delete_cache_file'])) {
846	wp_cache_clean_cache($_REQUEST['wp_delete_cache_file']);
847	}
848	if(isset($_REQUEST['wp_delete_expired'])) {
849	wp_cache_clean_expired($file_prefix);
850	}
851	}
852	if(isset($_REQUEST['wp_list_cache'])) {
853	$list_files = true;
854	$list_mess = "Update list";
855	} else
856	$list_mess = "List files";
857
858	echo '<br /><a name="list"></a><fieldset style="border: 1px solid #aaa" class="options"><legend>Cache contents</legend>';
859	/*
860	echo '<form name="wp_cache_content_list" action="'. $_SERVER["REQUEST_URI"] . '#list" method="post">';
861	echo '<input type="hidden" name="wp_list_cache" />';
862	echo '<div class="submit"><input type="submit" ' . SUBMITDISABLED . 'value="'.$list_mess.' »" /></div>';
863	echo "</form>\n";
864	*/
865
866	$list_files = false; // it doesn't list supercached files, and removing single pages is buggy
867	$count = 0;
868	$expired = 0;
869	$now = time();
870	if ( ($handle = @opendir( $cache_path . 'meta/' )) ) {
871	if ($list_files) echo "<table cellspacing=\"0\" cellpadding=\"5\">";
872	while ( false !== ($file = readdir($handle))) {
873	if ( preg_match("/^$file_prefix.*\.meta/", $file) ) {
874	$this_expired = false;
875	$content_file = preg_replace("/meta$/", "html", $file);
876	$mtime = filemtime($cache_path . 'meta/' . $file);
877	if ( ! ($fsize = @filesize($cache_path.$content_file)) )
878	continue; // .meta does not exists
879	$fsize = intval($fsize/1024);
880	$age = $now - $mtime;
881	if ( $age > $cache_max_time) {
882	$expired++;
883	$this_expired = true;
884	}
885	$count++;
886	if ($list_files) {
887	$meta = new CacheMeta;
888	$meta = unserialize(file_get_contents($cache_path . 'meta/' . $file));
889	echo $flip ? '<tr style="background: #EAEAEA;">' : '<tr>';
890	$flip = !$flip;
891	echo '<td><a href="http://' . $meta->uri . '" target="_blank" >';
892	echo $meta->uri . "</a></td>";
893	if ($this_expired) echo "<td><span style='color:red'>$age secs</span></td>";
894	else echo "<td>$age secs</td>";
895	echo "<td>$fsize KB</td>";
896	echo '<td><form name="wp_delete_cache_file" action="'. $_SERVER["REQUEST_URI"] . '#list" method="post">';
897	echo '<input type="hidden" name="wp_list_cache" />';
898	echo '<input type="hidden" name="wp_delete_cache_file" value="'.preg_replace("/^(.*)\.meta$/", "$1", $file).'" />';
899	echo '<div class="submit"><input id="deletepost" ' . SUBMITDISABLED . 'type="submit" value="Remove" /></div>';
900	wp_nonce_field('wp-cache');
901	echo "</form></td></tr>\n";
902	}
903	}
904	}
905	closedir($handle);
906	if ($list_files) echo "</table>";
907	}
908	if( $cache_enabled == true && $super_cache_enabled == true ) {
909	$now = time();
910	$sizes = array( 'expired' => 0, 'cached' => 0, 'ts' => 0 );
911
912	if (is_dir($supercachedir)) {
913	$entries = glob($supercachedir. '/*');
914	foreach ($entries as $entry) {
915	if ($entry != '.' && $entry != '..') {
916	$sizes = wpsc_dirsize( $entry, $sizes );
917	}
918	}
919	} else {
920	if(is_file($supercachedir) && filemtime( $supercachedir ) + $super_cache_max_time <= $now )
921	$sizes[ 'expired' ] ++;
922	}
923	$sizes[ 'ts' ] = time();
924	}
925
926	echo "<p><strong>WP-Cache</strong></p>";
927	echo "<ul><li>$count cached pages</li>";
928	echo "<li>$expired expired pages</li></ul>";
929	if( $cache_enabled == true && $super_cache_enabled == true ) {
930	echo "<p><strong>WP-Super-Cache</strong></p>";
931	echo "<ul><li>" . intval($sizes['cached']/2) . " cached pages</li>";
932	$age = intval(($now - $sizes['ts'])/60);
933	echo "<li>" . intval($sizes['expired']/2) . " expired pages.</li></ul>";
934	}
935
936	echo '<form name="wp_cache_content_expired" action="'. $_SERVER["REQUEST_URI"] . '#list" method="post">';
937	echo '<input type="hidden" name="wp_delete_expired" />';
938	echo '<div class="submit"><input type="submit" ' . SUBMITDISABLED . 'value="Delete expired »" /></div>';
939	wp_nonce_field('wp-cache');
940	echo "</form>\n";
941
942
943	echo '<form name="wp_cache_content_delete" action="'. $_SERVER["REQUEST_URI"] . '#list" method="post">';
944	echo '<input type="hidden" name="wp_delete_cache" />';
945	echo '<div class="submit"><input id="deletepost" type="submit" ' . SUBMITDISABLED . 'value="Delete cache »" /></div>';
946	wp_nonce_field('wp-cache');
947	echo "</form>\n";
948
949	echo '</fieldset>';
950	}
951
952	function wpsc_dirsize($directory, $sizes) {
953	global $super_cache_max_time;
954	$now = time();
955
956	if (is_dir($directory)) {
957	$entries = glob($directory. '/*');
958	if( is_array( $entries ) && !empty( $entries ) ) foreach ($entries as $entry) {
959	if ($entry != '.' && $entry != '..') {
960	$sizes = wpsc_dirsize($entry, $sizes);
961	}
962	}
963	} else {
964	if(is_file($directory) ) {
965	if( filemtime( $directory ) + $super_cache_max_time <= $now ) {
966	$sizes[ 'expired' ]+=1;
967	} else {
968	$sizes[ 'cached' ]+=1;
969	}
970	}
971	}
972	return $sizes;
973	}
974
975
976	function wp_cache_clean_cache($file_prefix) {
977	global $cache_path, $supercachedir;
978
979	// If phase2 was compiled, use its function to avoid race-conditions
980	if(function_exists('wp_cache_phase2_clean_cache')) {
981	if (function_exists ('prune_super_cache')) {
982	if( is_dir( $supercachedir ) ) {
983	prune_super_cache( $supercachedir, true );
984	} elseif( is_dir( $supercachedir . '.disabled' ) ) {
985	prune_super_cache( $supercachedir . '.disabled', true );
986	}
987	prune_super_cache( $cache_path, true );
988	$_POST[ 'super_cache_stats' ] = 1; // regenerate super cache stats;
989	}
990	return wp_cache_phase2_clean_cache($file_prefix);
991	}
992
993	$expr = "/^$file_prefix/";
994	if ( ($handle = opendir( $cache_path )) ) {
995	while ( false !== ($file = readdir($handle))) {
996	if ( preg_match($expr, $file) ) {
997	unlink($cache_path . $file);
998	unlink($cache_path . 'meta/' . str_replace( '.html', '.term', $file ) );
999	}
1000	}
1001	closedir($handle);
1002	}
1003	}
1004
1005	function wp_cache_clean_expired($file_prefix) {
1006	global $cache_path, $cache_max_time;
1007
1008	// If phase2 was compiled, use its function to avoid race-conditions
1009	if(function_exists('wp_cache_phase2_clean_expired')) {
1010	if (function_exists ('prune_super_cache')) {
1011	$dir = $cache_path . 'supercache/' . preg_replace('/:.*$/', '', $_SERVER["HTTP_HOST"]);
1012	if( is_dir( $dir ) ) {
1013	prune_super_cache( $dir );
1014	} elseif( is_dir( $dir . '.disabled' ) ) {
1015	prune_super_cache( $dir . '.disabled' );
1016	}
1017	$_POST[ 'super_cache_stats' ] = 1; // regenerate super cache stats;
1018	}
1019	return wp_cache_phase2_clean_expired($file_prefix);
1020	}
1021
1022	$expr = "/^$file_prefix/";
1023	$now = time();
1024	if ( ($handle = opendir( $cache_path )) ) {
1025	while ( false !== ($file = readdir($handle))) {
1026	if ( preg_match($expr, $file) &&
1027	(filemtime($cache_path . $file) + $cache_max_time) <= $now) {
1028	unlink($cache_path . $file);
1029	unlink($cache_path . 'meta/' . str_replace( '.html', '.term', $file ) );
1030	}
1031	}
1032	closedir($handle);
1033	}
1034	}
1035
1036	add_action('admin_menu', 'wp_cache_add_pages');
1037
1038	function wpsc_remove_marker( $filename, $marker ) {
1039	if (!file_exists( $filename ) \|\| is_writeable( $filename ) ) {
1040	if (!file_exists( $filename ) ) {
1041	return '';
1042	} else {
1043	$markerdata = explode( "\n", implode( '', file( $filename ) ) );
1044	}
1045
1046	$f = fopen( $filename, 'w' );
1047	$foundit = false;
1048	if ( $markerdata ) {
1049	$state = true;
1050	foreach ( $markerdata as $n => $markerline ) {
1051	if (strpos($markerline, '# BEGIN ' . $marker) !== false)
1052	$state = false;
1053	if ( $state ) {
1054	if ( $n + 1 < count( $markerdata ) )
1055	fwrite( $f, "{$markerline}\n" );
1056	else
1057	fwrite( $f, "{$markerline}" );
1058	}
1059	if (strpos($markerline, '# END ' . $marker) !== false) {
1060	$state = true;
1061	}
1062	}
1063	}
1064	return true;
1065	} else {
1066	return false;
1067	}
1068	}
1069
1070	function wp_super_cache_footer() {
1071	?><p><?php bloginfo('name'); ?> is Digg proof thanks to caching by <a href="http://ocaoimh.ie/wp-super-cache/">WP Super Cache</a>!</p><?php
1072	}
1073	if( isset( $wp_cache_hello_world ) && $wp_cache_hello_world )
1074	add_action( 'wp_footer', 'wp_super_cache_footer' );
1075
1076	if( get_option( 'gzipcompression' ) )
1077	update_option( 'gzipcompression', 0 );
1078
1079	?>
1080