autoptimize / classes / autoptimizeCache.php

autoptimizeCache.php in Autoptimize 1.9.3, at classes/autoptimizeCache.php

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1	<?php
2	if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
3
4	class autoptimizeCache {
5	private $filename;
6	private $mime;
7	private $cachedir;
8	private $delayed;
9
10	public function __construct($md5,$ext='php') {
11	$this->cachedir = AUTOPTIMIZE_CACHE_DIR;
12	$this->delayed = AUTOPTIMIZE_CACHE_DELAY;
13	$this->nogzip = AUTOPTIMIZE_CACHE_NOGZIP;
14	if($this->nogzip == false) {
15	$this->filename = AUTOPTIMIZE_CACHEFILE_PREFIX.$md5.'.php';
16	} else {
17	if (in_array($ext, array("js","css"))) {
18	$this->filename = $ext.'/'.AUTOPTIMIZE_CACHEFILE_PREFIX.$md5.'.'.$ext;
19	} else {
20	$this->filename = '/'.AUTOPTIMIZE_CACHEFILE_PREFIX.$md5.'.'.$ext;
21	}
22	}
23	}
24
25	public function check() {
26	if(!file_exists($this->cachedir.$this->filename)) {
27	// No cached file, sorry
28	return false;
29	}
30	// Cache exists!
31	return true;
32	}
33
34	public function retrieve() {
35	if($this->check()) {
36	if($this->nogzip == false) {
37	return file_get_contents($this->cachedir.$this->filename.'.none');
38	} else {
39	return file_get_contents($this->cachedir.$this->filename);
40	}
41	}
42	return false;
43	}
44
45	public function cache($code,$mime) {
46	if($this->nogzip == false) {
47	$file = ($this->delayed ? 'delayed.php' : 'default.php');
48	$phpcode = file_get_contents(WP_PLUGIN_DIR.'/autoptimize/config/'.$file);
49	$phpcode = str_replace(array('%%CONTENT%%','exit;'),array($mime,''),$phpcode);
50	file_put_contents($this->cachedir.$this->filename,$phpcode);
51	file_put_contents($this->cachedir.$this->filename.'.none',$code);
52	if(!$this->delayed) {
53	// Compress now!
54	file_put_contents($this->cachedir.$this->filename.'.deflate',gzencode($code,9,FORCE_DEFLATE));
55	file_put_contents($this->cachedir.$this->filename.'.gzip',gzencode($code,9,FORCE_GZIP));
56	}
57	} else {
58	// Write code to cache without doing anything else
59	file_put_contents($this->cachedir.$this->filename,$code);
60	}
61	}
62
63	public function getname() {
64	return $this->filename;
65	}
66
67	static function clearall() {
68	if(!autoptimizeCache::cacheavail()) {
69	return false;
70	}
71
72	// scan the cachedirs
73	foreach (array("","js","css") as $scandirName) {
74	$scan[$scandirName] = scandir(AUTOPTIMIZE_CACHE_DIR.$scandirName);
75	}
76
77	// clear the cachedirs
78	foreach ($scan as $scandirName=>$scanneddir) {
79	$thisAoCacheDir=rtrim(AUTOPTIMIZE_CACHE_DIR.$scandirName,"/")."/";
80	foreach($scanneddir as $file) {
81	if(!in_array($file,array('.','..')) && strpos($file,AUTOPTIMIZE_CACHEFILE_PREFIX) !== false && is_file($thisAoCacheDir.$file)) {
82	@unlink($thisAoCacheDir.$file);
83	}
84	}
85	}
86
87	@unlink(AUTOPTIMIZE_CACHE_DIR."/.htaccess");
88
89	// Do we need to clean any caching plugins cache-files?
90	if(function_exists('wp_cache_clear_cache')) {
91	if (is_multisite()) {
92	$blog_id = get_current_blog_id();
93	wp_cache_clear_cache($blog_id);
94	} else {
95	wp_cache_clear_cache();
96	}
97	} else if ( function_exists('w3tc_pgcache_flush') ) {
98	w3tc_pgcache_flush(); // w3 total cache
99	} else if ( function_exists('hyper_cache_invalidate') ) {
100	hyper_cache_invalidate(); // hypercache
101	} else if ( function_exists('wp_fast_cache_bulk_delete_all') ) {
102	wp_fast_cache_bulk_delete_all(); // wp fast cache
103	} else if (class_exists("WpFastestCache")) {
104	$wpfc = new WpFastestCache(); // wp fastest cache
105	$wpfc -> deleteCache();
106	} else if ( class_exists("c_ws_plugin__qcache_purging_routines") ) {
107	c_ws_plugin__qcache_purging_routines::purge_cache_dir(); // quick cache
108	} else if(file_exists(WP_CONTENT_DIR.'/wp-cache-config.php') && function_exists('prune_super_cache')){
109	// fallback for WP-Super-Cache
110	global $cache_path;
111	if (is_multisite()) {
112	$blog_id = get_current_blog_id();
113	prune_super_cache( get_supercache_dir( $blog_id ), true );
114	prune_super_cache( $cache_path . 'blogs/', true );
115	} else {
116	prune_super_cache($cache_path.'supercache/',true);
117	prune_super_cache($cache_path,true);
118	}
119	} else {
120	// fallback; schedule event and try to clear there
121	wp_schedule_single_event( time() + 1, 'ao_flush_pagecache' , array(time()));
122	}
123	return true;
124	}
125
126	static function stats() {
127	// Cache not available :(
128	if(!autoptimizeCache::cacheavail()) {
129	return 0;
130	}
131
132	// Count cached info
133	$count = 0;
134
135	// scan the cachedirs
136	foreach (array("","js","css") as $scandirName) {
137	$scan[$scandirName] = scandir(AUTOPTIMIZE_CACHE_DIR.$scandirName);
138	}
139
140	foreach ($scan as $scandirName=>$scanneddir) {
141	$thisAoCacheDir=rtrim(AUTOPTIMIZE_CACHE_DIR.$scandirName,"/")."/";
142	foreach($scanneddir as $file) {
143	if(!in_array($file,array('.','..')) && strpos($file,'autoptimize') !== false) {
144	if(is_file($thisAoCacheDir.$file)) {
145	if(AUTOPTIMIZE_CACHE_NOGZIP && (strpos($file,'.js') !== false \|\| strpos($file,'.css') !== false)) {
146	$count++;
147	} elseif(!AUTOPTIMIZE_CACHE_NOGZIP && strpos($file,'.none') !== false) {
148	$count++;
149	}
150	}
151	}
152	}
153	}
154
155	// print the number of instances
156	return $count;
157	}
158
159	static function cacheavail() {
160	if(!defined('AUTOPTIMIZE_CACHE_DIR')) {
161	// We didn't set a cache
162	return false;
163	}
164
165	foreach (array("","js","css") as $checkDir) {
166	if(!autoptimizeCache::checkCacheDir(AUTOPTIMIZE_CACHE_DIR.$checkDir)) {
167	return false;
168	}
169	}
170
171	/** write index.html here to avoid prying eyes */
172	$indexFile=AUTOPTIMIZE_CACHE_DIR.'/index.html';
173	if(!is_file($indexFile)) {
174	@file_put_contents($indexFile,'<html><body>Generated by <a href="http://wordpress.org/extend/plugins/autoptimize/">Autoptimize</a></body></html>');
175	}
176	/** write .htaccess here to overrule wp_super_cache */
177	$htAccess=AUTOPTIMIZE_CACHE_DIR.'/.htaccess';
178	if(!is_file($htAccess)) {
179	if (is_multisite() \|\| AUTOPTIMIZE_CACHE_NOGZIP == false) {
180
181	@file_put_contents($htAccess,'<IfModule mod_headers.c>
182	Header set Vary "Accept-Encoding"
183	Header set Cache-Control "max-age=10672000, must-revalidate"
184	</IfModule>
185	<IfModule mod_expires.c>
186	ExpiresActive On
187	ExpiresByType text/css A30672000
188	ExpiresByType text/javascript A30672000
189	ExpiresByType application/javascript A30672000
190	</IfModule>
191	<IfModule mod_deflate.c>
192	<FilesMatch "\.(js\|css)$">
193	SetOutputFilter DEFLATE
194	</FilesMatch>
195	</IfModule>
196	<IfModule mod_authz_core.c>
197	<Files *.php>
198	Require all granted
199	</Files>
200	</IfModule>
201	<IfModule !mod_authz_core.c>
202	<Files *.php>
203	Order allow,deny
204	Allow from all
205	</Files>
206	</IfModule>');
207	} else {
208	@file_put_contents($htAccess,'<IfModule mod_headers.c>
209	Header set Vary "Accept-Encoding"
210	Header set Cache-Control "max-age=10672000, must-revalidate"
211	</IfModule>
212	<IfModule mod_expires.c>
213	ExpiresActive On
214	ExpiresByType text/css A30672000
215	ExpiresByType text/javascript A30672000
216	ExpiresByType application/javascript A30672000
217	</IfModule>
218	<IfModule mod_deflate.c>
219	<FilesMatch "\.(js\|css)$">
220	SetOutputFilter DEFLATE
221	</FilesMatch>
222	</IfModule>
223	<IfModule mod_authz_core.c>
224	<Files *.php>
225	Require all denied
226	</Files>
227	</IfModule>
228	<IfModule !mod_authz_core.c>
229	<Files *.php>
230	Order deny,allow
231	Deny from all
232	</Files>
233	</IfModule>');
234	}
235	}
236	// All OK
237	return true;
238	}
239
240	static function checkCacheDir($dir) {
241	// Check and create if not exists
242	if(!file_exists($dir)) {
243	@mkdir($dir,0775,true);
244	if(!file_exists($dir)) {
245	return false;
246	}
247	}
248
249	// check if we can now write
250	if(!is_writable($dir)) {
251	return false;
252	}
253
254	// and write index.html here to avoid prying eyes
255	$indexFile=$dir.'/index.html';
256	if(!is_file($indexFile)) {
257	@file_put_contents($indexFile,'<html><body>Generated by <a href="http://wordpress.org/extend/plugins/autoptimize/">Autoptimize</a></body></html>');
258	}
259
260	return true;
261	}
262	}
263
264