autoptimize / classes / autoptimizeCache.php

autoptimizeCache.php in Autoptimize 2.2.1, 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	$phpcode = file_get_contents(AUTOPTIMIZE_PLUGIN_DIR.'/config/'.$file);
49	$phpcode = str_replace(array('%%CONTENT%%','exit;'),array($mime,''),$phpcode);
50	file_put_contents($this->cachedir.$this->filename,$phpcode, LOCK_EX);
51	file_put_contents($this->cachedir.$this->filename.'.none',$code, LOCK_EX);
52	if(!$this->delayed) {
53	// Compress now!
54	file_put_contents($this->cachedir.$this->filename.'.deflate',gzencode($code,9,FORCE_DEFLATE), LOCK_EX);
55	file_put_contents($this->cachedir.$this->filename.'.gzip',gzencode($code,9,FORCE_GZIP), LOCK_EX);
56	}
57	} else {
58	// Write code to cache without doing anything else
59	file_put_contents($this->cachedir.$this->filename,$code, LOCK_EX);
60	if (apply_filters('autoptimize_filter_cache_create_static_gzip', false)) {
61	// Create an additional cached gzip file
62	file_put_contents($this->cachedir.$this->filename.'.gz', gzencode($code,9,FORCE_GZIP), LOCK_EX);
63	}
64	}
65	}
66
67	public function getname() {
68	apply_filters('autoptimize_filter_cache_getname',AUTOPTIMIZE_CACHE_URL.$this->filename);
69	return $this->filename;
70	}
71
72	static function clearall() {
73	if(!autoptimizeCache::cacheavail()) {
74	return false;
75	}
76
77	// scan the cachedirs
78	foreach (array("","js","css") as $scandirName) {
79	$scan[$scandirName] = scandir(AUTOPTIMIZE_CACHE_DIR.$scandirName);
80	}
81
82	// clear the cachedirs
83	foreach ($scan as $scandirName=>$scanneddir) {
84	$thisAoCacheDir=rtrim(AUTOPTIMIZE_CACHE_DIR.$scandirName,"/")."/";
85	foreach($scanneddir as $file) {
86	if(!in_array($file,array('.','..')) && strpos($file,AUTOPTIMIZE_CACHEFILE_PREFIX) !== false && is_file($thisAoCacheDir.$file)) {
87	@unlink($thisAoCacheDir.$file);
88	}
89	}
90	}
91
92	@unlink(AUTOPTIMIZE_CACHE_DIR."/.htaccess");
93	delete_transient("autoptimize_stats");
94
95	// add cachepurged action
96	if (!function_exists('autoptimize_do_cachepurged_action')) {
97	function autoptimize_do_cachepurged_action() {
98	do_action("autoptimize_action_cachepurged");
99	}
100	}
101	add_action("shutdown","autoptimize_do_cachepurged_action",11);
102
103	// try to purge caching plugins cache-files?
104	include_once(AUTOPTIMIZE_PLUGIN_DIR.'classlesses/autoptimizePageCacheFlush.php');
105	add_action("autoptimize_action_cachepurged","autoptimize_flush_pagecache",10,0);
106
107	// warm cache (part of speedupper)?
108	if ( apply_filters('autoptimize_filter_speedupper', true) ) {
109	$warmCacheUrl = site_url()."/?ao_speedup_cachebuster=".rand(1,100000);
110	$warmCache = @wp_remote_get($warmCacheUrl);
111	unset($warmCache);
112	}
113
114	return true;
115	}
116
117	static function stats() {
118	$AOstats=get_transient("autoptimize_stats");
119
120	if (empty($AOstats)) {
121	// Cache not available :(
122	if(!autoptimizeCache::cacheavail()) {
123	return 0;
124	}
125
126	// Count cached info
127	$count = 0;
128	$size = 0;
129
130	// scan the cachedirs
131	foreach (array("","js","css") as $scandirName) {
132	$scan[$scandirName] = scandir(AUTOPTIMIZE_CACHE_DIR.$scandirName);
133	}
134
135	foreach ($scan as $scandirName=>$scanneddir) {
136	$thisAoCacheDir=rtrim(AUTOPTIMIZE_CACHE_DIR.$scandirName,"/")."/";
137	foreach($scanneddir as $file) {
138	if(!in_array($file,array('.','..')) && strpos($file,AUTOPTIMIZE_CACHEFILE_PREFIX) !== false) {
139	if(is_file($thisAoCacheDir.$file)) {
140	if(AUTOPTIMIZE_CACHE_NOGZIP && (strpos($file,'.js') !== false \|\| strpos($file,'.css') !== false \|\| strpos($file,'.img') !== false \|\| strpos($file,'.txt') !== false )) {
141	$count++;
142	} elseif(!AUTOPTIMIZE_CACHE_NOGZIP && strpos($file,'.none') !== false) {
143	$count++;
144	}
145	$size+=filesize($thisAoCacheDir.$file);
146	}
147	}
148	}
149	}
150	$AOstats=array($count,$size,time());
151	if ($count>100) {
152	set_transient("autoptimize_stats",$AOstats,HOUR_IN_SECONDS);
153	}
154	}
155	// print the number of instances
156	return $AOstats;
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><head><meta name="robots" content="noindex, nofollow"></head><body>Generated by <a href="http://wordpress.org/extend/plugins/autoptimize/" rel="nofollow">Autoptimize</a></body></html>');
175	}
176
177	/** write .htaccess here to overrule wp_super_cache */
178	$htAccess=AUTOPTIMIZE_CACHE_DIR.'/.htaccess';
179	if(!is_file($htAccess)) {
180	/**
181	* create wp-content/AO_htaccess_tmpl with
182	* whatever htaccess rules you might need
183	* if you want to override default AO htaccess
184	*/
185	$htaccess_tmpl=WP_CONTENT_DIR."/AO_htaccess_tmpl";
186	if (is_file($htaccess_tmpl)) {
187	$htAccessContent=file_get_contents($htaccess_tmpl);
188	} else if (is_multisite() \|\| AUTOPTIMIZE_CACHE_NOGZIP == false) {
189	$htAccessContent='<IfModule mod_expires.c>
190	ExpiresActive On
191	ExpiresByType text/css A30672000
192	ExpiresByType text/javascript A30672000
193	ExpiresByType application/javascript A30672000
194	</IfModule>
195	<IfModule mod_headers.c>
196	Header append Cache-Control "public, immutable"
197	</IfModule>
198	<IfModule mod_deflate.c>
199	<FilesMatch "\.(js\|css)$">
200	SetOutputFilter DEFLATE
201	</FilesMatch>
202	</IfModule>
203	<IfModule mod_authz_core.c>
204	<Files *.php>
205	Require all granted
206	</Files>
207	</IfModule>
208	<IfModule !mod_authz_core.c>
209	<Files *.php>
210	Order allow,deny
211	Allow from all
212	</Files>
213	</IfModule>';
214	} else {
215	$htAccessContent='<IfModule mod_expires.c>
216	ExpiresActive On
217	ExpiresByType text/css A30672000
218	ExpiresByType text/javascript A30672000
219	ExpiresByType application/javascript A30672000
220	</IfModule>
221	<IfModule mod_headers.c>
222	Header append Cache-Control "public, immutable"
223	</IfModule>
224	<IfModule mod_deflate.c>
225	<FilesMatch "\.(js\|css)$">
226	SetOutputFilter DEFLATE
227	</FilesMatch>
228	</IfModule>
229	<IfModule mod_authz_core.c>
230	<Files *.php>
231	Require all denied
232	</Files>
233	</IfModule>
234	<IfModule !mod_authz_core.c>
235	<Files *.php>
236	Order deny,allow
237	Deny from all
238	</Files>
239	</IfModule>';
240	}
241	@file_put_contents($htAccess,$htAccessContent);
242	}
243
244	// All OK
245	return true;
246	}
247
248	static function checkCacheDir($dir) {
249	// Check and create if not exists
250	if(!file_exists($dir)) {
251	@mkdir($dir,0775,true);
252	if(!file_exists($dir)) {
253	return false;
254	}
255	}
256
257	// check if we can now write
258	if(!is_writable($dir)) {
259	return false;
260	}
261
262	// and write index.html here to avoid prying eyes
263	$indexFile=$dir.'/index.html';
264	if(!is_file($indexFile)) {
265	@file_put_contents($indexFile,'<html><head><meta name="robots" content="noindex, nofollow"></head><body>Generated by <a href="http://wordpress.org/extend/plugins/autoptimize/" rel="nofollow">Autoptimize</a></body></html>');
266	}
267
268	return true;
269	}
270	}
271