autoptimize / classes / autoptimizeCache.php

autoptimizeCache.php in Autoptimize 2.1.2, at classes/autoptimizeCache.php

266 lines 9.5 KB

Raw Download Zip

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.$this->filename.'.gzip',gzencode($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	return true;
108	}
109
110	static function stats() {
111	$AOstats=get_transient("autoptimize_stats");
112
113	if (empty($AOstats)) {
114	// Cache not available :(
115	if(!autoptimizeCache::cacheavail()) {
116	return 0;
117	}
118
119	// Count cached info
120	$count = 0;
121	$size = 0;
122
123	// scan the cachedirs
124	foreach (array("","js","css") as $scandirName) {
125	$scan[$scandirName] = scandir(AUTOPTIMIZE_CACHE_DIR.$scandirName);
126	}
127
128	foreach ($scan as $scandirName=>$scanneddir) {
129	$thisAoCacheDir=rtrim(AUTOPTIMIZE_CACHE_DIR.$scandirName,"/")."/";
130	foreach($scanneddir as $file) {
131	if(!in_array($file,array('.','..')) && strpos($file,AUTOPTIMIZE_CACHEFILE_PREFIX) !== false) {
132	if(is_file($thisAoCacheDir.$file)) {
133	if(AUTOPTIMIZE_CACHE_NOGZIP && (strpos($file,'.js') !== false \|\| strpos($file,'.css') !== false \|\| strpos($file,'.img') !== false \|\| strpos($file,'.txt') !== false )) {
134	$count++;
135	} elseif(!AUTOPTIMIZE_CACHE_NOGZIP && strpos($file,'.none') !== false) {
136	$count++;
137	}
138	$size+=filesize($thisAoCacheDir.$file);
139	}
140	}
141	}
142	}
143	$AOstats=array($count,$size,time());
144	if ($count>100) {
145	set_transient("autoptimize_stats",$AOstats,HOUR_IN_SECONDS);
146	}
147	}
148	// print the number of instances
149	return $AOstats;
150	}
151
152	static function cacheavail() {
153	if(!defined('AUTOPTIMIZE_CACHE_DIR')) {
154	// We didn't set a cache
155	return false;
156	}
157
158	foreach (array("","js","css") as $checkDir) {
159	if(!autoptimizeCache::checkCacheDir(AUTOPTIMIZE_CACHE_DIR.$checkDir)) {
160	return false;
161	}
162	}
163
164	/** write index.html here to avoid prying eyes */
165	$indexFile=AUTOPTIMIZE_CACHE_DIR.'/index.html';
166	if(!is_file($indexFile)) {
167	@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>');
168	}
169
170	/** write .htaccess here to overrule wp_super_cache */
171	$htAccess=AUTOPTIMIZE_CACHE_DIR.'/.htaccess';
172	if(!is_file($htAccess)) {
173	/**
174	* create wp-content/AO_htaccess_tmpl with
175	* whatever htaccess rules you might need
176	* if you want to override default AO htaccess
177	*/
178	$htaccess_tmpl=WP_CONTENT_DIR."/AO_htaccess_tmpl";
179	if (is_file($htaccess_tmpl)) {
180	$htAccessContent=file_get_contents($htaccess_tmpl);
181	} else if (is_multisite() \|\| AUTOPTIMIZE_CACHE_NOGZIP == false) {
182	$htAccessContent='<IfModule mod_headers.c>
183	Header set Vary "Accept-Encoding"
184	Header set Cache-Control "max-age=10672000, must-revalidate"
185	</IfModule>
186	<IfModule mod_expires.c>
187	ExpiresActive On
188	ExpiresByType text/css A30672000
189	ExpiresByType text/javascript A30672000
190	ExpiresByType application/javascript A30672000
191	</IfModule>
192	<IfModule mod_deflate.c>
193	<FilesMatch "\.(js\|css)$">
194	SetOutputFilter DEFLATE
195	</FilesMatch>
196	</IfModule>
197	<IfModule mod_authz_core.c>
198	<Files *.php>
199	Require all granted
200	</Files>
201	</IfModule>
202	<IfModule !mod_authz_core.c>
203	<Files *.php>
204	Order allow,deny
205	Allow from all
206	</Files>
207	</IfModule>';
208	} else {
209	$htAccessContent='<IfModule mod_headers.c>
210	Header set Vary "Accept-Encoding"
211	Header set Cache-Control "max-age=10672000, must-revalidate"
212	</IfModule>
213	<IfModule mod_expires.c>
214	ExpiresActive On
215	ExpiresByType text/css A30672000
216	ExpiresByType text/javascript A30672000
217	ExpiresByType application/javascript A30672000
218	</IfModule>
219	<IfModule mod_deflate.c>
220	<FilesMatch "\.(js\|css)$">
221	SetOutputFilter DEFLATE
222	</FilesMatch>
223	</IfModule>
224	<IfModule mod_authz_core.c>
225	<Files *.php>
226	Require all denied
227	</Files>
228	</IfModule>
229	<IfModule !mod_authz_core.c>
230	<Files *.php>
231	Order deny,allow
232	Deny from all
233	</Files>
234	</IfModule>';
235	}
236	@file_put_contents($htAccess,$htAccessContent);
237	}
238
239	// All OK
240	return true;
241	}
242
243	static function checkCacheDir($dir) {
244	// Check and create if not exists
245	if(!file_exists($dir)) {
246	@mkdir($dir,0775,true);
247	if(!file_exists($dir)) {
248	return false;
249	}
250	}
251
252	// check if we can now write
253	if(!is_writable($dir)) {
254	return false;
255	}
256
257	// and write index.html here to avoid prying eyes
258	$indexFile=$dir.'/index.html';
259	if(!is_file($indexFile)) {
260	@file_put_contents($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>');
261	}
262
263	return true;
264	}
265	}
266