autoptimize / classes / autoptimizeCache.php

autoptimizeCache.php in Autoptimize 1.8.1, at classes/autoptimizeCache.php

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