OptimizerCacheStructure.php — 10Web Booster – Website speed optimization, Cache & Page Speed optimizer trunk

tenweb-speed-optimizer / includes / OptimizerCacheStructure.php

tenweb-speed-optimizer / includes Last commit date

OptimizerCacheStructure.php

345 lines

1	<?php
2
3	namespace TenWebOptimizer;
4
5	use DOMDocument;
6
7	/**
8	* Class OptimizerCacheStructure
9	*/
10	class OptimizerCacheStructure
11	{
12	const TWO_CACHE_STRUCTURE_OPTION_PREFIX = 'two_cache_structure_';
13
14	const TWO_SOURCE_NAMES = [
15	'src',
16	'href',
17	'data-twodelayedjs',
18	'data-twodelayedcss'
19	];
20
21	/**
22	* @var OptimizerCacheStructure
23	*/
24	public static $instance;
25
26	/**
27	* @var array
28	*/
29	private $structure;
30
31	/**
32	* @var mixed
33	*/
34	private $pageUrlHash;
35
36	/**
37	* @var array
38	*/
39	private $tagsToReplace;
40
41	/**
42	* @var array
43	*/
44	private $tagsToAdd;
45
46	/**
47	* @var array
48	*/
49	private $webFontList;
50
51	/**
52	* @var bool
53	*/
54	private $isFromCache = false;
55
56	private $originalContent;
57
58	private $two_files_cache;
59
60	/**
61	* @var string
62	*/
63	private $cacheHeaderString = 'BYPASS';
64
65	/**
66	* @var object
67	*/
68	private $doc = null;
69
70	/**
71	* OptimizerCacheStructure constructor.
72	*/
73	private function __construct()
74	{
75	//todo check multisite support
76	libxml_use_internal_errors(true);
77	$this->doc = new DOMDocument();
78	$this->pageUrlHash = md5(sanitize_text_field($_SERVER['REQUEST_URI'])); // phpcs:ignore
79	$this->structure = get_option(
80	self::TWO_CACHE_STRUCTURE_OPTION_PREFIX . $this->pageUrlHash,
81	[
82	'tagsToReplace' => [],
83	'tagsToAdd' => [],
84	'webFontList' => [],
85	]
86	);
87
88	$this->tagsToReplace = !empty($this->structure['tagsToReplace']) ? $this->structure['tagsToReplace'] : [];
89	$this->tagsToAdd = !empty($this->structure['tagsToAdd']) ? $this->structure['tagsToAdd'] : [];
90	$this->webFontList = !empty($this->structure['webFontList']) ? $this->structure['webFontList'] : [];
91	global $TwoSettings;
92	$this->two_files_cache = $TwoSettings->get_settings('two_files_cache');
93	global $disableTwoCacheStructureCache;
94
95	if ($disableTwoCacheStructureCache === true) {
96	$this->disableCache();
97	}
98	}
99
100	/**
101	* Checks if there is cache structure data in cache
102	*
103	* @return bool
104	*/
105	public function check($content)
106	{
107	if ($this->getCacheStatus()) {
108	if (is_array($this->tagsToReplace) && is_array($this->tagsToAdd)) {
109	foreach ($this->tagsToReplace as $replace_tag) {
110	$replace = $replace_tag['replace'];
111
112	if (!empty($replace) && $replace != strip_tags($replace)) { // phpcs:ignore
113	if (false === strpos($content, $replace) \|\| !$this->getTagSource($replace)) {
114	return false;
115	}
116	}
117	}
118
119	foreach ($this->tagsToAdd as $add_tag) {
120	$replace = $add_tag['tag'];
121
122	if (!empty($replace) && $replace != strip_tags($replace)) { // phpcs:ignore
123	if (!$this->getTagSource($replace)) {
124	return false;
125	}
126	}
127	}
128	}
129
130	return !empty($this->tagsToReplace) && !empty($this->tagsToAdd);
131	}
132
133	return false;
134	}
135
136	/**
137	* Makes edits on main content data retrieved from cached
138	*
139	* @return mixed\|string\|string[]
140	*/
141	public function retrieve($content)
142	{
143	$this->originalContent = $content;
144
145	if ($this->check($content)) {
146	foreach ($this->tagsToReplace as $tagToReplace) {
147	if ($tagToReplace['search'] !== '') {
148	$pos = strpos($content, $tagToReplace['search']);
149
150	if ($pos !== false) {
151	$content = substr_replace($content, $tagToReplace['replace'], $pos, strlen($tagToReplace['search']));
152	}
153	}
154	}
155
156	foreach ($this->tagsToAdd as $tagToAdd) {
157	$content = OptimizerUtils::inject_in_html($content, $tagToAdd['tag'], $tagToAdd['where']);
158	}
159
160	$this->isFromCache = true;
161	$this->cacheHeaderString = 'HIT';
162
163	return $content;
164	}
165
166	return $this->originalContent;
167	}
168
169	/**
170	* Updates cache structure in DB
171	*
172	* @return bool
173	*/
174	public function set()
175	{
176	global $disableTwoCacheStructureCache;
177
178	if (!empty($this->structure['tagsToAdd']) && !empty($this->structure['tagsToReplace']) && $this->getCacheStatus() && $disableTwoCacheStructureCache !== true) {
179	$this->cacheHeaderString = 'MISS';
180	$request_uri = isset($_SERVER['REQUEST_URI']) ? sanitize_text_field($_SERVER['REQUEST_URI']) : '';
181	$timestamp_size = mb_strlen(gmdate('Y-m-d_H:i:s') . ' ' . $request_uri, '8bit');
182	$structure_size = mb_strlen(serialize((array) $this->structure), '8bit'); // phpcs:ignore
183	$total_size = (int) $timestamp_size + (int) $structure_size;
184
185	if (get_option(self::TWO_CACHE_STRUCTURE_OPTION_PREFIX . 'size')) {
186	$total_size = $total_size + (int) get_option(self::TWO_CACHE_STRUCTURE_OPTION_PREFIX . 'size');
187	}
188	update_option(self::TWO_CACHE_STRUCTURE_OPTION_PREFIX . 'size', $total_size, 'no');
189	update_option(self::TWO_CACHE_STRUCTURE_OPTION_PREFIX . 'TIMESTAMP_' . $this->pageUrlHash, gmdate('Y-m-d_H:i:s') . ' ' . $request_uri, 'no'); // phpcs:ignore
190
191	return update_option(self::TWO_CACHE_STRUCTURE_OPTION_PREFIX . $this->pageUrlHash, $this->structure, 'no');
192	}
193
194	return false;
195	}
196
197	/**
198	* init Singleton
199	*
200	* @return OptimizerCacheStructure
201	*/
202	public static function init()
203	{
204	if (self::$instance === null) {
205	self::$instance = new self();
206	}
207
208	return self::$instance;
209	}
210
211	/**
212	* Whether the content data was populated from cache
213	*
214	* @return bool
215	*/
216	public function isFromCache()
217	{
218	if ($this->getCacheStatus()) {
219	return $this->isFromCache;
220	}
221
222	return false;
223	}
224
225	/**
226	* Returns webFontList
227	*
228	* @return array\|mixed
229	*/
230	public function getWebFontList()
231	{
232	return $this->webFontList;
233	}
234
235	/**
236	* Adds array of tags that are needed to replace
237	*/
238	public function addToTagsToReplace($search, $replace)
239	{
240	$this->structure['tagsToReplace'][] = [
241	'search' => $search,
242	'replace' => $replace
243	];
244	}
245
246	/**
247	* Adds array of what tags and where
248	*/
249	public function addToTagsToAdd($tag, $where)
250	{
251	$this->structure['tagsToAdd'][] = [
252	'tag' => $tag,
253	'where' => $where
254	];
255	}
256
257	/**
258	* Adds font list array to cache structure
259	*/
260	public function addToWebFontList($fonts)
261	{
262	$this->structure['webFontList'] = $fonts;
263	}
264
265	/**
266	* Returns Cache Status
267	*
268	* @return bool
269	*/
270	public function getCacheStatus()
271	{
272	return $this->two_files_cache === 'on';
273	}
274
275	/**
276	* Returns Cache Status
277	*/
278	public function disableCache()
279	{
280	$this->two_files_cache = '';
281	}
282
283	/**
284	* FLushes cache structure in DB
285	*/
286	public static function flushAllCache()
287	{
288	global $wpdb;
289	$wpdb->query("DELETE FROM $wpdb->options WHERE option_name LIKE '" . self::TWO_CACHE_STRUCTURE_OPTION_PREFIX . "%'"); // phpcs:ignore
290	}
291
292	public function addCacheHeaders()
293	{
294	header('X-TWO-Cache: ' . $this->cacheHeaderString);
295	}
296
297	/**
298	* Sets cache status
299	*
300	* @param string $status
301	*/
302	public function setCacheHeaderString($status)
303	{
304	$this->cacheHeaderString = $status;
305	}
306
307	/**
308	* Check cache file
309	*
310	* @param string $data
311	*
312	* @return bool
313	*/
314	private function getTagSource($data)
315	{
316	$this->doc->loadHTML($data);
317	$libxml_errors = libxml_get_errors();
318
319	if (empty($libxml_errors)) {
320	$tags = $this->doc->getElementsByTagName('*');
321
322	foreach (self::TWO_SOURCE_NAMES as $name) {
323	foreach ($tags as $tag) {
324	$source = $tag->getAttribute($name);
325
326	if (!empty($source)) {
327	$url_data = wp_parse_url($source);
328
329	if (isset($_SERVER['HTTP_HOST']) && isset($url_data['host']) && $_SERVER['HTTP_HOST'] == $url_data['host']) {
330	$file_path = WP_ROOT_DIR . $url_data['path'];
331
332	if (!file_exists($file_path)) {
333	return false;
334	}
335	}
336	}
337	}
338	}
339	}
340	libxml_clear_errors();
341
342	return true;
343	}
344	}
345