searchpro / inc / common-functions.php

common-functions.php in BerqWP – All-In-One Optimization for Core Web Vitals, Cache, CDN, Images, CSS & JavaScript 4.0.17, at inc/common-functions.php

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1	<?php
2
3	function bwp_pass_cookie_requirement() {
4	$berqconfigs = berqConfigs::getInstance();
5	$configs = $berqconfigs->get_configs();
6	$default = ['berqwpnocache', 'wp-postpass', 'comment_author', 'woocommerce_cart_hash', 'edd_items_in_cart'];
7	$excluded_cookies = array_merge($configs['exclude_cookies'], $default);
8
9	if (!empty($excluded_cookies)) {
10	foreach ($excluded_cookies as $cookie_id) {
11
12	// Skip if empty
13	if (empty($cookie_id)) {
14	continue;
15	}
16
17	foreach ($_COOKIE as $key => $value) {
18	if (strpos($key, $cookie_id) === 0) {
19	return false;
20	}
21	}
22	}
23	}
24
25	return true;
26	}
27
28	function bwp_get_request_url() {
29	$scheme = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https://' : 'http://';
30	$host = $_SERVER['HTTP_HOST'] ?? 'localhost'; // Fallback to 'localhost' if unavailable
31	$uri = $_SERVER['REQUEST_URI'] ?? '/';
32	$url = $scheme . $host . $uri;
33	return strtolower($url);
34	}
35
36	// function bwp_build_cache_path($url) {
37	// $parts = parse_url($url);
38
39	// $host = $parts['host'] ?? '';
40	// $path = $parts['path'] ?? '/';
41
42	// // normalize
43	// $path = '/' . ltrim($path, '/');
44	// $path = rtrim($path, '/');
45
46	// if ($path === '') {
47	// $path = '/';
48	// }
49
50	// // sanitize
51	// $host = preg_replace('#[^a-zA-Z0-9\.\-]#', '', $host);
52	// $path = preg_replace('#[^a-zA-Z0-9/_-]#', '', $path);
53
54	// return $host . $path;
55	// }
56
57	function bwp_build_cache_path($url) {
58	$parts = parse_url($url);
59	$host = $parts['host'] ?? '';
60	$path = $parts['path'] ?? '/';
61	$query = $parts['query'] ?? '';
62
63	// normalize path
64	$path = '/' . ltrim($path, '/');
65	$path = rtrim($path, '/');
66	if ($path === '') {
67	$path = '/';
68	}
69
70	// sanitize host
71	$host = preg_replace('#[^a-zA-Z0-9\.\-]#', '', $host);
72
73	// Normalize percent-encoded chars to raw UTF-8, then strip only chars that
74	// are unsafe on filesystems (null bytes, path traversal sequences).
75	$path = urldecode($path);
76	$path = str_replace("\0", '', $path);
77	$path = preg_replace('#\.\.+#', '', $path);
78	$path = preg_replace('#[<>:"\\\\\|?*]#', '', $path);
79
80	if ($query === '') {
81	return $path === '/' ? $host : $host . $path;
82	}
83
84	// normalize query param order so ?b=2&a=1 and ?a=1&b=2 hit the same cache
85	parse_str($query, $params);
86	ksort($params);
87	$normalized_query = http_build_query($params);
88
89	// hash it — query strings can contain anything and be very long
90	$query_hash = substr(md5($normalized_query), 0, 12);
91
92	return $host . $path . '/q-' . $query_hash;
93	}
94
95	function bwp_serve_advanced_cache($serve_from = 'plugin') {
96	if (isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] === 'GET' && !bwp_is_user_logged_in() && !bwp_is_ajax() && !berqDetectCrawler::is_crawler() && bwp_pass_cookie_requirement()) {
97	$berqconfigs = berqConfigs::getInstance();
98	$configs = $berqconfigs->get_configs();
99	$url = bwp_get_request_url();
100	$url = @dropin_remove_ignore_params($url);
101	$cache_key = md5($url);
102	$cache_directory = WP_CONTENT_DIR . '/cache/berqwp/html/';
103	if (defined('MULTISITE') && MULTISITE) {
104	$blog_id = berqConfigs::detect_blog_id_from_request();
105	$cache_directory .= 'site-' . $blog_id . '/';
106	}
107	$cache_file = $cache_directory . $cache_key . '.html';
108	$cache_file_gz = $cache_directory . $cache_key . '.gz';
109	$cache_file_gz = $cache_directory . bwp_build_cache_path($url) . '/index.html.gz';
110	$cache_file = $cache_file_gz;
111	$cache_max_life = file_exists($cache_file) ? @filemtime($cache_file) + $configs['cache_lifespan'] : null;
112	// $compression_enabled = $configs['page_compression'] === true;
113	$compression_enabled = true;
114	$accept_encoding = $_SERVER['HTTP_ACCEPT_ENCODING'] ?? '';
115	$supports_gzip = strpos($accept_encoding, 'gzip') !== false;
116
117	if (berqwp_dropin_is_page_url_excluded($url)) {
118	return;
119	}
120
121	if (file_exists($cache_file) && $cache_max_life > time()) {
122	$file_content = @file_get_contents($cache_file);
123
124	if (!isset($_GET['creating_cache']) && file_exists($cache_file)) {
125
126	if (strpos($file_content, "Optimized with BerqWP's instant cache") !== false && (filemtime($cache_file) + DAY_IN_SECONDS) < time()) {
127	return;
128	}
129
130	// Prepare gzip cache file
131	if ($compression_enabled && file_exists($cache_file_gz)) {
132	$cache_file = $cache_file_gz;
133	// header('Content-Encoding: gzip');
134	header_remove('Content-Encoding');
135	}
136
137	$lastModified = filemtime($cache_file);
138	$etag = md5_file($cache_file);
139	header('ETag: ' . $etag);
140	header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $lastModified) . ' GMT');
141	header('X-File-Size: ' . filesize($cache_file), true);
142	header('Content-Type: text/html; charset=utf-8');
143	header("X-served: $serve_from");
144	header('Vary: Cookie');
145
146	// Check if the client has a cached copy and if it's still valid using Last-Modified
147	if ((isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $lastModified) \|\| (isset($_SERVER['HTTP_IF_NONE_MATCH']) && $_SERVER['HTTP_IF_NONE_MATCH'] === $etag)) {
148	// The client's cache is still valid based on Last-Modified, respond with a 304 Not Modified
149	header('HTTP/1.1 304 Not Modified');
150	// header('Expires: ' . gmdate('D, d M Y H:i:s') . ' GMT');
151	header("Expires: 0");
152	header('Cache-Control: no-cache, must-revalidate');
153	exit();
154
155	}
156
157	// header('Cache-Control: public, max-age=0, s-maxage=3600, must-revalidate', true);
158	header('Cache-Control: public, max-age=60, s-maxage=3600, stale-while-revalidate=60, must-revalidate', true);
159	header('Vary: Accept-Encoding, Cookie');
160	header('Content-Encoding: gzip', true);
161	header('Content-Length: ' . filesize($cache_file), true);
162	readfile($cache_file);
163	exit();
164	}
165
166	}
167
168	}
169	}
170