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<?php |
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|
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function bwp_pass_cookie_requirement() { |
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$berqconfigs = berqConfigs::getInstance(); |
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$configs = $berqconfigs->get_configs(); |
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$default = ['berqwpnocache', 'wp-postpass', 'comment_author', 'woocommerce_cart_hash', 'edd_items_in_cart']; |
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$excluded_cookies = array_merge($configs['exclude_cookies'], $default); |
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|
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if (!empty($excluded_cookies)) { |
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foreach ($excluded_cookies as $cookie_id) { |
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|
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// Skip if empty |
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if (empty($cookie_id)) { |
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continue; |
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} |
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|
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foreach ($_COOKIE as $key => $value) { |
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if (strpos($key, $cookie_id) === 0) { |
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return false; |
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} |
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} |
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} |
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} |
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|
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return true; |
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} |
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|
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function bwp_request_is_https() { |
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if (!empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off') { |
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return true; |
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} |
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|
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// Reverse proxy / load balancer terminating TLS upstream |
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if (!empty($_SERVER['HTTP_X_FORWARDED_PROTO'])) { |
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// may be a comma-separated chain: "https,http" — first hop is the client |
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$proto = strtolower(trim(explode(',', $_SERVER['HTTP_X_FORWARDED_PROTO'])[0])); |
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if ($proto === 'https') { |
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return true; |
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} |
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} |
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|
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if (!empty($_SERVER['HTTP_X_FORWARDED_SSL']) && strtolower($_SERVER['HTTP_X_FORWARDED_SSL']) === 'on') { |
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return true; |
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} |
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|
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if (!empty($_SERVER['HTTP_FRONT_END_HTTPS']) && strtolower($_SERVER['HTTP_FRONT_END_HTTPS']) === 'on') { |
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return true; |
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} |
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|
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if (!empty($_SERVER['SERVER_PORT']) && (int) $_SERVER['SERVER_PORT'] === 443) { |
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return true; |
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} |
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|
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return false; |
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} |
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|
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function bwp_get_request_url() { |
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|
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$scheme = 'http://'; |
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|
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if (bwp_request_is_https()) { |
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$scheme = 'https://'; |
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} elseif (function_exists('wp_parse_url') && function_exists('get_option')) { |
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$scheme = (wp_parse_url(get_option('home'), PHP_URL_SCHEME) === 'https') ? 'https://' : 'http://'; |
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} |
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|
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$host = isset($_SERVER['HTTP_HOST']) ? strip_tags(stripslashes($_SERVER['HTTP_HOST'])) : 'localhost'; |
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$uri = isset($_SERVER['REQUEST_URI']) ? strip_tags(stripslashes($_SERVER['REQUEST_URI'])) : '/'; |
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$url = $scheme . $host . $uri; |
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return strtolower($url); |
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} |
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|
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// function bwp_build_cache_path($url) { |
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// $parts = parse_url($url); |
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|
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// $host = $parts['host'] ?? ''; |
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// $path = $parts['path'] ?? '/'; |
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|
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// // normalize |
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// $path = '/' . ltrim($path, '/'); |
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// $path = rtrim($path, '/'); |
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|
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// if ($path === '') { |
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// $path = '/'; |
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// } |
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|
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// // sanitize |
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// $host = preg_replace('#[^a-zA-Z0-9\.\-]#', '', $host); |
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// $path = preg_replace('#[^a-zA-Z0-9/_-]#', '', $path); |
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|
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// return $host . $path; |
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// } |
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|
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function bwp_build_cache_path($url) { |
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$parts = parse_url($url); |
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$host = $parts['host'] ?? ''; |
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$path = $parts['path'] ?? '/'; |
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$query = $parts['query'] ?? ''; |
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|
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// normalize path |
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$path = '/' . ltrim($path, '/'); |
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$path = rtrim($path, '/'); |
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if ($path === '') { |
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$path = '/'; |
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} |
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|
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// sanitize host |
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$host = preg_replace('#[^a-zA-Z0-9\.\-]#', '', $host); |
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|
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// Normalize percent-encoded chars to raw UTF-8, then strip only chars that |
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// are unsafe on filesystems (null bytes, path traversal sequences). |
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$path = urldecode($path); |
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$path = str_replace("\0", '', $path); |
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$path = preg_replace('#\.\.+#', '', $path); |
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$path = preg_replace('#[<>:"\\\\|?*]#', '', $path); |
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|
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if ($query === '') { |
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return $path === '/' ? $host : $host . $path; |
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} |
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|
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// normalize query param order so ?b=2&a=1 and ?a=1&b=2 hit the same cache |
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parse_str($query, $params); |
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ksort($params); |
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$normalized_query = http_build_query($params); |
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|
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// hash it — query strings can contain anything and be very long |
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$query_hash = substr(md5($normalized_query), 0, 12); |
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|
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return $host . $path . '/q-' . $query_hash; |
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} |
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|
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function bwp_serve_advanced_cache($serve_from = 'plugin') { |
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|
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if (php_sapi_name() === 'cli' || (defined('WP_CLI') && WP_CLI)) { |
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return; |
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} |
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|
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if (isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] === 'GET' && !bwp_is_user_logged_in() && !bwp_is_ajax() && !berqDetectCrawler::is_crawler() && bwp_pass_cookie_requirement()) { |
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|
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$berqconfigs = berqConfigs::getInstance(); |
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$configs = $berqconfigs->get_configs(); |
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$url = bwp_get_request_url(); |
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$url = @dropin_remove_ignore_params($url); |
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$cache_key = md5($url); |
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$cache_directory = WP_CONTENT_DIR . '/cache/berqwp/html/'; |
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if (defined('MULTISITE') && MULTISITE) { |
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$blog_id = berqConfigs::detect_blog_id_from_request(); |
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$cache_directory .= 'site-' . $blog_id . '/'; |
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} |
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$cache_file = $cache_directory . $cache_key . '.html'; |
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$cache_file_gz = $cache_directory . $cache_key . '.gz'; |
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$cache_file_gz = $cache_directory . bwp_build_cache_path($url) . '/index.html.gz'; |
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$cache_file = $cache_file_gz; |
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$cache_max_life = file_exists($cache_file) ? @filemtime($cache_file) + $configs['cache_lifespan'] : null; |
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// $compression_enabled = $configs['page_compression'] === true; |
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$compression_enabled = true; |
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$accept_encoding = $_SERVER['HTTP_ACCEPT_ENCODING'] ?? ''; |
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$supports_gzip = strpos($accept_encoding, 'gzip') !== false; |
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$domain = isset($_SERVER['HTTP_HOST']) ? strip_tags(stripslashes($_SERVER['HTTP_HOST'])) : ''; |
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|
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if (berqwp_dropin_is_page_url_excluded($url)) { |
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return; |
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} |
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|
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|
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if (file_exists($cache_file) && $cache_max_life > time()) { |
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$file_content = @file_get_contents($cache_file); |
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|
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if (!isset($_GET['creating_cache']) && file_exists($cache_file)) { |
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|
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if (strpos($file_content, "Optimized with BerqWP's instant cache") !== false && (filemtime($cache_file) + DAY_IN_SECONDS) < time()) { |
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return; |
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} |
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|
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// Prepare gzip cache file |
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if ($compression_enabled && file_exists($cache_file_gz)) { |
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$cache_file = $cache_file_gz; |
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// header('Content-Encoding: gzip'); |
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header_remove('Content-Encoding'); |
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} |
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|
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$lastModified = filemtime($cache_file); |
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$etag = md5_file($cache_file); |
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header('ETag: ' . $etag); |
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header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $lastModified) . ' GMT'); |
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header('X-File-Size: ' . filesize($cache_file), true); |
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header('Content-Type: text/html; charset=utf-8'); |
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header("X-served: $serve_from"); |
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header("X-BerqWP-Cache: HIT"); |
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// header('Vary: Cookie'); |
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|
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// Check if the client has a cached copy and if it's still valid using Last-Modified |
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if ((isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $lastModified) || (isset($_SERVER['HTTP_IF_NONE_MATCH']) && $_SERVER['HTTP_IF_NONE_MATCH'] === $etag)) { |
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// The client's cache is still valid based on Last-Modified, respond with a 304 Not Modified |
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header('HTTP/1.1 304 Not Modified'); |
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// header('Expires: ' . gmdate('D, d M Y H:i:s') . ' GMT'); |
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// header("Expires: 0"); |
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// header('Cache-Control: no-cache, must-revalidate'); |
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header('Cache-Control: public, max-age=600, s-maxage=2592000, stale-while-revalidate=86400', true); |
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header('cdn-cache-control: max-age=2592000'); |
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header("Cache-Tag: $domain"); |
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exit(); |
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|
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} |
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|
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// Prevent PHP/Apache from re-compressing the already-gzipped cache file |
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if (ini_get('zlib.output_compression')) { |
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ini_set('zlib.output_compression', 'Off'); |
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} |
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|
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while (ob_get_level()) { |
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ob_end_clean(); |
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} |
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|
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// header('Cache-Control: public, max-age=0, s-maxage=3600, must-revalidate', true); |
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// header('Cache-Control: public, max-age=60, s-maxage=3600, stale-while-revalidate=60, must-revalidate', true); |
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header('Cache-Control: public, max-age=600, s-maxage=2592000, stale-while-revalidate=86400', true); |
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header('cdn-cache-control: max-age=2592000'); |
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header("Cache-Tag: $domain"); |
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// header("Content-Security-Policy: script-src 'self' blob: 'unsafe-inline'"); |
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header('Vary: Accept-Encoding, Cookie'); |
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header('Content-Encoding: gzip', true); |
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header('Content-Length: ' . filesize($cache_file), true); |
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readfile($cache_file); |
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exit(); |
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} |
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|
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} |
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|
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} |
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} |
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|
