LiteSpeed.php
159 lines
| 1 | <?php |
| 2 | |
| 3 | namespace NitroPack\Integration\Server; |
| 4 | use NitroPack\WordPress\NitroPack; |
| 5 | use NitroPack\Url; |
| 6 | use NitroPack\SDK\Device; |
| 7 | use NitroPack\Integration\Hosting\WPX; |
| 8 | |
| 9 | class LiteSpeed { |
| 10 | const STAGE = "very_early"; |
| 11 | |
| 12 | public static function detect() { |
| 13 | return !empty($_SERVER["X-LSCACHE"]) || ( !empty($_SERVER["SERVER_SOFTWARE"]) && strtolower($_SERVER["SERVER_SOFTWARE"]) == "litespeed" ); |
| 14 | } |
| 15 | |
| 16 | public static function isCacheEnabled() { |
| 17 | return |
| 18 | !empty($_SERVER["X-LSCACHE"]) && |
| 19 | in_array("on", array_map("trim", explode(",", $_SERVER["X-LSCACHE"]))) && |
| 20 | !empty($_SERVER['LSCACHE_VARY_VALUE']) && |
| 21 | in_array($_SERVER['LSCACHE_VARY_VALUE'], array("nitrodesktop", "nitrotablet", "nitromobile")); |
| 22 | } |
| 23 | |
| 24 | public static function sendCacheHeader($maxAge = NULL) { |
| 25 | if (!$maxAge) { |
| 26 | nitropack_header("X-LiteSpeed-Cache-Control: public"); |
| 27 | } else if (is_numeric($maxAge)) { |
| 28 | nitropack_header("X-LiteSpeed-Cache-Control: public,max-age=" . (int)$maxAge); |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | public static function purge($url = NULL, $tag = NULL) { |
| 33 | if ($url || $tag) { |
| 34 | $headerValues = []; |
| 35 | |
| 36 | if ($url) { |
| 37 | $urlObj = new Url((new Url($url))->getNormalized()); |
| 38 | if (!$urlObj->getQuery()) { |
| 39 | $headerValues[] = "uri=" . md5($urlObj->getPath()); |
| 40 | } else { |
| 41 | $headerValues[] = "uri=" . md5($urlObj->getPath() . "?" . $urlObj->getQuery()); |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | if ($tag) { |
| 46 | $headerValues[] = $tag; |
| 47 | } |
| 48 | |
| 49 | nitropack_header("X-LiteSpeed-Purge: " . implode(", ", $headerValues), false); |
| 50 | } else { |
| 51 | nitropack_header("X-LiteSpeed-Purge: *", false); |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | public function init($stage) { |
| 56 | if (self::detect()) { |
| 57 | add_filter('nitropack_should_modify_htaccess', function() { return true; }); |
| 58 | add_filter('nitropack_htaccess_rules', [$this, 'getHtaccessRules'], 10); |
| 59 | |
| 60 | if (self::isCacheEnabled()) { |
| 61 | add_action('nitropack_integration_purge_url', [$this, 'purgeUrl']); |
| 62 | add_action('nitropack_integration_purge_all', [$this, 'purgeAll']); |
| 63 | add_action('nitropack_early_cache_headers', [$this, 'setupVary']); |
| 64 | add_action('nitropack_early_cache_headers', [$this, 'preventProxyCache']); |
| 65 | add_action('nitropack_cacheable_cache_headers', [$this, 'allowProxyCache']); |
| 66 | add_filter('nocache_headers', function($headers) { |
| 67 | $headers["X-LiteSpeed-Cache-Control"] = "no-cache"; |
| 68 | return $headers; |
| 69 | }); |
| 70 | } else { |
| 71 | add_filter('nitropack_needs_htaccess_changes', function() { return true; }); |
| 72 | } |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | public function purgeUrl($url) { |
| 77 | self::purge($url); |
| 78 | } |
| 79 | |
| 80 | public function purgeAll() { |
| 81 | self::purge(); |
| 82 | } |
| 83 | |
| 84 | public function setupVary() { |
| 85 | $cookies = []; // Configure vary based on NitroPack's variation cookies. |
| 86 | |
| 87 | $nitro = get_nitropack()->getSdk(); |
| 88 | if ($nitro && !empty($nitro->getConfig()->PageCache->SupportedCookies)) { |
| 89 | $cookies = $nitro->getConfig()->PageCache->SupportedCookies; |
| 90 | } |
| 91 | |
| 92 | $device = new Device($_SERVER["HTTP_USER_AGENT"]); |
| 93 | $deviceStr = "nitrodesktop"; |
| 94 | |
| 95 | if ($device->isMobile()) { |
| 96 | $deviceStr = "nitromobile"; |
| 97 | } else if ($device->isTablet()) { |
| 98 | $deviceStr = "nitrotablet"; |
| 99 | } |
| 100 | |
| 101 | $varyStr = ""; |
| 102 | |
| 103 | if ($cookies) { |
| 104 | $varyStr = implode(",", array_map(function($name) { return "cookie=$name"; }, $cookies)); // Vary on multiple cookies should look like this: cookie=name1,cookie=name2 |
| 105 | } |
| 106 | |
| 107 | $varyStr .= ($varyStr ? ", " : "") . "value=$deviceStr"; |
| 108 | |
| 109 | nitropack_header("X-LiteSpeed-Vary: $varyStr"); |
| 110 | } |
| 111 | |
| 112 | public function preventProxyCache() { |
| 113 | nitropack_header("X-LiteSpeed-Cache-Control: no-cache"); |
| 114 | } |
| 115 | |
| 116 | public function allowProxyCache() { |
| 117 | self::sendCacheHeader(3600); |
| 118 | $urlObj = new Url(NitroPack::getInstance()->getSdk()->getUrl()); |
| 119 | if (!$urlObj->getQuery()) { |
| 120 | $uri = md5($urlObj->getPath()); |
| 121 | } else { |
| 122 | $uri = md5($urlObj->getPath() . "?" . $urlObj->getQuery()); |
| 123 | } |
| 124 | |
| 125 | nitropack_header("X-LiteSpeed-Tag: uri=$uri"); |
| 126 | |
| 127 | // TODO: Add LSC-Cookie headers for variation cookies - https://docs.litespeedtech.com/lscache/devguide/controls/#lsc-cookie |
| 128 | } |
| 129 | |
| 130 | public function getHtaccessRules($ruleLines) { |
| 131 | $rules = " |
| 132 | <IfModule LiteSpeed> |
| 133 | RewriteEngine on |
| 134 | CacheLookup on |
| 135 | |
| 136 | RewriteRule .* - [E=Cache-Control:vary=nitrodesktop] |
| 137 | |
| 138 | RewriteCond %{HTTP_USER_AGENT} Android|iPad|RIM\ Tablet|hp-tablet|Kindle\ Fire [NC] |
| 139 | RewriteRule .* - [E=Cache-Control:vary=nitrotablet] |
| 140 | |
| 141 | RewriteCond %{HTTP_USER_AGENT} iPod|iPhone|MobileSafari|webOS|BlackBerry|windows\ phone|symbian|vodafone|opera\ mini|windows\ ce|smartphone|palm|midp [NC,OR] |
| 142 | RewriteCond %{HTTP_USER_AGENT} Android.*Mobile [NC,OR] |
| 143 | RewriteCond %{HTTP_USER_AGENT} Mobile.*Android [NC] |
| 144 | RewriteRule .* - [E=Cache-Control:vary=nitromobile] |
| 145 | |
| 146 | # QSDROP |
| 147 | |
| 148 | </IfModule> |
| 149 | "; |
| 150 | |
| 151 | $nitro = get_nitropack()->getSdk(); |
| 152 | if ($nitro && !empty($nitro->getConfig()->IgnoredParams)) { |
| 153 | $rules = str_replace("# QSDROP", implode("\n", array_map(function($param) { return "CacheKeyModify -qs:$param"; }, array_filter($nitro->getConfig()->IgnoredParams, function($param) { return $param != "ignorenitro"; }))), $rules); |
| 154 | } |
| 155 | |
| 156 | return array_merge($ruleLines, explode("\n", $rules)); |
| 157 | } |
| 158 | } |
| 159 |