'3g2', 'video/3gp' => '3gp', 'video/3gpp' => '3gp', 'application/x-compressed' => '7zip', 'audio/x-acc' => 'aac', 'audio/ac3' => 'ac3', 'application/postscript' => 'ai', 'audio/x-aiff' => 'aif', 'audio/aiff' => 'aif', 'audio/x-au' => 'au', 'video/x-msvideo' => 'avi', 'video/msvideo' => 'avi', 'video/avi' => 'avi', 'application/x-troff-msvideo' => 'avi', 'application/macbinary' => 'bin', 'application/mac-binary' => 'bin', 'application/x-binary' => 'bin', 'application/x-macbinary' => 'bin', 'image/bmp' => 'bmp', 'image/x-bmp' => 'bmp', 'image/x-bitmap' => 'bmp', 'image/x-xbitmap' => 'bmp', 'image/x-win-bitmap' => 'bmp', 'image/x-windows-bmp' => 'bmp', 'image/ms-bmp' => 'bmp', 'image/x-ms-bmp' => 'bmp', 'application/bmp' => 'bmp', 'application/x-bmp' => 'bmp', 'application/x-win-bitmap' => 'bmp', 'application/cdr' => 'cdr', 'application/coreldraw' => 'cdr', 'application/x-cdr' => 'cdr', 'application/x-coreldraw' => 'cdr', 'image/cdr' => 'cdr', 'image/x-cdr' => 'cdr', 'zz-application/zz-winassoc-cdr' => 'cdr', 'application/mac-compactpro' => 'cpt', 'application/pkix-crl' => 'crl', 'application/pkcs-crl' => 'crl', 'application/x-x509-ca-cert' => 'crt', 'application/pkix-cert' => 'crt', 'text/css' => 'css', 'text/x-comma-separated-values' => 'csv', 'text/comma-separated-values' => 'csv', 'application/vnd.msexcel' => 'csv', 'application/x-director' => 'dcr', 'application/vnd.openxmlformats-officedocument.wordprocessingml.document' => 'docx', 'application/x-dvi' => 'dvi', 'message/rfc822' => 'eml', 'application/x-msdownload' => 'exe', 'video/x-f4v' => 'f4v', 'audio/x-flac' => 'flac', 'video/x-flv' => 'flv', 'image/gif' => 'gif', 'application/gpg-keys' => 'gpg', 'application/x-gtar' => 'gtar', 'application/x-gzip' => 'gzip', 'application/mac-binhex40' => 'hqx', 'application/mac-binhex' => 'hqx', 'application/x-binhex40' => 'hqx', 'application/x-mac-binhex40' => 'hqx', 'text/html' => 'html', 'image/x-icon' => 'ico', 'image/x-ico' => 'ico', 'image/vnd.microsoft.icon' => 'ico', 'text/calendar' => 'ics', 'application/java-archive' => 'jar', 'application/x-java-application' => 'jar', 'application/x-jar' => 'jar', 'image/jp2' => 'jp2', 'video/mj2' => 'jp2', 'image/jpx' => 'jp2', 'image/jpm' => 'jp2', 'image/jpeg' => 'jpg', 'image/pjpeg' => 'jpg', 'application/x-javascript' => 'js', 'application/json' => 'json', 'text/json' => 'json', 'application/vnd.google-earth.kml+xml' => 'kml', 'application/vnd.google-earth.kmz' => 'kmz', 'text/x-log' => 'log', 'audio/x-m4a' => 'm4a', 'audio/mp4' => 'm4a', 'application/vnd.mpegurl' => 'm4u', 'audio/midi' => 'mid', 'application/vnd.mif' => 'mif', 'video/quicktime' => 'mov', 'video/x-sgi-movie' => 'movie', 'audio/mpeg' => 'mp3', 'audio/mpg' => 'mp3', 'audio/mpeg3' => 'mp3', 'audio/mp3' => 'mp3', 'video/mp4' => 'mp4', 'video/mpeg' => 'mpeg', 'application/oda' => 'oda', 'audio/ogg' => 'ogg', 'video/ogg' => 'ogg', 'application/ogg' => 'ogg', 'font/otf' => 'otf', 'application/x-pkcs10' => 'p10', 'application/pkcs10' => 'p10', 'application/x-pkcs12' => 'p12', 'application/x-pkcs7-signature' => 'p7a', 'application/pkcs7-mime' => 'p7c', 'application/x-pkcs7-mime' => 'p7c', 'application/x-pkcs7-certreqresp' => 'p7r', 'application/pkcs7-signature' => 'p7s', 'application/pdf' => 'pdf', 'application/octet-stream' => 'pdf', 'application/x-x509-user-cert' => 'pem', 'application/x-pem-file' => 'pem', 'application/pgp' => 'pgp', 'application/x-httpd-php' => 'php', 'application/php' => 'php', 'application/x-php' => 'php', 'text/php' => 'php', 'text/x-php' => 'php', 'application/x-httpd-php-source' => 'php', 'image/png' => 'png', 'image/x-png' => 'png', 'application/powerpoint' => 'ppt', 'application/vnd.ms-powerpoint' => 'ppt', 'application/vnd.ms-office' => 'ppt', 'application/msword' => 'ppt', 'application/vnd.openxmlformats-officedocument.presentationml.presentation' => 'pptx', 'application/x-photoshop' => 'psd', 'image/vnd.adobe.photoshop' => 'psd', 'audio/x-realaudio' => 'ra', 'audio/x-pn-realaudio' => 'ram', 'application/x-rar' => 'rar', 'application/rar' => 'rar', 'application/x-rar-compressed' => 'rar', 'audio/x-pn-realaudio-plugin' => 'rpm', 'application/x-pkcs7' => 'rsa', 'text/rtf' => 'rtf', 'text/richtext' => 'rtx', 'video/vnd.rn-realvideo' => 'rv', 'application/x-stuffit' => 'sit', 'application/smil' => 'smil', 'text/srt' => 'srt', 'image/svg+xml' => 'svg', 'application/x-shockwave-flash' => 'swf', 'application/x-tar' => 'tar', 'application/x-gzip-compressed' => 'tgz', 'image/tiff' => 'tiff', 'font/ttf' => 'ttf', 'text/plain' => 'txt', 'text/x-vcard' => 'vcf', 'application/videolan' => 'vlc', 'text/vtt' => 'vtt', 'audio/x-wav' => 'wav', 'audio/wave' => 'wav', 'audio/wav' => 'wav', 'application/wbxml' => 'wbxml', 'video/webm' => 'webm', 'image/webp' => 'webp', 'audio/x-ms-wma' => 'wma', 'application/wmlc' => 'wmlc', 'video/x-ms-wmv' => 'wmv', 'video/x-ms-asf' => 'wmv', 'font/woff' => 'woff', 'font/woff2' => 'woff2', 'application/xhtml+xml' => 'xhtml', 'application/excel' => 'xl', 'application/msexcel' => 'xls', 'application/x-msexcel' => 'xls', 'application/x-ms-excel' => 'xls', 'application/x-excel' => 'xls', 'application/x-dos_ms_excel' => 'xls', 'application/xls' => 'xls', 'application/x-xls' => 'xls', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' => 'xlsx', 'application/vnd.ms-excel' => 'xlsx', 'application/xml' => 'xml', 'text/xml' => 'xml', 'text/xsl' => 'xsl', 'application/xspf+xml' => 'xspf', 'application/x-compress' => 'z', 'application/x-zip' => 'zip', 'application/zip' => 'zip', 'application/x-zip-compressed' => 'zip', 'application/s-compressed' => 'zip', 'multipart/x-zip' => 'zip', 'text/x-scriptzsh' => 'zsh' ]; public function __construct($dir) { $this->dir = CACHE_DIR . "/" . clean_filename($dir); } public function getDir() { return $this->dir; } public function makeDir() { if (!is_dir($this->dir)) { return mkdir($this->dir); } } public function isWritable($filename = "") { if ($filename) { if (file_exists($this->getFullPath($filename))) return is_writable($this->getFullPath($filename)); else return is_writable($this->dir); } else { return is_writable($this->dir); } } public function exists($filename) { return file_exists($this->getFullPath($filename)); } public function getSize($filename) { if ($this->exists($filename)) return filesize($this->getFullPath($filename)); else return -1; } public function getFullPath($filename) { $filename = clean_filename($filename); return $this->dir . "/" . $filename; } public function put($filename, $data) { return file_put_contents($this->getFullPath($filename), $data); } public function touch($filename) { return touch($this->getFullPath($filename)); } public function get($filename) { if ($this->exists($filename)) return file_get_contents($this->getFullPath($filename)); else return null; } public function getMimeType($filename) { if ($this->exists($filename)) return mime_content_type($this->getFullPath($filename)); else return null; } public function getFakeExtension($filename) { $mimetype = $this->getMimeType($filename); if ($mimetype) return isset($this->mimeMap[$mimetype]) ? $this->mimeMap[$mimetype] : ""; else return ""; } public function send($filename) { $fake_extension = $this->getFakeExtension($filename); if ($fake_extension) $fake_extension = ".$fake_extension"; header("Content-Disposition: inline; filename=\"${filename}${fake_extension}\""); return send_local_file($this->getFullPath($filename)); } public function getUrl($filename) { return get_self_url_prefix() . "/public.php?op=cached_url&file=" . basename($this->dir) . "/" . $filename; } // check for locally cached (media) URLs and rewrite to local versions // this is called separately after sanitize() and plugin render article hooks to allow // plugins work on original source URLs used before caching // NOTE: URLs should be already absolutized because this is called after sanitize() static public function rewriteUrls($str) { $res = trim($str); if (!$res) return ''; $doc = new DOMDocument(); if ($doc->loadHTML('' . $res)) { $xpath = new DOMXPath($doc); $cache = new DiskCache("images"); $entries = $xpath->query('(//img[@src]|//source[@src|@srcset]|//video[@poster|@src])'); $need_saving = false; foreach ($entries as $entry) { foreach (array('src', 'poster') as $attr) { if ($entry->hasAttribute($attr)) { $url = $entry->getAttribute($attr); $cached_filename = sha1($url); if ($cache->exists($cached_filename)) { $url = $cache->getUrl($cached_filename); $entry->setAttribute($attr, $url); $entry->removeAttribute("srcset"); $need_saving = true; } } } if ($entry->hasAttribute("srcset")) { $matches = RSSUtils::decode_srcset($entry->getAttribute('srcset')); for ($i = 0; $i < count($matches); $i++) { $cached_filename = sha1($matches[$i]["url"]); if ($cache->exists($cached_filename)) { $matches[$i]["url"] = $cache->getUrl($cached_filename); $need_saving = true; } } $entry->setAttribute("srcset", RSSUtils::encode_srcset($matches)); } } if ($need_saving) { $doc->removeChild($doc->firstChild); //remove doctype $res = $doc->saveHTML(); } } return $res; } static function expire() { $dirs = array_filter(glob(CACHE_DIR . "/*"), "is_dir"); foreach ($dirs as $cache_dir) { $num_deleted = 0; if (is_writable($cache_dir) && !file_exists("$cache_dir/.no-auto-expiry")) { $files = glob("$cache_dir/*"); if ($files) { foreach ($files as $file) { if (time() - filemtime($file) > 86400*CACHE_MAX_DAYS) { unlink($file); ++$num_deleted; } } } Debug::log("Expired $cache_dir: removed $num_deleted files."); } } } }