diff --git a/lib/exe/fetch.php b/lib/exe/fetch.php index 52e7ebe1e10e807f82fc6b76eded65d2963600f5..f86809320f61dbd65c62b6d9b328b937bf6cd656 100644 --- a/lib/exe/fetch.php +++ b/lib/exe/fetch.php @@ -6,84 +6,84 @@ * @author Andreas Gohr <andi@splitbrain.org> */ - if(!defined('DOKU_INC')) define('DOKU_INC',dirname(__FILE__).'/../../'); - define('DOKU_DISABLE_GZIP_OUTPUT', 1); - require_once(DOKU_INC.'inc/init.php'); - - //close session - session_write_close(); - - $mimetypes = getMimeTypes(); - - //get input - $MEDIA = stripctl(getID('media',false)); // no cleaning except control chars - maybe external - $CACHE = calc_cache($INPUT->str('cache')); - $WIDTH = $INPUT->int('w'); - $HEIGHT = $INPUT->int('h'); - $REV = &$INPUT->ref('rev'); - //sanitize revision - $REV = preg_replace('/[^0-9]/','',$REV); - - list($EXT,$MIME,$DL) = mimetype($MEDIA,false); - if($EXT === false){ +if(!defined('DOKU_INC')) define('DOKU_INC', dirname(__FILE__).'/../../'); +define('DOKU_DISABLE_GZIP_OUTPUT', 1); +require_once(DOKU_INC.'inc/init.php'); +//close session +session_write_close(); + +$mimetypes = getMimeTypes(); + +//get input +$MEDIA = stripctl(getID('media', false)); // no cleaning except control chars - maybe external +$CACHE = calc_cache($INPUT->str('cache')); +$WIDTH = $INPUT->int('w'); +$HEIGHT = $INPUT->int('h'); +$REV = & $INPUT->ref('rev'); +//sanitize revision +$REV = preg_replace('/[^0-9]/', '', $REV); + +list($EXT, $MIME, $DL) = mimetype($MEDIA, false); +if($EXT === false) { $EXT = 'unknown'; $MIME = 'application/octet-stream'; $DL = true; - } - - // check for permissions, preconditions and cache external files - list($STATUS, $STATUSMESSAGE) = checkFileStatus($MEDIA, $FILE, $REV); - - // prepare data for plugin events - $data = array('media' => $MEDIA, - 'file' => $FILE, - 'orig' => $FILE, - 'mime' => $MIME, - 'download' => $DL, - 'cache' => $CACHE, - 'ext' => $EXT, - 'width' => $WIDTH, - 'height' => $HEIGHT, - 'status' => $STATUS, - 'statusmessage' => $STATUSMESSAGE, - ); - - // handle the file status - $evt = new Doku_Event('FETCH_MEDIA_STATUS', $data); - if ( $evt->advise_before() ) { +} + +// check for permissions, preconditions and cache external files +list($STATUS, $STATUSMESSAGE) = checkFileStatus($MEDIA, $FILE, $REV); + +// prepare data for plugin events +$data = array( + 'media' => $MEDIA, + 'file' => $FILE, + 'orig' => $FILE, + 'mime' => $MIME, + 'download' => $DL, + 'cache' => $CACHE, + 'ext' => $EXT, + 'width' => $WIDTH, + 'height' => $HEIGHT, + 'status' => $STATUS, + 'statusmessage' => $STATUSMESSAGE, +); + +// handle the file status +$evt = new Doku_Event('FETCH_MEDIA_STATUS', $data); +if($evt->advise_before()) { // redirects - if($data['status'] > 300 && $data['status'] <= 304){ - send_redirect($data['statusmessage']); + if($data['status'] > 300 && $data['status'] <= 304) { + send_redirect($data['statusmessage']); } // send any non 200 status - if($data['status'] != 200){ - header('HTTP/1.0 ' . $data['status'] . ' ' . $data['statusmessage']); + if($data['status'] != 200) { + header('HTTP/1.0 '.$data['status'].' '.$data['statusmessage']); } // die on errors - if($data['status'] > 203){ - print $data['statusmessage']; - exit; + if($data['status'] > 203) { + print $data['statusmessage']; + exit; } - } - $evt->advise_after(); - unset($evt); - - //handle image resizing/cropping - if((substr($MIME,0,5) == 'image') && $WIDTH){ - if($HEIGHT){ - $data['file'] = $FILE = media_crop_image($data['file'],$EXT,$WIDTH,$HEIGHT); - }else{ - $data['file'] = $FILE = media_resize_image($data['file'],$EXT,$WIDTH,$HEIGHT); +} +$evt->advise_after(); +unset($evt); + +//handle image resizing/cropping +if((substr($MIME, 0, 5) == 'image') && $WIDTH) { + if($HEIGHT) { + $data['file'] = $FILE = media_crop_image($data['file'], $EXT, $WIDTH, $HEIGHT); + } else { + $data['file'] = $FILE = media_resize_image($data['file'], $EXT, $WIDTH, $HEIGHT); } - } +} - // finally send the file to the client - $evt = new Doku_Event('MEDIA_SENDFILE', $data); - if ($evt->advise_before()) { - sendFile($data['file'],$data['mime'],$data['download'],$data['cache']); - } - // Do something after the download finished. - $evt->advise_after(); +// finally send the file to the client +$evt = new Doku_Event('MEDIA_SENDFILE', $data); +if($evt->advise_before()) { + sendFile($data['file'], $data['mime'], $data['download'], $data['cache']); +} +// Do something after the download finished. +$evt->advise_after(); /* ------------------------------------------------------------------------ */ @@ -93,51 +93,50 @@ * @author Andreas Gohr <andi@splitbrain.org> * @author Ben Coburn <btcoburn@silicodon.net> */ -function sendFile($file,$mime,$dl,$cache){ - global $conf; - $fmtime = @filemtime($file); - // send headers - header("Content-Type: $mime"); - // smart http caching headers - if ($cache==-1) { - // cache - // cachetime or one hour - header('Expires: '.gmdate("D, d M Y H:i:s", time()+max($conf['cachetime'], 3600)).' GMT'); - header('Cache-Control: public, proxy-revalidate, no-transform, max-age='.max($conf['cachetime'], 3600)); - header('Pragma: public'); - } else if ($cache>0) { - // recache - // remaining cachetime + 10 seconds so the newly recached media is used - header('Expires: '.gmdate("D, d M Y H:i:s", $fmtime+$conf['cachetime']+10).' GMT'); - header('Cache-Control: public, proxy-revalidate, no-transform, max-age='.max($fmtime-time()+$conf['cachetime']+10, 0)); - header('Pragma: public'); - } else if ($cache==0) { - // nocache - header('Cache-Control: must-revalidate, no-transform, post-check=0, pre-check=0'); - header('Pragma: public'); - } - //send important headers first, script stops here if '304 Not Modified' response - http_conditionalRequest($fmtime); - - - //download or display? - if($dl){ - header('Content-Disposition: attachment; filename="'.utf8_basename($file).'";'); - }else{ - header('Content-Disposition: inline; filename="'.utf8_basename($file).'";'); - } - - //use x-sendfile header to pass the delivery to compatible webservers - if (http_sendfile($file)) exit; - - // send file contents - $fp = @fopen($file,"rb"); - if($fp){ - http_rangeRequest($fp,filesize($file),$mime); - }else{ - header("HTTP/1.0 500 Internal Server Error"); - print "Could not read $file - bad permissions?"; - } +function sendFile($file, $mime, $dl, $cache) { + global $conf; + $fmtime = @filemtime($file); + // send headers + header("Content-Type: $mime"); + // smart http caching headers + if($cache == -1) { + // cache + // cachetime or one hour + header('Expires: '.gmdate("D, d M Y H:i:s", time() + max($conf['cachetime'], 3600)).' GMT'); + header('Cache-Control: public, proxy-revalidate, no-transform, max-age='.max($conf['cachetime'], 3600)); + header('Pragma: public'); + } else if($cache > 0) { + // recache + // remaining cachetime + 10 seconds so the newly recached media is used + header('Expires: '.gmdate("D, d M Y H:i:s", $fmtime + $conf['cachetime'] + 10).' GMT'); + header('Cache-Control: public, proxy-revalidate, no-transform, max-age='.max($fmtime - time() + $conf['cachetime'] + 10, 0)); + header('Pragma: public'); + } else if($cache == 0) { + // nocache + header('Cache-Control: must-revalidate, no-transform, post-check=0, pre-check=0'); + header('Pragma: public'); + } + //send important headers first, script stops here if '304 Not Modified' response + http_conditionalRequest($fmtime); + + //download or display? + if($dl) { + header('Content-Disposition: attachment; filename="'.utf8_basename($file).'";'); + } else { + header('Content-Disposition: inline; filename="'.utf8_basename($file).'";'); + } + + //use x-sendfile header to pass the delivery to compatible webservers + if(http_sendfile($file)) exit; + + // send file contents + $fp = @fopen($file, "rb"); + if($fp) { + http_rangeRequest($fp, filesize($file), $mime); + } else { + header("HTTP/1.0 500 Internal Server Error"); + print "Could not read $file - bad permissions?"; + } } /** @@ -148,43 +147,43 @@ function sendFile($file,$mime,$dl,$cache){ * * @author Gerry Weissbach <gerry.w@gammaproduction.de> * @param $media reference to the media id - * @param $file reference to the file variable + * @param $file reference to the file variable * @returns array(STATUS, STATUSMESSAGE) */ -function checkFileStatus(&$media, &$file, $rev='') { - global $MIME, $EXT, $CACHE, $INPUT; - - //media to local file - if(preg_match('#^(https?)://#i',$media)){ - //check hash - if(substr(md5(auth_cookiesalt().$media),0,6) !== $INPUT->str('hash')){ - return array( 412, 'Precondition Failed'); - } - //handle external images - if(strncmp($MIME,'image/',6) == 0) $file = media_get_from_URL($media,$EXT,$CACHE); - if(!$file){ - //download failed - redirect to original URL - return array( 302, $media ); - } - }else{ - $media = cleanID($media); - if(empty($media)){ - return array( 400, 'Bad request' ); +function checkFileStatus(&$media, &$file, $rev = '') { + global $MIME, $EXT, $CACHE, $INPUT; + + //media to local file + if(preg_match('#^(https?)://#i', $media)) { + //check hash + if(substr(md5(auth_cookiesalt().$media), 0, 6) !== $INPUT->str('hash')) { + return array(412, 'Precondition Failed'); + } + //handle external images + if(strncmp($MIME, 'image/', 6) == 0) $file = media_get_from_URL($media, $EXT, $CACHE); + if(!$file) { + //download failed - redirect to original URL + return array(302, $media); + } + } else { + $media = cleanID($media); + if(empty($media)) { + return array(400, 'Bad request'); + } + + //check permissions (namespace only) + if(auth_quickaclcheck(getNS($media).':X') < AUTH_READ) { + return array(403, 'Forbidden'); + } + $file = mediaFN($media, $rev); } - //check permissions (namespace only) - if(auth_quickaclcheck(getNS($media).':X') < AUTH_READ){ - return array( 403, 'Forbidden' ); + //check file existance + if(!@file_exists($file)) { + return array(404, 'Not Found'); } - $file = mediaFN($media, $rev); - } - - //check file existance - if(!@file_exists($file)){ - return array( 404, 'Not Found' ); - } - return array(200, null); + return array(200, null); } /** @@ -194,12 +193,12 @@ function checkFileStatus(&$media, &$file, $rev='') { * * @author Andreas Gohr <andi@splitbrain.org> */ -function calc_cache($cache){ - global $conf; +function calc_cache($cache) { + global $conf; - if(strtolower($cache) == 'nocache') return 0; //never cache - if(strtolower($cache) == 'recache') return $conf['cachetime']; //use standard cache - return -1; //cache endless + if(strtolower($cache) == 'nocache') return 0; //never cache + if(strtolower($cache) == 'recache') return $conf['cachetime']; //use standard cache + return -1; //cache endless } //Setup VIM: ex: et ts=2 :