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<?php
/**
* DokuWiki indexer
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <andi@splitbrain.org>
*/
if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/');
require_once(DOKU_INC.'inc/init.php');
require_once(DOKU_INC.'inc/auth.php');
require_once(DOKU_INC.'inc/events.php');
session_write_close(); //close session
if(!defined('NL')) define('NL',"\n");
// keep running after browser closes connection
@ignore_user_abort(true);
// check if user abort worked, if yes send output early
if(@ignore_user_abort()){
sendGIF(); // send gif
$defer = false;
}else{
$defer = true;
}
// Catch any possible output (e.g. errors)
if(!$_REQUEST['debug']) ob_start();
// run one of the jobs
runIndexer() or metaUpdate() or runSitemapper();
if($defer) sendGIF();
if(!$_REQUEST['debug']) ob_end_clean();
exit;
// --------------------------------------------------------------------
/**
* Runs the indexer for the current page
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function runIndexer(){
global $conf;
print "runIndexer(): started".NL;
$ID = cleanID($_REQUEST['id']);
if(!$ID) return false;
// check if indexing needed
$last = @filemtime(metaFN($ID,'.indexed'));
if($last > @filemtime(wikiFN($ID))){
print "runIndexer(): index for $ID up to date".NL;
return false;
}
// try to aquire a lock
$lock = $conf['lockdir'].'/_indexer.lock';
while(!@mkdir($lock,$conf['dmode'])){
usleep(50);
if(time()-@filemtime($lock) > 60*5){
// looks like a stale lock - remove it
@rmdir($lock);
print "runIndexer(): stale lock removed".NL;
}else{
print "runIndexer(): indexer locked".NL;
return false;
}
}
if($conf['dperm']) chmod($lock, $conf['dperm']);
require_once(DOKU_INC.'inc/indexer.php');
// do the work
idx_addPage($ID);
// we're finished - save and free lock
io_saveFile(metaFN($ID,'.indexed'),' ');
@rmdir($lock);
print "runIndexer(): finished".NL;
return true;
}
/**
* Will render the metadata for the page if not exists yet
*
* This makes sure pages which are created from outside DokuWiki will
* gain their data when viewed for the first time.
*/
function metaUpdate(){
print "metaUpdate(): started".NL;
$ID = cleanID($_REQUEST['id']);
if(!$ID) return false;
$file = metaFN($ID, '.meta');
echo "meta file: $file".NL;
// rendering needed?
if (@file_exists($file)) return false;
if (!@file_exists(wikiFN($ID))) return false;
require_once(DOKU_INC.'inc/common.php');
require_once(DOKU_INC.'inc/parserutils.php');
global $conf;
// gather some additional info from changelog
$info = io_grep($conf['changelog'],
'/^(\d+)\t(\d+\.\d+\.\d+\.\d+)\t'.preg_quote($ID,'/').'\t([^\t]+)\t([^\t\n]+)/',
0,true);
$meta = array();
if(count($info)){
$meta['date']['created'] = $info[0][1];
foreach($info as $item){
if($item[4] != '*'){
$meta['date']['modified'] = $item[1];
if($item[3]){
$meta['contributor'][$item[3]] = $item[3];
}
}
}
}
$meta = p_render_metadata($ID, $meta);
io_saveFile($file, serialize($meta));
echo "metaUpdate(): finished".NL;
return true;
}
/**
* Builds a Google Sitemap of all public pages known to the indexer
*
* The map is placed in the root directory named sitemap.xml.gz - This
* file needs to be writable!
*
* @author Andreas Gohr
* @link https://www.google.com/webmasters/sitemaps/docs/en/about.html
*/
function runSitemapper(){
global $conf;
print "runSitemapper(): started".NL;
if(!$conf['sitemap']) return false;
if($conf['usegzip']){
$sitemap = 'sitemap.xml.gz';
}else{
$sitemap = 'sitemap.xml';
}
print "runSitemapper(): using $sitemap".NL;
if(!is_writable(DOKU_INC.$sitemap)) return false;
if(@filesize(DOKU_INC.$sitemap) &&
@filemtime(DOKU_INC.$sitemap) > (time()-($conf['sitemap']*60*60*24))){
print 'runSitemapper(): Sitemap up to date'.NL;
return false;
}
$pages = file($conf['cachedir'].'/page.idx');
print 'runSitemapper(): creating sitemap using '.count($pages).' pages'.NL;
// build the sitemap
ob_start();
print '<?xml version="1.0" encoding="UTF-8"?>'.NL;
print '<urlset xmlns="http://www.google.com/schemas/sitemap/0.84">'.NL;
foreach($pages as $id){
$id = trim($id);
$file = wikiFN($id);
//skip hidden, non existing and restricted files
if(isHiddenPage($id)) continue;
$date = @filemtime($file);
if(!$date) continue;
if(auth_aclcheck($id,'','') < AUTH_READ) continue;
print ' <url>'.NL;
print ' <loc>'.wl($id,'',true).'</loc>'.NL;
print ' <lastmod>'.date_iso8601($date).'</lastmod>'.NL;
print ' </url>'.NL;
}
print '</urlset>'.NL;
$data = ob_get_contents();
ob_end_clean();
//save the new sitemap
io_saveFile(DOKU_INC.$sitemap,$data);
print 'runSitemapper(): pinging google'.NL;
//ping google
$url = 'http://www.google.com/webmasters/sitemaps/ping?sitemap=';
$url .= urlencode(DOKU_URL.$sitemap);
$http = new DokuHTTPClient();
$http->get($url);
if($http->error) print 'runSitemapper(): '.$http->error.NL;
print 'runSitemapper(): finished'.NL;
return true;
}
/**
* Formats a timestamp as ISO 8601 date
*
* @author <ungu at terong dot com>
* @link http://www.php.net/manual/en/function.date.php#54072
*/
function date_iso8601($int_date) {
//$int_date: current date in UNIX timestamp
$date_mod = date('Y-m-d\TH:i:s', $int_date);
$pre_timezone = date('O', $int_date);
$time_zone = substr($pre_timezone, 0, 3).":".substr($pre_timezone, 3, 2);
$date_mod .= $time_zone;
return $date_mod;
}
/**
* Just send a 1x1 pixel blank gif to the browser
*
* @author Andreas Gohr <andi@splitbrain.org>
* @author Harry Fuecks <fuecks@gmail.com>
*/
function sendGIF(){
if($_REQUEST['debug']){
header('Content-Type: text/plain');
return;
}
$img = base64_decode('R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAEALAAAAAABAAEAAAIBTAA7');
header('Content-Type: image/gif');
header('Content-Length: '.strlen($img));
header('Connection: Close');
print $img;
flush();
// Browser should drop connection after this
// Thinks it's got the whole image
}
//Setup VIM: ex: et ts=4 enc=utf-8 :
// No trailing PHP closing tag - no output please!
// See Note at http://www.php.net/manual/en/language.basic-syntax.instruction-separation.php
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