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208 lines (181 loc) · 6.21 KB
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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',dirname(__FILE__).'/../../');
define('DOKU_DISABLE_GZIP_OUTPUT',1);
require_once(DOKU_INC.'inc/init.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
$defer = !@ignore_user_abort() || $conf['broken_iua'];
$output = $INPUT->has('debug') && $conf['allowdebug'];
if(!$defer && !$output){
sendGIF(); // send gif
}
$ID = cleanID($INPUT->str('id'));
// Catch any possible output (e.g. errors)
if(!$output) ob_start();
else header('Content-Type: text/plain');
// run one of the jobs
$tmp = array(); // No event data
$evt = new Doku_Event('INDEXER_TASKS_RUN', $tmp);
if ($evt->advise_before()) {
runIndexer() or
runSitemapper() or
sendDigest() or
runTrimRecentChanges() or
runTrimRecentChanges(true) or
$evt->advise_after();
}
if(!$output) {
ob_end_clean();
if($defer) sendGIF();
}
exit;
// --------------------------------------------------------------------
/**
* Trims the recent changes cache (or imports the old changelog) as needed.
*
* @param media_changes If the media changelog shall be trimmed instead of
* the page changelog
*
* @author Ben Coburn <btcoburn@silicodon.net>
*/
function runTrimRecentChanges($media_changes = false) {
global $conf;
echo "runTrimRecentChanges($media_changes): started".NL;
$fn = ($media_changes ? $conf['media_changelog'] : $conf['changelog']);
// Trim the Recent Changes
// Trims the recent changes cache to the last $conf['changes_days'] recent
// changes or $conf['recent'] items, which ever is larger.
// The trimming is only done once a day.
if (@file_exists($fn) &&
(@filemtime($fn.'.trimmed')+86400)<time() &&
!@file_exists($fn.'_tmp')) {
@touch($fn.'.trimmed');
io_lock($fn);
$lines = file($fn);
if (count($lines)<=$conf['recent']) {
// nothing to trim
io_unlock($fn);
echo "runTrimRecentChanges($media_changes): finished".NL;
return false;
}
io_saveFile($fn.'_tmp', ''); // presave tmp as 2nd lock
$trim_time = time() - $conf['recent_days']*86400;
$out_lines = array();
for ($i=0; $i<count($lines); $i++) {
$log = parseChangelogLine($lines[$i]);
if ($log === false) continue; // discard junk
if ($log['date'] < $trim_time) {
$old_lines[$log['date'].".$i"] = $lines[$i]; // keep old lines for now (append .$i to prevent key collisions)
} else {
$out_lines[$log['date'].".$i"] = $lines[$i]; // definitely keep these lines
}
}
if (count($lines)==count($out_lines)) {
// nothing to trim
@unlink($fn.'_tmp');
io_unlock($fn);
echo "runTrimRecentChanges($media_changes): finished".NL;
return false;
}
// sort the final result, it shouldn't be necessary,
// however the extra robustness in making the changelog cache self-correcting is worth it
ksort($out_lines);
$extra = $conf['recent'] - count($out_lines); // do we need extra lines do bring us up to minimum
if ($extra > 0) {
ksort($old_lines);
$out_lines = array_merge(array_slice($old_lines,-$extra),$out_lines);
}
// save trimmed changelog
io_saveFile($fn.'_tmp', implode('', $out_lines));
@unlink($fn);
if (!rename($fn.'_tmp', $fn)) {
// rename failed so try another way...
io_unlock($fn);
io_saveFile($fn, implode('', $out_lines));
@unlink($fn.'_tmp');
} else {
io_unlock($fn);
}
echo "runTrimRecentChanges($media_changes): finished".NL;
return true;
}
// nothing done
echo "runTrimRecentChanges($media_changes): finished".NL;
return false;
}
/**
* Runs the indexer for the current page
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function runIndexer(){
global $ID;
global $conf;
print "runIndexer(): started".NL;
if(!$ID) return false;
// do the work
return idx_addPage($ID, 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(){
print "runSitemapper(): started".NL;
$result = Sitemapper::generate() && Sitemapper::pingSearchEngines();
print 'runSitemapper(): finished'.NL;
return $result;
}
/**
* Send digest and list mails for all subscriptions which are in effect for the
* current page
*
* @author Adrian Lang <lang@cosmocode.de>
*/
function sendDigest() {
global $conf;
global $ID;
echo 'sendDigest(): started'.NL;
if(!actionOK('subscribe')) {
echo 'sendDigest(): disabled'.NL;
return false;
}
$sub = new Subscription();
$sent = $sub->send_bulk($ID);
echo "sendDigest(): sent $sent mails".NL;
echo 'sendDigest(): finished'.NL;
return (bool) $sent;
}
/**
* Just send a 1x1 pixel blank gif to the browser
*
* @author Andreas Gohr <andi@splitbrain.org>
* @author Harry Fuecks <fuecks@gmail.com>
*/
function sendGIF(){
$img = base64_decode('R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAEALAAAAAABAAEAAAIBTAA7');
header('Content-Type: image/gif');
header('Content-Length: '.strlen($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 :
// No trailing PHP closing tag - no output please!
// See Note at http://www.php.net/manual/en/language.basic-syntax.instruction-separation.php