lib/init-website.php

   1 <?php
   2     require_once('init.php');
   3
   4     header('Content-type: text/html; charset=utf-8');
   5
   6     // check blocks in place for external servers
   7     if (strpos($_SERVER["REMOTE_ADDR"],'193.63.75.') !== 0 &&
   8         strpos(CONST_WhitelistedIPs, ','.$_SERVER["REMOTE_ADDR"].',') === false)
   9     {
  10
  11         $aBucketKeys = array();
  12
  13         if (isset($_SERVER["HTTP_REFERER"])) $aBucketKeys[] = str_replace('www.','',strtolower(parse_url($_SERVER["HTTP_REFERER"], PHP_URL_HOST)));
  14         if (isset($_SERVER["REMOTE_ADDR"])) $aBucketKeys[] = $_SERVER["REMOTE_ADDR"];
  15         if (isset($_GET["email"])) $aBucketKeys[] = $_GET["email"];
  16
  17         $fBucketVal = doBucket($aBucketKeys,
  18                         (defined('CONST_ConnectionBucket_PageType')?constant('CONST_ConnectionBucket_Cost_'.CONST_ConnectionBucket_PageType):1) + user_busy_cost(),
  19                         CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_BlockLimit);
  20
  21         if ($fBucketVal > CONST_ConnectionBucket_WaitLimit && $fBucketVal < CONST_ConnectionBucket_BlockLimit)
  22         {
  23                 $m = getBucketMemcache();
  24                 $iCurrentSleeping = $m->increment('sleepCounter');
  25                 if (false === $iCurrentSleeping)
  26                 {
  27                         $m->add('sleepCounter', 0);
  28                         $iCurrentSleeping = $m->increment('sleepCounter');
  29                 }
  30                 if ($iCurrentSleeping >= CONST_ConnectionBucket_MaxSleeping || isBucketSleeping($aBucketKeys))
  31                 {
  32                         // Too many threads sleeping already.  This becomes a hard block.
  33                         $fBucketVal = doBucket($aBucketKeys, CONST_ConnectionBucket_BlockLimit, CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_BlockLimit);
  34                 }
  35                 else
  36                 {
  37                         setBucketSleeping($aBucketKeys, true);
  38                         sleep(($fBucketVal - CONST_ConnectionBucket_WaitLimit)/CONST_ConnectionBucket_LeakRate);
  39                         $fBucketVal = doBucket($aBucketKeys, CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_BlockLimit);
  40                         setBucketSleeping($aBucketKeys, false);
  41                 }
  42                 $m->decrement('sleepCounter');
  43         }
  44
  45         if (strpos(CONST_BlockedIPs, ','.$_SERVER["REMOTE_ADDR"].',') !== false || $fBucketVal >= CONST_ConnectionBucket_BlockLimit)
  46         {
  47                 echo "Your IP has been blocked. \n";
  48                 echo "Please create a nominatim trac ticket (http://trac.openstreetmap.org/newticket?component=nominatim) to request this to be removed. \n";
  49                 echo "Information on the Nominatim usage policy can be found here: http://wiki.openstreetmap.org/wiki/Nominatim#Usage_Policy \n";
  50                 exit;
  51         }