X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/ab6a99677293c9ddb96a717f03b8a009e98ab955..94d795883f36485c3da866f8979cab07d28194c0:/lib/init-website.php

diff --git a/lib/init-website.php b/lib/init-website.php
index d21ca7af..fff33936 100644
--- a/lib/init-website.php
+++ b/lib/init-website.php
@@ -1,19 +1,58 @@
 <?php
-
 	require_once('init.php');
 
-	if (CONST_ClosedForIndexing && strpos(CONST_ClosedForIndexingExceptionIPs, ','.$_SERVER["REMOTE_ADDR"].',') === false)
- 	{
-		echo "Closed for re-indexing...";
-		exit;
+	if (CONST_NoAccessControl)
+	{
+		header("Access-Control-Allow-Origin: *");
+		header("Access-Control-Allow-Methods: OPTIONS,GET");
+		if (!empty($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']))
+		{
+			header("Access-Control-Allow-Headers: ".$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']);
+		}
+	}
+	if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') exit;
+
+	$aBucketKeys = array();
+
+	if (isset($_SERVER["HTTP_REFERER"])) $aBucketKeys[] = str_replace('www.','',strtolower(parse_url($_SERVER["HTTP_REFERER"], PHP_URL_HOST)));
+	if (isset($_SERVER["REMOTE_ADDR"])) $aBucketKeys[] = $_SERVER["REMOTE_ADDR"];
+	if (isset($_GET["email"])) $aBucketKeys[] = $_GET["email"];
+
+	$fBucketVal = doBucket($aBucketKeys, 
+			(defined('CONST_ConnectionBucket_PageType')?constant('CONST_ConnectionBucket_Cost_'.CONST_ConnectionBucket_PageType):1) + user_busy_cost(),
+			CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_BlockLimit);
+
+	if ($fBucketVal > CONST_ConnectionBucket_WaitLimit && $fBucketVal < CONST_ConnectionBucket_BlockLimit)
+	{
+		$m = getBucketMemcache();
+		$iCurrentSleeping = $m->increment('sleepCounter');
+		if (false === $iCurrentSleeping)
+		{
+			$m->add('sleepCounter', 0);
+			$iCurrentSleeping = $m->increment('sleepCounter');
+		}
+		if ($iCurrentSleeping >= CONST_ConnectionBucket_MaxSleeping || isBucketSleeping($aBucketKeys))
+		{
+			// Too many threads sleeping already.  This becomes a hard block.
+			$fBucketVal = doBucket($aBucketKeys, CONST_ConnectionBucket_BlockLimit, CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_BlockLimit);
+		}
+		else
+		{
+			setBucketSleeping($aBucketKeys, true);
+			sleep(($fBucketVal - CONST_ConnectionBucket_WaitLimit)/CONST_ConnectionBucket_LeakRate);
+			$fBucketVal = doBucket($aBucketKeys, CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_BlockLimit);
+			setBucketSleeping($aBucketKeys, false);
+		}
+		$m->decrement('sleepCounter');
 	}
 
-	if (strpos(CONST_BlockedIPs, ','.$_SERVER["REMOTE_ADDR"].',') !== false)
+	if (strpos(CONST_BlockedIPs, ','.$_SERVER["REMOTE_ADDR"].',') !== false || $fBucketVal >= CONST_ConnectionBucket_BlockLimit)
 	{
+		header("HTTP/1.0 429 Too Many Requests");
 		echo "Your IP has been blocked. \n";
-		echo "Please create a nominatim trac ticket (http://trac.openstreetmap.org/newticket?component=nominatim) to request this to be removed. \n";
-		echo "Information on the Nominatim usage policy can be found here: http://wiki.openstreetmap.org/wiki/Nominatim#Usage_Policy \n";
+		echo CONST_BlockMessage;
 		exit;
 	}
 
 	header('Content-type: text/html; charset=utf-8');
+