refs #2048 - update DoNotTrack plugin to conform to core plugin style; update...

refs #2048 - update DoNotTrack plugin to conform to core plugin style; update DNT detection to only look at the 1st character per TPE working draft; enable by default in config

git-svn-id: http://dev.piwik.org/svn/trunk@6202 59fd770c-687e-43c8-a1e3-f5a4ff64c105

config/global.ini.php

@@ -350,6 +350,9 @@ page_maximum_length = 1024;
 ; For IPv4 addresses, valid values are 0..4; for IPv6 addresses, valid values are 0..16
 ip_address_mask_length = 1
 
+; Ignore visits with X-Do-Not-Track or DNT header
+do_not_track = 1
+
 ; DO NOT USE THIS SETTING ON PUBLICLY AVAILABLE PIWIK SERVER
 ; !!! Security risk: if set to 0, it would allow anyone to push data to Piwik with custom dates in the past/future and with fake IPs !!!
 ; When using the Tracking API, to override either the datetime and/or the visitor IP, 
@@ -478,6 +481,7 @@ Plugins[] 		= Live
 Plugins[]		= CustomVariables
 Plugins[]		= PrivacyManager
 Plugins[]		= ImageGraph
+Plugins[]		= DoNotTrack
 
 [PluginsInstalled]
 PluginsInstalled[] = Login
@@ -489,3 +493,4 @@ PluginsInstalled[] = Installation
 [Plugins_Tracker]
 Plugins_Tracker[] = Provider
 Plugins_Tracker[] = Goals
+Plugins_Tracker[] = DoNotTrack

plugins/DoNotTrack/DoNotTrack.php

 <?php
 /**
  * Piwik - Open source web analytics
- * 
+ *
  * @link http://piwik.org
  * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
  * @version $Id$
- * 
+ *
  * @category Piwik_Plugins
  * @package Piwik_DoNotTrack
  */
@@ -30,14 +30,14 @@ class Piwik_DoNotTrack extends Piwik_Plugin
 	{
 		return array(
 			'description' => 'Ignore visits with X-Do-Not-Track or DNT header',
-			'author' => 'VIP Software Technologies Inc.',
-			'author_homepage' => 'http://activeanalytics.com/',
-			'version' => '0.3',
+			'author' => 'Piwik',
+			'author_homepage' => 'http://piwik.org/',
+			'version' => Piwik_Version::VERSION,
 			'translationAvailable' => false,
 			'TrackerPlugin' => true,
 		);
 	}
-	
+
 	public function getListHooksRegistered()
 	{
 		return array(
@@ -47,16 +47,16 @@ class Piwik_DoNotTrack extends Piwik_Plugin
 
 	function checkHeader($notification)
 	{
-		$setting = @Piwik_Tracker_Config::getInstance()->Tracker['do_not_track'];
+		$setting = @Piwik_Config::getInstance()->Tracker['do_not_track'];
 		if($setting === '1' &&
 			((isset($_SERVER['HTTP_X_DO_NOT_TRACK']) && $_SERVER['HTTP_X_DO_NOT_TRACK'] === '1') ||
-			(isset($_SERVER['HTTP_DNT']) && $_SERVER['HTTP_DNT'] === '1')))
+			(isset($_SERVER['HTTP_DNT']) && substr($_SERVER['HTTP_DNT'], 0, 1) === '1')))
 		{
 			$exclude =& $notification->getNotificationObject();
 			$exclude = true;
 
 			$trackingCookie = Piwik_Tracker_IgnoreCookie::getTrackingCookie();
-			$trackingCookie->delete();			
+			$trackingCookie->delete();
 		}
 	}
 }