From 5feb044149fb981a61d7a1b2d4ffe47207f0739f Mon Sep 17 00:00:00 2001
From: Skylar Ittner <admin@netsyms.com>
Date: Sat, 19 May 2018 00:51:58 -0600
Subject: [PATCH] Honor Do-Not-Track header

---
 lib/gatheranalytics.php | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/gatheranalytics.php b/lib/gatheranalytics.php
index 92e4821..279eb66 100644
--- a/lib/gatheranalytics.php
+++ b/lib/gatheranalytics.php
@@ -14,8 +14,13 @@ use GeoIp2\Database\Reader;
 require_once __DIR__ . "/requiredpublic.php";
 
 if (!$database->has("settings", ["AND" => ["siteid" => getsiteid(), "key" => "analytics", "value" => "off"]]) && !isset($_GET['edit'])) {
+
     try {
 
+        if (isset($_SERVER['HTTP_DNT']) && $_SERVER['HTTP_DNT'] === "1") {
+            throw new Exception("Do-Not-Track header detected, skipping analytics");
+        }
+
         $time = date("Y-m-d H:i:s");
 
         /**
@@ -101,5 +106,8 @@ if (!$database->has("settings", ["AND" => ["siteid" => getsiteid(), "key" => "an
         }
     } catch (Exception $e) {
         // Silently fail so the rest of the site still works
+        if (DEBUG) {
+            echo "<!-- Analytics error: " . $e->getMessage() . " -->";
+        }
     }
 }
\ No newline at end of file