Referral tracking

index.html

@@ -61,19 +61,7 @@
 
     <script src="article.js"></script>
   
-    <!-- for social stuff -->
-    <script type="text/disabled">
-      if(window.location.toString().indexOf("localhost") === -1) {
-        // no tracking info: http://support.addthis.com/customer/portal/articles/1013558-removing-all-hashtags-anchors-from-your-urls
-        var addthis_config = addthis_config||{};
-        addthis_config.data_track_clickback = false;
-        addthis_config.data_track_addressbar = false;
-        var script = document.createElement("script");
-        script.setAttribute("async", true);
-        script.src = "http://s7.addthis.com/js/300/addthis_widget.js#pubid=xa-516a3187281448fc";
-        document.head.appendChild(script);
-      }
-    </script>
-    
+    <!-- referral tracking, because I like knowing who's linking to my book -->  
+    <script src="lib/site/referrer.js" async></script>
   </body>
 </html>

lib/site/referrer.js

@@ -0,0 +1,39 @@
+/**
+ * This script collects information on visitors, based
+ * on their client session. It finds out which page they
+ * were on when they go there, and by virtue of sending
+ * that information to the logger, their IP. This is
+ * information that you're sending already, anyway, but
+ * I want you to know that this is what's going on.
+ *
+ * Which is why this script is not obfuscated. It simply
+ * grabs your document.referrer value, which (unless Do
+ * Not Track is enabled) will contain the location of
+ * the page you were on before you clicked a link to this
+ * page, and GETs that to my logger. That GET operation
+ * comes from your computer, so will have your IP as part
+ * of the HTTP headers.
+ *
+ * And that's all I really care about, because I want to
+ * know how many people visit this page, and roughly where
+ * they're from (gasp! IPs can be turned into rough
+ * geographical location O_O).
+ *
+ * If you want to know what logger.php looks like, hit up
+ * github. It's in referrer/logger.php
+ *
+ */
+(function referrer(l) {
+  var page = l.substring(l.lastIndexOf('/')+1).replace(".html",'');
+  page = page || "index.html";
+  // we don't care about file or localhost, for obvious reasons
+  var loc = window.location.toString();
+  if(loc.indexOf("file:///")!==-1) return;
+  if(loc.indexOf("localhost")!==-1) return;
+  // right, continue
+  var url = "http://pomax.nihongoresources.com/pages/bezierinfo/logger.php";
+  var xhr = new XMLHttpRequest();
+  xhr.open("GET", url + "?" + "referrer=" + encodeURIComponent(document.referrer) + "&for=" + page, true);
+  try { xhr.send(null); }
+  catch(e) { /* you don't care about this error, and I can't see it, so why would we do anything with it? */ }
+}(window.location.toString()));