moved

Author: devayes

master.css renamed to css/master.css

@@ -0,0 +1,24 @@
+<?php
+/* evercookie, by samy kamkar, 09/20/2010
+ *  http://samy.pl : [email protected]
+ *
+ * This is the server-side simple caching mechanism.
+ *
+ * -samy kamkar
+ */
+
+// we don't have a cookie, user probably deleted it, force cache
+if (!$_COOKIE["evercookie_cache"])
+{
+	header("HTTP/1.1 304 Not Modified");
+	exit;
+}
+
+header('Content-Type: text/html');
+header('Last-Modified: Wed, 30 Jun 2010 21:36:48 GMT');
+header('Expires: Tue, 31 Dec 2030 23:30:45 GMT');
+header('Cache-Control: private, max-age=630720000');
+
+echo $_COOKIE["evercookie_cache"];
+
+?>

swfobject-2.2.min.js renamed to js/swfobject-2.2.min.js

@@ -0,0 +1,52 @@
+<?php
+/* evercookie, by samy kamkar, 09/20/2010
+ *  http://samy.pl : [email protected]
+ *
+ * This is the server-side ETag software which tags a user by
+ * using the Etag HTTP header, as well as If-None-Match to check
+ * if the user has been tagged before.
+ *
+ * -samy kamkar
+ */
+
+// we don't have a cookie, so we're not setting it
+if (!isset($_COOKIE['evercookie_etag']) || empty($_COOKIE['evercookie_etag'])) {
+    // read our etag and pass back
+    if (!function_exists('apache_request_headers')) {
+
+        function apache_request_headers()
+        {
+            // Source: http://www.php.net/manual/en/function.apache-request-headers.php#70810
+            $arh = array();
+            $rx_http = '/\AHTTP_/';
+            foreach ($_SERVER as $key => $val) {
+                if (preg_match($rx_http, $key)) {
+                    $arh_key = preg_replace($rx_http, '', $key);
+                    $rx_matches = array();
+                    // do some nasty string manipulations to restore the original letter case
+                    // this should work in most cases
+                    $rx_matches = explode('_', $arh_key);
+                    if (count($rx_matches) > 0 and strlen($arh_key) > 2) {
+                        foreach ($rx_matches as $ak_key => $ak_val) {
+                            $rx_matches[$ak_key] = ucfirst($ak_val);
+                        }
+                        $arh_key = implode('-', $rx_matches);
+                    }
+                    $arh[$arh_key] = $val;
+                }
+            }
+
+            return ($arh);
+        }
+    }
+
+    $headers = apache_request_headers();
+    echo $headers['If-None-Match'];
+
+    header('Etag: $headers["If-None-Match"]')
+		exit;
+}
+
+// set our etag
+header('Etag: ' . $_COOKIE['evercookie_etag']);
+echo $_COOKIE['evercookie_etag'];

php/evercookie_cache.php

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+<?php
+/* evercookie, by samy kamkar, 09/20/2010
+ *  http://samy.pl : [email protected]
+ *
+ * This is the server-side variable PNG generator for evercookie.
+ * If an HTTP cookie is passed, the cookie data gets converted into
+ * RGB-values in a PNG image. The PNG image is printed out with a
+ * 20-year cache expiration date.
+ *
+ * If for any reason this file is accessed again WITHOUT the cookie,
+ * as in the user deleted their cookie, the code returns back with
+ * a forced "Not Modified" meaning the browser should look at its
+ * cache for the image.
+ *
+ * The client-side code then places the cached image in a canvas and
+ * reads it in pixel by pixel, converting the PNG back into a cookie.
+ *
+ * -samy kamkar
+ */
+
+// we don't have a cookie, user probably deleted it, force cache
+if (!$_COOKIE["evercookie_png"])
+{
+	header("HTTP/1.1 304 Not Modified");
+	exit;
+}
+
+// width of 200 means 600 bytes (3 RGB bytes per pixel)
+$x = 200;
+$y = 1;
+
+$gd = imagecreatetruecolor($x, $y);
+
+$data_arr = str_split($_COOKIE["evercookie_png"]);
+
+$x = 0;
+$y = 0;
+for ($i = 0; $i < count($data_arr); $i += 3)
+{
+	$color = imagecolorallocate($gd, ord($data_arr[$i]), ord($data_arr[$i+1]), ord($data_arr[$i+2]));
+	imagesetpixel($gd, $x++, $y, $color);
+}
+ 
+header('Content-Type: image/png');
+header('Last-Modified: Wed, 30 Jun 2010 21:36:48 GMT');
+header('Expires: Tue, 31 Dec 2030 23:30:45 GMT');
+header('Cache-Control: private, max-age=630720000');
+
+// boom. headshot.
+imagepng($gd);
+
+?>