1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 | <?php /** Copyright 2009 Google Inc. All Rights Reserved. **/ // Tracker version. define("VERSION", "4.4sh"); define("COOKIE_NAME", "__utmmobile"); // The path the cookie will be available to, edit this to use a different // cookie path. define("COOKIE_PATH", "/"); // Two years in seconds. define("COOKIE_USER_PERSISTENCE", 63072000); // 1x1 transparent GIF $GIF_DATA = array( chr(0x47), chr(0x49), chr(0x46), chr(0x38), chr(0x39), chr(0x61), chr(0x01), chr(0x00), chr(0x01), chr(0x00), chr(0x80), chr(0xff), chr(0x00), chr(0xff), chr(0xff), chr(0xff), chr(0x00), chr(0x00), chr(0x00), chr(0x2c), chr(0x00), chr(0x00), chr(0x00), chr(0x00), chr(0x01), chr(0x00), chr(0x01), chr(0x00), chr(0x00), chr(0x02), chr(0x02), chr(0x44), chr(0x01), chr(0x00), chr(0x3b) ); // The last octect of the IP address is removed to anonymize the user. function getIP($remoteAddress) { if (empty($remoteAddress)) { return ""; } // Capture the first three octects of the IP address and replace the forth // with 0, e.g. 124.455.3.123 becomes 124.455.3.0 $regex = "/^([^.]+\.[^.]+\.[^.]+\.).*/"; if (preg_match($regex, $remoteAddress, $matches)) { return $matches[1] . "0"; } else { return ""; } } // Generate a visitor id for this hit. // If there is a visitor id in the cookie, use that, otherwise // use the guid if we have one, otherwise use a random number. function getVisitorId($guid, $account, $userAgent, $cookie) { // If there is a value in the cookie, don't change it. if (!empty($cookie)) { return $cookie; } $message = ""; if (!empty($guid)) { // Create the visitor id using the guid. $message = $guid . $account; } else { // otherwise this is a new user, create a new random id. $message = $userAgent . uniqid(getRandomNumber(), true); } $md5String = md5($message); return "0x" . substr($md5String, 0, 16); } // Get a random number string. function getRandomNumber() { return rand(0, 0x7fffffff); } // Writes the bytes of a 1x1 transparent gif into the response. function writeGifData() { global $GIF_DATA; header("Content-Type: image/gif"); header("Cache-Control: " . "private, no-cache, no-cache=Set-Cookie, proxy-revalidate"); header("Pragma: no-cache"); header("Expires: Wed, 17 Sep 1975 21:32:10 GMT"); echo join($GIF_DATA); } // Make a tracking request to Google Analytics from this server. // Copies the headers from the original request to the new one. // If request containg utmdebug parameter, exceptions encountered // communicating with Google Analytics are thown. function sendRequestToGoogleAnalytics($utmUrl) { $options = array( "http" => array( "method" => "GET", "user_agent" => $_SERVER["HTTP_USER_AGENT"], "header" => ("Accepts-Language: " . $_SERVER["HTTP_ACCEPT_LANGUAGE"])) ); if (!empty($_GET["utmdebug"])) { $data = file_get_contents( $utmUrl, false, stream_context_create($options)); } else { $data = @file_get_contents( $utmUrl, false, stream_context_create($options)); } } // Track a page view, updates all the cookies and campaign tracker, // makes a server side request to Google Analytics and writes the transparent // gif byte data to the response. function trackPageView() { $timeStamp = time(); $domainName = $_SERVER["SERVER_NAME"]; if (empty($domainName)) { $domainName = ""; } // Get the referrer from the utmr parameter, this is the referrer to the // page that contains the tracking pixel, not the referrer for tracking // pixel. $documentReferer = $_GET["utmr"]; if (empty($documentReferer) && $documentReferer !== "0") { $documentReferer = "-"; } else { $documentReferer = urldecode($documentReferer); } $documentPath = $_GET["utmp"]; if (empty($documentPath)) { $documentPath = ""; } else { $documentPath = urldecode($documentPath); } $account = $_GET["utmac"]; $userAgent = $_SERVER["HTTP_USER_AGENT"]; if (empty($userAgent)) { $userAgent = ""; } // Try and get visitor cookie from the request. $cookie = $_COOKIE[COOKIE_NAME]; $guidHeader = $_SERVER["HTTP_X_DCMGUID"]; if (empty($guidHeader)) { $guidHeader = $_SERVER["HTTP_X_UP_SUBNO"]; } if (empty($guidHeader)) { $guidHeader = $_SERVER["HTTP_X_JPHONE_UID"]; } if (empty($guidHeader)) { $guidHeader = $_SERVER["HTTP_X_EM_UID"]; } $visitorId = getVisitorId($guidHeader, $account, $userAgent, $cookie); // Always try and add the cookie to the response. setrawcookie( COOKIE_NAME, $visitorId, $timeStamp + COOKIE_USER_PERSISTENCE, COOKIE_PATH); $utmGifLocation = "http://www.google-analytics.com/__utm.gif"; // Construct the gif hit url. $utmUrl = $utmGifLocation . "?" . "utmwv=" . VERSION . "&utmn=" . getRandomNumber() . "&utmhn=" . urlencode($domainName) . "&utmr=" . urlencode($documentReferer) . "&utmp=" . urlencode($documentPath) . "&utmac=" . $account . "&utmcc=__utma%3D999.999.999.999.999.1%3B" . "&utmvid=" . $visitorId . "&utmip=" . getIP($_SERVER["REMOTE_ADDR"]); sendRequestToGoogleAnalytics($utmUrl); // If the debug parameter is on, add a header to the response that contains // the url that was used to contact Google Analytics. if (!empty($_GET["utmdebug"])) { header("X-GA-MOBILE-URL:" . $utmUrl); } // Finally write the gif data to the response. writeGifData(); } ?><?php trackPageView(); ?> |