<?php /** * Piwik - free/libre analytics platform * Piwik Proxy Hide URL * * @link http://piwik.org/faq/how-to/#faq_132 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later */ if (file_exists('config.php')) { if (file_exists('config.local.php')) { include 'config.local.php'; } include 'config.php'; } // ----- // Important: read the instructions in README.md or at: // https://github.com/piwik/piwik/tree/master/misc/proxy-hide-piwik-url#piwik-proxy-hide-url // ----- // Edit the line below, and replace http://your-piwik-domain.example.org/piwik/ // with your Piwik URL ending with a slash. // This URL will never be revealed to visitors or search engines. if (! isset($PIWIK_URL)) { $PIWIK_URL = 'http://your-piwik-domain.example.org/piwik/'; } // Edit the line below, and replace xyz by the token_auth for the user "UserTrackingAPI" // which you created when you followed instructions above. if (! isset($TOKEN_AUTH)) { $TOKEN_AUTH = 'xyz'; } // Maximum time, in seconds, to wait for the Piwik server to return the 1*1 GIF if (! isset($timeout)) { $timeout = 5; } function sendHeader($header, $replace = true) { headers_sent() || header($header, $replace); } function arrayValue($array, $key, $value = null) { if (!empty($array[$key])) { $value = $array[$key]; } return $value; } function getContents($useCurl, $url, $options = false) { if (!$useCurl && ini_get('allow_url_fopen')) { $ctx = ($options?stream_context_create($options):NULL); return file_get_contents($url, 0, $ctx); } elseif ($useCurl && function_exists('curl_version')) return piwikFileGetContentsCurl($url, $options); else return 'Neither url_fopen nor cURL is available. Please enable at least one of them.'; } function piwikFileGetContentsCurl($url, $options) { $ch = curl_init(); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_USERAGENT, $options['http']['user_agent']); curl_setopt($ch, CURLOPT_HTTPHEADER, array($options['http']['header'])); curl_setopt($ch, CURLOPT_TIMEOUT, $options['http']['timeout']); curl_setopt($ch, CURLOPT_URL, $url); $data = curl_exec($ch); curl_close($ch); return $data; } // DO NOT MODIFY BELOW // --------------------------- // 1) PIWIK.JS PROXY: No _GET parameter, we serve the JS file if (empty($_GET)) { $modifiedSince = false; if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) { $modifiedSince = $_SERVER['HTTP_IF_MODIFIED_SINCE']; // strip any trailing data appended to header if (false !== ($semicolon = strpos($modifiedSince, ';'))) { $modifiedSince = substr($modifiedSince, 0, $semicolon); } $modifiedSince = strtotime($modifiedSince); } // Re-download the piwik.js once a day maximum $lastModified = time() - 86400; // set HTTP response headers sendHeader('Vary: Accept-Encoding'); // Returns 304 if not modified since if (!empty($modifiedSince) && $modifiedSince > $lastModified) { sendHeader(sprintf("%s 304 Not Modified", $_SERVER['SERVER_PROTOCOL'])); } else { sendHeader('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT'); sendHeader('Content-Type: application/javascript; charset=UTF-8'); if ($piwikJs = getContents($useCurl, $PIWIK_URL . 'piwik.js')) { echo $piwikJs; } else { sendHeader($_SERVER['SERVER_PROTOCOL'] . '505 Internal server error'); } } exit; } @ini_set('magic_quotes_runtime', 0); // 2) PIWIK.PHP PROXY: GET parameters found, this is a tracking request, we redirect it to Piwik $url = sprintf("%spiwik.php?cip=%s&token_auth=%s&", $PIWIK_URL, getVisitIp(), $TOKEN_AUTH); foreach ($_GET as $key => $value) { $url .= urlencode($key ). '=' . urlencode($value) . '&'; } sendHeader("Content-Type: image/gif"); $stream_options = array('http' => array( 'user_agent' => arrayValue($_SERVER, 'HTTP_USER_AGENT', ''), 'header' => sprintf("Accept-Language: %s\r\n", str_replace(array("\n", "\t", "\r"), "", arrayValue($_SERVER, 'HTTP_ACCEPT_LANGUAGE', ''))), 'timeout' => $timeout )); if (version_compare(PHP_VERSION, '5.3.0', '<')) { // PHP 5.2 breaks with the new 204 status code so we force returning the image every time echo getContents($useCurl, $url . '&send_image=1', $stream_options); } else { // PHP 5.3 and above $content = getContents($useCurl, $url, $stream_options); // Forward the HTTP response code if (!headers_sent() && isset($http_response_header[0])) { header($http_response_header[0]); } echo $content; } function getVisitIp() { $matchIp = '/^([0-9]{1,3}\.){3}[0-9]{1,3}$/'; $ipKeys = array( 'HTTP_X_FORWARDED_FOR', 'HTTP_CLIENT_IP', 'HTTP_CF_CONNECTING_IP', ); foreach($ipKeys as $ipKey) { if (isset($_SERVER[$ipKey]) && preg_match($matchIp, $_SERVER[$ipKey])) { return $_SERVER[$ipKey]; } } return arrayValue($_SERVER, 'REMOTE_ADDR'); }