YuCheng Hu
cce83be4a7
+YUCHENG HU+ git-svn-id: https://svn.code.sf.net/p/hawebs/svn@485 a2543c7e-f6e9-4f8a-8bff-1ffc34733512
92 lines
2.5 KiB
PHP
92 lines
2.5 KiB
PHP
<?php
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/**
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* Piwik - Open source web analytics
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*
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* @link http://piwik.org
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* @license http://www.gnu.org/licenses/gpl-3.0.html Gpl v3 or later
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* @version $Id: index.php 2328 2010-06-21 22:36:37Z vipsoft $
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*/
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if(!empty($_SERVER['QUERY_STRING'])) {
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include '../piwik.php';
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exit;
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}
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$file = '../piwik.js';
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if (file_exists($file) && function_exists('readfile')) {
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// conditional GET
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$modifiedSince = '';
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if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
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$modifiedSince = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
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}
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$lastModified = gmdate('D, d M Y H:i:s', filemtime($file)) . ' GMT';
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// optional compression
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$compressed = false;
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$encoding = '';
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if (isset($_SERVER['HTTP_ACCEPT_ENCODING'])) {
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$acceptEncoding = $_SERVER['HTTP_ACCEPT_ENCODING'];
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if (extension_loaded('zlib') && function_exists('file_get_contents') && function_exists('file_put_contents')) {
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if (preg_match('/(?:^|, ?)(deflate)(?:,|$)/', $acceptEncoding, $matches)) {
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$encoding = 'deflate';
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$filegz = '../piwik.js.deflate';
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} else if (preg_match('/(?:^|, ?)((x-)?gzip)(?:,|$)/', $acceptEncoding, $matches)) {
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$encoding = $matches[1];
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$filegz = '../piwik.js.gz';
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}
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if (!empty($encoding)) {
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// compress-on-demand and use cache
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if(!file_exists($filegz) || (filemtime($file) > filemtime($filegz))) {
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$data = file_get_contents($file);
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if ($encoding == 'deflate') {
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$data = gzcompress($data, 9);
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} else if ($encoding == 'gzip' || $encoding == 'x-gzip') {
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$data = gzencode($data, 9);
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}
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file_put_contents($filegz, $data);
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$file = $filegz;
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}
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$compressed = true;
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$file = $filegz;
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}
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} else {
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// manually compressed
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$filegz = '../piwik.js.gz';
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if (preg_match('/(?:^|, ?)((x-)?gzip)(?:,|$)/', $acceptEncoding, $matches) && file_exists($filegz) && (filemtime($file) < filemtime($filegz))) {
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$encoding = $matches[1];
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$compressed = true;
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$file = $filegz;
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}
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}
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}
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// strip any trailing data appended to header
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if (false !== ($semicolon = strpos($modifiedSince, ';'))) {
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$modifiedSince = substr($modifiedSince, 0, $semicolon);
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}
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if ($modifiedSince == $lastModified) {
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header('HTTP/1.1 304 Not Modified');
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} else {
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header('Last-Modified: ' . $lastModified);
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header('Content-Length: ' . filesize($file));
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header('Content-Type: application/javascript; charset=UTF-8');
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if ($compressed) {
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header('Content-Encoding: ' . $encoding);
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}
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if (!readfile($file)) {
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header ('HTTP/1.0 505 Internal server error');
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}
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}
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} else {
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header ('HTTP/1.0 404 Not Found');
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}
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exit;
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