Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/exercise/Hpdownload.php

148 lines
4.3 KiB

<?php
/* For licensing terms, see /license.txt */
/**
* This script shows the list of exercises for administrators and students.
*
* @package chamilo.exercise
*
* @author Istvan Mandak
*
* @version $Id: Hpdownload.php 22201 2009-07-17 19:57:03Z cfasanando $
*/
session_cache_limiter('public');
require_once __DIR__.'/../inc/global.inc.php';
$this_section = SECTION_COURSES;
$tbl_document = Database::get_course_table(TABLE_DOCUMENT);
$doc_url = str_replace(['../', '\\..', '\\0', '..\\'], ['', '', '', ''], urldecode($_GET['doc_url']));
$filename = basename($doc_url);
// launch event
//Event::event_download($doc_url);
if (isset($_course['path'])) {
$course_path = api_get_path(SYS_COURSE_PATH).$_course['path'].'/document';
$full_file_name = $course_path.Security::remove_XSS($doc_url);
} else {
$course_path = api_get_path(SYS_COURSE_PATH).$cid.'/document';
$full_file_name = $course_path.Security::remove_XSS($doc_url);
}
if (!is_file($full_file_name)) {
exit;
}
if (!Security::check_abs_path($full_file_name, $course_path.'/')) {
exit;
}
$extension = explode('.', $filename);
$extension = strtolower($extension[sizeof($extension) - 1]);
switch ($extension) {
case 'gz':
$content_type = 'application/x-gzip';
break;
case 'zip':
$content_type = 'application/zip';
break;
case 'pdf':
$content_type = 'application/pdf';
break;
case 'png':
$content_type = 'image/png';
break;
case 'gif':
$content_type = 'image/gif';
break;
case 'jpg':
$content_type = 'image/jpeg';
break;
case 'txt':
$content_type = 'text/plain';
break;
case 'htm':
$content_type = 'text/html';
break;
case 'html':
$content_type = 'text/html';
break;
default:
$content_type = 'application/octet-stream';
break;
}
header('Content-disposition: filename='.$filename);
header('Content-Type: '.$content_type);
header('Expires: '.gmdate('D, d M Y H:i:s', time() + 10).' GMT');
header('Last-Modified: '.gmdate('D, d M Y H:i:s', time() + 10).' GMT');
/*
Dynamic parsing section
is activated whenever a user views an html file
work in progress
- question: we could also parse per line,
perhaps this would be faster.
($file_content = file($full_file_name) returns file in array)
*/
if ($content_type == 'text/html') {
$directory_name = dirname($full_file_name);
$coursePath = api_get_path(SYS_COURSE_PATH);
$dir = str_replace(['\\', $coursePath.$_course['path'].'/document'], ['/', ''], $directory_name);
if ($dir[strlen($dir) - 1] != '/') {
$dir .= '/';
}
//Parse whole file at one
$fp = fopen($full_file_name, "r");
$file_content = fread($fp, filesize($full_file_name));
fclose($fp);
$exercisePath = api_get_self();
$exfile = explode('/', $exercisePath);
$exfile = $exfile[sizeof($exfile) - 1];
$exercisePath = substr($exercisePath, 0, strpos($exercisePath, $exfile));
$content = $file_content;
$mit = "function Finish(){";
$js_content = "var SaveScoreVariable = 0; // This variable included by Dokeos System\n".
"function mySaveScore() // This function included by Dokeos System\n".
"{\n".
" if (SaveScoreVariable==0)\n".
" {\n".
" SaveScoreVariable = 1;\n".
" if (C.ie)\n".
" {\n".
" document.location.href = \"".$exercisePath."savescores.php?origin=$origin&time=$time&test=".$doc_url."&uid=".$_user['user_id']."&cid=".$cid."&score=\"+Score;\n".
" //window.alert(Score);\n".
" }\n".
" else\n".
" {\n".
" }\n".
" }\n".
"}\n".
"// Must be included \n".
"function Finish(){\n".
" mySaveScore();";
$newcontent = str_replace($mit, $js_content, $content);
$prehref = "javascript:void(0);";
$posthref = api_get_path(WEB_CODE_PATH)."main/exercise/Hpdownload.php?doc_url=".$doc_url."&cid=".$cid."&uid=".$uid;
$newcontent = str_replace($prehref, $posthref, $newcontent);
$prehref = "class=\"GridNum\" onclick=";
$posthref = "class=\"GridNum\" onMouseover=";
$newcontent = str_replace($prehref, $posthref, $newcontent);
header('Content-length: '.strlen($newcontent));
// Dipsp.
echo $newcontent;
exit();
}
//normal case, all non-html files
//header('Content-length: ' . filesize($full_file_name));
$fp = fopen($full_file_name, 'rb');
fpassthru($fp);
fclose($fp);