File Source for Hpdownload.php

<?php
/*
DOKEOS - elearning and course management software
For a full list of contributors, see documentation/credits.html
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
See "documentation/licence.html" more details.
Contact:
Dokeos
Rue des Palais 44 Paleizenstraat
B-1030 Brussels - Belgium
Tel. +32 (2) 211 34 56
*/
/**
* This script shows the list of exercises for administrators and students.
* @package dokeos.exercise
* @author Istvan Mandak
* @version $Id: Hpdownload.php 12269 2007-05-03 14:17:37Z elixir_julian $
*/
session_cache_limiter('public');
include('../inc/global.inc.php');
$this_section=SECTION_COURSES;
include(api_get_path(LIBRARY_PATH)."events.lib.inc.php");
$tbl_document = Database::get_course_table(TABLE_DOCUMENT);
$doc_url=urldecode($_GET['doc_url']);
$filename=basename($doc_url);
// launch event
//event_download($doc_url);
if (isset($_course['path']))
{
// $full_file_name=$_configuration['root_sys']."courses/".$_course['path'].'/document'.$doc_url;
$full_file_name = api_get_path(SYS_COURSE_PATH).$_course['path'].'/document'.$doc_url;
}
else
{
//$full_file_name=$_configuration['root_sys']."courses/".$cid.'/document'.$doc_url;
$full_file_name = api_get_path(SYS_COURSE_PATH).$cid.'/document'.$doc_url;
}
if(!is_file($full_file_name))
{
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')
{
include (api_get_path(LIBRARY_PATH).'fileUpload.lib.php');
$directory_name = dirname($full_file_name);
$dir=str_replace(array('\\',$_configuration['root_sys']."courses/".$_course['path'].'/document'),array('/',''),$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);
//$file_content = api_replace_parameter($dir, $file_content, "src");
//$file_content = api_replace_parameter($dir, $file_content, "href");
/*
//parse line per line
$file_content_array = file($full_file_name);
foreach($file_content_array as $line)
{
$line = api_replace_parameter($dir, $line, "src");
$line = api_replace_parameter($dir, $line, "href");
$file_content .= $line;
}
*/
$exercicePath = api_get_self();
$exfile = explode('/',$exercicePath);
$exfile = $exfile[sizeof($exfile)-1];
$exercicePath = substr($exercicePath,0,strpos($exercicePath,$exfile));
$exercicePath = $exercicePath;
$content = $file_content;
$mit = "function Finish(){";
$js_content = "var SaveScoreVariable = 0; // This variable included by Dokeos System\n".
"function mySaveScore() // This function included by Dokeos System\n".
"{\n".
" if (SaveScoreVariable==0)\n".
" {\n".
" SaveScoreVariable = 1;\n".
" if (C.ie)\n".
" {\n".
" document.location.href = \"".$exercicePath."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);";
$posthref=$_configuration['root_web']."main/exercice/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);
?>

Source for file Hpdownload.php