<?php // $id: $
/*
----------------------------------------------------------------------
Dokeos - elearning and course management software
Copyright (c) 2004 Dokeos S.A.
Copyright (c) Denes Nagy (darkden@freemail.hu)
For a full list of contributors, see "credits.txt".
The full license can be read in "license.txt".
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 the GNU General Public License for more details.
Contact: Dokeos, 181 rue Royale, B-1000 Brussels, Belgium, info@dokeos.com
----------------------------------------------------------------------
*/
/**
==============================================================================
* @package dokeos.scorm
* Opens a scorm lesson
==============================================================================
*/
//Maritime :if you open the first, done it, then the second, then the first and not done it and then the second, then //your access is denied (the scos behave this way) !!
//error_log($_SERVER['REQUEST_URI'],0);
$langFile = "scorm";
include('../inc/global.inc.php');
$this_section=SECTION_COURSES;
include('XMLencode.php');
$charset = GetXMLEncode($_GET['file']);
header('Content-Type: text/html; charset='. $charset);
//error_log("Opensco start... s_identifier is now:".$_SESSION['s_identifier']." and old s_identifier is now:".$_SESSION['old_sco_identifier'],0);
//$TBL_SCORM_SCO_DATA=$scormDbName."`.`scorm_sco_data";
$TBL_SCORM_SCO_DATA = Database::get_scorm_sco_data_table();
$sco_href = base64_decode($_GET['sco_href']);
$sco_identifier = $_GET['sco_identifier'];
$file = $_GET['file'];
$edoceo = $_GET['edoceo'];
$items = $_SESSION['items'];
$contentId = $_SESSION['contentId'];
$openDir = $_REQUEST['openDir'];
//prepare those variables for scormfunctions.php
$_SESSION['file']=$file;
$charset_lang = 'ISO-8859-15';
/*
* Small utility function to position the menu on a sensible item (several elements before the current one)
* @param string sco_id of the target element
* @param array reference to the items array
* @param array reference to the sco_id inverse-index array
* @param integer Optional number of elements we want before the selected element
* @return string sco_id (and HTML anchor ID) of the element to which the menu should point
* @author Yannick Warnier < yannick.warnier @ dokeos . com >
*
function get_better_anchor_target($my_id, & $my_items, & $my_items_dictionary, $num = 6){
$k = $my_items_dictionary[$my_id];
if( ( $k< $num ) || (!is_array($my_items[$k-$num]))){
return $my_items[1]['identifier'];
}else{
return $my_items[$k-$num]['identifier'];
}
return $my_items[1]['identifier'];
}
Function apparently useless to call from here
*/
if(!is_array($items)){
//error_log('$items is not an array!!!',0);
}
//the problem is that it is not sure that the closesco.php is called, maybe not, the user can click to any other sco
//without finishing the current one, that is why that this code looks ugly
/*======================================
SEARCHING FOR PREREQUISITIES OF COURSE
======================================*/
//$i=0;
$i=$_SESSION['items_dictionary'][$sco_identifier];
//do {
// $i++;
//} while (($items[$i]['identifier'] != $sco_identifier) and ($i < = count($items)));
//while goes on if it is true, it stops at false
//we search the prerequisites of the current course (now only working for scorm 1.2 ; scorm 1.3 use another method)
$prereq=$items[$i]['prereq'];
$title=$items[$i]['title'];
//$i=0;
$i=$_SESSION['items_dictionary'][$prereq];
//do {
// $i++;
//} while (($items[$i]['identifier'] != $prereq) and ($i < = count($items)));
$prereqtitle=$items[$i]['title'];
if ($prereq != '') {
$result = api_sql_query("SELECT status FROM $TBL_SCORM_SCO_DATA
WHERE (scoIdentifier='$prereq' and studentId='".$_user['user_id']."' and contentId='$contentId')",__FILE__,__LINE__);
//echo "SELECT status FROM `$TBL_SCORM_SCO_DATA` WHERE (scoIdentifier='$prereq' and studentId='".$_user['user_id']."' and contentId='$contentId')";
$ar=mysql_fetch_array($result);
$status=$ar['status'];
if ($status=='completed' or $status='passed') { $openpage=true; } else { $openpage=false; }
} else {
$openpage=true;
}
/*==============================
OPENING THE PAGE IF ACCESSIBLE
==============================*/
if ($openpage) {
api_session_unregister('s_href');
//api_session_unregister('s_identifier');
//unset($_SESSION['s_identifier']);
//If the user clicked on an item directly in the menu, then we didn't pass through
//content.php, and consequently $_SESSION['s_identifier'] has not been renewed.
//It is important to reset $_SESSION['s_identifier'] and $_SESSION['old_sco_identifier']
//before loading scormfunctions.php, which will use them to call closesco.php
if($sco_identifier != $_SESSION['s_identifier']){
$_SESSION['s_identifier'] = $sco_identifier;
$_SESSION['old_sco_identifier'] = $sco_identifier;
}
$s_href=$sco_href;
//$_SESSION['s_identifier']=$sco_identifier;
//check that file actually exists on this system (or if it doesn't start with the domain name
// of this system, leave it to the risk of generating a crappy apache list page - we cannot be sure)
$my_href = str_replace(api_get_path(WEB_PATH),api_get_path(SYS_PATH),$sco_href);
if(($my_href == $sco_href) or (is_file(preg_replace('/(.*)\?.*/','$1',$my_href)))){
//ok
}else{
$sco_href = 'blank.php';
}
api_session_register('s_href');
//api_session_register('s_identifier');
$pos=strpos($sco_href,'http:',5); //in case of external sco_hrefs, we cut the Dokoes-related part off
if ($pos === false) {
} else {
$sco_href=substr($sco_href,$pos);
}
echo "< html > < head > < link rel = 'stylesheet' type = 'text/css' href = '../css/scorm.css' > < / head > < body > ",
"< script type = 'text/javascript' > \ n / * < ! [ C D A T A [ * / \ n " ;
//ok that the session has the s_href and the s_identifier but the scormfunction.php ran before this and
//these new variables are not written in the hidden scormfunction.php in the hidden frame, so we must
//refresh it in order to be able to use these variables ! here is the refresh :
if ($edoceo=="no") {
echo
"apiwindow=open('scormfunctions.php','API');",
"api1484window=open('scormfunctions.php','API_1484_11');";
}
//$target_identifier = get_better_anchor_target($sco_identifier, $_SESSION['items'], $_SESSION['items_dictionary'],6);
echo
"zwindow=open('$sco_href','sco');",
"cwindow=open('contents.php?file=$file&edoceo=$edoceo&openDir=$openDir','contents'); ",
// "parent.load.document.location=parent.load.document.location;",
"\n/* ]]> */\n< / script > ",
"< div class = 'message' > < font color = 'black' > $title< / font > < / div > < / body > < / html > ";
//error_log("Opensco ending... s_identifier is now:".$_SESSION['s_identifier']." and old s_identifier is now:".$_SESSION['old_sco_identifier'],0);
} else {
//ugly patch with htmlentities here for the accentuated characters bug. See contents.php for a tip on how
// to improve this.
echo "< html > < head > < link rel = 'stylesheet' type = 'text/css' href = '../css/scorm.css' > < / head > < body > ",
"< div class = 'message_thin' > ".htmlentities(get_lang('ScormToEnter'),ENT_QUOTES,$charset_lang)
." < b > $title< / b > ".htmlentities(get_lang('ScormFirstNeedTo'),ENT_QUOTES,$charset_lang)
." < b > $prereqtitle< / b > < / div > .< / body > < / html > ";
//error_log("Opensco ending (prereqs)... s_identifier is now:".$_SESSION['s_identifier']." and old s_identifier is now:".$_SESSION['old_sco_identifier'],0);
}
?>
