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960 lines
35 KiB
960 lines
35 KiB
<?php
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/*
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==============================================================================
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Dokeos - elearning and course management software
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Copyright (c) 2004-2005 Dokeos S.A.
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Copyright (c) 2003-2005 Ghent University (UGent)
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Copyright (c) 2001 Universite catholique de Louvain (UCL)
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Copyright (c) Hugues Peeters
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Copyright (c) Roan Embrechts (Vrije Universiteit Brussel)
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Copyright (c) Patrick Cool
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For a full list of contributors, see "credits.txt".
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The full license can be read in "license.txt".
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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See the GNU General Public License for more details.
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Contact address: Dokeos, 44 rue des palais, B-1030 Brussels, Belgium
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Mail: info@dokeos.com
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==============================================================================
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*/
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/**
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==============================================================================
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*
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* SCRIPT PURPOSE
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*
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* This script initializes and manages Dokeos session information. It
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* keeps available session information up to date.
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*
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* You can request a course id. It will check if the course Id requested is the
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* same as the current one. If it isn't it will update session information from
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* the database. You can also force the course reset if you want ($cidReset).
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*
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* All the course information is stored in the $_course array.
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*
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* You can request a group id. The script will check if the group id requested is the
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* same as the current one. If it isn't it will update session information from
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* the database. You can also force the course reset if you want ($gidReset).
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*
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The course id is stored in $_cid session variable.
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* The group id is stored in $_gid session variable.
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*
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*
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* VARIABLES AFFECTING THE SCRIPT BEHAVIOR
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*
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* string $login
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* string $password
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* boolean $logout
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*
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* string $cidReq : course id requested
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* boolean $cidReset : ask for a course Reset, if no $cidReq is provided in the
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* same time, all course informations is removed from the
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* current session
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*
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* int $gidReq : group Id requested
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* boolean $gidReset : ask for a group Reset, if no $gidReq is provided in the
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* same time, all group informations is removed from the
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* current session
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*
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*
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* VARIABLES SET AND RETURNED BY THE SCRIPT
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*
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* All the variables below are set and returned by this script.
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*
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* USER VARIABLES
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*
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* string $_user ['firstName' ]
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* string $_user ['lastName' ]
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* string $_user ['mail' ]
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* string $_user ['lastLogin' ]
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* string $_user ['official_code']
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* string $_user ['picture_uri' ]
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* string $_user['user_id']
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*
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* boolean $is_platformAdmin
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* boolean $is_allowedCreateCourse
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*
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* COURSE VARIABLES
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*
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* string $_cid (the course id)
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*
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* int $_course['id' ] - auto-assigned integer
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* string $_course['name' ] - the title of the course
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* string $_course['official_code'] - the visual / fake / official code
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* string $_course['sysCode' ]
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* string $_course['path' ]
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* string $_course['dbName' ]
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* string $_course['dbNameGlu' ]
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* string $_course['titular' ]
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* string $_course['language' ]
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* string $_course['extLink' ]['url' ]
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* string $_course['extLink' ]['name']
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* string $_course['categoryCode']
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* string $_course['categoryName']
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* boolean $is_courseMember
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* boolean $is_courseTutor
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* boolean $is_courseAdmin
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*
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*
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* GROUP VARIABLES
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*
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* int $_gid (the group id)
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*
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*
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* IMPORTANT ADVICE FOR DEVELOPERS
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*
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* We strongly encourage developers to use a connection layer at the top of
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* their scripts rather than use these variables, as they are, inside the core
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* of their scripts. It will make code maintenance much easier.
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*
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* Many if the functions you need you can already find in the
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* main_api.lib.php
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*
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* We encourage you to use functions to access these global "kernel" variables.
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* You can add them to e.g. the main API library.
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*
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*
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* SCRIPT STRUCTURE
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*
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* 1. The script determines if there is an authentication attempt. This part
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* only chek if the login name and password are valid. Afterwards, it set the
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* $_user['user_id'] (user id) and the $uidReset flag. Other user informations are retrieved
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* later. It's also in this section that optional external authentication
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* devices step in.
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*
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* 2. The script determines what other session informations have to be set or
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* reset, setting correctly $cidReset (for course) and $gidReset (for group).
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*
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* 3. If needed, the script retrieves the other user informations (first name,
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* last name, ...) and stores them in session.
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*
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* 4. If needed, the script retrieves the course information and stores them
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* in session
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*
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* 5. The script initializes the user permission status and permission for the
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* course level
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*
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* 6. If needed, the script retrieves group informations an store them in
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* session.
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*
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* 7. The script initializes the user status and permission for the group level.
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*
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* @package dokeos.include
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==============================================================================
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*/
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/*
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==============================================================================
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INIT SECTION
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variables should be initialised here
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==============================================================================
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*/
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// parameters passed via GET
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$logout = isset($_GET["logout"]) ? $_GET["logout"] : '';
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$gidReq = isset($_GET["gidReq"]) ? Database::escape_string($_GET["gidReq"]) : '';
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//this fixes some problems with generic functionalities like
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//My Agenda & What's New icons linking to courses
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// $cidReq can be set in the index.php file of a course-area
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$cidReq = isset($cidReq) ? Database::escape_string($cidReq) : '';
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// $cidReq can be set in URL-parameter
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$cidReq = isset($_GET["cidReq"]) ? Database::escape_string($_GET["cidReq"]) : $cidReq;
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$cidReset = isset($cidReset) ? Database::escape_string($cidReset) : '';
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// $cidReset can be set in URL-parameter
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$cidReset = isset($_GET["cidReq"])&&$_GET["cidReq"]!=$_SESSION['_cid'] ? Database::escape_string($_GET["cidReq"]) : $cidReset;
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$gidReset = isset($gidReset) ? $gidReset : '';
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// $gidReset can be set in URL-parameter
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// parameters passed via POST
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$login = isset($_POST["login"]) ? $_POST["login"] : '';
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// passed through other means
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//$cidReq -- passed from course folder index.php
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/*
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==============================================================================
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MAIN CODE
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==============================================================================
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*/
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if (!empty($_SESSION['_user']['user_id']) && ! ($login || $logout))
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{
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// uid is in session => login already done, continue with this value
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$_user['user_id'] = $_SESSION['_user']['user_id'];
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}
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else
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{
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unset($_user['user_id']); // uid not in session ? prevent any hacking
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if(isset($_POST['login']) && isset($_POST['password'])) // $login && $password are given to log in
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{
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$login = $_POST['login'];
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$password = $_POST['password'];
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//lookup the user in the main database
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$user_table = Database::get_main_table(TABLE_MAIN_USER);
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$sql = "SELECT user_id, username, password, auth_source, active, expiration_date
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FROM $user_table
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WHERE username = '".trim(addslashes($login))."'";
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$result = api_sql_query($sql,__FILE__,__LINE__);
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if (mysql_num_rows($result) > 0)
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{
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$uData = mysql_fetch_array($result);
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if ($uData['auth_source'] == PLATFORM_AUTH_SOURCE)
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{
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//the authentification of this user is managed by Dokeos itself
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$password = trim(stripslashes($password));
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// determine if the password needs to be encrypted before checking
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// $userPasswordCrypted is set in an external configuration file
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if ($userPasswordCrypted)
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{
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$password = md5($password);
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}
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// check the user's password
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if ($password == $uData['password'] AND (trim($login) == $uData['username']))
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{
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// check if the account is active (not locked)
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if ($uData['active']=='1')
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{
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// check if the expiration date has not been reached
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if ($uData['expiration_date']>date('Y-m-d H:i:s') OR $uData['expiration_date']=='0000-00-00 00:00:00')
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{
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$_user['user_id'] = $uData['user_id'];
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api_session_register('_user');
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if(!function_exists('event_login')){
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include(api_get_path(LIBRARY_PATH)."events.lib.inc.php");
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event_login();
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}
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}
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else
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{
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$loginFailed = true;
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api_session_unregister('_uid');
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header('Location: index.php?loginFailed=1&error=account_expired');
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exit;
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}
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}
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else
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{
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$loginFailed = true;
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api_session_unregister('_uid');
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header('Location: index.php?loginFailed=1&error=account_inactive');
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exit;
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}
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}
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else // login failed: username or password incorrect
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{
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$loginFailed = true;
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api_session_unregister('_uid');
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header('Location: index.php?loginFailed=1&error=user_password_incorrect');
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exit;
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}
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if (isset($uData['creator_id']) && $_user['user_id'] != $uData['creator_id'])
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{
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//first login for a not self registred
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//e.g. registered by a teacher
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//do nothing (code may be added later)
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}
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}
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elseif(!empty($extAuthSource[$uData['auth_source']]['login']) && file_exists($extAuthSource[$uData['auth_source']]['login']))
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{
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/*
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* Process external authentication
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* on the basis of the given login name
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*/
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$loginFailed = true; // Default initialisation. It could
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// change after the external authentication
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$key = $uData['auth_source']; //'ldap','shibboleth'...
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/* >>>>>>>> External authentication modules <<<<<<<<< */
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// see configuration.php to define these
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include_once($extAuthSource[$key]['login']);
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/* >>>>>>>> External authentication modules <<<<<<<<< */
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}
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else // no standard Dokeos login - try external authentification
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{
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//huh... nothing to do... we shouldn't get here
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error_log('Dokeos Authentication file '. $extAuthSource[$uData['auth_source']]['login']. ' could not be found - this might prevent your system from doing the corresponding authentication process',0);
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}
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if(!empty($_SESSION['request_uri']))
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{
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$req = $_SESSION['request_uri'];
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unset($_SESSION['request_uri']);
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header('location: '.$req);
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}
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else
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{
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header('location: '.api_get_path(WEB_PATH).api_get_setting('page_after_login').$param);
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}
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}
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else // login failed, mysql_num_rows($result) <= 0
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{
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$loginFailed = true; // Default initialisation. It could
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// change after the external authentication
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/*
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* In this section:
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* there is no entry for the $login user in the Dokeos
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* database. This also means there is no auth_source for the user.
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* We let all external procedures attempt to add him/her
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* to the system.
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*
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* Process external login on the basis
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* of the authentication source list
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* provided by the configuration settings.
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* If the login succeeds, for going further,
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* Dokeos needs the $_user['user_id'] variable to be
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* set and registered in the session. It's the
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* responsability of the external login script
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* to provide this $_user['user_id'].
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*/
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if (is_array($extAuthSource))
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{
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foreach($extAuthSource as $thisAuthSource)
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{
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if(!empty($thisAuthSource['newUser']) && file_exists($thisAuthSource['newUser']))
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{
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include_once($thisAuthSource['newUser']);
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}
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else
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{
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error_log('Dokeos Authentication file '. $thisAuthSource['newUser']. ' could not be found - this might prevent your system from using the authentication process in the user creation process',0);
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}
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}
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} //end if is_array($extAuthSource)
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} //end else login failed
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}
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elseif(api_get_setting('openid_authentication')=='true')
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{
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if(!empty($_POST['openid_url']))
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{
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include('main/auth/openid/login.php');
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openid_begin(trim($_POST['openid_url']),api_get_path(WEB_PATH).'index.php');
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//this last function should trigger a redirect, so we can die here safely
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die('Openid login redirection should be in progress');
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}
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elseif(!empty($_GET['openid_identity']))
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{ //it's usual for PHP to replace '.' (dot) by '_' (underscore) in URL parameters
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include('main/auth/openid/login.php');
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$res = openid_complete($_GET);
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if($res['status'] == 'success')
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{
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//lookup the user in the main database
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$user_table = Database::get_main_table(TABLE_MAIN_USER);
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$sql = "SELECT user_id, username, password, auth_source, active, expiration_date
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FROM $user_table
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WHERE openid = '".Database::escape_string($res['openid.identity'])."'";
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$result = api_sql_query($sql);
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if($result !== false)
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{
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if(Database::num_rows($result)>0)
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{
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//$row = Database::fetch_array($res);
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$uData = Database::fetch_array($result);
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if ($uData['auth_source'] == PLATFORM_AUTH_SOURCE)
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{
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//the authentification of this user is managed by Dokeos itself
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// check if the account is active (not locked)
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if ($uData['active']=='1')
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{
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// check if the expiration date has not been reached
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if ($uData['expiration_date']>date('Y-m-d H:i:s') OR $uData['expiration_date']=='0000-00-00 00:00:00')
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{
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$_user['user_id'] = $uData['user_id'];
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api_session_register('_user');
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if(!function_exists('event_login')){
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include(api_get_path(LIBRARY_PATH)."events.lib.inc.php");
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event_login();
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}
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}
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else
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{
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$loginFailed = true;
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api_session_unregister('_uid');
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header('Location: index.php?loginFailed=1&error=account_expired');
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exit;
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}
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}
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else
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{
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$loginFailed = true;
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api_session_unregister('_uid');
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header('Location: index.php?loginFailed=1&error=account_inactive');
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exit;
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}
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if (isset($uData['creator_id']) && $_user['user_id'] != $uData['creator_id'])
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{
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//first login for a not self registred
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//e.g. registered by a teacher
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//do nothing (code may be added later)
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}
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}
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}
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else
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{
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//Redirect to the subscription form
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header('Location: '.api_get_path(WEB_CODE_PATH).'auth/inscription.php?username='.$res['openid.sreg.nickname'].'&email='.$res['openid.sreg.email'].'&openid='.$res['openid.identity'].'&openid_msg=idnotfound');
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//$loginFailed = true;
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}
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}
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else
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{
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$loginFailed = true;
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}
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}
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else
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{
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$loginFailed = true;
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}
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}
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}
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// else {} => continue as anonymous user
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$uidReset = true;
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// $cidReset = true;
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// $gidReset = true;
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}
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//Now check for anonymous user mode
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if(isset($use_anonymous) && $use_anonymous == true)
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{
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//if anonymous mode is set, then try to set the current user as anonymous
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//if he doesn't have a login yet
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api_set_anonymous();
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}
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else
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{
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//if anonymous mode is not set, then check if this user is anonymous. If it
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//is, clean it from being anonymous (make him a nobody :-))
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api_clear_anonymous();
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}
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// if the requested course is different from the course in session
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if (!empty($cidReq) && (!isset($_SESSION['_cid']) or (isset($_SESSION['_cid']) && $cidReq != $_SESSION['_cid'])))
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{
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$cidReset = true;
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$gidReset = true; // As groups depend from courses, group id is reset
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}
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// if the requested group is different from the group in session
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if ($gidReq && $gidReq != $_SESSION['_gid'])
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{
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$gidReset = true;
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}
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//////////////////////////////////////////////////////////////////////////////
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// USER INIT
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//////////////////////////////////////////////////////////////////////////////
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if (isset($uidReset) && $uidReset) // session data refresh requested
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{
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$is_platformAdmin = false; $is_allowedCreateCourse = false;
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if (isset($_user['user_id']) && $_user['user_id']) // a uid is given (log in succeeded)
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{
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$user_table = Database::get_main_table(TABLE_MAIN_USER);
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$admin_table = Database::get_main_table(TABLE_MAIN_ADMIN);
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if ($_configuration['tracking_enabled'])
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{
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$sql = "SELECT `user`.*, `a`.`user_id` `is_admin`,
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UNIX_TIMESTAMP(`login`.`login_date`) `login_date`
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FROM $user_table
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LEFT JOIN $admin_table `a`
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ON `user`.`user_id` = `a`.`user_id`
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LEFT JOIN `".$_configuration['statistics_database']."`.`track_e_login` `login`
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ON `user`.`user_id` = `login`.`login_user_id`
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WHERE `user`.`user_id` = '".$_user['user_id']."'
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ORDER BY `login`.`login_date` DESC LIMIT 1";
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}
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else
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{
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$sql = "SELECT `user`.*, `a`.`user_id` `is_admin`
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FROM $user_table
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LEFT JOIN $admin_table `a`
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ON `user`.`user_id` = `a`.`user_id`
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WHERE `user`.`user_id` = '".$_user['user_id']."'";
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}
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|
|
$result = api_sql_query($sql,__FILE__,__LINE__);
|
|
|
|
if (mysql_num_rows($result) > 0)
|
|
{
|
|
// Extracting the user data
|
|
|
|
$uData = mysql_fetch_array($result);
|
|
|
|
$_user ['firstName'] = $uData ['firstname' ];
|
|
$_user ['lastName' ] = $uData ['lastname' ];
|
|
$_user ['mail' ] = $uData ['email' ];
|
|
$_user ['lastLogin'] = $uData ['login_date'];
|
|
$_user ['official_code'] = $uData ['official_code'];
|
|
$_user ['picture_uri'] = $uData ['picture_uri'];
|
|
$_user ['user_id'] = $uData ['user_id'];
|
|
$_user ['language'] = $uData ['language'];
|
|
$_user ['auth_source'] = $uData ['auth_source'];
|
|
|
|
$is_platformAdmin = (bool) (! is_null( $uData['is_admin']));
|
|
$is_allowedCreateCourse = (bool) ($uData ['status'] == 1);
|
|
|
|
api_session_register('_user');
|
|
}
|
|
else
|
|
{
|
|
header('location:'.api_get_path(WEB_PATH));
|
|
//exit("WARNING UNDEFINED UID !! ");
|
|
}
|
|
}
|
|
else // no uid => logout or Anonymous
|
|
{
|
|
api_session_unregister('_user');
|
|
api_session_unregister('_uid');
|
|
}
|
|
|
|
api_session_register('is_platformAdmin');
|
|
api_session_register('is_allowedCreateCourse');
|
|
}
|
|
else // continue with the previous values
|
|
{
|
|
$_user = $_SESSION['_user'];
|
|
$is_platformAdmin = $_SESSION['is_platformAdmin'];
|
|
$is_allowedCreateCourse = $_SESSION['is_allowedCreateCourse'];
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// COURSE INIT
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
if (isset($cidReset) && $cidReset) // course session data refresh requested or empty data
|
|
{
|
|
|
|
if ($cidReq)
|
|
{
|
|
$course_table = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$course_cat_table = Database::get_main_table(TABLE_MAIN_CATEGORY);
|
|
$sql = "SELECT `course`.*, `course_category`.`code` `faCode`, `course_category`.`name` `faName`
|
|
FROM $course_table
|
|
LEFT JOIN $course_cat_table
|
|
ON `course`.`category_code` = `course_category`.`code`
|
|
WHERE `course`.`code` = '$cidReq'";
|
|
|
|
$result = api_sql_query($sql,__FILE__,__LINE__);
|
|
|
|
if (mysql_num_rows($result)>0)
|
|
{
|
|
$cData = mysql_fetch_array($result);
|
|
|
|
$_cid = $cData['code' ];
|
|
$_course = array();
|
|
$_course['id' ] = $cData['code' ]; //auto-assigned integer
|
|
$_course['name' ] = $cData['title' ];
|
|
$_course['official_code'] = $cData['visual_code' ]; // use in echo
|
|
$_course['sysCode' ] = $cData['code' ]; // use as key in db
|
|
$_course['path' ] = $cData['directory' ]; // use as key in path
|
|
$_course['dbName' ] = $cData['db_name' ]; // use as key in db list
|
|
$_course['dbNameGlu' ] = $_configuration['table_prefix'] . $cData['db_name'] . $_configuration['db_glue']; // use in all queries
|
|
$_course['titular' ] = $cData['tutor_name' ];
|
|
$_course['language' ] = $cData['course_language' ];
|
|
$_course['extLink' ]['url' ] = $cData['department_url' ];
|
|
$_course['extLink' ]['name'] = $cData['department_name'];
|
|
$_course['categoryCode'] = $cData['faCode' ];
|
|
$_course['categoryName'] = $cData['faName' ];
|
|
|
|
$_course['visibility' ] = $cData['visibility'];
|
|
$_course['subscribe_allowed'] = $cData['subscribe'];
|
|
$_course['unubscribe_allowed'] = $cData['unsubscribe'];
|
|
|
|
api_session_register('_cid');
|
|
api_session_register('_course');
|
|
|
|
if($_configuration['tracking_enabled'] && !isset($_SESSION['login_as']))
|
|
{
|
|
//We add a new record in the course tracking table
|
|
$course_tracking_table = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
|
|
|
|
$sql="INSERT INTO $course_tracking_table(course_code, user_id, login_course_date, logout_course_date, counter)" .
|
|
"VALUES('".$_course['official_code']."', '".$_user['user_id']."', NOW(), NOW(), '1')";
|
|
|
|
api_sql_query($sql,__FILE__,__LINE__);
|
|
}
|
|
|
|
|
|
|
|
// if a session id has been given in url, we store the session
|
|
if(api_get_setting('use_session_mode')=='true')
|
|
{
|
|
// Database Table Definitions
|
|
$tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
|
|
$tbl_user = Database::get_main_table(TABLE_MAIN_USER);
|
|
$tbl_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
|
|
$tbl_session_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
|
|
|
|
if(!empty($_GET['id_session']))
|
|
{
|
|
$_SESSION['id_session'] = Database::escape_string($_GET['id_session']);
|
|
$sql = 'SELECT name FROM '.$tbl_session . ' WHERE id="'.$_SESSION['id_session'] . '"';
|
|
$rs = api_sql_query($sql,__FILE__,__LINE__);
|
|
list($_SESSION['session_name']) = mysql_fetch_array($rs);
|
|
}
|
|
else
|
|
{
|
|
api_session_unregister('session_name');
|
|
api_session_unregister('id_session');
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
//exit("WARNING UNDEFINED CID !! ");
|
|
header('location:'.api_get_path(WEB_PATH));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
api_session_unregister('_cid');
|
|
api_session_unregister('_course');
|
|
|
|
}
|
|
}
|
|
else // continue with the previous values
|
|
{
|
|
if(empty($_SESSION['_course']) OR empty($_SESSION['_cid']))
|
|
{ //no previous values...
|
|
$_cid = -1; //set default values that will be caracteristic of being unset
|
|
$_course = -1;
|
|
}
|
|
else
|
|
{
|
|
$_cid = $_SESSION['_cid' ];
|
|
$_course = $_SESSION['_course'];
|
|
|
|
// these lines are usefull for tracking. Indeed we can have lost the id_session and not the cid.
|
|
// Moreover, if we want to track a course with another session it can be usefull
|
|
if(!empty($_GET['id_session']))
|
|
{
|
|
$tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
|
|
$_SESSION['id_session'] = Database::escape_string($_GET['id_session']);
|
|
$sql = 'SELECT name FROM '.$tbl_session . ' WHERE id="'.$_SESSION['id_session'] . '"';
|
|
$rs = api_sql_query($sql,__FILE__,__LINE__);
|
|
list($_SESSION['session_name']) = mysql_fetch_array($rs);
|
|
}
|
|
|
|
if($_configuration['tracking_enabled'] && !isset($_SESSION['login_as']))
|
|
{
|
|
$course_tracking_table = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
|
|
|
|
//We select the last record for the current course in the course tracking table
|
|
$sql="SELECT course_access_id FROM $course_tracking_table WHERE user_id=".intval($_user ['user_id'])." ORDER BY login_course_date DESC LIMIT 0,1";
|
|
$result=api_sql_query($sql,__FILE__,__LINE__);
|
|
if(Database::num_rows($result)>0)
|
|
{
|
|
$i_course_access_id = mysql_result($result,0,0);
|
|
|
|
//We update the course tracking table
|
|
$sql="UPDATE $course_tracking_table " .
|
|
"SET logout_course_date = NOW(), " .
|
|
"counter = counter+1 " .
|
|
"WHERE course_access_id=".intval($i_course_access_id);
|
|
|
|
api_sql_query($sql,__FILE__,__LINE__);
|
|
}
|
|
else
|
|
{
|
|
$sql="INSERT INTO $course_tracking_table(course_code, user_id, login_course_date, logout_course_date, counter)" .
|
|
"VALUES('".$_course['official_code']."', '".$_user['user_id']."', NOW(), NOW(), '1')";
|
|
api_sql_query($sql,__FILE__,__LINE__);
|
|
}
|
|
}
|
|
|
|
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// COURSE / USER REL. INIT
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
if ((isset($uidReset) && $uidReset) || (isset($cidReset) && $cidReset)) // session data refresh requested
|
|
{
|
|
if (isset($_user['user_id']) && $_user['user_id'] && isset($_cid) && $_cid) // have keys to search data
|
|
{
|
|
|
|
if(api_get_setting('use_session_mode') != 'true')
|
|
{
|
|
|
|
$course_user_table = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$sql = "SELECT * FROM $course_user_table
|
|
WHERE `user_id` = '".$_user['user_id']."'
|
|
AND `course_code` = '$cidReq'";
|
|
|
|
$result = api_sql_query($sql,__FILE__,__LINE__);
|
|
|
|
if (mysql_num_rows($result) > 0) // this user have a recorded state for this course
|
|
{
|
|
$cuData = mysql_fetch_array($result);
|
|
|
|
$is_courseMember = true;
|
|
$is_courseTutor = (bool) ($cuData['tutor_id' ] == 1 );
|
|
$is_courseAdmin = (bool) ($cuData['status'] == 1 );
|
|
|
|
api_session_register('_courseUser');
|
|
}
|
|
else // this user has no status related to this course
|
|
{
|
|
$is_courseMember = false;
|
|
$is_courseAdmin = false;
|
|
$is_courseTutor = false;
|
|
}
|
|
|
|
$is_courseAdmin = (bool) ($is_courseAdmin || $is_platformAdmin);
|
|
|
|
}
|
|
|
|
else
|
|
{
|
|
|
|
$tbl_course_user = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
|
|
|
|
$sql = "SELECT * FROM ".$tbl_course_user."
|
|
WHERE `user_id` = '".$_user['user_id']."'
|
|
AND `course_code` = '$cidReq'";
|
|
|
|
$result = api_sql_query($sql,__FILE__,__LINE__);
|
|
|
|
if (mysql_num_rows($result) > 0) // this user have a recorded state for this course
|
|
{
|
|
$cuData = mysql_fetch_array($result);
|
|
|
|
$_courseUser['role'] = $cuData['role' ];
|
|
$is_courseMember = true;
|
|
$is_courseTutor = (bool) ($cuData['tutor_id' ] == 1 );
|
|
$is_courseAdmin = (bool) ($cuData['status'] == 1 );
|
|
|
|
api_session_register('_courseUser');
|
|
}
|
|
if (!$is_courseAdmin) // this user has no status related to this course
|
|
{
|
|
// is it the session coach ?
|
|
|
|
$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
|
|
$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
|
|
$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
|
|
|
|
$sql = "SELECT 1
|
|
FROM ".$tbl_session."
|
|
INNER JOIN ".$tbl_session_course."
|
|
ON session_rel_course.id_session = session.id
|
|
AND session_rel_course.course_code='$_cid'
|
|
WHERE session.id_coach = '".$_user['user_id']."'";
|
|
|
|
$result = api_sql_query($sql,__FILE__,__LINE__);
|
|
if($row = mysql_fetch_array($result)){
|
|
$_courseUser['role'] = 'Professor';
|
|
$is_courseMember = true;
|
|
$is_courseTutor = true;
|
|
$is_courseAdmin = false;
|
|
$is_courseCoach = true;
|
|
|
|
api_session_register('_courseUser');
|
|
}
|
|
else
|
|
{
|
|
// Check if the current user is the course coach
|
|
$sql = "SELECT 1
|
|
FROM ".$tbl_session_course."
|
|
WHERE session_rel_course.course_code='$_cid'
|
|
AND session_rel_course.id_coach = '".$_user['user_id']."'";
|
|
$result = api_sql_query($sql,__FILE__,__LINE__);
|
|
if($row = mysql_fetch_array($result))
|
|
{
|
|
$_courseUser['role'] = 'Professor';
|
|
$is_courseMember = true;
|
|
$is_courseTutor = true;
|
|
$is_courseCoach = true;
|
|
|
|
$tbl_user = Database :: get_main_table(TABLE_MAIN_USER);
|
|
|
|
$sql="SELECT status FROM ".$tbl_user." WHERE user_id = ".$_user['user_id']."";
|
|
|
|
$result=api_sql_query($sql);
|
|
if(mysql_result($result,0,0)==1){
|
|
$is_courseAdmin = true;
|
|
}
|
|
else{
|
|
$is_courseAdmin = false;
|
|
}
|
|
|
|
api_session_register('_courseUser');
|
|
}
|
|
else
|
|
{
|
|
// Check if the user is a student is this session
|
|
$sql = "SELECT * FROM ".$tbl_session_course_user."
|
|
WHERE `id_user` = '".$_user['user_id']."'
|
|
AND `course_code` = '$cidReq'";
|
|
|
|
$result = api_sql_query($sql,__FILE__,__LINE__);
|
|
|
|
if (mysql_num_rows($result) > 0) // this user have a recorded state for this course
|
|
{
|
|
while($row = mysql_fetch_array($result)){
|
|
$is_courseMember = true;
|
|
$is_courseTutor = false;
|
|
$is_courseAdmin = false;
|
|
|
|
api_session_register('_courseUser');
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else // keys missing => not anymore in the course - user relation
|
|
{
|
|
//// course
|
|
$is_courseMember = false;
|
|
$is_courseAdmin = false;
|
|
$is_courseTutor = false;
|
|
$is_courseCoach = false;
|
|
|
|
api_session_unregister('_courseUser');
|
|
}
|
|
|
|
//DEPRECATED
|
|
//$is_courseAllowed=($_cid && ($_course['visibility'] || $is_courseMember || $is_platformAdmin))?true:false;
|
|
|
|
//NEW
|
|
if (isset($_course))
|
|
{
|
|
if ($_course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)
|
|
$is_allowed_in_course = true;
|
|
elseif ($_course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM && isset($_user['user_id']) )
|
|
$is_allowed_in_course = true;
|
|
elseif ($_course['visibility'] == COURSE_VISIBILITY_REGISTERED && ($is_platformAdmin || $is_courseMember))
|
|
$is_allowed_in_course = true;
|
|
elseif ($_course['visibility'] == COURSE_VISIBILITY_CLOSED && ($is_platformAdmin || $is_courseAdmin))
|
|
$is_allowed_in_course = true;
|
|
else $is_allowed_in_course = false;
|
|
}
|
|
|
|
// save the states
|
|
|
|
api_session_register('is_courseMember');
|
|
api_session_register('is_courseAdmin');
|
|
//api_session_register('is_courseAllowed'); //deprecated old permission var
|
|
api_session_register('is_courseTutor');
|
|
api_session_register('is_allowed_in_course'); //new permission var
|
|
api_session_register('is_courseCoach');
|
|
}
|
|
else // continue with the previous values
|
|
{
|
|
$_courseUser = $_SESSION ['_courseUser' ];
|
|
$is_courseMember = $_SESSION ['is_courseMember' ];
|
|
$is_courseAdmin = $_SESSION ['is_courseAdmin' ];
|
|
//$is_courseAllowed = $_SESSION ['is_courseAllowed']; //deprecated
|
|
$is_allowed_in_course = $_SESSION ['is_allowed_in_course'];
|
|
$is_courseTutor = $_SESSION ['is_courseTutor' ];
|
|
$is_courseCoach = $_SESSION ['is_courseCoach' ];
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// GROUP INIT
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
if ((isset($gidReset) && $gidReset) || (isset($cidReset) && $cidReset)) // session data refresh requested
|
|
{
|
|
if ($gidReq && $_cid ) // have keys to search data
|
|
{
|
|
$group_table = Database::get_course_table(TABLE_GROUP);
|
|
$sql = "SELECT * FROM $group_table WHERE `id` = '$gidReq'";
|
|
$result = api_sql_query($sql,__FILE__,__LINE__);
|
|
if (mysql_num_rows($result) > 0) // This group has recorded status related to this course
|
|
{
|
|
$gpData = mysql_fetch_array($result);
|
|
$_gid = $gpData ['id' ];
|
|
api_session_register('_gid');
|
|
}
|
|
else
|
|
{
|
|
exit("WARNING UNDEFINED GID !! ");
|
|
}
|
|
}
|
|
elseif(isset($_SESSION['_gid']) or isset($_gid)) // Keys missing => not anymore in the group - course relation
|
|
{
|
|
api_session_unregister('_gid');
|
|
}
|
|
}
|
|
elseif(isset($_SESSION['_gid'])) // continue with the previous values
|
|
{
|
|
$_gid = $_SESSION ['_gid' ];
|
|
}
|
|
else
|
|
{ //if no previous value, assign caracteristic undefined value
|
|
$_gid = -1;
|
|
}
|
|
//set variable according to student_view_enabled choices
|
|
if (api_get_setting('student_view_enabled') == "true")
|
|
{
|
|
if ($_GET['isStudentView'] == 'true' and !empty($_SESSION['studentview']))
|
|
{
|
|
// switching to studentview
|
|
$_SESSION['studentview'] = 'studentview';
|
|
}
|
|
elseif ($_GET['isStudentView'] == 'false' and !empty($_SESSION['studentview']))
|
|
{
|
|
//switching to teacherview
|
|
$_SESSION['studentview'] = 'teacherview';
|
|
}
|
|
elseif (!empty($_SESSION['studentview']))
|
|
{
|
|
//all is fine, no change to that, obviously
|
|
}
|
|
elseif (empty($_SESSION['studentview']))
|
|
{
|
|
// We are in teacherview here
|
|
$_SESSION['studentview'] = 'teacherview';
|
|
}
|
|
}
|
|
|
|
if(isset($_cid))
|
|
{
|
|
$tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
$sql="UPDATE $tbl_course SET last_visit=NOW() WHERE code='$_cid'";
|
|
api_sql_query($sql,__FILE__,__LINE__);
|
|
} |