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1114 lines
45 KiB
1114 lines
45 KiB
<?php
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/* For licensing terms, see /license.txt */
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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 Chamilo 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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* see the function get_course_info_with_category
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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 chamilo.include
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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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//require_once api_get_path(LIBRARY_PATH).'conditionallogin.lib.php'; moved to autologin
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// verified if exists the username and password in session current
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use \ChamiloSession as Session;
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//Conditional login
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if (isset($_SESSION['conditional_login']['uid']) && $_SESSION['conditional_login']['can_login']=== true){
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$uData = UserManager::get_user_info_by_id($_SESSION['conditional_login']['uid']);
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ConditionalLogin::check_conditions($uData);
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$_user['user_id'] = $_SESSION['conditional_login']['uid'];
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$_user['status'] = $uData['status'];
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Session::write('_user',$_user);
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Session::erase('conditional_login');
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$uidReset=true;
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event_login();
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}
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// parameters passed via GET
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$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($_GET['cidReq']) && ((isset($_SESSION['_cid']) && $_GET['cidReq']!=$_SESSION['_cid']) || (!isset($_SESSION['_cid'])))) ? Database::escape_string($_GET["cidReq"]) : $cidReset;
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// $cDir is a special url param sent by courses/.htaccess
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$cDir = (!empty($_GET['cDir']) ? $_GET['cDir'] : null);
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$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"]) ? $_POST["login"] : '';
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/* MAIN CODE */
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if (!empty($_SESSION['_user']['user_id']) && ! ($login || $logout)) {
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// uid is in session => login already done, continue with this value
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$_user['user_id'] = $_SESSION['_user']['user_id'];
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//Check if we have to reset user data
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//This param can be used to reload user data if user has been logged by external script
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if (isset($_SESSION['_user']['uidReset']) && $_SESSION['_user']['uidReset']){
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$uidReset=true;
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}
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} else {
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if (isset($_user['user_id'])) {
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unset($_user['user_id']);
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}
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//Platform legal terms and conditions
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if (api_get_setting('allow_terms_conditions') == 'true') {
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if (isset($_POST['login']) && isset($_POST['password']) && isset($_SESSION['term_and_condition']['user_id'])) {
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$user_id = $_SESSION['term_and_condition']['user_id']; // user id
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// Update the terms & conditions
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$legal_type = null;
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//verify type of terms and conditions
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if (isset($_POST['legal_info'])) {
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$info_legal = explode(':', $_POST['legal_info']);
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$legal_type = LegalManager::get_type_of_terms_and_conditions($info_legal[0], $info_legal[1]);
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}
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//is necessary verify check
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if ($legal_type == 1) {
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if ((isset($_POST['legal_accept']) && $_POST['legal_accept']=='1')) {
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$legal_option = true;
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} else {
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$legal_option = false;
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}
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}
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//no is check option
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if ($legal_type == 0) {
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$legal_option=true;
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}
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if (isset($_POST['legal_accept_type']) && $legal_option===true) {
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$cond_array = explode(':',$_POST['legal_accept_type']);
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if (!empty($cond_array[0]) && !empty($cond_array[1])){
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$time = time();
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$condition_to_save = intval($cond_array[0]).':'.intval($cond_array[1]).':'.$time;
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UserManager::update_extra_field_value($user_id,'legal_accept',$condition_to_save);
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}
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}
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}
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}
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//IF cas is activated and user isn't logged in
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if (api_get_setting('cas_activate') == 'true') {
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$cas_activated = true;
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} else {
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$cas_activated = false;
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}
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$cas_login=false;
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if ($cas_activated AND !isset($_user['user_id']) and !isset($_POST['login']) && !$logout) {
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require_once(api_get_path(SYS_PATH).'main/auth/cas/authcas.php');
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$cas_login = cas_is_authenticated();
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}
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if ( ( isset($_POST['login']) AND isset($_POST['password']) ) OR ($cas_login) ) {
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// $login && $password are given to log in
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if ( $cas_login && empty($_POST['login']) ) {
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$login = $cas_login;
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} else {
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$login = $_POST['login'];
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$password = $_POST['password'];
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}
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//Lookup the user in the main database
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$user_table = Database::get_main_table(TABLE_MAIN_USER);
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$sql = "SELECT user_id, username, password, auth_source, active, expiration_date, status FROM $user_table
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WHERE username = '".Database::escape_string($login)."'";
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$result = Database::query($sql);
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if (Database::num_rows($result) > 0) {
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$uData = Database::fetch_array($result);
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if ($uData['auth_source'] == PLATFORM_AUTH_SOURCE || $uData['auth_source'] == CAS_AUTH_SOURCE) {
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//The authentification of this user is managed by Chamilo itself
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$password = api_get_encrypted_password(trim(stripslashes($password)));
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// Check the user's password
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if ( ($password == $uData['password'] OR $cas_login) AND (trim($login) == $uData['username'])) {
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$update_type = UserManager::get_extra_user_data_by_field($uData['user_id'], 'update_type');
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$update_type= $update_type['update_type'];
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if (!empty($extAuthSource[$update_type]['updateUser']) && file_exists($extAuthSource[$update_type]['updateUser'])) {
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include_once $extAuthSource[$update_type]['updateUser'];
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}
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// Check if the account is active (not locked)
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if ($uData['active'] == '1') {
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// Check if the expiration date has not been reached
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if ($uData['expiration_date'] > date('Y-m-d H:i:s') OR $uData['expiration_date'] == '0000-00-00 00:00:00') {
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global $_configuration;
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if (isset($_configuration['multiple_access_urls']) && $_configuration['multiple_access_urls']) {
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//Check if user is an admin
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$my_user_is_admin = UserManager::is_admin($uData['user_id']);
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// This user is subscribed in these sites => $my_url_list
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$my_url_list = api_get_access_url_from_user($uData['user_id']);
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//Check the access_url configuration setting if the user is registered in the access_url_rel_user table
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//Getting the current access_url_id of the platform
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$current_access_url_id = api_get_current_access_url_id();
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if ($my_user_is_admin === false) {
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if (is_array($my_url_list) && count($my_url_list)>0 ) {
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// the user have the permissions to enter at this site
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if (in_array($current_access_url_id, $my_url_list)) {
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ConditionalLogin::check_conditions($uData);
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$_user['user_id'] = $uData['user_id'];
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$_user['status'] = $uData['status'];
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Session::write('_user',$_user);
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event_login();
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} else {
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$loginFailed = true;
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Session::erase('_uid');
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header('Location: '.api_get_path(WEB_PATH).'index.php?loginFailed=1&error=access_url_inactive');
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exit;
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}
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} else {
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$loginFailed = true;
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Session::erase('_uid');
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header('Location: '.api_get_path(WEB_PATH).'index.php?loginFailed=1&error=access_url_inactive');
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exit;
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}
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} else { //Only admins of the "main" (first) Chamilo portal can login wherever they want
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//var_dump($current_access_url_id, $my_url_list); exit;
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if (in_array(1, $my_url_list)) { //Check if this admin have the access_url_id = 1 which means the principal
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ConditionalLogin::check_conditions($uData);
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$_user['user_id'] = $uData['user_id'];
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$_user['status'] = $uData['status'];
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Session::write('_user',$_user);
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event_login();
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} else {
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//This means a secondary admin wants to login so we check as he's a normal user
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if (in_array($current_access_url_id, $my_url_list)) {
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$_user['user_id'] = $uData['user_id'];
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$_user['status'] = $uData['status'];
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Session::write('_user',$_user);
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event_login();
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} else {
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$loginFailed = true;
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Session::erase('_uid');
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header('Location: '.api_get_path(WEB_PATH).'index.php?loginFailed=1&error=access_url_inactive');
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exit;
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}
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}
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}
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} else {
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//error_log('Loggedin');
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ConditionalLogin::check_conditions($uData);
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$_user['user_id'] = $uData['user_id'];
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$_user['status'] = $uData['status'];
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Session::write('_user',$_user);
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event_login();
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}
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} else {
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$loginFailed = true;
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Session::erase('_uid');
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header('Location: '.api_get_path(WEB_PATH).'index.php?loginFailed=1&error=account_expired');
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exit;
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}
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} else {
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$loginFailed = true;
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Session::erase('_uid');
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header('Location: '.api_get_path(WEB_PATH).'index.php?loginFailed=1&error=account_inactive');
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exit;
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}
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} else {
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// login failed: username or password incorrect
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$loginFailed = true;
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Session::erase('_uid');
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header('Location: '.api_get_path(WEB_PATH).'index.php?loginFailed=1&error=user_password_incorrect');
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exit;
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}
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if (isset($uData['creator_id']) && $_user['user_id'] != $uData['creator_id']) {
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//first login for a not self registred
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//e.g. registered by a teacher
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//do nothing (code may be added later)
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}
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} elseif (!empty($extAuthSource[$uData['auth_source']]['login']) && file_exists($extAuthSource[$uData['auth_source']]['login'])) {
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/*
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* Process external authentication
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* on the basis of the given login name
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*/
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$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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} else { // no standard Chamilo login - try external authentification
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//huh... nothing to do... we shouldn't get here
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error_log('Chamilo 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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} else {
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// login failed, Database::num_rows($result) <= 0
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$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 Chamilo
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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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* Chamilo 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 $_user['user_id'].
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*/
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if (isset($extAuthSource) && is_array($extAuthSource)) {
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foreach($extAuthSource as $thisAuthSource) {
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if (!empty($thisAuthSource['newUser']) && file_exists($thisAuthSource['newUser'])) {
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include_once($thisAuthSource['newUser']);
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} else {
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error_log('Chamilo 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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if ($loginFailed) { //If we are here username given is wrong
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header('Location: '.api_get_path(WEB_PATH).'index.php?loginFailed=1&error=user_password_incorrect');
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}
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} //end else login failed
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} elseif (api_get_setting('sso_authentication')==='true' && !in_array('webservices', explode('/', $_SERVER['REQUEST_URI']))) {
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/**
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* TODO:
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* - Work on a better validation for webservices paths. Current is very poor and exit
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*/
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$subsso = api_get_setting('sso_authentication_subclass');
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//require_once(api_get_path(SYS_CODE_PATH).'auth/sso/sso.class.php'); moved to autologin
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if (!empty($subsso)) {
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require_once(api_get_path(SYS_CODE_PATH).'auth/sso/sso.'.$subsso.'.class.php');
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$subsso = 'sso'.$subsso;
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$osso = new $subsso(); //load the subclass
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} else {
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$osso = new sso();
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}
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if (isset($_SESSION['_user']['user_id'])) {
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if ($logout) {
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// Make custom redirect after logout
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online_logout($_SESSION['_user']['user_id'], false);
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$osso->logout(); //redirects and exits
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}
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} elseif(!$logout) {
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// Handle cookie comming from Master Server
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if (!isset($_GET['sso_referer']) && !isset($_GET['loginFailed'])) {
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// Redirect to master server
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$osso->ask_master();
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} elseif (isset($_GET['sso_cookie'])) {
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// Here we are going to check the origin of
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// what the call says should be used for
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// authentication, and ensure we know it
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$matches_domain = false;
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if (isset($_GET['sso_referer'])) {
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$protocol = api_get_setting('sso_authentication_protocol');
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// sso_authentication_domain can list
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// several, comma-separated, domains
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$master_urls = split(',',api_get_setting('sso_authentication_domain'));
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if (!empty($master_urls)) {
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$master_auth_uri = api_get_setting('sso_authentication_auth_uri');
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foreach ($master_urls as $mu) {
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if (empty($mu)) { continue; }
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// for each URL, check until we find *one* that matches the $_GET['sso_referer'], then skip the rest
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if ($protocol.trim($mu).$master_auth_uri === $_GET['sso_referer']) {
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$matches_domain = true;
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break;
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}
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}
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} else {
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error_log('Your sso_authentication_master param is empty. Check the platform configuration, security section. It can be a list of comma-separated domains');
|
|
}
|
|
}
|
|
if ($matches_domain) {
|
|
//make all the process of checking
|
|
//if the user exists (delegated to the sso class)
|
|
$osso->check_user();
|
|
|
|
} else {
|
|
error_log('Check the sso_referer URL in your script, it doesn\'t match any of the possibilities');
|
|
//Request comes from unknown source
|
|
$loginFailed = true;
|
|
Session::erase('_uid');
|
|
header('Location: '.api_get_path(WEB_PATH).'index.php?loginFailed=1&error=unrecognize_sso_origin');
|
|
exit;
|
|
}
|
|
}
|
|
}//end logout ... else ... login
|
|
} elseif (api_get_setting('openid_authentication')=='true') {
|
|
if (!empty($_POST['openid_url'])) {
|
|
include 'main/auth/openid/login.php';
|
|
openid_begin(trim($_POST['openid_url']),api_get_path(WEB_PATH).'index.php');
|
|
//this last function should trigger a redirect, so we can die here safely
|
|
die('Openid login redirection should be in progress');
|
|
} elseif (!empty($_GET['openid_identity'])) {
|
|
//it's usual for PHP to replace '.' (dot) by '_' (underscore) in URL parameters
|
|
include('main/auth/openid/login.php');
|
|
$res = openid_complete($_GET);
|
|
if ($res['status'] == 'success') {
|
|
$id1 = Database::escape_string($res['openid.identity']);
|
|
//have another id with or without the final '/'
|
|
$id2 = (substr($id1,-1,1)=='/'?substr($id1,0,-1):$id1.'/');
|
|
//lookup the user in the main database
|
|
$user_table = Database::get_main_table(TABLE_MAIN_USER);
|
|
$sql = "SELECT user_id, username, password, auth_source, active, expiration_date
|
|
FROM $user_table
|
|
WHERE openid = '$id1'
|
|
OR openid = '$id2' ";
|
|
$result = Database::query($sql);
|
|
if ($result !== false) {
|
|
if (Database::num_rows($result)>0) {
|
|
//$row = Database::fetch_array($res);
|
|
$uData = Database::fetch_array($result);
|
|
|
|
if ($uData['auth_source'] == PLATFORM_AUTH_SOURCE) {
|
|
//the authentification of this user is managed by Chamilo itself
|
|
|
|
// check if the account is active (not locked)
|
|
if ($uData['active']=='1') {
|
|
// check if the expiration date has not been reached
|
|
if ($uData['expiration_date']>date('Y-m-d H:i:s') OR $uData['expiration_date']=='0000-00-00 00:00:00') {
|
|
$_user['user_id'] = $uData['user_id'];
|
|
$_user['status'] = $uData['status'];
|
|
|
|
Session::write('_user',$_user);
|
|
event_login();
|
|
} else {
|
|
$loginFailed = true;
|
|
Session::erase('_uid');
|
|
header('Location: index.php?loginFailed=1&error=account_expired');
|
|
exit;
|
|
}
|
|
} else {
|
|
$loginFailed = true;
|
|
Session::erase('_uid');
|
|
header('Location: index.php?loginFailed=1&error=account_inactive');
|
|
exit;
|
|
}
|
|
if (isset($uData['creator_id']) && $_user['user_id'] != $uData['creator_id']) {
|
|
//first login for a not self registred
|
|
//e.g. registered by a teacher
|
|
//do nothing (code may be added later)
|
|
}
|
|
}
|
|
} else {
|
|
//Redirect to the subscription form
|
|
header('Location: '.api_get_path(WEB_CODE_PATH).'auth/inscription.php?username='.$res['openid.sreg.nickname'].'&email='.$res['openid.sreg.email'].'&openid='.$res['openid.identity'].'&openid_msg=idnotfound');
|
|
//$loginFailed = true;
|
|
}
|
|
} else {
|
|
$loginFailed = true;
|
|
}
|
|
} else {
|
|
$loginFailed = true;
|
|
}
|
|
}
|
|
} elseif (KeyAuth::is_enabled()) {
|
|
$success = KeyAuth::instance()->login();
|
|
if($success)
|
|
{
|
|
$use_anonymous = false;
|
|
}
|
|
}
|
|
|
|
// else {} => continue as anonymous user
|
|
$uidReset = true;
|
|
|
|
// $cidReset = true;
|
|
// $gidReset = true;
|
|
} // end else
|
|
|
|
//Now check for anonymous user mode
|
|
if (isset($use_anonymous) && $use_anonymous) {
|
|
//if anonymous mode is set, then try to set the current user as anonymous
|
|
//if he doesn't have a login yet
|
|
api_set_anonymous();
|
|
} else {
|
|
//if anonymous mode is not set, then check if this user is anonymous. If it
|
|
//is, clean it from being anonymous (make him a nobody :-))
|
|
api_clear_anonymous();
|
|
}
|
|
|
|
// if there is a cDir parameter in the URL (coming from courses/.htaccess redirection)
|
|
if (!empty($cDir)) {
|
|
$c = CourseManager::get_course_id_from_path($cDir);
|
|
if ($c) { $cidReq = $c; }
|
|
}
|
|
|
|
// if the requested course is different from the course in session
|
|
|
|
if (!empty($cidReq) && (!isset($_SESSION['_cid']) or (isset($_SESSION['_cid']) && $cidReq != $_SESSION['_cid']))) {
|
|
$cidReset = true;
|
|
$gidReset = true; // As groups depend from courses, group id is reset
|
|
}
|
|
|
|
// if the requested group is different from the group in session
|
|
$gid = isset($_SESSION['_gid']) ? $_SESSION['_gid'] : '';
|
|
if ($gidReq && $gidReq != $gid) {
|
|
$gidReset = true;
|
|
}
|
|
|
|
|
|
/* USER INIT */
|
|
|
|
if (isset($uidReset) && $uidReset) { // session data refresh requested
|
|
unset($_SESSION['_user']['uidReset']);
|
|
$is_platformAdmin = false;
|
|
$is_allowedCreateCourse = false;
|
|
|
|
if (isset($_user['user_id']) && $_user['user_id'] && ! api_is_anonymous()) {
|
|
// a uid is given (log in succeeded)
|
|
$user_table = Database::get_main_table(TABLE_MAIN_USER);
|
|
$admin_table = Database::get_main_table(TABLE_MAIN_ADMIN);
|
|
$track_e_login = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
|
|
|
|
$sql = "SELECT user.*, a.user_id is_admin, UNIX_TIMESTAMP(login.login_date) login_date
|
|
FROM $user_table
|
|
LEFT JOIN $admin_table a
|
|
ON user.user_id = a.user_id
|
|
LEFT JOIN $track_e_login login
|
|
ON user.user_id = login.login_user_id
|
|
WHERE user.user_id = '".$_user['user_id']."'
|
|
ORDER BY login.login_date DESC LIMIT 1";
|
|
|
|
$result = Database::query($sql);
|
|
|
|
if (Database::num_rows($result) > 0) {
|
|
// Extracting the user data
|
|
|
|
$uData = Database::fetch_array($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'];
|
|
$_user ['theme'] = $uData ['theme'];
|
|
$_user ['status'] = $uData ['status'];
|
|
|
|
$is_platformAdmin = (bool) (! is_null( $uData['is_admin']));
|
|
$is_allowedCreateCourse = (bool) (($uData ['status'] == COURSEMANAGER) or (api_get_setting('drhCourseManagerRights') and $uData['status'] == DRH));
|
|
ConditionalLogin::check_conditions($uData);
|
|
|
|
Session::write('_user',$_user);
|
|
UserManager::update_extra_field_value($_user['user_id'], 'already_logged_in', 'true');
|
|
Session::write('is_platformAdmin',$is_platformAdmin);
|
|
Session::write('is_allowedCreateCourse',$is_allowedCreateCourse);
|
|
|
|
// If request_uri is setted we have to go further to have course permissions
|
|
/*if (empty($_SESSION['request_uri']) || !isset($_SESSION['request_uri'])) {
|
|
if (isset($_SESSION['noredirection'])) {
|
|
//If we just want to reset info without redirecting user
|
|
unset($_SESSION['noredirection']);
|
|
} else {
|
|
LoginRedirection::redirect();
|
|
}
|
|
}*/
|
|
} else {
|
|
header('location:'.api_get_path(WEB_PATH));
|
|
//exit("WARNING UNDEFINED UID !! ");
|
|
}
|
|
} else { // no uid => logout or Anonymous
|
|
Session::erase('_user');
|
|
Session::erase('_uid');
|
|
}
|
|
|
|
Session::write('is_platformAdmin',$is_platformAdmin);
|
|
Session::write('is_allowedCreateCourse',$is_allowedCreateCourse);
|
|
} else { // continue with the previous values
|
|
$_user = $_SESSION['_user'];
|
|
$is_platformAdmin = isset($_SESSION['is_platformAdmin']) ? $_SESSION['is_platformAdmin'] : false;
|
|
$is_allowedCreateCourse = isset($_SESSION['is_allowedCreateCourse']) ? $_SESSION['is_allowedCreateCourse'] : false;
|
|
}
|
|
|
|
/* COURSE INIT */
|
|
|
|
if (isset($cidReset) && $cidReset) {
|
|
// Course session data refresh requested or empty data
|
|
if ($cidReq) {
|
|
$_course = CourseManager::get_course_info_with_category($cidReq);
|
|
|
|
if (!empty($_course)) {
|
|
|
|
//@TODO real_cid should be cid, for working with numeric course id
|
|
$_real_cid = $_course['real_id'];
|
|
$_cid = $_course['code'];
|
|
|
|
Session::write('_real_cid', $_real_cid);
|
|
Session::write('_cid', $_cid);
|
|
Session::write('_course', $_course);
|
|
|
|
// if a session id has been given in url, we store the session
|
|
|
|
// Database Table Definitions
|
|
$tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
|
|
$tbl_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
|
|
$tbl_session_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
|
|
|
|
if (!empty($_GET['id_session'])) {
|
|
$_SESSION['id_session'] = intval($_GET['id_session']);
|
|
$sql = 'SELECT name FROM '.$tbl_session . ' WHERE id="'.intval($_SESSION['id_session']) . '"';
|
|
$rs = Database::query($sql);
|
|
list($_SESSION['session_name']) = Database::fetch_array($rs);
|
|
} else {
|
|
Session::erase('session_name');
|
|
Session::erase('id_session');
|
|
}
|
|
|
|
|
|
if (!isset($_SESSION['login_as'])) {
|
|
//Course login
|
|
if (isset($_user['user_id'])) {
|
|
event_course_login($_course['code'], $_user['user_id'], api_get_session_id());
|
|
}
|
|
}
|
|
} else {
|
|
//exit("WARNING UNDEFINED CID !! ");
|
|
header('location:'.api_get_path(WEB_PATH));
|
|
}
|
|
} else {
|
|
Session::erase('_cid');
|
|
Session::erase('_real_cid');
|
|
Session::erase('_course');
|
|
|
|
if (!empty($_SESSION)) {
|
|
foreach($_SESSION as $key => $session_item) {
|
|
if (strpos($key,'lp_autolunch_') === false) {
|
|
continue;
|
|
} else {
|
|
if (isset($_SESSION[$key])) {
|
|
Session::erase($key);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
//Deleting session info
|
|
if (api_get_session_id()) {
|
|
Session::erase('id_session');
|
|
Session::erase('session_name');
|
|
}
|
|
}
|
|
} else {
|
|
|
|
// Continue with the previous values
|
|
|
|
if (empty($_SESSION['_course']) && !empty($_SESSION['_cid'])) {
|
|
//Just in case $_course is empty we try to load if the c_id still exists
|
|
$_course = CourseManager::get_course_info_with_category($_SESSION['_cid']);
|
|
if (!empty($_course)) {
|
|
$_real_cid = $_course['real_id'];
|
|
$_cid = $_course['code'];
|
|
|
|
Session::write('_real_cid', $_real_cid);
|
|
Session::write('_cid', $_cid);
|
|
Session::write('_course', $_course);
|
|
}
|
|
}
|
|
|
|
if (empty($_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);
|
|
$sql = 'SELECT name FROM '.$tbl_session . ' WHERE id="'.intval($_SESSION['id_session']). '"';
|
|
$rs = Database::query($sql);
|
|
list($_SESSION['session_name']) = Database::fetch_array($rs);
|
|
$_SESSION['id_session'] = intval($_GET['id_session']);
|
|
}
|
|
|
|
if (!isset($_SESSION['login_as'])) {
|
|
$save_course_access = true;
|
|
|
|
//The value $_dont_save_user_course_access should be added before the call of global.inc.php see the main/inc/chat.ajax.php file
|
|
//Disables the updates in the TRACK_E_COURSE_ACCESS table
|
|
if (isset($_dont_save_user_course_access) && $_dont_save_user_course_access == true) {
|
|
$save_course_access = false;
|
|
}
|
|
|
|
if ($save_course_access) {
|
|
$course_tracking_table = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
|
|
|
|
/*
|
|
* When $_configuration['session_lifetime'] is too big 100 hours (in order to let users take exercises with no problems)
|
|
* the function Tracking::get_time_spent_on_the_course() returns big values (200h) due the condition:
|
|
* login_course_date > now() - INTERVAL $session_lifetime SECOND
|
|
*
|
|
*/
|
|
/*
|
|
if (isset($_configuration['session_lifetime'])) {
|
|
$session_lifetime = $_configuration['session_lifetime'];
|
|
} else {
|
|
$session_lifetime = 3600; // 1 hour
|
|
}*/
|
|
|
|
$session_lifetime = 3600; // 1 hour
|
|
|
|
$course_code = $_course['sysCode'];
|
|
$time = api_get_datetime();
|
|
|
|
if (isset($_user['user_id']) && !empty($_user['user_id'])) {
|
|
|
|
//We select the last record for the current course in the course tracking table
|
|
//But only if the login date is < than now + max_life_time
|
|
$sql = "SELECT course_access_id FROM $course_tracking_table
|
|
WHERE user_id = ".intval($_user ['user_id'])." AND
|
|
course_code = '$course_code' AND
|
|
session_id = ".api_get_session_id()." AND
|
|
login_course_date > now() - INTERVAL $session_lifetime SECOND
|
|
ORDER BY login_course_date DESC LIMIT 0,1";
|
|
$result = Database::query($sql);
|
|
|
|
if (Database::num_rows($result) > 0) {
|
|
$i_course_access_id = Database::result($result,0,0);
|
|
//We update the course tracking table
|
|
$sql = "UPDATE $course_tracking_table SET logout_course_date = '$time', counter = counter+1
|
|
WHERE course_access_id = ".intval($i_course_access_id)." AND session_id = ".api_get_session_id();
|
|
//error_log($sql);
|
|
Database::query($sql);
|
|
} else {
|
|
$sql="INSERT INTO $course_tracking_table (course_code, user_id, login_course_date, logout_course_date, counter, session_id)" .
|
|
"VALUES('".$course_code."', '".$_user['user_id']."', '$time', '$time', '1','".api_get_session_id()."')";
|
|
//error_log($sql);
|
|
Database::query($sql);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* COURSE / USER REL. INIT */
|
|
|
|
$session_id = api_get_session_id();
|
|
$user_id = isset($_user['user_id']) ? $_user['user_id'] : null;
|
|
|
|
//Course permissions
|
|
$is_courseAdmin = false; //course teacher
|
|
$is_courseTutor = false; //course teacher - some rights
|
|
$is_courseMember = false; //course student
|
|
$is_courseCoach = false; //course coach
|
|
|
|
//Course - User permissions
|
|
$is_sessionAdmin = false;
|
|
|
|
if ((isset($uidReset) && $uidReset) || (isset($cidReset) && $cidReset)) {
|
|
|
|
if (isset($_cid) && $_cid) {
|
|
$my_user_id = isset($user_id) ? intval($user_id) : 0;
|
|
$variable = 'accept_legal_'.$my_user_id.'_'.$_course['real_id'].'_'.$session_id;
|
|
|
|
$user_pass_open_course = false;
|
|
if (api_check_user_access_to_legal($_course['visibility']) && Session::read($variable)) {
|
|
$user_pass_open_course = true;
|
|
}
|
|
|
|
//Checking if the user filled the course legal agreement
|
|
if ($_course['activate_legal'] == 1 && !api_is_platform_admin()) {
|
|
$user_is_subscribed = CourseManager::is_user_accepted_legal($user_id, $_course['id'], $session_id) || $user_pass_open_course;
|
|
if (!$user_is_subscribed) {
|
|
$url = api_get_path(WEB_CODE_PATH).'course_info/legal.php?course_code='.$_course['code'].'&session_id='.$session_id;
|
|
header('Location: '.$url);
|
|
exit;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
if (isset($user_id) && $user_id && isset($_cid) && $_cid) {
|
|
|
|
//Check if user is subscribed in a course
|
|
$course_user_table = Database::get_main_table(TABLE_MAIN_COURSE_USER);
|
|
$sql = "SELECT * FROM $course_user_table
|
|
WHERE user_id = '".$user_id."' AND relation_type <> ".COURSE_RELATION_TYPE_RRHH."
|
|
AND course_code = '$cidReq'";
|
|
$result = Database::query($sql);
|
|
|
|
$cuData = null;
|
|
if (Database::num_rows($result) > 0) { // this user have a recorded state for this course
|
|
$cuData = Database::fetch_array($result, 'ASSOC');
|
|
$is_courseAdmin = (bool) ($cuData['status'] == 1 );
|
|
$is_courseTutor = (bool) ($cuData['tutor_id' ] == 1 );
|
|
$is_courseMember = true;
|
|
|
|
|
|
$_courseUser['role'] = $cuData['role'];
|
|
Session::write('_courseUser',$_courseUser);
|
|
}
|
|
|
|
//We are in a session course? Check session permissions
|
|
if (!empty($session_id)) {
|
|
//I'm not the teacher of the course
|
|
if ($is_courseAdmin == false) {
|
|
// this user has no status related to this course
|
|
// The user is subscribed in a session? The user is a Session coach a Session admin ?
|
|
|
|
$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);
|
|
|
|
//Session coach, session admin, course coach admin
|
|
$sql = "SELECT session.id_coach, session_admin_id, session_rcru.id_user
|
|
FROM $tbl_session session, $tbl_session_course_user session_rcru
|
|
WHERE session_rcru.id_session = session.id AND
|
|
session_rcru.course_code = '$_cid' AND
|
|
session_rcru.id_user = '$user_id' AND
|
|
session_rcru.id_session = $session_id AND
|
|
session_rcru.status = 2";
|
|
|
|
$result = Database::query($sql);
|
|
$row = Database::store_result($result);
|
|
|
|
//I'm a session admin?
|
|
if (isset($row) && isset($row[0]) && $row[0]['session_admin_id'] == $user_id) {
|
|
$_courseUser['role'] = 'Professor';
|
|
$is_courseMember = false;
|
|
$is_courseTutor = false;
|
|
$is_courseAdmin = false;
|
|
$is_courseCoach = false;
|
|
$is_sessionAdmin = true;
|
|
} else {
|
|
//Im a coach or a student?
|
|
$sql = "SELECT id_user, status FROM ".$tbl_session_course_user."
|
|
WHERE course_code = '$_cid' AND
|
|
id_user = '".$user_id."' AND
|
|
id_session = '".$session_id."'
|
|
LIMIT 1";
|
|
$result = Database::query($sql);
|
|
|
|
if (Database::num_rows($result)) {
|
|
$row = Database::fetch_array($result, 'ASSOC');
|
|
|
|
$session_course_status = $row['status'];
|
|
|
|
switch ($session_course_status) {
|
|
case '2': // coach - teacher
|
|
$_courseUser['role'] = 'Professor';
|
|
$is_courseMember = true;
|
|
$is_courseTutor = true;
|
|
$is_courseCoach = true;
|
|
$is_sessionAdmin = false;
|
|
|
|
if (api_get_setting('extend_rights_for_coach') == 'true') {
|
|
$is_courseAdmin = true;
|
|
} else {
|
|
$is_courseAdmin = false;
|
|
}
|
|
Session::write('_courseUser', $_courseUser);
|
|
break;
|
|
case '0': //student
|
|
$_courseUser['role'] = '';
|
|
$is_courseMember = true;
|
|
$is_courseTutor = false;
|
|
$is_courseAdmin = false;
|
|
$is_courseCoach = false;
|
|
$is_sessionAdmin = false;
|
|
Session::write('_courseUser', $_courseUser);
|
|
break;
|
|
default:
|
|
//unregister user
|
|
$_courseUser['role'] = '';
|
|
$is_courseMember = false;
|
|
$is_courseTutor = false;
|
|
$is_courseAdmin = false;
|
|
$is_sessionAdmin = false;
|
|
$is_courseCoach = false;
|
|
Session::erase('_courseUser');
|
|
break;
|
|
}
|
|
} else {
|
|
//unregister user
|
|
$is_courseMember = false;
|
|
$is_courseTutor = false;
|
|
$is_courseAdmin = false;
|
|
$is_sessionAdmin = false;
|
|
$is_courseCoach = false;
|
|
Session::erase('_courseUser');
|
|
}
|
|
}
|
|
}
|
|
|
|
//If I'm the admin platform i'm a teacher of the course
|
|
if ($is_platformAdmin) {
|
|
$is_courseAdmin = true;
|
|
}
|
|
}
|
|
} else { // keys missing => not anymore in the course - user relation
|
|
// course
|
|
$is_courseMember = false;
|
|
$is_courseAdmin = false;
|
|
$is_courseTutor = false;
|
|
$is_courseCoach = false;
|
|
$is_sessionAdmin = false;
|
|
Session::erase('_courseUser');
|
|
}
|
|
|
|
//Checking the course access
|
|
$is_allowed_in_course = false;
|
|
|
|
if (isset($_course)) {
|
|
switch ($_course['visibility']) {
|
|
case COURSE_VISIBILITY_OPEN_WORLD: //3
|
|
$is_allowed_in_course = true;
|
|
break;
|
|
case COURSE_VISIBILITY_OPEN_PLATFORM : //2
|
|
if (isset($user_id) && !api_is_anonymous($user_id)) {
|
|
$is_allowed_in_course = true;
|
|
}
|
|
break;
|
|
case COURSE_VISIBILITY_REGISTERED: //1
|
|
if ($is_platformAdmin || $is_courseMember) {
|
|
$is_allowed_in_course = true;
|
|
}
|
|
break;
|
|
case COURSE_VISIBILITY_CLOSED: //0
|
|
if ($is_platformAdmin || $is_courseAdmin) {
|
|
$is_allowed_in_course = true;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// check the session visibility
|
|
if ($is_allowed_in_course == true) {
|
|
|
|
//if I'm in a session
|
|
if ($session_id != 0) {
|
|
if (!$is_platformAdmin) {
|
|
// admin is not affected to the invisible session mode
|
|
$session_visibility = api_get_session_visibility($session_id);
|
|
|
|
switch ($session_visibility) {
|
|
case SESSION_INVISIBLE:
|
|
$is_allowed_in_course = false;
|
|
break;
|
|
}
|
|
//checking date
|
|
}
|
|
}
|
|
}
|
|
|
|
// save the states
|
|
Session::write('is_courseAdmin', $is_courseAdmin);
|
|
Session::write('is_courseMember', $is_courseMember);
|
|
Session::write('is_courseTutor', $is_courseTutor);
|
|
Session::write('is_courseCoach', $is_courseCoach);
|
|
Session::write('is_allowed_in_course', $is_allowed_in_course);
|
|
Session::write('is_sessionAdmin', $is_sessionAdmin);
|
|
} else { // continue with the previous values
|
|
|
|
if (isset($_SESSION['_courseUser'])) {
|
|
$_courseUser = $_SESSION ['_courseUser'];
|
|
}
|
|
|
|
$is_courseAdmin = isset($_SESSION ['is_courseAdmin']) ? $_SESSION ['is_courseAdmin'] : false;
|
|
$is_courseTutor = isset($_SESSION ['is_courseTutor']) ? $_SESSION ['is_courseTutor'] : false;
|
|
$is_courseCoach = isset($_SESSION ['is_courseCoach']) ? $_SESSION ['is_courseCoach'] : false;
|
|
$is_courseMember = isset($_SESSION ['is_courseMember']) ? $_SESSION ['is_courseMember'] : false;
|
|
$is_allowed_in_course = isset($_SESSION ['is_allowed_in_course']) ? $_SESSION ['is_allowed_in_course'] : false;
|
|
}
|
|
|
|
/* GROUP INIT */
|
|
|
|
if ((isset($gidReset) && $gidReset) || (isset($cidReset) && $cidReset)) { // session data refresh requested
|
|
if ($gidReq && $_cid && !empty($_course['real_id'])) { // have keys to search data
|
|
$group_table = Database::get_course_table(TABLE_GROUP);
|
|
$sql = "SELECT * FROM $group_table WHERE c_id = ".$_course['real_id']." AND id = '$gidReq'";
|
|
$result = Database::query($sql);
|
|
if (Database::num_rows($result) > 0) { // This group has recorded status related to this course
|
|
$gpData = Database::fetch_array($result);
|
|
$_gid = $gpData ['id'];
|
|
Session::write('_gid',$_gid);
|
|
} else {
|
|
Session::erase('_gid');
|
|
}
|
|
} elseif (isset($_SESSION['_gid']) or isset($_gid)) { // Keys missing => not anymore in the group - course relation
|
|
Session::erase('_gid');
|
|
}
|
|
} elseif (isset($_SESSION['_gid'])) { // continue with the previous values
|
|
$_gid = $_SESSION ['_gid'];
|
|
} else { //if no previous value, assign caracteristic undefined value
|
|
$_gid = -1;
|
|
}
|
|
|
|
//set variable according to student_view_enabled choices
|
|
if (api_get_setting('student_view_enabled') == "true") {
|
|
if (isset($_GET['isStudentView'])) {
|
|
if ($_GET['isStudentView'] == 'true') {
|
|
if (isset($_SESSION['studentview'])) {
|
|
if (!empty($_SESSION['studentview'])) {
|
|
// switching to studentview
|
|
$_SESSION['studentview'] = 'studentview';
|
|
}
|
|
}
|
|
} elseif ($_GET['isStudentView'] == 'false') {
|
|
if (isset($_SESSION['studentview'])) {
|
|
if (!empty($_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);
|
|
$time = api_get_datetime();
|
|
$sql="UPDATE $tbl_course SET last_visit= '$time' WHERE code='$_cid'";
|
|
Database::query($sql);
|
|
}
|
|
|
|
Redirect::session_request_uri();
|
|
|
|
/*
|
|
$no_redirection = isset($no_redirection) ? $no_redirection : false;
|
|
if (!$no_redirection && (isset($_SESSION['request_uri']) && !empty($_SESSION['request_uri']))){
|
|
$req= $_SESSION['request_uri'];
|
|
unset($_SESSION['request_uri']);
|
|
header('Location: '.$req);
|
|
exit;
|
|
}
|
|
*/
|
|
|