<?php
use \ChamiloSession as Session;
/* For licensing terms, see /license.txt */
/**
* Code library for login process
*
* @author Olivier Cauberghe < olivier.cauberghe @ UGent . be > , Ghent University
* @author Julio Montoya < gugli100 @ gmail . com >
* @package chamilo.login
*/
/**
* Class
* @package chamilo.login
*/
class Login
{
/**
* Get user account list
*
* @param array $user array with keys: email, password, uid, loginName
* @param boolean $reset
* @param boolean $by_username
* @return unknown
*/
public static function get_user_account_list($user, $reset = false, $by_username = false)
{
global $_configuration;
$portal_url = api_get_path(WEB_PATH);
if ($_configuration['multiple_access_urls']) {
$access_url_id = api_get_current_access_url_id();
if ($access_url_id != -1) {
$url = api_get_access_url($access_url_id);
$portal_url = $url['url'];
}
}
if ($reset) {
if ($by_username) {
$secret_word = self::get_secret_word($user['email']);
if ($reset) {
$reset_link = $portal_url . "main/auth/lostPassword.php?reset=" . $secret_word . "& id=" . $user['uid'];
} else {
$reset_link = get_lang('Pass') . " : $user[password]";
}
$user_account_list = get_lang('YourRegistrationData') . " : \n" . get_lang('UserName') . ' : ' . $user['loginName'] . "\n" . get_lang('ResetLink') . ' : ' . $reset_link . '';
if ($user_account_list) {
$user_account_list = "\n-----------------------------------------------\n" . $user_account_list;
}
} else {
foreach ($user as $this_user) {
$secret_word = self::get_secret_word($this_user['email']);
if ($reset) {
$reset_link = $portal_url . "main/auth/lostPassword.php?reset=" . $secret_word . "& id=" . $this_user['uid'];
} else {
$reset_link = get_lang('Pass') . " : $this_user[password]";
}
$user_account_list[] = get_lang('YourRegistrationData') . " : \n" . get_lang('UserName') . ' : ' . $this_user['loginName'] . "\n" . get_lang('ResetLink') . ' : ' . $reset_link . '';
}
if ($user_account_list) {
$user_account_list = implode("\n-----------------------------------------------\n", $user_account_list);
}
}
} else {
if (!$by_username) {
$user = $user[0];
}
$reset_link = get_lang('Pass') . " : $user[password]";
$user_account_list = get_lang('YourRegistrationData') . " : \n" . get_lang('UserName') . ' : ' . $user['loginName'] . "\n" . $reset_link . '';
}
return $user_account_list;
}
/**
* This function sends the actual password to the user
*
* @param int $user
* @author Olivier Cauberghe < olivier.cauberghe @ UGent . be > , Ghent University
*/
public static function send_password_to_user($user, $by_username = false) {
global $_configuration;
$email_subject = "[" . api_get_setting('siteName') . "] " . get_lang('LoginRequest'); // SUBJECT
if ($by_username) { // Show only for lost password
$user_account_list = self::get_user_account_list($user, false, $by_username); // BODY
$email_to = $user['email'];
} else {
$user_account_list = self::get_user_account_list($user); // BODY
$email_to = $user[0]['email'];
}
$portal_url = api_get_path(WEB_PATH);
if ($_configuration['multiple_access_urls']) {
$access_url_id = api_get_current_access_url_id();
if ($access_url_id != -1) {
$url = api_get_access_url($access_url_id);
$portal_url = $url['url'];
}
}
$email_body = get_lang('YourAccountParam') . " " . $portal_url . "\n\n$user_account_list";
// SEND MESSAGE
$sender_name = api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, PERSON_NAME_EMAIL_ADDRESS);
$email_admin = api_get_setting('emailAdministrator');
if (api_mail_html('', $email_to, $email_subject, $email_body, $sender_name, $email_admin) == 1) {
return get_lang('YourPasswordHasBeenReset');
} else {
$admin_email = Display :: encrypted_mailto_link(api_get_setting('emailAdministrator'), api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname')));
return sprintf(get_lang('ThisPlatformWasUnableToSendTheEmailPleaseContactXForMoreInformation'), $admin_email);
}
}
/**
* Handle encrypted password, send an email to a user with his password
*
* @param int user id
* @param bool $by_username
*
* @author Olivier Cauberghe < olivier.cauberghe @ UGent . be > , Ghent University
*/
public static function handle_encrypted_password($user, $by_username = false) {
$email_subject = "[" . api_get_setting('siteName') . "] " . get_lang('LoginRequest'); // SUBJECT
if ($by_username) { // Show only for lost password
$user_account_list = self::get_user_account_list($user, true, $by_username); // BODY
$email_to = $user['email'];
} else {
$user_account_list = self::get_user_account_list($user, true); // BODY
$email_to = $user[0]['email'];
}
$email_body = get_lang('DearUser') . " :\n" . get_lang('password_request') . "\n";
$email_body .= $user_account_list . "\n-----------------------------------------------\n\n";
$email_body .= get_lang('PasswordEncryptedForSecurity');
$email_body .= "\n\n" . get_lang('SignatureFormula') . ",\n" . api_get_setting('administratorName') . " " . api_get_setting('administratorSurname') . "\n" . get_lang('PlataformAdmin') . " - " . api_get_setting('siteName');
$sender_name = api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname'), null, PERSON_NAME_EMAIL_ADDRESS);
$email_admin = api_get_setting('emailAdministrator');
if (@api_mail_html('', $email_to, $email_subject, $email_body, $sender_name, $email_admin) == 1) {
if (CustomPages::enabled()) {
return get_lang('YourPasswordHasBeenEmailed');
} else {
Display::display_confirmation_message(get_lang('YourPasswordHasBeenEmailed'));
}
} else {
$admin_email = Display :: encrypted_mailto_link(api_get_setting('emailAdministrator'), api_get_person_name(api_get_setting('administratorName'), api_get_setting('administratorSurname')));
$message = sprintf(get_lang('ThisPlatformWasUnableToSendTheEmailPleaseContactXForMoreInformation'), $admin_email);
if (CustomPages::enabled()) {
return $message;
} else {
Display::display_error_message($message, false);
}
}
}
/**
* Gets the secret word
* @author Olivier Cauberghe < olivier.cauberghe @ UGent . be > , Ghent University
*/
public static function get_secret_word($add)
{
return $secret_word = sha1($add);
}
/**
* Resets a password
* @author Olivier Cauberghe < olivier.cauberghe @ UGent . be > , Ghent University
*/
public static function reset_password($secret, $id, $by_username = false)
{
$tbl_user = Database::get_main_table(TABLE_MAIN_USER);
$id = intval($id);
$sql = "SELECT user_id AS uid, lastname AS lastName, firstname AS firstName, username AS loginName, password, email FROM " . $tbl_user . " WHERE user_id=$id";
$result = Database::query($sql);
$num_rows = Database::num_rows($result);
if ($result & & $num_rows > 0) {
$user = Database::fetch_array($result);
} else {
return get_lang('CouldNotResetPassword');
}
if (self::get_secret_word($user['email']) == $secret) {
// OK, secret word is good. Now change password and mail it.
$user['password'] = api_generate_password();
$crypted = api_get_encrypted_password($user['password']);
$sql = "UPDATE " . $tbl_user . " SET password='$crypted' WHERE user_id = $id";
Database::query($sql);
return self::send_password_to_user($user, $by_username);
} else {
return get_lang('NotAllowed');
}
}
/**
*
* @global bool $is_platformAdmin
* @global bool $is_allowedCreateCourse
* @global object $_user
*/
public static function init_user($user_id, $reset)
{
global $is_platformAdmin;
global $is_allowedCreateCourse;
global $_user;
if (isset($reset) & & $reset) { // session data refresh requested
unset($_SESSION['_user']['uidReset']);
$is_platformAdmin = false;
$is_allowedCreateCourse = false;
$_user['user_id'] = $user_id;
if (isset($_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'] == 1) or (api_get_setting('drhCourseManagerRights') and $uData['status'] == 4));
ConditionalLogin::check_conditions($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 = $_SESSION['is_platformAdmin'];
$is_allowedCreateCourse = $_SESSION['is_allowedCreateCourse'];
}
}
/**
*
* @global bool $is_platformAdmin
* @global bool $is_allowedCreateCourse
* @global object $_user
* @global int $_cid
* @global array $_course
* @global type $_real_cid
* @global type $_courseUser
* @global type $is_courseAdmin
* @global type $is_courseTutor
* @global type $is_courseCoach
* @global type $is_courseMember
* @global type $is_sessionAdmin
* @global type $is_allowed_in_course
*
* @param type $course_id
* @param type $reset
*/
static function init_course($course_id, $reset)
{
global $_configuration;
global $is_platformAdmin;
global $is_allowedCreateCourse;
global $_user;
global $_cid;
global $_course;
global $_real_cid;
global $_courseUser;
global $is_courseAdmin; //course teacher
global $is_courseTutor; //course teacher - some rights
global $is_courseCoach; //course coach
global $is_courseMember; //course student
global $is_sessionAdmin;
global $is_allowed_in_course;
if ($reset) {
// Course session data refresh requested or empty data
if ($course_id) {
$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 $course_cat_table
ON course.category_code = course_category.code
WHERE course.code = '$course_id'";
$result = Database::query($sql);
if (Database::num_rows($result) > 0) {
$course_data = Database::fetch_array($result);
//@TODO real_cid should be cid, for working with numeric course id
$_real_cid = $course_data['id'];
$_cid = $course_data['code'];
$_course = array();
$_course['real_id'] = $course_data['id'];
$_course['id'] = $course_data['code']; //auto-assigned integer
$_course['code'] = $course_data['code'];
$_course['name'] = $course_data['title'];
$_course['title'] = $course_data['title'];
$_course['official_code'] = $course_data['visual_code']; // use in echo
$_course['sysCode'] = $course_data['code']; // use as key in db
$_course['path'] = $course_data['directory']; // use as key in path
$_course['dbName'] = $course_data['db_name']; // use as key in db list
$_course['db_name'] = $course_data['db_name']; // not needed in Chamilo 1.9
$_course['dbNameGlu'] = $_configuration['table_prefix'] . $course_data['db_name'] . $_configuration['db_glue']; // use in all queries //not needed in Chamilo 1.9
$_course['titular'] = $course_data['tutor_name']; // this should be deprecated and use the table course_rel_user
$_course['language'] = $course_data['course_language'];
$_course['extLink']['url'] = $course_data['department_url'];
$_course['extLink']['name'] = $course_data['department_name'];
$_course['categoryCode'] = $course_data['faCode'];
$_course['categoryName'] = $course_data['faName'];
$_course['visibility'] = $course_data['visibility'];
$_course['subscribe_allowed'] = $course_data['subscribe'];
$_course['unsubscribe'] = $course_data['unsubscribe'];
$_course['activate_legal'] = $course_data['activate_legal'];
$_course['show_score'] = $course_data['show_score']; //used in the work tool
Session::write('_cid', $_cid);
Session::write('_course', $_course);
//@TODO real_cid should be cid, for working with numeric course id
Session::write('_real_cid', $_real_cid);
// 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::event_course_login($_course['sysCode'], $_user['user_id'], api_get_session_id());
}
}
} else {
//exit("WARNING UNDEFINED CID !! ");
header('location:' . api_get_path(WEB_PATH));
}
} else {
Session::erase('_cid');
Session::erase('_real_cid');
Session::erase('_course');
if (!empty($_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']) 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'];
$time = api_get_utc_datetime();
if (isset($_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
//Course - User permissions
$is_sessionAdmin = false;
if ($reset) {
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 = '" . $user_id . "' AND relation_type < > " . COURSE_RELATION_TYPE_RRHH . "
AND course_code = '$course_id'";
$result = Database::query($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 );
$is_courseMember = true;
//Checking if the user filled the course legal agreement
if ($_course['activate_legal'] == 1 & & !api_is_platform_admin()) {
$user_is_subscribed = CourseManager::is_user_accepted_legal($user_id, $_course['id'], $session_id);
if (!$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;
}
}
$_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
$is_courseMember = true;
$is_courseTutor = false;
$is_courseAdmin = false;
$is_sessionAdmin = false;
Session::write('_courseUser', $_courseUser);
break;
default:
//unregister user
$is_courseMember = false;
$is_courseTutor = false;
$is_courseAdmin = false;
$is_sessionAdmin = false;
Session::erase('_courseUser');
break;
}
} else {
//unregister user
$is_courseMember = false;
$is_courseTutor = false;
$is_courseAdmin = false;
$is_sessionAdmin = false;
Session::erase('_courseUser');
}
}
}
//If I'm the admin platform i'm a teacher of the course
if ($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) {
$is_allowed_in_course = true;
}
break;
case COURSE_VISIBILITY_HIDDEN: //4
if ($is_platformAdmin) {
$is_allowed_in_course = true;
}
break;
}
}
// check the session visibility
if ($is_allowed_in_course == true) {
//if I'm in a session
if ($session_id != 0) {
if (!$is_platformAdmin) {
// admin and session coach are *not* affected to the invisible session mode
// the coach is not affected because he can log in some days after the end date of a session
$session_visibility = api_get_session_visibility($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 = $_SESSION ['is_courseAdmin'];
$is_courseTutor = $_SESSION ['is_courseTutor'];
$is_courseCoach = $_SESSION ['is_courseCoach'];
$is_courseMember = $_SESSION ['is_courseMember'];
$is_allowed_in_course = $_SESSION ['is_allowed_in_course'];
}
}
/**
*
* @global int $_cid
* @global array $_course
* @global int $_gid
*
* @param int $group_id
* @param bool $reset
*/
static function init_group($group_id, $reset)
{
global $_cid;
global $_course;
global $_gid;
if ($reset) { // session data refresh requested
if ($group_id & & $_cid & & !empty($_course['real_id'])) { // have keys to search data
$group_table = Database::get_course_table(TABLE_GROUP);
$sql = "SELECT * FROM $group_table WHERE c_id = " . $_course['real_id'] . " AND id = '$group_id'";
$result = Database::query($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';
}
}
}
/**
* Returns true if user exists in the platform when asking the password
*
* @param string $username (email or username)
* @return boolean
*/
public static function get_user_accounts_by_username($username)
{
if (strpos($username,'@')){
$username = api_strtolower($username);
$email = true;
} else {
$username = api_strtolower($username);
$email = false;
}
$condition = '';
if ($email) {
$condition = "LOWER(email) = '".Database::escape_string($username)."' ";
} else {
$condition = "LOWER(username) = '".Database::escape_string($username)."'";
}
$tbl_user = Database :: get_main_table(TABLE_MAIN_USER);
$query = "SELECT user_id AS uid, lastname AS lastName, firstname AS firstName, username AS loginName, password, email,
status AS status, official_code, phone, picture_uri, creator_id
FROM $tbl_user
WHERE ( $condition AND active = 1) ";
$result = Database::query($query);
$num_rows = Database::num_rows($result);
if ($result & & $num_rows > 0) {
return Database::store_result($result);
}
return false;
}
}
