/**
* This function connect to facebook and retrieves the user info
* If user does not exist in chamilo, it creates it and logs in
* If user already exists, it updates his info
*/
function facebookConnect()
{
global $facebook_config;
global $helper;
try {
$helper = new FacebookRedirectLoginHelper($facebook_config['return_url']);
$session = $helper->getSessionFromRedirect();
// see if we have a session
if (isset($session)) {
// graph api request for user data
$request = new FacebookRequest($session, 'GET', '/me');
$response = $request->execute();
// get response
$graphObject = $response->getGraphObject();
$username = changeToValidChamiloLogin($graphObject->getProperty('email'));
$email = $graphObject->getProperty('email');
$locale = $graphObject->getProperty('locale');
$language = facebookPluginGetLanguage($locale);
if (!$language) {
$language = 'en_US';
}
//Checks if user already exists in chamilo
$u = array('firstname' => $graphObject->getProperty('first_name'), 'lastname' => $graphObject->getProperty('last_name'), 'status' => STUDENT, 'email' => $graphObject->getProperty('email'), 'username' => $username, 'language' => $language, 'password' => 'facebook', 'auth_source' => 'facebook', 'extra' => array());
$chamiloUinfo = api_get_user_info_from_email($email);
if ($chamiloUinfo === false) {
// we have to create the user
$chamilo_uid = external_add_user($u);
if ($chamilo_uid !== false) {
$_user['user_id'] = $chamilo_uid;
$_user['uidReset'] = true;
$_SESSION['_user'] = $_user;
header('Location:' . api_get_path(WEB_PATH));
exit;
} else {
return false;
}
} else {
// User already exists, update info and login
$chamilo_uid = $chamiloUinfo['user_id'];
$u['user_id'] = $chamilo_uid;
external_update_user($u);
$_user['user_id'] = $chamilo_uid;
$_user['uidReset'] = true;
$_SESSION['_user'] = $_user;
header('Location:' . api_get_path(WEB_PATH));
exit;
}
}
} catch (FacebookRequestException $ex) {
echo $ex;
} catch (Exception $ex) {
// When validation fails or other local issues
}
}
/**
* Validates the imported data.
*/
function validate_data($users_courses)
{
$errors = array();
$coursecodes = array();
foreach ($users_courses as $index => $user_course) {
$user_course['line'] = $index + 1;
// 1. Check whether mandatory fields are set.
$mandatory_fields = array('Email', 'CourseCode', 'Status');
foreach ($mandatory_fields as $key => $field) {
if (!isset($user_course[$field]) || strlen($user_course[$field]) == 0) {
$user_course['error'] = get_lang($field . 'Mandatory');
$errors[] = $user_course;
}
}
// 2. Check whether coursecode exists.
if (isset($user_course['CourseCode']) && strlen($user_course['CourseCode']) != 0) {
// 2.1 Check whethher code has been allready used by this CVS-file.
if (!isset($coursecodes[$user_course['CourseCode']])) {
// 2.1.1 Check whether course with this code exists in the system.
$course_table = Database::get_main_table(TABLE_MAIN_COURSE);
$sql = "SELECT * FROM {$course_table}\n WHERE code = '" . Database::escape_string($user_course['CourseCode']) . "'";
$res = Database::query($sql);
if (Database::num_rows($res) == 0) {
$user_course['error'] = get_lang('CodeDoesNotExists');
$errors[] = $user_course;
} else {
$coursecodes[$user_course['CourseCode']] = 1;
}
}
}
// 3. Check whether Email exists.
if (isset($user_course['Email']) && strlen($user_course['Email']) != 0) {
$user = api_get_user_info_from_email($user_course['Email']);
if (empty($user)) {
$user_course['error'] = get_lang('UnknownUser');
$errors[] = $user_course;
}
}
// 4. Check whether status is valid.
if (isset($user_course['Status']) && strlen($user_course['Status']) != 0) {
if ($user_course['Status'] != COURSEMANAGER && $user_course['Status'] != STUDENT) {
$user_course['error'] = get_lang('UnknownStatus');
$errors[] = $user_course;
}
}
}
return $errors;
}
/**
* @param array $users
* @param bool $checkUniqueEmail
* @return array
*/
function validate_data($users, $checkUniqueEmail = false)
{
global $defined_auth_sources;
$errors = array();
$usernames = array();
// 1. Check if mandatory fields are set.
$mandatory_fields = array('LastName', 'FirstName');
if (api_get_setting('registration', 'email') == 'true' || $checkUniqueEmail) {
$mandatory_fields[] = 'Email';
}
$classExistList = array();
$usergroup = new UserGroup();
foreach ($users as $user) {
foreach ($mandatory_fields as $field) {
if (empty($user[$field])) {
$user['error'] = get_lang($field . 'Mandatory');
$errors[] = $user;
}
}
$username = $user['UserName'];
// 2. Check username, first, check whether it is empty.
if (!UserManager::is_username_empty($username)) {
// 2.1. Check whether username is too long.
if (UserManager::is_username_too_long($username)) {
$user['error'] = get_lang('UserNameTooLong');
$errors[] = $user;
}
// 2.1.1
$hasDash = strpos($username, '-');
if ($hasDash !== false) {
$user['error'] = get_lang('UserNameHasDash');
$errors[] = $user;
}
// 2.2. Check whether the username was used twice in import file.
if (isset($usernames[$user['UserName']])) {
$user['error'] = get_lang('UserNameUsedTwice');
$errors[] = $user;
}
$usernames[$user['UserName']] = 1;
// 2.3. Check whether username is already occupied.
if (!UserManager::is_username_available($user['UserName'])) {
$user['error'] = get_lang('UserNameNotAvailable');
$errors[] = $user;
}
}
if ($checkUniqueEmail) {
if (isset($user['Email'])) {
$userFromEmail = api_get_user_info_from_email($user['Email']);
if (!empty($userFromEmail)) {
$user['error'] = get_lang('EmailUsedTwice');
$errors[] = $user;
}
}
}
// 3. Check status.
if (isset($user['Status']) && !api_status_exists($user['Status'])) {
$user['error'] = get_lang('WrongStatus');
$errors[] = $user;
}
// 4. Check ClassId
if (!empty($user['ClassId'])) {
$classId = explode('|', trim($user['ClassId']));
foreach ($classId as $id) {
if (in_array($id, $classExistList)) {
continue;
}
$info = $usergroup->get($id);
if (empty($info)) {
$user['error'] = sprintf(get_lang('ClassIdDoesntExists'), $id);
$errors[] = $user;
} else {
$classExistList[] = $info['id'];
}
}
}
// 5. Check authentication source
if (!empty($user['AuthSource'])) {
if (!in_array($user['AuthSource'], $defined_auth_sources)) {
$user['error'] = get_lang('AuthSourceNotAvailable');
$errors[] = $user;
}
}
}
return $errors;
}
