/**
* Perform the necessary actions to send a password reset mail
*
* @param $user_name_or_email string Username or user's email
*
* @return bool success status
*/
public static function requestPasswordReset($user_name_or_email)
{
if (empty($user_name_or_email)) {
Session::add('feedback_negative', Text::get('FEEDBACK_USERNAME_EMAIL_FIELD_EMPTY'));
return false;
}
// check if that username exists
$result = UserModel::getUserDataByUserNameOrEmail($user_name_or_email);
if (!$result) {
Session::add('feedback_negative', Text::get('FEEDBACK_USER_DOES_NOT_EXIST'));
return false;
}
// generate integer-timestamp (to see when exactly the user (or an attacker) requested the password reset mail)
// generate random hash for email password reset verification (40 char string)
$temporary_timestamp = time();
$user_password_reset_hash = sha1(uniqid(mt_rand(), true));
// set token (= a random hash string and a timestamp) into database ...
$token_set = self::setPasswordResetDatabaseToken($result->user_name, $user_password_reset_hash, $temporary_timestamp);
if (!$token_set) {
return false;
}
// ... and send a mail to the user, containing a link with username and token hash string
$mail_sent = self::sendPasswordResetMail($result->user_name, $user_password_reset_hash, $result->user_email);
if ($mail_sent) {
return true;
}
// default return
return false;
}
/**
* performs the login via cookie (for DEFAULT user account, FACEBOOK-accounts are handled differently)
* TODO add throttling here ?
*
* @param $cookie string The cookie "remember_me"
*
* @return bool success state
*/
public static function loginWithCookie($cookie)
{
if (!$cookie) {
Session::add('feedback_negative', Text::get('FEEDBACK_COOKIE_INVALID'));
return false;
}
// check cookie's contents, check if cookie contents belong together or token is empty
list($user_id, $token, $hash) = explode(':', $cookie);
if ($hash !== hash('sha256', $user_id . ':' . $token) or empty($token)) {
Session::add('feedback_negative', Text::get('FEEDBACK_COOKIE_INVALID'));
return false;
}
// get data of user that has this id and this token
$result = UserModel::getUserDataByUserIdAndToken($user_id, $token);
if ($result) {
// successfully logged in, so we write all necessary data into the session and set "user_logged_in" to true
self::setSuccessfulLoginIntoSession($result->user_id, $result->user_name, $result->user_email, $result->user_account_type);
// save timestamp of this login in the database line of that user
self::saveTimestampOfLoginOfUser($result->user_name);
Session::add('feedback_positive', Text::get('FEEDBACK_COOKIE_LOGIN_SUCCESSFUL'));
return true;
} else {
Session::add('feedback_negative', Text::get('FEEDBACK_COOKIE_INVALID'));
return false;
}
}
/**
* Edit the user's email
*
* @param $new_user_email
*
* @return bool success status
*/
public static function editUserEmail($new_user_email)
{
// email provided ?
if (empty($new_user_email)) {
Session::add('feedback_negative', Text::get('FEEDBACK_EMAIL_FIELD_EMPTY'));
return false;
}
// check if new email is same like the old one
if ($new_user_email == Session::get('user_email')) {
Session::add('feedback_negative', Text::get('FEEDBACK_EMAIL_SAME_AS_OLD_ONE'));
return false;
}
// user's email must be in valid email format, also checks the length
// @see http://stackoverflow.com/questions/21631366/php-filter-validate-email-max-length
// @see http://stackoverflow.com/questions/386294/what-is-the-maximum-length-of-a-valid-email-address
if (!filter_var($new_user_email, FILTER_VALIDATE_EMAIL)) {
Session::add('feedback_negative', Text::get('FEEDBACK_EMAIL_DOES_NOT_FIT_PATTERN'));
return false;
}
// strip tags, just to be sure
$new_user_email = substr(strip_tags($new_user_email), 0, 254);
// check if user's email already exists
if (UserModel::doesEmailAlreadyExist($new_user_email)) {
Session::add('feedback_negative', Text::get('FEEDBACK_USER_EMAIL_ALREADY_TAKEN'));
return false;
}
// write to database, if successful ...
// ... then write new email to session, Gravatar too (as this relies to the user's email address)
if (UserModel::saveNewEmailAddress(Session::get('user_id'), $new_user_email)) {
Session::set('user_email', $new_user_email);
Session::set('user_gravatar_image_url', AvatarModel::getGravatarLinkByEmail($new_user_email));
Session::add('feedback_positive', Text::get('FEEDBACK_EMAIL_CHANGE_SUCCESSFUL'));
return true;
}
Session::add('feedback_negative', Text::get('FEEDBACK_UNKNOWN_ERROR'));
return false;
}
