284 lines
10 KiB
PHP
284 lines
10 KiB
PHP
<?php
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/**
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* Class RegistrationModel
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*
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* Everything registration-related happens here.
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*/
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class RegistrationModel
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{
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/**
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* Handles the entire registration process for DEFAULT users (not for people who register with
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* 3rd party services, like facebook) and creates a new user in the database if everything is fine
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*
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* @return boolean Gives back the success status of the registration
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*/
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public static function registerNewUser($isAdmin = false)
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{
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$user_name = strip_tags(Request::post('user_name'));
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$user_email = strip_tags(Request::post('user_email'));
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$user_password_new = Request::post('user_password_new');
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$user_password_repeat = $user_password_new;
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$valid = true;
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if (!self::validateRecaptcha()) { $valid = false; }
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if (!self::validateUserName($user_name)) { $valid = false; }
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if (!self::validateUserEmail($user_email, $user_email)) { $valid = false; }
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if (!self::validateUserPassword($user_password_new, $user_password_repeat)) { $valid = false; }
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if (!$valid) { return false; }
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// hash the password
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$user_password_hash = password_hash($user_password_new, PASSWORD_DEFAULT);
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$return = true;
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if (UserModel::doesUsernameAlreadyExist($user_name)) {
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Session::add('feedback_negative', Text::get('FEEDBACK_USERNAME_ALREADY_TAKEN'));
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$return = false;
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}
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if (UserModel::doesEmailAlreadyExist($user_email)) {
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Session::add('feedback_negative', Text::get('FEEDBACK_USER_EMAIL_ALREADY_TAKEN'));
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$return = false;
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}
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if (!$return) return false;
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// directly activate user: set empty activation hash
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$user_activation_hash = null;
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// write user data to database
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if (!self::writeNewUserToDatabase($user_name, $user_password_hash, $user_email, time(), $user_activation_hash)) {
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Session::add('feedback_negative', Text::get('FEEDBACK_ACCOUNT_CREATION_FAILED'));
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return false;
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}
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Session::add('feedback_positive', Text::get('FEEDBACK_ACCOUNT_SUCCESSFULLY_CREATED'));
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return true;
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}
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/**
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* Validates the registration input
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*
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* @param $user_name
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* @param $user_password_new
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* @param $user_email
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*
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* @return bool
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*/
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public static function registrationInputValidation($user_name, $user_password_new, $user_email)
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{
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$return = true;
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if (empty($user_name) || empty($user_password_new) || empty($user_email)) {
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Session::add('feedback_negative', Text::get('FEEDBACK_FIELDS_EMPTY'));
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$return = false;
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}
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return $return;
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}
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public static function validateRecaptcha()
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{
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$recaptcha_response = Request::post('g-recaptcha-response');
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if (empty($recaptcha_response)) {
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Session::add('feedback_negative', 'reCAPTCHA verification failed. Please try again.');
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return false;
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}
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$secret_key = Config::get('RECAPTCHA_SECRET_KEY');
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$verify_url = 'https://www.google.com/recaptcha/api/siteverify';
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$response = file_get_contents($verify_url . '?secret=' . $secret_key . '&response=' . $recaptcha_response);
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$response_data = json_decode($response);
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if (!$response_data->success) {
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Session::add('feedback_negative', 'reCAPTCHA verification failed. Please try again.');
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return false;
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}
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// v3 returns a score from 0.0 to 1.0 (1.0 = likely human, 0.0 = likely bot)
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if (isset($response_data->score) && $response_data->score < 0.5) {
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Session::add('feedback_negative', 'Registration blocked due to suspicious activity.');
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return false;
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}
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return true;
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}
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public static function validateUserName($user_name)
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{
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if (empty($user_name)) {
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Session::add('feedback_negative', Text::get('FEEDBACK_USERNAME_FIELD_EMPTY'));
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return false;
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}
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if (!preg_match('/^[a-zA-Z0-9]{2,64}$/', $user_name)) {
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Session::add('feedback_negative', Text::get('FEEDBACK_USERNAME_DOES_NOT_FIT_PATTERN'));
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return false;
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}
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return true;
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}
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/**
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* Validates the email
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*
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* @param $user_email
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* @param $user_email_repeat
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* @return bool
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*/
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public static function validateUserEmail($user_email, $user_email_repeat)
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{
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if (empty($user_email)) {
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Session::add('feedback_negative', Text::get('FEEDBACK_EMAIL_FIELD_EMPTY'));
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return false;
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}
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if ($user_email !== $user_email_repeat) {
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Session::add('feedback_negative', Text::get('FEEDBACK_EMAIL_REPEAT_WRONG'));
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return false;
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}
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// validate the email with PHP's internal filter
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// side-fact: Max length seems to be 254 chars
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// @see http://stackoverflow.com/questions/386294/what-is-the-maximum-length-of-a-valid-email-address
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if (!filter_var($user_email, FILTER_VALIDATE_EMAIL)) {
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Session::add('feedback_negative', Text::get('FEEDBACK_EMAIL_DOES_NOT_FIT_PATTERN'));
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return false;
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}
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return true;
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}
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/**
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* Validates the password
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*
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* @param $user_password_new
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* @param $user_password_repeat
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* @return bool
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*/
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public static function validateUserPassword($user_password_new, $user_password_repeat)
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{
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if (empty($user_password_new) OR empty($user_password_repeat)) {
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Session::add('feedback_negative', Text::get('FEEDBACK_PASSWORD_FIELD_EMPTY'));
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return false;
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}
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if ($user_password_new !== $user_password_repeat) {
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Session::add('feedback_negative', Text::get('FEEDBACK_PASSWORD_REPEAT_WRONG'));
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return false;
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}
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// no minimum length restriction
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return true;
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}
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/**
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* Writes the new user's data to the database
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*
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* @param $user_name
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* @param $user_password_hash
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* @param $user_email
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* @param $user_creation_timestamp
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* @param $user_activation_hash
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*
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* @return bool
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*/
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public static function writeNewUserToDatabase($user_name, $user_password_hash, $user_email, $user_creation_timestamp, $user_activation_hash)
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{
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$database = DatabaseFactory::getFactory()->getConnection();
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// write new users data into database; set user_active=1 and user_activation_hash to provided value (can be null)
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$sql = "INSERT INTO users (user_name, user_password_hash, user_email, user_creation_timestamp, user_activation_hash, user_provider_type, user_active)
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VALUES (:user_name, :user_password_hash, :user_email, :user_creation_timestamp, :user_activation_hash, :user_provider_type, 1)";
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$query = $database->prepare($sql);
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try {
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$query->execute(array(
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':user_name' => $user_name,
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':user_password_hash' => $user_password_hash,
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':user_email' => $user_email,
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':user_creation_timestamp' => $user_creation_timestamp,
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':user_activation_hash' => $user_activation_hash,
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':user_provider_type' => 'DEFAULT'
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));
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} catch (PDOException $e) {
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// only one feedback message on failure
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return false;
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}
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$count = $query->rowCount();
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if ($count == 1) {
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return true;
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}
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return false;
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}
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/**
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* Deletes the user from users table. Currently used to rollback a registration when verification mail sending
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* was not successful.
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*
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* @param $user_id
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*/
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public static function rollbackRegistrationByUserId($user_id)
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{
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$database = DatabaseFactory::getFactory()->getConnection();
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$query = $database->prepare("DELETE FROM users WHERE user_id = :user_id");
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$query->execute(array(':user_id' => $user_id));
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}
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/**
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* Sends the verification email (to confirm the account).
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* The construction of the mail $body looks weird at first, but it's really just a simple string.
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*
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* @param int $user_id user's id
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* @param string $user_email user's email
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* @param string $user_activation_hash user's mail verification hash string
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*
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* @return boolean gives back true if mail has been sent, gives back false if no mail could been sent
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*/
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public static function sendVerificationEmail($user_id, $user_email, $user_activation_hash)
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{
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$body = Config::get('EMAIL_VERIFICATION_CONTENT') . Config::get('URL') . Config::get('EMAIL_VERIFICATION_URL')
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. '/' . urlencode($user_id) . '/' . urlencode($user_activation_hash);
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$mail = new Mail;
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$mail_sent = $mail->sendMail($user_email, Config::get('EMAIL_VERIFICATION_FROM_EMAIL'),
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Config::get('EMAIL_VERIFICATION_FROM_NAME'), Config::get('EMAIL_VERIFICATION_SUBJECT'), $body
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);
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if ($mail_sent) {
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Session::add('feedback_positive', Text::get('FEEDBACK_VERIFICATION_MAIL_SENDING_SUCCESSFUL'));
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return true;
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} else {
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Session::add('feedback_negative', Text::get('FEEDBACK_VERIFICATION_MAIL_SENDING_ERROR') . $mail->getError() );
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return false;
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}
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}
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/**
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* checks the email/verification code combination and set the user's activation status to true in the database
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*
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* @param int $user_id user id
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* @param string $user_activation_verification_code verification token
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*
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* @return bool success status
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*/
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public static function verifyNewUser($user_id, $user_activation_verification_code)
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{
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$database = DatabaseFactory::getFactory()->getConnection();
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$sql = "UPDATE users SET user_active = 1, user_activation_hash = NULL
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WHERE user_id = :user_id AND user_activation_hash = :user_activation_hash LIMIT 1";
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$query = $database->prepare($sql);
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$query->execute(array(':user_id' => $user_id, ':user_activation_hash' => $user_activation_verification_code));
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if ($query->rowCount() == 1) {
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Session::add('feedback_positive', Text::get('FEEDBACK_ACCOUNT_ACTIVATION_SUCCESSFUL'));
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return true;
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}
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Session::add('feedback_negative', Text::get('FEEDBACK_ACCOUNT_ACTIVATION_FAILED'));
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return false;
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}
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}
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