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Auth.php
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<?php
namespace PHPAuth;
use ZxcvbnPhp\Zxcvbn;
use PHPMailer;
/**
* Auth class
* Required PHP 5.4 and above.
*/
class Auth
{
protected $dbh;
public $config;
public $lang;
protected $islogged = NULL;
protected $currentuser = NULL;
/**
* Initiates database connection
*/
public function __construct(\PDO $dbh, $config, $language = "en_GB")
{
$this->dbh = $dbh;
$this->config = $config;
if (version_compare(phpversion(), '5.4.0', '<')) {
die('PHP 5.4.0 required for PHPAuth engine!');
}
if (version_compare(phpversion(), '5.5.0', '<')) {
require("files/password.php");
}
// Load language
require "languages/{$language}.php";
$this->lang = $lang;
date_default_timezone_set($this->config->site_timezone);
}
/**
* Logs a user in
* @param string $email
* @param string $password
* @param int $remember
* @param string $captcha = NULL
* @return array $return
*/
public function login($email, $password, $remember = 0, $captcha = NULL)
{
$return['error'] = true;
$block_status = $this->isBlocked();
if ($block_status == "verify") {
if ($this->checkCaptcha($captcha) == false) {
$return['message'] = $this->lang["user_verify_failed"];
return $return;
}
}
if ($block_status == "block") {
$return['message'] = $this->lang["user_blocked"];
return $return;
}
$validateEmail = $this->validateEmail($email);
$validatePassword = $this->validatePassword($password);
if ($validateEmail['error'] == 1) {
$this->addAttempt();
$return['message'] = $this->lang["email_password_invalid"];
return $return;
} elseif ($validatePassword['error'] == 1) {
$this->addAttempt();
$return['message'] = $this->lang["email_password_invalid"];
return $return;
} elseif ($remember != 0 && $remember != 1) {
$this->addAttempt();
$return['message'] = $this->lang["remember_me_invalid"];
return $return;
}
$uid = $this->getUID(strtolower($email));
if (!$uid) {
$this->addAttempt();
$return['message'] = $this->lang["email_password_incorrect"];
return $return;
}
$user = $this->getBaseUser($uid);
if (!password_verify($password, $user['password'])) {
$this->addAttempt();
$return['message'] = $this->lang["email_password_incorrect"];
return $return;
}
if ($user['isactive'] != 1) {
$this->addAttempt();
$return['message'] = $this->lang["account_inactive"];
return $return;
}
$sessiondata = $this->addSession($user['uid'], $remember);
if ($sessiondata == false) {
$return['message'] = $this->lang["system_error"] . " #01";
return $return;
}
$return['error'] = false;
$return['message'] = $this->lang["logged_in"];
$return['hash'] = $sessiondata['hash'];
$return['expire'] = $sessiondata['expire'];
$return['cookie_name'] = $this->config->cookie_name;
return $return;
}
/**
* Creates a new user, adds them to database
* @param string $email
* @param string $password
* @param string $repeatpassword
* @param array $params
* @param string $captcha = NULL
* @param bool $sendmail = NULL
* @return array $return
*/
public function register($email, $password, $repeatpassword, $params = Array(), $captcha = NULL, $sendmail = NULL)
{
$return['error'] = true;
$block_status = $this->isBlocked();
if ($block_status == "verify") {
if ($this->checkCaptcha($captcha) == false) {
$return['message'] = $this->lang["user_verify_failed"];
return $return;
}
}
if ($block_status == "block") {
$return['message'] = $this->lang["user_blocked"];
return $return;
}
if ($password !== $repeatpassword) {
$return['message'] = $this->lang["password_nomatch"];
return $return;
}
// Validate email
$validateEmail = $this->validateEmail($email);
if ($validateEmail['error'] == 1) {
$return['message'] = $validateEmail['message'];
return $return;
}
// Validate password
$validatePassword = $this->validatePassword($password);
if ($validatePassword['error'] == 1) {
$return['message'] = $validatePassword['message'];
return $return;
}
$zxcvbn = new Zxcvbn();
if ($zxcvbn->passwordStrength($password)['score'] < intval($this->config->password_min_score)) {
$return['message'] = $this->lang['password_weak'];
return $return;
}
if ($this->isEmailTaken($email)) {
$this->addAttempt();
$return['message'] = $this->lang["email_taken"];
return $return;
}
$addUser = $this->addUser($email, $password, $params, $sendmail);
if ($addUser['error'] != 0) {
$return['message'] = $addUser['message'];
return $return;
}
$return['error'] = false;
$return['message'] = ($sendmail == true ? $this->lang["register_success"] : $this->lang['register_success_emailmessage_suppressed'] );
return $return;
}
/**
* Activates a user's account
* @param string $key
* @return array $return
*/
public function activate($key)
{
$return['error'] = true;
$block_status = $this->isBlocked();
if ($block_status == "block") {
$return['message'] = $this->lang["user_blocked"];
return $return;
}
if (strlen($key) !== 20) {
$this->addAttempt();
$return['message'] = $this->lang["activationkey_invalid"];
return $return;
}
$getRequest = $this->getRequest($key, "activation");
if ($getRequest['error'] == 1) {
$return['message'] = $getRequest['message'];
return $return;
}
if ($this->getBaseUser($getRequest['uid'])['isactive'] == 1) {
$this->addAttempt();
$this->deleteRequest($getRequest['id']);
$return['message'] = $this->lang["system_error"] . " #02";
return $return;
}
$query = $this->dbh->prepare("UPDATE {$this->config->table_users} SET isactive = ? WHERE id = ?");
$query->execute(array(1, $getRequest['uid']));
$this->deleteRequest($getRequest['id']);
$return['error'] = false;
$return['message'] = $this->lang["account_activated"];
return $return;
}
/**
* Creates a reset key for an email address and sends email
* @param string $email
* @return array $return
*/
public function requestReset($email, $sendmail = NULL)
{
$return['error'] = true;
$block_status = $this->isBlocked();
if ($block_status == "block") {
$return['message'] = $this->lang["user_blocked"];
return $return;
}
$validateEmail = $this->validateEmail($email);
if ($validateEmail['error'] == 1) {
$return['message'] = $this->lang["email_invalid"];
return $return;
}
$query = $this->dbh->prepare("SELECT id FROM {$this->config->table_users} WHERE email = ?");
$query->execute(array($email));
if (!$row = $query->fetch(\PDO::FETCH_ASSOC)) {
$this->addAttempt();
$return['message'] = $this->lang["email_incorrect"];
return $return;
}
$addRequest = $this->addRequest($row['id'], $email, "reset", $sendmail);
if ($addRequest['error'] == 1) {
$this->addAttempt();
$return['message'] = $addRequest['message'];
return $return;
}
$return['error'] = false;
$return['message'] = ($sendmail == true ? $this->lang["reset_requested"] : $this->lang['reset_requested_emailmessage_suppressed']);
return $return;
}
/**
* Logs out the session, identified by hash
* @param string $hash
* @return boolean
*/
public function logout($hash)
{
if (strlen($hash) != 40) {
return false;
}
return $this->deleteSession($hash);
}
/**
* Hashes provided password with Bcrypt
* @param string $password
* @param string $password
* @return string
*/
public function getHash($password)
{
return password_hash($password, PASSWORD_BCRYPT, ['cost' => $this->config->bcrypt_cost]);
}
/**
* Gets UID for a given email address and returns an array
* @param string $email
* @return array $uid
*/
public function getUID($email)
{
$query = $this->dbh->prepare("SELECT id FROM {$this->config->table_users} WHERE email = ?");
$query->execute(array($email));
if(!$row = $query->fetch(\PDO::FETCH_ASSOC)) {
return false;
}
return $row['id'];
}
/**
* Creates a session for a specified user id
* @param int $uid
* @param boolean $remember
* @return array $data
*/
protected function addSession($uid, $remember)
{
$ip = $this->getIp();
$user = $this->getBaseUser($uid);
if (!$user) {
return false;
}
$data['hash'] = sha1($this->config->site_key . microtime());
$agent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : '';
$this->deleteExistingSessions($uid);
if ($remember == true) {
$data['expire'] = strtotime($this->config->cookie_remember);
} else {
$data['expire'] = strtotime($this->config->cookie_forget);
}
$data['cookie_crc'] = sha1($data['hash'] . $this->config->site_key);
$query = $this->dbh->prepare("INSERT INTO {$this->config->table_sessions} (uid, hash, expiredate, ip, agent, cookie_crc) VALUES (?, ?, ?, ?, ?, ?)");
if (!$query->execute(array($uid, $data['hash'], date("Y-m-d H:i:s", $data['expire']), $ip, $agent, $data['cookie_crc']))) {
return false;
}
setcookie($this->config->cookie_name, $data['hash'], $data['expire'], $this->config->cookie_path, $this->config->cookie_domain, $this->config->cookie_secure, $this->config->cookie_http);
$_COOKIE[$this->config->cookie_name] = $data['hash'];
return $data;
}
/**
* Removes all existing sessions for a given UID
* @param int $uid
* @return boolean
*/
protected function deleteExistingSessions($uid)
{
$query = $this->dbh->prepare("DELETE FROM {$this->config->table_sessions} WHERE uid = ?");
$query->execute(array($uid));
return $query->rowCount() == 1;
}
/**
* Removes a session based on hash
* @param string $hash
* @return boolean
*/
protected function deleteSession($hash)
{
$query = $this->dbh->prepare("DELETE FROM {$this->config->table_sessions} WHERE hash = ?");
$query->execute(array($hash));
return $query->rowCount() == 1;
}
/**
* Function to check if a session is valid
* @param string $hash
* @return boolean
*/
public function checkSession($hash)
{
$ip = $this->getIp();
$block_status = $this->isBlocked();
if ($block_status == "block") {
$return['message'] = $this->lang["user_blocked"];
return false;
}
if (strlen($hash) != 40) {
return false;
}
$query = $this->dbh->prepare("SELECT id, uid, expiredate, ip, agent, cookie_crc FROM {$this->config->table_sessions} WHERE hash = ?");
$query->execute(array($hash));
if (!$row = $query->fetch(\PDO::FETCH_ASSOC)) {
return false;
}
$sid = $row['id'];
$uid = $row['uid'];
$expiredate = strtotime($row['expiredate']);
$currentdate = strtotime(date("Y-m-d H:i:s"));
$db_ip = $row['ip'];
$db_agent = $row['agent'];
$db_cookie = $row['cookie_crc'];
if ($currentdate > $expiredate) {
$this->deleteExistingSessions($uid);
return false;
}
if ($ip != $db_ip) {
return false;
}
if ($db_cookie == sha1($hash . $this->config->site_key)) {
return true;
}
return false;
}
/**
* Retrieves the UID associated with a given session hash
* @param string $hash
* @return int $uid
*/
public function getSessionUID($hash)
{
$query = $this->dbh->prepare("SELECT uid FROM {$this->config->table_sessions} WHERE hash = ?");
$query->execute(array($hash));
if (!$row = $query->fetch(\PDO::FETCH_ASSOC)) {
return false;
}
return $row['uid'];
}
/**
* Checks if an email is already in use
* @param string $email
* @return boolean
*/
public function isEmailTaken($email)
{
$query = $this->dbh->prepare("SELECT count(*) FROM {$this->config->table_users} WHERE email = ?");
$query->execute(array($email));
if ($query->fetchColumn() == 0) {
return false;
}
return true;
}
/**
* Adds a new user to database
* @param string $email -- email
* @param string $password -- password
* @param array $params -- additional params
* @param boolean $sendmail -- activate email confirm or not
* @return int $uid
*/
protected function addUser($email, $password, $params = array(), &$sendmail)
{
$return['error'] = true;
$query = $this->dbh->prepare("INSERT INTO {$this->config->table_users} (isactive) VALUES (0)");
if (!$query->execute()) {
$return['message'] = $this->lang["system_error"] . " #03";
return $return;
}
$uid = $this->dbh->lastInsertId("{$this->config->table_users}_id_seq");
$email = htmlentities(strtolower($email));
if ($sendmail) {
$addRequest = $this->addRequest($uid, $email, "activation", $sendmail);
if ($addRequest['error'] == 1) {
$query = $this->dbh->prepare("DELETE FROM {$this->config->table_users} WHERE id = ?");
$query->execute(array($uid));
$return['message'] = $addRequest['message'];
return $return;
}
$isactive = 0;
} else {
$isactive = 1;
}
$password = $this->getHash($password);
if (is_array($params)&& count($params) > 0) {
$customParamsQueryArray = Array();
foreach($params as $paramKey => $paramValue) {
$customParamsQueryArray[] = array('value' => $paramKey . ' = ?');
}
$setParams = ', ' . implode(', ', array_map(function ($entry) {
return $entry['value'];
}, $customParamsQueryArray));
} else { $setParams = ''; }
$query = $this->dbh->prepare("UPDATE {$this->config->table_users} SET email = ?, password = ?, isactive = ? {$setParams} WHERE id = ?");
$bindParams = array_values(array_merge(array($email, $password, $isactive), $params, array($uid)));
if (!$query->execute($bindParams)) {
$query = $this->dbh->prepare("DELETE FROM {$this->config->table_users} WHERE id = ?");
$query->execute(array($uid));
$return['message'] = $this->lang["system_error"] . " #04";
return $return;
}
$return['error'] = false;
return $return;
}
/**
* Gets basic user data for a given UID and returns an array
* @param int $uid
* @return array $data
*/
protected function getBaseUser($uid)
{
$query = $this->dbh->prepare("SELECT email, password, isactive FROM {$this->config->table_users} WHERE id = ?");
$query->execute(array($uid));
$data = $query->fetch(\PDO::FETCH_ASSOC);
if (!$data) {
return false;
}
$data['uid'] = $uid;
return $data;
}
/**
* Gets public user data for a given UID and returns an array, password is not returned
* @param int $uid
* @return array $data
*/
public function getUser($uid)
{
$query = $this->dbh->prepare("SELECT * FROM {$this->config->table_users} WHERE id = ?");
$query->execute(array($uid));
$data = $query->fetch(\PDO::FETCH_ASSOC);
if (!$data) {
return false;
}
$data['uid'] = $uid;
unset($data['password']);
return $data;
}
/**
* Allows a user to delete their account
* @param int $uid
* @param string $password
* @param string $captcha = NULL
* @return array $return
*/
public function deleteUser($uid, $password, $captcha = NULL)
{
$return['error'] = true;
$block_status = $this->isBlocked();
if ($block_status == "verify") {
if ($this->checkCaptcha($captcha) == false) {
$return['message'] = $this->lang["user_verify_failed"];
return $return;
}
}
if ($block_status == "block") {
$return['message'] = $this->lang["user_blocked"];
return $return;
}
$validatePassword = $this->validatePassword($password);
if ($validatePassword['error'] == 1) {
$this->addAttempt();
$return['message'] = $validatePassword['message'];
return $return;
}
$user = $this->getBaseUser($uid);
if (!password_verify($password, $user['password'])) {
$this->addAttempt();
$return['message'] = $this->lang["password_incorrect"];
return $return;
}
$query = $this->dbh->prepare("DELETE FROM {$this->config->table_users} WHERE id = ?");
if (!$query->execute(array($uid))) {
$return['message'] = $this->lang["system_error"] . " #05";
return $return;
}
$query = $this->dbh->prepare("DELETE FROM {$this->config->table_sessions} WHERE uid = ?");
if (!$query->execute(array($uid))) {
$return['message'] = $this->lang["system_error"] . " #06";
return $return;
}
$query = $this->dbh->prepare("DELETE FROM {$this->config->table_requests} WHERE uid = ?");
if (!$query->execute(array($uid))) {
$return['message'] = $this->lang["system_error"] . " #07";
return $return;
}
$return['error'] = false;
$return['message'] = $this->lang["account_deleted"];
return $return;
}
/**
* Creates an activation entry and sends email to user
* @param int $uid
* @param string $email
* @param string $type
* @param boolean $sendmail
* @return boolean
*/
protected function addRequest($uid, $email, $type, &$sendmail)
{
$return['error'] = true;
if ($type != "activation" && $type != "reset") {
$return['message'] = $this->lang["system_error"] . " #08";
return $return;
}
// if not set manually, check config data
if ($sendmail === NULL) {
$sendmail = true;
if ($type == "reset" && $this->config->emailmessage_suppress_reset === true ) {
$sendmail = false;
$return['error'] = false;
return $return;
}
if ($type == "activation" && $this->config->emailmessage_suppress_activation === true ) {
$sendmail = false;
$return['error'] = false;
return $return;
}
}
$query = $this->dbh->prepare("SELECT id, expire FROM {$this->config->table_requests} WHERE uid = ? AND type = ?");
$query->execute(array($uid, $type));
if ($row = $query->fetch(\PDO::FETCH_ASSOC)) {
$expiredate = strtotime($row['expire']);
$currentdate = strtotime(date("Y-m-d H:i:s"));
if ($currentdate < $expiredate) {
$return['message'] = $this->lang["reset_exists"];
return $return;
}
$this->deleteRequest($row['id']);
}
if ($type == "activation" && $this->getBaseUser($uid)['isactive'] == 1) {
$return['message'] = $this->lang["already_activated"];
return $return;
}
$key = $this->getRandomKey(20);
$expire = date("Y-m-d H:i:s", strtotime($this->config->request_key_expiration));
$query = $this->dbh->prepare("INSERT INTO {$this->config->table_requests} (uid, rkey, expire, type) VALUES (?, ?, ?, ?)");
if (!$query->execute(array($uid, $key, $expire, $type))) {
$return['message'] = $this->lang["system_error"] . " #09";
return $return;
}
$request_id = $this->dbh->lastInsertId();
if ($sendmail === true) {
// Check configuration for SMTP parameters
$mail = new PHPMailer;
$mail->CharSet = $this->config->mail_charset;
if ($this->config->smtp) {
$mail->isSMTP();
$mail->Host = $this->config->smtp_host;
$mail->SMTPAuth = $this->config->smtp_auth;
if (!is_null($this->config->smtp_auth)) {
$mail->Username = $this->config->smtp_username;
$mail->Password = $this->config->smtp_password;
}
$mail->Port = $this->config->smtp_port;
if (!is_null($this->config->smtp_security)) {
$mail->SMTPSecure = $this->config->smtp_security;
}
}
$mail->From = $this->config->site_email;
$mail->FromName = $this->config->site_name;
$mail->addAddress($email);
$mail->isHTML(true);
if ($type == "activation") {
$mail->Subject = sprintf($this->lang['email_activation_subject'], $this->config->site_name);
$mail->Body = sprintf($this->lang['email_activation_body'], $this->config->site_url, $this->config->site_activation_page, $key);
$mail->AltBody = sprintf($this->lang['email_activation_altbody'], $this->config->site_url, $this->config->site_activation_page, $key);
} else {
$mail->Subject = sprintf($this->lang['email_reset_subject'], $this->config->site_name);
$mail->Body = sprintf($this->lang['email_reset_body'], $this->config->site_url, $this->config->site_password_reset_page, $key);
$mail->AltBody = sprintf($this->lang['email_reset_altbody'], $this->config->site_url, $this->config->site_password_reset_page, $key);
}
if (!$mail->send()) {
$this->deleteRequest($request_id);
$return['message'] = $this->lang["system_error"] . " #10";
return $return;
}
}
$return['error'] = false;
return $return;
}
/**
* Returns request data if key is valid
* @param string $key
* @param string $type
* @return array $return
*/
public function getRequest($key, $type)
{
$return['error'] = true;
$query = $this->dbh->prepare("SELECT id, uid, expire FROM {$this->config->table_requests} WHERE rkey = ? AND type = ?");
$query->execute(array($key, $type));
if (!$row = $query->fetch(\PDO::FETCH_ASSOC)) {
$this->addAttempt();
$return['message'] = $this->lang[$type."key_incorrect"];
return $return;
}
$expiredate = strtotime($row['expire']);
$currentdate = strtotime(date("Y-m-d H:i:s"));
if ($currentdate > $expiredate) {
$this->addAttempt();
$this->deleteRequest($row['id']);
$return['message'] = $this->lang[$type."key_expired"];
return $return;
}
$return['error'] = false;
$return['id'] = $row['id'];
$return['uid'] = $row['uid'];
return $return;
}
/**
* Deletes request from database
* @param int $id
* @return boolean
*/
protected function deleteRequest($id)
{
$query = $this->dbh->prepare("DELETE FROM {$this->config->table_requests} WHERE id = ?");
return $query->execute(array($id));
}
/**
* Verifies that a password is valid and respects security requirements
* @param string $password
* @return array $return
*/
protected function validatePassword($password) {
$return['error'] = true;
if (strlen($password) < (int)$this->config->verify_password_min_length ) {
$return['message'] = $this->lang["password_short"];
return $return;
}
$return['error'] = false;
return $return;
}
/**
* Verifies that an email is valid
* @param string $email
* @return array $return
*/
protected function validateEmail($email) {
$return['error'] = true;
if (strlen($email) < (int)$this->config->verify_email_min_length ) {
$return['message'] = $this->lang["email_short"];
return $return;
} elseif (strlen($email) > (int)$this->config->verify_email_max_length ) {
$return['message'] = $this->lang["email_long"];
return $return;
} elseif (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
$return['message'] = $this->lang["email_invalid"];
return $return;
}
if ( (int)$this->config->verify_email_use_banlist ) {
$bannedEmails = json_decode(file_get_contents(__DIR__ . "/files/domains.json"));
if (in_array(strtolower(explode('@', $email)[1]), $bannedEmails)) {
$return['message'] = $this->lang["email_banned"];
return $return;
}
}
$return['error'] = false;
return $return;
}
/**
* Allows a user to reset their password after requesting a reset key.
* @param string $key
* @param string $password
* @param string $repeatpassword
* @param string $captcha = NULL
* @return array $return
*/
public function resetPass($key, $password, $repeatpassword, $captcha = NULL)
{
$return['error'] = true;
$block_status = $this->isBlocked();
if ($block_status == "verify") {
if ($this->checkCaptcha($captcha) == false) {
$return['message'] = $this->lang["user_verify_failed"];
return $return;
}
}
if ($block_status == "block") {
$return['message'] = $this->lang["user_blocked"];
return $return;
}
if (strlen($key) != 20) {
$return['message'] = $this->lang["resetkey_invalid"];
return $return;
}
$validatePassword = $this->validatePassword($password);
if ($validatePassword['error'] == 1) {
$return['message'] = $validatePassword['message'];
return $return;
}
$zxcvbn = new Zxcvbn();
if ($zxcvbn->passwordStrength($password)['score'] < intval($this->config->password_min_score)) {
$return['message'] = $this->lang['password_weak'];
return $return;
}
if ($password !== $repeatpassword) {
// Passwords don't match
$return['message'] = $this->lang["newpassword_nomatch"];
return $return;
}