AuthMeReloaded/samples/website_integration/AuthMeController.php

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<?php
/*****************************************************************************
* AuthMe website integration logic *
* ------------------------------------------------------------------------- *
* Allows interaction with the AuthMe database (registration, password *
* verification). Don't forget to update the AUTHME_TABLE value and your *
* database credentials in getAuthmeMySqli(). *
* *
* Source: https://github.com/AuthMe/AuthMeReloaded/ *
*****************************************************************************/
abstract class AuthMeController {
const AUTHME_TABLE = 'authme';
/**
* Entry point function to check supplied credentials against the AuthMe database.
*
* @param string $username the username
* @param string $password the password
* @return bool true iff the data is correct, false otherwise
*/
function checkPassword($username, $password) {
if (is_scalar($username) && is_scalar($password)) {
$hash = $this->getHashFromDatabase($username);
if ($hash) {
return $this->isValidPassword($password, $hash);
}
}
return false;
}
/**
* Returns whether the user exists in the database or not.
*
* @param string $username the username to check
* @return bool true if the user exists; false otherwise
*/
function isUserRegistered($username) {
$mysqli = $this->getAuthmeMySqli();
if ($mysqli !== null) {
$stmt = $mysqli->prepare('SELECT 1 FROM ' . self::AUTHME_TABLE . ' WHERE username = ?');
$stmt->bind_param('s', $username);
$stmt->execute();
return $stmt->fetch();
}
// Defensive default to true; we actually don't know
return true;
}
/**
* Registers a player with the given username.
*
* @param string $username the username to register
* @param string $password the password to associate to the user
* @return bool whether or not the registration was successful
*/
function register($username, $password) {
$mysqli = $this->getAuthmeMySqli();
if ($mysqli !== null) {
$hash = $this->hash($password);
$stmt = $mysqli->prepare('INSERT INTO ' . self::AUTHME_TABLE . ' (username, realname, password, ip) '
. 'VALUES (?, ?, ?, ?)');
$username_low = strtolower($username);
$stmt->bind_param('ssss', $username, $username_low, $hash, $_SERVER['REMOTE_ADDR']);
return $stmt->execute();
}
return false;
}
/**
* Hashes the given password.
*
* @param $password string the clear-text password to hash
* @return string the resulting hash
*/
protected abstract function hash($password);
/**
* Checks whether the given password matches the hash.
*
* @param $password string the clear-text password
* @param $hash string the password hash
* @return boolean true if the password matches, false otherwise
*/
protected abstract function isValidPassword($password, $hash);
/**
* Returns a connection to the database.
*
* @return mysqli|null the mysqli object or null upon error
*/
private function getAuthmeMySqli() {
// CHANGE YOUR DATABASE DETAILS HERE BELOW: host, user, password, database name
$mysqli = new mysqli('localhost', 'root', '', 'authme');
if (mysqli_connect_error()) {
printf('Could not connect to AuthMe database. Errno: %d, error: "%s"',
mysqli_connect_errno(), mysqli_connect_error());
return null;
}
return $mysqli;
}
/**
* Retrieves the hash associated with the given user from the database.
*
* @param string $username the username whose hash should be retrieved
* @return string|null the hash, or null if unavailable (e.g. username doesn't exist)
*/
private function getHashFromDatabase($username) {
// Add here your database host, username, password and database name
$mysqli = $this->getAuthmeMySqli();
if ($mysqli !== null) {
$stmt = $mysqli->prepare('SELECT password FROM ' . self::AUTHME_TABLE . ' WHERE username = ?');
$stmt->bind_param('s', $username);
$stmt->execute();
$stmt->bind_result($password);
if ($stmt->fetch()) {
return $password;
}
}
return null;
}
}