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<?php
namespace Sabre\DAV\Auth\Backend;
/**
* This is an authentication backend that uses a database to manage passwords.
*
* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
class PDOBasicAuth extends AbstractBasic
{
/**
* Reference to PDO connection.
*
* @var PDO
*/
protected $pdo;
/**
* PDO table name we'll be using.
*
* @var string
*/
protected $tableName;
/**
* PDO digest column name we'll be using
* (i.e. digest, password, password_hash).
*
* @var string
*/
protected $digestColumn;
/**
* PDO uuid(unique user identifier) column name we'll be using
* (i.e. username, email).
*
* @var string
*/
protected $uuidColumn;
/**
* Digest prefix:
* if the backend you are using for is prefixing
* your password hashes set this option to your prefix to
* cut it off before verfiying.
*
* @var string
*/
protected $digestPrefix;
/**
* Creates the backend object.
*
* If the filename argument is passed in, it will parse out the specified file fist.
*/
public function __construct(\PDO $pdo, array $options = [])
{
$this->pdo = $pdo;
if (isset($options['tableName'])) {
$this->tableName = $options['tableName'];
} else {
$this->tableName = 'users';
}
if (isset($options['digestColumn'])) {
$this->digestColumn = $options['digestColumn'];
} else {
$this->digestColumn = 'digest';
}
if (isset($options['uuidColumn'])) {
$this->uuidColumn = $options['uuidColumn'];
} else {
$this->uuidColumn = 'username';
}
if (isset($options['digestPrefix'])) {
$this->digestPrefix = $options['digestPrefix'];
}
}
/**
* Validates a username and password.
*
* This method should return true or false depending on if login
* succeeded.
*
* @param string $username
* @param string $password
*
* @return bool
*/
public function validateUserPass($username, $password)
{
$stmt = $this->pdo->prepare('SELECT '.$this->digestColumn.' FROM '.$this->tableName.' WHERE '.$this->uuidColumn.' = ?');
$stmt->execute([$username]);
$result = $stmt->fetchAll();
if (!count($result)) {
return false;
} else {
$digest = $result[0][$this->digestColumn];
if (isset($this->digestPrefix)) {
$digest = substr($digest, strlen($this->digestPrefix));
}
if (password_verify($password, $digest)) {
return true;
}
return false;
}
}
}
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