Your IP : 216.73.216.43
<?php
namespace Laminas\Mail\Protocol\Smtp\Auth;
use Laminas\Mail\Exception\InvalidArgumentException;
use Laminas\Mail\Protocol\Smtp;
use function array_replace_recursive;
use function base64_decode;
use function base64_encode;
use function hash_hmac;
use function is_array;
use function is_string;
/**
* Performs CRAM-MD5 authentication
*/
class Crammd5 extends Smtp
{
/** @var non-empty-string|null */
protected $username;
/** @var non-empty-string|null */
protected $password;
/**
* All parameters may be passed as an array to the first argument of the
* constructor. If so,
*
* @param string|array $host (Default: 127.0.0.1)
* @param null|int $port (Default: null)
* @param null|array $config Auth-specific parameters
*/
public function __construct($host = '127.0.0.1', $port = null, $config = null)
{
// Did we receive a configuration array?
$config = $config ?? [];
$origConfig = $config;
if (is_array($host)) {
// Merge config array with principal array, if provided
$config = array_replace_recursive($host, $config);
}
if (isset($config['username'])) {
$this->setUsername($config['username']);
}
if (isset($config['password'])) {
$this->setPassword($config['password']);
}
// Call parent with original arguments
parent::__construct($host, $port, $origConfig);
}
/**
* Performs CRAM-MD5 authentication with supplied credentials
*/
public function auth()
{
// Ensure AUTH has not already been initiated.
parent::auth();
$this->_send('AUTH CRAM-MD5');
$challenge = $this->_expect(334);
$challenge = base64_decode($challenge);
$digest = $this->hmacMd5($this->getPassword(), $challenge);
$this->_send(base64_encode($this->getUsername() . ' ' . $digest));
$this->_expect(235);
$this->auth = true;
}
/**
* Set value for username
*
* @param non-empty-string $username
* @return Crammd5
*/
public function setUsername($username)
{
$this->username = $username;
return $this;
}
/**
* Get username
*
* @return non-empty-string|null
*/
public function getUsername()
{
return $this->username;
}
/**
* Set value for password
*
* @param non-empty-string $password
* @return Crammd5
*/
public function setPassword($password)
{
$this->password = $password;
return $this;
}
/**
* Get password
*
* @return non-empty-string|null
*/
public function getPassword()
{
return $this->password;
}
/**
* Prepare CRAM-MD5 response to server's ticket
*
* @param non-empty-string $key Challenge key (usually password)
* @param non-empty-string $data Challenge data
* @param int $block Length of blocks (deprecated; unused)
* @return string
*/
protected function hmacMd5($key, $data, /** @deprecated */ $block = 64)
{
if (! is_string($key) || $key === '') {
throw new InvalidArgumentException('CramMD5 authentication requires a non-empty password');
}
if (! is_string($data) || $data === '') {
throw new InvalidArgumentException('CramMD5 authentication requires a non-empty challenge');
}
return hash_hmac('md5', $data, $key, false);
}
}