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+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2004-2009 Chris Corbyn
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+//@require 'Swift/TransportException.php';
+//@require 'Swift/Transport/EsmtpHandler.php';
+//@require 'Swift/Transport/SmtpAgent.php';
+
+/**
+ * An ESMTP handler for AUTH support.
+ * @package Swift
+ * @subpackage Transport
+ * @author Chris Corbyn
+ */
+class Swift_Transport_Esmtp_AuthHandler implements Swift_Transport_EsmtpHandler
+{
+
+ /**
+ * Authenticators available to process the request.
+ * @var Swift_Transport_Esmtp_Authenticator[]
+ * @access private
+ */
+ private $_authenticators = array();
+
+ /**
+ * The username for authentication.
+ * @var string
+ * @access private
+ */
+ private $_username;
+
+ /**
+ * The password for authentication.
+ * @var string
+ * @access private
+ */
+ private $_password;
+
+ /**
+ * The auth mode for authentication.
+ * @var string
+ * @access private
+ */
+ private $_auth_mode;
+
+ /**
+ * The ESMTP AUTH parameters available.
+ * @var string[]
+ * @access private
+ */
+ private $_esmtpParams = array();
+
+ /**
+ * Create a new AuthHandler with $authenticators for support.
+ * @param Swift_Transport_Esmtp_Authenticator[] $authenticators
+ */
+ public function __construct(array $authenticators)
+ {
+ $this->setAuthenticators($authenticators);
+ }
+
+ /**
+ * Set the Authenticators which can process a login request.
+ * @param Swift_Transport_Esmtp_Authenticator[] $authenticators
+ */
+ public function setAuthenticators(array $authenticators)
+ {
+ $this->_authenticators = $authenticators;
+ }
+
+ /**
+ * Get the Authenticators which can process a login request.
+ * @return Swift_Transport_Esmtp_Authenticator[]
+ */
+ public function getAuthenticators()
+ {
+ return $this->_authenticators;
+ }
+
+ /**
+ * Set the username to authenticate with.
+ * @param string $username
+ */
+ public function setUsername($username)
+ {
+ $this->_username = $username;
+ }
+
+ /**
+ * Get the username to authenticate with.
+ * @return string
+ */
+ public function getUsername()
+ {
+ return $this->_username;
+ }
+
+ /**
+ * Set the password to authenticate with.
+ * @param string $password
+ */
+ public function setPassword($password)
+ {
+ $this->_password = $password;
+ }
+
+ /**
+ * Get the password to authenticate with.
+ * @return string
+ */
+ public function getPassword()
+ {
+ return $this->_password;
+ }
+
+ /**
+ * Set the auth mode to use to authenticate.
+ * @param string $mode
+ */
+ public function setAuthMode($mode)
+ {
+ $this->_auth_mode = $mode;
+ }
+
+ /**
+ * Get the auth mode to use to authenticate.
+ * @return string
+ */
+ public function getAuthMode()
+ {
+ return $this->_auth_mode;
+ }
+
+ /**
+ * Get the name of the ESMTP extension this handles.
+ * @return boolean
+ */
+ public function getHandledKeyword()
+ {
+ return 'AUTH';
+ }
+
+ /**
+ * Set the parameters which the EHLO greeting indicated.
+ * @param string[] $parameters
+ */
+ public function setKeywordParams(array $parameters)
+ {
+ $this->_esmtpParams = $parameters;
+ }
+
+ /**
+ * Runs immediately after a EHLO has been issued.
+ * @param Swift_Transport_SmtpAgent $agent to read/write
+ */
+ public function afterEhlo(Swift_Transport_SmtpAgent $agent)
+ {
+ if ($this->_username)
+ {
+ $count = 0;
+ foreach ($this->_getAuthenticatorsForAgent() as $authenticator)
+ {
+ if (in_array(strtolower($authenticator->getAuthKeyword()),
+ array_map('strtolower', $this->_esmtpParams)))
+ {
+ $count++;
+ if ($authenticator->authenticate($agent, $this->_username, $this->_password))
+ {
+ return;
+ }
+ }
+ }
+ throw new Swift_TransportException(
+ 'Failed to authenticate on SMTP server with username "' .
+ $this->_username . '" using ' . $count . ' possible authenticators'
+ );
+ }
+ }
+
+ /**
+ * Not used.
+ */
+ public function getMailParams()
+ {
+ return array();
+ }
+
+ /**
+ * Not used.
+ */
+ public function getRcptParams()
+ {
+ return array();
+ }
+
+ /**
+ * Not used.
+ */
+ public function onCommand(Swift_Transport_SmtpAgent $agent,
+ $command, $codes = array(), &$failedRecipients = null, &$stop = false)
+ {
+ }
+
+ /**
+ * Returns +1, -1 or 0 according to the rules for usort().
+ * This method is called to ensure extensions can be execute in an appropriate order.
+ * @param string $esmtpKeyword to compare with
+ * @return int
+ */
+ public function getPriorityOver($esmtpKeyword)
+ {
+ return 0;
+ }
+
+ /**
+ * Returns an array of method names which are exposed to the Esmtp class.
+ * @return string[]
+ */
+ public function exposeMixinMethods()
+ {
+ return array('setUsername', 'getUsername', 'setPassword', 'getPassword', 'setAuthMode', 'getAuthMode');
+ }
+
+ /**
+ * Not used.
+ */
+ public function resetState()
+ {
+ }
+
+ // -- Protected methods
+
+ /**
+ * Returns the authenticator list for the given agent.
+ * @param Swift_Transport_SmtpAgent $agent
+ * @return array
+ * @access protected
+ */
+ protected function _getAuthenticatorsForAgent()
+ {
+ if (!$mode = strtolower($this->_auth_mode))
+ {
+ return $this->_authenticators;
+ }
+
+ foreach ($this->_authenticators as $authenticator)
+ {
+ if (strtolower($authenticator->getAuthKeyword()) == $mode)
+ {
+ return array($authenticator);
+ }
+ }
+
+ throw new Swift_TransportException('Auth mode '.$mode.' is invalid');
+ }
+}