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<?php
/*
* This file is part of SwiftMailer.
* (c) 2009 Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* Redirects all email to a single recipient.
*
* @author Fabien Potencier
*/
class Swift_Plugins_RedirectingPlugin implements Swift_Events_SendListener
{
/**
* The recipient who will receive all messages.
*
* @var mixed
*/
private $_recipient;
/**
* List of regular expression for recipient whitelisting.
*
* @var array
*/
private $_whitelist = array();
/**
* Create a new RedirectingPlugin.
*
* @param mixed $recipient
* @param array $whitelist
*/
public function __construct($recipient, array $whitelist = array())
{
$this->_recipient = $recipient;
$this->_whitelist = $whitelist;
}
/**
* Set the recipient of all messages.
*
* @param mixed $recipient
*/
public function setRecipient($recipient)
{
$this->_recipient = $recipient;
}
/**
* Get the recipient of all messages.
*
* @return mixed
*/
public function getRecipient()
{
return $this->_recipient;
}
/**
* Set a list of regular expressions to whitelist certain recipients.
*
* @param array $whitelist
*/
public function setWhitelist(array $whitelist)
{
$this->_whitelist = $whitelist;
}
/**
* Get the whitelist.
*
* @return array
*/
public function getWhitelist()
{
return $this->_whitelist;
}
/**
* Invoked immediately before the Message is sent.
*
* @param Swift_Events_SendEvent $evt
*/
public function beforeSendPerformed(Swift_Events_SendEvent $evt)
{
$message = $evt->getMessage();
$headers = $message->getHeaders();
// conditionally save current recipients
if ($headers->has('to')) {
$headers->addMailboxHeader('X-Swift-To', $message->getTo());
}
if ($headers->has('cc')) {
$headers->addMailboxHeader('X-Swift-Cc', $message->getCc());
}
if ($headers->has('bcc')) {
$headers->addMailboxHeader('X-Swift-Bcc', $message->getBcc());
}
// Filter remaining headers against whitelist
$this->_filterHeaderSet($headers, 'To');
$this->_filterHeaderSet($headers, 'Cc');
$this->_filterHeaderSet($headers, 'Bcc');
// Add each hard coded recipient
$to = $message->getTo();
if (null === $to) {
$to = array();
}
foreach ((array) $this->_recipient as $recipient) {
if (!array_key_exists($recipient, $to)) {
$message->addTo($recipient);
}
}
}
/**
* Filter header set against a whitelist of regular expressions.
*
* @param Swift_Mime_HeaderSet $headerSet
* @param string $type
*/
private function _filterHeaderSet(Swift_Mime_HeaderSet $headerSet, $type)
{
foreach ($headerSet->getAll($type) as $headers) {
$headers->setNameAddresses($this->_filterNameAddresses($headers->getNameAddresses()));
}
}
/**
* Filtered list of addresses => name pairs.
*
* @param array $recipients
*
* @return array
*/
private function _filterNameAddresses(array $recipients)
{
$filtered = array();
foreach ($recipients as $address => $name) {
if ($this->_isWhitelisted($address)) {
$filtered[$address] = $name;
}
}
return $filtered;
}
/**
* Matches address against whitelist of regular expressions.
*
* @param $recipient
*
* @return bool
*/
protected function _isWhitelisted($recipient)
{
if (in_array($recipient, (array) $this->_recipient)) {
return true;
}
foreach ($this->_whitelist as $pattern) {
if (preg_match($pattern, $recipient)) {
return true;
}
}
return false;
}
/**
* Invoked immediately after the Message is sent.
*
* @param Swift_Events_SendEvent $evt
*/
public function sendPerformed(Swift_Events_SendEvent $evt)
{
$this->_restoreMessage($evt->getMessage());
}
private function _restoreMessage(Swift_Mime_Message $message)
{
// restore original headers
$headers = $message->getHeaders();
if ($headers->has('X-Swift-To')) {
$message->setTo($headers->get('X-Swift-To')->getNameAddresses());
$headers->removeAll('X-Swift-To');
} else {
$message->setTo(null);
}
if ($headers->has('X-Swift-Cc')) {
$message->setCc($headers->get('X-Swift-Cc')->getNameAddresses());
$headers->removeAll('X-Swift-Cc');
}
if ($headers->has('X-Swift-Bcc')) {
$message->setBcc($headers->get('X-Swift-Bcc')->getNameAddresses());
$headers->removeAll('X-Swift-Bcc');
}
}
}
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