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<?php
/**
* PHPMailer - PHP email creation and transport class.
* PHP Version 5.5.
*
* @see https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
*
* @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
* @author Jim Jagielski (jimjag) <jimjag@gmail.com>
* @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
* @author Brent R. Matzelle (original founder)
* @copyright 2012 - 2023 Marcus Bointon
* @copyright 2010 - 2012 Jim Jagielski
* @copyright 2004 - 2009 Andy Prevost
* @license https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html GNU Lesser General Public License
* @note This program is distributed in the hope that it will be useful - WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*/
namespace PHPMailer\PHPMailer;
/**
* Configure PHPMailer with DSN string.
*
* @see https://en.wikipedia.org/wiki/Data_source_name
*
* @author Oleg Voronkovich <oleg-voronkovich@yandex.ru>
*/
class DSNConfigurator
{
/**
* Create new PHPMailer instance configured by DSN.
*
* @param string $dsn DSN
* @param bool $exceptions Should we throw external exceptions?
*
* @return PHPMailer
*/
public static function mailer($dsn, $exceptions = null)
{
static $configurator = null;
if (null === $configurator) {
$configurator = new DSNConfigurator();
}
return $configurator->configure(new PHPMailer($exceptions), $dsn);
}
/**
* Configure PHPMailer instance with DSN string.
*
* @param PHPMailer $mailer PHPMailer instance
* @param string $dsn DSN
*
* @return PHPMailer
*/
public function configure(PHPMailer $mailer, $dsn)
{
$config = $this->parseDSN($dsn);
$this->applyConfig($mailer, $config);
return $mailer;
}
/**
* Parse DSN string.
*
* @param string $dsn DSN
*
* @throws Exception If DSN is malformed
*
* @return array Configuration
*/
private function parseDSN($dsn)
{
$config = $this->parseUrl($dsn);
if (false === $config || !isset($config['scheme']) || !isset($config['host'])) {
throw new Exception('Malformed DSN');
}
if (isset($config['query'])) {
parse_str($config['query'], $config['query']);
}
return $config;
}
/**
* Apply configuration to mailer.
*
* @param PHPMailer $mailer PHPMailer instance
* @param array $config Configuration
*
* @throws Exception If scheme is invalid
*/
private function applyConfig(PHPMailer $mailer, $config)
{
switch ($config['scheme']) {
case 'mail':
$mailer->isMail();
break;
case 'sendmail':
$mailer->isSendmail();
break;
case 'qmail':
$mailer->isQmail();
break;
case 'smtp':
case 'smtps':
$mailer->isSMTP();
$this->configureSMTP($mailer, $config);
break;
default:
throw new Exception(
sprintf(
'Invalid scheme: "%s". Allowed values: "mail", "sendmail", "qmail", "smtp", "smtps".',
$config['scheme']
)
);
}
if (isset($config['query'])) {
$this->configureOptions($mailer, $config['query']);
}
}
/**
* Configure SMTP.
*
* @param PHPMailer $mailer PHPMailer instance
* @param array $config Configuration
*/
private function configureSMTP($mailer, $config)
{
$isSMTPS = 'smtps' === $config['scheme'];
if ($isSMTPS) {
$mailer->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
}
$mailer->Host = $config['host'];
if (isset($config['port'])) {
$mailer->Port = $config['port'];
} elseif ($isSMTPS) {
$mailer->Port = SMTP::DEFAULT_SECURE_PORT;
}
$mailer->SMTPAuth = isset($config['user']) || isset($config['pass']);
if (isset($config['user'])) {
$mailer->Username = $config['user'];
}
if (isset($config['pass'])) {
$mailer->Password = $config['pass'];
}
}
/**
* Configure options.
*
* @param PHPMailer $mailer PHPMailer instance
* @param array $options Options
*
* @throws Exception If option is unknown
*/
private function configureOptions(PHPMailer $mailer, $options)
{
$allowedOptions = get_object_vars($mailer);
unset($allowedOptions['Mailer']);
unset($allowedOptions['SMTPAuth']);
unset($allowedOptions['Username']);
unset($allowedOptions['Password']);
unset($allowedOptions['Hostname']);
unset($allowedOptions['Port']);
unset($allowedOptions['ErrorInfo']);
$allowedOptions = \array_keys($allowedOptions);
foreach ($options as $key => $value) {
if (!in_array($key, $allowedOptions)) {
throw new Exception(
sprintf(
'Unknown option: "%s". Allowed values: "%s"',
$key,
implode('", "', $allowedOptions)
)
);
}
switch ($key) {
case 'AllowEmpty':
case 'SMTPAutoTLS':
case 'SMTPKeepAlive':
case 'SingleTo':
case 'UseSendmailOptions':
case 'do_verp':
case 'DKIM_copyHeaderFields':
$mailer->$key = (bool) $value;
break;
case 'Priority':
case 'SMTPDebug':
case 'WordWrap':
$mailer->$key = (int) $value;
break;
default:
$mailer->$key = $value;
break;
}
}
}
/**
* Parse a URL.
* Wrapper for the built-in parse_url function to work around a bug in PHP 5.5.
*
* @param string $url URL
*
* @return array|false
*/
protected function parseUrl($url)
{
if (\PHP_VERSION_ID >= 50600 || false === strpos($url, '?')) {
return parse_url($url);
}
$chunks = explode('?', $url);
if (is_array($chunks)) {
$result = parse_url($chunks[0]);
if (is_array($result)) {
$result['query'] = $chunks[1];
}
return $result;
}
return false;
}
}