class DefaultMailSystem implements MailSystemInterface {
public function format(array $message) {
$message['body'] = implode("\n\n", $message['body']);
$message['body'] = backdrop_html_to_text($message['body']);
return $message;
}
public function mail(array $message) {
if (isset($message['headers']['Return-Path'])) {
$return_path_set = strpos(ini_get('sendmail_path'), ' -f');
if (!$return_path_set) {
$message['Return-Path'] = $message['headers']['Return-Path'];
unset($message['headers']['Return-Path']);
}
}
$mimeheaders = array();
foreach ($message['headers'] as $name => $value) {
$mimeheaders[] = $name . ': ' . mime_header_encode($value);
}
$line_endings = settings_get('mail_line_endings', MAIL_LINE_ENDINGS);
$mail_subject = mime_header_encode($message['subject']);
$mail_body = preg_replace('@\r?\n@', $line_endings, $message['body']);
$mail_headers = join("\n", $mimeheaders);
if (!isset($_SERVER['WINDIR']) && strpos($_SERVER['SERVER_SOFTWARE'], 'Win32') === FALSE) {
$additional_params = NULL;
if (isset($message['Return-Path']) && (config_get('system.core', 'site_mail') === $message['Return-Path'] || self::_isShellSafe($message['Return-Path']))) {
$additional_params = '-f' . $message['Return-Path'];
}
$mail_result = @mail(
$message['to'],
$mail_subject,
$mail_body,
$mail_headers,
$additional_params
);
}
else {
$old_from = ini_get('sendmail_from');
ini_set('sendmail_from', $message['Return-Path']);
$mail_result = @mail(
$message['to'],
$mail_subject,
$mail_body,
$mail_headers
);
ini_set('sendmail_from', $old_from);
}
return $mail_result;
}
protected static function _isShellSafe($string) {
if (escapeshellcmd($string) !== $string || !in_array(escapeshellarg($string), array("'$string'", "\"$string\""))) {
return FALSE;
}
if (preg_match('/[^a-zA-Z0-9@_\-.]/', $string) !== 0) {
return FALSE;
}
return TRUE;
}
}