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<?php declare(strict_types = 1); namespace MailPoet\Mailer\Methods; if (!defined('ABSPATH')) exit; use MailPoet\Mailer\Mailer; use MailPoet\Mailer\Methods\Common\BlacklistCheck; use MailPoet\Mailer\WordPress\PHPMailerLoader; use PHPMailer\PHPMailer\PHPMailer; PHPMailerLoader::load(); abstract class PHPMailerMethod implements MailerMethod { /** @var string[] */ public $sender; /** @var string[] */ public $replyTo; /** @var string */ public $returnPath; /** @var PHPMailer */ public $mailer; protected $errorMapper; /** @var BlacklistCheck */ protected $blacklist; public function __construct( $sender, $replyTo, $returnPath, $errorMapper ) { $this->sender = $sender; $this->replyTo = $replyTo; $this->returnPath = $returnPath; $this->mailer = $this->buildMailer(); $this->errorMapper = $errorMapper; $this->blacklist = new BlacklistCheck(); } public function send($newsletter, $subscriber, $extraParams = []): array { if ($this->blacklist->isBlacklisted($subscriber)) { $error = $this->errorMapper->getBlacklistError($subscriber); return Mailer::formatMailerErrorResult($error); } try { $mailer = $this->configureMailerWithMessage($newsletter, $subscriber, $extraParams); $result = $mailer->send(); } catch (\Exception $e) { return Mailer::formatMailerErrorResult($this->errorMapper->getErrorFromException($e, $subscriber)); } if ($result === true) { return Mailer::formatMailerSendSuccessResult(); } else { $error = $this->errorMapper->getErrorForSubscriber($subscriber); return Mailer::formatMailerErrorResult($error); } } abstract public function buildMailer(): PHPMailer; public function configureMailerWithMessage($newsletter, $subscriber, $extraParams = []) { $mailer = $this->mailer; $mailer->clearAddresses(); $mailer->clearCustomHeaders(); $mailer->isHTML(!empty($newsletter['body']['html'])); $mailer->CharSet = 'UTF-8'; // phpcs:ignore Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps $mailer->setFrom($this->sender['from_email'], $this->sender['from_name'], false); $mailer->addReplyTo($this->replyTo['reply_to_email'], $this->replyTo['reply_to_name']); $subscriber = $this->processSubscriber($subscriber); $mailer->addAddress($subscriber['email'], $subscriber['name']); $mailer->Subject = (!empty($newsletter['subject'])) ? $newsletter['subject'] : ''; // phpcs:ignore Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps $mailer->Body = (!empty($newsletter['body']['html'])) ? $newsletter['body']['html'] : $newsletter['body']['text']; // phpcs:ignore Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps if ($mailer->ContentType !== 'text/plain') { // phpcs:ignore Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps $mailer->AltBody = (!empty($newsletter['body']['text'])) ? $newsletter['body']['text'] : ''; // phpcs:ignore Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps } $mailer->Sender = $this->returnPath; // phpcs:ignore Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps if (!empty($extraParams['unsubscribe_url'])) { $this->mailer->addCustomHeader('List-Unsubscribe', '<' . $extraParams['unsubscribe_url'] . '>'); } // Enforce base64 encoding when lines are too long, otherwise quoted-printable encoding // is automatically used which can occasionally break the email body. // Explanation: // The bug occurs on Unix systems where mail() function passes email to a variation of // sendmail command which expects only NL as line endings (POSIX). Since quoted-printable // requires CRLF some of those commands convert LF to CRLF which can break the email body // because it already (correctly) uses CRLF. Such CRLF then (wrongly) becomes CRCRLF. if (PHPMailer::hasLineLongerThanMax($mailer->Body)) { // phpcs:ignore Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps $mailer->Encoding = 'base64'; // phpcs:ignore Squiz.NamingConventions.ValidVariableName.MemberNotCamelCaps } return $mailer; } public function processSubscriber($subscriber) { preg_match('!(?P<name>.*?)\s<(?P<email>.*?)>!', $subscriber, $subscriberData); if (!isset($subscriberData['email'])) { $subscriberData = [ 'email' => $subscriber, ]; } return [ 'email' => $subscriberData['email'], 'name' => (isset($subscriberData['name'])) ? $subscriberData['name'] : '', ]; } }