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<?php |
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declare(strict_types=1); |
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namespace Genkgo\Mail\Protocol\Smtp\Capability; |
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use Genkgo\Mail\GenericMessage; |
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use Genkgo\Mail\Protocol\ConnectionInterface; |
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use Genkgo\Mail\Protocol\Smtp\BackendInterface; |
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use Genkgo\Mail\Protocol\Smtp\CapabilityInterface; |
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use Genkgo\Mail\Protocol\Smtp\GreyListInterface; |
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use Genkgo\Mail\Protocol\Smtp\Session; |
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use Genkgo\Mail\Protocol\Smtp\SpamDecideScore; |
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use Genkgo\Mail\Protocol\Smtp\SpamScoreInterface; |
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final class DataCapability implements CapabilityInterface |
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{ |
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/** |
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* @var BackendInterface |
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*/ |
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private $backend; |
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/** |
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* @var SpamScoreInterface |
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*/ |
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private $spamScore; |
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/** |
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* @var SpamDecideScore |
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*/ |
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private $spamDecideScore; |
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/** |
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* @var GreyListInterface |
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*/ |
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private $greyListing; |
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/** |
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* @param BackendInterface $backend |
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* @param SpamScoreInterface $spamScore |
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* @param GreyListInterface $greyListing |
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* @param SpamDecideScore $spamDecideScore |
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*/ |
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public function __construct( |
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BackendInterface $backend, |
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SpamScoreInterface $spamScore, |
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GreyListInterface $greyListing, |
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SpamDecideScore $spamDecideScore |
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) { |
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$this->backend = $backend; |
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$this->spamScore = $spamScore; |
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$this->spamDecideScore = $spamDecideScore; |
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$this->greyListing = $greyListing; |
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} |
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/** |
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* @param ConnectionInterface $connection |
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* @param Session $session |
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* @return Session |
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*/ |
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public function manifest(ConnectionInterface $connection, Session $session): Session |
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{ |
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$connection->send('354 Enter message, ending with "." on a line by itself'); |
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$data = []; |
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while (true) { |
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$line = $connection->receive(); |
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if ($line === '.') { |
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break; |
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} |
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$data[] = $line; |
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} |
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try { |
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$message = GenericMessage::fromString(\implode("\r\n", $data)); |
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} catch (\InvalidArgumentException $e) { |
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$connection->send('500 Malformed message'); |
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return $session; |
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} |
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$spamScore = $this->spamScore->calculate($message); |
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if ($this->spamDecideScore->isSpam($spamScore)) { |
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$connection->send('550 Message discarded as high-probability spam'); |
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return $session; |
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} |
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if ($this->spamDecideScore->isLikelySpam($spamScore) && !$this->greyListing->contains($message)) { |
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$this->greyListing->attach($message); |
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$connection->send('421 Please try again later'); |
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return $session; |
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} |
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$this->greyListing->detach($message); |
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$folder = 'INBOX'; |
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if ($this->spamDecideScore->isLikelySpam($spamScore)) { |
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$folder = 'JUNK'; |
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} |
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foreach ($session->getRecipients() as $recipient) { |
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$this->backend->store($recipient, $message, $folder); |
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} |
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$connection->send('250 Message received, queue for delivering'); |
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return $session->withMessage($message); |
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} |
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/** |
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* @return string |
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*/ |
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public function advertise(): string |
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{ |
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return 'DATA'; |
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} |
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} |
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genkgo /
mail
