generated from Nodarx/template
69 lines
1.9 KiB
PHP
69 lines
1.9 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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namespace KTXM\ProviderImap\Smtp\Protocol;
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use KTXM\ProviderImap\Smtp\SmtpException;
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use KTXM\ProviderImap\Smtp\Transport\ConnectionInterface;
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use Psr\Log\LoggerInterface;
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/**
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* Reads SMTP replies, assembling multi-line responses.
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*
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* A multi-line reply repeats the status code on every line, using a hyphen
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* ("250-text") to indicate continuation and a space ("250 text") on the final
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* line. See RFC 5321 §4.2.
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*/
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final class ReplyReader
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{
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public function __construct(
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private readonly ConnectionInterface $connection,
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private readonly ?LoggerInterface $logger = null,
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) {}
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public function read(): Reply
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{
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$lines = [];
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$raw = '';
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$code = null;
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while (true) {
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$rawLine = $this->connection->readLine();
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$raw .= $rawLine;
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$trimmed = rtrim($rawLine, "\r\n");
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if (!preg_match('/^(\d{3})([ -]?)(.*)$/', $trimmed, $matches)) {
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throw new SmtpException(sprintf('Malformed SMTP reply line: %s', $trimmed));
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}
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$lineCode = (int) $matches[1];
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$separator = $matches[2];
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$lines[] = $matches[3];
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if ($code === null) {
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$code = $lineCode;
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} elseif ($lineCode !== $code) {
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throw new SmtpException(sprintf('Inconsistent SMTP reply code: %s', $trimmed));
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}
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// A space separator (or no separator) marks the final line.
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if ($separator !== '-') {
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break;
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}
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}
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$this->logger?->debug('SMTP reply received: {raw}', [
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'code' => $code,
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'raw' => rtrim($raw, "\r\n"),
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]);
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return new Reply($code ?? 0, $lines, rtrim($raw, "\r\n"));
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}
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}
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