generated from Nodarx/template
137 lines
3.5 KiB
PHP
137 lines
3.5 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\Transport;
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use KTXM\ProviderImap\Smtp\ConnectionConfig;
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use KTXM\ProviderImap\Smtp\SmtpException;
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use Psr\Log\LoggerInterface;
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final class SocketConnection implements ConnectionInterface
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{
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/** @var resource|null */
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private $stream = null;
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public function __construct(
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private readonly ?LoggerInterface $logger = null,
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) {}
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public function connect(ConnectionConfig $config): void
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{
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if ($this->isConnected()) {
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return;
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}
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$context = stream_context_create($config->streamContextOptions());
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$errorCode = 0;
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$errorMessage = '';
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$stream = @stream_socket_client(
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$config->endpoint(),
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$errorCode,
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$errorMessage,
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$config->timeout(),
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STREAM_CLIENT_CONNECT,
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$context,
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);
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if (!is_resource($stream)) {
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$this->logger?->error('SMTP socket connection failed', [
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'endpoint' => $config->endpoint(),
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'code' => $errorCode,
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'message' => $errorMessage ?: 'unknown error',
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]);
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throw new SmtpException(sprintf(
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'Unable to connect to %s (%d: %s)',
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$config->endpoint(),
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$errorCode,
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$errorMessage ?: 'unknown error',
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));
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}
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stream_set_timeout($stream, (int) $config->timeout());
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$this->stream = $stream;
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$this->logger?->info('SMTP socket connected to {endpoint} (timeout={timeout})', [
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'endpoint' => $config->endpoint(),
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'timeout' => $config->timeout(),
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]);
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}
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public function disconnect(): void
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{
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if (!is_resource($this->stream)) {
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return;
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}
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fclose($this->stream);
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$this->stream = null;
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$this->logger?->info('SMTP socket disconnected');
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}
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public function isConnected(): bool
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{
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return is_resource($this->stream);
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}
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public function write(string $payload): void
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{
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$stream = $this->stream();
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$written = fwrite($stream, $payload);
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if ($written === false || $written !== strlen($payload)) {
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$this->logger?->error('SMTP socket write failed (bytes={bytes})', [
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'bytes' => strlen($payload),
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]);
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throw new SmtpException('Failed to write complete payload to SMTP socket.');
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}
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}
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public function readLine(): string
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{
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$stream = $this->stream();
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$line = fgets($stream);
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if ($line === false) {
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$this->logger?->error('SMTP socket read failed');
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throw new SmtpException('Failed to read line from SMTP socket.');
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}
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return $line;
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}
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public function upgradeToTls(): void
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{
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$stream = $this->stream();
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$result = stream_socket_enable_crypto($stream, true, STREAM_CRYPTO_METHOD_TLS_CLIENT);
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if ($result !== true) {
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$this->logger?->error('SMTP TLS upgrade failed');
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throw new SmtpException('Failed to enable TLS on SMTP socket.');
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}
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$this->logger?->info('SMTP socket upgraded to TLS');
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}
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/**
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* @return resource
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*/
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private function stream()
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{
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if (!is_resource($this->stream)) {
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throw new SmtpException('SMTP socket is not connected.');
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}
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return $this->stream;
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}
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}
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