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Editing: SmtpClientFactory.php

<?php

declare(strict_types=1);

/**
 * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace OCA\Mail\SMTP;

use Exception;
use Horde_Mail_Transport;
use Horde_Mail_Transport_Smtphorde;
use Horde_Smtp_Password_Xoauth2;
use OCA\Mail\Account;
use OCA\Mail\Exception\ServiceException;
use OCA\Mail\Support\HostNameFactory;
use OCP\IConfig;
use OCP\Security\ICrypto;

class SmtpClientFactory {
	/** @var IConfig */
	private $config;

/** @var ICrypto */
	private $crypto;

/** @var HostNameFactory */
	private $hostNameFactory;

public function __construct(IConfig $config,
		ICrypto $crypto,
		HostNameFactory $hostNameFactory) {
		$this->config = $config;
		$this->crypto = $crypto;
		$this->hostNameFactory = $hostNameFactory;
	}

/**
	 * @param Account $account
	 *
	 * @return Horde_Mail_Transport
	 */
	public function create(Account $account): Horde_Mail_Transport {
		$mailAccount = $account->getMailAccount();

$decryptedPassword = null;
		if ($mailAccount->getOutboundPassword() !== null) {
			$decryptedPassword = $this->crypto->decrypt($mailAccount->getOutboundPassword());
		}
		$security = $mailAccount->getOutboundSslMode();
		$params = [
			'localhost' => $this->hostNameFactory->getHostName(),
			'host' => $mailAccount->getOutboundHost(),
			'password' => $decryptedPassword,
			'port' => $mailAccount->getOutboundPort(),
			'username' => $mailAccount->getOutboundUser(),
			'secure' => $security === 'none' ? false : $security,
			'timeout' => (int)$this->config->getSystemValue('app.mail.smtp.timeout', 20),
			'context' => [
				'ssl' => [
					'verify_peer' => $this->config->getSystemValueBool('app.mail.verify-tls-peer', true),
					'verify_peer_name' => $this->config->getSystemValueBool('app.mail.verify-tls-peer', true),
				],
			],
		];
		if ($account->getMailAccount()->getAuthMethod() === 'xoauth2') {
			try {
				$oauthAccessToken = $account->getMailAccount()->getOauthAccessToken();
				if ($oauthAccessToken === null) {
					throw new ServiceException('Missing access token for xoauth2 account');
				}
				$decryptedAccessToken = $this->crypto->decrypt($oauthAccessToken);
			} catch (Exception $e) {
				throw new ServiceException('Could not decrypt account access token: ' . $e->getMessage(), 0, $e);
			}

$params['password'] = $decryptedAccessToken; // Not used, but Horde wants this
			$params['xoauth2_token'] = new Horde_Smtp_Password_Xoauth2(
				$account->getEmail(),
				$decryptedAccessToken,
			);
		}
		if ($account->getMailAccount()->getDebug() || $this->config->getSystemValueBool('app.mail.debug')) {
			$fn = "mail-{$account->getUserId()}-{$account->getId()}-smtp.log";
			$params['debug'] = $this->config->getSystemValue('datadirectory') . '/' . $fn;
		}
		return new Horde_Mail_Transport_Smtphorde($params);
	}
}

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