Completed
Pull Request — master (#544)
by Maxence
02:26
created

RemoteService::save()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 3

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 3
rs 10
c 0
b 0
f 0
cc 1
nc 1
nop 1
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<?php
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declare(strict_types=1);
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/**
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 * Circles - Bring cloud-users closer together.
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 *
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 * This file is licensed under the Affero General Public License version 3 or
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 * later. See the COPYING file.
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 *
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 * @author Maxence Lange <[email protected]>
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 * @copyright 2021
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 * @license GNU AGPL version 3 or any later version
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU Affero General Public License as
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 * published by the Free Software Foundation, either version 3 of the
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 * License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU Affero General Public License for more details.
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 *
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 * You should have received a copy of the GNU Affero General Public License
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 *
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 */
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namespace OCA\Circles\Service;
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use daita\MySmallPhpTools\ActivityPub\Nextcloud\nc21\NC21Signature;
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use daita\MySmallPhpTools\Exceptions\InvalidOriginException;
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use daita\MySmallPhpTools\Exceptions\MalformedArrayException;
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use daita\MySmallPhpTools\Exceptions\RequestNetworkException;
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use daita\MySmallPhpTools\Exceptions\RowNotFoundException;
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use daita\MySmallPhpTools\Exceptions\SignatoryException;
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use daita\MySmallPhpTools\Exceptions\SignatureException;
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use daita\MySmallPhpTools\Model\Nextcloud\nc21\NC21Request;
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use daita\MySmallPhpTools\Model\Nextcloud\nc21\NC21SignedRequest;
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use daita\MySmallPhpTools\Traits\Nextcloud\nc21\TNC21LocalSignatory;
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use daita\MySmallPhpTools\Traits\TStringTools;
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use OCA\Circles\Db\RemoteRequest;
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use OCA\Circles\Exceptions\RemoteNotFoundException;
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use OCA\Circles\Exceptions\RemoteUidException;
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use OCA\Circles\Model\AppService;
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use OCP\IURLGenerator;
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/**
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 * Class RemoteService
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 *
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 * @package OCA\Circles\Service
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 */
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class RemoteService extends NC21Signature {
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	use TNC21LocalSignatory;
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	use TStringTools;
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	const UPDATE_DATA = 'data';
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	const UPDATE_INSTANCE = 'instance';
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	const UPDATE_HREF = 'href';
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	/** @var IURLGenerator */
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	private $urlGenerator;
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	/** @var RemoteRequest */
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	private $remoteRequest;
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	/** @var ConfigService */
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	private $configService;
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	/**
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	 * RemoteService constructor.
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	 *
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	 * @param IURLGenerator $urlGenerator
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	 * @param RemoteRequest $remoteRequest
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	 * @param ConfigService $configService
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	 */
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	public function __construct(
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		IURLGenerator $urlGenerator, RemoteRequest $remoteRequest, ConfigService $configService
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	) {
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		$this->setup('app', 'circles');
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		$this->urlGenerator = $urlGenerator;
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		$this->remoteRequest = $remoteRequest;
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		$this->configService = $configService;
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	}
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	/**
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	 * @param bool $generate
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	 *
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	 * @param string $confirmKey
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	 *
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	 * @return AppService
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	 * @throws SignatoryException
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	 * @throws SignatureException
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	 */
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	public function getAppSignatory(bool $generate = false, string $confirmKey = ''): AppService {
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		$app = new AppService($this->configService->getRemotePath());
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		$this->fillSimpleSignatory($app, $generate);
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		$app->setUidFromKey();
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		if ($confirmKey !== '') {
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			$app->setAuthSigned($this->signString($confirmKey, $app));
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			$this->verifyString($confirmKey, base64_decode($app->getAuthSigned()), $app->getPublicKey());
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		}
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		$app->setTest($this->configService->getRemotePath('circles.Remote.test'));
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		$app->setIncoming($this->configService->getRemotePath('circles.Remote.incoming'));
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		$app->setCircles($this->configService->getRemotePath('circles.Remote.circles'));
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		$app->setMembers($this->configService->getRemotePath('circles.Remote.members'));
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		return $app;
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	}
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	/**
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	 * @throws SignatureException
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	 */
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	public function resetAppSignatory(): void {
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		try {
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			$app = $this->getAppSignatory();
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			$this->removeSimpleSignatory($app);
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		} catch (SignatoryException $e) {
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		}
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	}
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	/**
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	 * @param string $keyId
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	 * @param bool $refresh
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	 * @param bool $auth
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	 *
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	 * @return AppService
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	 * @throws SignatoryException
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	 * @throws SignatureException
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	 */
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	public function retrieveSignatory(string $keyId, bool $refresh = false, bool $auth = false): AppService {
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		if (!$refresh) {
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			throw new SignatoryException();
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		}
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		$appService = new AppService($keyId);
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		$confirm = '';
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		$params = [];
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		if ($auth) {
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			$confirm = $this->uuid();
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			$params['auth'] = $confirm;
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		}
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		$this->downloadSignatory($appService, $keyId, $params);
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		$appService->setUidFromKey();
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		$this->confirmAuth($appService, $confirm);
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		return $appService;
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	}
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	/**
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	 * @param AppService $remote
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	 * @param string $auth
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	 *
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	 * @throws SignatureException
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	 */
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	private function confirmAuth(AppService $remote, string $auth): void {
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		if ($auth === '') {
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			return;
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		}
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		list($algo, $signed) = explode(':', $this->get('auth-signed', $remote->getOrigData()));
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		try {
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			if ($signed === null) {
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				throw new SignatureException('invalid auth-signed');
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			}
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			$this->verifyString($auth, base64_decode($signed), $remote->getPublicKey(), $algo);
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			$remote->setIdentityAuthed(true);
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		} catch (SignatureException $e) {
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			$this->debug(
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				'Auth cannot be confirmed',
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				['auth' => $auth, 'signed' => $signed, 'signatory' => $remote]
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			);
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			throw $e;
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		}
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	}
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	/**
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	 * @param string $remote
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	 * @param array $data
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	 *
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	 * @return NC21SignedRequest
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	 * @throws RequestNetworkException
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	 * @throws SignatoryException
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	 */
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	public function test(string $remote, array $data = ['test' => 42]): NC21SignedRequest {
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		$request = new NC21Request();
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		$request->basedOnUrl($remote);
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		$request->setFollowLocation(true);
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		$request->setLocalAddressAllowed(true);
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		$request->setTimeout(5);
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		$request->setData($data);
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		$app = $this->getAppSignatory();
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//		$app->setAlgorithm(NC21Signatory::SHA512);
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		$signedRequest = $this->signRequest($request, $app);
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		$this->doRequest($signedRequest->getOutgoingRequest());
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		return $signedRequest;
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	}
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	/**
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	 * @return NC21SignedRequest
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	 * @throws InvalidOriginException
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	 * @throws MalformedArrayException
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	 * @throws SignatoryException
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	 * @throws SignatureException
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	 */
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	public function incomingTest(): NC21SignedRequest {
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		return $this->incomingSignedRequest($this->configService->getLocalInstance());
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	}
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	/**
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	 * @param AppService $remote
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	 * @param AppService|null $stored
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	 *
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	 * @throws RemoteNotFoundException
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	 * @throws RemoteUidException
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	 */
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	public function confirmValidRemote(AppService $remote, ?AppService &$stored = null): void {
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		try {
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			$stored = $this->remoteRequest->getFromHref($remote->getId());
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		} catch (RowNotFoundException $e) {
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			if ($remote->getInstance() === '') {
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				throw new RemoteNotFoundException();
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			}
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			try {
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				$stored = $this->remoteRequest->getFromInstance($remote->getInstance());
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			} catch (RowNotFoundException $e) {
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				throw new RemoteNotFoundException();
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			}
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		}
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		if ($stored->getUid() !== $remote->getUid(true)) {
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			throw new RemoteUidException();
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		}
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	}
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	/**
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	 * @param AppService $remote
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	 */
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	public function save(AppService $remote): void {
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		$this->remoteRequest->save($remote);
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	}
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	/**
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	 * @param AppService $remote
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	 * @param string $update
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	 *
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	 * @throws RemoteUidException
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	 */
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	public function update(AppService $remote, string $update = self::UPDATE_DATA): void {
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		switch ($update) {
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			case self::UPDATE_DATA:
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				$this->remoteRequest->update($remote);
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				break;
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			case self::UPDATE_HREF:
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				$remote->mustBeIdentityAuthed();
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				$this->remoteRequest->updateHref($remote);
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				break;
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			case self::UPDATE_INSTANCE:
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				$remote->mustBeIdentityAuthed();
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				$this->remoteRequest->updateInstance($remote);
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				break;
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		}
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	}
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}
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