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fix(ocm): get details from sharedSecret from provider 

Signed-off-by: Maxence Lange <maxence@artificial-owl.com>
pull/49646/head
Maxence Lange 2024-12-05 14:50:50 +07:00
parent a6e8d41c25
commit ac470184e7
6 changed files with 99 additions and 37 deletions
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69
apps/cloud_federation_api/lib/Controller/RequestHandlerController.php
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@ -5,6 +5,7 @@
*/
namespace OCA\CloudFederationAPI\Controller;
use NCU\Federation\ISignedCloudFederationProvider;
use NCU\Security\Signature\Exceptions\IdentityNotFoundException;
use NCU\Security\Signature\Exceptions\IncomingRequestException;
use NCU\Security\Signature\Exceptions\SignatoryNotFoundException;
@ -37,8 +38,6 @@ use OCP\IRequest;
use OCP\IURLGenerator;
use OCP\IUserManager;
use OCP\Share\Exceptions\ShareNotFound;
use OCP\Share\IProviderFactory;
use OCP\Share\IShare;
use OCP\Util;
use Psr\Log\LoggerInterface;
@ -68,7 +67,6 @@ class RequestHandlerController extends Controller {
private ICloudIdManager $cloudIdManager,
private readonly ISignatureManager $signatureManager,
private readonly OCMSignatoryManager $signatoryManager,
private readonly IProviderFactory $shareProviderFactory,
) {
parent::__construct($appName, $request);
}
@ -234,16 +232,6 @@ class RequestHandlerController extends Controller {
#[PublicPage]
#[BruteForceProtection(action: 'receiveFederatedShareNotification')]
public function receiveNotification($notificationType, $resourceType, $providerId, ?array $notification) {
try {
// if request is signed and well signed, no exception are thrown
// if request is not signed and host is known for not supporting signed request, no exception are thrown
$signedRequest = $this->getSignedRequest();
$this->confirmShareOrigin($signedRequest, $notification['sharedSecret'] ?? '');
} catch (IncomingRequestException $e) {
$this->logger->warning('incoming request exception', ['exception' => $e]);
return new JSONResponse(['message' => $e->getMessage(), 'validationErrors' => []], Http::STATUS_BAD_REQUEST);
}
// check if all required parameters are set
if ($notificationType === null ||
$resourceType === null ||
@ -259,6 +247,16 @@ class RequestHandlerController extends Controller {
);
}
try {
// if request is signed and well signed, no exception are thrown
// if request is not signed and host is known for not supporting signed request, no exception are thrown
$signedRequest = $this->getSignedRequest();
$this->confirmNotificationIdentity($signedRequest, $resourceType, $notification);
} catch (IncomingRequestException $e) {
$this->logger->warning('incoming request exception', ['exception' => $e]);
return new JSONResponse(['message' => $e->getMessage(), 'validationErrors' => []], Http::STATUS_BAD_REQUEST);
}
try {
$provider = $this->cloudFederationProviderManager->getCloudFederationProvider($resourceType);
$result = $provider->notificationReceived($notificationType, $providerId, $notification);
@ -387,42 +385,45 @@ class RequestHandlerController extends Controller {
}
}
/**
* confirm that the value related to share token is in format userid@hostname
* and compare hostname with the origin of the signed request.
* confirm identity of the remote instance on notification, based on the share token.
*
* If request is not signed, we still verify that the hostname from the extracted value does,
* actually, not support signed request
*
* @param IIncomingSignedRequest|null $signedRequest
* @param string $token
* @param string $resourceType
* @param string $sharedSecret
*
* @throws IncomingRequestException
* @throws BadRequestException
*/
private function confirmShareOrigin(?IIncomingSignedRequest $signedRequest, string $token): void {
if ($token === '') {
private function confirmNotificationIdentity(
?IIncomingSignedRequest $signedRequest,
string $resourceType,
array $notification,
): void {
$sharedSecret = $notification['sharedSecret'] ?? '';
if ($sharedSecret === '') {
throw new BadRequestException(['sharedSecret']);
}
$provider = $this->shareProviderFactory->getProviderForType(IShare::TYPE_REMOTE);
$share = $provider->getShareByToken($token);
try {
$this->confirmShareEntry($signedRequest, $share->getSharedWith());
} catch (IncomingRequestException $e) {
// notification might come from the instance that owns the share
$this->logger->debug('could not confirm origin on sharedWith (' . $share->getSharedWIth() . '); going with shareOwner (' . $share->getShareOwner() . ')', ['exception' => $e]);
try {
$this->confirmShareEntry($signedRequest, $share->getShareOwner());
} catch (IncomingRequestException $f) {
// if both entry are failing, we log first exception as warning and second exception
// will be logged as warning by the controller
$this->logger->warning('could not confirm origin on sharedWith (' . $share->getSharedWIth() . '); going with shareOwner (' . $share->getShareOwner() . ')', ['exception' => $e]);
throw $f;
$provider = $this->cloudFederationProviderManager->getCloudFederationProvider($resourceType);
if ($provider instanceof ISignedCloudFederationProvider) {
$identity = $provider->getFederationIdFromSharedSecret($sharedSecret, $notification);
} else {
$this->logger->debug('cloud federation provider {provider} does not implements ISignedCloudFederationProvider', ['provider' => $provider::class]);
return;
}
} catch (\Exception $e) {
throw new IncomingRequestException($e->getMessage());
}
$this->confirmNotificationEntry($signedRequest, $identity);
}
/**
* @param IIncomingSignedRequest|null $signedRequest
* @param string $entry
@ -430,7 +431,7 @@ class RequestHandlerController extends Controller {
* @return void
* @throws IncomingRequestException
*/
private function confirmShareEntry(?IIncomingSignedRequest $signedRequest, string $entry): void {
private function confirmNotificationEntry(?IIncomingSignedRequest $signedRequest, string $entry): void {
$instance = $this->getHostFromFederationId($entry);
if ($signedRequest === null) {
try {
@ -440,7 +441,7 @@ class RequestHandlerController extends Controller {
return;
}
} elseif ($instance !== $signedRequest->getOrigin()) {
throw new IncomingRequestException('token sharedWith (' . $instance . ') not linked to origin (' . $signedRequest->getOrigin() . ')');
throw new IncomingRequestException('remote instance {instance} not linked to origin {origin}', ['instance' => $instance, 'origin' => $signedRequest->getOrigin()]);
}
}

29
apps/federatedfilesharing/lib/OCM/CloudFederationProviderFiles.php
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@ -5,6 +5,7 @@
*/
namespace OCA\FederatedFileSharing\OCM;
use NCU\Federation\ISignedCloudFederationProvider;
use OC\AppFramework\Http;
use OC\Files\Filesystem;
use OCA\FederatedFileSharing\AddressHandler;
@ -21,7 +22,6 @@ use OCP\Federation\Exceptions\AuthenticationFailedException;
use OCP\Federation\Exceptions\BadRequestException;
use OCP\Federation\Exceptions\ProviderCouldNotAddShareException;
use OCP\Federation\ICloudFederationFactory;
use OCP\Federation\ICloudFederationProvider;
use OCP\Federation\ICloudFederationProviderManager;
use OCP\Federation\ICloudFederationShare;
use OCP\Federation\ICloudIdManager;
@ -37,11 +37,13 @@ use OCP\Notification\IManager as INotificationManager;
use OCP\Server;
use OCP\Share\Exceptions\ShareNotFound;
use OCP\Share\IManager;
use OCP\Share\IProviderFactory;
use OCP\Share\IShare;
use OCP\Util;
use Psr\Log\LoggerInterface;
use SensitiveParameter;
class CloudFederationProviderFiles implements ICloudFederationProvider {
class CloudFederationProviderFiles implements ISignedCloudFederationProvider {
/**
* CloudFederationProvider constructor.
*/
@ -63,6 +65,7 @@ class CloudFederationProviderFiles implements ICloudFederationProvider {
private Manager $externalShareManager,
private LoggerInterface $logger,
private IFilenameValidator $filenameValidator,
private readonly IProviderFactory $shareProviderFactory,
) {
}
@ -747,4 +750,26 @@ class CloudFederationProviderFiles implements ICloudFederationProvider {
return $slaveService->getUserDisplayName($this->cloudIdManager->removeProtocolFromUrl($userId), false);
}
/**
* @inheritDoc
*
* @param string $sharedSecret
* @param array $payload
* @return string
*/
public function getFederationIdFromSharedSecret(
#[SensitiveParameter]
string $sharedSecret,
array $payload,
): string {
$provider = $this->shareProviderFactory->getProviderForType(IShare::TYPE_REMOTE);
try {
$share = $provider->getShareByToken($sharedSecret);
} catch (ShareNotFound $e) {
return '';
}
return $share->getSharedWith();
}
}

1
lib/composer/composer/autoload_classmap.php
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@ -12,6 +12,7 @@ return array(
'NCU\\Config\\Exceptions\\UnknownKeyException' => $baseDir . '/lib/unstable/Config/Exceptions/UnknownKeyException.php',
'NCU\\Config\\IUserConfig' => $baseDir . '/lib/unstable/Config/IUserConfig.php',
'NCU\\Config\\ValueType' => $baseDir . '/lib/unstable/Config/ValueType.php',
'NCU\\Federation\\ISignedCloudFederationProvider' => $baseDir . '/lib/unstable/Federation/ISignedCloudFederationProvider.php',
'NCU\\Security\\Signature\\Enum\\DigestAlgorithm' => $baseDir . '/lib/unstable/Security/Signature/Enum/DigestAlgorithm.php',
'NCU\\Security\\Signature\\Enum\\SignatoryStatus' => $baseDir . '/lib/unstable/Security/Signature/Enum/SignatoryStatus.php',
'NCU\\Security\\Signature\\Enum\\SignatoryType' => $baseDir . '/lib/unstable/Security/Signature/Enum/SignatoryType.php',

1
lib/composer/composer/autoload_static.php
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@ -53,6 +53,7 @@ class ComposerStaticInit749170dad3f5e7f9ca158f5a9f04f6a2
'NCU\\Config\\Exceptions\\UnknownKeyException' => __DIR__ . '/../../..' . '/lib/unstable/Config/Exceptions/UnknownKeyException.php',
'NCU\\Config\\IUserConfig' => __DIR__ . '/../../..' . '/lib/unstable/Config/IUserConfig.php',
'NCU\\Config\\ValueType' => __DIR__ . '/../../..' . '/lib/unstable/Config/ValueType.php',
'NCU\\Federation\\ISignedCloudFederationProvider' => __DIR__ . '/../../..' . '/lib/unstable/Federation/ISignedCloudFederationProvider.php',
'NCU\\Security\\Signature\\Enum\\DigestAlgorithm' => __DIR__ . '/../../..' . '/lib/unstable/Security/Signature/Enum/DigestAlgorithm.php',
'NCU\\Security\\Signature\\Enum\\SignatoryStatus' => __DIR__ . '/../../..' . '/lib/unstable/Security/Signature/Enum/SignatoryStatus.php',
'NCU\\Security\\Signature\\Enum\\SignatoryType' => __DIR__ . '/../../..' . '/lib/unstable/Security/Signature/Enum/SignatoryType.php',

3
lib/private/OCM/OCMDiscoveryService.php
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@ -9,6 +9,7 @@ declare(strict_types=1);
namespace OC\OCM;
use GuzzleHttp\Exception\ConnectException;
use JsonException;
use OCP\AppFramework\Http;
use OCP\Http\Client\IClientService;
@ -50,7 +51,7 @@ class OCMDiscoveryService implements IOCMDiscoveryService {
// if scheme not specified, we test both;
try {
return $this->discover('https://' . $remote, $skipCache);
} catch (OCMProviderException) {
} catch (OCMProviderException|ConnectException) {
return $this->discover('http://' . $remote, $skipCache);
}
}

33
lib/unstable/Federation/ISignedCloudFederationProvider.php
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@ -0,0 +1,33 @@
<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace NCU\Federation;
use OCP\Federation\ICloudFederationProvider;
/**
* Interface ICloudFederationProvider
*
* Enable apps to create their own cloud federation provider
*
* @experimental 31.0.0
*/
interface ISignedCloudFederationProvider extends ICloudFederationProvider {
/**
* returns federationId in direct relation (as recipient or as author) of a sharedSecret
* the federationId must be the one at the remote end
*
* @param string $sharedSecret
* @param array $payload
*
* @experimental 31.0.0
* @return string
*/
public function getFederationIdFromSharedSecret(string $sharedSecret, array $payload): string;
}