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<?php
/**
* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
* SPDX-License-Identifier: AGPL-3.0-only
*/
namespace OCA\Files_External\Config;
use OC\Files\Cache\Storage;
use OC\Files\Storage\FailedStorage;
use OC\Files\Storage\Wrapper\Availability;
use OC\Files\Storage\Wrapper\KnownMtime;
use OCA\Files_External\Lib\PersonalMount;
use OCA\Files_External\Lib\StorageConfig;
use OCA\Files_External\MountConfig;
use OCA\Files_External\Service\UserGlobalStoragesService;
use OCA\Files_External\Service\UserStoragesService;
use OCP\Files\Config\IMountProvider;
use OCP\Files\ObjectStore\IObjectStore;
use OCP\Files\Storage\IConstructableStorage;
use OCP\Files\Storage\IStorage;
use OCP\Files\Storage\IStorageFactory;
use OCP\Files\StorageNotAvailableException;
use OCP\IUser;
use OCP\Server;
use Psr\Clock\ClockInterface;
use Psr\Log\LoggerInterface;
/**
* Make the old files_external config work with the new public mount config api
*/
class ConfigAdapter implements IMountProvider {
public function __construct(
private UserStoragesService $userStoragesService,
private UserGlobalStoragesService $userGlobalStoragesService,
private ClockInterface $clock,
) {
}
/**
* Process storage ready for mounting
*
* @throws \OCP\AppFramework\QueryException
*/
private function prepareStorageConfig(StorageConfig &$storage, IUser $user): void {
foreach ($storage->getBackendOptions() as $option => $value) {
$storage->setBackendOption($option, MountConfig::substitutePlaceholdersInConfig($value, $user->getUID()));
}
$objectStore = $storage->getBackendOption('objectstore');
if ($objectStore) {
$objectClass = $objectStore['class'];
if (!is_subclass_of($objectClass, IObjectStore::class)) {
throw new \InvalidArgumentException('Invalid object store');
}
$storage->setBackendOption('objectstore', new $objectClass($objectStore));
}
$storage->getAuthMechanism()->manipulateStorageConfig($storage, $user);
$storage->getBackend()->manipulateStorageConfig($storage, $user);
}
/**
* Construct the storage implementation
*
* @param StorageConfig $storageConfig
*/
private function constructStorage(StorageConfig $storageConfig): IStorage {
$class = $storageConfig->getBackend()->getStorageClass();
if (!is_a($class, IConstructableStorage::class, true)) {
Server::get(LoggerInterface::class)->warning('Building a storage not implementing IConstructableStorage is deprecated since 31.0.0', ['class' => $class]);
}
$storage = new $class($storageConfig->getBackendOptions());
// auth mechanism should fire first
$storage = $storageConfig->getBackend()->wrapStorage($storage);
$storage = $storageConfig->getAuthMechanism()->wrapStorage($storage);
return $storage;
}
/**
* Get all mountpoints applicable for the user
*
* @return \OCP\Files\Mount\IMountPoint[]
*/
public function getMountsForUser(IUser $user, IStorageFactory $loader) {
$this->userStoragesService->setUser($user);
$this->userGlobalStoragesService->setUser($user);
$storageConfigs = $this->userGlobalStoragesService->getAllStoragesForUser();
$storages = array_map(function (StorageConfig $storageConfig) use ($user) {
try {
$this->prepareStorageConfig($storageConfig, $user);
return $this->constructStorage($storageConfig);
} catch (\Exception $e) {
// propagate exception into filesystem
return new FailedStorage(['exception' => $e]);
}
}, $storageConfigs);
Storage::getGlobalCache()->loadForStorageIds(array_map(function (IStorage $storage) {
return $storage->getId();
}, $storages));
$availableStorages = array_map(function (IStorage $storage, StorageConfig $storageConfig): IStorage {
try {
$availability = $storage->getAvailability();
if (!$availability['available'] && !Availability::shouldRecheck($availability)) {
$storage = new FailedStorage([
'exception' => new StorageNotAvailableException('Storage with mount id ' . $storageConfig->getId() . ' is not available')
]);
}
} catch (\Exception $e) {
// propagate exception into filesystem
$storage = new FailedStorage(['exception' => $e]);
}
return $storage;
}, $storages, $storageConfigs);
$mounts = array_map(function (StorageConfig $storageConfig, IStorage $storage) use ($user, $loader) {
$storage->setOwner($user->getUID());
if ($storageConfig->getType() === StorageConfig::MOUNT_TYPE_PERSONAL) {
return new PersonalMount(
$this->userStoragesService,
$storageConfig,
$storageConfig->getId(),
new KnownMtime([
'storage' => $storage,
'clock' => $this->clock,
]),
'/' . $user->getUID() . '/files' . $storageConfig->getMountPoint(),
null,
$loader,
$storageConfig->getMountOptions(),
$storageConfig->getId()
);
} else {
return new SystemMountPoint(
$storageConfig,
$storage,
'/' . $user->getUID() . '/files' . $storageConfig->getMountPoint(),
null,
$loader,
$storageConfig->getMountOptions(),
$storageConfig->getId()
);
}
}, $storageConfigs, $availableStorages);
$this->userStoragesService->resetUser();
$this->userGlobalStoragesService->resetUser();
return $mounts;
}
}
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