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@@ -0,0 +1,134 @@
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+<?php
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+
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+declare(strict_types=1);
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+
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+/**
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+ * @copyright Copyright (c) 2020 Arthur Schiwon <blizzz@arthur-schiwon.de>
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+ *
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+ * @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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+ *
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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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+
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+namespace OC\Core\Command\Maintenance;
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+
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+use Symfony\Component\Console\Command\Command;
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+use OCP\DB\QueryBuilder\IQueryBuilder;
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+use OCP\IDBConnection;
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+use OCP\IUser;
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+use OCP\IUserManager;
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+use OCP\Share\IManager;
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+use Symfony\Component\Console\Helper\ProgressBar;
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+use Symfony\Component\Console\Input\InputArgument;
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+use Symfony\Component\Console\Input\InputInterface;
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+use Symfony\Component\Console\Input\InputOption;
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+use Symfony\Component\Console\Output\OutputInterface;
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+
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+class RepairShareOwnership extends Command {
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+ private IDBConnection $dbConnection;
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+ private IManager $shareManager;
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+ private IUserManager $userManager;
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+
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+ public function __construct(
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+ IDBConnection $dbConnection,
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+ IManager $shareManager,
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+ IUserManager $userManager
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+ ) {
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+ $this->dbConnection = $dbConnection;
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+ $this->shareManager = $shareManager;
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+ $this->userManager = $userManager;
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+ parent::__construct();
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+ }
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+
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+ protected function configure() {
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+ $this
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+ ->setName('maintenance:repair-share-owner')
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+ ->setDescription('repair invalid share-owner entries in the database')
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+ ->addOption('dry-run', null, InputOption::VALUE_NONE, "List detected issues without fixing them")
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+ ->addArgument('user', InputArgument::OPTIONAL, "User to fix incoming shares for, if omitted all users will be fixed");
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+ }
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+
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+ protected function execute(InputInterface $input, OutputInterface $output): int {
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+ $dryRun = $input->getOption('dry-run');
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+ $userId = $input->getArgument('user');
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+ if ($userId) {
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+ $user = $this->userManager->get($userId);
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+ if (!$user) {
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+ $output->writeln("<error>user $userId not found</error>");
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+ return 1;
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+ }
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+ $found = $this->repairWrongShareOwnershipForUser($user, $dryRun);
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+ } else {
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+ $found = [];
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+ $userCount = $this->userManager->countSeenUsers();
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+ $progress = new ProgressBar($output, $userCount);
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+ $this->userManager->callForSeenUsers(function (IUser $user) use ($dryRun, &$found, $progress) {
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+ $progress->advance();
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+ $found = array_merge($found, $this->repairWrongShareOwnershipForUser($user, $dryRun));
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+ });
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+ $progress->finish();
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+ $output->writeln("");
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+ }
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+ foreach ($found as $item) {
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+ $output->writeln($item);
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+ }
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+ return 0;
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+ }
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+
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+ protected function repairWrongShareOwnershipForUser(IUser $user, bool $dryRun = true): array {
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+ $qb = $this->dbConnection->getQueryBuilder();
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+ $brokenShare = $qb
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+ ->select('s.id', 'm.user_id', 's.uid_owner', 's.uid_initiator', 's.share_with', 's.share_type')
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+ ->from('share', 's')
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+ ->join('s', 'filecache', 'f', $qb->expr()->eq('s.item_source', $qb->expr()->castColumn('f.fileid', IQueryBuilder::PARAM_STR)))
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+ ->join('s', 'mounts', 'm', $qb->expr()->eq('f.storage', 'm.storage_id'))
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+ ->where($qb->expr()->neq('m.user_id', 's.uid_owner'))
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+ ->andWhere($qb->expr()->eq($qb->func()->concat($qb->expr()->literal('/'), 'm.user_id', $qb->expr()->literal('/')), 'm.mount_point'))
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+ ->andWhere($qb->expr()->eq('s.share_with', $qb->createNamedParameter($user->getUID())))
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+ ->executeQuery()
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+ ->fetchAll();
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+
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+ $found = [];
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+
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+ foreach ($brokenShare as $queryResult) {
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+ $shareId = (int) $queryResult['id'];
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+ $shareType = (int) $queryResult['share_type'];
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+ $initiator = $queryResult['uid_initiator'];
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+ $receiver = $queryResult['share_with'];
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+ $owner = $queryResult['uid_owner'];
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+ $mountOwner = $queryResult['user_id'];
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+
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+ $found[] = "Found share from $initiator to $receiver, owned by $owner, that should be owned by $mountOwner";
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+
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+ if ($dryRun) {
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+ continue;
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+ }
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+
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+ $provider = $this->shareManager->getProviderForType($shareType);
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+ $share = $provider->getShareById($shareId);
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+
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+ if ($share->getShareOwner() === $share->getSharedBy()) {
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+ $share->setSharedBy($mountOwner);
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+ }
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+ $share->setShareOwner($mountOwner);
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+
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+ $this->shareManager->updateShare($share);
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+ }
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+
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+ return $found;
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+ }
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+}
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