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-rw-r--r--apps/files_sharing/lib/Migration.php308
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diff --git a/apps/files_sharing/lib/Migration.php b/apps/files_sharing/lib/Migration.php
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--- a/apps/files_sharing/lib/Migration.php
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-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Björn Schießle <bjoern@schiessle.org>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <robin@icewind.nl>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OCA\Files_Sharing;
-
-use Doctrine\DBAL\Connection;
-use OCP\ICache;
-use OCP\IConfig;
-use OCP\IDBConnection;
-use OC\Cache\CappedMemoryCache;
-
-/**
- * Class Migration
- *
- * @package OCA\Files_Sharing
- * @group DB
- */
-class Migration {
-
- /** @var IDBConnection */
- private $connection;
-
- /** @var IConfig */
- private $config;
-
- /** @var ICache with all shares we already saw */
- private $shareCache;
-
- /** @var string */
- private $table = 'share';
-
- public function __construct(IDBConnection $connection, IConfig $config) {
- $this->connection = $connection;
- $this->config = $config;
-
- // We cache up to 10k share items (~20MB)
- $this->shareCache = new CappedMemoryCache(10000);
- }
-
- /**
- * move all re-shares to the owner in order to have a flat list of shares
- * upgrade from oC 8.2 to 9.0 with the new sharing
- */
- public function removeReShares() {
-
- $stmt = $this->getReShares();
-
- $owners = [];
- while($share = $stmt->fetch()) {
-
- $this->shareCache[$share['id']] = $share;
-
- $owners[$share['id']] = [
- 'owner' => $this->findOwner($share),
- 'initiator' => $share['uid_owner'],
- 'type' => $share['share_type'],
- ];
-
- if (count($owners) === 1000) {
- $this->updateOwners($owners);
- $owners = [];
- }
- }
-
- $stmt->closeCursor();
-
- if (count($owners)) {
- $this->updateOwners($owners);
- }
- }
-
- /**
- * update all owner information so that all shares have an owner
- * and an initiator for the upgrade from oC 8.2 to 9.0 with the new sharing
- */
- public function updateInitiatorInfo() {
- while (true) {
- $shares = $this->getMissingInitiator(1000);
-
- if (empty($shares)) {
- break;
- }
-
- $owners = [];
- foreach ($shares as $share) {
- $owners[$share['id']] = [
- 'owner' => $share['uid_owner'],
- 'initiator' => $share['uid_owner'],
- 'type' => $share['share_type'],
- ];
- }
- $this->updateOwners($owners);
- }
- }
-
- /**
- * this was dropped for Nextcloud 11 in favour of share by mail
- */
- public function removeSendMailOption() {
- $this->config->deleteAppValue('core', 'shareapi_allow_mail_notification');
- $this->config->deleteAppValue('core', 'shareapi_allow_public_notification');
- }
-
- public function addPasswordColumn() {
- $query = $this->connection->getQueryBuilder();
- $query
- ->update('share')
- ->set('password', 'share_with')
- ->where($query->expr()->eq('share_type', $query->createNamedParameter(\OCP\Share::SHARE_TYPE_LINK)))
- ->andWhere($query->expr()->isNotNull('share_with'));
- $query->execute();
-
- $clearQuery = $this->connection->getQueryBuilder();
- $clearQuery
- ->update('share')->set('share_with', $clearQuery->createNamedParameter(null))
- ->where($clearQuery->expr()->eq('share_type', $clearQuery->createNamedParameter(\OCP\Share::SHARE_TYPE_LINK)));
-
- $clearQuery->execute();
-
- }
-
- /**
- * find the owner of a re-shared file/folder
- *
- * @param array $share
- * @return array
- */
- private function findOwner($share) {
- $currentShare = $share;
- while(!is_null($currentShare['parent'])) {
- if (isset($this->shareCache[$currentShare['parent']])) {
- $currentShare = $this->shareCache[$currentShare['parent']];
- } else {
- $currentShare = $this->getShare((int)$currentShare['parent']);
- $this->shareCache[$currentShare['id']] = $currentShare;
- }
- }
-
- return $currentShare['uid_owner'];
- }
-
- /**
- * Get $n re-shares from the database
- *
- * @param int $n The max number of shares to fetch
- * @return \Doctrine\DBAL\Driver\Statement
- */
- private function getReShares() {
- $query = $this->connection->getQueryBuilder();
- $query->select(['id', 'parent', 'uid_owner', 'share_type'])
- ->from($this->table)
- ->where($query->expr()->in(
- 'share_type',
- $query->createNamedParameter(
- [
- \OCP\Share::SHARE_TYPE_USER,
- \OCP\Share::SHARE_TYPE_GROUP,
- \OCP\Share::SHARE_TYPE_LINK,
- \OCP\Share::SHARE_TYPE_REMOTE,
- ],
- Connection::PARAM_INT_ARRAY
- )
- ))
- ->andWhere($query->expr()->in(
- 'item_type',
- $query->createNamedParameter(
- ['file', 'folder'],
- Connection::PARAM_STR_ARRAY
- )
- ))
- ->andWhere($query->expr()->isNotNull('parent'))
- ->orderBy('id', 'asc');
- return $query->execute();
-
-
- $shares = $result->fetchAll();
- $result->closeCursor();
-
- $ordered = [];
- foreach ($shares as $share) {
- $ordered[(int)$share['id']] = $share;
- }
-
- return $ordered;
- }
-
- /**
- * Get $n re-shares from the database
- *
- * @param int $n The max number of shares to fetch
- * @return array
- */
- private function getMissingInitiator($n = 1000) {
- $query = $this->connection->getQueryBuilder();
- $query->select(['id', 'uid_owner', 'share_type'])
- ->from($this->table)
- ->where($query->expr()->in(
- 'share_type',
- $query->createNamedParameter(
- [
- \OCP\Share::SHARE_TYPE_USER,
- \OCP\Share::SHARE_TYPE_GROUP,
- \OCP\Share::SHARE_TYPE_LINK,
- \OCP\Share::SHARE_TYPE_REMOTE,
- ],
- Connection::PARAM_INT_ARRAY
- )
- ))
- ->andWhere($query->expr()->in(
- 'item_type',
- $query->createNamedParameter(
- ['file', 'folder'],
- Connection::PARAM_STR_ARRAY
- )
- ))
- ->andWhere($query->expr()->isNull('uid_initiator'))
- ->orderBy('id', 'asc')
- ->setMaxResults($n);
- $result = $query->execute();
- $shares = $result->fetchAll();
- $result->closeCursor();
-
- $ordered = [];
- foreach ($shares as $share) {
- $ordered[(int)$share['id']] = $share;
- }
-
- return $ordered;
- }
-
- /**
- * get a specific share
- *
- * @param int $id
- * @return array
- */
- private function getShare($id) {
- $query = $this->connection->getQueryBuilder();
- $query->select(['id', 'parent', 'uid_owner'])
- ->from($this->table)
- ->where($query->expr()->eq('id', $query->createNamedParameter($id)));
- $result = $query->execute();
- $share = $result->fetchAll();
- $result->closeCursor();
-
- return $share[0];
- }
-
- /**
- * update database with the new owners
- *
- * @param array $owners
- * @throws \Exception
- */
- private function updateOwners($owners) {
-
- $this->connection->beginTransaction();
-
- try {
-
- foreach ($owners as $id => $owner) {
- $query = $this->connection->getQueryBuilder();
- $query->update($this->table)
- ->set('uid_owner', $query->createNamedParameter($owner['owner']))
- ->set('uid_initiator', $query->createNamedParameter($owner['initiator']));
-
-
- if ((int)$owner['type'] !== \OCP\Share::SHARE_TYPE_LINK) {
- $query->set('parent', $query->createNamedParameter(null));
- }
-
- $query->where($query->expr()->eq('id', $query->createNamedParameter($id)));
-
- $query->execute();
- }
-
- $this->connection->commit();
-
- } catch (\Exception $e) {
- $this->connection->rollBack();
- throw $e;
- }
-
- }
-
-}