107 lines
3.9 KiB
PHP
107 lines
3.9 KiB
PHP
<?php
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/**
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* @author Björn Schießle <schiessle@owncloud.com>
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* @author Joas Schilling <nickvergessen@owncloud.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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*
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* @copyright Copyright (c) 2015, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code 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, version 3,
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* as published by the Free Software Foundation.
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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, version 3,
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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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$installedVersion = \OC::$server->getConfig()->getAppValue('files', 'installed_version');
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$ocVersion = explode('.', \OC::$server->getSystemConfig()->getValue('version'));
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/**
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* In case encryption was not enabled, we accidently set encrypted = 1 for
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* files inside mount points, since 8.1.0. This breaks opening the files in
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* 8.1.1 because we fixed the code that checks if a file is encrypted.
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* In order to fix the file, we need to reset the flag of the file. However,
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* the flag might be set because the file is in fact encrypted because it was
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* uploaded at a time where encryption was enabled.
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*
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* So we can only do this when:
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* - Current version of ownCloud before the update is 8.1.0 or 8.2.0.(0-2)
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* - Encryption is disabled
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* - files_encryption is not known in the app config
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*
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* If the first two are not the case, we are save. However, if files_encryption
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* values exist in the config, we might have a false negative here.
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* Now if there is no file with unencrypted size greater 0, that means there are
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* no files that are still encrypted with "files_encryption" encryption. So we
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* can also safely reset the flag here.
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*
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* If this is not the case, we go with "better save then sorry" and don't change
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* the flag but write a message to the ownCloud log file.
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*/
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/**
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* @param \OCP\IDBConnection $conn
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*/
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function owncloud_reset_encrypted_flag(\OCP\IDBConnection $conn) {
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$conn->executeUpdate('UPDATE `*PREFIX*filecache` SET `encrypted` = 0 WHERE `encrypted` = 1');
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}
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// Current version of ownCloud before the update is 8.1.0 or 8.2.0.(0-2)
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if ($installedVersion === '1.1.9' && (
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// 8.1.0.x
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(((int) $ocVersion[0]) === 8 && ((int) $ocVersion[1]) === 1 && ((int) $ocVersion[2]) === 0)
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||
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// < 8.2.0.3
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(((int) $ocVersion[0]) === 8 && ((int) $ocVersion[1]) === 2 && ((int) $ocVersion[2]) === 0 && ((int) $ocVersion[3]) < 3)
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)) {
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// Encryption is not enabled
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if (!\OC::$server->getEncryptionManager()->isEnabled()) {
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$conn = \OC::$server->getDatabaseConnection();
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// Old encryption is not known in app config
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$oldEncryption = \OC::$server->getConfig()->getAppKeys('files_encryption');
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if (empty($oldEncryption)) {
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owncloud_reset_encrypted_flag($conn);
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} else {
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$query = $conn->prepare('SELECT * FROM `*PREFIX*filecache` WHERE `encrypted` = 1 AND `unencrypted_size` > 0', 1);
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$query->execute();
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$empty = $query->fetch();
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if (empty($empty)) {
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owncloud_reset_encrypted_flag($conn);
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} else {
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/**
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* Sorry in case you are a false positive, but we are not 100% that
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* you don't have any encrypted files anymore, so we can not reset
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* the value safely
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*/
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\OC::$server->getLogger()->warning(
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'If you have a problem with files not being accessible and '
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. 'you are not using encryption, please have a look at the following'
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. 'issue: {issue}',
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[
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'issue' => 'https://github.com/owncloud/core/issues/17846',
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]
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);
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}
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}
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}
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}
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/**
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* migrate old constant DEBUG to new config value 'debug'
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*
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* TODO: remove this in ownCloud 8.3
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*/
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if(defined('DEBUG') && DEBUG === true) {
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\OC::$server->getConfig()->setSystemValue('debug', true);
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}
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