nextcloud/apps/files_versions/lib/Hooks.php

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<?php
/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
*
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Björn Schießle <bjoern@schiessle.org>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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* @author Sam Tuke <mail@samtuke.com>
*
* @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/>
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*
*/
/**
* This class contains all hooks.
*/
namespace OCA\Files_Versions;
use OC\Files\Filesystem;
use OC\Files\Mount\MoveableMount;
use OC\Files\View;
use OCP\Util;
class Hooks {
public static function connectHooks() {
// Listen to write signals
Util::connectHook('OC_Filesystem', 'write', Hooks::class, 'write_hook');
// Listen to delete and rename signals
Util::connectHook('OC_Filesystem', 'post_delete', Hooks::class, 'remove_hook');
Util::connectHook('OC_Filesystem', 'delete', Hooks::class, 'pre_remove_hook');
Util::connectHook('OC_Filesystem', 'post_rename', Hooks::class, 'rename_hook');
Util::connectHook('OC_Filesystem', 'post_copy', Hooks::class, 'copy_hook');
Util::connectHook('OC_Filesystem', 'rename', Hooks::class, 'pre_renameOrCopy_hook');
Util::connectHook('OC_Filesystem', 'copy', Hooks::class, 'pre_renameOrCopy_hook');
}
/**
* listen to write event.
*/
public static function write_hook($params) {
$path = $params[Filesystem::signal_param_path];
if ($path !== '') {
Storage::store($path);
}
}
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/**
* Erase versions of deleted file
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* @param array $params
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*
* This function is connected to the delete signal of OC_Filesystem
* cleanup the versions directory if the actual file gets deleted
*/
public static function remove_hook($params) {
$path = $params[Filesystem::signal_param_path];
if ($path !== '') {
Storage::delete($path);
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}
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}
/**
* mark file as "deleted" so that we can clean up the versions if the file is gone
* @param array $params
*/
public static function pre_remove_hook($params) {
$path = $params[Filesystem::signal_param_path];
if ($path !== '') {
Storage::markDeletedFile($path);
}
}
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/**
* rename/move versions of renamed/moved files
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* @param array $params array with oldpath and newpath
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*
* This function is connected to the rename signal of OC_Filesystem and adjust the name and location
* of the stored versions along the actual file
*/
public static function rename_hook($params) {
$oldpath = $params['oldpath'];
$newpath = $params['newpath'];
if ($oldpath !== '' && $newpath !== '') {
Storage::renameOrCopy($oldpath, $newpath, 'rename');
}
}
/**
* copy versions of copied files
* @param array $params array with oldpath and newpath
*
* This function is connected to the copy signal of OC_Filesystem and copies the
* the stored versions to the new location
*/
public static function copy_hook($params) {
$oldpath = $params['oldpath'];
$newpath = $params['newpath'];
if ($oldpath !== '' && $newpath !== '') {
Storage::renameOrCopy($oldpath, $newpath, 'copy');
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}
}
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/**
* Remember owner and the owner path of the source file.
* If the file already exists, then it was a upload of a existing file
* over the web interface and we call Storage::store() directly
*
* @param array $params array with oldpath and newpath
*
*/
public static function pre_renameOrCopy_hook($params) {
// if we rename a movable mount point, then the versions don't have
// to be renamed
$absOldPath = Filesystem::normalizePath('/' . \OC_User::getUser() . '/files' . $params['oldpath']);
$manager = Filesystem::getMountManager();
$mount = $manager->find($absOldPath);
$internalPath = $mount->getInternalPath($absOldPath);
if ($internalPath === '' and $mount instanceof MoveableMount) {
return;
}
$view = new View(\OC_User::getUser() . '/files');
if ($view->file_exists($params['newpath'])) {
Storage::store($params['newpath']);
} else {
Storage::setSourcePathAndUser($params['oldpath']);
}
}
}