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- <?php
- /**
- * @author Vincent Petry <pvince81@owncloud.com>
- *
- * @copyright Copyright (c) 2015, ownCloud, Inc.
- * @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_external\Service;
-
- use \OCP\IUserSession;
- use \OC\Files\Filesystem;
-
- use \OCA\Files_external\Lib\StorageConfig;
- use \OCA\Files_external\NotFoundException;
-
- /**
- * Service class to manage global external storages
- */
- class GlobalStoragesService extends StoragesService {
-
- /**
- * Write the storages to the configuration.
- *
- * @param array $storages map of storage id to storage config
- */
- public function writeConfig($storages) {
- // let the horror begin
- $mountPoints = [];
- foreach ($storages as $storageConfig) {
- $mountPoint = $storageConfig->getMountPoint();
- $oldBackendOptions = $storageConfig->getBackendOptions();
- $storageConfig->setBackendOptions(
- \OC_Mount_Config::encryptPasswords(
- $oldBackendOptions
- )
- );
-
- // system mount
- $rootMountPoint = '/$user/files/' . ltrim($mountPoint, '/');
-
- $applicableUsers = $storageConfig->getApplicableUsers();
- $applicableGroups = $storageConfig->getApplicableGroups();
- foreach ($applicableUsers as $applicable) {
- $this->addMountPoint(
- $mountPoints,
- \OC_Mount_Config::MOUNT_TYPE_USER,
- $applicable,
- $rootMountPoint,
- $storageConfig
- );
- }
-
- foreach ($applicableGroups as $applicable) {
- $this->addMountPoint(
- $mountPoints,
- \OC_Mount_Config::MOUNT_TYPE_GROUP,
- $applicable,
- $rootMountPoint,
- $storageConfig
- );
- }
-
- // if neither "applicableGroups" or "applicableUsers" were set, use "all" user
- if (empty($applicableUsers) && empty($applicableGroups)) {
- $this->addMountPoint(
- $mountPoints,
- \OC_Mount_Config::MOUNT_TYPE_USER,
- 'all',
- $rootMountPoint,
- $storageConfig
- );
- }
-
- // restore old backend options where the password was not encrypted,
- // because we don't want to change the state of the original object
- $storageConfig->setBackendOptions($oldBackendOptions);
- }
-
- \OC_Mount_Config::writeData(null, $mountPoints);
- }
-
- /**
- * Triggers $signal for all applicable users of the given
- * storage
- *
- * @param StorageConfig $storage storage data
- * @param string $signal signal to trigger
- */
- protected function triggerHooks(StorageConfig $storage, $signal) {
- $applicableUsers = $storage->getApplicableUsers();
- $applicableGroups = $storage->getApplicableGroups();
- if (empty($applicableUsers) && empty($applicableGroups)) {
- // raise for user "all"
- $this->triggerApplicableHooks(
- $signal,
- $storage->getMountPoint(),
- \OC_Mount_Config::MOUNT_TYPE_USER,
- ['all']
- );
- return;
- }
-
- $this->triggerApplicableHooks(
- $signal,
- $storage->getMountPoint(),
- \OC_Mount_Config::MOUNT_TYPE_USER,
- $applicableUsers
- );
- $this->triggerApplicableHooks(
- $signal,
- $storage->getMountPoint(),
- \OC_Mount_Config::MOUNT_TYPE_GROUP,
- $applicableGroups
- );
- }
-
- /**
- * Triggers signal_create_mount or signal_delete_mount to
- * accomodate for additions/deletions in applicableUsers
- * and applicableGroups fields.
- *
- * @param StorageConfig $oldStorage old storage config
- * @param StorageConfig $newStorage new storage config
- */
- protected function triggerChangeHooks(StorageConfig $oldStorage, StorageConfig $newStorage) {
- // if mount point changed, it's like a deletion + creation
- if ($oldStorage->getMountPoint() !== $newStorage->getMountPoint()) {
- $this->triggerHooks($oldStorage, Filesystem::signal_delete_mount);
- $this->triggerHooks($newStorage, Filesystem::signal_create_mount);
- return;
- }
-
- $userAdditions = array_diff($newStorage->getApplicableUsers(), $oldStorage->getApplicableUsers());
- $userDeletions = array_diff($oldStorage->getApplicableUsers(), $newStorage->getApplicableUsers());
- $groupAdditions = array_diff($newStorage->getApplicableGroups(), $oldStorage->getApplicableGroups());
- $groupDeletions = array_diff($oldStorage->getApplicableGroups(), $newStorage->getApplicableGroups());
-
- // if no applicable were set, raise a signal for "all"
- if (empty($oldStorage->getApplicableUsers()) && empty($oldStorage->getApplicableGroups())) {
- $this->triggerApplicableHooks(
- Filesystem::signal_delete_mount,
- $oldStorage->getMountPoint(),
- \OC_Mount_Config::MOUNT_TYPE_USER,
- ['all']
- );
- }
-
- // trigger delete for removed users
- $this->triggerApplicableHooks(
- Filesystem::signal_delete_mount,
- $oldStorage->getMountPoint(),
- \OC_Mount_Config::MOUNT_TYPE_USER,
- $userDeletions
- );
-
- // trigger delete for removed groups
- $this->triggerApplicableHooks(
- Filesystem::signal_delete_mount,
- $oldStorage->getMountPoint(),
- \OC_Mount_Config::MOUNT_TYPE_GROUP,
- $groupDeletions
- );
-
- // and now add the new users
- $this->triggerApplicableHooks(
- Filesystem::signal_create_mount,
- $newStorage->getMountPoint(),
- \OC_Mount_Config::MOUNT_TYPE_USER,
- $userAdditions
- );
-
- // and now add the new groups
- $this->triggerApplicableHooks(
- Filesystem::signal_create_mount,
- $newStorage->getMountPoint(),
- \OC_Mount_Config::MOUNT_TYPE_GROUP,
- $groupAdditions
- );
-
- // if no applicable, raise a signal for "all"
- if (empty($newStorage->getApplicableUsers()) && empty($newStorage->getApplicableGroups())) {
- $this->triggerApplicableHooks(
- Filesystem::signal_create_mount,
- $newStorage->getMountPoint(),
- \OC_Mount_Config::MOUNT_TYPE_USER,
- ['all']
- );
- }
- }
- }
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