116 lines
3.6 KiB
PHP
116 lines
3.6 KiB
PHP
<?php
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$installedVersion = OCP\Config::getAppValue('files_sharing', 'installed_version');
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if (version_compare($installedVersion, '0.5', '<')) {
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updateFilePermissions();
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}
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if (version_compare($installedVersion, '0.4', '<')) {
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removeSharedFolder();
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}
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// clean up oc_share table from files which are no longer exists
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if (version_compare($installedVersion, '0.3.5.6', '<')) {
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\OC\Files\Cache\Shared_Updater::fixBrokenSharesOnAppUpdate();
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}
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/**
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* it is no longer possible to share single files with delete permissions. User
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* should only be able to unshare single files but never to delete them.
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*/
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function updateFilePermissions($chunkSize = 99) {
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$query = OCP\DB::prepare('SELECT * FROM `*PREFIX*share` WHERE item_type = ?');
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$result = $query->execute(array('file'));
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$updatedRows = array();
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while ($row = $result->fetchRow()) {
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if ($row['permissions'] & \OCP\PERMISSION_DELETE) {
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$updatedRows[$row['id']] = (int)$row['permissions'] & ~\OCP\PERMISSION_DELETE;
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}
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}
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$chunkedPermissionList = array_chunk($updatedRows, $chunkSize, true);
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foreach ($chunkedPermissionList as $subList) {
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$statement = "UPDATE `*PREFIX*share` SET `permissions` = CASE `id` ";
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//update share table
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$ids = implode(',', array_keys($subList));
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foreach ($subList as $id => $permission) {
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$statement .= "WHEN " . $id . " THEN " . $permission . " ";
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}
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$statement .= ' END WHERE `id` IN (' . $ids . ')';
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$query = OCP\DB::prepare($statement);
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$query->execute();
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}
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}
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/**
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* update script for the removal of the logical "Shared" folder, we create physical "Shared" folder and
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* update the users file_target so that it doesn't make any difference for the user
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* @note parameters are just for testing, please ignore them
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*/
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function removeSharedFolder($mkdirs = true, $chunkSize = 99) {
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$query = OCP\DB::prepare('SELECT * FROM `*PREFIX*share`');
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$result = $query->execute();
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$view = new \OC\Files\View('/');
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$users = array();
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$shares = array();
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//we need to set up user backends
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OC_User::useBackend(new OC_User_Database());
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OC_Group::useBackend(new OC_Group_Database());
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OC_App::loadApps(array('authentication'));
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//we need to set up user backends, otherwise creating the shares will fail with "because user does not exist"
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while ($row = $result->fetchRow()) {
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//collect all user shares
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if ((int)$row['share_type'] === 0 && ($row['item_type'] === 'file' || $row['item_type'] === 'folder')) {
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$users[] = $row['share_with'];
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$shares[$row['id']] = $row['file_target'];
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} else if ((int)$row['share_type'] === 1 && ($row['item_type'] === 'file' || $row['item_type'] === 'folder')) {
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//collect all group shares
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$users = array_merge($users, \OC_group::usersInGroup($row['share_with']));
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$shares[$row['id']] = $row['file_target'];
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} else if ((int)$row['share_type'] === 2) {
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$shares[$row['id']] = $row['file_target'];
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}
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}
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$unique_users = array_unique($users);
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if (!empty($unique_users) && !empty($shares)) {
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// create folder Shared for each user
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if ($mkdirs) {
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foreach ($unique_users as $user) {
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\OC\Files\Filesystem::initMountPoints($user);
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if (!$view->file_exists('/' . $user . '/files/Shared')) {
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$view->mkdir('/' . $user . '/files/Shared');
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}
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}
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}
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$chunkedShareList = array_chunk($shares, $chunkSize, true);
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foreach ($chunkedShareList as $subList) {
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$statement = "UPDATE `*PREFIX*share` SET `file_target` = CASE `id` ";
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//update share table
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$ids = implode(',', array_keys($subList));
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foreach ($subList as $id => $target) {
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$statement .= "WHEN " . $id . " THEN '/Shared" . $target . "' ";
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}
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$statement .= ' END WHERE `id` IN (' . $ids . ')';
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$query = OCP\DB::prepare($statement);
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$query->execute(array());
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}
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}
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}
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