nextcloud/apps/files_sharing/lib_share.php

110 lines
3.5 KiB
PHP

<?php
/**
* ownCloud
*
* @author Michael Gapczynski
* @copyright 2011 Michael Gapczynski GapczynskiM@gmail.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* This class manages shared items within the database.
*/
class OC_SHARE {
/**
* TODO notify user a file is being shared with them?
* Share an item, adds an entry into the database
* @param string $item
* @param user item shared with $uid_shared_with
*/
public function __construct($item, $uid_shared_with, $public = false) {
if ($item && OC_FILESYSTEM::file_exists($item) && OC_FILESYSTEM::is_readable($item)) {
$uid_owner = $_SESSION['user_id'];
if ($public) {
// TODO create token for public file
$token = sha1("$uid_owner-$item");
} else {
$query = OC_DB::prepare("INSERT INTO *PREFIX*sharing VALUES(?,?,?,?)");
foreach ($uid_shared_with as $uid) {
$query->execute(array($uid_owner, $uid, $item));
}
}
}
}
/**
* TODO complete lib_permissions
* Change the permissions of the specified item
* @param permissions $permissions
*/
public static function setPermissions($item, $uid_shared_with, $permissions) {
$query = OC_DB::prepare("UPDATE *PREFIX*sharing SET permissions = ? WHERE item = ? AND uid_shared_with = ? AND uid_owner = ?");
$query->execute(array($permissions, $item, $uid_shared_with, $_SESSION['user_id']));
}
/**
* Get the permissions for the specified item
* @param unknown_type $item
*/
public static function getPermissions($item, $uid_shared_with) {
$query = OC_DB::prepare("SELECT permissions FROM *PREFIX*sharing WHERE item = ? AND uid_shared_with = ? AND uid_owner = ? ");
return $query->execute(array($item, $uid_shared_with, $_SESSION['user_id']))->fetchAll();
}
/**
* Unshare the item, removes it from all users specified
* @param array $uid_shared_with
*/
public static function unshare($item, $uid_shared_with) {
$query = OC_DB::prepare("DELETE FROM *PREFIX*sharing WHERE item = ? AND uid_shared_with = ? AND uid_owner = ?");
foreach ($uid_shared_with as $uid) {
$query->execute(array($item, $uid, $_SESSION['user_id']));
}
}
/**
* Get the source location of the target item
* @return source path
*/
public static function getSource($target) {
$query = OC_DB::prepare("SELECT source FROM *PREFIX*sharing WHERE target = ? AND uid_shared_with = ?");
$result = $query->execute(array($target, $_SESSION['user_id']))->fetchAll();
return $result[0]['source'];
}
/**
* Get all items the user is sharing
* @return array
*/
public static function getSharedItems() {
$query = OC_DB::prepare("SELECT * FROM *PREFIX*sharing WHERE uid_owner = ?");
return $query->execute(array($_SESSION['user_id']))->fetchAll();
}
/**
* Get all items shared with the user
* @return array
*/
public static function getItemsSharedWith() {
$query = OC_DB::prepare("SELECT * FROM *PREFIX*sharing WHERE uid_shared_with = ?");
return $query->execute(array($_SESSION['user_id']))->fetchAll();
}
}
?>