137 lines
4.4 KiB
PHP
137 lines
4.4 KiB
PHP
<?php
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/**
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* ownCloud
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*
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* @author Michael Gapczynski
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* @copyright 2011 Michael Gapczynski GapczynskiM@gmail.com
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library 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
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* This class manages shared items within the database.
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*/
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class OC_SHARE {
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/**
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* TODO notify user a file is being shared with them?
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* Share an item, adds an entry into the database
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* @param string $item
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* @param user item shared with $uid_shared_with
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*/
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public function __construct($item, $uid_shared_with, $public = false) {
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if ($item && OC_FILESYSTEM::file_exists($item) && OC_FILESYSTEM::is_readable($item)) {
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$uid_owner = $_SESSION['user_id'];
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if ($public) {
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// TODO create token for public file
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$token = sha1("$uid_owner-$item");
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} else {
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$query = OC_DB::prepare("INSERT INTO *PREFIX*sharing VALUES(?,?,?,?)");
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foreach ($uid_shared_with as $uid) {
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$query->execute(array($uid_owner, $uid, $item));
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}
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}
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}
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}
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/**
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* TODO complete lib_permissions
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* Change the permissions of the specified item
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* @param permissions $permissions
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*/
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public static function setPermissions($item, $uid_shared_with, $permissions) {
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$query = OC_DB::prepare("UPDATE *PREFIX*sharing SET permissions = ? WHERE item = ? AND uid_shared_with = ? AND uid_owner = ?");
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$query->execute(array($permissions, $item, $uid_shared_with, $_SESSION['user_id']));
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}
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/**
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* Get the permissions for the specified item
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* @param unknown_type $item
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*/
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public static function getPermissions($item, $uid_shared_with) {
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$query = OC_DB::prepare("SELECT permissions FROM *PREFIX*sharing WHERE item = ? AND uid_shared_with = ? AND uid_owner = ? ");
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return $query->execute(array($item, $uid_shared_with, $_SESSION['user_id']))->fetchAll();
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}
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/**
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* Unshare the item, removes it from all users specified
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* @param array $uid_shared_with
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*/
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public static function unshare($item, $uid_shared_with) {
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$query = OC_DB::prepare("DELETE FROM *PREFIX*sharing WHERE item = ? AND uid_shared_with = ? AND uid_owner = ?");
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foreach ($uid_shared_with as $uid) {
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$query->execute(array($item, $uid, $_SESSION['user_id']));
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}
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}
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/**
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* Get the source location of the target item
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* @param $target
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* @return source path
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*/
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public static function getSource($target) {
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// Remove any trailing '/'
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$target = rtrim($target, "/");
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$query = OC_DB::prepare("SELECT source FROM *PREFIX*sharing WHERE target = ? AND uid_shared_with = ? LIMIT 1");
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$result = $query->execute(array($target, $_SESSION['user_id']))->fetchAll();
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if (count($result) > 0) {
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return $result[0]['source'];
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} else {
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// Check if the parent directory of this target is shared
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$parentDir = dirname($target);
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if ($parentDir != "" && $parentDir != "/" && $parentDir != ".") {
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$result = OC_SHARE::getSource($parentDir);
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if ($result) {
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return $result."/".basename($target);
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} else {
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return false;
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}
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} else {
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return false;
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}
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}
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}
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/**
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* Set the target location to a new value
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* @param $oldTarget The current target location
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* @param $newTarget The new target location
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*/
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public static function setTarget($oldTarget, $newTarget) {
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$query = OC_DB::prepare("UPDATE *PREFIX*sharing SET target = ? WHERE target = ? AND uid_shared_with = ?");
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$query->execute(array($newTarget, $oldTarget, $_SESSION['user_id']));
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}
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/**
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* Get all items the user is sharing
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* @return array
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*/
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public static function getSharedItems() {
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$query = OC_DB::prepare("SELECT * FROM *PREFIX*sharing WHERE uid_owner = ?");
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return $query->execute(array($_SESSION['user_id']))->fetchAll();
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}
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/**
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* Get all items shared with the user
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* @return array
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*/
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public static function getItemsSharedWith() {
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$query = OC_DB::prepare("SELECT * FROM *PREFIX*sharing WHERE uid_shared_with = ?");
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return $query->execute(array($_SESSION['user_id']))->fetchAll();
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}
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}
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?>
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