432 lines
12 KiB
PHP
432 lines
12 KiB
PHP
<?php
|
|
/**
|
|
* ownCloud
|
|
*
|
|
* @author Michael Gapczynski
|
|
* @copyright 2011 Michael Gapczynski mtgap@owncloud.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/>.
|
|
*
|
|
*/
|
|
|
|
namespace OC\Files\Storage;
|
|
|
|
/**
|
|
* Convert target path to source path and pass the function call to the correct storage provider
|
|
*/
|
|
class Shared extends \OC\Files\Storage\Common {
|
|
|
|
private $sharedFolder;
|
|
private $files = array();
|
|
|
|
public function __construct($arguments) {
|
|
$this->sharedFolder = $arguments['sharedFolder'];
|
|
}
|
|
|
|
public function getId(){
|
|
return 'shared::' . $this->sharedFolder;
|
|
}
|
|
|
|
/**
|
|
* @brief Get the source file path, permissions, and owner for a shared file
|
|
* @param string Shared target file path
|
|
* @return Returns array with the keys path, permissions, and owner or false if not found
|
|
*/
|
|
private function getFile($target) {
|
|
if (!isset($this->files[$target])) {
|
|
$source = \OC_Share_Backend_File::getSource($target);
|
|
if ($source) {
|
|
$source['path'] = '/'.$source['uid_owner'].'/'.$source['path'];
|
|
}
|
|
$this->files[$target] = $source;
|
|
}
|
|
return $this->files[$target];
|
|
}
|
|
|
|
/**
|
|
* @brief Get the source file path for a shared file
|
|
* @param string Shared target file path
|
|
* @return string source file path or false if not found
|
|
*/
|
|
private function getSourcePath($target) {
|
|
$source = $this->getFile($target);
|
|
if ($source) {
|
|
\OC\Files\Filesystem::initMountPoints($source['uid_owner']);
|
|
return $source['path'];
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @brief Get the permissions granted for a shared file
|
|
* @param string Shared target file path
|
|
* @return int CRUDS permissions granted or false if not found
|
|
*/
|
|
public function getPermissions($target) {
|
|
$source = $this->getFile($target);
|
|
if ($source) {
|
|
return $source['permissions'];
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function mkdir($path) {
|
|
if ($path == '' || $path == '/' || !$this->isCreatable(dirname($path))) {
|
|
return false;
|
|
} else if ($source = $this->getSourcePath($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->mkdir($internalPath);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function rmdir($path) {
|
|
if (($source = $this->getSourcePath($path)) && $this->isDeletable($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->rmdir($internalPath);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function opendir($path) {
|
|
if ($path == '' || $path == '/') {
|
|
$files = \OCP\Share::getItemsSharedWith('file', \OC_Share_Backend_Folder::FORMAT_OPENDIR);
|
|
\OC_FakeDirStream::$dirs['shared'] = $files;
|
|
return opendir('fakedir://shared');
|
|
} else if ($source = $this->getSourcePath($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->opendir($internalPath);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function is_dir($path) {
|
|
if ($path == '' || $path == '/') {
|
|
return true;
|
|
} else if ($source = $this->getSourcePath($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->is_dir($internalPath);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function is_file($path) {
|
|
if ($source = $this->getSourcePath($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->is_file($internalPath);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function stat($path) {
|
|
if ($path == '' || $path == '/') {
|
|
$stat['size'] = $this->filesize($path);
|
|
$stat['mtime'] = $this->filemtime($path);
|
|
return $stat;
|
|
} else if ($source = $this->getSourcePath($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->stat($internalPath);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function filetype($path) {
|
|
if ($path == '' || $path == '/') {
|
|
return 'dir';
|
|
} else if ($source = $this->getSourcePath($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->filetype($internalPath);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function filesize($path) {
|
|
if ($path == '' || $path == '/' || $this->is_dir($path)) {
|
|
return 0;
|
|
} else if ($source = $this->getSourcePath($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->filesize($internalPath);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function isCreatable($path) {
|
|
if ($path == '') {
|
|
return false;
|
|
}
|
|
return ($this->getPermissions($path) & \OCP\PERMISSION_CREATE);
|
|
}
|
|
|
|
public function isReadable($path) {
|
|
return $this->file_exists($path);
|
|
}
|
|
|
|
public function isUpdatable($path) {
|
|
if ($path == '') {
|
|
return false;
|
|
}
|
|
return ($this->getPermissions($path) & \OCP\PERMISSION_UPDATE);
|
|
}
|
|
|
|
public function isDeletable($path) {
|
|
if ($path == '') {
|
|
return true;
|
|
}
|
|
return ($this->getPermissions($path) & \OCP\PERMISSION_DELETE);
|
|
}
|
|
|
|
public function isSharable($path) {
|
|
if ($path == '') {
|
|
return false;
|
|
}
|
|
return ($this->getPermissions($path) & \OCP\PERMISSION_SHARE);
|
|
}
|
|
|
|
public function file_exists($path) {
|
|
if ($path == '' || $path == '/') {
|
|
return true;
|
|
} else if ($source = $this->getSourcePath($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->file_exists($internalPath);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function filemtime($path) {
|
|
if ($path == '' || $path == '/') {
|
|
$mtime = 0;
|
|
if ($dh = $this->opendir($path)) {
|
|
while (($filename = readdir($dh)) !== false) {
|
|
$tempmtime = $this->filemtime($filename);
|
|
if ($tempmtime > $mtime) {
|
|
$mtime = $tempmtime;
|
|
}
|
|
}
|
|
}
|
|
return $mtime;
|
|
} else {
|
|
$source = $this->getSourcePath($path);
|
|
if ($source) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->filemtime($internalPath);
|
|
}
|
|
}
|
|
}
|
|
|
|
public function file_get_contents($path) {
|
|
$source = $this->getSourcePath($path);
|
|
if ($source) {
|
|
$info = array(
|
|
'target' => $this->sharedFolder.$path,
|
|
'source' => $source,
|
|
);
|
|
\OCP\Util::emitHook('\OC\Files\Storage\Shared', 'file_get_contents', $info);
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->file_get_contents($internalPath);
|
|
}
|
|
}
|
|
|
|
public function file_put_contents($path, $data) {
|
|
if ($source = $this->getSourcePath($path)) {
|
|
// Check if permission is granted
|
|
if (($this->file_exists($path) && !$this->isUpdatable($path)) || ($this->is_dir($path) && !$this->isCreatable($path))) {
|
|
return false;
|
|
}
|
|
$info = array(
|
|
'target' => $this->sharedFolder.$path,
|
|
'source' => $source,
|
|
);
|
|
\OCP\Util::emitHook('\OC\Files\Storage\Shared', 'file_put_contents', $info);
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
$result = $storage->file_put_contents($internalPath, $data);
|
|
return $result;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function unlink($path) {
|
|
// Delete the file if DELETE permission is granted
|
|
if ($source = $this->getSourcePath($path)) {
|
|
if ($this->isDeletable($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->unlink($internalPath);
|
|
} else if (dirname($path) == '/' || dirname($path) == '.') {
|
|
// Unshare the file from the user if in the root of the Shared folder
|
|
if ($this->is_dir($path)) {
|
|
$itemType = 'folder';
|
|
} else {
|
|
$itemType = 'file';
|
|
}
|
|
return \OCP\Share::unshareFromSelf($itemType, $path);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function rename($path1, $path2) {
|
|
// Renaming/moving is only allowed within shared folders
|
|
$pos1 = strpos($path1, '/', 1);
|
|
$pos2 = strpos($path2, '/', 1);
|
|
if ($pos1 !== false && $pos2 !== false && ($oldSource = $this->getSourcePath($path1))) {
|
|
$newSource = $this->getSourcePath(dirname($path2)).'/'.basename($path2);
|
|
if (dirname($path1) == dirname($path2)) {
|
|
// Rename the file if UPDATE permission is granted
|
|
if ($this->isUpdatable($path1)) {
|
|
list($storage, $oldInternalPath) = \OC\Files\Filesystem::resolvePath($oldSource);
|
|
list( , $newInternalPath) = \OC\Files\Filesystem::resolvePath($newSource);
|
|
return $storage->rename($oldInternalPath, $newInternalPath);
|
|
}
|
|
} else {
|
|
// Move the file if DELETE and CREATE permissions are granted
|
|
if ($this->isDeletable($path1) && $this->isCreatable(dirname($path2))) {
|
|
// Get the root shared folder
|
|
$folder1 = substr($path1, 0, $pos1);
|
|
$folder2 = substr($path2, 0, $pos2);
|
|
// Copy and unlink the file if it exists in a different shared folder
|
|
if ($folder1 != $folder2) {
|
|
if ($this->copy($path1, $path2)) {
|
|
return $this->unlink($path1);
|
|
}
|
|
} else {
|
|
list($storage, $oldInternalPath) = \OC\Files\Filesystem::resolvePath($oldSource);
|
|
list( , $newInternalPath) = \OC\Files\Filesystem::resolvePath($newSource);
|
|
return $storage->rename($oldInternalPath, $newInternalPath);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function copy($path1, $path2) {
|
|
// Copy the file if CREATE permission is granted
|
|
if ($this->isCreatable(dirname($path2))) {
|
|
$source = $this->fopen($path1, 'r');
|
|
$target = $this->fopen($path2, 'w');
|
|
return \OC_Helper::streamCopy($source, $target);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function fopen($path, $mode) {
|
|
if ($source = $this->getSourcePath($path)) {
|
|
switch ($mode) {
|
|
case 'r+':
|
|
case 'rb+':
|
|
case 'w+':
|
|
case 'wb+':
|
|
case 'x+':
|
|
case 'xb+':
|
|
case 'a+':
|
|
case 'ab+':
|
|
case 'w':
|
|
case 'wb':
|
|
case 'x':
|
|
case 'xb':
|
|
case 'a':
|
|
case 'ab':
|
|
if (!$this->isUpdatable($path)) {
|
|
return false;
|
|
}
|
|
}
|
|
$info = array(
|
|
'target' => $this->sharedFolder.$path,
|
|
'source' => $source,
|
|
'mode' => $mode,
|
|
);
|
|
\OCP\Util::emitHook('\OC\Files\Storage\Shared', 'fopen', $info);
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->fopen($internalPath, $mode);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function getMimeType($path) {
|
|
if ($path == '' || $path == '/') {
|
|
return 'httpd/unix-directory';
|
|
}
|
|
if ($source = $this->getSourcePath($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->getMimeType($internalPath);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function free_space($path) {
|
|
if ($path == '') {
|
|
return -1;
|
|
}
|
|
$source = $this->getSourcePath($path);
|
|
if ($source) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->free_space($internalPath);
|
|
}
|
|
}
|
|
|
|
public function getLocalFile($path) {
|
|
if ($source = $this->getSourcePath($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->getLocalFile($internalPath);
|
|
}
|
|
return false;
|
|
}
|
|
public function touch($path, $mtime = null) {
|
|
if ($source = $this->getSourcePath($path)) {
|
|
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
|
|
return $storage->touch($internalPath, $mtime);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public static function setup($options) {
|
|
$user_dir = $options['user_dir'];
|
|
\OC\Files\Filesystem::mount('\OC\Files\Storage\Shared', array('sharedFolder' => '/Shared'), $user_dir.'/Shared/');
|
|
}
|
|
|
|
public function hasUpdated($path, $time) {
|
|
if ($path == '') {
|
|
return false;
|
|
}
|
|
return $this->filemtime($path) > $time;
|
|
}
|
|
|
|
public function getCache() {
|
|
return new \OC\Files\Cache\Shared_Cache($this);
|
|
}
|
|
|
|
public function getPermissionsCache() {
|
|
return new \OC\Files\Cache\Shared_Permissions($this);
|
|
}
|
|
|
|
public function getWatcher() {
|
|
return new \OC\Files\Cache\Shared_Watcher($this);
|
|
}
|
|
|
|
public function getOwner($path) {
|
|
if ($path == '') {
|
|
return false;
|
|
}
|
|
$source = $this->getFile($path);
|
|
if ($source) {
|
|
return $source['uid_owner'];
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function getETag($path) {
|
|
|
|
}
|
|
|
|
}
|