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sources/apps/files_sharing/lib/sharedstorage.php
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<?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'];
}
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public function getId() {
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return 'shared::' . $this->sharedFolder; } /** |
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* @brief Get the source file path, permissions, and owner for a shared file
* @param string Shared target file path
* @return Returns array with the keys path, permissions, and owner or false if not found
*/
public function getFile($target) {
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if (!isset($this->files[$target])) {
// Check for partial files
if (pathinfo($target, PATHINFO_EXTENSION) === 'part') {
$source = \OC_Share_Backend_File::getSource(substr($target, 0, -5));
if ($source) {
$source['path'] .= '.part';
// All partial files have delete permission
$source['permissions'] |= \OCP\PERMISSION_DELETE;
}
} else {
$source = \OC_Share_Backend_File::getSource($target);
}
$this->files[$target] = $source;
}
return $this->files[$target];
}
/**
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* @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
*/
public function getSourcePath($target) {
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$source = $this->getFile($target);
if ($source) {
if (!isset($source['fullPath'])) {
\OC\Files\Filesystem::initMountPoints($source['fileOwner']);
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$mount = \OC\Files\Filesystem::getMountByNumericId($source['storage']);
if (is_array($mount)) {
$this->files[$target]['fullPath'] = $mount[key($mount)]->getMountPoint() . $source['path'];
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} else {
$this->files[$target]['fullPath'] = false;
}
}
return $this->files[$target]['fullPath'];
}
return false;
}
/**
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* @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 */ |
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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\Files\Stream\Dir::register('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 == '/') {
$mtime = 0;
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$dh = $this->opendir($path);
if (is_resource($dh)) {
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while (($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(
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'target' => $this->sharedFolder . $path, |
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'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))
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|| ($this->is_dir($path) && !$this->isCreatable($path))
) {
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return false; } $info = array( |
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'target' => $this->sharedFolder . $path, 'source' => $source, ); |
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\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);
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}
}
return false;
}
public function rename($path1, $path2) {
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// 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($path2);
// Within the same folder, we only need UPDATE permissions
if (dirname($path1) == dirname($path2) and $this->isUpdatable($path1)) {
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list($storage, $oldInternalPath) = \OC\Files\Filesystem::resolvePath($oldSource); |
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list(, $newInternalPath) = \OC\Files\Filesystem::resolvePath($newSource); |
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return $storage->rename($oldInternalPath, $newInternalPath); |
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// otherwise DELETE and CREATE permissions required
} elseif ($this->isDeletable($path1) && $this->isCreatable(dirname($path2))) {
$rootView = new \OC\Files\View('');
return $rootView->rename($oldSource, $newSource);
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}
}
return false;
}
public function copy($path1, $path2) {
// Copy the file if CREATE permission is granted
if ($this->isCreatable(dirname($path2))) {
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$oldSource = $this->getSourcePath($path1);
$newSource = $this->getSourcePath(dirname($path2)) . '/' . basename($path2);
$rootView = new \OC\Files\View('');
return $rootView->copy($oldSource, $newSource);
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}
return false;
}
public function fopen($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':
$exists = $this->file_exists($path);
if ($exists && !$this->isUpdatable($path)) {
return false;
}
if (!$exists && !$this->isCreatable(dirname($path))) {
return false;
}
}
$info = array(
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'target' => $this->sharedFolder . $path, |
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'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 == '') {
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return \OC\Files\SPACE_UNKNOWN; |
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}
$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;
}
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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) {
if (!\OCP\User::isLoggedIn() || \OCP\User::getUser() != $options['user']
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|| \OCP\Share::getItemsSharedWith('file')
) {
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$user_dir = $options['user_dir'];
\OC\Files\Filesystem::mount('\OC\Files\Storage\Shared',
array('sharedFolder' => '/Shared'),
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$user_dir . '/Shared/'); |
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}
}
public function hasUpdated($path, $time) {
if ($path == '') {
return false;
}
return $this->filemtime($path) > $time;
}
public function getCache($path = '') {
return new \OC\Files\Cache\Shared_Cache($this);
}
public function getScanner($path = '') {
return new \OC\Files\Cache\Scanner($this);
}
public function getPermissionsCache($path = '') {
return new \OC\Files\Cache\Shared_Permissions($this);
}
public function getWatcher($path = '') {
return new \OC\Files\Cache\Shared_Watcher($this);
}
public function getOwner($path) {
if ($path == '') {
return false;
}
$source = $this->getFile($path);
if ($source) {
return $source['fileOwner'];
}
return false;
}
public function getETag($path) {
if ($path == '') {
return parent::getETag($path);
}
if ($source = $this->getSourcePath($path)) {
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($source);
return $storage->getETag($internalPath);
}
return null;
}
}
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