nextcloud/lib/private/connector/sabre/node.php

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<?php
use Sabre\DAV\URLUtil;
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/**
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* ownCloud
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*
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* @author Jakob Sack
* @copyright 2011 Jakob Sack kde@jakobsack.de
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*
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* 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.
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*
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* 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/>.
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*
*/
abstract class OC_Connector_Sabre_Node implements \Sabre\DAV\INode, \Sabre\DAV\IProperties {
const GETETAG_PROPERTYNAME = '{DAV:}getetag';
const LASTMODIFIED_PROPERTYNAME = '{DAV:}lastmodified';
/**
* Allow configuring the method used to generate Etags
*
* @var array(class_name, function_name)
*/
public static $ETagFunction = null;
/**
* @var \OC\Files\View
*/
protected $fileView;
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/**
* The path to the current node
*
* @var string
*/
protected $path;
/**
* node properties cache
*
* @var array
*/
protected $property_cache = null;
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/**
* @var \OCP\Files\FileInfo
*/
protected $info;
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/**
* Sets up the node, expects a full path name
* @param \OC\Files\View $view
* @param \OCP\Files\FileInfo $info
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*/
public function __construct($view, $info) {
$this->fileView = $view;
$this->path = $this->fileView->getRelativePath($info->getPath());
$this->info = $info;
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}
protected function refreshInfo() {
$this->info = $this->fileView->getFileInfo($this->path);
}
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/**
* Returns the name of the node
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* @return string
*/
public function getName() {
return $this->info->getName();
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}
/**
* Renames the node
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* @param string $name The new name
* @throws \Sabre\DAV\Exception\BadRequest
* @throws \Sabre\DAV\Exception\Forbidden
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*/
public function setName($name) {
// rename is only allowed if the update privilege is granted
if (!$this->info->isUpdateable()) {
throw new \Sabre\DAV\Exception\Forbidden();
}
list($parentPath,) = URLUtil::splitPath($this->path);
list(, $newName) = URLUtil::splitPath($name);
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if (!\OCP\Util::isValidFileName($newName)) {
throw new \Sabre\DAV\Exception\BadRequest();
}
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$newPath = $parentPath . '/' . $newName;
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$oldPath = $this->path;
$this->fileView->rename($this->path, $newPath);
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$this->path = $newPath;
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$query = OC_DB::prepare('UPDATE `*PREFIX*properties` SET `propertypath` = ?'
. ' WHERE `userid` = ? AND `propertypath` = ?');
$query->execute(array($newPath, OC_User::getUser(), $oldPath));
$this->refreshInfo();
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}
public function setPropertyCache($property_cache) {
$this->property_cache = $property_cache;
}
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/**
* Returns the last modification time, as a unix timestamp
* @return int timestamp as integer
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*/
public function getLastModified() {
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$timestamp = $this->info->getMtime();
if (!empty($timestamp)) {
return (int)$timestamp;
}
return $timestamp;
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}
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/**
* sets the last modification time of the file (mtime) to the value given
* in the second parameter or to now if the second param is empty.
* Even if the modification time is set to a custom value the access time is set to now.
*/
public function touch($mtime) {
$this->fileView->touch($this->path, $mtime);
$this->refreshInfo();
}
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/**
* Updates properties on this node,
* @see \Sabre\DAV\IProperties::updateProperties
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* @param array $properties
* @return boolean
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*/
public function updateProperties($properties) {
$existing = $this->getProperties(array());
foreach ($properties as $propertyName => $propertyValue) {
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// If it was null, we need to delete the property
if (is_null($propertyValue)) {
if (array_key_exists($propertyName, $existing)) {
$query = OC_DB::prepare('DELETE FROM `*PREFIX*properties`'
. ' WHERE `userid` = ? AND `propertypath` = ? AND `propertyname` = ?');
$query->execute(array(OC_User::getUser(), $this->path, $propertyName));
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}
} else {
if (strcmp($propertyName, self::GETETAG_PROPERTYNAME) === 0) {
\OC\Files\Filesystem::putFileInfo($this->path, array('etag' => $propertyValue));
} elseif (strcmp($propertyName, self::LASTMODIFIED_PROPERTYNAME) === 0) {
$this->touch($propertyValue);
} else {
if (!array_key_exists($propertyName, $existing)) {
$query = OC_DB::prepare('INSERT INTO `*PREFIX*properties`'
. ' (`userid`,`propertypath`,`propertyname`,`propertyvalue`) VALUES(?,?,?,?)');
$query->execute(array(OC_User::getUser(), $this->path, $propertyName, $propertyValue));
} else {
$query = OC_DB::prepare('UPDATE `*PREFIX*properties` SET `propertyvalue` = ?'
. ' WHERE `userid` = ? AND `propertypath` = ? AND `propertyname` = ?');
$query->execute(array($propertyValue, OC_User::getUser(), $this->path, $propertyName));
}
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}
}
}
$this->setPropertyCache(null);
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return true;
}
/**
* removes all properties for this node and user
*/
public function removeProperties() {
$query = OC_DB::prepare('DELETE FROM `*PREFIX*properties`'
. ' WHERE `userid` = ? AND `propertypath` = ?');
$query->execute(array(OC_User::getUser(), $this->path));
$this->setPropertyCache(null);
}
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/**
* Returns a list of properties for this nodes.;
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* @param array $properties
* @return array
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* @note The properties list is a list of propertynames the client
* requested, encoded as xmlnamespace#tagName, for example:
* http://www.example.org/namespace#author If the array is empty, all
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* properties should be returned
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*/
public function getProperties($properties) {
if (is_null($this->property_cache)) {
$sql = 'SELECT * FROM `*PREFIX*properties` WHERE `userid` = ? AND `propertypath` = ?';
$result = OC_DB::executeAudited($sql, array(OC_User::getUser(), $this->path));
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$this->property_cache = array();
while ($row = $result->fetchRow()) {
$this->property_cache[$row['propertyname']] = $row['propertyvalue'];
}
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$this->property_cache[self::GETETAG_PROPERTYNAME] = '"' . $this->info->getEtag() . '"';
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}
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// if the array was empty, we need to return everything
if (count($properties) == 0) {
return $this->property_cache;
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}
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$props = array();
foreach ($properties as $property) {
if (isset($this->property_cache[$property])) {
$props[$property] = $this->property_cache[$property];
}
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}
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return $props;
}
/**
* @return string|null
*/
public function getFileId() {
if ($this->info->getId()) {
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$instanceId = OC_Util::getInstanceId();
$id = sprintf('%08d', $this->info->getId());
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return $id . $instanceId;
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}
return null;
}
/**
* @return string|null
*/
public function getDavPermissions() {
$p ='';
if ($this->info->isShared()) {
$p .= 'S';
}
if ($this->info->isShareable()) {
$p .= 'R';
}
if ($this->info->isMounted()) {
$p .= 'M';
}
if ($this->info->isDeletable()) {
$p .= 'D';
}
if ($this->info->isDeletable()) {
$p .= 'NV'; // Renameable, Moveable
}
if ($this->info->getType() === \OCP\Files\FileInfo::TYPE_FILE) {
if ($this->info->isUpdateable()) {
$p .= 'W';
}
} else {
if ($this->info->isUpdateable()) {
$p .= 'CK';
}
}
return $p;
}
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/**
* Returns the ETag for a file
*
* An ETag is a unique identifier representing the current version of the
* file. If the file changes, the ETag MUST change. The ETag is an
* arbitrary string, but MUST be surrounded by double-quotes.
*
* Return null if the ETag can not effectively be determined
*
* @return mixed
*/
public function getETag() {
return '"' . $this->info->getEtag() . '"';
}
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}