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https://git.friendi.ca/friendica/friendica-addons.git
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212 lines
5.6 KiB
PHP
212 lines
5.6 KiB
PHP
<?php
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/**
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* Base node-class
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*
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* The node class implements the method used by both the File and the Directory classes
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*
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* @package Sabre
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* @subpackage DAV
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* @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
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* @author Evert Pot (http://www.rooftopsolutions.nl/)
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* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
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*/
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abstract class Sabre_DAV_FSExt_Node extends Sabre_DAV_FS_Node implements Sabre_DAV_IProperties {
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/**
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* Updates properties on this node,
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*
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* @param array $properties
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* @see Sabre_DAV_IProperties::updateProperties
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* @return bool|array
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*/
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public function updateProperties($properties) {
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$resourceData = $this->getResourceData();
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foreach($properties as $propertyName=>$propertyValue) {
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// If it was null, we need to delete the property
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if (is_null($propertyValue)) {
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if (isset($resourceData['properties'][$propertyName])) {
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unset($resourceData['properties'][$propertyName]);
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}
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} else {
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$resourceData['properties'][$propertyName] = $propertyValue;
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}
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}
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$this->putResourceData($resourceData);
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return true;
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}
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/**
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* Returns a list of properties for this nodes.;
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*
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* The properties list is a list of propertynames the client requested, encoded as xmlnamespace#tagName, for example: http://www.example.org/namespace#author
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* If the array is empty, all properties should be returned
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*
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* @param array $properties
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* @return array
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*/
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function getProperties($properties) {
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$resourceData = $this->getResourceData();
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// if the array was empty, we need to return everything
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if (!$properties) return $resourceData['properties'];
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$props = array();
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foreach($properties as $property) {
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if (isset($resourceData['properties'][$property])) $props[$property] = $resourceData['properties'][$property];
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}
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return $props;
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}
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/**
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* Returns the path to the resource file
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*
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* @return string
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*/
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protected function getResourceInfoPath() {
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list($parentDir) = Sabre_DAV_URLUtil::splitPath($this->path);
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return $parentDir . '/.sabredav';
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}
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/**
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* Returns all the stored resource information
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*
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* @return array
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*/
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protected function getResourceData() {
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$path = $this->getResourceInfoPath();
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if (!file_exists($path)) return array('properties' => array());
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// opening up the file, and creating a shared lock
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$handle = fopen($path,'r');
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flock($handle,LOCK_SH);
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$data = '';
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// Reading data until the eof
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while(!feof($handle)) {
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$data.=fread($handle,8192);
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}
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// We're all good
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fclose($handle);
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// Unserializing and checking if the resource file contains data for this file
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$data = unserialize($data);
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if (!isset($data[$this->getName()])) {
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return array('properties' => array());
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}
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$data = $data[$this->getName()];
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if (!isset($data['properties'])) $data['properties'] = array();
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return $data;
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}
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/**
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* Updates the resource information
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*
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* @param array $newData
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* @return void
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*/
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protected function putResourceData(array $newData) {
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$path = $this->getResourceInfoPath();
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// opening up the file, and creating a shared lock
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$handle = fopen($path,'a+');
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flock($handle,LOCK_EX);
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$data = '';
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rewind($handle);
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// Reading data until the eof
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while(!feof($handle)) {
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$data.=fread($handle,8192);
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}
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// Unserializing and checking if the resource file contains data for this file
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$data = unserialize($data);
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$data[$this->getName()] = $newData;
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ftruncate($handle,0);
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rewind($handle);
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fwrite($handle,serialize($data));
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fclose($handle);
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}
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/**
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* Renames the node
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*
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* @param string $name The new name
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* @return void
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*/
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public function setName($name) {
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list($parentPath, ) = Sabre_DAV_URLUtil::splitPath($this->path);
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list(, $newName) = Sabre_DAV_URLUtil::splitPath($name);
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$newPath = $parentPath . '/' . $newName;
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// We're deleting the existing resourcedata, and recreating it
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// for the new path.
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$resourceData = $this->getResourceData();
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$this->deleteResourceData();
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rename($this->path,$newPath);
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$this->path = $newPath;
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$this->putResourceData($resourceData);
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}
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/**
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* @return bool
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*/
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public function deleteResourceData() {
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// When we're deleting this node, we also need to delete any resource information
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$path = $this->getResourceInfoPath();
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if (!file_exists($path)) return true;
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// opening up the file, and creating a shared lock
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$handle = fopen($path,'a+');
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flock($handle,LOCK_EX);
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$data = '';
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rewind($handle);
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// Reading data until the eof
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while(!feof($handle)) {
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$data.=fread($handle,8192);
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}
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// Unserializing and checking if the resource file contains data for this file
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$data = unserialize($data);
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if (isset($data[$this->getName()])) unset($data[$this->getName()]);
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ftruncate($handle,0);
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rewind($handle);
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fwrite($handle,serialize($data));
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fclose($handle);
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return true;
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}
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public function delete() {
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return $this->deleteResourceData();
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}
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}
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