forked from extern/egroupware
384 lines
12 KiB
PHP
384 lines
12 KiB
PHP
<?php
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/**
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* eGroupWare API: VFS - WebDAV access using the new stream wrapper VFS interface
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*
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* Using the PEAR HTTP/WebDAV/Server/Filesystem class (which need to be installed!)
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*
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* @link http://www.egroupware.org
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package api
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* @subpackage vfs
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* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @author Hartmut Holzgraefe <hartmut@php.net> original HTTP/WebDAV/Server/Filesystem class, of which some code is used
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* @version $Id$
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*/
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require_once('HTTP/WebDAV/Server/Filesystem.php');
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/**
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* FileManger - WebDAV access using the new stream wrapper VFS interface
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*
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* Using the PEAR HTTP/WebDAV/Server/Filesystem class (which need to be installed!)
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*
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* @todo table to store locks and properties
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* @todo filesystem class uses PEAR's System::find which we dont require nor know if it works on custom streamwrapper
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*/
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class vfs_webdav_server extends HTTP_WebDAV_Server_Filesystem
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{
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var $dav_powered_by = 'eGroupWare WebDAV server';
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/**
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* Base directory is the URL of our VFS root
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*
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* @var string
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*/
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var $base = egw_vfs::PREFIX;
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/**
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* Debug level: 0 = nothing, 1 = function calls, 2 = more info, eg. complete $_SERVER array
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*
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* The debug messages are send to the apache error_log
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*
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* @var integer
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*/
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var $debug = 0;
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/**
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* Serve a webdav request
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*
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* Reimplemented to not check our vfs base path with realpath and connect to mysql DB
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*
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* @access public
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* @param string
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*/
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function ServeRequest($base = false)
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{
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// special treatment for litmus compliance test
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// reply on its identifier header
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// not needed for the test itself but eases debugging
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if (function_exists('apache_request_headers'))
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{
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foreach (apache_request_headers() as $key => $value)
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{
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if (stristr($key, "litmus"))
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{
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error_log("Litmus test $value");
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header("X-Litmus-reply: ".$value);
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}
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}
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}
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// let the base class do all the work
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HTTP_WebDAV_Server::ServeRequest();
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}
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/**
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* DELETE method handler
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*
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* @param array general parameter passing array
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* @return bool true on success
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*/
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function DELETE($options)
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{
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$path = $this->base . "/" .$options["path"];
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if (!file_exists($path))
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{
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return "404 Not found";
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}
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if (is_dir($path))
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{
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/*$query = "DELETE FROM {$this->db_prefix}properties
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WHERE path LIKE '".$this->_slashify($options["path"])."%'";
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mysql_query($query); */
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// recursive delete the directory
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if ($dir = egw_vfs::dir_opendir($options["path"]))
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{
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while(($file = readdir($dir)))
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{
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if ($file == '.' || $file == '..') continue;
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if (is_dir($path.'/'.$file))
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{
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// recursivly call ourself with the dir
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$opts = $options;
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$opts['path'] .= '/'.$file;
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$this->DELETE($opts);
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}
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else
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{
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unlink($path.'/'.$file);
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}
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}
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closedir($dir);
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}
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}
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else
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{
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unlink($path);
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}
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/*$query = "DELETE FROM {$this->db_prefix}properties
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WHERE path = '$options[path]'";
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mysql_query($query);*/
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return "204 No Content";
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}
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/**
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* Get properties for a single file/resource
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*
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* @param string resource path
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* @return array resource properties
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*/
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function fileinfo($path)
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{
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error_log(__METHOD__."($path)");
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// map URI path to filesystem path
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$fspath = $this->base . $path;
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// create result array
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$info = array();
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// TODO remove slash append code when base clase is able to do it itself
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$info["path"] = is_dir($fspath) ? $this->_slashify($path) : $path;
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$info["props"] = array();
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// no special beautified displayname here ...
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$info["props"][] = $this->mkprop("displayname", strtoupper($path));
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// creation and modification time
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$info["props"][] = $this->mkprop("creationdate", filectime($fspath));
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$info["props"][] = $this->mkprop("getlastmodified", filemtime($fspath));
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// type and size (caller already made sure that path exists)
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if (is_dir($fspath)) {
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// directory (WebDAV collection)
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$info["props"][] = $this->mkprop("resourcetype", "collection");
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$info["props"][] = $this->mkprop("getcontenttype", "httpd/unix-directory");
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} else {
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// plain file (WebDAV resource)
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$info["props"][] = $this->mkprop("resourcetype", "");
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if (egw_vfs::is_readable($path)) {
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$info["props"][] = $this->mkprop("getcontenttype", egw_vfs::mime_content_type($path));
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} else {
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error_log(__METHOD__."($path) $fspath is not readable!");
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$info["props"][] = $this->mkprop("getcontenttype", "application/x-non-readable");
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}
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$info["props"][] = $this->mkprop("getcontentlength", filesize($fspath));
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}
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/*
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// get additional properties from database
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$query = "SELECT ns, name, value
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FROM {$this->db_prefix}properties
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WHERE path = '$path'";
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$res = mysql_query($query);
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while ($row = mysql_fetch_assoc($res)) {
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$info["props"][] = $this->mkprop($row["ns"], $row["name"], $row["value"]);
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}
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mysql_free_result($res);
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*/
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//error_log(__METHOD__."($path) info=".print_r($info,true));
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return $info;
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}
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/**
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* Used eg. by get
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*
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* @todo replace all calls to _mimetype with egw_vfs::mime_content_type()
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* @param string $path
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* @return string
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*/
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function _mimetype($path)
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{
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return egw_vfs::mime_content_type($path);
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}
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/**
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* PROPPATCH method handler
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*
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* The current version only allows Webdrive to set creation and modificaton dates.
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* They are not stored as (arbitrary) WebDAV properties with their own namespace and name,
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* but in the regular vfs attributes.
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*
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* @todo Store a properties in the DB and retrieve them in PROPFIND again.
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* @param array general parameter passing array
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* @return bool true on success
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*/
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function PROPPATCH(&$options)
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{
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$path = $GLOBALS['egw']->translation->convert($options['path'],'utf-8');
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foreach ($options["props"] as $key => $prop) {
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$attributes = array();
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switch($prop['ns'])
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{
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// allow Webdrive to set creation and modification time
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case 'http://www.southrivertech.com/':
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switch($prop['name'])
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{
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case 'srt_modifiedtime':
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case 'getlastmodified':
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egw_vfs::touch($path,strtotime($prop['val']));
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break;
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case 'srt_creationtime':
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// not supported via the streamwrapper interface atm.
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//$attributes['created'] = strtotime($prop['val']);
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break;
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}
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break;
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case 'DAV:':
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switch($prop['name'])
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{
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// allow netdrive to change the modification time
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case 'getlastmodified':
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egw_vfs::touch($path,strtotime($prop['val']));
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break;
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// not sure why, the filesystem example of the WebDAV class does it ...
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default:
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$options["props"][$key]['status'] = "403 Forbidden";
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break;
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}
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break;
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}
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if ($this->debug) $props[] = '('.$prop["ns"].')'.$prop['name'].'='.$prop['val'];
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}
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if ($this->debug)
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{
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error_log(__METHOD__.": path=$options[path], props=".implode(', ',$props));
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if ($attributes) error_log(__METHOD__.": path=$options[path], set attributes=".str_replace("\n",' ',print_r($attributes,true)));
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}
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return ""; // this is as the filesystem example handler does it, no true or false ...
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}
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/**
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* LOCK method handler
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*
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* @param array general parameter passing array
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* @return bool true on success
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*/
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function LOCK(&$options)
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{
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// behaving like LOCK is not implemented
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return "412 Precondition failed";
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/*
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// get absolute fs path to requested resource
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$fspath = $this->base . $options["path"];
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// TODO recursive locks on directories not supported yet
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if (is_dir($fspath) && !empty($options["depth"])) {
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return "409 Conflict";
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}
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$options["timeout"] = time()+300; // 5min. hardcoded
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if (isset($options["update"])) { // Lock Update
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$where = "WHERE path = '$options[path]' AND token = '$options[update]'";
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$query = "SELECT owner, exclusivelock FROM {$this->db_prefix}locks $where";
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$res = mysql_query($query);
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$row = mysql_fetch_assoc($res);
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mysql_free_result($res);
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if (is_array($row)) {
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$query = "UPDATE {$this->db_prefix}locks
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SET expires = '$options[timeout]'
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, modified = ".time()."
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$where";
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mysql_query($query);
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$options['owner'] = $row['owner'];
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$options['scope'] = $row["exclusivelock"] ? "exclusive" : "shared";
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$options['type'] = $row["exclusivelock"] ? "write" : "read";
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return true;
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} else {
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return false;
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}
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}
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$query = "INSERT INTO {$this->db_prefix}locks
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SET token = '$options[locktoken]'
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, path = '$options[path]'
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, created = ".time()."
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, modified = ".time()."
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, owner = '$options[owner]'
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, expires = '$options[timeout]'
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, exclusivelock = " .($options['scope'] === "exclusive" ? "1" : "0")
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;
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mysql_query($query);
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return mysql_affected_rows() ? "200 OK" : "409 Conflict";*/
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}
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/**
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* UNLOCK method handler
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*
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* @param array general parameter passing array
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* @return bool true on success
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*/
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function UNLOCK(&$options)
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{
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// behaving like LOCK is not implemented
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return "405 Method not allowed";
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/*
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$query = "DELETE FROM {$this->db_prefix}locks
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WHERE path = '$options[path]'
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AND token = '$options[token]'";
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mysql_query($query);
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return mysql_affected_rows() ? "204 No Content" : "409 Conflict";*/
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}
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/**
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* checkLock() helper
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*
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* @param string resource path to check for locks
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* @return bool true on success
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*/
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function checkLock($path)
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{
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// behave like checkLock is not implemented
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return false;
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/*
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$result = false;
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$query = "SELECT owner, token, created, modified, expires, exclusivelock
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FROM {$this->db_prefix}locks
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WHERE path = '$path'
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";
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$res = mysql_query($query);
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if ($res) {
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$row = mysql_fetch_array($res);
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mysql_free_result($res);
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if ($row) {
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$result = array( "type" => "write",
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"scope" => $row["exclusivelock"] ? "exclusive" : "shared",
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"depth" => 0,
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"owner" => $row['owner'],
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"token" => $row['token'],
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"created" => $row['created'],
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"modified" => $row['modified'],
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"expires" => $row['expires']
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);
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}
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}
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return $result;*/
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}
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/**
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* Remove not (yet) implemented LOCK methods, so we can use the mostly unchanged HTTP_WebDAV_Server_Filesystem class
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*
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* @return array
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*/
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function _allow()
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{
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$allow = parent::_allow();
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unset($allow['LOCK']);
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unset($allow['UNLOCK']);
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return $allow;
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}
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} |