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egroupware/phpgwapi/inc/class.vfs_webdav_server.inc.php

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<?php
/**
* eGroupWare API: VFS - WebDAV access
*
* Using the PEAR HTTP/WebDAV/Server class (which need to be installed!)
*
* @link http://www.egroupware.org
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package api
* @subpackage vfs
* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @copyright (c) 2006 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @version $Id$
*/
require_once('HTTP/WebDAV/Server.php');
require_once(EGW_API_INC.'/class.vfs_home.inc.php');
/**
* FileManger - WebDAV access
*
* Using the PEAR HTTP/WebDAV/Server class (which need to be installed!)
*/
class vfs_webdav_server extends HTTP_WebDAV_Server
{
/**
* instance of the vfs class
*
* @var vfs_home
*/
var $vfs;
var $dav_powered_by = 'eGroupWare WebDAV server';
/**
* Debug level: 0 = nothing, 1 = function calls, 2 = more info, eg. complete $_SERVER array
*
* The debug messages are send to the apache error_log
*
* @var integer
*/
var $debug = 0;
function vfs_webdav_server()
{
if ($this->debug === 2) foreach($_SERVER as $name => $val) error_log("vfs_webdav_server: \$_SERVER[$name]='$val'");
parent::HTTP_WebDAV_Server();
$this->vfs =& new vfs_home;
}
/**
* PROPFIND method handler
*
* @param array general parameter passing array
* @param array return array for file properties
* @return bool true on success
*/
function PROPFIND(&$options, &$files)
{
$vfs_data = array(
'string' => $GLOBALS['egw']->translation->convert($options['path'],'utf-8'),
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
// at first only list the given path itself
'checksubdirs' => False,
'nofiles' => True
);
if (!($vfs_files = $this->vfs->ls($vfs_data))) // path not found
{
// check if the users home-dir is just not yet created (should be done by the vfs-class!)
// ToDo: group-dirs
if ($vfs_data['string'] == '/home/'.$GLOBALS['egw_info']['user']['account_lid'])
{
$this->vfs->override_acl = true; // user has no right to create dir in /home
$created = $this->vfs->mkdir(array(
'string' => $GLOBALS['egw']->translation->convert($options['path'],'utf-8'),
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
));
$this->vfs->override_acl = false;
if (!$created)
{
if ($this->debug) error_log("vfs_webdav_server::PROPFIND(path='$options[path]',depth=$options[depth]) could not create home dir");
}
$vfs_files = $this->vfs->ls($vfs_data);
}
if (!$vfs_files)
{
if ($this->debug) error_log("vfs_webdav_server::PROPFIND(path='$options[path]',depth=$options[depth]) return false (path not found)");
return false; // path not found
}
}
// if depth > 0 and path is a directory => show it's contents
if (!empty($options['depth']) && $vfs_files[0]['mime_type'] == 'Directory')
{
$vfs_data['checksubdirs'] = (int) $options['depth'] != 1;
$vfs_data['nofiles'] = false;
if ($vfs_files[0]['directory'] == '/') // sub-dirs of the root?
{
$vfs_files = array(); // dont return the directory, it shows up double in konq
}
else // return the dir itself with a trailing slash, otherwise empty dirs are reported as non-existent
{
$vfs_files[0]['name'] .= '/';
}
$vfs_files = array_merge($vfs_files,$this->vfs->ls($vfs_data));
}
if ($this->debug) error_log("vfs_webdav_server::PROPFIND(path='$options[path]',depth=$options[depth]) ".count($vfs_files).' files');
$files['files'] = array();
$egw_charset = $GLOBALS['egw']->translation->charset();
foreach($vfs_files as $fileinfo)
{
if ($this->debug) error_log('dir="'.$fileinfo['directory'].'", name="'.$fileinfo['name'].'": '.$fileinfo['mime_type']);
foreach(array('modified','created') as $date)
{
// our vfs has no modified set, if never modified, use created
list($y,$m,$d,$h,$i,$s) = split("[- :]",$fileinfo[$date] ? $fileinfo[$date] : $fileinfo['created']);
$fileinfo[$date] = mktime((int)$h,(int)$i,(int)$s,(int)$m,(int)$d,(int)$y);
}
$info = array(
'path' => $GLOBALS['egw']->translation->convert($fileinfo['directory'].'/'.$fileinfo['name'],$egw_charset,'utf-8'),
'props' => array(
$this->mkprop('displayname',$GLOBALS['egw']->translation->convert($fileinfo['name'],$egw_charset,'utf-8')),
$this->mkprop('creationdate',$fileinfo['created']),
$this->mkprop('getlastmodified',$fileinfo['modified']),
),
);
if ($fileinfo['mime_type'] == 'Directory')
{
$info['props'][] = $this->mkprop('resourcetype', 'collection');
$info['props'][] = $this->mkprop('getcontenttype', 'httpd/unix-directory');
}
else
{
$info['props'][] = $this->mkprop('resourcetype', '');
$info['props'][] = $this->mkprop('getcontenttype', $fileinfo['mime_type']);
$info['props'][] = $this->mkprop('getcontentlength', $fileinfo['size']);
}
$files['files'][] = $info;
}
if ($this->debug == 2) foreach($files['files'] as $info) error_log(print_r($info,true));
// ok, all done
return true;
}
/**
* GET method handler
*
* @param array parameter passing array
* @return bool true on success
*/
function GET(&$options)
{
if ($this->debug) error_log('vfs_webdav_server::GET('.print_r($options,true).')');
$vfs_data = array(
'string' => $GLOBALS['egw']->translation->convert($options['path'],'utf-8'),
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
'checksubdirs' => False,
'nofiles' => True
);
// sanity check
if (!($vfs_file = $this->vfs->ls($vfs_data)))
{
return false;
}
$options['mimetype'] = $vfs_file[0]['mime_type'];
$options['size'] = $vfs_file[0]['size'];
if (($options['data'] = $this->vfs->read($vfs_data)) === false)
{
return '403 Forbidden'; // not sure if this is the right code for access denied
}
return true;
}
/**
* PUT method handler
*
* @param array parameter passing array
* @return bool true on success
*/
function PUT(&$options)
{
if ($this->debug) error_log('vfs_webdav_server::PUT('.print_r($options,true).')');
$vfs_data = array(
'string' => dirname($GLOBALS['egw']->translation->convert($options['path'],'utf-8')),
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
'checksubdirs' => False,
'nofiles' => True
);
if (!($vfs_file = $this->vfs->ls($vfs_data)) || $vfs_file[0]['mime_type'] != 'Directory')
{
return '409 Conflict';
}
$vfs_data = array(
'string' => $GLOBALS['egw']->translation->convert($options['path'],'utf-8'),
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
);
$options['new'] = !$this->vfs->file_exists($vfs_data);
$vfs_data['content'] = '';
while(!feof($options['stream']))
{
$vfs_data['content'] .= fread($options['stream'],8192);
}
return $this->vfs->write($vfs_data);
}
/**
* MKCOL method handler
*
* @param array general parameter passing array
* @return bool true on success
*/
function MKCOL($options)
{
if ($this->debug) error_log('vfs_webdav_server::MKCOL('.print_r($options,true).')');
$vfs_data = array(
'string' => dirname($GLOBALS['egw']->translation->convert($options['path'],'utf-8')),
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
'checksubdirs' => False,
'nofiles' => True
);
if (!($vfs_file = $this->vfs->ls($vfs_data)))
{
return '409 Conflict';
}
if ($this->debug) error_log(print_r($vfs_file,true));
if ($vfs_file[0]['mime_type'] != 'Directory')
{
return '403 Forbidden';
}
$vfs_data = array(
'string' => $GLOBALS['egw']->translation->convert($options['path'],'utf-8'),
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
);
if ($this->vfs->file_exists($vfs_data) )
{
return '405 Method not allowed';
}
if (!empty($_SERVER['CONTENT_LENGTH'])) // no body parsing yet
{
return '415 Unsupported media type';
}
if (!$this->vfs->mkdir($vfs_data))
{
return '403 Forbidden';
}
return '201 Created';
}
/**
* DELETE method handler
*
* @param array general parameter passing array
* @return bool true on success
*/
function DELETE($options)
{
if ($this->debug) error_log('vfs_webdav_server::DELETE('.print_r($options,true).')');
$vfs_data = array(
'string' => $GLOBALS['egw']->translation->convert($options['path'],'utf-8'),
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
);
if (!$this->vfs->file_exists($vfs_data))
{
return '404 Not found';
}
if (!$this->vfs->rm($vfs_data))
{
return '403 Forbidden';
}
return '204 No Content';
}
/**
* MOVE method handler
*
* @param array general parameter passing array
* @return bool true on success
*/
function MOVE($options)
{
return $this->COPY($options, true);
}
/**
* COPY method handler
*
* @param array general parameter passing array
* @return bool true on success
*/
function COPY($options, $del=false)
{
if ($this->debug) error_log('vfs_webdav_server::'.($del ? 'MOVE' : 'COPY').'('.print_r($options,true).')');
// TODO Property updates still broken (Litmus should detect this?)
if (!empty($_SERVER['CONTENT_LENGTH'])) // no body parsing yet
{
return '415 Unsupported media type';
}
// no copying to different WebDAV Servers yet
if (isset($options['dest_url']))
{
return '502 bad gateway';
}
$source = array(
'string' => $GLOBALS['egw']->translation->convert($options['path'],'utf-8'),
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
);
if (!$this->vfs->file_exists($source))
{
return '404 Not found';
}
$dest = array(
'string' => $options['dest'],
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
);
$new = !$this->vfs->file_exists($dest);
$existing_col = false;
if (!$new)
{
if ($del && $this->vfs->file_type($dest) == 'Directory')
{
if (!$options['overwrite'])
{
return '412 precondition failed';
}
$dest['string'] .= basename($GLOBALS['egw']->translation->convert($options['path'],'utf-8'));
if ($this->vfs->file_exists($dest))
{
$options['dest'] .= basename($GLOBALS['egw']->translation->convert($options['path'],'utf-8'));
}
else
{
$new = true;
$existing_col = true;
}
}
}
if (!$new)
{
if ($options['overwrite'])
{
$stat = $this->DELETE(array('path' => $options['dest']));
if (($stat{0} != '2') && (substr($stat, 0, 3) != '404'))
{
return $stat;
}
}
else
{
return '412 precondition failed';
}
}
if ($this->vfs->file_type($source) == 'Directory' && ($options['depth'] != 'infinity'))
{
// RFC 2518 Section 9.2, last paragraph
return '400 Bad request';
}
$op = $del ? 'mv' : 'cp';
$vfs_data = array(
'from' => $source['string'],
'to' => $dest['string'],
'relatives' => array(RELATIVE_ROOT,RELATIVE_ROOT)
);
if (!$this->vfs->$op($vfs_data))
{
return '500 Internal server error';
}
return ($new && !$existing_col) ? '201 Created' : '204 No Content';
}
/**
* PROPPATCH method handler
*
* The current version only allows Webdrive to set creation and modificaton dates.
* They are not stored as (arbitrary) WebDAV properties with their own namespace and name,
* but in the regular vfs attributes.
*
* @todo Store a properties in the DB and retrieve them in PROPFIND again.
* @param array general parameter passing array
* @return bool true on success
*/
function PROPPATCH(&$options)
{
foreach ($options["props"] as $key => $prop) {
if ($prop["ns"] == "DAV:") {
$options["props"][$key]['status'] = "403 Forbidden";
} else {
$attributes = array();
switch($prop['ns'])
{
// allow Webdrive (Novel) to set creation and modification time
case 'http://www.southrivertech.com/':
switch($prop['name'])
{
case 'srt_modifiedtime':
case 'getlastmodified':
$attributes['modified'] = strtotime($prop['val']);
break;
case 'srt_creationtime':
$attributes['created'] = strtotime($prop['val']);
break;
}
break;
}
if ($attributes)
{
$vfs_data = array(
'string' => $GLOBALS['egw']->translation->convert($options['path'],'utf-8'),
'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
'attributes'=> $attributes,
);
$this->vfs->set_attributes($vfs_data);
}
}
if ($this->debug) $props[] = '('.$prop["ns"].')'.$prop['name'].'='.$prop['val'];
}
if ($this->debug) error_log(__CLASS__.'::'.__METHOD__.": path=$options[path],props=".implode(', ',$props));
return ""; // this is as the filesystem example handler does it, no true or false ...
}
/**
* auth check in the session creation in dav.php, to avoid being redirected to login.php
*
* @param string $type
* @param string $login account_lid or account_lid@domain
* @param string $password this is checked in the session creation
* @return boolean true if authorized or false otherwise
*/
function checkAuth($type,$login,$password)
{
list($account_lid,$domain) = explode('@',$login);
$auth = ($login === $GLOBALS['egw_info']['user']['account_lid'] ||
($account_lid === $GLOBALS['egw_info']['user']['account_lid'] && $domain === $GLOBALS['egw']->session->account_domain)) &&
$GLOBALS['egw_info']['user']['apps']['filemanager'];
if ($this->debug) error_log("vfs_webdav_server::checkAuth('$type','$login','\$password'): account_lid='$account_lid', domain='$domain' ==> ".(int)$auth);
return $auth;
}
}
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