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* Filemanager: enhance sharing to keep session of already logged in user, when he clicks on a share

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This commit is contained in:
Ralf Becker 2015-01-20 22:11:35 +00:00
parent 95007f20d6
commit e2aa6dce73
5 changed files with 156 additions and 42 deletions
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8
filemanager/templates/default/sharing.css
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@ -5,7 +5,7 @@
* @package etemplate
* @link http://www.egroupware.org
* @author Ralf Becker <rb@stylite.de>
* @copyright (c) 2014 by Ralf Becker <rb@stylite.de>
* @copyright (c) 2014/15 by Ralf Becker <rb@stylite.de>
* @version $Id$
*/
@ -22,6 +22,12 @@ div#filemanager-index_buttons img, div#filemanager-index_favorite_wrapper,
div.header_row_right, span.header_count, select#filemanager-index_filter, span.selectcols {
display: none !important;
}
div#filemanager-index_buttons img#filemanager-index_button\[change_view\] {
display: inline-block !important;
position: relative;
left: -230px;
top: 3px;
}
div.filemanager_navigation label {
/*right: 265px !important;*/

3
header.inc.php.template
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@ -86,7 +86,8 @@ $GLOBALS['egw_info']['server']['versions']['header'] = '1.29';
if(!isset($GLOBALS['egw_info']['flags']['noapi']) || !$GLOBALS['egw_info']['flags']['noapi'])
{
if (substr($_SERVER['SCRIPT_NAME'],-7) != 'dav.php' && // dont do it for webdav/groupdav, as we can not safely switch it off again
(!isset($_GET['menuaction']) || substr($_GET['menuaction'],-10) != '_hooks.log'))
(!isset($_GET['menuaction']) || substr($_GET['menuaction'],-10) != '_hooks.log') &&
substr($_SERVER['SCRIPT_NAME'],-10) != '/share.php')
{
ob_start(); // to prevent error messages to be send before our headers
}

134
phpgwapi/inc/class.egw_sharing.inc.php
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@ -6,7 +6,7 @@
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package api
* @author Ralf Becker <rb@stylite.de>
* @copyright (c) 2014 by Ralf Becker <rb@stylite.de>
* @copyright (c) 2014/15 by Ralf Becker <rb@stylite.de>
* @version $Id$
*/
@ -94,9 +94,9 @@ class egw_sharing
}
/**
* Init sharing by setting PHP_AUTH_USER from token in url
* Get token from url
*/
public static function init()
public static function get_token()
{
// WebDAV has no concept of a query string and clients (including cadaver)
// seem to pass '?' unencoded, so we need to extract the path info out
@ -110,22 +110,45 @@ class egw_sharing
$path_info = substr($path_info, strlen($_SERVER['SCRIPT_NAME']));
list(, $token/*, $path*/) = preg_split('|[/?]|', $path_info, 3);
$_SERVER['PHP_AUTH_USER'] = $token;
if (!isset($_SERVER['PHP_AUTH_PW'])) $_SERVER['PHP_AUTH_PW'] = '';
return $token;
}
/**
* Get root of share
*
* @return string
*/
public function get_root()
{
return $this->share['share_root'];
}
/**
* Create sharing session
*
* @param boolean $keep_session =false false: create a new session, true: try mounting it into existing (already verified) session
* @return string with sessionid, does NOT return if no session created
*/
public static function create_session()
public static function create_session($keep_session=false)
{
self::$db = $GLOBALS['egw']->db;
$token = $_SERVER['PHP_AUTH_USER'];
$token = self::get_token();
// are we called from header include, because session did not verify
// --> check if it verifys for our token
if ($token && !$keep_session)
{
$_SERVER['PHP_AUTH_USER'] = $token;
if (!isset($_SERVER['PHP_AUTH_PW'])) $_SERVER['PHP_AUTH_PW'] = '';
unset($GLOBALS['egw_info']['flags']['autocreate_session_callback']);
if ($GLOBALS['egw']->session->verify() && isset($GLOBALS['egw']->sharing) &&
$GLOBALS['egw']->sharing->share['share_token'] === $token)
{
return $GLOBALS['egw']->session->sessionid;
}
}
if (empty($token) || !($share = self::$db->select(self::TABLE, '*', array(
'share_token' => $token,
@ -156,21 +179,6 @@ class egw_sharing
common::egw_exit();
}
// create session without checking auth: create(..., false, false)
if (!($sessionid = $GLOBALS['egw']->session->create('anonymous', '', 'text', false, false)))
{
sleep(1);
$status = '500 Internal Server Error';
header("HTTP/1.1 $status");
header("X-WebDAV-Status: $status", true);
echo "Failed to create session: ".$GLOBALS['egw']->session->reason."\n";
common::egw_exit();
}
// only allow filemanager app
$GLOBALS['egw_info']['user']['apps'] = array(
'filemanager' => $GLOBALS['egw_info']['apps']['filemanager']
);
$share['resolve_url'] = egw_vfs::resolve_url($share['share_path']);
// if share not writable append ro=1 to mount url to make it readonly
if (!self::$db->from_bool($share['share_writable']))
@ -179,9 +187,56 @@ class egw_sharing
}
//_debug_array($share);
// arrange vfs to only contain shared url and use share-owner as user
if ($keep_session) // add share to existing session
{
$share['share_root'] = '/'.$share['share_token'];
// if current user is not the share owner, we need to give him access to mounted share
if (egw_vfs::$user != $share['share_owner'])
{
// check if sharing user has owner rights for shared path
egw_vfs::$user = $share['share_owner'];
egw_vfs::clearstatcache();
if (egw_vfs::has_owner_rights($share['share_path']))
{
$rights = $share['share_writable'] && egw_vfs::is_writable($share['share_path']) ? 7 : 5;
egw_vfs::$user = $GLOBALS['egw']->session->account_id;
egw_vfs::eacl($share['share_root'], $rights, egw_vfs::$user, true); // true = session-only, not permanent
}
// if not, we must not use an eacl, as it grants recursive rights!
// (one could eg. create a writable share for / and use it to escalate his own rights)
// --> create a new session with propper rights (loosing current session)
else
{
$keep_session = false;
}
}
}
if (!$keep_session) // do NOT change to else, as we might have set $keep_session=false!
{
// create session without checking auth: create(..., false, false)
if (!($sessionid = $GLOBALS['egw']->session->create('anonymous', '', 'text', false, false)))
{
sleep(1);
$status = '500 Internal Server Error';
header("HTTP/1.1 $status");
header("X-WebDAV-Status: $status", true);
echo "Failed to create session: ".$GLOBALS['egw']->session->reason."\n";
common::egw_exit();
}
// only allow filemanager app
$GLOBALS['egw_info']['user']['apps'] = array(
'filemanager' => $GLOBALS['egw_info']['apps']['filemanager']
);
$share['share_root'] = '/';
// need to store new fstab and vfs_user in session to allow GET requests / downloads via WebDAV
$GLOBALS['egw_info']['user']['vfs_user'] = egw_vfs::$user = $share['share_owner'];
}
// mounting share
egw_vfs::$is_root = true;
if (!egw_vfs::mount($share['resolve_url'], '/', false, false, true))
if (!egw_vfs::mount($share['resolve_url'], $share['share_root'], false, false, !$keep_session))
{
sleep(1);
$status = '404 Not Found';
@ -191,9 +246,8 @@ class egw_sharing
common::egw_exit();
}
egw_vfs::$is_root = false;
// need to store new fstab and vfs_user in session to allow GET requests / downloads via WebDAV
$GLOBALS['egw_info']['server']['vfs_fstab'] = egw_vfs::mount();
$GLOBALS['egw_info']['user']['vfs_user'] = egw_vfs::$user = $share['share_owner'];
egw_vfs::clearstatcache();
// update accessed timestamp
@ -206,6 +260,15 @@ class egw_sharing
// store sharing object in egw object and therefore in session
$GLOBALS['egw']->sharing = new egw_sharing($share);
// for an existing session we need to store modified egw and egw_info again in session
if ($keep_session)
{
$_SESSION[egw_session::EGW_INFO_CACHE] = $GLOBALS['egw_info'];
unset($_SESSION[egw_session::EGW_INFO_CACHE]['flags']); // dont save the flags, they change on each request
$_SESSION[egw_session::EGW_OBJECT_CACHE] = serialize($GLOBALS['egw']);
}
return $sessionid;
}
@ -214,25 +277,32 @@ class egw_sharing
*/
public function ServeRequest()
{
// sharing is for a different share, change to current share
if ($this->share['share_token'] !== self::get_token())
{
self::create_session($GLOBALS['egw']->session->session_flags === 'N');
return $GLOBALS['egw']->sharing->ServeRequest();
}
// use pure WebDAV for everything but GET requests to directories
if (!egw_vfs::is_dir('/') || $_SERVER['REQUEST_METHOD'] != 'GET' ||
if (!egw_vfs::is_dir($this->share['share_root']) || $_SERVER['REQUEST_METHOD'] != 'GET' ||
// or unsupported browsers like ie < 10
html::$user_agent == 'msie' && html::$ua_version < 10.0 ||
// or if no filemanager installed (WebDAV has own autoindex)
!file_exists(__DIR__.'/../../filemanager/inc/class.filemanager_ui.inc.php'))
{
// send a content-disposition header, so browser knows how to name downloaded file
if (!egw_vfs::is_dir($this->share['share_path']))
if (!egw_vfs::is_dir($this->share['share_root']))
{
html::content_disposition_header(egw_vfs::basename($this->share['share_path']), false);
}
//$GLOBALS['egw']->session->commit_session();
$webdav_server = new vfs_webdav_server();
$webdav_server->ServeRequest('/'.$this->share['share_token']);
$webdav_server->ServeRequest(egw_vfs::concat($this->share['share_root'], $this->share['share_token']));
return;
}
// run full eTemplate2 UI for directories
$_GET['path'] = '/';
$_GET['path'] = $this->share['share_root'];
$_GET['cd'] = 'no';
$GLOBALS['egw_info']['flags']['js_link_registry'] = true;
egw_framework::includeCSS('/filemanager/templates/default/sharing.css');
@ -557,7 +627,7 @@ if (file_exists(__DIR__.'/../../filemanager/inc/class.filemanager_ui.inc.php'))
*/
static function get_home_dir()
{
return '/';
return $GLOBALS['egw']->sharing->get_root();
}
}
}

46
phpgwapi/inc/class.egw_vfs.inc.php
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@ -7,7 +7,7 @@
* @package api
* @subpackage vfs
* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @copyright (c) 2008-14 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @copyright (c) 2008-15 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @version $Id$
*/
@ -927,6 +927,11 @@ class egw_vfs extends vfs_stream_wrapper
return self::_call_on_backend('deny_script',array($path),true);
}
/**
* Name of EACL array in session
*/
const SESSION_EACL = 'session-eacl';
/**
* Set or delete extended acl for a given path and owner (or delete them if is_null($rights)
*
@ -935,10 +940,21 @@ class egw_vfs extends vfs_stream_wrapper
* @param string $url string with path
* @param int $rights =null rights to set, or null to delete the entry
* @param int|boolean $owner =null owner for whom to set the rights, null for the current user, or false to delete all rights for $path
* @param boolean $session_only =false true: set eacl only for this session, does NO further checks currently!
* @return boolean true if acl is set/deleted, false on error
*/
static function eacl($url,$rights=null,$owner=null)
static function eacl($url,$rights=null,$owner=null,$session_only=false)
{
if ($session_only)
{
$session_eacls =& egw_cache::getSession(__CLASS__, self::SESSION_EACL);
$session_eacls[] = array(
'path' => $url[0] == '/' ? $url : egw_vfs::parse_url($url, PHP_URL_PATH),
'owner' => $owner ? $owner : egw_vfs::$user,
'rights' => $rights,
);
return true;
}
return self::_call_on_backend('eacl',array($url,$rights,$owner));
}
@ -952,7 +968,31 @@ class egw_vfs extends vfs_stream_wrapper
*/
static function get_eacl($path)
{
return self::_call_on_backend('get_eacl',array($path),true); // true = fail silent (no PHP Warning)
$eacls = self::_call_on_backend('get_eacl',array($path),true); // true = fail silent (no PHP Warning)
$session_eacls =& egw_cache::getSession(__CLASS__, self::SESSION_EACL);
if ($session_eacls)
{
// eacl is recursive, therefore we have to match all parent-dirs too
$paths = array($path);
while ($path && $path != '/')
{
$paths[] = $path = egw_vfs::dirname($path);
}
foreach((array)$session_eacls as $eacl)
{
if (in_array($eacl['path'], $paths))
{
$eacls[] = $eacl;
}
}
// sort by length descending, to show precedence
usort($eacls, function($a, $b) {
return strlen($b['path']) - strlen($a['path']);
});
}
return $eacls;
}
/**

7
share.php
View File

@ -6,15 +6,12 @@
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package api
* @author Ralf Becker <rb@stylite.de>
* @copyright (c) 2014 by Ralf Becker <rb@stylite.de>
* @copyright (c) 2014/15 by Ralf Becker <rb@stylite.de>
* @version $Id$
*/
require_once('./phpgwapi/inc/class.egw_sharing.inc.php');
// set PHP_AUTH_USER from token in URL, must be called before header include, to be able to verify session
egw_sharing::init();
$GLOBALS['egw_info'] = array(
'flags' => array(
'disable_Template_class' => true,
@ -30,6 +27,6 @@ include('./header.inc.php');
if (!$GLOBALS['egw']->sharing)
{
egw_sharing::create_session();
egw_sharing::create_session(true); // true = mount into existing session
}
$GLOBALS['egw']->sharing->ServeRequest();