From 526a0cdb6845ddbce147c69c3e0c300316749023 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20=C3=96sterreicher?= <oesi@technikum-wien.at>
Date: Thu, 25 Feb 2010 08:14:00 +0000
Subject: [PATCH] =?UTF-8?q?Rechte=20Problem=20im=20Filesystem=20behoben.?=
 =?UTF-8?q?=20Sudo=20chown=20muss=20jetzt=20aktiviert=20sein=20f=C3=BCr=20?=
 =?UTF-8?q?www-data?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 cis/private/lehre/menu.php      |  17 +-----
 cis/private/lehre/pinboard.php  |  16 ++---
 cis/private/lehre/semupload.php |   5 +-
 cis/private/lehre/upload.php    |  28 ++++-----
 include/tw/cis_menu_lv.inc.php  | 100 ++++++++++++++++----------------
 5 files changed, 78 insertions(+), 88 deletions(-)

diff --git a/cis/private/lehre/menu.php b/cis/private/lehre/menu.php
index 7ffa7feaa..285780de1 100644
--- a/cis/private/lehre/menu.php
+++ b/cis/private/lehre/menu.php
@@ -400,22 +400,7 @@ function js_toggle_container(conid)
 	  			<td class="tdwrap">
 	  		<?php
 	                	$path = '../../../documents/'.strtolower($short).'/download';
-						if(!$dest_dir = is_dir($path))
-						{
-	
-							if(!is_dir($path))
-							{
-								if(!is_dir('../../../documents/'.strtolower($short)))
-									exec('mkdir -m 755 "../../../documents/'.strtolower($short).'"');
-								exec('mkdir -m 775 "../../../documents/'.strtolower($short).'/download"');
-								exec('chgrp teacher ../../../documents/'.strtolower($short).'/download');
-							}
-						}
-						if(is_dir($path))
-						{
-							$dest_dir = @dir($path);
-							echo '<a href="'.$dest_dir->path.'/" class="MenuItem" target="_blank"><img src="../../../skin/images/seperator.gif">&nbsp;Allgemeiner Download</a>';
-						}
+						echo '<a href="'.$path.'/" class="MenuItem" target="_blank"><img src="../../../skin/images/seperator.gif">&nbsp;Allgemeiner Download</a>';
 					?>
 				</td>
 			
diff --git a/cis/private/lehre/pinboard.php b/cis/private/lehre/pinboard.php
index b20d6bde2..adffb2353 100644
--- a/cis/private/lehre/pinboard.php
+++ b/cis/private/lehre/pinboard.php
@@ -673,10 +673,10 @@ function show(id)
 					{
 						if(!is_dir($path))
 						{
-							if(!is_dir('../../../documents/'.strtolower($short)))
-								exec('mkdir -m 755 "../../../documents/'.strtolower($short).'"');
-							exec('mkdir -m 775 "../../../documents/'.strtolower($short).'/lehrziele"');
-							exec('chgrp teacher ../../../documents/'.strtolower($short).'/lehrziele');
+							if(!is_dir(DOC_ROOT.'/documents/'.strtolower($short)))
+								exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.strtolower($short).'"');
+							exec('mkdir -m 775 "'.DOC_ROOT.'/documents/'.strtolower($short).'/lehrziele"');
+							exec('sudo chown :teacher "'.DOC_ROOT.'/documents/'.strtolower($short).'/lehrziele"');
 						}
 					}
 
@@ -712,10 +712,10 @@ function show(id)
 					{
 						if(!is_dir($path))
 						{
-							if(!is_dir('../../../documents/'.strtolower($short)))
-								exec('mkdir -m 775 "../../../documents/'.strtolower($short).'"');
-							exec('mkdir -m 775 "../../../documents/'.strtolower($short).'/download"');
-							exec('sudo chgrp teacher ../../../documents/'.strtolower($short).'/download');
+							if(!is_dir(DOC_ROOT.'/documents/'.strtolower($short)))
+								exec('mkdir -m 775 "'.DOC_ROOT.'/documents/'.strtolower($short).'"');
+							exec('mkdir -m 775 "'.DOC_ROOT.'/documents/'.strtolower($short).'/download"');
+							exec('sudo chown :teacher "'.DOC_ROOT.'/documents/'.strtolower($short).'/download"');
 						}
 
 					}
diff --git a/cis/private/lehre/semupload.php b/cis/private/lehre/semupload.php
index 4f978a109..1a24fd85b 100644
--- a/cis/private/lehre/semupload.php
+++ b/cis/private/lehre/semupload.php
@@ -31,7 +31,7 @@
     if(!$stg_obj->load($lv_obj->studiengang_kz))
     	die('Fehler beim Laden des Studienganges');
 
-    $openpath = '../../../documents/'.strtolower($stg_obj->kuerzel).'/'.$lv_obj->semester.'/'.strtolower($lv_obj->lehreverzeichnis).'/semesterplan/';
+    $openpath = DOC_ROOT.'/documents/'.strtolower($stg_obj->kuerzel).'/'.$lv_obj->semester.'/'.strtolower($lv_obj->lehreverzeichnis).'/semesterplan/';
 ?>
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 <html>
@@ -113,7 +113,10 @@ function ConfirmFile(handle)
 			   !stristr($fn, '.cgi') && !stristr($fn, '.pl'))
 			{
 				if(move_uploaded_file($_FILES['userfile']['tmp_name'],$openpath . $fn))
+				{
+					exec('sudo chown www-data:teacher "'.$openpath.$fn.'"');
 					echo "<center>Das File wurde erfolgreich hochgeladen</center>";
+				}
 				else
 					echo "<center>Fehler beim Upload! Bitte Versuchen Sie es erneut</center>";
 			}
diff --git a/cis/private/lehre/upload.php b/cis/private/lehre/upload.php
index fcee044b4..972751735 100644
--- a/cis/private/lehre/upload.php
+++ b/cis/private/lehre/upload.php
@@ -77,8 +77,9 @@
     else
     	$is_lector=false;
 
-	$upload_root = "../../../documents";
-
+	$upload_root = DOC_ROOT.'/documents';//"../../../documents";
+	$link_cut = DOC_ROOT.'/documents';
+	
 	if(isset($subdir))
 	{
 		if(substr_count($subdir, '..') > 0 || substr_count($subdir, '.') > 0)
@@ -636,11 +637,11 @@ A:hover {
 													  	 	 exec('chmod 664 "'.$uploadfile.'"');
 															 if($islector)
 															 {
-																exec('chgrp teacher "'.$uploadfile.'"');
+																exec('sudo chown :teacher "'.$uploadfile.'"');
 															 }
 															 else
 															 {
-																exec('chgrp student "'.$uploadfile.'"');
+																exec('sudo chown :student "'.$uploadfile.'"');
 															 }
 													  	 }
 													  }
@@ -659,11 +660,11 @@ A:hover {
 													  	  exec('chmod 664 "'.$uploadfile.'"');
 														  if($islector)
 														  {
-															exec('chgrp teacher "'.$uploadfile.'"');
+															exec('sudo chown :teacher "'.$uploadfile.'"');
 														  }
 														  else
 														  {
-															exec('chgrp student "'.$uploadfile.'"');
+															exec('sudo chown :student "'.$uploadfile.'"');
 														  }
 													  }
 												  }
@@ -692,11 +693,11 @@ A:hover {
 														  	   	   exec('chmod 664 "'.$uploadfile.'"');
 																   if($islector)
 																   {
-																		exec('chgrp teacher "'.$uploadfile.'"');
+																		exec('sudo chown :teacher "'.$uploadfile.'"');
 																   }
 																   else
 																   {
-																		exec('chgrp student "'.$uploadfile.'"');
+																		exec('sudo chown :student "'.$uploadfile.'"');
 																   }
 														  	   }
 														  }
@@ -715,11 +716,11 @@ A:hover {
 														  	  exec('chmod 664 "'.$uploadfile.'"');
 															  if($islector)
 															  {
-																exec('chgrp teacher "'.$uploadfile.'"');
+																exec('sudo chown :teacher "'.$uploadfile.'"');
 															  }
 															  else
 															  {
-																exec('chgrp student "'.$uploadfile.'"');
+																exec('sudo chown :student "'.$uploadfile.'"');
 															  }
 														  }
 													  }
@@ -848,11 +849,11 @@ A:hover {
 
 									if($islector)
 									{
-										exec('chgrp teacher "'.$dest_create_dir->path.'/'.$new_dir_name_text.'"');
+										exec('sudo chown :teacher "'.$dest_create_dir->path.'/'.$new_dir_name_text.'"');
 									}
 									else
 									{
-										exec('chgrp student "'.$dest_create_dir->path.'/'.$new_dir_name_text.'"');
+										exec('sudo chown :student "'.$dest_create_dir->path.'/'.$new_dir_name_text.'"');
 									}
 								}
 							}
@@ -1293,6 +1294,7 @@ A:hover {
 							{
 								if(!@is_dir($dest_dir->path.'/'.$entry) && substr($entry,0,1)!=".")
 								{
+									unset($check_state);
 									$null_file = false;
 									if(isset($_POST['_check_state_'.$file_count]))
 										$check_state = $_POST['_check_state_'.$file_count];
@@ -1307,7 +1309,7 @@ A:hover {
 									}
 									if(!isset($link_cut))
 										$link_cut='';
-									$link_path = mb_substr($dest_dir->path, mb_strlen($link_cut)).'/'.urlencode($entry);
+									$link_path = '../../../documents'.mb_substr($dest_dir->path, mb_strlen($link_cut)).'/'.urlencode($entry);
 									//+ durch %20 ersetzten damit Files mit leerzeichen geoeffnet werden koennen
 									$link_path = str_replace("+","%20",$link_path);
 									echo "</b></td><td align=\"left\" class='MarkLine'><b><font face=\"Arial,Helvetica,sans-serif\" color=\"#000000\" size=\"2\"><a href=\"$link_path\" target=\"_blank\">&nbsp;<img src=\"../../../skin/images/file.gif\" border=\"0\">&nbsp;$entry&nbsp;</a></font>";
diff --git a/include/tw/cis_menu_lv.inc.php b/include/tw/cis_menu_lv.inc.php
index 599aeba3b..b6f4692d8 100644
--- a/include/tw/cis_menu_lv.inc.php
+++ b/include/tw/cis_menu_lv.inc.php
@@ -84,7 +84,7 @@
 			if(!is_dir($dir_name))
 			{
 					exec('mkdir -m 755 "'.$dir_name.'"');
-					exec('chown www-data:teacher "'.$dir_name.'"');
+					exec('sudo chown www-data:teacher "'.$dir_name.'"');
 			}					
 							
 		  	/*
@@ -105,25 +105,25 @@
 		  	$dest_dir = @dir($dir_name);
 		  	if(!@is_dir($dest_dir->path))
 			{
-				if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz)))
+				if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz)))
 				{
-					exec('mkdir -m 755 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
-					exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
+					exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
+					exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
 				}
-				if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester))
+				if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester))
 				{
-					exec('mkdir -m 755 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
-					exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
+					exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
+					exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
 				}
-				if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name)))
+				if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name)))
 				{
-					exec('mkdir -m 755 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
-					exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
+					exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
+					exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
 				}
-				if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/semesterplan'))
+				if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/semesterplan'))
 				{
-					exec('mkdir -m 775 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/semesterplan"');
-					exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/semesterplan"');
+					exec('mkdir -m 775 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/semesterplan"');
+					exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/semesterplan"');
 				}
 			}
 
@@ -185,25 +185,25 @@
 		  	$dest_dir = @dir($dir_name);
 		  	if(!@is_dir($dest_dir->path))
 			{
-				if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz)))
+				if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz)))
 				{
-					exec('mkdir -m 755 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
-					exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
+					exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
+					exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
 				}
-				if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester))
+				if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester))
 				{
-					exec('mkdir -m 755 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
-					exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
+					exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
+					exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
 				}
-				if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name)))
+				if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name)))
 				{
-					exec('mkdir -m 755 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
-					exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
+					exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
+					exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
 				}
-				if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/download'))
+				if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/download'))
 				{
-					exec('mkdir -m 775 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/download"');
-					exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/download"');
+					exec('mkdir -m 775 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/download"');
+					exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/download"');
 				}
 			}
 
@@ -278,25 +278,25 @@
   	$dest_dir = @dir($dir_name);
   	if(!@is_dir($dest_dir->path))
 	{
-		if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz)))
+		if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz)))
 		{
-			exec('mkdir -m 755 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
-			exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
+			exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
+			exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
 		}
-		if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester))
+		if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester))
 		{
-			exec('mkdir -m 755 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
-			exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
+			exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
+			exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
 		}
-		if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name)))
+		if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name)))
 		{
-			exec('mkdir -m 755 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
-			exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
+			exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
+			exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
 		}
-		if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/leistung'))
+		if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/leistung'))
 		{
-			exec('mkdir -m 775 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/leistung"');
-			exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/leistung"');
+			exec('mkdir -m 775 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/leistung"');
+			exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/leistung"');
 		}
 	}
 
@@ -534,30 +534,30 @@
 			/*if(!@is_dir($dir_name))
 			{
 				exec('mkdir -m 775 "'.$dir_name.'"');
-				exec('chown www-data:student "'.$dir_name.'"');
+				exec('sudo chown www-data:student "'.$dir_name.'"');
 			}*/
 		  	$dest_dir = @dir($dir_name);
 		  	if(!@is_dir($dest_dir->path))
 			{
-				if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz)))
+				if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz)))
 				{
-					exec('mkdir -m 755 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
-					exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
+					exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
+					exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'"');
 				}
-				if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester))
+				if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester))
 				{
-					exec('mkdir -m 755 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
-					exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
+					exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
+					exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'"');
 				}
-				if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name)))
+				if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name)))
 				{
-					exec('mkdir -m 755 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
-					exec('chown www-data:teacher "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
+					exec('mkdir -m 755 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
+					exec('sudo chown www-data:teacher "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'"');
 				}
-				if(!@is_dir($DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/upload'))
+				if(!@is_dir(DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/upload'))
 				{
-					exec('mkdir -m 775 "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/upload"');
-					exec('chown www-data:student "'.$DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/upload"');
+					exec('mkdir -m 775 "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/upload"');
+					exec('sudo chown www-data:student "'.DOC_ROOT.'/documents/'.mb_strtolower($kurzbz).'/'.$semester.'/'.mb_strtolower($short_short_name).'/upload"');
 				}
 			}