diff --git a/apps/admin_migrate/appinfo/app.php b/apps/admin_migrate/appinfo/app.php
old mode 100644
new mode 100755
index e45d3f6a52..07672da6da
--- a/apps/admin_migrate/appinfo/app.php
+++ b/apps/admin_migrate/appinfo/app.php
@@ -28,6 +28,6 @@ OC_APP::registerAdmin('admin_migrate','settings');
 $entry = array(
 	'id' => "admin_migrate_settings",
 	'order'=>1,
-	'href' => OC_Helper::linkTo( "admin_migrate", "settings.php" ),
+	'href' => OCP\Util::linkTo( "admin_migrate", "settings.php" ),
 	'name' => 'Export'
 );
diff --git a/apps/bookmarks/appinfo/app.php b/apps/bookmarks/appinfo/app.php
index d2381e3ef9..449969d8e5 100755
--- a/apps/bookmarks/appinfo/app.php
+++ b/apps/bookmarks/appinfo/app.php
@@ -13,7 +13,7 @@ OC::$CLASSPATH['OC_Search_Provider_Bookmarks'] = 'apps/bookmarks/lib/search.php'
 OC_App::register( array( 'order' => 70, 'id' => 'bookmark', 'name' => 'Bookmarks' ));
 
 $l = new OC_l10n('bookmarks');
-OC_App::addNavigationEntry( array( 'id' => 'bookmarks_index', 'order' => 70, 'href' => OC_Helper::linkTo( 'bookmarks', 'index.php' ), 'icon' => OC_Helper::imagePath( 'bookmarks', 'bookmarks.png' ), 'name' => $l->t('Bookmarks')));
+OC_App::addNavigationEntry( array( 'id' => 'bookmarks_index', 'order' => 70, 'href' => OCP\Util::linkTo( 'bookmarks', 'index.php' ), 'icon' => OC_Helper::imagePath( 'bookmarks', 'bookmarks.png' ), 'name' => $l->t('Bookmarks')));
 
 OC_App::registerPersonal('bookmarks', 'settings');
 OCP\Util::addscript('bookmarks','bookmarksearch');
diff --git a/apps/bookmarks/templates/bookmarklet.php b/apps/bookmarks/templates/bookmarklet.php
old mode 100644
new mode 100755
index a2ca0bba0e..1802814d4b
--- a/apps/bookmarks/templates/bookmarklet.php
+++ b/apps/bookmarks/templates/bookmarklet.php
@@ -3,6 +3,6 @@
 function createBookmarklet() {
 	$l = OC_L10N::get('bookmarks');
 	echo '<small>' . $l->t('Drag this to your browser bookmarks and click it, when you want to bookmark a webpage quickly:') . '</small>'
-	. '<a class="button bookmarklet" href="javascript:(function(){var a=window,b=document,c=encodeURIComponent,d=a.open(\'' . OC_Helper::linkToAbsolute('bookmarks', 'addBm.php') . '?output=popup&url=\'+c(b.location),\'bkmk_popup\',\'left=\'+((a.screenX||a.screenLeft)+10)+\',top=\'+((a.screenY||a.screenTop)+10)+\',height=230px,width=230px,resizable=1,alwaysRaised=1\');a.setTimeout(function(){d.focus()},300);})();">'
+	. '<a class="button bookmarklet" href="javascript:(function(){var a=window,b=document,c=encodeURIComponent,d=a.open(\'' . OCP\Util::linkToAbsolute('bookmarks', 'addBm.php') . '?output=popup&url=\'+c(b.location),\'bkmk_popup\',\'left=\'+((a.screenX||a.screenLeft)+10)+\',top=\'+((a.screenY||a.screenTop)+10)+\',height=230px,width=230px,resizable=1,alwaysRaised=1\');a.setTimeout(function(){d.focus()},300);})();">'
 	. $l->t('Read later') . '</a>';
 } 
diff --git a/apps/calendar/appinfo/app.php b/apps/calendar/appinfo/app.php
index e42358422c..9a60aaeeb9 100755
--- a/apps/calendar/appinfo/app.php
+++ b/apps/calendar/appinfo/app.php
@@ -18,7 +18,7 @@ OC_App::register( array(
 OC_App::addNavigationEntry( array(
   'id' => 'calendar_index',
   'order' => 10,
-  'href' => OC_Helper::linkTo( 'calendar', 'index.php' ),
+  'href' => OCP\Util::linkTo( 'calendar', 'index.php' ),
   'icon' => OC_Helper::imagePath( 'calendar', 'icon.svg' ),
   'name' => $l->t('Calendar')));
 OC_App::registerPersonal('calendar', 'settings');
diff --git a/apps/calendar/lib/calendar.php b/apps/calendar/lib/calendar.php
old mode 100644
new mode 100755
index 321f4c73ba..2aba83d32a
--- a/apps/calendar/lib/calendar.php
+++ b/apps/calendar/lib/calendar.php
@@ -241,7 +241,7 @@ class OC_Calendar_Calendar{
 
 	public static function getEventSourceInfo($calendar){
 		return array(
-			'url' => OC_Helper::linkTo('calendar', 'ajax/events.php').'?calendar_id='.$calendar['id'],
+			'url' => OCP\Util::linkTo('calendar', 'ajax/events.php').'?calendar_id='.$calendar['id'],
 			'backgroundColor' => $calendar['calendarcolor'],
 			'borderColor' => '#888',
 			'textColor' => 'black',
diff --git a/apps/calendar/lib/search.php b/apps/calendar/lib/search.php
index fc54431435..fae2da3b02 100755
--- a/apps/calendar/lib/search.php
+++ b/apps/calendar/lib/search.php
@@ -36,7 +36,7 @@ class OC_Search_Provider_Calendar extends OC_Search_Provider{
 					}else{
 						$info = $l->t('Date') . ': ' . $start_dt->format('d.m.y H:i') . ' - ' . $end_dt->format('d.m.y H:i');
 					}
-					$link = OC_Helper::linkTo('calendar', 'index.php').'?showevent='.urlencode($object['id']);
+					$link = OCP\Util::linkTo('calendar', 'index.php').'?showevent='.urlencode($object['id']);
 					$results[]=new OC_Search_Result($object['summary'],$info, $link,$l->t('Cal.'));//$name,$text,$link,$type
 				}
 			}
diff --git a/apps/calendar/templates/calendar.php b/apps/calendar/templates/calendar.php
index 4a3c653d6f..f8bd91640e 100755
--- a/apps/calendar/templates/calendar.php
+++ b/apps/calendar/templates/calendar.php
@@ -19,7 +19,7 @@
 				var missing_field_totime = '<?php echo addslashes($l->t('To Time')) ?>';
 				var missing_field_startsbeforeends = '<?php echo addslashes($l->t('The event ends before it starts')) ?>';
 				var missing_field_dberror = '<?php echo addslashes($l->t('There was a database fail')) ?>';
-				var totalurl = '<?php echo OC_Helper::linkToAbsolute('calendar', 'caldav.php'); ?>/calendars';
+				var totalurl = '<?php echo OCP\Util::linkToAbsolute('calendar', 'caldav.php'); ?>/calendars';
 				var firstDay = '<?php echo (OC_Preferences::getValue(OCP\USER::getUser(), 'calendar', 'firstday', 'mo') == 'mo' ? '1' : '0'); ?>';
 				$(document).ready(function() {
 				<?php
diff --git a/apps/calendar/templates/settings.php b/apps/calendar/templates/settings.php
old mode 100644
new mode 100755
index 3488fec018..ac32b79215
--- a/apps/calendar/templates/settings.php
+++ b/apps/calendar/templates/settings.php
@@ -47,6 +47,6 @@
         </table>
 
         <?php echo $l->t('Calendar CalDAV syncing address:');?>
-        <code><?php echo OC_Helper::linkToAbsolute('calendar', 'caldav.php'); ?></code><br />
+        <code><?php echo OCP\Util::linkToAbsolute('calendar', 'caldav.php'); ?></code><br />
         </fieldset>
 </form>
diff --git a/apps/calendar/templates/share.dropdown.php b/apps/calendar/templates/share.dropdown.php
index cd44988af9..b11a4ef94c 100755
--- a/apps/calendar/templates/share.dropdown.php
+++ b/apps/calendar/templates/share.dropdown.php
@@ -73,5 +73,5 @@ echo html_select_options($allgroups, array());
 </ul>
 <div id="public">
 	<input type="checkbox" id="publish" <?php echo ($public['share'])?'checked="checked"':'' ?>><label for="publish"><?php echo $l->t('make public'); ?></label><br>
-	<input type="text" id="public_token" value="<?php echo OC_Helper::linkToAbsolute('apps/calendar', 'share.php?t=' . $public['share'], null, true) ; ?>" onmouseover="$('#public_token').select();" style="<?php echo (!$public['share'])?'display:none':'' ?>">
+	<input type="text" id="public_token" value="<?php echo OCP\Util::linkToAbsolute('apps/calendar', 'share.php?t=' . $public['share'], null, true) ; ?>" onmouseover="$('#public_token').select();" style="<?php echo (!$public['share'])?'display:none':'' ?>">
 </div>
\ No newline at end of file
diff --git a/apps/contacts/appinfo/app.php b/apps/contacts/appinfo/app.php
index 20dfaccde7..2c4da2fd6c 100755
--- a/apps/contacts/appinfo/app.php
+++ b/apps/contacts/appinfo/app.php
@@ -17,7 +17,7 @@ OC_App::register( array(
 OC_App::addNavigationEntry( array(
   'id' => 'contacts_index',
   'order' => 10,
-  'href' => OC_Helper::linkTo( 'contacts', 'index.php' ),
+  'href' => OCP\Util::linkTo( 'contacts', 'index.php' ),
   'icon' => OC_Helper::imagePath( 'settings', 'users.svg' ),
   'name' => OC_L10N::get('contact')->t('Contacts') ));
 
diff --git a/apps/contacts/lib/hooks.php b/apps/contacts/lib/hooks.php
index 9939075a46..2e86246271 100755
--- a/apps/contacts/lib/hooks.php
+++ b/apps/contacts/lib/hooks.php
@@ -40,7 +40,7 @@ class OC_Contacts_Hooks{
 	}
 
 	static public function getCalenderSources($parameters) {
-		$base_url = OC_Helper::linkTo('calendar', 'ajax/events.php').'?calendar_id=';
+		$base_url = OCP\Util::linkTo('calendar', 'ajax/events.php').'?calendar_id=';
 		foreach(OC_Contacts_Addressbook::all(OCP\USER::getUser()) as $addressbook) {
 			$parameters['sources'][] =
 				array(
diff --git a/apps/contacts/lib/search.php b/apps/contacts/lib/search.php
index a53556d8bd..e2aae58189 100755
--- a/apps/contacts/lib/search.php
+++ b/apps/contacts/lib/search.php
@@ -18,7 +18,7 @@ class OC_Search_Provider_Contacts extends OC_Search_Provider{
 			$vcards = OC_Contacts_VCard::all($addressbook['id']);
 			foreach($vcards as $vcard){
 				if(substr_count(strtolower($vcard['fullname']), strtolower($query)) > 0){
-					$link = OC_Helper::linkTo('contacts', 'index.php').'?id='.urlencode($vcard['id']);
+					$link = OCP\Util::linkTo('contacts', 'index.php').'?id='.urlencode($vcard['id']);
 					$results[]=new OC_Search_Result($vcard['fullname'],'', $link,$l->t('Contact'));//$name,$text,$link,$type
 				}
 			}
diff --git a/apps/contacts/templates/index.php b/apps/contacts/templates/index.php
index b78818c503..eb229a70a5 100755
--- a/apps/contacts/templates/index.php
+++ b/apps/contacts/templates/index.php
@@ -1,5 +1,5 @@
 <script type='text/javascript'>
-	var totalurl = '<?php echo OC_Helper::linkToAbsolute('contacts', 'carddav.php'); ?>/addressbooks';
+	var totalurl = '<?php echo OCP\Util::linkToAbsolute('contacts', 'carddav.php'); ?>/addressbooks';
 	var categories = <?php echo json_encode($_['categories']); ?>;
 	var lang = '<?php echo OC_Preferences::getValue(OCP\USER::getUser(), 'core', 'lang', 'en'); ?>';
 </script>
@@ -16,7 +16,7 @@
 </div>
 	<div id="bottomcontrols">
 		<form>
-			<img class="svg" id="contacts_newcontact" src="<?php echo OC_Helper::linkTo('contacts', 'img/contact-new.svg'); ?>" alt="<?php echo $l->t('Add Contact'); ?>"  title="<?php echo $l->t('Add Contact'); ?>" />
+			<img class="svg" id="contacts_newcontact" src="<?php echo OCP\Util::linkTo('contacts', 'img/contact-new.svg'); ?>" alt="<?php echo $l->t('Add Contact'); ?>"  title="<?php echo $l->t('Add Contact'); ?>" />
 			<img class="svg" id="chooseaddressbook" src="core/img/actions/settings.svg" alt="<?php echo $l->t('Addressbooks'); ?>" title="<?php echo $l->t('Addressbooks'); ?>" />
 		</form>
 	</div>
diff --git a/apps/contacts/templates/part.contact.php b/apps/contacts/templates/part.contact.php
old mode 100644
new mode 100755
index bbe2014332..5e0607e319
--- a/apps/contacts/templates/part.contact.php
+++ b/apps/contacts/templates/part.contact.php
@@ -23,7 +23,7 @@ $id = isset($_['id']) ? $_['id'] : '';
 
 	<div id="contact_photo" class="contactsection">
 
-	<form class="float" id="file_upload_form" action="<?php echo OC_Helper::linkTo('contacts', 'ajax/uploadphoto.php'); ?>" method="post" enctype="multipart/form-data" target="file_upload_target">
+	<form class="float" id="file_upload_form" action="<?php echo OCP\Util::linkTo('contacts', 'ajax/uploadphoto.php'); ?>" method="post" enctype="multipart/form-data" target="file_upload_target">
 		<div class="tip propertycontainer" id="contacts_details_photo_wrapper" title="<?php echo $l->t('Click or drop to upload picture'); ?> (max <?php echo $_['uploadMaxHumanFilesize']; ?>)" data-element="PHOTO">
 		<!-- img style="padding: 1em;" id="contacts_details_photo" alt="Profile picture"  src="photo.php?id=<?php echo $_['id']; ?>" / -->
 		<progress id="contacts_details_photo_progress" style="display:none;" value="0" max="100">0 %</progress>
diff --git a/apps/contacts/templates/part.contactphoto.php b/apps/contacts/templates/part.contactphoto.php
old mode 100644
new mode 100755
index 3c11e4d158..bddf4cc8a8
--- a/apps/contacts/templates/part.contactphoto.php
+++ b/apps/contacts/templates/part.contactphoto.php
@@ -10,7 +10,7 @@ $rand = isset($_['refresh'])?'&refresh='.rand():'';
 	<li><a class="svg upload" title="<?php echo $l->t('Upload new photo'); ?>"></a></li>
 	<li><a class="svg cloud" title="<?php echo $l->t('Select photo from ownCloud'); ?>"></a></li>
 </ul>
-<img class="loading" id="contacts_details_photo" <?php echo $wattr; ?> <?php echo $hattr; ?> src="<?php echo OC_Helper::linkToAbsolute('contacts', 'photo.php'); ?>?id=<?php echo $id.$rand; ?>" />
+<img class="loading" id="contacts_details_photo" <?php echo $wattr; ?> <?php echo $hattr; ?> src="<?php echo OCP\Util::linkToAbsolute('contacts', 'photo.php'); ?>?id=<?php echo $id.$rand; ?>" />
 <progress id="contacts_details_photo_progress" style="display:none;" value="0" max="100">0 %</progress>
 
 
diff --git a/apps/contacts/templates/part.cropphoto.php b/apps/contacts/templates/part.cropphoto.php
index 2284d49aca..599951d9a9 100755
--- a/apps/contacts/templates/part.cropphoto.php
+++ b/apps/contacts/templates/part.cropphoto.php
@@ -38,13 +38,13 @@ OCP\Util::writeLog('contacts','templates/part.cropphoto.php: tmp_path: '.$tmp_pa
 		return true;
 	});*/
 </script>
-<img id="cropbox" src="<?php echo OC_Helper::linkToAbsolute('contacts', 'dynphoto.php'); ?>?tmp_path=<?php echo urlencode($tmp_path); ?>" />
+<img id="cropbox" src="<?php echo OCP\Util::linkToAbsolute('contacts', 'dynphoto.php'); ?>?tmp_path=<?php echo urlencode($tmp_path); ?>" />
 <form id="cropform"
 	class="coords"
 	method="post"
 	enctype="multipart/form-data"
 	target="crop_target"
-	action="<?php echo OC_Helper::linkToAbsolute('contacts', 'ajax/savecrop.php'); ?>">
+	action="<?php echo OCP\Util::linkToAbsolute('contacts', 'ajax/savecrop.php'); ?>">
 
 	<input type="hidden" id="id" name="id" value="<?php echo $id; ?>" />
 	<input type="hidden" id="tmp_path" name="tmp_path" value="<?php echo $tmp_path; ?>" />
diff --git a/apps/contacts/templates/part.importaddressbook.php b/apps/contacts/templates/part.importaddressbook.php
index 45e7366f71..9a13ba1b0c 100755
--- a/apps/contacts/templates/part.importaddressbook.php
+++ b/apps/contacts/templates/part.importaddressbook.php
@@ -22,7 +22,7 @@
 	</td>
 </tr>
 </table>
-<form id="import_upload_form" action="<?php echo OC_Helper::linkTo('contacts', 'ajax/uploadimport.php'); ?>" method="post" enctype="multipart/form-data" target="import_upload_target">
+<form id="import_upload_form" action="<?php echo OCP\Util::linkTo('contacts', 'ajax/uploadimport.php'); ?>" method="post" enctype="multipart/form-data" target="import_upload_target">
 <input type="hidden" name="MAX_FILE_SIZE" value="<?php echo $_['uploadMaxFilesize'] ?>" id="max_upload">
 <input id="import_upload_start" type="file" accept="text/*" name="importfile" />
 <input id="close_button" style="float: left;" type="button" onclick="Contacts.UI.Addressbooks.cancel(this);" value="<?php echo $l->t("Cancel"); ?>">
diff --git a/apps/contacts/templates/settings.php b/apps/contacts/templates/settings.php
index 0445f8ae49..af0c766d8e 100755
--- a/apps/contacts/templates/settings.php
+++ b/apps/contacts/templates/settings.php
@@ -4,9 +4,9 @@
 		<?php echo $l->t('CardDAV syncing addresses'); ?> (<a href="http://owncloud.org/synchronisation/" target="_blank"><?php echo $l->t('more info'); ?></a>)
 		<dl>
 		<dt><?php echo $l->t('Primary address (Kontact et al)'); ?></dt>
-		<dd><code><?php echo OC_Helper::linkToAbsolute('contacts', 'carddav.php'); ?>/</code></dd>
+		<dd><code><?php echo OCP\Util::linkToAbsolute('contacts', 'carddav.php'); ?>/</code></dd>
 		<dt><?php echo $l->t('iOS/OS X'); ?></dt>
-		<dd><code><?php echo OC_Helper::linkToAbsolute('contacts', 'carddav.php'); ?>/principals/<?php echo OCP\USER::getUser(); ?></code>/</dd>
+		<dd><code><?php echo OCP\Util::linkToAbsolute('contacts', 'carddav.php'); ?>/principals/<?php echo OCP\USER::getUser(); ?></code>/</dd>
 		</dl>
 		Powered by <a href="http://geonames.org/" target="_blank">geonames.org webservice</a>
 	</fieldset>
diff --git a/apps/external/appinfo/app.php b/apps/external/appinfo/app.php
old mode 100644
new mode 100755
index 7f8ef3043b..b69cc3b2d6
--- a/apps/external/appinfo/app.php
+++ b/apps/external/appinfo/app.php
@@ -31,5 +31,5 @@ OC_App::register(array('order' => 70, 'id' => 'external', 'name' => 'External'))
 $sites = OC_External::getSites();
 for ($i = 0; $i < sizeof($sites); $i++) {
 	OC_App::addNavigationEntry(
-			array('id' => 'external_index' . ($i + 1), 'order' => 80 + $i, 'href' => OC_Helper::linkTo('external', 'index.php') . '?id=' . ($i + 1), 'icon' => OC_Helper::imagePath('external', 'external.png'), 'name' => $sites[$i][0]));
+			array('id' => 'external_index' . ($i + 1), 'order' => 80 + $i, 'href' => OCP\Util::linkTo('external', 'index.php') . '?id=' . ($i + 1), 'icon' => OC_Helper::imagePath('external', 'external.png'), 'name' => $sites[$i][0]));
 }
diff --git a/apps/files/appinfo/app.php b/apps/files/appinfo/app.php
old mode 100644
new mode 100755
index c4a2ee7407..40523521d9
--- a/apps/files/appinfo/app.php
+++ b/apps/files/appinfo/app.php
@@ -5,6 +5,6 @@ $l=OC_L10N::get('files');
 
 OC_App::register( array( "order" => 2, "id" => "files", "name" => "Files" ));
 
-OC_App::addNavigationEntry( array( "id" => "files_index", "order" => 0, "href" => OC_Helper::linkTo( "files", "index.php" ), "icon" => OC_Helper::imagePath( "core", "places/home.svg" ), "name" => $l->t("Files") ));
+OC_App::addNavigationEntry( array( "id" => "files_index", "order" => 0, "href" => OCP\Util::linkTo( "files", "index.php" ), "icon" => OC_Helper::imagePath( "core", "places/home.svg" ), "name" => $l->t("Files") ));
 
 OC_Search::registerProvider('OC_Search_Provider_File');
diff --git a/apps/files/index.php b/apps/files/index.php
index 2d3b0a13b2..9634a72586 100755
--- a/apps/files/index.php
+++ b/apps/files/index.php
@@ -74,11 +74,11 @@ foreach( explode( "/", $dir ) as $i ){
 // make breadcrumb und filelist markup
 $list = new OC_Template( "files", "part.list", "" );
 $list->assign( "files", $files );
-$list->assign( "baseURL", OC_Helper::linkTo("files", "index.php")."?dir=");
-$list->assign( "downloadURL", OC_Helper::linkTo("files", "download.php")."?file=");
+$list->assign( "baseURL", OCP\Util::linkTo("files", "index.php")."?dir=");
+$list->assign( "downloadURL", OCP\Util::linkTo("files", "download.php")."?file=");
 $breadcrumbNav = new OC_Template( "files", "part.breadcrumb", "" );
 $breadcrumbNav->assign( "breadcrumb", $breadcrumb );
-$breadcrumbNav->assign( "baseURL", OC_Helper::linkTo("files", "index.php")."?dir=");
+$breadcrumbNav->assign( "baseURL", OCP\Util::linkTo("files", "index.php")."?dir=");
 
 $upload_max_filesize = OC_Helper::computerFileSize(ini_get('upload_max_filesize'));
 $post_max_size = OC_Helper::computerFileSize(ini_get('post_max_size'));
diff --git a/apps/files/templates/index.php b/apps/files/templates/index.php
old mode 100644
new mode 100755
index fc385e1ed3..2519364838
--- a/apps/files/templates/index.php
+++ b/apps/files/templates/index.php
@@ -12,7 +12,7 @@
 				</ul>
 			</div>
 			<div class="file_upload_wrapper svg">
-				<form data-upload-id='1' class="file_upload_form" action="<?php echo OC_Helper::linkto('files', 'ajax/upload.php'); ?>" method="post" enctype="multipart/form-data" target="file_upload_target_1">
+				<form data-upload-id='1' class="file_upload_form" action="<?php echo OCP\Util::linkTo('files', 'ajax/upload.php'); ?>" method="post" enctype="multipart/form-data" target="file_upload_target_1">
 					<input type="hidden" name="MAX_FILE_SIZE" value="<?php echo $_['uploadMaxFilesize'] ?>" id="max_upload">
 					<input type="hidden" class="max_human_file_size" value="(max <?php echo $_['uploadMaxHumanFilesize']; ?>)">
 					<input type="hidden" name="dir" value="<?php echo htmlentities($_['dir']) ?>" id="dir">
diff --git a/apps/files_sharing/get.php b/apps/files_sharing/get.php
index f6ae4bf075..32bca2ad6e 100755
--- a/apps/files_sharing/get.php
+++ b/apps/files_sharing/get.php
@@ -52,11 +52,11 @@ if ($source !== false) {
 		OCP\Util::addStyle("files", "files");
 		$breadcrumbNav = new OC_Template("files", "part.breadcrumb", "");
 		$breadcrumbNav->assign("breadcrumb", $breadcrumb);
-		$breadcrumbNav->assign("baseURL", OC_Helper::linkTo("files_sharing", "get.php")."?token=".$token."&path=");
+		$breadcrumbNav->assign("baseURL", OCP\Util::linkTo("files_sharing", "get.php")."?token=".$token."&path=");
 		$list = new OC_Template("files", "part.list", "");
 		$list->assign("files", $files);
-		$list->assign("baseURL", OC_Helper::linkTo("files_sharing", "get.php")."?token=".$token."&path=");
-		$list->assign("downloadURL", OC_Helper::linkTo("files_sharing", "get.php")."?token=".$token."&path=");
+		$list->assign("baseURL", OCP\Util::linkTo("files_sharing", "get.php")."?token=".$token."&path=");
+		$list->assign("downloadURL", OCP\Util::linkTo("files_sharing", "get.php")."?token=".$token."&path=");
 		$list->assign("readonly", true);
 		$tmpl = new OC_Template("files", "index", "user");
 		$tmpl->assign("fileList", $list->fetchPage());
diff --git a/apps/gallery/appinfo/app.php b/apps/gallery/appinfo/app.php
index 3eec805957..8f65757622 100755
--- a/apps/gallery/appinfo/app.php
+++ b/apps/gallery/appinfo/app.php
@@ -37,7 +37,7 @@ OC_App::register(array(
 OC_App::addNavigationEntry( array(
  'id' => 'gallery_index',
  'order' => 20,
- 'href' => OC_Helper::linkTo('gallery', 'index.php'),
+ 'href' => OCP\Util::linkTo('gallery', 'index.php'),
  'icon' => OC_Helper::imagePath('core', 'places/picture.svg'),
  'name' => $l->t('Pictures')));
 
@@ -47,7 +47,7 @@ class OC_GallerySearchProvider extends OC_Search_Provider{
 		$result = $stmt->execute(array(OCP\USER::getUser(),'%'.$query.'%'));
 		$results=array();
 		while($row=$result->fetchRow()){
-			$results[]=new OC_Search_Result($row['album_name'],'',OC_Helper::linkTo('gallery', 'index.php').'?view='.$row['album_name'],'Galleries');
+			$results[]=new OC_Search_Result($row['album_name'],'',OCP\Util::linkTo('gallery', 'index.php').'?view='.$row['album_name'],'Galleries');
 		}
 		return $results;
 	}
diff --git a/apps/gallery/templates/index.php b/apps/gallery/templates/index.php
index b550d262a0..c9a6fb1562 100755
--- a/apps/gallery/templates/index.php
+++ b/apps/gallery/templates/index.php
@@ -24,7 +24,7 @@ $l = OC_L10N::get('gallery');
 		</div>
 	</div>
 	<div id="g-album-loading" class="crumb" style="display:none">
-		<img src="<?php echo OC_Helper::linkto('gallery', 'img/loading.gif'); ?>">
+		<img src="<?php echo OCP\Util::linkTo('gallery', 'img/loading.gif'); ?>">
 	</div>
 </div>
 <div id="gallery_list">
diff --git a/apps/media/appinfo/app.php b/apps/media/appinfo/app.php
index 10f5ec0ff1..11aeac2b5b 100755
--- a/apps/media/appinfo/app.php
+++ b/apps/media/appinfo/app.php
@@ -29,6 +29,6 @@ OC_APP::registerPersonal('media','settings');
 
 OC_App::register( array( 'order' => 3, 'id' => 'media', 'name' => 'Media' ));
 
-OC_App::addNavigationEntry(array('id' => 'media_index', 'order' => 2, 'href' => OC_Helper::linkTo('media', 'index.php'), 'icon' => OC_Helper::imagePath('core', 'places/music.svg'), 'name' => $l->t('Music')));
+OC_App::addNavigationEntry(array('id' => 'media_index', 'order' => 2, 'href' => OCP\Util::linkTo('media', 'index.php'), 'icon' => OC_Helper::imagePath('core', 'places/music.svg'), 'name' => $l->t('Music')));
 
 OC_Search::registerProvider('OC_MediaSearchProvider');
diff --git a/apps/media/lib_ampache.php b/apps/media/lib_ampache.php
old mode 100644
new mode 100755
index 97c0930860..e84c3a00ae
--- a/apps/media/lib_ampache.php
+++ b/apps/media/lib_ampache.php
@@ -207,7 +207,7 @@ class OC_MEDIA_AMPACHE{
 		echo("\t\t<title>$name</title>\n");
 		echo("\t\t<artist id='$artist'>$artistName</artist>\n");
 		echo("\t\t<album id='$album'>$albumName</album>\n");
-		$url=OC_Helper::linkToAbsolute('media', 'server/xml.server.php')."?action=play&song=$id&auth={$_GET['auth']}";
+		$url=OCP\Util::linkToAbsolute('media', 'server/xml.server.php')."?action=play&song=$id&auth={$_GET['auth']}";
 		$url=self::fixXmlString($url);
 		echo("\t\t<url>$url</url>\n");
 		echo("\t\t<time>{$song['song_length']}</time>\n");
diff --git a/apps/media/lib_media.php b/apps/media/lib_media.php
old mode 100644
new mode 100755
index a4e5a5dfeb..5b3bfd8747
--- a/apps/media/lib_media.php
+++ b/apps/media/lib_media.php
@@ -90,18 +90,18 @@ class OC_MediaSearchProvider extends OC_Search_Provider{
 		$songs=OC_MEDIA_COLLECTION::getSongs(0,0,$query);
 		$results=array();
 		foreach($artists as $artist){
-			$results[]=new OC_Search_Result($artist['artist_name'],'',OC_Helper::linkTo( 'media', 'index.php').'#artist='.urlencode($artist['artist_name']),'Music');
+			$results[]=new OC_Search_Result($artist['artist_name'],'',OCP\Util::linkTo( 'media', 'index.php').'#artist='.urlencode($artist['artist_name']),'Music');
 		}
 		foreach($albums as $album){
 			$artist=OC_MEDIA_COLLECTION::getArtistName($album['album_artist']);
-			$results[]=new OC_Search_Result($album['album_name'],'by '.$artist,OC_Helper::linkTo( 'media', 'index.php').'#artist='.urlencode($artist).'&album='.urlencode($album['album_name']),'Music');
+			$results[]=new OC_Search_Result($album['album_name'],'by '.$artist,OCP\Util::linkTo( 'media', 'index.php').'#artist='.urlencode($artist).'&album='.urlencode($album['album_name']),'Music');
 		}
 		foreach($songs as $song){
 			$minutes=floor($song['song_length']/60);
 			$secconds=$song['song_length']%60;
 			$artist=OC_MEDIA_COLLECTION::getArtistName($song['song_artist']);
 			$album=OC_MEDIA_COLLECTION::getalbumName($song['song_album']);
-			$results[]=new OC_Search_Result($song['song_name'],"by $artist, in $album $minutes:$secconds",OC_Helper::linkTo( 'media', 'index.php').'#artist='.urlencode($artist).'&album='.urlencode($album).'&song='.urlencode($song['song_name']),'Music');
+			$results[]=new OC_Search_Result($song['song_name'],"by $artist, in $album $minutes:$secconds",OCP\Util::linkTo( 'media', 'index.php').'#artist='.urlencode($artist).'&album='.urlencode($album).'&song='.urlencode($song['song_name']),'Music');
 		}
 		return $results;
 	}
diff --git a/apps/media/templates/settings.php b/apps/media/templates/settings.php
old mode 100644
new mode 100755
index 941c17ff59..2fe0b945a6
--- a/apps/media/templates/settings.php
+++ b/apps/media/templates/settings.php
@@ -2,6 +2,6 @@
 	<fieldset class="personalblock">
 		<strong>Media</strong><br />
 		Ampache address: 
-		<code><?php echo OC_Helper::linkToAbsolute('media', ''); ?></code><br />
+		<code><?php echo OCP\Util::linkToAbsolute('media', ''); ?></code><br />
 	</fieldset>
 </form>
diff --git a/apps/media/tomahawk.php b/apps/media/tomahawk.php
index f3f3fd1c2d..af97c444eb 100755
--- a/apps/media/tomahawk.php
+++ b/apps/media/tomahawk.php
@@ -58,7 +58,7 @@ $album=OC_MEDIA_COLLECTION::getAlbumId($album,$artist);
 
 $songs=OC_MEDIA_COLLECTION::getSongs($artist,$album,$song);
 
-$baseUrl=OC_Util::getServerURL().OC_Helper::linkTo('media','tomahawk.php');
+$baseUrl=OC_Util::getServerURL().OCP\Util::linkTo('media','tomahawk.php');
 
 $results=array();
 foreach($songs as $song) {
diff --git a/apps/user_ldap/appinfo/app.php b/apps/user_ldap/appinfo/app.php
old mode 100644
new mode 100755
index 113c8d6b7b..0fec108484
--- a/apps/user_ldap/appinfo/app.php
+++ b/apps/user_ldap/appinfo/app.php
@@ -41,7 +41,7 @@ OC_Group::useBackend( new OC_GROUP_LDAP() );
 $entry = array(
 	'id' => 'user_ldap_settings',
 	'order'=>1,
-	'href' => OC_Helper::linkTo( 'user_ldap', 'settings.php' ),
+	'href' => OCP\Util::linkTo( 'user_ldap', 'settings.php' ),
 	'name' => 'LDAP'
 );
 // OC_App::addNavigationSubEntry( "core_users", $entry);
diff --git a/apps/user_migrate/appinfo/app.php b/apps/user_migrate/appinfo/app.php
index 91e69fe191..0e9f69fbed 100755
--- a/apps/user_migrate/appinfo/app.php
+++ b/apps/user_migrate/appinfo/app.php
@@ -29,7 +29,7 @@ OCP\Util::addscript( 'user_migrate', 'export');
 $entry = array(
 	'id' => "user_migrate_settings",
 	'order'=>1,
-	'href' => OC_Helper::linkTo( "user_migrate", "admin.php" ),
+	'href' => OCP\Util::linkTo( "user_migrate", "admin.php" ),
 	'name' => 'Import'
 );
 ?>
\ No newline at end of file
diff --git a/apps/user_migrate/templates/settings.php b/apps/user_migrate/templates/settings.php
old mode 100644
new mode 100755
index 5f4857de5f..8f1fe41df0
--- a/apps/user_migrate/templates/settings.php
+++ b/apps/user_migrate/templates/settings.php
@@ -2,5 +2,5 @@
 	<legend><strong><?php echo $l->t('Export your user account');?></strong></legend>
 	<p><?php echo $l->t('This will create a compressed file that contains your ownCloud account.');?>
 	</p>
-	<button id="exportbtn">Export<img style="display: none;" class="loading" src="<?php echo OC_Helper::linkTo('core', 'img/loading.gif'); ?>" /></button>
+	<button id="exportbtn">Export<img style="display: none;" class="loading" src="<?php echo OCP\Util::linkTo('core', 'img/loading.gif'); ?>" /></button>
 </fieldset>
diff --git a/apps/user_openid/appinfo/app.php b/apps/user_openid/appinfo/app.php
index 3e26d92268..b77067758b 100755
--- a/apps/user_openid/appinfo/app.php
+++ b/apps/user_openid/appinfo/app.php
@@ -14,8 +14,8 @@ if(strpos($_SERVER["REQUEST_URI"],'?') and !strpos($_SERVER["REQUEST_URI"],'='))
 	}
 }
 
-OCP\Util::addHeader('link',array('rel'=>'openid.server', 'href'=>OC_Helper::linkToAbsolute( "user_openid", "user.php" ).'/'.$userName));
-OCP\Util::addHeader('link',array('rel'=>'openid.delegate', 'href'=>OC_Helper::linkToAbsolute( "user_openid", "user.php" ).'/'.$userName));
+OCP\Util::addHeader('link',array('rel'=>'openid.server', 'href'=>OCP\Util::linkToAbsolute( "user_openid", "user.php" ).'/'.$userName));
+OCP\Util::addHeader('link',array('rel'=>'openid.delegate', 'href'=>OCP\Util::linkToAbsolute( "user_openid", "user.php" ).'/'.$userName));
 
 OC_APP::registerPersonal('user_openid','settings');
 
diff --git a/apps/user_openid/templates/settings.php b/apps/user_openid/templates/settings.php
index dd30d82aa9..731a2c57e9 100755
--- a/apps/user_openid/templates/settings.php
+++ b/apps/user_openid/templates/settings.php
@@ -1,7 +1,7 @@
 <form id="openidform">
 	<fieldset class="personalblock">
 		<strong>OpenID</strong>
-		<?php echo ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 'https' : 'http').'://'.OC_Helper::serverHost().OC::$WEBROOT.'/?'; echo OCP\USER::getUser(); ?><br /><em><?php echo $l->t('you can authenticate to other sites with this address');?></em><br />
+		<?php echo ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 'https' : 'http').'://'.OCP\Util::getServerHost().OC::$WEBROOT.'/?'; echo OCP\USER::getUser(); ?><br /><em><?php echo $l->t('you can authenticate to other sites with this address');?></em><br />
 		<label for="identity"><?php echo $l->t('Authorized OpenID provider');?></label>
 		<input type="text" name="identity" id="identity" value="<?php echo $_['identity']; ?>" placeholder="<?php echo $l->t('Your address at Wordpress, Identi.ca, &hellip;');?>" /><span class="msg"></span>
 	</fieldset>
diff --git a/apps/user_openid/user.php b/apps/user_openid/user.php
index cd17dae6d6..22b3a8ba73 100755
--- a/apps/user_openid/user.php
+++ b/apps/user_openid/user.php
@@ -43,7 +43,7 @@ if(!OCP\User::userExists($USERNAME)){
 	OCP\Util::writeLog('user_openid',$USERNAME.' doesn\'t exist',OCP\Util::WARN);
 	$USERNAME='';
 }
-$IDENTITY=OC_Helper::linkToAbsolute( "user_openid", "user.php" ).'/'.$USERNAME;
+$IDENTITY=OCP\Util::linkToAbsolute( "user_openid", "user.php" ).'/'.$USERNAME;
 
 require_once 'phpmyid.php';
 
diff --git a/lib/public/util.php b/lib/public/util.php
index 5cfcbaeeff..b18f0d2311 100644
--- a/lib/public/util.php
+++ b/lib/public/util.php
@@ -122,10 +122,41 @@ class Util {
 
 
 
+	/**
+	 * @brief Creates an absolute url
+	 * @param $app app
+	 * @param $file file
+	 * @returns the url
+	 *
+	 * Returns a absolute url to the given app and file.
+	 */
+	public static function linkToAbsolute( $app, $file ) {
+		return(\OC_Helper::linkToAbsolute( $app, $file ));
+	}
 
 
+        /**
+         * @brief Creates an url
+         * @param $app app
+         * @param $file file
+         * @returns the url
+         *
+         * Returns a url to the given app and file.
+         */
+        public static function linkTo( $app, $file ){
+		return(\OC_Helper::linkTo( $app, $file ));
+	}
 
-
+	/**
+	 * @brief Returns the server host
+	 * @returns the server host
+	 *
+	 * Returns the server host, even if the website uses one or more
+	 * reverse proxies
+	 */
+	public static function getServerHost() {
+		return(\OC_Helper::severHost());
+	}