Version 4.3.0

applications/cms/sources/Databases/Dispatcher.php

@@ -197,14 +197,28 @@ class _Dispatcher extends \IPS\Dispatcher
 		{
 			$url .= '/' . $path;
 			$recordClass = '\IPS\cms\Records' . $database->id;
-
+			$isLegacyCategoryUrl = FALSE;
+			
 			if ( $database->use_categories )
 			{
 				$catClass = '\IPS\cms\Categories' . $database->id;
 				$category = $catClass::loadFromPath( $path, $database->id );
+				
+				/* /_/ was used in IP.Board 3.x to denote the articles database */
+				if ( $category === NULL AND mb_substr( $path, 0, 2 ) === '_/' )
+				{
+					$category = $catClass::loadFromPath( mb_substr( $path, 2 ), $database->id );
+					
+					/* We may have a record URL still, so set a flag to handle this later if we never find anything */
+					if ( $category !== NULL )
+					{
+						$isLegacyCategoryUrl = TRUE;
+					}
+				}
 
 				if ( $category === NULL )
 				{
+					
 					/* Is this a record? */
 					$bits = explode( '/', $path );
 					$slug = array_pop( $bits );
@@ -261,6 +275,12 @@ class _Dispatcher extends \IPS\Dispatcher
 					}
 					catch( \OutOfRangeException $ex )
 					{
+						/* We are absolutely certain this is not a record, but we have found a legacy category - redirect */
+						if ( $isLegacyCategoryUrl === TRUE )
+						{
+							\IPS\Output::i()->redirect( $category->url() );
+						}
+						
 						\IPS\Output::i()->error( 'page_doesnt_exist', '2T251/5', 404 );
 					}
 				}