Force Mibew to work without mod_rewrite

src/mibew/.htaccess

@@ -1,6 +1,3 @@
-# Set default handler for incoming requests
-DirectoryIndex index.php
-
 # Disable directory listing
 Options -Indexes
 
@@ -26,6 +23,9 @@ Options +FollowSymLinks
 
 # Redirect requests to the front controller
 <IfModule mod_rewrite.c>
+    # Use the front controller as a default handler
+    DirectoryIndex index.php
+
     RewriteEngine On
 
     # Use separate front controller for the system installator
@@ -40,6 +40,13 @@ Options +FollowSymLinks
     RewriteRule ^(.*)$ index.php [QSA,L]
 </IfModule>
 
+<IfModule !mod_rewrite.c>
+    # There is no mod_rewrite in the system. For the root Mibew directory
+    # index_fallback.php should be loaded first to activate old-fashioned URLs.
+    # For all other directories index.php is just a directory index file.
+    DirectoryIndex index_fallback.php index.php
+</IfModule>
+
 # Deny access to internal system files
 <FilesMatch "\.(yml|po|ini|handlebars|keep)$">
     Deny from all

src/mibew/index_fallback.php

@@ -0,0 +1,23 @@
+<?php
+/*
+ * This file is a part of Mibew Messenger.
+ *
+ * Copyright 2005-2014 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Force the user to specify the entry point. This should be done only when
+// mod_rewrite is not used by apache.
+header('HTTP/1.0 301 Moved Permanently');
+header('Location: index.php/');