Add a config option to not use URL rewriting by default

Also fix a bug preventing download

config_default.php

@@ -80,4 +80,12 @@
      * The other only appear in book detail
      */
     $config['cops_prefered_format'] = array ("EPUB", "PDF", "MOBI", "CBR", "CBZ");
+    
+    /*
+     * use URL rewriting for downloading of ebook in HTML catalog
+     * See README for more information
+     *  1 : enable
+     *  0 : disable
+     */
+    $config['cops_use_url_rewriting'] = "0";
 ?>

data.php

@@ -70,8 +70,17 @@ class Data extends Base {
     }
     
     public function getHtmlLink () {
+        global $config;
+        
+        if ($config['cops_use_url_rewriting'] == "1")
+        {
             return "download/" . $this->id . "/" . urlencode ($this->getFilename ());
         }
+        else
+        {
+            return str_replace ("&", "&", "fetch.php?id=" . $this->book->id . "&data=" . $this->id . "&type=" . $this->extension);
+        }
+    }
     
     public static function getLink ($book, $type, $mime, $rel, $filename, $idData, $title = NULL)
     {

fetch.php

@@ -8,6 +8,7 @@
     
     require_once ("config.php");
     require_once ("book.php");
+    require_once ("data.php");
      
     global $config;
     $expires = 60*60*24*14;
@@ -82,7 +83,7 @@
             }
             break;
         default:
-            header("Content-type: " . Book::$mimetypes[$type]);
+            header("Content-type: " . Data::$mimetypes[$type]);
             break;
     }
     $file = $book->getFilePath ($type, $idData, true);