From e2edb4dd56c1f7afdcf313c972c81d958b2b6d52 Mon Sep 17 00:00:00 2001
From: rylon <rylon@web.de>
Date: Mon, 16 Jun 2014 14:55:14 +0200
Subject: [PATCH] files header fix for downloads

---
 files/files.php   | 22 ++++++++++++++++++++--
 system/HEADER.php |  5 ++++-
 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/files/files.php b/files/files.php
index 1690800..2e74fa8 100644
--- a/files/files.php
+++ b/files/files.php
@@ -24,8 +24,13 @@ class files {
         $ext = pathinfo(self::$folders[$cat].$id);
         $ext = strtoupper(array_key_exists('extension', $ext) ? $ext['extension'] : '');
         if(\SYSTEM\HEADER::available($ext)){
-            call_user_func('\SYSTEM\HEADER::'.$ext);}
-        return file_get_contents(self::$folders[$cat].$id);
+            call_user_func('\SYSTEM\HEADER::'.$ext);
+        }else{
+            \SYSTEM\HEADER::FILE($id);}
+            
+        if(!self::file_get_contents_chunked(self::$folders[$cat].$id,4096,function($chunk,&$handle,$iteration){echo $chunk;})){
+            throw new \SYSTEM\LOG\ERROR("Could not transfere File.");}
+        return;
     }
 
     public static function put($cat, $id, $contents) {
@@ -60,4 +65,17 @@ class files {
 
     public static function getURL($cat, $id = null) {
         return \SYSTEM\CONFIG\config::get(\SYSTEM\CONFIG\config_ids::SYS_CONFIG_PATH_BASEURL) . 'api.php?call=files&cat=' . $cat . '&id=' . $id;}
+   
+    private static function file_get_contents_chunked($file,$chunk_size,$callback)
+    {
+        $handle = fopen($file, "r");
+        $i = 0;
+        while (!feof($handle))
+        {
+            call_user_func_array($callback,array(fread($handle,$chunk_size),&$handle,$i));
+            $i++;
+        }
+        fclose($handle);
+        return true;
+    }
 }
\ No newline at end of file
diff --git a/system/HEADER.php b/system/HEADER.php
index 7e13fc7..b21c85f 100644
--- a/system/HEADER.php
+++ b/system/HEADER.php
@@ -2,7 +2,6 @@
 namespace SYSTEM;
 
 class HEADER {
-    
     private static function checkHeader(){
         $file = null;
         $line = null;
@@ -28,6 +27,10 @@ class HEADER {
     public static function GIF(){
         if(self::checkHeader()){
             header('content-type:image/gif;');}}
+            
+    public static function FILE($filename){
+        header("Content-type: application/octet-stream");
+        header("Content-Disposition: attachment; filename=\"".$filename."\"");}
     
     public static function available($datatype){
         $datatype = strtoupper($datatype);