From 40afaa71950a8a1ca2c013cebfc3ed84be2972bb Mon Sep 17 00:00:00 2001
From: Lorenz Stechauner <lorenz.stechauner@gmail.com>
Date: Tue, 5 Jun 2018 14:03:09 +0200
Subject: [PATCH] CGI 4096 Bug

---
 src/network/http/HttpConnection.cpp | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/network/http/HttpConnection.cpp b/src/network/http/HttpConnection.cpp
index fbbf47b..a58ac59 100644
--- a/src/network/http/HttpConnection.cpp
+++ b/src/network/http/HttpConnection.cpp
@@ -127,9 +127,7 @@ void HttpConnection::respond(int statuscode, FILE *file, bool compress, long sta
 		char buffer[CHUNK];
 		char buff[64];
 		while (true) {
-			unsigned long size = fread(buffer, 1,
-									   (CHUNK > (shouldTransfer - transfered)) ? (shouldTransfer - transfered) : CHUNK,
-									   file);
+			unsigned long size = fread(buffer, 1, (size_t) ((CHUNK > (shouldTransfer - transfered) && shouldTransfer > 0) ? (shouldTransfer - transfered) : CHUNK), file);
 			transfered += size;
 			sprintf(buff, "%lX\r\n", size);
 			socket->send(buff);