From 315a649777274d5ae1c67f4b49b7dba869a1a8f8 Mon Sep 17 00:00:00 2001
From: orhun <orhun@archlinux.org>
Date: Wed, 28 Jul 2021 00:25:18 +0300
Subject: [PATCH] fix(upload): prevent sending zero bytes

---
 src/server.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/server.rs b/src/server.rs
index a2dceee..b980cb2 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -56,6 +56,10 @@ async fn upload(
                     return Err(error::ErrorPayloadTooLarge("upload limit exceeded"));
                 }
             }
+            if bytes.is_empty() {
+                log::warn!("{} sent zero bytes", host);
+                return Err(error::ErrorBadRequest("invalid file size"));
+            }
             let bytes_unit = Byte::from_bytes(bytes.len() as u128).get_appropriate_unit(false);
             let file_name = &file::save(content.get_file_name()?, &bytes, &config)?;
             log::info!("{} ({}) is uploaded from {}", file_name, bytes_unit, host);