From 08e5c568d5f36423492c0f0dabfa492af4687d0f Mon Sep 17 00:00:00 2001
From: Ben McClelland <ben.mcclelland@versity.com>
Date: Mon, 11 Mar 2024 21:15:24 -0700
Subject: [PATCH] fix: zero len put error when content length value not defined

Fixes #444. For some clients using chunked uploads with a zero
length file, the content length value from the request headers
was coming back as an empty string. If this happens, just set
it to "0" so that we can successfully parse this to int value.
---
 s3api/controllers/base.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/s3api/controllers/base.go b/s3api/controllers/base.go
index 7332c2c4..e8f8f0d3 100644
--- a/s3api/controllers/base.go
+++ b/s3api/controllers/base.go
@@ -909,6 +909,9 @@ func (c S3ApiController) PutActions(ctx *fiber.Ctx) error {
 
 	// Other headers
 	contentLengthStr := ctx.Get("Content-Length")
+	if contentLengthStr == "" {
+		contentLengthStr = "0"
+	}
 	bucketOwner := ctx.Get("X-Amz-Expected-Bucket-Owner")
 
 	grants := grantFullControl + grantRead + grantReadACP + granWrite + grantWriteACP