From 69cfcc1d308f3923e99cbe4ef7dc536f1d5943ed Mon Sep 17 00:00:00 2001
From: Yaw Anokwa <yanokwa@gmail.com>
Date: Mon, 18 Sep 2023 16:36:27 -0700
Subject: [PATCH] Add robustness, by only branching if file is empty

---
 entrypoint.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/entrypoint.sh b/entrypoint.sh
index 9b11b8e..3f8bca3 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -43,7 +43,7 @@ if [ "${SMTPPORTOUT}" ]; then
 	mv /etc/exim4/exim4.conf.temp /etc/exim4/exim4.conf.template
 fi
 
-if [ "$KEY_PATH" ] && [ "$CERTIFICATE_PATH" ]; then
+if [ -s "$KEY_PATH" ] && [ -s "$CERTIFICATE_PATH" ]; then
 	echo "MAIN_TLS_ENABLE = yes" >> /etc/exim4/exim4.conf.localmacros
 	cp "$KEY_PATH" /etc/exim4/exim.key
 	cp "$CERTIFICATE_PATH" /etc/exim4/exim.crt
@@ -58,7 +58,7 @@ else
 	} >> /etc/exim4/exim4.conf.localmacros
 fi
 
-if [ "$DKIM_KEY_PATH" ]; then
+if [ -s "$DKIM_KEY_PATH" ]; then
 	cp "$DKIM_KEY_PATH" /etc/exim4/dkim.key
 	chown Debian-exim /etc/exim4/dkim.key
 	chmod 640 /etc/exim4/dkim.key