From 132d23c96452ca1eb1471b4bb0abbe0bcc862b8b Mon Sep 17 00:00:00 2001
From: Oliver Gugger <gugger@gmail.com>
Date: Fri, 12 Feb 2021 10:41:27 +0100
Subject: [PATCH] scripts: verify hash length

To make sure we've actually calculated the hash correctly, we make sure
it's 64 characters long.
---
 scripts/verify-install.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/scripts/verify-install.sh b/scripts/verify-install.sh
index 30248cb0..cf5f9ad3 100755
--- a/scripts/verify-install.sh
+++ b/scripts/verify-install.sh
@@ -81,6 +81,16 @@ if [[ ! "$LND_VERSION" =~ $version_regex ]]; then
   exit 1
 fi
 
+# Make sure the hash was actually calculated by looking at its length.
+if [[ ${#LND_SUM} -ne 64 ]]; then
+  echo "ERROR: Invalid hash for lnd: $LND_SUM!"
+  exit 1
+fi
+if [[ ${#LNCLI_SUM} -ne 64 ]]; then
+  echo "ERROR: Invalid hash for lncli: $LNCLI_SUM!"
+  exit 1
+fi
+
 # If we're inside the docker image, there should be a shasums.txt file in the
 # root directory. If that's the case, we first want to make sure we still have
 # the same hash as we did when building the image.