From ebaf7815472bb00164439a016ecdf75ea1aed176 Mon Sep 17 00:00:00 2001
From: TheSpad <git@spad.co.uk>
Date: Sun, 5 Feb 2023 17:36:01 +0000
Subject: [PATCH] Sanity-check tarball before trying to extract

---
 docker-mods.v3 | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docker-mods.v3 b/docker-mods.v3
index b9e67a2..101676c 100755
--- a/docker-mods.v3
+++ b/docker-mods.v3
@@ -222,6 +222,10 @@ run_mods() {
                 "${BLOB_URL}${SHALAYER}" -o \
                 /modtarball.tar.xz
             mkdir -p /tmp/mod
+            if ! tar -tzf /modtarball.tar.xz >/dev/null 2>&1; then
+                echo "Invalid tarball, could not download ${DOCKER_MOD}"
+                continue
+            fi
             tar xzf /modtarball.tar.xz -C /tmp/mod
             if [[ -d /tmp/mod/etc/s6-overlay ]]; then
                 if [[ -d /tmp/mod/etc/cont-init.d ]]; then