From a0c5de1e32194ed14818c93e183ca6cbb076059a Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Mon, 22 Jul 2019 18:25:08 +0100
Subject: [PATCH] Sanity check contents of updated rpi-update

See: https://github.com/Hexxeh/rpi-update/issues/285
---
 rpi-update | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/rpi-update b/rpi-update
index b449c24..dbe810e 100755
--- a/rpi-update
+++ b/rpi-update
@@ -84,6 +84,12 @@ function update_self() {
 		exit 1
 	fi
 
+	if [[ "$(head -1 ${_tempFileName})" != '#!/bin/bash' ]]; then
+		echo " !!! Failed to download update for rpi-update!"
+		echo " !!! Contents of file is not as expected - github may be down"
+		exit 1
+	fi
+
 	local OCTAL_MODE=$(stat -c '%a' "$0")
 	if ! chmod ${OCTAL_MODE} "${_tempFileName}" ; then
 		echo " !!! Failed: Error while trying to set mode on ${_tempFileName}"