From 6eae35e564fba2183a1d6a2cddaa656d841756f9 Mon Sep 17 00:00:00 2001 From: Michael Boelen Date: Mon, 6 Jul 2020 09:26:27 +0200 Subject: [PATCH] Fix for too short IDs due to hexdump output missing leading or trailing zeroes --- include/helper_generate | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/include/helper_generate b/include/helper_generate index 67b58b66..f3a8d909 100644 --- a/include/helper_generate +++ b/include/helper_generate @@ -51,8 +51,10 @@ if [ $# -gt 0 ]; then ;; *) # xxd does not exist on FreeBSD - HOSTID=$(head -c20 < /dev/urandom | hexdump -ve '"%.2x"') - HOSTID2=$(head -c32 < /dev/urandom | hexdump -ve '"%.2x"') + # Note: hexdump may omit leading or trailing zeroes. + # Take 100 characters as input, turn to hex, then take first 40/64. + HOSTID=$(head -c100 < /dev/urandom | hexdump -ve '"%.2x"' | head -c40) + HOSTID2=$(head -c100 < /dev/urandom | hexdump -ve '"%.2x"' | head -c64) ;; esac