From 16f1d09722de11837ae06250a53d19813d6f2fda Mon Sep 17 00:00:00 2001
From: Matthew Saunders Brown <matthewsaundersbrown@gmail.com>
Date: Mon, 30 Dec 2024 10:50:42 -0800
Subject: [PATCH] fix domain regex, domains can start with numbers

---
 bin/letsencrypt-add.sh      | 2 +-
 bin/letsencrypt-certonly.sh | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/bin/letsencrypt-add.sh b/bin/letsencrypt-add.sh
index dd66f71..85056da 100755
--- a/bin/letsencrypt-add.sh
+++ b/bin/letsencrypt-add.sh
@@ -32,7 +32,7 @@ while getopts "hd:" opt; do
     d ) # domain name (hostname) to create cert for
       domain=${OPTARG,,}
       # basic but good enough domain name regex validation
-      if [[ ! $domain =~ ^(([a-zA-Z](-?[a-zA-Z0-9])*)\.)+[a-zA-Z]{2,}$ ]] ; then
+      if [[ ! $domain =~ ^(([a-zA-Z0-9](-?[a-zA-Z0-9])*)\.)+[a-zA-Z]{2,}$ ]] ; then
         echo "ERROR: Invalid domain name: $1"
         exit 1
       fi
diff --git a/bin/letsencrypt-certonly.sh b/bin/letsencrypt-certonly.sh
index dffc9cf..168cae6 100755
--- a/bin/letsencrypt-certonly.sh
+++ b/bin/letsencrypt-certonly.sh
@@ -34,7 +34,7 @@ while getopts "hd:tn" opt; do
     d ) # domain name (hostname) to create cert for
       domain=${OPTARG,,}
       # basic but good enough domain name regex validation
-      if [[ ! $domain =~ ^(([a-zA-Z](-?[a-zA-Z0-9])*)\.)+[a-zA-Z]{2,}$ ]] ; then
+      if [[ ! $domain =~ ^(([a-zA-Z0-9](-?[a-zA-Z0-9])*)\.)+[a-zA-Z]{2,}$ ]] ; then
         echo "ERROR: Invalid domain name: $1"
         exit 1
       fi