From 2592d744bbf0709510b1aa542b6af9ecb3077af1 Mon Sep 17 00:00:00 2001
From: Thomas Westfeld <westfeld@mac.com2>
Date: Mon, 24 Jan 2022 19:19:59 +0100
Subject: [PATCH] correct hostname regexp fixes issue #24

---
 hetzner-debian10-zfs-setup.sh | 2 +-
 hetzner-debian11-zfs-setup.sh | 2 +-
 hetzner-ubuntu18-zfs-setup.sh | 2 +-
 hetzner-ubuntu20-zfs-setup.sh | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/hetzner-debian10-zfs-setup.sh b/hetzner-debian10-zfs-setup.sh
index 8abeb80..8cd57c7 100644
--- a/hetzner-debian10-zfs-setup.sh
+++ b/hetzner-debian10-zfs-setup.sh
@@ -381,7 +381,7 @@ function ask_hostname {
 
   local hostname_invalid_message=
 
-  while [[ ! $v_hostname =~ ^[a-z][a-zA-Z_:.-]+$ ]]; do
+  while [[ ! $v_hostname =~ ^[a-z][a-zA-Z0-9_:.-]+$ ]]; do
     v_hostname=$(dialog --inputbox "${hostname_invalid_message}Set the host name" 30 100 "$c_default_hostname" 3>&1 1>&2 2>&3)
 
     hostname_invalid_message="Invalid host name! "
diff --git a/hetzner-debian11-zfs-setup.sh b/hetzner-debian11-zfs-setup.sh
index ce4bcea..b6267e0 100644
--- a/hetzner-debian11-zfs-setup.sh
+++ b/hetzner-debian11-zfs-setup.sh
@@ -382,7 +382,7 @@ function ask_hostname {
 
   local hostname_invalid_message=
 
-  while [[ ! $v_hostname =~ ^[a-z][a-zA-Z_:.-]+$ ]]; do
+  while [[ ! $v_hostname =~ ^[a-z][a-zA-Z0-9_:.-]+$ ]]; do
     v_hostname=$(dialog --inputbox "${hostname_invalid_message}Set the host name" 30 100 "$c_default_hostname" 3>&1 1>&2 2>&3)
 
     hostname_invalid_message="Invalid host name! "
diff --git a/hetzner-ubuntu18-zfs-setup.sh b/hetzner-ubuntu18-zfs-setup.sh
index 69d70fa..5ddcf98 100644
--- a/hetzner-ubuntu18-zfs-setup.sh
+++ b/hetzner-ubuntu18-zfs-setup.sh
@@ -346,7 +346,7 @@ function ask_hostname {
 
   local hostname_invalid_message=
 
-  while [[ ! $v_hostname =~ ^[a-z][a-zA-Z_:.-]+$ ]]; do
+  while [[ ! $v_hostname =~ ^[a-z][a-zA-Z0-9_:.-]+$ ]]; do
     v_hostname=$(dialog --inputbox "${hostname_invalid_message}Set the host name" 30 100 "$c_default_hostname" 3>&1 1>&2 2>&3)
 
     hostname_invalid_message="Invalid host name! "
diff --git a/hetzner-ubuntu20-zfs-setup.sh b/hetzner-ubuntu20-zfs-setup.sh
index 89b592f..628937f 100644
--- a/hetzner-ubuntu20-zfs-setup.sh
+++ b/hetzner-ubuntu20-zfs-setup.sh
@@ -346,7 +346,7 @@ function ask_hostname {
 
   local hostname_invalid_message=
 
-  while [[ ! $v_hostname =~ ^[a-z][a-zA-Z_:.-]+$ ]]; do
+  while [[ ! $v_hostname =~ ^[a-z][a-zA-Z0-9_:.-]+$ ]]; do
     v_hostname=$(dialog --inputbox "${hostname_invalid_message}Set the host name" 30 100 "$c_default_hostname" 3>&1 1>&2 2>&3)
 
     hostname_invalid_message="Invalid host name! "