passwd.sh

scripts/install.sh

@@ -59,13 +59,7 @@ echo -e "| |  | | \__ \ |_| |_) | (_) | |  | | | |"
 echo -e "|_|  |_|_|___/\__|_.__/ \___/|_|  |_| |_|"
 echo -e ""
 
-# INPUT default admin password
-if [ -z "${MISTBORN_DEFAULT_PASSWORD}" ]; then
-    read -p "(Mistborn) Set default admin password: " -s MISTBORN_DEFAULT_PASSWORD
-    echo
-else
-    echo "MISTBORN_DEFAULT_PASSWORD is already set"
-fi
+source ./scripts/subinstallers/passwd.sh
 
 # Install Cockpit?
 if [ -z "${MISTBORN_INSTALL_COCKPIT}" ]; then

scripts/subinstallers/passwd.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# INPUT default admin password
+while [ -z "${MISTBORN_DEFAULT_PASSWORD}" ]; do
+    echo "(Mistborn) The default admin password may only container alphanumeric characters and _"
+    read -p "(Mistborn) Set default admin password: " -s MISTBORN_DEFAULT_PASSWORD
+    echo
+
+    if [[ $s =~ ^[A-Za-z_]+$ ]]; then
+    # it matches
+        echo "(Mistborn) Password is accepted"
+    else
+        unset MISTBORN_DEFAULT_PASSWORD
+        echo "(Mistborn) Try again"
+    fi
+
+done
+
+echo "MISTBORN_DEFAULT_PASSWORD is set"