also fix RPC password

home.admin/20initDialog.sh

@@ -58,32 +58,43 @@ Write them down & store them in a safe place.
       passwordValid=0
     fi
 
-  done
-
-# change user passwords and then change hostname
-echo "pi:$result" | sudo chpasswd
-echo "root:$result" | sudo chpasswd
-echo "bitcoin:$result" | sudo chpasswd
-echo "admin:$result" | sudo chpasswd
-sleep 1
-
-# sucess info dialog
-dialog --backtitle "RaspiBlitz" --msgbox "OK - password changed to '$result'\nfor all users pi, admin, root & bitcoin" 6 52
-
-# repeat until user input is nit length 0
-result=""
-while [ ${#result} -lt 8 ]
-  do
+    # change user passwords and then change hostname
+    echo "pi:$result" | sudo chpasswd
+    echo "root:$result" | sudo chpasswd
+    echo "bitcoin:$result" | sudo chpasswd
+    echo "admin:$result" | sudo chpasswd
+    sleep 1
+
+    # sucess info dialog
+    dialog --backtitle "RaspiBlitz" --msgbox "OK - password changed to '$result'\nfor all users pi, admin, root & bitcoin" 6 52
+
+    # repeat until user input is nit length 0
+    result=""
     dialog --backtitle "RaspiBlitz - Setup"\
-       --inputbox "Enter your RPC Password B (min 8 chars):" 9 52 2>$_temp
+    --inputbox "Enter your RPC Password B:" 9 52 2>$_temp
     result=$( cat $_temp )
     shred $_temp
+
+    clearedResult=$(echo "${result}" | tr -dc '[:alnum:]-.' | tr -d ' ')
+    if [ ${#clearedResult} != ${#result} ] || [ ${#clearedResult} -eq 0]; then
+      clear
+      echo "FAIL - Password contained not allowed chars (see next screen)"
+      echo "Press ENTER to continue to start again"
+      read key
+      passwordValid=0
+    else
+    
+      # set Blockchain RPC Password (for admin cli & template for user bitcoin)
+      sed -i "s/^rpcpassword=.*/rpcpassword=${result}/g" /home/admin/assets/${network}.conf
+      sed -i "s/^${network}d.rpcpass=.*/${network}d.rpcpass=${result}/g" /home/admin/assets/lnd.${network}.conf
+
+      # success info dialog
+      dialog --backtitle "RaspiBlitz - SetUP" --msgbox "OK - RPC password changed to '$result'\n\nNow starting the Setup of your RaspiBlitz." 7 52
+      clear
+  
+    fi
+
   done
 
-# set Blockchain RPC Password (for admin cli & template for user bitcoin)
-sed -i "s/^rpcpassword=.*/rpcpassword=${result}/g" /home/admin/assets/${network}.conf
-sed -i "s/^${network}d.rpcpass=.*/${network}d.rpcpass=${result}/g" /home/admin/assets/lnd.${network}.conf
 
-# success info dialog
-dialog --backtitle "RaspiBlitz - SetUP" --msgbox "OK - RPC password changed to '$result'\n\nNow starting the Setup of your RaspiBlitz." 7 52
-clear
+