#! /bin/sh
#----------------------------------------------------------------------------
# /var/install/bin/lprng-edit - edit /etc/config.d/lprng
#
# Copyright (c) 2002-2020 Thomas Bork, tom(at)eisfair(dot)net
#
# Creation   : 2002-10-06 tb
# Last Update: 2020-03-23 tb
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------
. /var/install/include/eislib

configfile='/etc/config.d/lprng'
base=''
parport_found=''
modprobebin='/sbin/modprobe'
rmmodbin='/sbin/rmmod'
lsmodbin='/sbin/lsmod'

do_modules_load ()
{
  for modul in parport parport_pc lp
  do
      if [ -z "`$lsmodbin | grep "^$modul "`" ]
      then
          $modprobebin $modul >/dev/null 2>&1
      fi
  done
}

do_modules_del ()
{
  for modul in lp parport_pc parport
  do
      if [ -n "`$lsmodbin | grep "^$modul "`" ]
      then
          $rmmodbin $modul >/dev/null 2>&1
      fi
  done
}

clrhome
mecho --info "Edit LPRng configuration"
echo
mecho --warn "While configuring printing will be not available."
echo

if /var/install/bin/ask "Continue anyway" "y"
then
    do_modules_del
    do_modules_load

    if [ -d /proc/sys/dev/parport ]
    then
        for i in $(ls -1 /proc/sys/dev/parport | grep -v default)
        do
            base=$(cat /proc/sys/dev/parport/$i/base-addr | cut -f1)
            base=`echo "obase=16; $base" | bc`
        done

        if [ -n "$base" ]
        then
            echo
            mecho --info "Found parallel port(s), please write down adress(es):"
            echo

            for i in $(ls -1 /proc/sys/dev/parport | grep -v default)
            do
                base=$(cat /proc/sys/dev/parport/$i/base-addr | cut -f1)
                base=`echo "obase=16; $base" | bc`
                mecho --info "                        0x$base"
            done
        else
            parport_found="false"
        fi
    else
        parport_found="false"
    fi

    if [ "$parport_found" = "false" ]
    then
        echo
        mecho --warn "No parallel port(s) found."
    fi

    echo
    anykey
    do_modules_del

    clrhome
    if /var/install/bin/edit $configfile
    then
        echo
        if /var/install/bin/ask "Activate Lprng configuration now" "y"
        then
            /usr/sbin/service stop lprng

            if [ -d /var/spool/lpd ]
            then
                echo "Removing /var/spool/lpd ..."
                rm -r -f /var/spool/lpd
            fi

            sh /var/install/config.d/lprng.sh
            /usr/sbin/service start lprng
        fi
    fi

    echo
    mecho --info "If your configuration changed and you want to print over Samba,"
    mecho --info "you have to create a new Samba Configuration now."
    echo
    anykey
else
    echo
    echo "Nothing changed."
    echo
    anykey
fi