#!/bin/sh

_init ()
{
    # autotool'ize these two?
    TEMPLATE_DIR="/var/lib/freeipmi";
    TEMPLATE="${TEMPLATE_DIR}/bmc-config-template";

    PROG=$(which dialog 2>/dev/null || which whiptail 2>/dev/null);

    BMC_CONFIG=$(which bmc-config 2>/dev/null) || {
	echo "bmc-config not found, fatal!";
	return 1;
    }

    exec 3>&1

    ip="0.0.0.0";
    nm="0.0.0.0";
    gw="0.0.0.0";

    return 0;
}

show_message ()
{
    [ -z "${PROG}" ] && {
	echo "${1}";
	read;
	return;
    }
    ${PROG} --title "BMC Auto Config" --msgbox "${1}" 0 0 >&3;
    
    return;
}

get_input ()
{
    local input;
    [ -z "${PROG}" ] && {
	echo -n "${1}";
	read input;
	echo "${input}";
        return;
    }
    ${PROG} --title "BMC Auto Config" --inputbox "$1" 0 0 "$2" 2>&1 >&3;
}

validate_ip_address ()
{
    local quad;
    local oldIFS;

    quad=${1}
    
    echo "${oct}" | grep -Eq "^[0-9\.]+$" || {
	echo "ERROR: Input cannot have non-numericals";
	return 1;
    }

    oldIFS=${IFS};
    IFS=.
    set -- ${quad};
    IFS=${oldIFS};
    
    if [ "$#" -ne "4" ]; then
	echo "ERROR: IP Address needs 4 octets";
	return 1;
    fi
    
    for oct in $*;  
    do
      if [ "${oct}" -lt "0" -o "${oct}" -gt "255" ]; then
	  echo "ERROR: Input octets should be between 0 - 255";
	  return 1
      fi
    done
    
    return 0
}


get_ip_address ()
{
    get_input "Enter BMC IP Address: " "${ip}";
}


get_netmask ()
{
    get_input "Enter BMC Netmask: " "${nm}";
}


get_gateway_ip_address ()
{
    get_input "Enter BMC Gateway: " "${gw}";
}

accept_input ()
{
    iput_func=$1;
    valid_func=$2;
    local err;
    local input;

    input=$(${iput_func}) || return 1;
    while ! err=$(${valid_func} ${input})
    do
      show_message "${err}";
      input=$(${iput_func}) || return 1;
    done

    echo ${input};

    return 0;
}

main ()
{
    ip=$(accept_input get_ip_address validate_ip_address) &&
    nm=$(accept_input get_netmask validate_ip_address) &&
    gw=$(accept_input get_gateway_ip_address validate_ip_address) && {
	${BMC_CONFIG} --commit -f "${TEMPLATE}";
	${BMC_CONFIG} --commit -k "Lan_Conf:IP_Address=${ip}";
	${BMC_CONFIG} --commit -k "Lan_Conf:Subnet_Mask=${nm}";
	${BMC_CONFIG} --commit -k "Lan_Conf:Default_Gateway_IP_Address=${gw}";
    }
}

_init "$@" && main "$@";