# This is not a shell script; it provides functions to network scripts
# that source it.

source_config ()
{
    DEVNAME=`basename $CONFIG | sed 's/^ifcfg-//g'`

    if basename $CONFIG | grep '[^g]-' >/dev/null 2>&1 ; then
	PARENTCONFIG=`echo $CONFIG | sed 's/-[^-]*$//g'`
	PARENTDEVNAME=`basename $PARENTCONFIG | sed 's/^ifcfg-//g'`
	[ -f $PARENTCONFIG ] || {
	    echo "Missing config file $PARENTCONFIG." >&2
	    exit 1
	}
	. $PARENTCONFIG
    fi
    . $CONFIG
}

toggle_value()
{
	if [ -z "$2" ]
	then
		echo ''
	elif [ "$2" = "yes"  -o "$2" = "YES" ] ; then
		echo "$1"
	elif [ "$2" = "no"  -o "$2" = "NO" ] ; then
		echo "-$1"
	else
		echo ''
	fi
}
 
do_netreport ()
{
  # Notify programs that have requested notification
  ( cd /var/run/netreport || exit
    for i in * ; do
      [ -f $i ] && \
        kill -SIGIO $i >/dev/null 2>&1 || \
          rm -f $i >/dev/null 2>&1
    done
  )
}

need_hostname()
{
    if [ "`hostname`" = "(none)" -o "`hostname`" = "localhost" -o \
	 "`hostname`" = "localhost.localdomain" ]; then
	NEEDHOSTNAME=yes
    else
	unset NEEDHOSTNAME
    fi
}

set_hostname()
{
    hostname $1
    if ! grep search /etc/resolv.conf >/dev/null 2>&1; then
	domain=`echo $1 | sed 's/^[^\.]*\.//'`
	echo "search $domain" >> /etc/resolv.conf
    fi
}

check_device_down ()
{
    if echo ${DEVICE} | grep -q ':' ; then
     if LANG=C ifconfig -a 2>/dev/null | grep -q ${DEVICE} ; then
	  retcode=1
     else
	  retcode=0
     fi
    else 
     if LANG=C ifconfig ${DEVICE} 2>/dev/null | grep " UP " >/dev/null 2>&1 ; then
	retcode=1
     else
	retcode=0
     fi
    fi
    return $retcode
}

check_default_route ()
{
    return `/sbin/route -n|gawk 'BEGIN{r=1} $3=="0.0.0.0" && $4=="UG" {r=0} END{print r}'`
}

find_gateway_dev ()
{
    . /etc/sysconfig/network
    if [ "${GATEWAY}" != "" -a "${GATEWAY}" != "none" ] ; then
        export GATEWAY
        networks=`/sbin/route -n|awk '{print $1, ENVIRON["GATEWAY"],$3,$8}'|awk '{system("ipcalc --silent --network "$2" "$3" 2>/dev/null")}'|sed s^NETWORK=^^g`
        for net in $networks; do
            dev=`/sbin/route -n|grep ^$net|awk '{print $NF}'`
            if [ "$dev" != "" ] ; then
                GATEWAYDEV=$dev
            fi
        done
    fi
}

add_default_route ()
{
    . /etc/sysconfig/network
    find_gateway_dev
    if [ "${GATEWAY}" != "" -a "${GATEWAY}" != "none" -a "${GATEWAYDEV}" != "" ] ; then
        if ! check_device_down ; then
            if [ "$GATEWAY" = "0.0.0.0" ]; then
                /sbin/route add default ${GATEWAYDEV}
            else
                /sbin/route add default gw ${GATEWAY} ${GATEWAYDEV}
            fi
        fi
    fi
}