prim

#!/bin/sh
# This is a standard inet initialisation
# it supposed to to be sourced by inet0 .. inet9 script
# and also inetboot
# 
# GNU GPL  (c) Eko M. Budi, 2004
#          (c) Vector Linux, 2004
#

###########################################################
## The sourcer must set these settings
#DEVICE=eth0
#DHCP="yes"
#IPADDR="192.168.1.1"
#NETMASK="255.255.255.0"
#GATEWAY="192.168.1.1"
#PROBE="yes"

###########################################################
## The script

PATH="/sbin:/usr/sbin:/bin:/usr/bin"

start()
{
if [ "$DHCP" = "yes" ]; then
   ## DYNAMIC IP
   echo "Starting network ${DEVICE} using a DHCP server..."
   ## increase DELAY if using wireless
   if [ -x /etc/rc.d/rc.wireless ]; then
      DELAY=20
   else
      DELAY=10
   fi
   ## use HOSTNAME if available
   NETNAME=`cat /etc/HOSTNAME 2>/dev/null`
   if [ "$NETNAME" ]; then
     dhcpcd -t $DELAY -h ${NETNAME} -d $DEVICE
   else
     dhcpcd -t $DELAY -d $DEVICE
   fi
   if [ $? != 0 ]; then
      echo "FAILED"
      return 1
   fi
   # show the status
   ifconfig $DEVICE
   return $?
else
   ## STATIC
   # Test IPADDR, if invalid, skip
   IPMASK=`ipmask $NETMASK $IPADDR`
   if [ ! $? = 0 ]; then
     echo "Invalid IP/NETMASK = $IPADDR/$NETMASK"
     return 1
   fi     
   BROADCAST=`echo $IPMASK | cut -d " " -f 1`
   NETWORK=`echo $IPMASK | cut -d " " -f 2`
 
   # Going up ..
   echo "Starting network ${DEVICE} as ${IPADDR}/${NETMASK}..."
   ifconfig ${DEVICE} ${IPADDR} broadcast ${BROADCAST} netmask ${NETMASK}
   if [ $? != 0 ]; then
      return 1
   fi
   
   # if PROBE is defined, try the gateway 3 times
   if [ "$GATEWAY" ]; then
     if [ "$PROBE" = "yes" ]; then
        echo "Probing the gateway $GATEWAY "
        for ii in 1 2 3; do
          sleep 1
          ping -c 1 -w $ii $GATEWAY > /dev/null
    	  if [ $? = 0 ]; then
            break;
          fi
          if [ $ii = 3 ]; then
            echo " FAILED !!!"
	    echo Canceling network $DEVICE ...
	    ifconfig $DEVICE down
	    return 1	
	  fi
        done
     fi

     # set the default gateway if it is not defined yet
     route | grep -e "^default" &> /dev/null
     if [ $? != 0 ]; then
       echo "Setting up gateway $GATEWAY ..."
       route add default gw ${GATEWAY} netmask 0.0.0.0 $DEVICE
     fi
  fi
  return 0
fi

}

stop() {
   # stop the default gateway if it is ours
   current_gw=`route -n | grep -e "^0.0.0.0" | cut -f 2 -d ' '`
   if [ "$current_gw" = "$GATEWAY" ]; then
      echo "Deleting gateway $GATEWAY..."
      route del default
   fi
   # stop the interface
   echo "Stopping network $DEVICE ..."
   if [ "$DHCP" = "yes" ]; then
     dhcpcd -k $DEVICE
   else
     ifconfig $DEVICE down 
   fi
}

status() {
   ifconfig $DEVICE
}

case $1 in
start)
   start
   ;;
stop)
   stop
   ;;
restart)
   $0 stop
   sleep 1
   $0 start
   ;;
reload)
   ;;
status)
   status 
   ;;
*)
   echo "Usage: $0 {start|stop|restart|reload|status}"
esac