#!/usr/bin/env bash
# Copyright 2012 Citrix Systems, Inc. Licensed under the
# Apache License, Version 2.0 (the "License"); you may not use this
# file except in compliance with the License.  Citrix Systems, Inc.
# reserves all rights not expressly granted by the License.
# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# 
# Automatically generated by addcopyright.py at 04/03/2012



 

# netusage.sh -- create iptable rules to gather network stats, running within DomR

source /root/func.sh

lock="biglock"
locked=$(getLockFile $lock)
if [ "$locked" != "1" ]
then
    exit 1
fi

usage() {
  printf "Usage: %s -[c|g|r] [-[a|d] <public interface>]\n" $(basename $0)  >&2
}

create_usage_rules () {
  iptables-save|grep "INPUT -j NETWORK_STATS" > /dev/null
  if [ $? -eq 0 ]
  then
      return $?
  fi
  iptables -N NETWORK_STATS > /dev/null
  iptables -I FORWARD -j NETWORK_STATS > /dev/null
  iptables -I INPUT -j NETWORK_STATS > /dev/null
  iptables -I OUTPUT -j NETWORK_STATS > /dev/null
  iptables -A NETWORK_STATS -i eth0 -o eth2 > /dev/null
  iptables -A NETWORK_STATS -i eth2 -o eth0 > /dev/null
  iptables -A NETWORK_STATS -o eth2 ! -i eth0 -p tcp > /dev/null
  iptables -A NETWORK_STATS -i eth2 ! -o eth0 -p tcp > /dev/null
  return $?
}

add_public_interface () {
  local pubIf=$1
  iptables-save|grep "NETWORK_STATS -i eth0 -o $pubIf" > /dev/null
  if [ $? -eq 0 ]
  then
      return $?
  fi
  iptables -A NETWORK_STATS -i eth0 -o $pubIf > /dev/null
  iptables -A NETWORK_STATS -i $pubIf -o eth0 > /dev/null
  iptables -A NETWORK_STATS -o $pubIf ! -i eth0 -p tcp > /dev/null
  iptables -A NETWORK_STATS -i $pubIf ! -o eth0 -p tcp > /dev/null
  return $?
}

delete_public_interface () {
  local pubIf=$1
  echo $pubIf >> /root/removedVifs
  return $?
}

get_usage () {
  iptables -L NETWORK_STATS -n -v -x | awk '$1 ~ /^[0-9]+$/ { printf "%s:", $2}'; > /dev/null
  if [ -f /root/removedVifs ] ; then iptables -Z NETWORK_STATS ; fi; > /dev/null
  /root/clearUsageRules.sh > /dev/null
  if [ $? -gt 0  -a $? -ne 2 ]
  then
     printf $?
     return 1
  fi
}

reset_usage () {
  iptables -Z NETWORK_STATS > /dev/null
  if [ $? -gt 0  -a $? -ne 2 ]
  then
     return 1
  fi
}

#set -x

cflag=
gflag=
rflag=
iflag=
aflag=
dflag=

while getopts 'cgria:d:' OPTION
do
  case $OPTION in
  c)	cflag=1
		;;
  g)	gflag=1
		;;
  r)	rflag=1
		;;
  a)    aflag=1
        publicIf="$OPTARG"
        ;;
  d)    dflag=1
        publicIf="$OPTARG"
        ;;
  i)    #Do nothing, since it's parameter for host script
        ;;
  ?)	usage
                unlock_exit 2 $lock $locked
		;;
  esac
done

if [ "$cflag" == "1" ] 
then
  create_usage_rules  
  unlock_exit $? $lock $locked
fi

if [ "$gflag" == "1" ] 
then
  get_usage 
  unlock_exit $? $lock $locked
fi

if [ "$rflag" == "1" ] 
then
  reset_usage  
  unlock_exit $? $lock $locked
fi

if [ "$aflag" == "1" ] 
then
  add_public_interface $publicIf 
  unlock_exit $? $lock $locked
fi

if [ "$dflag" == "1" ] 
then
  delete_public_interface $publicIf 
  unlock_exit $? $lock $locked
fi

unlock_exit 0 $lock $locked