#!/bin/sh 
#
#  This is automatically generated file. DO NOT MODIFY !
#
#  Firewall Builder  fwb_ipt v4.3.0.3542
#
#  Generated Fri May 13 16:10:36 2011 PDT by vadim
#
# files: * firewall2-4.fw /etc/fw/firewall2-4.fw
#
# Compiled for iptables (any version)
#
# tests for error conditions in NATCompiler_ipt::VerifyRules

# firewall2-4:NAT:0: error: Can not use negation in translated source 
# firewall2-4:NAT:1: error: Can not use negation in translated destination.
# firewall2-4:NAT:2: error: Can not use negation in translated service.
# firewall2-4:NAT:3: error: Translated service should be 'Original' or should contain single object.
# firewall2-4:NAT:4: error: Translated service should be 'Original' or should contain single object.
# firewall2-4:NAT:5: error: Non-contiguous address range in Translated Destination in load balancing NAT rule
# firewall2-4:NAT:7: error: Action 'Branch' needs NAT rule set to point to
# firewall2-4:NAT:9: error: Can not use unnumbered interface in Translated Source of a Source translation rule.
# firewall2-4:NAT:10: error: Original and translated source should both be networks of the same size.
# firewall2-4:NAT:12: error: Can not use service object in Translated Service if Original Service is 'Any'.
# firewall2-4:NAT:13: error: NAT rule can not change service types: UDPService to TCPService
# firewall2-4:NAT:13: error: Translated Service should be either 'Original' or should contain object of the same type as Original Service.
# firewall2-4:NAT:14: error: NAT rule can not change service types: UDPService to TCPService
# firewall2-4:NAT:14: error: Translated Service should be either 'Original' or should contain object of the same type as Original Service.
# firewall2-4:NAT:14: error: Translated Service should be either 'Original' or should contain object of the same type as Original Service.


FWBDEBUG=""

PATH="/sbin:/usr/sbin:/bin:/usr/bin:${PATH}"
export PATH



LSMOD="/sbin/lsmod"
MODPROBE="/sbin/modprobe"
IPTABLES="/sbin/iptables"
IP6TABLES="/sbin/ip6tables"
IPTABLES_RESTORE="/sbin/iptables-restore"
IP6TABLES_RESTORE="/sbin/ip6tables-restore"
IP="/sbin/ip"
IFCONFIG="/sbin/ifconfig"
VCONFIG="/sbin/vconfig"
BRCTL="/sbin/brctl"
IFENSLAVE="/sbin/ifenslave"
IPSET="/usr/sbin/ipset"
LOGGER="/usr/bin/logger"

log() {
    echo "$1"
    command -v "$LOGGER" >/dev/null 2>&1 && $LOGGER -p info "$1"
}

getInterfaceVarName() {
    echo $1 | sed 's/\./_/'
}

getaddr_internal() {
    dev=$1
    name=$2
    af=$3
    L=$($IP $af addr show dev $dev |  sed -n '/inet/{s!.*inet6* !!;s!/.*!!p}' | sed 's/peer.*//')
    test -z "$L" && { 
        eval "$name=''"
        return
    }
    eval "${name}_list=\"$L\"" 
}

getaddr() {
    getaddr_internal $1 $2 "-4"
}

getaddr6() {
    getaddr_internal $1 $2 "-6"
}

# function getinterfaces is used to process wildcard interfaces
getinterfaces() {
    NAME=$1
    $IP link show | grep ": $NAME" | while read L; do
        OIFS=$IFS
        IFS=" :"
        set $L
        IFS=$OIFS
        echo $2
    done
}

diff_intf() {
    func=$1
    list1=$2
    list2=$3
    cmd=$4
    for intf in $list1
    do
        echo $list2 | grep -q $intf || {
        # $vlan is absent in list 2
            $func $intf $cmd
        }
    done
}

find_program() {
  PGM=$1
  command -v $PGM >/dev/null 2>&1 || {
    echo "$PGM not found"
    exit 1
  }
}
check_tools() {
  find_program $IPTABLES 
  find_program $IP 
}
reset_iptables_v4() {
  $IPTABLES -P OUTPUT  DROP
  $IPTABLES -P INPUT   DROP
  $IPTABLES -P FORWARD DROP

cat /proc/net/ip_tables_names | while read table; do
  $IPTABLES -t $table -L -n | while read c chain rest; do
      if test "X$c" = "XChain" ; then
        $IPTABLES -t $table -F $chain
      fi
  done
  $IPTABLES -t $table -X
done
}

reset_iptables_v6() {
  $IP6TABLES -P OUTPUT  DROP
  $IP6TABLES -P INPUT   DROP
  $IP6TABLES -P FORWARD DROP

cat /proc/net/ip6_tables_names | while read table; do
  $IP6TABLES -t $table -L -n | while read c chain rest; do
      if test "X$c" = "XChain" ; then
        $IP6TABLES -t $table -F $chain
      fi
  done
  $IP6TABLES -t $table -X
done
}


P2P_INTERFACE_WARNING=""

missing_address() {
    address=$1
    cmd=$2

    oldIFS=$IFS
    IFS="@"
    set $address
    addr=$1
    interface=$2
    IFS=$oldIFS



    $IP addr show dev $interface | grep -q POINTOPOINT && {
        test -z "$P2P_INTERFACE_WARNING" && echo "Warning: Can not update address of interface $interface. fwbuilder can not manage addresses of point-to-point interfaces yet"
        P2P_INTERFACE_WARNING="yes"
        return
    }

    test "$cmd" = "add" && {
      echo "# Adding ip address: $interface $addr"
      echo $addr | grep -q ':' && {
          $FWBDEBUG $IP addr $cmd $addr dev $interface
      } || {
          $FWBDEBUG $IP addr $cmd $addr broadcast + dev $interface
      }
    }

    test "$cmd" = "del" && {
      echo "# Removing ip address: $interface $addr"
      $FWBDEBUG $IP addr $cmd $addr dev $interface || exit 1
    }

    $FWBDEBUG $IP link set $interface up
}

list_addresses_by_scope() {
    interface=$1
    scope=$2
    ignore_list=$3
    $IP addr ls dev $interface | \
      awk -v IGNORED="$ignore_list" -v SCOPE="$scope" \
        'BEGIN {
           split(IGNORED,ignored_arr);
           for (a in ignored_arr) {ignored_dict[ignored_arr[a]]=1;}
         }
         (/inet |inet6 / && $0 ~ SCOPE && !($2 in ignored_dict)) {print $2;}' | \
        while read addr; do
          echo "${addr}@$interface"
	done | sort
}


update_addresses_of_interface() {
    ignore_list=$2
    set $1 
    interface=$1 
    shift

    FWB_ADDRS=$(
      for addr in $*; do
        echo "${addr}@$interface"
      done | sort
    )

    CURRENT_ADDRS_ALL_SCOPES=""
    CURRENT_ADDRS_GLOBAL_SCOPE=""

    $IP link show dev $interface >/dev/null 2>&1 && {
      CURRENT_ADDRS_ALL_SCOPES=$(list_addresses_by_scope $interface 'scope .*' "$ignore_list")
      CURRENT_ADDRS_GLOBAL_SCOPE=$(list_addresses_by_scope $interface 'scope global' "$ignore_list")
    } || {
      echo "# Interface $interface does not exist"
      # Stop the script if we are not in test mode
      test -z "$FWBDEBUG" && exit 1
    }

    diff_intf missing_address "$FWB_ADDRS" "$CURRENT_ADDRS_ALL_SCOPES" add
    diff_intf missing_address "$CURRENT_ADDRS_GLOBAL_SCOPE" "$FWB_ADDRS" del
}

clear_addresses_except_known_interfaces() {
    $IP link show | sed 's/://g' | awk -v IGNORED="$*" \
        'BEGIN {
           split(IGNORED,ignored_arr);
           for (a in ignored_arr) {ignored_dict[ignored_arr[a]]=1;}
         }
         (/state/ && !($2 in ignored_dict)) {print $2;}' | \
         while read intf; do
            echo "# Removing addresses not configured in fwbuilder from interface $intf"
            $FWBDEBUG $IP addr flush dev $intf scope global
            $FWBDEBUG $IP link set $intf down
         done
}

check_file() {
    test -r "$2" || {
        echo "Can not find file $2 referenced by address table object $1"
        exit 1
    }
}

check_run_time_address_table_files() {
    :
    
}

load_modules() {
    :
    
}

verify_interfaces() {
    :
    
}

prolog_commands() {
    echo "Running prolog script"
    
}

epilog_commands() {
    echo "Running epilog script"
    
}

run_epilog_and_exit() {
    epilog_commands
    exit $1
}

configure_interfaces() {
    :
    # Configure interfaces
    update_addresses_of_interface "eth0 192.168.1.1/24 192.168.1.10/24 192.168.1.20/24" ""
    update_addresses_of_interface "eth1 22.22.22.22/24 22.22.22.0/32 22.22.22.1/32 22.22.22.2/32 22.22.22.3/32 22.22.22.4/32 22.22.22.5/32 22.22.22.6/32 22.22.22.7/32 22.22.22.8/32 22.22.22.9/32 22.22.22.10/32 22.22.22.11/32 22.22.22.12/32 22.22.22.13/32 22.22.22.14/32 22.22.22.15/32 22.22.22.16/32 22.22.22.17/32 22.22.22.18/32 22.22.22.19/32 22.22.22.20/32 22.22.22.21/32 22.22.22.22/32 22.22.22.23/32 22.22.22.24/32 22.22.22.25/32 22.22.22.26/32 22.22.22.27/32 22.22.22.28/32 22.22.22.29/32 22.22.22.30/32 22.22.22.31/32 22.22.22.32/32 22.22.22.33/32 22.22.22.34/32 22.22.22.35/32 22.22.22.36/32 22.22.22.37/32 22.22.22.38/32 22.22.22.39/32 22.22.22.40/32 22.22.22.41/32 22.22.22.42/32 22.22.22.43/32 22.22.22.44/32 22.22.22.45/32 22.22.22.46/32 22.22.22.47/32 22.22.22.48/32 22.22.22.49/32 22.22.22.50/32 22.22.22.51/32 22.22.22.52/32 22.22.22.53/32 22.22.22.54/32 22.22.22.55/32 22.22.22.56/32 22.22.22.57/32 22.22.22.58/32 22.22.22.59/32 22.22.22.60/32 22.22.22.61/32 22.22.22.62/32 22.22.22.63/32 22.22.22.64/32 22.22.22.65/32 22.22.22.66/32 22.22.22.67/32 22.22.22.68/32 22.22.22.69/32 22.22.22.70/32 22.22.22.71/32 22.22.22.72/32 22.22.22.73/32 22.22.22.74/32 22.22.22.75/32 22.22.22.76/32 22.22.22.77/32 22.22.22.78/32 22.22.22.79/32 22.22.22.80/32 22.22.22.81/32 22.22.22.82/32 22.22.22.83/32 22.22.22.84/32 22.22.22.85/32 22.22.22.86/32 22.22.22.87/32 22.22.22.88/32 22.22.22.89/32 22.22.22.90/32 22.22.22.91/32 22.22.22.92/32 22.22.22.93/32 22.22.22.94/32 22.22.22.95/32 22.22.22.96/32 22.22.22.97/32 22.22.22.98/32 22.22.22.99/32 22.22.22.100/32 22.22.22.101/32 22.22.22.102/32 22.22.22.103/32 22.22.22.104/32 22.22.22.105/32 22.22.22.106/32 22.22.22.107/32 22.22.22.108/32 22.22.22.109/32 22.22.22.110/32 22.22.22.111/32 22.22.22.112/32 22.22.22.113/32 22.22.22.114/32 22.22.22.115/32 22.22.22.116/32 22.22.22.117/32 22.22.22.118/32 22.22.22.119/32 22.22.22.120/32 22.22.22.121/32 22.22.22.122/32 22.22.22.123/32 22.22.22.124/32 22.22.22.125/32 22.22.22.126/32 22.22.22.127/32 22.22.22.128/32 22.22.22.129/32 22.22.22.130/32 22.22.22.131/32 22.22.22.132/32 22.22.22.133/32 22.22.22.134/32 22.22.22.135/32 22.22.22.136/32 22.22.22.137/32 22.22.22.138/32 22.22.22.139/32 22.22.22.140/32 22.22.22.141/32 22.22.22.142/32 22.22.22.143/32 22.22.22.144/32 22.22.22.145/32 22.22.22.146/32 22.22.22.147/32 22.22.22.148/32 22.22.22.149/32 22.22.22.150/32 22.22.22.151/32 22.22.22.152/32 22.22.22.153/32 22.22.22.154/32 22.22.22.155/32 22.22.22.156/32 22.22.22.157/32 22.22.22.158/32 22.22.22.159/32 22.22.22.160/32 22.22.22.161/32 22.22.22.162/32 22.22.22.163/32 22.22.22.164/32 22.22.22.165/32 22.22.22.166/32 22.22.22.167/32 22.22.22.168/32 22.22.22.169/32 22.22.22.170/32 22.22.22.171/32 22.22.22.172/32 22.22.22.173/32 22.22.22.174/32 22.22.22.175/32 22.22.22.176/32 22.22.22.177/32 22.22.22.178/32 22.22.22.179/32 22.22.22.180/32 22.22.22.181/32 22.22.22.182/32 22.22.22.183/32 22.22.22.184/32 22.22.22.185/32 22.22.22.186/32 22.22.22.187/32 22.22.22.188/32 22.22.22.189/32 22.22.22.190/32 22.22.22.191/32 22.22.22.192/32 22.22.22.193/32 22.22.22.194/32 22.22.22.195/32 22.22.22.196/32 22.22.22.197/32 22.22.22.198/32 22.22.22.199/32 22.22.22.200/32 22.22.22.201/32 22.22.22.202/32 22.22.22.203/32 22.22.22.204/32 22.22.22.205/32 22.22.22.206/32 22.22.22.207/32 22.22.22.208/32 22.22.22.209/32 22.22.22.210/32 22.22.22.211/32 22.22.22.212/32 22.22.22.213/32 22.22.22.214/32 22.22.22.215/32 22.22.22.216/32 22.22.22.217/32 22.22.22.218/32 22.22.22.219/32 22.22.22.220/32 22.22.22.221/32 22.22.22.222/32 22.22.22.223/32 22.22.22.224/32 22.22.22.225/32 22.22.22.226/32 22.22.22.227/32 22.22.22.228/32 22.22.22.229/32 22.22.22.230/32 22.22.22.231/32 22.22.22.232/32 22.22.22.233/32 22.22.22.234/32 22.22.22.235/32 22.22.22.236/32 22.22.22.237/32 22.22.22.238/32 22.22.22.239/32 22.22.22.240/32 22.22.22.241/32 22.22.22.242/32 22.22.22.243/32 22.22.22.244/32 22.22.22.245/32 22.22.22.246/32 22.22.22.247/32 22.22.22.248/32 22.22.22.249/32 22.22.22.250/32 22.22.22.251/32 22.22.22.252/32 22.22.22.253/32 22.22.22.254/32" ""
    update_addresses_of_interface "eth2 192.168.2.1/24 192.168.2.40/24" ""
    update_addresses_of_interface "lo 127.0.0.1/8" ""
}

script_body() {
    echo 1 > /proc/sys/net/ipv4/conf/all/rp_filter 
     echo 0 > /proc/sys/net/ipv4/conf/all/accept_source_route 
     echo 0 > /proc/sys/net/ipv4/conf/all/accept_redirects 
     echo 1 > /proc/sys/net/ipv4/conf/all/log_martians 
     echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all 
     echo 1 > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses 
     echo 30 > /proc/sys/net/ipv4/tcp_fin_timeout 
     echo 1800 > /proc/sys/net/ipv4/tcp_keepalive_intvl 


    # ================ IPv4


    # ================ Table 'filter', automatic rules
    $IPTABLES -A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu

    # accept established sessions
    $IPTABLES -A INPUT   -m state --state ESTABLISHED,RELATED -j ACCEPT 
    $IPTABLES -A OUTPUT  -m state --state ESTABLISHED,RELATED -j ACCEPT 
    $IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT 
    # drop TCP sessions opened prior firewall restart
    $IPTABLES -A INPUT   -p tcp -m tcp ! --tcp-flags SYN,RST,ACK SYN -m state --state NEW -j DROP 
    $IPTABLES -A OUTPUT  -p tcp -m tcp ! --tcp-flags SYN,RST,ACK SYN -m state --state NEW -j DROP 
    $IPTABLES -A FORWARD -p tcp -m tcp ! --tcp-flags SYN,RST,ACK SYN -m state --state NEW -j DROP 
    # drop packets that do not match any valid state and log them
    $IPTABLES -N drop_invalid
    $IPTABLES -A OUTPUT   -m state --state INVALID  -j drop_invalid 
    $IPTABLES -A INPUT    -m state --state INVALID  -j drop_invalid 
    $IPTABLES -A FORWARD  -m state --state INVALID  -j drop_invalid 
    $IPTABLES -A drop_invalid -j ULOG --ulog-nlgroup 1  --ulog-qthreshold 1 --ulog-prefix "INVALID state -- DENY "
    $IPTABLES -A drop_invalid -j DROP


    # ================ Table 'nat',  rule set NAT
    # 
    # Rule 5 (NAT)
    # 
    echo "Rule 5 (NAT)"
    # 
    # firewall2-4:NAT:5: error: Non-contiguous address range in Translated Destination in load balancing NAT rule

    $IPTABLES -t nat -A PREROUTING -p tcp -m tcp   -d 22.22.22.22  --dport 80 -j DNAT --to-destination 192.168.1.10-192.168.1.20
    $IPTABLES -t nat -A OUTPUT -p tcp -m tcp   -d 22.22.22.22  --dport 80 -j DNAT --to-destination 192.168.1.10-192.168.1.20
    # 
    # Rule 6 (NAT)
    # 
    echo "Rule 6 (NAT)"
    # 
    $IPTABLES -t nat -A POSTROUTING -o eth+  -s 192.168.1.0/24  -j SNAT --to-source 192.168.1.10
    $IPTABLES -t nat -A POSTROUTING -o eth+  -s 192.168.1.0/24  -j SNAT --to-source 192.168.1.20
    # 
    # Rule 8 (NAT)
    # 
    echo "Rule 8 (NAT)"
    # 
    $IPTABLES -t nat -A POSTROUTING -p tcp -m tcp  -s 192.168.1.0/24   --dport 80 -j NETMAP --to 22.22.22.0/24
    # 
    # Rule 11 (NAT)
    # 
    echo "Rule 11 (NAT)"
    # 
    $IPTABLES -t nat -A POSTROUTING -o eth2  -s 192.168.1.0/24  -d 192.168.2.0/24  -j SNAT --to-source 192.168.2.1



    # ================ Table 'filter', rule set Policy
    # 
    # Rule 0 (global)
    # 
    echo "Rule 0 (global)"
    # 
    # 'catch all' rule
    $IPTABLES -N RULE_0
    $IPTABLES -A OUTPUT  -j RULE_0
    $IPTABLES -A INPUT  -j RULE_0
    $IPTABLES -A FORWARD  -j RULE_0
    $IPTABLES -A RULE_0  -m limit --limit 5/second -j ULOG  --ulog-nlgroup 1 --ulog-prefix "RULE 0 - DENY **" --ulog-qthreshold 1
    $IPTABLES -A RULE_0  -j DROP
}

ip_forward() {
    :
    echo 1 > /proc/sys/net/ipv4/ip_forward
}

reset_all() {
    :
    reset_iptables_v4
}

block_action() {
    reset_all
}

stop_action() {
    reset_all
    $IPTABLES -P OUTPUT  ACCEPT
    $IPTABLES -P INPUT   ACCEPT
    $IPTABLES -P FORWARD ACCEPT
}

check_iptables() {
    IP_TABLES="$1"
    [ ! -e $IP_TABLES ] && return 151
    NF_TABLES=$(cat $IP_TABLES 2>/dev/null)
    [ -z "$NF_TABLES" ] && return 152
    return 0
}
status_action() {
    check_iptables "/proc/net/ip_tables_names"
    ret_ipv4=$?
    check_iptables "/proc/net/ip6_tables_names"
    ret_ipv6=$?
    [ $ret_ipv4 -eq 0 -o $ret_ipv6 -eq 0 ] && return 0
    [ $ret_ipv4 -eq 151 -o $ret_ipv6 -eq 151 ] && {
        echo "iptables modules are not loaded"
    }
    [ $ret_ipv4 -eq 152 -o $ret_ipv6 -eq 152 ] && {
        echo "Firewall is not configured"
    }
    exit 3
}

# See how we were called.
# For backwards compatibility missing argument is equivalent to 'start'

cmd=$1
test -z "$cmd" && {
    cmd="start"
}

case "$cmd" in
    start)
        log "Activating firewall script generated Fri May 13 16:10:36 2011 by vadim"
        check_tools
        
        check_run_time_address_table_files
        
        load_modules "nat "
        configure_interfaces
        verify_interfaces
        
         reset_all 
         prolog_commands 
        script_body
        ip_forward
        epilog_commands
        RETVAL=$?
        ;;

    stop)
        stop_action
        RETVAL=$?
        ;;

    status)
        status_action
        RETVAL=$?
        ;;

    block)
        block_action
        RETVAL=$?
        ;;

    reload)
        $0 stop
        $0 start
        RETVAL=$?
        ;;

    interfaces)
        configure_interfaces
        RETVAL=$?
        ;;

    test_interfaces)
        FWBDEBUG="echo"
        configure_interfaces
        RETVAL=$?
        ;;



    *)
        echo "Usage $0 [start|stop|status|block|reload|interfaces|test_interfaces]"
        ;;

esac

exit $RETVAL