#!/bin/sh 
#
#  This is automatically generated file. DO NOT MODIFY !
#
#  Firewall Builder  fwb_ipt v5.0.2.3596
#
#  Generated Sun Mar 18 21:16:18 2012 PDT by vadim
#
# files: * firewall20-ipv6.fw /etc/fw/firewall20-ipv6.fw
#
# Compiled for iptables (any version)
#
# testing firewall_is_part_of_any_and_networks
# also testing SNAT and DNAT rules when external interface has dynamic address

# dynamic interface ppp0 has an address object attached to it (interface used to be static and had an address, then got converted to dynamic but address object is still there). Compiler should ignore this address object and issue a warning.




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 "$1"
    which "$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\"" 
}

getnet_internal() {
    dev=$1
    name=$2
    af=$3
    L=$($IP route list proto kernel | grep $dev | grep -v default |  sed 's! .*$!!')
    test -z "$L" && { 
        eval "$name=''"
        return
    }
    eval "${name}_list=\"$L\"" 
}


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

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

getnet() {
    getnet_internal $1 $2 "-4"
}

getnet6() {
    getnet_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
  which $PGM >/dev/null 2>&1 || {
    echo "\"$PGM\" not found"
    exit 1
  }
}
check_tools() {
  find_program which
  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() {
    :
    echo "Verifying interfaces: eth0 eth2"
    for i in eth0 eth2 ; do
        $IP link show "$i" > /dev/null 2>&1 || {
            log "Interface $i does not exist"
            exit 1
        }
    done
}

prolog_commands() {
    echo "Running prolog script"
    
}

epilog_commands() {
    echo "Running epilog script"
    
}

run_epilog_and_exit() {
    epilog_commands
    exit $1
}

configure_interfaces() {
    :
    # Configure interfaces
    # See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=429689
    # this ensures that secondary ip address is "promoted" to primary
    # when primary address is deleted, instead of deleting both
    # primary and secondary addresses. It looks like this is only
    # available starting from Linux 2.6.16 
    test -f /proc/sys/net/ipv4/conf/all/promote_secondaries && \
        echo 1 >  /proc/sys/net/ipv4/conf/all/promote_secondaries
    update_addresses_of_interface "eth0 fe80::1/64 192.168.1.1/24" ""
    update_addresses_of_interface "eth2 2001:470:1f05:590::1/64 192.168.2.1/24" ""
}

script_body() {
    echo 30 > /proc/sys/net/ipv4/tcp_fin_timeout 
     echo 1800 > /proc/sys/net/ipv4/tcp_keepalive_intvl 









    # ================ IPv6








    # ================ Table 'filter', rule set Policy
    # 
    # Rule 1 (ppp*)
    # 
    echo "Rule 1 (ppp*)"
    # 
    # ppp clients can not connect to the firewall
    $IP6TABLES -N In_RULE_1
    getinterfaces ppp | while read I; do
        ivar=$(getInterfaceVarName $I)
        getaddr6 $I $ivar
        cmd="$"${ivar}_list
        eval "addr_list=$cmd"
        for addr in $addr_list
        do
            test -n "$addr" && $IP6TABLES -A INPUT -i ppp+   -d $addr   -j In_RULE_1
        done
    done
    $IP6TABLES -A In_RULE_1  -j LOG
    $IP6TABLES -A In_RULE_1  -j DROP
    # 
    # Rule 2 (ppp*)
    # 
    echo "Rule 2 (ppp*)"
    # 
    $IP6TABLES -N In_RULE_2
    $IP6TABLES -A INPUT -i ppp+   -j In_RULE_2
    $IP6TABLES -A In_RULE_2  -j LOG
    $IP6TABLES -A In_RULE_2  -j DROP
    # 
    # Rule 8 (global)
    # 
    echo "Rule 8 (global)"
    # 
    $IP6TABLES -N Cid30296X26784.0
    $IP6TABLES -A OUTPUT -p tcp -m tcp  --dport 22  -m state --state NEW  -j Cid30296X26784.0
    getinterfaces ppp | while read I; do
        ivar=$(getInterfaceVarName $I)
        getaddr6 $I $ivar
        cmd="$"${ivar}_list
        eval "addr_list=$cmd"
        for addr in $addr_list
        do
            test -n "$addr" && $IP6TABLES -A Cid30296X26784.0  -d $addr   -j ACCEPT
        done
    done
    $IP6TABLES -A Cid30296X26784.0  -d 2001:470:1f05:590::1   -j ACCEPT
    $IP6TABLES -A Cid30296X26784.0  -d fe80::1   -j ACCEPT
    $IP6TABLES -A INPUT -p tcp -m tcp  --dport 22  -m state --state NEW  -j ACCEPT
    # 
    # Rule 9 (global)
    # 
    echo "Rule 9 (global)"
    # 
    getinterfaces ppp | while read I; do
        ivar=$(getInterfaceVarName $I)
        getaddr6 $I $ivar
        cmd="$"${ivar}_list
        eval "addr_list=$cmd"
        for addr in $addr_list
        do
            test -n "$addr" && $IP6TABLES -A OUTPUT -p tcp -m tcp  -d $addr   --dport 22  -m state --state NEW  -j ACCEPT
        done
    done
    getinterfaces ppp | while read I; do
        ivar=$(getInterfaceVarName $I)
        getaddr6 $I $ivar
        cmd="$"${ivar}_list
        eval "addr_list=$cmd"
        for addr in $addr_list
        do
            test -n "$addr" && $IP6TABLES -A INPUT -p tcp -m tcp  -d $addr   --dport 22  -m state --state NEW  -j ACCEPT
        done
    done
    # 
    # Rule 18 (global)
    # 
    echo "Rule 18 (global)"
    # 
    $IP6TABLES -N RULE_18
    $IP6TABLES -A OUTPUT  -m rt --rt-type 0  -j RULE_18
    $IP6TABLES -A INPUT  -m rt --rt-type 0  -j RULE_18
    $IP6TABLES -A FORWARD  -m rt --rt-type 0  -j RULE_18
    $IP6TABLES -A RULE_18  -j LOG
    $IP6TABLES -A RULE_18  -j DROP
    # 
    # Rule 19 (global)
    # 
    echo "Rule 19 (global)"
    # 
    # Automatically generated 'catch all' rule
    $IP6TABLES -N RULE_19
    $IP6TABLES -A OUTPUT  -j RULE_19
    $IP6TABLES -A INPUT  -j RULE_19
    $IP6TABLES -A FORWARD  -j RULE_19
    $IP6TABLES -A RULE_19  -j LOG
    $IP6TABLES -A RULE_19  -j DROP
}

ip_forward() {
    :
    
}

reset_all() {
    :
    reset_iptables_v6
}

block_action() {
    reset_all
}

stop_action() {
    reset_all
    $IP6TABLES -P OUTPUT  ACCEPT
    $IP6TABLES -P INPUT   ACCEPT
    $IP6TABLES -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 Sun Mar 18 21:16:18 2012 by vadim"
        check_tools
         prolog_commands 
        check_run_time_address_table_files
        
        load_modules "nat ipv6"
        configure_interfaces
        verify_interfaces
        
         reset_all 
        
        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