#!/bin/sh
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2007-2022  IPFire Team  <info@ipfire.org>                     #
# Copyright (C) 2024  BPFire <vincent.mc.li@gmail.com>                     #
#                                                                             #
# This program is free software: you can redistribute it and/or modify        #
# it under the terms of the GNU General Public License as published by        #
# the Free Software Foundation, either version 3 of the License, or           #
# (at your option) any later version.                                         #
#                                                                             #
# This program is distributed in the hope that it will be useful,             #
# but WITHOUT ANY WARRANTY; without even the implied warranty of              #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
# GNU General Public License for more details.                                #
#                                                                             #
# You should have received a copy of the GNU General Public License           #
# along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
#                                                                             #
###############################################################################

. /etc/sysconfig/rc
. $rc_functions

eval $(/usr/local/bin/readhash /var/ipfire/firewall/locationblock)

locationsetting="/var/ipfire/firewall/locationblock"

load_geoipblock () {
    /usr/sbin/xdp-loader status red0 | grep -w 'xdp_geoip'
    if [ $? -ne 0 ]; then
        xdp-loader load red0 -P 80 -p /sys/fs/bpf/xdp-geoip -n xdp_geoip /usr/lib/bpf/xdp_geoip.bpf.o
        if [ $? -ge 1 ]; then
            boot_mesg "Native mode not supported, try SKB"
            xdp-loader load red0 -m skb -P 80 -p /sys/fs/bpf/xdp-geoip -n xdp_geoip /usr/lib/bpf/xdp_geoip.bpf.o
        fi

        # allow WUI nobody with permission to update map
        chown -R nobody /sys/fs/bpf/xdp-geoip

        # Loop through the /var/ipfire/firewall/locationblock file directly
        while IFS='=' read -r country status; do

            if [ "$country" = "LOCATIONBLOCK_ENABLED" ]; then
                continue
            fi

            if [ "$status" = "on" ]; then
                # Construct the file path for the IP set
                file="/var/lib/location/ipset/${country}v4.ipset"
                # Add the country code to geoip_map using the constructed file path
		boot_mesg "add $country location block"
                xdp_geoip add $file $country >> /dev/null
            fi
        done < $locationsetting
    fi
}

unload_geoipblock () {
        /usr/sbin/xdp-loader status red0 | grep -w 'xdp_geoip'
        if [ $? -eq 0 ]; then
                prog_id=$(xdp-loader status red0 | grep 'xdp_geoip' | awk '{print $4}')
                /usr/sbin/xdp-loader unload -i $prog_id red0
        else
                boot_mesg "Error xdp_geoip not loaded!"
        fi
}

is_xdpgeoip_attached () {
        /usr/sbin/xdp-loader status red0 | grep -w 'xdp_geoip' >> /dev/null
        if [ $? -eq 0 ]; then
		echo "xdp_geoip is attached to red0"
        else
		echo "xdp_geoip is not attached to red0"
        fi
}


case "$1" in
	start)
		boot_mesg -n "Starting xdp-geoip..."
		if [ "$LOCATIONBLOCK_ENABLED" == "on" ]; then
			load_geoipblock
		fi
		;;

	stop)
		boot_mesg "Stopping xdp-geoip..."
		if [ "$LOCATIONBLOCK_ENABLED" == "off" ]; then
			unload_geoipblock
		fi
		;;

	status)
		is_xdpgeoip_attached
		;;

	restart)
		$0 stop
		sleep 1
		$0 start
		;;

	*)
		echo "Usage: $0 {start|stop|restart}"
		exit 1
		;;
esac