#!/usr/bin/env python3
import socket
import time
import fcntl
import struct


def get_ip_address(ifname):
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    return socket.inet_ntoa(fcntl.ioctl(s.fileno(), 0x8915, struct.pack('256s', ifname[:15].encode()))[20:24])


def get_uptime():
    with open('/proc/uptime', 'r') as f:
        uptime_seconds = float(f.readline().split()[0])

    return uptime_seconds


def main():
    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_BINDTODEVICE, b"eth0")

    print("Beaconing...")  # or something, idk i don't do english
    while True:

        ipaddr = ""
        try:
            ipaddr = get_ip_address("eth0")
        except:
            pass

        message = b"BIRBOX|" + ipaddr.encode() + b"|" + str(int(get_uptime())).encode()

        sock.sendto(message, ('<broadcast>', 6969))
        time.sleep(10)


if __name__ == "__main__":
    print("Starting beacon...")
    try:
        main()
    except KeyboardInterrupt:
        pass

    print("Beacon stopped.")