import socket
import struct
import textwrap

def main():
	conn = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.ntohs(3))

	while True:
		raw_data, addr = conn.recvfrom(65535)
		dest_mac, src_mac, eth_proto, data = ethernet_frame(raw_data)
		print("\nEthernet Frame:")
		print("Destination: {}, Source: {}, Protocol: {}".format(dest_mac, src_mac, eth_proto))

def get_mac_addr(bytes_addr):
	bytes_str = map("{:0.2x}".format, bytes_addr)
	return ":".join(bytes_str).upper()

def ethernet_frame(data):
	dest_mac, src_mac, proto = struct.unpack("! 6s 6s H", data[:14])
	return get_mac_addr(dest_mac), get_mac_addr(src_mac), socket.htons(proto), data[14:]

if __name__ == "__main__":
	main()