#!/usr/bin/python

from socket import *
import sys, getopt
import time

dhcp_f = dhcp_f = gw_f = mask_f = serial_f = 0
get_settings_f = 0
req_ser = 0

GET_TIMEOUT = 5
find_tmout = 5

broadcast_port = 49049
broadcast_addr = '255.255.255.255'


def usage():
	print "Usage\r\n\
	--help \t\t\tprint usage info\r\n\
	--timeout \t\tset scan timeout, sec\r\n\
	--find \t\t\tdiscover devices in the network\r\n\
	--req=<seral> \t\trequest settings from device\r\n\
	--serial=<serial> \tserial number of the device to apply settings to\r\n\
	--dhcp=<True|False> \tset dhcp option\r\n\
	--ip=<addr> \t\tset ip addr\r\n\
	--gw=<addr> \t\tset gatewauy addr\r\n\
	--mask=<addr> \t\tset netmask addr\r\n\
	--broadcast=<addr> \tbroadcast addr to use"

def exit(found):
        if (found == 0):
            print "Not found"
        else:
            print "Found: ", found
        sys.exit(0)



def find(tmout):
	cs=socket(AF_INET, SOCK_DGRAM)
	cs.settimeout(tmout)
	cs.bind(('',broadcast_port))

	found = 0
	ser_list = []
	mac_list = []

        print '%-*s%-*s%-*s%-*s%-*s' % (20, "Model", 15, "Serial", 15, "IP-address", 20, "MAC-address", 20, "FW version")

        timestamp = time.time()        

	while (time.time() - timestamp < tmout):
		try:
			m=cs.recvfrom(broadcast_port)
		except timeout:
                        exit(found)
                 
		message = m[0]

		s=message.split(";")
	
		if len(s) > 1:
			model = s[0]
			serial = s[1]
			ip = m[1][0]
			mac = s[2]
			fw = s[3]

 			if serial not in ser_list:
 				ser_list.append(serial)
 				mac_list.append(mac)
 			elif mac not in mac_list:
			 	mac_list.append(mac)
			 	serial += " (dub)"
			else:
			 	break
			print '%-*s%-*s%-*s%-*s%-*s' % (20, model.decode('utf-8'), 15, serial, 15, ip, 20, mac, 20, fw)
			found+=1

        exit(found)


def get_settings(serial):
	print "\r\nBroadcast request to: ", broadcast_addr

	timeout = 0
	found = 0

	cs=socket(AF_INET, SOCK_DGRAM)
	cs.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
	cs.setsockopt(SOL_SOCKET, SO_BROADCAST, 1)
	cs.settimeout(GET_TIMEOUT)

        cs.bind(('', broadcast_port))

	buf = '{"serno":"' + serial + '","dhcp":"","ipaddress":"","gateway":"","mask":""}'

	cs.sendto(buf, (broadcast_addr, broadcast_port))

	while (timeout < GET_TIMEOUT):
 		m=cs.recvfrom(broadcast_port)
		
		if m[0] == buf: 
			continue		
		message = m[0]

		message = message.replace("{", "")
		message = message.replace("}", "")

		tags = message.split(",")
		if not tags[0]:
			continue

		values = tags[0].split(":")
		if not values[0]:
			continue
		
		if values[0] == '"serno"':
			resp_serial = values.pop().replace('"', '')

			if resp_serial == serial:
				resp_dhcp = tags[1].split(":").pop().replace('"', '')
				resp_ip = tags[2].split(":").pop().replace('"', '')
				resp_gw = tags[3].split(":").pop().replace('"', '')
				resp_netmask = tags[4].split(":").pop().replace('"', '')

				print "\r\nSeral number: \t", resp_serial 
				print "DHCP: \t\t", resp_dhcp
				print "IP: \t\t", resp_ip 
				print "Geteway: \t", resp_gw 
				print "Netmask: \t", resp_netmask

				print "\r\nCommand to set settings: \r\n" + sys.argv[0] \
					+ " --serial=" + resp_serial \
					+ " --dhcp=" + resp_dhcp \
					+ " --ip=" + resp_ip \
					+ " --gw=" + resp_gw \
					+ " --mask=" + resp_netmask \
					+ " --broadcast=255.255.255.255"

				found = 1
				break

		timeout = timeout + 1;
	
	if not found:
		print "Not found"
	

def set_settings():
	print "\r\nBroadcast request to: ", broadcast_addr

	print "\r\nSeral number: \t", serial_set 
	print "DHCP: \t\t", dhcp_set 
	print "IP: \t\t", ip_set 
	print "Geteway: \t", gw_set 
	print "Netmask: \t", mask_set 
	
	cs=socket(AF_INET, SOCK_DGRAM)
	cs.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
	cs.setsockopt(SOL_SOCKET, SO_BROADCAST, 1)

	buf = '{"serno":"' + serial_set + '","dhcp":"' + dhcp_set + '","ipaddress":"' \
		+ ip_set + '","gateway":"' + gw_set + '","mask":"' + mask_set + '"}'

	

	cs.sendto(buf, (broadcast_addr, broadcast_port))

	print "\r\nCommand to request settings: \r\n" + sys.argv[0] \
		+ " --req=" + serial_set \
		+ " --broadcast=255.255.255.255"


find_tmout = 5

try:                                	
        opts, args = getopt.getopt(sys.argv[1:], "hb:ft:r:s:d:i:g:m:", \
                ["help", "broadcast=", "find", "timeout=", "req=", "serial=", "dhcp=", "ip=", "gw=", "mask="])
except getopt.GetoptError:          
        usage()                         
        sys.exit(2)     
               
for opt, arg in opts:                
        if opt in ("-h", "--help"):      
                usage()                     
                sys.exit()
        if opt in ("-b", "--broadcast"): 
                broadcast_addr = arg
        if opt in ("-t", "--timeout"):
                if (arg.isdigit()):
                    find_tmout = int(arg)
        if opt in ("-f", "--find"):      
                find(find_tmout)                     
        elif opt in ("-r", "--req"): 
                get_settings_f = 1 
                req_ser = arg 
        elif opt in ("-s", "--serial"):                               
                serial_set = arg
                serial_f = 1           
        elif opt in ("-d", "--dhcp"):                               
                dhcp_set = arg
                dhcp_f = 1                  
        elif opt in ("-i", "--ip"): 
                ip_set = arg
                ip_f = 1  
        elif opt in ("-g", "--gw"): 
                gw_set = arg
                gw_f = 1  
        elif opt in ("-m", "--mask"):
                mask_set = arg
                mask_f = 1 

if get_settings_f == 1:
        get_settings(req_ser)                     
        sys.exit()
elif (dhcp_f and dhcp_f and gw_f and mask_f and serial_f):
        set_settings()
        sys.exit()
else:
        print "Error: Not enough parameters"
        usage()
        sys.exit(2)