#!/usr/bin/python

import sys
import dbus

if (len(sys.argv) >= 3 and len(sys.argv) != 4 and sys.argv[1] == "wifi"):
	print "Usage: %s wifi [SSID] [passphrase]" % (sys.argv[0])
	sys.exit(1)
elif (len(sys.argv) < 2):
	print "Usage: %s type" % (sys.argv[0])
	sys.exit(1)

bus = dbus.SystemBus()

manager = dbus.Interface(bus.get_object('net.connman', "/"),
					'net.connman.Manager')

def technology_enable_tethering(path, tech_type, ssid, psk):
	tech = dbus.Interface(bus.get_object("net.connman", path),
						"net.connman.Technology")

	properties = tech.GetProperties()

	for key in properties.keys():
		if key in ["Type"]:
			if properties[key] == tech_type:
				if len(ssid) > 0:
					tech.SetProperty("TetheringIdentifier",
								ssid)
				if len(psk) > 0:
					tech.SetProperty("TetheringPassphrase",
								psk)
				print "Enabling %s tethering" % tech_type
				tech.SetProperty("Tethering", dbus.Boolean(1))

				return tech_type
			else:
				return None

technologies = manager.GetTechnologies()
tech = None

for path,_ in technologies:
	if (len(sys.argv) == 4):
		tech = technology_enable_tethering(path,
					sys.argv[1], sys.argv[2], sys.argv[3])
	else:
		tech = technology_enable_tethering(path, sys.argv[1], "", "")

	if tech != None:
		break;

if tech == None:
	print "Failed to enable %s tethering" % (sys.argv[1])