import re
import subprocess
import imp
import os


def doAction(hdf, cbox, store=None, ip1="", ip2="", ip3="", ip4=""):
	__prepareFormData(hdf, cbox)
	if store:
		try:
			for ip_in in (ip1, ip2, ip3, ip4):
				if (int(ip_in) < 0) or (int(ip_in) > 255):
					cbox.log.debug("invalid IP supplied: %s" % str((ip1,ip2,ip3,ip4)))
					raise ValueError
			ip = "%d.%d.%d.%d" % (int(ip1), int(ip2), int(ip3), int(ip4))
		except ValueError:
			hdf["Data.Warning"] = "Plugins.network.InvalidIP"
			return "form_system"
		if __setIP(cbox, ip):
			hdf["Data.Success"] = "Plugins.network.IPChanged"
			hdf["Data.Redirect.URL"] = ""
			hdf["Data.Redirect.Delay"] = 30
			return "form_system"
		else:
			hdf["Data.Warning"] = "Plugins.network.InvalidIP"
			return "form_network"
	else:
		return "form_network"


def getStatus(cbox):
	return "%d.%d.%d.%d" % __getCurrentIP(cbox)


def __prepareFormData(hdf, cbox):
	(oc1, oc2, oc3, oc4) = __getCurrentIP(cbox)
	hdf["Data.Plugins.network.ip.oc1"]	= oc1
	hdf["Data.Plugins.network.ip.oc2"]	= oc2
	hdf["Data.Plugins.network.ip.oc3"]	= oc3
	hdf["Data.Plugins.network.ip.oc4"]	= oc4


def __getCurrentIP(cbox):
	root_action_plug = imp.load_source("root_action", os.path.join(os.path.dirname(__file__), "root_action.py"))
	proc = subprocess.Popen(
		shell = False,
		stdout = subprocess.PIPE,
		args = [
			root_action_plug.IFCONFIG_BIN,
			root_action_plug.IFACE])
	(output, error) = proc.communicate()
	if proc.returncode != 0: return (0,0,0,0)
	match = re.search(u'inet [\w]+:(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\s',output)
	if match:
		return tuple([int(e) for e in match.groups()])
	else:
		return (0,0,0,0)


def __setIP(cbox, ip):
	proc = subprocess.Popen(
		shell = False,
		args = [
			cbox.prefs["Programs"]["super"],
			cbox.prefs["Programs"]["CryptoBoxRootActions"],
			"plugin",
			os.path.join(os.path.dirname(__file__), "root_action.py"),
			ip])
	proc.communicate()
	return proc.returncode == 0