P2P: Add D-Bus python script to perform Disconnect

D-Bus script using python glib is added to perform Disconnect on an
interface.

Signed-hostap: Michael Naumov <michael.naumov@intel.com>
Signed-hostap: Nirav Shah <nirav.j2.shah@intel.com>

wpa_supplicant/examples/p2p/p2p_disconnect.py

@@ -0,0 +1,169 @@
+#!/usr/bin/python
+# Tests P2P_Disconnect
+# Will perform disconnect on interface_name
+######### MAY NEED TO RUN AS SUDO #############
+
+import dbus
+import sys, os
+import time
+import gobject
+import threading
+import getopt
+from dbus.mainloop.glib import DBusGMainLoop
+
+def usage():
+	print "Usage:"
+	print "  %s -i <interface_name> \ " \
+		% sys.argv[0]
+	print "  		[-w <wpas_dbus_interface>]"
+	print "Options:"
+	print "  -i = interface name"
+	print "  -w = wpas dbus interface = fi.w1.wpa_supplicant1"
+	print "Example:"
+	print "  %s -i p2p-wlan0-0" % sys.argv[0]
+
+# Required Signals
+def GroupFinished(status, etc):
+	print "Disconnected"	
+	os._exit(0)
+
+class P2P_Disconnect (threading.Thread):
+	# Needed Variables
+	global bus
+	global wpas_object
+	global interface_object
+	global p2p_interface
+	global interface_name
+	global wpas
+	global wpas_dbus_interface
+	global path
+	global timeout
+
+	# Dbus Paths
+	global wpas_dbus_opath
+	global wpas_dbus_interfaces_opath
+	global wpas_dbus_interfaces_interface
+	global wpas_dbus_interfaces_p2pdevice
+
+	# Constructor
+	def __init__(self,interface_name,wpas_dbus_interface,timeout):
+		# Initializes variables and threads
+		self.interface_name = interface_name
+		self.wpas_dbus_interface = wpas_dbus_interface
+		self.timeout = timeout
+
+		# Initializes thread and daemon allows for ctrl-c kill
+		threading.Thread.__init__(self)
+		self.daemon = True
+
+		# Generating interface/object paths
+		self.wpas_dbus_opath = "/" + \
+				self.wpas_dbus_interface.replace(".","/")
+		self.wpas_wpas_dbus_interfaces_opath = self.wpas_dbus_opath + \
+				"/Interfaces"
+		self.wpas_dbus_interfaces_interface = \
+				self.wpas_dbus_interface + ".Interface"
+		self.wpas_dbus_interfaces_p2pdevice = \
+				self.wpas_dbus_interfaces_interface \
+				+ ".P2PDevice"
+
+		# Getting interfaces and objects
+		DBusGMainLoop(set_as_default=True)
+		self.bus = dbus.SystemBus()
+		self.wpas_object = self.bus.get_object(
+				self.wpas_dbus_interface,
+				self.wpas_dbus_opath)
+		self.wpas = dbus.Interface(self.wpas_object,
+				self.wpas_dbus_interface)
+
+		# Try to see if supplicant knows about interface
+		# If not, throw an exception
+		try:
+			self.path = self.wpas.GetInterface(
+					self.interface_name)
+		except dbus.DBusException, exc:
+			error = 'Error:\n  Interface ' + self.interface_name \
+				+ ' was not found'
+			print error
+			usage()
+			os._exit(0)
+
+		self.interface_object = self.bus.get_object(
+				self.wpas_dbus_interface, self.path)
+		self.p2p_interface = dbus.Interface(self.interface_object,
+				self.wpas_dbus_interfaces_p2pdevice)
+
+		# Signals
+		self.bus.add_signal_receiver(GroupFinished,
+			dbus_interface=self.wpas_dbus_interfaces_p2pdevice,
+			signal_name="GroupFinished")
+
+	# Runs p2p_disconnect
+	def run(self):
+		# Allows other threads to keep working while MainLoop runs
+		# Required for timeout implementation
+		gobject.MainLoop().get_context().iteration(True)
+		gobject.threads_init()
+		self.p2p_interface.Disconnect()
+		gobject.MainLoop().run()
+
+
+if __name__ == "__main__":
+
+	timeout = 5
+	# Defaults for optional inputs
+	wpas_dbus_interface = 'fi.w1.wpa_supplicant1'
+
+	# interface_name is required
+	interface_name = None
+
+	# Using getopts to handle options
+	try:
+		options, args = getopt.getopt(sys.argv[1:],"hi:w:")
+
+	except getopt.GetoptError:
+		usage()
+		quit()
+
+	# If theres a switch, override default option
+	for key, value in options:
+		# Help
+		if (key == "-h"):
+			usage()
+			quit()
+		# Interface Name
+		elif (key == "-i"):
+			interface_name = value
+		# Dbus interface
+		elif (key == "-w"):
+			wpas_dbus_interface = value
+		else:
+			assert False, "unhandled option"
+
+	# Interface name is required and was not given
+	if (interface_name == None):
+		print "Error:\n  interface_name is required"
+		usage()
+		quit()
+
+	# Constructor
+	try:
+		p2p_disconnect_test = P2P_Disconnect(interface_name,
+						wpas_dbus_interface,timeout)
+
+	except:
+		print "Error:\n  Invalid wpas_dbus_interface"
+		usage()
+		quit()
+
+	# Start P2P_Disconnect
+	p2p_disconnect_test.start()
+
+	try:
+		time.sleep(int(p2p_disconnect_test.timeout))
+
+	except:
+		pass
+
+	print "Disconnect timed out"
+	quit()