P2P: Add D-Bus python script to perform p2p_invite

D-Bus script using python glib is added to perform p2p_invite on a group
interface to invite a peer.

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

wpa_supplicant/examples/p2p/p2p_invite.py

@@ -0,0 +1,201 @@
+#!/usr/bin/python
+# Tests p2p_invite
+######### MAY NEED TO RUN AS SUDO #############
+
+import dbus
+import sys, os
+import time
+import gobject
+import getopt
+import threading
+from dbus.mainloop.glib import DBusGMainLoop
+
+def usage():
+	print "Usage:"
+	print "  %s -i <interface_name> -a <addr> \ " \
+		% sys.argv[0]
+	print "		[-o <persistent_group_object>] [-w <wpas_dbus_interface>]"
+	print "Options:"
+	print "  -i = interface name"
+	print "  -a = address of peer"
+	print "  -o = persistent group object path"
+	print "  -w = wpas dbus interface = fi.w1.wpa_supplicant1"
+	print "Example:"
+	print "  %s -i p2p-wlan0-0 -a 00150083523c" % sys.argv[0]
+
+# Required Signals
+def InvitationResult(invite_result):
+	print "Inviation Result signal :"
+	status = invite_result['status']
+	print "status = ", status
+	if invite_result.has_key('BSSID'):
+		bssid = invite_result['BSSID']
+		print "BSSID = ", hex(bssid[0]) , ":" , \
+		 hex(bssid[1]) , ":" , hex(bssid[2]) , ":", \
+		 hex(bssid[3]) , ":" , hex(bssid[4]) , ":" , \
+		hex(bssid[5])
+	os._exit(0)
+
+class P2P_Invite (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 addr
+	global persistent_group_object
+
+	# Dbus Paths
+	global wpas_dbus_opath
+	global wpas_dbus_interfaces_opath
+	global wpas_dbus_interfaces_interface
+	global wpas_dbus_interfaces_p2pdevice
+
+	# Arguements
+	global P2PDictionary
+
+	# Constructor
+	def __init__(self,interface_name,wpas_dbus_interface,addr,
+						persistent_group_object):
+		# Initializes variables and threads
+		self.interface_name = interface_name
+		self.wpas_dbus_interface = wpas_dbus_interface
+		self.addr = addr
+		self.persistent_group_object = persistent_group_object
+
+		# 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)
+
+		#Adds listeners
+		self.bus.add_signal_receiver(InvitationResult,
+			dbus_interface=self.wpas_dbus_interfaces_p2pdevice,
+			signal_name="InvitationResult")
+
+	# Sets up p2p_invite dictionary
+	def constructArguements(self):
+		self.P2PDictionary = \
+			{'peer':dbus.ObjectPath(self.path+'/Peers/'+self.addr)}
+		if (self.persistent_group_object != None):
+			self.P2PDictionary.update({"persistent_group_object":
+					self.persistent_group_object})
+
+	# Run p2p_invite
+	def run(self):
+		try:
+			self.p2p_interface.Invite(self.P2PDictionary)
+
+		except:
+			print "Error:\n  Invalid Arguements"
+			usage()
+			os._exit(0)
+
+		# Allows other threads to keep working while MainLoop runs
+		# Required for timeout implementation
+		gobject.MainLoop().get_context().iteration(True)
+		gobject.threads_init()
+		gobject.MainLoop().run()
+
+if __name__ == "__main__":
+	# Defaults for optional inputs
+	addr = None
+	persistent_group_object = None
+	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:o:w:a:")
+
+	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
+		elif (key == "-a"):
+			addr = value
+		# Persistent group object path
+		elif (key == "-o"):
+			persistent_group_object = 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()
+
+	if (addr == None):
+		print "Error:\n  peer address is required"
+		usage()
+		quit()
+
+	try:
+		p2p_invite_test = \
+			P2P_Invite(interface_name,wpas_dbus_interface,
+					addr,persistent_group_object)
+	except:
+		print "Error:\n  Invalid Arguements"
+		usage()
+		os._exit(1)
+
+	p2p_invite_test.constructArguements()
+	p2p_invite_test.start()
+	time.sleep(10)
+	print "Error:\n  p2p_invite timed out"
+	os._exit(0)