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#!/usr/bin/python
# Tests p2p_find
# Will list all devices found/lost within a time frame (timeout)
# Then Program will exit
######### 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> [-t <timeout>] \ " \
% sys.argv[0]
print " [-w <wpas_dbus_interface>]"
print "Options:"
print " -i = interface name"
print " -t = timeout = 0s (infinite)"
print " -w = wpas dbus interface = fi.w1.wpa_supplicant1"
print "Example:"
print " %s -i wlan0 -t 10" % sys.argv[0]
# Required Signals
def deviceFound(devicepath):
print "Device found: %s" % (devicepath)
def deviceLost(devicepath):
print "Device lost: %s" % (devicepath)
class P2P_Find (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 timeout
global path
# 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.timeout = int(timeout)
self.interface_name = interface_name
self.wpas_dbus_interface = wpas_dbus_interface
# 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 for find and lost
self.bus.add_signal_receiver(deviceFound,
dbus_interface=self.wpas_dbus_interfaces_p2pdevice,
signal_name="DeviceFound")
self.bus.add_signal_receiver(deviceLost,
dbus_interface=self.wpas_dbus_interfaces_p2pdevice,
signal_name="DeviceLost")
# Sets up p2p_find
P2PFindDict = dbus.Dictionary(
{'Timeout':int(self.timeout)})
self.p2p_interface.Find(P2PFindDict)
# Run p2p_find
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()
gobject.MainLoop().run()
if __name__ == "__main__":
# Defaults for optional inputs
timeout = 0
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:t: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
# Timeout
elif (key == "-t"):
if ( int(value) >= 0):
timeout = value
else:
print "Error:\n Timeout cannot be negative"
usage()
quit()
# 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_find_test = P2P_Find(interface_name, wpas_dbus_interface, timeout)
except:
print "Error:\n Invalid wpas_dbus_interface"
usage()
quit()
# Start P2P_Find
p2p_find_test.start()
try:
# If timeout is 0, then run forever
if (timeout == 0):
while(True):
pass
# Else sleep for (timeout)
else:
time.sleep(p2p_find_test.timeout)
except:
pass
quit()
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