aboutsummaryrefslogtreecommitdiffstats
path: root/wpa_supplicant/examples/p2p/p2p_find.py
blob: 9c860d1e13a36b02193f43af1f61161801d9f3e3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
#!/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 as 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()