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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
#! /usr/bin/env python
import sys
import dbus
import shlex
import subprocess
from signal import SIGTERM
from os import kill,path
from time import sleep
# dbus constants.
WPAS_DBUS_SERVICE = "fi.epitest.hostap.WPASupplicant"
WPAS_DBUS_INTERFACE = "fi.epitest.hostap.WPASupplicant"
WPAS_DBUS_OPATH = "/fi/epitest/hostap/WPASupplicant"
WPAS_DBUS_INTERFACES_INTERFACE = "fi.epitest.hostap.WPASupplicant.Interface"
WPAS_DBUS_INTERFACES_OPATH = "/fi/epitest/hostap/WPASupplicant/Interfaces"
WPAS_DBUS_BSSID_INTERFACE = "fi.epitest.hostap.WPASupplicant.BSSID"
WPAS_DBUS_NETWORKS_INTERFACE = "fi.epitest.hostap.WPASupplicant.Network"
def read_config(config):
cfg = shlex.split(open(config, "r").read())
options = {}
for line in cfg:
(var, delim, value) = line.partition('=')
if delim:
var = var.lstrip()
if var[0] != '#':
value = value.partition("#")[0].rstrip()
if value[0] == value[-1] and value[0] in ('"',"'"):
value=value[1:-1]
options[var] = value
return options
def wep_hex2dec(key):
if len(key) not in [10, 26]:
fail("Profile error: invalid KEY.", report_type="err")
x=0
new_key=[]
while x<len(key):
new_key.append(int(key[x:x+2],16))
x+=2
return new_key
# JP: connect to our hookable reporting functions in /usr/lib/network/globals
def report(report_type, *args):
report_handler.stdin.write('report_%s %s\n' % (report_type, ' '.join(map(repr,args))))
def fail(msg=None, report_type="fail"):
if msg:
report(report_type, msg)
try:
pid = open("/var/run/wpa_supplicant.pid").read()
except IOError:
pass
else:
kill(int(pid),SIGTERM)
sys.exit(1)
def start(profile, essid):
# TODO: Add check if it's even a wireless interface
# Interface up - probably redundant, should be 'ip' instead.
#try:
# subprocess.check_call(["ifconfig", profile['INTERFACE'], "up"])
#except subprocess.CalledProcessError:
# print " - Could not bring interface up"
# return False
# Manually set any iwconfig options - redundant, use custom wpa_supplicant config instead.
#if profile.has_key('IWCONFIG'):
# subprocess.call(["iwconfig", profile['INTERFACE'], profile['IWCONFIG']])
# Base arguments
args=["wpa_supplicant", "-Bu", "-P/var/run/wpa_supplicant.pid"]
try:
args.append(profile['WPA_OPTS'])
except KeyError:
args.append("-Dwext")
security = profile.get('SECURITY','none')
if security == "wpa-config":
try:
args.append("-c" + profile["WPA_CONF"])
except KeyError:
args.append("-c/etc/wpa_supplicant.conf")
elif not security in ['wpa', 'wep', 'none']:
fail("Profile error: invalid SECURITY.", report_type="err")
# Start wpa_supplicant
report('debug', 'wireless_dbus', 'starting wpa_supplicant')
supplicant = subprocess.Popen(args,stderr=subprocess.STDOUT,stdout=subprocess.PIPE)
output = supplicant.communicate()[0]
if supplicant.returncode not in [255,0]:
print >>sys.stderr, output # JP: print to stderr
fail("Couldn't start wpa_supplicant.")
# Connect to wpa_supplicant
report('debug', 'wireless_dbus', 'connecting to wpa_supplicant')
bus = dbus.SystemBus()
wpas_obj = bus.get_object(WPAS_DBUS_SERVICE, WPAS_DBUS_OPATH)
wpas = dbus.Interface(wpas_obj, WPAS_DBUS_INTERFACE)
# Add/Get interface path
try:
driver=profile["WPA_DRIVER"]
except KeyError:
driver="wext"
try:
path = wpas.getInterface(profile["INTERFACE"])
except dbus.exceptions.DBusException:
path = wpas.addInterface(profile["INTERFACE"], {"driver":dbus.String(driver,variant_level=1)})
# Get interface object
if_obj = bus.get_object(WPAS_DBUS_SERVICE, path)
iface = dbus.Interface(if_obj, WPAS_DBUS_INTERFACES_INTERFACE);
# Add and select the network. Networks already specified for wpa-config
if security in ['wpa','wep','none']:
report('debug', 'wireless_dbus', 'add and select network')
path = iface.addNetwork()
net_obj = bus.get_object(WPAS_DBUS_SERVICE, path)
rnet = dbus.Interface(net_obj, WPAS_DBUS_NETWORKS_INTERFACE)
iface.selectNetwork(rnet)
if not essid:
essid = profile["ESSID"]
if security == "wpa":
opts = dbus.Dictionary({"ssid": dbus.ByteArray(essid),
"psk": dbus.String(profile['KEY'])},
signature="sv")
report('debug', 'wireless_dbus', 'connect to network with security=wpa')
# next line crashes with
# dbus.exceptions.DBusException: fi.epitest.hostap.WPASupplicant.InvalidOptions: Did not receive correct message arguments
rnet.set(opts)
elif security == "wep":
key=profile['KEY']
if key[:2] == "s:": # String key prefixed by "s:"
keydbus=key[2:]
else: # Hex key
key=wep_hex2dec(key)
keydbus = dbus.ByteArray()
for l in key:
keydbus+=chr(l)
opts = dbus.Dictionary({"ssid": dbus.ByteArray(essid),
"key_mgmt": dbus.String("NONE"),
"wep_tx_keyidx": dbus.Int32(1),
"wep_key0": dbus.ByteArray(keydbus)},
signature="sv")
report('debug', 'wireless_dbus', 'connect to network with security=wep')
rnet.set(opts)
elif security == "none":
opts = dbus.Dictionary({"ssid": dbus.ByteArray(essid)},
signature="sv")
report('debug', 'wireless_dbus', 'connect to network with security=none')
rnet.set(opts)
# Determine timeout
try:
timeout = int(profile["TIMEOUT"])
except KeyError:
timeout = 15
# Check for association
n=0
while n <= timeout:
n+=1
sleep(1)
state = iface.state()
if state == "COMPLETED":
break
if n == timeout:
# fail("Association/Authentication failed:" + state)
fail("Couldn't associate/authenticate with wireless network.")
# Run ethernet and get an ip.
try:
subprocess.check_call([ETHERNET_IPROUTE, "up", sys.argv[2]])
except subprocess.CalledProcessError:
fail()
sys.exit(0)
def stop(profile):
ret = subprocess.call([ETHERNET_IPROUTE, "down", sys.argv[2]])
kill(int(open("/var/run/wpa_supplicant.pid").read()),SIGTERM)
sys.exit(ret)
def query(interface,request):
if request == 'profile' or request=='enabled':
ret = subprocess.call([WIRELESS, "query", interface, request, "-iproute"]) # JP: left some of the new query functionality in the wireless file because it's so bash-heavy
elif request=='associated':
ret = subprocess.call([WIRELESS, "query", interface, request, "-iproute", sys.argv[5], sys.argv[6]]) # JP: left some of the new query functionality in the wireless file because it's so bash-heavy
else:
ret = subprocess.call([ETHERNET_IPROUTE, "query", interface, request]) # JP: for these requests, we can call the ethernet-iproute functions directly and save some process overhead
sys.exit(ret)
def control(interface,action):
if action == 'enable' or action == 'disable':
ret = subprocess.call([WIRELESS, "control", interface, action])
else:
ret = subprocess.call([ETHERNET_IPROUTE, "control", interface, action]) # JP: for these actions, we can call the ethernet-iproute functions directly and save some process overhead
sys.exit(ret)
def verify(interface):
ret = subprocess.call([WIRELESS, "verify", interface])
sys.exit(ret)
if __name__ == "__main__":
CONN_DIR = path.abspath(path.dirname(sys.argv[0]))
ETHERNET_IPROUTE = path.join(CONN_DIR,"ethernet-iproute")
WIRELESS = path.join(CONN_DIR,"wireless")
if sys.argv[1] == "query":
interface,request = sys.argv[2:4]
query(interface,request)
elif sys.argv[1] == "control":
interface,action = sys.argv[2:4]
control(interface,action)
elif sys.argv[1] == "verify":
interface = sys.argv[2]
verify(interface)
else:
# setup bash report_* handler
report_handler_script = 'source /etc/rc.conf; source /etc/rc.d/functions; source %s/../globals; while read cmd args; do eval $cmd "$args"; done' % (CONN_DIR,)
report_handler = subprocess.Popen(report_handler_script, executable='/bin/bash', stdin=subprocess.PIPE, shell=True)
try:
profile_name = sys.argv[2]
profile = read_config("/etc/network.d/"+profile_name)
essid = sys.argv[3] if len(sys.argv)>3 else "" # JP: pass literal ESSID as an argument, so that we can have entry in profile be a regexp
if 'INTERFACE' not in profile:
fail("Profile error: no INTERFACE to configure.", report_type="err")
if sys.argv[1] == "up":
start(profile, essid)
elif sys.argv[1] == "down":
stop(profile)
finally:
report_handler.stdin.close()
report_handler.wait()
# vim: et ts=4
|