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1import netlink.capi as nl
2import netlink.genl.capi as genl
3import nl80211
4import sys
5import traceback
6
7class test_class:
8	def __init__(self):
9		self.done = 1;
10
11def freq_to_ch(freq):
12	if freq == 2484:
13		return 14;
14
15	if freq < 2484:
16		return (freq - 2407) / 5;
17
18	# FIXME: dot11ChannelStartingFactor (802.11-2007 17.3.8.3.2)
19	if freq < 45000:
20		return freq/5 - 1000;
21
22	if freq >= 58320 and freq <= 64800:
23		return (freq - 56160) / 2160;
24
25	return 0;
26
27def handle_freq(attr, pol):
28	e, fattr = nl.py_nla_parse_nested(nl80211.NL80211_FREQUENCY_ATTR_MAX, attr, pol)
29	if nl80211.NL80211_FREQUENCY_ATTR_FREQ in fattr:
30		freq = nl.nla_get_u32(fattr[nl80211.NL80211_FREQUENCY_ATTR_FREQ])
31		sys.stdout.write("\t\tfreq %d MHz [%d]" % (freq, freq_to_ch(freq)))
32	if nl80211.NL80211_FREQUENCY_ATTR_MAX_TX_POWER in fattr and not (nl80211.NL80211_FREQUENCY_ATTR_DISABLED in fattr):
33		sys.stdout.write(" (%.1f dBm)" % (0.01 * nl.nla_get_u32(fattr[nl80211.NL80211_FREQUENCY_ATTR_MAX_TX_POWER])))
34	if nl80211.NL80211_FREQUENCY_ATTR_DISABLED in fattr:
35		sys.stdout.write(" (disabled)")
36	sys.stdout.write("\n")
37
38def handle_band(attr, fpol):
39	e, battr = nl.py_nla_parse_nested(nl80211.NL80211_BAND_ATTR_MAX, attr, None)
40	print("\tband %d:" % nl.nla_type(attr))
41	if nl80211.NL80211_BAND_ATTR_FREQS in battr:
42		for fattr in nl.nla_get_nested(battr[nl80211.NL80211_BAND_ATTR_FREQS]):
43			handle_freq(fattr, fpol)
44
45def cipher_name(suite):
46	suite_val = '%02x%02x%02x%02x' % tuple(reversed(suite))
47	if suite_val == '000fac01':
48		return "WEP40 (00-0f-ac:1)"
49	elif suite_val == '000fac05':
50		return "WEP104 (00-0f-ac:5)"
51	elif suite_val == '000fac02':
52		return "TKIP (00-0f-ac:2)"
53	elif suite_val == '000fac04':
54		return "CCMP (00-0f-ac:4)"
55	elif suite_val == '000fac06':
56		return "CMAC (00-0f-ac:6)"
57	elif suite_val == '000fac08':
58		return "GCMP (00-0f-ac:8)"
59	elif suite_val == '00147201':
60		return "WPI-SMS4 (00-14-72:1)"
61	else:
62		return suite_val
63
64def msg_handler(m, a):
65	try:
66		e, attr = genl.py_genlmsg_parse(nl.nlmsg_hdr(m), 0,
67						nl80211.NL80211_ATTR_MAX, None)
68		if nl80211.NL80211_ATTR_WIPHY_NAME in attr:
69			print('wiphy %s' % nl.nla_get_string(attr[nl80211.NL80211_ATTR_WIPHY_NAME]))
70		if nl80211.NL80211_ATTR_WIPHY_BANDS in attr:
71			fpol = nl.nla_policy_array(nl80211.NL80211_FREQUENCY_ATTR_MAX + 1)
72			fpol[nl80211.NL80211_FREQUENCY_ATTR_FREQ].type = nl.NLA_U32
73			fpol[nl80211.NL80211_FREQUENCY_ATTR_DISABLED].type = nl.NLA_FLAG
74			fpol[nl80211.NL80211_FREQUENCY_ATTR_PASSIVE_SCAN].type = nl.NLA_FLAG
75			fpol[nl80211.NL80211_FREQUENCY_ATTR_NO_IBSS].type = nl.NLA_FLAG
76			fpol[nl80211.NL80211_FREQUENCY_ATTR_RADAR].type = nl.NLA_FLAG
77			fpol[nl80211.NL80211_FREQUENCY_ATTR_MAX_TX_POWER].type = nl.NLA_U32
78
79			nattrs = nl.nla_get_nested(attr[nl80211.NL80211_ATTR_WIPHY_BANDS])
80			for nattr in nattrs:
81				handle_band(nattr, fpol)
82		if nl80211.NL80211_ATTR_CIPHER_SUITES in attr:
83			ciphers = nl.nla_data(attr[nl80211.NL80211_ATTR_CIPHER_SUITES])
84			num = len(ciphers) / 4
85			if num > 0:
86				print("\tSupported Ciphers:");
87				for i in range(0, num, 4):
88					print("\t\t* %s" % cipher_name(ciphers[i:i+4]))
89		if nl80211.NL80211_ATTR_SUPPORTED_IFTYPES in attr:
90			print("\tSupported interface modes:")
91			ifattr = nl.nla_get_nested(attr[nl80211.NL80211_ATTR_SUPPORTED_IFTYPES])
92			for nl_mode in ifattr:
93				print("\t\t* %s" % nl80211.nl80211_iftype2str[nl.nla_type(nl_mode)])
94		if nl80211.NL80211_ATTR_SOFTWARE_IFTYPES in attr:
95			print("\tsoftware interface modes (can always be added):")
96			ifattr = nl.nla_get_nested(attr[nl80211.NL80211_ATTR_SOFTWARE_IFTYPES])
97			for nl_mode in ifattr:
98				print("\t\t* %s" % nl80211.nl80211_iftype2str[nl.nla_type(nl_mode)])
99		return nl.NL_SKIP
100	except Exception as e:
101		(t,v,tb) = sys.exc_info()
102		print v.message
103		traceback.print_tb(tb)
104
105def error_handler(err, a):
106	a.done = err.error
107	return nl.NL_STOP
108
109def finish_handler(m, a):
110	return nl.NL_SKIP
111
112def ack_handler(m, a):
113	a.done = 0
114	return nl.NL_STOP
115
116try:
117	cbd = test_class()
118	tx_cb = nl.nl_cb_alloc(nl.NL_CB_DEFAULT)
119	rx_cb = nl.nl_cb_clone(tx_cb)
120	s = nl.nl_socket_alloc_cb(tx_cb)
121	nl.py_nl_cb_err(rx_cb, nl.NL_CB_CUSTOM, error_handler, cbd);
122	nl.py_nl_cb_set(rx_cb, nl.NL_CB_FINISH, nl.NL_CB_CUSTOM, finish_handler, cbd);
123	nl.py_nl_cb_set(rx_cb, nl.NL_CB_ACK, nl.NL_CB_CUSTOM, ack_handler, cbd);
124	nl.py_nl_cb_set(rx_cb, nl.NL_CB_VALID, nl.NL_CB_CUSTOM, msg_handler, cbd);
125
126	genl.genl_connect(s)
127	family = genl.genl_ctrl_resolve(s, 'nl80211')
128	m = nl.nlmsg_alloc()
129	genl.genlmsg_put(m, 0, 0, family, 0, 0, nl80211.NL80211_CMD_GET_WIPHY, 0)
130	nl.nla_put_u32(m, nl80211.NL80211_ATTR_WIPHY, 7)
131
132	err = nl.nl_send_auto_complete(s, m);
133	if err < 0:
134		nl.nlmsg_free(msg)
135
136	while cbd.done > 0 and not err < 0:
137		err = nl.nl_recvmsgs(s, rx_cb)
138except Exception as e:
139	(t, v, tb) = sys.exc_info()
140	print v.message
141	traceback.print_tb(tb)
142