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
|
/*
* Copyright (C) 2009 Joshua Oreman <oremanj@rwcr.net>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <ipxe/net80211.h>
#include <ipxe/ethernet.h>
#include <usr/ifmgmt.h>
#include <usr/iwmgmt.h>
/** @file
*
* Wireless network interface management
*
*/
/**
* Print status of 802.11 device
*
* @v dev 802.11 device
*/
void iwstat ( struct net80211_device *dev ) {
ifstat ( dev->netdev );
printf ( " [802.11 ");
if ( dev->state & NET80211_ASSOCIATED ) {
printf ( "SSID '%s', ", dev->essid );
} else {
printf ( "not associated, " );
}
if ( dev->channel < dev->nr_channels && dev->rate < dev->nr_rates ) {
printf ( "Ch:%d Sig:%d", dev->channels[dev->channel].channel_nr,
dev->last_signal );
switch ( dev->hw->signal_type ) {
case NET80211_SIGNAL_NONE:
printf ( "?" );
break;
case NET80211_SIGNAL_ARBITRARY:
printf ( "/%d", dev->hw->signal_max );
break;
case NET80211_SIGNAL_DB:
printf ( "/%d dB", dev->hw->signal_max );
break;
case NET80211_SIGNAL_DBM:
printf ( " dBm" );
break;
}
printf ( ", Qual:%d%% Rate:%d Mbps]\n",
( dev->rx_beacon_interval == 0 ? 0 :
100 * dev->tx_beacon_interval /
dev->rx_beacon_interval ),
dev->rates[dev->rate] / 10 );
} else {
printf ( "antenna off]\n" );
}
if ( dev->state & NET80211_WORKING ) {
printf ( " [associating" );
if ( dev->associating )
printf ( " to '%s'", dev->associating->essid );
printf ( "...]\n" );
}
}
/** Identifiers for 802.11 cryptography types, indexed by type number */
static const char *crypto_types[] = {
[NET80211_CRYPT_NONE] = "Open",
[NET80211_CRYPT_WEP] = "WEP ",
[NET80211_CRYPT_TKIP] = "WPA ",
[NET80211_CRYPT_CCMP] = "WPA2",
[NET80211_CRYPT_UNKNOWN] = "UNK ",
};
/** Number of 802.11 cryptography types defined */
#define NR_CRYPTO_TYPES ( sizeof ( crypto_types ) / sizeof ( crypto_types[0] ) )
/** Identifiers for 802.11 authentication types, indexed by type number */
static const char *auth_types[] = {
[NET80211_SECPROT_NONE] = "",
[NET80211_SECPROT_PSK] = "PSK",
[NET80211_SECPROT_EAP] = "802.1X",
[NET80211_SECPROT_UNKNOWN] = "UNK",
};
/** Number of 802.11 authentication types defined */
#define NR_AUTH_TYPES ( sizeof ( auth_types ) / sizeof ( auth_types[0] ) )
/**
* Scan for wireless networks using 802.11 device
*
* @v dev 802.11 device
* @v active Whether to use active scanning
*
* The list of networks found will be printed in tabular format.
*
* This function is safe to call at all times, whether the 802.11
* device is open or not, but if called while the auto-association
* task is running it will return an error indication.
*/
int iwlist ( struct net80211_device *dev ) {
struct net80211_probe_ctx *ctx;
struct list_head *networks;
struct net80211_wlan *wlan;
char ssid_buf[22];
int rc;
unsigned i;
int was_opened = netdev_is_open ( dev->netdev );
int was_channel = dev->channels[dev->channel].channel_nr;
if ( ! was_opened ) {
dev->state |= NET80211_NO_ASSOC;
rc = netdev_open ( dev->netdev );
if ( rc < 0 )
goto err;
}
if ( dev->state & NET80211_WORKING ) {
rc = -EINVAL;
goto err_close_netdev;
}
if ( ! was_opened ) {
rc = net80211_prepare_probe ( dev, dev->hw->bands, 0 );
if ( rc < 0 )
goto err_close_netdev;
}
ctx = net80211_probe_start ( dev, "", 0 );
if ( ! ctx ) {
rc = -ENOMEM;
goto err_close_netdev;
}
while ( ! ( rc = net80211_probe_step ( ctx ) ) ) {
step();
}
networks = net80211_probe_finish_all ( ctx );
if ( list_empty ( networks ) ) {
goto err_free_networks;
}
rc = 0;
printf ( "Networks on %s:\n\n", dev->netdev->name );
/* Output format:
* 0 1 2 3 4 5 6
* 0123456789012345678901234567890123456789012345678901234567890
* [Sig] SSID BSSID Ch Crypt/Auth
* -------------------------------------------------------------
* [ 15] abcdefghijklmnopqrst> 00:00:00:00:00:00 11 Open
* ... or WPA PSK etc.
*/
/* Quoting the dashes and spaces verbatim uses less code space
than generating them programmatically. */
printf ( "[Sig] SSID BSSID Ch Crypt/Auth\n"
"-------------------------------------------------------------\n" );
list_for_each_entry ( wlan, networks, list ) {
/* Format SSID into 22-character string, space-padded,
with '>' indicating truncation */
snprintf ( ssid_buf, sizeof ( ssid_buf ), "%s", wlan->essid );
for ( i = strlen ( ssid_buf ); i < sizeof ( ssid_buf ) - 1;
i++ )
ssid_buf[i] = ' ';
if ( ssid_buf[sizeof ( ssid_buf ) - 2] != ' ' )
ssid_buf[sizeof ( ssid_buf ) - 2] = '>';
ssid_buf[sizeof ( ssid_buf ) - 1] = 0;
/* Sanity check */
if ( wlan->crypto >= NR_CRYPTO_TYPES ||
wlan->handshaking >= NR_AUTH_TYPES )
continue;
printf ( "[%3d] %s %s %2d %s %s\n",
wlan->signal < 0 ? 100 + wlan->signal : wlan->signal,
ssid_buf, eth_ntoa ( wlan->bssid ), wlan->channel,
crypto_types[wlan->crypto],
auth_types[wlan->handshaking] );
}
printf ( "\n" );
err_free_networks:
net80211_free_wlanlist ( networks );
err_close_netdev:
if ( ! was_opened ) {
dev->state &= ~NET80211_NO_ASSOC;
netdev_close ( dev->netdev );
} else {
net80211_change_channel ( dev, was_channel );
}
if ( ! rc )
return 0;
err:
printf ( "Scanning for networks on %s: %s\n",
dev->netdev->name, strerror ( rc ) );
return rc;
}
|
