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