diff options
Diffstat (limited to 'roms/ipxe/src/usr/iwmgmt.c')
| -rw-r--r-- | roms/ipxe/src/usr/iwmgmt.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/roms/ipxe/src/usr/iwmgmt.c b/roms/ipxe/src/usr/iwmgmt.c new file mode 100644 index 000000000..29f623c37 --- /dev/null +++ b/roms/ipxe/src/usr/iwmgmt.c @@ -0,0 +1,226 @@ +/* + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +#include <stdio.h> +#include <ipxe/console.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; +} |