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Annotation of qemu/roms/ipxe/src/usr/iwmgmt.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (C) 2009 Joshua Oreman <[email protected]>.
        !             3:  *
        !             4:  * This program is free software; you can redistribute it and/or
        !             5:  * modify it under the terms of the GNU General Public License as
        !             6:  * published by the Free Software Foundation; either version 2 of the
        !             7:  * License, or any later version.
        !             8:  *
        !             9:  * This program is distributed in the hope that it will be useful, but
        !            10:  * WITHOUT ANY WARRANTY; without even the implied warranty of
        !            11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            12:  * General Public License for more details.
        !            13:  *
        !            14:  * You should have received a copy of the GNU General Public License
        !            15:  * along with this program; if not, write to the Free Software
        !            16:  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
        !            17:  */
        !            18: 
        !            19: FILE_LICENCE ( GPL2_OR_LATER );
        !            20: 
        !            21: #include <stdio.h>
        !            22: #include <ipxe/console.h>
        !            23: #include <string.h>
        !            24: #include <errno.h>
        !            25: #include <ipxe/net80211.h>
        !            26: #include <ipxe/ethernet.h>
        !            27: #include <usr/ifmgmt.h>
        !            28: #include <usr/iwmgmt.h>
        !            29: 
        !            30: /** @file
        !            31:  *
        !            32:  * Wireless network interface management
        !            33:  *
        !            34:  */
        !            35: 
        !            36: /**
        !            37:  * Print status of 802.11 device
        !            38:  *
        !            39:  * @v dev      802.11 device
        !            40:  */
        !            41: void iwstat ( struct net80211_device *dev ) {
        !            42: 
        !            43:        ifstat ( dev->netdev );
        !            44: 
        !            45:        printf ( "  [802.11 ");
        !            46:        if ( dev->state & NET80211_ASSOCIATED ) {
        !            47:                printf ( "SSID '%s', ", dev->essid );
        !            48:        } else {
        !            49:                printf ( "not associated, " );
        !            50:        }
        !            51:        if ( dev->channel < dev->nr_channels && dev->rate < dev->nr_rates ) {
        !            52:                printf ( "Ch:%d Sig:%d", dev->channels[dev->channel].channel_nr,
        !            53:                         dev->last_signal );
        !            54:                switch ( dev->hw->signal_type ) {
        !            55:                case NET80211_SIGNAL_NONE:
        !            56:                        printf ( "?" );
        !            57:                        break;
        !            58:                case NET80211_SIGNAL_ARBITRARY:
        !            59:                        printf ( "/%d", dev->hw->signal_max );
        !            60:                        break;
        !            61:                case NET80211_SIGNAL_DB:
        !            62:                        printf ( "/%d dB", dev->hw->signal_max );
        !            63:                        break;
        !            64:                case NET80211_SIGNAL_DBM:
        !            65:                        printf ( " dBm" );
        !            66:                        break;
        !            67:                }
        !            68:                printf ( ", Qual:%d%% Rate:%d Mbps]\n",
        !            69:                         ( dev->rx_beacon_interval == 0 ? 0 :
        !            70:                           100 * dev->tx_beacon_interval /
        !            71:                           dev->rx_beacon_interval ),
        !            72:                         dev->rates[dev->rate] / 10 );
        !            73:        } else {
        !            74:                printf ( "antenna off]\n" );
        !            75:        }
        !            76: 
        !            77:        if ( dev->state & NET80211_WORKING ) {
        !            78:                printf ( "  [associating" );
        !            79:                if ( dev->associating )
        !            80:                        printf ( " to '%s'", dev->associating->essid );
        !            81:                printf ( "...]\n" );
        !            82:        }
        !            83: }
        !            84: 
        !            85: /** Identifiers for 802.11 cryptography types, indexed by type number */
        !            86: static const char *crypto_types[] = {
        !            87:        [NET80211_CRYPT_NONE] = "Open",
        !            88:        [NET80211_CRYPT_WEP] = "WEP ",
        !            89:        [NET80211_CRYPT_TKIP] = "WPA ",
        !            90:        [NET80211_CRYPT_CCMP] = "WPA2",
        !            91:        [NET80211_CRYPT_UNKNOWN] = "UNK ",
        !            92: };
        !            93: 
        !            94: /** Number of 802.11 cryptography types defined */
        !            95: #define NR_CRYPTO_TYPES ( sizeof ( crypto_types ) / sizeof ( crypto_types[0] ) )
        !            96: 
        !            97: /** Identifiers for 802.11 authentication types, indexed by type number */
        !            98: static const char *auth_types[] = {
        !            99:        [NET80211_SECPROT_NONE] = "",
        !           100:        [NET80211_SECPROT_PSK] = "PSK",
        !           101:        [NET80211_SECPROT_EAP] = "802.1X",
        !           102:        [NET80211_SECPROT_UNKNOWN] = "UNK",
        !           103: };
        !           104: 
        !           105: /** Number of 802.11 authentication types defined */
        !           106: #define NR_AUTH_TYPES ( sizeof ( auth_types ) / sizeof ( auth_types[0] ) )
        !           107: 
        !           108: /**
        !           109:  * Scan for wireless networks using 802.11 device
        !           110:  *
        !           111:  * @v dev      802.11 device
        !           112:  * @v active   Whether to use active scanning
        !           113:  *
        !           114:  * The list of networks found will be printed in tabular format.
        !           115:  *
        !           116:  * This function is safe to call at all times, whether the 802.11
        !           117:  * device is open or not, but if called while the auto-association
        !           118:  * task is running it will return an error indication.
        !           119:  */
        !           120: int iwlist ( struct net80211_device *dev ) {
        !           121:        struct net80211_probe_ctx *ctx;
        !           122:        struct list_head *networks;
        !           123:        struct net80211_wlan *wlan;
        !           124:        char ssid_buf[22];
        !           125:        int rc;
        !           126:        unsigned i;
        !           127:        int was_opened = netdev_is_open ( dev->netdev );
        !           128:        int was_channel = dev->channels[dev->channel].channel_nr;
        !           129: 
        !           130:        if ( ! was_opened ) {
        !           131:                dev->state |= NET80211_NO_ASSOC;
        !           132:                rc = netdev_open ( dev->netdev );
        !           133:                if ( rc < 0 )
        !           134:                        goto err;
        !           135:        }
        !           136: 
        !           137:        if ( dev->state & NET80211_WORKING ) {
        !           138:                rc = -EINVAL;
        !           139:                goto err_close_netdev;
        !           140:        }
        !           141: 
        !           142:        if ( ! was_opened ) {
        !           143:                rc = net80211_prepare_probe ( dev, dev->hw->bands, 0 );
        !           144:                if ( rc < 0 )
        !           145:                        goto err_close_netdev;
        !           146:        }
        !           147: 
        !           148:        ctx = net80211_probe_start ( dev, "", 0 );
        !           149:        if ( ! ctx ) {
        !           150:                rc = -ENOMEM;
        !           151:                goto err_close_netdev;
        !           152:        }
        !           153: 
        !           154:        while ( ! ( rc = net80211_probe_step ( ctx ) ) ) {
        !           155:                step();
        !           156:        }
        !           157: 
        !           158:        networks = net80211_probe_finish_all ( ctx );
        !           159: 
        !           160:        if ( list_empty ( networks ) ) {
        !           161:                goto err_free_networks;
        !           162:        }
        !           163: 
        !           164:        rc = 0;
        !           165: 
        !           166:        printf ( "Networks on %s:\n\n", dev->netdev->name );
        !           167: 
        !           168:        /* Output format:
        !           169:         * 0         1         2         3         4         5         6
        !           170:         * 0123456789012345678901234567890123456789012345678901234567890
        !           171:         * [Sig] SSID                  BSSID              Ch  Crypt/Auth
        !           172:         * -------------------------------------------------------------
        !           173:         * [ 15] abcdefghijklmnopqrst> 00:00:00:00:00:00  11  Open
        !           174:         *                                             ... or WPA   PSK etc.
        !           175:         */
        !           176: 
        !           177:        /* Quoting the dashes and spaces verbatim uses less code space
        !           178:           than generating them programmatically. */
        !           179:        printf ( "[Sig] SSID                  BSSID              Ch  Crypt/Auth\n"
        !           180:                 "-------------------------------------------------------------\n" );
        !           181: 
        !           182:        list_for_each_entry ( wlan, networks, list ) {
        !           183: 
        !           184:                /* Format SSID into 22-character string, space-padded,
        !           185:                   with '>' indicating truncation */
        !           186: 
        !           187:                snprintf ( ssid_buf, sizeof ( ssid_buf ), "%s", wlan->essid );
        !           188:                for ( i = strlen ( ssid_buf ); i < sizeof ( ssid_buf ) - 1;
        !           189:                      i++ )
        !           190:                        ssid_buf[i] = ' ';
        !           191:                if ( ssid_buf[sizeof ( ssid_buf ) - 2] != ' ' )
        !           192:                        ssid_buf[sizeof ( ssid_buf ) - 2] = '>';
        !           193:                ssid_buf[sizeof ( ssid_buf ) - 1] = 0;
        !           194: 
        !           195:                /* Sanity check */
        !           196:                if ( wlan->crypto >= NR_CRYPTO_TYPES ||
        !           197:                     wlan->handshaking >= NR_AUTH_TYPES )
        !           198:                        continue;
        !           199: 
        !           200:                printf ( "[%3d] %s %s  %2d  %s  %s\n",
        !           201:                         wlan->signal < 0 ? 100 + wlan->signal : wlan->signal,
        !           202:                         ssid_buf, eth_ntoa ( wlan->bssid ), wlan->channel,
        !           203:                         crypto_types[wlan->crypto],
        !           204:                         auth_types[wlan->handshaking] );
        !           205:        }
        !           206:        printf ( "\n" );
        !           207: 
        !           208:  err_free_networks:
        !           209:        net80211_free_wlanlist ( networks );
        !           210: 
        !           211:  err_close_netdev:
        !           212:        if ( ! was_opened ) {
        !           213:                dev->state &= ~NET80211_NO_ASSOC;
        !           214:                netdev_close ( dev->netdev );
        !           215:        } else {
        !           216:                net80211_change_channel ( dev, was_channel );
        !           217:        }
        !           218: 
        !           219:        if ( ! rc )
        !           220:                return 0;
        !           221: 
        !           222:  err:
        !           223:        printf ( "Scanning for networks on %s: %s\n",
        !           224:                 dev->netdev->name, strerror ( rc ) );
        !           225:        return rc;
        !           226: }

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