/****************************************************************************** Copyright(c) 2004 Intel Corporation. All rights reserved. Portions of this file are based on the WEP enablement code provided by the Host AP project hostap-drivers v0.1.3 Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen Copyright (c) 2002-2003, Jouni Malinen This program is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License as published by the Free Software Foundation. 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. The full GNU General Public License is included in this distribution in the file called LICENSE. Contact Information: James P. Ketrenos Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 ******************************************************************************/ #include #include #include #include static const char *ieee80211_modes[] = { "?", "a", "b", "ab", "g", "ag", "bg", "abg" }; #define MAX_CUSTOM_LEN 64 static inline char *ipw2100_translate_scan(struct ieee80211_device *ieee, char *start, char *stop, struct ieee80211_network *network) { char custom[MAX_CUSTOM_LEN]; char *p; struct iw_event iwe; int i, j; u8 max_rate, rate; /* First entry *MUST* be the AP MAC address */ iwe.cmd = SIOCGIWAP; iwe.u.ap_addr.sa_family = ARPHRD_ETHER; memcpy(iwe.u.ap_addr.sa_data, network->bssid, ETH_ALEN); start = iwe_stream_add_event(start, stop, &iwe, IW_EV_ADDR_LEN); /* Remaining entries will be displayed in the order we provide them */ /* Add the ESSID */ iwe.cmd = SIOCGIWESSID; iwe.u.data.flags = 1; if (network->flags & NETWORK_EMPTY_ESSID) { iwe.u.data.length = sizeof(""); start = iwe_stream_add_point(start, stop, &iwe, ""); } else { iwe.u.data.length = min(network->ssid_len, (u8) 32); start = iwe_stream_add_point(start, stop, &iwe, network->ssid); } /* Add the protocol name */ iwe.cmd = SIOCGIWNAME; snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s", ieee80211_modes[network->mode]); start = iwe_stream_add_event(start, stop, &iwe, IW_EV_CHAR_LEN); /* Add mode */ iwe.cmd = SIOCGIWMODE; if (network->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) { if (network->capability & WLAN_CAPABILITY_ESS) iwe.u.mode = IW_MODE_MASTER; else iwe.u.mode = IW_MODE_ADHOC; start = iwe_stream_add_event(start, stop, &iwe, IW_EV_UINT_LEN); } /* Add frequency/channel */ iwe.cmd = SIOCGIWFREQ; /* iwe.u.freq.m = ieee80211_frequency(network->channel, network->mode); iwe.u.freq.e = 3; */ iwe.u.freq.m = network->channel; iwe.u.freq.e = 0; iwe.u.freq.i = 0; start = iwe_stream_add_event(start, stop, &iwe, IW_EV_FREQ_LEN); /* Add encryption capability */ iwe.cmd = SIOCGIWENCODE; if (network->capability & WLAN_CAPABILITY_PRIVACY) iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; else iwe.u.data.flags = IW_ENCODE_DISABLED; iwe.u.data.length = 0; start = iwe_stream_add_point(start, stop, &iwe, network->ssid); /* Add basic and extended rates */ max_rate = 0; p = custom; p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Rates (Mb/s): "); for (i = 0, j = 0; i < network->rates_len;) { if (j < network->rates_ex_len && ((network->rates_ex[j] & 0x7F) < (network->rates[i] & 0x7F))) rate = network->rates_ex[j++] & 0x7F; else rate = network->rates[i++] & 0x7F; if (rate > max_rate) max_rate = rate; p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "%d%s ", rate >> 1, (rate & 1) ? ".5" : ""); } for (; j < network->rates_ex_len; j++) { rate = network->rates_ex[j] & 0x7F; p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "%d%s ", rate >> 1, (rate & 1) ? ".5" : ""); if (rate > max_rate) max_rate = rate; } iwe.cmd = SIOCGIWRATE; iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; iwe.u.bitrate.value = max_rate * 500000; start = iwe_stream_add_event(start, stop, &iwe, IW_EV_PARAM_LEN); iwe.cmd = IWEVCUSTOM; iwe.u.data.length = p - custom; if (iwe.u.data.length) start = iwe_stream_add_point(start, stop, &iwe, custom); /* Add quality statistics */ /* TODO: Fix these values... */ iwe.cmd = IWEVQUAL; iwe.u.qual.qual = network->stats.signal; iwe.u.qual.level = network->stats.rssi; iwe.u.qual.noise = network->stats.noise; iwe.u.qual.updated = network->stats.mask & IEEE80211_STATMASK_WEMASK; if (!(network->stats.mask & IEEE80211_STATMASK_RSSI)) iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID; if (!(network->stats.mask & IEEE80211_STATMASK_NOISE)) iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID; if (!(network->stats.mask & IEEE80211_STATMASK_SIGNAL)) iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID; start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN); iwe.cmd = IWEVCUSTOM; p = custom; iwe.u.data.length = p - custom; if (iwe.u.data.length) start = iwe_stream_add_point(start, stop, &iwe, custom); if (ieee->wpa_enabled && network->wpa_ie_len) { char buf[MAX_WPA_IE_LEN * 2 + 30]; u8 *p = buf; p += sprintf(p, "wpa_ie="); for (i = 0; i < network->wpa_ie_len; i++) { p += sprintf(p, "%02x", network->wpa_ie[i]); } memset(&iwe, 0, sizeof(iwe)); iwe.cmd = IWEVCUSTOM; iwe.u.data.length = strlen(buf); start = iwe_stream_add_point(start, stop, &iwe, buf); } if (ieee->wpa_enabled && network->rsn_ie_len) { char buf[MAX_WPA_IE_LEN * 2 + 30]; u8 *p = buf; p += sprintf(p, "rsn_ie="); for (i = 0; i < network->rsn_ie_len; i++) { p += sprintf(p, "%02x", network->rsn_ie[i]); } memset(&iwe, 0, sizeof(iwe)); iwe.cmd = IWEVCUSTOM; iwe.u.data.length = strlen(buf); start = iwe_stream_add_point(start, stop, &iwe, buf); } /* Add EXTRA: Age to display seconds since last beacon/probe response * for given network. */ iwe.cmd = IWEVCUSTOM; p = custom; p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Last beacon: %lums ago", (jiffies - network->last_scanned) / (HZ / 100)); iwe.u.data.length = p - custom; if (iwe.u.data.length) start = iwe_stream_add_point(start, stop, &iwe, custom); return start; } int ieee80211_wx_get_scan(struct ieee80211_device *ieee, struct iw_request_info *info, union iwreq_data *wrqu, char *extra) { struct ieee80211_network *network; unsigned long flags; char *ev = extra; char *stop = ev + IW_SCAN_MAX_DATA; int i = 0; IEEE80211_DEBUG_WX("Getting scan\n"); spin_lock_irqsave(&ieee->lock, flags); list_for_each_entry(network, &ieee->network_list, list) { i++; if (ieee->scan_age == 0 || time_after(network->last_scanned + ieee->scan_age, jiffies)) ev = ipw2100_translate_scan(ieee, ev, stop, network); else IEEE80211_DEBUG_SCAN("Not showing network '%s (" MAC_FMT ")' due to age (%lums).\n", escape_essid(network->ssid, network->ssid_len), MAC_ARG(network->bssid), (jiffies - network->last_scanned) / (HZ / 100)); } spin_unlock_irqrestore(&ieee->lock, flags); wrqu->data.length = ev - extra; wrqu->data.flags = 0; IEEE80211_DEBUG_WX("exit: %d networks returned.\n", i); return 0; } int ieee80211_wx_set_encode(struct ieee80211_device *ieee, struct iw_request_info *info, union iwreq_data *wrqu, char *keybuf) { struct iw_point *erq = &(wrqu->encoding); struct net_device *dev = ieee->dev; struct ieee80211_security sec = { .flags = 0 }; int i, key, key_provided, len; struct ieee80211_crypt_data **crypt; IEEE80211_DEBUG_WX("SET_ENCODE\n"); key = erq->flags & IW_ENCODE_INDEX; if (key) { if (key > WEP_KEYS) return -EINVAL; key--; key_provided = 1; } else { key_provided = 0; key = ieee->tx_keyidx; } IEEE80211_DEBUG_WX("Key: %d [%s]\n", key, key_provided ? "provided" : "default"); crypt = &ieee->crypt[key]; if (erq->flags & IW_ENCODE_DISABLED) { if (key_provided && *crypt) { IEEE80211_DEBUG_WX("Disabling encryption on key %d.\n", key); ieee80211_crypt_delayed_deinit(ieee, crypt); } else IEEE80211_DEBUG_WX("Disabling encryption.\n"); /* Check all the keys to see if any are still configured, * and if no key index was provided, de-init them all */ for (i = 0; i < WEP_KEYS; i++) { if (ieee->crypt[i] != NULL) { if (key_provided) break; ieee80211_crypt_delayed_deinit(ieee, &ieee->crypt[i]); } } if (i == WEP_KEYS) { sec.enabled = 0; sec.level = SEC_LEVEL_0; sec.flags |= SEC_ENABLED | SEC_LEVEL; } goto done; } sec.enabled = 1; sec.flags |= SEC_ENABLED; if (*crypt != NULL && (*crypt)->ops != NULL && strcmp((*crypt)->ops->name, "WEP") != 0) { /* changing to use WEP; deinit previously used algorithm * on this key */ ieee80211_crypt_delayed_deinit(ieee, crypt); } if (*crypt == NULL) { struct ieee80211_crypt_data *new_crypt; /* take WEP into use */ new_crypt = kmalloc(sizeof(struct ieee80211_crypt_data), GFP_KERNEL); if (new_crypt == NULL) return -ENOMEM; memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data)); new_crypt->ops = ieee80211_get_crypto_ops("WEP"); if (!new_crypt->ops) { request_module("ieee80211_crypt_wep"); new_crypt->ops = ieee80211_get_crypto_ops("WEP"); } if (new_crypt->ops && try_module_get(new_crypt->ops->owner)) new_crypt->priv = new_crypt->ops->init(key); if (!new_crypt->ops || !new_crypt->priv) { kfree(new_crypt); new_crypt = NULL; printk(KERN_WARNING "%s: could not initialize WEP: " "load module ieee80211_crypt_wep\n", dev->name); return -EOPNOTSUPP; } *crypt = new_crypt; } /* If a new key was provided, set it up */ if (erq->length > 0) { len = erq->length <= 5 ? 5 : 13; memcpy(sec.keys[key], keybuf, erq->length); if (len > erq->length) memset(sec.keys[key] + erq->length, 0, len - erq->length); IEEE80211_DEBUG_WX("Setting key %d to '%s' (%d:%d bytes)\n", key, escape_essid(sec.keys[key], len), erq->length, len); sec.key_sizes[key] = len; (*crypt)->ops->set_key(sec.keys[key], len, NULL, (*crypt)->priv); sec.flags |= (1 << key); /* This ensures a key will be activated if no key is * explicitely set */ if (key == sec.active_key) sec.flags |= SEC_ACTIVE_KEY; } else { len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN, NULL, (*crypt)->priv); if (len == 0) { /* Set a default key of all 0 */ IEEE80211_DEBUG_WX("Setting key %d to all zero.\n", key); memset(sec.keys[key], 0, 13); (*crypt)->ops->set_key(sec.keys[key], 13, NULL, (*crypt)->priv); sec.key_sizes[key] = 13; sec.flags |= (1 << key); } /* No key data - just set the default TX key index */ if (key_provided) { IEEE80211_DEBUG_WX ("Setting key %d to default Tx key.\n", key); ieee->tx_keyidx = key; sec.active_key = key; sec.flags |= SEC_ACTIVE_KEY; } } done: ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED); sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY; sec.flags |= SEC_AUTH_MODE; IEEE80211_DEBUG_WX("Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ? "OPEN" : "SHARED KEY"); /* For now we just support WEP, so only set that security level... * TODO: When WPA is added this is one place that needs to change */ sec.flags |= SEC_LEVEL; sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */ if (ieee->set_security) ieee->set_security(dev, &sec); /* Do not reset port if card is in Managed mode since resetting will * generate new IEEE 802.11 authentication which may end up in looping * with IEEE 802.1X. If your hardware requires a reset after WEP * configuration (for example... Prism2), implement the reset_port in * the callbacks structures used to initialize the 802.11 stack. */ if (ieee->reset_on_keychange && ieee->iw_mode != IW_MODE_INFRA && ieee->reset_port && ieee->reset_port(dev)) { printk(KERN_DEBUG "%s: reset_port failed\n", dev->name); return -EINVAL; } return 0; } int ieee80211_wx_get_encode(struct ieee80211_device *ieee, struct iw_request_info *info, union iwreq_data *wrqu, char *keybuf) { struct iw_point *erq = &(wrqu->encoding); int len, key; struct ieee80211_crypt_data *crypt; IEEE80211_DEBUG_WX("GET_ENCODE\n"); key = erq->flags & IW_ENCODE_INDEX; if (key) { if (key > WEP_KEYS) return -EINVAL; key--; } else key = ieee->tx_keyidx; crypt = ieee->crypt[key]; erq->flags = key + 1; if (crypt == NULL || crypt->ops == NULL) { erq->length = 0; erq->flags |= IW_ENCODE_DISABLED; return 0; } if (strcmp(crypt->ops->name, "WEP") != 0) { /* only WEP is supported with wireless extensions, so just * report that encryption is used */ erq->length = 0; erq->flags |= IW_ENCODE_ENABLED; return 0; } len = crypt->ops->get_key(keybuf, WEP_KEY_LEN, NULL, crypt->priv); erq->length = (len >= 0 ? len : 0); erq->flags |= IW_ENCODE_ENABLED; if (ieee->open_wep) erq->flags |= IW_ENCODE_OPEN; else erq->flags |= IW_ENCODE_RESTRICTED; return 0; } EXPORT_SYMBOL(ieee80211_wx_get_scan); EXPORT_SYMBOL(ieee80211_wx_set_encode); EXPORT_SYMBOL(ieee80211_wx_get_encode);