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Diffstat (limited to 'net/ieee80211/softmac/ieee80211softmac_auth.c')
-rw-r--r--net/ieee80211/softmac/ieee80211softmac_auth.c413
1 files changed, 0 insertions, 413 deletions
diff --git a/net/ieee80211/softmac/ieee80211softmac_auth.c b/net/ieee80211/softmac/ieee80211softmac_auth.c
deleted file mode 100644
index 1a96c257257..00000000000
--- a/net/ieee80211/softmac/ieee80211softmac_auth.c
+++ /dev/null
@@ -1,413 +0,0 @@
-/*
- * This file contains the softmac's authentication logic.
- *
- * Copyright (c) 2005, 2006 Johannes Berg <johannes@sipsolutions.net>
- * Joseph Jezak <josejx@gentoo.org>
- * Larry Finger <Larry.Finger@lwfinger.net>
- * Danny van Dyk <kugelfang@gentoo.org>
- * Michael Buesch <mbuesch@freenet.de>
- *
- * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * The full GNU General Public License is included in this distribution in the
- * file called COPYING.
- */
-
-#include "ieee80211softmac_priv.h"
-
-static void ieee80211softmac_auth_queue(struct work_struct *work);
-
-/* Queues an auth request to the desired AP */
-int
-ieee80211softmac_auth_req(struct ieee80211softmac_device *mac,
- struct ieee80211softmac_network *net)
-{
- struct ieee80211softmac_auth_queue_item *auth;
- unsigned long flags;
- DECLARE_MAC_BUF(mac2);
-
- if (net->authenticating || net->authenticated)
- return 0;
- net->authenticating = 1;
-
- /* Add the network if it's not already added */
- ieee80211softmac_add_network(mac, net);
-
- dprintk(KERN_NOTICE PFX "Queueing Authentication Request to %s\n", print_mac(mac2, net->bssid));
- /* Queue the auth request */
- auth = (struct ieee80211softmac_auth_queue_item *)
- kmalloc(sizeof(struct ieee80211softmac_auth_queue_item), GFP_KERNEL);
- if(auth == NULL)
- return -ENOMEM;
-
- auth->net = net;
- auth->mac = mac;
- auth->retry = IEEE80211SOFTMAC_AUTH_RETRY_LIMIT;
- auth->state = IEEE80211SOFTMAC_AUTH_OPEN_REQUEST;
- INIT_DELAYED_WORK(&auth->work, ieee80211softmac_auth_queue);
-
- /* Lock (for list) */
- spin_lock_irqsave(&mac->lock, flags);
-
- /* add to list */
- list_add_tail(&auth->list, &mac->auth_queue);
- queue_delayed_work(mac->wq, &auth->work, 0);
- spin_unlock_irqrestore(&mac->lock, flags);
-
- return 0;
-}
-
-
-/* Sends an auth request to the desired AP and handles timeouts */
-static void
-ieee80211softmac_auth_queue(struct work_struct *work)
-{
- struct ieee80211softmac_device *mac;
- struct ieee80211softmac_auth_queue_item *auth;
- struct ieee80211softmac_network *net;
- unsigned long flags;
- DECLARE_MAC_BUF(mac2);
-
- auth = container_of(work, struct ieee80211softmac_auth_queue_item,
- work.work);
- net = auth->net;
- mac = auth->mac;
-
- if(auth->retry > 0) {
- /* Switch to correct channel for this network */
- mac->set_channel(mac->dev, net->channel);
-
- /* Lock and set flags */
- spin_lock_irqsave(&mac->lock, flags);
- if (unlikely(!mac->running)) {
- /* Prevent reschedule on workqueue flush */
- spin_unlock_irqrestore(&mac->lock, flags);
- return;
- }
- net->authenticated = 0;
- /* add a timeout call so we eventually give up waiting for an auth reply */
- queue_delayed_work(mac->wq, &auth->work, IEEE80211SOFTMAC_AUTH_TIMEOUT);
- auth->retry--;
- spin_unlock_irqrestore(&mac->lock, flags);
- if (ieee80211softmac_send_mgt_frame(mac, auth->net, IEEE80211_STYPE_AUTH, auth->state))
- dprintk(KERN_NOTICE PFX "Sending Authentication Request to %s failed (this shouldn't happen, wait for the timeout).\n",
- print_mac(mac2, net->bssid));
- else
- dprintk(KERN_NOTICE PFX "Sent Authentication Request to %s.\n", print_mac(mac2, net->bssid));
- return;
- }
-
- printkl(KERN_WARNING PFX "Authentication timed out with %s\n", print_mac(mac2, net->bssid));
- /* Remove this item from the queue */
- spin_lock_irqsave(&mac->lock, flags);
- net->authenticating = 0;
- ieee80211softmac_call_events_locked(mac, IEEE80211SOFTMAC_EVENT_AUTH_TIMEOUT, net);
- cancel_delayed_work(&auth->work); /* just to make sure... */
- list_del(&auth->list);
- spin_unlock_irqrestore(&mac->lock, flags);
- /* Free it */
- kfree(auth);
-}
-
-/* Sends a response to an auth challenge (for shared key auth). */
-static void
-ieee80211softmac_auth_challenge_response(struct work_struct *work)
-{
- struct ieee80211softmac_auth_queue_item *aq =
- container_of(work, struct ieee80211softmac_auth_queue_item,
- work.work);
-
- /* Send our response */
- ieee80211softmac_send_mgt_frame(aq->mac, aq->net, IEEE80211_STYPE_AUTH, aq->state);
-}
-
-/* Handle the auth response from the AP
- * This should be registered with ieee80211 as handle_auth
- */
-int
-ieee80211softmac_auth_resp(struct net_device *dev, struct ieee80211_auth *auth)
-{
-
- struct list_head *list_ptr;
- struct ieee80211softmac_device *mac = ieee80211_priv(dev);
- struct ieee80211softmac_auth_queue_item *aq = NULL;
- struct ieee80211softmac_network *net = NULL;
- unsigned long flags;
- u8 * data;
- DECLARE_MAC_BUF(mac2);
-
- if (unlikely(!mac->running))
- return -ENODEV;
-
- /* Find correct auth queue item */
- spin_lock_irqsave(&mac->lock, flags);
- list_for_each(list_ptr, &mac->auth_queue) {
- aq = list_entry(list_ptr, struct ieee80211softmac_auth_queue_item, list);
- net = aq->net;
- if (!memcmp(net->bssid, auth->header.addr2, ETH_ALEN))
- break;
- else
- aq = NULL;
- }
- spin_unlock_irqrestore(&mac->lock, flags);
-
- /* Make sure that we've got an auth queue item for this request */
- if(aq == NULL)
- {
- dprintkl(KERN_DEBUG PFX "Authentication response received from %s but no queue item exists.\n", print_mac(mac2, auth->header.addr2));
- /* Error #? */
- return -1;
- }
-
- /* Check for out of order authentication */
- if(!net->authenticating)
- {
- dprintkl(KERN_DEBUG PFX "Authentication response received from %s but did not request authentication.\n",print_mac(mac2, auth->header.addr2));
- return -1;
- }
-
- /* Parse the auth packet */
- switch(le16_to_cpu(auth->algorithm)) {
- case WLAN_AUTH_OPEN:
- /* Check the status code of the response */
-
- switch(le16_to_cpu(auth->status)) {
- case WLAN_STATUS_SUCCESS:
- /* Update the status to Authenticated */
- spin_lock_irqsave(&mac->lock, flags);
- net->authenticating = 0;
- net->authenticated = 1;
- spin_unlock_irqrestore(&mac->lock, flags);
-
- /* Send event */
- printkl(KERN_NOTICE PFX "Open Authentication completed with %s\n", print_mac(mac2, net->bssid));
- ieee80211softmac_call_events(mac, IEEE80211SOFTMAC_EVENT_AUTHENTICATED, net);
- break;
- default:
- /* Lock and reset flags */
- spin_lock_irqsave(&mac->lock, flags);
- net->authenticated = 0;
- net->authenticating = 0;
- spin_unlock_irqrestore(&mac->lock, flags);
-
- printkl(KERN_NOTICE PFX "Open Authentication with %s failed, error code: %i\n",
- print_mac(mac2, net->bssid), le16_to_cpup(&auth->status));
- /* Count the error? */
- break;
- }
- goto free_aq;
- break;
- case WLAN_AUTH_SHARED_KEY:
- /* Figure out where we are in the process */
- switch(le16_to_cpu(auth->transaction)) {
- case IEEE80211SOFTMAC_AUTH_SHARED_CHALLENGE:
- /* Check to make sure we have a challenge IE */
- data = (u8 *)auth->info_element;
- if (*data++ != MFIE_TYPE_CHALLENGE) {
- printkl(KERN_NOTICE PFX "Shared Key Authentication failed due to a missing challenge.\n");
- break;
- }
- /* Save the challenge */
- spin_lock_irqsave(&mac->lock, flags);
- net->challenge_len = *data++;
- if (net->challenge_len > WLAN_AUTH_CHALLENGE_LEN)
- net->challenge_len = WLAN_AUTH_CHALLENGE_LEN;
- kfree(net->challenge);
- net->challenge = kmemdup(data, net->challenge_len,
- GFP_ATOMIC);
- if (net->challenge == NULL) {
- printkl(KERN_NOTICE PFX "Shared Key "
- "Authentication failed due to "
- "memory shortage.\n");
- spin_unlock_irqrestore(&mac->lock, flags);
- break;
- }
- aq->state = IEEE80211SOFTMAC_AUTH_SHARED_RESPONSE;
-
- /* We reuse the work struct from the auth request here.
- * It is safe to do so as each one is per-request, and
- * at this point (dealing with authentication response)
- * we have obviously already sent the initial auth
- * request. */
- cancel_delayed_work(&aq->work);
- INIT_DELAYED_WORK(&aq->work, &ieee80211softmac_auth_challenge_response);
- queue_delayed_work(mac->wq, &aq->work, 0);
- spin_unlock_irqrestore(&mac->lock, flags);
- return 0;
- case IEEE80211SOFTMAC_AUTH_SHARED_PASS:
- kfree(net->challenge);
- net->challenge = NULL;
- net->challenge_len = 0;
- /* Check the status code of the response */
- switch(auth->status) {
- case WLAN_STATUS_SUCCESS:
- /* Update the status to Authenticated */
- spin_lock_irqsave(&mac->lock, flags);
- net->authenticating = 0;
- net->authenticated = 1;
- spin_unlock_irqrestore(&mac->lock, flags);
- printkl(KERN_NOTICE PFX "Shared Key Authentication completed with %s\n",
- print_mac(mac2, net->bssid));
- ieee80211softmac_call_events(mac, IEEE80211SOFTMAC_EVENT_AUTHENTICATED, net);
- break;
- default:
- printkl(KERN_NOTICE PFX "Shared Key Authentication with %s failed, error code: %i\n",
- print_mac(mac2, net->bssid), le16_to_cpup(&auth->status));
- /* Lock and reset flags */
- spin_lock_irqsave(&mac->lock, flags);
- net->authenticating = 0;
- net->authenticated = 0;
- spin_unlock_irqrestore(&mac->lock, flags);
- /* Count the error? */
- break;
- }
- goto free_aq;
- break;
- default:
- printkl(KERN_WARNING PFX "Unhandled Authentication Step: %i\n", auth->transaction);
- break;
- }
- goto free_aq;
- break;
- default:
- /* ERROR */
- goto free_aq;
- break;
- }
- return 0;
-free_aq:
- /* Cancel the timeout */
- spin_lock_irqsave(&mac->lock, flags);
- cancel_delayed_work(&aq->work);
- /* Remove this item from the queue */
- list_del(&aq->list);
- spin_unlock_irqrestore(&mac->lock, flags);
-
- /* Free it */
- kfree(aq);
- return 0;
-}
-
-/*
- * Handle deauthorization
- */
-static void
-ieee80211softmac_deauth_from_net(struct ieee80211softmac_device *mac,
- struct ieee80211softmac_network *net)
-{
- struct ieee80211softmac_auth_queue_item *aq = NULL;
- struct list_head *list_ptr;
- unsigned long flags;
-
- /* deauthentication implies disassociation */
- ieee80211softmac_disassoc(mac);
-
- /* Lock and reset status flags */
- spin_lock_irqsave(&mac->lock, flags);
- net->authenticating = 0;
- net->authenticated = 0;
-
- /* Find correct auth queue item, if it exists */
- list_for_each(list_ptr, &mac->auth_queue) {
- aq = list_entry(list_ptr, struct ieee80211softmac_auth_queue_item, list);
- if (!memcmp(net->bssid, aq->net->bssid, ETH_ALEN))
- break;
- else
- aq = NULL;
- }
-
- /* Cancel pending work */
- if(aq != NULL)
- /* Not entirely safe? What about running work? */
- cancel_delayed_work(&aq->work);
-
- /* Free our network ref */
- ieee80211softmac_del_network_locked(mac, net);
- if(net->challenge != NULL)
- kfree(net->challenge);
- kfree(net);
-
- /* can't transmit data right now... */
- netif_carrier_off(mac->dev);
- spin_unlock_irqrestore(&mac->lock, flags);
-
- ieee80211softmac_try_reassoc(mac);
-}
-
-/*
- * Sends a deauth request to the desired AP
- */
-int
-ieee80211softmac_deauth_req(struct ieee80211softmac_device *mac,
- struct ieee80211softmac_network *net, int reason)
-{
- int ret;
-
- /* Make sure the network is authenticated */
- if (!net->authenticated)
- {
- dprintkl(KERN_DEBUG PFX "Can't send deauthentication packet, network is not authenticated.\n");
- /* Error okay? */
- return -EPERM;
- }
-
- /* Send the de-auth packet */
- if((ret = ieee80211softmac_send_mgt_frame(mac, net, IEEE80211_STYPE_DEAUTH, reason)))
- return ret;
-
- ieee80211softmac_deauth_from_net(mac, net);
- return 0;
-}
-
-/*
- * This should be registered with ieee80211 as handle_deauth
- */
-int
-ieee80211softmac_deauth_resp(struct net_device *dev, struct ieee80211_deauth *deauth)
-{
-
- struct ieee80211softmac_network *net = NULL;
- struct ieee80211softmac_device *mac = ieee80211_priv(dev);
- DECLARE_MAC_BUF(mac2);
-
- if (unlikely(!mac->running))
- return -ENODEV;
-
- if (!deauth) {
- dprintk("deauth without deauth packet. eek!\n");
- return 0;
- }
-
- net = ieee80211softmac_get_network_by_bssid(mac, deauth->header.addr2);
-
- if (net == NULL) {
- dprintkl(KERN_DEBUG PFX "Received deauthentication packet from %s, but that network is unknown.\n",
- print_mac(mac2, deauth->header.addr2));
- return 0;
- }
-
- /* Make sure the network is authenticated */
- if(!net->authenticated)
- {
- dprintkl(KERN_DEBUG PFX "Can't perform deauthentication, network is not authenticated.\n");
- /* Error okay? */
- return -EPERM;
- }
-
- ieee80211softmac_deauth_from_net(mac, net);
-
- /* let's try to re-associate */
- queue_delayed_work(mac->wq, &mac->associnfo.work, 0);
- return 0;
-}
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