/*

 * hostapd / IEEE 802.11 MLME

 * Copyright 2003-2006, Jouni Malinen <j@w1.fi>

 * Copyright 2003-2004, Instant802 Networks, Inc.

 * Copyright 2005-2006, Devicescape Software, Inc.

 *

 * This software may be distributed under the terms of the BSD license.

 * See README for more details.

 */

#include "utils/includes.h"

#include "utils/common.h"

#include "common/ieee802_11_defs.h"

#include "ieee802_11.h"

#include "wpa_auth.h"

#include "sta_info.h"

#include "ap_mlme.h"

#include "hostapd.h"

#ifndef CONFIG_NO_HOSTAPD_LOGGER

static const char * mlme_auth_alg_str(int alg)

{

  switch (alg) {

  case WLAN_AUTH_OPEN:

    return "OPEN_SYSTEM";

  case WLAN_AUTH_SHARED_KEY:

    return "SHARED_KEY";

  case WLAN_AUTH_FT:

    return "FT";

  default:

    return "unknown";

  }

}

#endif /* CONFIG_NO_HOSTAPD_LOGGER */

/**

 * mlme_authenticate_indication - Report the establishment of an authentication

 * relationship with a specific peer MAC entity

 * @hapd: BSS data

 * @sta: peer STA data

 *

 * MLME calls this function as a result of the establishment of an

 * authentication relationship with a specific peer MAC entity that

 * resulted from an authentication procedure that was initiated by

 * that specific peer MAC entity.

 *

 * PeerSTAAddress = sta->addr

 * AuthenticationType = sta->auth_alg (WLAN_AUTH_OPEN / WLAN_AUTH_SHARED_KEY)

 */

void mlme_authenticate_indication(struct hostapd_data *hapd,

          struct sta_info *sta)

{

  hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_MLME,

           HOSTAPD_LEVEL_DEBUG,

           "MLME-AUTHENTICATE.indication(" MACSTR ", %s)",

           MAC2STR(sta->addr), mlme_auth_alg_str(sta->auth_alg));

  if (sta->auth_alg != WLAN_AUTH_FT &&

      sta->auth_alg != WLAN_AUTH_FILS_SK &&

      sta->auth_alg != WLAN_AUTH_FILS_SK_PFS &&

      sta->auth_alg != WLAN_AUTH_FILS_PK &&

      !(sta->flags & WLAN_STA_MFP))

    mlme_deletekeys_request(hapd, sta);

  ap_sta_clear_disconnect_timeouts(hapd, sta);

}

/**

 * mlme_deauthenticate_indication - Report the invalidation of an

 * authentication relationship with a specific peer MAC entity

 * @hapd: BSS data

 * @sta: Peer STA data

 * @reason_code: ReasonCode from Deauthentication frame

 *

 * MLME calls this function as a result of the invalidation of an

 * authentication relationship with a specific peer MAC entity.

 *

 * PeerSTAAddress = sta->addr

 */

void mlme_deauthenticate_indication(struct hostapd_data *hapd,

            struct sta_info *sta, u16 reason_code)

{

  hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_MLME,

           HOSTAPD_LEVEL_DEBUG,

           "MLME-DEAUTHENTICATE.indication(" MACSTR ", %d)",

           MAC2STR(sta->addr), reason_code);

  if (!hapd->iface->driver_ap_teardown)

    mlme_deletekeys_request(hapd, sta);

}

/**

 * mlme_associate_indication - Report the establishment of an association with

 * a specific peer MAC entity

 * @hapd: BSS data

 * @sta: peer STA data

 *

 * MLME calls this function as a result of the establishment of an

 * association with a specific peer MAC entity that resulted from an

 * association procedure that was initiated by that specific peer MAC entity.

 *

 * PeerSTAAddress = sta->addr

 */

void mlme_associate_indication(struct hostapd_data *hapd, struct sta_info *sta)

{

  hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_MLME,

           HOSTAPD_LEVEL_DEBUG,

           "MLME-ASSOCIATE.indication(" MACSTR ")",

           MAC2STR(sta->addr));

  if (sta->auth_alg != WLAN_AUTH_FT &&

      sta->auth_alg != WLAN_AUTH_FILS_SK &&

      sta->auth_alg != WLAN_AUTH_FILS_SK_PFS &&

      sta->auth_alg != WLAN_AUTH_FILS_PK &&

      sta->auth_alg != WLAN_AUTH_EPPKE &&

      sta->auth_alg != WLAN_AUTH_802_1X)

    mlme_deletekeys_request(hapd, sta);

  ap_sta_clear_disconnect_timeouts(hapd, sta);

}

/**

 * mlme_reassociate_indication - Report the establishment of an reassociation

 * with a specific peer MAC entity

 * @hapd: BSS data

 * @sta: peer STA data

 *

 * MLME calls this function as a result of the establishment of an

 * reassociation with a specific peer MAC entity that resulted from a

 * reassociation procedure that was initiated by that specific peer MAC entity.

 *

 * PeerSTAAddress = sta->addr

 */

void mlme_reassociate_indication(struct hostapd_data *hapd,

         struct sta_info *sta)

{

  hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_MLME,

           HOSTAPD_LEVEL_DEBUG,

           "MLME-REASSOCIATE.indication(" MACSTR ")",

           MAC2STR(sta->addr));

  if (sta->auth_alg != WLAN_AUTH_FT &&

      sta->auth_alg != WLAN_AUTH_FILS_SK &&

      sta->auth_alg != WLAN_AUTH_FILS_SK_PFS &&

      sta->auth_alg != WLAN_AUTH_FILS_PK &&

      sta->auth_alg != WLAN_AUTH_EPPKE &&

      sta->auth_alg != WLAN_AUTH_802_1X)

    mlme_deletekeys_request(hapd, sta);

  ap_sta_clear_disconnect_timeouts(hapd, sta);

}

/**

 * mlme_disassociate_indication - Report disassociation with a specific peer

 * MAC entity

 * @hapd: BSS data

 * @sta: Peer STA data

 * @reason_code: ReasonCode from Disassociation frame

 *

 * MLME calls this function as a result of the invalidation of an association

 * relationship with a specific peer MAC entity.

 *

 * PeerSTAAddress = sta->addr

 */

void mlme_disassociate_indication(struct hostapd_data *hapd,

          struct sta_info *sta, u16 reason_code)

{

  hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_MLME,

           HOSTAPD_LEVEL_DEBUG,

           "MLME-DISASSOCIATE.indication(" MACSTR ", %d)",

           MAC2STR(sta->addr), reason_code);

  mlme_deletekeys_request(hapd, sta);

}

void mlme_michaelmicfailure_indication(struct hostapd_data *hapd,

               const u8 *addr)

{

  hostapd_logger(hapd, addr, HOSTAPD_MODULE_MLME,

           HOSTAPD_LEVEL_DEBUG,

           "MLME-MichaelMICFailure.indication(" MACSTR ")",

           MAC2STR(addr));

}

void mlme_deletekeys_request(struct hostapd_data *hapd, struct sta_info *sta)

{

  hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_MLME,

           HOSTAPD_LEVEL_DEBUG,

           "MLME-DELETEKEYS.request(" MACSTR ")",

           MAC2STR(sta->addr));

  if (sta->wpa_sm)

    wpa_remove_ptk(sta->wpa_sm);

}