Line data    Source code

       1             : /*
       2             :  * AP mode helper functions
       3             :  * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
       4             :  *
       5             :  * This software may be distributed under the terms of the BSD license.
       6             :  * See README for more details.
       7             :  */
       8             : 
       9             : #include "includes.h"
      10             : 
      11             : #include "common.h"
      12             : #include "common/ieee802_11_defs.h"
      13             : #include "sta_info.h"
      14             : #include "hostapd.h"
      15             : 
      16             : 
      17         556 : int hostapd_register_probereq_cb(struct hostapd_data *hapd,
      18             :                                  int (*cb)(void *ctx, const u8 *sa,
      19             :                                            const u8 *da, const u8 *bssid,
      20             :                                            const u8 *ie, size_t ie_len,
      21             :                                            int ssi_signal),
      22             :                                  void *ctx)
      23             : {
      24             :         struct hostapd_probereq_cb *n;
      25             : 
      26         556 :         n = os_realloc_array(hapd->probereq_cb, hapd->num_probereq_cb + 1,
      27             :                              sizeof(struct hostapd_probereq_cb));
      28         556 :         if (n == NULL)
      29           0 :                 return -1;
      30             : 
      31         556 :         hapd->probereq_cb = n;
      32         556 :         n = &hapd->probereq_cb[hapd->num_probereq_cb];
      33         556 :         hapd->num_probereq_cb++;
      34             : 
      35         556 :         n->cb = cb;
      36         556 :         n->ctx = ctx;
      37             : 
      38         556 :         return 0;
      39             : }
      40             : 
      41             : 
      42             : struct prune_data {
      43             :         struct hostapd_data *hapd;
      44             :         const u8 *addr;
      45             : };
      46             : 
      47        2475 : static int prune_associations(struct hostapd_iface *iface, void *ctx)
      48             : {
      49        2475 :         struct prune_data *data = ctx;
      50             :         struct sta_info *osta;
      51             :         struct hostapd_data *ohapd;
      52             :         size_t j;
      53             : 
      54        5176 :         for (j = 0; j < iface->num_bss; j++) {
      55        2701 :                 ohapd = iface->bss[j];
      56        2701 :                 if (ohapd == data->hapd)
      57        2072 :                         continue;
      58         629 :                 osta = ap_get_sta(ohapd, data->addr);
      59         629 :                 if (!osta)
      60         371 :                         continue;
      61             : 
      62         258 :                 ap_sta_disassociate(ohapd, osta, WLAN_REASON_UNSPECIFIED);
      63             :         }
      64             : 
      65        2475 :         return 0;
      66             : }
      67             : 
      68             : /**
      69             :  * hostapd_prune_associations - Remove extraneous associations
      70             :  * @hapd: Pointer to BSS data for the most recent association
      71             :  * @addr: Associated STA address
      72             :  *
      73             :  * This function looks through all radios and BSS's for previous
      74             :  * (stale) associations of STA. If any are found they are removed.
      75             :  */
      76        2462 : void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr)
      77             : {
      78             :         struct prune_data data;
      79        2462 :         data.hapd = hapd;
      80        2462 :         data.addr = addr;
      81        4534 :         if (hapd->iface->interfaces &&
      82        2072 :             hapd->iface->interfaces->for_each_interface)
      83        4144 :                 hapd->iface->interfaces->for_each_interface(
      84        2072 :                         hapd->iface->interfaces, prune_associations, &data);
      85        2462 : }