utils.c

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/*
 * AP mode helper functions
 * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING for more details.
 */

#include "includes.h"

#include "common.h"
#include "common/ieee802_11_defs.h"
#include "sta_info.h"
#include "hostapd.h"


int hostapd_register_probereq_cb(struct hostapd_data *hapd,
                                 int (*cb)(void *ctx, const u8 *sa,
                                           const u8 *ie, size_t ie_len),
                                 void *ctx)
{
        struct hostapd_probereq_cb *n;

        n = os_realloc(hapd->probereq_cb, (hapd->num_probereq_cb + 1) *
                       sizeof(struct hostapd_probereq_cb));
        if (n == NULL)
                return -1;

        hapd->probereq_cb = n;
        n = &hapd->probereq_cb[hapd->num_probereq_cb];
        hapd->num_probereq_cb++;

        n->cb = cb;
        n->ctx = ctx;

        return 0;
}


struct prune_data {
        struct hostapd_data *hapd;
        const u8 *addr;
};

static int prune_associations(struct hostapd_iface *iface, void *ctx)
{
        struct prune_data *data = ctx;
        struct sta_info *osta;
        struct hostapd_data *ohapd;
        size_t j;

        for (j = 0; j < iface->num_bss; j++) {
                ohapd = iface->bss[j];
                if (ohapd == data->hapd)
                        continue;
                osta = ap_get_sta(ohapd, data->addr);
                if (!osta)
                        continue;

                ap_sta_disassociate(ohapd, osta, WLAN_REASON_UNSPECIFIED);
        }

        return 0;
}

void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr)
{
        struct prune_data data;
        data.hapd = hapd;
        data.addr = addr;
        if (hapd->iface->for_each_interface)
                hapd->iface->for_each_interface(hapd->iface->interfaces,
                                                prune_associations, &data);
}