105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
/*
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* BSS list
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* Copyright (c) 2010, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#include "utils/includes.h"
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#include "utils/common.h"
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#include "common/ieee802_11_common.h"
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#include "wlantest.h"
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struct wlantest_bss * bss_get(struct wlantest *wt, const u8 *bssid)
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{
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struct wlantest_bss *bss;
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if (bssid[0] & 0x01)
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return NULL; /* Skip group addressed frames */
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dl_list_for_each(bss, &wt->bss, struct wlantest_bss, list) {
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if (os_memcmp(bss->bssid, bssid, ETH_ALEN) == 0)
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return bss;
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}
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bss = os_zalloc(sizeof(*bss));
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if (bss == NULL)
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return NULL;
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dl_list_init(&bss->sta);
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os_memcpy(bss->bssid, bssid, ETH_ALEN);
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dl_list_add(&wt->bss, &bss->list);
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wpa_printf(MSG_DEBUG, "Discovered new BSS - " MACSTR,
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MAC2STR(bss->bssid));
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return bss;
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}
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void bss_deinit(struct wlantest_bss *bss)
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{
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struct wlantest_sta *sta, *n;
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dl_list_for_each_safe(sta, n, &bss->sta, struct wlantest_sta, list)
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sta_deinit(sta);
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dl_list_del(&bss->list);
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os_free(bss);
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}
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void bss_update(struct wlantest_bss *bss, struct ieee802_11_elems *elems)
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{
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if (elems->ssid == NULL || elems->ssid_len > 32) {
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wpa_printf(MSG_INFO, "Invalid or missing SSID in a Beacon "
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"frame for " MACSTR, MAC2STR(bss->bssid));
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bss->parse_error_reported = 1;
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return;
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}
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os_memcpy(bss->ssid, elems->ssid, elems->ssid_len);
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bss->ssid_len = elems->ssid_len;
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if (elems->rsn_ie == NULL) {
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if (bss->rsnie[0]) {
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wpa_printf(MSG_INFO, "BSS " MACSTR " - RSN IE removed",
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MAC2STR(bss->bssid));
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bss->rsnie[0] = 0;
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}
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} else {
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if (bss->rsnie[0] == 0 ||
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os_memcmp(bss->rsnie, elems->rsn_ie - 2,
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elems->rsn_ie_len + 2) != 0) {
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wpa_printf(MSG_INFO, "BSS " MACSTR " - RSN IE "
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"stored", MAC2STR(bss->bssid));
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wpa_hexdump(MSG_DEBUG, "RSN IE", elems->rsn_ie - 2,
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elems->rsn_ie_len + 2);
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}
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os_memcpy(bss->rsnie, elems->rsn_ie - 2,
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elems->rsn_ie_len + 2);
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}
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if (elems->wpa_ie == NULL) {
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if (bss->wpaie[0]) {
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wpa_printf(MSG_INFO, "BSS " MACSTR " - WPA IE removed",
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MAC2STR(bss->bssid));
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bss->wpaie[0] = 0;
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}
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} else {
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if (bss->wpaie[0] == 0 ||
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os_memcmp(bss->wpaie, elems->wpa_ie - 2,
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elems->wpa_ie_len + 2) != 0) {
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wpa_printf(MSG_INFO, "BSS " MACSTR " - WPA IE "
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"stored", MAC2STR(bss->bssid));
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wpa_hexdump(MSG_DEBUG, "WPA IE", elems->wpa_ie - 2,
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elems->wpa_ie_len + 2);
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}
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os_memcpy(bss->wpaie, elems->wpa_ie - 2,
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elems->wpa_ie_len + 2);
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}
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}
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