mirror of
https://github.com/vanhoefm/fragattacks.git
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451a27b1ad
Add a configuration option in hostapd.conf and in neighbor report that sets an AP as stationary. To enable this option on the current AP set the config option stationary_ap to 1. To set a neighbor entry to be marked as stationary add the word stat to the SET_NEIGHBOR command. This option tells hostapd to send LCI data even if it is older than requested by max age subelement in RRM request. Signed-off-by: David Spinadel <david.spinadel@intel.com>
137 lines
2.9 KiB
C
137 lines
2.9 KiB
C
/*
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* hostapd / Neighboring APs DB
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* Copyright(c) 2013 - 2016 Intel Mobile Communications GmbH.
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* Copyright(c) 2011 - 2016 Intel Corporation. All rights reserved.
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*
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* This software may be distributed under the terms of the BSD license.
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* See README 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 "hostapd.h"
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#include "neighbor_db.h"
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struct hostapd_neighbor_entry *
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hostapd_neighbor_get(struct hostapd_data *hapd, const u8 *bssid,
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const struct wpa_ssid_value *ssid)
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{
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struct hostapd_neighbor_entry *nr;
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dl_list_for_each(nr, &hapd->nr_db, struct hostapd_neighbor_entry,
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list) {
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if (os_memcmp(bssid, nr->bssid, ETH_ALEN) == 0 &&
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(!ssid ||
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(ssid->ssid_len == nr->ssid.ssid_len &&
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os_memcmp(ssid->ssid, nr->ssid.ssid,
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ssid->ssid_len) == 0)))
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return nr;
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}
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return NULL;
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}
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static void hostapd_neighbor_clear_entry(struct hostapd_neighbor_entry *nr)
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{
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wpabuf_free(nr->nr);
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nr->nr = NULL;
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wpabuf_free(nr->lci);
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nr->lci = NULL;
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wpabuf_free(nr->civic);
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nr->civic = NULL;
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os_memset(nr->bssid, 0, sizeof(nr->bssid));
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os_memset(&nr->ssid, 0, sizeof(nr->ssid));
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nr->stationary = 0;
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}
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static struct hostapd_neighbor_entry *
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hostapd_neighbor_add(struct hostapd_data *hapd)
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{
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struct hostapd_neighbor_entry *nr;
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nr = os_zalloc(sizeof(struct hostapd_neighbor_entry));
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if (!nr)
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return NULL;
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dl_list_add(&hapd->nr_db, &nr->list);
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return nr;
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}
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int hostapd_neighbor_set(struct hostapd_data *hapd, const u8 *bssid,
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const struct wpa_ssid_value *ssid,
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const struct wpabuf *nr, const struct wpabuf *lci,
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const struct wpabuf *civic, int stationary)
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{
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struct hostapd_neighbor_entry *entry;
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entry = hostapd_neighbor_get(hapd, bssid, ssid);
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if (!entry)
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entry = hostapd_neighbor_add(hapd);
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if (!entry)
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return -1;
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hostapd_neighbor_clear_entry(entry);
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os_memcpy(entry->bssid, bssid, ETH_ALEN);
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os_memcpy(&entry->ssid, ssid, sizeof(entry->ssid));
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entry->nr = wpabuf_dup(nr);
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if (!entry->nr)
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goto fail;
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if (lci && wpabuf_len(lci)) {
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entry->lci = wpabuf_dup(lci);
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if (!entry->lci || os_get_time(&entry->lci_date))
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goto fail;
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}
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if (civic && wpabuf_len(civic)) {
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entry->civic = wpabuf_dup(civic);
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if (!entry->civic)
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goto fail;
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}
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entry->stationary = stationary;
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return 0;
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fail:
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hostapd_neighbor_remove(hapd, bssid, ssid);
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return -1;
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}
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int hostapd_neighbor_remove(struct hostapd_data *hapd, const u8 *bssid,
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const struct wpa_ssid_value *ssid)
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{
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struct hostapd_neighbor_entry *nr;
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nr = hostapd_neighbor_get(hapd, bssid, ssid);
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if (!nr)
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return -1;
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hostapd_neighbor_clear_entry(nr);
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dl_list_del(&nr->list);
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os_free(nr);
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return 0;
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}
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void hostpad_free_neighbor_db(struct hostapd_data *hapd)
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{
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struct hostapd_neighbor_entry *nr, *prev;
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dl_list_for_each_safe(nr, prev, &hapd->nr_db,
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struct hostapd_neighbor_entry, list) {
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hostapd_neighbor_clear_entry(nr);
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dl_list_del(&nr->list);
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os_free(nr);
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}
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}
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