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/*
* hostapd / Neighboring APs DB
* Copyright(c) 2013 - 2016 Intel Mobile Communications GmbH.
* Copyright(c) 2011 - 2016 Intel Corporation. All rights reserved.
*
* 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 "hostapd.h"
#include "neighbor_db.h"
struct hostapd_neighbor_entry *
hostapd_neighbor_get(struct hostapd_data *hapd, const u8 *bssid,
const struct wpa_ssid_value *ssid)
{
struct hostapd_neighbor_entry *nr;
dl_list_for_each(nr, &hapd->nr_db, struct hostapd_neighbor_entry,
list) {
if (os_memcmp(bssid, nr->bssid, ETH_ALEN) == 0 &&
(!ssid ||
(ssid->ssid_len == nr->ssid.ssid_len &&
os_memcmp(ssid->ssid, nr->ssid.ssid,
ssid->ssid_len) == 0)))
return nr;
}
return NULL;
}
static void hostapd_neighbor_clear_entry(struct hostapd_neighbor_entry *nr)
{
wpabuf_free(nr->nr);
nr->nr = NULL;
wpabuf_free(nr->lci);
nr->lci = NULL;
wpabuf_free(nr->civic);
nr->civic = NULL;
os_memset(nr->bssid, 0, sizeof(nr->bssid));
os_memset(&nr->ssid, 0, sizeof(nr->ssid));
}
static struct hostapd_neighbor_entry *
hostapd_neighbor_add(struct hostapd_data *hapd)
{
struct hostapd_neighbor_entry *nr;
nr = os_zalloc(sizeof(struct hostapd_neighbor_entry));
if (!nr)
return NULL;
dl_list_add(&hapd->nr_db, &nr->list);
return nr;
}
int hostapd_neighbor_set(struct hostapd_data *hapd, const u8 *bssid,
const struct wpa_ssid_value *ssid,
const struct wpabuf *nr, const struct wpabuf *lci,
const struct wpabuf *civic)
{
struct hostapd_neighbor_entry *entry;
entry = hostapd_neighbor_get(hapd, bssid, ssid);
if (!entry)
entry = hostapd_neighbor_add(hapd);
if (!entry)
return -1;
hostapd_neighbor_clear_entry(entry);
os_memcpy(entry->bssid, bssid, ETH_ALEN);
os_memcpy(&entry->ssid, ssid, sizeof(entry->ssid));
entry->nr = wpabuf_dup(nr);
if (!entry->nr)
goto fail;
if (lci) {
entry->lci = wpabuf_dup(lci);
if (!entry->lci || os_get_time(&entry->lci_date))
goto fail;
}
if (civic) {
entry->civic = wpabuf_dup(civic);
if (!entry->civic)
goto fail;
}
return 0;
fail:
hostapd_neighbor_remove(hapd, bssid, ssid);
return -1;
}
int hostapd_neighbor_remove(struct hostapd_data *hapd, const u8 *bssid,
const struct wpa_ssid_value *ssid)
{
struct hostapd_neighbor_entry *nr;
nr = hostapd_neighbor_get(hapd, bssid, ssid);
if (!nr)
return -1;
hostapd_neighbor_clear_entry(nr);
dl_list_del(&nr->list);
os_free(nr);
return 0;
}
void hostpad_free_neighbor_db(struct hostapd_data *hapd)
{
struct hostapd_neighbor_entry *nr, *prev;
dl_list_for_each_safe(nr, prev, &hapd->nr_db,
struct hostapd_neighbor_entry, list) {
hostapd_neighbor_clear_entry(nr);
dl_list_del(&nr->list);
os_free(nr);
}
}
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