/*
* BSS table
- * Copyright (c) 2009-2015, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2009-2019, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
#include "utils/eloop.h"
#include "common/ieee802_11_defs.h"
#include "drivers/driver.h"
+#include "eap_peer/eap.h"
#include "wpa_supplicant_i.h"
#include "config.h"
#include "notify.h"
#include "bss.h"
-/**
- * WPA_BSS_EXPIRATION_PERIOD - Period of expiration run in seconds
- */
-#define WPA_BSS_EXPIRATION_PERIOD 10
-
#define WPA_BSS_FREQ_CHANGED_FLAG BIT(0)
#define WPA_BSS_SIGNAL_CHANGED_FLAG BIT(1)
#define WPA_BSS_PRIVACY_CHANGED_FLAG BIT(2)
anqp = os_zalloc(sizeof(*anqp));
if (anqp == NULL)
return NULL;
+#ifdef CONFIG_INTERWORKING
+ dl_list_init(&anqp->anqp_elems);
+#endif /* CONFIG_INTERWORKING */
anqp->users = 1;
return anqp;
}
#define ANQP_DUP(f) if (anqp->f) n->f = wpabuf_dup(anqp->f)
#ifdef CONFIG_INTERWORKING
+ dl_list_init(&n->anqp_elems);
ANQP_DUP(capability_list);
ANQP_DUP(venue_name);
ANQP_DUP(network_auth_type);
ANQP_DUP(nai_realm);
ANQP_DUP(anqp_3gpp);
ANQP_DUP(domain_name);
+ ANQP_DUP(fils_realm_info);
#endif /* CONFIG_INTERWORKING */
#ifdef CONFIG_HS20
ANQP_DUP(hs20_capability_list);
ANQP_DUP(hs20_connection_capability);
ANQP_DUP(hs20_operating_class);
ANQP_DUP(hs20_osu_providers_list);
+ ANQP_DUP(hs20_operator_icon_metadata);
+ ANQP_DUP(hs20_osu_providers_nai_list);
#endif /* CONFIG_HS20 */
#undef ANQP_DUP
*/
static void wpa_bss_anqp_free(struct wpa_bss_anqp *anqp)
{
+#ifdef CONFIG_INTERWORKING
+ struct wpa_bss_anqp_elem *elem;
+#endif /* CONFIG_INTERWORKING */
+
if (anqp == NULL)
return;
wpabuf_free(anqp->nai_realm);
wpabuf_free(anqp->anqp_3gpp);
wpabuf_free(anqp->domain_name);
+ wpabuf_free(anqp->fils_realm_info);
+
+ while ((elem = dl_list_first(&anqp->anqp_elems,
+ struct wpa_bss_anqp_elem, list))) {
+ dl_list_del(&elem->list);
+ wpabuf_free(elem->payload);
+ os_free(elem);
+ }
#endif /* CONFIG_INTERWORKING */
#ifdef CONFIG_HS20
wpabuf_free(anqp->hs20_capability_list);
wpabuf_free(anqp->hs20_connection_capability);
wpabuf_free(anqp->hs20_operating_class);
wpabuf_free(anqp->hs20_osu_providers_list);
+ wpabuf_free(anqp->hs20_operator_icon_metadata);
+ wpabuf_free(anqp->hs20_osu_providers_nai_list);
#endif /* CONFIG_HS20 */
os_free(anqp);
}
-static void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
- const char *reason)
+void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
+ const char *reason)
{
if (wpa_s->last_scan_res) {
unsigned int i;
}
-static void calculate_update_time(const struct os_reltime *fetch_time,
- unsigned int age_ms,
- struct os_reltime *update_time)
+void calculate_update_time(const struct os_reltime *fetch_time,
+ unsigned int age_ms,
+ struct os_reltime *update_time)
{
os_time_t usec;
}
+static int wpa_bss_is_wps_candidate(struct wpa_supplicant *wpa_s,
+ struct wpa_bss *bss)
+{
+#ifdef CONFIG_WPS
+ struct wpa_ssid *ssid;
+ struct wpabuf *wps_ie;
+ int pbc = 0, ret;
+
+ wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
+ if (!wps_ie)
+ return 0;
+
+ if (wps_is_selected_pbc_registrar(wps_ie)) {
+ pbc = 1;
+ } else if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
+ wpabuf_free(wps_ie);
+ return 0;
+ }
+
+ for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
+ if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
+ continue;
+ if (ssid->ssid_len &&
+ (ssid->ssid_len != bss->ssid_len ||
+ os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) != 0))
+ continue;
+
+ if (pbc)
+ ret = eap_is_wps_pbc_enrollee(&ssid->eap);
+ else
+ ret = eap_is_wps_pin_enrollee(&ssid->eap);
+ wpabuf_free(wps_ie);
+ return ret;
+ }
+ wpabuf_free(wps_ie);
+#endif /* CONFIG_WPS */
+
+ return 0;
+}
+
+
static int wpa_bss_known(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
{
struct wpa_ssid *ssid;
static int wpa_bss_in_use(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
{
- return bss == wpa_s->current_bss ||
- (!is_zero_ether_addr(bss->bssid) &&
- (os_memcmp(bss->bssid, wpa_s->bssid, ETH_ALEN) == 0 ||
- os_memcmp(bss->bssid, wpa_s->pending_bssid, ETH_ALEN) == 0));
+ if (bss == wpa_s->current_bss)
+ return 1;
+
+ if (wpa_s->current_bss &&
+ (bss->ssid_len != wpa_s->current_bss->ssid_len ||
+ os_memcmp(bss->ssid, wpa_s->current_bss->ssid,
+ bss->ssid_len) != 0))
+ return 0; /* SSID has changed */
+
+ return !is_zero_ether_addr(bss->bssid) &&
+ (os_memcmp(bss->bssid, wpa_s->bssid, ETH_ALEN) == 0 ||
+ os_memcmp(bss->bssid, wpa_s->pending_bssid, ETH_ALEN) == 0);
}
struct wpa_bss *bss;
dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
- if (!wpa_bss_known(wpa_s, bss)) {
+ if (!wpa_bss_known(wpa_s, bss) &&
+ !wpa_bss_is_wps_candidate(wpa_s, bss)) {
wpa_bss_remove(wpa_s, bss, __func__);
return 0;
}
struct os_reltime *fetch_time)
{
struct wpa_bss *bss;
+ char extra[50];
bss = os_zalloc(sizeof(*bss) + res->ie_len + res->beacon_ie_len);
if (bss == NULL)
dl_list_add_tail(&wpa_s->bss, &bss->list);
dl_list_add_tail(&wpa_s->bss_id, &bss->list_id);
wpa_s->num_bss++;
+ if (!is_zero_ether_addr(bss->hessid))
+ os_snprintf(extra, sizeof(extra), " HESSID " MACSTR,
+ MAC2STR(bss->hessid));
+ else
+ extra[0] = '\0';
wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Add new id %u BSSID " MACSTR
- " SSID '%s'",
- bss->id, MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
+ " SSID '%s' freq %d%s",
+ bss->id, MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len),
+ bss->freq, extra);
wpas_notify_bss_added(wpa_s, bss->bssid, bss->id);
return bss;
}
{
u32 changes;
+ if (bss->last_update_idx == wpa_s->bss_update_idx) {
+ struct os_reltime update_time;
+
+ /*
+ * Some drivers (e.g., cfg80211) include multiple BSS entries
+ * for the same BSS if that BSS's channel changes. The BSS list
+ * implementation in wpa_supplicant does not do that and we need
+ * to filter out the obsolete results here to make sure only the
+ * most current BSS information remains in the table.
+ */
+ wpa_printf(MSG_DEBUG, "BSS: " MACSTR
+ " has multiple entries in the scan results - select the most current one",
+ MAC2STR(bss->bssid));
+ calculate_update_time(fetch_time, res->age, &update_time);
+ wpa_printf(MSG_DEBUG,
+ "Previous last_update: %u.%06u (freq %d%s)",
+ (unsigned int) bss->last_update.sec,
+ (unsigned int) bss->last_update.usec,
+ bss->freq,
+ (bss->flags & WPA_BSS_ASSOCIATED) ? " assoc" : "");
+ wpa_printf(MSG_DEBUG, "New last_update: %u.%06u (freq %d%s)",
+ (unsigned int) update_time.sec,
+ (unsigned int) update_time.usec,
+ res->freq,
+ (res->flags & WPA_SCAN_ASSOCIATED) ? " assoc" : "");
+ if ((bss->flags & WPA_BSS_ASSOCIATED) ||
+ (!(res->flags & WPA_SCAN_ASSOCIATED) &&
+ !os_reltime_before(&bss->last_update, &update_time))) {
+ wpa_printf(MSG_DEBUG,
+ "Ignore this BSS entry since the previous update looks more current");
+ return bss;
+ }
+ wpa_printf(MSG_DEBUG,
+ "Accept this BSS entry since it looks more current than the previous update");
+ }
+
changes = wpa_bss_compare_res(bss, res);
+ if (changes & WPA_BSS_FREQ_CHANGED_FLAG)
+ wpa_printf(MSG_DEBUG, "BSS: " MACSTR " changed freq %d --> %d",
+ MAC2STR(bss->bssid), bss->freq, res->freq);
bss->scan_miss_count = 0;
bss->last_update_idx = wpa_s->bss_update_idx;
wpa_bss_copy_res(bss, res, fetch_time);
struct wpa_bss *bss, *n;
os_get_reltime(&wpa_s->last_scan);
- if (!new_scan)
+ if ((info && info->aborted) || !new_scan)
return; /* do not expire entries without new scan */
dl_list_for_each_safe(bss, n, &wpa_s->bss, struct wpa_bss, list) {
}
-static void wpa_bss_timeout(void *eloop_ctx, void *timeout_ctx)
-{
- struct wpa_supplicant *wpa_s = eloop_ctx;
-
- wpa_bss_flush_by_age(wpa_s, wpa_s->conf->bss_expiration_age);
- eloop_register_timeout(WPA_BSS_EXPIRATION_PERIOD, 0,
- wpa_bss_timeout, wpa_s, NULL);
-}
-
-
/**
* wpa_bss_init - Initialize BSS table
* @wpa_s: Pointer to wpa_supplicant data
{
dl_list_init(&wpa_s->bss);
dl_list_init(&wpa_s->bss_id);
- eloop_register_timeout(WPA_BSS_EXPIRATION_PERIOD, 0,
- wpa_bss_timeout, wpa_s, NULL);
return 0;
}
*/
void wpa_bss_deinit(struct wpa_supplicant *wpa_s)
{
- eloop_cancel_timeout(wpa_bss_timeout, wpa_s, NULL);
wpa_bss_flush(wpa_s);
}
*/
const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie)
{
- const u8 *end, *pos;
-
- pos = (const u8 *) (bss + 1);
- end = pos + bss->ie_len;
-
- while (pos + 1 < end) {
- if (pos + 2 + pos[1] > end)
- break;
- if (pos[0] == ie)
- return pos;
- pos += 2 + pos[1];
- }
-
- return NULL;
+ return get_ie((const u8 *) (bss + 1), bss->ie_len, ie);
}
pos = (const u8 *) (bss + 1);
end = pos + bss->ie_len;
- while (pos + 1 < end) {
- if (pos + 2 + pos[1] > end)
+ while (end - pos > 1) {
+ if (2 + pos[1] > end - pos)
break;
if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
vendor_type == WPA_GET_BE32(&pos[2]))
pos += bss->ie_len;
end = pos + bss->beacon_ie_len;
- while (pos + 1 < end) {
- if (pos + 2 + pos[1] > end)
+ while (end - pos > 1) {
+ if (2 + pos[1] > end - pos)
break;
if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
vendor_type == WPA_GET_BE32(&pos[2]))
pos = (const u8 *) (bss + 1);
end = pos + bss->ie_len;
- while (pos + 1 < end) {
- if (pos + 2 + pos[1] > end)
+ while (end - pos > 1) {
+ if (2 + pos[1] > end - pos)
break;
if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
vendor_type == WPA_GET_BE32(&pos[2]))
pos += bss->ie_len;
end = pos + bss->beacon_ie_len;
- while (pos + 1 < end) {
- if (pos + 2 + pos[1] > end)
+ while (end - pos > 1) {
+ if (2 + pos[1] > end - pos)
break;
if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
vendor_type == WPA_GET_BE32(&pos[2]))
*rates = r;
return len;
}
+
+
+#ifdef CONFIG_FILS
+const u8 * wpa_bss_get_fils_cache_id(struct wpa_bss *bss)
+{
+ const u8 *ie;
+
+ if (bss) {
+ ie = wpa_bss_get_ie(bss, WLAN_EID_FILS_INDICATION);
+ if (ie && ie[1] >= 4 && WPA_GET_LE16(ie + 2) & BIT(7))
+ return ie + 4;
+ }
+
+ return NULL;
+}
+#endif /* CONFIG_FILS */
+
+
+int wpa_bss_ext_capab(const struct wpa_bss *bss, unsigned int capab)
+{
+ return ieee802_11_ext_capab(wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB),
+ capab);
+}
projects / thirdparty / hostap.git / blobdiff