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hostap/wpa_supplicant/events.c
Jouni Malinen 3c73811507 OWE: Mark BSS for transition mode based on active OWE network profiles 
It is possible for the hidden OWE BSS to be found based on SSID-specific
scan (e.g., from the special OWE scan mechanism). In that sequence, the
previously used learning of OWE BSS was skipped since the SSID was
already present in the BSS entry. This could result in not being able to
find a matching BSS entry for the OWE BSS in transition mode.

Fix this by adding the BSS flag for transition mode based on SSID
matching against currently enabled OWE network profiles in addition to
the previous mechanism.

Signed-off-by: Jouni Malinen <j@w1.fi>
2020-03-08 16:16:11 +02:00

5259 lines
143 KiB
C
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/*
* WPA Supplicant - Driver event processing
* Copyright (c) 2003-2019, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#include "common.h"
#include "eapol_supp/eapol_supp_sm.h"
#include "rsn_supp/wpa.h"
#include "eloop.h"
#include "config.h"
#include "l2_packet/l2_packet.h"
#include "wpa_supplicant_i.h"
#include "driver_i.h"
#include "pcsc_funcs.h"
#include "rsn_supp/preauth.h"
#include "rsn_supp/pmksa_cache.h"
#include "common/wpa_ctrl.h"
#include "eap_peer/eap.h"
#include "ap/hostapd.h"
#include "p2p/p2p.h"
#include "fst/fst.h"
#include "wnm_sta.h"
#include "notify.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "common/gas_server.h"
#include "common/dpp.h"
#include "crypto/random.h"
#include "blacklist.h"
#include "wpas_glue.h"
#include "wps_supplicant.h"
#include "ibss_rsn.h"
#include "sme.h"
#include "gas_query.h"
#include "p2p_supplicant.h"
#include "bgscan.h"
#include "autoscan.h"
#include "ap.h"
#include "bss.h"
#include "scan.h"
#include "offchannel.h"
#include "interworking.h"
#include "mesh.h"
#include "mesh_mpm.h"
#include "wmm_ac.h"
#include "dpp_supplicant.h"
#define MAX_OWE_TRANSITION_BSS_SELECT_COUNT 5
#ifndef CONFIG_NO_SCAN_PROCESSING
static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
int new_scan, int own_request);
#endif /* CONFIG_NO_SCAN_PROCESSING */
int wpas_temp_disabled(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
{
struct os_reltime now;
if (ssid == NULL || ssid->disabled_until.sec == 0)
return 0;
os_get_reltime(&now);
if (ssid->disabled_until.sec > now.sec)
return ssid->disabled_until.sec - now.sec;
wpas_clear_temp_disabled(wpa_s, ssid, 0);
return 0;
}
#ifndef CONFIG_NO_SCAN_PROCESSING
/**
* wpas_reenabled_network_time - Time until first network is re-enabled
* @wpa_s: Pointer to wpa_supplicant data
* Returns: If all enabled networks are temporarily disabled, returns the time
* (in sec) until the first network is re-enabled. Otherwise returns 0.
*
* This function is used in case all enabled networks are temporarily disabled,
* in which case it returns the time (in sec) that the first network will be
* re-enabled. The function assumes that at least one network is enabled.
*/
static int wpas_reenabled_network_time(struct wpa_supplicant *wpa_s)
{
struct wpa_ssid *ssid;
int disabled_for, res = 0;
#ifdef CONFIG_INTERWORKING
if (wpa_s->conf->auto_interworking && wpa_s->conf->interworking &&
wpa_s->conf->cred)
return 0;
#endif /* CONFIG_INTERWORKING */
for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
if (ssid->disabled)
continue;
disabled_for = wpas_temp_disabled(wpa_s, ssid);
if (!disabled_for)
return 0;
if (!res || disabled_for < res)
res = disabled_for;
}
return res;
}
#endif /* CONFIG_NO_SCAN_PROCESSING */
void wpas_network_reenabled(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
if (wpa_s->disconnected || wpa_s->wpa_state != WPA_SCANNING)
return;
wpa_dbg(wpa_s, MSG_DEBUG,
"Try to associate due to network getting re-enabled");
if (wpa_supplicant_fast_associate(wpa_s) != 1) {
wpa_supplicant_cancel_sched_scan(wpa_s);
wpa_supplicant_req_scan(wpa_s, 0, 0);
}
}
static struct wpa_bss * wpa_supplicant_get_new_bss(
struct wpa_supplicant *wpa_s, const u8 *bssid)
{
struct wpa_bss *bss = NULL;
struct wpa_ssid *ssid = wpa_s->current_ssid;
if (ssid->ssid_len > 0)
bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
if (!bss)
bss = wpa_bss_get_bssid(wpa_s, bssid);
return bss;
}
static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
{
struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
if (!bss) {
wpa_supplicant_update_scan_results(wpa_s);
/* Get the BSS from the new scan results */
bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
}
if (bss)
wpa_s->current_bss = bss;
}
static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
{
struct wpa_ssid *ssid, *old_ssid;
u8 drv_ssid[SSID_MAX_LEN];
size_t drv_ssid_len;
int res;
if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
wpa_supplicant_update_current_bss(wpa_s);
if (wpa_s->current_ssid->ssid_len == 0)
return 0; /* current profile still in use */
res = wpa_drv_get_ssid(wpa_s, drv_ssid);
if (res < 0) {
wpa_msg(wpa_s, MSG_INFO,
"Failed to read SSID from driver");
return 0; /* try to use current profile */
}
drv_ssid_len = res;
if (drv_ssid_len == wpa_s->current_ssid->ssid_len &&
os_memcmp(drv_ssid, wpa_s->current_ssid->ssid,
drv_ssid_len) == 0)
return 0; /* current profile still in use */
#ifdef CONFIG_OWE
if ((wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_OWE) &&
wpa_s->current_bss &&
(wpa_s->current_bss->flags & WPA_BSS_OWE_TRANSITION) &&
drv_ssid_len == wpa_s->current_bss->ssid_len &&
os_memcmp(drv_ssid, wpa_s->current_bss->ssid,
drv_ssid_len) == 0)
return 0; /* current profile still in use */
#endif /* CONFIG_OWE */
wpa_msg(wpa_s, MSG_DEBUG,
"Driver-initiated BSS selection changed the SSID to %s",
wpa_ssid_txt(drv_ssid, drv_ssid_len));
/* continue selecting a new network profile */
}
wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
"information");
ssid = wpa_supplicant_get_ssid(wpa_s);
if (ssid == NULL) {
wpa_msg(wpa_s, MSG_INFO,
"No network configuration found for the current AP");
return -1;
}
if (wpas_network_disabled(wpa_s, ssid)) {
wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
return -1;
}
if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
return -1;
}
res = wpas_temp_disabled(wpa_s, ssid);
if (res > 0) {
wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
"disabled for %d second(s)", res);
return -1;
}
wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
"current AP");
if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
u8 wpa_ie[80];
size_t wpa_ie_len = sizeof(wpa_ie);
if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
wpa_ie, &wpa_ie_len) < 0)
wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
} else {
wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
}
if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
eapol_sm_invalidate_cached_session(wpa_s->eapol);
old_ssid = wpa_s->current_ssid;
wpa_s->current_ssid = ssid;
wpa_supplicant_update_current_bss(wpa_s);
wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
wpa_supplicant_initiate_eapol(wpa_s);
if (old_ssid != wpa_s->current_ssid)
wpas_notify_network_changed(wpa_s);
return 0;
}
void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
if (wpa_s->countermeasures) {
wpa_s->countermeasures = 0;
wpa_drv_set_countermeasures(wpa_s, 0);
wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
/*
* It is possible that the device is sched scanning, which means
* that a connection attempt will be done only when we receive
* scan results. However, in this case, it would be preferable
* to scan and connect immediately, so cancel the sched_scan and
* issue a regular scan flow.
*/
wpa_supplicant_cancel_sched_scan(wpa_s);
wpa_supplicant_req_scan(wpa_s, 0, 0);
}
}
void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
{
int bssid_changed;
wnm_bss_keep_alive_deinit(wpa_s);
#ifdef CONFIG_IBSS_RSN
ibss_rsn_deinit(wpa_s->ibss_rsn);
wpa_s->ibss_rsn = NULL;
#endif /* CONFIG_IBSS_RSN */
#ifdef CONFIG_AP
wpa_supplicant_ap_deinit(wpa_s);
#endif /* CONFIG_AP */
#ifdef CONFIG_HS20
/* Clear possibly configured frame filters */
wpa_drv_configure_frame_filters(wpa_s, 0);
#endif /* CONFIG_HS20 */
if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
return;
if (os_reltime_initialized(&wpa_s->session_start)) {
os_reltime_age(&wpa_s->session_start, &wpa_s->session_length);
wpa_s->session_start.sec = 0;
wpa_s->session_start.usec = 0;
wpas_notify_session_length(wpa_s);
}
wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
os_memset(wpa_s->bssid, 0, ETH_ALEN);
os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
sme_clear_on_disassoc(wpa_s);
wpa_s->current_bss = NULL;
wpa_s->assoc_freq = 0;
if (bssid_changed)
wpas_notify_bssid_changed(wpa_s);
eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
wpa_s->key_mgmt == WPA_KEY_MGMT_OWE ||
wpa_s->key_mgmt == WPA_KEY_MGMT_DPP || wpa_s->drv_authorized_port)
eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
wpa_s->drv_authorized_port = 0;
wpa_s->ap_ies_from_associnfo = 0;
wpa_s->current_ssid = NULL;
eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
wpa_s->key_mgmt = 0;
wpas_rrm_reset(wpa_s);
wpa_s->wnmsleep_used = 0;
wnm_clear_coloc_intf_reporting(wpa_s);
wpa_s->disable_mbo_oce = 0;
#ifdef CONFIG_TESTING_OPTIONS
wpa_s->last_tk_alg = WPA_ALG_NONE;
os_memset(wpa_s->last_tk, 0, sizeof(wpa_s->last_tk));
#endif /* CONFIG_TESTING_OPTIONS */
wpa_s->ieee80211ac = 0;
if (wpa_s->enabled_4addr_mode && wpa_drv_set_4addr_mode(wpa_s, 0) == 0)
wpa_s->enabled_4addr_mode = 0;
}
static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
{
struct wpa_ie_data ie;
int pmksa_set = -1;
size_t i;
if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
ie.pmkid == NULL)
return;
for (i = 0; i < ie.num_pmkid; i++) {
pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
ie.pmkid + i * PMKID_LEN,
NULL, NULL, 0, NULL, 0);
if (pmksa_set == 0) {
eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
break;
}
}
wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
"PMKSA cache", pmksa_set == 0 ? "" : "not ");
}
static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
if (data == NULL) {
wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
"event");
return;
}
wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
" index=%d preauth=%d",
MAC2STR(data->pmkid_candidate.bssid),
data->pmkid_candidate.index,
data->pmkid_candidate.preauth);
pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
data->pmkid_candidate.index,
data->pmkid_candidate.preauth);
}
static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
{
if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
return 0;
#ifdef IEEE8021X_EAPOL
if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
wpa_s->current_ssid &&
!(wpa_s->current_ssid->eapol_flags &
(EAPOL_FLAG_REQUIRE_KEY_UNICAST |
EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
/* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
* plaintext or static WEP keys). */
return 0;
}
#endif /* IEEE8021X_EAPOL */
return 1;
}
/**
* wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
* @wpa_s: pointer to wpa_supplicant data
* @ssid: Configuration data for the network
* Returns: 0 on success, -1 on failure
*
* This function is called when starting authentication with a network that is
* configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
*/
int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid)
{
#ifdef IEEE8021X_EAPOL
#ifdef PCSC_FUNCS
int aka = 0, sim = 0;
if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
wpa_s->scard != NULL || wpa_s->conf->external_sim)
return 0;
if (ssid == NULL || ssid->eap.eap_methods == NULL) {
sim = 1;
aka = 1;
} else {
struct eap_method_type *eap = ssid->eap.eap_methods;
while (eap->vendor != EAP_VENDOR_IETF ||
eap->method != EAP_TYPE_NONE) {
if (eap->vendor == EAP_VENDOR_IETF) {
if (eap->method == EAP_TYPE_SIM)
sim = 1;
else if (eap->method == EAP_TYPE_AKA ||
eap->method == EAP_TYPE_AKA_PRIME)
aka = 1;
}
eap++;
}
}
if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
sim = 0;
if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
NULL)
aka = 0;
if (!sim && !aka) {
wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
"use SIM, but neither EAP-SIM nor EAP-AKA are "
"enabled");
return 0;
}
wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
"(sim=%d aka=%d) - initialize PCSC", sim, aka);
wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
if (wpa_s->scard == NULL) {
wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
"(pcsc-lite)");
return -1;
}
wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
#endif /* PCSC_FUNCS */
#endif /* IEEE8021X_EAPOL */
return 0;
}
#ifndef CONFIG_NO_SCAN_PROCESSING
#ifdef CONFIG_WEP
static int has_wep_key(struct wpa_ssid *ssid)
{
int i;
for (i = 0; i < NUM_WEP_KEYS; i++) {
if (ssid->wep_key_len[i])
return 1;
}
return 0;
}
#endif /* CONFIG_WEP */
static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
struct wpa_ssid *ssid)
{
int privacy = 0;
if (ssid->mixed_cell)
return 1;
#ifdef CONFIG_WPS
if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
return 1;
#endif /* CONFIG_WPS */
#ifdef CONFIG_OWE
if ((ssid->key_mgmt & WPA_KEY_MGMT_OWE) && !ssid->owe_only)
return 1;
#endif /* CONFIG_OWE */
#ifdef CONFIG_WEP
if (has_wep_key(ssid))
privacy = 1;
#endif /* CONFIG_WEP */
#ifdef IEEE8021X_EAPOL
if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
privacy = 1;
#endif /* IEEE8021X_EAPOL */
if (wpa_key_mgmt_wpa(ssid->key_mgmt))
privacy = 1;
if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
privacy = 1;
if (bss->caps & IEEE80211_CAP_PRIVACY)
return privacy;
return !privacy;
}
static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid,
struct wpa_bss *bss, int debug_print)
{
struct wpa_ie_data ie;
int proto_match = 0;
const u8 *rsn_ie, *wpa_ie;
int ret;
#ifdef CONFIG_WEP
int wep_ok;
#endif /* CONFIG_WEP */
ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
if (ret >= 0)
return ret;
#ifdef CONFIG_WEP
/* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
(((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
#endif /* CONFIG_WEP */
rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
while ((ssid->proto & (WPA_PROTO_RSN | WPA_PROTO_OSEN)) && rsn_ie) {
proto_match++;
if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip RSN IE - parse failed");
break;
}
if (!ie.has_pairwise)
ie.pairwise_cipher = wpa_default_rsn_cipher(bss->freq);
if (!ie.has_group)
ie.group_cipher = wpa_default_rsn_cipher(bss->freq);
#ifdef CONFIG_WEP
if (wep_ok &&
(ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
{
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" selected based on TSN in RSN IE");
return 1;
}
#endif /* CONFIG_WEP */
if (!(ie.proto & ssid->proto) &&
!(ssid->proto & WPA_PROTO_OSEN)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip RSN IE - proto mismatch");
break;
}
if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip RSN IE - PTK cipher mismatch");
break;
}
if (!(ie.group_cipher & ssid->group_cipher)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip RSN IE - GTK cipher mismatch");
break;
}
if (ssid->group_mgmt_cipher &&
!(ie.mgmt_group_cipher & ssid->group_mgmt_cipher)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip RSN IE - group mgmt cipher mismatch");
break;
}
if (!(ie.key_mgmt & ssid->key_mgmt)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip RSN IE - key mgmt mismatch");
break;
}
if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
wpas_get_ssid_pmf(wpa_s, ssid) ==
MGMT_FRAME_PROTECTION_REQUIRED) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip RSN IE - no mgmt frame protection");
break;
}
if ((ie.capabilities & WPA_CAPABILITY_MFPR) &&
wpas_get_ssid_pmf(wpa_s, ssid) ==
NO_MGMT_FRAME_PROTECTION) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip RSN IE - no mgmt frame protection enabled but AP requires it");
break;
}
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" selected based on RSN IE");
return 1;
}
if (wpas_get_ssid_pmf(wpa_s, ssid) == MGMT_FRAME_PROTECTION_REQUIRED &&
(!(ssid->key_mgmt & WPA_KEY_MGMT_OWE) || ssid->owe_only)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - MFP Required but network not MFP Capable");
return 0;
}
wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
proto_match++;
if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip WPA IE - parse failed");
break;
}
#ifdef CONFIG_WEP
if (wep_ok &&
(ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
{
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" selected based on TSN in WPA IE");
return 1;
}
#endif /* CONFIG_WEP */
if (!(ie.proto & ssid->proto)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip WPA IE - proto mismatch");
break;
}
if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip WPA IE - PTK cipher mismatch");
break;
}
if (!(ie.group_cipher & ssid->group_cipher)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip WPA IE - GTK cipher mismatch");
break;
}
if (!(ie.key_mgmt & ssid->key_mgmt)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip WPA IE - key mgmt mismatch");
break;
}
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" selected based on WPA IE");
return 1;
}
if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
!rsn_ie) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" allow for non-WPA IEEE 802.1X");
return 1;
}
#ifdef CONFIG_OWE
if ((ssid->key_mgmt & WPA_KEY_MGMT_OWE) && !ssid->owe_only &&
!wpa_ie && !rsn_ie) {
if (wpa_s->owe_transition_select &&
wpa_bss_get_vendor_ie(bss, OWE_IE_VENDOR_TYPE) &&
ssid->owe_transition_bss_select_count + 1 <=
MAX_OWE_TRANSITION_BSS_SELECT_COUNT) {
ssid->owe_transition_bss_select_count++;
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip OWE transition BSS (selection count %d does not exceed %d)",
ssid->owe_transition_bss_select_count,
MAX_OWE_TRANSITION_BSS_SELECT_COUNT);
wpa_s->owe_transition_search = 1;
return 0;
}
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" allow in OWE transition mode");
return 1;
}
#endif /* CONFIG_OWE */
if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - no WPA/RSN proto match");
return 0;
}
if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG, " allow in OSEN");
return 1;
}
if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
return 1;
}
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" reject due to mismatch with WPA/WPA2");
return 0;
}
static int freq_allowed(int *freqs, int freq)
{
int i;
if (freqs == NULL)
return 1;
for (i = 0; freqs[i]; i++)
if (freqs[i] == freq)
return 1;
return 0;
}
static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
struct wpa_bss *bss, int debug_print)
{
const struct hostapd_hw_modes *mode = NULL, *modes;
const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
const u8 *rate_ie;
int i, j, k;
if (bss->freq == 0)
return 1; /* Cannot do matching without knowing band */
modes = wpa_s->hw.modes;
if (modes == NULL) {
/*
* The driver does not provide any additional information
* about the utilized hardware, so allow the connection attempt
* to continue.
*/
return 1;
}
for (i = 0; i < wpa_s->hw.num_modes; i++) {
for (j = 0; j < modes[i].num_channels; j++) {
int freq = modes[i].channels[j].freq;
if (freq == bss->freq) {
if (mode &&
mode->mode == HOSTAPD_MODE_IEEE80211G)
break; /* do not allow 802.11b replace
* 802.11g */
mode = &modes[i];
break;
}
}
}
if (mode == NULL)
return 0;
for (i = 0; i < (int) sizeof(scan_ie); i++) {
rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
if (rate_ie == NULL)
continue;
for (j = 2; j < rate_ie[1] + 2; j++) {
int flagged = !!(rate_ie[j] & 0x80);
int r = (rate_ie[j] & 0x7f) * 5;
/*
* IEEE Std 802.11n-2009 7.3.2.2:
* The new BSS Membership selector value is encoded
* like a legacy basic rate, but it is not a rate and
* only indicates if the BSS members are required to
* support the mandatory features of Clause 20 [HT PHY]
* in order to join the BSS.
*/
if (flagged && ((rate_ie[j] & 0x7f) ==
BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
if (!ht_supported(mode)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" hardware does not support HT PHY");
return 0;
}
continue;
}
/* There's also a VHT selector for 802.11ac */
if (flagged && ((rate_ie[j] & 0x7f) ==
BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
if (!vht_supported(mode)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" hardware does not support VHT PHY");
return 0;
}
continue;
}
#ifdef CONFIG_SAE
if (flagged && ((rate_ie[j] & 0x7f) ==
BSS_MEMBERSHIP_SELECTOR_SAE_H2E_ONLY)) {
if (wpa_s->conf->sae_pwe == 0 &&
!ssid->sae_password_id &&
wpa_key_mgmt_sae(ssid->key_mgmt)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" SAE H2E disabled");
#ifdef CONFIG_TESTING_OPTIONS
if (wpa_s->ignore_sae_h2e_only) {
wpa_dbg(wpa_s, MSG_DEBUG,
"TESTING: Ignore SAE H2E requirement mismatch");
continue;
}
#endif /* CONFIG_TESTING_OPTIONS */
return 0;
}
continue;
}
#endif /* CONFIG_SAE */
if (!flagged)
continue;
/* check for legacy basic rates */
for (k = 0; k < mode->num_rates; k++) {
if (mode->rates[k] == r)
break;
}
if (k == mode->num_rates) {
/*
* IEEE Std 802.11-2007 7.3.2.2 demands that in
* order to join a BSS all required rates
* have to be supported by the hardware.
*/
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)",
r / 10, r % 10,
bss->freq, mode->mode, mode->num_rates);
return 0;
}
}
}
return 1;
}
/*
* Test whether BSS is in an ESS.
* This is done differently in DMG (60 GHz) and non-DMG bands
*/
static int bss_is_ess(struct wpa_bss *bss)
{
if (bss_is_dmg(bss)) {
return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
IEEE80211_CAP_DMG_AP;
}
return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
IEEE80211_CAP_ESS);
}
static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
{
size_t i;
for (i = 0; i < ETH_ALEN; i++) {
if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
return 0;
}
return 1;
}
static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
{
size_t i;
for (i = 0; i < num; i++) {
const u8 *a = list + i * ETH_ALEN * 2;
const u8 *m = a + ETH_ALEN;
if (match_mac_mask(a, addr, m))
return 1;
}
return 0;
}
static void owe_trans_ssid(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
const u8 **ret_ssid, size_t *ret_ssid_len)
{
#ifdef CONFIG_OWE
const u8 *owe, *pos, *end, *bssid;
u8 ssid_len;
struct wpa_bss *open_bss;
owe = wpa_bss_get_vendor_ie(bss, OWE_IE_VENDOR_TYPE);
if (!owe || !wpa_bss_get_ie(bss, WLAN_EID_RSN))
return;
pos = owe + 6;
end = owe + 2 + owe[1];
if (end - pos < ETH_ALEN + 1)
return;
bssid = pos;
pos += ETH_ALEN;
ssid_len = *pos++;
if (end - pos < ssid_len || ssid_len > SSID_MAX_LEN)
return;
/* Match the profile SSID against the OWE transition mode SSID on the
* open network. */
wpa_dbg(wpa_s, MSG_DEBUG, "OWE: transition mode BSSID: " MACSTR
" SSID: %s", MAC2STR(bssid), wpa_ssid_txt(pos, ssid_len));
*ret_ssid = pos;
*ret_ssid_len = ssid_len;
if (!(bss->flags & WPA_BSS_OWE_TRANSITION)) {
struct wpa_ssid *ssid;
for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
if (wpas_network_disabled(wpa_s, ssid))
continue;
if (ssid->ssid_len == ssid_len &&
os_memcmp(ssid->ssid, pos, ssid_len) == 0) {
/* OWE BSS in transition mode for a currently
* enabled OWE network. */
wpa_dbg(wpa_s, MSG_DEBUG,
"OWE: transition mode OWE SSID for active OWE profile");
bss->flags |= WPA_BSS_OWE_TRANSITION;
break;
}
}
}
if (bss->ssid_len > 0)
return;
open_bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
if (!open_bss)
return;
if (ssid_len != open_bss->ssid_len ||
os_memcmp(pos, open_bss->ssid, ssid_len) != 0) {
wpa_dbg(wpa_s, MSG_DEBUG,
"OWE: transition mode SSID mismatch: %s",
wpa_ssid_txt(open_bss->ssid, open_bss->ssid_len));
return;
}
owe = wpa_bss_get_vendor_ie(open_bss, OWE_IE_VENDOR_TYPE);
if (!owe || wpa_bss_get_ie(open_bss, WLAN_EID_RSN)) {
wpa_dbg(wpa_s, MSG_DEBUG,
"OWE: transition mode open BSS unexpected info");
return;
}
pos = owe + 6;
end = owe + 2 + owe[1];
if (end - pos < ETH_ALEN + 1)
return;
if (os_memcmp(pos, bss->bssid, ETH_ALEN) != 0) {
wpa_dbg(wpa_s, MSG_DEBUG,
"OWE: transition mode BSSID mismatch: " MACSTR,
MAC2STR(pos));
return;
}
pos += ETH_ALEN;
ssid_len = *pos++;
if (end - pos < ssid_len || ssid_len > SSID_MAX_LEN)
return;
wpa_dbg(wpa_s, MSG_DEBUG, "OWE: learned transition mode OWE SSID: %s",
wpa_ssid_txt(pos, ssid_len));
os_memcpy(bss->ssid, pos, ssid_len);
bss->ssid_len = ssid_len;
bss->flags |= WPA_BSS_OWE_TRANSITION;
#endif /* CONFIG_OWE */
}
static int disabled_freq(struct wpa_supplicant *wpa_s, int freq)
{
int i, j;
if (!wpa_s->hw.modes || !wpa_s->hw.num_modes)
return 0;
for (j = 0; j < wpa_s->hw.num_modes; j++) {
struct hostapd_hw_modes *mode = &wpa_s->hw.modes[j];
for (i = 0; i < mode->num_channels; i++) {
struct hostapd_channel_data *chan = &mode->channels[i];
if (chan->freq == freq)
return !!(chan->flag & HOSTAPD_CHAN_DISABLED);
}
}
return 1;
}
struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
int i, struct wpa_bss *bss,
struct wpa_ssid *group,
int only_first_ssid, int debug_print)
{
u8 wpa_ie_len, rsn_ie_len;
int wpa;
struct wpa_blacklist *e;
const u8 *ie;
struct wpa_ssid *ssid;
int osen, rsn_osen = 0;
#ifdef CONFIG_MBO
const u8 *assoc_disallow;
#endif /* CONFIG_MBO */
const u8 *match_ssid;
size_t match_ssid_len;
struct wpa_ie_data data;
ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
wpa_ie_len = ie ? ie[1] : 0;
ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
rsn_ie_len = ie ? ie[1] : 0;
if (ie && wpa_parse_wpa_ie_rsn(ie, 2 + ie[1], &data) == 0 &&
(data.key_mgmt & WPA_KEY_MGMT_OSEN))
rsn_osen = 1;
ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
osen = ie != NULL;
if (debug_print) {
wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR
" ssid='%s' wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d freq=%d %s%s%s",
i, MAC2STR(bss->bssid),
wpa_ssid_txt(bss->ssid, bss->ssid_len),
wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
bss->freq,
wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ?
" wps" : "",
(wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE))
? " p2p" : "",
osen ? " osen=1" : "");
}
e = wpa_blacklist_get(wpa_s, bss->bssid);
if (e) {
int limit = 1;
if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
/*
* When only a single network is enabled, we can
* trigger blacklisting on the first failure. This
* should not be done with multiple enabled networks to
* avoid getting forced to move into a worse ESS on
* single error if there are no other BSSes of the
* current ESS.
*/
limit = 0;
}
if (e->count > limit) {
if (debug_print) {
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - blacklisted (count=%d limit=%d)",
e->count, limit);
}
return NULL;
}
}
match_ssid = bss->ssid;
match_ssid_len = bss->ssid_len;
owe_trans_ssid(wpa_s, bss, &match_ssid, &match_ssid_len);
if (match_ssid_len == 0) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
return NULL;
}
if (disallowed_bssid(wpa_s, bss->bssid)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed");
return NULL;
}
if (disallowed_ssid(wpa_s, match_ssid, match_ssid_len)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed");
return NULL;
}
if (disabled_freq(wpa_s, bss->freq)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG, " skip - channel disabled");
return NULL;
}
wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
int res;
if (wpas_network_disabled(wpa_s, ssid)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
continue;
}
res = wpas_temp_disabled(wpa_s, ssid);
if (res > 0) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - disabled temporarily for %d second(s)",
res);
continue;
}
#ifdef CONFIG_WPS
if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - blacklisted (WPS)");
continue;
}
if (wpa && ssid->ssid_len == 0 &&
wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
check_ssid = 0;
if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
/* Only allow wildcard SSID match if an AP
* advertises active WPS operation that matches
* with our mode. */
check_ssid = 1;
if (ssid->ssid_len == 0 &&
wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
check_ssid = 0;
}
#endif /* CONFIG_WPS */
if (ssid->bssid_set && ssid->ssid_len == 0 &&
os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
check_ssid = 0;
if (check_ssid &&
(match_ssid_len != ssid->ssid_len ||
os_memcmp(match_ssid, ssid->ssid, match_ssid_len) != 0)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - SSID mismatch");
continue;
}
if (ssid->bssid_set &&
os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - BSSID mismatch");
continue;
}
/* check blacklist */
if (ssid->num_bssid_blacklist &&
addr_in_list(bss->bssid, ssid->bssid_blacklist,
ssid->num_bssid_blacklist)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - BSSID blacklisted");
continue;
}
/* if there is a whitelist, only accept those APs */
if (ssid->num_bssid_whitelist &&
!addr_in_list(bss->bssid, ssid->bssid_whitelist,
ssid->num_bssid_whitelist)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - BSSID not in whitelist");
continue;
}
if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss,
debug_print))
continue;
if (!osen && !wpa &&
!(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
!(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
!(ssid->key_mgmt & WPA_KEY_MGMT_OWE) &&
!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - non-WPA network not allowed");
continue;
}
#ifdef CONFIG_WEP
if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
has_wep_key(ssid)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - ignore WPA/WPA2 AP for WEP network block");
continue;
}
#endif /* CONFIG_WEP */
if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen &&
!rsn_osen) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - non-OSEN network not allowed");
continue;
}
if (!wpa_supplicant_match_privacy(bss, ssid)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - privacy mismatch");
continue;
}
if (ssid->mode != WPAS_MODE_MESH && !bss_is_ess(bss) &&
!bss_is_pbss(bss)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - not ESS, PBSS, or MBSS");
continue;
}
if (ssid->pbss != 2 && ssid->pbss != bss_is_pbss(bss)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - PBSS mismatch (ssid %d bss %d)",
ssid->pbss, bss_is_pbss(bss));
continue;
}
if (!freq_allowed(ssid->freq_list, bss->freq)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - frequency not allowed");
continue;
}
#ifdef CONFIG_MESH
if (ssid->mode == WPAS_MODE_MESH && ssid->frequency > 0 &&
ssid->frequency != bss->freq) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - frequency not allowed (mesh)");
continue;
}
#endif /* CONFIG_MESH */
if (!rate_match(wpa_s, ssid, bss, debug_print)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - rate sets do not match");
continue;
}
#ifdef CONFIG_SAE
if ((wpa_s->conf->sae_pwe == 1 || ssid->sae_password_id) &&
wpa_s->conf->sae_pwe != 3 &&
wpa_key_mgmt_sae(ssid->key_mgmt) &&
(!(ie = wpa_bss_get_ie(bss, WLAN_EID_RSNX)) ||
ie[1] < 1 ||
!(ie[2] & BIT(WLAN_RSNX_CAPAB_SAE_H2E)))) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - SAE H2E required, but not supported by the AP");
continue;
}
#endif /* CONFIG_SAE */
#ifndef CONFIG_IBSS_RSN
if (ssid->mode == WPAS_MODE_IBSS &&
!(ssid->key_mgmt & (WPA_KEY_MGMT_NONE |
WPA_KEY_MGMT_WPA_NONE))) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - IBSS RSN not supported in the build");
continue;
}
#endif /* !CONFIG_IBSS_RSN */
#ifdef CONFIG_P2P
if (ssid->p2p_group &&
!wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
!wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - no P2P IE seen");
continue;
}
if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
struct wpabuf *p2p_ie;
u8 dev_addr[ETH_ALEN];
ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
if (ie == NULL) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - no P2P element");
continue;
}
p2p_ie = wpa_bss_get_vendor_ie_multi(
bss, P2P_IE_VENDOR_TYPE);
if (p2p_ie == NULL) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - could not fetch P2P element");
continue;
}
if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
|| os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
ETH_ALEN) != 0) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - no matching GO P2P Device Address in P2P element");
wpabuf_free(p2p_ie);
continue;
}
wpabuf_free(p2p_ie);
}
/*
* TODO: skip the AP if its P2P IE has Group Formation
* bit set in the P2P Group Capability Bitmap and we
* are not in Group Formation with that device.
*/
#endif /* CONFIG_P2P */
if (os_reltime_before(&bss->last_update, &wpa_s->scan_min_time))
{
struct os_reltime diff;
os_reltime_sub(&wpa_s->scan_min_time,
&bss->last_update, &diff);
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - scan result not recent enough (%u.%06u seconds too old)",
(unsigned int) diff.sec,
(unsigned int) diff.usec);
continue;
}
#ifdef CONFIG_MBO
#ifdef CONFIG_TESTING_OPTIONS
if (wpa_s->ignore_assoc_disallow)
goto skip_assoc_disallow;
#endif /* CONFIG_TESTING_OPTIONS */
assoc_disallow = wpas_mbo_get_bss_attr(
bss, MBO_ATTR_ID_ASSOC_DISALLOW);
if (assoc_disallow && assoc_disallow[1] >= 1) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - MBO association disallowed (reason %u)",
assoc_disallow[2]);
continue;
}
if (wpa_is_bss_tmp_disallowed(wpa_s, bss)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - AP temporarily disallowed");
continue;
}
#ifdef CONFIG_TESTING_OPTIONS
skip_assoc_disallow:
#endif /* CONFIG_TESTING_OPTIONS */
#endif /* CONFIG_MBO */
#ifdef CONFIG_DPP
if ((ssid->key_mgmt & WPA_KEY_MGMT_DPP) &&
!wpa_sm_pmksa_exists(wpa_s->wpa, bss->bssid, ssid) &&
(!ssid->dpp_connector ||
!ssid->dpp_netaccesskey ||
!ssid->dpp_csign)) {
if (debug_print)
wpa_dbg(wpa_s, MSG_DEBUG,
" skip - no PMKSA entry for DPP");
continue;
}
#endif /* CONFIG_DPP */
/* Matching configuration found */
return ssid;
}
/* No matching configuration found */
return NULL;
}
static struct wpa_bss *
wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
struct wpa_ssid *group,
struct wpa_ssid **selected_ssid,
int only_first_ssid)
{
unsigned int i;
if (wpa_s->current_ssid) {
struct wpa_ssid *ssid;
wpa_dbg(wpa_s, MSG_DEBUG,
"Scan results matching the currently selected network");
for (i = 0; i < wpa_s->last_scan_res_used; i++) {
struct wpa_bss *bss = wpa_s->last_scan_res[i];
ssid = wpa_scan_res_match(wpa_s, i, bss, group,
only_first_ssid, 0);
if (ssid != wpa_s->current_ssid)
continue;
wpa_dbg(wpa_s, MSG_DEBUG, "%u: " MACSTR
" freq=%d level=%d snr=%d est_throughput=%u",
i, MAC2STR(bss->bssid), bss->freq, bss->level,
bss->snr, bss->est_throughput);
}
}
if (only_first_ssid)
wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
group->id);
else
wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
group->priority);
for (i = 0; i < wpa_s->last_scan_res_used; i++) {
struct wpa_bss *bss = wpa_s->last_scan_res[i];
wpa_s->owe_transition_select = 1;
*selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
only_first_ssid, 1);
wpa_s->owe_transition_select = 0;
if (!*selected_ssid)
continue;
wpa_dbg(wpa_s, MSG_DEBUG, " selected %sBSS " MACSTR
" ssid='%s'",
bss == wpa_s->current_bss ? "current ": "",
MAC2STR(bss->bssid),
wpa_ssid_txt(bss->ssid, bss->ssid_len));
return bss;
}
return NULL;
}
struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
struct wpa_ssid **selected_ssid)
{
struct wpa_bss *selected = NULL;
int prio;
struct wpa_ssid *next_ssid = NULL;
struct wpa_ssid *ssid;
if (wpa_s->last_scan_res == NULL ||
wpa_s->last_scan_res_used == 0)
return NULL; /* no scan results from last update */
if (wpa_s->next_ssid) {
/* check that next_ssid is still valid */
for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
if (ssid == wpa_s->next_ssid)
break;
}
next_ssid = ssid;
wpa_s->next_ssid = NULL;
}
while (selected == NULL) {
for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
if (next_ssid && next_ssid->priority ==
wpa_s->conf->pssid[prio]->priority) {
selected = wpa_supplicant_select_bss(
wpa_s, next_ssid, selected_ssid, 1);
if (selected)
break;
}
selected = wpa_supplicant_select_bss(
wpa_s, wpa_s->conf->pssid[prio],
selected_ssid, 0);
if (selected)
break;
}
if (selected == NULL && wpa_s->blacklist &&
!wpa_s->countermeasures) {
wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
"blacklist and try again");
wpa_blacklist_clear(wpa_s);
wpa_s->blacklist_cleared++;
} else if (selected == NULL)
break;
}
ssid = *selected_ssid;
if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set &&
!ssid->passphrase && !ssid->ext_psk) {
const char *field_name, *txt = NULL;
wpa_dbg(wpa_s, MSG_DEBUG,
"PSK/passphrase not yet available for the selected network");
wpas_notify_network_request(wpa_s, ssid,
WPA_CTRL_REQ_PSK_PASSPHRASE, NULL);
field_name = wpa_supplicant_ctrl_req_to_string(
WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt);
if (field_name == NULL)
return NULL;
wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
selected = NULL;
}
return selected;
}
static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
int timeout_sec, int timeout_usec)
{
if (!wpa_supplicant_enabled_networks(wpa_s)) {
/*
* No networks are enabled; short-circuit request so
* we don't wait timeout seconds before transitioning
* to INACTIVE state.
*/
wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
"since there are no enabled networks");
wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
return;
}
wpa_s->scan_for_connection = 1;
wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
}
int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
struct wpa_bss *selected,
struct wpa_ssid *ssid)
{
if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
"PBC session overlap");
wpas_notify_wps_event_pbc_overlap(wpa_s);
#ifdef CONFIG_P2P
if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
wpa_s->p2p_in_provisioning) {
eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
wpa_s, NULL);
return -1;
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_WPS
wpas_wps_pbc_overlap(wpa_s);
wpas_wps_cancel(wpa_s);
#endif /* CONFIG_WPS */
return -1;
}
wpa_msg(wpa_s, MSG_DEBUG,
"Considering connect request: reassociate: %d selected: "
MACSTR " bssid: " MACSTR " pending: " MACSTR
" wpa_state: %s ssid=%p current_ssid=%p",
wpa_s->reassociate, MAC2STR(selected->bssid),
MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
wpa_supplicant_state_txt(wpa_s->wpa_state),
ssid, wpa_s->current_ssid);
/*
* Do not trigger new association unless the BSSID has changed or if
* reassociation is requested. If we are in process of associating with
* the selected BSSID, do not trigger new attempt.
*/
if (wpa_s->reassociate ||
(os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
((wpa_s->wpa_state != WPA_ASSOCIATING &&
wpa_s->wpa_state != WPA_AUTHENTICATING) ||
(!is_zero_ether_addr(wpa_s->pending_bssid) &&
os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
0) ||
(is_zero_ether_addr(wpa_s->pending_bssid) &&
ssid != wpa_s->current_ssid)))) {
if (wpa_supplicant_scard_init(wpa_s, ssid)) {
wpa_supplicant_req_new_scan(wpa_s, 10, 0);
return 0;
}
wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
MAC2STR(selected->bssid));
wpa_supplicant_associate(wpa_s, selected, ssid);
} else {
wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
"connect with the selected AP");
}
return 0;
}
static struct wpa_ssid *
wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
{
int prio;
struct wpa_ssid *ssid;
for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
{
if (wpas_network_disabled(wpa_s, ssid))
continue;
#ifndef CONFIG_IBSS_RSN
if (ssid->mode == WPAS_MODE_IBSS &&
!(ssid->key_mgmt & (WPA_KEY_MGMT_NONE |
WPA_KEY_MGMT_WPA_NONE))) {
wpa_msg(wpa_s, MSG_INFO,
"IBSS RSN not supported in the build - cannot use the profile for SSID '%s'",
wpa_ssid_txt(ssid->ssid,
ssid->ssid_len));
continue;
}
#endif /* !CONFIG_IBSS_RSN */
if (ssid->mode == WPAS_MODE_IBSS ||
ssid->mode == WPAS_MODE_AP ||
ssid->mode == WPAS_MODE_MESH)
return ssid;
}
}
return NULL;
}
/* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
* on BSS added and BSS changed events */
static void wpa_supplicant_rsn_preauth_scan_results(
struct wpa_supplicant *wpa_s)
{
struct wpa_bss *bss;
if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
return;
dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
const u8 *ssid, *rsn;
ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
if (ssid == NULL)
continue;
rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
if (rsn == NULL)
continue;
rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
}
}
#ifndef CONFIG_NO_ROAMING
static int wpas_get_snr_signal_info(u32 frequency, int avg_signal, int noise)
{
if (noise == WPA_INVALID_NOISE)
noise = IS_5GHZ(frequency) ? DEFAULT_NOISE_FLOOR_5GHZ :
DEFAULT_NOISE_FLOOR_2GHZ;
return avg_signal - noise;
}
static unsigned int
wpas_get_est_throughput_from_bss_snr(const struct wpa_supplicant *wpa_s,
const struct wpa_bss *bss, int snr)
{
int rate = wpa_bss_get_max_rate(bss);
const u8 *ies = (const void *) (bss + 1);
size_t ie_len = bss->ie_len ? bss->ie_len : bss->beacon_ie_len;
return wpas_get_est_tpt(wpa_s, ies, ie_len, rate, snr);
}
#endif /* CONFIG_NO_ROAMING */
static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
struct wpa_bss *selected,
struct wpa_ssid *ssid)
{
struct wpa_bss *current_bss = NULL;
#ifndef CONFIG_NO_ROAMING
int min_diff, diff;
int to_5ghz;
int cur_level;
unsigned int cur_est, sel_est;
struct wpa_signal_info si;
int cur_snr = 0;
#endif /* CONFIG_NO_ROAMING */
if (wpa_s->reassociate)
return 1; /* explicit request to reassociate */
if (wpa_s->wpa_state < WPA_ASSOCIATED)
return 1; /* we are not associated; continue */
if (wpa_s->current_ssid == NULL)
return 1; /* unknown current SSID */
if (wpa_s->current_ssid != ssid)
return 1; /* different network block */
if (wpas_driver_bss_selection(wpa_s))
return 0; /* Driver-based roaming */
if (wpa_s->current_ssid->ssid)
current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
wpa_s->current_ssid->ssid,
wpa_s->current_ssid->ssid_len);
if (!current_bss)
current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
if (!current_bss)
return 1; /* current BSS not seen in scan results */
if (current_bss == selected)
return 0;
if (selected->last_update_idx > current_bss->last_update_idx)
return 1; /* current BSS not seen in the last scan */
#ifndef CONFIG_NO_ROAMING
wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
" freq=%d level=%d snr=%d est_throughput=%u",
MAC2STR(current_bss->bssid),
current_bss->freq, current_bss->level,
current_bss->snr, current_bss->est_throughput);
wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
" freq=%d level=%d snr=%d est_throughput=%u",
MAC2STR(selected->bssid), selected->freq, selected->level,
selected->snr, selected->est_throughput);
if (wpa_s->current_ssid->bssid_set &&
os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
0) {
wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
"has preferred BSSID");
return 1;
}
cur_level = current_bss->level;
cur_est = current_bss->est_throughput;
sel_est = selected->est_throughput;
/*
* Try to poll the signal from the driver since this will allow to get
* more accurate values. In some cases, there can be big differences
* between the RSSI of the Probe Response frames of the AP we are
* associated with and the Beacon frames we hear from the same AP after
* association. This can happen, e.g., when there are two antennas that
* hear the AP very differently. If the driver chooses to hear the
* Probe Response frames during the scan on the "bad" antenna because
* it wants to save power, but knows to choose the other antenna after
* association, we will hear our AP with a low RSSI as part of the
* scan even when we can hear it decently on the other antenna. To cope
* with this, ask the driver to teach us how it hears the AP. Also, the
* scan results may be a bit old, since we can very quickly get fresh
* information about our currently associated AP.
*/
if (wpa_drv_signal_poll(wpa_s, &si) == 0 &&
(si.avg_beacon_signal || si.avg_signal)) {
cur_level = si.avg_beacon_signal ? si.avg_beacon_signal :
si.avg_signal;
cur_snr = wpas_get_snr_signal_info(si.frequency, cur_level,
si.current_noise);
cur_est = wpas_get_est_throughput_from_bss_snr(wpa_s,
current_bss,
cur_snr);
wpa_dbg(wpa_s, MSG_DEBUG,
"Using signal poll values for the current BSS: level=%d snr=%d est_throughput=%u",
cur_level, cur_snr, cur_est);
}
if (sel_est > cur_est + 5000) {
wpa_dbg(wpa_s, MSG_DEBUG,
"Allow reassociation - selected BSS has better estimated throughput");
return 1;
}
to_5ghz = selected->freq > 4000 && current_bss->freq < 4000;
if (cur_level < 0 && cur_level > selected->level + to_5ghz * 2 &&
sel_est < cur_est * 1.2) {
wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
"signal level");
return 0;
}
if (cur_est > sel_est + 5000) {
wpa_dbg(wpa_s, MSG_DEBUG,
"Skip roam - Current BSS has better estimated throughput");
return 0;
}
if (cur_snr > GREAT_SNR) {
wpa_dbg(wpa_s, MSG_DEBUG,
"Skip roam - Current BSS has good SNR (%u > %u)",
cur_snr, GREAT_SNR);
return 0;
}
if (cur_level < -85) /* ..-86 dBm */
min_diff = 1;
else if (cur_level < -80) /* -85..-81 dBm */
min_diff = 2;
else if (cur_level < -75) /* -80..-76 dBm */
min_diff = 3;
else if (cur_level < -70) /* -75..-71 dBm */
min_diff = 4;
else if (cur_level < 0) /* -70..-1 dBm */
min_diff = 5;
else /* unspecified units (not in dBm) */
min_diff = 2;
if (cur_est > sel_est * 1.5)
min_diff += 10;
else if (cur_est > sel_est * 1.2)
min_diff += 5;
else if (cur_est > sel_est * 1.1)
min_diff += 2;
else if (cur_est > sel_est)
min_diff++;
else if (sel_est > cur_est * 1.5)
min_diff -= 10;
else if (sel_est > cur_est * 1.2)
min_diff -= 5;
else if (sel_est > cur_est * 1.1)
min_diff -= 2;
else if (sel_est > cur_est)
min_diff--;
if (to_5ghz)
min_diff -= 2;
diff = selected->level - cur_level;
if (diff < min_diff) {
wpa_dbg(wpa_s, MSG_DEBUG,
"Skip roam - too small difference in signal level (%d < %d)",
diff, min_diff);
return 0;
}
wpa_dbg(wpa_s, MSG_DEBUG,
"Allow reassociation due to difference in signal level (%d >= %d)",
diff, min_diff);
return 1;
#else /* CONFIG_NO_ROAMING */
return 0;
#endif /* CONFIG_NO_ROAMING */
}
/*
* Return a negative value if no scan results could be fetched or if scan
* results should not be shared with other virtual interfaces.
* Return 0 if scan results were fetched and may be shared with other
* interfaces.
* Return 1 if scan results may be shared with other virtual interfaces but may
* not trigger any operations.
* Return 2 if the interface was removed and cannot be used.
*/
static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
union wpa_event_data *data,
int own_request, int update_only)
{
struct wpa_scan_results *scan_res = NULL;
int ret = 0;
int ap = 0;
#ifndef CONFIG_NO_RANDOM_POOL
size_t i, num;
#endif /* CONFIG_NO_RANDOM_POOL */
#ifdef CONFIG_AP
if (wpa_s->ap_iface)
ap = 1;
#endif /* CONFIG_AP */
wpa_supplicant_notify_scanning(wpa_s, 0);
scan_res = wpa_supplicant_get_scan_results(wpa_s,
data ? &data->scan_info :
NULL, 1);
if (scan_res == NULL) {
if (wpa_s->conf->ap_scan == 2 || ap ||
wpa_s->scan_res_handler == scan_only_handler)
return -1;
if (!own_request)
return -1;
if (data && data->scan_info.external_scan)
return -1;
wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
"scanning again");
wpa_supplicant_req_new_scan(wpa_s, 1, 0);
ret = -1;
goto scan_work_done;
}
#ifndef CONFIG_NO_RANDOM_POOL
num = scan_res->num;
if (num > 10)
num = 10;
for (i = 0; i < num; i++) {
u8 buf[5];
struct wpa_scan_res *res = scan_res->res[i];
buf[0] = res->bssid[5];
buf[1] = res->qual & 0xff;
buf[2] = res->noise & 0xff;
buf[3] = res->level & 0xff;
buf[4] = res->tsf & 0xff;
random_add_randomness(buf, sizeof(buf));
}
#endif /* CONFIG_NO_RANDOM_POOL */
if (update_only) {
ret = 1;
goto scan_work_done;
}
if (own_request && wpa_s->scan_res_handler &&
!(data && data->scan_info.external_scan)) {
void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
struct wpa_scan_results *scan_res);
scan_res_handler = wpa_s->scan_res_handler;
wpa_s->scan_res_handler = NULL;
scan_res_handler(wpa_s, scan_res);
ret = 1;
goto scan_work_done;
}
if (ap) {
wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
#ifdef CONFIG_AP
if (wpa_s->ap_iface->scan_cb)
wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
#endif /* CONFIG_AP */
goto scan_work_done;
}
wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
wpa_s->own_scan_running,
data ? data->scan_info.external_scan : 0);
if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
wpa_s->manual_scan_use_id && wpa_s->own_scan_running &&
own_request && !(data && data->scan_info.external_scan)) {
wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
wpa_s->manual_scan_id);
wpa_s->manual_scan_use_id = 0;
} else {
wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
}
wpas_notify_scan_results(wpa_s);
wpas_notify_scan_done(wpa_s, 1);
if (data && data->scan_info.external_scan) {
wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
wpa_scan_results_free(scan_res);
return 0;
}
if (wnm_scan_process(wpa_s, 1) > 0)
goto scan_work_done;
if (sme_proc_obss_scan(wpa_s, scan_res) > 0)
goto scan_work_done;
if (own_request && data &&
wpas_beacon_rep_scan_process(wpa_s, scan_res, &data->scan_info) > 0)
goto scan_work_done;
if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
goto scan_work_done;
if (autoscan_notify_scan(wpa_s, scan_res))
goto scan_work_done;
if (wpa_s->disconnected) {
wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
goto scan_work_done;
}
if (!wpas_driver_bss_selection(wpa_s) &&
bgscan_notify_scan(wpa_s, scan_res) == 1)
goto scan_work_done;
wpas_wps_update_ap_info(wpa_s, scan_res);
if (wpa_s->wpa_state >= WPA_AUTHENTICATING &&
wpa_s->wpa_state < WPA_COMPLETED)
goto scan_work_done;
wpa_scan_results_free(scan_res);
if (own_request && wpa_s->scan_work) {
struct wpa_radio_work *work = wpa_s->scan_work;
wpa_s->scan_work = NULL;
radio_work_done(work);
}
os_free(wpa_s->last_scan_freqs);
wpa_s->last_scan_freqs = NULL;
wpa_s->num_last_scan_freqs = 0;
if (own_request && data &&
data->scan_info.freqs && data->scan_info.num_freqs) {
wpa_s->last_scan_freqs = os_malloc(sizeof(int) *
data->scan_info.num_freqs);
if (wpa_s->last_scan_freqs) {
os_memcpy(wpa_s->last_scan_freqs,
data->scan_info.freqs,
sizeof(int) * data->scan_info.num_freqs);
wpa_s->num_last_scan_freqs = data->scan_info.num_freqs;
}
}
return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
scan_work_done:
wpa_scan_results_free(scan_res);
if (own_request && wpa_s->scan_work) {
struct wpa_radio_work *work = wpa_s->scan_work;
wpa_s->scan_work = NULL;
radio_work_done(work);
}
return ret;
}
static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
int new_scan, int own_request)
{
struct wpa_bss *selected;
struct wpa_ssid *ssid = NULL;
int time_to_reenable = wpas_reenabled_network_time(wpa_s);
if (time_to_reenable > 0) {
wpa_dbg(wpa_s, MSG_DEBUG,
"Postpone network selection by %d seconds since all networks are disabled",
time_to_reenable);
eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
eloop_register_timeout(time_to_reenable, 0,
wpas_network_reenabled, wpa_s, NULL);
return 0;
}
if (wpa_s->p2p_mgmt)
return 0; /* no normal connection on p2p_mgmt interface */
wpa_s->owe_transition_search = 0;
selected = wpa_supplicant_pick_network(wpa_s, &ssid);
#ifdef CONFIG_MESH
if (wpa_s->ifmsh) {
wpa_msg(wpa_s, MSG_INFO,
"Avoiding join because we already joined a mesh group");
return 0;
}
#endif /* CONFIG_MESH */
if (selected) {
int skip;
skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
if (skip) {
if (new_scan)
wpa_supplicant_rsn_preauth_scan_results(wpa_s);
return 0;
}
wpa_s->suitable_network++;
if (ssid != wpa_s->current_ssid &&
wpa_s->wpa_state >= WPA_AUTHENTICATING) {
wpa_s->own_disconnect_req = 1;
wpa_supplicant_deauthenticate(
wpa_s, WLAN_REASON_DEAUTH_LEAVING);
}
if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
return -1;
}
if (new_scan)
wpa_supplicant_rsn_preauth_scan_results(wpa_s);
/*
* Do not allow other virtual radios to trigger operations based
* on these scan results since we do not want them to start
* other associations at the same time.
*/
return 1;
} else {
wpa_s->no_suitable_network++;
wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
ssid = wpa_supplicant_pick_new_network(wpa_s);
if (ssid) {
wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
wpa_supplicant_associate(wpa_s, NULL, ssid);
if (new_scan)
wpa_supplicant_rsn_preauth_scan_results(wpa_s);
} else if (own_request) {
/*
* No SSID found. If SCAN results are as a result of
* own scan request and not due to a scan request on
* another shared interface, try another scan.
*/
int timeout_sec = wpa_s->scan_interval;
int timeout_usec = 0;
#ifdef CONFIG_P2P
int res;
res = wpas_p2p_scan_no_go_seen(wpa_s);
if (res == 2)
return 2;
if (res == 1)
return 0;
if (wpa_s->p2p_in_provisioning ||
wpa_s->show_group_started ||
wpa_s->p2p_in_invitation) {
/*
* Use shorter wait during P2P Provisioning
* state and during P2P join-a-group operation
* to speed up group formation.
*/
timeout_sec = 0;
timeout_usec = 250000;
wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
timeout_usec);
return 0;
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_INTERWORKING
if (wpa_s->conf->auto_interworking &&
wpa_s->conf->interworking &&
wpa_s->conf->cred) {
wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
"start ANQP fetch since no matching "
"networks found");
wpa_s->network_select = 1;
wpa_s->auto_network_select = 1;
interworking_start_fetch_anqp(wpa_s);
return 1;
}
#endif /* CONFIG_INTERWORKING */
#ifdef CONFIG_WPS
if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
timeout_sec = 0;
timeout_usec = 500000;
wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
timeout_usec);
return 0;
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_OWE
if (wpa_s->owe_transition_search) {
wpa_dbg(wpa_s, MSG_DEBUG,
"OWE: Use shorter wait during transition mode search");
timeout_sec = 0;
timeout_usec = 500000;
wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
timeout_usec);
return 0;
}
#endif /* CONFIG_OWE */
if (wpa_supplicant_req_sched_scan(wpa_s))
wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
timeout_usec);
wpa_msg_ctrl(wpa_s, MSG_INFO,
WPA_EVENT_NETWORK_NOT_FOUND);
}
}
return 0;
}
static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
struct wpa_supplicant *ifs;
int res;
res = _wpa_supplicant_event_scan_results(wpa_s, data, 1, 0);
if (res == 2) {
/*
* Interface may have been removed, so must not dereference
* wpa_s after this.
*/
return 1;
}
if (res < 0) {
/*
* If no scan results could be fetched, then no need to
* notify those interfaces that did not actually request
* this scan. Similarly, if scan results started a new operation on this
* interface, do not notify other interfaces to avoid concurrent
* operations during a connection attempt.
*/
return 0;
}
/*
* Check other interfaces to see if they share the same radio. If
* so, they get updated with this same scan info.
*/
dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
radio_list) {
if (ifs != wpa_s) {
wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
"sibling", ifs->ifname);
res = _wpa_supplicant_event_scan_results(ifs, data, 0,
res > 0);
if (res < 0)
return 0;
}
}
return 0;
}
#endif /* CONFIG_NO_SCAN_PROCESSING */
int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
{
#ifdef CONFIG_NO_SCAN_PROCESSING
return -1;
#else /* CONFIG_NO_SCAN_PROCESSING */
struct os_reltime now;
wpa_s->ignore_post_flush_scan_res = 0;
if (wpa_s->last_scan_res_used == 0)
return -1;
os_get_reltime(&now);
if (os_reltime_expired(&now, &wpa_s->last_scan,
SCAN_RES_VALID_FOR_CONNECT)) {
wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
return -1;
}
return wpas_select_network_from_last_scan(wpa_s, 0, 1);
#endif /* CONFIG_NO_SCAN_PROCESSING */
}
#ifdef CONFIG_WNM
static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
if (wpa_s->wpa_state < WPA_ASSOCIATED)
return;
if (!wpa_s->no_keep_alive) {
wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
MAC2STR(wpa_s->bssid));
/* TODO: could skip this if normal data traffic has been sent */
/* TODO: Consider using some more appropriate data frame for
* this */
if (wpa_s->l2)
l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
(u8 *) "", 0);
}
#ifdef CONFIG_SME
if (wpa_s->sme.bss_max_idle_period) {
unsigned int msec;
msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
if (msec > 100)
msec -= 100;
eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
wnm_bss_keep_alive, wpa_s, NULL);
}
#endif /* CONFIG_SME */
}
static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
const u8 *ies, size_t ies_len)
{
struct ieee802_11_elems elems;
if (ies == NULL)
return;
if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
return;
#ifdef CONFIG_SME
if (elems.bss_max_idle_period) {
unsigned int msec;
wpa_s->sme.bss_max_idle_period =
WPA_GET_LE16(elems.bss_max_idle_period);
wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
"TU)%s", wpa_s->sme.bss_max_idle_period,
(elems.bss_max_idle_period[2] & 0x01) ?
" (protected keep-live required)" : "");
if (wpa_s->sme.bss_max_idle_period == 0)
wpa_s->sme.bss_max_idle_period = 1;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
/* msec times 1000 */
msec = wpa_s->sme.bss_max_idle_period * 1024;
if (msec > 100)
msec -= 100;
eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
wnm_bss_keep_alive, wpa_s,
NULL);
}
}
#endif /* CONFIG_SME */
}
#endif /* CONFIG_WNM */
void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
{
#ifdef CONFIG_WNM
eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
#endif /* CONFIG_WNM */
}
#ifdef CONFIG_INTERWORKING
static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
size_t len)
{
int res;
wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
if (res) {
wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
}
return res;
}
static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
const u8 *ies, size_t ies_len)
{
struct ieee802_11_elems elems;
if (ies == NULL)
return;
if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
return;
if (elems.qos_map_set) {
wpas_qos_map_set(wpa_s, elems.qos_map_set,
elems.qos_map_set_len);
}
}
#endif /* CONFIG_INTERWORKING */
static void multi_ap_process_assoc_resp(struct wpa_supplicant *wpa_s,
const u8 *ies, size_t ies_len)
{
struct ieee802_11_elems elems;
const u8 *map_sub_elem, *pos;
size_t len;
if (!wpa_s->current_ssid ||
!wpa_s->current_ssid->multi_ap_backhaul_sta ||
!ies ||
ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
return;
if (!elems.multi_ap || elems.multi_ap_len < 7) {
wpa_printf(MSG_INFO, "AP doesn't support Multi-AP protocol");
goto fail;
}
pos = elems.multi_ap + 4;
len = elems.multi_ap_len - 4;
map_sub_elem = get_ie(pos, len, MULTI_AP_SUB_ELEM_TYPE);
if (!map_sub_elem || map_sub_elem[1] < 1) {
wpa_printf(MSG_INFO, "invalid Multi-AP sub elem type");
goto fail;
}
if (!(map_sub_elem[2] & MULTI_AP_BACKHAUL_BSS)) {
if ((map_sub_elem[2] & MULTI_AP_FRONTHAUL_BSS) &&
wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
wpa_printf(MSG_INFO,
"WPS active, accepting fronthaul-only BSS");
/* Don't set 4addr mode in this case, so just return */
return;
}
wpa_printf(MSG_INFO, "AP doesn't support backhaul BSS");
goto fail;
}
if (wpa_drv_set_4addr_mode(wpa_s, 1) < 0) {
wpa_printf(MSG_ERROR, "Failed to set 4addr mode");
goto fail;
}
wpa_s->enabled_4addr_mode = 1;
return;
fail:
wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
}
#ifdef CONFIG_FST
static int wpas_fst_update_mbie(struct wpa_supplicant *wpa_s,
const u8 *ie, size_t ie_len)
{
struct mb_ies_info mb_ies;
if (!ie || !ie_len || !wpa_s->fst)
return -ENOENT;
os_memset(&mb_ies, 0, sizeof(mb_ies));
while (ie_len >= 2 && mb_ies.nof_ies < MAX_NOF_MB_IES_SUPPORTED) {
size_t len;
len = 2 + ie[1];
if (len > ie_len) {
wpa_hexdump(MSG_DEBUG, "FST: Truncated IE found",
ie, ie_len);
break;
}
if (ie[0] == WLAN_EID_MULTI_BAND) {
wpa_printf(MSG_DEBUG, "MB IE of %u bytes found",
(unsigned int) len);
mb_ies.ies[mb_ies.nof_ies].ie = ie + 2;
mb_ies.ies[mb_ies.nof_ies].ie_len = len - 2;
mb_ies.nof_ies++;
}
ie_len -= len;
ie += len;
}
if (mb_ies.nof_ies > 0) {
wpabuf_free(wpa_s->received_mb_ies);
wpa_s->received_mb_ies = mb_ies_by_info(&mb_ies);
return 0;
}
return -ENOENT;
}
#endif /* CONFIG_FST */
static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
int l, len, found = 0, found_x = 0, wpa_found, rsn_found;
const u8 *p;
#if defined(CONFIG_IEEE80211R) || defined(CONFIG_OWE)
u8 bssid[ETH_ALEN];
#endif /* CONFIG_IEEE80211R || CONFIG_OWE */
wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
if (data->assoc_info.req_ies)
wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
data->assoc_info.req_ies_len);
if (data->assoc_info.resp_ies) {
wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len);
#ifdef CONFIG_TDLS
wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len);
#endif /* CONFIG_TDLS */
#ifdef CONFIG_WNM
wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len);
#endif /* CONFIG_WNM */
#ifdef CONFIG_INTERWORKING
interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len);
#endif /* CONFIG_INTERWORKING */
if (wpa_s->hw_capab == CAPAB_VHT &&
get_ie(data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len, WLAN_EID_VHT_CAP))
wpa_s->ieee80211ac = 1;
multi_ap_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len);
}
if (data->assoc_info.beacon_ies)
wpa_hexdump(MSG_DEBUG, "beacon_ies",
data->assoc_info.beacon_ies,
data->assoc_info.beacon_ies_len);
if (data->assoc_info.freq)
wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
data->assoc_info.freq);
wpa_s->connection_set = 0;
if (data->assoc_info.req_ies && data->assoc_info.resp_ies) {
struct ieee802_11_elems req_elems, resp_elems;
if (ieee802_11_parse_elems(data->assoc_info.req_ies,
data->assoc_info.req_ies_len,
&req_elems, 0) != ParseFailed &&
ieee802_11_parse_elems(data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len,
&resp_elems, 0) != ParseFailed) {
wpa_s->connection_set = 1;
wpa_s->connection_ht = req_elems.ht_capabilities &&
resp_elems.ht_capabilities;
/* Do not include subset of VHT on 2.4 GHz vendor
* extension in consideration for reporting VHT
* association. */
wpa_s->connection_vht = req_elems.vht_capabilities &&
resp_elems.vht_capabilities &&
(!data->assoc_info.freq ||
wpas_freq_to_band(data->assoc_info.freq) !=
BAND_2_4_GHZ);
wpa_s->connection_he = req_elems.he_capabilities &&
resp_elems.he_capabilities;
}
}
p = data->assoc_info.req_ies;
l = data->assoc_info.req_ies_len;
/* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
while (p && l >= 2) {
len = p[1] + 2;
if (len > l) {
wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
p, l);
break;
}
if (!found &&
((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
(os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
(p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 4 &&
(os_memcmp(&p[2], "\x50\x6F\x9A\x12", 4) == 0)) ||
(p[0] == WLAN_EID_RSN && p[1] >= 2))) {
if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
break;
found = 1;
wpa_find_assoc_pmkid(wpa_s);
}
if (!found_x && p[0] == WLAN_EID_RSNX) {
if (wpa_sm_set_assoc_rsnxe(wpa_s->wpa, p, len))
break;
found_x = 1;
}
l -= len;
p += len;
}
if (!found && data->assoc_info.req_ies)
wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
if (!found_x && data->assoc_info.req_ies)
wpa_sm_set_assoc_rsnxe(wpa_s->wpa, NULL, 0);
#ifdef CONFIG_FILS
#ifdef CONFIG_SME
if ((wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS ||
wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS_SK_PFS) &&
(!data->assoc_info.resp_frame ||
fils_process_assoc_resp(wpa_s->wpa,
data->assoc_info.resp_frame,
data->assoc_info.resp_frame_len) < 0)) {
wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_UNSPECIFIED);
return -1;
}
#endif /* CONFIG_SME */
/* Additional processing for FILS when SME is in driver */
if (wpa_s->auth_alg == WPA_AUTH_ALG_FILS &&
!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
wpa_sm_set_reset_fils_completed(wpa_s->wpa, 1);
#endif /* CONFIG_FILS */
#ifdef CONFIG_OWE
if (wpa_s->key_mgmt == WPA_KEY_MGMT_OWE &&
(wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
owe_process_assoc_resp(wpa_s->wpa, bssid,
data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len) < 0)) {
wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_UNSPECIFIED);
return -1;
}
#endif /* CONFIG_OWE */
#ifdef CONFIG_DPP2
wpa_sm_set_dpp_z(wpa_s->wpa, NULL);
if (wpa_s->key_mgmt == WPA_KEY_MGMT_DPP && wpa_s->dpp_pfs) {
struct ieee802_11_elems elems;
if (ieee802_11_parse_elems(data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len,
&elems, 0) == ParseFailed ||
!elems.owe_dh)
goto no_pfs;
if (dpp_pfs_process(wpa_s->dpp_pfs, elems.owe_dh,
elems.owe_dh_len) < 0) {
wpa_supplicant_deauthenticate(wpa_s,
WLAN_REASON_UNSPECIFIED);
return -1;
}
wpa_sm_set_dpp_z(wpa_s->wpa, wpa_s->dpp_pfs->secret);
}
no_pfs:
#endif /* CONFIG_DPP2 */
#ifdef CONFIG_IEEE80211R
#ifdef CONFIG_SME
if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
wpa_ft_validate_reassoc_resp(wpa_s->wpa,
data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len,
bssid) < 0) {
wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
"Reassociation Response failed");
wpa_supplicant_deauthenticate(
wpa_s, WLAN_REASON_INVALID_IE);
return -1;
}
}
p = data->assoc_info.resp_ies;
l = data->assoc_info.resp_ies_len;
#ifdef CONFIG_WPS_STRICT
if (p && wpa_s->current_ssid &&
wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
struct wpabuf *wps;
wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
if (wps == NULL) {
wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
"include WPS IE in (Re)Association Response");
return -1;
}
if (wps_validate_assoc_resp(wps) < 0) {
wpabuf_free(wps);
wpa_supplicant_deauthenticate(
wpa_s, WLAN_REASON_INVALID_IE);
return -1;
}
wpabuf_free(wps);
}
#endif /* CONFIG_WPS_STRICT */
/* Go through the IEs and make a copy of the MDIE, if present. */
while (p && l >= 2) {
len = p[1] + 2;
if (len > l) {
wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
p, l);
break;
}
if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
p[1] >= MOBILITY_DOMAIN_ID_LEN) {
wpa_s->sme.ft_used = 1;
os_memcpy(wpa_s->sme.mobility_domain, p + 2,
MOBILITY_DOMAIN_ID_LEN);
break;
}
l -= len;
p += len;
}
#endif /* CONFIG_SME */
/* Process FT when SME is in the driver */
if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
wpa_ft_is_completed(wpa_s->wpa)) {
if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
wpa_ft_validate_reassoc_resp(wpa_s->wpa,
data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len,
bssid) < 0) {
wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
"Reassociation Response failed");
wpa_supplicant_deauthenticate(
wpa_s, WLAN_REASON_INVALID_IE);
return -1;
}
wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
}
wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len);
#endif /* CONFIG_IEEE80211R */
/* WPA/RSN IE from Beacon/ProbeResp */
p = data->assoc_info.beacon_ies;
l = data->assoc_info.beacon_ies_len;
/* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
*/
wpa_found = rsn_found = 0;
while (p && l >= 2) {
len = p[1] + 2;
if (len > l) {
wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
p, l);
break;
}
if (!wpa_found &&
p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
wpa_found = 1;
wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
}
if (!rsn_found &&
p[0] == WLAN_EID_RSN && p[1] >= 2) {
rsn_found = 1;
wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
}
if (p[0] == WLAN_EID_RSNX && p[1] >= 1)
wpa_sm_set_ap_rsnxe(wpa_s->wpa, p, len);
l -= len;
p += len;
}
if (!wpa_found && data->assoc_info.beacon_ies)
wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
if (!rsn_found && data->assoc_info.beacon_ies) {
wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
wpa_sm_set_ap_rsnxe(wpa_s->wpa, NULL, 0);
}
if (wpa_found || rsn_found)
wpa_s->ap_ies_from_associnfo = 1;
if (wpa_s->assoc_freq && data->assoc_info.freq &&
wpa_s->assoc_freq != data->assoc_info.freq) {
wpa_printf(MSG_DEBUG, "Operating frequency changed from "
"%u to %u MHz",
wpa_s->assoc_freq, data->assoc_info.freq);
wpa_supplicant_update_scan_results(wpa_s);
}
wpa_s->assoc_freq = data->assoc_info.freq;
return 0;
}
static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
{
const u8 *bss_wpa = NULL, *bss_rsn = NULL, *bss_rsnx = NULL;
if (!wpa_s->current_bss || !wpa_s->current_ssid)
return -1;
if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
return 0;
bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
WPA_IE_VENDOR_TYPE);
bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
bss_rsnx = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSNX);
if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
bss_wpa ? 2 + bss_wpa[1] : 0) ||
wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
bss_rsn ? 2 + bss_rsn[1] : 0) ||
wpa_sm_set_ap_rsnxe(wpa_s->wpa, bss_rsnx,
bss_rsnx ? 2 + bss_rsnx[1] : 0))
return -1;
return 0;
}
static void wpas_fst_update_mb_assoc(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
#ifdef CONFIG_FST
struct assoc_info *ai = data ? &data->assoc_info : NULL;
struct wpa_bss *bss = wpa_s->current_bss;
const u8 *ieprb, *iebcn;
wpabuf_free(wpa_s->received_mb_ies);
wpa_s->received_mb_ies = NULL;
if (ai &&
!wpas_fst_update_mbie(wpa_s, ai->resp_ies, ai->resp_ies_len)) {
wpa_printf(MSG_DEBUG,
"FST: MB IEs updated from Association Response frame");
return;
}
if (ai &&
!wpas_fst_update_mbie(wpa_s, ai->beacon_ies, ai->beacon_ies_len)) {
wpa_printf(MSG_DEBUG,
"FST: MB IEs updated from association event Beacon IEs");
return;
}
if (!bss)
return;
ieprb = (const u8 *) (bss + 1);
iebcn = ieprb + bss->ie_len;
if (!wpas_fst_update_mbie(wpa_s, ieprb, bss->ie_len))
wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss IE");
else if (!wpas_fst_update_mbie(wpa_s, iebcn, bss->beacon_ie_len))
wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss beacon IE");
#endif /* CONFIG_FST */
}
static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
u8 bssid[ETH_ALEN];
int ft_completed, already_authorized;
int new_bss = 0;
#if defined(CONFIG_FILS) || defined(CONFIG_MBO)
struct wpa_bss *bss;
#endif /* CONFIG_FILS || CONFIG_MBO */
#ifdef CONFIG_AP
if (wpa_s->ap_iface) {
if (!data)
return;
hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
data->assoc_info.addr,
data->assoc_info.req_ies,
data->assoc_info.req_ies_len,
data->assoc_info.reassoc);
return;
}
#endif /* CONFIG_AP */
eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
wpa_s->own_reconnect_req = 0;
ft_completed = wpa_ft_is_completed(wpa_s->wpa);
if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
return;
/*
* FILS authentication can share the same mechanism to mark the
* connection fully authenticated, so set ft_completed also based on
* FILS result.
*/
if (!ft_completed)
ft_completed = wpa_fils_is_completed(wpa_s->wpa);
if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
wpa_supplicant_deauthenticate(
wpa_s, WLAN_REASON_DEAUTH_LEAVING);
return;
}
wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
if (os_reltime_initialized(&wpa_s->session_start)) {
os_reltime_age(&wpa_s->session_start,
&wpa_s->session_length);
wpa_s->session_start.sec = 0;
wpa_s->session_start.usec = 0;
wpas_notify_session_length(wpa_s);
} else {
wpas_notify_auth_changed(wpa_s);
os_get_reltime(&wpa_s->session_start);
}
wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
MACSTR, MAC2STR(bssid));
new_bss = 1;
random_add_randomness(bssid, ETH_ALEN);
os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
wpas_notify_bssid_changed(wpa_s);
if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
wpa_clear_keys(wpa_s, bssid);
}
if (wpa_supplicant_select_config(wpa_s) < 0) {
wpa_supplicant_deauthenticate(
wpa_s, WLAN_REASON_DEAUTH_LEAVING);
return;
}
}
if (wpa_s->conf->ap_scan == 1 &&
wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
if (wpa_supplicant_assoc_update_ie(wpa_s) < 0 && new_bss)
wpa_msg(wpa_s, MSG_WARNING,
"WPA/RSN IEs not updated");
}
wpas_fst_update_mb_assoc(wpa_s, data);
#ifdef CONFIG_SME
os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
wpa_s->sme.prev_bssid_set = 1;
wpa_s->sme.last_unprot_disconnect.sec = 0;
#endif /* CONFIG_SME */
wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
if (wpa_s->current_ssid) {
/* When using scanning (ap_scan=1), SIM PC/SC interface can be
* initialized before association, but for other modes,
* initialize PC/SC here, if the current configuration needs
* smartcard or SIM/USIM. */
wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
}
wpa_sm_notify_assoc(wpa_s->wpa, bssid);
if (wpa_s->l2)
l2_packet_notify_auth_start(wpa_s->l2);
already_authorized = data && data->assoc_info.authorized;
/*
* Set portEnabled first to FALSE in order to get EAP state machine out
* of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
* state machine may transit to AUTHENTICATING state based on obsolete
* eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
* AUTHENTICATED without ever giving chance to EAP state machine to
* reset the state.
*/
if (!ft_completed && !already_authorized) {
eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
}
if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
wpa_s->key_mgmt == WPA_KEY_MGMT_DPP ||
wpa_s->key_mgmt == WPA_KEY_MGMT_OWE || ft_completed ||
already_authorized || wpa_s->drv_authorized_port)
eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
/* 802.1X::portControl = Auto */
eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
wpa_s->eapol_received = 0;
if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
(wpa_s->current_ssid &&
wpa_s->current_ssid->mode == WPAS_MODE_IBSS)) {
if (wpa_s->current_ssid &&
wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
(wpa_s->drv_flags &
WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
/*
* Set the key after having received joined-IBSS event
* from the driver.
*/
wpa_supplicant_set_wpa_none_key(wpa_s,
wpa_s->current_ssid);
}
wpa_supplicant_cancel_auth_timeout(wpa_s);
wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
} else if (!ft_completed) {
/* Timeout for receiving the first EAPOL packet */
wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
}
wpa_supplicant_cancel_scan(wpa_s);
if (ft_completed) {
/*
* FT protocol completed - make sure EAPOL state machine ends
* up in authenticated.
*/
wpa_supplicant_cancel_auth_timeout(wpa_s);
wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
} else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE_PSK) &&
wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
/*
* We are done; the driver will take care of RSN 4-way
* handshake.
*/
wpa_supplicant_cancel_auth_timeout(wpa_s);
wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
} else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE_8021X) &&
wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
/*
* The driver will take care of RSN 4-way handshake, so we need
* to allow EAPOL supplicant to complete its work without
* waiting for WPA supplicant.
*/
eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
}
wpa_s->last_eapol_matches_bssid = 0;
#ifdef CONFIG_TESTING_OPTIONS
if (wpa_s->rsnxe_override_eapol) {
wpa_printf(MSG_DEBUG,
"TESTING: RSNXE EAPOL-Key msg 2/4 override");
wpa_sm_set_assoc_rsnxe(wpa_s->wpa,
wpabuf_head(wpa_s->rsnxe_override_eapol),
wpabuf_len(wpa_s->rsnxe_override_eapol));
}
#endif /* CONFIG_TESTING_OPTIONS */
if (wpa_s->pending_eapol_rx) {
struct os_reltime now, age;
os_get_reltime(&now);
os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
if (age.sec == 0 && age.usec < 200000 &&
os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
0) {
wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
"frame that was received just before "
"association notification");
wpa_supplicant_rx_eapol(
wpa_s, wpa_s->pending_eapol_rx_src,
wpabuf_head(wpa_s->pending_eapol_rx),
wpabuf_len(wpa_s->pending_eapol_rx));
}
wpabuf_free(wpa_s->pending_eapol_rx);
wpa_s->pending_eapol_rx = NULL;
}
#ifdef CONFIG_WEP
if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
wpa_s->current_ssid &&
(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
/* Set static WEP keys again */
wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
}
#endif /* CONFIG_WEP */
#ifdef CONFIG_IBSS_RSN
if (wpa_s->current_ssid &&
wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
wpa_s->ibss_rsn == NULL) {
wpa_s->ibss_rsn = ibss_rsn_init(wpa_s, wpa_s->current_ssid);
if (!wpa_s->ibss_rsn) {
wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
wpa_supplicant_deauthenticate(
wpa_s, WLAN_REASON_DEAUTH_LEAVING);
return;
}
ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
}
#endif /* CONFIG_IBSS_RSN */
wpas_wps_notify_assoc(wpa_s, bssid);
if (data) {
wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
data->assoc_info.resp_ies_len,
&data->assoc_info.wmm_params);
if (wpa_s->reassoc_same_bss)
wmm_ac_restore_tspecs(wpa_s);
}
#if defined(CONFIG_FILS) || defined(CONFIG_MBO)
bss = wpa_bss_get_bssid(wpa_s, bssid);
#endif /* CONFIG_FILS || CONFIG_MBO */
#ifdef CONFIG_FILS
if (wpa_key_mgmt_fils(wpa_s->key_mgmt)) {
const u8 *fils_cache_id = wpa_bss_get_fils_cache_id(bss);
if (fils_cache_id)
wpa_sm_set_fils_cache_id(wpa_s->wpa, fils_cache_id);
}
#endif /* CONFIG_FILS */
#ifdef CONFIG_MBO
wpas_mbo_check_pmf(wpa_s, bss, wpa_s->current_ssid);
#endif /* CONFIG_MBO */
}
static int disconnect_reason_recoverable(u16 reason_code)
{
return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
}
static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
u16 reason_code,
int locally_generated)
{
const u8 *bssid;
if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
/*
* At least Host AP driver and a Prism3 card seemed to be
* generating streams of disconnected events when configuring
* IBSS for WPA-None. Ignore them for now.
*/
return;
}
bssid = wpa_s->bssid;
if (is_zero_ether_addr(bssid))
bssid = wpa_s->pending_bssid;
if (!is_zero_ether_addr(bssid) ||
wpa_s->wpa_state >= WPA_AUTHENTICATING) {
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
" reason=%d%s",
MAC2STR(bssid), reason_code,
locally_generated ? " locally_generated=1" : "");
}
}
static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
int locally_generated)
{
if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
!wpa_s->new_connection ||
!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
wpa_key_mgmt_sae(wpa_s->key_mgmt))
return 0; /* Not in initial 4-way handshake with PSK */
/*
* It looks like connection was lost while trying to go through PSK
* 4-way handshake. Filter out known disconnection cases that are caused
* by something else than PSK mismatch to avoid confusing reports.
*/
if (locally_generated) {
if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
return 0;
}
return 1;
}
static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
u16 reason_code,
int locally_generated)
{
const u8 *bssid;
int authenticating;
u8 prev_pending_bssid[ETH_ALEN];
struct wpa_bss *fast_reconnect = NULL;
struct wpa_ssid *fast_reconnect_ssid = NULL;
struct wpa_ssid *last_ssid;
struct wpa_bss *curr = NULL;
authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
/*
* At least Host AP driver and a Prism3 card seemed to be
* generating streams of disconnected events when configuring
* IBSS for WPA-None. Ignore them for now.
*/
wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
"IBSS/WPA-None mode");
return;
}
if (!wpa_s->disconnected && wpa_s->wpa_state >= WPA_AUTHENTICATING &&
reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY &&
locally_generated)
/*
* Remove the inactive AP (which is probably out of range) from
* the BSS list after marking disassociation. In particular
* mac80211-based drivers use the
* WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY reason code in
* locally generated disconnection events for cases where the
* AP does not reply anymore.
*/
curr = wpa_s->current_bss;
if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
"pre-shared key may be incorrect");
if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
return; /* P2P group removed */
wpas_auth_failed(wpa_s, "WRONG_KEY");
#ifdef CONFIG_DPP2
wpas_dpp_send_conn_status_result(wpa_s,
DPP_STATUS_AUTH_FAILURE);
#endif /* CONFIG_DPP2 */
}
if (!wpa_s->disconnected &&
(!wpa_s->auto_reconnect_disabled ||
wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
wpas_wps_searching(wpa_s) ||
wpas_wps_reenable_networks_pending(wpa_s))) {
wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
"reconnect (wps=%d/%d wpa_state=%d)",
wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
wpas_wps_searching(wpa_s),
wpa_s->wpa_state);
if (wpa_s->wpa_state == WPA_COMPLETED &&
wpa_s->current_ssid &&
wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
(wpa_s->own_reconnect_req ||
(!locally_generated &&
disconnect_reason_recoverable(reason_code)))) {
/*
* It looks like the AP has dropped association with
* us, but could allow us to get back in. This is also
* triggered for cases where local reconnection request
* is used to force reassociation with the same BSS.
* Try to reconnect to the same BSS without a full scan
* to save time for some common cases.
*/
fast_reconnect = wpa_s->current_bss;
fast_reconnect_ssid = wpa_s->current_ssid;
} else if (wpa_s->wpa_state >= WPA_ASSOCIATING) {
wpa_supplicant_req_scan(wpa_s, 0, 100000);
} else {
wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
"immediate scan");
}
} else {
wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
"try to re-connect");
wpa_s->reassociate = 0;
wpa_s->disconnected = 1;
if (!wpa_s->pno)
wpa_supplicant_cancel_sched_scan(wpa_s);
}
bssid = wpa_s->bssid;
if (is_zero_ether_addr(bssid))
bssid = wpa_s->pending_bssid;
if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
wpas_connection_failed(wpa_s, bssid);
wpa_sm_notify_disassoc(wpa_s->wpa);
if (locally_generated)
wpa_s->disconnect_reason = -reason_code;
else
wpa_s->disconnect_reason = reason_code;
wpas_notify_disconnect_reason(wpa_s);
if (wpa_supplicant_dynamic_keys(wpa_s)) {
wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
wpa_clear_keys(wpa_s, wpa_s->bssid);
}
last_ssid = wpa_s->current_ssid;
wpa_supplicant_mark_disassoc(wpa_s);
if (curr)
wpa_bss_remove(wpa_s, curr, "Connection to AP lost");
if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
wpa_s->current_ssid = last_ssid;
}
if (fast_reconnect &&
!wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
!disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
!disallowed_ssid(wpa_s, fast_reconnect->ssid,
fast_reconnect->ssid_len) &&
!wpas_temp_disabled(wpa_s, fast_reconnect_ssid) &&
!wpa_is_bss_tmp_disallowed(wpa_s, fast_reconnect)) {
#ifndef CONFIG_NO_SCAN_PROCESSING
wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
if (wpa_supplicant_connect(wpa_s, fast_reconnect,
fast_reconnect_ssid) < 0) {
/* Recover through full scan */
wpa_supplicant_req_scan(wpa_s, 0, 100000);
}
#endif /* CONFIG_NO_SCAN_PROCESSING */
} else if (fast_reconnect) {
/*
* Could not reconnect to the same BSS due to network being
* disabled. Use a new scan to match the alternative behavior
* above, i.e., to continue automatic reconnection attempt in a
* way that enforces disabled network rules.
*/
wpa_supplicant_req_scan(wpa_s, 0, 100000);
}
}
#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
if (!wpa_s->pending_mic_error_report)
return;
wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
wpa_s->pending_mic_error_report = 0;
}
#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
static void
wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
int pairwise;
struct os_reltime t;
wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
pairwise = (data && data->michael_mic_failure.unicast);
os_get_reltime(&t);
if ((wpa_s->last_michael_mic_error.sec &&
!os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
wpa_s->pending_mic_error_report) {
if (wpa_s->pending_mic_error_report) {
/*
* Send the pending MIC error report immediately since
* we are going to start countermeasures and AP better
* do the same.
*/
wpa_sm_key_request(wpa_s->wpa, 1,
wpa_s->pending_mic_error_pairwise);
}
/* Send the new MIC error report immediately since we are going
* to start countermeasures and AP better do the same.
*/
wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
/* initialize countermeasures */
wpa_s->countermeasures = 1;
wpa_blacklist_add(wpa_s, wpa_s->bssid);
wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
/*
* Need to wait for completion of request frame. We do not get
* any callback for the message completion, so just wait a
* short while and hope for the best. */
os_sleep(0, 10000);
wpa_drv_set_countermeasures(wpa_s, 1);
wpa_supplicant_deauthenticate(wpa_s,
WLAN_REASON_MICHAEL_MIC_FAILURE);
eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
wpa_s, NULL);
eloop_register_timeout(60, 0,
wpa_supplicant_stop_countermeasures,
wpa_s, NULL);
/* TODO: mark the AP rejected for 60 second. STA is
* allowed to associate with another AP.. */
} else {
#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
if (wpa_s->mic_errors_seen) {
/*
* Reduce the effectiveness of Michael MIC error
* reports as a means for attacking against TKIP if
* more than one MIC failure is noticed with the same
* PTK. We delay the transmission of the reports by a
* random time between 0 and 60 seconds in order to
* force the attacker wait 60 seconds before getting
* the information on whether a frame resulted in a MIC
* failure.
*/
u8 rval[4];
int sec;
if (os_get_random(rval, sizeof(rval)) < 0)
sec = os_random() % 60;
else
sec = WPA_GET_BE32(rval) % 60;
wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
"report %d seconds", sec);
wpa_s->pending_mic_error_report = 1;
wpa_s->pending_mic_error_pairwise = pairwise;
eloop_cancel_timeout(
wpa_supplicant_delayed_mic_error_report,
wpa_s, NULL);
eloop_register_timeout(
sec, os_random() % 1000000,
wpa_supplicant_delayed_mic_error_report,
wpa_s, NULL);
} else {
wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
}
#else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
}
wpa_s->last_michael_mic_error = t;
wpa_s->mic_errors_seen++;
}
#ifdef CONFIG_TERMINATE_ONLASTIF
static int any_interfaces(struct wpa_supplicant *head)
{
struct wpa_supplicant *wpa_s;
for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
if (!wpa_s->interface_removed)
return 1;
return 0;
}
#endif /* CONFIG_TERMINATE_ONLASTIF */
static void
wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
return;
switch (data->interface_status.ievent) {
case EVENT_INTERFACE_ADDED:
if (!wpa_s->interface_removed)
break;
wpa_s->interface_removed = 0;
wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
if (wpa_supplicant_driver_init(wpa_s) < 0) {
wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
"driver after interface was added");
}
#ifdef CONFIG_P2P
if (!wpa_s->global->p2p &&
!wpa_s->global->p2p_disabled &&
!wpa_s->conf->p2p_disabled &&
(wpa_s->drv_flags &
WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
wpas_p2p_add_p2pdev_interface(
wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) {
wpa_printf(MSG_INFO,
"P2P: Failed to enable P2P Device interface");
/* Try to continue without. P2P will be disabled. */
}
#endif /* CONFIG_P2P */
break;
case EVENT_INTERFACE_REMOVED:
wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
wpa_s->interface_removed = 1;
wpa_supplicant_mark_disassoc(wpa_s);
wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
l2_packet_deinit(wpa_s->l2);
wpa_s->l2 = NULL;
#ifdef CONFIG_P2P
if (wpa_s->global->p2p &&
wpa_s->global->p2p_init_wpa_s->parent == wpa_s &&
(wpa_s->drv_flags &
WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) {
wpa_dbg(wpa_s, MSG_DEBUG,
"Removing P2P Device interface");
wpa_supplicant_remove_iface(
wpa_s->global, wpa_s->global->p2p_init_wpa_s,
0);
wpa_s->global->p2p_init_wpa_s = NULL;
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_MATCH_IFACE
if (wpa_s->matched) {
wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
break;
}
#endif /* CONFIG_MATCH_IFACE */
#ifdef CONFIG_TERMINATE_ONLASTIF
/* check if last interface */
if (!any_interfaces(wpa_s->global->ifaces))
eloop_terminate();
#endif /* CONFIG_TERMINATE_ONLASTIF */
break;
}
}
#ifdef CONFIG_TDLS
static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
if (data == NULL)
return;
switch (data->tdls.oper) {
case TDLS_REQUEST_SETUP:
wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
if (wpa_tdls_is_external_setup(wpa_s->wpa))
wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
else
wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
break;
case TDLS_REQUEST_TEARDOWN:
if (wpa_tdls_is_external_setup(wpa_s->wpa))
wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
data->tdls.reason_code);
else
wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
data->tdls.peer);
break;
case TDLS_REQUEST_DISCOVER:
wpa_tdls_send_discovery_request(wpa_s->wpa,
data->tdls.peer);
break;
}
}
#endif /* CONFIG_TDLS */
#ifdef CONFIG_WNM
static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
if (data == NULL)
return;
switch (data->wnm.oper) {
case WNM_OPER_SLEEP:
wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
"(action=%d, intval=%d)",
data->wnm.sleep_action, data->wnm.sleep_intval);
ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
data->wnm.sleep_intval, NULL);
break;
}
}
#endif /* CONFIG_WNM */
#ifdef CONFIG_IEEE80211R
static void
wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
if (data == NULL)
return;
if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
data->ft_ies.ies_len,
data->ft_ies.ft_action,
data->ft_ies.target_ap,
data->ft_ies.ric_ies,
data->ft_ies.ric_ies_len) < 0) {
/* TODO: prevent MLME/driver from trying to associate? */
}
}
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IBSS_RSN
static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
struct wpa_ssid *ssid;
if (wpa_s->wpa_state < WPA_ASSOCIATED)
return;
if (data == NULL)
return;
ssid = wpa_s->current_ssid;
if (ssid == NULL)
return;
if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
return;
ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
}
static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
struct wpa_ssid *ssid = wpa_s->current_ssid;
if (ssid == NULL)
return;
/* check if the ssid is correctly configured as IBSS/RSN */
if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
return;
ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
data->rx_mgmt.frame_len);
}
#endif /* CONFIG_IBSS_RSN */
#ifdef CONFIG_IEEE80211R
static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
size_t len)
{
const u8 *sta_addr, *target_ap_addr;
u16 status;
wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
return; /* only SME case supported for now */
if (len < 1 + 2 * ETH_ALEN + 2)
return;
if (data[0] != 2)
return; /* Only FT Action Response is supported for now */
sta_addr = data + 1;
target_ap_addr = data + 1 + ETH_ALEN;
status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
MACSTR " TargetAP " MACSTR " status %u",
MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
" in FT Action Response", MAC2STR(sta_addr));
return;
}
if (status) {
wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
"failure (status code %d)", status);
/* TODO: report error to FT code(?) */
return;
}
if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
len - (1 + 2 * ETH_ALEN + 2), 1,
target_ap_addr, NULL, 0) < 0)
return;
#ifdef CONFIG_SME
{
struct wpa_bss *bss;
bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
if (bss)
wpa_s->sme.freq = bss->freq;
wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
WLAN_AUTH_FT);
}
#endif /* CONFIG_SME */
}
#endif /* CONFIG_IEEE80211R */
static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
struct unprot_deauth *e)
{
wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
"dropped: " MACSTR " -> " MACSTR
" (reason code %u)",
MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
}
static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
struct unprot_disassoc *e)
{
wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
"dropped: " MACSTR " -> " MACSTR
" (reason code %u)",
MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
}
static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
u16 reason_code, int locally_generated,
const u8 *ie, size_t ie_len, int deauth)
{
#ifdef CONFIG_AP
if (wpa_s->ap_iface && addr) {
hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
return;
}
if (wpa_s->ap_iface) {
wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
return;
}
#endif /* CONFIG_AP */
if (!locally_generated)
wpa_s->own_disconnect_req = 0;
wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
(wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
eapol_sm_failed(wpa_s->eapol))) &&
!wpa_s->eap_expected_failure))
wpas_auth_failed(wpa_s, "AUTH_FAILED");
#ifdef CONFIG_P2P
if (deauth && reason_code > 0) {
if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
locally_generated) > 0) {
/*
* The interface was removed, so cannot continue
* processing any additional operations after this.
*/
return;
}
}
#endif /* CONFIG_P2P */
wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
locally_generated);
}
static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
struct disassoc_info *info)
{
u16 reason_code = 0;
int locally_generated = 0;
const u8 *addr = NULL;
const u8 *ie = NULL;
size_t ie_len = 0;
wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
if (info) {
addr = info->addr;
ie = info->ie;
ie_len = info->ie_len;
reason_code = info->reason_code;
locally_generated = info->locally_generated;
wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u (%s)%s", reason_code,
reason2str(reason_code),
locally_generated ? " locally_generated=1" : "");
if (addr)
wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
MAC2STR(addr));
wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
ie, ie_len);
}
#ifdef CONFIG_AP
if (wpa_s->ap_iface && info && info->addr) {
hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
return;
}
if (wpa_s->ap_iface) {
wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
return;
}
#endif /* CONFIG_AP */
#ifdef CONFIG_P2P
if (info) {
wpas_p2p_disassoc_notif(
wpa_s, info->addr, reason_code, info->ie, info->ie_len,
locally_generated);
}
#endif /* CONFIG_P2P */
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
sme_event_disassoc(wpa_s, info);
wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
ie, ie_len, 0);
}
static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
struct deauth_info *info)
{
u16 reason_code = 0;
int locally_generated = 0;
const u8 *addr = NULL;
const u8 *ie = NULL;
size_t ie_len = 0;
wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
if (info) {
addr = info->addr;
ie = info->ie;
ie_len = info->ie_len;
reason_code = info->reason_code;
locally_generated = info->locally_generated;
wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u (%s)%s",
reason_code, reason2str(reason_code),
locally_generated ? " locally_generated=1" : "");
if (addr) {
wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
MAC2STR(addr));
}
wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
ie, ie_len);
}
wpa_reset_ft_completed(wpa_s->wpa);
wpas_event_disconnect(wpa_s, addr, reason_code,
locally_generated, ie, ie_len, 1);
}
static const char * reg_init_str(enum reg_change_initiator init)
{
switch (init) {
case REGDOM_SET_BY_CORE:
return "CORE";
case REGDOM_SET_BY_USER:
return "USER";
case REGDOM_SET_BY_DRIVER:
return "DRIVER";
case REGDOM_SET_BY_COUNTRY_IE:
return "COUNTRY_IE";
case REGDOM_BEACON_HINT:
return "BEACON_HINT";
}
return "?";
}
static const char * reg_type_str(enum reg_type type)
{
switch (type) {
case REGDOM_TYPE_UNKNOWN:
return "UNKNOWN";
case REGDOM_TYPE_COUNTRY:
return "COUNTRY";
case REGDOM_TYPE_WORLD:
return "WORLD";
case REGDOM_TYPE_CUSTOM_WORLD:
return "CUSTOM_WORLD";
case REGDOM_TYPE_INTERSECTION:
return "INTERSECTION";
}
return "?";
}
void wpa_supplicant_update_channel_list(struct wpa_supplicant *wpa_s,
struct channel_list_changed *info)
{
struct wpa_supplicant *ifs;
u8 dfs_domain;
/*
* To allow backwards compatibility with higher level layers that
* assumed the REGDOM_CHANGE event is sent over the initially added
* interface. Find the highest parent of this interface and use it to
* send the event.
*/
for (ifs = wpa_s; ifs->parent && ifs != ifs->parent; ifs = ifs->parent)
;
if (info) {
wpa_msg(ifs, MSG_INFO,
WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
reg_init_str(info->initiator), reg_type_str(info->type),
info->alpha2[0] ? " alpha2=" : "",
info->alpha2[0] ? info->alpha2 : "");
}
if (wpa_s->drv_priv == NULL)
return; /* Ignore event during drv initialization */
dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
radio_list) {
wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
ifs->ifname);
free_hw_features(ifs);
ifs->hw.modes = wpa_drv_get_hw_feature_data(
ifs, &ifs->hw.num_modes, &ifs->hw.flags, &dfs_domain);
/* Restart PNO/sched_scan with updated channel list */
if (ifs->pno) {
wpas_stop_pno(ifs);
wpas_start_pno(ifs);
} else if (ifs->sched_scanning && !ifs->pno_sched_pending) {
wpa_dbg(ifs, MSG_DEBUG,
"Channel list changed - restart sched_scan");
wpas_scan_restart_sched_scan(ifs);
}
}
wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_DRIVER);
}
static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
const u8 *frame, size_t len, int freq,
int rssi)
{
const struct ieee80211_mgmt *mgmt;
const u8 *payload;
size_t plen;
u8 category;
if (len < IEEE80211_HDRLEN + 2)
return;
mgmt = (const struct ieee80211_mgmt *) frame;
payload = frame + IEEE80211_HDRLEN;
category = *payload++;
plen = len - IEEE80211_HDRLEN - 1;
wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
" Category=%u DataLen=%d freq=%d MHz",
MAC2STR(mgmt->sa), category, (int) plen, freq);
if (category == WLAN_ACTION_WMM) {
wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
return;
}
#ifdef CONFIG_IEEE80211R
if (category == WLAN_ACTION_FT) {
ft_rx_action(wpa_s, payload, plen);
return;
}
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_SME
if (category == WLAN_ACTION_SA_QUERY) {
sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
return;
}
#endif /* CONFIG_SME */
#ifdef CONFIG_WNM
if (mgmt->u.action.category == WLAN_ACTION_WNM) {
ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
return;
}
#endif /* CONFIG_WNM */
#ifdef CONFIG_GAS
if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
mgmt->u.action.category,
payload, plen, freq) == 0)
return;
#endif /* CONFIG_GAS */
#ifdef CONFIG_GAS_SERVER
if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
gas_server_rx(wpa_s->gas_server, mgmt->da, mgmt->sa, mgmt->bssid,
mgmt->u.action.category,
payload, plen, freq) == 0)
return;
#endif /* CONFIG_GAS_SERVER */
#ifdef CONFIG_TDLS
if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
wpa_dbg(wpa_s, MSG_DEBUG,
"TDLS: Received Discovery Response from " MACSTR,
MAC2STR(mgmt->sa));
return;
}
#endif /* CONFIG_TDLS */
#ifdef CONFIG_INTERWORKING
if (category == WLAN_ACTION_QOS && plen >= 1 &&
payload[0] == QOS_QOS_MAP_CONFIG) {
const u8 *pos = payload + 1;
size_t qlen = plen - 1;
wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
MACSTR, MAC2STR(mgmt->sa));
if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
pos[1] <= qlen - 2 && pos[1] >= 16)
wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
return;
}
#endif /* CONFIG_INTERWORKING */
if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
payload[0] == WLAN_RRM_RADIO_MEASUREMENT_REQUEST) {
wpas_rrm_handle_radio_measurement_request(wpa_s, mgmt->sa,
mgmt->da,
payload + 1,
plen - 1);
return;
}
if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
return;
}
if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
payload + 1, plen - 1,
rssi);
return;
}
#ifdef CONFIG_FST
if (mgmt->u.action.category == WLAN_ACTION_FST && wpa_s->fst) {
fst_rx_action(wpa_s->fst, mgmt, len);
return;
}
#endif /* CONFIG_FST */
#ifdef CONFIG_DPP
if (category == WLAN_ACTION_PUBLIC && plen >= 5 &&
payload[0] == WLAN_PA_VENDOR_SPECIFIC &&
WPA_GET_BE24(&payload[1]) == OUI_WFA &&
payload[4] == DPP_OUI_TYPE) {
payload++;
plen--;
wpas_dpp_rx_action(wpa_s, mgmt->sa, payload, plen, freq);
return;
}
#endif /* CONFIG_DPP */
wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
category, payload, plen, freq);
if (wpa_s->ifmsh)
mesh_mpm_action_rx(wpa_s, mgmt, len);
}
static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
union wpa_event_data *event)
{
struct wpa_freq_range_list *list;
char *str = NULL;
list = &event->freq_range;
if (list->num)
str = freq_range_list_str(list);
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
str ? str : "");
#ifdef CONFIG_P2P
if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
__func__);
} else {
wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
/*
* The update channel flow will also take care of moving a GO
* from the unsafe frequency if needed.
*/
wpas_p2p_update_channel_list(wpa_s,
WPAS_P2P_CHANNEL_UPDATE_AVOID);
}
#endif /* CONFIG_P2P */
os_free(str);
}
static void wpa_supplicant_event_port_authorized(struct wpa_supplicant *wpa_s)
{
if (wpa_s->wpa_state == WPA_ASSOCIATED) {
wpa_supplicant_cancel_auth_timeout(wpa_s);
wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
wpa_s->drv_authorized_port = 1;
}
}
static unsigned int wpas_event_cac_ms(const struct wpa_supplicant *wpa_s,
int freq)
{
size_t i;
int j;
for (i = 0; i < wpa_s->hw.num_modes; i++) {
const struct hostapd_hw_modes *mode = &wpa_s->hw.modes[i];
for (j = 0; j < mode->num_channels; j++) {
const struct hostapd_channel_data *chan;
chan = &mode->channels[j];
if (chan->freq == freq)
return chan->dfs_cac_ms;
}
}
return 0;
}
static void wpas_event_dfs_cac_started(struct wpa_supplicant *wpa_s,
struct dfs_event *radar)
{
#if defined(NEED_AP_MLME) && defined(CONFIG_AP)
if (wpa_s->ap_iface || wpa_s->ifmsh) {
wpas_ap_event_dfs_cac_started(wpa_s, radar);
} else
#endif /* NEED_AP_MLME && CONFIG_AP */
{
unsigned int cac_time = wpas_event_cac_ms(wpa_s, radar->freq);
cac_time /= 1000; /* convert from ms to sec */
if (!cac_time)
cac_time = 10 * 60; /* max timeout: 10 minutes */
/* Restart auth timeout: CAC time added to initial timeout */
wpas_auth_timeout_restart(wpa_s, cac_time);
}
}
static void wpas_event_dfs_cac_finished(struct wpa_supplicant *wpa_s,
struct dfs_event *radar)
{
#if defined(NEED_AP_MLME) && defined(CONFIG_AP)
if (wpa_s->ap_iface || wpa_s->ifmsh) {
wpas_ap_event_dfs_cac_finished(wpa_s, radar);
} else
#endif /* NEED_AP_MLME && CONFIG_AP */
{
/* Restart auth timeout with original value after CAC is
* finished */
wpas_auth_timeout_restart(wpa_s, 0);
}
}
static void wpas_event_dfs_cac_aborted(struct wpa_supplicant *wpa_s,
struct dfs_event *radar)
{
#if defined(NEED_AP_MLME) && defined(CONFIG_AP)
if (wpa_s->ap_iface || wpa_s->ifmsh) {
wpas_ap_event_dfs_cac_aborted(wpa_s, radar);
} else
#endif /* NEED_AP_MLME && CONFIG_AP */
{
/* Restart auth timeout with original value after CAC is
* aborted */
wpas_auth_timeout_restart(wpa_s, 0);
}
}
static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
wpa_dbg(wpa_s, MSG_DEBUG,
"Connection authorized by device, previous state %d",
wpa_s->wpa_state);
wpa_supplicant_event_port_authorized(wpa_s);
wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
data->assoc_info.ptk_kck_len,
data->assoc_info.ptk_kek,
data->assoc_info.ptk_kek_len);
#ifdef CONFIG_FILS
if (wpa_s->auth_alg == WPA_AUTH_ALG_FILS) {
struct wpa_bss *bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
const u8 *fils_cache_id = wpa_bss_get_fils_cache_id(bss);
/* Update ERP next sequence number */
eapol_sm_update_erp_next_seq_num(
wpa_s->eapol, data->assoc_info.fils_erp_next_seq_num);
if (data->assoc_info.fils_pmk && data->assoc_info.fils_pmkid) {
/* Add the new PMK and PMKID to the PMKSA cache */
wpa_sm_pmksa_cache_add(wpa_s->wpa,
data->assoc_info.fils_pmk,
data->assoc_info.fils_pmk_len,
data->assoc_info.fils_pmkid,
wpa_s->bssid, fils_cache_id);
} else if (data->assoc_info.fils_pmkid) {
/* Update the current PMKSA used for this connection */
pmksa_cache_set_current(wpa_s->wpa,
data->assoc_info.fils_pmkid,
NULL, NULL, 0, NULL, 0);
}
}
#endif /* CONFIG_FILS */
}
static void wpas_event_assoc_reject(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
const u8 *bssid = data->assoc_reject.bssid;
#ifdef CONFIG_MBO
struct wpa_bss *reject_bss;
#endif /* CONFIG_MBO */
if (!bssid || is_zero_ether_addr(bssid))
bssid = wpa_s->pending_bssid;
#ifdef CONFIG_MBO
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
reject_bss = wpa_s->current_bss;
else
reject_bss = wpa_bss_get_bssid(wpa_s, bssid);
#endif /* CONFIG_MBO */
if (data->assoc_reject.bssid)
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
"bssid=" MACSTR " status_code=%u%s%s%s",
MAC2STR(data->assoc_reject.bssid),
data->assoc_reject.status_code,
data->assoc_reject.timed_out ? " timeout" : "",
data->assoc_reject.timeout_reason ? "=" : "",
data->assoc_reject.timeout_reason ?
data->assoc_reject.timeout_reason : "");
else
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
"status_code=%u%s%s%s",
data->assoc_reject.status_code,
data->assoc_reject.timed_out ? " timeout" : "",
data->assoc_reject.timeout_reason ? "=" : "",
data->assoc_reject.timeout_reason ?
data->assoc_reject.timeout_reason : "");
wpa_s->assoc_status_code = data->assoc_reject.status_code;
wpas_notify_assoc_status_code(wpa_s);
#ifdef CONFIG_OWE
if (data->assoc_reject.status_code ==
WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
wpa_s->key_mgmt == WPA_KEY_MGMT_OWE &&
wpa_s->current_ssid &&
wpa_s->current_ssid->owe_group == 0 &&
wpa_s->last_owe_group != 21) {
struct wpa_ssid *ssid = wpa_s->current_ssid;
struct wpa_bss *bss = wpa_s->current_bss;
if (!bss) {
bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
if (!bss) {
wpas_connection_failed(wpa_s, bssid);
wpa_supplicant_mark_disassoc(wpa_s);
return;
}
}
wpa_printf(MSG_DEBUG, "OWE: Try next supported DH group");
wpas_connect_work_done(wpa_s);
wpa_supplicant_mark_disassoc(wpa_s);
wpa_supplicant_connect(wpa_s, bss, ssid);
return;
}
#endif /* CONFIG_OWE */
#ifdef CONFIG_MBO
if (data->assoc_reject.status_code ==
WLAN_STATUS_DENIED_POOR_CHANNEL_CONDITIONS &&
reject_bss && data->assoc_reject.resp_ies) {
const u8 *rssi_rej;
rssi_rej = mbo_get_attr_from_ies(
data->assoc_reject.resp_ies,
data->assoc_reject.resp_ies_len,
OCE_ATTR_ID_RSSI_BASED_ASSOC_REJECT);
if (rssi_rej && rssi_rej[1] == 2) {
wpa_printf(MSG_DEBUG,
"OCE: RSSI-based association rejection from "
MACSTR " (Delta RSSI: %u, Retry Delay: %u)",
MAC2STR(reject_bss->bssid),
rssi_rej[2], rssi_rej[3]);
wpa_bss_tmp_disallow(wpa_s,
reject_bss->bssid,
rssi_rej[3],
rssi_rej[2] + reject_bss->level);
}
}
#endif /* CONFIG_MBO */
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
sme_event_assoc_reject(wpa_s, data);
return;
}
/* Driver-based SME cases */
#ifdef CONFIG_SAE
if (wpa_s->current_ssid &&
wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt) &&
!data->assoc_reject.timed_out) {
wpa_dbg(wpa_s, MSG_DEBUG, "SAE: Drop PMKSA cache entry");
wpa_sm_aborted_cached(wpa_s->wpa);
wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
}
#endif /* CONFIG_SAE */
#ifdef CONFIG_DPP
if (wpa_s->current_ssid &&
wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_DPP &&
!data->assoc_reject.timed_out) {
wpa_dbg(wpa_s, MSG_DEBUG, "DPP: Drop PMKSA cache entry");
wpa_sm_aborted_cached(wpa_s->wpa);
wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
}
#endif /* CONFIG_DPP */
#ifdef CONFIG_FILS
/* Update ERP next sequence number */
if (wpa_s->auth_alg == WPA_AUTH_ALG_FILS) {
eapol_sm_update_erp_next_seq_num(
wpa_s->eapol,
data->assoc_reject.fils_erp_next_seq_num);
fils_connection_failure(wpa_s);
}
#endif /* CONFIG_FILS */
wpas_connection_failed(wpa_s, bssid);
wpa_supplicant_mark_disassoc(wpa_s);
}
void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
union wpa_event_data *data)
{
struct wpa_supplicant *wpa_s = ctx;
int resched;
struct os_reltime age, clear_at;
#ifndef CONFIG_NO_STDOUT_DEBUG
int level = MSG_DEBUG;
#endif /* CONFIG_NO_STDOUT_DEBUG */
if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
event != EVENT_INTERFACE_ENABLED &&
event != EVENT_INTERFACE_STATUS &&
event != EVENT_SCAN_RESULTS &&
event != EVENT_SCHED_SCAN_STOPPED) {
wpa_dbg(wpa_s, MSG_DEBUG,
"Ignore event %s (%d) while interface is disabled",
event_to_string(event), event);
return;
}
#ifndef CONFIG_NO_STDOUT_DEBUG
if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
const struct ieee80211_hdr *hdr;
u16 fc;
hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
fc = le_to_host16(hdr->frame_control);
if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
level = MSG_EXCESSIVE;
}
wpa_dbg(wpa_s, level, "Event %s (%d) received",
event_to_string(event), event);
#endif /* CONFIG_NO_STDOUT_DEBUG */
switch (event) {
case EVENT_AUTH:
#ifdef CONFIG_FST
if (!wpas_fst_update_mbie(wpa_s, data->auth.ies,
data->auth.ies_len))
wpa_printf(MSG_DEBUG,
"FST: MB IEs updated from auth IE");
#endif /* CONFIG_FST */
sme_event_auth(wpa_s, data);
wpa_s->auth_status_code = data->auth.status_code;
wpas_notify_auth_status_code(wpa_s);
break;
case EVENT_ASSOC:
#ifdef CONFIG_TESTING_OPTIONS
if (wpa_s->ignore_auth_resp) {
wpa_printf(MSG_INFO,
"EVENT_ASSOC - ignore_auth_resp active!");
break;
}
if (wpa_s->testing_resend_assoc) {
wpa_printf(MSG_INFO,
"EVENT_DEAUTH - testing_resend_assoc");
break;
}
#endif /* CONFIG_TESTING_OPTIONS */
wpa_supplicant_event_assoc(wpa_s, data);
wpa_s->assoc_status_code = WLAN_STATUS_SUCCESS;
if (data &&
(data->assoc_info.authorized ||
(!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
wpa_fils_is_completed(wpa_s->wpa))))
wpa_supplicant_event_assoc_auth(wpa_s, data);
if (data) {
wpa_msg(wpa_s, MSG_INFO,
WPA_EVENT_SUBNET_STATUS_UPDATE "status=%u",
data->assoc_info.subnet_status);
}
break;
case EVENT_DISASSOC:
wpas_event_disassoc(wpa_s,
data ? &data->disassoc_info : NULL);
break;
case EVENT_DEAUTH:
#ifdef CONFIG_TESTING_OPTIONS
if (wpa_s->ignore_auth_resp) {
wpa_printf(MSG_INFO,
"EVENT_DEAUTH - ignore_auth_resp active!");
break;
}
if (wpa_s->testing_resend_assoc) {
wpa_printf(MSG_INFO,
"EVENT_DEAUTH - testing_resend_assoc");
break;
}
#endif /* CONFIG_TESTING_OPTIONS */
wpas_event_deauth(wpa_s,
data ? &data->deauth_info : NULL);
break;
case EVENT_MICHAEL_MIC_FAILURE:
wpa_supplicant_event_michael_mic_failure(wpa_s, data);
break;
#ifndef CONFIG_NO_SCAN_PROCESSING
case EVENT_SCAN_STARTED:
if (wpa_s->own_scan_requested ||
(data && !data->scan_info.external_scan)) {
struct os_reltime diff;
os_get_reltime(&wpa_s->scan_start_time);
os_reltime_sub(&wpa_s->scan_start_time,
&wpa_s->scan_trigger_time, &diff);
wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
diff.sec, diff.usec);
wpa_s->own_scan_requested = 0;
wpa_s->own_scan_running = 1;
if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
wpa_s->manual_scan_use_id) {
wpa_msg_ctrl(wpa_s, MSG_INFO,
WPA_EVENT_SCAN_STARTED "id=%u",
wpa_s->manual_scan_id);
} else {
wpa_msg_ctrl(wpa_s, MSG_INFO,
WPA_EVENT_SCAN_STARTED);
}
} else {
wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
wpa_s->radio->external_scan_running = 1;
wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
}
break;
case EVENT_SCAN_RESULTS:
if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
wpa_s->scan_res_handler = NULL;
wpa_s->own_scan_running = 0;
wpa_s->radio->external_scan_running = 0;
wpa_s->last_scan_req = NORMAL_SCAN_REQ;
break;
}
if (!(data && data->scan_info.external_scan) &&
os_reltime_initialized(&wpa_s->scan_start_time)) {
struct os_reltime now, diff;
os_get_reltime(&now);
os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
wpa_s->scan_start_time.sec = 0;
wpa_s->scan_start_time.usec = 0;
wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
diff.sec, diff.usec);
}
if (wpa_supplicant_event_scan_results(wpa_s, data))
break; /* interface may have been removed */
if (!(data && data->scan_info.external_scan))
wpa_s->own_scan_running = 0;
if (data && data->scan_info.nl_scan_event)
wpa_s->radio->external_scan_running = 0;
radio_work_check_next(wpa_s);
break;
#endif /* CONFIG_NO_SCAN_PROCESSING */
case EVENT_ASSOCINFO:
wpa_supplicant_event_associnfo(wpa_s, data);
break;
case EVENT_INTERFACE_STATUS:
wpa_supplicant_event_interface_status(wpa_s, data);
break;
case EVENT_PMKID_CANDIDATE:
wpa_supplicant_event_pmkid_candidate(wpa_s, data);
break;
#ifdef CONFIG_TDLS
case EVENT_TDLS:
wpa_supplicant_event_tdls(wpa_s, data);
break;
#endif /* CONFIG_TDLS */
#ifdef CONFIG_WNM
case EVENT_WNM:
wpa_supplicant_event_wnm(wpa_s, data);
break;
#endif /* CONFIG_WNM */
#ifdef CONFIG_IEEE80211R
case EVENT_FT_RESPONSE:
wpa_supplicant_event_ft_response(wpa_s, data);
break;
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IBSS_RSN
case EVENT_IBSS_RSN_START:
wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
break;
#endif /* CONFIG_IBSS_RSN */
case EVENT_ASSOC_REJECT:
wpas_event_assoc_reject(wpa_s, data);
break;
case EVENT_AUTH_TIMED_OUT:
/* It is possible to get this event from earlier connection */
if (wpa_s->current_ssid &&
wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
wpa_dbg(wpa_s, MSG_DEBUG,
"Ignore AUTH_TIMED_OUT in mesh configuration");
break;
}
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
sme_event_auth_timed_out(wpa_s, data);
break;
case EVENT_ASSOC_TIMED_OUT:
/* It is possible to get this event from earlier connection */
if (wpa_s->current_ssid &&
wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
wpa_dbg(wpa_s, MSG_DEBUG,
"Ignore ASSOC_TIMED_OUT in mesh configuration");
break;
}
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
sme_event_assoc_timed_out(wpa_s, data);
break;
case EVENT_TX_STATUS:
wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
" type=%d stype=%d",
MAC2STR(data->tx_status.dst),
data->tx_status.type, data->tx_status.stype);
#ifdef CONFIG_AP
if (wpa_s->ap_iface == NULL) {
#ifdef CONFIG_OFFCHANNEL
if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
data->tx_status.stype == WLAN_FC_STYPE_ACTION)
offchannel_send_action_tx_status(
wpa_s, data->tx_status.dst,
data->tx_status.data,
data->tx_status.data_len,
data->tx_status.ack ?
OFFCHANNEL_SEND_ACTION_SUCCESS :
OFFCHANNEL_SEND_ACTION_NO_ACK);
#endif /* CONFIG_OFFCHANNEL */
break;
}
#endif /* CONFIG_AP */
#ifdef CONFIG_OFFCHANNEL
wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
MACSTR, MAC2STR(wpa_s->p2pdev->pending_action_dst));
/*
* Catch TX status events for Action frames we sent via group
* interface in GO mode, or via standalone AP interface.
* Note, wpa_s->p2pdev will be the same as wpa_s->parent,
* except when the primary interface is used as a GO interface
* (for drivers which do not have group interface concurrency)
*/
if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
os_memcmp(wpa_s->p2pdev->pending_action_dst,
data->tx_status.dst, ETH_ALEN) == 0) {
offchannel_send_action_tx_status(
wpa_s->p2pdev, data->tx_status.dst,
data->tx_status.data,
data->tx_status.data_len,
data->tx_status.ack ?
OFFCHANNEL_SEND_ACTION_SUCCESS :
OFFCHANNEL_SEND_ACTION_NO_ACK);
break;
}
#endif /* CONFIG_OFFCHANNEL */
#ifdef CONFIG_AP
switch (data->tx_status.type) {
case WLAN_FC_TYPE_MGMT:
ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
data->tx_status.data_len,
data->tx_status.stype,
data->tx_status.ack);
break;
case WLAN_FC_TYPE_DATA:
ap_tx_status(wpa_s, data->tx_status.dst,
data->tx_status.data,
data->tx_status.data_len,
data->tx_status.ack);
break;
}
#endif /* CONFIG_AP */
break;
#ifdef CONFIG_AP
case EVENT_EAPOL_TX_STATUS:
ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
data->eapol_tx_status.data,
data->eapol_tx_status.data_len,
data->eapol_tx_status.ack);
break;
case EVENT_DRIVER_CLIENT_POLL_OK:
ap_client_poll_ok(wpa_s, data->client_poll.addr);
break;
case EVENT_RX_FROM_UNKNOWN:
if (wpa_s->ap_iface == NULL)
break;
ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
data->rx_from_unknown.wds);
break;
#endif /* CONFIG_AP */
case EVENT_CH_SWITCH_STARTED:
case EVENT_CH_SWITCH:
if (!data || !wpa_s->current_ssid)
break;
wpa_msg(wpa_s, MSG_INFO,
"%sfreq=%d ht_enabled=%d ch_offset=%d ch_width=%s cf1=%d cf2=%d",
event == EVENT_CH_SWITCH ? WPA_EVENT_CHANNEL_SWITCH :
WPA_EVENT_CHANNEL_SWITCH_STARTED,
data->ch_switch.freq,
data->ch_switch.ht_enabled,
data->ch_switch.ch_offset,
channel_width_to_string(data->ch_switch.ch_width),
data->ch_switch.cf1,
data->ch_switch.cf2);
if (event == EVENT_CH_SWITCH_STARTED)
break;
wpa_s->assoc_freq = data->ch_switch.freq;
wpa_s->current_ssid->frequency = data->ch_switch.freq;
#ifdef CONFIG_SME
switch (data->ch_switch.ch_offset) {
case 1:
wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
break;
case -1:
wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
break;
default:
wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
break;
}
#endif /* CONFIG_SME */
#ifdef CONFIG_AP
if (wpa_s->current_ssid->mode == WPAS_MODE_AP ||
wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO ||
wpa_s->current_ssid->mode == WPAS_MODE_MESH ||
wpa_s->current_ssid->mode ==
WPAS_MODE_P2P_GROUP_FORMATION) {
wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
data->ch_switch.ht_enabled,
data->ch_switch.ch_offset,
data->ch_switch.ch_width,
data->ch_switch.cf1,
data->ch_switch.cf2,
1);
}
#endif /* CONFIG_AP */
sme_event_ch_switch(wpa_s);
wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_CS);
wnm_clear_coloc_intf_reporting(wpa_s);
break;
#ifdef CONFIG_AP
#ifdef NEED_AP_MLME
case EVENT_DFS_RADAR_DETECTED:
if (data)
wpas_ap_event_dfs_radar_detected(wpa_s,
&data->dfs_event);
break;
case EVENT_DFS_NOP_FINISHED:
if (data)
wpas_ap_event_dfs_cac_nop_finished(wpa_s,
&data->dfs_event);
break;
#endif /* NEED_AP_MLME */
#endif /* CONFIG_AP */
case EVENT_DFS_CAC_STARTED:
if (data)
wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
break;
case EVENT_DFS_CAC_FINISHED:
if (data)
wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
break;
case EVENT_DFS_CAC_ABORTED:
if (data)
wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
break;
case EVENT_RX_MGMT: {
u16 fc, stype;
const struct ieee80211_mgmt *mgmt;
#ifdef CONFIG_TESTING_OPTIONS
if (wpa_s->ext_mgmt_frame_handling) {
struct rx_mgmt *rx = &data->rx_mgmt;
size_t hex_len = 2 * rx->frame_len + 1;
char *hex = os_malloc(hex_len);
if (hex) {
wpa_snprintf_hex(hex, hex_len,
rx->frame, rx->frame_len);
wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
rx->freq, rx->datarate, rx->ssi_signal,
hex);
os_free(hex);
}
break;
}
#endif /* CONFIG_TESTING_OPTIONS */
mgmt = (const struct ieee80211_mgmt *)
data->rx_mgmt.frame;
fc = le_to_host16(mgmt->frame_control);
stype = WLAN_FC_GET_STYPE(fc);
#ifdef CONFIG_AP
if (wpa_s->ap_iface == NULL) {
#endif /* CONFIG_AP */
#ifdef CONFIG_P2P
if (stype == WLAN_FC_STYPE_PROBE_REQ &&
data->rx_mgmt.frame_len > IEEE80211_HDRLEN) {
const u8 *src = mgmt->sa;
const u8 *ie;
size_t ie_len;
ie = data->rx_mgmt.frame + IEEE80211_HDRLEN;
ie_len = data->rx_mgmt.frame_len -
IEEE80211_HDRLEN;
wpas_p2p_probe_req_rx(
wpa_s, src, mgmt->da,
mgmt->bssid, ie, ie_len,
data->rx_mgmt.freq,
data->rx_mgmt.ssi_signal);
break;
}
#endif /* CONFIG_P2P */
#ifdef CONFIG_IBSS_RSN
if (wpa_s->current_ssid &&
wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
stype == WLAN_FC_STYPE_AUTH &&
data->rx_mgmt.frame_len >= 30) {
wpa_supplicant_event_ibss_auth(wpa_s, data);
break;
}
#endif /* CONFIG_IBSS_RSN */
if (stype == WLAN_FC_STYPE_ACTION) {
wpas_event_rx_mgmt_action(
wpa_s, data->rx_mgmt.frame,
data->rx_mgmt.frame_len,
data->rx_mgmt.freq,
data->rx_mgmt.ssi_signal);
break;
}
if (wpa_s->ifmsh) {
mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
break;
}
#ifdef CONFIG_SAE
if (stype == WLAN_FC_STYPE_AUTH &&
!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SAE)) {
sme_external_auth_mgmt_rx(
wpa_s, data->rx_mgmt.frame,
data->rx_mgmt.frame_len);
break;
}
#endif /* CONFIG_SAE */
wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
"management frame in non-AP mode");
break;
#ifdef CONFIG_AP
}
if (stype == WLAN_FC_STYPE_PROBE_REQ &&
data->rx_mgmt.frame_len > IEEE80211_HDRLEN) {
const u8 *ie;
size_t ie_len;
ie = data->rx_mgmt.frame + IEEE80211_HDRLEN;
ie_len = data->rx_mgmt.frame_len - IEEE80211_HDRLEN;
wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
mgmt->bssid, ie, ie_len,
data->rx_mgmt.ssi_signal);
}
ap_mgmt_rx(wpa_s, &data->rx_mgmt);
#endif /* CONFIG_AP */
break;
}
case EVENT_RX_PROBE_REQ:
if (data->rx_probe_req.sa == NULL ||
data->rx_probe_req.ie == NULL)
break;
#ifdef CONFIG_AP
if (wpa_s->ap_iface) {
hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
data->rx_probe_req.sa,
data->rx_probe_req.da,
data->rx_probe_req.bssid,
data->rx_probe_req.ie,
data->rx_probe_req.ie_len,
data->rx_probe_req.ssi_signal);
break;
}
#endif /* CONFIG_AP */
wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
data->rx_probe_req.da,
data->rx_probe_req.bssid,
data->rx_probe_req.ie,
data->rx_probe_req.ie_len,
0,
data->rx_probe_req.ssi_signal);
break;
case EVENT_REMAIN_ON_CHANNEL:
#ifdef CONFIG_OFFCHANNEL
offchannel_remain_on_channel_cb(
wpa_s, data->remain_on_channel.freq,
data->remain_on_channel.duration);
#endif /* CONFIG_OFFCHANNEL */
wpas_p2p_remain_on_channel_cb(
wpa_s, data->remain_on_channel.freq,
data->remain_on_channel.duration);
break;
case EVENT_CANCEL_REMAIN_ON_CHANNEL:
#ifdef CONFIG_OFFCHANNEL
offchannel_cancel_remain_on_channel_cb(
wpa_s, data->remain_on_channel.freq);
#endif /* CONFIG_OFFCHANNEL */
wpas_p2p_cancel_remain_on_channel_cb(
wpa_s, data->remain_on_channel.freq);
#ifdef CONFIG_DPP
wpas_dpp_cancel_remain_on_channel_cb(
wpa_s, data->remain_on_channel.freq);
#endif /* CONFIG_DPP */
break;
case EVENT_EAPOL_RX:
wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
data->eapol_rx.data,
data->eapol_rx.data_len);
break;
case EVENT_SIGNAL_CHANGE:
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
"above=%d signal=%d noise=%d txrate=%d",
data->signal_change.above_threshold,
data->signal_change.current_signal,
data->signal_change.current_noise,
data->signal_change.current_txrate);
wpa_bss_update_level(wpa_s->current_bss,
data->signal_change.current_signal);
bgscan_notify_signal_change(
wpa_s, data->signal_change.above_threshold,
data->signal_change.current_signal,
data->signal_change.current_noise,
data->signal_change.current_txrate);
break;
case EVENT_INTERFACE_MAC_CHANGED:
wpa_supplicant_update_mac_addr(wpa_s);
break;
case EVENT_INTERFACE_ENABLED:
wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
eloop_cancel_timeout(wpas_clear_disabled_interface,
wpa_s, NULL);
wpa_supplicant_update_mac_addr(wpa_s);
wpa_supplicant_set_default_scan_ies(wpa_s);
if (wpa_s->p2p_mgmt) {
wpa_supplicant_set_state(wpa_s,
WPA_DISCONNECTED);
break;
}
#ifdef CONFIG_AP
if (!wpa_s->ap_iface) {
wpa_supplicant_set_state(wpa_s,
WPA_DISCONNECTED);
wpa_s->scan_req = NORMAL_SCAN_REQ;
wpa_supplicant_req_scan(wpa_s, 0, 0);
} else
wpa_supplicant_set_state(wpa_s,
WPA_COMPLETED);
#else /* CONFIG_AP */
wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
wpa_supplicant_req_scan(wpa_s, 0, 0);
#endif /* CONFIG_AP */
}
break;
case EVENT_INTERFACE_DISABLED:
wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
#ifdef CONFIG_P2P
if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
(wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
/*
* Mark interface disabled if this happens to end up not
* being removed as a separate P2P group interface.
*/
wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
/*
* The interface was externally disabled. Remove
* it assuming an external entity will start a
* new session if needed.
*/
if (wpa_s->current_ssid &&
wpa_s->current_ssid->p2p_group)
wpas_p2p_interface_unavailable(wpa_s);
else
wpas_p2p_disconnect(wpa_s);
/*
* wpa_s instance may have been freed, so must not use
* it here anymore.
*/
break;
}
if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
p2p_in_progress(wpa_s->global->p2p) > 1) {
/* This radio work will be cancelled, so clear P2P
* state as well.
*/
p2p_stop_find(wpa_s->global->p2p);
}
#endif /* CONFIG_P2P */
if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
/*
* Indicate disconnection to keep ctrl_iface events
* consistent.
*/
wpa_supplicant_event_disassoc(
wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
}
wpa_supplicant_mark_disassoc(wpa_s);
os_reltime_age(&wpa_s->last_scan, &age);
if (age.sec >= SCAN_RES_VALID_FOR_CONNECT) {
clear_at.sec = SCAN_RES_VALID_FOR_CONNECT;
clear_at.usec = 0;
} else {
struct os_reltime tmp;
tmp.sec = SCAN_RES_VALID_FOR_CONNECT;
tmp.usec = 0;
os_reltime_sub(&tmp, &age, &clear_at);
}
eloop_register_timeout(clear_at.sec, clear_at.usec,
wpas_clear_disabled_interface,
wpa_s, NULL);
radio_remove_works(wpa_s, NULL, 0);
wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
break;
case EVENT_CHANNEL_LIST_CHANGED:
wpa_supplicant_update_channel_list(
wpa_s, &data->channel_list_changed);
break;
case EVENT_INTERFACE_UNAVAILABLE:
wpas_p2p_interface_unavailable(wpa_s);
break;
case EVENT_BEST_CHANNEL:
wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
"(%d %d %d)",
data->best_chan.freq_24, data->best_chan.freq_5,
data->best_chan.freq_overall);
wpa_s->best_24_freq = data->best_chan.freq_24;
wpa_s->best_5_freq = data->best_chan.freq_5;
wpa_s->best_overall_freq = data->best_chan.freq_overall;
wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
data->best_chan.freq_5,
data->best_chan.freq_overall);
break;
case EVENT_UNPROT_DEAUTH:
wpa_supplicant_event_unprot_deauth(wpa_s,
&data->unprot_deauth);
break;
case EVENT_UNPROT_DISASSOC:
wpa_supplicant_event_unprot_disassoc(wpa_s,
&data->unprot_disassoc);
break;
case EVENT_STATION_LOW_ACK:
#ifdef CONFIG_AP
if (wpa_s->ap_iface && data)
hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
data->low_ack.addr);
#endif /* CONFIG_AP */
#ifdef CONFIG_TDLS
if (data)
wpa_tdls_disable_unreachable_link(wpa_s->wpa,
data->low_ack.addr);
#endif /* CONFIG_TDLS */
break;
case EVENT_IBSS_PEER_LOST:
#ifdef CONFIG_IBSS_RSN
ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
#endif /* CONFIG_IBSS_RSN */
break;
case EVENT_DRIVER_GTK_REKEY:
if (os_memcmp(data->driver_gtk_rekey.bssid,
wpa_s->bssid, ETH_ALEN))
break;
if (!wpa_s->wpa)
break;
wpa_sm_update_replay_ctr(wpa_s->wpa,
data->driver_gtk_rekey.replay_ctr);
break;
case EVENT_SCHED_SCAN_STOPPED:
wpa_s->sched_scanning = 0;
resched = wpa_s->scanning && wpas_scan_scheduled(wpa_s);
wpa_supplicant_notify_scanning(wpa_s, 0);
if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
break;
/*
* If the driver stopped scanning without being requested to,
* request a new scan to continue scanning for networks.
*/
if (!wpa_s->sched_scan_stop_req &&
wpa_s->wpa_state == WPA_SCANNING) {
wpa_dbg(wpa_s, MSG_DEBUG,
"Restart scanning after unexpected sched_scan stop event");
wpa_supplicant_req_scan(wpa_s, 1, 0);
break;
}
wpa_s->sched_scan_stop_req = 0;
/*
* Start a new sched scan to continue searching for more SSIDs
* either if timed out or PNO schedule scan is pending.
*/
if (wpa_s->sched_scan_timed_out) {
wpa_supplicant_req_sched_scan(wpa_s);
} else if (wpa_s->pno_sched_pending) {
wpa_s->pno_sched_pending = 0;
wpas_start_pno(wpa_s);
} else if (resched) {
wpa_supplicant_req_scan(wpa_s, 0, 0);
}
break;
case EVENT_WPS_BUTTON_PUSHED:
#ifdef CONFIG_WPS
wpas_wps_start_pbc(wpa_s, NULL, 0, 0);
#endif /* CONFIG_WPS */
break;
case EVENT_AVOID_FREQUENCIES:
wpa_supplicant_notify_avoid_freq(wpa_s, data);
break;
case EVENT_CONNECT_FAILED_REASON:
#ifdef CONFIG_AP
if (!wpa_s->ap_iface || !data)
break;
hostapd_event_connect_failed_reason(
wpa_s->ap_iface->bss[0],
data->connect_failed_reason.addr,
data->connect_failed_reason.code);
#endif /* CONFIG_AP */
break;
case EVENT_NEW_PEER_CANDIDATE:
#ifdef CONFIG_MESH
if (!wpa_s->ifmsh || !data)
break;
wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
data->mesh_peer.ies,
data->mesh_peer.ie_len);
#endif /* CONFIG_MESH */
break;
case EVENT_SURVEY:
#ifdef CONFIG_AP
if (!wpa_s->ap_iface)
break;
hostapd_event_get_survey(wpa_s->ap_iface,
&data->survey_results);
#endif /* CONFIG_AP */
break;
case EVENT_ACS_CHANNEL_SELECTED:
#ifdef CONFIG_AP
#ifdef CONFIG_ACS
if (!wpa_s->ap_iface)
break;
hostapd_acs_channel_selected(wpa_s->ap_iface->bss[0],
&data->acs_selected_channels);
#endif /* CONFIG_ACS */
#endif /* CONFIG_AP */
break;
case EVENT_P2P_LO_STOP:
#ifdef CONFIG_P2P
wpa_s->p2p_lo_started = 0;
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_LISTEN_OFFLOAD_STOP
P2P_LISTEN_OFFLOAD_STOP_REASON "reason=%d",
data->p2p_lo_stop.reason_code);
#endif /* CONFIG_P2P */
break;
case EVENT_BEACON_LOSS:
if (!wpa_s->current_bss || !wpa_s->current_ssid)
break;
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_BEACON_LOSS);
bgscan_notify_beacon_loss(wpa_s);
break;
case EVENT_EXTERNAL_AUTH:
#ifdef CONFIG_SAE
if (!wpa_s->current_ssid) {
wpa_printf(MSG_DEBUG, "SAE: current_ssid is NULL");
break;
}
sme_external_auth_trigger(wpa_s, data);
#endif /* CONFIG_SAE */
break;
case EVENT_PORT_AUTHORIZED:
wpa_supplicant_event_port_authorized(wpa_s);
break;
case EVENT_STATION_OPMODE_CHANGED:
#ifdef CONFIG_AP
if (!wpa_s->ap_iface || !data)
break;
hostapd_event_sta_opmode_changed(wpa_s->ap_iface->bss[0],
data->sta_opmode.addr,
data->sta_opmode.smps_mode,
data->sta_opmode.chan_width,
data->sta_opmode.rx_nss);
#endif /* CONFIG_AP */
break;
default:
wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
break;
}
}
void wpa_supplicant_event_global(void *ctx, enum wpa_event_type event,
union wpa_event_data *data)
{
struct wpa_supplicant *wpa_s;
if (event != EVENT_INTERFACE_STATUS)
return;
wpa_s = wpa_supplicant_get_iface(ctx, data->interface_status.ifname);
if (wpa_s && wpa_s->driver->get_ifindex) {
unsigned int ifindex;
ifindex = wpa_s->driver->get_ifindex(wpa_s->drv_priv);
if (ifindex != data->interface_status.ifindex) {
wpa_dbg(wpa_s, MSG_DEBUG,
"interface status ifindex %d mismatch (%d)",
ifindex, data->interface_status.ifindex);
return;
}
}
#ifdef CONFIG_MATCH_IFACE
else if (data->interface_status.ievent == EVENT_INTERFACE_ADDED) {
struct wpa_interface *wpa_i;
wpa_i = wpa_supplicant_match_iface(
ctx, data->interface_status.ifname);
if (!wpa_i)
return;
wpa_s = wpa_supplicant_add_iface(ctx, wpa_i, NULL);
os_free(wpa_i);
if (wpa_s)
wpa_s->matched = 1;
}
#endif /* CONFIG_MATCH_IFACE */
if (wpa_s)
wpa_supplicant_event(wpa_s, event, data);
}
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