/*
* wpa_supplicant - SME
- * Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2009-2014, Jouni Malinen <j@w1.fi>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include "includes.h"
#include "common.h"
+#include "utils/eloop.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "eapol_supp/eapol_supp_sm.h"
#include "common/wpa_common.h"
+#include "common/sae.h"
#include "rsn_supp/wpa.h"
#include "rsn_supp/pmksa_cache.h"
#include "config.h"
#include "wps_supplicant.h"
#include "p2p_supplicant.h"
#include "notify.h"
-#include "blacklist.h"
#include "bss.h"
#include "scan.h"
#include "sme.h"
+#include "hs20_supplicant.h"
-void sme_authenticate(struct wpa_supplicant *wpa_s,
- struct wpa_bss *bss, struct wpa_ssid *ssid)
+#define SME_AUTH_TIMEOUT 5
+#define SME_ASSOC_TIMEOUT 5
+
+static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
+static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
+static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
+#ifdef CONFIG_IEEE80211W
+static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
+#endif /* CONFIG_IEEE80211W */
+
+
+#ifdef CONFIG_SAE
+
+static int index_within_array(const int *array, int idx)
+{
+ int i;
+ for (i = 0; i < idx; i++) {
+ if (array[i] <= 0)
+ return 0;
+ }
+ return 1;
+}
+
+
+static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
+{
+ int *groups = wpa_s->conf->sae_groups;
+ int default_groups[] = { 19, 20, 21, 25, 26, 0 };
+
+ if (!groups || groups[0] <= 0)
+ groups = default_groups;
+
+ /* Configuration may have changed, so validate current index */
+ if (!index_within_array(groups, wpa_s->sme.sae_group_index))
+ return -1;
+
+ for (;;) {
+ int group = groups[wpa_s->sme.sae_group_index];
+ if (group <= 0)
+ break;
+ if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
+ wpa_s->sme.sae.group);
+ return 0;
+ }
+ wpa_s->sme.sae_group_index++;
+ }
+
+ return -1;
+}
+
+
+static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
+ struct wpa_ssid *ssid,
+ const u8 *bssid)
+{
+ struct wpabuf *buf;
+ size_t len;
+
+ if (ssid->passphrase == NULL) {
+ wpa_printf(MSG_DEBUG, "SAE: No password available");
+ return NULL;
+ }
+
+ if (sme_set_sae_group(wpa_s) < 0) {
+ wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
+ return NULL;
+ }
+
+ if (sae_prepare_commit(wpa_s->own_addr, bssid,
+ (u8 *) ssid->passphrase,
+ os_strlen(ssid->passphrase),
+ &wpa_s->sme.sae) < 0) {
+ wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
+ return NULL;
+ }
+
+ len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
+ buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
+ if (buf == NULL)
+ return NULL;
+
+ wpabuf_put_le16(buf, 1); /* Transaction seq# */
+ wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
+ sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token);
+
+ return buf;
+}
+
+
+static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
+{
+ struct wpabuf *buf;
+
+ buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
+ if (buf == NULL)
+ return NULL;
+
+ wpabuf_put_le16(buf, 2); /* Transaction seq# */
+ wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
+ sae_write_confirm(&wpa_s->sme.sae, buf);
+
+ return buf;
+}
+
+#endif /* CONFIG_SAE */
+
+
+/**
+ * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
+ * @wpa_s: Pointer to wpa_supplicant data
+ * @bss: Pointer to the bss which is the target of authentication attempt
+ */
+static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
+ struct wpa_bss *bss)
+{
+ const u8 rrm_ie_len = 5;
+ u8 *pos;
+ const u8 *rrm_ie;
+
+ wpa_s->rrm.rrm_used = 0;
+
+ wpa_printf(MSG_DEBUG,
+ "RRM: Determining whether RRM can be used - device support: 0x%x",
+ wpa_s->drv_rrm_flags);
+
+ rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
+ if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
+ wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
+ return;
+ }
+
+ if (!(wpa_s->drv_rrm_flags &
+ WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
+ !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) {
+ wpa_printf(MSG_DEBUG,
+ "RRM: Insufficient RRM support in driver - do not use RRM");
+ return;
+ }
+
+ if (sizeof(wpa_s->sme.assoc_req_ie) <
+ wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
+ wpa_printf(MSG_INFO,
+ "RRM: Unable to use RRM, no room for RRM IE");
+ return;
+ }
+
+ wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
+ pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
+ os_memset(pos, 0, 2 + rrm_ie_len);
+ *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
+ *pos++ = rrm_ie_len;
+
+ /* Set supported capabilites flags */
+ if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
+ *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
+
+ wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
+ wpa_s->rrm.rrm_used = 1;
+}
+
+
+static void sme_send_authentication(struct wpa_supplicant *wpa_s,
+ struct wpa_bss *bss, struct wpa_ssid *ssid,
+ int start)
{
struct wpa_driver_auth_params params;
struct wpa_ssid *old_ssid;
const u8 *md = NULL;
#endif /* CONFIG_IEEE80211R */
int i, bssid_changed;
+ struct wpabuf *resp = NULL;
+ u8 ext_capab[18];
+ int ext_capab_len;
+ int skip_auth;
if (bss == NULL) {
- wpa_printf(MSG_ERROR, "SME: No scan result available for the "
- "network");
+ wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
+ "the network");
+ wpas_connect_work_done(wpa_s);
return;
}
+ skip_auth = wpa_s->conf->reassoc_same_bss_optim &&
+ wpa_s->reassoc_same_bss;
wpa_s->current_bss = bss;
os_memset(¶ms, 0, sizeof(params));
params.bssid = bss->bssid;
params.ssid = bss->ssid;
params.ssid_len = bss->ssid_len;
+ params.p2p = ssid->p2p_group;
if (wpa_s->sme.ssid_len != params.ssid_len ||
os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
}
}
#endif /* IEEE8021X_EAPOL */
- wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
- params.auth_alg);
+ wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
+ params.auth_alg);
if (ssid->auth_alg) {
params.auth_alg = ssid->auth_alg;
- wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
- params.auth_alg);
+ wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
+ "0x%x", params.auth_alg);
+ }
+#ifdef CONFIG_SAE
+ wpa_s->sme.sae_pmksa_caching = 0;
+ if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
+ const u8 *rsn;
+ struct wpa_ie_data ied;
+
+ rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
+ if (!rsn) {
+ wpa_dbg(wpa_s, MSG_DEBUG,
+ "SAE enabled, but target BSS does not advertise RSN");
+ } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
+ wpa_key_mgmt_sae(ied.key_mgmt)) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
+ params.auth_alg = WPA_AUTH_ALG_SAE;
+ } else {
+ wpa_dbg(wpa_s, MSG_DEBUG,
+ "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
+ }
}
+#endif /* CONFIG_SAE */
for (i = 0; i < NUM_WEP_KEYS; i++) {
if (ssid->wep_key_len[i])
if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
- (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
- WPA_KEY_MGMT_FT_IEEE8021X |
- WPA_KEY_MGMT_FT_PSK |
- WPA_KEY_MGMT_IEEE8021X_SHA256 |
- WPA_KEY_MGMT_PSK_SHA256))) {
+ wpa_key_mgmt_wpa(ssid->key_mgmt)) {
int try_opportunistic;
- try_opportunistic = ssid->proactive_key_caching &&
+ try_opportunistic = (ssid->proactive_key_caching < 0 ?
+ wpa_s->conf->okc :
+ ssid->proactive_key_caching) &&
(ssid->proto & WPA_PROTO_RSN);
if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
wpa_s->current_ssid,
try_opportunistic) == 0)
- eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
+ eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
wpa_s->sme.assoc_req_ie,
&wpa_s->sme.assoc_req_ie_len)) {
- wpa_printf(MSG_WARNING, "SME: Failed to set WPA key "
- "management and encryption suites");
+ wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
+ "key management and encryption suites");
+ wpas_connect_work_done(wpa_s);
return;
}
- } else if (ssid->key_mgmt &
- (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
- WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
- WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
- WPA_KEY_MGMT_IEEE8021X_SHA256)) {
+ } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
+ wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
+ /*
+ * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
+ * use non-WPA since the scan results did not indicate that the
+ * AP is using WPA or WPA2.
+ */
+ wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
+ wpa_s->sme.assoc_req_ie_len = 0;
+ } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
wpa_s->sme.assoc_req_ie,
&wpa_s->sme.assoc_req_ie_len)) {
- wpa_printf(MSG_WARNING, "SME: Failed to set WPA key "
- "management and encryption suites (no scan "
- "results)");
+ wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
+ "key management and encryption suites (no "
+ "scan results)");
+ wpas_connect_work_done(wpa_s);
return;
}
#ifdef CONFIG_WPS
wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
}
- if (md && ssid->key_mgmt & (WPA_KEY_MGMT_FT_PSK |
- WPA_KEY_MGMT_FT_IEEE8021X)) {
+ if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
if (wpa_s->sme.assoc_req_ie_len + 5 <
sizeof(wpa_s->sme.assoc_req_ie)) {
struct rsn_mdie *mdie;
if (wpa_s->sme.ft_used &&
os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
wpa_sm_has_ptk(wpa_s->wpa)) {
- wpa_printf(MSG_DEBUG, "SME: Trying to use FT "
- "over-the-air");
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
+ "over-the-air");
params.auth_alg = WPA_AUTH_ALG_FT;
params.ie = wpa_s->sme.ft_ies;
params.ie_len = wpa_s->sme.ft_ies_len;
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211W
- wpa_s->sme.mfp = ssid->ieee80211w;
- if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
+ wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
+ if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
struct wpa_ie_data _ie;
if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
_ie.capabilities &
(WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
- wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
- "require MFP");
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
+ "MFP: require MFP");
wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
}
}
u8 *pos;
size_t len;
int res;
- int p2p_group;
- p2p_group = wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE;
pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
len = sizeof(wpa_s->sme.assoc_req_ie) -
wpa_s->sme.assoc_req_ie_len;
- res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, p2p_group);
+ res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
+ ssid->p2p_group);
if (res >= 0)
wpa_s->sme.assoc_req_ie_len += res;
}
#endif /* CONFIG_P2P */
+#ifdef CONFIG_HS20
+ if (is_hs20_network(wpa_s, ssid, bss)) {
+ struct wpabuf *hs20;
+ hs20 = wpabuf_alloc(20);
+ if (hs20) {
+ int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
+ size_t len;
+
+ wpas_hs20_add_indication(hs20, pps_mo_id);
+ len = sizeof(wpa_s->sme.assoc_req_ie) -
+ wpa_s->sme.assoc_req_ie_len;
+ if (wpabuf_len(hs20) <= len) {
+ os_memcpy(wpa_s->sme.assoc_req_ie +
+ wpa_s->sme.assoc_req_ie_len,
+ wpabuf_head(hs20), wpabuf_len(hs20));
+ wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
+ }
+ wpabuf_free(hs20);
+ }
+ }
+#endif /* CONFIG_HS20 */
+
+#ifdef CONFIG_FST
+ if (wpa_s->fst_ies) {
+ int fst_ies_len = wpabuf_len(wpa_s->fst_ies);
+
+ if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <=
+ sizeof(wpa_s->sme.assoc_req_ie)) {
+ os_memcpy(wpa_s->sme.assoc_req_ie +
+ wpa_s->sme.assoc_req_ie_len,
+ wpabuf_head(wpa_s->fst_ies),
+ fst_ies_len);
+ wpa_s->sme.assoc_req_ie_len += fst_ies_len;
+ }
+ }
+#endif /* CONFIG_FST */
+
+ ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
+ sizeof(ext_capab));
+ if (ext_capab_len > 0) {
+ u8 *pos = wpa_s->sme.assoc_req_ie;
+ if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
+ pos += 2 + pos[1];
+ os_memmove(pos + ext_capab_len, pos,
+ wpa_s->sme.assoc_req_ie_len -
+ (pos - wpa_s->sme.assoc_req_ie));
+ wpa_s->sme.assoc_req_ie_len += ext_capab_len;
+ os_memcpy(pos, ext_capab, ext_capab_len);
+ }
+
+ if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
+ struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
+ size_t len;
+
+ len = sizeof(wpa_s->sme.assoc_req_ie) -
+ wpa_s->sme.assoc_req_ie_len;
+ if (wpabuf_len(buf) <= len) {
+ os_memcpy(wpa_s->sme.assoc_req_ie +
+ wpa_s->sme.assoc_req_ie_len,
+ wpabuf_head(buf), wpabuf_len(buf));
+ wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
+ }
+ }
+
+ sme_auth_handle_rrm(wpa_s, bss);
+
+#ifdef CONFIG_SAE
+ if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
+ pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0)
+ {
+ wpa_dbg(wpa_s, MSG_DEBUG,
+ "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
+ params.auth_alg = WPA_AUTH_ALG_OPEN;
+ wpa_s->sme.sae_pmksa_caching = 1;
+ }
+
+ if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
+ if (start)
+ resp = sme_auth_build_sae_commit(wpa_s, ssid,
+ bss->bssid);
+ else
+ resp = sme_auth_build_sae_confirm(wpa_s);
+ if (resp == NULL) {
+ wpas_connection_failed(wpa_s, bss->bssid);
+ return;
+ }
+ params.sae_data = wpabuf_head(resp);
+ params.sae_data_len = wpabuf_len(resp);
+ wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
+ }
+#endif /* CONFIG_SAE */
+
+ wpa_supplicant_cancel_sched_scan(wpa_s);
wpa_supplicant_cancel_scan(wpa_s);
- wpa_msg(wpa_s, MSG_INFO, "Trying to authenticate with " MACSTR
+ wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
" (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
if (old_ssid != wpa_s->current_ssid)
wpas_notify_network_changed(wpa_s);
+#ifdef CONFIG_P2P
+ /*
+ * If multi-channel concurrency is not supported, check for any
+ * frequency conflict. In case of any frequency conflict, remove the
+ * least prioritized connection.
+ */
+ if (wpa_s->num_multichan_concurrent < 2) {
+ int freq, num;
+ num = get_shared_radio_freqs(wpa_s, &freq, 1);
+ if (num > 0 && freq > 0 && freq != params.freq) {
+ wpa_printf(MSG_DEBUG,
+ "Conflicting frequency found (%d != %d)",
+ freq, params.freq);
+ if (wpas_p2p_handle_frequency_conflicts(wpa_s,
+ params.freq,
+ ssid) < 0) {
+ wpas_connection_failed(wpa_s, bss->bssid);
+ wpa_supplicant_mark_disassoc(wpa_s);
+ wpabuf_free(resp);
+ wpas_connect_work_done(wpa_s);
+ return;
+ }
+ }
+ }
+#endif /* CONFIG_P2P */
+
+ if (skip_auth) {
+ wpa_msg(wpa_s, MSG_DEBUG,
+ "SME: Skip authentication step on reassoc-to-same-BSS");
+ wpabuf_free(resp);
+ sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
+ return;
+ }
+
+
wpa_s->sme.auth_alg = params.auth_alg;
if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) {
- wpa_msg(wpa_s, MSG_INFO, "Authentication request to the "
+ wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
"driver failed");
- wpa_supplicant_req_scan(wpa_s, 1, 0);
+ wpas_connection_failed(wpa_s, bss->bssid);
+ wpa_supplicant_mark_disassoc(wpa_s);
+ wpabuf_free(resp);
+ wpas_connect_work_done(wpa_s);
return;
}
- /* TODO: add timeout on authentication */
+ eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
+ NULL);
/*
* Association will be started based on the authentication event from
* the driver.
*/
+
+ wpabuf_free(resp);
}
+static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
+{
+ struct wpa_connect_work *cwork = work->ctx;
+ struct wpa_supplicant *wpa_s = work->wpa_s;
+
+ if (deinit) {
+ if (work->started)
+ wpa_s->connect_work = NULL;
+
+ wpas_connect_work_free(cwork);
+ return;
+ }
+
+ wpa_s->connect_work = work;
+
+ if (cwork->bss_removed ||
+ !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) ||
+ wpas_network_disabled(wpa_s, cwork->ssid)) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
+ wpas_connect_work_done(wpa_s);
+ return;
+ }
+
+ sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
+}
+
+
+void sme_authenticate(struct wpa_supplicant *wpa_s,
+ struct wpa_bss *bss, struct wpa_ssid *ssid)
+{
+ struct wpa_connect_work *cwork;
+
+ if (bss == NULL || ssid == NULL)
+ return;
+ if (wpa_s->connect_work) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
+ return;
+ }
+
+ if (radio_work_pending(wpa_s, "sme-connect")) {
+ /*
+ * The previous sme-connect work might no longer be valid due to
+ * the fact that the BSS list was updated. In addition, it makes
+ * sense to adhere to the 'newer' decision.
+ */
+ wpa_dbg(wpa_s, MSG_DEBUG,
+ "SME: Remove previous pending sme-connect");
+ radio_remove_works(wpa_s, "sme-connect", 0);
+ }
+
+ cwork = os_zalloc(sizeof(*cwork));
+ if (cwork == NULL)
+ return;
+ cwork->bss = bss;
+ cwork->ssid = ssid;
+ cwork->sme = 1;
+
+#ifdef CONFIG_SAE
+ wpa_s->sme.sae.state = SAE_NOTHING;
+ wpa_s->sme.sae.send_confirm = 0;
+ wpa_s->sme.sae_group_index = 0;
+#endif /* CONFIG_SAE */
+
+ if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
+ sme_auth_start_cb, cwork) < 0)
+ wpas_connect_work_free(cwork);
+}
+
+
+#ifdef CONFIG_SAE
+
+static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
+ u16 status_code, const u8 *data, size_t len)
+{
+ int *groups;
+
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
+ "status code %u", auth_transaction, status_code);
+
+ if (auth_transaction == 1 &&
+ status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
+ wpa_s->sme.sae.state == SAE_COMMITTED &&
+ wpa_s->current_bss && wpa_s->current_ssid) {
+ int default_groups[] = { 19, 20, 21, 25, 26, 0 };
+ u16 group;
+
+ groups = wpa_s->conf->sae_groups;
+ if (!groups || groups[0] <= 0)
+ groups = default_groups;
+
+ if (len < sizeof(le16)) {
+ wpa_dbg(wpa_s, MSG_DEBUG,
+ "SME: Too short SAE anti-clogging token request");
+ return -1;
+ }
+ group = WPA_GET_LE16(data);
+ wpa_dbg(wpa_s, MSG_DEBUG,
+ "SME: SAE anti-clogging token requested (group %u)",
+ group);
+ if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
+ WLAN_STATUS_SUCCESS) {
+ wpa_dbg(wpa_s, MSG_ERROR,
+ "SME: SAE group %u of anti-clogging request is invalid",
+ group);
+ return -1;
+ }
+ wpabuf_free(wpa_s->sme.sae_token);
+ wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
+ len - sizeof(le16));
+ sme_send_authentication(wpa_s, wpa_s->current_bss,
+ wpa_s->current_ssid, 1);
+ return 0;
+ }
+
+ if (auth_transaction == 1 &&
+ status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
+ wpa_s->sme.sae.state == SAE_COMMITTED &&
+ wpa_s->current_bss && wpa_s->current_ssid) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
+ wpa_s->sme.sae_group_index++;
+ if (sme_set_sae_group(wpa_s) < 0)
+ return -1; /* no other groups enabled */
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
+ sme_send_authentication(wpa_s, wpa_s->current_bss,
+ wpa_s->current_ssid, 1);
+ return 0;
+ }
+
+ if (status_code != WLAN_STATUS_SUCCESS)
+ return -1;
+
+ if (auth_transaction == 1) {
+ u16 res;
+
+ groups = wpa_s->conf->sae_groups;
+
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
+ if (wpa_s->current_bss == NULL ||
+ wpa_s->current_ssid == NULL)
+ return -1;
+ if (wpa_s->sme.sae.state != SAE_COMMITTED)
+ return -1;
+ if (groups && groups[0] <= 0)
+ groups = NULL;
+ res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
+ groups);
+ if (res == SAE_SILENTLY_DISCARD) {
+ wpa_printf(MSG_DEBUG,
+ "SAE: Drop commit message due to reflection attack");
+ return 0;
+ }
+ if (res != WLAN_STATUS_SUCCESS)
+ return -1;
+
+ if (sae_process_commit(&wpa_s->sme.sae) < 0) {
+ wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
+ "commit");
+ return -1;
+ }
+
+ wpabuf_free(wpa_s->sme.sae_token);
+ wpa_s->sme.sae_token = NULL;
+ sme_send_authentication(wpa_s, wpa_s->current_bss,
+ wpa_s->current_ssid, 0);
+ return 0;
+ } else if (auth_transaction == 2) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
+ if (wpa_s->sme.sae.state != SAE_CONFIRMED)
+ return -1;
+ if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
+ return -1;
+ wpa_s->sme.sae.state = SAE_ACCEPTED;
+ sae_clear_temp_data(&wpa_s->sme.sae);
+ return 1;
+ }
+
+ return -1;
+}
+#endif /* CONFIG_SAE */
+
+
void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
{
struct wpa_ssid *ssid = wpa_s->current_ssid;
if (ssid == NULL) {
- wpa_printf(MSG_DEBUG, "SME: Ignore authentication event when "
- "network is not selected");
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
+ "when network is not selected");
return;
}
if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
- wpa_printf(MSG_DEBUG, "SME: Ignore authentication event when "
- "not in authenticating state");
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
+ "when not in authenticating state");
return;
}
if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
- wpa_printf(MSG_DEBUG, "SME: Ignore authentication with "
- "unexpected peer " MACSTR,
- MAC2STR(data->auth.peer));
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
+ "unexpected peer " MACSTR,
+ MAC2STR(data->auth.peer));
return;
}
- wpa_printf(MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
- " auth_type=%d status_code=%d",
- MAC2STR(data->auth.peer), data->auth.auth_type,
- data->auth.status_code);
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
+ " auth_type=%d auth_transaction=%d status_code=%d",
+ MAC2STR(data->auth.peer), data->auth.auth_type,
+ data->auth.auth_transaction, data->auth.status_code);
wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
data->auth.ies, data->auth.ies_len);
+ eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
+
+#ifdef CONFIG_SAE
+ if (data->auth.auth_type == WLAN_AUTH_SAE) {
+ int res;
+ res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
+ data->auth.status_code, data->auth.ies,
+ data->auth.ies_len);
+ if (res < 0) {
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
+
+ }
+ if (res != 1)
+ return;
+
+ wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
+ "4-way handshake");
+ wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
+ wpa_s->pending_bssid);
+ }
+#endif /* CONFIG_SAE */
+
if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
- wpa_printf(MSG_DEBUG, "SME: Authentication failed (status "
- "code %d)", data->auth.status_code);
+ char *ie_txt = NULL;
+
+ if (data->auth.ies && data->auth.ies_len) {
+ size_t buflen = 2 * data->auth.ies_len + 1;
+ ie_txt = os_malloc(buflen);
+ if (ie_txt) {
+ wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
+ data->auth.ies_len);
+ }
+ }
+ wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
+ " auth_type=%u auth_transaction=%u status_code=%u ie=%s",
+ MAC2STR(data->auth.peer), data->auth.auth_type,
+ data->auth.auth_transaction, data->auth.status_code,
+ ie_txt);
+ os_free(ie_txt);
if (data->auth.status_code !=
WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
wpa_s->sme.auth_alg == data->auth.auth_type ||
- wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP)
+ wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
return;
+ }
+
+ wpas_connect_work_done(wpa_s);
switch (data->auth.auth_type) {
case WLAN_AUTH_OPEN:
wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
- wpa_printf(MSG_DEBUG, "SME: Trying SHARED auth");
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
wpa_s->current_ssid);
return;
case WLAN_AUTH_SHARED_KEY:
wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
- wpa_printf(MSG_DEBUG, "SME: Trying LEAP auth");
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
wpa_s->current_ssid);
return;
#ifdef CONFIG_IEEE80211R
if (data->auth.auth_type == WLAN_AUTH_FT) {
- union wpa_event_data edata;
- os_memset(&edata, 0, sizeof(edata));
- edata.ft_ies.ies = data->auth.ies;
- edata.ft_ies.ies_len = data->auth.ies_len;
- os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
- wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
+ if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
+ data->auth.ies_len, 0,
+ data->auth.peer, NULL, 0) < 0) {
+ wpa_dbg(wpa_s, MSG_DEBUG,
+ "SME: FT Authentication response processing failed");
+ wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
+ MACSTR
+ " reason=%d locally_generated=1",
+ MAC2STR(wpa_s->pending_bssid),
+ WLAN_REASON_DEAUTH_LEAVING);
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ wpa_supplicant_mark_disassoc(wpa_s);
+ return;
+ }
}
#endif /* CONFIG_IEEE80211R */
{
struct wpa_driver_associate_params params;
struct ieee802_11_elems elems;
+#ifdef CONFIG_HT_OVERRIDES
+ struct ieee80211_ht_capabilities htcaps;
+ struct ieee80211_ht_capabilities htcaps_mask;
+#endif /* CONFIG_HT_OVERRIDES */
+#ifdef CONFIG_VHT_OVERRIDES
+ struct ieee80211_vht_capabilities vhtcaps;
+ struct ieee80211_vht_capabilities vhtcaps_mask;
+#endif /* CONFIG_VHT_OVERRIDES */
os_memset(¶ms, 0, sizeof(params));
params.bssid = bssid;
params.ssid = wpa_s->sme.ssid;
params.ssid_len = wpa_s->sme.ssid_len;
- params.freq = wpa_s->sme.freq;
+ params.freq.freq = wpa_s->sme.freq;
+ params.bg_scan_period = wpa_s->current_ssid ?
+ wpa_s->current_ssid->bg_scan_period : -1;
params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
wpa_s->sme.assoc_req_ie : NULL;
params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
+ params.pairwise_suite = wpa_s->pairwise_cipher;
+ params.group_suite = wpa_s->group_cipher;
+ params.key_mgmt_suite = wpa_s->key_mgmt;
+ params.wpa_proto = wpa_s->wpa_proto;
+#ifdef CONFIG_HT_OVERRIDES
+ os_memset(&htcaps, 0, sizeof(htcaps));
+ os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
+ params.htcaps = (u8 *) &htcaps;
+ params.htcaps_mask = (u8 *) &htcaps_mask;
+ wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms);
+#endif /* CONFIG_HT_OVERRIDES */
+#ifdef CONFIG_VHT_OVERRIDES
+ os_memset(&vhtcaps, 0, sizeof(vhtcaps));
+ os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
+ params.vhtcaps = &vhtcaps;
+ params.vhtcaps_mask = &vhtcaps_mask;
+ wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, ¶ms);
+#endif /* CONFIG_VHT_OVERRIDES */
#ifdef CONFIG_IEEE80211R
if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
params.wpa_ie = wpa_s->sme.ft_ies;
#endif /* CONFIG_IEEE80211R */
params.mode = mode;
params.mgmt_frame_protection = wpa_s->sme.mfp;
+ params.rrm_used = wpa_s->rrm.rrm_used;
if (wpa_s->sme.prev_bssid_set)
params.prev_bssid = wpa_s->sme.prev_bssid;
wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
" (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
- params.freq);
+ params.freq.freq);
wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
if (params.wpa_ie == NULL ||
ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
< 0) {
- wpa_printf(MSG_DEBUG, "SME: Could not parse own IEs?!");
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
os_memset(&elems, 0, sizeof(elems));
}
- if (elems.rsn_ie)
+ if (elems.rsn_ie) {
+ params.wpa_proto = WPA_PROTO_RSN;
wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
elems.rsn_ie_len + 2);
- else if (elems.wpa_ie)
+ } else if (elems.wpa_ie) {
+ params.wpa_proto = WPA_PROTO_WPA;
wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
elems.wpa_ie_len + 2);
- else
+ } else if (elems.osen) {
+ params.wpa_proto = WPA_PROTO_OSEN;
+ wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
+ elems.osen_len + 2);
+ } else
wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
- if (elems.p2p &&
- (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
+ if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
params.p2p = 1;
if (wpa_s->parent->set_sta_uapsd)
params.uapsd = -1;
if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
- wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
- "failed");
- wpa_supplicant_req_scan(wpa_s, 5, 0);
+ wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
+ "driver failed");
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
+ os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
return;
}
- /* TODO: add timeout on association */
+ eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
+ NULL);
}
const u8 *ies, size_t ies_len)
{
if (md == NULL || ies == NULL) {
- wpa_printf(MSG_DEBUG, "SME: Remove mobility domain");
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
os_free(wpa_s->sme.ft_ies);
wpa_s->sme.ft_ies = NULL;
wpa_s->sme.ft_ies_len = 0;
}
-void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
- union wpa_event_data *data)
+static void sme_deauth(struct wpa_supplicant *wpa_s)
{
int bssid_changed;
- int timeout = 5000;
-
- wpa_printf(MSG_DEBUG, "SME: Association with " MACSTR " failed: "
- "status code %d", MAC2STR(wpa_s->pending_bssid),
- data->assoc_reject.status_code);
bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
- /*
- * For now, unconditionally terminate the previous authentication. In
- * theory, this should not be needed, but mac80211 gets quite confused
- * if the authentication is left pending.. Some roaming cases might
- * benefit from using the previous authentication, so this could be
- * optimized in the future.
- */
if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
WLAN_REASON_DEAUTH_LEAVING) < 0) {
- wpa_msg(wpa_s, MSG_INFO,
- "Deauth request to the driver failed");
+ wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
+ "failed");
}
wpa_s->sme.prev_bssid_set = 0;
- if (wpa_blacklist_add(wpa_s, wpa_s->pending_bssid) == 0) {
- struct wpa_blacklist *b;
- b = wpa_blacklist_get(wpa_s, wpa_s->pending_bssid);
- if (b && b->count < 3) {
- /*
- * Speed up next attempt if there could be other APs
- * that could accept association.
- */
- timeout = 100;
- }
- }
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
os_memset(wpa_s->bssid, 0, ETH_ALEN);
os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
if (bssid_changed)
wpas_notify_bssid_changed(wpa_s);
+}
+
+
+void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
+ union wpa_event_data *data)
+{
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
+ "status code %d", MAC2STR(wpa_s->pending_bssid),
+ data->assoc_reject.status_code);
+
+ eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
+
+#ifdef CONFIG_SAE
+ if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
+ wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
+ wpa_dbg(wpa_s, MSG_DEBUG,
+ "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
+ wpa_sm_aborted_cached(wpa_s->wpa);
+ wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
+ if (wpa_s->current_bss) {
+ struct wpa_bss *bss = wpa_s->current_bss;
+ struct wpa_ssid *ssid = wpa_s->current_ssid;
+
+ wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
+ WLAN_REASON_DEAUTH_LEAVING);
+ wpas_connect_work_done(wpa_s);
+ wpa_supplicant_mark_disassoc(wpa_s);
+ wpa_supplicant_connect(wpa_s, bss, ssid);
+ return;
+ }
+ }
+#endif /* CONFIG_SAE */
/*
- * TODO: if more than one possible AP is available in scan results,
- * could try the other ones before requesting a new scan.
+ * For now, unconditionally terminate the previous authentication. In
+ * theory, this should not be needed, but mac80211 gets quite confused
+ * if the authentication is left pending.. Some roaming cases might
+ * benefit from using the previous authentication, so this could be
+ * optimized in the future.
*/
- wpa_supplicant_req_scan(wpa_s, timeout / 1000,
- 1000 * (timeout % 1000));
+ sme_deauth(wpa_s);
}
void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
- wpa_printf(MSG_DEBUG, "SME: Authentication timed out");
- wpa_supplicant_req_scan(wpa_s, 5, 0);
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ wpa_supplicant_mark_disassoc(wpa_s);
}
void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
- wpa_printf(MSG_DEBUG, "SME: Association timed out");
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
wpa_supplicant_mark_disassoc(wpa_s);
- wpa_supplicant_req_scan(wpa_s, 5, 0);
}
void sme_event_disassoc(struct wpa_supplicant *wpa_s,
- union wpa_event_data *data)
+ struct disassoc_info *info)
{
- wpa_printf(MSG_DEBUG, "SME: Disassociation event received");
- if (wpa_s->sme.prev_bssid_set &&
- !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
+ if (wpa_s->sme.prev_bssid_set) {
/*
* cfg80211/mac80211 can get into somewhat confused state if
* the AP only disassociates us and leaves us in authenticated
* state. For now, force the state to be cleared to avoid
* confusing errors if we try to associate with the AP again.
*/
- wpa_printf(MSG_DEBUG, "SME: Deauthenticate to clear driver "
- "state");
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
+ "driver state");
wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
WLAN_REASON_DEAUTH_LEAVING);
}
}
+
+
+static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
+{
+ struct wpa_supplicant *wpa_s = eloop_ctx;
+ if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
+ wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
+ sme_deauth(wpa_s);
+ }
+}
+
+
+static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
+{
+ struct wpa_supplicant *wpa_s = eloop_ctx;
+ if (wpa_s->wpa_state == WPA_ASSOCIATING) {
+ wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
+ sme_deauth(wpa_s);
+ }
+}
+
+
+void sme_state_changed(struct wpa_supplicant *wpa_s)
+{
+ /* Make sure timers are cleaned up appropriately. */
+ if (wpa_s->wpa_state != WPA_ASSOCIATING)
+ eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
+ if (wpa_s->wpa_state != WPA_AUTHENTICATING)
+ eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
+}
+
+
+void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
+ const u8 *prev_pending_bssid)
+{
+ /*
+ * mac80211-workaround to force deauth on failed auth cmd,
+ * requires us to remain in authenticating state to allow the
+ * second authentication attempt to be continued properly.
+ */
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
+ "to proceed after disconnection event");
+ wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
+ os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
+
+ /*
+ * Re-arm authentication timer in case auth fails for whatever reason.
+ */
+ eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
+ eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
+ NULL);
+}
+
+
+void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
+{
+ wpa_s->sme.prev_bssid_set = 0;
+#ifdef CONFIG_SAE
+ wpabuf_free(wpa_s->sme.sae_token);
+ wpa_s->sme.sae_token = NULL;
+ sae_clear_data(&wpa_s->sme.sae);
+#endif /* CONFIG_SAE */
+#ifdef CONFIG_IEEE80211R
+ if (wpa_s->sme.ft_ies)
+ sme_update_ft_ies(wpa_s, NULL, NULL, 0);
+#endif /* CONFIG_IEEE80211R */
+}
+
+
+void sme_deinit(struct wpa_supplicant *wpa_s)
+{
+ os_free(wpa_s->sme.ft_ies);
+ wpa_s->sme.ft_ies = NULL;
+ wpa_s->sme.ft_ies_len = 0;
+#ifdef CONFIG_IEEE80211W
+ sme_stop_sa_query(wpa_s);
+#endif /* CONFIG_IEEE80211W */
+ sme_clear_on_disassoc(wpa_s);
+
+ eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
+ eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
+ eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
+}
+
+
+static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
+ const u8 *chan_list, u8 num_channels,
+ u8 num_intol)
+{
+ struct ieee80211_2040_bss_coex_ie *bc_ie;
+ struct ieee80211_2040_intol_chan_report *ic_report;
+ struct wpabuf *buf;
+
+ wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
+ " (num_channels=%u num_intol=%u)",
+ MAC2STR(wpa_s->bssid), num_channels, num_intol);
+ wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
+ chan_list, num_channels);
+
+ buf = wpabuf_alloc(2 + /* action.category + action_code */
+ sizeof(struct ieee80211_2040_bss_coex_ie) +
+ sizeof(struct ieee80211_2040_intol_chan_report) +
+ num_channels);
+ if (buf == NULL)
+ return;
+
+ wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
+ wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
+
+ bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
+ bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
+ bc_ie->length = 1;
+ if (num_intol)
+ bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
+
+ if (num_channels > 0) {
+ ic_report = wpabuf_put(buf, sizeof(*ic_report));
+ ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
+ ic_report->length = num_channels + 1;
+ ic_report->op_class = 0;
+ os_memcpy(wpabuf_put(buf, num_channels), chan_list,
+ num_channels);
+ }
+
+ if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
+ wpa_s->own_addr, wpa_s->bssid,
+ wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
+ wpa_msg(wpa_s, MSG_INFO,
+ "SME: Failed to send 20/40 BSS Coexistence frame");
+ }
+
+ wpabuf_free(buf);
+}
+
+
+int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
+{
+ struct wpa_bss *bss;
+ const u8 *ie;
+ u16 ht_cap;
+ u8 chan_list[P2P_MAX_CHANNELS], channel;
+ u8 num_channels = 0, num_intol = 0, i;
+
+ if (!wpa_s->sme.sched_obss_scan)
+ return 0;
+
+ wpa_s->sme.sched_obss_scan = 0;
+ if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
+ return 1;
+
+ /*
+ * Check whether AP uses regulatory triplet or channel triplet in
+ * country info. Right now the operating class of the BSS channel
+ * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
+ * based on the assumption that operating class triplet is not used in
+ * beacon frame. If the First Channel Number/Operating Extension
+ * Identifier octet has a positive integer value of 201 or greater,
+ * then its operating class triplet.
+ *
+ * TODO: If Supported Operating Classes element is present in beacon
+ * frame, have to lookup operating class in Annex E and fill them in
+ * 2040 coex frame.
+ */
+ ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
+ if (ie && (ie[1] >= 6) && (ie[5] >= 201))
+ return 1;
+
+ os_memset(chan_list, 0, sizeof(chan_list));
+
+ dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
+ /* Skip other band bss */
+ enum hostapd_hw_mode mode;
+ mode = ieee80211_freq_to_chan(bss->freq, &channel);
+ if (mode != HOSTAPD_MODE_IEEE80211G &&
+ mode != HOSTAPD_MODE_IEEE80211B)
+ continue;
+
+ ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
+ ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
+ wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
+ " freq=%u chan=%u ht_cap=0x%x",
+ MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
+
+ if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
+ if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
+ num_intol++;
+
+ /* Check whether the channel is already considered */
+ for (i = 0; i < num_channels; i++) {
+ if (channel == chan_list[i])
+ break;
+ }
+ if (i != num_channels)
+ continue;
+
+ chan_list[num_channels++] = channel;
+ }
+ }
+
+ sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
+ return 1;
+}
+
+
+static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
+ u16 num_modes,
+ enum hostapd_hw_mode mode)
+{
+ u16 i;
+
+ for (i = 0; i < num_modes; i++) {
+ if (modes[i].mode == mode)
+ return &modes[i];
+ }
+
+ return NULL;
+}
+
+
+static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
+ struct wpa_driver_scan_params *params)
+{
+ /* Include only affected channels */
+ struct hostapd_hw_modes *mode;
+ int count, i;
+ int start, end;
+
+ mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
+ HOSTAPD_MODE_IEEE80211G);
+ if (mode == NULL) {
+ /* No channels supported in this band - use empty list */
+ params->freqs = os_zalloc(sizeof(int));
+ return;
+ }
+
+ if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
+ wpa_s->current_bss) {
+ const u8 *ie;
+
+ ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
+ if (ie && ie[1] >= 2) {
+ u8 o;
+
+ o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
+ if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
+ wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
+ else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
+ wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
+ }
+ }
+
+ start = wpa_s->assoc_freq - 10;
+ end = wpa_s->assoc_freq + 10;
+ switch (wpa_s->sme.ht_sec_chan) {
+ case HT_SEC_CHAN_UNKNOWN:
+ /* HT40+ possible on channels 1..9 */
+ if (wpa_s->assoc_freq <= 2452)
+ start -= 20;
+ /* HT40- possible on channels 5-13 */
+ if (wpa_s->assoc_freq >= 2432)
+ end += 20;
+ break;
+ case HT_SEC_CHAN_ABOVE:
+ end += 20;
+ break;
+ case HT_SEC_CHAN_BELOW:
+ start -= 20;
+ break;
+ }
+ wpa_printf(MSG_DEBUG,
+ "OBSS: assoc_freq %d possible affected range %d-%d",
+ wpa_s->assoc_freq, start, end);
+
+ params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
+ if (params->freqs == NULL)
+ return;
+ for (count = 0, i = 0; i < mode->num_channels; i++) {
+ int freq;
+
+ if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
+ continue;
+ freq = mode->channels[i].freq;
+ if (freq - 10 >= end || freq + 10 <= start)
+ continue; /* not affected */
+ params->freqs[count++] = freq;
+ }
+}
+
+
+static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
+{
+ struct wpa_supplicant *wpa_s = eloop_ctx;
+ struct wpa_driver_scan_params params;
+
+ if (!wpa_s->current_bss) {
+ wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
+ return;
+ }
+
+ os_memset(¶ms, 0, sizeof(params));
+ wpa_obss_scan_freqs_list(wpa_s, ¶ms);
+ params.low_priority = 1;
+ wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
+
+ if (wpa_supplicant_trigger_scan(wpa_s, ¶ms))
+ wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
+ else
+ wpa_s->sme.sched_obss_scan = 1;
+ os_free(params.freqs);
+
+ eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
+ sme_obss_scan_timeout, wpa_s, NULL);
+}
+
+
+void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
+{
+ const u8 *ie;
+ struct wpa_bss *bss = wpa_s->current_bss;
+ struct wpa_ssid *ssid = wpa_s->current_ssid;
+ struct hostapd_hw_modes *hw_mode = NULL;
+ int i;
+
+ eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
+ wpa_s->sme.sched_obss_scan = 0;
+ wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
+ if (!enable)
+ return;
+
+ /*
+ * Schedule OBSS scan if driver is using station SME in wpa_supplicant
+ * or it expects OBSS scan to be performed by wpa_supplicant.
+ */
+ if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
+ (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
+ ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
+ return;
+
+ if (!wpa_s->hw.modes)
+ return;
+
+ /* only HT caps in 11g mode are relevant */
+ for (i = 0; i < wpa_s->hw.num_modes; i++) {
+ hw_mode = &wpa_s->hw.modes[i];
+ if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
+ break;
+ }
+
+ /* Driver does not support HT40 for 11g or doesn't have 11g. */
+ if (i == wpa_s->hw.num_modes || !hw_mode ||
+ !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
+ return;
+
+ if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
+ return; /* Not associated on 2.4 GHz band */
+
+ /* Check whether AP supports HT40 */
+ ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
+ if (!ie || ie[1] < 2 ||
+ !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
+ return; /* AP does not support HT40 */
+
+ ie = wpa_bss_get_ie(wpa_s->current_bss,
+ WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
+ if (!ie || ie[1] < 14)
+ return; /* AP does not request OBSS scans */
+
+ wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
+ if (wpa_s->sme.obss_scan_int < 10) {
+ wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
+ "replaced with the minimum 10 sec",
+ wpa_s->sme.obss_scan_int);
+ wpa_s->sme.obss_scan_int = 10;
+ }
+ wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
+ wpa_s->sme.obss_scan_int);
+ eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
+ sme_obss_scan_timeout, wpa_s, NULL);
+}
+
+
+#ifdef CONFIG_IEEE80211W
+
+static const unsigned int sa_query_max_timeout = 1000;
+static const unsigned int sa_query_retry_timeout = 201;
+
+static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
+{
+ u32 tu;
+ struct os_reltime now, passed;
+ os_get_reltime(&now);
+ os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
+ tu = (passed.sec * 1000000 + passed.usec) / 1024;
+ if (sa_query_max_timeout < tu) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
+ sme_stop_sa_query(wpa_s);
+ wpa_supplicant_deauthenticate(
+ wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
+ return 1;
+ }
+
+ return 0;
+}
+
+
+static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
+ const u8 *trans_id)
+{
+ u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
+ MACSTR, MAC2STR(wpa_s->bssid));
+ wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
+ trans_id, WLAN_SA_QUERY_TR_ID_LEN);
+ req[0] = WLAN_ACTION_SA_QUERY;
+ req[1] = WLAN_SA_QUERY_REQUEST;
+ os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
+ if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
+ wpa_s->own_addr, wpa_s->bssid,
+ req, sizeof(req), 0) < 0)
+ wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
+ "Request");
+}
+
+
+static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
+{
+ struct wpa_supplicant *wpa_s = eloop_ctx;
+ unsigned int timeout, sec, usec;
+ u8 *trans_id, *nbuf;
+
+ if (wpa_s->sme.sa_query_count > 0 &&
+ sme_check_sa_query_timeout(wpa_s))
+ return;
+
+ nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
+ wpa_s->sme.sa_query_count + 1,
+ WLAN_SA_QUERY_TR_ID_LEN);
+ if (nbuf == NULL)
+ return;
+ if (wpa_s->sme.sa_query_count == 0) {
+ /* Starting a new SA Query procedure */
+ os_get_reltime(&wpa_s->sme.sa_query_start);
+ }
+ trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
+ wpa_s->sme.sa_query_trans_id = nbuf;
+ wpa_s->sme.sa_query_count++;
+
+ if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
+ wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
+ return;
+ }
+
+ timeout = sa_query_retry_timeout;
+ sec = ((timeout / 1000) * 1024) / 1000;
+ usec = (timeout % 1000) * 1024;
+ eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
+
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
+ wpa_s->sme.sa_query_count);
+
+ sme_send_sa_query_req(wpa_s, trans_id);
+}
+
+
+static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
+{
+ sme_sa_query_timer(wpa_s, NULL);
+}
+
+
+static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
+{
+ eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
+ os_free(wpa_s->sme.sa_query_trans_id);
+ wpa_s->sme.sa_query_trans_id = NULL;
+ wpa_s->sme.sa_query_count = 0;
+}
+
+
+void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
+ const u8 *da, u16 reason_code)
+{
+ struct wpa_ssid *ssid;
+ struct os_reltime now;
+
+ if (wpa_s->wpa_state != WPA_COMPLETED)
+ return;
+ ssid = wpa_s->current_ssid;
+ if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
+ return;
+ if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
+ return;
+ if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
+ reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
+ return;
+ if (wpa_s->sme.sa_query_count > 0)
+ return;
+
+ os_get_reltime(&now);
+ if (wpa_s->sme.last_unprot_disconnect.sec &&
+ !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
+ return; /* limit SA Query procedure frequency */
+ wpa_s->sme.last_unprot_disconnect = now;
+
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
+ "possible AP/STA state mismatch - trigger SA Query");
+ sme_start_sa_query(wpa_s);
+}
+
+
+void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
+ const u8 *data, size_t len)
+{
+ int i;
+
+ if (wpa_s->sme.sa_query_trans_id == NULL ||
+ len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
+ data[0] != WLAN_SA_QUERY_RESPONSE)
+ return;
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
+ MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
+
+ if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
+ return;
+
+ for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
+ if (os_memcmp(wpa_s->sme.sa_query_trans_id +
+ i * WLAN_SA_QUERY_TR_ID_LEN,
+ data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
+ break;
+ }
+
+ if (i >= wpa_s->sme.sa_query_count) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
+ "transaction identifier found");
+ return;
+ }
+
+ wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
+ "from " MACSTR, MAC2STR(sa));
+ sme_stop_sa_query(wpa_s);
+}
+
+#endif /* CONFIG_IEEE80211W */
projects / mech_eap.git / blobdiff