1 /*
2 * WPA Supplicant - Driver event processing
3 * Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
15 #include "includes.h"
17 #include "common.h"
18 #include "eapol_supp/eapol_supp_sm.h"
19 #include "rsn_supp/wpa.h"
20 #include "eloop.h"
21 #include "config.h"
22 #include "l2_packet/l2_packet.h"
23 #include "wpa_supplicant_i.h"
24 #include "driver_i.h"
25 #include "pcsc_funcs.h"
26 #include "rsn_supp/preauth.h"
27 #include "rsn_supp/pmksa_cache.h"
28 #include "common/wpa_ctrl.h"
29 #include "eap_peer/eap.h"
30 #include "ap/hostapd.h"
31 #include "p2p/p2p.h"
32 #include "notify.h"
33 #include "common/ieee802_11_defs.h"
34 #include "common/ieee802_11_common.h"
35 #include "crypto/random.h"
36 #include "blacklist.h"
37 #include "wpas_glue.h"
38 #include "wps_supplicant.h"
39 #include "ibss_rsn.h"
40 #include "sme.h"
41 #include "p2p_supplicant.h"
42 #include "bgscan.h"
43 #include "ap.h"
44 #include "bss.h"
45 #include "mlme.h"
46 #include "scan.h"
49 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
50 {
51 struct wpa_ssid *ssid, *old_ssid;
53 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
54 return 0;
56 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
57 "information");
58 ssid = wpa_supplicant_get_ssid(wpa_s);
59 if (ssid == NULL) {
60 wpa_msg(wpa_s, MSG_INFO,
61 "No network configuration found for the current AP");
62 return -1;
63 }
65 if (ssid->disabled) {
66 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
67 return -1;
68 }
70 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
71 "current AP");
72 if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
73 WPA_KEY_MGMT_WPA_NONE |
74 WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
75 WPA_KEY_MGMT_PSK_SHA256 |
76 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
77 u8 wpa_ie[80];
78 size_t wpa_ie_len = sizeof(wpa_ie);
79 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
80 wpa_ie, &wpa_ie_len);
81 } else {
82 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
83 }
85 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
86 eapol_sm_invalidate_cached_session(wpa_s->eapol);
87 old_ssid = wpa_s->current_ssid;
88 wpa_s->current_ssid = ssid;
89 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
90 wpa_supplicant_initiate_eapol(wpa_s);
91 if (old_ssid != wpa_s->current_ssid)
92 wpas_notify_network_changed(wpa_s);
94 return 0;
95 }
98 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
99 void *sock_ctx)
100 {
101 struct wpa_supplicant *wpa_s = eloop_ctx;
103 if (wpa_s->countermeasures) {
104 wpa_s->countermeasures = 0;
105 wpa_drv_set_countermeasures(wpa_s, 0);
106 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
107 wpa_supplicant_req_scan(wpa_s, 0, 0);
108 }
109 }
112 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
113 {
114 int bssid_changed;
116 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
117 return;
119 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
120 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
121 os_memset(wpa_s->bssid, 0, ETH_ALEN);
122 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
123 wpa_s->current_bss = NULL;
124 wpa_s->assoc_freq = 0;
125 if (bssid_changed)
126 wpas_notify_bssid_changed(wpa_s);
128 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
129 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
130 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
131 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
132 wpa_s->ap_ies_from_associnfo = 0;
133 }
136 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
137 {
138 struct wpa_ie_data ie;
139 int pmksa_set = -1;
140 size_t i;
142 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
143 ie.pmkid == NULL)
144 return;
146 for (i = 0; i < ie.num_pmkid; i++) {
147 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
148 ie.pmkid + i * PMKID_LEN,
149 NULL, NULL, 0);
150 if (pmksa_set == 0) {
151 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
152 break;
153 }
154 }
156 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
157 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
158 }
161 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
162 union wpa_event_data *data)
163 {
164 if (data == NULL) {
165 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
166 "event");
167 return;
168 }
169 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
170 " index=%d preauth=%d",
171 MAC2STR(data->pmkid_candidate.bssid),
172 data->pmkid_candidate.index,
173 data->pmkid_candidate.preauth);
175 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
176 data->pmkid_candidate.index,
177 data->pmkid_candidate.preauth);
178 }
181 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
182 {
183 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
184 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
185 return 0;
187 #ifdef IEEE8021X_EAPOL
188 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
189 wpa_s->current_ssid &&
190 !(wpa_s->current_ssid->eapol_flags &
191 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
192 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
193 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
194 * plaintext or static WEP keys). */
195 return 0;
196 }
197 #endif /* IEEE8021X_EAPOL */
199 return 1;
200 }
203 /**
204 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
205 * @wpa_s: pointer to wpa_supplicant data
206 * @ssid: Configuration data for the network
207 * Returns: 0 on success, -1 on failure
208 *
209 * This function is called when starting authentication with a network that is
210 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
211 */
212 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
213 struct wpa_ssid *ssid)
214 {
215 #ifdef IEEE8021X_EAPOL
216 int aka = 0, sim = 0, type;
218 if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
219 return 0;
221 if (ssid->eap.eap_methods == NULL) {
222 sim = 1;
223 aka = 1;
224 } else {
225 struct eap_method_type *eap = ssid->eap.eap_methods;
226 while (eap->vendor != EAP_VENDOR_IETF ||
227 eap->method != EAP_TYPE_NONE) {
228 if (eap->vendor == EAP_VENDOR_IETF) {
229 if (eap->method == EAP_TYPE_SIM)
230 sim = 1;
231 else if (eap->method == EAP_TYPE_AKA)
232 aka = 1;
233 }
234 eap++;
235 }
236 }
238 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
239 sim = 0;
240 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
241 aka = 0;
243 if (!sim && !aka) {
244 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
245 "use SIM, but neither EAP-SIM nor EAP-AKA are "
246 "enabled");
247 return 0;
248 }
250 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
251 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
252 if (sim && aka)
253 type = SCARD_TRY_BOTH;
254 else if (aka)
255 type = SCARD_USIM_ONLY;
256 else
257 type = SCARD_GSM_SIM_ONLY;
259 wpa_s->scard = scard_init(type);
260 if (wpa_s->scard == NULL) {
261 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
262 "(pcsc-lite)");
263 return -1;
264 }
265 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
266 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
267 #endif /* IEEE8021X_EAPOL */
269 return 0;
270 }
273 #ifndef CONFIG_NO_SCAN_PROCESSING
274 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
275 struct wpa_ssid *ssid)
276 {
277 int i, privacy = 0;
279 if (ssid->mixed_cell)
280 return 1;
282 #ifdef CONFIG_WPS
283 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
284 return 1;
285 #endif /* CONFIG_WPS */
287 for (i = 0; i < NUM_WEP_KEYS; i++) {
288 if (ssid->wep_key_len[i]) {
289 privacy = 1;
290 break;
291 }
292 }
293 #ifdef IEEE8021X_EAPOL
294 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
295 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
296 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
297 privacy = 1;
298 #endif /* IEEE8021X_EAPOL */
300 if (bss->caps & IEEE80211_CAP_PRIVACY)
301 return privacy;
302 return !privacy;
303 }
306 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
307 struct wpa_ssid *ssid,
308 struct wpa_scan_res *bss)
309 {
310 struct wpa_ie_data ie;
311 int proto_match = 0;
312 const u8 *rsn_ie, *wpa_ie;
313 int ret;
314 int wep_ok;
316 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
317 if (ret >= 0)
318 return ret;
320 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
321 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
322 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
323 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
324 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
326 rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
327 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
328 proto_match++;
330 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
331 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
332 "failed");
333 break;
334 }
336 if (wep_ok &&
337 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
338 {
339 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
340 "in RSN IE");
341 return 1;
342 }
344 if (!(ie.proto & ssid->proto)) {
345 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
346 "mismatch");
347 break;
348 }
350 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
351 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
352 "cipher mismatch");
353 break;
354 }
356 if (!(ie.group_cipher & ssid->group_cipher)) {
357 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
358 "cipher mismatch");
359 break;
360 }
362 if (!(ie.key_mgmt & ssid->key_mgmt)) {
363 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
364 "mismatch");
365 break;
366 }
368 #ifdef CONFIG_IEEE80211W
369 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
370 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
371 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
372 "frame protection");
373 break;
374 }
375 #endif /* CONFIG_IEEE80211W */
377 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
378 return 1;
379 }
381 wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
382 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
383 proto_match++;
385 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
386 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
387 "failed");
388 break;
389 }
391 if (wep_ok &&
392 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
393 {
394 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
395 "in WPA IE");
396 return 1;
397 }
399 if (!(ie.proto & ssid->proto)) {
400 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
401 "mismatch");
402 break;
403 }
405 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
406 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
407 "cipher mismatch");
408 break;
409 }
411 if (!(ie.group_cipher & ssid->group_cipher)) {
412 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
413 "cipher mismatch");
414 break;
415 }
417 if (!(ie.key_mgmt & ssid->key_mgmt)) {
418 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
419 "mismatch");
420 break;
421 }
423 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
424 return 1;
425 }
427 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
428 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
429 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
430 return 0;
431 }
433 /* Allow in non-WPA configuration */
434 return 1;
435 }
438 static int freq_allowed(int *freqs, int freq)
439 {
440 int i;
442 if (freqs == NULL)
443 return 1;
445 for (i = 0; freqs[i]; i++)
446 if (freqs[i] == freq)
447 return 1;
448 return 0;
449 }
452 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
453 int i, struct wpa_scan_res *bss,
454 struct wpa_ssid *group)
455 {
456 const u8 *ssid_;
457 u8 wpa_ie_len, rsn_ie_len, ssid_len;
458 int wpa;
459 struct wpa_blacklist *e;
460 const u8 *ie;
461 struct wpa_ssid *ssid;
463 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
464 ssid_ = ie ? ie + 2 : (u8 *) "";
465 ssid_len = ie ? ie[1] : 0;
467 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
468 wpa_ie_len = ie ? ie[1] : 0;
470 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
471 rsn_ie_len = ie ? ie[1] : 0;
473 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
474 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
475 i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
476 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
477 wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
479 e = wpa_blacklist_get(wpa_s, bss->bssid);
480 if (e) {
481 int limit = 1;
482 if (wpa_supplicant_enabled_networks(wpa_s->conf) == 1) {
483 /*
484 * When only a single network is enabled, we can
485 * trigger blacklisting on the first failure. This
486 * should not be done with multiple enabled networks to
487 * avoid getting forced to move into a worse ESS on
488 * single error if there are no other BSSes of the
489 * current ESS.
490 */
491 limit = 0;
492 }
493 if (e->count > limit) {
494 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
495 "(count=%d limit=%d)", e->count, limit);
496 return 0;
497 }
498 }
500 if (ssid_len == 0) {
501 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
502 return 0;
503 }
505 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
507 for (ssid = group; ssid; ssid = ssid->pnext) {
508 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
510 if (ssid->disabled) {
511 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
512 continue;
513 }
515 #ifdef CONFIG_WPS
516 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
517 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
518 "(WPS)");
519 continue;
520 }
522 if (wpa && ssid->ssid_len == 0 &&
523 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
524 check_ssid = 0;
526 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
527 /* Only allow wildcard SSID match if an AP
528 * advertises active WPS operation that matches
529 * with our mode. */
530 check_ssid = 1;
531 if (ssid->ssid_len == 0 &&
532 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
533 check_ssid = 0;
534 }
535 #endif /* CONFIG_WPS */
537 if (check_ssid &&
538 (ssid_len != ssid->ssid_len ||
539 os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
540 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
541 continue;
542 }
544 if (ssid->bssid_set &&
545 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
546 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
547 continue;
548 }
550 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
551 continue;
553 if (!wpa &&
554 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
555 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
556 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
557 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
558 "not allowed");
559 continue;
560 }
562 if (!wpa && !wpa_supplicant_match_privacy(bss, ssid)) {
563 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
564 "mismatch");
565 continue;
566 }
568 if (!wpa && (bss->caps & IEEE80211_CAP_IBSS)) {
569 wpa_dbg(wpa_s, MSG_DEBUG, " skip - IBSS (adhoc) "
570 "network");
571 continue;
572 }
574 if (!freq_allowed(ssid->freq_list, bss->freq)) {
575 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
576 "allowed");
577 continue;
578 }
580 #ifdef CONFIG_P2P
581 /*
582 * TODO: skip the AP if its P2P IE has Group Formation
583 * bit set in the P2P Group Capability Bitmap and we
584 * are not in Group Formation with that device.
585 */
586 #endif /* CONFIG_P2P */
588 /* Matching configuration found */
589 return ssid;
590 }
592 /* No matching configuration found */
593 return 0;
594 }
597 static struct wpa_bss *
598 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
599 struct wpa_scan_results *scan_res,
600 struct wpa_ssid *group,
601 struct wpa_ssid **selected_ssid)
602 {
603 size_t i;
605 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
606 group->priority);
608 for (i = 0; i < scan_res->num; i++) {
609 struct wpa_scan_res *bss = scan_res->res[i];
610 const u8 *ie, *ssid;
611 u8 ssid_len;
613 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
614 if (!*selected_ssid)
615 continue;
617 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
618 ssid = ie ? ie + 2 : (u8 *) "";
619 ssid_len = ie ? ie[1] : 0;
621 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
622 " ssid='%s'",
623 MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
624 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
625 }
627 return NULL;
628 }
631 static struct wpa_bss *
632 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
633 struct wpa_scan_results *scan_res,
634 struct wpa_ssid **selected_ssid)
635 {
636 struct wpa_bss *selected = NULL;
637 int prio;
639 while (selected == NULL) {
640 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
641 selected = wpa_supplicant_select_bss(
642 wpa_s, scan_res, wpa_s->conf->pssid[prio],
643 selected_ssid);
644 if (selected)
645 break;
646 }
648 if (selected == NULL && wpa_s->blacklist) {
649 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
650 "blacklist and try again");
651 wpa_blacklist_clear(wpa_s);
652 wpa_s->blacklist_cleared++;
653 } else if (selected == NULL)
654 break;
655 }
657 return selected;
658 }
661 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
662 int timeout_sec, int timeout_usec)
663 {
664 if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
665 /*
666 * No networks are enabled; short-circuit request so
667 * we don't wait timeout seconds before transitioning
668 * to INACTIVE state.
669 */
670 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
671 return;
672 }
673 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
674 }
677 void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
678 struct wpa_bss *selected,
679 struct wpa_ssid *ssid)
680 {
681 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
682 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
683 "PBC session overlap");
684 #ifdef CONFIG_P2P
685 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
686 return;
687 #endif /* CONFIG_P2P */
689 #ifdef CONFIG_WPS
690 wpas_wps_cancel(wpa_s);
691 #endif /* CONFIG_WPS */
692 return;
693 }
695 /*
696 * Do not trigger new association unless the BSSID has changed or if
697 * reassociation is requested. If we are in process of associating with
698 * the selected BSSID, do not trigger new attempt.
699 */
700 if (wpa_s->reassociate ||
701 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
702 (wpa_s->wpa_state != WPA_ASSOCIATING ||
703 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
704 0))) {
705 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
706 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
707 return;
708 }
709 wpa_supplicant_associate(wpa_s, selected, ssid);
710 } else {
711 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
712 "selected AP");
713 }
714 }
717 static struct wpa_ssid *
718 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
719 {
720 int prio;
721 struct wpa_ssid *ssid;
723 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
724 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
725 {
726 if (ssid->disabled)
727 continue;
728 if (ssid->mode == IEEE80211_MODE_IBSS ||
729 ssid->mode == IEEE80211_MODE_AP)
730 return ssid;
731 }
732 }
733 return NULL;
734 }
737 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
738 * on BSS added and BSS changed events */
739 static void wpa_supplicant_rsn_preauth_scan_results(
740 struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res)
741 {
742 int i;
744 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
745 return;
747 for (i = scan_res->num - 1; i >= 0; i--) {
748 const u8 *ssid, *rsn;
749 struct wpa_scan_res *r;
751 r = scan_res->res[i];
753 ssid = wpa_scan_get_ie(r, WLAN_EID_SSID);
754 if (ssid == NULL)
755 continue;
757 rsn = wpa_scan_get_ie(r, WLAN_EID_RSN);
758 if (rsn == NULL)
759 continue;
761 rsn_preauth_scan_result(wpa_s->wpa, r->bssid, ssid, rsn);
762 }
764 }
767 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
768 struct wpa_bss *selected,
769 struct wpa_ssid *ssid,
770 struct wpa_scan_results *scan_res)
771 {
772 size_t i;
773 struct wpa_scan_res *current_bss = NULL;
774 int min_diff;
776 if (wpa_s->reassociate)
777 return 1; /* explicit request to reassociate */
778 if (wpa_s->wpa_state < WPA_ASSOCIATED)
779 return 1; /* we are not associated; continue */
780 if (wpa_s->current_ssid == NULL)
781 return 1; /* unknown current SSID */
782 if (wpa_s->current_ssid != ssid)
783 return 1; /* different network block */
785 for (i = 0; i < scan_res->num; i++) {
786 struct wpa_scan_res *res = scan_res->res[i];
787 const u8 *ie;
788 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
789 continue;
791 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
792 if (ie == NULL)
793 continue;
794 if (ie[1] != wpa_s->current_ssid->ssid_len ||
795 os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
796 continue;
797 current_bss = res;
798 break;
799 }
801 if (!current_bss)
802 return 1; /* current BSS not seen in scan results */
804 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
805 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
806 MAC2STR(current_bss->bssid), current_bss->level);
807 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
808 MAC2STR(selected->bssid), selected->level);
810 if (wpa_s->current_ssid->bssid_set &&
811 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
812 0) {
813 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
814 "has preferred BSSID");
815 return 1;
816 }
818 min_diff = 2;
819 if (current_bss->level < 0) {
820 if (current_bss->level < -85)
821 min_diff = 1;
822 else if (current_bss->level < -80)
823 min_diff = 2;
824 else if (current_bss->level < -75)
825 min_diff = 3;
826 else if (current_bss->level < -70)
827 min_diff = 4;
828 else
829 min_diff = 5;
830 }
831 if (abs(current_bss->level - selected->level) < min_diff) {
832 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
833 "in signal level");
834 return 0;
835 }
837 return 1;
838 }
840 /* Return < 0 if no scan results could be fetched. */
841 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
842 union wpa_event_data *data)
843 {
844 struct wpa_bss *selected;
845 struct wpa_ssid *ssid = NULL;
846 struct wpa_scan_results *scan_res;
847 int ap = 0;
849 #ifdef CONFIG_AP
850 if (wpa_s->ap_iface)
851 ap = 1;
852 #endif /* CONFIG_AP */
854 wpa_supplicant_notify_scanning(wpa_s, 0);
856 scan_res = wpa_supplicant_get_scan_results(wpa_s,
857 data ? &data->scan_info :
858 NULL, 1);
859 if (scan_res == NULL) {
860 if (wpa_s->conf->ap_scan == 2 || ap)
861 return -1;
862 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
863 "scanning again");
864 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
865 return -1;
866 }
868 #ifndef CONFIG_NO_RANDOM_POOL
869 size_t i, num;
870 num = scan_res->num;
871 if (num > 10)
872 num = 10;
873 for (i = 0; i < num; i++) {
874 u8 buf[5];
875 struct wpa_scan_res *res = scan_res->res[i];
876 buf[0] = res->bssid[5];
877 buf[1] = res->qual & 0xff;
878 buf[2] = res->noise & 0xff;
879 buf[3] = res->level & 0xff;
880 buf[4] = res->tsf & 0xff;
881 random_add_randomness(buf, sizeof(buf));
882 }
883 #endif /* CONFIG_NO_RANDOM_POOL */
885 if (wpa_s->scan_res_handler) {
886 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
887 struct wpa_scan_results *scan_res);
889 scan_res_handler = wpa_s->scan_res_handler;
890 wpa_s->scan_res_handler = NULL;
891 scan_res_handler(wpa_s, scan_res);
893 wpa_scan_results_free(scan_res);
894 return 0;
895 }
897 if (ap) {
898 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
899 wpa_scan_results_free(scan_res);
900 return 0;
901 }
903 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
904 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
905 wpas_notify_scan_results(wpa_s);
907 wpas_notify_scan_done(wpa_s, 1);
909 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
910 wpa_scan_results_free(scan_res);
911 return 0;
912 }
914 if (wpa_s->disconnected) {
915 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
916 wpa_scan_results_free(scan_res);
917 return 0;
918 }
920 if (bgscan_notify_scan(wpa_s, scan_res) == 1) {
921 wpa_scan_results_free(scan_res);
922 return 0;
923 }
925 wpa_supplicant_rsn_preauth_scan_results(wpa_s, scan_res);
927 selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
929 if (selected) {
930 int skip;
931 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
932 scan_res);
933 wpa_scan_results_free(scan_res);
934 if (skip)
935 return 0;
936 wpa_supplicant_connect(wpa_s, selected, ssid);
937 } else {
938 wpa_scan_results_free(scan_res);
939 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
940 ssid = wpa_supplicant_pick_new_network(wpa_s);
941 if (ssid) {
942 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
943 wpa_supplicant_associate(wpa_s, NULL, ssid);
944 } else {
945 int timeout_sec = 5;
946 int timeout_usec = 0;
947 #ifdef CONFIG_P2P
948 if (wpa_s->p2p_in_provisioning) {
949 /*
950 * Use shorter wait during P2P Provisioning
951 * state to speed up group formation.
952 */
953 timeout_sec = 0;
954 timeout_usec = 250000;
955 }
956 #endif /* CONFIG_P2P */
957 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
958 timeout_usec);
959 }
960 }
961 return 0;
962 }
965 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
966 union wpa_event_data *data)
967 {
968 const char *rn, *rn2;
969 struct wpa_supplicant *ifs;
971 if (_wpa_supplicant_event_scan_results(wpa_s, data) < 0) {
972 /*
973 * If no scan results could be fetched, then no need to
974 * notify those interfaces that did not actually request
975 * this scan.
976 */
977 return;
978 }
980 /*
981 * Check other interfaces to see if they have the same radio-name. If
982 * so, they get updated with this same scan info.
983 */
984 if (!wpa_s->driver->get_radio_name)
985 return;
987 rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
988 if (rn == NULL || rn[0] == '\0')
989 return;
991 wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
992 "sharing same radio (%s) in event_scan_results", rn);
994 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
995 if (ifs == wpa_s || !ifs->driver->get_radio_name)
996 continue;
998 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
999 if (rn2 && os_strcmp(rn, rn2) == 0) {
1000 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1001 "sibling", ifs->ifname);
1002 _wpa_supplicant_event_scan_results(ifs, data);
1003 }
1004 }
1005 }
1007 #endif /* CONFIG_NO_SCAN_PROCESSING */
1010 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1011 union wpa_event_data *data)
1012 {
1013 int l, len, found = 0, wpa_found, rsn_found;
1014 const u8 *p;
1016 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1017 if (data->assoc_info.req_ies)
1018 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1019 data->assoc_info.req_ies_len);
1020 if (data->assoc_info.resp_ies)
1021 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1022 data->assoc_info.resp_ies_len);
1023 if (data->assoc_info.beacon_ies)
1024 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1025 data->assoc_info.beacon_ies,
1026 data->assoc_info.beacon_ies_len);
1027 if (data->assoc_info.freq)
1028 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1029 data->assoc_info.freq);
1031 p = data->assoc_info.req_ies;
1032 l = data->assoc_info.req_ies_len;
1034 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1035 while (p && l >= 2) {
1036 len = p[1] + 2;
1037 if (len > l) {
1038 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1039 p, l);
1040 break;
1041 }
1042 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1043 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1044 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1045 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1046 break;
1047 found = 1;
1048 wpa_find_assoc_pmkid(wpa_s);
1049 break;
1050 }
1051 l -= len;
1052 p += len;
1053 }
1054 if (!found && data->assoc_info.req_ies)
1055 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1057 #ifdef CONFIG_IEEE80211R
1058 #ifdef CONFIG_SME
1059 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1060 u8 bssid[ETH_ALEN];
1061 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1062 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1063 data->assoc_info.resp_ies,
1064 data->assoc_info.resp_ies_len,
1065 bssid) < 0) {
1066 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1067 "Reassociation Response failed");
1068 wpa_supplicant_deauthenticate(
1069 wpa_s, WLAN_REASON_INVALID_IE);
1070 return -1;
1071 }
1072 }
1074 p = data->assoc_info.resp_ies;
1075 l = data->assoc_info.resp_ies_len;
1077 #ifdef CONFIG_WPS_STRICT
1078 if (wpa_s->current_ssid &&
1079 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1080 struct wpabuf *wps;
1081 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1082 if (wps == NULL) {
1083 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1084 "include WPS IE in (Re)Association Response");
1085 return -1;
1086 }
1088 if (wps_validate_assoc_resp(wps) < 0) {
1089 wpabuf_free(wps);
1090 wpa_supplicant_deauthenticate(
1091 wpa_s, WLAN_REASON_INVALID_IE);
1092 return -1;
1093 }
1094 wpabuf_free(wps);
1095 }
1096 #endif /* CONFIG_WPS_STRICT */
1098 /* Go through the IEs and make a copy of the MDIE, if present. */
1099 while (p && l >= 2) {
1100 len = p[1] + 2;
1101 if (len > l) {
1102 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1103 p, l);
1104 break;
1105 }
1106 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1107 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1108 wpa_s->sme.ft_used = 1;
1109 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1110 MOBILITY_DOMAIN_ID_LEN);
1111 break;
1112 }
1113 l -= len;
1114 p += len;
1115 }
1116 #endif /* CONFIG_SME */
1118 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1119 data->assoc_info.resp_ies_len);
1120 #endif /* CONFIG_IEEE80211R */
1122 /* WPA/RSN IE from Beacon/ProbeResp */
1123 p = data->assoc_info.beacon_ies;
1124 l = data->assoc_info.beacon_ies_len;
1126 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1127 */
1128 wpa_found = rsn_found = 0;
1129 while (p && l >= 2) {
1130 len = p[1] + 2;
1131 if (len > l) {
1132 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1133 p, l);
1134 break;
1135 }
1136 if (!wpa_found &&
1137 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1138 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1139 wpa_found = 1;
1140 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1141 }
1143 if (!rsn_found &&
1144 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1145 rsn_found = 1;
1146 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1147 }
1149 l -= len;
1150 p += len;
1151 }
1153 if (!wpa_found && data->assoc_info.beacon_ies)
1154 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1155 if (!rsn_found && data->assoc_info.beacon_ies)
1156 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1157 if (wpa_found || rsn_found)
1158 wpa_s->ap_ies_from_associnfo = 1;
1160 wpa_s->assoc_freq = data->assoc_info.freq;
1162 return 0;
1163 }
1166 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1167 union wpa_event_data *data)
1168 {
1169 u8 bssid[ETH_ALEN];
1170 int ft_completed;
1171 int bssid_changed;
1172 struct wpa_driver_capa capa;
1174 #ifdef CONFIG_AP
1175 if (wpa_s->ap_iface) {
1176 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1177 data->assoc_info.addr,
1178 data->assoc_info.req_ies,
1179 data->assoc_info.req_ies_len);
1180 return;
1181 }
1182 #endif /* CONFIG_AP */
1184 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1185 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1186 return;
1188 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1189 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1190 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1191 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
1192 (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1193 os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
1194 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1195 MACSTR, MAC2STR(bssid));
1196 random_add_randomness(bssid, ETH_ALEN);
1197 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1198 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1199 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1200 if (bssid_changed)
1201 wpas_notify_bssid_changed(wpa_s);
1203 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1204 wpa_clear_keys(wpa_s, bssid);
1205 }
1206 if (wpa_supplicant_select_config(wpa_s) < 0) {
1207 wpa_supplicant_disassociate(
1208 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1209 return;
1210 }
1211 if (wpa_s->current_ssid) {
1212 struct wpa_bss *bss = NULL;
1213 struct wpa_ssid *ssid = wpa_s->current_ssid;
1214 if (ssid->ssid_len > 0)
1215 bss = wpa_bss_get(wpa_s, bssid,
1216 ssid->ssid, ssid->ssid_len);
1217 if (!bss)
1218 bss = wpa_bss_get_bssid(wpa_s, bssid);
1219 if (bss)
1220 wpa_s->current_bss = bss;
1221 }
1222 }
1224 #ifdef CONFIG_SME
1225 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1226 wpa_s->sme.prev_bssid_set = 1;
1227 #endif /* CONFIG_SME */
1229 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1230 if (wpa_s->current_ssid) {
1231 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1232 * initialized before association, but for other modes,
1233 * initialize PC/SC here, if the current configuration needs
1234 * smartcard or SIM/USIM. */
1235 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1236 }
1237 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1238 if (wpa_s->l2)
1239 l2_packet_notify_auth_start(wpa_s->l2);
1241 /*
1242 * Set portEnabled first to FALSE in order to get EAP state machine out
1243 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1244 * state machine may transit to AUTHENTICATING state based on obsolete
1245 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1246 * AUTHENTICATED without ever giving chance to EAP state machine to
1247 * reset the state.
1248 */
1249 if (!ft_completed) {
1250 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1251 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1252 }
1253 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1254 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1255 /* 802.1X::portControl = Auto */
1256 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1257 wpa_s->eapol_received = 0;
1258 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1259 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1260 (wpa_s->current_ssid &&
1261 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1262 wpa_supplicant_cancel_auth_timeout(wpa_s);
1263 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1264 } else if (!ft_completed) {
1265 /* Timeout for receiving the first EAPOL packet */
1266 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1267 }
1268 wpa_supplicant_cancel_scan(wpa_s);
1270 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1271 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1272 /*
1273 * We are done; the driver will take care of RSN 4-way
1274 * handshake.
1275 */
1276 wpa_supplicant_cancel_auth_timeout(wpa_s);
1277 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1278 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1279 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1280 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1281 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1282 /*
1283 * The driver will take care of RSN 4-way handshake, so we need
1284 * to allow EAPOL supplicant to complete its work without
1285 * waiting for WPA supplicant.
1286 */
1287 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1288 } else if (ft_completed) {
1289 /*
1290 * FT protocol completed - make sure EAPOL state machine ends
1291 * up in authenticated.
1292 */
1293 wpa_supplicant_cancel_auth_timeout(wpa_s);
1294 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1295 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1296 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1297 }
1299 if (wpa_s->pending_eapol_rx) {
1300 struct os_time now, age;
1301 os_get_time(&now);
1302 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1303 if (age.sec == 0 && age.usec < 100000 &&
1304 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1305 0) {
1306 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1307 "frame that was received just before "
1308 "association notification");
1309 wpa_supplicant_rx_eapol(
1310 wpa_s, wpa_s->pending_eapol_rx_src,
1311 wpabuf_head(wpa_s->pending_eapol_rx),
1312 wpabuf_len(wpa_s->pending_eapol_rx));
1313 }
1314 wpabuf_free(wpa_s->pending_eapol_rx);
1315 wpa_s->pending_eapol_rx = NULL;
1316 }
1318 #ifdef CONFIG_BGSCAN
1319 if (wpa_s->current_ssid != wpa_s->bgscan_ssid) {
1320 bgscan_deinit(wpa_s);
1321 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
1322 if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
1323 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to "
1324 "initialize bgscan");
1325 /*
1326 * Live without bgscan; it is only used as a
1327 * roaming optimization, so the initial
1328 * connection is not affected.
1329 */
1330 } else
1331 wpa_s->bgscan_ssid = wpa_s->current_ssid;
1332 } else
1333 wpa_s->bgscan_ssid = NULL;
1334 }
1335 #endif /* CONFIG_BGSCAN */
1337 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1338 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1339 wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1340 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1341 /* Set static WEP keys again */
1342 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1343 }
1345 #ifdef CONFIG_IBSS_RSN
1346 if (wpa_s->current_ssid &&
1347 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1348 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1349 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE)
1350 ibss_rsn_connected(wpa_s->ibss_rsn);
1351 #endif /* CONFIG_IBSS_RSN */
1352 }
1355 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1356 u16 reason_code)
1357 {
1358 const u8 *bssid;
1359 #ifdef CONFIG_SME
1360 int authenticating;
1361 u8 prev_pending_bssid[ETH_ALEN];
1363 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1364 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1365 #endif /* CONFIG_SME */
1367 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1368 /*
1369 * At least Host AP driver and a Prism3 card seemed to be
1370 * generating streams of disconnected events when configuring
1371 * IBSS for WPA-None. Ignore them for now.
1372 */
1373 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1374 "IBSS/WPA-None mode");
1375 return;
1376 }
1378 if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1379 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1380 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1381 "pre-shared key may be incorrect");
1382 }
1383 if (!wpa_s->auto_reconnect_disabled ||
1384 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1385 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect enabled: try to "
1386 "reconnect (wps=%d)",
1387 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS);
1388 if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1389 wpa_supplicant_req_scan(wpa_s, 0, 100000);
1390 } else {
1391 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect disabled: do not "
1392 "try to re-connect");
1393 wpa_s->reassociate = 0;
1394 wpa_s->disconnected = 1;
1395 }
1396 bssid = wpa_s->bssid;
1397 if (is_zero_ether_addr(bssid))
1398 bssid = wpa_s->pending_bssid;
1399 wpas_connection_failed(wpa_s, bssid);
1400 wpa_sm_notify_disassoc(wpa_s->wpa);
1401 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1402 " reason=%d",
1403 MAC2STR(bssid), reason_code);
1404 if (wpa_supplicant_dynamic_keys(wpa_s)) {
1405 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1406 wpa_s->keys_cleared = 0;
1407 wpa_clear_keys(wpa_s, wpa_s->bssid);
1408 }
1409 wpa_supplicant_mark_disassoc(wpa_s);
1410 bgscan_deinit(wpa_s);
1411 wpa_s->bgscan_ssid = NULL;
1412 #ifdef CONFIG_SME
1413 if (authenticating &&
1414 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
1415 /*
1416 * mac80211-workaround to force deauth on failed auth cmd,
1417 * requires us to remain in authenticating state to allow the
1418 * second authentication attempt to be continued properly.
1419 */
1420 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1421 "to proceed after disconnection event");
1422 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1423 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1424 }
1425 #endif /* CONFIG_SME */
1426 }
1429 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1430 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1431 void *sock_ctx)
1432 {
1433 struct wpa_supplicant *wpa_s = eloop_ctx;
1435 if (!wpa_s->pending_mic_error_report)
1436 return;
1438 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1439 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1440 wpa_s->pending_mic_error_report = 0;
1441 }
1442 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1445 static void
1446 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1447 union wpa_event_data *data)
1448 {
1449 int pairwise;
1450 struct os_time t;
1452 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1453 pairwise = (data && data->michael_mic_failure.unicast);
1454 os_get_time(&t);
1455 if ((wpa_s->last_michael_mic_error &&
1456 t.sec - wpa_s->last_michael_mic_error <= 60) ||
1457 wpa_s->pending_mic_error_report) {
1458 if (wpa_s->pending_mic_error_report) {
1459 /*
1460 * Send the pending MIC error report immediately since
1461 * we are going to start countermeasures and AP better
1462 * do the same.
1463 */
1464 wpa_sm_key_request(wpa_s->wpa, 1,
1465 wpa_s->pending_mic_error_pairwise);
1466 }
1468 /* Send the new MIC error report immediately since we are going
1469 * to start countermeasures and AP better do the same.
1470 */
1471 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1473 /* initialize countermeasures */
1474 wpa_s->countermeasures = 1;
1475 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1477 /*
1478 * Need to wait for completion of request frame. We do not get
1479 * any callback for the message completion, so just wait a
1480 * short while and hope for the best. */
1481 os_sleep(0, 10000);
1483 wpa_drv_set_countermeasures(wpa_s, 1);
1484 wpa_supplicant_deauthenticate(wpa_s,
1485 WLAN_REASON_MICHAEL_MIC_FAILURE);
1486 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1487 wpa_s, NULL);
1488 eloop_register_timeout(60, 0,
1489 wpa_supplicant_stop_countermeasures,
1490 wpa_s, NULL);
1491 /* TODO: mark the AP rejected for 60 second. STA is
1492 * allowed to associate with another AP.. */
1493 } else {
1494 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1495 if (wpa_s->mic_errors_seen) {
1496 /*
1497 * Reduce the effectiveness of Michael MIC error
1498 * reports as a means for attacking against TKIP if
1499 * more than one MIC failure is noticed with the same
1500 * PTK. We delay the transmission of the reports by a
1501 * random time between 0 and 60 seconds in order to
1502 * force the attacker wait 60 seconds before getting
1503 * the information on whether a frame resulted in a MIC
1504 * failure.
1505 */
1506 u8 rval[4];
1507 int sec;
1509 if (os_get_random(rval, sizeof(rval)) < 0)
1510 sec = os_random() % 60;
1511 else
1512 sec = WPA_GET_BE32(rval) % 60;
1513 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
1514 "report %d seconds", sec);
1515 wpa_s->pending_mic_error_report = 1;
1516 wpa_s->pending_mic_error_pairwise = pairwise;
1517 eloop_cancel_timeout(
1518 wpa_supplicant_delayed_mic_error_report,
1519 wpa_s, NULL);
1520 eloop_register_timeout(
1521 sec, os_random() % 1000000,
1522 wpa_supplicant_delayed_mic_error_report,
1523 wpa_s, NULL);
1524 } else {
1525 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1526 }
1527 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1528 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1529 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1530 }
1531 wpa_s->last_michael_mic_error = t.sec;
1532 wpa_s->mic_errors_seen++;
1533 }
1536 #ifdef CONFIG_TERMINATE_ONLASTIF
1537 static int any_interfaces(struct wpa_supplicant *head)
1538 {
1539 struct wpa_supplicant *wpa_s;
1541 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1542 if (!wpa_s->interface_removed)
1543 return 1;
1544 return 0;
1545 }
1546 #endif /* CONFIG_TERMINATE_ONLASTIF */
1549 static void
1550 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1551 union wpa_event_data *data)
1552 {
1553 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1554 return;
1556 switch (data->interface_status.ievent) {
1557 case EVENT_INTERFACE_ADDED:
1558 if (!wpa_s->interface_removed)
1559 break;
1560 wpa_s->interface_removed = 0;
1561 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
1562 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1563 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
1564 "driver after interface was added");
1565 }
1566 break;
1567 case EVENT_INTERFACE_REMOVED:
1568 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
1569 wpa_s->interface_removed = 1;
1570 wpa_supplicant_mark_disassoc(wpa_s);
1571 l2_packet_deinit(wpa_s->l2);
1572 wpa_s->l2 = NULL;
1573 #ifdef CONFIG_TERMINATE_ONLASTIF
1574 /* check if last interface */
1575 if (!any_interfaces(wpa_s->global->ifaces))
1576 eloop_terminate();
1577 #endif /* CONFIG_TERMINATE_ONLASTIF */
1578 break;
1579 }
1580 }
1583 #ifdef CONFIG_PEERKEY
1584 static void
1585 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1586 union wpa_event_data *data)
1587 {
1588 if (data == NULL)
1589 return;
1590 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1591 }
1592 #endif /* CONFIG_PEERKEY */
1595 #ifdef CONFIG_IEEE80211R
1596 static void
1597 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1598 union wpa_event_data *data)
1599 {
1600 if (data == NULL)
1601 return;
1603 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1604 data->ft_ies.ies_len,
1605 data->ft_ies.ft_action,
1606 data->ft_ies.target_ap,
1607 data->ft_ies.ric_ies,
1608 data->ft_ies.ric_ies_len) < 0) {
1609 /* TODO: prevent MLME/driver from trying to associate? */
1610 }
1611 }
1612 #endif /* CONFIG_IEEE80211R */
1615 #ifdef CONFIG_IBSS_RSN
1616 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1617 union wpa_event_data *data)
1618 {
1619 struct wpa_ssid *ssid;
1620 if (data == NULL)
1621 return;
1622 ssid = wpa_s->current_ssid;
1623 if (ssid == NULL)
1624 return;
1625 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
1626 return;
1628 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1629 }
1630 #endif /* CONFIG_IBSS_RSN */
1633 #ifdef CONFIG_IEEE80211R
1634 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1635 size_t len)
1636 {
1637 const u8 *sta_addr, *target_ap_addr;
1638 u16 status;
1640 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1641 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1642 return; /* only SME case supported for now */
1643 if (len < 1 + 2 * ETH_ALEN + 2)
1644 return;
1645 if (data[0] != 2)
1646 return; /* Only FT Action Response is supported for now */
1647 sta_addr = data + 1;
1648 target_ap_addr = data + 1 + ETH_ALEN;
1649 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1650 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
1651 MACSTR " TargetAP " MACSTR " status %u",
1652 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1654 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1655 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1656 " in FT Action Response", MAC2STR(sta_addr));
1657 return;
1658 }
1660 if (status) {
1661 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
1662 "failure (status code %d)", status);
1663 /* TODO: report error to FT code(?) */
1664 return;
1665 }
1667 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1668 len - (1 + 2 * ETH_ALEN + 2), 1,
1669 target_ap_addr, NULL, 0) < 0)
1670 return;
1672 #ifdef CONFIG_SME
1673 {
1674 struct wpa_bss *bss;
1675 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1676 if (bss)
1677 wpa_s->sme.freq = bss->freq;
1678 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1679 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1680 WLAN_AUTH_FT);
1681 }
1682 #endif /* CONFIG_SME */
1683 }
1684 #endif /* CONFIG_IEEE80211R */
1687 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
1688 struct unprot_deauth *e)
1689 {
1690 #ifdef CONFIG_IEEE80211W
1691 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
1692 "dropped: " MACSTR " -> " MACSTR
1693 " (reason code %u)",
1694 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1695 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1696 #endif /* CONFIG_IEEE80211W */
1697 }
1700 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
1701 struct unprot_disassoc *e)
1702 {
1703 #ifdef CONFIG_IEEE80211W
1704 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
1705 "dropped: " MACSTR " -> " MACSTR
1706 " (reason code %u)",
1707 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1708 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1709 #endif /* CONFIG_IEEE80211W */
1710 }
1713 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1714 union wpa_event_data *data)
1715 {
1716 struct wpa_supplicant *wpa_s = ctx;
1717 u16 reason_code = 0;
1719 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
1720 event != EVENT_INTERFACE_ENABLED &&
1721 event != EVENT_INTERFACE_STATUS) {
1722 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore event %d while interface is "
1723 "disabled", event);
1724 return;
1725 }
1727 wpa_dbg(wpa_s, MSG_DEBUG, "Event %d received on interface %s",
1728 event, wpa_s->ifname);
1730 switch (event) {
1731 case EVENT_AUTH:
1732 sme_event_auth(wpa_s, data);
1733 break;
1734 case EVENT_ASSOC:
1735 wpa_supplicant_event_assoc(wpa_s, data);
1736 break;
1737 case EVENT_DISASSOC:
1738 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
1739 if (data) {
1740 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1741 data->disassoc_info.reason_code);
1742 if (data->disassoc_info.addr)
1743 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
1744 MAC2STR(data->disassoc_info.addr));
1745 }
1746 #ifdef CONFIG_AP
1747 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
1748 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1749 data->disassoc_info.addr);
1750 break;
1751 }
1752 #endif /* CONFIG_AP */
1753 if (data) {
1754 reason_code = data->disassoc_info.reason_code;
1755 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
1756 data->disassoc_info.ie,
1757 data->disassoc_info.ie_len);
1758 #ifdef CONFIG_P2P
1759 wpas_p2p_disassoc_notif(
1760 wpa_s, data->disassoc_info.addr, reason_code,
1761 data->disassoc_info.ie,
1762 data->disassoc_info.ie_len);
1763 #endif /* CONFIG_P2P */
1764 }
1765 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1766 sme_event_disassoc(wpa_s, data);
1767 /* fall through */
1768 case EVENT_DEAUTH:
1769 if (event == EVENT_DEAUTH) {
1770 wpa_dbg(wpa_s, MSG_DEBUG,
1771 "Deauthentication notification");
1772 if (data) {
1773 reason_code = data->deauth_info.reason_code;
1774 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1775 data->deauth_info.reason_code);
1776 if (data->deauth_info.addr) {
1777 wpa_dbg(wpa_s, MSG_DEBUG, " * address "
1778 MACSTR,
1779 MAC2STR(data->deauth_info.
1780 addr));
1781 }
1782 wpa_hexdump(MSG_DEBUG,
1783 "Deauthentication frame IE(s)",
1784 data->deauth_info.ie,
1785 data->deauth_info.ie_len);
1786 #ifdef CONFIG_P2P
1787 wpas_p2p_deauth_notif(
1788 wpa_s, data->deauth_info.addr,
1789 reason_code,
1790 data->deauth_info.ie,
1791 data->deauth_info.ie_len);
1792 #endif /* CONFIG_P2P */
1793 }
1794 }
1795 #ifdef CONFIG_AP
1796 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
1797 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1798 data->deauth_info.addr);
1799 break;
1800 }
1801 #endif /* CONFIG_AP */
1802 wpa_supplicant_event_disassoc(wpa_s, reason_code);
1803 break;
1804 case EVENT_MICHAEL_MIC_FAILURE:
1805 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1806 break;
1807 #ifndef CONFIG_NO_SCAN_PROCESSING
1808 case EVENT_SCAN_RESULTS:
1809 wpa_supplicant_event_scan_results(wpa_s, data);
1810 break;
1811 #endif /* CONFIG_NO_SCAN_PROCESSING */
1812 case EVENT_ASSOCINFO:
1813 wpa_supplicant_event_associnfo(wpa_s, data);
1814 break;
1815 case EVENT_INTERFACE_STATUS:
1816 wpa_supplicant_event_interface_status(wpa_s, data);
1817 break;
1818 case EVENT_PMKID_CANDIDATE:
1819 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1820 break;
1821 #ifdef CONFIG_PEERKEY
1822 case EVENT_STKSTART:
1823 wpa_supplicant_event_stkstart(wpa_s, data);
1824 break;
1825 #endif /* CONFIG_PEERKEY */
1826 #ifdef CONFIG_IEEE80211R
1827 case EVENT_FT_RESPONSE:
1828 wpa_supplicant_event_ft_response(wpa_s, data);
1829 break;
1830 #endif /* CONFIG_IEEE80211R */
1831 #ifdef CONFIG_IBSS_RSN
1832 case EVENT_IBSS_RSN_START:
1833 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1834 break;
1835 #endif /* CONFIG_IBSS_RSN */
1836 case EVENT_ASSOC_REJECT:
1837 if (data->assoc_reject.bssid)
1838 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
1839 "bssid=" MACSTR " status_code=%u",
1840 MAC2STR(data->assoc_reject.bssid),
1841 data->assoc_reject.status_code);
1842 else
1843 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
1844 "status_code=%u",
1845 data->assoc_reject.status_code);
1846 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1847 sme_event_assoc_reject(wpa_s, data);
1848 break;
1849 case EVENT_AUTH_TIMED_OUT:
1850 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1851 sme_event_auth_timed_out(wpa_s, data);
1852 break;
1853 case EVENT_ASSOC_TIMED_OUT:
1854 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1855 sme_event_assoc_timed_out(wpa_s, data);
1856 break;
1857 #ifdef CONFIG_AP
1858 case EVENT_TX_STATUS:
1859 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
1860 " type=%d stype=%d",
1861 MAC2STR(data->tx_status.dst),
1862 data->tx_status.type, data->tx_status.stype);
1863 if (wpa_s->ap_iface == NULL) {
1864 #ifdef CONFIG_P2P
1865 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1866 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
1867 wpas_send_action_tx_status(
1868 wpa_s, data->tx_status.dst,
1869 data->tx_status.data,
1870 data->tx_status.data_len,
1871 data->tx_status.ack ?
1872 P2P_SEND_ACTION_SUCCESS :
1873 P2P_SEND_ACTION_NO_ACK);
1874 #endif /* CONFIG_P2P */
1875 break;
1876 }
1877 #ifdef CONFIG_P2P
1878 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
1879 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
1880 /*
1881 * Catch TX status events for Action frames we sent via group
1882 * interface in GO mode.
1883 */
1884 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1885 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
1886 os_memcmp(wpa_s->parent->pending_action_dst,
1887 data->tx_status.dst, ETH_ALEN) == 0) {
1888 wpas_send_action_tx_status(
1889 wpa_s->parent, data->tx_status.dst,
1890 data->tx_status.data,
1891 data->tx_status.data_len,
1892 data->tx_status.ack ?
1893 P2P_SEND_ACTION_SUCCESS :
1894 P2P_SEND_ACTION_NO_ACK);
1895 break;
1896 }
1897 #endif /* CONFIG_P2P */
1898 switch (data->tx_status.type) {
1899 case WLAN_FC_TYPE_MGMT:
1900 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
1901 data->tx_status.data_len,
1902 data->tx_status.stype,
1903 data->tx_status.ack);
1904 break;
1905 case WLAN_FC_TYPE_DATA:
1906 ap_tx_status(wpa_s, data->tx_status.dst,
1907 data->tx_status.data,
1908 data->tx_status.data_len,
1909 data->tx_status.ack);
1910 break;
1911 }
1912 break;
1913 case EVENT_RX_FROM_UNKNOWN:
1914 if (wpa_s->ap_iface == NULL)
1915 break;
1916 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
1917 data->rx_from_unknown.len);
1918 break;
1919 case EVENT_RX_MGMT:
1920 if (wpa_s->ap_iface == NULL) {
1921 #ifdef CONFIG_P2P
1922 u16 fc, stype;
1923 const struct ieee80211_mgmt *mgmt;
1924 mgmt = (const struct ieee80211_mgmt *)
1925 data->rx_mgmt.frame;
1926 fc = le_to_host16(mgmt->frame_control);
1927 stype = WLAN_FC_GET_STYPE(fc);
1928 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
1929 data->rx_mgmt.frame_len > 24) {
1930 const u8 *src = mgmt->sa;
1931 const u8 *ie = mgmt->u.probe_req.variable;
1932 size_t ie_len = data->rx_mgmt.frame_len -
1933 (mgmt->u.probe_req.variable -
1934 data->rx_mgmt.frame);
1935 wpas_p2p_probe_req_rx(wpa_s, src, ie, ie_len);
1936 break;
1937 }
1938 #endif /* CONFIG_P2P */
1939 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
1940 "management frame in non-AP mode");
1941 break;
1942 }
1943 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
1944 break;
1945 #endif /* CONFIG_AP */
1946 case EVENT_RX_ACTION:
1947 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
1948 " Category=%u DataLen=%d freq=%d MHz",
1949 MAC2STR(data->rx_action.sa),
1950 data->rx_action.category, (int) data->rx_action.len,
1951 data->rx_action.freq);
1952 #ifdef CONFIG_IEEE80211R
1953 if (data->rx_action.category == WLAN_ACTION_FT) {
1954 ft_rx_action(wpa_s, data->rx_action.data,
1955 data->rx_action.len);
1956 break;
1957 }
1958 #endif /* CONFIG_IEEE80211R */
1959 #ifdef CONFIG_IEEE80211W
1960 #ifdef CONFIG_SME
1961 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
1962 sme_sa_query_rx(wpa_s, data->rx_action.sa,
1963 data->rx_action.data,
1964 data->rx_action.len);
1965 break;
1966 }
1967 #endif /* CONFIG_SME */
1968 #endif /* CONFIG_IEEE80211W */
1969 #ifdef CONFIG_P2P
1970 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
1971 data->rx_action.sa,
1972 data->rx_action.bssid,
1973 data->rx_action.category,
1974 data->rx_action.data,
1975 data->rx_action.len, data->rx_action.freq);
1976 #endif /* CONFIG_P2P */
1977 break;
1978 case EVENT_RX_PROBE_REQ:
1979 #ifdef CONFIG_AP
1980 if (wpa_s->ap_iface) {
1981 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
1982 data->rx_probe_req.sa,
1983 data->rx_probe_req.ie,
1984 data->rx_probe_req.ie_len);
1985 break;
1986 }
1987 #endif /* CONFIG_AP */
1988 #ifdef CONFIG_P2P
1989 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
1990 data->rx_probe_req.ie,
1991 data->rx_probe_req.ie_len);
1992 #endif /* CONFIG_P2P */
1993 break;
1994 #ifdef CONFIG_P2P
1995 case EVENT_REMAIN_ON_CHANNEL:
1996 wpas_p2p_remain_on_channel_cb(
1997 wpa_s, data->remain_on_channel.freq,
1998 data->remain_on_channel.duration);
1999 break;
2000 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2001 wpas_p2p_cancel_remain_on_channel_cb(
2002 wpa_s, data->remain_on_channel.freq);
2003 break;
2004 case EVENT_P2P_DEV_FOUND:
2005 wpas_dev_found(wpa_s, data->p2p_dev_found.addr,
2006 data->p2p_dev_found.dev_addr,
2007 data->p2p_dev_found.pri_dev_type,
2008 data->p2p_dev_found.dev_name,
2009 data->p2p_dev_found.config_methods,
2010 data->p2p_dev_found.dev_capab,
2011 data->p2p_dev_found.group_capab);
2012 break;
2013 case EVENT_P2P_GO_NEG_REQ_RX:
2014 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2015 data->p2p_go_neg_req_rx.dev_passwd_id);
2016 break;
2017 case EVENT_P2P_GO_NEG_COMPLETED:
2018 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2019 break;
2020 case EVENT_P2P_PROV_DISC_REQUEST:
2021 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2022 data->p2p_prov_disc_req.config_methods,
2023 data->p2p_prov_disc_req.dev_addr,
2024 data->p2p_prov_disc_req.pri_dev_type,
2025 data->p2p_prov_disc_req.dev_name,
2026 data->p2p_prov_disc_req.supp_config_methods,
2027 data->p2p_prov_disc_req.dev_capab,
2028 data->p2p_prov_disc_req.group_capab);
2029 break;
2030 case EVENT_P2P_PROV_DISC_RESPONSE:
2031 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2032 data->p2p_prov_disc_resp.config_methods);
2033 break;
2034 case EVENT_P2P_SD_REQUEST:
2035 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2036 data->p2p_sd_req.sa,
2037 data->p2p_sd_req.dialog_token,
2038 data->p2p_sd_req.update_indic,
2039 data->p2p_sd_req.tlvs,
2040 data->p2p_sd_req.tlvs_len);
2041 break;
2042 case EVENT_P2P_SD_RESPONSE:
2043 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2044 data->p2p_sd_resp.update_indic,
2045 data->p2p_sd_resp.tlvs,
2046 data->p2p_sd_resp.tlvs_len);
2047 break;
2048 #endif /* CONFIG_P2P */
2049 #ifdef CONFIG_CLIENT_MLME
2050 case EVENT_MLME_RX: {
2051 struct ieee80211_rx_status rx_status;
2052 os_memset(&rx_status, 0, sizeof(rx_status));
2053 rx_status.freq = data->mlme_rx.freq;
2054 rx_status.channel = data->mlme_rx.channel;
2055 rx_status.ssi = data->mlme_rx.ssi;
2056 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
2057 &rx_status);
2058 break;
2059 }
2060 #endif /* CONFIG_CLIENT_MLME */
2061 case EVENT_EAPOL_RX:
2062 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2063 data->eapol_rx.data,
2064 data->eapol_rx.data_len);
2065 break;
2066 case EVENT_SIGNAL_CHANGE:
2067 bgscan_notify_signal_change(
2068 wpa_s, data->signal_change.above_threshold,
2069 data->signal_change.current_signal,
2070 data->signal_change.current_noise,
2071 data->signal_change.current_txrate);
2072 break;
2073 case EVENT_INTERFACE_ENABLED:
2074 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2075 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2076 #ifdef CONFIG_AP
2077 if (!wpa_s->ap_iface) {
2078 wpa_supplicant_set_state(wpa_s,
2079 WPA_DISCONNECTED);
2080 wpa_supplicant_req_scan(wpa_s, 0, 0);
2081 } else
2082 wpa_supplicant_set_state(wpa_s,
2083 WPA_COMPLETED);
2084 #else /* CONFIG_AP */
2085 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2086 wpa_supplicant_req_scan(wpa_s, 0, 0);
2087 #endif /* CONFIG_AP */
2088 }
2089 break;
2090 case EVENT_INTERFACE_DISABLED:
2091 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2092 wpa_supplicant_mark_disassoc(wpa_s);
2093 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2094 break;
2095 case EVENT_CHANNEL_LIST_CHANGED:
2096 if (wpa_s->drv_priv == NULL)
2097 break; /* Ignore event during drv initialization */
2098 #ifdef CONFIG_P2P
2099 wpas_p2p_update_channel_list(wpa_s);
2100 #endif /* CONFIG_P2P */
2101 break;
2102 case EVENT_INTERFACE_UNAVAILABLE:
2103 #ifdef CONFIG_P2P
2104 wpas_p2p_interface_unavailable(wpa_s);
2105 #endif /* CONFIG_P2P */
2106 break;
2107 case EVENT_BEST_CHANNEL:
2108 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2109 "(%d %d %d)",
2110 data->best_chan.freq_24, data->best_chan.freq_5,
2111 data->best_chan.freq_overall);
2112 wpa_s->best_24_freq = data->best_chan.freq_24;
2113 wpa_s->best_5_freq = data->best_chan.freq_5;
2114 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2115 #ifdef CONFIG_P2P
2116 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2117 data->best_chan.freq_5,
2118 data->best_chan.freq_overall);
2119 #endif /* CONFIG_P2P */
2120 break;
2121 case EVENT_UNPROT_DEAUTH:
2122 wpa_supplicant_event_unprot_deauth(wpa_s,
2123 &data->unprot_deauth);
2124 break;
2125 case EVENT_UNPROT_DISASSOC:
2126 wpa_supplicant_event_unprot_disassoc(wpa_s,
2127 &data->unprot_disassoc);
2128 break;
2129 case EVENT_STATION_LOW_ACK:
2130 #ifdef CONFIG_AP
2131 if (wpa_s->ap_iface && data)
2132 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2133 data->low_ack.addr);
2134 #endif /* CONFIG_AP */
2135 break;
2136 default:
2137 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2138 break;
2139 }
2140 }