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 #ifdef CONFIG_IBSS_RSN
117 ibss_rsn_deinit(wpa_s->ibss_rsn);
118 wpa_s->ibss_rsn = NULL;
119 #endif /* CONFIG_IBSS_RSN */
121 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
122 return;
124 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
125 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
126 os_memset(wpa_s->bssid, 0, ETH_ALEN);
127 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
128 wpa_s->current_bss = NULL;
129 wpa_s->assoc_freq = 0;
130 if (bssid_changed)
131 wpas_notify_bssid_changed(wpa_s);
133 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
134 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
135 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
136 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
137 wpa_s->ap_ies_from_associnfo = 0;
138 }
141 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
142 {
143 struct wpa_ie_data ie;
144 int pmksa_set = -1;
145 size_t i;
147 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
148 ie.pmkid == NULL)
149 return;
151 for (i = 0; i < ie.num_pmkid; i++) {
152 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
153 ie.pmkid + i * PMKID_LEN,
154 NULL, NULL, 0);
155 if (pmksa_set == 0) {
156 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
157 break;
158 }
159 }
161 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
162 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
163 }
166 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
167 union wpa_event_data *data)
168 {
169 if (data == NULL) {
170 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
171 "event");
172 return;
173 }
174 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
175 " index=%d preauth=%d",
176 MAC2STR(data->pmkid_candidate.bssid),
177 data->pmkid_candidate.index,
178 data->pmkid_candidate.preauth);
180 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
181 data->pmkid_candidate.index,
182 data->pmkid_candidate.preauth);
183 }
186 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
187 {
188 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
189 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
190 return 0;
192 #ifdef IEEE8021X_EAPOL
193 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
194 wpa_s->current_ssid &&
195 !(wpa_s->current_ssid->eapol_flags &
196 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
197 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
198 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
199 * plaintext or static WEP keys). */
200 return 0;
201 }
202 #endif /* IEEE8021X_EAPOL */
204 return 1;
205 }
208 /**
209 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
210 * @wpa_s: pointer to wpa_supplicant data
211 * @ssid: Configuration data for the network
212 * Returns: 0 on success, -1 on failure
213 *
214 * This function is called when starting authentication with a network that is
215 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
216 */
217 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
218 struct wpa_ssid *ssid)
219 {
220 #ifdef IEEE8021X_EAPOL
221 int aka = 0, sim = 0, type;
223 if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
224 return 0;
226 if (ssid->eap.eap_methods == NULL) {
227 sim = 1;
228 aka = 1;
229 } else {
230 struct eap_method_type *eap = ssid->eap.eap_methods;
231 while (eap->vendor != EAP_VENDOR_IETF ||
232 eap->method != EAP_TYPE_NONE) {
233 if (eap->vendor == EAP_VENDOR_IETF) {
234 if (eap->method == EAP_TYPE_SIM)
235 sim = 1;
236 else if (eap->method == EAP_TYPE_AKA)
237 aka = 1;
238 }
239 eap++;
240 }
241 }
243 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
244 sim = 0;
245 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
246 aka = 0;
248 if (!sim && !aka) {
249 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
250 "use SIM, but neither EAP-SIM nor EAP-AKA are "
251 "enabled");
252 return 0;
253 }
255 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
256 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
257 if (sim && aka)
258 type = SCARD_TRY_BOTH;
259 else if (aka)
260 type = SCARD_USIM_ONLY;
261 else
262 type = SCARD_GSM_SIM_ONLY;
264 wpa_s->scard = scard_init(type);
265 if (wpa_s->scard == NULL) {
266 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
267 "(pcsc-lite)");
268 return -1;
269 }
270 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
271 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
272 #endif /* IEEE8021X_EAPOL */
274 return 0;
275 }
278 #ifndef CONFIG_NO_SCAN_PROCESSING
279 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
280 struct wpa_ssid *ssid)
281 {
282 int i, privacy = 0;
284 if (ssid->mixed_cell)
285 return 1;
287 #ifdef CONFIG_WPS
288 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
289 return 1;
290 #endif /* CONFIG_WPS */
292 for (i = 0; i < NUM_WEP_KEYS; i++) {
293 if (ssid->wep_key_len[i]) {
294 privacy = 1;
295 break;
296 }
297 }
298 #ifdef IEEE8021X_EAPOL
299 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
300 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
301 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
302 privacy = 1;
303 #endif /* IEEE8021X_EAPOL */
305 if (bss->caps & IEEE80211_CAP_PRIVACY)
306 return privacy;
307 return !privacy;
308 }
311 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
312 struct wpa_ssid *ssid,
313 struct wpa_scan_res *bss)
314 {
315 struct wpa_ie_data ie;
316 int proto_match = 0;
317 const u8 *rsn_ie, *wpa_ie;
318 int ret;
319 int wep_ok;
321 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
322 if (ret >= 0)
323 return ret;
325 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
326 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
327 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
328 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
329 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
331 rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
332 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
333 proto_match++;
335 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
336 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
337 "failed");
338 break;
339 }
341 if (wep_ok &&
342 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
343 {
344 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
345 "in RSN IE");
346 return 1;
347 }
349 if (!(ie.proto & ssid->proto)) {
350 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
351 "mismatch");
352 break;
353 }
355 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
356 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
357 "cipher mismatch");
358 break;
359 }
361 if (!(ie.group_cipher & ssid->group_cipher)) {
362 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
363 "cipher mismatch");
364 break;
365 }
367 if (!(ie.key_mgmt & ssid->key_mgmt)) {
368 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
369 "mismatch");
370 break;
371 }
373 #ifdef CONFIG_IEEE80211W
374 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
375 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
376 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
377 "frame protection");
378 break;
379 }
380 #endif /* CONFIG_IEEE80211W */
382 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
383 return 1;
384 }
386 wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
387 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
388 proto_match++;
390 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
391 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
392 "failed");
393 break;
394 }
396 if (wep_ok &&
397 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
398 {
399 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
400 "in WPA IE");
401 return 1;
402 }
404 if (!(ie.proto & ssid->proto)) {
405 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
406 "mismatch");
407 break;
408 }
410 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
411 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
412 "cipher mismatch");
413 break;
414 }
416 if (!(ie.group_cipher & ssid->group_cipher)) {
417 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
418 "cipher mismatch");
419 break;
420 }
422 if (!(ie.key_mgmt & ssid->key_mgmt)) {
423 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
424 "mismatch");
425 break;
426 }
428 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
429 return 1;
430 }
432 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
433 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
434 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
435 return 0;
436 }
438 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
439 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
440 return 1;
441 }
443 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with "
444 "WPA/WPA2");
446 return 0;
447 }
450 static int freq_allowed(int *freqs, int freq)
451 {
452 int i;
454 if (freqs == NULL)
455 return 1;
457 for (i = 0; freqs[i]; i++)
458 if (freqs[i] == freq)
459 return 1;
460 return 0;
461 }
464 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
465 int i, struct wpa_scan_res *bss,
466 struct wpa_ssid *group)
467 {
468 const u8 *ssid_;
469 u8 wpa_ie_len, rsn_ie_len, ssid_len;
470 int wpa;
471 struct wpa_blacklist *e;
472 const u8 *ie;
473 struct wpa_ssid *ssid;
475 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
476 ssid_ = ie ? ie + 2 : (u8 *) "";
477 ssid_len = ie ? ie[1] : 0;
479 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
480 wpa_ie_len = ie ? ie[1] : 0;
482 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
483 rsn_ie_len = ie ? ie[1] : 0;
485 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
486 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
487 i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
488 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
489 wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
491 e = wpa_blacklist_get(wpa_s, bss->bssid);
492 if (e) {
493 int limit = 1;
494 if (wpa_supplicant_enabled_networks(wpa_s->conf) == 1) {
495 /*
496 * When only a single network is enabled, we can
497 * trigger blacklisting on the first failure. This
498 * should not be done with multiple enabled networks to
499 * avoid getting forced to move into a worse ESS on
500 * single error if there are no other BSSes of the
501 * current ESS.
502 */
503 limit = 0;
504 }
505 if (e->count > limit) {
506 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
507 "(count=%d limit=%d)", e->count, limit);
508 return NULL;
509 }
510 }
512 if (ssid_len == 0) {
513 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
514 return NULL;
515 }
517 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
519 for (ssid = group; ssid; ssid = ssid->pnext) {
520 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
522 if (ssid->disabled) {
523 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
524 continue;
525 }
527 #ifdef CONFIG_WPS
528 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
529 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
530 "(WPS)");
531 continue;
532 }
534 if (wpa && ssid->ssid_len == 0 &&
535 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
536 check_ssid = 0;
538 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
539 /* Only allow wildcard SSID match if an AP
540 * advertises active WPS operation that matches
541 * with our mode. */
542 check_ssid = 1;
543 if (ssid->ssid_len == 0 &&
544 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
545 check_ssid = 0;
546 }
547 #endif /* CONFIG_WPS */
549 if (check_ssid &&
550 (ssid_len != ssid->ssid_len ||
551 os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
552 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
553 continue;
554 }
556 if (ssid->bssid_set &&
557 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
558 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
559 continue;
560 }
562 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
563 continue;
565 if (!wpa &&
566 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
567 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
568 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
569 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
570 "not allowed");
571 continue;
572 }
574 if (!wpa && !wpa_supplicant_match_privacy(bss, ssid)) {
575 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
576 "mismatch");
577 continue;
578 }
580 if (!wpa && (bss->caps & IEEE80211_CAP_IBSS)) {
581 wpa_dbg(wpa_s, MSG_DEBUG, " skip - IBSS (adhoc) "
582 "network");
583 continue;
584 }
586 if (!freq_allowed(ssid->freq_list, bss->freq)) {
587 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
588 "allowed");
589 continue;
590 }
592 #ifdef CONFIG_P2P
593 /*
594 * TODO: skip the AP if its P2P IE has Group Formation
595 * bit set in the P2P Group Capability Bitmap and we
596 * are not in Group Formation with that device.
597 */
598 #endif /* CONFIG_P2P */
600 /* Matching configuration found */
601 return ssid;
602 }
604 /* No matching configuration found */
605 return NULL;
606 }
609 static struct wpa_bss *
610 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
611 struct wpa_scan_results *scan_res,
612 struct wpa_ssid *group,
613 struct wpa_ssid **selected_ssid)
614 {
615 size_t i;
617 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
618 group->priority);
620 for (i = 0; i < scan_res->num; i++) {
621 struct wpa_scan_res *bss = scan_res->res[i];
622 const u8 *ie, *ssid;
623 u8 ssid_len;
625 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
626 if (!*selected_ssid)
627 continue;
629 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
630 ssid = ie ? ie + 2 : (u8 *) "";
631 ssid_len = ie ? ie[1] : 0;
633 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
634 " ssid='%s'",
635 MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
636 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
637 }
639 return NULL;
640 }
643 static struct wpa_bss *
644 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
645 struct wpa_scan_results *scan_res,
646 struct wpa_ssid **selected_ssid)
647 {
648 struct wpa_bss *selected = NULL;
649 int prio;
651 while (selected == NULL) {
652 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
653 selected = wpa_supplicant_select_bss(
654 wpa_s, scan_res, wpa_s->conf->pssid[prio],
655 selected_ssid);
656 if (selected)
657 break;
658 }
660 if (selected == NULL && wpa_s->blacklist) {
661 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
662 "blacklist and try again");
663 wpa_blacklist_clear(wpa_s);
664 wpa_s->blacklist_cleared++;
665 } else if (selected == NULL)
666 break;
667 }
669 return selected;
670 }
673 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
674 int timeout_sec, int timeout_usec)
675 {
676 if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
677 /*
678 * No networks are enabled; short-circuit request so
679 * we don't wait timeout seconds before transitioning
680 * to INACTIVE state.
681 */
682 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
683 return;
684 }
685 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
686 }
689 void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
690 struct wpa_bss *selected,
691 struct wpa_ssid *ssid)
692 {
693 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
694 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
695 "PBC session overlap");
696 #ifdef CONFIG_P2P
697 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
698 return;
699 #endif /* CONFIG_P2P */
701 #ifdef CONFIG_WPS
702 wpas_wps_cancel(wpa_s);
703 #endif /* CONFIG_WPS */
704 return;
705 }
707 /*
708 * Do not trigger new association unless the BSSID has changed or if
709 * reassociation is requested. If we are in process of associating with
710 * the selected BSSID, do not trigger new attempt.
711 */
712 if (wpa_s->reassociate ||
713 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
714 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
715 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
716 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
717 0))) {
718 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
719 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
720 return;
721 }
722 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
723 "reassociate: %d selected: "MACSTR " bssid: " MACSTR
724 " pending: " MACSTR " wpa_state: %s",
725 wpa_s->reassociate, MAC2STR(selected->bssid),
726 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
727 wpa_supplicant_state_txt(wpa_s->wpa_state));
728 wpa_supplicant_associate(wpa_s, selected, ssid);
729 } else {
730 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
731 "selected AP");
732 }
733 }
736 static struct wpa_ssid *
737 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
738 {
739 int prio;
740 struct wpa_ssid *ssid;
742 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
743 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
744 {
745 if (ssid->disabled)
746 continue;
747 if (ssid->mode == IEEE80211_MODE_IBSS ||
748 ssid->mode == IEEE80211_MODE_AP)
749 return ssid;
750 }
751 }
752 return NULL;
753 }
756 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
757 * on BSS added and BSS changed events */
758 static void wpa_supplicant_rsn_preauth_scan_results(
759 struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res)
760 {
761 int i;
763 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
764 return;
766 for (i = scan_res->num - 1; i >= 0; i--) {
767 const u8 *ssid, *rsn;
768 struct wpa_scan_res *r;
770 r = scan_res->res[i];
772 ssid = wpa_scan_get_ie(r, WLAN_EID_SSID);
773 if (ssid == NULL)
774 continue;
776 rsn = wpa_scan_get_ie(r, WLAN_EID_RSN);
777 if (rsn == NULL)
778 continue;
780 rsn_preauth_scan_result(wpa_s->wpa, r->bssid, ssid, rsn);
781 }
783 }
786 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
787 struct wpa_bss *selected,
788 struct wpa_ssid *ssid,
789 struct wpa_scan_results *scan_res)
790 {
791 size_t i;
792 struct wpa_scan_res *current_bss = NULL;
793 int min_diff;
795 if (wpa_s->reassociate)
796 return 1; /* explicit request to reassociate */
797 if (wpa_s->wpa_state < WPA_ASSOCIATED)
798 return 1; /* we are not associated; continue */
799 if (wpa_s->current_ssid == NULL)
800 return 1; /* unknown current SSID */
801 if (wpa_s->current_ssid != ssid)
802 return 1; /* different network block */
804 for (i = 0; i < scan_res->num; i++) {
805 struct wpa_scan_res *res = scan_res->res[i];
806 const u8 *ie;
807 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
808 continue;
810 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
811 if (ie == NULL)
812 continue;
813 if (ie[1] != wpa_s->current_ssid->ssid_len ||
814 os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
815 continue;
816 current_bss = res;
817 break;
818 }
820 if (!current_bss)
821 return 1; /* current BSS not seen in scan results */
823 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
824 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
825 MAC2STR(current_bss->bssid), current_bss->level);
826 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
827 MAC2STR(selected->bssid), selected->level);
829 if (wpa_s->current_ssid->bssid_set &&
830 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
831 0) {
832 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
833 "has preferred BSSID");
834 return 1;
835 }
837 min_diff = 2;
838 if (current_bss->level < 0) {
839 if (current_bss->level < -85)
840 min_diff = 1;
841 else if (current_bss->level < -80)
842 min_diff = 2;
843 else if (current_bss->level < -75)
844 min_diff = 3;
845 else if (current_bss->level < -70)
846 min_diff = 4;
847 else
848 min_diff = 5;
849 }
850 if (abs(current_bss->level - selected->level) < min_diff) {
851 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
852 "in signal level");
853 return 0;
854 }
856 return 1;
857 }
859 /* Return < 0 if no scan results could be fetched. */
860 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
861 union wpa_event_data *data)
862 {
863 struct wpa_bss *selected;
864 struct wpa_ssid *ssid = NULL;
865 struct wpa_scan_results *scan_res;
866 int ap = 0;
868 #ifdef CONFIG_AP
869 if (wpa_s->ap_iface)
870 ap = 1;
871 #endif /* CONFIG_AP */
873 wpa_supplicant_notify_scanning(wpa_s, 0);
875 scan_res = wpa_supplicant_get_scan_results(wpa_s,
876 data ? &data->scan_info :
877 NULL, 1);
878 if (scan_res == NULL) {
879 if (wpa_s->conf->ap_scan == 2 || ap)
880 return -1;
881 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
882 "scanning again");
883 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
884 return -1;
885 }
887 #ifndef CONFIG_NO_RANDOM_POOL
888 size_t i, num;
889 num = scan_res->num;
890 if (num > 10)
891 num = 10;
892 for (i = 0; i < num; i++) {
893 u8 buf[5];
894 struct wpa_scan_res *res = scan_res->res[i];
895 buf[0] = res->bssid[5];
896 buf[1] = res->qual & 0xff;
897 buf[2] = res->noise & 0xff;
898 buf[3] = res->level & 0xff;
899 buf[4] = res->tsf & 0xff;
900 random_add_randomness(buf, sizeof(buf));
901 }
902 #endif /* CONFIG_NO_RANDOM_POOL */
904 if (wpa_s->scan_res_handler) {
905 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
906 struct wpa_scan_results *scan_res);
908 scan_res_handler = wpa_s->scan_res_handler;
909 wpa_s->scan_res_handler = NULL;
910 scan_res_handler(wpa_s, scan_res);
912 wpa_scan_results_free(scan_res);
913 return 0;
914 }
916 if (ap) {
917 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
918 #ifdef CONFIG_AP
919 if (wpa_s->ap_iface->scan_cb)
920 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
921 #endif /* CONFIG_AP */
922 wpa_scan_results_free(scan_res);
923 return 0;
924 }
926 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
927 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
928 wpas_notify_scan_results(wpa_s);
930 wpas_notify_scan_done(wpa_s, 1);
932 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
933 wpa_scan_results_free(scan_res);
934 return 0;
935 }
937 if (wpa_s->disconnected) {
938 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
939 wpa_scan_results_free(scan_res);
940 return 0;
941 }
943 if (bgscan_notify_scan(wpa_s, scan_res) == 1) {
944 wpa_scan_results_free(scan_res);
945 return 0;
946 }
948 wpa_supplicant_rsn_preauth_scan_results(wpa_s, scan_res);
950 selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
952 if (selected) {
953 int skip;
954 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
955 scan_res);
956 wpa_scan_results_free(scan_res);
957 if (skip)
958 return 0;
959 wpa_supplicant_connect(wpa_s, selected, ssid);
960 } else {
961 wpa_scan_results_free(scan_res);
962 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
963 ssid = wpa_supplicant_pick_new_network(wpa_s);
964 if (ssid) {
965 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
966 wpa_supplicant_associate(wpa_s, NULL, ssid);
967 } else {
968 int timeout_sec = wpa_s->scan_interval;
969 int timeout_usec = 0;
970 #ifdef CONFIG_P2P
971 if (wpa_s->p2p_in_provisioning) {
972 /*
973 * Use shorter wait during P2P Provisioning
974 * state to speed up group formation.
975 */
976 timeout_sec = 0;
977 timeout_usec = 250000;
978 }
979 #endif /* CONFIG_P2P */
980 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
981 timeout_usec);
982 }
983 }
984 return 0;
985 }
988 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
989 union wpa_event_data *data)
990 {
991 const char *rn, *rn2;
992 struct wpa_supplicant *ifs;
994 if (_wpa_supplicant_event_scan_results(wpa_s, data) < 0) {
995 /*
996 * If no scan results could be fetched, then no need to
997 * notify those interfaces that did not actually request
998 * this scan.
999 */
1000 return;
1001 }
1003 /*
1004 * Check other interfaces to see if they have the same radio-name. If
1005 * so, they get updated with this same scan info.
1006 */
1007 if (!wpa_s->driver->get_radio_name)
1008 return;
1010 rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1011 if (rn == NULL || rn[0] == '\0')
1012 return;
1014 wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1015 "sharing same radio (%s) in event_scan_results", rn);
1017 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1018 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1019 continue;
1021 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1022 if (rn2 && os_strcmp(rn, rn2) == 0) {
1023 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1024 "sibling", ifs->ifname);
1025 _wpa_supplicant_event_scan_results(ifs, data);
1026 }
1027 }
1028 }
1030 #endif /* CONFIG_NO_SCAN_PROCESSING */
1033 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1034 union wpa_event_data *data)
1035 {
1036 int l, len, found = 0, wpa_found, rsn_found;
1037 const u8 *p;
1039 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1040 if (data->assoc_info.req_ies)
1041 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1042 data->assoc_info.req_ies_len);
1043 if (data->assoc_info.resp_ies) {
1044 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1045 data->assoc_info.resp_ies_len);
1046 #ifdef CONFIG_TDLS
1047 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1048 data->assoc_info.resp_ies_len);
1049 #endif /* CONFIG_TDLS */
1050 }
1051 if (data->assoc_info.beacon_ies)
1052 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1053 data->assoc_info.beacon_ies,
1054 data->assoc_info.beacon_ies_len);
1055 if (data->assoc_info.freq)
1056 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1057 data->assoc_info.freq);
1059 p = data->assoc_info.req_ies;
1060 l = data->assoc_info.req_ies_len;
1062 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1063 while (p && l >= 2) {
1064 len = p[1] + 2;
1065 if (len > l) {
1066 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1067 p, l);
1068 break;
1069 }
1070 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1071 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1072 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1073 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1074 break;
1075 found = 1;
1076 wpa_find_assoc_pmkid(wpa_s);
1077 break;
1078 }
1079 l -= len;
1080 p += len;
1081 }
1082 if (!found && data->assoc_info.req_ies)
1083 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1085 #ifdef CONFIG_IEEE80211R
1086 #ifdef CONFIG_SME
1087 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1088 u8 bssid[ETH_ALEN];
1089 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1090 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1091 data->assoc_info.resp_ies,
1092 data->assoc_info.resp_ies_len,
1093 bssid) < 0) {
1094 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1095 "Reassociation Response failed");
1096 wpa_supplicant_deauthenticate(
1097 wpa_s, WLAN_REASON_INVALID_IE);
1098 return -1;
1099 }
1100 }
1102 p = data->assoc_info.resp_ies;
1103 l = data->assoc_info.resp_ies_len;
1105 #ifdef CONFIG_WPS_STRICT
1106 if (p && wpa_s->current_ssid &&
1107 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1108 struct wpabuf *wps;
1109 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1110 if (wps == NULL) {
1111 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1112 "include WPS IE in (Re)Association Response");
1113 return -1;
1114 }
1116 if (wps_validate_assoc_resp(wps) < 0) {
1117 wpabuf_free(wps);
1118 wpa_supplicant_deauthenticate(
1119 wpa_s, WLAN_REASON_INVALID_IE);
1120 return -1;
1121 }
1122 wpabuf_free(wps);
1123 }
1124 #endif /* CONFIG_WPS_STRICT */
1126 /* Go through the IEs and make a copy of the MDIE, if present. */
1127 while (p && l >= 2) {
1128 len = p[1] + 2;
1129 if (len > l) {
1130 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1131 p, l);
1132 break;
1133 }
1134 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1135 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1136 wpa_s->sme.ft_used = 1;
1137 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1138 MOBILITY_DOMAIN_ID_LEN);
1139 break;
1140 }
1141 l -= len;
1142 p += len;
1143 }
1144 #endif /* CONFIG_SME */
1146 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1147 data->assoc_info.resp_ies_len);
1148 #endif /* CONFIG_IEEE80211R */
1150 /* WPA/RSN IE from Beacon/ProbeResp */
1151 p = data->assoc_info.beacon_ies;
1152 l = data->assoc_info.beacon_ies_len;
1154 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1155 */
1156 wpa_found = rsn_found = 0;
1157 while (p && l >= 2) {
1158 len = p[1] + 2;
1159 if (len > l) {
1160 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1161 p, l);
1162 break;
1163 }
1164 if (!wpa_found &&
1165 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1166 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1167 wpa_found = 1;
1168 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1169 }
1171 if (!rsn_found &&
1172 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1173 rsn_found = 1;
1174 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1175 }
1177 l -= len;
1178 p += len;
1179 }
1181 if (!wpa_found && data->assoc_info.beacon_ies)
1182 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1183 if (!rsn_found && data->assoc_info.beacon_ies)
1184 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1185 if (wpa_found || rsn_found)
1186 wpa_s->ap_ies_from_associnfo = 1;
1188 wpa_s->assoc_freq = data->assoc_info.freq;
1190 return 0;
1191 }
1194 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1195 union wpa_event_data *data)
1196 {
1197 u8 bssid[ETH_ALEN];
1198 int ft_completed;
1199 int bssid_changed;
1200 struct wpa_driver_capa capa;
1202 #ifdef CONFIG_AP
1203 if (wpa_s->ap_iface) {
1204 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1205 data->assoc_info.addr,
1206 data->assoc_info.req_ies,
1207 data->assoc_info.req_ies_len,
1208 data->assoc_info.reassoc);
1209 return;
1210 }
1211 #endif /* CONFIG_AP */
1213 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1214 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1215 return;
1217 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1218 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1219 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1220 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
1221 (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1222 os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
1223 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1224 MACSTR, MAC2STR(bssid));
1225 random_add_randomness(bssid, ETH_ALEN);
1226 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1227 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1228 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1229 if (bssid_changed)
1230 wpas_notify_bssid_changed(wpa_s);
1232 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1233 wpa_clear_keys(wpa_s, bssid);
1234 }
1235 if (wpa_supplicant_select_config(wpa_s) < 0) {
1236 wpa_supplicant_disassociate(
1237 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1238 return;
1239 }
1240 if (wpa_s->current_ssid) {
1241 struct wpa_bss *bss = NULL;
1242 struct wpa_ssid *ssid = wpa_s->current_ssid;
1243 if (ssid->ssid_len > 0)
1244 bss = wpa_bss_get(wpa_s, bssid,
1245 ssid->ssid, ssid->ssid_len);
1246 if (!bss)
1247 bss = wpa_bss_get_bssid(wpa_s, bssid);
1248 if (bss)
1249 wpa_s->current_bss = bss;
1250 }
1251 }
1253 #ifdef CONFIG_SME
1254 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1255 wpa_s->sme.prev_bssid_set = 1;
1256 #endif /* CONFIG_SME */
1258 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1259 if (wpa_s->current_ssid) {
1260 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1261 * initialized before association, but for other modes,
1262 * initialize PC/SC here, if the current configuration needs
1263 * smartcard or SIM/USIM. */
1264 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1265 }
1266 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1267 if (wpa_s->l2)
1268 l2_packet_notify_auth_start(wpa_s->l2);
1270 /*
1271 * Set portEnabled first to FALSE in order to get EAP state machine out
1272 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1273 * state machine may transit to AUTHENTICATING state based on obsolete
1274 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1275 * AUTHENTICATED without ever giving chance to EAP state machine to
1276 * reset the state.
1277 */
1278 if (!ft_completed) {
1279 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1280 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1281 }
1282 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1283 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1284 /* 802.1X::portControl = Auto */
1285 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1286 wpa_s->eapol_received = 0;
1287 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1288 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1289 (wpa_s->current_ssid &&
1290 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1291 wpa_supplicant_cancel_auth_timeout(wpa_s);
1292 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1293 } else if (!ft_completed) {
1294 /* Timeout for receiving the first EAPOL packet */
1295 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1296 }
1297 wpa_supplicant_cancel_scan(wpa_s);
1299 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1300 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1301 /*
1302 * We are done; the driver will take care of RSN 4-way
1303 * handshake.
1304 */
1305 wpa_supplicant_cancel_auth_timeout(wpa_s);
1306 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1307 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1308 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1309 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1310 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1311 /*
1312 * The driver will take care of RSN 4-way handshake, so we need
1313 * to allow EAPOL supplicant to complete its work without
1314 * waiting for WPA supplicant.
1315 */
1316 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1317 } else if (ft_completed) {
1318 /*
1319 * FT protocol completed - make sure EAPOL state machine ends
1320 * up in authenticated.
1321 */
1322 wpa_supplicant_cancel_auth_timeout(wpa_s);
1323 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1324 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1325 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1326 }
1328 if (wpa_s->pending_eapol_rx) {
1329 struct os_time now, age;
1330 os_get_time(&now);
1331 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1332 if (age.sec == 0 && age.usec < 100000 &&
1333 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1334 0) {
1335 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1336 "frame that was received just before "
1337 "association notification");
1338 wpa_supplicant_rx_eapol(
1339 wpa_s, wpa_s->pending_eapol_rx_src,
1340 wpabuf_head(wpa_s->pending_eapol_rx),
1341 wpabuf_len(wpa_s->pending_eapol_rx));
1342 }
1343 wpabuf_free(wpa_s->pending_eapol_rx);
1344 wpa_s->pending_eapol_rx = NULL;
1345 }
1347 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1348 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1349 wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1350 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1351 /* Set static WEP keys again */
1352 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1353 }
1355 #ifdef CONFIG_IBSS_RSN
1356 if (wpa_s->current_ssid &&
1357 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1358 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1359 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1360 wpa_s->ibss_rsn == NULL) {
1361 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1362 if (!wpa_s->ibss_rsn) {
1363 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1364 wpa_supplicant_deauthenticate(
1365 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1366 return;
1367 }
1369 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1370 }
1371 #endif /* CONFIG_IBSS_RSN */
1372 }
1375 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1376 u16 reason_code)
1377 {
1378 const u8 *bssid;
1379 int authenticating;
1380 u8 prev_pending_bssid[ETH_ALEN];
1382 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1383 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1385 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1386 /*
1387 * At least Host AP driver and a Prism3 card seemed to be
1388 * generating streams of disconnected events when configuring
1389 * IBSS for WPA-None. Ignore them for now.
1390 */
1391 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1392 "IBSS/WPA-None mode");
1393 return;
1394 }
1396 if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1397 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1398 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1399 "pre-shared key may be incorrect");
1400 }
1401 if (!wpa_s->auto_reconnect_disabled ||
1402 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1403 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect enabled: try to "
1404 "reconnect (wps=%d)",
1405 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS);
1406 if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1407 wpa_supplicant_req_scan(wpa_s, 0, 100000);
1408 } else {
1409 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect disabled: do not "
1410 "try to re-connect");
1411 wpa_s->reassociate = 0;
1412 wpa_s->disconnected = 1;
1413 }
1414 bssid = wpa_s->bssid;
1415 if (is_zero_ether_addr(bssid))
1416 bssid = wpa_s->pending_bssid;
1417 wpas_connection_failed(wpa_s, bssid);
1418 wpa_sm_notify_disassoc(wpa_s->wpa);
1419 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1420 " reason=%d",
1421 MAC2STR(bssid), reason_code);
1422 if (wpa_supplicant_dynamic_keys(wpa_s)) {
1423 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1424 wpa_s->keys_cleared = 0;
1425 wpa_clear_keys(wpa_s, wpa_s->bssid);
1426 }
1427 wpa_supplicant_mark_disassoc(wpa_s);
1429 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1430 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1431 }
1434 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1435 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1436 void *sock_ctx)
1437 {
1438 struct wpa_supplicant *wpa_s = eloop_ctx;
1440 if (!wpa_s->pending_mic_error_report)
1441 return;
1443 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1444 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1445 wpa_s->pending_mic_error_report = 0;
1446 }
1447 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1450 static void
1451 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1452 union wpa_event_data *data)
1453 {
1454 int pairwise;
1455 struct os_time t;
1457 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1458 pairwise = (data && data->michael_mic_failure.unicast);
1459 os_get_time(&t);
1460 if ((wpa_s->last_michael_mic_error &&
1461 t.sec - wpa_s->last_michael_mic_error <= 60) ||
1462 wpa_s->pending_mic_error_report) {
1463 if (wpa_s->pending_mic_error_report) {
1464 /*
1465 * Send the pending MIC error report immediately since
1466 * we are going to start countermeasures and AP better
1467 * do the same.
1468 */
1469 wpa_sm_key_request(wpa_s->wpa, 1,
1470 wpa_s->pending_mic_error_pairwise);
1471 }
1473 /* Send the new MIC error report immediately since we are going
1474 * to start countermeasures and AP better do the same.
1475 */
1476 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1478 /* initialize countermeasures */
1479 wpa_s->countermeasures = 1;
1480 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1482 /*
1483 * Need to wait for completion of request frame. We do not get
1484 * any callback for the message completion, so just wait a
1485 * short while and hope for the best. */
1486 os_sleep(0, 10000);
1488 wpa_drv_set_countermeasures(wpa_s, 1);
1489 wpa_supplicant_deauthenticate(wpa_s,
1490 WLAN_REASON_MICHAEL_MIC_FAILURE);
1491 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1492 wpa_s, NULL);
1493 eloop_register_timeout(60, 0,
1494 wpa_supplicant_stop_countermeasures,
1495 wpa_s, NULL);
1496 /* TODO: mark the AP rejected for 60 second. STA is
1497 * allowed to associate with another AP.. */
1498 } else {
1499 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1500 if (wpa_s->mic_errors_seen) {
1501 /*
1502 * Reduce the effectiveness of Michael MIC error
1503 * reports as a means for attacking against TKIP if
1504 * more than one MIC failure is noticed with the same
1505 * PTK. We delay the transmission of the reports by a
1506 * random time between 0 and 60 seconds in order to
1507 * force the attacker wait 60 seconds before getting
1508 * the information on whether a frame resulted in a MIC
1509 * failure.
1510 */
1511 u8 rval[4];
1512 int sec;
1514 if (os_get_random(rval, sizeof(rval)) < 0)
1515 sec = os_random() % 60;
1516 else
1517 sec = WPA_GET_BE32(rval) % 60;
1518 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
1519 "report %d seconds", sec);
1520 wpa_s->pending_mic_error_report = 1;
1521 wpa_s->pending_mic_error_pairwise = pairwise;
1522 eloop_cancel_timeout(
1523 wpa_supplicant_delayed_mic_error_report,
1524 wpa_s, NULL);
1525 eloop_register_timeout(
1526 sec, os_random() % 1000000,
1527 wpa_supplicant_delayed_mic_error_report,
1528 wpa_s, NULL);
1529 } else {
1530 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1531 }
1532 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1533 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1534 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1535 }
1536 wpa_s->last_michael_mic_error = t.sec;
1537 wpa_s->mic_errors_seen++;
1538 }
1541 #ifdef CONFIG_TERMINATE_ONLASTIF
1542 static int any_interfaces(struct wpa_supplicant *head)
1543 {
1544 struct wpa_supplicant *wpa_s;
1546 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1547 if (!wpa_s->interface_removed)
1548 return 1;
1549 return 0;
1550 }
1551 #endif /* CONFIG_TERMINATE_ONLASTIF */
1554 static void
1555 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1556 union wpa_event_data *data)
1557 {
1558 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1559 return;
1561 switch (data->interface_status.ievent) {
1562 case EVENT_INTERFACE_ADDED:
1563 if (!wpa_s->interface_removed)
1564 break;
1565 wpa_s->interface_removed = 0;
1566 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
1567 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1568 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
1569 "driver after interface was added");
1570 }
1571 break;
1572 case EVENT_INTERFACE_REMOVED:
1573 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
1574 wpa_s->interface_removed = 1;
1575 wpa_supplicant_mark_disassoc(wpa_s);
1576 l2_packet_deinit(wpa_s->l2);
1577 wpa_s->l2 = NULL;
1578 #ifdef CONFIG_IBSS_RSN
1579 ibss_rsn_deinit(wpa_s->ibss_rsn);
1580 wpa_s->ibss_rsn = NULL;
1581 #endif /* CONFIG_IBSS_RSN */
1582 #ifdef CONFIG_TERMINATE_ONLASTIF
1583 /* check if last interface */
1584 if (!any_interfaces(wpa_s->global->ifaces))
1585 eloop_terminate();
1586 #endif /* CONFIG_TERMINATE_ONLASTIF */
1587 break;
1588 }
1589 }
1592 #ifdef CONFIG_PEERKEY
1593 static void
1594 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1595 union wpa_event_data *data)
1596 {
1597 if (data == NULL)
1598 return;
1599 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1600 }
1601 #endif /* CONFIG_PEERKEY */
1604 #ifdef CONFIG_TDLS
1605 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
1606 union wpa_event_data *data)
1607 {
1608 if (data == NULL)
1609 return;
1610 switch (data->tdls.oper) {
1611 case TDLS_REQUEST_SETUP:
1612 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
1613 break;
1614 case TDLS_REQUEST_TEARDOWN:
1615 /* request from driver to add FTIE */
1616 wpa_tdls_recv_teardown_notify(wpa_s->wpa, data->tdls.peer,
1617 data->tdls.reason_code);
1618 break;
1619 }
1620 }
1621 #endif /* CONFIG_TDLS */
1624 #ifdef CONFIG_IEEE80211R
1625 static void
1626 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1627 union wpa_event_data *data)
1628 {
1629 if (data == NULL)
1630 return;
1632 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1633 data->ft_ies.ies_len,
1634 data->ft_ies.ft_action,
1635 data->ft_ies.target_ap,
1636 data->ft_ies.ric_ies,
1637 data->ft_ies.ric_ies_len) < 0) {
1638 /* TODO: prevent MLME/driver from trying to associate? */
1639 }
1640 }
1641 #endif /* CONFIG_IEEE80211R */
1644 #ifdef CONFIG_IBSS_RSN
1645 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1646 union wpa_event_data *data)
1647 {
1648 struct wpa_ssid *ssid;
1649 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1650 return;
1651 if (data == NULL)
1652 return;
1653 ssid = wpa_s->current_ssid;
1654 if (ssid == NULL)
1655 return;
1656 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
1657 return;
1659 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1660 }
1661 #endif /* CONFIG_IBSS_RSN */
1664 #ifdef CONFIG_IEEE80211R
1665 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1666 size_t len)
1667 {
1668 const u8 *sta_addr, *target_ap_addr;
1669 u16 status;
1671 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1672 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1673 return; /* only SME case supported for now */
1674 if (len < 1 + 2 * ETH_ALEN + 2)
1675 return;
1676 if (data[0] != 2)
1677 return; /* Only FT Action Response is supported for now */
1678 sta_addr = data + 1;
1679 target_ap_addr = data + 1 + ETH_ALEN;
1680 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1681 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
1682 MACSTR " TargetAP " MACSTR " status %u",
1683 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1685 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1686 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1687 " in FT Action Response", MAC2STR(sta_addr));
1688 return;
1689 }
1691 if (status) {
1692 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
1693 "failure (status code %d)", status);
1694 /* TODO: report error to FT code(?) */
1695 return;
1696 }
1698 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1699 len - (1 + 2 * ETH_ALEN + 2), 1,
1700 target_ap_addr, NULL, 0) < 0)
1701 return;
1703 #ifdef CONFIG_SME
1704 {
1705 struct wpa_bss *bss;
1706 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1707 if (bss)
1708 wpa_s->sme.freq = bss->freq;
1709 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1710 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1711 WLAN_AUTH_FT);
1712 }
1713 #endif /* CONFIG_SME */
1714 }
1715 #endif /* CONFIG_IEEE80211R */
1718 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
1719 struct unprot_deauth *e)
1720 {
1721 #ifdef CONFIG_IEEE80211W
1722 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
1723 "dropped: " MACSTR " -> " MACSTR
1724 " (reason code %u)",
1725 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1726 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1727 #endif /* CONFIG_IEEE80211W */
1728 }
1731 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
1732 struct unprot_disassoc *e)
1733 {
1734 #ifdef CONFIG_IEEE80211W
1735 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
1736 "dropped: " MACSTR " -> " MACSTR
1737 " (reason code %u)",
1738 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1739 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1740 #endif /* CONFIG_IEEE80211W */
1741 }
1744 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1745 union wpa_event_data *data)
1746 {
1747 struct wpa_supplicant *wpa_s = ctx;
1748 u16 reason_code = 0;
1750 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
1751 event != EVENT_INTERFACE_ENABLED &&
1752 event != EVENT_INTERFACE_STATUS) {
1753 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore event %d while interface is "
1754 "disabled", event);
1755 return;
1756 }
1758 wpa_dbg(wpa_s, MSG_DEBUG, "Event %d received on interface %s",
1759 event, wpa_s->ifname);
1761 switch (event) {
1762 case EVENT_AUTH:
1763 sme_event_auth(wpa_s, data);
1764 break;
1765 case EVENT_ASSOC:
1766 wpa_supplicant_event_assoc(wpa_s, data);
1767 break;
1768 case EVENT_DISASSOC:
1769 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
1770 if (data) {
1771 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1772 data->disassoc_info.reason_code);
1773 if (data->disassoc_info.addr)
1774 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
1775 MAC2STR(data->disassoc_info.addr));
1776 }
1777 #ifdef CONFIG_AP
1778 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
1779 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1780 data->disassoc_info.addr);
1781 break;
1782 }
1783 #endif /* CONFIG_AP */
1784 if (data) {
1785 reason_code = data->disassoc_info.reason_code;
1786 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
1787 data->disassoc_info.ie,
1788 data->disassoc_info.ie_len);
1789 #ifdef CONFIG_P2P
1790 wpas_p2p_disassoc_notif(
1791 wpa_s, data->disassoc_info.addr, reason_code,
1792 data->disassoc_info.ie,
1793 data->disassoc_info.ie_len);
1794 #endif /* CONFIG_P2P */
1795 }
1796 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1797 sme_event_disassoc(wpa_s, data);
1798 /* fall through */
1799 case EVENT_DEAUTH:
1800 if (event == EVENT_DEAUTH) {
1801 wpa_dbg(wpa_s, MSG_DEBUG,
1802 "Deauthentication notification");
1803 if (data) {
1804 reason_code = data->deauth_info.reason_code;
1805 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1806 data->deauth_info.reason_code);
1807 if (data->deauth_info.addr) {
1808 wpa_dbg(wpa_s, MSG_DEBUG, " * address "
1809 MACSTR,
1810 MAC2STR(data->deauth_info.
1811 addr));
1812 }
1813 wpa_hexdump(MSG_DEBUG,
1814 "Deauthentication frame IE(s)",
1815 data->deauth_info.ie,
1816 data->deauth_info.ie_len);
1817 #ifdef CONFIG_P2P
1818 wpas_p2p_deauth_notif(
1819 wpa_s, data->deauth_info.addr,
1820 reason_code,
1821 data->deauth_info.ie,
1822 data->deauth_info.ie_len);
1823 #endif /* CONFIG_P2P */
1824 }
1825 }
1826 #ifdef CONFIG_AP
1827 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
1828 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1829 data->deauth_info.addr);
1830 break;
1831 }
1832 #endif /* CONFIG_AP */
1833 wpa_supplicant_event_disassoc(wpa_s, reason_code);
1834 break;
1835 case EVENT_MICHAEL_MIC_FAILURE:
1836 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1837 break;
1838 #ifndef CONFIG_NO_SCAN_PROCESSING
1839 case EVENT_SCAN_RESULTS:
1840 wpa_supplicant_event_scan_results(wpa_s, data);
1841 break;
1842 #endif /* CONFIG_NO_SCAN_PROCESSING */
1843 case EVENT_ASSOCINFO:
1844 wpa_supplicant_event_associnfo(wpa_s, data);
1845 break;
1846 case EVENT_INTERFACE_STATUS:
1847 wpa_supplicant_event_interface_status(wpa_s, data);
1848 break;
1849 case EVENT_PMKID_CANDIDATE:
1850 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1851 break;
1852 #ifdef CONFIG_PEERKEY
1853 case EVENT_STKSTART:
1854 wpa_supplicant_event_stkstart(wpa_s, data);
1855 break;
1856 #endif /* CONFIG_PEERKEY */
1857 #ifdef CONFIG_TDLS
1858 case EVENT_TDLS:
1859 wpa_supplicant_event_tdls(wpa_s, data);
1860 break;
1861 #endif /* CONFIG_TDLS */
1862 #ifdef CONFIG_IEEE80211R
1863 case EVENT_FT_RESPONSE:
1864 wpa_supplicant_event_ft_response(wpa_s, data);
1865 break;
1866 #endif /* CONFIG_IEEE80211R */
1867 #ifdef CONFIG_IBSS_RSN
1868 case EVENT_IBSS_RSN_START:
1869 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1870 break;
1871 #endif /* CONFIG_IBSS_RSN */
1872 case EVENT_ASSOC_REJECT:
1873 if (data->assoc_reject.bssid)
1874 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
1875 "bssid=" MACSTR " status_code=%u",
1876 MAC2STR(data->assoc_reject.bssid),
1877 data->assoc_reject.status_code);
1878 else
1879 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
1880 "status_code=%u",
1881 data->assoc_reject.status_code);
1882 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1883 sme_event_assoc_reject(wpa_s, data);
1884 break;
1885 case EVENT_AUTH_TIMED_OUT:
1886 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1887 sme_event_auth_timed_out(wpa_s, data);
1888 break;
1889 case EVENT_ASSOC_TIMED_OUT:
1890 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1891 sme_event_assoc_timed_out(wpa_s, data);
1892 break;
1893 #ifdef CONFIG_AP
1894 case EVENT_TX_STATUS:
1895 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
1896 " type=%d stype=%d",
1897 MAC2STR(data->tx_status.dst),
1898 data->tx_status.type, data->tx_status.stype);
1899 if (wpa_s->ap_iface == NULL) {
1900 #ifdef CONFIG_P2P
1901 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1902 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
1903 wpas_send_action_tx_status(
1904 wpa_s, data->tx_status.dst,
1905 data->tx_status.data,
1906 data->tx_status.data_len,
1907 data->tx_status.ack ?
1908 P2P_SEND_ACTION_SUCCESS :
1909 P2P_SEND_ACTION_NO_ACK);
1910 #endif /* CONFIG_P2P */
1911 break;
1912 }
1913 #ifdef CONFIG_P2P
1914 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
1915 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
1916 /*
1917 * Catch TX status events for Action frames we sent via group
1918 * interface in GO mode.
1919 */
1920 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1921 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
1922 os_memcmp(wpa_s->parent->pending_action_dst,
1923 data->tx_status.dst, ETH_ALEN) == 0) {
1924 wpas_send_action_tx_status(
1925 wpa_s->parent, data->tx_status.dst,
1926 data->tx_status.data,
1927 data->tx_status.data_len,
1928 data->tx_status.ack ?
1929 P2P_SEND_ACTION_SUCCESS :
1930 P2P_SEND_ACTION_NO_ACK);
1931 break;
1932 }
1933 #endif /* CONFIG_P2P */
1934 switch (data->tx_status.type) {
1935 case WLAN_FC_TYPE_MGMT:
1936 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
1937 data->tx_status.data_len,
1938 data->tx_status.stype,
1939 data->tx_status.ack);
1940 break;
1941 case WLAN_FC_TYPE_DATA:
1942 ap_tx_status(wpa_s, data->tx_status.dst,
1943 data->tx_status.data,
1944 data->tx_status.data_len,
1945 data->tx_status.ack);
1946 break;
1947 }
1948 break;
1949 case EVENT_RX_FROM_UNKNOWN:
1950 if (wpa_s->ap_iface == NULL)
1951 break;
1952 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
1953 data->rx_from_unknown.len);
1954 break;
1955 case EVENT_RX_MGMT:
1956 if (wpa_s->ap_iface == NULL) {
1957 #ifdef CONFIG_P2P
1958 u16 fc, stype;
1959 const struct ieee80211_mgmt *mgmt;
1960 mgmt = (const struct ieee80211_mgmt *)
1961 data->rx_mgmt.frame;
1962 fc = le_to_host16(mgmt->frame_control);
1963 stype = WLAN_FC_GET_STYPE(fc);
1964 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
1965 data->rx_mgmt.frame_len > 24) {
1966 const u8 *src = mgmt->sa;
1967 const u8 *ie = mgmt->u.probe_req.variable;
1968 size_t ie_len = data->rx_mgmt.frame_len -
1969 (mgmt->u.probe_req.variable -
1970 data->rx_mgmt.frame);
1971 wpas_p2p_probe_req_rx(wpa_s, src, ie, ie_len);
1972 break;
1973 }
1974 #endif /* CONFIG_P2P */
1975 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
1976 "management frame in non-AP mode");
1977 break;
1978 }
1979 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
1980 break;
1981 #endif /* CONFIG_AP */
1982 case EVENT_RX_ACTION:
1983 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
1984 " Category=%u DataLen=%d freq=%d MHz",
1985 MAC2STR(data->rx_action.sa),
1986 data->rx_action.category, (int) data->rx_action.len,
1987 data->rx_action.freq);
1988 #ifdef CONFIG_IEEE80211R
1989 if (data->rx_action.category == WLAN_ACTION_FT) {
1990 ft_rx_action(wpa_s, data->rx_action.data,
1991 data->rx_action.len);
1992 break;
1993 }
1994 #endif /* CONFIG_IEEE80211R */
1995 #ifdef CONFIG_IEEE80211W
1996 #ifdef CONFIG_SME
1997 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
1998 sme_sa_query_rx(wpa_s, data->rx_action.sa,
1999 data->rx_action.data,
2000 data->rx_action.len);
2001 break;
2002 }
2003 #endif /* CONFIG_SME */
2004 #endif /* CONFIG_IEEE80211W */
2005 #ifdef CONFIG_P2P
2006 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2007 data->rx_action.sa,
2008 data->rx_action.bssid,
2009 data->rx_action.category,
2010 data->rx_action.data,
2011 data->rx_action.len, data->rx_action.freq);
2012 #endif /* CONFIG_P2P */
2013 break;
2014 case EVENT_RX_PROBE_REQ:
2015 if (data->rx_probe_req.sa == NULL ||
2016 data->rx_probe_req.ie == NULL)
2017 break;
2018 #ifdef CONFIG_AP
2019 if (wpa_s->ap_iface) {
2020 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2021 data->rx_probe_req.sa,
2022 data->rx_probe_req.ie,
2023 data->rx_probe_req.ie_len);
2024 break;
2025 }
2026 #endif /* CONFIG_AP */
2027 #ifdef CONFIG_P2P
2028 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2029 data->rx_probe_req.ie,
2030 data->rx_probe_req.ie_len);
2031 #endif /* CONFIG_P2P */
2032 break;
2033 #ifdef CONFIG_P2P
2034 case EVENT_REMAIN_ON_CHANNEL:
2035 wpas_p2p_remain_on_channel_cb(
2036 wpa_s, data->remain_on_channel.freq,
2037 data->remain_on_channel.duration);
2038 break;
2039 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2040 wpas_p2p_cancel_remain_on_channel_cb(
2041 wpa_s, data->remain_on_channel.freq);
2042 break;
2043 case EVENT_P2P_DEV_FOUND: {
2044 struct p2p_peer_info peer_info;
2046 os_memset(&peer_info, 0, sizeof(peer_info));
2047 if (data->p2p_dev_found.dev_addr)
2048 os_memcpy(peer_info.p2p_device_addr,
2049 data->p2p_dev_found.dev_addr, ETH_ALEN);
2050 if (data->p2p_dev_found.pri_dev_type)
2051 os_memcpy(peer_info.pri_dev_type,
2052 data->p2p_dev_found.pri_dev_type,
2053 sizeof(peer_info.pri_dev_type));
2054 if (data->p2p_dev_found.dev_name)
2055 os_strlcpy(peer_info.device_name,
2056 data->p2p_dev_found.dev_name,
2057 sizeof(peer_info.device_name));
2058 peer_info.config_methods = data->p2p_dev_found.config_methods;
2059 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2060 peer_info.group_capab = data->p2p_dev_found.group_capab;
2062 /*
2063 * FIX: new_device=1 is not necessarily correct. We should
2064 * maintain a P2P peer database in wpa_supplicant and update
2065 * this information based on whether the peer is truly new.
2066 */
2067 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2068 break;
2069 }
2070 case EVENT_P2P_GO_NEG_REQ_RX:
2071 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2072 data->p2p_go_neg_req_rx.dev_passwd_id);
2073 break;
2074 case EVENT_P2P_GO_NEG_COMPLETED:
2075 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2076 break;
2077 case EVENT_P2P_PROV_DISC_REQUEST:
2078 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2079 data->p2p_prov_disc_req.config_methods,
2080 data->p2p_prov_disc_req.dev_addr,
2081 data->p2p_prov_disc_req.pri_dev_type,
2082 data->p2p_prov_disc_req.dev_name,
2083 data->p2p_prov_disc_req.supp_config_methods,
2084 data->p2p_prov_disc_req.dev_capab,
2085 data->p2p_prov_disc_req.group_capab);
2086 break;
2087 case EVENT_P2P_PROV_DISC_RESPONSE:
2088 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2089 data->p2p_prov_disc_resp.config_methods);
2090 break;
2091 case EVENT_P2P_SD_REQUEST:
2092 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2093 data->p2p_sd_req.sa,
2094 data->p2p_sd_req.dialog_token,
2095 data->p2p_sd_req.update_indic,
2096 data->p2p_sd_req.tlvs,
2097 data->p2p_sd_req.tlvs_len);
2098 break;
2099 case EVENT_P2P_SD_RESPONSE:
2100 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2101 data->p2p_sd_resp.update_indic,
2102 data->p2p_sd_resp.tlvs,
2103 data->p2p_sd_resp.tlvs_len);
2104 break;
2105 #endif /* CONFIG_P2P */
2106 #ifdef CONFIG_CLIENT_MLME
2107 case EVENT_MLME_RX: {
2108 struct ieee80211_rx_status rx_status;
2109 os_memset(&rx_status, 0, sizeof(rx_status));
2110 rx_status.freq = data->mlme_rx.freq;
2111 rx_status.channel = data->mlme_rx.channel;
2112 rx_status.ssi = data->mlme_rx.ssi;
2113 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
2114 &rx_status);
2115 break;
2116 }
2117 #endif /* CONFIG_CLIENT_MLME */
2118 case EVENT_EAPOL_RX:
2119 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2120 data->eapol_rx.data,
2121 data->eapol_rx.data_len);
2122 break;
2123 case EVENT_SIGNAL_CHANGE:
2124 bgscan_notify_signal_change(
2125 wpa_s, data->signal_change.above_threshold,
2126 data->signal_change.current_signal,
2127 data->signal_change.current_noise,
2128 data->signal_change.current_txrate);
2129 break;
2130 case EVENT_INTERFACE_ENABLED:
2131 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2132 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2133 #ifdef CONFIG_AP
2134 if (!wpa_s->ap_iface) {
2135 wpa_supplicant_set_state(wpa_s,
2136 WPA_DISCONNECTED);
2137 wpa_supplicant_req_scan(wpa_s, 0, 0);
2138 } else
2139 wpa_supplicant_set_state(wpa_s,
2140 WPA_COMPLETED);
2141 #else /* CONFIG_AP */
2142 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2143 wpa_supplicant_req_scan(wpa_s, 0, 0);
2144 #endif /* CONFIG_AP */
2145 }
2146 break;
2147 case EVENT_INTERFACE_DISABLED:
2148 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2149 wpa_supplicant_mark_disassoc(wpa_s);
2150 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2151 break;
2152 case EVENT_CHANNEL_LIST_CHANGED:
2153 if (wpa_s->drv_priv == NULL)
2154 break; /* Ignore event during drv initialization */
2155 #ifdef CONFIG_P2P
2156 wpas_p2p_update_channel_list(wpa_s);
2157 #endif /* CONFIG_P2P */
2158 break;
2159 case EVENT_INTERFACE_UNAVAILABLE:
2160 #ifdef CONFIG_P2P
2161 wpas_p2p_interface_unavailable(wpa_s);
2162 #endif /* CONFIG_P2P */
2163 break;
2164 case EVENT_BEST_CHANNEL:
2165 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2166 "(%d %d %d)",
2167 data->best_chan.freq_24, data->best_chan.freq_5,
2168 data->best_chan.freq_overall);
2169 wpa_s->best_24_freq = data->best_chan.freq_24;
2170 wpa_s->best_5_freq = data->best_chan.freq_5;
2171 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2172 #ifdef CONFIG_P2P
2173 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2174 data->best_chan.freq_5,
2175 data->best_chan.freq_overall);
2176 #endif /* CONFIG_P2P */
2177 break;
2178 case EVENT_UNPROT_DEAUTH:
2179 wpa_supplicant_event_unprot_deauth(wpa_s,
2180 &data->unprot_deauth);
2181 break;
2182 case EVENT_UNPROT_DISASSOC:
2183 wpa_supplicant_event_unprot_disassoc(wpa_s,
2184 &data->unprot_disassoc);
2185 break;
2186 case EVENT_STATION_LOW_ACK:
2187 #ifdef CONFIG_AP
2188 if (wpa_s->ap_iface && data)
2189 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2190 data->low_ack.addr);
2191 #endif /* CONFIG_AP */
2192 break;
2193 case EVENT_IBSS_PEER_LOST:
2194 #ifdef CONFIG_IBSS_RSN
2195 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2196 #endif /* CONFIG_IBSS_RSN */
2197 break;
2198 default:
2199 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2200 break;
2201 }
2202 }