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 "gas_query.h"
42 #include "p2p_supplicant.h"
43 #include "bgscan.h"
44 #include "ap.h"
45 #include "bss.h"
46 #include "scan.h"
47 #include "offchannel.h"
50 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
51 {
52 struct wpa_ssid *ssid, *old_ssid;
54 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
55 return 0;
57 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
58 "information");
59 ssid = wpa_supplicant_get_ssid(wpa_s);
60 if (ssid == NULL) {
61 wpa_msg(wpa_s, MSG_INFO,
62 "No network configuration found for the current AP");
63 return -1;
64 }
66 if (ssid->disabled) {
67 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
68 return -1;
69 }
71 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
72 "current AP");
73 if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
74 WPA_KEY_MGMT_WPA_NONE |
75 WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
76 WPA_KEY_MGMT_PSK_SHA256 |
77 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
78 u8 wpa_ie[80];
79 size_t wpa_ie_len = sizeof(wpa_ie);
80 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
81 wpa_ie, &wpa_ie_len);
82 } else {
83 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
84 }
86 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
87 eapol_sm_invalidate_cached_session(wpa_s->eapol);
88 old_ssid = wpa_s->current_ssid;
89 wpa_s->current_ssid = ssid;
90 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
91 wpa_supplicant_initiate_eapol(wpa_s);
92 if (old_ssid != wpa_s->current_ssid)
93 wpas_notify_network_changed(wpa_s);
95 return 0;
96 }
99 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, 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 #ifdef CONFIG_AP
122 wpa_supplicant_ap_deinit(wpa_s);
123 #endif /* CONFIG_AP */
125 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
126 return;
128 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
129 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
130 os_memset(wpa_s->bssid, 0, ETH_ALEN);
131 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
132 wpa_s->current_bss = NULL;
133 wpa_s->assoc_freq = 0;
134 #ifdef CONFIG_IEEE80211R
135 #ifdef CONFIG_SME
136 if (wpa_s->sme.ft_ies)
137 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
138 #endif /* CONFIG_SME */
139 #endif /* CONFIG_IEEE80211R */
141 if (bssid_changed)
142 wpas_notify_bssid_changed(wpa_s);
144 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
145 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
146 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
147 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
148 wpa_s->ap_ies_from_associnfo = 0;
149 }
152 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
153 {
154 struct wpa_ie_data ie;
155 int pmksa_set = -1;
156 size_t i;
158 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
159 ie.pmkid == NULL)
160 return;
162 for (i = 0; i < ie.num_pmkid; i++) {
163 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
164 ie.pmkid + i * PMKID_LEN,
165 NULL, NULL, 0);
166 if (pmksa_set == 0) {
167 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
168 break;
169 }
170 }
172 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
173 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
174 }
177 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
178 union wpa_event_data *data)
179 {
180 if (data == NULL) {
181 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
182 "event");
183 return;
184 }
185 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
186 " index=%d preauth=%d",
187 MAC2STR(data->pmkid_candidate.bssid),
188 data->pmkid_candidate.index,
189 data->pmkid_candidate.preauth);
191 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
192 data->pmkid_candidate.index,
193 data->pmkid_candidate.preauth);
194 }
197 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
198 {
199 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
200 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
201 return 0;
203 #ifdef IEEE8021X_EAPOL
204 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
205 wpa_s->current_ssid &&
206 !(wpa_s->current_ssid->eapol_flags &
207 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
208 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
209 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
210 * plaintext or static WEP keys). */
211 return 0;
212 }
213 #endif /* IEEE8021X_EAPOL */
215 return 1;
216 }
219 /**
220 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
221 * @wpa_s: pointer to wpa_supplicant data
222 * @ssid: Configuration data for the network
223 * Returns: 0 on success, -1 on failure
224 *
225 * This function is called when starting authentication with a network that is
226 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
227 */
228 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
229 struct wpa_ssid *ssid)
230 {
231 #ifdef IEEE8021X_EAPOL
232 #ifdef PCSC_FUNCS
233 int aka = 0, sim = 0, type;
235 if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
236 return 0;
238 if (ssid->eap.eap_methods == NULL) {
239 sim = 1;
240 aka = 1;
241 } else {
242 struct eap_method_type *eap = ssid->eap.eap_methods;
243 while (eap->vendor != EAP_VENDOR_IETF ||
244 eap->method != EAP_TYPE_NONE) {
245 if (eap->vendor == EAP_VENDOR_IETF) {
246 if (eap->method == EAP_TYPE_SIM)
247 sim = 1;
248 else if (eap->method == EAP_TYPE_AKA)
249 aka = 1;
250 }
251 eap++;
252 }
253 }
255 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
256 sim = 0;
257 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
258 aka = 0;
260 if (!sim && !aka) {
261 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
262 "use SIM, but neither EAP-SIM nor EAP-AKA are "
263 "enabled");
264 return 0;
265 }
267 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
268 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
269 if (sim && aka)
270 type = SCARD_TRY_BOTH;
271 else if (aka)
272 type = SCARD_USIM_ONLY;
273 else
274 type = SCARD_GSM_SIM_ONLY;
276 wpa_s->scard = scard_init(type);
277 if (wpa_s->scard == NULL) {
278 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
279 "(pcsc-lite)");
280 return -1;
281 }
282 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
283 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
284 #endif /* PCSC_FUNCS */
285 #endif /* IEEE8021X_EAPOL */
287 return 0;
288 }
291 #ifndef CONFIG_NO_SCAN_PROCESSING
292 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
293 struct wpa_ssid *ssid)
294 {
295 int i, privacy = 0;
297 if (ssid->mixed_cell)
298 return 1;
300 #ifdef CONFIG_WPS
301 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
302 return 1;
303 #endif /* CONFIG_WPS */
305 for (i = 0; i < NUM_WEP_KEYS; i++) {
306 if (ssid->wep_key_len[i]) {
307 privacy = 1;
308 break;
309 }
310 }
311 #ifdef IEEE8021X_EAPOL
312 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
313 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
314 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
315 privacy = 1;
316 #endif /* IEEE8021X_EAPOL */
318 if (wpa_key_mgmt_wpa(ssid->key_mgmt))
319 privacy = 1;
321 if (bss->caps & IEEE80211_CAP_PRIVACY)
322 return privacy;
323 return !privacy;
324 }
327 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
328 struct wpa_ssid *ssid,
329 struct wpa_scan_res *bss)
330 {
331 struct wpa_ie_data ie;
332 int proto_match = 0;
333 const u8 *rsn_ie, *wpa_ie;
334 int ret;
335 int wep_ok;
337 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
338 if (ret >= 0)
339 return ret;
341 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
342 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
343 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
344 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
345 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
347 rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
348 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
349 proto_match++;
351 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
352 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
353 "failed");
354 break;
355 }
357 if (wep_ok &&
358 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
359 {
360 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
361 "in RSN IE");
362 return 1;
363 }
365 if (!(ie.proto & ssid->proto)) {
366 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
367 "mismatch");
368 break;
369 }
371 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
372 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
373 "cipher mismatch");
374 break;
375 }
377 if (!(ie.group_cipher & ssid->group_cipher)) {
378 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
379 "cipher mismatch");
380 break;
381 }
383 if (!(ie.key_mgmt & ssid->key_mgmt)) {
384 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
385 "mismatch");
386 break;
387 }
389 #ifdef CONFIG_IEEE80211W
390 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
391 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
392 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
393 "frame protection");
394 break;
395 }
396 #endif /* CONFIG_IEEE80211W */
398 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
399 return 1;
400 }
402 wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
403 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
404 proto_match++;
406 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
407 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
408 "failed");
409 break;
410 }
412 if (wep_ok &&
413 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
414 {
415 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
416 "in WPA IE");
417 return 1;
418 }
420 if (!(ie.proto & ssid->proto)) {
421 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
422 "mismatch");
423 break;
424 }
426 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
427 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
428 "cipher mismatch");
429 break;
430 }
432 if (!(ie.group_cipher & ssid->group_cipher)) {
433 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
434 "cipher mismatch");
435 break;
436 }
438 if (!(ie.key_mgmt & ssid->key_mgmt)) {
439 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
440 "mismatch");
441 break;
442 }
444 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
445 return 1;
446 }
448 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
449 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
450 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
451 return 0;
452 }
454 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
455 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
456 return 1;
457 }
459 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with "
460 "WPA/WPA2");
462 return 0;
463 }
466 static int freq_allowed(int *freqs, int freq)
467 {
468 int i;
470 if (freqs == NULL)
471 return 1;
473 for (i = 0; freqs[i]; i++)
474 if (freqs[i] == freq)
475 return 1;
476 return 0;
477 }
480 static int ht_supported(const struct hostapd_hw_modes *mode)
481 {
482 if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
483 /*
484 * The driver did not indicate whether it supports HT. Assume
485 * it does to avoid connection issues.
486 */
487 return 1;
488 }
490 /*
491 * IEEE Std 802.11n-2009 20.1.1:
492 * An HT non-AP STA shall support all EQM rates for one spatial stream.
493 */
494 return mode->mcs_set[0] == 0xff;
495 }
498 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_scan_res *bss)
499 {
500 const struct hostapd_hw_modes *mode = NULL, *modes;
501 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
502 const u8 *rate_ie;
503 int i, j, k;
505 if (bss->freq == 0)
506 return 1; /* Cannot do matching without knowing band */
508 modes = wpa_s->hw.modes;
509 if (modes == NULL) {
510 /*
511 * The driver does not provide any additional information
512 * about the utilized hardware, so allow the connection attempt
513 * to continue.
514 */
515 return 1;
516 }
518 for (i = 0; i < wpa_s->hw.num_modes; i++) {
519 for (j = 0; j < modes[i].num_channels; j++) {
520 int freq = modes[i].channels[j].freq;
521 if (freq == bss->freq) {
522 if (mode &&
523 mode->mode == HOSTAPD_MODE_IEEE80211G)
524 break; /* do not allow 802.11b replace
525 * 802.11g */
526 mode = &modes[i];
527 break;
528 }
529 }
530 }
532 if (mode == NULL)
533 return 0;
535 for (i = 0; i < (int) sizeof(scan_ie); i++) {
536 rate_ie = wpa_scan_get_ie(bss, scan_ie[i]);
537 if (rate_ie == NULL)
538 continue;
540 for (j = 2; j < rate_ie[1] + 2; j++) {
541 int flagged = !!(rate_ie[j] & 0x80);
542 int r = (rate_ie[j] & 0x7f) * 5;
544 /*
545 * IEEE Std 802.11n-2009 7.3.2.2:
546 * The new BSS Membership selector value is encoded
547 * like a legacy basic rate, but it is not a rate and
548 * only indicates if the BSS members are required to
549 * support the mandatory features of Clause 20 [HT PHY]
550 * in order to join the BSS.
551 */
552 if (flagged && ((rate_ie[j] & 0x7f) ==
553 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
554 if (!ht_supported(mode)) {
555 wpa_dbg(wpa_s, MSG_DEBUG,
556 " hardware does not support "
557 "HT PHY");
558 return 0;
559 }
560 continue;
561 }
563 if (!flagged)
564 continue;
566 /* check for legacy basic rates */
567 for (k = 0; k < mode->num_rates; k++) {
568 if (mode->rates[k] == r)
569 break;
570 }
571 if (k == mode->num_rates) {
572 /*
573 * IEEE Std 802.11-2007 7.3.2.2 demands that in
574 * order to join a BSS all required rates
575 * have to be supported by the hardware.
576 */
577 wpa_dbg(wpa_s, MSG_DEBUG, " hardware does "
578 "not support required rate %d.%d Mbps",
579 r / 10, r % 10);
580 return 0;
581 }
582 }
583 }
585 return 1;
586 }
589 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
590 int i, struct wpa_scan_res *bss,
591 struct wpa_ssid *group)
592 {
593 const u8 *ssid_;
594 u8 wpa_ie_len, rsn_ie_len, ssid_len;
595 int wpa;
596 struct wpa_blacklist *e;
597 const u8 *ie;
598 struct wpa_ssid *ssid;
600 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
601 ssid_ = ie ? ie + 2 : (u8 *) "";
602 ssid_len = ie ? ie[1] : 0;
604 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
605 wpa_ie_len = ie ? ie[1] : 0;
607 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
608 rsn_ie_len = ie ? ie[1] : 0;
610 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
611 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
612 i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
613 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
614 wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
616 e = wpa_blacklist_get(wpa_s, bss->bssid);
617 if (e) {
618 int limit = 1;
619 if (wpa_supplicant_enabled_networks(wpa_s->conf) == 1) {
620 /*
621 * When only a single network is enabled, we can
622 * trigger blacklisting on the first failure. This
623 * should not be done with multiple enabled networks to
624 * avoid getting forced to move into a worse ESS on
625 * single error if there are no other BSSes of the
626 * current ESS.
627 */
628 limit = 0;
629 }
630 if (e->count > limit) {
631 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
632 "(count=%d limit=%d)", e->count, limit);
633 return NULL;
634 }
635 }
637 if (ssid_len == 0) {
638 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
639 return NULL;
640 }
642 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
644 for (ssid = group; ssid; ssid = ssid->pnext) {
645 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
647 if (ssid->disabled) {
648 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
649 continue;
650 }
652 #ifdef CONFIG_WPS
653 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
654 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
655 "(WPS)");
656 continue;
657 }
659 if (wpa && ssid->ssid_len == 0 &&
660 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
661 check_ssid = 0;
663 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
664 /* Only allow wildcard SSID match if an AP
665 * advertises active WPS operation that matches
666 * with our mode. */
667 check_ssid = 1;
668 if (ssid->ssid_len == 0 &&
669 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
670 check_ssid = 0;
671 }
672 #endif /* CONFIG_WPS */
674 if (ssid->bssid_set && ssid->ssid_len == 0 &&
675 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
676 check_ssid = 0;
678 if (check_ssid &&
679 (ssid_len != ssid->ssid_len ||
680 os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
681 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
682 continue;
683 }
685 if (ssid->bssid_set &&
686 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
687 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
688 continue;
689 }
691 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
692 continue;
694 if (!wpa &&
695 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
696 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
697 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
698 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
699 "not allowed");
700 continue;
701 }
703 if (!wpa_supplicant_match_privacy(bss, ssid)) {
704 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
705 "mismatch");
706 continue;
707 }
709 if (bss->caps & IEEE80211_CAP_IBSS) {
710 wpa_dbg(wpa_s, MSG_DEBUG, " skip - IBSS (adhoc) "
711 "network");
712 continue;
713 }
715 if (!freq_allowed(ssid->freq_list, bss->freq)) {
716 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
717 "allowed");
718 continue;
719 }
721 if (!rate_match(wpa_s, bss)) {
722 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do "
723 "not match");
724 continue;
725 }
727 #ifdef CONFIG_P2P
728 /*
729 * TODO: skip the AP if its P2P IE has Group Formation
730 * bit set in the P2P Group Capability Bitmap and we
731 * are not in Group Formation with that device.
732 */
733 #endif /* CONFIG_P2P */
735 /* Matching configuration found */
736 return ssid;
737 }
739 /* No matching configuration found */
740 return NULL;
741 }
744 static struct wpa_bss *
745 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
746 struct wpa_scan_results *scan_res,
747 struct wpa_ssid *group,
748 struct wpa_ssid **selected_ssid)
749 {
750 size_t i;
752 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
753 group->priority);
755 for (i = 0; i < scan_res->num; i++) {
756 struct wpa_scan_res *bss = scan_res->res[i];
757 const u8 *ie, *ssid;
758 u8 ssid_len;
760 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
761 if (!*selected_ssid)
762 continue;
764 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
765 ssid = ie ? ie + 2 : (u8 *) "";
766 ssid_len = ie ? ie[1] : 0;
768 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
769 " ssid='%s'",
770 MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
771 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
772 }
774 return NULL;
775 }
778 static struct wpa_bss *
779 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
780 struct wpa_scan_results *scan_res,
781 struct wpa_ssid **selected_ssid)
782 {
783 struct wpa_bss *selected = NULL;
784 int prio;
786 while (selected == NULL) {
787 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
788 selected = wpa_supplicant_select_bss(
789 wpa_s, scan_res, wpa_s->conf->pssid[prio],
790 selected_ssid);
791 if (selected)
792 break;
793 }
795 if (selected == NULL && wpa_s->blacklist) {
796 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
797 "blacklist and try again");
798 wpa_blacklist_clear(wpa_s);
799 wpa_s->blacklist_cleared++;
800 } else if (selected == NULL)
801 break;
802 }
804 return selected;
805 }
808 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
809 int timeout_sec, int timeout_usec)
810 {
811 if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
812 /*
813 * No networks are enabled; short-circuit request so
814 * we don't wait timeout seconds before transitioning
815 * to INACTIVE state.
816 */
817 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
818 return;
819 }
820 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
821 }
824 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
825 struct wpa_bss *selected,
826 struct wpa_ssid *ssid)
827 {
828 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
829 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
830 "PBC session overlap");
831 #ifdef CONFIG_P2P
832 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
833 return -1;
834 #endif /* CONFIG_P2P */
836 #ifdef CONFIG_WPS
837 wpas_wps_cancel(wpa_s);
838 #endif /* CONFIG_WPS */
839 return -1;
840 }
842 /*
843 * Do not trigger new association unless the BSSID has changed or if
844 * reassociation is requested. If we are in process of associating with
845 * the selected BSSID, do not trigger new attempt.
846 */
847 if (wpa_s->reassociate ||
848 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
849 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
850 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
851 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
852 0))) {
853 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
854 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
855 return 0;
856 }
857 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
858 "reassociate: %d selected: "MACSTR " bssid: " MACSTR
859 " pending: " MACSTR " wpa_state: %s",
860 wpa_s->reassociate, MAC2STR(selected->bssid),
861 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
862 wpa_supplicant_state_txt(wpa_s->wpa_state));
863 wpa_supplicant_associate(wpa_s, selected, ssid);
864 } else {
865 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
866 "selected AP");
867 }
869 return 0;
870 }
873 static struct wpa_ssid *
874 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
875 {
876 int prio;
877 struct wpa_ssid *ssid;
879 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
880 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
881 {
882 if (ssid->disabled)
883 continue;
884 if (ssid->mode == IEEE80211_MODE_IBSS ||
885 ssid->mode == IEEE80211_MODE_AP)
886 return ssid;
887 }
888 }
889 return NULL;
890 }
893 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
894 * on BSS added and BSS changed events */
895 static void wpa_supplicant_rsn_preauth_scan_results(
896 struct wpa_supplicant *wpa_s)
897 {
898 struct wpa_bss *bss;
900 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
901 return;
903 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
904 const u8 *ssid, *rsn;
906 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
907 if (ssid == NULL)
908 continue;
910 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
911 if (rsn == NULL)
912 continue;
914 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
915 }
917 }
920 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
921 struct wpa_bss *selected,
922 struct wpa_ssid *ssid,
923 struct wpa_scan_results *scan_res)
924 {
925 size_t i;
926 struct wpa_scan_res *current_bss = NULL;
927 int min_diff;
929 if (wpa_s->reassociate)
930 return 1; /* explicit request to reassociate */
931 if (wpa_s->wpa_state < WPA_ASSOCIATED)
932 return 1; /* we are not associated; continue */
933 if (wpa_s->current_ssid == NULL)
934 return 1; /* unknown current SSID */
935 if (wpa_s->current_ssid != ssid)
936 return 1; /* different network block */
938 if (wpas_driver_bss_selection(wpa_s))
939 return 0; /* Driver-based roaming */
941 for (i = 0; i < scan_res->num; i++) {
942 struct wpa_scan_res *res = scan_res->res[i];
943 const u8 *ie;
944 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
945 continue;
947 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
948 if (ie == NULL)
949 continue;
950 if (ie[1] != wpa_s->current_ssid->ssid_len ||
951 os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
952 continue;
953 current_bss = res;
954 break;
955 }
957 if (!current_bss)
958 return 1; /* current BSS not seen in scan results */
960 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
961 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
962 MAC2STR(current_bss->bssid), current_bss->level);
963 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
964 MAC2STR(selected->bssid), selected->level);
966 if (wpa_s->current_ssid->bssid_set &&
967 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
968 0) {
969 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
970 "has preferred BSSID");
971 return 1;
972 }
974 min_diff = 2;
975 if (current_bss->level < 0) {
976 if (current_bss->level < -85)
977 min_diff = 1;
978 else if (current_bss->level < -80)
979 min_diff = 2;
980 else if (current_bss->level < -75)
981 min_diff = 3;
982 else if (current_bss->level < -70)
983 min_diff = 4;
984 else
985 min_diff = 5;
986 }
987 if (abs(current_bss->level - selected->level) < min_diff) {
988 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
989 "in signal level");
990 return 0;
991 }
993 return 1;
994 }
996 /* Return < 0 if no scan results could be fetched. */
997 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
998 union wpa_event_data *data)
999 {
1000 struct wpa_bss *selected;
1001 struct wpa_ssid *ssid = NULL;
1002 struct wpa_scan_results *scan_res;
1003 int ap = 0;
1005 #ifdef CONFIG_AP
1006 if (wpa_s->ap_iface)
1007 ap = 1;
1008 #endif /* CONFIG_AP */
1010 wpa_supplicant_notify_scanning(wpa_s, 0);
1012 scan_res = wpa_supplicant_get_scan_results(wpa_s,
1013 data ? &data->scan_info :
1014 NULL, 1);
1015 if (scan_res == NULL) {
1016 if (wpa_s->conf->ap_scan == 2 || ap)
1017 return -1;
1018 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1019 "scanning again");
1020 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1021 return -1;
1022 }
1024 #ifndef CONFIG_NO_RANDOM_POOL
1025 size_t i, num;
1026 num = scan_res->num;
1027 if (num > 10)
1028 num = 10;
1029 for (i = 0; i < num; i++) {
1030 u8 buf[5];
1031 struct wpa_scan_res *res = scan_res->res[i];
1032 buf[0] = res->bssid[5];
1033 buf[1] = res->qual & 0xff;
1034 buf[2] = res->noise & 0xff;
1035 buf[3] = res->level & 0xff;
1036 buf[4] = res->tsf & 0xff;
1037 random_add_randomness(buf, sizeof(buf));
1038 }
1039 #endif /* CONFIG_NO_RANDOM_POOL */
1041 if (wpa_s->scan_res_handler) {
1042 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1043 struct wpa_scan_results *scan_res);
1045 scan_res_handler = wpa_s->scan_res_handler;
1046 wpa_s->scan_res_handler = NULL;
1047 scan_res_handler(wpa_s, scan_res);
1049 wpa_scan_results_free(scan_res);
1050 return 0;
1051 }
1053 if (ap) {
1054 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1055 #ifdef CONFIG_AP
1056 if (wpa_s->ap_iface->scan_cb)
1057 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1058 #endif /* CONFIG_AP */
1059 wpa_scan_results_free(scan_res);
1060 return 0;
1061 }
1063 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1064 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1065 wpas_notify_scan_results(wpa_s);
1067 wpas_notify_scan_done(wpa_s, 1);
1069 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
1070 wpa_scan_results_free(scan_res);
1071 return 0;
1072 }
1074 if (wpa_s->disconnected) {
1075 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1076 wpa_scan_results_free(scan_res);
1077 return 0;
1078 }
1080 if (!wpas_driver_bss_selection(wpa_s) &&
1081 bgscan_notify_scan(wpa_s, scan_res) == 1) {
1082 wpa_scan_results_free(scan_res);
1083 return 0;
1084 }
1086 selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
1088 if (selected) {
1089 int skip;
1090 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
1091 scan_res);
1092 wpa_scan_results_free(scan_res);
1093 if (skip) {
1094 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1095 return 0;
1096 }
1098 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1099 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1100 return -1;
1101 }
1102 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1103 } else {
1104 wpa_scan_results_free(scan_res);
1105 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1106 ssid = wpa_supplicant_pick_new_network(wpa_s);
1107 if (ssid) {
1108 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1109 wpa_supplicant_associate(wpa_s, NULL, ssid);
1110 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1111 } else {
1112 int timeout_sec = wpa_s->scan_interval;
1113 int timeout_usec = 0;
1114 #ifdef CONFIG_P2P
1115 if (wpa_s->p2p_in_provisioning) {
1116 /*
1117 * Use shorter wait during P2P Provisioning
1118 * state to speed up group formation.
1119 */
1120 timeout_sec = 0;
1121 timeout_usec = 250000;
1122 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1123 timeout_usec);
1124 return 0;
1125 }
1126 #endif /* CONFIG_P2P */
1127 if (wpa_supplicant_req_sched_scan(wpa_s))
1128 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1129 timeout_usec);
1130 }
1131 }
1132 return 0;
1133 }
1136 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1137 union wpa_event_data *data)
1138 {
1139 const char *rn, *rn2;
1140 struct wpa_supplicant *ifs;
1142 if (_wpa_supplicant_event_scan_results(wpa_s, data) < 0) {
1143 /*
1144 * If no scan results could be fetched, then no need to
1145 * notify those interfaces that did not actually request
1146 * this scan.
1147 */
1148 return;
1149 }
1151 /*
1152 * Check other interfaces to see if they have the same radio-name. If
1153 * so, they get updated with this same scan info.
1154 */
1155 if (!wpa_s->driver->get_radio_name)
1156 return;
1158 rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1159 if (rn == NULL || rn[0] == '\0')
1160 return;
1162 wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1163 "sharing same radio (%s) in event_scan_results", rn);
1165 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1166 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1167 continue;
1169 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1170 if (rn2 && os_strcmp(rn, rn2) == 0) {
1171 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1172 "sibling", ifs->ifname);
1173 _wpa_supplicant_event_scan_results(ifs, data);
1174 }
1175 }
1176 }
1178 #endif /* CONFIG_NO_SCAN_PROCESSING */
1181 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1182 union wpa_event_data *data)
1183 {
1184 int l, len, found = 0, wpa_found, rsn_found;
1185 const u8 *p;
1187 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1188 if (data->assoc_info.req_ies)
1189 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1190 data->assoc_info.req_ies_len);
1191 if (data->assoc_info.resp_ies) {
1192 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1193 data->assoc_info.resp_ies_len);
1194 #ifdef CONFIG_TDLS
1195 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1196 data->assoc_info.resp_ies_len);
1197 #endif /* CONFIG_TDLS */
1198 }
1199 if (data->assoc_info.beacon_ies)
1200 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1201 data->assoc_info.beacon_ies,
1202 data->assoc_info.beacon_ies_len);
1203 if (data->assoc_info.freq)
1204 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1205 data->assoc_info.freq);
1207 p = data->assoc_info.req_ies;
1208 l = data->assoc_info.req_ies_len;
1210 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1211 while (p && l >= 2) {
1212 len = p[1] + 2;
1213 if (len > l) {
1214 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1215 p, l);
1216 break;
1217 }
1218 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1219 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1220 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1221 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1222 break;
1223 found = 1;
1224 wpa_find_assoc_pmkid(wpa_s);
1225 break;
1226 }
1227 l -= len;
1228 p += len;
1229 }
1230 if (!found && data->assoc_info.req_ies)
1231 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1233 #ifdef CONFIG_IEEE80211R
1234 #ifdef CONFIG_SME
1235 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1236 u8 bssid[ETH_ALEN];
1237 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1238 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1239 data->assoc_info.resp_ies,
1240 data->assoc_info.resp_ies_len,
1241 bssid) < 0) {
1242 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1243 "Reassociation Response failed");
1244 wpa_supplicant_deauthenticate(
1245 wpa_s, WLAN_REASON_INVALID_IE);
1246 return -1;
1247 }
1248 }
1250 p = data->assoc_info.resp_ies;
1251 l = data->assoc_info.resp_ies_len;
1253 #ifdef CONFIG_WPS_STRICT
1254 if (p && wpa_s->current_ssid &&
1255 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1256 struct wpabuf *wps;
1257 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1258 if (wps == NULL) {
1259 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1260 "include WPS IE in (Re)Association Response");
1261 return -1;
1262 }
1264 if (wps_validate_assoc_resp(wps) < 0) {
1265 wpabuf_free(wps);
1266 wpa_supplicant_deauthenticate(
1267 wpa_s, WLAN_REASON_INVALID_IE);
1268 return -1;
1269 }
1270 wpabuf_free(wps);
1271 }
1272 #endif /* CONFIG_WPS_STRICT */
1274 /* Go through the IEs and make a copy of the MDIE, if present. */
1275 while (p && l >= 2) {
1276 len = p[1] + 2;
1277 if (len > l) {
1278 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1279 p, l);
1280 break;
1281 }
1282 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1283 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1284 wpa_s->sme.ft_used = 1;
1285 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1286 MOBILITY_DOMAIN_ID_LEN);
1287 break;
1288 }
1289 l -= len;
1290 p += len;
1291 }
1292 #endif /* CONFIG_SME */
1294 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1295 data->assoc_info.resp_ies_len);
1296 #endif /* CONFIG_IEEE80211R */
1298 /* WPA/RSN IE from Beacon/ProbeResp */
1299 p = data->assoc_info.beacon_ies;
1300 l = data->assoc_info.beacon_ies_len;
1302 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1303 */
1304 wpa_found = rsn_found = 0;
1305 while (p && l >= 2) {
1306 len = p[1] + 2;
1307 if (len > l) {
1308 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1309 p, l);
1310 break;
1311 }
1312 if (!wpa_found &&
1313 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1314 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1315 wpa_found = 1;
1316 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1317 }
1319 if (!rsn_found &&
1320 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1321 rsn_found = 1;
1322 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1323 }
1325 l -= len;
1326 p += len;
1327 }
1329 if (!wpa_found && data->assoc_info.beacon_ies)
1330 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1331 if (!rsn_found && data->assoc_info.beacon_ies)
1332 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1333 if (wpa_found || rsn_found)
1334 wpa_s->ap_ies_from_associnfo = 1;
1336 if (wpa_s->assoc_freq && data->assoc_info.freq &&
1337 wpa_s->assoc_freq != data->assoc_info.freq) {
1338 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1339 "%u to %u MHz",
1340 wpa_s->assoc_freq, data->assoc_info.freq);
1341 wpa_supplicant_update_scan_results(wpa_s);
1342 }
1344 wpa_s->assoc_freq = data->assoc_info.freq;
1346 return 0;
1347 }
1350 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1351 union wpa_event_data *data)
1352 {
1353 u8 bssid[ETH_ALEN];
1354 int ft_completed;
1355 int bssid_changed;
1356 struct wpa_driver_capa capa;
1358 #ifdef CONFIG_AP
1359 if (wpa_s->ap_iface) {
1360 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1361 data->assoc_info.addr,
1362 data->assoc_info.req_ies,
1363 data->assoc_info.req_ies_len,
1364 data->assoc_info.reassoc);
1365 return;
1366 }
1367 #endif /* CONFIG_AP */
1369 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1370 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1371 return;
1373 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1374 if (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1375 os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1376 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1377 MACSTR, MAC2STR(bssid));
1378 random_add_randomness(bssid, ETH_ALEN);
1379 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1380 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1381 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1382 if (bssid_changed)
1383 wpas_notify_bssid_changed(wpa_s);
1385 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1386 wpa_clear_keys(wpa_s, bssid);
1387 }
1388 if (wpa_supplicant_select_config(wpa_s) < 0) {
1389 wpa_supplicant_disassociate(
1390 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1391 return;
1392 }
1393 if (wpa_s->current_ssid) {
1394 struct wpa_bss *bss = NULL;
1395 struct wpa_ssid *ssid = wpa_s->current_ssid;
1396 if (ssid->ssid_len > 0)
1397 bss = wpa_bss_get(wpa_s, bssid,
1398 ssid->ssid, ssid->ssid_len);
1399 if (!bss)
1400 bss = wpa_bss_get_bssid(wpa_s, bssid);
1401 if (bss)
1402 wpa_s->current_bss = bss;
1403 }
1404 }
1406 #ifdef CONFIG_SME
1407 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1408 wpa_s->sme.prev_bssid_set = 1;
1409 #endif /* CONFIG_SME */
1411 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1412 if (wpa_s->current_ssid) {
1413 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1414 * initialized before association, but for other modes,
1415 * initialize PC/SC here, if the current configuration needs
1416 * smartcard or SIM/USIM. */
1417 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1418 }
1419 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1420 if (wpa_s->l2)
1421 l2_packet_notify_auth_start(wpa_s->l2);
1423 /*
1424 * Set portEnabled first to FALSE in order to get EAP state machine out
1425 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1426 * state machine may transit to AUTHENTICATING state based on obsolete
1427 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1428 * AUTHENTICATED without ever giving chance to EAP state machine to
1429 * reset the state.
1430 */
1431 if (!ft_completed) {
1432 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1433 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1434 }
1435 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1436 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1437 /* 802.1X::portControl = Auto */
1438 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1439 wpa_s->eapol_received = 0;
1440 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1441 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1442 (wpa_s->current_ssid &&
1443 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1444 wpa_supplicant_cancel_auth_timeout(wpa_s);
1445 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1446 } else if (!ft_completed) {
1447 /* Timeout for receiving the first EAPOL packet */
1448 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1449 }
1450 wpa_supplicant_cancel_scan(wpa_s);
1452 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1453 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1454 /*
1455 * We are done; the driver will take care of RSN 4-way
1456 * handshake.
1457 */
1458 wpa_supplicant_cancel_auth_timeout(wpa_s);
1459 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1460 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1461 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1462 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1463 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1464 /*
1465 * The driver will take care of RSN 4-way handshake, so we need
1466 * to allow EAPOL supplicant to complete its work without
1467 * waiting for WPA supplicant.
1468 */
1469 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1470 } else if (ft_completed) {
1471 /*
1472 * FT protocol completed - make sure EAPOL state machine ends
1473 * up in authenticated.
1474 */
1475 wpa_supplicant_cancel_auth_timeout(wpa_s);
1476 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1477 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1478 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1479 }
1481 if (wpa_s->pending_eapol_rx) {
1482 struct os_time now, age;
1483 os_get_time(&now);
1484 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1485 if (age.sec == 0 && age.usec < 100000 &&
1486 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1487 0) {
1488 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1489 "frame that was received just before "
1490 "association notification");
1491 wpa_supplicant_rx_eapol(
1492 wpa_s, wpa_s->pending_eapol_rx_src,
1493 wpabuf_head(wpa_s->pending_eapol_rx),
1494 wpabuf_len(wpa_s->pending_eapol_rx));
1495 }
1496 wpabuf_free(wpa_s->pending_eapol_rx);
1497 wpa_s->pending_eapol_rx = NULL;
1498 }
1500 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1501 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1502 wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1503 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1504 /* Set static WEP keys again */
1505 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1506 }
1508 #ifdef CONFIG_IBSS_RSN
1509 if (wpa_s->current_ssid &&
1510 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1511 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1512 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1513 wpa_s->ibss_rsn == NULL) {
1514 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1515 if (!wpa_s->ibss_rsn) {
1516 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1517 wpa_supplicant_deauthenticate(
1518 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1519 return;
1520 }
1522 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1523 }
1524 #endif /* CONFIG_IBSS_RSN */
1525 }
1528 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1529 u16 reason_code)
1530 {
1531 const u8 *bssid;
1532 int authenticating;
1533 u8 prev_pending_bssid[ETH_ALEN];
1535 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1536 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1538 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1539 /*
1540 * At least Host AP driver and a Prism3 card seemed to be
1541 * generating streams of disconnected events when configuring
1542 * IBSS for WPA-None. Ignore them for now.
1543 */
1544 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1545 "IBSS/WPA-None mode");
1546 return;
1547 }
1549 if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1550 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1551 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1552 "pre-shared key may be incorrect");
1553 }
1554 if (!wpa_s->auto_reconnect_disabled ||
1555 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1556 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect enabled: try to "
1557 "reconnect (wps=%d)",
1558 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS);
1559 if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1560 wpa_supplicant_req_scan(wpa_s, 0, 100000);
1561 } else {
1562 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect disabled: do not "
1563 "try to re-connect");
1564 wpa_s->reassociate = 0;
1565 wpa_s->disconnected = 1;
1566 }
1567 bssid = wpa_s->bssid;
1568 if (is_zero_ether_addr(bssid))
1569 bssid = wpa_s->pending_bssid;
1570 wpas_connection_failed(wpa_s, bssid);
1571 wpa_sm_notify_disassoc(wpa_s->wpa);
1572 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1573 " reason=%d",
1574 MAC2STR(bssid), reason_code);
1575 if (wpa_supplicant_dynamic_keys(wpa_s)) {
1576 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1577 wpa_s->keys_cleared = 0;
1578 wpa_clear_keys(wpa_s, wpa_s->bssid);
1579 }
1580 wpa_supplicant_mark_disassoc(wpa_s);
1582 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1583 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1584 }
1587 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1588 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
1589 {
1590 struct wpa_supplicant *wpa_s = eloop_ctx;
1592 if (!wpa_s->pending_mic_error_report)
1593 return;
1595 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1596 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1597 wpa_s->pending_mic_error_report = 0;
1598 }
1599 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1602 static void
1603 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1604 union wpa_event_data *data)
1605 {
1606 int pairwise;
1607 struct os_time t;
1609 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1610 pairwise = (data && data->michael_mic_failure.unicast);
1611 os_get_time(&t);
1612 if ((wpa_s->last_michael_mic_error &&
1613 t.sec - wpa_s->last_michael_mic_error <= 60) ||
1614 wpa_s->pending_mic_error_report) {
1615 if (wpa_s->pending_mic_error_report) {
1616 /*
1617 * Send the pending MIC error report immediately since
1618 * we are going to start countermeasures and AP better
1619 * do the same.
1620 */
1621 wpa_sm_key_request(wpa_s->wpa, 1,
1622 wpa_s->pending_mic_error_pairwise);
1623 }
1625 /* Send the new MIC error report immediately since we are going
1626 * to start countermeasures and AP better do the same.
1627 */
1628 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1630 /* initialize countermeasures */
1631 wpa_s->countermeasures = 1;
1632 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1634 /*
1635 * Need to wait for completion of request frame. We do not get
1636 * any callback for the message completion, so just wait a
1637 * short while and hope for the best. */
1638 os_sleep(0, 10000);
1640 wpa_drv_set_countermeasures(wpa_s, 1);
1641 wpa_supplicant_deauthenticate(wpa_s,
1642 WLAN_REASON_MICHAEL_MIC_FAILURE);
1643 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1644 wpa_s, NULL);
1645 eloop_register_timeout(60, 0,
1646 wpa_supplicant_stop_countermeasures,
1647 wpa_s, NULL);
1648 /* TODO: mark the AP rejected for 60 second. STA is
1649 * allowed to associate with another AP.. */
1650 } else {
1651 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1652 if (wpa_s->mic_errors_seen) {
1653 /*
1654 * Reduce the effectiveness of Michael MIC error
1655 * reports as a means for attacking against TKIP if
1656 * more than one MIC failure is noticed with the same
1657 * PTK. We delay the transmission of the reports by a
1658 * random time between 0 and 60 seconds in order to
1659 * force the attacker wait 60 seconds before getting
1660 * the information on whether a frame resulted in a MIC
1661 * failure.
1662 */
1663 u8 rval[4];
1664 int sec;
1666 if (os_get_random(rval, sizeof(rval)) < 0)
1667 sec = os_random() % 60;
1668 else
1669 sec = WPA_GET_BE32(rval) % 60;
1670 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
1671 "report %d seconds", sec);
1672 wpa_s->pending_mic_error_report = 1;
1673 wpa_s->pending_mic_error_pairwise = pairwise;
1674 eloop_cancel_timeout(
1675 wpa_supplicant_delayed_mic_error_report,
1676 wpa_s, NULL);
1677 eloop_register_timeout(
1678 sec, os_random() % 1000000,
1679 wpa_supplicant_delayed_mic_error_report,
1680 wpa_s, NULL);
1681 } else {
1682 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1683 }
1684 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1685 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1686 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1687 }
1688 wpa_s->last_michael_mic_error = t.sec;
1689 wpa_s->mic_errors_seen++;
1690 }
1693 #ifdef CONFIG_TERMINATE_ONLASTIF
1694 static int any_interfaces(struct wpa_supplicant *head)
1695 {
1696 struct wpa_supplicant *wpa_s;
1698 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1699 if (!wpa_s->interface_removed)
1700 return 1;
1701 return 0;
1702 }
1703 #endif /* CONFIG_TERMINATE_ONLASTIF */
1706 static void
1707 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1708 union wpa_event_data *data)
1709 {
1710 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1711 return;
1713 switch (data->interface_status.ievent) {
1714 case EVENT_INTERFACE_ADDED:
1715 if (!wpa_s->interface_removed)
1716 break;
1717 wpa_s->interface_removed = 0;
1718 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
1719 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1720 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
1721 "driver after interface was added");
1722 }
1723 break;
1724 case EVENT_INTERFACE_REMOVED:
1725 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
1726 wpa_s->interface_removed = 1;
1727 wpa_supplicant_mark_disassoc(wpa_s);
1728 l2_packet_deinit(wpa_s->l2);
1729 wpa_s->l2 = NULL;
1730 #ifdef CONFIG_IBSS_RSN
1731 ibss_rsn_deinit(wpa_s->ibss_rsn);
1732 wpa_s->ibss_rsn = NULL;
1733 #endif /* CONFIG_IBSS_RSN */
1734 #ifdef CONFIG_TERMINATE_ONLASTIF
1735 /* check if last interface */
1736 if (!any_interfaces(wpa_s->global->ifaces))
1737 eloop_terminate();
1738 #endif /* CONFIG_TERMINATE_ONLASTIF */
1739 break;
1740 }
1741 }
1744 #ifdef CONFIG_PEERKEY
1745 static void
1746 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1747 union wpa_event_data *data)
1748 {
1749 if (data == NULL)
1750 return;
1751 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1752 }
1753 #endif /* CONFIG_PEERKEY */
1756 #ifdef CONFIG_TDLS
1757 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
1758 union wpa_event_data *data)
1759 {
1760 if (data == NULL)
1761 return;
1762 switch (data->tdls.oper) {
1763 case TDLS_REQUEST_SETUP:
1764 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
1765 break;
1766 case TDLS_REQUEST_TEARDOWN:
1767 wpa_tdls_send_teardown(wpa_s->wpa, data->tdls.peer,
1768 data->tdls.reason_code);
1769 break;
1770 }
1771 }
1772 #endif /* CONFIG_TDLS */
1775 #ifdef CONFIG_IEEE80211R
1776 static void
1777 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1778 union wpa_event_data *data)
1779 {
1780 if (data == NULL)
1781 return;
1783 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1784 data->ft_ies.ies_len,
1785 data->ft_ies.ft_action,
1786 data->ft_ies.target_ap,
1787 data->ft_ies.ric_ies,
1788 data->ft_ies.ric_ies_len) < 0) {
1789 /* TODO: prevent MLME/driver from trying to associate? */
1790 }
1791 }
1792 #endif /* CONFIG_IEEE80211R */
1795 #ifdef CONFIG_IBSS_RSN
1796 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1797 union wpa_event_data *data)
1798 {
1799 struct wpa_ssid *ssid;
1800 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1801 return;
1802 if (data == NULL)
1803 return;
1804 ssid = wpa_s->current_ssid;
1805 if (ssid == NULL)
1806 return;
1807 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
1808 return;
1810 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1811 }
1812 #endif /* CONFIG_IBSS_RSN */
1815 #ifdef CONFIG_IEEE80211R
1816 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1817 size_t len)
1818 {
1819 const u8 *sta_addr, *target_ap_addr;
1820 u16 status;
1822 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1823 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1824 return; /* only SME case supported for now */
1825 if (len < 1 + 2 * ETH_ALEN + 2)
1826 return;
1827 if (data[0] != 2)
1828 return; /* Only FT Action Response is supported for now */
1829 sta_addr = data + 1;
1830 target_ap_addr = data + 1 + ETH_ALEN;
1831 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1832 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
1833 MACSTR " TargetAP " MACSTR " status %u",
1834 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1836 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1837 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1838 " in FT Action Response", MAC2STR(sta_addr));
1839 return;
1840 }
1842 if (status) {
1843 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
1844 "failure (status code %d)", status);
1845 /* TODO: report error to FT code(?) */
1846 return;
1847 }
1849 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1850 len - (1 + 2 * ETH_ALEN + 2), 1,
1851 target_ap_addr, NULL, 0) < 0)
1852 return;
1854 #ifdef CONFIG_SME
1855 {
1856 struct wpa_bss *bss;
1857 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1858 if (bss)
1859 wpa_s->sme.freq = bss->freq;
1860 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1861 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1862 WLAN_AUTH_FT);
1863 }
1864 #endif /* CONFIG_SME */
1865 }
1866 #endif /* CONFIG_IEEE80211R */
1869 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
1870 struct unprot_deauth *e)
1871 {
1872 #ifdef CONFIG_IEEE80211W
1873 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
1874 "dropped: " MACSTR " -> " MACSTR
1875 " (reason code %u)",
1876 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1877 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1878 #endif /* CONFIG_IEEE80211W */
1879 }
1882 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
1883 struct unprot_disassoc *e)
1884 {
1885 #ifdef CONFIG_IEEE80211W
1886 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
1887 "dropped: " MACSTR " -> " MACSTR
1888 " (reason code %u)",
1889 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1890 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1891 #endif /* CONFIG_IEEE80211W */
1892 }
1895 static void wnm_action_rx(struct wpa_supplicant *wpa_s, struct rx_action *rx)
1896 {
1897 u8 action, mode;
1898 const u8 *pos, *end;
1900 if (rx->data == NULL || rx->len == 0)
1901 return;
1903 pos = rx->data;
1904 end = pos + rx->len;
1905 action = *pos++;
1907 wpa_printf(MSG_DEBUG, "WNM: RX action %u from " MACSTR,
1908 action, MAC2STR(rx->sa));
1909 switch (action) {
1910 case WNM_BSS_TRANS_MGMT_REQ:
1911 if (pos + 5 > end)
1912 break;
1913 wpa_printf(MSG_DEBUG, "WNM: BSS Transition Management "
1914 "Request: dialog_token=%u request_mode=0x%x "
1915 "disassoc_timer=%u validity_interval=%u",
1916 pos[0], pos[1], WPA_GET_LE16(pos + 2), pos[4]);
1917 mode = pos[1];
1918 pos += 5;
1919 if (mode & 0x08)
1920 pos += 12; /* BSS Termination Duration */
1921 if (mode & 0x10) {
1922 char url[256];
1923 if (pos + 1 > end || pos + 1 + pos[0] > end) {
1924 wpa_printf(MSG_DEBUG, "WNM: Invalid BSS "
1925 "Transition Management Request "
1926 "(URL)");
1927 break;
1928 }
1929 os_memcpy(url, pos + 1, pos[0]);
1930 url[pos[0]] = '\0';
1931 wpa_msg(wpa_s, MSG_INFO, "WNM: ESS Disassociation "
1932 "Imminent - session_info_url=%s", url);
1933 }
1934 break;
1935 }
1936 }
1939 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1940 union wpa_event_data *data)
1941 {
1942 struct wpa_supplicant *wpa_s = ctx;
1943 u16 reason_code = 0;
1945 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
1946 event != EVENT_INTERFACE_ENABLED &&
1947 event != EVENT_INTERFACE_STATUS) {
1948 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore event %d while interface is "
1949 "disabled", event);
1950 return;
1951 }
1953 wpa_dbg(wpa_s, MSG_DEBUG, "Event %d received on interface %s",
1954 event, wpa_s->ifname);
1956 switch (event) {
1957 case EVENT_AUTH:
1958 sme_event_auth(wpa_s, data);
1959 break;
1960 case EVENT_ASSOC:
1961 wpa_supplicant_event_assoc(wpa_s, data);
1962 break;
1963 case EVENT_DISASSOC:
1964 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
1965 if (data) {
1966 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1967 data->disassoc_info.reason_code);
1968 if (data->disassoc_info.addr)
1969 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
1970 MAC2STR(data->disassoc_info.addr));
1971 }
1972 #ifdef CONFIG_AP
1973 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
1974 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1975 data->disassoc_info.addr);
1976 break;
1977 }
1978 #endif /* CONFIG_AP */
1979 if (data) {
1980 reason_code = data->disassoc_info.reason_code;
1981 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
1982 data->disassoc_info.ie,
1983 data->disassoc_info.ie_len);
1984 #ifdef CONFIG_P2P
1985 wpas_p2p_disassoc_notif(
1986 wpa_s, data->disassoc_info.addr, reason_code,
1987 data->disassoc_info.ie,
1988 data->disassoc_info.ie_len);
1989 #endif /* CONFIG_P2P */
1990 }
1991 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1992 sme_event_disassoc(wpa_s, data);
1993 /* fall through */
1994 case EVENT_DEAUTH:
1995 if (event == EVENT_DEAUTH) {
1996 wpa_dbg(wpa_s, MSG_DEBUG,
1997 "Deauthentication notification");
1998 if (data) {
1999 reason_code = data->deauth_info.reason_code;
2000 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
2001 data->deauth_info.reason_code);
2002 if (data->deauth_info.addr) {
2003 wpa_dbg(wpa_s, MSG_DEBUG, " * address "
2004 MACSTR,
2005 MAC2STR(data->deauth_info.
2006 addr));
2007 }
2008 wpa_hexdump(MSG_DEBUG,
2009 "Deauthentication frame IE(s)",
2010 data->deauth_info.ie,
2011 data->deauth_info.ie_len);
2012 #ifdef CONFIG_P2P
2013 wpas_p2p_deauth_notif(
2014 wpa_s, data->deauth_info.addr,
2015 reason_code,
2016 data->deauth_info.ie,
2017 data->deauth_info.ie_len);
2018 #endif /* CONFIG_P2P */
2019 }
2020 }
2021 #ifdef CONFIG_AP
2022 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
2023 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2024 data->deauth_info.addr);
2025 break;
2026 }
2027 #endif /* CONFIG_AP */
2028 wpa_supplicant_event_disassoc(wpa_s, reason_code);
2029 break;
2030 case EVENT_MICHAEL_MIC_FAILURE:
2031 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2032 break;
2033 #ifndef CONFIG_NO_SCAN_PROCESSING
2034 case EVENT_SCAN_RESULTS:
2035 wpa_supplicant_event_scan_results(wpa_s, data);
2036 break;
2037 #endif /* CONFIG_NO_SCAN_PROCESSING */
2038 case EVENT_ASSOCINFO:
2039 wpa_supplicant_event_associnfo(wpa_s, data);
2040 break;
2041 case EVENT_INTERFACE_STATUS:
2042 wpa_supplicant_event_interface_status(wpa_s, data);
2043 break;
2044 case EVENT_PMKID_CANDIDATE:
2045 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2046 break;
2047 #ifdef CONFIG_PEERKEY
2048 case EVENT_STKSTART:
2049 wpa_supplicant_event_stkstart(wpa_s, data);
2050 break;
2051 #endif /* CONFIG_PEERKEY */
2052 #ifdef CONFIG_TDLS
2053 case EVENT_TDLS:
2054 wpa_supplicant_event_tdls(wpa_s, data);
2055 break;
2056 #endif /* CONFIG_TDLS */
2057 #ifdef CONFIG_IEEE80211R
2058 case EVENT_FT_RESPONSE:
2059 wpa_supplicant_event_ft_response(wpa_s, data);
2060 break;
2061 #endif /* CONFIG_IEEE80211R */
2062 #ifdef CONFIG_IBSS_RSN
2063 case EVENT_IBSS_RSN_START:
2064 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2065 break;
2066 #endif /* CONFIG_IBSS_RSN */
2067 case EVENT_ASSOC_REJECT:
2068 if (data->assoc_reject.bssid)
2069 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2070 "bssid=" MACSTR " status_code=%u",
2071 MAC2STR(data->assoc_reject.bssid),
2072 data->assoc_reject.status_code);
2073 else
2074 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2075 "status_code=%u",
2076 data->assoc_reject.status_code);
2077 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2078 sme_event_assoc_reject(wpa_s, data);
2079 break;
2080 case EVENT_AUTH_TIMED_OUT:
2081 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2082 sme_event_auth_timed_out(wpa_s, data);
2083 break;
2084 case EVENT_ASSOC_TIMED_OUT:
2085 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2086 sme_event_assoc_timed_out(wpa_s, data);
2087 break;
2088 case EVENT_TX_STATUS:
2089 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2090 " type=%d stype=%d",
2091 MAC2STR(data->tx_status.dst),
2092 data->tx_status.type, data->tx_status.stype);
2093 #ifdef CONFIG_AP
2094 if (wpa_s->ap_iface == NULL) {
2095 #ifdef CONFIG_OFFCHANNEL
2096 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2097 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2098 offchannel_send_action_tx_status(
2099 wpa_s, data->tx_status.dst,
2100 data->tx_status.data,
2101 data->tx_status.data_len,
2102 data->tx_status.ack ?
2103 OFFCHANNEL_SEND_ACTION_SUCCESS :
2104 OFFCHANNEL_SEND_ACTION_NO_ACK);
2105 #endif /* CONFIG_OFFCHANNEL */
2106 break;
2107 }
2108 #endif /* CONFIG_AP */
2109 #ifdef CONFIG_OFFCHANNEL
2110 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2111 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2112 /*
2113 * Catch TX status events for Action frames we sent via group
2114 * interface in GO mode.
2115 */
2116 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2117 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2118 os_memcmp(wpa_s->parent->pending_action_dst,
2119 data->tx_status.dst, ETH_ALEN) == 0) {
2120 offchannel_send_action_tx_status(
2121 wpa_s->parent, data->tx_status.dst,
2122 data->tx_status.data,
2123 data->tx_status.data_len,
2124 data->tx_status.ack ?
2125 OFFCHANNEL_SEND_ACTION_SUCCESS :
2126 OFFCHANNEL_SEND_ACTION_NO_ACK);
2127 break;
2128 }
2129 #endif /* CONFIG_OFFCHANNEL */
2130 #ifdef CONFIG_AP
2131 switch (data->tx_status.type) {
2132 case WLAN_FC_TYPE_MGMT:
2133 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2134 data->tx_status.data_len,
2135 data->tx_status.stype,
2136 data->tx_status.ack);
2137 break;
2138 case WLAN_FC_TYPE_DATA:
2139 ap_tx_status(wpa_s, data->tx_status.dst,
2140 data->tx_status.data,
2141 data->tx_status.data_len,
2142 data->tx_status.ack);
2143 break;
2144 }
2145 #endif /* CONFIG_AP */
2146 break;
2147 #ifdef CONFIG_AP
2148 case EVENT_DRIVER_CLIENT_POLL_OK:
2149 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2150 break;
2151 case EVENT_RX_FROM_UNKNOWN:
2152 if (wpa_s->ap_iface == NULL)
2153 break;
2154 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2155 data->rx_from_unknown.wds);
2156 break;
2157 case EVENT_RX_MGMT:
2158 if (wpa_s->ap_iface == NULL) {
2159 #ifdef CONFIG_P2P
2160 u16 fc, stype;
2161 const struct ieee80211_mgmt *mgmt;
2162 mgmt = (const struct ieee80211_mgmt *)
2163 data->rx_mgmt.frame;
2164 fc = le_to_host16(mgmt->frame_control);
2165 stype = WLAN_FC_GET_STYPE(fc);
2166 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2167 data->rx_mgmt.frame_len > 24) {
2168 const u8 *src = mgmt->sa;
2169 const u8 *ie = mgmt->u.probe_req.variable;
2170 size_t ie_len = data->rx_mgmt.frame_len -
2171 (mgmt->u.probe_req.variable -
2172 data->rx_mgmt.frame);
2173 wpas_p2p_probe_req_rx(wpa_s, src, mgmt->da,
2174 mgmt->bssid, ie, ie_len);
2175 break;
2176 }
2177 #endif /* CONFIG_P2P */
2178 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2179 "management frame in non-AP mode");
2180 break;
2181 }
2182 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2183 break;
2184 #endif /* CONFIG_AP */
2185 case EVENT_RX_ACTION:
2186 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2187 " Category=%u DataLen=%d freq=%d MHz",
2188 MAC2STR(data->rx_action.sa),
2189 data->rx_action.category, (int) data->rx_action.len,
2190 data->rx_action.freq);
2191 #ifdef CONFIG_IEEE80211R
2192 if (data->rx_action.category == WLAN_ACTION_FT) {
2193 ft_rx_action(wpa_s, data->rx_action.data,
2194 data->rx_action.len);
2195 break;
2196 }
2197 #endif /* CONFIG_IEEE80211R */
2198 #ifdef CONFIG_IEEE80211W
2199 #ifdef CONFIG_SME
2200 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2201 sme_sa_query_rx(wpa_s, data->rx_action.sa,
2202 data->rx_action.data,
2203 data->rx_action.len);
2204 break;
2205 }
2206 #endif /* CONFIG_SME */
2207 #endif /* CONFIG_IEEE80211W */
2208 #ifdef CONFIG_GAS
2209 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2210 gas_query_rx(wpa_s->gas, data->rx_action.da,
2211 data->rx_action.sa, data->rx_action.bssid,
2212 data->rx_action.data, data->rx_action.len,
2213 data->rx_action.freq) == 0)
2214 break;
2215 #endif /* CONFIG_GAS */
2216 if (data->rx_action.category == WLAN_ACTION_WNM) {
2217 wnm_action_rx(wpa_s, &data->rx_action);
2218 break;
2219 }
2220 #ifdef CONFIG_TDLS
2221 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2222 data->rx_action.len >= 4 &&
2223 data->rx_action.data[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2224 wpa_dbg(wpa_s, MSG_DEBUG, "TDLS: Received Discovery "
2225 "Response from " MACSTR,
2226 MAC2STR(data->rx_action.sa));
2227 break;
2228 }
2229 #endif /* CONFIG_TDLS */
2230 #ifdef CONFIG_P2P
2231 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2232 data->rx_action.sa,
2233 data->rx_action.bssid,
2234 data->rx_action.category,
2235 data->rx_action.data,
2236 data->rx_action.len, data->rx_action.freq);
2237 #endif /* CONFIG_P2P */
2238 break;
2239 case EVENT_RX_PROBE_REQ:
2240 if (data->rx_probe_req.sa == NULL ||
2241 data->rx_probe_req.ie == NULL)
2242 break;
2243 #ifdef CONFIG_AP
2244 if (wpa_s->ap_iface) {
2245 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2246 data->rx_probe_req.sa,
2247 data->rx_probe_req.da,
2248 data->rx_probe_req.bssid,
2249 data->rx_probe_req.ie,
2250 data->rx_probe_req.ie_len);
2251 break;
2252 }
2253 #endif /* CONFIG_AP */
2254 #ifdef CONFIG_P2P
2255 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2256 data->rx_probe_req.da,
2257 data->rx_probe_req.bssid,
2258 data->rx_probe_req.ie,
2259 data->rx_probe_req.ie_len);
2260 #endif /* CONFIG_P2P */
2261 break;
2262 case EVENT_REMAIN_ON_CHANNEL:
2263 #ifdef CONFIG_OFFCHANNEL
2264 offchannel_remain_on_channel_cb(
2265 wpa_s, data->remain_on_channel.freq,
2266 data->remain_on_channel.duration);
2267 #endif /* CONFIG_OFFCHANNEL */
2268 #ifdef CONFIG_P2P
2269 wpas_p2p_remain_on_channel_cb(
2270 wpa_s, data->remain_on_channel.freq,
2271 data->remain_on_channel.duration);
2272 #endif /* CONFIG_P2P */
2273 break;
2274 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2275 #ifdef CONFIG_OFFCHANNEL
2276 offchannel_cancel_remain_on_channel_cb(
2277 wpa_s, data->remain_on_channel.freq);
2278 #endif /* CONFIG_OFFCHANNEL */
2279 #ifdef CONFIG_P2P
2280 wpas_p2p_cancel_remain_on_channel_cb(
2281 wpa_s, data->remain_on_channel.freq);
2282 #endif /* CONFIG_P2P */
2283 break;
2284 #ifdef CONFIG_P2P
2285 case EVENT_P2P_DEV_FOUND: {
2286 struct p2p_peer_info peer_info;
2288 os_memset(&peer_info, 0, sizeof(peer_info));
2289 if (data->p2p_dev_found.dev_addr)
2290 os_memcpy(peer_info.p2p_device_addr,
2291 data->p2p_dev_found.dev_addr, ETH_ALEN);
2292 if (data->p2p_dev_found.pri_dev_type)
2293 os_memcpy(peer_info.pri_dev_type,
2294 data->p2p_dev_found.pri_dev_type,
2295 sizeof(peer_info.pri_dev_type));
2296 if (data->p2p_dev_found.dev_name)
2297 os_strlcpy(peer_info.device_name,
2298 data->p2p_dev_found.dev_name,
2299 sizeof(peer_info.device_name));
2300 peer_info.config_methods = data->p2p_dev_found.config_methods;
2301 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2302 peer_info.group_capab = data->p2p_dev_found.group_capab;
2304 /*
2305 * FIX: new_device=1 is not necessarily correct. We should
2306 * maintain a P2P peer database in wpa_supplicant and update
2307 * this information based on whether the peer is truly new.
2308 */
2309 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2310 break;
2311 }
2312 case EVENT_P2P_GO_NEG_REQ_RX:
2313 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2314 data->p2p_go_neg_req_rx.dev_passwd_id);
2315 break;
2316 case EVENT_P2P_GO_NEG_COMPLETED:
2317 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2318 break;
2319 case EVENT_P2P_PROV_DISC_REQUEST:
2320 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2321 data->p2p_prov_disc_req.config_methods,
2322 data->p2p_prov_disc_req.dev_addr,
2323 data->p2p_prov_disc_req.pri_dev_type,
2324 data->p2p_prov_disc_req.dev_name,
2325 data->p2p_prov_disc_req.supp_config_methods,
2326 data->p2p_prov_disc_req.dev_capab,
2327 data->p2p_prov_disc_req.group_capab);
2328 break;
2329 case EVENT_P2P_PROV_DISC_RESPONSE:
2330 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2331 data->p2p_prov_disc_resp.config_methods);
2332 break;
2333 case EVENT_P2P_SD_REQUEST:
2334 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2335 data->p2p_sd_req.sa,
2336 data->p2p_sd_req.dialog_token,
2337 data->p2p_sd_req.update_indic,
2338 data->p2p_sd_req.tlvs,
2339 data->p2p_sd_req.tlvs_len);
2340 break;
2341 case EVENT_P2P_SD_RESPONSE:
2342 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2343 data->p2p_sd_resp.update_indic,
2344 data->p2p_sd_resp.tlvs,
2345 data->p2p_sd_resp.tlvs_len);
2346 break;
2347 #endif /* CONFIG_P2P */
2348 case EVENT_EAPOL_RX:
2349 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2350 data->eapol_rx.data,
2351 data->eapol_rx.data_len);
2352 break;
2353 case EVENT_SIGNAL_CHANGE:
2354 bgscan_notify_signal_change(
2355 wpa_s, data->signal_change.above_threshold,
2356 data->signal_change.current_signal,
2357 data->signal_change.current_noise,
2358 data->signal_change.current_txrate);
2359 break;
2360 case EVENT_INTERFACE_ENABLED:
2361 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2362 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2363 #ifdef CONFIG_AP
2364 if (!wpa_s->ap_iface) {
2365 wpa_supplicant_set_state(wpa_s,
2366 WPA_DISCONNECTED);
2367 wpa_supplicant_req_scan(wpa_s, 0, 0);
2368 } else
2369 wpa_supplicant_set_state(wpa_s,
2370 WPA_COMPLETED);
2371 #else /* CONFIG_AP */
2372 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2373 wpa_supplicant_req_scan(wpa_s, 0, 0);
2374 #endif /* CONFIG_AP */
2375 }
2376 break;
2377 case EVENT_INTERFACE_DISABLED:
2378 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2379 wpa_supplicant_mark_disassoc(wpa_s);
2380 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2381 break;
2382 case EVENT_CHANNEL_LIST_CHANGED:
2383 if (wpa_s->drv_priv == NULL)
2384 break; /* Ignore event during drv initialization */
2385 #ifdef CONFIG_P2P
2386 wpas_p2p_update_channel_list(wpa_s);
2387 #endif /* CONFIG_P2P */
2388 break;
2389 case EVENT_INTERFACE_UNAVAILABLE:
2390 #ifdef CONFIG_P2P
2391 wpas_p2p_interface_unavailable(wpa_s);
2392 #endif /* CONFIG_P2P */
2393 break;
2394 case EVENT_BEST_CHANNEL:
2395 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2396 "(%d %d %d)",
2397 data->best_chan.freq_24, data->best_chan.freq_5,
2398 data->best_chan.freq_overall);
2399 wpa_s->best_24_freq = data->best_chan.freq_24;
2400 wpa_s->best_5_freq = data->best_chan.freq_5;
2401 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2402 #ifdef CONFIG_P2P
2403 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2404 data->best_chan.freq_5,
2405 data->best_chan.freq_overall);
2406 #endif /* CONFIG_P2P */
2407 break;
2408 case EVENT_UNPROT_DEAUTH:
2409 wpa_supplicant_event_unprot_deauth(wpa_s,
2410 &data->unprot_deauth);
2411 break;
2412 case EVENT_UNPROT_DISASSOC:
2413 wpa_supplicant_event_unprot_disassoc(wpa_s,
2414 &data->unprot_disassoc);
2415 break;
2416 case EVENT_STATION_LOW_ACK:
2417 #ifdef CONFIG_AP
2418 if (wpa_s->ap_iface && data)
2419 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2420 data->low_ack.addr);
2421 #endif /* CONFIG_AP */
2422 #ifdef CONFIG_TDLS
2423 if (data)
2424 wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
2425 #endif /* CONFIG_TDLS */
2426 break;
2427 case EVENT_IBSS_PEER_LOST:
2428 #ifdef CONFIG_IBSS_RSN
2429 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2430 #endif /* CONFIG_IBSS_RSN */
2431 break;
2432 case EVENT_DRIVER_GTK_REKEY:
2433 if (os_memcmp(data->driver_gtk_rekey.bssid,
2434 wpa_s->bssid, ETH_ALEN))
2435 break;
2436 if (!wpa_s->wpa)
2437 break;
2438 wpa_sm_update_replay_ctr(wpa_s->wpa,
2439 data->driver_gtk_rekey.replay_ctr);
2440 break;
2441 case EVENT_SCHED_SCAN_STOPPED:
2442 wpa_s->sched_scanning = 0;
2443 wpa_supplicant_notify_scanning(wpa_s, 0);
2445 /*
2446 * If we timed out, start a new sched scan to continue
2447 * searching for more SSIDs.
2448 */
2449 if (wpa_s->sched_scan_timed_out)
2450 wpa_supplicant_req_sched_scan(wpa_s);
2451 break;
2452 case EVENT_WPS_BUTTON_PUSHED:
2453 #ifdef CONFIG_WPS
2454 wpas_wps_start_pbc(wpa_s, NULL, 0);
2455 #endif /* CONFIG_WPS */
2456 break;
2457 default:
2458 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2459 break;
2460 }
2461 }