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 */
14
15 #include "includes.h"
16
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"
47
48
wpa_supplicant_select_config(struct wpa_supplicant * wpa_s)49 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
50 {
51 struct wpa_ssid *ssid, *old_ssid;
52
53 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
54 return 0;
55
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 }
64
65 if (ssid->disabled) {
66 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
67 return -1;
68 }
69
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 }
84
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);
93
94 return 0;
95 }
96
97
wpa_supplicant_stop_countermeasures(void * eloop_ctx,void * sock_ctx)98 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
99 void *sock_ctx)
100 {
101 struct wpa_supplicant *wpa_s = eloop_ctx;
102
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 }
110
111
wpa_supplicant_mark_disassoc(struct wpa_supplicant * wpa_s)112 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
113 {
114 int bssid_changed;
115
116 #ifdef CONFIG_IBSS_RSN
117 ibss_rsn_deinit(wpa_s->ibss_rsn);
118 wpa_s->ibss_rsn = NULL;
119 #endif /* CONFIG_IBSS_RSN */
120
121 #ifdef CONFIG_AP
122 wpa_supplicant_ap_deinit(wpa_s);
123 #endif /* CONFIG_AP */
124
125 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
126 return;
127
128 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
129 wpa_s->conf->ap_scan = DEFAULT_AP_SCAN;
130 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
131 os_memset(wpa_s->bssid, 0, ETH_ALEN);
132 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
133 wpa_s->current_bss = NULL;
134 wpa_s->assoc_freq = 0;
135 #ifdef CONFIG_IEEE80211R
136 #ifdef CONFIG_SME
137 if (wpa_s->sme.ft_ies)
138 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
139 #endif /* CONFIG_SME */
140 #endif /* CONFIG_IEEE80211R */
141
142 if (bssid_changed)
143 wpas_notify_bssid_changed(wpa_s);
144
145 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
146 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
147 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
148 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
149 wpa_s->ap_ies_from_associnfo = 0;
150 }
151
152
wpa_find_assoc_pmkid(struct wpa_supplicant * wpa_s)153 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
154 {
155 struct wpa_ie_data ie;
156 int pmksa_set = -1;
157 size_t i;
158
159 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
160 ie.pmkid == NULL)
161 return;
162
163 for (i = 0; i < ie.num_pmkid; i++) {
164 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
165 ie.pmkid + i * PMKID_LEN,
166 NULL, NULL, 0);
167 if (pmksa_set == 0) {
168 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
169 break;
170 }
171 }
172
173 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
174 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
175 }
176
177
wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant * wpa_s,union wpa_event_data * data)178 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
179 union wpa_event_data *data)
180 {
181 if (data == NULL) {
182 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
183 "event");
184 return;
185 }
186 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
187 " index=%d preauth=%d",
188 MAC2STR(data->pmkid_candidate.bssid),
189 data->pmkid_candidate.index,
190 data->pmkid_candidate.preauth);
191
192 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
193 data->pmkid_candidate.index,
194 data->pmkid_candidate.preauth);
195 }
196
197
wpa_supplicant_dynamic_keys(struct wpa_supplicant * wpa_s)198 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
199 {
200 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
201 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
202 return 0;
203
204 #ifdef IEEE8021X_EAPOL
205 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
206 wpa_s->current_ssid &&
207 !(wpa_s->current_ssid->eapol_flags &
208 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
209 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
210 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
211 * plaintext or static WEP keys). */
212 return 0;
213 }
214 #endif /* IEEE8021X_EAPOL */
215
216 return 1;
217 }
218
219
220 /**
221 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
222 * @wpa_s: pointer to wpa_supplicant data
223 * @ssid: Configuration data for the network
224 * Returns: 0 on success, -1 on failure
225 *
226 * This function is called when starting authentication with a network that is
227 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
228 */
wpa_supplicant_scard_init(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)229 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
230 struct wpa_ssid *ssid)
231 {
232 #ifdef IEEE8021X_EAPOL
233 int aka = 0, sim = 0, type;
234
235 if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
236 return 0;
237
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 }
254
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;
259
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 }
266
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;
275
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 /* IEEE8021X_EAPOL */
285
286 return 0;
287 }
288
289
290 #ifndef CONFIG_NO_SCAN_PROCESSING
wpa_supplicant_match_privacy(struct wpa_scan_res * bss,struct wpa_ssid * ssid)291 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
292 struct wpa_ssid *ssid)
293 {
294 int i, privacy = 0;
295
296 if (ssid->mixed_cell)
297 return 1;
298
299 #ifdef CONFIG_WPS
300 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
301 return 1;
302 #endif /* CONFIG_WPS */
303
304 for (i = 0; i < NUM_WEP_KEYS; i++) {
305 if (ssid->wep_key_len[i]) {
306 privacy = 1;
307 break;
308 }
309 }
310 #ifdef IEEE8021X_EAPOL
311 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
312 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
313 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
314 privacy = 1;
315 #endif /* IEEE8021X_EAPOL */
316
317 if (wpa_key_mgmt_wpa(ssid->key_mgmt))
318 privacy = 1;
319
320 if (bss->caps & IEEE80211_CAP_PRIVACY)
321 return privacy;
322 return !privacy;
323 }
324
325
wpa_supplicant_ssid_bss_match(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct wpa_scan_res * bss)326 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
327 struct wpa_ssid *ssid,
328 struct wpa_scan_res *bss)
329 {
330 struct wpa_ie_data ie;
331 int proto_match = 0;
332 const u8 *rsn_ie, *wpa_ie;
333 int ret;
334 int wep_ok;
335
336 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
337 if (ret >= 0)
338 return ret;
339
340 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
341 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
342 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
343 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
344 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
345
346 rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
347 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
348 proto_match++;
349
350 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
351 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
352 "failed");
353 break;
354 }
355
356 if (wep_ok &&
357 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
358 {
359 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
360 "in RSN IE");
361 return 1;
362 }
363
364 if (!(ie.proto & ssid->proto)) {
365 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
366 "mismatch");
367 break;
368 }
369
370 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
371 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
372 "cipher mismatch");
373 break;
374 }
375
376 if (!(ie.group_cipher & ssid->group_cipher)) {
377 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
378 "cipher mismatch");
379 break;
380 }
381
382 if (!(ie.key_mgmt & ssid->key_mgmt)) {
383 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
384 "mismatch");
385 break;
386 }
387
388 #ifdef CONFIG_IEEE80211W
389 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
390 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
391 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
392 "frame protection");
393 break;
394 }
395 #endif /* CONFIG_IEEE80211W */
396
397 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
398 return 1;
399 }
400
401 wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
402 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
403 proto_match++;
404
405 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
406 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
407 "failed");
408 break;
409 }
410
411 if (wep_ok &&
412 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
413 {
414 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
415 "in WPA IE");
416 return 1;
417 }
418
419 if (!(ie.proto & ssid->proto)) {
420 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
421 "mismatch");
422 break;
423 }
424
425 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
426 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
427 "cipher mismatch");
428 break;
429 }
430
431 if (!(ie.group_cipher & ssid->group_cipher)) {
432 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
433 "cipher mismatch");
434 break;
435 }
436
437 if (!(ie.key_mgmt & ssid->key_mgmt)) {
438 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
439 "mismatch");
440 break;
441 }
442
443 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
444 return 1;
445 }
446
447 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
448 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
449 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
450 return 0;
451 }
452
453 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
454 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
455 return 1;
456 }
457
458 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with "
459 "WPA/WPA2");
460
461 return 0;
462 }
463
464
freq_allowed(int * freqs,int freq)465 static int freq_allowed(int *freqs, int freq)
466 {
467 int i;
468
469 if (freqs == NULL)
470 return 1;
471
472 for (i = 0; freqs[i]; i++)
473 if (freqs[i] == freq)
474 return 1;
475 return 0;
476 }
477
478
wpa_scan_res_match(struct wpa_supplicant * wpa_s,int i,struct wpa_scan_res * bss,struct wpa_ssid * group)479 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
480 int i, struct wpa_scan_res *bss,
481 struct wpa_ssid *group)
482 {
483 const u8 *ssid_;
484 u8 wpa_ie_len, rsn_ie_len, ssid_len;
485 int wpa;
486 struct wpa_blacklist *e;
487 const u8 *ie;
488 struct wpa_ssid *ssid;
489
490 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
491 ssid_ = ie ? ie + 2 : (u8 *) "";
492 ssid_len = ie ? ie[1] : 0;
493
494 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
495 wpa_ie_len = ie ? ie[1] : 0;
496
497 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
498 rsn_ie_len = ie ? ie[1] : 0;
499
500 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
501 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
502 i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
503 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
504 wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
505
506 e = wpa_blacklist_get(wpa_s, bss->bssid);
507 if (e) {
508 int limit = 1;
509 if (wpa_supplicant_enabled_networks(wpa_s->conf) == 1) {
510 /*
511 * When only a single network is enabled, we can
512 * trigger blacklisting on the first failure. This
513 * should not be done with multiple enabled networks to
514 * avoid getting forced to move into a worse ESS on
515 * single error if there are no other BSSes of the
516 * current ESS.
517 */
518 limit = 0;
519 }
520 if (e->count > limit) {
521 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
522 "(count=%d limit=%d)", e->count, limit);
523 return NULL;
524 }
525 }
526
527 if (ssid_len == 0) {
528 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
529 return NULL;
530 }
531
532 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
533
534 for (ssid = group; ssid; ssid = ssid->pnext) {
535 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
536
537 if (ssid->disabled) {
538 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
539 continue;
540 }
541
542 #ifdef CONFIG_WPS
543 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
544 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
545 "(WPS)");
546 continue;
547 }
548
549 if (wpa && ssid->ssid_len == 0 &&
550 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
551 check_ssid = 0;
552
553 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
554 /* Only allow wildcard SSID match if an AP
555 * advertises active WPS operation that matches
556 * with our mode. */
557 check_ssid = 1;
558 if (ssid->ssid_len == 0 &&
559 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
560 check_ssid = 0;
561 }
562 #endif /* CONFIG_WPS */
563
564 if (check_ssid &&
565 (ssid_len != ssid->ssid_len ||
566 os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
567 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
568 continue;
569 }
570
571 if (ssid->bssid_set &&
572 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
573 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
574 continue;
575 }
576
577 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
578 continue;
579
580 if (!wpa &&
581 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
582 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
583 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
584 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
585 "not allowed");
586 continue;
587 }
588
589 if (!wpa_supplicant_match_privacy(bss, ssid)) {
590 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
591 "mismatch");
592 continue;
593 }
594
595 if (bss->caps & IEEE80211_CAP_IBSS) {
596 wpa_dbg(wpa_s, MSG_DEBUG, " skip - IBSS (adhoc) "
597 "network");
598 continue;
599 }
600
601 if (!freq_allowed(ssid->freq_list, bss->freq)) {
602 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
603 "allowed");
604 continue;
605 }
606
607 #ifdef CONFIG_P2P
608 /*
609 * TODO: skip the AP if its P2P IE has Group Formation
610 * bit set in the P2P Group Capability Bitmap and we
611 * are not in Group Formation with that device.
612 */
613 #endif /* CONFIG_P2P */
614
615 /* Matching configuration found */
616 return ssid;
617 }
618
619 /* No matching configuration found */
620 return NULL;
621 }
622
623
624 static struct wpa_bss *
wpa_supplicant_select_bss(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res,struct wpa_ssid * group,struct wpa_ssid ** selected_ssid)625 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
626 struct wpa_scan_results *scan_res,
627 struct wpa_ssid *group,
628 struct wpa_ssid **selected_ssid)
629 {
630 size_t i;
631
632 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
633 group->priority);
634
635 for (i = 0; i < scan_res->num; i++) {
636 struct wpa_scan_res *bss = scan_res->res[i];
637 const u8 *ie, *ssid;
638 u8 ssid_len;
639
640 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
641 if (!*selected_ssid)
642 continue;
643
644 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
645 ssid = ie ? ie + 2 : (u8 *) "";
646 ssid_len = ie ? ie[1] : 0;
647
648 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
649 " ssid='%s'",
650 MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
651 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
652 }
653
654 return NULL;
655 }
656
657
658 static struct wpa_bss *
wpa_supplicant_pick_network(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res,struct wpa_ssid ** selected_ssid)659 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
660 struct wpa_scan_results *scan_res,
661 struct wpa_ssid **selected_ssid)
662 {
663 struct wpa_bss *selected = NULL;
664 int prio;
665
666 while (selected == NULL) {
667 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
668 selected = wpa_supplicant_select_bss(
669 wpa_s, scan_res, wpa_s->conf->pssid[prio],
670 selected_ssid);
671 if (selected)
672 break;
673 }
674
675 if (selected == NULL && wpa_s->blacklist) {
676 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
677 "blacklist and try again");
678 wpa_blacklist_clear(wpa_s);
679 wpa_s->blacklist_cleared++;
680 } else if (selected == NULL)
681 break;
682 }
683
684 return selected;
685 }
686
687
wpa_supplicant_req_new_scan(struct wpa_supplicant * wpa_s,int timeout_sec,int timeout_usec)688 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
689 int timeout_sec, int timeout_usec)
690 {
691 if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
692 /*
693 * No networks are enabled; short-circuit request so
694 * we don't wait timeout seconds before transitioning
695 * to INACTIVE state.
696 */
697 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
698 return;
699 }
700 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
701 }
702
703 #ifdef ANDROID_BRCM_P2P_PATCH
wpa_supplicant_connect(struct wpa_supplicant * wpa_s,struct wpa_bss * selected,struct wpa_ssid * ssid)704 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
705 #else
706 void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
707 #endif /* ANDROID_BRCM_P2P_PATCH */
708 struct wpa_bss *selected,
709 struct wpa_ssid *ssid)
710 {
711 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
712 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
713 "PBC session overlap");
714 #ifdef CONFIG_P2P
715 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1) {
716 #ifdef ANDROID_BRCM_P2P_PATCH
717 return -1;
718 #else
719 return;
720 #endif
721 }
722 #endif /* CONFIG_P2P */
723
724 #ifdef CONFIG_WPS
725 wpas_wps_cancel(wpa_s);
726 #endif /* CONFIG_WPS */
727 #ifdef ANDROID_BRCM_P2P_PATCH
728 return -1;
729 #else
730 return;
731 #endif /* ANDROID_BRCM_P2P_PATCH */
732 }
733
734 /*
735 * Do not trigger new association unless the BSSID has changed or if
736 * reassociation is requested. If we are in process of associating with
737 * the selected BSSID, do not trigger new attempt.
738 */
739 if ((wpa_s->reassociate
740 #ifdef ANDROID_BRCM_P2P_PATCH
741 && (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0)
742 && (wpa_s->wpa_state != WPA_COMPLETED)
743 #endif
744 )||
745 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
746 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
747 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
748 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
749 0))) {
750 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
751 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
752 #ifdef ANDROID_BRCM_P2P_PATCH
753 return 0;
754 #else
755 return;
756 #endif
757 }
758 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
759 "reassociate: %d selected: "MACSTR " bssid: " MACSTR
760 " pending: " MACSTR " wpa_state: %s",
761 wpa_s->reassociate, MAC2STR(selected->bssid),
762 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
763 wpa_supplicant_state_txt(wpa_s->wpa_state));
764 wpa_supplicant_associate(wpa_s, selected, ssid);
765 } else {
766 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
767 "selected AP");
768 }
769 #ifdef ANDROID_BRCM_P2P_PATCH
770 return 0;
771 #endif
772 }
773
774
775 static struct wpa_ssid *
wpa_supplicant_pick_new_network(struct wpa_supplicant * wpa_s)776 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
777 {
778 int prio;
779 struct wpa_ssid *ssid;
780
781 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
782 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
783 {
784 if (ssid->disabled)
785 continue;
786 if (ssid->mode == IEEE80211_MODE_IBSS ||
787 ssid->mode == IEEE80211_MODE_AP)
788 return ssid;
789 }
790 }
791 return NULL;
792 }
793
794
795 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
796 * on BSS added and BSS changed events */
wpa_supplicant_rsn_preauth_scan_results(struct wpa_supplicant * wpa_s)797 static void wpa_supplicant_rsn_preauth_scan_results(
798 struct wpa_supplicant *wpa_s)
799 {
800 struct wpa_bss *bss;
801
802 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
803 return;
804
805 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
806 const u8 *ssid, *rsn;
807
808 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
809 if (ssid == NULL)
810 continue;
811
812 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
813 if (rsn == NULL)
814 continue;
815
816 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
817 }
818
819 }
820
821
wpa_supplicant_need_to_roam(struct wpa_supplicant * wpa_s,struct wpa_bss * selected,struct wpa_ssid * ssid,struct wpa_scan_results * scan_res)822 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
823 struct wpa_bss *selected,
824 struct wpa_ssid *ssid,
825 struct wpa_scan_results *scan_res)
826 {
827 size_t i;
828 struct wpa_scan_res *current_bss = NULL;
829 int min_diff;
830
831 if (wpa_s->reassociate)
832 return 1; /* explicit request to reassociate */
833 if (wpa_s->wpa_state < WPA_ASSOCIATED)
834 return 1; /* we are not associated; continue */
835 if (wpa_s->current_ssid == NULL)
836 return 1; /* unknown current SSID */
837 if (wpa_s->current_ssid != ssid)
838 return 1; /* different network block */
839
840 for (i = 0; i < scan_res->num; i++) {
841 struct wpa_scan_res *res = scan_res->res[i];
842 const u8 *ie;
843 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
844 continue;
845
846 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
847 if (ie == NULL)
848 continue;
849 if (ie[1] != wpa_s->current_ssid->ssid_len ||
850 os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
851 continue;
852 current_bss = res;
853 break;
854 }
855
856 if (!current_bss)
857 return 1; /* current BSS not seen in scan results */
858
859 #ifdef CONFIG_ROAMING
860 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
861 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
862 MAC2STR(current_bss->bssid), current_bss->level);
863 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
864 MAC2STR(selected->bssid), selected->level);
865
866 if (wpa_s->current_ssid->bssid_set &&
867 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
868 0) {
869 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
870 "has preferred BSSID");
871 return 1;
872 }
873
874 min_diff = 2;
875 if (current_bss->level < 0) {
876 if (current_bss->level < -85)
877 min_diff = 1;
878 else if (current_bss->level < -80)
879 min_diff = 2;
880 else if (current_bss->level < -75)
881 min_diff = 3;
882 else if (current_bss->level < -70)
883 min_diff = 4;
884 else
885 min_diff = 5;
886 }
887 if (abs(current_bss->level - selected->level) < min_diff) {
888 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
889 "in signal level");
890 return 0;
891 }
892
893 return 1;
894 #else
895 return 0;
896 #endif
897 }
898
899 /* Return < 0 if no scan results could be fetched. */
_wpa_supplicant_event_scan_results(struct wpa_supplicant * wpa_s,union wpa_event_data * data)900 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
901 union wpa_event_data *data)
902 {
903 struct wpa_bss *selected;
904 struct wpa_ssid *ssid = NULL;
905 struct wpa_scan_results *scan_res;
906 int ap = 0;
907
908 #ifdef CONFIG_AP
909 if (wpa_s->ap_iface)
910 ap = 1;
911 #endif /* CONFIG_AP */
912
913 wpa_supplicant_notify_scanning(wpa_s, 0);
914
915 scan_res = wpa_supplicant_get_scan_results(wpa_s,
916 data ? &data->scan_info :
917 NULL, 1);
918 if (scan_res == NULL) {
919 if (wpa_s->conf->ap_scan == 2 || ap)
920 return -1;
921 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
922 "scanning again");
923 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
924 return -1;
925 }
926
927 #ifndef CONFIG_NO_RANDOM_POOL
928 size_t i, num;
929 num = scan_res->num;
930 if (num > 10)
931 num = 10;
932 for (i = 0; i < num; i++) {
933 u8 buf[5];
934 struct wpa_scan_res *res = scan_res->res[i];
935 buf[0] = res->bssid[5];
936 buf[1] = res->qual & 0xff;
937 buf[2] = res->noise & 0xff;
938 buf[3] = res->level & 0xff;
939 buf[4] = res->tsf & 0xff;
940 random_add_randomness(buf, sizeof(buf));
941 }
942 #endif /* CONFIG_NO_RANDOM_POOL */
943
944 if (wpa_s->scan_res_handler) {
945 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
946 struct wpa_scan_results *scan_res);
947
948 scan_res_handler = wpa_s->scan_res_handler;
949 wpa_s->scan_res_handler = NULL;
950 scan_res_handler(wpa_s, scan_res);
951
952 wpa_scan_results_free(scan_res);
953 return 0;
954 }
955
956 if (ap) {
957 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
958 #ifdef CONFIG_AP
959 if (wpa_s->ap_iface->scan_cb)
960 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
961 #endif /* CONFIG_AP */
962 wpa_scan_results_free(scan_res);
963 return 0;
964 }
965
966 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
967 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
968 wpas_notify_scan_results(wpa_s);
969
970 wpas_notify_scan_done(wpa_s, 1);
971
972 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
973 wpa_scan_results_free(scan_res);
974 return 0;
975 }
976
977 if (wpa_s->disconnected) {
978 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
979 wpa_scan_results_free(scan_res);
980 return 0;
981 }
982
983 if (bgscan_notify_scan(wpa_s, scan_res) == 1) {
984 wpa_scan_results_free(scan_res);
985 return 0;
986 }
987
988 selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
989
990 if (selected) {
991 int skip;
992 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
993 scan_res);
994 wpa_scan_results_free(scan_res);
995 if (skip)
996 return 0;
997 #ifdef ANDROID_BRCM_P2P_PATCH
998 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
999 wpa_dbg(wpa_s, MSG_DEBUG, "Connect Failed");
1000 return -1;
1001 }
1002 #else
1003 wpa_supplicant_connect(wpa_s, selected, ssid);
1004 #endif
1005 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1006 } else {
1007 wpa_scan_results_free(scan_res);
1008 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1009 ssid = wpa_supplicant_pick_new_network(wpa_s);
1010 if (ssid) {
1011 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1012 wpa_supplicant_associate(wpa_s, NULL, ssid);
1013 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1014 } else {
1015 int timeout_sec = wpa_s->scan_interval;
1016 int timeout_usec = 0;
1017 #ifdef CONFIG_P2P
1018 if (wpa_s->p2p_in_provisioning) {
1019 /*
1020 * Use shorter wait during P2P Provisioning
1021 * state to speed up group formation.
1022 */
1023 timeout_sec = 0;
1024 timeout_usec = 250000;
1025 }
1026 #endif /* CONFIG_P2P */
1027 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1028 timeout_usec);
1029 }
1030 }
1031 return 0;
1032 }
1033
1034
wpa_supplicant_event_scan_results(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1035 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1036 union wpa_event_data *data)
1037 {
1038 const char *rn, *rn2;
1039 struct wpa_supplicant *ifs;
1040
1041 if (_wpa_supplicant_event_scan_results(wpa_s, data) < 0) {
1042 /*
1043 * If no scan results could be fetched, then no need to
1044 * notify those interfaces that did not actually request
1045 * this scan.
1046 */
1047 return;
1048 }
1049
1050 /*
1051 * Check other interfaces to see if they have the same radio-name. If
1052 * so, they get updated with this same scan info.
1053 */
1054 if (!wpa_s->driver->get_radio_name)
1055 return;
1056
1057 rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1058 if (rn == NULL || rn[0] == '\0')
1059 return;
1060
1061 wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1062 "sharing same radio (%s) in event_scan_results", rn);
1063
1064 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1065 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1066 continue;
1067
1068 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1069 if (rn2 && os_strcmp(rn, rn2) == 0) {
1070 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1071 "sibling", ifs->ifname);
1072 _wpa_supplicant_event_scan_results(ifs, data);
1073 }
1074 }
1075 }
1076
1077 #endif /* CONFIG_NO_SCAN_PROCESSING */
1078
1079
wpa_supplicant_event_associnfo(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1080 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1081 union wpa_event_data *data)
1082 {
1083 int l, len, found = 0, wpa_found, rsn_found;
1084 const u8 *p;
1085
1086 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1087 if (data->assoc_info.req_ies)
1088 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1089 data->assoc_info.req_ies_len);
1090 if (data->assoc_info.resp_ies) {
1091 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1092 data->assoc_info.resp_ies_len);
1093 #ifdef CONFIG_TDLS
1094 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1095 data->assoc_info.resp_ies_len);
1096 #endif /* CONFIG_TDLS */
1097 }
1098 if (data->assoc_info.beacon_ies)
1099 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1100 data->assoc_info.beacon_ies,
1101 data->assoc_info.beacon_ies_len);
1102 if (data->assoc_info.freq)
1103 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1104 data->assoc_info.freq);
1105
1106 p = data->assoc_info.req_ies;
1107 l = data->assoc_info.req_ies_len;
1108
1109 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1110 while (p && l >= 2) {
1111 len = p[1] + 2;
1112 if (len > l) {
1113 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1114 p, l);
1115 break;
1116 }
1117 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1118 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1119 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1120 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1121 break;
1122 found = 1;
1123 wpa_find_assoc_pmkid(wpa_s);
1124 break;
1125 }
1126 l -= len;
1127 p += len;
1128 }
1129 if (!found && data->assoc_info.req_ies)
1130 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1131
1132 #ifdef CONFIG_IEEE80211R
1133 #ifdef CONFIG_SME
1134 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1135 u8 bssid[ETH_ALEN];
1136 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1137 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1138 data->assoc_info.resp_ies,
1139 data->assoc_info.resp_ies_len,
1140 bssid) < 0) {
1141 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1142 "Reassociation Response failed");
1143 wpa_supplicant_deauthenticate(
1144 wpa_s, WLAN_REASON_INVALID_IE);
1145 return -1;
1146 }
1147 }
1148
1149 p = data->assoc_info.resp_ies;
1150 l = data->assoc_info.resp_ies_len;
1151
1152 #ifdef CONFIG_WPS_STRICT
1153 if (p && wpa_s->current_ssid &&
1154 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1155 struct wpabuf *wps;
1156 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1157 if (wps == NULL) {
1158 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1159 "include WPS IE in (Re)Association Response");
1160 return -1;
1161 }
1162
1163 if (wps_validate_assoc_resp(wps) < 0) {
1164 wpabuf_free(wps);
1165 wpa_supplicant_deauthenticate(
1166 wpa_s, WLAN_REASON_INVALID_IE);
1167 return -1;
1168 }
1169 wpabuf_free(wps);
1170 }
1171 #endif /* CONFIG_WPS_STRICT */
1172
1173 /* Go through the IEs and make a copy of the MDIE, if present. */
1174 while (p && l >= 2) {
1175 len = p[1] + 2;
1176 if (len > l) {
1177 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1178 p, l);
1179 break;
1180 }
1181 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1182 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1183 wpa_s->sme.ft_used = 1;
1184 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1185 MOBILITY_DOMAIN_ID_LEN);
1186 break;
1187 }
1188 l -= len;
1189 p += len;
1190 }
1191 #endif /* CONFIG_SME */
1192
1193 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1194 data->assoc_info.resp_ies_len);
1195 #endif /* CONFIG_IEEE80211R */
1196
1197 /* WPA/RSN IE from Beacon/ProbeResp */
1198 p = data->assoc_info.beacon_ies;
1199 l = data->assoc_info.beacon_ies_len;
1200
1201 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1202 */
1203 wpa_found = rsn_found = 0;
1204 while (p && l >= 2) {
1205 len = p[1] + 2;
1206 if (len > l) {
1207 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1208 p, l);
1209 break;
1210 }
1211 if (!wpa_found &&
1212 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1213 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1214 wpa_found = 1;
1215 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1216 }
1217
1218 if (!rsn_found &&
1219 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1220 rsn_found = 1;
1221 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1222 }
1223
1224 l -= len;
1225 p += len;
1226 }
1227
1228 if (!wpa_found && data->assoc_info.beacon_ies)
1229 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1230 if (!rsn_found && data->assoc_info.beacon_ies)
1231 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1232 if (wpa_found || rsn_found)
1233 wpa_s->ap_ies_from_associnfo = 1;
1234
1235 if (wpa_s->assoc_freq && data->assoc_info.freq &&
1236 wpa_s->assoc_freq != data->assoc_info.freq) {
1237 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1238 "%u to %u MHz",
1239 wpa_s->assoc_freq, data->assoc_info.freq);
1240 wpa_supplicant_update_scan_results(wpa_s);
1241 }
1242
1243 wpa_s->assoc_freq = data->assoc_info.freq;
1244
1245 return 0;
1246 }
1247
1248
wpa_supplicant_event_assoc(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1249 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1250 union wpa_event_data *data)
1251 {
1252 u8 bssid[ETH_ALEN];
1253 int ft_completed;
1254 int bssid_changed;
1255 struct wpa_driver_capa capa;
1256
1257 #ifdef CONFIG_AP
1258 if (wpa_s->ap_iface) {
1259 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1260 data->assoc_info.addr,
1261 data->assoc_info.req_ies,
1262 data->assoc_info.req_ies_len,
1263 data->assoc_info.reassoc);
1264 return;
1265 }
1266 #endif /* CONFIG_AP */
1267
1268 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1269 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1270 return;
1271
1272 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1273 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1274 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1275 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
1276 (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1277 os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
1278 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1279 MACSTR, MAC2STR(bssid));
1280 random_add_randomness(bssid, ETH_ALEN);
1281 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1282 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1283 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1284 if (bssid_changed)
1285 wpas_notify_bssid_changed(wpa_s);
1286
1287 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1288 wpa_clear_keys(wpa_s, bssid);
1289 }
1290 if (wpa_supplicant_select_config(wpa_s) < 0) {
1291 wpa_supplicant_disassociate(
1292 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1293 return;
1294 }
1295 if (wpa_s->current_ssid) {
1296 struct wpa_bss *bss = NULL;
1297 struct wpa_ssid *ssid = wpa_s->current_ssid;
1298 if (ssid->ssid_len > 0)
1299 bss = wpa_bss_get(wpa_s, bssid,
1300 ssid->ssid, ssid->ssid_len);
1301 if (!bss)
1302 bss = wpa_bss_get_bssid(wpa_s, bssid);
1303 if (bss)
1304 wpa_s->current_bss = bss;
1305 }
1306 }
1307
1308 #ifdef CONFIG_SME
1309 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1310 wpa_s->sme.prev_bssid_set = 1;
1311 #endif /* CONFIG_SME */
1312
1313 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1314 if (wpa_s->current_ssid) {
1315 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1316 * initialized before association, but for other modes,
1317 * initialize PC/SC here, if the current configuration needs
1318 * smartcard or SIM/USIM. */
1319 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1320 }
1321 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1322 if (wpa_s->l2)
1323 l2_packet_notify_auth_start(wpa_s->l2);
1324
1325 /*
1326 * Set portEnabled first to FALSE in order to get EAP state machine out
1327 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1328 * state machine may transit to AUTHENTICATING state based on obsolete
1329 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1330 * AUTHENTICATED without ever giving chance to EAP state machine to
1331 * reset the state.
1332 */
1333 if (!ft_completed) {
1334 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1335 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1336 }
1337 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1338 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1339 /* 802.1X::portControl = Auto */
1340 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1341 wpa_s->eapol_received = 0;
1342 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1343 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1344 (wpa_s->current_ssid &&
1345 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1346 wpa_supplicant_cancel_auth_timeout(wpa_s);
1347 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1348 } else if (!ft_completed) {
1349 /* Timeout for receiving the first EAPOL packet */
1350 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1351 }
1352 wpa_supplicant_cancel_scan(wpa_s);
1353
1354 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1355 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1356 /*
1357 * We are done; the driver will take care of RSN 4-way
1358 * handshake.
1359 */
1360 wpa_supplicant_cancel_auth_timeout(wpa_s);
1361 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1362 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1363 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1364 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1365 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1366 /*
1367 * The driver will take care of RSN 4-way handshake, so we need
1368 * to allow EAPOL supplicant to complete its work without
1369 * waiting for WPA supplicant.
1370 */
1371 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1372 } else if (ft_completed) {
1373 /*
1374 * FT protocol completed - make sure EAPOL state machine ends
1375 * up in authenticated.
1376 */
1377 wpa_supplicant_cancel_auth_timeout(wpa_s);
1378 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1379 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1380 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1381 }
1382
1383 if (wpa_s->pending_eapol_rx) {
1384 struct os_time now, age;
1385 os_get_time(&now);
1386 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1387 if (age.sec == 0 && age.usec < 100000 &&
1388 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1389 0) {
1390 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1391 "frame that was received just before "
1392 "association notification");
1393 wpa_supplicant_rx_eapol(
1394 wpa_s, wpa_s->pending_eapol_rx_src,
1395 wpabuf_head(wpa_s->pending_eapol_rx),
1396 wpabuf_len(wpa_s->pending_eapol_rx));
1397 }
1398 wpabuf_free(wpa_s->pending_eapol_rx);
1399 wpa_s->pending_eapol_rx = NULL;
1400 }
1401
1402 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1403 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1404 wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1405 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1406 /* Set static WEP keys again */
1407 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1408 }
1409
1410 #ifdef CONFIG_IBSS_RSN
1411 if (wpa_s->current_ssid &&
1412 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1413 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1414 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1415 wpa_s->ibss_rsn == NULL) {
1416 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1417 if (!wpa_s->ibss_rsn) {
1418 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1419 wpa_supplicant_deauthenticate(
1420 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1421 return;
1422 }
1423
1424 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1425 }
1426 #endif /* CONFIG_IBSS_RSN */
1427 }
1428
1429
wpa_supplicant_event_disassoc(struct wpa_supplicant * wpa_s,u16 reason_code)1430 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1431 u16 reason_code)
1432 {
1433 const u8 *bssid;
1434 int authenticating;
1435 u8 prev_pending_bssid[ETH_ALEN];
1436
1437 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1438 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1439
1440 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1441 /*
1442 * At least Host AP driver and a Prism3 card seemed to be
1443 * generating streams of disconnected events when configuring
1444 * IBSS for WPA-None. Ignore them for now.
1445 */
1446 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1447 "IBSS/WPA-None mode");
1448 return;
1449 }
1450
1451 if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1452 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1453 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1454 "pre-shared key may be incorrect");
1455 }
1456 if (!wpa_s->auto_reconnect_disabled ||
1457 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1458 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect enabled: try to "
1459 "reconnect (wps=%d)",
1460 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS);
1461 if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1462 wpa_supplicant_req_scan(wpa_s, 0, 500000);
1463 } else {
1464 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect disabled: do not "
1465 "try to re-connect");
1466 wpa_s->reassociate = 0;
1467 wpa_s->disconnected = 1;
1468 }
1469 bssid = wpa_s->bssid;
1470 if (is_zero_ether_addr(bssid))
1471 bssid = wpa_s->pending_bssid;
1472 wpas_connection_failed(wpa_s, bssid);
1473 wpa_sm_notify_disassoc(wpa_s->wpa);
1474 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1475 " reason=%d",
1476 MAC2STR(bssid), reason_code);
1477 if (wpa_supplicant_dynamic_keys(wpa_s)) {
1478 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1479 wpa_s->keys_cleared = 0;
1480 wpa_clear_keys(wpa_s, wpa_s->bssid);
1481 }
1482 wpa_supplicant_mark_disassoc(wpa_s);
1483
1484 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1485 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1486 }
1487
1488
1489 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
wpa_supplicant_delayed_mic_error_report(void * eloop_ctx,void * sock_ctx)1490 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1491 void *sock_ctx)
1492 {
1493 struct wpa_supplicant *wpa_s = eloop_ctx;
1494
1495 if (!wpa_s->pending_mic_error_report)
1496 return;
1497
1498 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1499 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1500 wpa_s->pending_mic_error_report = 0;
1501 }
1502 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1503
1504
1505 static void
wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1506 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1507 union wpa_event_data *data)
1508 {
1509 int pairwise;
1510 struct os_time t;
1511
1512 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1513 pairwise = (data && data->michael_mic_failure.unicast);
1514 os_get_time(&t);
1515 if ((wpa_s->last_michael_mic_error &&
1516 t.sec - wpa_s->last_michael_mic_error <= 60) ||
1517 wpa_s->pending_mic_error_report) {
1518 if (wpa_s->pending_mic_error_report) {
1519 /*
1520 * Send the pending MIC error report immediately since
1521 * we are going to start countermeasures and AP better
1522 * do the same.
1523 */
1524 wpa_sm_key_request(wpa_s->wpa, 1,
1525 wpa_s->pending_mic_error_pairwise);
1526 }
1527
1528 /* Send the new MIC error report immediately since we are going
1529 * to start countermeasures and AP better do the same.
1530 */
1531 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1532
1533 /* initialize countermeasures */
1534 wpa_s->countermeasures = 1;
1535 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1536
1537 /*
1538 * Need to wait for completion of request frame. We do not get
1539 * any callback for the message completion, so just wait a
1540 * short while and hope for the best. */
1541 os_sleep(0, 10000);
1542
1543 wpa_drv_set_countermeasures(wpa_s, 1);
1544 wpa_supplicant_deauthenticate(wpa_s,
1545 WLAN_REASON_MICHAEL_MIC_FAILURE);
1546 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1547 wpa_s, NULL);
1548 eloop_register_timeout(60, 0,
1549 wpa_supplicant_stop_countermeasures,
1550 wpa_s, NULL);
1551 /* TODO: mark the AP rejected for 60 second. STA is
1552 * allowed to associate with another AP.. */
1553 } else {
1554 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1555 if (wpa_s->mic_errors_seen) {
1556 /*
1557 * Reduce the effectiveness of Michael MIC error
1558 * reports as a means for attacking against TKIP if
1559 * more than one MIC failure is noticed with the same
1560 * PTK. We delay the transmission of the reports by a
1561 * random time between 0 and 60 seconds in order to
1562 * force the attacker wait 60 seconds before getting
1563 * the information on whether a frame resulted in a MIC
1564 * failure.
1565 */
1566 u8 rval[4];
1567 int sec;
1568
1569 if (os_get_random(rval, sizeof(rval)) < 0)
1570 sec = os_random() % 60;
1571 else
1572 sec = WPA_GET_BE32(rval) % 60;
1573 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
1574 "report %d seconds", sec);
1575 wpa_s->pending_mic_error_report = 1;
1576 wpa_s->pending_mic_error_pairwise = pairwise;
1577 eloop_cancel_timeout(
1578 wpa_supplicant_delayed_mic_error_report,
1579 wpa_s, NULL);
1580 eloop_register_timeout(
1581 sec, os_random() % 1000000,
1582 wpa_supplicant_delayed_mic_error_report,
1583 wpa_s, NULL);
1584 } else {
1585 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1586 }
1587 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1588 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1589 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1590 }
1591 wpa_s->last_michael_mic_error = t.sec;
1592 wpa_s->mic_errors_seen++;
1593 }
1594
1595
1596 #ifdef CONFIG_TERMINATE_ONLASTIF
any_interfaces(struct wpa_supplicant * head)1597 static int any_interfaces(struct wpa_supplicant *head)
1598 {
1599 struct wpa_supplicant *wpa_s;
1600
1601 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1602 if (!wpa_s->interface_removed)
1603 return 1;
1604 return 0;
1605 }
1606 #endif /* CONFIG_TERMINATE_ONLASTIF */
1607
1608
1609 static void
wpa_supplicant_event_interface_status(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1610 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1611 union wpa_event_data *data)
1612 {
1613 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1614 return;
1615
1616 switch (data->interface_status.ievent) {
1617 case EVENT_INTERFACE_ADDED:
1618 if (!wpa_s->interface_removed)
1619 break;
1620 wpa_s->interface_removed = 0;
1621 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
1622 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1623 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
1624 "driver after interface was added");
1625 }
1626 break;
1627 case EVENT_INTERFACE_REMOVED:
1628 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
1629 wpa_s->interface_removed = 1;
1630 wpa_supplicant_mark_disassoc(wpa_s);
1631 l2_packet_deinit(wpa_s->l2);
1632 wpa_s->l2 = NULL;
1633 #ifdef CONFIG_IBSS_RSN
1634 ibss_rsn_deinit(wpa_s->ibss_rsn);
1635 wpa_s->ibss_rsn = NULL;
1636 #endif /* CONFIG_IBSS_RSN */
1637 #ifdef CONFIG_TERMINATE_ONLASTIF
1638 /* check if last interface */
1639 if (!any_interfaces(wpa_s->global->ifaces))
1640 eloop_terminate();
1641 #endif /* CONFIG_TERMINATE_ONLASTIF */
1642 break;
1643 }
1644 }
1645
1646
1647 #ifdef CONFIG_PEERKEY
1648 static void
wpa_supplicant_event_stkstart(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1649 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1650 union wpa_event_data *data)
1651 {
1652 if (data == NULL)
1653 return;
1654 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1655 }
1656 #endif /* CONFIG_PEERKEY */
1657
1658
1659 #ifdef CONFIG_TDLS
wpa_supplicant_event_tdls(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1660 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
1661 union wpa_event_data *data)
1662 {
1663 if (data == NULL)
1664 return;
1665 switch (data->tdls.oper) {
1666 case TDLS_REQUEST_SETUP:
1667 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
1668 break;
1669 case TDLS_REQUEST_TEARDOWN:
1670 /* request from driver to add FTIE */
1671 wpa_tdls_recv_teardown_notify(wpa_s->wpa, data->tdls.peer,
1672 data->tdls.reason_code);
1673 break;
1674 }
1675 }
1676 #endif /* CONFIG_TDLS */
1677
1678
1679 #ifdef CONFIG_IEEE80211R
1680 static void
wpa_supplicant_event_ft_response(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1681 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1682 union wpa_event_data *data)
1683 {
1684 if (data == NULL)
1685 return;
1686
1687 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1688 data->ft_ies.ies_len,
1689 data->ft_ies.ft_action,
1690 data->ft_ies.target_ap,
1691 data->ft_ies.ric_ies,
1692 data->ft_ies.ric_ies_len) < 0) {
1693 /* TODO: prevent MLME/driver from trying to associate? */
1694 }
1695 }
1696 #endif /* CONFIG_IEEE80211R */
1697
1698
1699 #ifdef CONFIG_IBSS_RSN
wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1700 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1701 union wpa_event_data *data)
1702 {
1703 struct wpa_ssid *ssid;
1704 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1705 return;
1706 if (data == NULL)
1707 return;
1708 ssid = wpa_s->current_ssid;
1709 if (ssid == NULL)
1710 return;
1711 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
1712 return;
1713
1714 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1715 }
1716 #endif /* CONFIG_IBSS_RSN */
1717
1718
1719 #ifdef CONFIG_IEEE80211R
ft_rx_action(struct wpa_supplicant * wpa_s,const u8 * data,size_t len)1720 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1721 size_t len)
1722 {
1723 const u8 *sta_addr, *target_ap_addr;
1724 u16 status;
1725
1726 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1727 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1728 return; /* only SME case supported for now */
1729 if (len < 1 + 2 * ETH_ALEN + 2)
1730 return;
1731 if (data[0] != 2)
1732 return; /* Only FT Action Response is supported for now */
1733 sta_addr = data + 1;
1734 target_ap_addr = data + 1 + ETH_ALEN;
1735 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1736 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
1737 MACSTR " TargetAP " MACSTR " status %u",
1738 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1739
1740 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1741 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1742 " in FT Action Response", MAC2STR(sta_addr));
1743 return;
1744 }
1745
1746 if (status) {
1747 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
1748 "failure (status code %d)", status);
1749 /* TODO: report error to FT code(?) */
1750 return;
1751 }
1752
1753 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1754 len - (1 + 2 * ETH_ALEN + 2), 1,
1755 target_ap_addr, NULL, 0) < 0)
1756 return;
1757
1758 #ifdef CONFIG_SME
1759 {
1760 struct wpa_bss *bss;
1761 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1762 if (bss)
1763 wpa_s->sme.freq = bss->freq;
1764 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1765 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1766 WLAN_AUTH_FT);
1767 }
1768 #endif /* CONFIG_SME */
1769 }
1770 #endif /* CONFIG_IEEE80211R */
1771
1772
wpa_supplicant_event_unprot_deauth(struct wpa_supplicant * wpa_s,struct unprot_deauth * e)1773 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
1774 struct unprot_deauth *e)
1775 {
1776 #ifdef CONFIG_IEEE80211W
1777 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
1778 "dropped: " MACSTR " -> " MACSTR
1779 " (reason code %u)",
1780 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1781 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1782 #endif /* CONFIG_IEEE80211W */
1783 }
1784
1785
wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant * wpa_s,struct unprot_disassoc * e)1786 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
1787 struct unprot_disassoc *e)
1788 {
1789 #ifdef CONFIG_IEEE80211W
1790 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
1791 "dropped: " MACSTR " -> " MACSTR
1792 " (reason code %u)",
1793 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1794 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1795 #endif /* CONFIG_IEEE80211W */
1796 }
1797
1798
wpa_supplicant_event(void * ctx,enum wpa_event_type event,union wpa_event_data * data)1799 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1800 union wpa_event_data *data)
1801 {
1802 struct wpa_supplicant *wpa_s = ctx;
1803 u16 reason_code = 0;
1804
1805 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
1806 event != EVENT_INTERFACE_ENABLED &&
1807 event != EVENT_INTERFACE_STATUS) {
1808 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore event %d while interface is "
1809 "disabled", event);
1810 return;
1811 }
1812
1813 wpa_dbg(wpa_s, MSG_DEBUG, "Event %d received on interface %s",
1814 event, wpa_s->ifname);
1815
1816 switch (event) {
1817 case EVENT_AUTH:
1818 sme_event_auth(wpa_s, data);
1819 break;
1820 case EVENT_ASSOC:
1821 wpa_supplicant_event_assoc(wpa_s, data);
1822 break;
1823 case EVENT_DISASSOC:
1824 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
1825 if (data) {
1826 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1827 data->disassoc_info.reason_code);
1828 if (data->disassoc_info.addr)
1829 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
1830 MAC2STR(data->disassoc_info.addr));
1831 }
1832 #ifdef CONFIG_AP
1833 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
1834 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1835 data->disassoc_info.addr);
1836 break;
1837 }
1838 #endif /* CONFIG_AP */
1839 if (data) {
1840 reason_code = data->disassoc_info.reason_code;
1841 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
1842 data->disassoc_info.ie,
1843 data->disassoc_info.ie_len);
1844 #ifdef CONFIG_P2P
1845 wpas_p2p_disassoc_notif(
1846 wpa_s, data->disassoc_info.addr, reason_code,
1847 data->disassoc_info.ie,
1848 data->disassoc_info.ie_len);
1849 #endif /* CONFIG_P2P */
1850 }
1851 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1852 sme_event_disassoc(wpa_s, data);
1853 /* fall through */
1854 case EVENT_DEAUTH:
1855 if (event == EVENT_DEAUTH) {
1856 wpa_dbg(wpa_s, MSG_DEBUG,
1857 "Deauthentication notification");
1858 if (data) {
1859 reason_code = data->deauth_info.reason_code;
1860 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1861 data->deauth_info.reason_code);
1862 if (data->deauth_info.addr) {
1863 wpa_dbg(wpa_s, MSG_DEBUG, " * address "
1864 MACSTR,
1865 MAC2STR(data->deauth_info.
1866 addr));
1867 }
1868 wpa_hexdump(MSG_DEBUG,
1869 "Deauthentication frame IE(s)",
1870 data->deauth_info.ie,
1871 data->deauth_info.ie_len);
1872 #ifdef CONFIG_P2P
1873 wpas_p2p_deauth_notif(
1874 wpa_s, data->deauth_info.addr,
1875 reason_code,
1876 data->deauth_info.ie,
1877 data->deauth_info.ie_len);
1878 #endif /* CONFIG_P2P */
1879 }
1880 }
1881 #ifdef CONFIG_AP
1882 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
1883 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1884 data->deauth_info.addr);
1885 break;
1886 }
1887 #endif /* CONFIG_AP */
1888 wpa_supplicant_event_disassoc(wpa_s, reason_code);
1889
1890 #if defined(ANDROID_BRCM_P2P_PATCH) && defined(CONFIG_P2P)
1891 wpas_p2p_group_remove_notif(wpa_s, reason_code);
1892 #endif
1893
1894 break;
1895 case EVENT_MICHAEL_MIC_FAILURE:
1896 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1897 break;
1898 #ifndef CONFIG_NO_SCAN_PROCESSING
1899 case EVENT_SCAN_RESULTS:
1900 wpa_supplicant_event_scan_results(wpa_s, data);
1901 break;
1902 #endif /* CONFIG_NO_SCAN_PROCESSING */
1903 case EVENT_ASSOCINFO:
1904 wpa_supplicant_event_associnfo(wpa_s, data);
1905 break;
1906 case EVENT_INTERFACE_STATUS:
1907 wpa_supplicant_event_interface_status(wpa_s, data);
1908 break;
1909 case EVENT_PMKID_CANDIDATE:
1910 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1911 break;
1912 #ifdef CONFIG_PEERKEY
1913 case EVENT_STKSTART:
1914 wpa_supplicant_event_stkstart(wpa_s, data);
1915 break;
1916 #endif /* CONFIG_PEERKEY */
1917 #ifdef CONFIG_TDLS
1918 case EVENT_TDLS:
1919 wpa_supplicant_event_tdls(wpa_s, data);
1920 break;
1921 #endif /* CONFIG_TDLS */
1922 #ifdef CONFIG_IEEE80211R
1923 case EVENT_FT_RESPONSE:
1924 wpa_supplicant_event_ft_response(wpa_s, data);
1925 break;
1926 #endif /* CONFIG_IEEE80211R */
1927 #ifdef CONFIG_IBSS_RSN
1928 case EVENT_IBSS_RSN_START:
1929 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1930 break;
1931 #endif /* CONFIG_IBSS_RSN */
1932 case EVENT_ASSOC_REJECT:
1933 if (data->assoc_reject.bssid)
1934 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
1935 "bssid=" MACSTR " status_code=%u",
1936 MAC2STR(data->assoc_reject.bssid),
1937 data->assoc_reject.status_code);
1938 else
1939 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
1940 "status_code=%u",
1941 data->assoc_reject.status_code);
1942 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1943 sme_event_assoc_reject(wpa_s, data);
1944 break;
1945 case EVENT_AUTH_TIMED_OUT:
1946 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1947 sme_event_auth_timed_out(wpa_s, data);
1948 break;
1949 case EVENT_ASSOC_TIMED_OUT:
1950 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1951 sme_event_assoc_timed_out(wpa_s, data);
1952 break;
1953 #ifdef CONFIG_AP
1954 case EVENT_TX_STATUS:
1955 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
1956 " type=%d stype=%d",
1957 MAC2STR(data->tx_status.dst),
1958 data->tx_status.type, data->tx_status.stype);
1959 if (wpa_s->ap_iface == NULL) {
1960 #ifdef CONFIG_P2P
1961 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1962 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
1963 wpas_send_action_tx_status(
1964 wpa_s, data->tx_status.dst,
1965 data->tx_status.data,
1966 data->tx_status.data_len,
1967 data->tx_status.ack ?
1968 P2P_SEND_ACTION_SUCCESS :
1969 P2P_SEND_ACTION_NO_ACK);
1970 #endif /* CONFIG_P2P */
1971 break;
1972 }
1973 #ifdef CONFIG_P2P
1974 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
1975 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
1976 /*
1977 * Catch TX status events for Action frames we sent via group
1978 * interface in GO mode.
1979 */
1980 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1981 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
1982 os_memcmp(wpa_s->parent->pending_action_dst,
1983 data->tx_status.dst, ETH_ALEN) == 0) {
1984 wpas_send_action_tx_status(
1985 wpa_s->parent, data->tx_status.dst,
1986 data->tx_status.data,
1987 data->tx_status.data_len,
1988 data->tx_status.ack ?
1989 P2P_SEND_ACTION_SUCCESS :
1990 P2P_SEND_ACTION_NO_ACK);
1991 break;
1992 }
1993 #endif /* CONFIG_P2P */
1994 switch (data->tx_status.type) {
1995 case WLAN_FC_TYPE_MGMT:
1996 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
1997 data->tx_status.data_len,
1998 data->tx_status.stype,
1999 data->tx_status.ack);
2000 break;
2001 case WLAN_FC_TYPE_DATA:
2002 ap_tx_status(wpa_s, data->tx_status.dst,
2003 data->tx_status.data,
2004 data->tx_status.data_len,
2005 data->tx_status.ack);
2006 break;
2007 }
2008 break;
2009 case EVENT_RX_FROM_UNKNOWN:
2010 if (wpa_s->ap_iface == NULL)
2011 break;
2012 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
2013 data->rx_from_unknown.len);
2014 break;
2015 case EVENT_RX_MGMT:
2016 if (wpa_s->ap_iface == NULL) {
2017 #ifdef CONFIG_P2P
2018 u16 fc, stype;
2019 const struct ieee80211_mgmt *mgmt;
2020 mgmt = (const struct ieee80211_mgmt *)
2021 data->rx_mgmt.frame;
2022 fc = le_to_host16(mgmt->frame_control);
2023 stype = WLAN_FC_GET_STYPE(fc);
2024 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2025 data->rx_mgmt.frame_len > 24) {
2026 const u8 *src = mgmt->sa;
2027 const u8 *ie = mgmt->u.probe_req.variable;
2028 size_t ie_len = data->rx_mgmt.frame_len -
2029 (mgmt->u.probe_req.variable -
2030 data->rx_mgmt.frame);
2031 #ifdef ANDROID_BRCM_P2P_PATCH
2032 wpa_printf(MSG_DEBUG, "Non-AP: Probe request frame ");
2033 {
2034 /* If we are Go or client, we need not reply the probe reqest on eth0 interface */
2035 struct wpa_supplicant* ifs;
2036 int ignore = 0;
2037 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2038 if ( (ifs->p2p_group_interface == P2P_GROUP_INTERFACE_GO ) ||(ifs->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT )) {
2039 wpa_printf(MSG_DEBUG, "Non-AP: NEERAJKG Ignoring Probe request");
2040 ignore = 1;
2041 break;
2042 }
2043 }
2044 if(ignore)
2045 break;
2046 else
2047 wpa_printf(MSG_DEBUG, "Non-AP: Couln't Ignore Probe request %d", wpa_s->p2p_group_interface);
2048 }
2049 #endif
2050 wpas_p2p_probe_req_rx(wpa_s, src, ie, ie_len);
2051 break;
2052 }
2053 #endif /* CONFIG_P2P */
2054 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2055 "management frame in non-AP mode");
2056 break;
2057 }
2058 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2059 break;
2060 #endif /* CONFIG_AP */
2061 case EVENT_RX_ACTION:
2062 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2063 " Category=%u DataLen=%d freq=%d MHz",
2064 MAC2STR(data->rx_action.sa),
2065 data->rx_action.category, (int) data->rx_action.len,
2066 data->rx_action.freq);
2067 #ifdef CONFIG_IEEE80211R
2068 if (data->rx_action.category == WLAN_ACTION_FT) {
2069 ft_rx_action(wpa_s, data->rx_action.data,
2070 data->rx_action.len);
2071 break;
2072 }
2073 #endif /* CONFIG_IEEE80211R */
2074 #ifdef CONFIG_IEEE80211W
2075 #ifdef CONFIG_SME
2076 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2077 sme_sa_query_rx(wpa_s, data->rx_action.sa,
2078 data->rx_action.data,
2079 data->rx_action.len);
2080 break;
2081 }
2082 #endif /* CONFIG_SME */
2083 #endif /* CONFIG_IEEE80211W */
2084 #ifdef CONFIG_P2P
2085 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2086 data->rx_action.sa,
2087 data->rx_action.bssid,
2088 data->rx_action.category,
2089 data->rx_action.data,
2090 data->rx_action.len, data->rx_action.freq);
2091 #endif /* CONFIG_P2P */
2092 break;
2093 case EVENT_RX_PROBE_REQ:
2094 if (data->rx_probe_req.sa == NULL ||
2095 data->rx_probe_req.ie == NULL)
2096 break;
2097 #ifdef CONFIG_AP
2098 if (wpa_s->ap_iface) {
2099 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2100 data->rx_probe_req.sa,
2101 data->rx_probe_req.ie,
2102 data->rx_probe_req.ie_len);
2103 break;
2104 }
2105 #endif /* CONFIG_AP */
2106 #ifdef CONFIG_P2P
2107 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2108 data->rx_probe_req.ie,
2109 data->rx_probe_req.ie_len);
2110 #endif /* CONFIG_P2P */
2111 break;
2112 #ifdef CONFIG_P2P
2113 case EVENT_REMAIN_ON_CHANNEL:
2114 wpas_p2p_remain_on_channel_cb(
2115 wpa_s, data->remain_on_channel.freq,
2116 data->remain_on_channel.duration);
2117 break;
2118 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2119 wpas_p2p_cancel_remain_on_channel_cb(
2120 wpa_s, data->remain_on_channel.freq);
2121 break;
2122 case EVENT_P2P_DEV_FOUND: {
2123 struct p2p_peer_info peer_info;
2124
2125 os_memset(&peer_info, 0, sizeof(peer_info));
2126 if (data->p2p_dev_found.dev_addr)
2127 os_memcpy(peer_info.p2p_device_addr,
2128 data->p2p_dev_found.dev_addr, ETH_ALEN);
2129 if (data->p2p_dev_found.pri_dev_type)
2130 os_memcpy(peer_info.pri_dev_type,
2131 data->p2p_dev_found.pri_dev_type,
2132 sizeof(peer_info.pri_dev_type));
2133 if (data->p2p_dev_found.dev_name)
2134 os_strlcpy(peer_info.device_name,
2135 data->p2p_dev_found.dev_name,
2136 sizeof(peer_info.device_name));
2137 peer_info.config_methods = data->p2p_dev_found.config_methods;
2138 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2139 peer_info.group_capab = data->p2p_dev_found.group_capab;
2140
2141 /*
2142 * FIX: new_device=1 is not necessarily correct. We should
2143 * maintain a P2P peer database in wpa_supplicant and update
2144 * this information based on whether the peer is truly new.
2145 */
2146 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2147 break;
2148 }
2149 case EVENT_P2P_GO_NEG_REQ_RX:
2150 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2151 data->p2p_go_neg_req_rx.dev_passwd_id);
2152 break;
2153 case EVENT_P2P_GO_NEG_COMPLETED:
2154 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2155 break;
2156 case EVENT_P2P_PROV_DISC_REQUEST:
2157 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2158 data->p2p_prov_disc_req.config_methods,
2159 data->p2p_prov_disc_req.dev_addr,
2160 data->p2p_prov_disc_req.pri_dev_type,
2161 data->p2p_prov_disc_req.dev_name,
2162 data->p2p_prov_disc_req.supp_config_methods,
2163 data->p2p_prov_disc_req.dev_capab,
2164 data->p2p_prov_disc_req.group_capab);
2165 break;
2166 case EVENT_P2P_PROV_DISC_RESPONSE:
2167 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2168 data->p2p_prov_disc_resp.config_methods);
2169 break;
2170 case EVENT_P2P_SD_REQUEST:
2171 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2172 data->p2p_sd_req.sa,
2173 data->p2p_sd_req.dialog_token,
2174 data->p2p_sd_req.update_indic,
2175 data->p2p_sd_req.tlvs,
2176 data->p2p_sd_req.tlvs_len);
2177 break;
2178 case EVENT_P2P_SD_RESPONSE:
2179 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2180 data->p2p_sd_resp.update_indic,
2181 data->p2p_sd_resp.tlvs,
2182 data->p2p_sd_resp.tlvs_len);
2183 break;
2184 #endif /* CONFIG_P2P */
2185 #ifdef CONFIG_CLIENT_MLME
2186 case EVENT_MLME_RX: {
2187 struct ieee80211_rx_status rx_status;
2188 os_memset(&rx_status, 0, sizeof(rx_status));
2189 rx_status.freq = data->mlme_rx.freq;
2190 rx_status.channel = data->mlme_rx.channel;
2191 rx_status.ssi = data->mlme_rx.ssi;
2192 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
2193 &rx_status);
2194 break;
2195 }
2196 #endif /* CONFIG_CLIENT_MLME */
2197 case EVENT_EAPOL_RX:
2198 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2199 data->eapol_rx.data,
2200 data->eapol_rx.data_len);
2201 break;
2202 case EVENT_SIGNAL_CHANGE:
2203 bgscan_notify_signal_change(
2204 wpa_s, data->signal_change.above_threshold,
2205 data->signal_change.current_signal,
2206 data->signal_change.current_noise,
2207 data->signal_change.current_txrate);
2208 break;
2209 case EVENT_INTERFACE_ENABLED:
2210 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2211 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2212 #ifdef CONFIG_AP
2213 if (!wpa_s->ap_iface) {
2214 wpa_supplicant_set_state(wpa_s,
2215 WPA_DISCONNECTED);
2216 wpa_supplicant_req_scan(wpa_s, 0, 0);
2217 } else
2218 wpa_supplicant_set_state(wpa_s,
2219 WPA_COMPLETED);
2220 #else /* CONFIG_AP */
2221 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2222 wpa_supplicant_req_scan(wpa_s, 0, 0);
2223 #endif /* CONFIG_AP */
2224 }
2225 break;
2226 case EVENT_INTERFACE_DISABLED:
2227 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2228 wpa_supplicant_mark_disassoc(wpa_s);
2229 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2230 break;
2231 case EVENT_CHANNEL_LIST_CHANGED:
2232 if (wpa_s->drv_priv == NULL)
2233 break; /* Ignore event during drv initialization */
2234 #ifdef CONFIG_P2P
2235 wpas_p2p_update_channel_list(wpa_s);
2236 #endif /* CONFIG_P2P */
2237 break;
2238 case EVENT_INTERFACE_UNAVAILABLE:
2239 #ifdef CONFIG_P2P
2240 wpas_p2p_interface_unavailable(wpa_s);
2241 #endif /* CONFIG_P2P */
2242 break;
2243 case EVENT_BEST_CHANNEL:
2244 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2245 "(%d %d %d)",
2246 data->best_chan.freq_24, data->best_chan.freq_5,
2247 data->best_chan.freq_overall);
2248 wpa_s->best_24_freq = data->best_chan.freq_24;
2249 wpa_s->best_5_freq = data->best_chan.freq_5;
2250 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2251 #ifdef CONFIG_P2P
2252 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2253 data->best_chan.freq_5,
2254 data->best_chan.freq_overall);
2255 #endif /* CONFIG_P2P */
2256 break;
2257 case EVENT_UNPROT_DEAUTH:
2258 wpa_supplicant_event_unprot_deauth(wpa_s,
2259 &data->unprot_deauth);
2260 break;
2261 case EVENT_UNPROT_DISASSOC:
2262 wpa_supplicant_event_unprot_disassoc(wpa_s,
2263 &data->unprot_disassoc);
2264 break;
2265 case EVENT_STATION_LOW_ACK:
2266 #ifdef CONFIG_AP
2267 if (wpa_s->ap_iface && data)
2268 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2269 data->low_ack.addr);
2270 #endif /* CONFIG_AP */
2271 break;
2272 case EVENT_IBSS_PEER_LOST:
2273 #ifdef CONFIG_IBSS_RSN
2274 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2275 #endif /* CONFIG_IBSS_RSN */
2276 break;
2277 default:
2278 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2279 break;
2280 }
2281 }
2282