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Make rate-not-supported debug print more useful
[thirdparty/hostap.git] / wpa_supplicant / events.c
1 /*
2 * WPA Supplicant - Driver event processing
3 * Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "eapol_supp/eapol_supp_sm.h"
13 #include "rsn_supp/wpa.h"
14 #include "eloop.h"
15 #include "config.h"
16 #include "l2_packet/l2_packet.h"
17 #include "wpa_supplicant_i.h"
18 #include "driver_i.h"
19 #include "pcsc_funcs.h"
20 #include "rsn_supp/preauth.h"
21 #include "rsn_supp/pmksa_cache.h"
22 #include "common/wpa_ctrl.h"
23 #include "eap_peer/eap.h"
24 #include "ap/hostapd.h"
25 #include "p2p/p2p.h"
26 #include "wnm_sta.h"
27 #include "notify.h"
28 #include "common/ieee802_11_defs.h"
29 #include "common/ieee802_11_common.h"
30 #include "crypto/random.h"
31 #include "blacklist.h"
32 #include "wpas_glue.h"
33 #include "wps_supplicant.h"
34 #include "ibss_rsn.h"
35 #include "sme.h"
36 #include "gas_query.h"
37 #include "p2p_supplicant.h"
38 #include "bgscan.h"
39 #include "autoscan.h"
40 #include "ap.h"
41 #include "bss.h"
42 #include "scan.h"
43 #include "offchannel.h"
44 #include "interworking.h"
45 #include "mesh.h"
46 #include "mesh_mpm.h"
47 #include "wmm_ac.h"
48
49
50 #ifndef CONFIG_NO_SCAN_PROCESSING
51 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
52 int new_scan, int own_request);
53 #endif /* CONFIG_NO_SCAN_PROCESSING */
54
55
56 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
57 struct wpa_ssid *ssid)
58 {
59 struct os_reltime now;
60
61 if (ssid == NULL || ssid->disabled_until.sec == 0)
62 return 0;
63
64 os_get_reltime(&now);
65 if (ssid->disabled_until.sec > now.sec)
66 return ssid->disabled_until.sec - now.sec;
67
68 wpas_clear_temp_disabled(wpa_s, ssid, 0);
69
70 return 0;
71 }
72
73
74 static struct wpa_bss * wpa_supplicant_get_new_bss(
75 struct wpa_supplicant *wpa_s, const u8 *bssid)
76 {
77 struct wpa_bss *bss = NULL;
78 struct wpa_ssid *ssid = wpa_s->current_ssid;
79
80 if (ssid->ssid_len > 0)
81 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
82 if (!bss)
83 bss = wpa_bss_get_bssid(wpa_s, bssid);
84
85 return bss;
86 }
87
88
89 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
90 {
91 struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
92
93 if (!bss) {
94 wpa_supplicant_update_scan_results(wpa_s);
95
96 /* Get the BSS from the new scan results */
97 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
98 }
99
100 if (bss)
101 wpa_s->current_bss = bss;
102 }
103
104
105 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
106 {
107 struct wpa_ssid *ssid, *old_ssid;
108 int res;
109
110 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
111 wpa_supplicant_update_current_bss(wpa_s);
112 return 0;
113 }
114
115 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
116 "information");
117 ssid = wpa_supplicant_get_ssid(wpa_s);
118 if (ssid == NULL) {
119 wpa_msg(wpa_s, MSG_INFO,
120 "No network configuration found for the current AP");
121 return -1;
122 }
123
124 if (wpas_network_disabled(wpa_s, ssid)) {
125 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
126 return -1;
127 }
128
129 if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
130 disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
131 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
132 return -1;
133 }
134
135 res = wpas_temp_disabled(wpa_s, ssid);
136 if (res > 0) {
137 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
138 "disabled for %d second(s)", res);
139 return -1;
140 }
141
142 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
143 "current AP");
144 if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
145 u8 wpa_ie[80];
146 size_t wpa_ie_len = sizeof(wpa_ie);
147 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
148 wpa_ie, &wpa_ie_len) < 0)
149 wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
150 } else {
151 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
152 }
153
154 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
155 eapol_sm_invalidate_cached_session(wpa_s->eapol);
156 old_ssid = wpa_s->current_ssid;
157 wpa_s->current_ssid = ssid;
158
159 wpa_supplicant_update_current_bss(wpa_s);
160
161 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
162 wpa_supplicant_initiate_eapol(wpa_s);
163 if (old_ssid != wpa_s->current_ssid)
164 wpas_notify_network_changed(wpa_s);
165
166 return 0;
167 }
168
169
170 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
171 {
172 struct wpa_supplicant *wpa_s = eloop_ctx;
173
174 if (wpa_s->countermeasures) {
175 wpa_s->countermeasures = 0;
176 wpa_drv_set_countermeasures(wpa_s, 0);
177 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
178
179 /*
180 * It is possible that the device is sched scanning, which means
181 * that a connection attempt will be done only when we receive
182 * scan results. However, in this case, it would be preferable
183 * to scan and connect immediately, so cancel the sched_scan and
184 * issue a regular scan flow.
185 */
186 wpa_supplicant_cancel_sched_scan(wpa_s);
187 wpa_supplicant_req_scan(wpa_s, 0, 0);
188 }
189 }
190
191
192 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
193 {
194 int bssid_changed;
195
196 wnm_bss_keep_alive_deinit(wpa_s);
197
198 #ifdef CONFIG_IBSS_RSN
199 ibss_rsn_deinit(wpa_s->ibss_rsn);
200 wpa_s->ibss_rsn = NULL;
201 #endif /* CONFIG_IBSS_RSN */
202
203 #ifdef CONFIG_AP
204 wpa_supplicant_ap_deinit(wpa_s);
205 #endif /* CONFIG_AP */
206
207 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
208 return;
209
210 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
211 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
212 os_memset(wpa_s->bssid, 0, ETH_ALEN);
213 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
214 sme_clear_on_disassoc(wpa_s);
215 #ifdef CONFIG_P2P
216 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
217 #endif /* CONFIG_P2P */
218 wpa_s->current_bss = NULL;
219 wpa_s->assoc_freq = 0;
220
221 if (bssid_changed)
222 wpas_notify_bssid_changed(wpa_s);
223
224 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
225 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
226 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
227 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
228 wpa_s->ap_ies_from_associnfo = 0;
229 wpa_s->current_ssid = NULL;
230 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
231 wpa_s->key_mgmt = 0;
232
233 wpas_rrm_reset(wpa_s);
234 }
235
236
237 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
238 {
239 struct wpa_ie_data ie;
240 int pmksa_set = -1;
241 size_t i;
242
243 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
244 ie.pmkid == NULL)
245 return;
246
247 for (i = 0; i < ie.num_pmkid; i++) {
248 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
249 ie.pmkid + i * PMKID_LEN,
250 NULL, NULL, 0);
251 if (pmksa_set == 0) {
252 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
253 break;
254 }
255 }
256
257 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
258 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
259 }
260
261
262 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
263 union wpa_event_data *data)
264 {
265 if (data == NULL) {
266 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
267 "event");
268 return;
269 }
270 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
271 " index=%d preauth=%d",
272 MAC2STR(data->pmkid_candidate.bssid),
273 data->pmkid_candidate.index,
274 data->pmkid_candidate.preauth);
275
276 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
277 data->pmkid_candidate.index,
278 data->pmkid_candidate.preauth);
279 }
280
281
282 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
283 {
284 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
285 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
286 return 0;
287
288 #ifdef IEEE8021X_EAPOL
289 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
290 wpa_s->current_ssid &&
291 !(wpa_s->current_ssid->eapol_flags &
292 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
293 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
294 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
295 * plaintext or static WEP keys). */
296 return 0;
297 }
298 #endif /* IEEE8021X_EAPOL */
299
300 return 1;
301 }
302
303
304 /**
305 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
306 * @wpa_s: pointer to wpa_supplicant data
307 * @ssid: Configuration data for the network
308 * Returns: 0 on success, -1 on failure
309 *
310 * This function is called when starting authentication with a network that is
311 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
312 */
313 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
314 struct wpa_ssid *ssid)
315 {
316 #ifdef IEEE8021X_EAPOL
317 #ifdef PCSC_FUNCS
318 int aka = 0, sim = 0;
319
320 if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
321 wpa_s->scard != NULL || wpa_s->conf->external_sim)
322 return 0;
323
324 if (ssid == NULL || ssid->eap.eap_methods == NULL) {
325 sim = 1;
326 aka = 1;
327 } else {
328 struct eap_method_type *eap = ssid->eap.eap_methods;
329 while (eap->vendor != EAP_VENDOR_IETF ||
330 eap->method != EAP_TYPE_NONE) {
331 if (eap->vendor == EAP_VENDOR_IETF) {
332 if (eap->method == EAP_TYPE_SIM)
333 sim = 1;
334 else if (eap->method == EAP_TYPE_AKA ||
335 eap->method == EAP_TYPE_AKA_PRIME)
336 aka = 1;
337 }
338 eap++;
339 }
340 }
341
342 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
343 sim = 0;
344 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
345 eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
346 NULL)
347 aka = 0;
348
349 if (!sim && !aka) {
350 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
351 "use SIM, but neither EAP-SIM nor EAP-AKA are "
352 "enabled");
353 return 0;
354 }
355
356 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
357 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
358
359 wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
360 if (wpa_s->scard == NULL) {
361 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
362 "(pcsc-lite)");
363 return -1;
364 }
365 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
366 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
367 #endif /* PCSC_FUNCS */
368 #endif /* IEEE8021X_EAPOL */
369
370 return 0;
371 }
372
373
374 #ifndef CONFIG_NO_SCAN_PROCESSING
375
376 static int has_wep_key(struct wpa_ssid *ssid)
377 {
378 int i;
379
380 for (i = 0; i < NUM_WEP_KEYS; i++) {
381 if (ssid->wep_key_len[i])
382 return 1;
383 }
384
385 return 0;
386 }
387
388
389 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
390 struct wpa_ssid *ssid)
391 {
392 int privacy = 0;
393
394 if (ssid->mixed_cell)
395 return 1;
396
397 #ifdef CONFIG_WPS
398 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
399 return 1;
400 #endif /* CONFIG_WPS */
401
402 if (has_wep_key(ssid))
403 privacy = 1;
404
405 #ifdef IEEE8021X_EAPOL
406 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
407 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
408 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
409 privacy = 1;
410 #endif /* IEEE8021X_EAPOL */
411
412 if (wpa_key_mgmt_wpa(ssid->key_mgmt))
413 privacy = 1;
414
415 if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
416 privacy = 1;
417
418 if (bss->caps & IEEE80211_CAP_PRIVACY)
419 return privacy;
420 return !privacy;
421 }
422
423
424 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
425 struct wpa_ssid *ssid,
426 struct wpa_bss *bss)
427 {
428 struct wpa_ie_data ie;
429 int proto_match = 0;
430 const u8 *rsn_ie, *wpa_ie;
431 int ret;
432 int wep_ok;
433
434 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
435 if (ret >= 0)
436 return ret;
437
438 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
439 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
440 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
441 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
442 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
443
444 rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
445 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
446 proto_match++;
447
448 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
449 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
450 "failed");
451 break;
452 }
453
454 if (wep_ok &&
455 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
456 {
457 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
458 "in RSN IE");
459 return 1;
460 }
461
462 if (!(ie.proto & ssid->proto)) {
463 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
464 "mismatch");
465 break;
466 }
467
468 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
469 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
470 "cipher mismatch");
471 break;
472 }
473
474 if (!(ie.group_cipher & ssid->group_cipher)) {
475 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
476 "cipher mismatch");
477 break;
478 }
479
480 if (!(ie.key_mgmt & ssid->key_mgmt)) {
481 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
482 "mismatch");
483 break;
484 }
485
486 #ifdef CONFIG_IEEE80211W
487 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
488 wpas_get_ssid_pmf(wpa_s, ssid) ==
489 MGMT_FRAME_PROTECTION_REQUIRED) {
490 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
491 "frame protection");
492 break;
493 }
494 #endif /* CONFIG_IEEE80211W */
495
496 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
497 return 1;
498 }
499
500 wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
501 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
502 proto_match++;
503
504 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
505 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
506 "failed");
507 break;
508 }
509
510 if (wep_ok &&
511 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
512 {
513 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
514 "in WPA IE");
515 return 1;
516 }
517
518 if (!(ie.proto & ssid->proto)) {
519 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
520 "mismatch");
521 break;
522 }
523
524 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
525 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
526 "cipher mismatch");
527 break;
528 }
529
530 if (!(ie.group_cipher & ssid->group_cipher)) {
531 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
532 "cipher mismatch");
533 break;
534 }
535
536 if (!(ie.key_mgmt & ssid->key_mgmt)) {
537 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
538 "mismatch");
539 break;
540 }
541
542 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
543 return 1;
544 }
545
546 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
547 !rsn_ie) {
548 wpa_dbg(wpa_s, MSG_DEBUG, " allow for non-WPA IEEE 802.1X");
549 return 1;
550 }
551
552 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
553 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
554 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
555 return 0;
556 }
557
558 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
559 wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
560 wpa_dbg(wpa_s, MSG_DEBUG, " allow in OSEN");
561 return 1;
562 }
563
564 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
565 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
566 return 1;
567 }
568
569 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with "
570 "WPA/WPA2");
571
572 return 0;
573 }
574
575
576 static int freq_allowed(int *freqs, int freq)
577 {
578 int i;
579
580 if (freqs == NULL)
581 return 1;
582
583 for (i = 0; freqs[i]; i++)
584 if (freqs[i] == freq)
585 return 1;
586 return 0;
587 }
588
589
590 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
591 {
592 const struct hostapd_hw_modes *mode = NULL, *modes;
593 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
594 const u8 *rate_ie;
595 int i, j, k;
596
597 if (bss->freq == 0)
598 return 1; /* Cannot do matching without knowing band */
599
600 modes = wpa_s->hw.modes;
601 if (modes == NULL) {
602 /*
603 * The driver does not provide any additional information
604 * about the utilized hardware, so allow the connection attempt
605 * to continue.
606 */
607 return 1;
608 }
609
610 for (i = 0; i < wpa_s->hw.num_modes; i++) {
611 for (j = 0; j < modes[i].num_channels; j++) {
612 int freq = modes[i].channels[j].freq;
613 if (freq == bss->freq) {
614 if (mode &&
615 mode->mode == HOSTAPD_MODE_IEEE80211G)
616 break; /* do not allow 802.11b replace
617 * 802.11g */
618 mode = &modes[i];
619 break;
620 }
621 }
622 }
623
624 if (mode == NULL)
625 return 0;
626
627 for (i = 0; i < (int) sizeof(scan_ie); i++) {
628 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
629 if (rate_ie == NULL)
630 continue;
631
632 for (j = 2; j < rate_ie[1] + 2; j++) {
633 int flagged = !!(rate_ie[j] & 0x80);
634 int r = (rate_ie[j] & 0x7f) * 5;
635
636 /*
637 * IEEE Std 802.11n-2009 7.3.2.2:
638 * The new BSS Membership selector value is encoded
639 * like a legacy basic rate, but it is not a rate and
640 * only indicates if the BSS members are required to
641 * support the mandatory features of Clause 20 [HT PHY]
642 * in order to join the BSS.
643 */
644 if (flagged && ((rate_ie[j] & 0x7f) ==
645 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
646 if (!ht_supported(mode)) {
647 wpa_dbg(wpa_s, MSG_DEBUG,
648 " hardware does not support "
649 "HT PHY");
650 return 0;
651 }
652 continue;
653 }
654
655 /* There's also a VHT selector for 802.11ac */
656 if (flagged && ((rate_ie[j] & 0x7f) ==
657 BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
658 if (!vht_supported(mode)) {
659 wpa_dbg(wpa_s, MSG_DEBUG,
660 " hardware does not support "
661 "VHT PHY");
662 return 0;
663 }
664 continue;
665 }
666
667 if (!flagged)
668 continue;
669
670 /* check for legacy basic rates */
671 for (k = 0; k < mode->num_rates; k++) {
672 if (mode->rates[k] == r)
673 break;
674 }
675 if (k == mode->num_rates) {
676 /*
677 * IEEE Std 802.11-2007 7.3.2.2 demands that in
678 * order to join a BSS all required rates
679 * have to be supported by the hardware.
680 */
681 wpa_dbg(wpa_s, MSG_DEBUG,
682 " hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)",
683 r / 10, r % 10,
684 bss->freq, mode->mode, mode->num_rates);
685 return 0;
686 }
687 }
688 }
689
690 return 1;
691 }
692
693
694 /*
695 * Test whether BSS is in an ESS.
696 * This is done differently in DMG (60 GHz) and non-DMG bands
697 */
698 static int bss_is_ess(struct wpa_bss *bss)
699 {
700 if (bss_is_dmg(bss)) {
701 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
702 IEEE80211_CAP_DMG_AP;
703 }
704
705 return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
706 IEEE80211_CAP_ESS);
707 }
708
709
710 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
711 {
712 size_t i;
713
714 for (i = 0; i < ETH_ALEN; i++) {
715 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
716 return 0;
717 }
718 return 1;
719 }
720
721
722 static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
723 {
724 size_t i;
725
726 for (i = 0; i < num; i++) {
727 const u8 *a = list + i * ETH_ALEN * 2;
728 const u8 *m = a + ETH_ALEN;
729
730 if (match_mac_mask(a, addr, m))
731 return 1;
732 }
733 return 0;
734 }
735
736
737 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
738 int i, struct wpa_bss *bss,
739 struct wpa_ssid *group,
740 int only_first_ssid)
741 {
742 u8 wpa_ie_len, rsn_ie_len;
743 int wpa;
744 struct wpa_blacklist *e;
745 const u8 *ie;
746 struct wpa_ssid *ssid;
747 int osen;
748
749 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
750 wpa_ie_len = ie ? ie[1] : 0;
751
752 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
753 rsn_ie_len = ie ? ie[1] : 0;
754
755 ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
756 osen = ie != NULL;
757
758 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
759 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
760 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
761 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
762 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
763 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
764 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
765 " p2p" : "",
766 osen ? " osen=1" : "");
767
768 e = wpa_blacklist_get(wpa_s, bss->bssid);
769 if (e) {
770 int limit = 1;
771 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
772 /*
773 * When only a single network is enabled, we can
774 * trigger blacklisting on the first failure. This
775 * should not be done with multiple enabled networks to
776 * avoid getting forced to move into a worse ESS on
777 * single error if there are no other BSSes of the
778 * current ESS.
779 */
780 limit = 0;
781 }
782 if (e->count > limit) {
783 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
784 "(count=%d limit=%d)", e->count, limit);
785 return NULL;
786 }
787 }
788
789 if (bss->ssid_len == 0) {
790 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
791 return NULL;
792 }
793
794 if (disallowed_bssid(wpa_s, bss->bssid)) {
795 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed");
796 return NULL;
797 }
798
799 if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
800 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed");
801 return NULL;
802 }
803
804 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
805
806 for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
807 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
808 int res;
809
810 if (wpas_network_disabled(wpa_s, ssid)) {
811 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
812 continue;
813 }
814
815 res = wpas_temp_disabled(wpa_s, ssid);
816 if (res > 0) {
817 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled "
818 "temporarily for %d second(s)", res);
819 continue;
820 }
821
822 #ifdef CONFIG_WPS
823 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
824 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
825 "(WPS)");
826 continue;
827 }
828
829 if (wpa && ssid->ssid_len == 0 &&
830 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
831 check_ssid = 0;
832
833 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
834 /* Only allow wildcard SSID match if an AP
835 * advertises active WPS operation that matches
836 * with our mode. */
837 check_ssid = 1;
838 if (ssid->ssid_len == 0 &&
839 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
840 check_ssid = 0;
841 }
842 #endif /* CONFIG_WPS */
843
844 if (ssid->bssid_set && ssid->ssid_len == 0 &&
845 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
846 check_ssid = 0;
847
848 if (check_ssid &&
849 (bss->ssid_len != ssid->ssid_len ||
850 os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
851 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
852 continue;
853 }
854
855 if (ssid->bssid_set &&
856 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
857 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
858 continue;
859 }
860
861 /* check blacklist */
862 if (ssid->num_bssid_blacklist &&
863 addr_in_list(bss->bssid, ssid->bssid_blacklist,
864 ssid->num_bssid_blacklist)) {
865 wpa_dbg(wpa_s, MSG_DEBUG,
866 " skip - BSSID blacklisted");
867 continue;
868 }
869
870 /* if there is a whitelist, only accept those APs */
871 if (ssid->num_bssid_whitelist &&
872 !addr_in_list(bss->bssid, ssid->bssid_whitelist,
873 ssid->num_bssid_whitelist)) {
874 wpa_dbg(wpa_s, MSG_DEBUG,
875 " skip - BSSID not in whitelist");
876 continue;
877 }
878
879 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
880 continue;
881
882 if (!osen && !wpa &&
883 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
884 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
885 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
886 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
887 "not allowed");
888 continue;
889 }
890
891 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
892 has_wep_key(ssid)) {
893 wpa_dbg(wpa_s, MSG_DEBUG, " skip - ignore WPA/WPA2 AP for WEP network block");
894 continue;
895 }
896
897 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
898 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-OSEN network "
899 "not allowed");
900 continue;
901 }
902
903 if (!wpa_supplicant_match_privacy(bss, ssid)) {
904 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
905 "mismatch");
906 continue;
907 }
908
909 if (!bss_is_ess(bss)) {
910 wpa_dbg(wpa_s, MSG_DEBUG, " skip - not ESS network");
911 continue;
912 }
913
914 if (!freq_allowed(ssid->freq_list, bss->freq)) {
915 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
916 "allowed");
917 continue;
918 }
919
920 if (!rate_match(wpa_s, bss)) {
921 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do "
922 "not match");
923 continue;
924 }
925
926 #ifdef CONFIG_P2P
927 if (ssid->p2p_group &&
928 !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
929 !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
930 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P IE seen");
931 continue;
932 }
933
934 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
935 struct wpabuf *p2p_ie;
936 u8 dev_addr[ETH_ALEN];
937
938 ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
939 if (ie == NULL) {
940 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P element");
941 continue;
942 }
943 p2p_ie = wpa_bss_get_vendor_ie_multi(
944 bss, P2P_IE_VENDOR_TYPE);
945 if (p2p_ie == NULL) {
946 wpa_dbg(wpa_s, MSG_DEBUG, " skip - could not fetch P2P element");
947 continue;
948 }
949
950 if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
951 || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
952 ETH_ALEN) != 0) {
953 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no matching GO P2P Device Address in P2P element");
954 wpabuf_free(p2p_ie);
955 continue;
956 }
957 wpabuf_free(p2p_ie);
958 }
959
960 /*
961 * TODO: skip the AP if its P2P IE has Group Formation
962 * bit set in the P2P Group Capability Bitmap and we
963 * are not in Group Formation with that device.
964 */
965 #endif /* CONFIG_P2P */
966
967 /* Matching configuration found */
968 return ssid;
969 }
970
971 /* No matching configuration found */
972 return NULL;
973 }
974
975
976 static struct wpa_bss *
977 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
978 struct wpa_ssid *group,
979 struct wpa_ssid **selected_ssid,
980 int only_first_ssid)
981 {
982 unsigned int i;
983
984 if (only_first_ssid)
985 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
986 group->id);
987 else
988 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
989 group->priority);
990
991 for (i = 0; i < wpa_s->last_scan_res_used; i++) {
992 struct wpa_bss *bss = wpa_s->last_scan_res[i];
993 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
994 only_first_ssid);
995 if (!*selected_ssid)
996 continue;
997 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
998 " ssid='%s'",
999 MAC2STR(bss->bssid),
1000 wpa_ssid_txt(bss->ssid, bss->ssid_len));
1001 return bss;
1002 }
1003
1004 return NULL;
1005 }
1006
1007
1008 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1009 struct wpa_ssid **selected_ssid)
1010 {
1011 struct wpa_bss *selected = NULL;
1012 int prio;
1013 struct wpa_ssid *next_ssid = NULL;
1014
1015 if (wpa_s->last_scan_res == NULL ||
1016 wpa_s->last_scan_res_used == 0)
1017 return NULL; /* no scan results from last update */
1018
1019 if (wpa_s->next_ssid) {
1020 struct wpa_ssid *ssid;
1021
1022 /* check that next_ssid is still valid */
1023 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1024 if (ssid == wpa_s->next_ssid)
1025 break;
1026 }
1027 next_ssid = ssid;
1028 wpa_s->next_ssid = NULL;
1029 }
1030
1031 while (selected == NULL) {
1032 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1033 if (next_ssid && next_ssid->priority ==
1034 wpa_s->conf->pssid[prio]->priority) {
1035 selected = wpa_supplicant_select_bss(
1036 wpa_s, next_ssid, selected_ssid, 1);
1037 if (selected)
1038 break;
1039 }
1040 selected = wpa_supplicant_select_bss(
1041 wpa_s, wpa_s->conf->pssid[prio],
1042 selected_ssid, 0);
1043 if (selected)
1044 break;
1045 }
1046
1047 if (selected == NULL && wpa_s->blacklist &&
1048 !wpa_s->countermeasures) {
1049 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1050 "blacklist and try again");
1051 wpa_blacklist_clear(wpa_s);
1052 wpa_s->blacklist_cleared++;
1053 } else if (selected == NULL)
1054 break;
1055 }
1056
1057 return selected;
1058 }
1059
1060
1061 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1062 int timeout_sec, int timeout_usec)
1063 {
1064 if (!wpa_supplicant_enabled_networks(wpa_s)) {
1065 /*
1066 * No networks are enabled; short-circuit request so
1067 * we don't wait timeout seconds before transitioning
1068 * to INACTIVE state.
1069 */
1070 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1071 "since there are no enabled networks");
1072 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1073 return;
1074 }
1075
1076 wpa_s->scan_for_connection = 1;
1077 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1078 }
1079
1080
1081 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1082 struct wpa_bss *selected,
1083 struct wpa_ssid *ssid)
1084 {
1085 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1086 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1087 "PBC session overlap");
1088 #ifdef CONFIG_P2P
1089 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1090 wpa_s->p2p_in_provisioning) {
1091 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1092 wpa_s, NULL);
1093 return -1;
1094 }
1095 #endif /* CONFIG_P2P */
1096
1097 #ifdef CONFIG_WPS
1098 wpas_wps_cancel(wpa_s);
1099 #endif /* CONFIG_WPS */
1100 return -1;
1101 }
1102
1103 wpa_msg(wpa_s, MSG_DEBUG,
1104 "Considering connect request: reassociate: %d selected: "
1105 MACSTR " bssid: " MACSTR " pending: " MACSTR
1106 " wpa_state: %s ssid=%p current_ssid=%p",
1107 wpa_s->reassociate, MAC2STR(selected->bssid),
1108 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1109 wpa_supplicant_state_txt(wpa_s->wpa_state),
1110 ssid, wpa_s->current_ssid);
1111
1112 /*
1113 * Do not trigger new association unless the BSSID has changed or if
1114 * reassociation is requested. If we are in process of associating with
1115 * the selected BSSID, do not trigger new attempt.
1116 */
1117 if (wpa_s->reassociate ||
1118 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1119 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1120 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1121 (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1122 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1123 0) ||
1124 (is_zero_ether_addr(wpa_s->pending_bssid) &&
1125 ssid != wpa_s->current_ssid)))) {
1126 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1127 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1128 return 0;
1129 }
1130 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1131 MAC2STR(selected->bssid));
1132 wpa_supplicant_associate(wpa_s, selected, ssid);
1133 } else {
1134 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1135 "connect with the selected AP");
1136 }
1137
1138 return 0;
1139 }
1140
1141
1142 static struct wpa_ssid *
1143 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1144 {
1145 int prio;
1146 struct wpa_ssid *ssid;
1147
1148 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1149 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1150 {
1151 if (wpas_network_disabled(wpa_s, ssid))
1152 continue;
1153 if (ssid->mode == IEEE80211_MODE_IBSS ||
1154 ssid->mode == IEEE80211_MODE_AP ||
1155 ssid->mode == IEEE80211_MODE_MESH)
1156 return ssid;
1157 }
1158 }
1159 return NULL;
1160 }
1161
1162
1163 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1164 * on BSS added and BSS changed events */
1165 static void wpa_supplicant_rsn_preauth_scan_results(
1166 struct wpa_supplicant *wpa_s)
1167 {
1168 struct wpa_bss *bss;
1169
1170 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1171 return;
1172
1173 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1174 const u8 *ssid, *rsn;
1175
1176 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1177 if (ssid == NULL)
1178 continue;
1179
1180 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1181 if (rsn == NULL)
1182 continue;
1183
1184 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1185 }
1186
1187 }
1188
1189
1190 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1191 struct wpa_bss *selected,
1192 struct wpa_ssid *ssid)
1193 {
1194 struct wpa_bss *current_bss = NULL;
1195 int min_diff;
1196
1197 if (wpa_s->reassociate)
1198 return 1; /* explicit request to reassociate */
1199 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1200 return 1; /* we are not associated; continue */
1201 if (wpa_s->current_ssid == NULL)
1202 return 1; /* unknown current SSID */
1203 if (wpa_s->current_ssid != ssid)
1204 return 1; /* different network block */
1205
1206 if (wpas_driver_bss_selection(wpa_s))
1207 return 0; /* Driver-based roaming */
1208
1209 if (wpa_s->current_ssid->ssid)
1210 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1211 wpa_s->current_ssid->ssid,
1212 wpa_s->current_ssid->ssid_len);
1213 if (!current_bss)
1214 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1215
1216 if (!current_bss)
1217 return 1; /* current BSS not seen in scan results */
1218
1219 if (current_bss == selected)
1220 return 0;
1221
1222 if (selected->last_update_idx > current_bss->last_update_idx)
1223 return 1; /* current BSS not seen in the last scan */
1224
1225 #ifndef CONFIG_NO_ROAMING
1226 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1227 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1228 " level=%d snr=%d est_throughput=%u",
1229 MAC2STR(current_bss->bssid), current_bss->level,
1230 current_bss->snr, current_bss->est_throughput);
1231 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1232 " level=%d snr=%d est_throughput=%u",
1233 MAC2STR(selected->bssid), selected->level,
1234 selected->snr, selected->est_throughput);
1235
1236 if (wpa_s->current_ssid->bssid_set &&
1237 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1238 0) {
1239 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1240 "has preferred BSSID");
1241 return 1;
1242 }
1243
1244 if (selected->est_throughput > current_bss->est_throughput + 5000) {
1245 wpa_dbg(wpa_s, MSG_DEBUG,
1246 "Allow reassociation - selected BSS has better estimated throughput");
1247 return 1;
1248 }
1249
1250 if (current_bss->level < 0 && current_bss->level > selected->level) {
1251 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1252 "signal level");
1253 return 0;
1254 }
1255
1256 min_diff = 2;
1257 if (current_bss->level < 0) {
1258 if (current_bss->level < -85)
1259 min_diff = 1;
1260 else if (current_bss->level < -80)
1261 min_diff = 2;
1262 else if (current_bss->level < -75)
1263 min_diff = 3;
1264 else if (current_bss->level < -70)
1265 min_diff = 4;
1266 else
1267 min_diff = 5;
1268 }
1269 if (abs(current_bss->level - selected->level) < min_diff) {
1270 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1271 "in signal level");
1272 return 0;
1273 }
1274
1275 return 1;
1276 #else /* CONFIG_NO_ROAMING */
1277 return 0;
1278 #endif /* CONFIG_NO_ROAMING */
1279 }
1280
1281
1282 /* Return != 0 if no scan results could be fetched or if scan results should not
1283 * be shared with other virtual interfaces. */
1284 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1285 union wpa_event_data *data,
1286 int own_request)
1287 {
1288 struct wpa_scan_results *scan_res = NULL;
1289 int ret = 0;
1290 int ap = 0;
1291 #ifndef CONFIG_NO_RANDOM_POOL
1292 size_t i, num;
1293 #endif /* CONFIG_NO_RANDOM_POOL */
1294
1295 #ifdef CONFIG_AP
1296 if (wpa_s->ap_iface)
1297 ap = 1;
1298 #endif /* CONFIG_AP */
1299
1300 wpa_supplicant_notify_scanning(wpa_s, 0);
1301
1302 scan_res = wpa_supplicant_get_scan_results(wpa_s,
1303 data ? &data->scan_info :
1304 NULL, 1);
1305 if (scan_res == NULL) {
1306 if (wpa_s->conf->ap_scan == 2 || ap ||
1307 wpa_s->scan_res_handler == scan_only_handler)
1308 return -1;
1309 if (!own_request)
1310 return -1;
1311 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1312 "scanning again");
1313 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1314 ret = -1;
1315 goto scan_work_done;
1316 }
1317
1318 #ifndef CONFIG_NO_RANDOM_POOL
1319 num = scan_res->num;
1320 if (num > 10)
1321 num = 10;
1322 for (i = 0; i < num; i++) {
1323 u8 buf[5];
1324 struct wpa_scan_res *res = scan_res->res[i];
1325 buf[0] = res->bssid[5];
1326 buf[1] = res->qual & 0xff;
1327 buf[2] = res->noise & 0xff;
1328 buf[3] = res->level & 0xff;
1329 buf[4] = res->tsf & 0xff;
1330 random_add_randomness(buf, sizeof(buf));
1331 }
1332 #endif /* CONFIG_NO_RANDOM_POOL */
1333
1334 if (own_request && wpa_s->scan_res_handler &&
1335 (wpa_s->own_scan_running || !wpa_s->radio->external_scan_running)) {
1336 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1337 struct wpa_scan_results *scan_res);
1338
1339 scan_res_handler = wpa_s->scan_res_handler;
1340 wpa_s->scan_res_handler = NULL;
1341 scan_res_handler(wpa_s, scan_res);
1342 ret = -2;
1343 goto scan_work_done;
1344 }
1345
1346 if (ap) {
1347 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1348 #ifdef CONFIG_AP
1349 if (wpa_s->ap_iface->scan_cb)
1350 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1351 #endif /* CONFIG_AP */
1352 goto scan_work_done;
1353 }
1354
1355 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1356 wpa_s->own_scan_running, wpa_s->radio->external_scan_running);
1357 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1358 wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1359 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1360 wpa_s->manual_scan_id);
1361 wpa_s->manual_scan_use_id = 0;
1362 } else {
1363 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1364 }
1365 wpas_notify_scan_results(wpa_s);
1366
1367 wpas_notify_scan_done(wpa_s, 1);
1368
1369 if (!wpa_s->own_scan_running && wpa_s->radio->external_scan_running) {
1370 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1371 wpa_scan_results_free(scan_res);
1372 return 0;
1373 }
1374
1375 if (wnm_scan_process(wpa_s, 1) > 0)
1376 goto scan_work_done;
1377
1378 if (sme_proc_obss_scan(wpa_s) > 0)
1379 goto scan_work_done;
1380
1381 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1382 goto scan_work_done;
1383
1384 if (autoscan_notify_scan(wpa_s, scan_res))
1385 goto scan_work_done;
1386
1387 if (wpa_s->disconnected) {
1388 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1389 goto scan_work_done;
1390 }
1391
1392 if (!wpas_driver_bss_selection(wpa_s) &&
1393 bgscan_notify_scan(wpa_s, scan_res) == 1)
1394 goto scan_work_done;
1395
1396 wpas_wps_update_ap_info(wpa_s, scan_res);
1397
1398 wpa_scan_results_free(scan_res);
1399
1400 if (wpa_s->scan_work) {
1401 struct wpa_radio_work *work = wpa_s->scan_work;
1402 wpa_s->scan_work = NULL;
1403 radio_work_done(work);
1404 }
1405
1406 return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1407
1408 scan_work_done:
1409 wpa_scan_results_free(scan_res);
1410 if (wpa_s->scan_work) {
1411 struct wpa_radio_work *work = wpa_s->scan_work;
1412 wpa_s->scan_work = NULL;
1413 radio_work_done(work);
1414 }
1415 return ret;
1416 }
1417
1418
1419 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1420 int new_scan, int own_request)
1421 {
1422 struct wpa_bss *selected;
1423 struct wpa_ssid *ssid = NULL;
1424
1425 if (wpa_s->p2p_mgmt)
1426 return 0; /* no normal connection on p2p_mgmt interface */
1427
1428 selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1429
1430 if (selected) {
1431 int skip;
1432 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1433 if (skip) {
1434 if (new_scan)
1435 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1436 return 0;
1437 }
1438
1439 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1440 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1441 return -1;
1442 }
1443 if (new_scan)
1444 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1445 /*
1446 * Do not notify other virtual radios of scan results since we do not
1447 * want them to start other associations at the same time.
1448 */
1449 return 1;
1450 } else {
1451 #ifdef CONFIG_MESH
1452 if (wpa_s->ifmsh) {
1453 wpa_msg(wpa_s, MSG_INFO,
1454 "Avoiding join because we already joined a mesh group");
1455 return 0;
1456 }
1457 #endif /* CONFIG_MESH */
1458 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1459 ssid = wpa_supplicant_pick_new_network(wpa_s);
1460 if (ssid) {
1461 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1462 wpa_supplicant_associate(wpa_s, NULL, ssid);
1463 if (new_scan)
1464 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1465 } else if (own_request) {
1466 /*
1467 * No SSID found. If SCAN results are as a result of
1468 * own scan request and not due to a scan request on
1469 * another shared interface, try another scan.
1470 */
1471 int timeout_sec = wpa_s->scan_interval;
1472 int timeout_usec = 0;
1473 #ifdef CONFIG_P2P
1474 int res;
1475
1476 res = wpas_p2p_scan_no_go_seen(wpa_s);
1477 if (res == 2)
1478 return 2;
1479 if (res == 1)
1480 return 0;
1481
1482 if (wpa_s->p2p_in_provisioning ||
1483 wpa_s->show_group_started ||
1484 wpa_s->p2p_in_invitation) {
1485 /*
1486 * Use shorter wait during P2P Provisioning
1487 * state and during P2P join-a-group operation
1488 * to speed up group formation.
1489 */
1490 timeout_sec = 0;
1491 timeout_usec = 250000;
1492 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1493 timeout_usec);
1494 return 0;
1495 }
1496 #endif /* CONFIG_P2P */
1497 #ifdef CONFIG_INTERWORKING
1498 if (wpa_s->conf->auto_interworking &&
1499 wpa_s->conf->interworking &&
1500 wpa_s->conf->cred) {
1501 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1502 "start ANQP fetch since no matching "
1503 "networks found");
1504 wpa_s->network_select = 1;
1505 wpa_s->auto_network_select = 1;
1506 interworking_start_fetch_anqp(wpa_s);
1507 return 1;
1508 }
1509 #endif /* CONFIG_INTERWORKING */
1510 #ifdef CONFIG_WPS
1511 if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1512 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1513 timeout_sec = 0;
1514 timeout_usec = 500000;
1515 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1516 timeout_usec);
1517 return 0;
1518 }
1519 #endif /* CONFIG_WPS */
1520 if (wpa_supplicant_req_sched_scan(wpa_s))
1521 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1522 timeout_usec);
1523 }
1524 }
1525 return 0;
1526 }
1527
1528
1529 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1530 union wpa_event_data *data)
1531 {
1532 struct wpa_supplicant *ifs;
1533 int res;
1534
1535 res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1536 if (res == 2) {
1537 /*
1538 * Interface may have been removed, so must not dereference
1539 * wpa_s after this.
1540 */
1541 return 1;
1542 }
1543 if (res != 0) {
1544 /*
1545 * If no scan results could be fetched, then no need to
1546 * notify those interfaces that did not actually request
1547 * this scan. Similarly, if scan results started a new operation on this
1548 * interface, do not notify other interfaces to avoid concurrent
1549 * operations during a connection attempt.
1550 */
1551 return 0;
1552 }
1553
1554 /*
1555 * Check other interfaces to see if they share the same radio. If
1556 * so, they get updated with this same scan info.
1557 */
1558 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1559 radio_list) {
1560 if (ifs != wpa_s) {
1561 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1562 "sibling", ifs->ifname);
1563 _wpa_supplicant_event_scan_results(ifs, data, 0);
1564 }
1565 }
1566
1567 return 0;
1568 }
1569
1570 #endif /* CONFIG_NO_SCAN_PROCESSING */
1571
1572
1573 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1574 {
1575 #ifdef CONFIG_NO_SCAN_PROCESSING
1576 return -1;
1577 #else /* CONFIG_NO_SCAN_PROCESSING */
1578 struct os_reltime now;
1579
1580 if (wpa_s->last_scan_res_used <= 0)
1581 return -1;
1582
1583 os_get_reltime(&now);
1584 if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1585 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1586 return -1;
1587 }
1588
1589 return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1590 #endif /* CONFIG_NO_SCAN_PROCESSING */
1591 }
1592
1593 #ifdef CONFIG_WNM
1594
1595 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1596 {
1597 struct wpa_supplicant *wpa_s = eloop_ctx;
1598
1599 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1600 return;
1601
1602 if (!wpa_s->no_keep_alive) {
1603 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1604 MAC2STR(wpa_s->bssid));
1605 /* TODO: could skip this if normal data traffic has been sent */
1606 /* TODO: Consider using some more appropriate data frame for
1607 * this */
1608 if (wpa_s->l2)
1609 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1610 (u8 *) "", 0);
1611 }
1612
1613 #ifdef CONFIG_SME
1614 if (wpa_s->sme.bss_max_idle_period) {
1615 unsigned int msec;
1616 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1617 if (msec > 100)
1618 msec -= 100;
1619 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1620 wnm_bss_keep_alive, wpa_s, NULL);
1621 }
1622 #endif /* CONFIG_SME */
1623 }
1624
1625
1626 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1627 const u8 *ies, size_t ies_len)
1628 {
1629 struct ieee802_11_elems elems;
1630
1631 if (ies == NULL)
1632 return;
1633
1634 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1635 return;
1636
1637 #ifdef CONFIG_SME
1638 if (elems.bss_max_idle_period) {
1639 unsigned int msec;
1640 wpa_s->sme.bss_max_idle_period =
1641 WPA_GET_LE16(elems.bss_max_idle_period);
1642 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1643 "TU)%s", wpa_s->sme.bss_max_idle_period,
1644 (elems.bss_max_idle_period[2] & 0x01) ?
1645 " (protected keep-live required)" : "");
1646 if (wpa_s->sme.bss_max_idle_period == 0)
1647 wpa_s->sme.bss_max_idle_period = 1;
1648 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1649 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1650 /* msec times 1000 */
1651 msec = wpa_s->sme.bss_max_idle_period * 1024;
1652 if (msec > 100)
1653 msec -= 100;
1654 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1655 wnm_bss_keep_alive, wpa_s,
1656 NULL);
1657 }
1658 }
1659 #endif /* CONFIG_SME */
1660 }
1661
1662 #endif /* CONFIG_WNM */
1663
1664
1665 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1666 {
1667 #ifdef CONFIG_WNM
1668 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1669 #endif /* CONFIG_WNM */
1670 }
1671
1672
1673 #ifdef CONFIG_INTERWORKING
1674
1675 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1676 size_t len)
1677 {
1678 int res;
1679
1680 wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1681 res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1682 if (res) {
1683 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1684 }
1685
1686 return res;
1687 }
1688
1689
1690 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1691 const u8 *ies, size_t ies_len)
1692 {
1693 struct ieee802_11_elems elems;
1694
1695 if (ies == NULL)
1696 return;
1697
1698 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1699 return;
1700
1701 if (elems.qos_map_set) {
1702 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1703 elems.qos_map_set_len);
1704 }
1705 }
1706
1707 #endif /* CONFIG_INTERWORKING */
1708
1709
1710 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1711 union wpa_event_data *data)
1712 {
1713 int l, len, found = 0, wpa_found, rsn_found;
1714 const u8 *p;
1715 #ifdef CONFIG_IEEE80211R
1716 u8 bssid[ETH_ALEN];
1717 #endif /* CONFIG_IEEE80211R */
1718
1719 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1720 if (data->assoc_info.req_ies)
1721 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1722 data->assoc_info.req_ies_len);
1723 if (data->assoc_info.resp_ies) {
1724 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1725 data->assoc_info.resp_ies_len);
1726 #ifdef CONFIG_TDLS
1727 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1728 data->assoc_info.resp_ies_len);
1729 #endif /* CONFIG_TDLS */
1730 #ifdef CONFIG_WNM
1731 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1732 data->assoc_info.resp_ies_len);
1733 #endif /* CONFIG_WNM */
1734 #ifdef CONFIG_INTERWORKING
1735 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1736 data->assoc_info.resp_ies_len);
1737 #endif /* CONFIG_INTERWORKING */
1738 }
1739 if (data->assoc_info.beacon_ies)
1740 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1741 data->assoc_info.beacon_ies,
1742 data->assoc_info.beacon_ies_len);
1743 if (data->assoc_info.freq)
1744 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1745 data->assoc_info.freq);
1746
1747 p = data->assoc_info.req_ies;
1748 l = data->assoc_info.req_ies_len;
1749
1750 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1751 while (p && l >= 2) {
1752 len = p[1] + 2;
1753 if (len > l) {
1754 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1755 p, l);
1756 break;
1757 }
1758 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1759 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1760 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1761 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1762 break;
1763 found = 1;
1764 wpa_find_assoc_pmkid(wpa_s);
1765 break;
1766 }
1767 l -= len;
1768 p += len;
1769 }
1770 if (!found && data->assoc_info.req_ies)
1771 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1772
1773 #ifdef CONFIG_IEEE80211R
1774 #ifdef CONFIG_SME
1775 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1776 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1777 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1778 data->assoc_info.resp_ies,
1779 data->assoc_info.resp_ies_len,
1780 bssid) < 0) {
1781 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1782 "Reassociation Response failed");
1783 wpa_supplicant_deauthenticate(
1784 wpa_s, WLAN_REASON_INVALID_IE);
1785 return -1;
1786 }
1787 }
1788
1789 p = data->assoc_info.resp_ies;
1790 l = data->assoc_info.resp_ies_len;
1791
1792 #ifdef CONFIG_WPS_STRICT
1793 if (p && wpa_s->current_ssid &&
1794 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1795 struct wpabuf *wps;
1796 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1797 if (wps == NULL) {
1798 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1799 "include WPS IE in (Re)Association Response");
1800 return -1;
1801 }
1802
1803 if (wps_validate_assoc_resp(wps) < 0) {
1804 wpabuf_free(wps);
1805 wpa_supplicant_deauthenticate(
1806 wpa_s, WLAN_REASON_INVALID_IE);
1807 return -1;
1808 }
1809 wpabuf_free(wps);
1810 }
1811 #endif /* CONFIG_WPS_STRICT */
1812
1813 /* Go through the IEs and make a copy of the MDIE, if present. */
1814 while (p && l >= 2) {
1815 len = p[1] + 2;
1816 if (len > l) {
1817 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1818 p, l);
1819 break;
1820 }
1821 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1822 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1823 wpa_s->sme.ft_used = 1;
1824 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1825 MOBILITY_DOMAIN_ID_LEN);
1826 break;
1827 }
1828 l -= len;
1829 p += len;
1830 }
1831 #endif /* CONFIG_SME */
1832
1833 /* Process FT when SME is in the driver */
1834 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1835 wpa_ft_is_completed(wpa_s->wpa)) {
1836 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1837 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1838 data->assoc_info.resp_ies,
1839 data->assoc_info.resp_ies_len,
1840 bssid) < 0) {
1841 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1842 "Reassociation Response failed");
1843 wpa_supplicant_deauthenticate(
1844 wpa_s, WLAN_REASON_INVALID_IE);
1845 return -1;
1846 }
1847 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1848 }
1849
1850 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1851 data->assoc_info.resp_ies_len);
1852 #endif /* CONFIG_IEEE80211R */
1853
1854 /* WPA/RSN IE from Beacon/ProbeResp */
1855 p = data->assoc_info.beacon_ies;
1856 l = data->assoc_info.beacon_ies_len;
1857
1858 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1859 */
1860 wpa_found = rsn_found = 0;
1861 while (p && l >= 2) {
1862 len = p[1] + 2;
1863 if (len > l) {
1864 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1865 p, l);
1866 break;
1867 }
1868 if (!wpa_found &&
1869 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1870 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1871 wpa_found = 1;
1872 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1873 }
1874
1875 if (!rsn_found &&
1876 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1877 rsn_found = 1;
1878 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1879 }
1880
1881 l -= len;
1882 p += len;
1883 }
1884
1885 if (!wpa_found && data->assoc_info.beacon_ies)
1886 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1887 if (!rsn_found && data->assoc_info.beacon_ies)
1888 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1889 if (wpa_found || rsn_found)
1890 wpa_s->ap_ies_from_associnfo = 1;
1891
1892 if (wpa_s->assoc_freq && data->assoc_info.freq &&
1893 wpa_s->assoc_freq != data->assoc_info.freq) {
1894 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1895 "%u to %u MHz",
1896 wpa_s->assoc_freq, data->assoc_info.freq);
1897 wpa_supplicant_update_scan_results(wpa_s);
1898 }
1899
1900 wpa_s->assoc_freq = data->assoc_info.freq;
1901
1902 return 0;
1903 }
1904
1905
1906 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1907 {
1908 const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1909
1910 if (!wpa_s->current_bss || !wpa_s->current_ssid)
1911 return -1;
1912
1913 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1914 return 0;
1915
1916 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1917 WPA_IE_VENDOR_TYPE);
1918 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1919
1920 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1921 bss_wpa ? 2 + bss_wpa[1] : 0) ||
1922 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1923 bss_rsn ? 2 + bss_rsn[1] : 0))
1924 return -1;
1925
1926 return 0;
1927 }
1928
1929
1930 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1931 union wpa_event_data *data)
1932 {
1933 u8 bssid[ETH_ALEN];
1934 int ft_completed;
1935
1936 #ifdef CONFIG_AP
1937 if (wpa_s->ap_iface) {
1938 if (!data)
1939 return;
1940 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1941 data->assoc_info.addr,
1942 data->assoc_info.req_ies,
1943 data->assoc_info.req_ies_len,
1944 data->assoc_info.reassoc);
1945 return;
1946 }
1947 #endif /* CONFIG_AP */
1948
1949 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1950 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1951 return;
1952
1953 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1954 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1955 wpa_supplicant_deauthenticate(
1956 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1957 return;
1958 }
1959
1960 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1961 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1962 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1963 MACSTR, MAC2STR(bssid));
1964 random_add_randomness(bssid, ETH_ALEN);
1965 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1966 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1967 wpas_notify_bssid_changed(wpa_s);
1968
1969 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1970 wpa_clear_keys(wpa_s, bssid);
1971 }
1972 if (wpa_supplicant_select_config(wpa_s) < 0) {
1973 wpa_supplicant_deauthenticate(
1974 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1975 return;
1976 }
1977
1978 if (wpa_s->conf->ap_scan == 1 &&
1979 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1980 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1981 wpa_msg(wpa_s, MSG_WARNING,
1982 "WPA/RSN IEs not updated");
1983 }
1984 }
1985
1986 #ifdef CONFIG_SME
1987 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1988 wpa_s->sme.prev_bssid_set = 1;
1989 wpa_s->sme.last_unprot_disconnect.sec = 0;
1990 #endif /* CONFIG_SME */
1991
1992 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1993 if (wpa_s->current_ssid) {
1994 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1995 * initialized before association, but for other modes,
1996 * initialize PC/SC here, if the current configuration needs
1997 * smartcard or SIM/USIM. */
1998 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1999 }
2000 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
2001 if (wpa_s->l2)
2002 l2_packet_notify_auth_start(wpa_s->l2);
2003
2004 /*
2005 * Set portEnabled first to FALSE in order to get EAP state machine out
2006 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2007 * state machine may transit to AUTHENTICATING state based on obsolete
2008 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2009 * AUTHENTICATED without ever giving chance to EAP state machine to
2010 * reset the state.
2011 */
2012 if (!ft_completed) {
2013 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2014 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2015 }
2016 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2017 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2018 /* 802.1X::portControl = Auto */
2019 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2020 wpa_s->eapol_received = 0;
2021 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2022 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2023 (wpa_s->current_ssid &&
2024 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2025 if (wpa_s->current_ssid &&
2026 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2027 (wpa_s->drv_flags &
2028 WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2029 /*
2030 * Set the key after having received joined-IBSS event
2031 * from the driver.
2032 */
2033 wpa_supplicant_set_wpa_none_key(wpa_s,
2034 wpa_s->current_ssid);
2035 }
2036 wpa_supplicant_cancel_auth_timeout(wpa_s);
2037 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2038 } else if (!ft_completed) {
2039 /* Timeout for receiving the first EAPOL packet */
2040 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2041 }
2042 wpa_supplicant_cancel_scan(wpa_s);
2043
2044 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2045 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2046 /*
2047 * We are done; the driver will take care of RSN 4-way
2048 * handshake.
2049 */
2050 wpa_supplicant_cancel_auth_timeout(wpa_s);
2051 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2052 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2053 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2054 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2055 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2056 /*
2057 * The driver will take care of RSN 4-way handshake, so we need
2058 * to allow EAPOL supplicant to complete its work without
2059 * waiting for WPA supplicant.
2060 */
2061 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2062 } else if (ft_completed) {
2063 /*
2064 * FT protocol completed - make sure EAPOL state machine ends
2065 * up in authenticated.
2066 */
2067 wpa_supplicant_cancel_auth_timeout(wpa_s);
2068 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2069 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2070 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2071 }
2072
2073 wpa_s->last_eapol_matches_bssid = 0;
2074
2075 if (wpa_s->pending_eapol_rx) {
2076 struct os_reltime now, age;
2077 os_get_reltime(&now);
2078 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2079 if (age.sec == 0 && age.usec < 100000 &&
2080 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2081 0) {
2082 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2083 "frame that was received just before "
2084 "association notification");
2085 wpa_supplicant_rx_eapol(
2086 wpa_s, wpa_s->pending_eapol_rx_src,
2087 wpabuf_head(wpa_s->pending_eapol_rx),
2088 wpabuf_len(wpa_s->pending_eapol_rx));
2089 }
2090 wpabuf_free(wpa_s->pending_eapol_rx);
2091 wpa_s->pending_eapol_rx = NULL;
2092 }
2093
2094 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2095 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2096 wpa_s->current_ssid &&
2097 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2098 /* Set static WEP keys again */
2099 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2100 }
2101
2102 #ifdef CONFIG_IBSS_RSN
2103 if (wpa_s->current_ssid &&
2104 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2105 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2106 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2107 wpa_s->ibss_rsn == NULL) {
2108 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2109 if (!wpa_s->ibss_rsn) {
2110 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2111 wpa_supplicant_deauthenticate(
2112 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2113 return;
2114 }
2115
2116 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2117 }
2118 #endif /* CONFIG_IBSS_RSN */
2119
2120 wpas_wps_notify_assoc(wpa_s, bssid);
2121
2122 if (data) {
2123 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2124 data->assoc_info.resp_ies_len,
2125 &data->assoc_info.wmm_params);
2126
2127 if (wpa_s->reassoc_same_bss)
2128 wmm_ac_restore_tspecs(wpa_s);
2129 }
2130 }
2131
2132
2133 static int disconnect_reason_recoverable(u16 reason_code)
2134 {
2135 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2136 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2137 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2138 }
2139
2140
2141 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2142 u16 reason_code,
2143 int locally_generated)
2144 {
2145 const u8 *bssid;
2146
2147 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2148 /*
2149 * At least Host AP driver and a Prism3 card seemed to be
2150 * generating streams of disconnected events when configuring
2151 * IBSS for WPA-None. Ignore them for now.
2152 */
2153 return;
2154 }
2155
2156 bssid = wpa_s->bssid;
2157 if (is_zero_ether_addr(bssid))
2158 bssid = wpa_s->pending_bssid;
2159
2160 if (!is_zero_ether_addr(bssid) ||
2161 wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2162 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2163 " reason=%d%s",
2164 MAC2STR(bssid), reason_code,
2165 locally_generated ? " locally_generated=1" : "");
2166 }
2167 }
2168
2169
2170 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2171 int locally_generated)
2172 {
2173 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2174 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2175 return 0; /* Not in 4-way handshake with PSK */
2176
2177 /*
2178 * It looks like connection was lost while trying to go through PSK
2179 * 4-way handshake. Filter out known disconnection cases that are caused
2180 * by something else than PSK mismatch to avoid confusing reports.
2181 */
2182
2183 if (locally_generated) {
2184 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2185 return 0;
2186 }
2187
2188 return 1;
2189 }
2190
2191
2192 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2193 u16 reason_code,
2194 int locally_generated)
2195 {
2196 const u8 *bssid;
2197 int authenticating;
2198 u8 prev_pending_bssid[ETH_ALEN];
2199 struct wpa_bss *fast_reconnect = NULL;
2200 struct wpa_ssid *fast_reconnect_ssid = NULL;
2201 struct wpa_ssid *last_ssid;
2202
2203 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2204 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2205
2206 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2207 /*
2208 * At least Host AP driver and a Prism3 card seemed to be
2209 * generating streams of disconnected events when configuring
2210 * IBSS for WPA-None. Ignore them for now.
2211 */
2212 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2213 "IBSS/WPA-None mode");
2214 return;
2215 }
2216
2217 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2218 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2219 "pre-shared key may be incorrect");
2220 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2221 return; /* P2P group removed */
2222 wpas_auth_failed(wpa_s, "WRONG_KEY");
2223 }
2224 if (!wpa_s->disconnected &&
2225 (!wpa_s->auto_reconnect_disabled ||
2226 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2227 wpas_wps_searching(wpa_s))) {
2228 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2229 "reconnect (wps=%d/%d wpa_state=%d)",
2230 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2231 wpas_wps_searching(wpa_s),
2232 wpa_s->wpa_state);
2233 if (wpa_s->wpa_state == WPA_COMPLETED &&
2234 wpa_s->current_ssid &&
2235 wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2236 !locally_generated &&
2237 disconnect_reason_recoverable(reason_code)) {
2238 /*
2239 * It looks like the AP has dropped association with
2240 * us, but could allow us to get back in. Try to
2241 * reconnect to the same BSS without full scan to save
2242 * time for some common cases.
2243 */
2244 fast_reconnect = wpa_s->current_bss;
2245 fast_reconnect_ssid = wpa_s->current_ssid;
2246 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2247 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2248 else
2249 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2250 "immediate scan");
2251 } else {
2252 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2253 "try to re-connect");
2254 wpa_s->reassociate = 0;
2255 wpa_s->disconnected = 1;
2256 wpa_supplicant_cancel_sched_scan(wpa_s);
2257 }
2258 bssid = wpa_s->bssid;
2259 if (is_zero_ether_addr(bssid))
2260 bssid = wpa_s->pending_bssid;
2261 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2262 wpas_connection_failed(wpa_s, bssid);
2263 wpa_sm_notify_disassoc(wpa_s->wpa);
2264 if (locally_generated)
2265 wpa_s->disconnect_reason = -reason_code;
2266 else
2267 wpa_s->disconnect_reason = reason_code;
2268 wpas_notify_disconnect_reason(wpa_s);
2269 if (wpa_supplicant_dynamic_keys(wpa_s)) {
2270 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2271 wpa_clear_keys(wpa_s, wpa_s->bssid);
2272 }
2273 last_ssid = wpa_s->current_ssid;
2274 wpa_supplicant_mark_disassoc(wpa_s);
2275
2276 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2277 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2278 wpa_s->current_ssid = last_ssid;
2279 }
2280
2281 if (fast_reconnect &&
2282 !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2283 !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2284 !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2285 fast_reconnect->ssid_len) &&
2286 !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2287 #ifndef CONFIG_NO_SCAN_PROCESSING
2288 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2289 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2290 fast_reconnect_ssid) < 0) {
2291 /* Recover through full scan */
2292 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2293 }
2294 #endif /* CONFIG_NO_SCAN_PROCESSING */
2295 } else if (fast_reconnect) {
2296 /*
2297 * Could not reconnect to the same BSS due to network being
2298 * disabled. Use a new scan to match the alternative behavior
2299 * above, i.e., to continue automatic reconnection attempt in a
2300 * way that enforces disabled network rules.
2301 */
2302 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2303 }
2304 }
2305
2306
2307 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2308 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2309 {
2310 struct wpa_supplicant *wpa_s = eloop_ctx;
2311
2312 if (!wpa_s->pending_mic_error_report)
2313 return;
2314
2315 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2316 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2317 wpa_s->pending_mic_error_report = 0;
2318 }
2319 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2320
2321
2322 static void
2323 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2324 union wpa_event_data *data)
2325 {
2326 int pairwise;
2327 struct os_reltime t;
2328
2329 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2330 pairwise = (data && data->michael_mic_failure.unicast);
2331 os_get_reltime(&t);
2332 if ((wpa_s->last_michael_mic_error.sec &&
2333 !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2334 wpa_s->pending_mic_error_report) {
2335 if (wpa_s->pending_mic_error_report) {
2336 /*
2337 * Send the pending MIC error report immediately since
2338 * we are going to start countermeasures and AP better
2339 * do the same.
2340 */
2341 wpa_sm_key_request(wpa_s->wpa, 1,
2342 wpa_s->pending_mic_error_pairwise);
2343 }
2344
2345 /* Send the new MIC error report immediately since we are going
2346 * to start countermeasures and AP better do the same.
2347 */
2348 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2349
2350 /* initialize countermeasures */
2351 wpa_s->countermeasures = 1;
2352
2353 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2354
2355 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2356
2357 /*
2358 * Need to wait for completion of request frame. We do not get
2359 * any callback for the message completion, so just wait a
2360 * short while and hope for the best. */
2361 os_sleep(0, 10000);
2362
2363 wpa_drv_set_countermeasures(wpa_s, 1);
2364 wpa_supplicant_deauthenticate(wpa_s,
2365 WLAN_REASON_MICHAEL_MIC_FAILURE);
2366 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2367 wpa_s, NULL);
2368 eloop_register_timeout(60, 0,
2369 wpa_supplicant_stop_countermeasures,
2370 wpa_s, NULL);
2371 /* TODO: mark the AP rejected for 60 second. STA is
2372 * allowed to associate with another AP.. */
2373 } else {
2374 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2375 if (wpa_s->mic_errors_seen) {
2376 /*
2377 * Reduce the effectiveness of Michael MIC error
2378 * reports as a means for attacking against TKIP if
2379 * more than one MIC failure is noticed with the same
2380 * PTK. We delay the transmission of the reports by a
2381 * random time between 0 and 60 seconds in order to
2382 * force the attacker wait 60 seconds before getting
2383 * the information on whether a frame resulted in a MIC
2384 * failure.
2385 */
2386 u8 rval[4];
2387 int sec;
2388
2389 if (os_get_random(rval, sizeof(rval)) < 0)
2390 sec = os_random() % 60;
2391 else
2392 sec = WPA_GET_BE32(rval) % 60;
2393 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2394 "report %d seconds", sec);
2395 wpa_s->pending_mic_error_report = 1;
2396 wpa_s->pending_mic_error_pairwise = pairwise;
2397 eloop_cancel_timeout(
2398 wpa_supplicant_delayed_mic_error_report,
2399 wpa_s, NULL);
2400 eloop_register_timeout(
2401 sec, os_random() % 1000000,
2402 wpa_supplicant_delayed_mic_error_report,
2403 wpa_s, NULL);
2404 } else {
2405 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2406 }
2407 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2408 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2409 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2410 }
2411 wpa_s->last_michael_mic_error = t;
2412 wpa_s->mic_errors_seen++;
2413 }
2414
2415
2416 #ifdef CONFIG_TERMINATE_ONLASTIF
2417 static int any_interfaces(struct wpa_supplicant *head)
2418 {
2419 struct wpa_supplicant *wpa_s;
2420
2421 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2422 if (!wpa_s->interface_removed)
2423 return 1;
2424 return 0;
2425 }
2426 #endif /* CONFIG_TERMINATE_ONLASTIF */
2427
2428
2429 static void
2430 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2431 union wpa_event_data *data)
2432 {
2433 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2434 return;
2435
2436 switch (data->interface_status.ievent) {
2437 case EVENT_INTERFACE_ADDED:
2438 if (!wpa_s->interface_removed)
2439 break;
2440 wpa_s->interface_removed = 0;
2441 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2442 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2443 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2444 "driver after interface was added");
2445 }
2446 break;
2447 case EVENT_INTERFACE_REMOVED:
2448 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2449 wpa_s->interface_removed = 1;
2450 wpa_supplicant_mark_disassoc(wpa_s);
2451 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2452 l2_packet_deinit(wpa_s->l2);
2453 wpa_s->l2 = NULL;
2454 #ifdef CONFIG_TERMINATE_ONLASTIF
2455 /* check if last interface */
2456 if (!any_interfaces(wpa_s->global->ifaces))
2457 eloop_terminate();
2458 #endif /* CONFIG_TERMINATE_ONLASTIF */
2459 break;
2460 }
2461 }
2462
2463
2464 #ifdef CONFIG_PEERKEY
2465 static void
2466 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2467 union wpa_event_data *data)
2468 {
2469 if (data == NULL)
2470 return;
2471 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2472 }
2473 #endif /* CONFIG_PEERKEY */
2474
2475
2476 #ifdef CONFIG_TDLS
2477 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2478 union wpa_event_data *data)
2479 {
2480 if (data == NULL)
2481 return;
2482 switch (data->tdls.oper) {
2483 case TDLS_REQUEST_SETUP:
2484 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2485 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2486 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2487 else
2488 wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2489 break;
2490 case TDLS_REQUEST_TEARDOWN:
2491 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2492 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2493 data->tdls.reason_code);
2494 else
2495 wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2496 data->tdls.peer);
2497 break;
2498 case TDLS_REQUEST_DISCOVER:
2499 wpa_tdls_send_discovery_request(wpa_s->wpa,
2500 data->tdls.peer);
2501 break;
2502 }
2503 }
2504 #endif /* CONFIG_TDLS */
2505
2506
2507 #ifdef CONFIG_WNM
2508 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2509 union wpa_event_data *data)
2510 {
2511 if (data == NULL)
2512 return;
2513 switch (data->wnm.oper) {
2514 case WNM_OPER_SLEEP:
2515 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2516 "(action=%d, intval=%d)",
2517 data->wnm.sleep_action, data->wnm.sleep_intval);
2518 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2519 data->wnm.sleep_intval, NULL);
2520 break;
2521 }
2522 }
2523 #endif /* CONFIG_WNM */
2524
2525
2526 #ifdef CONFIG_IEEE80211R
2527 static void
2528 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2529 union wpa_event_data *data)
2530 {
2531 if (data == NULL)
2532 return;
2533
2534 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2535 data->ft_ies.ies_len,
2536 data->ft_ies.ft_action,
2537 data->ft_ies.target_ap,
2538 data->ft_ies.ric_ies,
2539 data->ft_ies.ric_ies_len) < 0) {
2540 /* TODO: prevent MLME/driver from trying to associate? */
2541 }
2542 }
2543 #endif /* CONFIG_IEEE80211R */
2544
2545
2546 #ifdef CONFIG_IBSS_RSN
2547 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2548 union wpa_event_data *data)
2549 {
2550 struct wpa_ssid *ssid;
2551 if (wpa_s->wpa_state < WPA_ASSOCIATED)
2552 return;
2553 if (data == NULL)
2554 return;
2555 ssid = wpa_s->current_ssid;
2556 if (ssid == NULL)
2557 return;
2558 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2559 return;
2560
2561 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2562 }
2563
2564
2565 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2566 union wpa_event_data *data)
2567 {
2568 struct wpa_ssid *ssid = wpa_s->current_ssid;
2569
2570 if (ssid == NULL)
2571 return;
2572
2573 /* check if the ssid is correctly configured as IBSS/RSN */
2574 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2575 return;
2576
2577 ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2578 data->rx_mgmt.frame_len);
2579 }
2580 #endif /* CONFIG_IBSS_RSN */
2581
2582
2583 #ifdef CONFIG_IEEE80211R
2584 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2585 size_t len)
2586 {
2587 const u8 *sta_addr, *target_ap_addr;
2588 u16 status;
2589
2590 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2591 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2592 return; /* only SME case supported for now */
2593 if (len < 1 + 2 * ETH_ALEN + 2)
2594 return;
2595 if (data[0] != 2)
2596 return; /* Only FT Action Response is supported for now */
2597 sta_addr = data + 1;
2598 target_ap_addr = data + 1 + ETH_ALEN;
2599 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2600 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2601 MACSTR " TargetAP " MACSTR " status %u",
2602 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2603
2604 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2605 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2606 " in FT Action Response", MAC2STR(sta_addr));
2607 return;
2608 }
2609
2610 if (status) {
2611 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2612 "failure (status code %d)", status);
2613 /* TODO: report error to FT code(?) */
2614 return;
2615 }
2616
2617 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2618 len - (1 + 2 * ETH_ALEN + 2), 1,
2619 target_ap_addr, NULL, 0) < 0)
2620 return;
2621
2622 #ifdef CONFIG_SME
2623 {
2624 struct wpa_bss *bss;
2625 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2626 if (bss)
2627 wpa_s->sme.freq = bss->freq;
2628 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2629 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2630 WLAN_AUTH_FT);
2631 }
2632 #endif /* CONFIG_SME */
2633 }
2634 #endif /* CONFIG_IEEE80211R */
2635
2636
2637 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2638 struct unprot_deauth *e)
2639 {
2640 #ifdef CONFIG_IEEE80211W
2641 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2642 "dropped: " MACSTR " -> " MACSTR
2643 " (reason code %u)",
2644 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2645 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2646 #endif /* CONFIG_IEEE80211W */
2647 }
2648
2649
2650 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2651 struct unprot_disassoc *e)
2652 {
2653 #ifdef CONFIG_IEEE80211W
2654 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2655 "dropped: " MACSTR " -> " MACSTR
2656 " (reason code %u)",
2657 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2658 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2659 #endif /* CONFIG_IEEE80211W */
2660 }
2661
2662
2663 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2664 u16 reason_code, int locally_generated,
2665 const u8 *ie, size_t ie_len, int deauth)
2666 {
2667 #ifdef CONFIG_AP
2668 if (wpa_s->ap_iface && addr) {
2669 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2670 return;
2671 }
2672
2673 if (wpa_s->ap_iface) {
2674 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2675 return;
2676 }
2677 #endif /* CONFIG_AP */
2678
2679 if (!locally_generated)
2680 wpa_s->own_disconnect_req = 0;
2681
2682 wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2683
2684 if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2685 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2686 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2687 eapol_sm_failed(wpa_s->eapol))) &&
2688 !wpa_s->eap_expected_failure))
2689 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2690
2691 #ifdef CONFIG_P2P
2692 if (deauth && reason_code > 0) {
2693 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2694 locally_generated) > 0) {
2695 /*
2696 * The interface was removed, so cannot continue
2697 * processing any additional operations after this.
2698 */
2699 return;
2700 }
2701 }
2702 #endif /* CONFIG_P2P */
2703
2704 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2705 locally_generated);
2706 }
2707
2708
2709 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2710 struct disassoc_info *info)
2711 {
2712 u16 reason_code = 0;
2713 int locally_generated = 0;
2714 const u8 *addr = NULL;
2715 const u8 *ie = NULL;
2716 size_t ie_len = 0;
2717
2718 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2719
2720 if (info) {
2721 addr = info->addr;
2722 ie = info->ie;
2723 ie_len = info->ie_len;
2724 reason_code = info->reason_code;
2725 locally_generated = info->locally_generated;
2726 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2727 locally_generated ? " (locally generated)" : "");
2728 if (addr)
2729 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2730 MAC2STR(addr));
2731 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2732 ie, ie_len);
2733 }
2734
2735 #ifdef CONFIG_AP
2736 if (wpa_s->ap_iface && info && info->addr) {
2737 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2738 return;
2739 }
2740
2741 if (wpa_s->ap_iface) {
2742 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2743 return;
2744 }
2745 #endif /* CONFIG_AP */
2746
2747 #ifdef CONFIG_P2P
2748 if (info) {
2749 wpas_p2p_disassoc_notif(
2750 wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2751 locally_generated);
2752 }
2753 #endif /* CONFIG_P2P */
2754
2755 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2756 sme_event_disassoc(wpa_s, info);
2757
2758 wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2759 ie, ie_len, 0);
2760 }
2761
2762
2763 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2764 struct deauth_info *info)
2765 {
2766 u16 reason_code = 0;
2767 int locally_generated = 0;
2768 const u8 *addr = NULL;
2769 const u8 *ie = NULL;
2770 size_t ie_len = 0;
2771
2772 wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2773
2774 if (info) {
2775 addr = info->addr;
2776 ie = info->ie;
2777 ie_len = info->ie_len;
2778 reason_code = info->reason_code;
2779 locally_generated = info->locally_generated;
2780 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2781 reason_code,
2782 locally_generated ? " (locally generated)" : "");
2783 if (addr) {
2784 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2785 MAC2STR(addr));
2786 }
2787 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2788 ie, ie_len);
2789 }
2790
2791 wpa_reset_ft_completed(wpa_s->wpa);
2792
2793 wpas_event_disconnect(wpa_s, addr, reason_code,
2794 locally_generated, ie, ie_len, 1);
2795 }
2796
2797
2798 static const char * reg_init_str(enum reg_change_initiator init)
2799 {
2800 switch (init) {
2801 case REGDOM_SET_BY_CORE:
2802 return "CORE";
2803 case REGDOM_SET_BY_USER:
2804 return "USER";
2805 case REGDOM_SET_BY_DRIVER:
2806 return "DRIVER";
2807 case REGDOM_SET_BY_COUNTRY_IE:
2808 return "COUNTRY_IE";
2809 case REGDOM_BEACON_HINT:
2810 return "BEACON_HINT";
2811 }
2812 return "?";
2813 }
2814
2815
2816 static const char * reg_type_str(enum reg_type type)
2817 {
2818 switch (type) {
2819 case REGDOM_TYPE_UNKNOWN:
2820 return "UNKNOWN";
2821 case REGDOM_TYPE_COUNTRY:
2822 return "COUNTRY";
2823 case REGDOM_TYPE_WORLD:
2824 return "WORLD";
2825 case REGDOM_TYPE_CUSTOM_WORLD:
2826 return "CUSTOM_WORLD";
2827 case REGDOM_TYPE_INTERSECTION:
2828 return "INTERSECTION";
2829 }
2830 return "?";
2831 }
2832
2833
2834 static void wpa_supplicant_update_channel_list(
2835 struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2836 {
2837 struct wpa_supplicant *ifs;
2838
2839 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2840 reg_init_str(info->initiator), reg_type_str(info->type),
2841 info->alpha2[0] ? " alpha2=" : "",
2842 info->alpha2[0] ? info->alpha2 : "");
2843
2844 if (wpa_s->drv_priv == NULL)
2845 return; /* Ignore event during drv initialization */
2846
2847 free_hw_features(wpa_s);
2848 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2849 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2850
2851 wpas_p2p_update_channel_list(wpa_s);
2852
2853 /*
2854 * Check other interfaces to see if they share the same radio. If
2855 * so, they get updated with this same hw mode info.
2856 */
2857 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2858 radio_list) {
2859 if (ifs != wpa_s) {
2860 wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2861 ifs->ifname);
2862 free_hw_features(ifs);
2863 ifs->hw.modes = wpa_drv_get_hw_feature_data(
2864 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2865 }
2866 }
2867 }
2868
2869
2870 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2871 const u8 *frame, size_t len, int freq,
2872 int rssi)
2873 {
2874 const struct ieee80211_mgmt *mgmt;
2875 const u8 *payload;
2876 size_t plen;
2877 u8 category;
2878
2879 if (len < IEEE80211_HDRLEN + 2)
2880 return;
2881
2882 mgmt = (const struct ieee80211_mgmt *) frame;
2883 payload = frame + IEEE80211_HDRLEN;
2884 category = *payload++;
2885 plen = len - IEEE80211_HDRLEN - 1;
2886
2887 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2888 " Category=%u DataLen=%d freq=%d MHz",
2889 MAC2STR(mgmt->sa), category, (int) plen, freq);
2890
2891 if (category == WLAN_ACTION_WMM) {
2892 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
2893 return;
2894 }
2895
2896 #ifdef CONFIG_IEEE80211R
2897 if (category == WLAN_ACTION_FT) {
2898 ft_rx_action(wpa_s, payload, plen);
2899 return;
2900 }
2901 #endif /* CONFIG_IEEE80211R */
2902
2903 #ifdef CONFIG_IEEE80211W
2904 #ifdef CONFIG_SME
2905 if (category == WLAN_ACTION_SA_QUERY) {
2906 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2907 return;
2908 }
2909 #endif /* CONFIG_SME */
2910 #endif /* CONFIG_IEEE80211W */
2911
2912 #ifdef CONFIG_WNM
2913 if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2914 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2915 return;
2916 }
2917 #endif /* CONFIG_WNM */
2918
2919 #ifdef CONFIG_GAS
2920 if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2921 mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2922 gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2923 mgmt->u.action.category,
2924 payload, plen, freq) == 0)
2925 return;
2926 #endif /* CONFIG_GAS */
2927
2928 #ifdef CONFIG_TDLS
2929 if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2930 payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2931 wpa_dbg(wpa_s, MSG_DEBUG,
2932 "TDLS: Received Discovery Response from " MACSTR,
2933 MAC2STR(mgmt->sa));
2934 return;
2935 }
2936 #endif /* CONFIG_TDLS */
2937
2938 #ifdef CONFIG_INTERWORKING
2939 if (category == WLAN_ACTION_QOS && plen >= 1 &&
2940 payload[0] == QOS_QOS_MAP_CONFIG) {
2941 const u8 *pos = payload + 1;
2942 size_t qlen = plen - 1;
2943 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2944 MACSTR, MAC2STR(mgmt->sa));
2945 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2946 qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2947 pos[1] <= qlen - 2 && pos[1] >= 16)
2948 wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2949 return;
2950 }
2951 #endif /* CONFIG_INTERWORKING */
2952
2953 if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
2954 payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
2955 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
2956 return;
2957 }
2958
2959 if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
2960 payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
2961 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
2962 payload + 1, plen - 1,
2963 rssi);
2964 return;
2965 }
2966
2967 wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2968 category, payload, plen, freq);
2969 if (wpa_s->ifmsh)
2970 mesh_mpm_action_rx(wpa_s, mgmt, len);
2971 }
2972
2973
2974 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2975 union wpa_event_data *event)
2976 {
2977 #ifdef CONFIG_P2P
2978 struct wpa_supplicant *ifs;
2979 #endif /* CONFIG_P2P */
2980 struct wpa_freq_range_list *list;
2981 char *str = NULL;
2982
2983 list = &event->freq_range;
2984
2985 if (list->num)
2986 str = freq_range_list_str(list);
2987 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2988 str ? str : "");
2989
2990 #ifdef CONFIG_P2P
2991 if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2992 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2993 __func__);
2994 } else {
2995 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2996 wpas_p2p_update_channel_list(wpa_s);
2997 }
2998
2999 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3000 int freq;
3001 if (!ifs->current_ssid ||
3002 !ifs->current_ssid->p2p_group ||
3003 (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
3004 ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
3005 continue;
3006
3007 freq = ifs->current_ssid->frequency;
3008 if (!freq_range_list_includes(list, freq)) {
3009 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
3010 freq);
3011 continue;
3012 }
3013
3014 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
3015 freq);
3016 /* TODO: Consider using CSA or removing the group within
3017 * wpa_supplicant */
3018 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
3019 }
3020 #endif /* CONFIG_P2P */
3021
3022 os_free(str);
3023 }
3024
3025
3026 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3027 union wpa_event_data *data)
3028 {
3029 wpa_dbg(wpa_s, MSG_DEBUG,
3030 "Connection authorized by device, previous state %d",
3031 wpa_s->wpa_state);
3032 if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3033 wpa_supplicant_cancel_auth_timeout(wpa_s);
3034 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3035 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3036 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3037 }
3038 wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3039 wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3040 data->assoc_info.ptk_kck_len,
3041 data->assoc_info.ptk_kek,
3042 data->assoc_info.ptk_kek_len);
3043 }
3044
3045
3046 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3047 union wpa_event_data *data)
3048 {
3049 struct wpa_supplicant *wpa_s = ctx;
3050
3051 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3052 event != EVENT_INTERFACE_ENABLED &&
3053 event != EVENT_INTERFACE_STATUS &&
3054 event != EVENT_SCHED_SCAN_STOPPED) {
3055 wpa_dbg(wpa_s, MSG_DEBUG,
3056 "Ignore event %s (%d) while interface is disabled",
3057 event_to_string(event), event);
3058 return;
3059 }
3060
3061 #ifndef CONFIG_NO_STDOUT_DEBUG
3062 {
3063 int level = MSG_DEBUG;
3064
3065 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3066 const struct ieee80211_hdr *hdr;
3067 u16 fc;
3068 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3069 fc = le_to_host16(hdr->frame_control);
3070 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3071 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3072 level = MSG_EXCESSIVE;
3073 }
3074
3075 wpa_dbg(wpa_s, level, "Event %s (%d) received",
3076 event_to_string(event), event);
3077 }
3078 #endif /* CONFIG_NO_STDOUT_DEBUG */
3079
3080 switch (event) {
3081 case EVENT_AUTH:
3082 sme_event_auth(wpa_s, data);
3083 break;
3084 case EVENT_ASSOC:
3085 wpa_supplicant_event_assoc(wpa_s, data);
3086 if (data && data->assoc_info.authorized)
3087 wpa_supplicant_event_assoc_auth(wpa_s, data);
3088 break;
3089 case EVENT_DISASSOC:
3090 wpas_event_disassoc(wpa_s,
3091 data ? &data->disassoc_info : NULL);
3092 break;
3093 case EVENT_DEAUTH:
3094 wpas_event_deauth(wpa_s,
3095 data ? &data->deauth_info : NULL);
3096 break;
3097 case EVENT_MICHAEL_MIC_FAILURE:
3098 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3099 break;
3100 #ifndef CONFIG_NO_SCAN_PROCESSING
3101 case EVENT_SCAN_STARTED:
3102 os_get_reltime(&wpa_s->scan_start_time);
3103 if (wpa_s->own_scan_requested) {
3104 struct os_reltime diff;
3105
3106 os_reltime_sub(&wpa_s->scan_start_time,
3107 &wpa_s->scan_trigger_time, &diff);
3108 wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3109 diff.sec, diff.usec);
3110 wpa_s->own_scan_requested = 0;
3111 wpa_s->own_scan_running = 1;
3112 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3113 wpa_s->manual_scan_use_id) {
3114 wpa_msg_ctrl(wpa_s, MSG_INFO,
3115 WPA_EVENT_SCAN_STARTED "id=%u",
3116 wpa_s->manual_scan_id);
3117 } else {
3118 wpa_msg_ctrl(wpa_s, MSG_INFO,
3119 WPA_EVENT_SCAN_STARTED);
3120 }
3121 } else {
3122 wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3123 wpa_s->radio->external_scan_running = 1;
3124 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3125 }
3126 break;
3127 case EVENT_SCAN_RESULTS:
3128 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3129 struct os_reltime now, diff;
3130 os_get_reltime(&now);
3131 os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3132 wpa_s->scan_start_time.sec = 0;
3133 wpa_s->scan_start_time.usec = 0;
3134 wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3135 diff.sec, diff.usec);
3136 }
3137 if (wpa_supplicant_event_scan_results(wpa_s, data))
3138 break; /* interface may have been removed */
3139 wpa_s->own_scan_running = 0;
3140 wpa_s->radio->external_scan_running = 0;
3141 radio_work_check_next(wpa_s);
3142 break;
3143 #endif /* CONFIG_NO_SCAN_PROCESSING */
3144 case EVENT_ASSOCINFO:
3145 wpa_supplicant_event_associnfo(wpa_s, data);
3146 break;
3147 case EVENT_INTERFACE_STATUS:
3148 wpa_supplicant_event_interface_status(wpa_s, data);
3149 break;
3150 case EVENT_PMKID_CANDIDATE:
3151 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3152 break;
3153 #ifdef CONFIG_PEERKEY
3154 case EVENT_STKSTART:
3155 wpa_supplicant_event_stkstart(wpa_s, data);
3156 break;
3157 #endif /* CONFIG_PEERKEY */
3158 #ifdef CONFIG_TDLS
3159 case EVENT_TDLS:
3160 wpa_supplicant_event_tdls(wpa_s, data);
3161 break;
3162 #endif /* CONFIG_TDLS */
3163 #ifdef CONFIG_WNM
3164 case EVENT_WNM:
3165 wpa_supplicant_event_wnm(wpa_s, data);
3166 break;
3167 #endif /* CONFIG_WNM */
3168 #ifdef CONFIG_IEEE80211R
3169 case EVENT_FT_RESPONSE:
3170 wpa_supplicant_event_ft_response(wpa_s, data);
3171 break;
3172 #endif /* CONFIG_IEEE80211R */
3173 #ifdef CONFIG_IBSS_RSN
3174 case EVENT_IBSS_RSN_START:
3175 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3176 break;
3177 #endif /* CONFIG_IBSS_RSN */
3178 case EVENT_ASSOC_REJECT:
3179 if (data->assoc_reject.bssid)
3180 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3181 "bssid=" MACSTR " status_code=%u",
3182 MAC2STR(data->assoc_reject.bssid),
3183 data->assoc_reject.status_code);
3184 else
3185 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3186 "status_code=%u",
3187 data->assoc_reject.status_code);
3188 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3189 sme_event_assoc_reject(wpa_s, data);
3190 else {
3191 const u8 *bssid = data->assoc_reject.bssid;
3192 if (bssid == NULL || is_zero_ether_addr(bssid))
3193 bssid = wpa_s->pending_bssid;
3194 wpas_connection_failed(wpa_s, bssid);
3195 wpa_supplicant_mark_disassoc(wpa_s);
3196 }
3197 break;
3198 case EVENT_AUTH_TIMED_OUT:
3199 /* It is possible to get this event from earlier connection */
3200 if (wpa_s->current_ssid &&
3201 wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3202 wpa_dbg(wpa_s, MSG_DEBUG,
3203 "Ignore AUTH_TIMED_OUT in mesh configuration");
3204 break;
3205 }
3206 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3207 sme_event_auth_timed_out(wpa_s, data);
3208 break;
3209 case EVENT_ASSOC_TIMED_OUT:
3210 /* It is possible to get this event from earlier connection */
3211 if (wpa_s->current_ssid &&
3212 wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3213 wpa_dbg(wpa_s, MSG_DEBUG,
3214 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3215 break;
3216 }
3217 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3218 sme_event_assoc_timed_out(wpa_s, data);
3219 break;
3220 case EVENT_TX_STATUS:
3221 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3222 " type=%d stype=%d",
3223 MAC2STR(data->tx_status.dst),
3224 data->tx_status.type, data->tx_status.stype);
3225 #ifdef CONFIG_AP
3226 if (wpa_s->ap_iface == NULL) {
3227 #ifdef CONFIG_OFFCHANNEL
3228 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3229 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3230 offchannel_send_action_tx_status(
3231 wpa_s, data->tx_status.dst,
3232 data->tx_status.data,
3233 data->tx_status.data_len,
3234 data->tx_status.ack ?
3235 OFFCHANNEL_SEND_ACTION_SUCCESS :
3236 OFFCHANNEL_SEND_ACTION_NO_ACK);
3237 #endif /* CONFIG_OFFCHANNEL */
3238 break;
3239 }
3240 #endif /* CONFIG_AP */
3241 #ifdef CONFIG_OFFCHANNEL
3242 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3243 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3244 /*
3245 * Catch TX status events for Action frames we sent via group
3246 * interface in GO mode.
3247 */
3248 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3249 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3250 os_memcmp(wpa_s->parent->pending_action_dst,
3251 data->tx_status.dst, ETH_ALEN) == 0) {
3252 offchannel_send_action_tx_status(
3253 wpa_s->parent, data->tx_status.dst,
3254 data->tx_status.data,
3255 data->tx_status.data_len,
3256 data->tx_status.ack ?
3257 OFFCHANNEL_SEND_ACTION_SUCCESS :
3258 OFFCHANNEL_SEND_ACTION_NO_ACK);
3259 break;
3260 }
3261 #endif /* CONFIG_OFFCHANNEL */
3262 #ifdef CONFIG_AP
3263 switch (data->tx_status.type) {
3264 case WLAN_FC_TYPE_MGMT:
3265 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3266 data->tx_status.data_len,
3267 data->tx_status.stype,
3268 data->tx_status.ack);
3269 break;
3270 case WLAN_FC_TYPE_DATA:
3271 ap_tx_status(wpa_s, data->tx_status.dst,
3272 data->tx_status.data,
3273 data->tx_status.data_len,
3274 data->tx_status.ack);
3275 break;
3276 }
3277 #endif /* CONFIG_AP */
3278 break;
3279 #ifdef CONFIG_AP
3280 case EVENT_EAPOL_TX_STATUS:
3281 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3282 data->eapol_tx_status.data,
3283 data->eapol_tx_status.data_len,
3284 data->eapol_tx_status.ack);
3285 break;
3286 case EVENT_DRIVER_CLIENT_POLL_OK:
3287 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3288 break;
3289 case EVENT_RX_FROM_UNKNOWN:
3290 if (wpa_s->ap_iface == NULL)
3291 break;
3292 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3293 data->rx_from_unknown.wds);
3294 break;
3295 case EVENT_CH_SWITCH:
3296 if (!data)
3297 break;
3298 if (!wpa_s->ap_iface) {
3299 wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3300 "event in non-AP mode");
3301 break;
3302 }
3303
3304 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3305 data->ch_switch.ht_enabled,
3306 data->ch_switch.ch_offset,
3307 data->ch_switch.ch_width,
3308 data->ch_switch.cf1,
3309 data->ch_switch.cf2);
3310 break;
3311 #ifdef NEED_AP_MLME
3312 case EVENT_DFS_RADAR_DETECTED:
3313 if (data)
3314 wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
3315 break;
3316 case EVENT_DFS_CAC_STARTED:
3317 if (data)
3318 wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
3319 break;
3320 case EVENT_DFS_CAC_FINISHED:
3321 if (data)
3322 wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
3323 break;
3324 case EVENT_DFS_CAC_ABORTED:
3325 if (data)
3326 wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
3327 break;
3328 case EVENT_DFS_NOP_FINISHED:
3329 if (data)
3330 wpas_event_dfs_cac_nop_finished(wpa_s,
3331 &data->dfs_event);
3332 break;
3333 #endif /* NEED_AP_MLME */
3334 #endif /* CONFIG_AP */
3335 case EVENT_RX_MGMT: {
3336 u16 fc, stype;
3337 const struct ieee80211_mgmt *mgmt;
3338
3339 #ifdef CONFIG_TESTING_OPTIONS
3340 if (wpa_s->ext_mgmt_frame_handling) {
3341 struct rx_mgmt *rx = &data->rx_mgmt;
3342 size_t hex_len = 2 * rx->frame_len + 1;
3343 char *hex = os_malloc(hex_len);
3344 if (hex) {
3345 wpa_snprintf_hex(hex, hex_len,
3346 rx->frame, rx->frame_len);
3347 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3348 rx->freq, rx->datarate, rx->ssi_signal,
3349 hex);
3350 os_free(hex);
3351 }
3352 break;
3353 }
3354 #endif /* CONFIG_TESTING_OPTIONS */
3355
3356 mgmt = (const struct ieee80211_mgmt *)
3357 data->rx_mgmt.frame;
3358 fc = le_to_host16(mgmt->frame_control);
3359 stype = WLAN_FC_GET_STYPE(fc);
3360
3361 #ifdef CONFIG_AP
3362 if (wpa_s->ap_iface == NULL) {
3363 #endif /* CONFIG_AP */
3364 #ifdef CONFIG_P2P
3365 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3366 data->rx_mgmt.frame_len > 24) {
3367 const u8 *src = mgmt->sa;
3368 const u8 *ie = mgmt->u.probe_req.variable;
3369 size_t ie_len = data->rx_mgmt.frame_len -
3370 (mgmt->u.probe_req.variable -
3371 data->rx_mgmt.frame);
3372 wpas_p2p_probe_req_rx(
3373 wpa_s, src, mgmt->da,
3374 mgmt->bssid, ie, ie_len,
3375 data->rx_mgmt.ssi_signal);
3376 break;
3377 }
3378 #endif /* CONFIG_P2P */
3379 #ifdef CONFIG_IBSS_RSN
3380 if (wpa_s->current_ssid &&
3381 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3382 stype == WLAN_FC_STYPE_AUTH &&
3383 data->rx_mgmt.frame_len >= 30) {
3384 wpa_supplicant_event_ibss_auth(wpa_s, data);
3385 break;
3386 }
3387 #endif /* CONFIG_IBSS_RSN */
3388
3389 if (stype == WLAN_FC_STYPE_ACTION) {
3390 wpas_event_rx_mgmt_action(
3391 wpa_s, data->rx_mgmt.frame,
3392 data->rx_mgmt.frame_len,
3393 data->rx_mgmt.freq,
3394 data->rx_mgmt.ssi_signal);
3395 break;
3396 }
3397
3398 if (wpa_s->ifmsh) {
3399 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3400 break;
3401 }
3402
3403 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3404 "management frame in non-AP mode");
3405 break;
3406 #ifdef CONFIG_AP
3407 }
3408
3409 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3410 data->rx_mgmt.frame_len > 24) {
3411 const u8 *ie = mgmt->u.probe_req.variable;
3412 size_t ie_len = data->rx_mgmt.frame_len -
3413 (mgmt->u.probe_req.variable -
3414 data->rx_mgmt.frame);
3415
3416 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3417 mgmt->bssid, ie, ie_len,
3418 data->rx_mgmt.ssi_signal);
3419 }
3420
3421 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3422 #endif /* CONFIG_AP */
3423 break;
3424 }
3425 case EVENT_RX_PROBE_REQ:
3426 if (data->rx_probe_req.sa == NULL ||
3427 data->rx_probe_req.ie == NULL)
3428 break;
3429 #ifdef CONFIG_AP
3430 if (wpa_s->ap_iface) {
3431 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3432 data->rx_probe_req.sa,
3433 data->rx_probe_req.da,
3434 data->rx_probe_req.bssid,
3435 data->rx_probe_req.ie,
3436 data->rx_probe_req.ie_len,
3437 data->rx_probe_req.ssi_signal);
3438 break;
3439 }
3440 #endif /* CONFIG_AP */
3441 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3442 data->rx_probe_req.da,
3443 data->rx_probe_req.bssid,
3444 data->rx_probe_req.ie,
3445 data->rx_probe_req.ie_len,
3446 data->rx_probe_req.ssi_signal);
3447 break;
3448 case EVENT_REMAIN_ON_CHANNEL:
3449 #ifdef CONFIG_OFFCHANNEL
3450 offchannel_remain_on_channel_cb(
3451 wpa_s, data->remain_on_channel.freq,
3452 data->remain_on_channel.duration);
3453 #endif /* CONFIG_OFFCHANNEL */
3454 wpas_p2p_remain_on_channel_cb(
3455 wpa_s, data->remain_on_channel.freq,
3456 data->remain_on_channel.duration);
3457 break;
3458 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3459 #ifdef CONFIG_OFFCHANNEL
3460 offchannel_cancel_remain_on_channel_cb(
3461 wpa_s, data->remain_on_channel.freq);
3462 #endif /* CONFIG_OFFCHANNEL */
3463 wpas_p2p_cancel_remain_on_channel_cb(
3464 wpa_s, data->remain_on_channel.freq);
3465 break;
3466 case EVENT_EAPOL_RX:
3467 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3468 data->eapol_rx.data,
3469 data->eapol_rx.data_len);
3470 break;
3471 case EVENT_SIGNAL_CHANGE:
3472 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3473 "above=%d signal=%d noise=%d txrate=%d",
3474 data->signal_change.above_threshold,
3475 data->signal_change.current_signal,
3476 data->signal_change.current_noise,
3477 data->signal_change.current_txrate);
3478 wpa_bss_update_level(wpa_s->current_bss,
3479 data->signal_change.current_signal);
3480 bgscan_notify_signal_change(
3481 wpa_s, data->signal_change.above_threshold,
3482 data->signal_change.current_signal,
3483 data->signal_change.current_noise,
3484 data->signal_change.current_txrate);
3485 break;
3486 case EVENT_INTERFACE_ENABLED:
3487 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3488 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3489 wpa_supplicant_update_mac_addr(wpa_s);
3490 if (wpa_s->p2p_mgmt) {
3491 wpa_supplicant_set_state(wpa_s,
3492 WPA_DISCONNECTED);
3493 break;
3494 }
3495
3496 #ifdef CONFIG_AP
3497 if (!wpa_s->ap_iface) {
3498 wpa_supplicant_set_state(wpa_s,
3499 WPA_DISCONNECTED);
3500 wpa_s->scan_req = NORMAL_SCAN_REQ;
3501 wpa_supplicant_req_scan(wpa_s, 0, 0);
3502 } else
3503 wpa_supplicant_set_state(wpa_s,
3504 WPA_COMPLETED);
3505 #else /* CONFIG_AP */
3506 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3507 wpa_supplicant_req_scan(wpa_s, 0, 0);
3508 #endif /* CONFIG_AP */
3509 }
3510 break;
3511 case EVENT_INTERFACE_DISABLED:
3512 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3513 #ifdef CONFIG_P2P
3514 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3515 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3516 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3517 /*
3518 * Mark interface disabled if this happens to end up not
3519 * being removed as a separate P2P group interface.
3520 */
3521 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3522 /*
3523 * The interface was externally disabled. Remove
3524 * it assuming an external entity will start a
3525 * new session if needed.
3526 */
3527 if (wpa_s->current_ssid &&
3528 wpa_s->current_ssid->p2p_group)
3529 wpas_p2p_interface_unavailable(wpa_s);
3530 else
3531 wpas_p2p_disconnect(wpa_s);
3532 /*
3533 * wpa_s instance may have been freed, so must not use
3534 * it here anymore.
3535 */
3536 break;
3537 }
3538 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3539 p2p_in_progress(wpa_s->global->p2p) > 1) {
3540 /* This radio work will be cancelled, so clear P2P
3541 * state as well.
3542 */
3543 p2p_stop_find(wpa_s->global->p2p);
3544 }
3545 #endif /* CONFIG_P2P */
3546
3547 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3548 /*
3549 * Indicate disconnection to keep ctrl_iface events
3550 * consistent.
3551 */
3552 wpa_supplicant_event_disassoc(
3553 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3554 }
3555 wpa_supplicant_mark_disassoc(wpa_s);
3556 radio_remove_works(wpa_s, NULL, 0);
3557
3558 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3559 break;
3560 case EVENT_CHANNEL_LIST_CHANGED:
3561 wpa_supplicant_update_channel_list(
3562 wpa_s, &data->channel_list_changed);
3563 break;
3564 case EVENT_INTERFACE_UNAVAILABLE:
3565 wpas_p2p_interface_unavailable(wpa_s);
3566 break;
3567 case EVENT_BEST_CHANNEL:
3568 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3569 "(%d %d %d)",
3570 data->best_chan.freq_24, data->best_chan.freq_5,
3571 data->best_chan.freq_overall);
3572 wpa_s->best_24_freq = data->best_chan.freq_24;
3573 wpa_s->best_5_freq = data->best_chan.freq_5;
3574 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3575 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3576 data->best_chan.freq_5,
3577 data->best_chan.freq_overall);
3578 break;
3579 case EVENT_UNPROT_DEAUTH:
3580 wpa_supplicant_event_unprot_deauth(wpa_s,
3581 &data->unprot_deauth);
3582 break;
3583 case EVENT_UNPROT_DISASSOC:
3584 wpa_supplicant_event_unprot_disassoc(wpa_s,
3585 &data->unprot_disassoc);
3586 break;
3587 case EVENT_STATION_LOW_ACK:
3588 #ifdef CONFIG_AP
3589 if (wpa_s->ap_iface && data)
3590 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3591 data->low_ack.addr);
3592 #endif /* CONFIG_AP */
3593 #ifdef CONFIG_TDLS
3594 if (data)
3595 wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3596 data->low_ack.addr);
3597 #endif /* CONFIG_TDLS */
3598 break;
3599 case EVENT_IBSS_PEER_LOST:
3600 #ifdef CONFIG_IBSS_RSN
3601 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3602 #endif /* CONFIG_IBSS_RSN */
3603 break;
3604 case EVENT_DRIVER_GTK_REKEY:
3605 if (os_memcmp(data->driver_gtk_rekey.bssid,
3606 wpa_s->bssid, ETH_ALEN))
3607 break;
3608 if (!wpa_s->wpa)
3609 break;
3610 wpa_sm_update_replay_ctr(wpa_s->wpa,
3611 data->driver_gtk_rekey.replay_ctr);
3612 break;
3613 case EVENT_SCHED_SCAN_STOPPED:
3614 wpa_s->pno = 0;
3615 wpa_s->sched_scanning = 0;
3616 wpa_supplicant_notify_scanning(wpa_s, 0);
3617
3618 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3619 break;
3620
3621 /*
3622 * Start a new sched scan to continue searching for more SSIDs
3623 * either if timed out or PNO schedule scan is pending.
3624 */
3625 if (wpa_s->sched_scan_timed_out) {
3626 wpa_supplicant_req_sched_scan(wpa_s);
3627 } else if (wpa_s->pno_sched_pending) {
3628 wpa_s->pno_sched_pending = 0;
3629 wpas_start_pno(wpa_s);
3630 }
3631
3632 break;
3633 case EVENT_WPS_BUTTON_PUSHED:
3634 #ifdef CONFIG_WPS
3635 wpas_wps_start_pbc(wpa_s, NULL, 0);
3636 #endif /* CONFIG_WPS */
3637 break;
3638 case EVENT_AVOID_FREQUENCIES:
3639 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3640 break;
3641 case EVENT_CONNECT_FAILED_REASON:
3642 #ifdef CONFIG_AP
3643 if (!wpa_s->ap_iface || !data)
3644 break;
3645 hostapd_event_connect_failed_reason(
3646 wpa_s->ap_iface->bss[0],
3647 data->connect_failed_reason.addr,
3648 data->connect_failed_reason.code);
3649 #endif /* CONFIG_AP */
3650 break;
3651 case EVENT_NEW_PEER_CANDIDATE:
3652 #ifdef CONFIG_MESH
3653 if (!wpa_s->ifmsh || !data)
3654 break;
3655 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
3656 data->mesh_peer.ies,
3657 data->mesh_peer.ie_len);
3658 #endif /* CONFIG_MESH */
3659 break;
3660 default:
3661 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3662 break;
3663 }
3664 }
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