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[thirdparty/hostap.git] / wpa_supplicant / events.c
1 /*
2 * WPA Supplicant - Driver event processing
3 * Copyright (c) 2003-2014, 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
46
47 #ifndef CONFIG_NO_SCAN_PROCESSING
48 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
49 int new_scan, int own_request);
50 #endif /* CONFIG_NO_SCAN_PROCESSING */
51
52
53 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
54 struct wpa_ssid *ssid)
55 {
56 struct os_reltime now;
57
58 if (ssid == NULL || ssid->disabled_until.sec == 0)
59 return 0;
60
61 os_get_reltime(&now);
62 if (ssid->disabled_until.sec > now.sec)
63 return ssid->disabled_until.sec - now.sec;
64
65 wpas_clear_temp_disabled(wpa_s, ssid, 0);
66
67 return 0;
68 }
69
70
71 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
72 {
73 struct wpa_ssid *ssid, *old_ssid;
74 int res;
75
76 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
77 return 0;
78
79 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
80 "information");
81 ssid = wpa_supplicant_get_ssid(wpa_s);
82 if (ssid == NULL) {
83 wpa_msg(wpa_s, MSG_INFO,
84 "No network configuration found for the current AP");
85 return -1;
86 }
87
88 if (wpas_network_disabled(wpa_s, ssid)) {
89 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
90 return -1;
91 }
92
93 if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
94 disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
95 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
96 return -1;
97 }
98
99 res = wpas_temp_disabled(wpa_s, ssid);
100 if (res > 0) {
101 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
102 "disabled for %d second(s)", res);
103 return -1;
104 }
105
106 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
107 "current AP");
108 if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
109 u8 wpa_ie[80];
110 size_t wpa_ie_len = sizeof(wpa_ie);
111 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
112 wpa_ie, &wpa_ie_len) < 0)
113 wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
114 } else {
115 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
116 }
117
118 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
119 eapol_sm_invalidate_cached_session(wpa_s->eapol);
120 old_ssid = wpa_s->current_ssid;
121 wpa_s->current_ssid = ssid;
122 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
123 wpa_supplicant_initiate_eapol(wpa_s);
124 if (old_ssid != wpa_s->current_ssid)
125 wpas_notify_network_changed(wpa_s);
126
127 return 0;
128 }
129
130
131 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
132 {
133 struct wpa_supplicant *wpa_s = eloop_ctx;
134
135 if (wpa_s->countermeasures) {
136 wpa_s->countermeasures = 0;
137 wpa_drv_set_countermeasures(wpa_s, 0);
138 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
139 wpa_supplicant_req_scan(wpa_s, 0, 0);
140 }
141 }
142
143
144 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
145 {
146 int bssid_changed;
147
148 wnm_bss_keep_alive_deinit(wpa_s);
149
150 #ifdef CONFIG_IBSS_RSN
151 ibss_rsn_deinit(wpa_s->ibss_rsn);
152 wpa_s->ibss_rsn = NULL;
153 #endif /* CONFIG_IBSS_RSN */
154
155 #ifdef CONFIG_AP
156 wpa_supplicant_ap_deinit(wpa_s);
157 #endif /* CONFIG_AP */
158
159 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
160 return;
161
162 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
163 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
164 os_memset(wpa_s->bssid, 0, ETH_ALEN);
165 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
166 #ifdef CONFIG_SME
167 wpa_s->sme.prev_bssid_set = 0;
168 #endif /* CONFIG_SME */
169 #ifdef CONFIG_P2P
170 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
171 #endif /* CONFIG_P2P */
172 wpa_s->current_bss = NULL;
173 wpa_s->assoc_freq = 0;
174 #ifdef CONFIG_IEEE80211R
175 #ifdef CONFIG_SME
176 if (wpa_s->sme.ft_ies)
177 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
178 #endif /* CONFIG_SME */
179 #endif /* CONFIG_IEEE80211R */
180
181 if (bssid_changed)
182 wpas_notify_bssid_changed(wpa_s);
183
184 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
185 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
186 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
187 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
188 wpa_s->ap_ies_from_associnfo = 0;
189 wpa_s->current_ssid = NULL;
190 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
191 wpa_s->key_mgmt = 0;
192 }
193
194
195 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
196 {
197 struct wpa_ie_data ie;
198 int pmksa_set = -1;
199 size_t i;
200
201 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
202 ie.pmkid == NULL)
203 return;
204
205 for (i = 0; i < ie.num_pmkid; i++) {
206 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
207 ie.pmkid + i * PMKID_LEN,
208 NULL, NULL, 0);
209 if (pmksa_set == 0) {
210 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
211 break;
212 }
213 }
214
215 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
216 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
217 }
218
219
220 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
221 union wpa_event_data *data)
222 {
223 if (data == NULL) {
224 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
225 "event");
226 return;
227 }
228 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
229 " index=%d preauth=%d",
230 MAC2STR(data->pmkid_candidate.bssid),
231 data->pmkid_candidate.index,
232 data->pmkid_candidate.preauth);
233
234 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
235 data->pmkid_candidate.index,
236 data->pmkid_candidate.preauth);
237 }
238
239
240 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
241 {
242 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
243 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
244 return 0;
245
246 #ifdef IEEE8021X_EAPOL
247 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
248 wpa_s->current_ssid &&
249 !(wpa_s->current_ssid->eapol_flags &
250 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
251 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
252 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
253 * plaintext or static WEP keys). */
254 return 0;
255 }
256 #endif /* IEEE8021X_EAPOL */
257
258 return 1;
259 }
260
261
262 /**
263 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
264 * @wpa_s: pointer to wpa_supplicant data
265 * @ssid: Configuration data for the network
266 * Returns: 0 on success, -1 on failure
267 *
268 * This function is called when starting authentication with a network that is
269 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
270 */
271 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
272 struct wpa_ssid *ssid)
273 {
274 #ifdef IEEE8021X_EAPOL
275 #ifdef PCSC_FUNCS
276 int aka = 0, sim = 0;
277
278 if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL ||
279 wpa_s->conf->external_sim)
280 return 0;
281
282 if (ssid->eap.eap_methods == NULL) {
283 sim = 1;
284 aka = 1;
285 } else {
286 struct eap_method_type *eap = ssid->eap.eap_methods;
287 while (eap->vendor != EAP_VENDOR_IETF ||
288 eap->method != EAP_TYPE_NONE) {
289 if (eap->vendor == EAP_VENDOR_IETF) {
290 if (eap->method == EAP_TYPE_SIM)
291 sim = 1;
292 else if (eap->method == EAP_TYPE_AKA ||
293 eap->method == EAP_TYPE_AKA_PRIME)
294 aka = 1;
295 }
296 eap++;
297 }
298 }
299
300 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
301 sim = 0;
302 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
303 eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
304 NULL)
305 aka = 0;
306
307 if (!sim && !aka) {
308 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
309 "use SIM, but neither EAP-SIM nor EAP-AKA are "
310 "enabled");
311 return 0;
312 }
313
314 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
315 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
316
317 wpa_s->scard = scard_init(NULL);
318 if (wpa_s->scard == NULL) {
319 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
320 "(pcsc-lite)");
321 return -1;
322 }
323 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
324 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
325 #endif /* PCSC_FUNCS */
326 #endif /* IEEE8021X_EAPOL */
327
328 return 0;
329 }
330
331
332 #ifndef CONFIG_NO_SCAN_PROCESSING
333
334 static int has_wep_key(struct wpa_ssid *ssid)
335 {
336 int i;
337
338 for (i = 0; i < NUM_WEP_KEYS; i++) {
339 if (ssid->wep_key_len[i])
340 return 1;
341 }
342
343 return 0;
344 }
345
346
347 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
348 struct wpa_ssid *ssid)
349 {
350 int privacy = 0;
351
352 if (ssid->mixed_cell)
353 return 1;
354
355 #ifdef CONFIG_WPS
356 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
357 return 1;
358 #endif /* CONFIG_WPS */
359
360 if (has_wep_key(ssid))
361 privacy = 1;
362
363 #ifdef IEEE8021X_EAPOL
364 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
365 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
366 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
367 privacy = 1;
368 #endif /* IEEE8021X_EAPOL */
369
370 if (wpa_key_mgmt_wpa(ssid->key_mgmt))
371 privacy = 1;
372
373 if (bss->caps & IEEE80211_CAP_PRIVACY)
374 return privacy;
375 return !privacy;
376 }
377
378
379 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
380 struct wpa_ssid *ssid,
381 struct wpa_bss *bss)
382 {
383 struct wpa_ie_data ie;
384 int proto_match = 0;
385 const u8 *rsn_ie, *wpa_ie;
386 int ret;
387 int wep_ok;
388
389 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
390 if (ret >= 0)
391 return ret;
392
393 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
394 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
395 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
396 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
397 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
398
399 rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
400 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
401 proto_match++;
402
403 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
404 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
405 "failed");
406 break;
407 }
408
409 if (wep_ok &&
410 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
411 {
412 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
413 "in RSN IE");
414 return 1;
415 }
416
417 if (!(ie.proto & ssid->proto)) {
418 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
419 "mismatch");
420 break;
421 }
422
423 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
424 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
425 "cipher mismatch");
426 break;
427 }
428
429 if (!(ie.group_cipher & ssid->group_cipher)) {
430 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
431 "cipher mismatch");
432 break;
433 }
434
435 if (!(ie.key_mgmt & ssid->key_mgmt)) {
436 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
437 "mismatch");
438 break;
439 }
440
441 #ifdef CONFIG_IEEE80211W
442 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
443 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
444 wpa_s->conf->pmf : ssid->ieee80211w) ==
445 MGMT_FRAME_PROTECTION_REQUIRED) {
446 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
447 "frame protection");
448 break;
449 }
450 #endif /* CONFIG_IEEE80211W */
451
452 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
453 return 1;
454 }
455
456 wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
457 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
458 proto_match++;
459
460 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
461 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
462 "failed");
463 break;
464 }
465
466 if (wep_ok &&
467 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
468 {
469 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
470 "in WPA IE");
471 return 1;
472 }
473
474 if (!(ie.proto & ssid->proto)) {
475 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
476 "mismatch");
477 break;
478 }
479
480 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
481 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
482 "cipher mismatch");
483 break;
484 }
485
486 if (!(ie.group_cipher & ssid->group_cipher)) {
487 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
488 "cipher mismatch");
489 break;
490 }
491
492 if (!(ie.key_mgmt & ssid->key_mgmt)) {
493 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
494 "mismatch");
495 break;
496 }
497
498 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
499 return 1;
500 }
501
502 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
503 !rsn_ie) {
504 wpa_dbg(wpa_s, MSG_DEBUG, " allow for non-WPA IEEE 802.1X");
505 return 1;
506 }
507
508 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
509 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
510 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
511 return 0;
512 }
513
514 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
515 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
516 return 1;
517 }
518
519 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with "
520 "WPA/WPA2");
521
522 return 0;
523 }
524
525
526 static int freq_allowed(int *freqs, int freq)
527 {
528 int i;
529
530 if (freqs == NULL)
531 return 1;
532
533 for (i = 0; freqs[i]; i++)
534 if (freqs[i] == freq)
535 return 1;
536 return 0;
537 }
538
539
540 static int ht_supported(const struct hostapd_hw_modes *mode)
541 {
542 if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
543 /*
544 * The driver did not indicate whether it supports HT. Assume
545 * it does to avoid connection issues.
546 */
547 return 1;
548 }
549
550 /*
551 * IEEE Std 802.11n-2009 20.1.1:
552 * An HT non-AP STA shall support all EQM rates for one spatial stream.
553 */
554 return mode->mcs_set[0] == 0xff;
555 }
556
557
558 static int vht_supported(const struct hostapd_hw_modes *mode)
559 {
560 if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) {
561 /*
562 * The driver did not indicate whether it supports VHT. Assume
563 * it does to avoid connection issues.
564 */
565 return 1;
566 }
567
568 /*
569 * A VHT non-AP STA shall support MCS 0-7 for one spatial stream.
570 * TODO: Verify if this complies with the standard
571 */
572 return (mode->vht_mcs_set[0] & 0x3) != 3;
573 }
574
575
576 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
577 {
578 const struct hostapd_hw_modes *mode = NULL, *modes;
579 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
580 const u8 *rate_ie;
581 int i, j, k;
582
583 if (bss->freq == 0)
584 return 1; /* Cannot do matching without knowing band */
585
586 modes = wpa_s->hw.modes;
587 if (modes == NULL) {
588 /*
589 * The driver does not provide any additional information
590 * about the utilized hardware, so allow the connection attempt
591 * to continue.
592 */
593 return 1;
594 }
595
596 for (i = 0; i < wpa_s->hw.num_modes; i++) {
597 for (j = 0; j < modes[i].num_channels; j++) {
598 int freq = modes[i].channels[j].freq;
599 if (freq == bss->freq) {
600 if (mode &&
601 mode->mode == HOSTAPD_MODE_IEEE80211G)
602 break; /* do not allow 802.11b replace
603 * 802.11g */
604 mode = &modes[i];
605 break;
606 }
607 }
608 }
609
610 if (mode == NULL)
611 return 0;
612
613 for (i = 0; i < (int) sizeof(scan_ie); i++) {
614 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
615 if (rate_ie == NULL)
616 continue;
617
618 for (j = 2; j < rate_ie[1] + 2; j++) {
619 int flagged = !!(rate_ie[j] & 0x80);
620 int r = (rate_ie[j] & 0x7f) * 5;
621
622 /*
623 * IEEE Std 802.11n-2009 7.3.2.2:
624 * The new BSS Membership selector value is encoded
625 * like a legacy basic rate, but it is not a rate and
626 * only indicates if the BSS members are required to
627 * support the mandatory features of Clause 20 [HT PHY]
628 * in order to join the BSS.
629 */
630 if (flagged && ((rate_ie[j] & 0x7f) ==
631 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
632 if (!ht_supported(mode)) {
633 wpa_dbg(wpa_s, MSG_DEBUG,
634 " hardware does not support "
635 "HT PHY");
636 return 0;
637 }
638 continue;
639 }
640
641 /* There's also a VHT selector for 802.11ac */
642 if (flagged && ((rate_ie[j] & 0x7f) ==
643 BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
644 if (!vht_supported(mode)) {
645 wpa_dbg(wpa_s, MSG_DEBUG,
646 " hardware does not support "
647 "VHT PHY");
648 return 0;
649 }
650 continue;
651 }
652
653 if (!flagged)
654 continue;
655
656 /* check for legacy basic rates */
657 for (k = 0; k < mode->num_rates; k++) {
658 if (mode->rates[k] == r)
659 break;
660 }
661 if (k == mode->num_rates) {
662 /*
663 * IEEE Std 802.11-2007 7.3.2.2 demands that in
664 * order to join a BSS all required rates
665 * have to be supported by the hardware.
666 */
667 wpa_dbg(wpa_s, MSG_DEBUG, " hardware does "
668 "not support required rate %d.%d Mbps",
669 r / 10, r % 10);
670 return 0;
671 }
672 }
673 }
674
675 return 1;
676 }
677
678
679 static int bss_is_dmg(struct wpa_bss *bss)
680 {
681 return bss->freq > 45000;
682 }
683
684
685 /*
686 * Test whether BSS is in an ESS.
687 * This is done differently in DMG (60 GHz) and non-DMG bands
688 */
689 static int bss_is_ess(struct wpa_bss *bss)
690 {
691 if (bss_is_dmg(bss)) {
692 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
693 IEEE80211_CAP_DMG_AP;
694 }
695
696 return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
697 IEEE80211_CAP_ESS);
698 }
699
700
701 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
702 int i, struct wpa_bss *bss,
703 struct wpa_ssid *group)
704 {
705 u8 wpa_ie_len, rsn_ie_len;
706 int wpa;
707 struct wpa_blacklist *e;
708 const u8 *ie;
709 struct wpa_ssid *ssid;
710
711 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
712 wpa_ie_len = ie ? ie[1] : 0;
713
714 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
715 rsn_ie_len = ie ? ie[1] : 0;
716
717 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
718 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s",
719 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
720 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
721 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
722 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
723 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
724 " p2p" : "");
725
726 e = wpa_blacklist_get(wpa_s, bss->bssid);
727 if (e) {
728 int limit = 1;
729 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
730 /*
731 * When only a single network is enabled, we can
732 * trigger blacklisting on the first failure. This
733 * should not be done with multiple enabled networks to
734 * avoid getting forced to move into a worse ESS on
735 * single error if there are no other BSSes of the
736 * current ESS.
737 */
738 limit = 0;
739 }
740 if (e->count > limit) {
741 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
742 "(count=%d limit=%d)", e->count, limit);
743 return NULL;
744 }
745 }
746
747 if (bss->ssid_len == 0) {
748 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
749 return NULL;
750 }
751
752 if (disallowed_bssid(wpa_s, bss->bssid)) {
753 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed");
754 return NULL;
755 }
756
757 if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
758 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed");
759 return NULL;
760 }
761
762 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
763
764 for (ssid = group; ssid; ssid = ssid->pnext) {
765 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
766 int res;
767
768 if (wpas_network_disabled(wpa_s, ssid)) {
769 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
770 continue;
771 }
772
773 res = wpas_temp_disabled(wpa_s, ssid);
774 if (res > 0) {
775 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled "
776 "temporarily for %d second(s)", res);
777 continue;
778 }
779
780 #ifdef CONFIG_WPS
781 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
782 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
783 "(WPS)");
784 continue;
785 }
786
787 if (wpa && ssid->ssid_len == 0 &&
788 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
789 check_ssid = 0;
790
791 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
792 /* Only allow wildcard SSID match if an AP
793 * advertises active WPS operation that matches
794 * with our mode. */
795 check_ssid = 1;
796 if (ssid->ssid_len == 0 &&
797 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
798 check_ssid = 0;
799 }
800 #endif /* CONFIG_WPS */
801
802 if (ssid->bssid_set && ssid->ssid_len == 0 &&
803 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
804 check_ssid = 0;
805
806 if (check_ssid &&
807 (bss->ssid_len != ssid->ssid_len ||
808 os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
809 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
810 continue;
811 }
812
813 if (ssid->bssid_set &&
814 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
815 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
816 continue;
817 }
818
819 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
820 continue;
821
822 if (!wpa &&
823 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
824 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
825 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
826 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
827 "not allowed");
828 continue;
829 }
830
831 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
832 has_wep_key(ssid)) {
833 wpa_dbg(wpa_s, MSG_DEBUG, " skip - ignore WPA/WPA2 AP for WEP network block");
834 continue;
835 }
836
837 if (!wpa_supplicant_match_privacy(bss, ssid)) {
838 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
839 "mismatch");
840 continue;
841 }
842
843 if (!bss_is_ess(bss)) {
844 wpa_dbg(wpa_s, MSG_DEBUG, " skip - not ESS network");
845 continue;
846 }
847
848 if (!freq_allowed(ssid->freq_list, bss->freq)) {
849 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
850 "allowed");
851 continue;
852 }
853
854 if (!rate_match(wpa_s, bss)) {
855 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do "
856 "not match");
857 continue;
858 }
859
860 #ifdef CONFIG_P2P
861 if (ssid->p2p_group &&
862 !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
863 !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
864 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P IE seen");
865 continue;
866 }
867
868 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
869 struct wpabuf *p2p_ie;
870 u8 dev_addr[ETH_ALEN];
871
872 ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
873 if (ie == NULL) {
874 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P element");
875 continue;
876 }
877 p2p_ie = wpa_bss_get_vendor_ie_multi(
878 bss, P2P_IE_VENDOR_TYPE);
879 if (p2p_ie == NULL) {
880 wpa_dbg(wpa_s, MSG_DEBUG, " skip - could not fetch P2P element");
881 continue;
882 }
883
884 if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
885 || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
886 ETH_ALEN) != 0) {
887 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no matching GO P2P Device Address in P2P element");
888 wpabuf_free(p2p_ie);
889 continue;
890 }
891 wpabuf_free(p2p_ie);
892 }
893
894 /*
895 * TODO: skip the AP if its P2P IE has Group Formation
896 * bit set in the P2P Group Capability Bitmap and we
897 * are not in Group Formation with that device.
898 */
899 #endif /* CONFIG_P2P */
900
901 /* Matching configuration found */
902 return ssid;
903 }
904
905 /* No matching configuration found */
906 return NULL;
907 }
908
909
910 static struct wpa_bss *
911 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
912 struct wpa_ssid *group,
913 struct wpa_ssid **selected_ssid)
914 {
915 unsigned int i;
916
917 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
918 group->priority);
919
920 for (i = 0; i < wpa_s->last_scan_res_used; i++) {
921 struct wpa_bss *bss = wpa_s->last_scan_res[i];
922 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
923 if (!*selected_ssid)
924 continue;
925 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
926 " ssid='%s'",
927 MAC2STR(bss->bssid),
928 wpa_ssid_txt(bss->ssid, bss->ssid_len));
929 return bss;
930 }
931
932 return NULL;
933 }
934
935
936 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
937 struct wpa_ssid **selected_ssid)
938 {
939 struct wpa_bss *selected = NULL;
940 int prio;
941
942 if (wpa_s->last_scan_res == NULL ||
943 wpa_s->last_scan_res_used == 0)
944 return NULL; /* no scan results from last update */
945
946 while (selected == NULL) {
947 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
948 selected = wpa_supplicant_select_bss(
949 wpa_s, wpa_s->conf->pssid[prio],
950 selected_ssid);
951 if (selected)
952 break;
953 }
954
955 if (selected == NULL && wpa_s->blacklist &&
956 !wpa_s->countermeasures) {
957 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
958 "blacklist and try again");
959 wpa_blacklist_clear(wpa_s);
960 wpa_s->blacklist_cleared++;
961 } else if (selected == NULL)
962 break;
963 }
964
965 return selected;
966 }
967
968
969 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
970 int timeout_sec, int timeout_usec)
971 {
972 if (!wpa_supplicant_enabled_networks(wpa_s)) {
973 /*
974 * No networks are enabled; short-circuit request so
975 * we don't wait timeout seconds before transitioning
976 * to INACTIVE state.
977 */
978 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
979 "since there are no enabled networks");
980 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
981 return;
982 }
983
984 wpa_s->scan_for_connection = 1;
985 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
986 }
987
988
989 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
990 struct wpa_bss *selected,
991 struct wpa_ssid *ssid)
992 {
993 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
994 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
995 "PBC session overlap");
996 #ifdef CONFIG_P2P
997 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
998 return -1;
999 #endif /* CONFIG_P2P */
1000
1001 #ifdef CONFIG_WPS
1002 wpas_wps_cancel(wpa_s);
1003 #endif /* CONFIG_WPS */
1004 return -1;
1005 }
1006
1007 wpa_msg(wpa_s, MSG_DEBUG,
1008 "Considering connect request: reassociate: %d selected: "
1009 MACSTR " bssid: " MACSTR " pending: " MACSTR
1010 " wpa_state: %s ssid=%p current_ssid=%p",
1011 wpa_s->reassociate, MAC2STR(selected->bssid),
1012 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1013 wpa_supplicant_state_txt(wpa_s->wpa_state),
1014 ssid, wpa_s->current_ssid);
1015
1016 /*
1017 * Do not trigger new association unless the BSSID has changed or if
1018 * reassociation is requested. If we are in process of associating with
1019 * the selected BSSID, do not trigger new attempt.
1020 */
1021 if (wpa_s->reassociate ||
1022 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1023 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1024 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1025 (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1026 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1027 0) ||
1028 (is_zero_ether_addr(wpa_s->pending_bssid) &&
1029 ssid != wpa_s->current_ssid)))) {
1030 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1031 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1032 return 0;
1033 }
1034 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1035 MAC2STR(selected->bssid));
1036 wpa_supplicant_associate(wpa_s, selected, ssid);
1037 } else {
1038 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1039 "connect with the selected AP");
1040 }
1041
1042 return 0;
1043 }
1044
1045
1046 static struct wpa_ssid *
1047 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1048 {
1049 int prio;
1050 struct wpa_ssid *ssid;
1051
1052 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1053 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1054 {
1055 if (wpas_network_disabled(wpa_s, ssid))
1056 continue;
1057 if (ssid->mode == IEEE80211_MODE_IBSS ||
1058 ssid->mode == IEEE80211_MODE_AP)
1059 return ssid;
1060 }
1061 }
1062 return NULL;
1063 }
1064
1065
1066 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1067 * on BSS added and BSS changed events */
1068 static void wpa_supplicant_rsn_preauth_scan_results(
1069 struct wpa_supplicant *wpa_s)
1070 {
1071 struct wpa_bss *bss;
1072
1073 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1074 return;
1075
1076 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1077 const u8 *ssid, *rsn;
1078
1079 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1080 if (ssid == NULL)
1081 continue;
1082
1083 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1084 if (rsn == NULL)
1085 continue;
1086
1087 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1088 }
1089
1090 }
1091
1092
1093 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1094 struct wpa_bss *selected,
1095 struct wpa_ssid *ssid)
1096 {
1097 struct wpa_bss *current_bss = NULL;
1098 int min_diff;
1099
1100 if (wpa_s->reassociate)
1101 return 1; /* explicit request to reassociate */
1102 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1103 return 1; /* we are not associated; continue */
1104 if (wpa_s->current_ssid == NULL)
1105 return 1; /* unknown current SSID */
1106 if (wpa_s->current_ssid != ssid)
1107 return 1; /* different network block */
1108
1109 if (wpas_driver_bss_selection(wpa_s))
1110 return 0; /* Driver-based roaming */
1111
1112 if (wpa_s->current_ssid->ssid)
1113 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1114 wpa_s->current_ssid->ssid,
1115 wpa_s->current_ssid->ssid_len);
1116 if (!current_bss)
1117 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1118
1119 if (!current_bss)
1120 return 1; /* current BSS not seen in scan results */
1121
1122 if (current_bss == selected)
1123 return 0;
1124
1125 if (selected->last_update_idx > current_bss->last_update_idx)
1126 return 1; /* current BSS not seen in the last scan */
1127
1128 #ifndef CONFIG_NO_ROAMING
1129 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1130 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1131 MAC2STR(current_bss->bssid), current_bss->level);
1132 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1133 MAC2STR(selected->bssid), selected->level);
1134
1135 if (wpa_s->current_ssid->bssid_set &&
1136 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1137 0) {
1138 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1139 "has preferred BSSID");
1140 return 1;
1141 }
1142
1143 if (current_bss->level < 0 && current_bss->level > selected->level) {
1144 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1145 "signal level");
1146 return 0;
1147 }
1148
1149 min_diff = 2;
1150 if (current_bss->level < 0) {
1151 if (current_bss->level < -85)
1152 min_diff = 1;
1153 else if (current_bss->level < -80)
1154 min_diff = 2;
1155 else if (current_bss->level < -75)
1156 min_diff = 3;
1157 else if (current_bss->level < -70)
1158 min_diff = 4;
1159 else
1160 min_diff = 5;
1161 }
1162 if (abs(current_bss->level - selected->level) < min_diff) {
1163 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1164 "in signal level");
1165 return 0;
1166 }
1167
1168 return 1;
1169 #else /* CONFIG_NO_ROAMING */
1170 return 0;
1171 #endif /* CONFIG_NO_ROAMING */
1172 }
1173
1174
1175 /* Return != 0 if no scan results could be fetched or if scan results should not
1176 * be shared with other virtual interfaces. */
1177 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1178 union wpa_event_data *data,
1179 int own_request)
1180 {
1181 struct wpa_scan_results *scan_res = NULL;
1182 int ret = 0;
1183 int ap = 0;
1184 #ifndef CONFIG_NO_RANDOM_POOL
1185 size_t i, num;
1186 #endif /* CONFIG_NO_RANDOM_POOL */
1187
1188 #ifdef CONFIG_AP
1189 if (wpa_s->ap_iface)
1190 ap = 1;
1191 #endif /* CONFIG_AP */
1192
1193 wpa_supplicant_notify_scanning(wpa_s, 0);
1194
1195 scan_res = wpa_supplicant_get_scan_results(wpa_s,
1196 data ? &data->scan_info :
1197 NULL, 1);
1198 if (scan_res == NULL) {
1199 if (wpa_s->conf->ap_scan == 2 || ap ||
1200 wpa_s->scan_res_handler == scan_only_handler)
1201 return -1;
1202 if (!own_request)
1203 return -1;
1204 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1205 "scanning again");
1206 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1207 ret = -1;
1208 goto scan_work_done;
1209 }
1210
1211 #ifndef CONFIG_NO_RANDOM_POOL
1212 num = scan_res->num;
1213 if (num > 10)
1214 num = 10;
1215 for (i = 0; i < num; i++) {
1216 u8 buf[5];
1217 struct wpa_scan_res *res = scan_res->res[i];
1218 buf[0] = res->bssid[5];
1219 buf[1] = res->qual & 0xff;
1220 buf[2] = res->noise & 0xff;
1221 buf[3] = res->level & 0xff;
1222 buf[4] = res->tsf & 0xff;
1223 random_add_randomness(buf, sizeof(buf));
1224 }
1225 #endif /* CONFIG_NO_RANDOM_POOL */
1226
1227 if (own_request && wpa_s->scan_res_handler &&
1228 (wpa_s->own_scan_running || !wpa_s->external_scan_running)) {
1229 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1230 struct wpa_scan_results *scan_res);
1231
1232 scan_res_handler = wpa_s->scan_res_handler;
1233 wpa_s->scan_res_handler = NULL;
1234 scan_res_handler(wpa_s, scan_res);
1235 ret = -2;
1236 goto scan_work_done;
1237 }
1238
1239 if (ap) {
1240 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1241 #ifdef CONFIG_AP
1242 if (wpa_s->ap_iface->scan_cb)
1243 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1244 #endif /* CONFIG_AP */
1245 goto scan_work_done;
1246 }
1247
1248 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1249 wpa_s->own_scan_running, wpa_s->external_scan_running);
1250 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1251 wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1252 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1253 wpa_s->manual_scan_id);
1254 wpa_s->manual_scan_use_id = 0;
1255 } else {
1256 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1257 }
1258 wpas_notify_scan_results(wpa_s);
1259
1260 wpas_notify_scan_done(wpa_s, 1);
1261
1262 if (!wpa_s->own_scan_running && wpa_s->external_scan_running) {
1263 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1264 wpa_scan_results_free(scan_res);
1265 return 0;
1266 }
1267
1268 if (sme_proc_obss_scan(wpa_s) > 0)
1269 goto scan_work_done;
1270
1271 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1272 goto scan_work_done;
1273
1274 if (autoscan_notify_scan(wpa_s, scan_res))
1275 goto scan_work_done;
1276
1277 if (wpa_s->disconnected) {
1278 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1279 goto scan_work_done;
1280 }
1281
1282 if (!wpas_driver_bss_selection(wpa_s) &&
1283 bgscan_notify_scan(wpa_s, scan_res) == 1)
1284 goto scan_work_done;
1285
1286 wpas_wps_update_ap_info(wpa_s, scan_res);
1287
1288 wpa_scan_results_free(scan_res);
1289
1290 if (wpa_s->scan_work) {
1291 struct wpa_radio_work *work = wpa_s->scan_work;
1292 wpa_s->scan_work = NULL;
1293 radio_work_done(work);
1294 }
1295
1296 return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1297
1298 scan_work_done:
1299 wpa_scan_results_free(scan_res);
1300 if (wpa_s->scan_work) {
1301 struct wpa_radio_work *work = wpa_s->scan_work;
1302 wpa_s->scan_work = NULL;
1303 radio_work_done(work);
1304 }
1305 return ret;
1306 }
1307
1308
1309 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1310 int new_scan, int own_request)
1311 {
1312 struct wpa_bss *selected;
1313 struct wpa_ssid *ssid = NULL;
1314
1315 selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1316
1317 if (selected) {
1318 int skip;
1319 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1320 if (skip) {
1321 if (new_scan)
1322 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1323 return 0;
1324 }
1325
1326 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1327 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1328 return -1;
1329 }
1330 if (new_scan)
1331 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1332 /*
1333 * Do not notify other virtual radios of scan results since we do not
1334 * want them to start other associations at the same time.
1335 */
1336 return 1;
1337 } else {
1338 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1339 ssid = wpa_supplicant_pick_new_network(wpa_s);
1340 if (ssid) {
1341 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1342 wpa_supplicant_associate(wpa_s, NULL, ssid);
1343 if (new_scan)
1344 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1345 } else if (own_request) {
1346 /*
1347 * No SSID found. If SCAN results are as a result of
1348 * own scan request and not due to a scan request on
1349 * another shared interface, try another scan.
1350 */
1351 int timeout_sec = wpa_s->scan_interval;
1352 int timeout_usec = 0;
1353 #ifdef CONFIG_P2P
1354 if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1355 return 0;
1356
1357 if (wpa_s->p2p_in_provisioning ||
1358 wpa_s->show_group_started) {
1359 /*
1360 * Use shorter wait during P2P Provisioning
1361 * state and during P2P join-a-group operation
1362 * to speed up group formation.
1363 */
1364 timeout_sec = 0;
1365 timeout_usec = 250000;
1366 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1367 timeout_usec);
1368 return 0;
1369 }
1370 #endif /* CONFIG_P2P */
1371 #ifdef CONFIG_INTERWORKING
1372 if (wpa_s->conf->auto_interworking &&
1373 wpa_s->conf->interworking &&
1374 wpa_s->conf->cred) {
1375 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1376 "start ANQP fetch since no matching "
1377 "networks found");
1378 wpa_s->network_select = 1;
1379 wpa_s->auto_network_select = 1;
1380 interworking_start_fetch_anqp(wpa_s);
1381 return 1;
1382 }
1383 #endif /* CONFIG_INTERWORKING */
1384 #ifdef CONFIG_WPS
1385 if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1386 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1387 timeout_sec = 0;
1388 timeout_usec = 500000;
1389 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1390 timeout_usec);
1391 return 0;
1392 }
1393 #endif /* CONFIG_WPS */
1394 if (wpa_supplicant_req_sched_scan(wpa_s))
1395 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1396 timeout_usec);
1397 }
1398 }
1399 return 0;
1400 }
1401
1402
1403 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1404 union wpa_event_data *data)
1405 {
1406 struct wpa_supplicant *ifs;
1407
1408 if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1409 /*
1410 * If no scan results could be fetched, then no need to
1411 * notify those interfaces that did not actually request
1412 * this scan. Similarly, if scan results started a new operation on this
1413 * interface, do not notify other interfaces to avoid concurrent
1414 * operations during a connection attempt.
1415 */
1416 return;
1417 }
1418
1419 /*
1420 * Check other interfaces to see if they share the same radio. If
1421 * so, they get updated with this same scan info.
1422 */
1423 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1424 radio_list) {
1425 if (ifs != wpa_s) {
1426 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1427 "sibling", ifs->ifname);
1428 _wpa_supplicant_event_scan_results(ifs, data, 0);
1429 }
1430 }
1431 }
1432
1433 #endif /* CONFIG_NO_SCAN_PROCESSING */
1434
1435
1436 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1437 {
1438 #ifdef CONFIG_NO_SCAN_PROCESSING
1439 return -1;
1440 #else /* CONFIG_NO_SCAN_PROCESSING */
1441 struct os_reltime now;
1442
1443 if (wpa_s->last_scan_res_used <= 0)
1444 return -1;
1445
1446 os_get_reltime(&now);
1447 if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1448 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1449 return -1;
1450 }
1451
1452 return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1453 #endif /* CONFIG_NO_SCAN_PROCESSING */
1454 }
1455
1456 #ifdef CONFIG_WNM
1457
1458 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1459 {
1460 struct wpa_supplicant *wpa_s = eloop_ctx;
1461
1462 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1463 return;
1464
1465 if (!wpa_s->no_keep_alive) {
1466 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1467 MAC2STR(wpa_s->bssid));
1468 /* TODO: could skip this if normal data traffic has been sent */
1469 /* TODO: Consider using some more appropriate data frame for
1470 * this */
1471 if (wpa_s->l2)
1472 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1473 (u8 *) "", 0);
1474 }
1475
1476 #ifdef CONFIG_SME
1477 if (wpa_s->sme.bss_max_idle_period) {
1478 unsigned int msec;
1479 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1480 if (msec > 100)
1481 msec -= 100;
1482 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1483 wnm_bss_keep_alive, wpa_s, NULL);
1484 }
1485 #endif /* CONFIG_SME */
1486 }
1487
1488
1489 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1490 const u8 *ies, size_t ies_len)
1491 {
1492 struct ieee802_11_elems elems;
1493
1494 if (ies == NULL)
1495 return;
1496
1497 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1498 return;
1499
1500 #ifdef CONFIG_SME
1501 if (elems.bss_max_idle_period) {
1502 unsigned int msec;
1503 wpa_s->sme.bss_max_idle_period =
1504 WPA_GET_LE16(elems.bss_max_idle_period);
1505 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1506 "TU)%s", wpa_s->sme.bss_max_idle_period,
1507 (elems.bss_max_idle_period[2] & 0x01) ?
1508 " (protected keep-live required)" : "");
1509 if (wpa_s->sme.bss_max_idle_period == 0)
1510 wpa_s->sme.bss_max_idle_period = 1;
1511 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1512 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1513 /* msec times 1000 */
1514 msec = wpa_s->sme.bss_max_idle_period * 1024;
1515 if (msec > 100)
1516 msec -= 100;
1517 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1518 wnm_bss_keep_alive, wpa_s,
1519 NULL);
1520 }
1521 }
1522 #endif /* CONFIG_SME */
1523 }
1524
1525 #endif /* CONFIG_WNM */
1526
1527
1528 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1529 {
1530 #ifdef CONFIG_WNM
1531 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1532 #endif /* CONFIG_WNM */
1533 }
1534
1535
1536 #ifdef CONFIG_INTERWORKING
1537
1538 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1539 size_t len)
1540 {
1541 int res;
1542
1543 wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1544 res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1545 if (res) {
1546 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1547 }
1548
1549 return res;
1550 }
1551
1552
1553 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1554 const u8 *ies, size_t ies_len)
1555 {
1556 struct ieee802_11_elems elems;
1557
1558 if (ies == NULL)
1559 return;
1560
1561 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1562 return;
1563
1564 if (elems.qos_map_set) {
1565 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1566 elems.qos_map_set_len);
1567 }
1568 }
1569
1570 #endif /* CONFIG_INTERWORKING */
1571
1572
1573 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1574 union wpa_event_data *data)
1575 {
1576 int l, len, found = 0, wpa_found, rsn_found;
1577 const u8 *p;
1578 #ifdef CONFIG_IEEE80211R
1579 u8 bssid[ETH_ALEN];
1580 #endif /* CONFIG_IEEE80211R */
1581
1582 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1583 if (data->assoc_info.req_ies)
1584 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1585 data->assoc_info.req_ies_len);
1586 if (data->assoc_info.resp_ies) {
1587 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1588 data->assoc_info.resp_ies_len);
1589 #ifdef CONFIG_TDLS
1590 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1591 data->assoc_info.resp_ies_len);
1592 #endif /* CONFIG_TDLS */
1593 #ifdef CONFIG_WNM
1594 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1595 data->assoc_info.resp_ies_len);
1596 #endif /* CONFIG_WNM */
1597 #ifdef CONFIG_INTERWORKING
1598 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1599 data->assoc_info.resp_ies_len);
1600 #endif /* CONFIG_INTERWORKING */
1601 }
1602 if (data->assoc_info.beacon_ies)
1603 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1604 data->assoc_info.beacon_ies,
1605 data->assoc_info.beacon_ies_len);
1606 if (data->assoc_info.freq)
1607 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1608 data->assoc_info.freq);
1609
1610 p = data->assoc_info.req_ies;
1611 l = data->assoc_info.req_ies_len;
1612
1613 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1614 while (p && l >= 2) {
1615 len = p[1] + 2;
1616 if (len > l) {
1617 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1618 p, l);
1619 break;
1620 }
1621 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1622 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1623 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1624 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1625 break;
1626 found = 1;
1627 wpa_find_assoc_pmkid(wpa_s);
1628 break;
1629 }
1630 l -= len;
1631 p += len;
1632 }
1633 if (!found && data->assoc_info.req_ies)
1634 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1635
1636 #ifdef CONFIG_IEEE80211R
1637 #ifdef CONFIG_SME
1638 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1639 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1640 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1641 data->assoc_info.resp_ies,
1642 data->assoc_info.resp_ies_len,
1643 bssid) < 0) {
1644 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1645 "Reassociation Response failed");
1646 wpa_supplicant_deauthenticate(
1647 wpa_s, WLAN_REASON_INVALID_IE);
1648 return -1;
1649 }
1650 }
1651
1652 p = data->assoc_info.resp_ies;
1653 l = data->assoc_info.resp_ies_len;
1654
1655 #ifdef CONFIG_WPS_STRICT
1656 if (p && wpa_s->current_ssid &&
1657 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1658 struct wpabuf *wps;
1659 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1660 if (wps == NULL) {
1661 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1662 "include WPS IE in (Re)Association Response");
1663 return -1;
1664 }
1665
1666 if (wps_validate_assoc_resp(wps) < 0) {
1667 wpabuf_free(wps);
1668 wpa_supplicant_deauthenticate(
1669 wpa_s, WLAN_REASON_INVALID_IE);
1670 return -1;
1671 }
1672 wpabuf_free(wps);
1673 }
1674 #endif /* CONFIG_WPS_STRICT */
1675
1676 /* Go through the IEs and make a copy of the MDIE, if present. */
1677 while (p && l >= 2) {
1678 len = p[1] + 2;
1679 if (len > l) {
1680 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1681 p, l);
1682 break;
1683 }
1684 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1685 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1686 wpa_s->sme.ft_used = 1;
1687 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1688 MOBILITY_DOMAIN_ID_LEN);
1689 break;
1690 }
1691 l -= len;
1692 p += len;
1693 }
1694 #endif /* CONFIG_SME */
1695
1696 /* Process FT when SME is in the driver */
1697 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1698 wpa_ft_is_completed(wpa_s->wpa)) {
1699 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1700 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1701 data->assoc_info.resp_ies,
1702 data->assoc_info.resp_ies_len,
1703 bssid) < 0) {
1704 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1705 "Reassociation Response failed");
1706 wpa_supplicant_deauthenticate(
1707 wpa_s, WLAN_REASON_INVALID_IE);
1708 return -1;
1709 }
1710 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1711 }
1712
1713 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1714 data->assoc_info.resp_ies_len);
1715 #endif /* CONFIG_IEEE80211R */
1716
1717 /* WPA/RSN IE from Beacon/ProbeResp */
1718 p = data->assoc_info.beacon_ies;
1719 l = data->assoc_info.beacon_ies_len;
1720
1721 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1722 */
1723 wpa_found = rsn_found = 0;
1724 while (p && l >= 2) {
1725 len = p[1] + 2;
1726 if (len > l) {
1727 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1728 p, l);
1729 break;
1730 }
1731 if (!wpa_found &&
1732 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1733 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1734 wpa_found = 1;
1735 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1736 }
1737
1738 if (!rsn_found &&
1739 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1740 rsn_found = 1;
1741 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1742 }
1743
1744 l -= len;
1745 p += len;
1746 }
1747
1748 if (!wpa_found && data->assoc_info.beacon_ies)
1749 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1750 if (!rsn_found && data->assoc_info.beacon_ies)
1751 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1752 if (wpa_found || rsn_found)
1753 wpa_s->ap_ies_from_associnfo = 1;
1754
1755 if (wpa_s->assoc_freq && data->assoc_info.freq &&
1756 wpa_s->assoc_freq != data->assoc_info.freq) {
1757 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1758 "%u to %u MHz",
1759 wpa_s->assoc_freq, data->assoc_info.freq);
1760 wpa_supplicant_update_scan_results(wpa_s);
1761 }
1762
1763 wpa_s->assoc_freq = data->assoc_info.freq;
1764
1765 return 0;
1766 }
1767
1768
1769 static struct wpa_bss * wpa_supplicant_get_new_bss(
1770 struct wpa_supplicant *wpa_s, const u8 *bssid)
1771 {
1772 struct wpa_bss *bss = NULL;
1773 struct wpa_ssid *ssid = wpa_s->current_ssid;
1774
1775 if (ssid->ssid_len > 0)
1776 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
1777 if (!bss)
1778 bss = wpa_bss_get_bssid(wpa_s, bssid);
1779
1780 return bss;
1781 }
1782
1783
1784 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1785 {
1786 const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1787
1788 if (!wpa_s->current_bss || !wpa_s->current_ssid)
1789 return -1;
1790
1791 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1792 return 0;
1793
1794 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1795 WPA_IE_VENDOR_TYPE);
1796 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1797
1798 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1799 bss_wpa ? 2 + bss_wpa[1] : 0) ||
1800 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1801 bss_rsn ? 2 + bss_rsn[1] : 0))
1802 return -1;
1803
1804 return 0;
1805 }
1806
1807
1808 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1809 union wpa_event_data *data)
1810 {
1811 u8 bssid[ETH_ALEN];
1812 int ft_completed;
1813
1814 #ifdef CONFIG_AP
1815 if (wpa_s->ap_iface) {
1816 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1817 data->assoc_info.addr,
1818 data->assoc_info.req_ies,
1819 data->assoc_info.req_ies_len,
1820 data->assoc_info.reassoc);
1821 return;
1822 }
1823 #endif /* CONFIG_AP */
1824
1825 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1826 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1827 return;
1828
1829 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1830 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1831 wpa_supplicant_deauthenticate(
1832 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1833 return;
1834 }
1835
1836 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1837 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1838 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1839 MACSTR, MAC2STR(bssid));
1840 random_add_randomness(bssid, ETH_ALEN);
1841 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1842 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1843 wpas_notify_bssid_changed(wpa_s);
1844
1845 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1846 wpa_clear_keys(wpa_s, bssid);
1847 }
1848 if (wpa_supplicant_select_config(wpa_s) < 0) {
1849 wpa_supplicant_deauthenticate(
1850 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1851 return;
1852 }
1853 if (wpa_s->current_ssid) {
1854 struct wpa_bss *bss = NULL;
1855
1856 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1857 if (!bss) {
1858 wpa_supplicant_update_scan_results(wpa_s);
1859
1860 /* Get the BSS from the new scan results */
1861 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1862 }
1863
1864 if (bss)
1865 wpa_s->current_bss = bss;
1866 }
1867
1868 if (wpa_s->conf->ap_scan == 1 &&
1869 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1870 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1871 wpa_msg(wpa_s, MSG_WARNING,
1872 "WPA/RSN IEs not updated");
1873 }
1874 }
1875
1876 #ifdef CONFIG_SME
1877 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1878 wpa_s->sme.prev_bssid_set = 1;
1879 #endif /* CONFIG_SME */
1880
1881 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1882 if (wpa_s->current_ssid) {
1883 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1884 * initialized before association, but for other modes,
1885 * initialize PC/SC here, if the current configuration needs
1886 * smartcard or SIM/USIM. */
1887 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1888 }
1889 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1890 if (wpa_s->l2)
1891 l2_packet_notify_auth_start(wpa_s->l2);
1892
1893 /*
1894 * Set portEnabled first to FALSE in order to get EAP state machine out
1895 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1896 * state machine may transit to AUTHENTICATING state based on obsolete
1897 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1898 * AUTHENTICATED without ever giving chance to EAP state machine to
1899 * reset the state.
1900 */
1901 if (!ft_completed) {
1902 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1903 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1904 }
1905 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1906 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1907 /* 802.1X::portControl = Auto */
1908 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1909 wpa_s->eapol_received = 0;
1910 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1911 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1912 (wpa_s->current_ssid &&
1913 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1914 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
1915 (wpa_s->drv_flags &
1916 WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1917 /*
1918 * Set the key after having received joined-IBSS event
1919 * from the driver.
1920 */
1921 wpa_supplicant_set_wpa_none_key(wpa_s,
1922 wpa_s->current_ssid);
1923 }
1924 wpa_supplicant_cancel_auth_timeout(wpa_s);
1925 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1926 } else if (!ft_completed) {
1927 /* Timeout for receiving the first EAPOL packet */
1928 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1929 }
1930 wpa_supplicant_cancel_scan(wpa_s);
1931
1932 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1933 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1934 /*
1935 * We are done; the driver will take care of RSN 4-way
1936 * handshake.
1937 */
1938 wpa_supplicant_cancel_auth_timeout(wpa_s);
1939 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1940 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1941 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1942 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1943 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1944 /*
1945 * The driver will take care of RSN 4-way handshake, so we need
1946 * to allow EAPOL supplicant to complete its work without
1947 * waiting for WPA supplicant.
1948 */
1949 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1950 } else if (ft_completed) {
1951 /*
1952 * FT protocol completed - make sure EAPOL state machine ends
1953 * up in authenticated.
1954 */
1955 wpa_supplicant_cancel_auth_timeout(wpa_s);
1956 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1957 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1958 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1959 }
1960
1961 wpa_s->last_eapol_matches_bssid = 0;
1962
1963 if (wpa_s->pending_eapol_rx) {
1964 struct os_reltime now, age;
1965 os_get_reltime(&now);
1966 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1967 if (age.sec == 0 && age.usec < 100000 &&
1968 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1969 0) {
1970 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1971 "frame that was received just before "
1972 "association notification");
1973 wpa_supplicant_rx_eapol(
1974 wpa_s, wpa_s->pending_eapol_rx_src,
1975 wpabuf_head(wpa_s->pending_eapol_rx),
1976 wpabuf_len(wpa_s->pending_eapol_rx));
1977 }
1978 wpabuf_free(wpa_s->pending_eapol_rx);
1979 wpa_s->pending_eapol_rx = NULL;
1980 }
1981
1982 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1983 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1984 wpa_s->current_ssid &&
1985 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1986 /* Set static WEP keys again */
1987 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1988 }
1989
1990 #ifdef CONFIG_IBSS_RSN
1991 if (wpa_s->current_ssid &&
1992 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1993 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1994 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1995 wpa_s->ibss_rsn == NULL) {
1996 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1997 if (!wpa_s->ibss_rsn) {
1998 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1999 wpa_supplicant_deauthenticate(
2000 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2001 return;
2002 }
2003
2004 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2005 }
2006 #endif /* CONFIG_IBSS_RSN */
2007
2008 wpas_wps_notify_assoc(wpa_s, bssid);
2009 }
2010
2011
2012 static int disconnect_reason_recoverable(u16 reason_code)
2013 {
2014 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2015 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2016 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2017 }
2018
2019
2020 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2021 u16 reason_code,
2022 int locally_generated)
2023 {
2024 const u8 *bssid;
2025
2026 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2027 /*
2028 * At least Host AP driver and a Prism3 card seemed to be
2029 * generating streams of disconnected events when configuring
2030 * IBSS for WPA-None. Ignore them for now.
2031 */
2032 return;
2033 }
2034
2035 bssid = wpa_s->bssid;
2036 if (is_zero_ether_addr(bssid))
2037 bssid = wpa_s->pending_bssid;
2038
2039 if (!is_zero_ether_addr(bssid) ||
2040 wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2041 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2042 " reason=%d%s",
2043 MAC2STR(bssid), reason_code,
2044 locally_generated ? " locally_generated=1" : "");
2045 }
2046 }
2047
2048
2049 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2050 int locally_generated)
2051 {
2052 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2053 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2054 return 0; /* Not in 4-way handshake with PSK */
2055
2056 /*
2057 * It looks like connection was lost while trying to go through PSK
2058 * 4-way handshake. Filter out known disconnection cases that are caused
2059 * by something else than PSK mismatch to avoid confusing reports.
2060 */
2061
2062 if (locally_generated) {
2063 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2064 return 0;
2065 }
2066
2067 return 1;
2068 }
2069
2070
2071 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2072 u16 reason_code,
2073 int locally_generated)
2074 {
2075 const u8 *bssid;
2076 int authenticating;
2077 u8 prev_pending_bssid[ETH_ALEN];
2078 struct wpa_bss *fast_reconnect = NULL;
2079 #ifndef CONFIG_NO_SCAN_PROCESSING
2080 struct wpa_ssid *fast_reconnect_ssid = NULL;
2081 #endif /* CONFIG_NO_SCAN_PROCESSING */
2082 struct wpa_ssid *last_ssid;
2083
2084 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2085 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2086
2087 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2088 /*
2089 * At least Host AP driver and a Prism3 card seemed to be
2090 * generating streams of disconnected events when configuring
2091 * IBSS for WPA-None. Ignore them for now.
2092 */
2093 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2094 "IBSS/WPA-None mode");
2095 return;
2096 }
2097
2098 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2099 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2100 "pre-shared key may be incorrect");
2101 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2102 return; /* P2P group removed */
2103 wpas_auth_failed(wpa_s);
2104 }
2105 if (!wpa_s->disconnected &&
2106 (!wpa_s->auto_reconnect_disabled ||
2107 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)) {
2108 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2109 "reconnect (wps=%d wpa_state=%d)",
2110 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2111 wpa_s->wpa_state);
2112 if (wpa_s->wpa_state == WPA_COMPLETED &&
2113 wpa_s->current_ssid &&
2114 wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2115 !locally_generated &&
2116 disconnect_reason_recoverable(reason_code)) {
2117 /*
2118 * It looks like the AP has dropped association with
2119 * us, but could allow us to get back in. Try to
2120 * reconnect to the same BSS without full scan to save
2121 * time for some common cases.
2122 */
2123 fast_reconnect = wpa_s->current_bss;
2124 #ifndef CONFIG_NO_SCAN_PROCESSING
2125 fast_reconnect_ssid = wpa_s->current_ssid;
2126 #endif /* CONFIG_NO_SCAN_PROCESSING */
2127 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2128 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2129 else
2130 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2131 "immediate scan");
2132 } else {
2133 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2134 "try to re-connect");
2135 wpa_s->reassociate = 0;
2136 wpa_s->disconnected = 1;
2137 wpa_supplicant_cancel_sched_scan(wpa_s);
2138 }
2139 bssid = wpa_s->bssid;
2140 if (is_zero_ether_addr(bssid))
2141 bssid = wpa_s->pending_bssid;
2142 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2143 wpas_connection_failed(wpa_s, bssid);
2144 wpa_sm_notify_disassoc(wpa_s->wpa);
2145 if (locally_generated)
2146 wpa_s->disconnect_reason = -reason_code;
2147 else
2148 wpa_s->disconnect_reason = reason_code;
2149 wpas_notify_disconnect_reason(wpa_s);
2150 if (wpa_supplicant_dynamic_keys(wpa_s)) {
2151 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2152 wpa_clear_keys(wpa_s, wpa_s->bssid);
2153 }
2154 last_ssid = wpa_s->current_ssid;
2155 wpa_supplicant_mark_disassoc(wpa_s);
2156
2157 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2158 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2159 wpa_s->current_ssid = last_ssid;
2160 }
2161
2162 if (fast_reconnect) {
2163 #ifndef CONFIG_NO_SCAN_PROCESSING
2164 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2165 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2166 fast_reconnect_ssid) < 0) {
2167 /* Recover through full scan */
2168 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2169 }
2170 #endif /* CONFIG_NO_SCAN_PROCESSING */
2171 }
2172 }
2173
2174
2175 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2176 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2177 {
2178 struct wpa_supplicant *wpa_s = eloop_ctx;
2179
2180 if (!wpa_s->pending_mic_error_report)
2181 return;
2182
2183 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2184 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2185 wpa_s->pending_mic_error_report = 0;
2186 }
2187 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2188
2189
2190 static void
2191 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2192 union wpa_event_data *data)
2193 {
2194 int pairwise;
2195 struct os_reltime t;
2196
2197 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2198 pairwise = (data && data->michael_mic_failure.unicast);
2199 os_get_reltime(&t);
2200 if ((wpa_s->last_michael_mic_error.sec &&
2201 !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2202 wpa_s->pending_mic_error_report) {
2203 if (wpa_s->pending_mic_error_report) {
2204 /*
2205 * Send the pending MIC error report immediately since
2206 * we are going to start countermeasures and AP better
2207 * do the same.
2208 */
2209 wpa_sm_key_request(wpa_s->wpa, 1,
2210 wpa_s->pending_mic_error_pairwise);
2211 }
2212
2213 /* Send the new MIC error report immediately since we are going
2214 * to start countermeasures and AP better do the same.
2215 */
2216 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2217
2218 /* initialize countermeasures */
2219 wpa_s->countermeasures = 1;
2220
2221 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2222
2223 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2224
2225 /*
2226 * Need to wait for completion of request frame. We do not get
2227 * any callback for the message completion, so just wait a
2228 * short while and hope for the best. */
2229 os_sleep(0, 10000);
2230
2231 wpa_drv_set_countermeasures(wpa_s, 1);
2232 wpa_supplicant_deauthenticate(wpa_s,
2233 WLAN_REASON_MICHAEL_MIC_FAILURE);
2234 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2235 wpa_s, NULL);
2236 eloop_register_timeout(60, 0,
2237 wpa_supplicant_stop_countermeasures,
2238 wpa_s, NULL);
2239 /* TODO: mark the AP rejected for 60 second. STA is
2240 * allowed to associate with another AP.. */
2241 } else {
2242 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2243 if (wpa_s->mic_errors_seen) {
2244 /*
2245 * Reduce the effectiveness of Michael MIC error
2246 * reports as a means for attacking against TKIP if
2247 * more than one MIC failure is noticed with the same
2248 * PTK. We delay the transmission of the reports by a
2249 * random time between 0 and 60 seconds in order to
2250 * force the attacker wait 60 seconds before getting
2251 * the information on whether a frame resulted in a MIC
2252 * failure.
2253 */
2254 u8 rval[4];
2255 int sec;
2256
2257 if (os_get_random(rval, sizeof(rval)) < 0)
2258 sec = os_random() % 60;
2259 else
2260 sec = WPA_GET_BE32(rval) % 60;
2261 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2262 "report %d seconds", sec);
2263 wpa_s->pending_mic_error_report = 1;
2264 wpa_s->pending_mic_error_pairwise = pairwise;
2265 eloop_cancel_timeout(
2266 wpa_supplicant_delayed_mic_error_report,
2267 wpa_s, NULL);
2268 eloop_register_timeout(
2269 sec, os_random() % 1000000,
2270 wpa_supplicant_delayed_mic_error_report,
2271 wpa_s, NULL);
2272 } else {
2273 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2274 }
2275 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2276 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2277 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2278 }
2279 wpa_s->last_michael_mic_error = t;
2280 wpa_s->mic_errors_seen++;
2281 }
2282
2283
2284 #ifdef CONFIG_TERMINATE_ONLASTIF
2285 static int any_interfaces(struct wpa_supplicant *head)
2286 {
2287 struct wpa_supplicant *wpa_s;
2288
2289 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2290 if (!wpa_s->interface_removed)
2291 return 1;
2292 return 0;
2293 }
2294 #endif /* CONFIG_TERMINATE_ONLASTIF */
2295
2296
2297 static void
2298 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2299 union wpa_event_data *data)
2300 {
2301 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2302 return;
2303
2304 switch (data->interface_status.ievent) {
2305 case EVENT_INTERFACE_ADDED:
2306 if (!wpa_s->interface_removed)
2307 break;
2308 wpa_s->interface_removed = 0;
2309 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2310 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2311 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2312 "driver after interface was added");
2313 }
2314 break;
2315 case EVENT_INTERFACE_REMOVED:
2316 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2317 wpa_s->interface_removed = 1;
2318 wpa_supplicant_mark_disassoc(wpa_s);
2319 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2320 l2_packet_deinit(wpa_s->l2);
2321 wpa_s->l2 = NULL;
2322 #ifdef CONFIG_IBSS_RSN
2323 ibss_rsn_deinit(wpa_s->ibss_rsn);
2324 wpa_s->ibss_rsn = NULL;
2325 #endif /* CONFIG_IBSS_RSN */
2326 #ifdef CONFIG_TERMINATE_ONLASTIF
2327 /* check if last interface */
2328 if (!any_interfaces(wpa_s->global->ifaces))
2329 eloop_terminate();
2330 #endif /* CONFIG_TERMINATE_ONLASTIF */
2331 break;
2332 }
2333 }
2334
2335
2336 #ifdef CONFIG_PEERKEY
2337 static void
2338 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2339 union wpa_event_data *data)
2340 {
2341 if (data == NULL)
2342 return;
2343 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2344 }
2345 #endif /* CONFIG_PEERKEY */
2346
2347
2348 #ifdef CONFIG_TDLS
2349 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2350 union wpa_event_data *data)
2351 {
2352 if (data == NULL)
2353 return;
2354 switch (data->tdls.oper) {
2355 case TDLS_REQUEST_SETUP:
2356 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2357 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2358 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2359 else
2360 wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2361 break;
2362 case TDLS_REQUEST_TEARDOWN:
2363 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2364 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2365 data->tdls.reason_code);
2366 else
2367 wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2368 data->tdls.peer);
2369 break;
2370 }
2371 }
2372 #endif /* CONFIG_TDLS */
2373
2374
2375 #ifdef CONFIG_WNM
2376 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2377 union wpa_event_data *data)
2378 {
2379 if (data == NULL)
2380 return;
2381 switch (data->wnm.oper) {
2382 case WNM_OPER_SLEEP:
2383 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2384 "(action=%d, intval=%d)",
2385 data->wnm.sleep_action, data->wnm.sleep_intval);
2386 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2387 data->wnm.sleep_intval, NULL);
2388 break;
2389 }
2390 }
2391 #endif /* CONFIG_WNM */
2392
2393
2394 #ifdef CONFIG_IEEE80211R
2395 static void
2396 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2397 union wpa_event_data *data)
2398 {
2399 if (data == NULL)
2400 return;
2401
2402 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2403 data->ft_ies.ies_len,
2404 data->ft_ies.ft_action,
2405 data->ft_ies.target_ap,
2406 data->ft_ies.ric_ies,
2407 data->ft_ies.ric_ies_len) < 0) {
2408 /* TODO: prevent MLME/driver from trying to associate? */
2409 }
2410 }
2411 #endif /* CONFIG_IEEE80211R */
2412
2413
2414 #ifdef CONFIG_IBSS_RSN
2415 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2416 union wpa_event_data *data)
2417 {
2418 struct wpa_ssid *ssid;
2419 if (wpa_s->wpa_state < WPA_ASSOCIATED)
2420 return;
2421 if (data == NULL)
2422 return;
2423 ssid = wpa_s->current_ssid;
2424 if (ssid == NULL)
2425 return;
2426 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2427 return;
2428
2429 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2430 }
2431
2432
2433 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2434 union wpa_event_data *data)
2435 {
2436 struct wpa_ssid *ssid = wpa_s->current_ssid;
2437
2438 if (ssid == NULL)
2439 return;
2440
2441 /* check if the ssid is correctly configured as IBSS/RSN */
2442 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2443 return;
2444
2445 ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2446 data->rx_mgmt.frame_len);
2447 }
2448 #endif /* CONFIG_IBSS_RSN */
2449
2450
2451 #ifdef CONFIG_IEEE80211R
2452 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2453 size_t len)
2454 {
2455 const u8 *sta_addr, *target_ap_addr;
2456 u16 status;
2457
2458 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2459 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2460 return; /* only SME case supported for now */
2461 if (len < 1 + 2 * ETH_ALEN + 2)
2462 return;
2463 if (data[0] != 2)
2464 return; /* Only FT Action Response is supported for now */
2465 sta_addr = data + 1;
2466 target_ap_addr = data + 1 + ETH_ALEN;
2467 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2468 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2469 MACSTR " TargetAP " MACSTR " status %u",
2470 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2471
2472 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2473 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2474 " in FT Action Response", MAC2STR(sta_addr));
2475 return;
2476 }
2477
2478 if (status) {
2479 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2480 "failure (status code %d)", status);
2481 /* TODO: report error to FT code(?) */
2482 return;
2483 }
2484
2485 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2486 len - (1 + 2 * ETH_ALEN + 2), 1,
2487 target_ap_addr, NULL, 0) < 0)
2488 return;
2489
2490 #ifdef CONFIG_SME
2491 {
2492 struct wpa_bss *bss;
2493 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2494 if (bss)
2495 wpa_s->sme.freq = bss->freq;
2496 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2497 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2498 WLAN_AUTH_FT);
2499 }
2500 #endif /* CONFIG_SME */
2501 }
2502 #endif /* CONFIG_IEEE80211R */
2503
2504
2505 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2506 struct unprot_deauth *e)
2507 {
2508 #ifdef CONFIG_IEEE80211W
2509 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2510 "dropped: " MACSTR " -> " MACSTR
2511 " (reason code %u)",
2512 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2513 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2514 #endif /* CONFIG_IEEE80211W */
2515 }
2516
2517
2518 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2519 struct unprot_disassoc *e)
2520 {
2521 #ifdef CONFIG_IEEE80211W
2522 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2523 "dropped: " MACSTR " -> " MACSTR
2524 " (reason code %u)",
2525 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2526 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2527 #endif /* CONFIG_IEEE80211W */
2528 }
2529
2530
2531 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2532 u16 reason_code, int locally_generated,
2533 const u8 *ie, size_t ie_len, int deauth)
2534 {
2535 #ifdef CONFIG_AP
2536 if (wpa_s->ap_iface && addr) {
2537 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2538 return;
2539 }
2540
2541 if (wpa_s->ap_iface) {
2542 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2543 return;
2544 }
2545 #endif /* CONFIG_AP */
2546
2547 wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2548
2549 if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2550 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2551 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2552 eapol_sm_failed(wpa_s->eapol))) &&
2553 !wpa_s->eap_expected_failure))
2554 wpas_auth_failed(wpa_s);
2555
2556 #ifdef CONFIG_P2P
2557 if (deauth && reason_code > 0) {
2558 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2559 locally_generated) > 0) {
2560 /*
2561 * The interface was removed, so cannot continue
2562 * processing any additional operations after this.
2563 */
2564 return;
2565 }
2566 }
2567 #endif /* CONFIG_P2P */
2568
2569 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2570 locally_generated);
2571 }
2572
2573
2574 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2575 struct disassoc_info *info)
2576 {
2577 u16 reason_code = 0;
2578 int locally_generated = 0;
2579 const u8 *addr = NULL;
2580 const u8 *ie = NULL;
2581 size_t ie_len = 0;
2582
2583 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2584
2585 if (info) {
2586 addr = info->addr;
2587 ie = info->ie;
2588 ie_len = info->ie_len;
2589 reason_code = info->reason_code;
2590 locally_generated = info->locally_generated;
2591 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2592 locally_generated ? " (locally generated)" : "");
2593 if (addr)
2594 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2595 MAC2STR(addr));
2596 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2597 ie, ie_len);
2598 }
2599
2600 #ifdef CONFIG_AP
2601 if (wpa_s->ap_iface && info && info->addr) {
2602 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2603 return;
2604 }
2605
2606 if (wpa_s->ap_iface) {
2607 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2608 return;
2609 }
2610 #endif /* CONFIG_AP */
2611
2612 #ifdef CONFIG_P2P
2613 if (info) {
2614 wpas_p2p_disassoc_notif(
2615 wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2616 locally_generated);
2617 }
2618 #endif /* CONFIG_P2P */
2619
2620 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2621 sme_event_disassoc(wpa_s, info);
2622
2623 wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2624 ie, ie_len, 0);
2625 }
2626
2627
2628 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2629 struct deauth_info *info)
2630 {
2631 u16 reason_code = 0;
2632 int locally_generated = 0;
2633 const u8 *addr = NULL;
2634 const u8 *ie = NULL;
2635 size_t ie_len = 0;
2636
2637 wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2638
2639 if (info) {
2640 addr = info->addr;
2641 ie = info->ie;
2642 ie_len = info->ie_len;
2643 reason_code = info->reason_code;
2644 locally_generated = info->locally_generated;
2645 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2646 reason_code,
2647 locally_generated ? " (locally generated)" : "");
2648 if (addr) {
2649 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2650 MAC2STR(addr));
2651 }
2652 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2653 ie, ie_len);
2654 }
2655
2656 wpa_reset_ft_completed(wpa_s->wpa);
2657
2658 wpas_event_disconnect(wpa_s, addr, reason_code,
2659 locally_generated, ie, ie_len, 1);
2660 }
2661
2662
2663 static void wpa_supplicant_update_channel_list(struct wpa_supplicant *wpa_s)
2664 {
2665 struct wpa_supplicant *ifs;
2666
2667 if (wpa_s->drv_priv == NULL)
2668 return; /* Ignore event during drv initialization */
2669
2670 free_hw_features(wpa_s);
2671 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2672 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2673
2674 #ifdef CONFIG_P2P
2675 wpas_p2p_update_channel_list(wpa_s);
2676 #endif /* CONFIG_P2P */
2677
2678 /*
2679 * Check other interfaces to see if they share the same radio. If
2680 * so, they get updated with this same hw mode info.
2681 */
2682 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2683 radio_list) {
2684 if (ifs != wpa_s) {
2685 wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2686 ifs->ifname);
2687 free_hw_features(ifs);
2688 ifs->hw.modes = wpa_drv_get_hw_feature_data(
2689 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2690 }
2691 }
2692 }
2693
2694
2695 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2696 const struct ieee80211_mgmt *mgmt,
2697 size_t len, int freq)
2698 {
2699 const u8 *payload;
2700 size_t plen;
2701 u8 category;
2702
2703 if (len < IEEE80211_HDRLEN + 2)
2704 return;
2705
2706 payload = &mgmt->u.action.category;
2707 category = *payload++;
2708 plen = (((const u8 *) mgmt) + len) - payload;
2709
2710 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2711 " Category=%u DataLen=%d freq=%d MHz",
2712 MAC2STR(mgmt->sa), category, (int) plen, freq);
2713
2714 #ifdef CONFIG_IEEE80211R
2715 if (category == WLAN_ACTION_FT) {
2716 ft_rx_action(wpa_s, payload, plen);
2717 return;
2718 }
2719 #endif /* CONFIG_IEEE80211R */
2720
2721 #ifdef CONFIG_IEEE80211W
2722 #ifdef CONFIG_SME
2723 if (category == WLAN_ACTION_SA_QUERY) {
2724 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2725 return;
2726 }
2727 #endif /* CONFIG_SME */
2728 #endif /* CONFIG_IEEE80211W */
2729
2730 #ifdef CONFIG_WNM
2731 if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2732 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2733 return;
2734 }
2735 #endif /* CONFIG_WNM */
2736
2737 #ifdef CONFIG_GAS
2738 if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2739 mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2740 gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2741 mgmt->u.action.category,
2742 payload, plen, freq) == 0)
2743 return;
2744 #endif /* CONFIG_GAS */
2745
2746 #ifdef CONFIG_TDLS
2747 if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2748 payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2749 wpa_dbg(wpa_s, MSG_DEBUG,
2750 "TDLS: Received Discovery Response from " MACSTR,
2751 MAC2STR(mgmt->sa));
2752 return;
2753 }
2754 #endif /* CONFIG_TDLS */
2755
2756 #ifdef CONFIG_INTERWORKING
2757 if (category == WLAN_ACTION_QOS && plen >= 1 &&
2758 payload[0] == QOS_QOS_MAP_CONFIG) {
2759 const u8 *pos = payload + 1;
2760 size_t qlen = plen - 1;
2761 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2762 MACSTR, MAC2STR(mgmt->sa));
2763 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2764 qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2765 pos[1] <= qlen - 2 && pos[1] >= 16)
2766 wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2767 return;
2768 }
2769 #endif /* CONFIG_INTERWORKING */
2770
2771 #ifdef CONFIG_P2P
2772 wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2773 category, payload, plen, freq);
2774 #endif /* CONFIG_P2P */
2775 }
2776
2777
2778 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2779 union wpa_event_data *event)
2780 {
2781 #ifdef CONFIG_P2P
2782 struct wpa_supplicant *ifs;
2783 #endif /* CONFIG_P2P */
2784 struct wpa_freq_range_list *list;
2785 char *str = NULL;
2786
2787 list = &event->freq_range;
2788
2789 if (list->num)
2790 str = freq_range_list_str(list);
2791 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2792 str ? str : "");
2793
2794 #ifdef CONFIG_P2P
2795 if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2796 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2797 __func__);
2798 } else {
2799 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2800 wpas_p2p_update_channel_list(wpa_s);
2801 }
2802
2803 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2804 int freq;
2805 if (!ifs->current_ssid ||
2806 !ifs->current_ssid->p2p_group ||
2807 (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
2808 ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
2809 continue;
2810
2811 freq = ifs->current_ssid->frequency;
2812 if (!freq_range_list_includes(list, freq)) {
2813 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
2814 freq);
2815 continue;
2816 }
2817
2818 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
2819 freq);
2820 /* TODO: Consider using CSA or removing the group within
2821 * wpa_supplicant */
2822 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
2823 }
2824 #endif /* CONFIG_P2P */
2825
2826 os_free(str);
2827 }
2828
2829
2830 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2831 union wpa_event_data *data)
2832 {
2833 struct wpa_supplicant *wpa_s = ctx;
2834
2835 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2836 event != EVENT_INTERFACE_ENABLED &&
2837 event != EVENT_INTERFACE_STATUS &&
2838 event != EVENT_SCHED_SCAN_STOPPED) {
2839 wpa_dbg(wpa_s, MSG_DEBUG,
2840 "Ignore event %s (%d) while interface is disabled",
2841 event_to_string(event), event);
2842 return;
2843 }
2844
2845 #ifndef CONFIG_NO_STDOUT_DEBUG
2846 {
2847 int level = MSG_DEBUG;
2848
2849 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2850 const struct ieee80211_hdr *hdr;
2851 u16 fc;
2852 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2853 fc = le_to_host16(hdr->frame_control);
2854 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2855 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2856 level = MSG_EXCESSIVE;
2857 }
2858
2859 wpa_dbg(wpa_s, level, "Event %s (%d) received",
2860 event_to_string(event), event);
2861 }
2862 #endif /* CONFIG_NO_STDOUT_DEBUG */
2863
2864 switch (event) {
2865 case EVENT_AUTH:
2866 sme_event_auth(wpa_s, data);
2867 break;
2868 case EVENT_ASSOC:
2869 wpa_supplicant_event_assoc(wpa_s, data);
2870 break;
2871 case EVENT_DISASSOC:
2872 wpas_event_disassoc(wpa_s,
2873 data ? &data->disassoc_info : NULL);
2874 break;
2875 case EVENT_DEAUTH:
2876 wpas_event_deauth(wpa_s,
2877 data ? &data->deauth_info : NULL);
2878 break;
2879 case EVENT_MICHAEL_MIC_FAILURE:
2880 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2881 break;
2882 #ifndef CONFIG_NO_SCAN_PROCESSING
2883 case EVENT_SCAN_STARTED:
2884 os_get_reltime(&wpa_s->scan_start_time);
2885 if (wpa_s->own_scan_requested) {
2886 struct os_reltime diff;
2887
2888 os_reltime_sub(&wpa_s->scan_start_time,
2889 &wpa_s->scan_trigger_time, &diff);
2890 wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
2891 diff.sec, diff.usec);
2892 wpa_s->own_scan_requested = 0;
2893 wpa_s->own_scan_running = 1;
2894 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
2895 wpa_s->manual_scan_use_id) {
2896 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED "id=%u",
2897 wpa_s->manual_scan_id);
2898 } else {
2899 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
2900 }
2901 } else {
2902 wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
2903 wpa_s->external_scan_running = 1;
2904 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
2905 }
2906 break;
2907 case EVENT_SCAN_RESULTS:
2908 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
2909 struct os_reltime now, diff;
2910 os_get_reltime(&now);
2911 os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
2912 wpa_s->scan_start_time.sec = 0;
2913 wpa_s->scan_start_time.usec = 0;
2914 wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
2915 diff.sec, diff.usec);
2916 }
2917 wpa_supplicant_event_scan_results(wpa_s, data);
2918 wpa_s->own_scan_running = 0;
2919 wpa_s->external_scan_running = 0;
2920 radio_work_check_next(wpa_s);
2921 break;
2922 #endif /* CONFIG_NO_SCAN_PROCESSING */
2923 case EVENT_ASSOCINFO:
2924 wpa_supplicant_event_associnfo(wpa_s, data);
2925 break;
2926 case EVENT_INTERFACE_STATUS:
2927 wpa_supplicant_event_interface_status(wpa_s, data);
2928 break;
2929 case EVENT_PMKID_CANDIDATE:
2930 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2931 break;
2932 #ifdef CONFIG_PEERKEY
2933 case EVENT_STKSTART:
2934 wpa_supplicant_event_stkstart(wpa_s, data);
2935 break;
2936 #endif /* CONFIG_PEERKEY */
2937 #ifdef CONFIG_TDLS
2938 case EVENT_TDLS:
2939 wpa_supplicant_event_tdls(wpa_s, data);
2940 break;
2941 #endif /* CONFIG_TDLS */
2942 #ifdef CONFIG_WNM
2943 case EVENT_WNM:
2944 wpa_supplicant_event_wnm(wpa_s, data);
2945 break;
2946 #endif /* CONFIG_WNM */
2947 #ifdef CONFIG_IEEE80211R
2948 case EVENT_FT_RESPONSE:
2949 wpa_supplicant_event_ft_response(wpa_s, data);
2950 break;
2951 #endif /* CONFIG_IEEE80211R */
2952 #ifdef CONFIG_IBSS_RSN
2953 case EVENT_IBSS_RSN_START:
2954 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2955 break;
2956 #endif /* CONFIG_IBSS_RSN */
2957 case EVENT_ASSOC_REJECT:
2958 if (data->assoc_reject.bssid)
2959 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2960 "bssid=" MACSTR " status_code=%u",
2961 MAC2STR(data->assoc_reject.bssid),
2962 data->assoc_reject.status_code);
2963 else
2964 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2965 "status_code=%u",
2966 data->assoc_reject.status_code);
2967 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2968 sme_event_assoc_reject(wpa_s, data);
2969 else {
2970 const u8 *bssid = data->assoc_reject.bssid;
2971 if (bssid == NULL || is_zero_ether_addr(bssid))
2972 bssid = wpa_s->pending_bssid;
2973 wpas_connection_failed(wpa_s, bssid);
2974 wpa_supplicant_mark_disassoc(wpa_s);
2975 }
2976 break;
2977 case EVENT_AUTH_TIMED_OUT:
2978 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2979 sme_event_auth_timed_out(wpa_s, data);
2980 break;
2981 case EVENT_ASSOC_TIMED_OUT:
2982 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2983 sme_event_assoc_timed_out(wpa_s, data);
2984 break;
2985 case EVENT_TX_STATUS:
2986 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2987 " type=%d stype=%d",
2988 MAC2STR(data->tx_status.dst),
2989 data->tx_status.type, data->tx_status.stype);
2990 #ifdef CONFIG_AP
2991 if (wpa_s->ap_iface == NULL) {
2992 #ifdef CONFIG_OFFCHANNEL
2993 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2994 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2995 offchannel_send_action_tx_status(
2996 wpa_s, data->tx_status.dst,
2997 data->tx_status.data,
2998 data->tx_status.data_len,
2999 data->tx_status.ack ?
3000 OFFCHANNEL_SEND_ACTION_SUCCESS :
3001 OFFCHANNEL_SEND_ACTION_NO_ACK);
3002 #endif /* CONFIG_OFFCHANNEL */
3003 break;
3004 }
3005 #endif /* CONFIG_AP */
3006 #ifdef CONFIG_OFFCHANNEL
3007 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3008 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3009 /*
3010 * Catch TX status events for Action frames we sent via group
3011 * interface in GO mode.
3012 */
3013 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3014 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3015 os_memcmp(wpa_s->parent->pending_action_dst,
3016 data->tx_status.dst, ETH_ALEN) == 0) {
3017 offchannel_send_action_tx_status(
3018 wpa_s->parent, data->tx_status.dst,
3019 data->tx_status.data,
3020 data->tx_status.data_len,
3021 data->tx_status.ack ?
3022 OFFCHANNEL_SEND_ACTION_SUCCESS :
3023 OFFCHANNEL_SEND_ACTION_NO_ACK);
3024 break;
3025 }
3026 #endif /* CONFIG_OFFCHANNEL */
3027 #ifdef CONFIG_AP
3028 switch (data->tx_status.type) {
3029 case WLAN_FC_TYPE_MGMT:
3030 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3031 data->tx_status.data_len,
3032 data->tx_status.stype,
3033 data->tx_status.ack);
3034 break;
3035 case WLAN_FC_TYPE_DATA:
3036 ap_tx_status(wpa_s, data->tx_status.dst,
3037 data->tx_status.data,
3038 data->tx_status.data_len,
3039 data->tx_status.ack);
3040 break;
3041 }
3042 #endif /* CONFIG_AP */
3043 break;
3044 #ifdef CONFIG_AP
3045 case EVENT_EAPOL_TX_STATUS:
3046 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3047 data->eapol_tx_status.data,
3048 data->eapol_tx_status.data_len,
3049 data->eapol_tx_status.ack);
3050 break;
3051 case EVENT_DRIVER_CLIENT_POLL_OK:
3052 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3053 break;
3054 case EVENT_RX_FROM_UNKNOWN:
3055 if (wpa_s->ap_iface == NULL)
3056 break;
3057 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3058 data->rx_from_unknown.wds);
3059 break;
3060 case EVENT_CH_SWITCH:
3061 if (!data)
3062 break;
3063 if (!wpa_s->ap_iface) {
3064 wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3065 "event in non-AP mode");
3066 break;
3067 }
3068
3069 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3070 data->ch_switch.ht_enabled,
3071 data->ch_switch.ch_offset,
3072 data->ch_switch.ch_width,
3073 data->ch_switch.cf1,
3074 data->ch_switch.cf2);
3075 break;
3076 #endif /* CONFIG_AP */
3077 case EVENT_RX_MGMT: {
3078 u16 fc, stype;
3079 const struct ieee80211_mgmt *mgmt;
3080
3081 mgmt = (const struct ieee80211_mgmt *)
3082 data->rx_mgmt.frame;
3083 fc = le_to_host16(mgmt->frame_control);
3084 stype = WLAN_FC_GET_STYPE(fc);
3085
3086 #ifdef CONFIG_AP
3087 if (wpa_s->ap_iface == NULL) {
3088 #endif /* CONFIG_AP */
3089 #ifdef CONFIG_P2P
3090 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3091 data->rx_mgmt.frame_len > 24) {
3092 const u8 *src = mgmt->sa;
3093 const u8 *ie = mgmt->u.probe_req.variable;
3094 size_t ie_len = data->rx_mgmt.frame_len -
3095 (mgmt->u.probe_req.variable -
3096 data->rx_mgmt.frame);
3097 wpas_p2p_probe_req_rx(
3098 wpa_s, src, mgmt->da,
3099 mgmt->bssid, ie, ie_len,
3100 data->rx_mgmt.ssi_signal);
3101 break;
3102 }
3103 #endif /* CONFIG_P2P */
3104 #ifdef CONFIG_IBSS_RSN
3105 if (stype == WLAN_FC_STYPE_AUTH &&
3106 data->rx_mgmt.frame_len >= 30) {
3107 wpa_supplicant_event_ibss_auth(wpa_s, data);
3108 break;
3109 }
3110 #endif /* CONFIG_IBSS_RSN */
3111
3112 if (stype == WLAN_FC_STYPE_ACTION) {
3113 wpas_event_rx_mgmt_action(
3114 wpa_s, mgmt, data->rx_mgmt.frame_len,
3115 data->rx_mgmt.freq);
3116 break;
3117 }
3118
3119 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3120 "management frame in non-AP mode");
3121 break;
3122 #ifdef CONFIG_AP
3123 }
3124
3125 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3126 data->rx_mgmt.frame_len > 24) {
3127 const u8 *ie = mgmt->u.probe_req.variable;
3128 size_t ie_len = data->rx_mgmt.frame_len -
3129 (mgmt->u.probe_req.variable -
3130 data->rx_mgmt.frame);
3131
3132 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3133 mgmt->bssid, ie, ie_len,
3134 data->rx_mgmt.ssi_signal);
3135 }
3136
3137 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3138 #endif /* CONFIG_AP */
3139 break;
3140 }
3141 case EVENT_RX_PROBE_REQ:
3142 if (data->rx_probe_req.sa == NULL ||
3143 data->rx_probe_req.ie == NULL)
3144 break;
3145 #ifdef CONFIG_AP
3146 if (wpa_s->ap_iface) {
3147 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3148 data->rx_probe_req.sa,
3149 data->rx_probe_req.da,
3150 data->rx_probe_req.bssid,
3151 data->rx_probe_req.ie,
3152 data->rx_probe_req.ie_len,
3153 data->rx_probe_req.ssi_signal);
3154 break;
3155 }
3156 #endif /* CONFIG_AP */
3157 #ifdef CONFIG_P2P
3158 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3159 data->rx_probe_req.da,
3160 data->rx_probe_req.bssid,
3161 data->rx_probe_req.ie,
3162 data->rx_probe_req.ie_len,
3163 data->rx_probe_req.ssi_signal);
3164 #endif /* CONFIG_P2P */
3165 break;
3166 case EVENT_REMAIN_ON_CHANNEL:
3167 #ifdef CONFIG_OFFCHANNEL
3168 offchannel_remain_on_channel_cb(
3169 wpa_s, data->remain_on_channel.freq,
3170 data->remain_on_channel.duration);
3171 #endif /* CONFIG_OFFCHANNEL */
3172 #ifdef CONFIG_P2P
3173 wpas_p2p_remain_on_channel_cb(
3174 wpa_s, data->remain_on_channel.freq,
3175 data->remain_on_channel.duration);
3176 #endif /* CONFIG_P2P */
3177 break;
3178 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3179 #ifdef CONFIG_OFFCHANNEL
3180 offchannel_cancel_remain_on_channel_cb(
3181 wpa_s, data->remain_on_channel.freq);
3182 #endif /* CONFIG_OFFCHANNEL */
3183 #ifdef CONFIG_P2P
3184 wpas_p2p_cancel_remain_on_channel_cb(
3185 wpa_s, data->remain_on_channel.freq);
3186 #endif /* CONFIG_P2P */
3187 break;
3188 case EVENT_EAPOL_RX:
3189 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3190 data->eapol_rx.data,
3191 data->eapol_rx.data_len);
3192 break;
3193 case EVENT_SIGNAL_CHANGE:
3194 bgscan_notify_signal_change(
3195 wpa_s, data->signal_change.above_threshold,
3196 data->signal_change.current_signal,
3197 data->signal_change.current_noise,
3198 data->signal_change.current_txrate);
3199 break;
3200 case EVENT_INTERFACE_ENABLED:
3201 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3202 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3203 wpa_supplicant_update_mac_addr(wpa_s);
3204 #ifdef CONFIG_AP
3205 if (!wpa_s->ap_iface) {
3206 wpa_supplicant_set_state(wpa_s,
3207 WPA_DISCONNECTED);
3208 wpa_supplicant_req_scan(wpa_s, 0, 0);
3209 } else
3210 wpa_supplicant_set_state(wpa_s,
3211 WPA_COMPLETED);
3212 #else /* CONFIG_AP */
3213 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3214 wpa_supplicant_req_scan(wpa_s, 0, 0);
3215 #endif /* CONFIG_AP */
3216 }
3217 break;
3218 case EVENT_INTERFACE_DISABLED:
3219 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3220 #ifdef CONFIG_P2P
3221 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3222 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3223 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3224 /*
3225 * The interface was externally disabled. Remove
3226 * it assuming an external entity will start a
3227 * new session if needed.
3228 */
3229 wpas_p2p_disconnect(wpa_s);
3230 break;
3231 }
3232 #endif /* CONFIG_P2P */
3233
3234 wpa_supplicant_mark_disassoc(wpa_s);
3235 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3236 break;
3237 case EVENT_CHANNEL_LIST_CHANGED:
3238 wpa_supplicant_update_channel_list(wpa_s);
3239 break;
3240 case EVENT_INTERFACE_UNAVAILABLE:
3241 #ifdef CONFIG_P2P
3242 wpas_p2p_interface_unavailable(wpa_s);
3243 #endif /* CONFIG_P2P */
3244 break;
3245 case EVENT_BEST_CHANNEL:
3246 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3247 "(%d %d %d)",
3248 data->best_chan.freq_24, data->best_chan.freq_5,
3249 data->best_chan.freq_overall);
3250 wpa_s->best_24_freq = data->best_chan.freq_24;
3251 wpa_s->best_5_freq = data->best_chan.freq_5;
3252 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3253 #ifdef CONFIG_P2P
3254 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3255 data->best_chan.freq_5,
3256 data->best_chan.freq_overall);
3257 #endif /* CONFIG_P2P */
3258 break;
3259 case EVENT_UNPROT_DEAUTH:
3260 wpa_supplicant_event_unprot_deauth(wpa_s,
3261 &data->unprot_deauth);
3262 break;
3263 case EVENT_UNPROT_DISASSOC:
3264 wpa_supplicant_event_unprot_disassoc(wpa_s,
3265 &data->unprot_disassoc);
3266 break;
3267 case EVENT_STATION_LOW_ACK:
3268 #ifdef CONFIG_AP
3269 if (wpa_s->ap_iface && data)
3270 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3271 data->low_ack.addr);
3272 #endif /* CONFIG_AP */
3273 #ifdef CONFIG_TDLS
3274 if (data)
3275 wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
3276 #endif /* CONFIG_TDLS */
3277 break;
3278 case EVENT_IBSS_PEER_LOST:
3279 #ifdef CONFIG_IBSS_RSN
3280 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3281 #endif /* CONFIG_IBSS_RSN */
3282 break;
3283 case EVENT_DRIVER_GTK_REKEY:
3284 if (os_memcmp(data->driver_gtk_rekey.bssid,
3285 wpa_s->bssid, ETH_ALEN))
3286 break;
3287 if (!wpa_s->wpa)
3288 break;
3289 wpa_sm_update_replay_ctr(wpa_s->wpa,
3290 data->driver_gtk_rekey.replay_ctr);
3291 break;
3292 case EVENT_SCHED_SCAN_STOPPED:
3293 wpa_s->pno = 0;
3294 wpa_s->sched_scanning = 0;
3295 wpa_supplicant_notify_scanning(wpa_s, 0);
3296
3297 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3298 break;
3299
3300 /*
3301 * Start a new sched scan to continue searching for more SSIDs
3302 * either if timed out or PNO schedule scan is pending.
3303 */
3304 if (wpa_s->sched_scan_timed_out || wpa_s->pno_sched_pending) {
3305
3306 if (wpa_supplicant_req_sched_scan(wpa_s) < 0 &&
3307 wpa_s->pno_sched_pending) {
3308 wpa_msg(wpa_s, MSG_ERROR, "Failed to schedule PNO");
3309 } else if (wpa_s->pno_sched_pending) {
3310 wpa_s->pno_sched_pending = 0;
3311 wpa_s->pno = 1;
3312 }
3313 }
3314
3315 break;
3316 case EVENT_WPS_BUTTON_PUSHED:
3317 #ifdef CONFIG_WPS
3318 wpas_wps_start_pbc(wpa_s, NULL, 0);
3319 #endif /* CONFIG_WPS */
3320 break;
3321 case EVENT_AVOID_FREQUENCIES:
3322 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3323 break;
3324 case EVENT_CONNECT_FAILED_REASON:
3325 #ifdef CONFIG_AP
3326 if (!wpa_s->ap_iface || !data)
3327 break;
3328 hostapd_event_connect_failed_reason(
3329 wpa_s->ap_iface->bss[0],
3330 data->connect_failed_reason.addr,
3331 data->connect_failed_reason.code);
3332 #endif /* CONFIG_AP */
3333 break;
3334 default:
3335 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3336 break;
3337 }
3338 }
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