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wpa_supplicant: Use relative time for TKIP Michael MIC failures
[thirdparty/hostap.git] / wpa_supplicant / events.c
1 /*
2 * WPA Supplicant - Driver event processing
3 * Copyright (c) 2003-2012, 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 #ifdef CONFIG_P2P
982 wpa_s->sta_scan_pending = 0;
983 #endif /* CONFIG_P2P */
984 return;
985 }
986
987 wpa_s->scan_for_connection = 1;
988 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
989 }
990
991
992 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
993 struct wpa_bss *selected,
994 struct wpa_ssid *ssid)
995 {
996 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
997 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
998 "PBC session overlap");
999 #ifdef CONFIG_P2P
1000 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
1001 return -1;
1002 #endif /* CONFIG_P2P */
1003
1004 #ifdef CONFIG_WPS
1005 wpas_wps_cancel(wpa_s);
1006 #endif /* CONFIG_WPS */
1007 return -1;
1008 }
1009
1010 wpa_msg(wpa_s, MSG_DEBUG,
1011 "Considering connect request: reassociate: %d selected: "
1012 MACSTR " bssid: " MACSTR " pending: " MACSTR
1013 " wpa_state: %s ssid=%p current_ssid=%p",
1014 wpa_s->reassociate, MAC2STR(selected->bssid),
1015 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1016 wpa_supplicant_state_txt(wpa_s->wpa_state),
1017 ssid, wpa_s->current_ssid);
1018
1019 /*
1020 * Do not trigger new association unless the BSSID has changed or if
1021 * reassociation is requested. If we are in process of associating with
1022 * the selected BSSID, do not trigger new attempt.
1023 */
1024 if (wpa_s->reassociate ||
1025 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1026 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1027 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1028 (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1029 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1030 0) ||
1031 (is_zero_ether_addr(wpa_s->pending_bssid) &&
1032 ssid != wpa_s->current_ssid)))) {
1033 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1034 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1035 return 0;
1036 }
1037 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1038 MAC2STR(selected->bssid));
1039 wpa_supplicant_associate(wpa_s, selected, ssid);
1040 } else {
1041 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1042 "connect with the selected AP");
1043 }
1044
1045 return 0;
1046 }
1047
1048
1049 static struct wpa_ssid *
1050 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1051 {
1052 int prio;
1053 struct wpa_ssid *ssid;
1054
1055 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1056 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1057 {
1058 if (wpas_network_disabled(wpa_s, ssid))
1059 continue;
1060 if (ssid->mode == IEEE80211_MODE_IBSS ||
1061 ssid->mode == IEEE80211_MODE_AP)
1062 return ssid;
1063 }
1064 }
1065 return NULL;
1066 }
1067
1068
1069 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1070 * on BSS added and BSS changed events */
1071 static void wpa_supplicant_rsn_preauth_scan_results(
1072 struct wpa_supplicant *wpa_s)
1073 {
1074 struct wpa_bss *bss;
1075
1076 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1077 return;
1078
1079 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1080 const u8 *ssid, *rsn;
1081
1082 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1083 if (ssid == NULL)
1084 continue;
1085
1086 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1087 if (rsn == NULL)
1088 continue;
1089
1090 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1091 }
1092
1093 }
1094
1095
1096 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1097 struct wpa_bss *selected,
1098 struct wpa_ssid *ssid)
1099 {
1100 struct wpa_bss *current_bss = NULL;
1101 int min_diff;
1102
1103 if (wpa_s->reassociate)
1104 return 1; /* explicit request to reassociate */
1105 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1106 return 1; /* we are not associated; continue */
1107 if (wpa_s->current_ssid == NULL)
1108 return 1; /* unknown current SSID */
1109 if (wpa_s->current_ssid != ssid)
1110 return 1; /* different network block */
1111
1112 if (wpas_driver_bss_selection(wpa_s))
1113 return 0; /* Driver-based roaming */
1114
1115 if (wpa_s->current_ssid->ssid)
1116 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1117 wpa_s->current_ssid->ssid,
1118 wpa_s->current_ssid->ssid_len);
1119 if (!current_bss)
1120 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1121
1122 if (!current_bss)
1123 return 1; /* current BSS not seen in scan results */
1124
1125 if (current_bss == selected)
1126 return 0;
1127
1128 if (selected->last_update_idx > current_bss->last_update_idx)
1129 return 1; /* current BSS not seen in the last scan */
1130
1131 #ifndef CONFIG_NO_ROAMING
1132 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1133 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1134 MAC2STR(current_bss->bssid), current_bss->level);
1135 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1136 MAC2STR(selected->bssid), selected->level);
1137
1138 if (wpa_s->current_ssid->bssid_set &&
1139 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1140 0) {
1141 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1142 "has preferred BSSID");
1143 return 1;
1144 }
1145
1146 if (current_bss->level < 0 && current_bss->level > selected->level) {
1147 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1148 "signal level");
1149 return 0;
1150 }
1151
1152 min_diff = 2;
1153 if (current_bss->level < 0) {
1154 if (current_bss->level < -85)
1155 min_diff = 1;
1156 else if (current_bss->level < -80)
1157 min_diff = 2;
1158 else if (current_bss->level < -75)
1159 min_diff = 3;
1160 else if (current_bss->level < -70)
1161 min_diff = 4;
1162 else
1163 min_diff = 5;
1164 }
1165 if (abs(current_bss->level - selected->level) < min_diff) {
1166 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1167 "in signal level");
1168 return 0;
1169 }
1170
1171 return 1;
1172 #else /* CONFIG_NO_ROAMING */
1173 return 0;
1174 #endif /* CONFIG_NO_ROAMING */
1175 }
1176
1177
1178 /* Return != 0 if no scan results could be fetched or if scan results should not
1179 * be shared with other virtual interfaces. */
1180 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1181 union wpa_event_data *data,
1182 int own_request)
1183 {
1184 struct wpa_scan_results *scan_res;
1185 int ap = 0;
1186 #ifndef CONFIG_NO_RANDOM_POOL
1187 size_t i, num;
1188 #endif /* CONFIG_NO_RANDOM_POOL */
1189
1190 #ifdef CONFIG_AP
1191 if (wpa_s->ap_iface)
1192 ap = 1;
1193 #endif /* CONFIG_AP */
1194
1195 wpa_supplicant_notify_scanning(wpa_s, 0);
1196
1197 #ifdef CONFIG_P2P
1198 if (own_request && wpa_s->global->p2p_cb_on_scan_complete &&
1199 !wpa_s->global->p2p_disabled &&
1200 wpa_s->global->p2p != NULL && !wpa_s->sta_scan_pending &&
1201 !wpa_s->scan_res_handler) {
1202 wpa_s->global->p2p_cb_on_scan_complete = 0;
1203 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
1204 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
1205 "stopped scan processing");
1206 wpa_s->scan_req = wpa_s->last_scan_req;
1207 wpa_s->sta_scan_pending = 1;
1208 wpa_supplicant_req_scan(wpa_s, 5, 0);
1209 return -1;
1210 }
1211 }
1212 wpa_s->sta_scan_pending = 0;
1213 #endif /* CONFIG_P2P */
1214
1215 scan_res = wpa_supplicant_get_scan_results(wpa_s,
1216 data ? &data->scan_info :
1217 NULL, 1);
1218 if (scan_res == NULL) {
1219 if (wpa_s->conf->ap_scan == 2 || ap ||
1220 wpa_s->scan_res_handler == scan_only_handler)
1221 return -1;
1222 if (!own_request)
1223 return -1;
1224 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1225 "scanning again");
1226 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1227 return -1;
1228 }
1229
1230 #ifndef CONFIG_NO_RANDOM_POOL
1231 num = scan_res->num;
1232 if (num > 10)
1233 num = 10;
1234 for (i = 0; i < num; i++) {
1235 u8 buf[5];
1236 struct wpa_scan_res *res = scan_res->res[i];
1237 buf[0] = res->bssid[5];
1238 buf[1] = res->qual & 0xff;
1239 buf[2] = res->noise & 0xff;
1240 buf[3] = res->level & 0xff;
1241 buf[4] = res->tsf & 0xff;
1242 random_add_randomness(buf, sizeof(buf));
1243 }
1244 #endif /* CONFIG_NO_RANDOM_POOL */
1245
1246 if (own_request && wpa_s->scan_res_handler) {
1247 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1248 struct wpa_scan_results *scan_res);
1249
1250 scan_res_handler = wpa_s->scan_res_handler;
1251 wpa_s->scan_res_handler = NULL;
1252 scan_res_handler(wpa_s, scan_res);
1253
1254 wpa_scan_results_free(scan_res);
1255 return -2;
1256 }
1257
1258 if (ap) {
1259 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1260 #ifdef CONFIG_AP
1261 if (wpa_s->ap_iface->scan_cb)
1262 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1263 #endif /* CONFIG_AP */
1264 wpa_scan_results_free(scan_res);
1265 return 0;
1266 }
1267
1268 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1269 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1270 wpas_notify_scan_results(wpa_s);
1271
1272 wpas_notify_scan_done(wpa_s, 1);
1273
1274 if (sme_proc_obss_scan(wpa_s) > 0) {
1275 wpa_scan_results_free(scan_res);
1276 return 0;
1277 }
1278
1279 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
1280 wpa_scan_results_free(scan_res);
1281 return 0;
1282 }
1283
1284 if (autoscan_notify_scan(wpa_s, scan_res)) {
1285 wpa_scan_results_free(scan_res);
1286 return 0;
1287 }
1288
1289 if (wpa_s->disconnected) {
1290 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1291 wpa_scan_results_free(scan_res);
1292 return 0;
1293 }
1294
1295 if (!wpas_driver_bss_selection(wpa_s) &&
1296 bgscan_notify_scan(wpa_s, scan_res) == 1) {
1297 wpa_scan_results_free(scan_res);
1298 return 0;
1299 }
1300
1301 wpas_wps_update_ap_info(wpa_s, scan_res);
1302
1303 wpa_scan_results_free(scan_res);
1304
1305 return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
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 if (wpa_supplicant_req_sched_scan(wpa_s))
1385 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1386 timeout_usec);
1387 }
1388 }
1389 return 0;
1390 }
1391
1392
1393 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1394 union wpa_event_data *data)
1395 {
1396 struct wpa_supplicant *ifs;
1397
1398 if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1399 /*
1400 * If no scan results could be fetched, then no need to
1401 * notify those interfaces that did not actually request
1402 * this scan. Similarly, if scan results started a new operation on this
1403 * interface, do not notify other interfaces to avoid concurrent
1404 * operations during a connection attempt.
1405 */
1406 return;
1407 }
1408
1409 /*
1410 * Check other interfaces to see if they share the same radio. If
1411 * so, they get updated with this same scan info.
1412 */
1413 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1414 radio_list) {
1415 if (ifs != wpa_s) {
1416 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1417 "sibling", ifs->ifname);
1418 _wpa_supplicant_event_scan_results(ifs, data, 0);
1419 }
1420 }
1421 }
1422
1423 #endif /* CONFIG_NO_SCAN_PROCESSING */
1424
1425
1426 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1427 {
1428 #ifdef CONFIG_NO_SCAN_PROCESSING
1429 return -1;
1430 #else /* CONFIG_NO_SCAN_PROCESSING */
1431 struct os_time now;
1432
1433 if (wpa_s->last_scan_res_used <= 0)
1434 return -1;
1435
1436 os_get_time(&now);
1437 if (now.sec - wpa_s->last_scan.sec > 5) {
1438 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1439 return -1;
1440 }
1441
1442 return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1443 #endif /* CONFIG_NO_SCAN_PROCESSING */
1444 }
1445
1446 #ifdef CONFIG_WNM
1447
1448 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1449 {
1450 struct wpa_supplicant *wpa_s = eloop_ctx;
1451
1452 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1453 return;
1454
1455 if (!wpa_s->no_keep_alive) {
1456 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1457 MAC2STR(wpa_s->bssid));
1458 /* TODO: could skip this if normal data traffic has been sent */
1459 /* TODO: Consider using some more appropriate data frame for
1460 * this */
1461 if (wpa_s->l2)
1462 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1463 (u8 *) "", 0);
1464 }
1465
1466 #ifdef CONFIG_SME
1467 if (wpa_s->sme.bss_max_idle_period) {
1468 unsigned int msec;
1469 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1470 if (msec > 100)
1471 msec -= 100;
1472 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1473 wnm_bss_keep_alive, wpa_s, NULL);
1474 }
1475 #endif /* CONFIG_SME */
1476 }
1477
1478
1479 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1480 const u8 *ies, size_t ies_len)
1481 {
1482 struct ieee802_11_elems elems;
1483
1484 if (ies == NULL)
1485 return;
1486
1487 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1488 return;
1489
1490 #ifdef CONFIG_SME
1491 if (elems.bss_max_idle_period) {
1492 unsigned int msec;
1493 wpa_s->sme.bss_max_idle_period =
1494 WPA_GET_LE16(elems.bss_max_idle_period);
1495 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1496 "TU)%s", wpa_s->sme.bss_max_idle_period,
1497 (elems.bss_max_idle_period[2] & 0x01) ?
1498 " (protected keep-live required)" : "");
1499 if (wpa_s->sme.bss_max_idle_period == 0)
1500 wpa_s->sme.bss_max_idle_period = 1;
1501 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1502 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1503 /* msec times 1000 */
1504 msec = wpa_s->sme.bss_max_idle_period * 1024;
1505 if (msec > 100)
1506 msec -= 100;
1507 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1508 wnm_bss_keep_alive, wpa_s,
1509 NULL);
1510 }
1511 }
1512 #endif /* CONFIG_SME */
1513 }
1514
1515 #endif /* CONFIG_WNM */
1516
1517
1518 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1519 {
1520 #ifdef CONFIG_WNM
1521 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1522 #endif /* CONFIG_WNM */
1523 }
1524
1525
1526 #ifdef CONFIG_INTERWORKING
1527
1528 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1529 size_t len)
1530 {
1531 int res;
1532
1533 wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1534 res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1535 if (res) {
1536 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1537 }
1538
1539 return res;
1540 }
1541
1542
1543 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1544 const u8 *ies, size_t ies_len)
1545 {
1546 struct ieee802_11_elems elems;
1547
1548 if (ies == NULL)
1549 return;
1550
1551 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1552 return;
1553
1554 if (elems.qos_map_set) {
1555 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1556 elems.qos_map_set_len);
1557 }
1558 }
1559
1560 #endif /* CONFIG_INTERWORKING */
1561
1562
1563 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1564 union wpa_event_data *data)
1565 {
1566 int l, len, found = 0, wpa_found, rsn_found;
1567 const u8 *p;
1568 #ifdef CONFIG_IEEE80211R
1569 u8 bssid[ETH_ALEN];
1570 #endif /* CONFIG_IEEE80211R */
1571
1572 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1573 if (data->assoc_info.req_ies)
1574 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1575 data->assoc_info.req_ies_len);
1576 if (data->assoc_info.resp_ies) {
1577 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1578 data->assoc_info.resp_ies_len);
1579 #ifdef CONFIG_TDLS
1580 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1581 data->assoc_info.resp_ies_len);
1582 #endif /* CONFIG_TDLS */
1583 #ifdef CONFIG_WNM
1584 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1585 data->assoc_info.resp_ies_len);
1586 #endif /* CONFIG_WNM */
1587 #ifdef CONFIG_INTERWORKING
1588 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1589 data->assoc_info.resp_ies_len);
1590 #endif /* CONFIG_INTERWORKING */
1591 }
1592 if (data->assoc_info.beacon_ies)
1593 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1594 data->assoc_info.beacon_ies,
1595 data->assoc_info.beacon_ies_len);
1596 if (data->assoc_info.freq)
1597 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1598 data->assoc_info.freq);
1599
1600 p = data->assoc_info.req_ies;
1601 l = data->assoc_info.req_ies_len;
1602
1603 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1604 while (p && l >= 2) {
1605 len = p[1] + 2;
1606 if (len > l) {
1607 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1608 p, l);
1609 break;
1610 }
1611 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1612 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1613 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1614 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1615 break;
1616 found = 1;
1617 wpa_find_assoc_pmkid(wpa_s);
1618 break;
1619 }
1620 l -= len;
1621 p += len;
1622 }
1623 if (!found && data->assoc_info.req_ies)
1624 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1625
1626 #ifdef CONFIG_IEEE80211R
1627 #ifdef CONFIG_SME
1628 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1629 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1630 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1631 data->assoc_info.resp_ies,
1632 data->assoc_info.resp_ies_len,
1633 bssid) < 0) {
1634 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1635 "Reassociation Response failed");
1636 wpa_supplicant_deauthenticate(
1637 wpa_s, WLAN_REASON_INVALID_IE);
1638 return -1;
1639 }
1640 }
1641
1642 p = data->assoc_info.resp_ies;
1643 l = data->assoc_info.resp_ies_len;
1644
1645 #ifdef CONFIG_WPS_STRICT
1646 if (p && wpa_s->current_ssid &&
1647 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1648 struct wpabuf *wps;
1649 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1650 if (wps == NULL) {
1651 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1652 "include WPS IE in (Re)Association Response");
1653 return -1;
1654 }
1655
1656 if (wps_validate_assoc_resp(wps) < 0) {
1657 wpabuf_free(wps);
1658 wpa_supplicant_deauthenticate(
1659 wpa_s, WLAN_REASON_INVALID_IE);
1660 return -1;
1661 }
1662 wpabuf_free(wps);
1663 }
1664 #endif /* CONFIG_WPS_STRICT */
1665
1666 /* Go through the IEs and make a copy of the MDIE, if present. */
1667 while (p && l >= 2) {
1668 len = p[1] + 2;
1669 if (len > l) {
1670 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1671 p, l);
1672 break;
1673 }
1674 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1675 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1676 wpa_s->sme.ft_used = 1;
1677 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1678 MOBILITY_DOMAIN_ID_LEN);
1679 break;
1680 }
1681 l -= len;
1682 p += len;
1683 }
1684 #endif /* CONFIG_SME */
1685
1686 /* Process FT when SME is in the driver */
1687 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1688 wpa_ft_is_completed(wpa_s->wpa)) {
1689 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1690 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1691 data->assoc_info.resp_ies,
1692 data->assoc_info.resp_ies_len,
1693 bssid) < 0) {
1694 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1695 "Reassociation Response failed");
1696 wpa_supplicant_deauthenticate(
1697 wpa_s, WLAN_REASON_INVALID_IE);
1698 return -1;
1699 }
1700 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1701 }
1702
1703 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1704 data->assoc_info.resp_ies_len);
1705 #endif /* CONFIG_IEEE80211R */
1706
1707 /* WPA/RSN IE from Beacon/ProbeResp */
1708 p = data->assoc_info.beacon_ies;
1709 l = data->assoc_info.beacon_ies_len;
1710
1711 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1712 */
1713 wpa_found = rsn_found = 0;
1714 while (p && l >= 2) {
1715 len = p[1] + 2;
1716 if (len > l) {
1717 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1718 p, l);
1719 break;
1720 }
1721 if (!wpa_found &&
1722 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1723 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1724 wpa_found = 1;
1725 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1726 }
1727
1728 if (!rsn_found &&
1729 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1730 rsn_found = 1;
1731 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1732 }
1733
1734 l -= len;
1735 p += len;
1736 }
1737
1738 if (!wpa_found && data->assoc_info.beacon_ies)
1739 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1740 if (!rsn_found && data->assoc_info.beacon_ies)
1741 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1742 if (wpa_found || rsn_found)
1743 wpa_s->ap_ies_from_associnfo = 1;
1744
1745 if (wpa_s->assoc_freq && data->assoc_info.freq &&
1746 wpa_s->assoc_freq != data->assoc_info.freq) {
1747 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1748 "%u to %u MHz",
1749 wpa_s->assoc_freq, data->assoc_info.freq);
1750 wpa_supplicant_update_scan_results(wpa_s);
1751 }
1752
1753 wpa_s->assoc_freq = data->assoc_info.freq;
1754
1755 return 0;
1756 }
1757
1758
1759 static struct wpa_bss * wpa_supplicant_get_new_bss(
1760 struct wpa_supplicant *wpa_s, const u8 *bssid)
1761 {
1762 struct wpa_bss *bss = NULL;
1763 struct wpa_ssid *ssid = wpa_s->current_ssid;
1764
1765 if (ssid->ssid_len > 0)
1766 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
1767 if (!bss)
1768 bss = wpa_bss_get_bssid(wpa_s, bssid);
1769
1770 return bss;
1771 }
1772
1773
1774 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1775 {
1776 const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1777
1778 if (!wpa_s->current_bss || !wpa_s->current_ssid)
1779 return -1;
1780
1781 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1782 return 0;
1783
1784 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1785 WPA_IE_VENDOR_TYPE);
1786 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1787
1788 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1789 bss_wpa ? 2 + bss_wpa[1] : 0) ||
1790 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1791 bss_rsn ? 2 + bss_rsn[1] : 0))
1792 return -1;
1793
1794 return 0;
1795 }
1796
1797
1798 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1799 union wpa_event_data *data)
1800 {
1801 u8 bssid[ETH_ALEN];
1802 int ft_completed;
1803
1804 #ifdef CONFIG_AP
1805 if (wpa_s->ap_iface) {
1806 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1807 data->assoc_info.addr,
1808 data->assoc_info.req_ies,
1809 data->assoc_info.req_ies_len,
1810 data->assoc_info.reassoc);
1811 return;
1812 }
1813 #endif /* CONFIG_AP */
1814
1815 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1816 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1817 return;
1818
1819 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1820 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1821 wpa_supplicant_deauthenticate(
1822 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1823 return;
1824 }
1825
1826 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1827 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1828 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1829 MACSTR, MAC2STR(bssid));
1830 random_add_randomness(bssid, ETH_ALEN);
1831 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1832 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1833 wpas_notify_bssid_changed(wpa_s);
1834
1835 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1836 wpa_clear_keys(wpa_s, bssid);
1837 }
1838 if (wpa_supplicant_select_config(wpa_s) < 0) {
1839 wpa_supplicant_deauthenticate(
1840 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1841 return;
1842 }
1843 if (wpa_s->current_ssid) {
1844 struct wpa_bss *bss = NULL;
1845
1846 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1847 if (!bss) {
1848 wpa_supplicant_update_scan_results(wpa_s);
1849
1850 /* Get the BSS from the new scan results */
1851 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1852 }
1853
1854 if (bss)
1855 wpa_s->current_bss = bss;
1856 }
1857
1858 if (wpa_s->conf->ap_scan == 1 &&
1859 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1860 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1861 wpa_msg(wpa_s, MSG_WARNING,
1862 "WPA/RSN IEs not updated");
1863 }
1864 }
1865
1866 #ifdef CONFIG_SME
1867 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1868 wpa_s->sme.prev_bssid_set = 1;
1869 #endif /* CONFIG_SME */
1870
1871 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1872 if (wpa_s->current_ssid) {
1873 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1874 * initialized before association, but for other modes,
1875 * initialize PC/SC here, if the current configuration needs
1876 * smartcard or SIM/USIM. */
1877 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1878 }
1879 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1880 if (wpa_s->l2)
1881 l2_packet_notify_auth_start(wpa_s->l2);
1882
1883 /*
1884 * Set portEnabled first to FALSE in order to get EAP state machine out
1885 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1886 * state machine may transit to AUTHENTICATING state based on obsolete
1887 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1888 * AUTHENTICATED without ever giving chance to EAP state machine to
1889 * reset the state.
1890 */
1891 if (!ft_completed) {
1892 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1893 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1894 }
1895 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1896 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1897 /* 802.1X::portControl = Auto */
1898 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1899 wpa_s->eapol_received = 0;
1900 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1901 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1902 (wpa_s->current_ssid &&
1903 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1904 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
1905 (wpa_s->drv_flags &
1906 WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1907 /*
1908 * Set the key after having received joined-IBSS event
1909 * from the driver.
1910 */
1911 wpa_supplicant_set_wpa_none_key(wpa_s,
1912 wpa_s->current_ssid);
1913 }
1914 wpa_supplicant_cancel_auth_timeout(wpa_s);
1915 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1916 } else if (!ft_completed) {
1917 /* Timeout for receiving the first EAPOL packet */
1918 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1919 }
1920 wpa_supplicant_cancel_scan(wpa_s);
1921
1922 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1923 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1924 /*
1925 * We are done; the driver will take care of RSN 4-way
1926 * handshake.
1927 */
1928 wpa_supplicant_cancel_auth_timeout(wpa_s);
1929 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1930 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1931 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1932 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1933 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1934 /*
1935 * The driver will take care of RSN 4-way handshake, so we need
1936 * to allow EAPOL supplicant to complete its work without
1937 * waiting for WPA supplicant.
1938 */
1939 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1940 } else if (ft_completed) {
1941 /*
1942 * FT protocol completed - make sure EAPOL state machine ends
1943 * up in authenticated.
1944 */
1945 wpa_supplicant_cancel_auth_timeout(wpa_s);
1946 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1947 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1948 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1949 }
1950
1951 wpa_s->last_eapol_matches_bssid = 0;
1952
1953 if (wpa_s->pending_eapol_rx) {
1954 struct os_reltime now, age;
1955 os_get_reltime(&now);
1956 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1957 if (age.sec == 0 && age.usec < 100000 &&
1958 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1959 0) {
1960 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1961 "frame that was received just before "
1962 "association notification");
1963 wpa_supplicant_rx_eapol(
1964 wpa_s, wpa_s->pending_eapol_rx_src,
1965 wpabuf_head(wpa_s->pending_eapol_rx),
1966 wpabuf_len(wpa_s->pending_eapol_rx));
1967 }
1968 wpabuf_free(wpa_s->pending_eapol_rx);
1969 wpa_s->pending_eapol_rx = NULL;
1970 }
1971
1972 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1973 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1974 wpa_s->current_ssid &&
1975 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1976 /* Set static WEP keys again */
1977 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1978 }
1979
1980 #ifdef CONFIG_IBSS_RSN
1981 if (wpa_s->current_ssid &&
1982 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1983 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1984 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1985 wpa_s->ibss_rsn == NULL) {
1986 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1987 if (!wpa_s->ibss_rsn) {
1988 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1989 wpa_supplicant_deauthenticate(
1990 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1991 return;
1992 }
1993
1994 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1995 }
1996 #endif /* CONFIG_IBSS_RSN */
1997
1998 wpas_wps_notify_assoc(wpa_s, bssid);
1999 }
2000
2001
2002 static int disconnect_reason_recoverable(u16 reason_code)
2003 {
2004 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2005 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2006 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2007 }
2008
2009
2010 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2011 u16 reason_code,
2012 int locally_generated)
2013 {
2014 const u8 *bssid;
2015
2016 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2017 /*
2018 * At least Host AP driver and a Prism3 card seemed to be
2019 * generating streams of disconnected events when configuring
2020 * IBSS for WPA-None. Ignore them for now.
2021 */
2022 return;
2023 }
2024
2025 bssid = wpa_s->bssid;
2026 if (is_zero_ether_addr(bssid))
2027 bssid = wpa_s->pending_bssid;
2028
2029 if (!is_zero_ether_addr(bssid) ||
2030 wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2031 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2032 " reason=%d%s",
2033 MAC2STR(bssid), reason_code,
2034 locally_generated ? " locally_generated=1" : "");
2035 }
2036 }
2037
2038
2039 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2040 int locally_generated)
2041 {
2042 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2043 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2044 return 0; /* Not in 4-way handshake with PSK */
2045
2046 /*
2047 * It looks like connection was lost while trying to go through PSK
2048 * 4-way handshake. Filter out known disconnection cases that are caused
2049 * by something else than PSK mismatch to avoid confusing reports.
2050 */
2051
2052 if (locally_generated) {
2053 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2054 return 0;
2055 }
2056
2057 return 1;
2058 }
2059
2060
2061 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2062 u16 reason_code,
2063 int locally_generated)
2064 {
2065 const u8 *bssid;
2066 int authenticating;
2067 u8 prev_pending_bssid[ETH_ALEN];
2068 struct wpa_bss *fast_reconnect = NULL;
2069 #ifndef CONFIG_NO_SCAN_PROCESSING
2070 struct wpa_ssid *fast_reconnect_ssid = NULL;
2071 #endif /* CONFIG_NO_SCAN_PROCESSING */
2072 struct wpa_ssid *last_ssid;
2073
2074 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2075 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2076
2077 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2078 /*
2079 * At least Host AP driver and a Prism3 card seemed to be
2080 * generating streams of disconnected events when configuring
2081 * IBSS for WPA-None. Ignore them for now.
2082 */
2083 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2084 "IBSS/WPA-None mode");
2085 return;
2086 }
2087
2088 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2089 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2090 "pre-shared key may be incorrect");
2091 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2092 return; /* P2P group removed */
2093 wpas_auth_failed(wpa_s);
2094 }
2095 if (!wpa_s->disconnected &&
2096 (!wpa_s->auto_reconnect_disabled ||
2097 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)) {
2098 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2099 "reconnect (wps=%d wpa_state=%d)",
2100 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2101 wpa_s->wpa_state);
2102 if (wpa_s->wpa_state == WPA_COMPLETED &&
2103 wpa_s->current_ssid &&
2104 wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2105 !locally_generated &&
2106 disconnect_reason_recoverable(reason_code)) {
2107 /*
2108 * It looks like the AP has dropped association with
2109 * us, but could allow us to get back in. Try to
2110 * reconnect to the same BSS without full scan to save
2111 * time for some common cases.
2112 */
2113 fast_reconnect = wpa_s->current_bss;
2114 #ifndef CONFIG_NO_SCAN_PROCESSING
2115 fast_reconnect_ssid = wpa_s->current_ssid;
2116 #endif /* CONFIG_NO_SCAN_PROCESSING */
2117 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2118 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2119 else
2120 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2121 "immediate scan");
2122 } else {
2123 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2124 "try to re-connect");
2125 wpa_s->reassociate = 0;
2126 wpa_s->disconnected = 1;
2127 wpa_supplicant_cancel_sched_scan(wpa_s);
2128 }
2129 bssid = wpa_s->bssid;
2130 if (is_zero_ether_addr(bssid))
2131 bssid = wpa_s->pending_bssid;
2132 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2133 wpas_connection_failed(wpa_s, bssid);
2134 wpa_sm_notify_disassoc(wpa_s->wpa);
2135 if (locally_generated)
2136 wpa_s->disconnect_reason = -reason_code;
2137 else
2138 wpa_s->disconnect_reason = reason_code;
2139 wpas_notify_disconnect_reason(wpa_s);
2140 if (wpa_supplicant_dynamic_keys(wpa_s)) {
2141 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2142 wpa_s->keys_cleared = 0;
2143 wpa_clear_keys(wpa_s, wpa_s->bssid);
2144 }
2145 last_ssid = wpa_s->current_ssid;
2146 wpa_supplicant_mark_disassoc(wpa_s);
2147
2148 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2149 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2150 wpa_s->current_ssid = last_ssid;
2151 }
2152
2153 if (fast_reconnect) {
2154 #ifndef CONFIG_NO_SCAN_PROCESSING
2155 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2156 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2157 fast_reconnect_ssid) < 0) {
2158 /* Recover through full scan */
2159 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2160 }
2161 #endif /* CONFIG_NO_SCAN_PROCESSING */
2162 }
2163 }
2164
2165
2166 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2167 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2168 {
2169 struct wpa_supplicant *wpa_s = eloop_ctx;
2170
2171 if (!wpa_s->pending_mic_error_report)
2172 return;
2173
2174 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2175 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2176 wpa_s->pending_mic_error_report = 0;
2177 }
2178 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2179
2180
2181 static void
2182 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2183 union wpa_event_data *data)
2184 {
2185 int pairwise;
2186 struct os_reltime t;
2187
2188 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2189 pairwise = (data && data->michael_mic_failure.unicast);
2190 os_get_reltime(&t);
2191 if ((wpa_s->last_michael_mic_error.sec &&
2192 !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2193 wpa_s->pending_mic_error_report) {
2194 if (wpa_s->pending_mic_error_report) {
2195 /*
2196 * Send the pending MIC error report immediately since
2197 * we are going to start countermeasures and AP better
2198 * do the same.
2199 */
2200 wpa_sm_key_request(wpa_s->wpa, 1,
2201 wpa_s->pending_mic_error_pairwise);
2202 }
2203
2204 /* Send the new MIC error report immediately since we are going
2205 * to start countermeasures and AP better do the same.
2206 */
2207 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2208
2209 /* initialize countermeasures */
2210 wpa_s->countermeasures = 1;
2211
2212 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2213
2214 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2215
2216 /*
2217 * Need to wait for completion of request frame. We do not get
2218 * any callback for the message completion, so just wait a
2219 * short while and hope for the best. */
2220 os_sleep(0, 10000);
2221
2222 wpa_drv_set_countermeasures(wpa_s, 1);
2223 wpa_supplicant_deauthenticate(wpa_s,
2224 WLAN_REASON_MICHAEL_MIC_FAILURE);
2225 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2226 wpa_s, NULL);
2227 eloop_register_timeout(60, 0,
2228 wpa_supplicant_stop_countermeasures,
2229 wpa_s, NULL);
2230 /* TODO: mark the AP rejected for 60 second. STA is
2231 * allowed to associate with another AP.. */
2232 } else {
2233 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2234 if (wpa_s->mic_errors_seen) {
2235 /*
2236 * Reduce the effectiveness of Michael MIC error
2237 * reports as a means for attacking against TKIP if
2238 * more than one MIC failure is noticed with the same
2239 * PTK. We delay the transmission of the reports by a
2240 * random time between 0 and 60 seconds in order to
2241 * force the attacker wait 60 seconds before getting
2242 * the information on whether a frame resulted in a MIC
2243 * failure.
2244 */
2245 u8 rval[4];
2246 int sec;
2247
2248 if (os_get_random(rval, sizeof(rval)) < 0)
2249 sec = os_random() % 60;
2250 else
2251 sec = WPA_GET_BE32(rval) % 60;
2252 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2253 "report %d seconds", sec);
2254 wpa_s->pending_mic_error_report = 1;
2255 wpa_s->pending_mic_error_pairwise = pairwise;
2256 eloop_cancel_timeout(
2257 wpa_supplicant_delayed_mic_error_report,
2258 wpa_s, NULL);
2259 eloop_register_timeout(
2260 sec, os_random() % 1000000,
2261 wpa_supplicant_delayed_mic_error_report,
2262 wpa_s, NULL);
2263 } else {
2264 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2265 }
2266 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2267 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2268 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2269 }
2270 wpa_s->last_michael_mic_error = t;
2271 wpa_s->mic_errors_seen++;
2272 }
2273
2274
2275 #ifdef CONFIG_TERMINATE_ONLASTIF
2276 static int any_interfaces(struct wpa_supplicant *head)
2277 {
2278 struct wpa_supplicant *wpa_s;
2279
2280 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2281 if (!wpa_s->interface_removed)
2282 return 1;
2283 return 0;
2284 }
2285 #endif /* CONFIG_TERMINATE_ONLASTIF */
2286
2287
2288 static void
2289 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2290 union wpa_event_data *data)
2291 {
2292 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2293 return;
2294
2295 switch (data->interface_status.ievent) {
2296 case EVENT_INTERFACE_ADDED:
2297 if (!wpa_s->interface_removed)
2298 break;
2299 wpa_s->interface_removed = 0;
2300 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2301 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2302 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2303 "driver after interface was added");
2304 }
2305 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2306 break;
2307 case EVENT_INTERFACE_REMOVED:
2308 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2309 wpa_s->interface_removed = 1;
2310 wpa_supplicant_mark_disassoc(wpa_s);
2311 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2312 l2_packet_deinit(wpa_s->l2);
2313 wpa_s->l2 = NULL;
2314 #ifdef CONFIG_IBSS_RSN
2315 ibss_rsn_deinit(wpa_s->ibss_rsn);
2316 wpa_s->ibss_rsn = NULL;
2317 #endif /* CONFIG_IBSS_RSN */
2318 #ifdef CONFIG_TERMINATE_ONLASTIF
2319 /* check if last interface */
2320 if (!any_interfaces(wpa_s->global->ifaces))
2321 eloop_terminate();
2322 #endif /* CONFIG_TERMINATE_ONLASTIF */
2323 break;
2324 }
2325 }
2326
2327
2328 #ifdef CONFIG_PEERKEY
2329 static void
2330 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2331 union wpa_event_data *data)
2332 {
2333 if (data == NULL)
2334 return;
2335 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2336 }
2337 #endif /* CONFIG_PEERKEY */
2338
2339
2340 #ifdef CONFIG_TDLS
2341 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2342 union wpa_event_data *data)
2343 {
2344 if (data == NULL)
2345 return;
2346 switch (data->tdls.oper) {
2347 case TDLS_REQUEST_SETUP:
2348 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2349 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2350 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2351 else
2352 wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2353 break;
2354 case TDLS_REQUEST_TEARDOWN:
2355 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2356 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2357 data->tdls.reason_code);
2358 else
2359 wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2360 data->tdls.peer);
2361 break;
2362 }
2363 }
2364 #endif /* CONFIG_TDLS */
2365
2366
2367 #ifdef CONFIG_WNM
2368 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2369 union wpa_event_data *data)
2370 {
2371 if (data == NULL)
2372 return;
2373 switch (data->wnm.oper) {
2374 case WNM_OPER_SLEEP:
2375 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2376 "(action=%d, intval=%d)",
2377 data->wnm.sleep_action, data->wnm.sleep_intval);
2378 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2379 data->wnm.sleep_intval, NULL);
2380 break;
2381 }
2382 }
2383 #endif /* CONFIG_WNM */
2384
2385
2386 #ifdef CONFIG_IEEE80211R
2387 static void
2388 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2389 union wpa_event_data *data)
2390 {
2391 if (data == NULL)
2392 return;
2393
2394 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2395 data->ft_ies.ies_len,
2396 data->ft_ies.ft_action,
2397 data->ft_ies.target_ap,
2398 data->ft_ies.ric_ies,
2399 data->ft_ies.ric_ies_len) < 0) {
2400 /* TODO: prevent MLME/driver from trying to associate? */
2401 }
2402 }
2403 #endif /* CONFIG_IEEE80211R */
2404
2405
2406 #ifdef CONFIG_IBSS_RSN
2407 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2408 union wpa_event_data *data)
2409 {
2410 struct wpa_ssid *ssid;
2411 if (wpa_s->wpa_state < WPA_ASSOCIATED)
2412 return;
2413 if (data == NULL)
2414 return;
2415 ssid = wpa_s->current_ssid;
2416 if (ssid == NULL)
2417 return;
2418 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2419 return;
2420
2421 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2422 }
2423
2424
2425 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2426 union wpa_event_data *data)
2427 {
2428 struct wpa_ssid *ssid = wpa_s->current_ssid;
2429
2430 if (ssid == NULL)
2431 return;
2432
2433 /* check if the ssid is correctly configured as IBSS/RSN */
2434 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2435 return;
2436
2437 ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2438 data->rx_mgmt.frame_len);
2439 }
2440 #endif /* CONFIG_IBSS_RSN */
2441
2442
2443 #ifdef CONFIG_IEEE80211R
2444 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2445 size_t len)
2446 {
2447 const u8 *sta_addr, *target_ap_addr;
2448 u16 status;
2449
2450 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2451 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2452 return; /* only SME case supported for now */
2453 if (len < 1 + 2 * ETH_ALEN + 2)
2454 return;
2455 if (data[0] != 2)
2456 return; /* Only FT Action Response is supported for now */
2457 sta_addr = data + 1;
2458 target_ap_addr = data + 1 + ETH_ALEN;
2459 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2460 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2461 MACSTR " TargetAP " MACSTR " status %u",
2462 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2463
2464 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2465 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2466 " in FT Action Response", MAC2STR(sta_addr));
2467 return;
2468 }
2469
2470 if (status) {
2471 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2472 "failure (status code %d)", status);
2473 /* TODO: report error to FT code(?) */
2474 return;
2475 }
2476
2477 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2478 len - (1 + 2 * ETH_ALEN + 2), 1,
2479 target_ap_addr, NULL, 0) < 0)
2480 return;
2481
2482 #ifdef CONFIG_SME
2483 {
2484 struct wpa_bss *bss;
2485 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2486 if (bss)
2487 wpa_s->sme.freq = bss->freq;
2488 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2489 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2490 WLAN_AUTH_FT);
2491 }
2492 #endif /* CONFIG_SME */
2493 }
2494 #endif /* CONFIG_IEEE80211R */
2495
2496
2497 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2498 struct unprot_deauth *e)
2499 {
2500 #ifdef CONFIG_IEEE80211W
2501 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2502 "dropped: " MACSTR " -> " MACSTR
2503 " (reason code %u)",
2504 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2505 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2506 #endif /* CONFIG_IEEE80211W */
2507 }
2508
2509
2510 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2511 struct unprot_disassoc *e)
2512 {
2513 #ifdef CONFIG_IEEE80211W
2514 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2515 "dropped: " MACSTR " -> " MACSTR
2516 " (reason code %u)",
2517 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2518 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2519 #endif /* CONFIG_IEEE80211W */
2520 }
2521
2522
2523 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2524 u16 reason_code, int locally_generated,
2525 const u8 *ie, size_t ie_len, int deauth)
2526 {
2527 #ifdef CONFIG_AP
2528 if (wpa_s->ap_iface && addr) {
2529 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2530 return;
2531 }
2532
2533 if (wpa_s->ap_iface) {
2534 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2535 return;
2536 }
2537 #endif /* CONFIG_AP */
2538
2539 wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2540
2541 if (reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2542 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2543 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2544 eapol_sm_failed(wpa_s->eapol)))
2545 wpas_auth_failed(wpa_s);
2546
2547 #ifdef CONFIG_P2P
2548 if (deauth && reason_code > 0) {
2549 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2550 locally_generated) > 0) {
2551 /*
2552 * The interface was removed, so cannot continue
2553 * processing any additional operations after this.
2554 */
2555 return;
2556 }
2557 }
2558 #endif /* CONFIG_P2P */
2559
2560 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2561 locally_generated);
2562 }
2563
2564
2565 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2566 struct disassoc_info *info)
2567 {
2568 u16 reason_code = 0;
2569 int locally_generated = 0;
2570 const u8 *addr = NULL;
2571 const u8 *ie = NULL;
2572 size_t ie_len = 0;
2573
2574 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2575
2576 if (info) {
2577 addr = info->addr;
2578 ie = info->ie;
2579 ie_len = info->ie_len;
2580 reason_code = info->reason_code;
2581 locally_generated = info->locally_generated;
2582 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2583 locally_generated ? " (locally generated)" : "");
2584 if (addr)
2585 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2586 MAC2STR(addr));
2587 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2588 ie, ie_len);
2589 }
2590
2591 #ifdef CONFIG_AP
2592 if (wpa_s->ap_iface && info && info->addr) {
2593 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2594 return;
2595 }
2596
2597 if (wpa_s->ap_iface) {
2598 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2599 return;
2600 }
2601 #endif /* CONFIG_AP */
2602
2603 #ifdef CONFIG_P2P
2604 if (info) {
2605 wpas_p2p_disassoc_notif(
2606 wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2607 locally_generated);
2608 }
2609 #endif /* CONFIG_P2P */
2610
2611 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2612 sme_event_disassoc(wpa_s, info);
2613
2614 wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2615 ie, ie_len, 0);
2616 }
2617
2618
2619 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2620 struct deauth_info *info)
2621 {
2622 u16 reason_code = 0;
2623 int locally_generated = 0;
2624 const u8 *addr = NULL;
2625 const u8 *ie = NULL;
2626 size_t ie_len = 0;
2627
2628 wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2629
2630 if (info) {
2631 addr = info->addr;
2632 ie = info->ie;
2633 ie_len = info->ie_len;
2634 reason_code = info->reason_code;
2635 locally_generated = info->locally_generated;
2636 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2637 reason_code,
2638 locally_generated ? " (locally generated)" : "");
2639 if (addr) {
2640 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2641 MAC2STR(addr));
2642 }
2643 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2644 ie, ie_len);
2645 }
2646
2647 wpa_reset_ft_completed(wpa_s->wpa);
2648
2649 wpas_event_disconnect(wpa_s, addr, reason_code,
2650 locally_generated, ie, ie_len, 1);
2651 }
2652
2653
2654 static void wpa_supplicant_update_channel_list(struct wpa_supplicant *wpa_s)
2655 {
2656 struct wpa_supplicant *ifs;
2657
2658 if (wpa_s->drv_priv == NULL)
2659 return; /* Ignore event during drv initialization */
2660
2661 free_hw_features(wpa_s);
2662 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2663 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2664
2665 #ifdef CONFIG_P2P
2666 wpas_p2p_update_channel_list(wpa_s);
2667 #endif /* CONFIG_P2P */
2668
2669 /*
2670 * Check other interfaces to see if they share the same radio. If
2671 * so, they get updated with this same hw mode info.
2672 */
2673 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2674 radio_list) {
2675 if (ifs != wpa_s) {
2676 wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2677 ifs->ifname);
2678 free_hw_features(ifs);
2679 ifs->hw.modes = wpa_drv_get_hw_feature_data(
2680 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2681 }
2682 }
2683 }
2684
2685
2686 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2687 union wpa_event_data *data)
2688 {
2689 struct wpa_supplicant *wpa_s = ctx;
2690
2691 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2692 event != EVENT_INTERFACE_ENABLED &&
2693 event != EVENT_INTERFACE_STATUS &&
2694 event != EVENT_SCHED_SCAN_STOPPED) {
2695 wpa_dbg(wpa_s, MSG_DEBUG,
2696 "Ignore event %s (%d) while interface is disabled",
2697 event_to_string(event), event);
2698 return;
2699 }
2700
2701 #ifndef CONFIG_NO_STDOUT_DEBUG
2702 {
2703 int level = MSG_DEBUG;
2704
2705 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2706 const struct ieee80211_hdr *hdr;
2707 u16 fc;
2708 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2709 fc = le_to_host16(hdr->frame_control);
2710 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2711 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2712 level = MSG_EXCESSIVE;
2713 }
2714
2715 wpa_dbg(wpa_s, level, "Event %s (%d) received",
2716 event_to_string(event), event);
2717 }
2718 #endif /* CONFIG_NO_STDOUT_DEBUG */
2719
2720 switch (event) {
2721 case EVENT_AUTH:
2722 sme_event_auth(wpa_s, data);
2723 break;
2724 case EVENT_ASSOC:
2725 wpa_supplicant_event_assoc(wpa_s, data);
2726 break;
2727 case EVENT_DISASSOC:
2728 wpas_event_disassoc(wpa_s,
2729 data ? &data->disassoc_info : NULL);
2730 break;
2731 case EVENT_DEAUTH:
2732 wpas_event_deauth(wpa_s,
2733 data ? &data->deauth_info : NULL);
2734 break;
2735 case EVENT_MICHAEL_MIC_FAILURE:
2736 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2737 break;
2738 #ifndef CONFIG_NO_SCAN_PROCESSING
2739 case EVENT_SCAN_RESULTS:
2740 wpa_supplicant_event_scan_results(wpa_s, data);
2741 if (wpa_s->wpa_state != WPA_AUTHENTICATING &&
2742 wpa_s->wpa_state != WPA_ASSOCIATING)
2743 wpas_p2p_continue_after_scan(wpa_s);
2744 break;
2745 #endif /* CONFIG_NO_SCAN_PROCESSING */
2746 case EVENT_ASSOCINFO:
2747 wpa_supplicant_event_associnfo(wpa_s, data);
2748 break;
2749 case EVENT_INTERFACE_STATUS:
2750 wpa_supplicant_event_interface_status(wpa_s, data);
2751 break;
2752 case EVENT_PMKID_CANDIDATE:
2753 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2754 break;
2755 #ifdef CONFIG_PEERKEY
2756 case EVENT_STKSTART:
2757 wpa_supplicant_event_stkstart(wpa_s, data);
2758 break;
2759 #endif /* CONFIG_PEERKEY */
2760 #ifdef CONFIG_TDLS
2761 case EVENT_TDLS:
2762 wpa_supplicant_event_tdls(wpa_s, data);
2763 break;
2764 #endif /* CONFIG_TDLS */
2765 #ifdef CONFIG_WNM
2766 case EVENT_WNM:
2767 wpa_supplicant_event_wnm(wpa_s, data);
2768 break;
2769 #endif /* CONFIG_WNM */
2770 #ifdef CONFIG_IEEE80211R
2771 case EVENT_FT_RESPONSE:
2772 wpa_supplicant_event_ft_response(wpa_s, data);
2773 break;
2774 #endif /* CONFIG_IEEE80211R */
2775 #ifdef CONFIG_IBSS_RSN
2776 case EVENT_IBSS_RSN_START:
2777 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2778 break;
2779 #endif /* CONFIG_IBSS_RSN */
2780 case EVENT_ASSOC_REJECT:
2781 if (data->assoc_reject.bssid)
2782 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2783 "bssid=" MACSTR " status_code=%u",
2784 MAC2STR(data->assoc_reject.bssid),
2785 data->assoc_reject.status_code);
2786 else
2787 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2788 "status_code=%u",
2789 data->assoc_reject.status_code);
2790 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2791 sme_event_assoc_reject(wpa_s, data);
2792 else {
2793 const u8 *bssid = data->assoc_reject.bssid;
2794 if (bssid == NULL || is_zero_ether_addr(bssid))
2795 bssid = wpa_s->pending_bssid;
2796 wpas_connection_failed(wpa_s, bssid);
2797 wpa_supplicant_mark_disassoc(wpa_s);
2798 }
2799 break;
2800 case EVENT_AUTH_TIMED_OUT:
2801 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2802 sme_event_auth_timed_out(wpa_s, data);
2803 break;
2804 case EVENT_ASSOC_TIMED_OUT:
2805 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2806 sme_event_assoc_timed_out(wpa_s, data);
2807 break;
2808 case EVENT_TX_STATUS:
2809 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2810 " type=%d stype=%d",
2811 MAC2STR(data->tx_status.dst),
2812 data->tx_status.type, data->tx_status.stype);
2813 #ifdef CONFIG_AP
2814 if (wpa_s->ap_iface == NULL) {
2815 #ifdef CONFIG_OFFCHANNEL
2816 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2817 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2818 offchannel_send_action_tx_status(
2819 wpa_s, data->tx_status.dst,
2820 data->tx_status.data,
2821 data->tx_status.data_len,
2822 data->tx_status.ack ?
2823 OFFCHANNEL_SEND_ACTION_SUCCESS :
2824 OFFCHANNEL_SEND_ACTION_NO_ACK);
2825 #endif /* CONFIG_OFFCHANNEL */
2826 break;
2827 }
2828 #endif /* CONFIG_AP */
2829 #ifdef CONFIG_OFFCHANNEL
2830 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2831 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2832 /*
2833 * Catch TX status events for Action frames we sent via group
2834 * interface in GO mode.
2835 */
2836 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2837 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2838 os_memcmp(wpa_s->parent->pending_action_dst,
2839 data->tx_status.dst, ETH_ALEN) == 0) {
2840 offchannel_send_action_tx_status(
2841 wpa_s->parent, data->tx_status.dst,
2842 data->tx_status.data,
2843 data->tx_status.data_len,
2844 data->tx_status.ack ?
2845 OFFCHANNEL_SEND_ACTION_SUCCESS :
2846 OFFCHANNEL_SEND_ACTION_NO_ACK);
2847 break;
2848 }
2849 #endif /* CONFIG_OFFCHANNEL */
2850 #ifdef CONFIG_AP
2851 switch (data->tx_status.type) {
2852 case WLAN_FC_TYPE_MGMT:
2853 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2854 data->tx_status.data_len,
2855 data->tx_status.stype,
2856 data->tx_status.ack);
2857 break;
2858 case WLAN_FC_TYPE_DATA:
2859 ap_tx_status(wpa_s, data->tx_status.dst,
2860 data->tx_status.data,
2861 data->tx_status.data_len,
2862 data->tx_status.ack);
2863 break;
2864 }
2865 #endif /* CONFIG_AP */
2866 break;
2867 #ifdef CONFIG_AP
2868 case EVENT_EAPOL_TX_STATUS:
2869 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
2870 data->eapol_tx_status.data,
2871 data->eapol_tx_status.data_len,
2872 data->eapol_tx_status.ack);
2873 break;
2874 case EVENT_DRIVER_CLIENT_POLL_OK:
2875 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2876 break;
2877 case EVENT_RX_FROM_UNKNOWN:
2878 if (wpa_s->ap_iface == NULL)
2879 break;
2880 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2881 data->rx_from_unknown.wds);
2882 break;
2883 case EVENT_CH_SWITCH:
2884 if (!data)
2885 break;
2886 if (!wpa_s->ap_iface) {
2887 wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
2888 "event in non-AP mode");
2889 break;
2890 }
2891
2892 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
2893 data->ch_switch.ht_enabled,
2894 data->ch_switch.ch_offset,
2895 data->ch_switch.ch_width,
2896 data->ch_switch.cf1,
2897 data->ch_switch.cf2);
2898 break;
2899 #endif /* CONFIG_AP */
2900 #if defined(CONFIG_AP) || defined(CONFIG_IBSS_RSN)
2901 case EVENT_RX_MGMT: {
2902 u16 fc, stype;
2903 const struct ieee80211_mgmt *mgmt;
2904
2905 mgmt = (const struct ieee80211_mgmt *)
2906 data->rx_mgmt.frame;
2907 fc = le_to_host16(mgmt->frame_control);
2908 stype = WLAN_FC_GET_STYPE(fc);
2909
2910 #ifdef CONFIG_AP
2911 if (wpa_s->ap_iface == NULL) {
2912 #endif /* CONFIG_AP */
2913 #ifdef CONFIG_P2P
2914 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2915 data->rx_mgmt.frame_len > 24) {
2916 const u8 *src = mgmt->sa;
2917 const u8 *ie = mgmt->u.probe_req.variable;
2918 size_t ie_len = data->rx_mgmt.frame_len -
2919 (mgmt->u.probe_req.variable -
2920 data->rx_mgmt.frame);
2921 wpas_p2p_probe_req_rx(
2922 wpa_s, src, mgmt->da,
2923 mgmt->bssid, ie, ie_len,
2924 data->rx_mgmt.ssi_signal);
2925 break;
2926 }
2927 #endif /* CONFIG_P2P */
2928 #ifdef CONFIG_IBSS_RSN
2929 if (stype == WLAN_FC_STYPE_AUTH &&
2930 data->rx_mgmt.frame_len >= 30) {
2931 wpa_supplicant_event_ibss_auth(wpa_s, data);
2932 break;
2933 }
2934 #endif /* CONFIG_IBSS_RSN */
2935 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2936 "management frame in non-AP mode");
2937 break;
2938 #ifdef CONFIG_AP
2939 }
2940
2941 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2942 data->rx_mgmt.frame_len > 24) {
2943 const u8 *ie = mgmt->u.probe_req.variable;
2944 size_t ie_len = data->rx_mgmt.frame_len -
2945 (mgmt->u.probe_req.variable -
2946 data->rx_mgmt.frame);
2947
2948 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
2949 mgmt->bssid, ie, ie_len,
2950 data->rx_mgmt.ssi_signal);
2951 }
2952
2953 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2954 #endif /* CONFIG_AP */
2955 break;
2956 }
2957 #endif /* CONFIG_AP || CONFIG_IBSS_RSN */
2958 case EVENT_RX_ACTION:
2959 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2960 " Category=%u DataLen=%d freq=%d MHz",
2961 MAC2STR(data->rx_action.sa),
2962 data->rx_action.category, (int) data->rx_action.len,
2963 data->rx_action.freq);
2964 #ifdef CONFIG_IEEE80211R
2965 if (data->rx_action.category == WLAN_ACTION_FT) {
2966 ft_rx_action(wpa_s, data->rx_action.data,
2967 data->rx_action.len);
2968 break;
2969 }
2970 #endif /* CONFIG_IEEE80211R */
2971 #ifdef CONFIG_IEEE80211W
2972 #ifdef CONFIG_SME
2973 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2974 sme_sa_query_rx(wpa_s, data->rx_action.sa,
2975 data->rx_action.data,
2976 data->rx_action.len);
2977 break;
2978 }
2979 #endif /* CONFIG_SME */
2980 #endif /* CONFIG_IEEE80211W */
2981 #ifdef CONFIG_WNM
2982 if (data->rx_action.category == WLAN_ACTION_WNM) {
2983 ieee802_11_rx_wnm_action(wpa_s, &data->rx_action);
2984 break;
2985 }
2986 #endif /* CONFIG_WNM */
2987 #ifdef CONFIG_GAS
2988 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2989 gas_query_rx(wpa_s->gas, data->rx_action.da,
2990 data->rx_action.sa, data->rx_action.bssid,
2991 data->rx_action.data, data->rx_action.len,
2992 data->rx_action.freq) == 0)
2993 break;
2994 #endif /* CONFIG_GAS */
2995 #ifdef CONFIG_TDLS
2996 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2997 data->rx_action.len >= 4 &&
2998 data->rx_action.data[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2999 wpa_dbg(wpa_s, MSG_DEBUG, "TDLS: Received Discovery "
3000 "Response from " MACSTR,
3001 MAC2STR(data->rx_action.sa));
3002 break;
3003 }
3004 #endif /* CONFIG_TDLS */
3005 #ifdef CONFIG_INTERWORKING
3006 if (data->rx_action.category == WLAN_ACTION_QOS &&
3007 data->rx_action.len >= 1 &&
3008 data->rx_action.data[0] == QOS_QOS_MAP_CONFIG) {
3009 const u8 *pos = data->rx_action.data + 1;
3010 size_t len = data->rx_action.len - 1;
3011 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
3012 MACSTR, MAC2STR(data->rx_action.sa));
3013 if (os_memcmp(data->rx_action.sa, wpa_s->bssid,
3014 ETH_ALEN) == 0 &&
3015 len > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
3016 pos[1] <= len - 2 && pos[1] >= 16)
3017 wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
3018 break;
3019 }
3020 #endif /* CONFIG_INTERWORKING */
3021 #ifdef CONFIG_P2P
3022 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
3023 data->rx_action.sa,
3024 data->rx_action.bssid,
3025 data->rx_action.category,
3026 data->rx_action.data,
3027 data->rx_action.len, data->rx_action.freq);
3028 #endif /* CONFIG_P2P */
3029 break;
3030 case EVENT_RX_PROBE_REQ:
3031 if (data->rx_probe_req.sa == NULL ||
3032 data->rx_probe_req.ie == NULL)
3033 break;
3034 #ifdef CONFIG_AP
3035 if (wpa_s->ap_iface) {
3036 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3037 data->rx_probe_req.sa,
3038 data->rx_probe_req.da,
3039 data->rx_probe_req.bssid,
3040 data->rx_probe_req.ie,
3041 data->rx_probe_req.ie_len,
3042 data->rx_probe_req.ssi_signal);
3043 break;
3044 }
3045 #endif /* CONFIG_AP */
3046 #ifdef CONFIG_P2P
3047 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3048 data->rx_probe_req.da,
3049 data->rx_probe_req.bssid,
3050 data->rx_probe_req.ie,
3051 data->rx_probe_req.ie_len,
3052 data->rx_probe_req.ssi_signal);
3053 #endif /* CONFIG_P2P */
3054 break;
3055 case EVENT_REMAIN_ON_CHANNEL:
3056 #ifdef CONFIG_OFFCHANNEL
3057 offchannel_remain_on_channel_cb(
3058 wpa_s, data->remain_on_channel.freq,
3059 data->remain_on_channel.duration);
3060 #endif /* CONFIG_OFFCHANNEL */
3061 #ifdef CONFIG_P2P
3062 wpas_p2p_remain_on_channel_cb(
3063 wpa_s, data->remain_on_channel.freq,
3064 data->remain_on_channel.duration);
3065 #endif /* CONFIG_P2P */
3066 break;
3067 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3068 #ifdef CONFIG_OFFCHANNEL
3069 offchannel_cancel_remain_on_channel_cb(
3070 wpa_s, data->remain_on_channel.freq);
3071 #endif /* CONFIG_OFFCHANNEL */
3072 #ifdef CONFIG_P2P
3073 wpas_p2p_cancel_remain_on_channel_cb(
3074 wpa_s, data->remain_on_channel.freq);
3075 #endif /* CONFIG_P2P */
3076 break;
3077 #ifdef CONFIG_P2P
3078 case EVENT_P2P_DEV_FOUND: {
3079 struct p2p_peer_info peer_info;
3080
3081 os_memset(&peer_info, 0, sizeof(peer_info));
3082 if (data->p2p_dev_found.dev_addr)
3083 os_memcpy(peer_info.p2p_device_addr,
3084 data->p2p_dev_found.dev_addr, ETH_ALEN);
3085 if (data->p2p_dev_found.pri_dev_type)
3086 os_memcpy(peer_info.pri_dev_type,
3087 data->p2p_dev_found.pri_dev_type,
3088 sizeof(peer_info.pri_dev_type));
3089 if (data->p2p_dev_found.dev_name)
3090 os_strlcpy(peer_info.device_name,
3091 data->p2p_dev_found.dev_name,
3092 sizeof(peer_info.device_name));
3093 peer_info.config_methods = data->p2p_dev_found.config_methods;
3094 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
3095 peer_info.group_capab = data->p2p_dev_found.group_capab;
3096
3097 /*
3098 * FIX: new_device=1 is not necessarily correct. We should
3099 * maintain a P2P peer database in wpa_supplicant and update
3100 * this information based on whether the peer is truly new.
3101 */
3102 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
3103 break;
3104 }
3105 case EVENT_P2P_GO_NEG_REQ_RX:
3106 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
3107 data->p2p_go_neg_req_rx.dev_passwd_id);
3108 break;
3109 case EVENT_P2P_GO_NEG_COMPLETED:
3110 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
3111 break;
3112 case EVENT_P2P_PROV_DISC_REQUEST:
3113 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
3114 data->p2p_prov_disc_req.config_methods,
3115 data->p2p_prov_disc_req.dev_addr,
3116 data->p2p_prov_disc_req.pri_dev_type,
3117 data->p2p_prov_disc_req.dev_name,
3118 data->p2p_prov_disc_req.supp_config_methods,
3119 data->p2p_prov_disc_req.dev_capab,
3120 data->p2p_prov_disc_req.group_capab,
3121 NULL, 0);
3122 break;
3123 case EVENT_P2P_PROV_DISC_RESPONSE:
3124 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
3125 data->p2p_prov_disc_resp.config_methods);
3126 break;
3127 case EVENT_P2P_SD_REQUEST:
3128 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
3129 data->p2p_sd_req.sa,
3130 data->p2p_sd_req.dialog_token,
3131 data->p2p_sd_req.update_indic,
3132 data->p2p_sd_req.tlvs,
3133 data->p2p_sd_req.tlvs_len);
3134 break;
3135 case EVENT_P2P_SD_RESPONSE:
3136 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
3137 data->p2p_sd_resp.update_indic,
3138 data->p2p_sd_resp.tlvs,
3139 data->p2p_sd_resp.tlvs_len);
3140 break;
3141 #endif /* CONFIG_P2P */
3142 case EVENT_EAPOL_RX:
3143 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3144 data->eapol_rx.data,
3145 data->eapol_rx.data_len);
3146 break;
3147 case EVENT_SIGNAL_CHANGE:
3148 bgscan_notify_signal_change(
3149 wpa_s, data->signal_change.above_threshold,
3150 data->signal_change.current_signal,
3151 data->signal_change.current_noise,
3152 data->signal_change.current_txrate);
3153 break;
3154 case EVENT_INTERFACE_ENABLED:
3155 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3156 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3157 wpa_supplicant_update_mac_addr(wpa_s);
3158 #ifdef CONFIG_AP
3159 if (!wpa_s->ap_iface) {
3160 wpa_supplicant_set_state(wpa_s,
3161 WPA_DISCONNECTED);
3162 wpa_supplicant_req_scan(wpa_s, 0, 0);
3163 } else
3164 wpa_supplicant_set_state(wpa_s,
3165 WPA_COMPLETED);
3166 #else /* CONFIG_AP */
3167 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3168 wpa_supplicant_req_scan(wpa_s, 0, 0);
3169 #endif /* CONFIG_AP */
3170 }
3171 break;
3172 case EVENT_INTERFACE_DISABLED:
3173 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3174 #ifdef CONFIG_P2P
3175 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3176 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3177 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3178 /*
3179 * The interface was externally disabled. Remove
3180 * it assuming an external entity will start a
3181 * new session if needed.
3182 */
3183 wpas_p2p_disconnect(wpa_s);
3184 break;
3185 }
3186 #endif /* CONFIG_P2P */
3187
3188 wpa_supplicant_mark_disassoc(wpa_s);
3189 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3190 break;
3191 case EVENT_CHANNEL_LIST_CHANGED:
3192 wpa_supplicant_update_channel_list(wpa_s);
3193 break;
3194 case EVENT_INTERFACE_UNAVAILABLE:
3195 #ifdef CONFIG_P2P
3196 wpas_p2p_interface_unavailable(wpa_s);
3197 #endif /* CONFIG_P2P */
3198 break;
3199 case EVENT_BEST_CHANNEL:
3200 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3201 "(%d %d %d)",
3202 data->best_chan.freq_24, data->best_chan.freq_5,
3203 data->best_chan.freq_overall);
3204 wpa_s->best_24_freq = data->best_chan.freq_24;
3205 wpa_s->best_5_freq = data->best_chan.freq_5;
3206 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3207 #ifdef CONFIG_P2P
3208 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3209 data->best_chan.freq_5,
3210 data->best_chan.freq_overall);
3211 #endif /* CONFIG_P2P */
3212 break;
3213 case EVENT_UNPROT_DEAUTH:
3214 wpa_supplicant_event_unprot_deauth(wpa_s,
3215 &data->unprot_deauth);
3216 break;
3217 case EVENT_UNPROT_DISASSOC:
3218 wpa_supplicant_event_unprot_disassoc(wpa_s,
3219 &data->unprot_disassoc);
3220 break;
3221 case EVENT_STATION_LOW_ACK:
3222 #ifdef CONFIG_AP
3223 if (wpa_s->ap_iface && data)
3224 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3225 data->low_ack.addr);
3226 #endif /* CONFIG_AP */
3227 #ifdef CONFIG_TDLS
3228 if (data)
3229 wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
3230 #endif /* CONFIG_TDLS */
3231 break;
3232 case EVENT_IBSS_PEER_LOST:
3233 #ifdef CONFIG_IBSS_RSN
3234 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3235 #endif /* CONFIG_IBSS_RSN */
3236 break;
3237 case EVENT_DRIVER_GTK_REKEY:
3238 if (os_memcmp(data->driver_gtk_rekey.bssid,
3239 wpa_s->bssid, ETH_ALEN))
3240 break;
3241 if (!wpa_s->wpa)
3242 break;
3243 wpa_sm_update_replay_ctr(wpa_s->wpa,
3244 data->driver_gtk_rekey.replay_ctr);
3245 break;
3246 case EVENT_SCHED_SCAN_STOPPED:
3247 wpa_s->sched_scanning = 0;
3248 wpa_supplicant_notify_scanning(wpa_s, 0);
3249
3250 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3251 break;
3252
3253 /*
3254 * If we timed out, start a new sched scan to continue
3255 * searching for more SSIDs.
3256 */
3257 if (wpa_s->sched_scan_timed_out)
3258 wpa_supplicant_req_sched_scan(wpa_s);
3259 break;
3260 case EVENT_WPS_BUTTON_PUSHED:
3261 #ifdef CONFIG_WPS
3262 wpas_wps_start_pbc(wpa_s, NULL, 0);
3263 #endif /* CONFIG_WPS */
3264 break;
3265 case EVENT_CONNECT_FAILED_REASON:
3266 #ifdef CONFIG_AP
3267 if (!wpa_s->ap_iface || !data)
3268 break;
3269 hostapd_event_connect_failed_reason(
3270 wpa_s->ap_iface->bss[0],
3271 data->connect_failed_reason.addr,
3272 data->connect_failed_reason.code);
3273 #endif /* CONFIG_AP */
3274 break;
3275 default:
3276 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3277 break;
3278 }
3279 }
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