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[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_time now;
57
58 if (ssid == NULL || ssid->disabled_until.sec == 0)
59 return 0;
60
61 os_get_time(&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((!sim && aka) ? SCARD_USIM_ONLY :
318 SCARD_TRY_BOTH, NULL);
319 if (wpa_s->scard == NULL) {
320 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
321 "(pcsc-lite)");
322 return -1;
323 }
324 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
325 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
326 #endif /* PCSC_FUNCS */
327 #endif /* IEEE8021X_EAPOL */
328
329 return 0;
330 }
331
332
333 #ifndef CONFIG_NO_SCAN_PROCESSING
334
335 static int has_wep_key(struct wpa_ssid *ssid)
336 {
337 int i;
338
339 for (i = 0; i < NUM_WEP_KEYS; i++) {
340 if (ssid->wep_key_len[i])
341 return 1;
342 }
343
344 return 0;
345 }
346
347
348 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
349 struct wpa_ssid *ssid)
350 {
351 int privacy = 0;
352
353 if (ssid->mixed_cell)
354 return 1;
355
356 #ifdef CONFIG_WPS
357 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
358 return 1;
359 #endif /* CONFIG_WPS */
360
361 if (has_wep_key(ssid))
362 privacy = 1;
363
364 #ifdef IEEE8021X_EAPOL
365 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
366 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
367 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
368 privacy = 1;
369 #endif /* IEEE8021X_EAPOL */
370
371 if (wpa_key_mgmt_wpa(ssid->key_mgmt))
372 privacy = 1;
373
374 if (bss->caps & IEEE80211_CAP_PRIVACY)
375 return privacy;
376 return !privacy;
377 }
378
379
380 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
381 struct wpa_ssid *ssid,
382 struct wpa_bss *bss)
383 {
384 struct wpa_ie_data ie;
385 int proto_match = 0;
386 const u8 *rsn_ie, *wpa_ie;
387 int ret;
388 int wep_ok;
389
390 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
391 if (ret >= 0)
392 return ret;
393
394 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
395 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
396 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
397 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
398 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
399
400 rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
401 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
402 proto_match++;
403
404 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
405 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
406 "failed");
407 break;
408 }
409
410 if (wep_ok &&
411 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
412 {
413 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
414 "in RSN IE");
415 return 1;
416 }
417
418 if (!(ie.proto & ssid->proto)) {
419 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
420 "mismatch");
421 break;
422 }
423
424 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
425 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
426 "cipher mismatch");
427 break;
428 }
429
430 if (!(ie.group_cipher & ssid->group_cipher)) {
431 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
432 "cipher mismatch");
433 break;
434 }
435
436 if (!(ie.key_mgmt & ssid->key_mgmt)) {
437 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
438 "mismatch");
439 break;
440 }
441
442 #ifdef CONFIG_IEEE80211W
443 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
444 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
445 wpa_s->conf->pmf : ssid->ieee80211w) ==
446 MGMT_FRAME_PROTECTION_REQUIRED) {
447 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
448 "frame protection");
449 break;
450 }
451 #endif /* CONFIG_IEEE80211W */
452
453 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
454 return 1;
455 }
456
457 wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
458 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
459 proto_match++;
460
461 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
462 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
463 "failed");
464 break;
465 }
466
467 if (wep_ok &&
468 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
469 {
470 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
471 "in WPA IE");
472 return 1;
473 }
474
475 if (!(ie.proto & ssid->proto)) {
476 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
477 "mismatch");
478 break;
479 }
480
481 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
482 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
483 "cipher mismatch");
484 break;
485 }
486
487 if (!(ie.group_cipher & ssid->group_cipher)) {
488 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
489 "cipher mismatch");
490 break;
491 }
492
493 if (!(ie.key_mgmt & ssid->key_mgmt)) {
494 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
495 "mismatch");
496 break;
497 }
498
499 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
500 return 1;
501 }
502
503 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
504 !rsn_ie) {
505 wpa_dbg(wpa_s, MSG_DEBUG, " allow for non-WPA IEEE 802.1X");
506 return 1;
507 }
508
509 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
510 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
511 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
512 return 0;
513 }
514
515 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
516 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
517 return 1;
518 }
519
520 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with "
521 "WPA/WPA2");
522
523 return 0;
524 }
525
526
527 static int freq_allowed(int *freqs, int freq)
528 {
529 int i;
530
531 if (freqs == NULL)
532 return 1;
533
534 for (i = 0; freqs[i]; i++)
535 if (freqs[i] == freq)
536 return 1;
537 return 0;
538 }
539
540
541 static int ht_supported(const struct hostapd_hw_modes *mode)
542 {
543 if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
544 /*
545 * The driver did not indicate whether it supports HT. Assume
546 * it does to avoid connection issues.
547 */
548 return 1;
549 }
550
551 /*
552 * IEEE Std 802.11n-2009 20.1.1:
553 * An HT non-AP STA shall support all EQM rates for one spatial stream.
554 */
555 return mode->mcs_set[0] == 0xff;
556 }
557
558
559 static int vht_supported(const struct hostapd_hw_modes *mode)
560 {
561 if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) {
562 /*
563 * The driver did not indicate whether it supports VHT. Assume
564 * it does to avoid connection issues.
565 */
566 return 1;
567 }
568
569 /*
570 * A VHT non-AP STA shall support MCS 0-7 for one spatial stream.
571 * TODO: Verify if this complies with the standard
572 */
573 return (mode->vht_mcs_set[0] & 0x3) != 3;
574 }
575
576
577 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
578 {
579 const struct hostapd_hw_modes *mode = NULL, *modes;
580 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
581 const u8 *rate_ie;
582 int i, j, k;
583
584 if (bss->freq == 0)
585 return 1; /* Cannot do matching without knowing band */
586
587 modes = wpa_s->hw.modes;
588 if (modes == NULL) {
589 /*
590 * The driver does not provide any additional information
591 * about the utilized hardware, so allow the connection attempt
592 * to continue.
593 */
594 return 1;
595 }
596
597 for (i = 0; i < wpa_s->hw.num_modes; i++) {
598 for (j = 0; j < modes[i].num_channels; j++) {
599 int freq = modes[i].channels[j].freq;
600 if (freq == bss->freq) {
601 if (mode &&
602 mode->mode == HOSTAPD_MODE_IEEE80211G)
603 break; /* do not allow 802.11b replace
604 * 802.11g */
605 mode = &modes[i];
606 break;
607 }
608 }
609 }
610
611 if (mode == NULL)
612 return 0;
613
614 for (i = 0; i < (int) sizeof(scan_ie); i++) {
615 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
616 if (rate_ie == NULL)
617 continue;
618
619 for (j = 2; j < rate_ie[1] + 2; j++) {
620 int flagged = !!(rate_ie[j] & 0x80);
621 int r = (rate_ie[j] & 0x7f) * 5;
622
623 /*
624 * IEEE Std 802.11n-2009 7.3.2.2:
625 * The new BSS Membership selector value is encoded
626 * like a legacy basic rate, but it is not a rate and
627 * only indicates if the BSS members are required to
628 * support the mandatory features of Clause 20 [HT PHY]
629 * in order to join the BSS.
630 */
631 if (flagged && ((rate_ie[j] & 0x7f) ==
632 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
633 if (!ht_supported(mode)) {
634 wpa_dbg(wpa_s, MSG_DEBUG,
635 " hardware does not support "
636 "HT PHY");
637 return 0;
638 }
639 continue;
640 }
641
642 /* There's also a VHT selector for 802.11ac */
643 if (flagged && ((rate_ie[j] & 0x7f) ==
644 BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
645 if (!vht_supported(mode)) {
646 wpa_dbg(wpa_s, MSG_DEBUG,
647 " hardware does not support "
648 "VHT PHY");
649 return 0;
650 }
651 continue;
652 }
653
654 if (!flagged)
655 continue;
656
657 /* check for legacy basic rates */
658 for (k = 0; k < mode->num_rates; k++) {
659 if (mode->rates[k] == r)
660 break;
661 }
662 if (k == mode->num_rates) {
663 /*
664 * IEEE Std 802.11-2007 7.3.2.2 demands that in
665 * order to join a BSS all required rates
666 * have to be supported by the hardware.
667 */
668 wpa_dbg(wpa_s, MSG_DEBUG, " hardware does "
669 "not support required rate %d.%d Mbps",
670 r / 10, r % 10);
671 return 0;
672 }
673 }
674 }
675
676 return 1;
677 }
678
679
680 static int bss_is_dmg(struct wpa_bss *bss)
681 {
682 return bss->freq > 45000;
683 }
684
685
686 /*
687 * Test whether BSS is in an ESS.
688 * This is done differently in DMG (60 GHz) and non-DMG bands
689 */
690 static int bss_is_ess(struct wpa_bss *bss)
691 {
692 if (bss_is_dmg(bss)) {
693 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
694 IEEE80211_CAP_DMG_AP;
695 }
696
697 return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
698 IEEE80211_CAP_ESS);
699 }
700
701
702 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
703 int i, struct wpa_bss *bss,
704 struct wpa_ssid *group)
705 {
706 u8 wpa_ie_len, rsn_ie_len;
707 int wpa;
708 struct wpa_blacklist *e;
709 const u8 *ie;
710 struct wpa_ssid *ssid;
711
712 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
713 wpa_ie_len = ie ? ie[1] : 0;
714
715 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
716 rsn_ie_len = ie ? ie[1] : 0;
717
718 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
719 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s",
720 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
721 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
722 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
723 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
724 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
725 " p2p" : "");
726
727 e = wpa_blacklist_get(wpa_s, bss->bssid);
728 if (e) {
729 int limit = 1;
730 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
731 /*
732 * When only a single network is enabled, we can
733 * trigger blacklisting on the first failure. This
734 * should not be done with multiple enabled networks to
735 * avoid getting forced to move into a worse ESS on
736 * single error if there are no other BSSes of the
737 * current ESS.
738 */
739 limit = 0;
740 }
741 if (e->count > limit) {
742 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
743 "(count=%d limit=%d)", e->count, limit);
744 return NULL;
745 }
746 }
747
748 if (bss->ssid_len == 0) {
749 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
750 return NULL;
751 }
752
753 if (disallowed_bssid(wpa_s, bss->bssid)) {
754 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed");
755 return NULL;
756 }
757
758 if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
759 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed");
760 return NULL;
761 }
762
763 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
764
765 for (ssid = group; ssid; ssid = ssid->pnext) {
766 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
767 int res;
768
769 if (wpas_network_disabled(wpa_s, ssid)) {
770 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
771 continue;
772 }
773
774 res = wpas_temp_disabled(wpa_s, ssid);
775 if (res > 0) {
776 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled "
777 "temporarily for %d second(s)", res);
778 continue;
779 }
780
781 #ifdef CONFIG_WPS
782 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
783 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
784 "(WPS)");
785 continue;
786 }
787
788 if (wpa && ssid->ssid_len == 0 &&
789 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
790 check_ssid = 0;
791
792 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
793 /* Only allow wildcard SSID match if an AP
794 * advertises active WPS operation that matches
795 * with our mode. */
796 check_ssid = 1;
797 if (ssid->ssid_len == 0 &&
798 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
799 check_ssid = 0;
800 }
801 #endif /* CONFIG_WPS */
802
803 if (ssid->bssid_set && ssid->ssid_len == 0 &&
804 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
805 check_ssid = 0;
806
807 if (check_ssid &&
808 (bss->ssid_len != ssid->ssid_len ||
809 os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
810 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
811 continue;
812 }
813
814 if (ssid->bssid_set &&
815 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
816 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
817 continue;
818 }
819
820 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
821 continue;
822
823 if (!wpa &&
824 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
825 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
826 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
827 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
828 "not allowed");
829 continue;
830 }
831
832 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
833 has_wep_key(ssid)) {
834 wpa_dbg(wpa_s, MSG_DEBUG, " skip - ignore WPA/WPA2 AP for WEP network block");
835 continue;
836 }
837
838 if (!wpa_supplicant_match_privacy(bss, ssid)) {
839 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
840 "mismatch");
841 continue;
842 }
843
844 if (!bss_is_ess(bss)) {
845 wpa_dbg(wpa_s, MSG_DEBUG, " skip - not ESS network");
846 continue;
847 }
848
849 if (!freq_allowed(ssid->freq_list, bss->freq)) {
850 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
851 "allowed");
852 continue;
853 }
854
855 if (!rate_match(wpa_s, bss)) {
856 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do "
857 "not match");
858 continue;
859 }
860
861 #ifdef CONFIG_P2P
862 if (ssid->p2p_group &&
863 !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
864 !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
865 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P IE seen");
866 continue;
867 }
868
869 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
870 struct wpabuf *p2p_ie;
871 u8 dev_addr[ETH_ALEN];
872
873 ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
874 if (ie == NULL) {
875 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P element");
876 continue;
877 }
878 p2p_ie = wpa_bss_get_vendor_ie_multi(
879 bss, P2P_IE_VENDOR_TYPE);
880 if (p2p_ie == NULL) {
881 wpa_dbg(wpa_s, MSG_DEBUG, " skip - could not fetch P2P element");
882 continue;
883 }
884
885 if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
886 || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
887 ETH_ALEN) != 0) {
888 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no matching GO P2P Device Address in P2P element");
889 wpabuf_free(p2p_ie);
890 continue;
891 }
892 wpabuf_free(p2p_ie);
893 }
894
895 /*
896 * TODO: skip the AP if its P2P IE has Group Formation
897 * bit set in the P2P Group Capability Bitmap and we
898 * are not in Group Formation with that device.
899 */
900 #endif /* CONFIG_P2P */
901
902 /* Matching configuration found */
903 return ssid;
904 }
905
906 /* No matching configuration found */
907 return NULL;
908 }
909
910
911 static struct wpa_bss *
912 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
913 struct wpa_ssid *group,
914 struct wpa_ssid **selected_ssid)
915 {
916 unsigned int i;
917
918 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
919 group->priority);
920
921 for (i = 0; i < wpa_s->last_scan_res_used; i++) {
922 struct wpa_bss *bss = wpa_s->last_scan_res[i];
923 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
924 if (!*selected_ssid)
925 continue;
926 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
927 " ssid='%s'",
928 MAC2STR(bss->bssid),
929 wpa_ssid_txt(bss->ssid, bss->ssid_len));
930 return bss;
931 }
932
933 return NULL;
934 }
935
936
937 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
938 struct wpa_ssid **selected_ssid)
939 {
940 struct wpa_bss *selected = NULL;
941 int prio;
942
943 if (wpa_s->last_scan_res == NULL ||
944 wpa_s->last_scan_res_used == 0)
945 return NULL; /* no scan results from last update */
946
947 while (selected == NULL) {
948 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
949 selected = wpa_supplicant_select_bss(
950 wpa_s, wpa_s->conf->pssid[prio],
951 selected_ssid);
952 if (selected)
953 break;
954 }
955
956 if (selected == NULL && wpa_s->blacklist &&
957 !wpa_s->countermeasures) {
958 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
959 "blacklist and try again");
960 wpa_blacklist_clear(wpa_s);
961 wpa_s->blacklist_cleared++;
962 } else if (selected == NULL)
963 break;
964 }
965
966 return selected;
967 }
968
969
970 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
971 int timeout_sec, int timeout_usec)
972 {
973 if (!wpa_supplicant_enabled_networks(wpa_s)) {
974 /*
975 * No networks are enabled; short-circuit request so
976 * we don't wait timeout seconds before transitioning
977 * to INACTIVE state.
978 */
979 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
980 "since there are no enabled networks");
981 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
982 #ifdef CONFIG_P2P
983 wpa_s->sta_scan_pending = 0;
984 #endif /* CONFIG_P2P */
985 return;
986 }
987
988 wpa_s->scan_for_connection = 1;
989 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
990 }
991
992
993 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
994 struct wpa_bss *selected,
995 struct wpa_ssid *ssid)
996 {
997 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
998 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
999 "PBC session overlap");
1000 #ifdef CONFIG_P2P
1001 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
1002 return -1;
1003 #endif /* CONFIG_P2P */
1004
1005 #ifdef CONFIG_WPS
1006 wpas_wps_cancel(wpa_s);
1007 #endif /* CONFIG_WPS */
1008 return -1;
1009 }
1010
1011 wpa_msg(wpa_s, MSG_DEBUG,
1012 "Considering connect request: reassociate: %d selected: "
1013 MACSTR " bssid: " MACSTR " pending: " MACSTR
1014 " wpa_state: %s ssid=%p current_ssid=%p",
1015 wpa_s->reassociate, MAC2STR(selected->bssid),
1016 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1017 wpa_supplicant_state_txt(wpa_s->wpa_state),
1018 ssid, wpa_s->current_ssid);
1019
1020 /*
1021 * Do not trigger new association unless the BSSID has changed or if
1022 * reassociation is requested. If we are in process of associating with
1023 * the selected BSSID, do not trigger new attempt.
1024 */
1025 if (wpa_s->reassociate ||
1026 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1027 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1028 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1029 (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1030 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1031 0) ||
1032 (is_zero_ether_addr(wpa_s->pending_bssid) &&
1033 ssid != wpa_s->current_ssid)))) {
1034 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1035 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1036 return 0;
1037 }
1038 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1039 MAC2STR(selected->bssid));
1040 wpa_supplicant_associate(wpa_s, selected, ssid);
1041 } else {
1042 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1043 "connect with the selected AP");
1044 }
1045
1046 return 0;
1047 }
1048
1049
1050 static struct wpa_ssid *
1051 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1052 {
1053 int prio;
1054 struct wpa_ssid *ssid;
1055
1056 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1057 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1058 {
1059 if (wpas_network_disabled(wpa_s, ssid))
1060 continue;
1061 if (ssid->mode == IEEE80211_MODE_IBSS ||
1062 ssid->mode == IEEE80211_MODE_AP)
1063 return ssid;
1064 }
1065 }
1066 return NULL;
1067 }
1068
1069
1070 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1071 * on BSS added and BSS changed events */
1072 static void wpa_supplicant_rsn_preauth_scan_results(
1073 struct wpa_supplicant *wpa_s)
1074 {
1075 struct wpa_bss *bss;
1076
1077 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1078 return;
1079
1080 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1081 const u8 *ssid, *rsn;
1082
1083 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1084 if (ssid == NULL)
1085 continue;
1086
1087 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1088 if (rsn == NULL)
1089 continue;
1090
1091 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1092 }
1093
1094 }
1095
1096
1097 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1098 struct wpa_bss *selected,
1099 struct wpa_ssid *ssid)
1100 {
1101 struct wpa_bss *current_bss = NULL;
1102 int min_diff;
1103
1104 if (wpa_s->reassociate)
1105 return 1; /* explicit request to reassociate */
1106 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1107 return 1; /* we are not associated; continue */
1108 if (wpa_s->current_ssid == NULL)
1109 return 1; /* unknown current SSID */
1110 if (wpa_s->current_ssid != ssid)
1111 return 1; /* different network block */
1112
1113 if (wpas_driver_bss_selection(wpa_s))
1114 return 0; /* Driver-based roaming */
1115
1116 if (wpa_s->current_ssid->ssid)
1117 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1118 wpa_s->current_ssid->ssid,
1119 wpa_s->current_ssid->ssid_len);
1120 if (!current_bss)
1121 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1122
1123 if (!current_bss)
1124 return 1; /* current BSS not seen in scan results */
1125
1126 if (current_bss == selected)
1127 return 0;
1128
1129 if (selected->last_update_idx > current_bss->last_update_idx)
1130 return 1; /* current BSS not seen in the last scan */
1131
1132 #ifndef CONFIG_NO_ROAMING
1133 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1134 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1135 MAC2STR(current_bss->bssid), current_bss->level);
1136 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1137 MAC2STR(selected->bssid), selected->level);
1138
1139 if (wpa_s->current_ssid->bssid_set &&
1140 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1141 0) {
1142 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1143 "has preferred BSSID");
1144 return 1;
1145 }
1146
1147 if (current_bss->level < 0 && current_bss->level > selected->level) {
1148 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1149 "signal level");
1150 return 0;
1151 }
1152
1153 min_diff = 2;
1154 if (current_bss->level < 0) {
1155 if (current_bss->level < -85)
1156 min_diff = 1;
1157 else if (current_bss->level < -80)
1158 min_diff = 2;
1159 else if (current_bss->level < -75)
1160 min_diff = 3;
1161 else if (current_bss->level < -70)
1162 min_diff = 4;
1163 else
1164 min_diff = 5;
1165 }
1166 if (abs(current_bss->level - selected->level) < min_diff) {
1167 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1168 "in signal level");
1169 return 0;
1170 }
1171
1172 return 1;
1173 #else /* CONFIG_NO_ROAMING */
1174 return 0;
1175 #endif /* CONFIG_NO_ROAMING */
1176 }
1177
1178
1179 /* Return != 0 if no scan results could be fetched or if scan results should not
1180 * be shared with other virtual interfaces. */
1181 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1182 union wpa_event_data *data,
1183 int own_request)
1184 {
1185 struct wpa_scan_results *scan_res;
1186 int ap = 0;
1187 #ifndef CONFIG_NO_RANDOM_POOL
1188 size_t i, num;
1189 #endif /* CONFIG_NO_RANDOM_POOL */
1190
1191 #ifdef CONFIG_AP
1192 if (wpa_s->ap_iface)
1193 ap = 1;
1194 #endif /* CONFIG_AP */
1195
1196 wpa_supplicant_notify_scanning(wpa_s, 0);
1197
1198 #ifdef CONFIG_P2P
1199 if (own_request && wpa_s->global->p2p_cb_on_scan_complete &&
1200 !wpa_s->global->p2p_disabled &&
1201 wpa_s->global->p2p != NULL && !wpa_s->sta_scan_pending &&
1202 !wpa_s->scan_res_handler) {
1203 wpa_s->global->p2p_cb_on_scan_complete = 0;
1204 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
1205 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
1206 "stopped scan processing");
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 /*
1359 * Use shorter wait during P2P Provisioning
1360 * state to speed up group formation.
1361 */
1362 timeout_sec = 0;
1363 timeout_usec = 250000;
1364 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1365 timeout_usec);
1366 return 0;
1367 }
1368 #endif /* CONFIG_P2P */
1369 #ifdef CONFIG_INTERWORKING
1370 if (wpa_s->conf->auto_interworking &&
1371 wpa_s->conf->interworking &&
1372 wpa_s->conf->cred) {
1373 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1374 "start ANQP fetch since no matching "
1375 "networks found");
1376 wpa_s->network_select = 1;
1377 wpa_s->auto_network_select = 1;
1378 interworking_start_fetch_anqp(wpa_s);
1379 return 1;
1380 }
1381 #endif /* CONFIG_INTERWORKING */
1382 if (wpa_supplicant_req_sched_scan(wpa_s))
1383 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1384 timeout_usec);
1385 }
1386 }
1387 return 0;
1388 }
1389
1390
1391 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1392 union wpa_event_data *data)
1393 {
1394 const char *rn, *rn2;
1395 struct wpa_supplicant *ifs;
1396
1397 if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1398 /*
1399 * If no scan results could be fetched, then no need to
1400 * notify those interfaces that did not actually request
1401 * this scan. Similarly, if scan results started a new operation on this
1402 * interface, do not notify other interfaces to avoid concurrent
1403 * operations during a connection attempt.
1404 */
1405 return;
1406 }
1407
1408 /*
1409 * Check other interfaces to see if they have the same radio-name. If
1410 * so, they get updated with this same scan info.
1411 */
1412 if (!wpa_s->driver->get_radio_name)
1413 return;
1414
1415 rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1416 if (rn == NULL || rn[0] == '\0')
1417 return;
1418
1419 wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1420 "sharing same radio (%s) in event_scan_results", rn);
1421
1422 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1423 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1424 continue;
1425
1426 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1427 if (rn2 && os_strcmp(rn, rn2) == 0) {
1428 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1429 "sibling", ifs->ifname);
1430 _wpa_supplicant_event_scan_results(ifs, data, 0);
1431 }
1432 }
1433 }
1434
1435 #endif /* CONFIG_NO_SCAN_PROCESSING */
1436
1437
1438 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1439 {
1440 #ifdef CONFIG_NO_SCAN_PROCESSING
1441 return -1;
1442 #else /* CONFIG_NO_SCAN_PROCESSING */
1443 struct os_time now;
1444
1445 if (wpa_s->last_scan_res_used <= 0)
1446 return -1;
1447
1448 os_get_time(&now);
1449 if (now.sec - wpa_s->last_scan.sec > 5) {
1450 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1451 return -1;
1452 }
1453
1454 return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1455 #endif /* CONFIG_NO_SCAN_PROCESSING */
1456 }
1457
1458 #ifdef CONFIG_WNM
1459
1460 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1461 {
1462 struct wpa_supplicant *wpa_s = eloop_ctx;
1463
1464 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1465 return;
1466
1467 if (!wpa_s->no_keep_alive) {
1468 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1469 MAC2STR(wpa_s->bssid));
1470 /* TODO: could skip this if normal data traffic has been sent */
1471 /* TODO: Consider using some more appropriate data frame for
1472 * this */
1473 if (wpa_s->l2)
1474 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1475 (u8 *) "", 0);
1476 }
1477
1478 #ifdef CONFIG_SME
1479 if (wpa_s->sme.bss_max_idle_period) {
1480 unsigned int msec;
1481 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1482 if (msec > 100)
1483 msec -= 100;
1484 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1485 wnm_bss_keep_alive, wpa_s, NULL);
1486 }
1487 #endif /* CONFIG_SME */
1488 }
1489
1490
1491 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1492 const u8 *ies, size_t ies_len)
1493 {
1494 struct ieee802_11_elems elems;
1495
1496 if (ies == NULL)
1497 return;
1498
1499 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1500 return;
1501
1502 #ifdef CONFIG_SME
1503 if (elems.bss_max_idle_period) {
1504 unsigned int msec;
1505 wpa_s->sme.bss_max_idle_period =
1506 WPA_GET_LE16(elems.bss_max_idle_period);
1507 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1508 "TU)%s", wpa_s->sme.bss_max_idle_period,
1509 (elems.bss_max_idle_period[2] & 0x01) ?
1510 " (protected keep-live required)" : "");
1511 if (wpa_s->sme.bss_max_idle_period == 0)
1512 wpa_s->sme.bss_max_idle_period = 1;
1513 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1514 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1515 /* msec times 1000 */
1516 msec = wpa_s->sme.bss_max_idle_period * 1024;
1517 if (msec > 100)
1518 msec -= 100;
1519 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1520 wnm_bss_keep_alive, wpa_s,
1521 NULL);
1522 }
1523 }
1524 #endif /* CONFIG_SME */
1525 }
1526
1527 #endif /* CONFIG_WNM */
1528
1529
1530 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1531 {
1532 #ifdef CONFIG_WNM
1533 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1534 #endif /* CONFIG_WNM */
1535 }
1536
1537
1538 #ifdef CONFIG_INTERWORKING
1539
1540 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1541 size_t len)
1542 {
1543 int res;
1544
1545 wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1546 res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1547 if (res) {
1548 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1549 }
1550
1551 return res;
1552 }
1553
1554
1555 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1556 const u8 *ies, size_t ies_len)
1557 {
1558 struct ieee802_11_elems elems;
1559
1560 if (ies == NULL)
1561 return;
1562
1563 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1564 return;
1565
1566 if (elems.qos_map_set) {
1567 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1568 elems.qos_map_set_len);
1569 }
1570 }
1571
1572 #endif /* CONFIG_INTERWORKING */
1573
1574
1575 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1576 union wpa_event_data *data)
1577 {
1578 int l, len, found = 0, wpa_found, rsn_found;
1579 const u8 *p;
1580 #ifdef CONFIG_IEEE80211R
1581 u8 bssid[ETH_ALEN];
1582 #endif /* CONFIG_IEEE80211R */
1583
1584 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1585 if (data->assoc_info.req_ies)
1586 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1587 data->assoc_info.req_ies_len);
1588 if (data->assoc_info.resp_ies) {
1589 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1590 data->assoc_info.resp_ies_len);
1591 #ifdef CONFIG_TDLS
1592 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1593 data->assoc_info.resp_ies_len);
1594 #endif /* CONFIG_TDLS */
1595 #ifdef CONFIG_WNM
1596 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1597 data->assoc_info.resp_ies_len);
1598 #endif /* CONFIG_WNM */
1599 #ifdef CONFIG_INTERWORKING
1600 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1601 data->assoc_info.resp_ies_len);
1602 #endif /* CONFIG_INTERWORKING */
1603 }
1604 if (data->assoc_info.beacon_ies)
1605 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1606 data->assoc_info.beacon_ies,
1607 data->assoc_info.beacon_ies_len);
1608 if (data->assoc_info.freq)
1609 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1610 data->assoc_info.freq);
1611
1612 p = data->assoc_info.req_ies;
1613 l = data->assoc_info.req_ies_len;
1614
1615 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1616 while (p && l >= 2) {
1617 len = p[1] + 2;
1618 if (len > l) {
1619 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1620 p, l);
1621 break;
1622 }
1623 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1624 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1625 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1626 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1627 break;
1628 found = 1;
1629 wpa_find_assoc_pmkid(wpa_s);
1630 break;
1631 }
1632 l -= len;
1633 p += len;
1634 }
1635 if (!found && data->assoc_info.req_ies)
1636 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1637
1638 #ifdef CONFIG_IEEE80211R
1639 #ifdef CONFIG_SME
1640 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1641 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1642 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1643 data->assoc_info.resp_ies,
1644 data->assoc_info.resp_ies_len,
1645 bssid) < 0) {
1646 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1647 "Reassociation Response failed");
1648 wpa_supplicant_deauthenticate(
1649 wpa_s, WLAN_REASON_INVALID_IE);
1650 return -1;
1651 }
1652 }
1653
1654 p = data->assoc_info.resp_ies;
1655 l = data->assoc_info.resp_ies_len;
1656
1657 #ifdef CONFIG_WPS_STRICT
1658 if (p && wpa_s->current_ssid &&
1659 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1660 struct wpabuf *wps;
1661 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1662 if (wps == NULL) {
1663 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1664 "include WPS IE in (Re)Association Response");
1665 return -1;
1666 }
1667
1668 if (wps_validate_assoc_resp(wps) < 0) {
1669 wpabuf_free(wps);
1670 wpa_supplicant_deauthenticate(
1671 wpa_s, WLAN_REASON_INVALID_IE);
1672 return -1;
1673 }
1674 wpabuf_free(wps);
1675 }
1676 #endif /* CONFIG_WPS_STRICT */
1677
1678 /* Go through the IEs and make a copy of the MDIE, if present. */
1679 while (p && l >= 2) {
1680 len = p[1] + 2;
1681 if (len > l) {
1682 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1683 p, l);
1684 break;
1685 }
1686 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1687 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1688 wpa_s->sme.ft_used = 1;
1689 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1690 MOBILITY_DOMAIN_ID_LEN);
1691 break;
1692 }
1693 l -= len;
1694 p += len;
1695 }
1696 #endif /* CONFIG_SME */
1697
1698 /* Process FT when SME is in the driver */
1699 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1700 wpa_ft_is_completed(wpa_s->wpa)) {
1701 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1702 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1703 data->assoc_info.resp_ies,
1704 data->assoc_info.resp_ies_len,
1705 bssid) < 0) {
1706 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1707 "Reassociation Response failed");
1708 wpa_supplicant_deauthenticate(
1709 wpa_s, WLAN_REASON_INVALID_IE);
1710 return -1;
1711 }
1712 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1713 }
1714
1715 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1716 data->assoc_info.resp_ies_len);
1717 #endif /* CONFIG_IEEE80211R */
1718
1719 /* WPA/RSN IE from Beacon/ProbeResp */
1720 p = data->assoc_info.beacon_ies;
1721 l = data->assoc_info.beacon_ies_len;
1722
1723 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1724 */
1725 wpa_found = rsn_found = 0;
1726 while (p && l >= 2) {
1727 len = p[1] + 2;
1728 if (len > l) {
1729 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1730 p, l);
1731 break;
1732 }
1733 if (!wpa_found &&
1734 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1735 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1736 wpa_found = 1;
1737 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1738 }
1739
1740 if (!rsn_found &&
1741 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1742 rsn_found = 1;
1743 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1744 }
1745
1746 l -= len;
1747 p += len;
1748 }
1749
1750 if (!wpa_found && data->assoc_info.beacon_ies)
1751 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1752 if (!rsn_found && data->assoc_info.beacon_ies)
1753 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1754 if (wpa_found || rsn_found)
1755 wpa_s->ap_ies_from_associnfo = 1;
1756
1757 if (wpa_s->assoc_freq && data->assoc_info.freq &&
1758 wpa_s->assoc_freq != data->assoc_info.freq) {
1759 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1760 "%u to %u MHz",
1761 wpa_s->assoc_freq, data->assoc_info.freq);
1762 wpa_supplicant_update_scan_results(wpa_s);
1763 }
1764
1765 wpa_s->assoc_freq = data->assoc_info.freq;
1766
1767 return 0;
1768 }
1769
1770
1771 static struct wpa_bss * wpa_supplicant_get_new_bss(
1772 struct wpa_supplicant *wpa_s, const u8 *bssid)
1773 {
1774 struct wpa_bss *bss = NULL;
1775 struct wpa_ssid *ssid = wpa_s->current_ssid;
1776
1777 if (ssid->ssid_len > 0)
1778 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
1779 if (!bss)
1780 bss = wpa_bss_get_bssid(wpa_s, bssid);
1781
1782 return bss;
1783 }
1784
1785
1786 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1787 {
1788 const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1789
1790 if (!wpa_s->current_bss || !wpa_s->current_ssid)
1791 return -1;
1792
1793 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1794 return 0;
1795
1796 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1797 WPA_IE_VENDOR_TYPE);
1798 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1799
1800 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1801 bss_wpa ? 2 + bss_wpa[1] : 0) ||
1802 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1803 bss_rsn ? 2 + bss_rsn[1] : 0))
1804 return -1;
1805
1806 return 0;
1807 }
1808
1809
1810 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1811 union wpa_event_data *data)
1812 {
1813 u8 bssid[ETH_ALEN];
1814 int ft_completed;
1815
1816 #ifdef CONFIG_AP
1817 if (wpa_s->ap_iface) {
1818 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1819 data->assoc_info.addr,
1820 data->assoc_info.req_ies,
1821 data->assoc_info.req_ies_len,
1822 data->assoc_info.reassoc);
1823 return;
1824 }
1825 #endif /* CONFIG_AP */
1826
1827 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1828 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1829 return;
1830
1831 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1832 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1833 wpa_supplicant_deauthenticate(
1834 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1835 return;
1836 }
1837
1838 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1839 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1840 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1841 MACSTR, MAC2STR(bssid));
1842 random_add_randomness(bssid, ETH_ALEN);
1843 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1844 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1845 wpas_notify_bssid_changed(wpa_s);
1846
1847 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1848 wpa_clear_keys(wpa_s, bssid);
1849 }
1850 if (wpa_supplicant_select_config(wpa_s) < 0) {
1851 wpa_supplicant_deauthenticate(
1852 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1853 return;
1854 }
1855 if (wpa_s->current_ssid) {
1856 struct wpa_bss *bss = NULL;
1857
1858 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1859 if (!bss) {
1860 wpa_supplicant_update_scan_results(wpa_s);
1861
1862 /* Get the BSS from the new scan results */
1863 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1864 }
1865
1866 if (bss)
1867 wpa_s->current_bss = bss;
1868 }
1869
1870 if (wpa_s->conf->ap_scan == 1 &&
1871 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1872 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1873 wpa_msg(wpa_s, MSG_WARNING,
1874 "WPA/RSN IEs not updated");
1875 }
1876 }
1877
1878 #ifdef CONFIG_SME
1879 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1880 wpa_s->sme.prev_bssid_set = 1;
1881 #endif /* CONFIG_SME */
1882
1883 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1884 if (wpa_s->current_ssid) {
1885 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1886 * initialized before association, but for other modes,
1887 * initialize PC/SC here, if the current configuration needs
1888 * smartcard or SIM/USIM. */
1889 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1890 }
1891 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1892 if (wpa_s->l2)
1893 l2_packet_notify_auth_start(wpa_s->l2);
1894
1895 /*
1896 * Set portEnabled first to FALSE in order to get EAP state machine out
1897 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1898 * state machine may transit to AUTHENTICATING state based on obsolete
1899 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1900 * AUTHENTICATED without ever giving chance to EAP state machine to
1901 * reset the state.
1902 */
1903 if (!ft_completed) {
1904 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1905 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1906 }
1907 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1908 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1909 /* 802.1X::portControl = Auto */
1910 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1911 wpa_s->eapol_received = 0;
1912 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1913 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1914 (wpa_s->current_ssid &&
1915 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1916 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
1917 (wpa_s->drv_flags &
1918 WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1919 /*
1920 * Set the key after having received joined-IBSS event
1921 * from the driver.
1922 */
1923 wpa_supplicant_set_wpa_none_key(wpa_s,
1924 wpa_s->current_ssid);
1925 }
1926 wpa_supplicant_cancel_auth_timeout(wpa_s);
1927 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1928 } else if (!ft_completed) {
1929 /* Timeout for receiving the first EAPOL packet */
1930 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1931 }
1932 wpa_supplicant_cancel_scan(wpa_s);
1933
1934 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1935 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1936 /*
1937 * We are done; the driver will take care of RSN 4-way
1938 * handshake.
1939 */
1940 wpa_supplicant_cancel_auth_timeout(wpa_s);
1941 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1942 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1943 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1944 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1945 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1946 /*
1947 * The driver will take care of RSN 4-way handshake, so we need
1948 * to allow EAPOL supplicant to complete its work without
1949 * waiting for WPA supplicant.
1950 */
1951 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1952 } else if (ft_completed) {
1953 /*
1954 * FT protocol completed - make sure EAPOL state machine ends
1955 * up in authenticated.
1956 */
1957 wpa_supplicant_cancel_auth_timeout(wpa_s);
1958 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1959 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1960 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1961 }
1962
1963 wpa_s->last_eapol_matches_bssid = 0;
1964
1965 if (wpa_s->pending_eapol_rx) {
1966 struct os_time now, age;
1967 os_get_time(&now);
1968 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1969 if (age.sec == 0 && age.usec < 100000 &&
1970 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1971 0) {
1972 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1973 "frame that was received just before "
1974 "association notification");
1975 wpa_supplicant_rx_eapol(
1976 wpa_s, wpa_s->pending_eapol_rx_src,
1977 wpabuf_head(wpa_s->pending_eapol_rx),
1978 wpabuf_len(wpa_s->pending_eapol_rx));
1979 }
1980 wpabuf_free(wpa_s->pending_eapol_rx);
1981 wpa_s->pending_eapol_rx = NULL;
1982 }
1983
1984 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1985 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1986 wpa_s->current_ssid &&
1987 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1988 /* Set static WEP keys again */
1989 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1990 }
1991
1992 #ifdef CONFIG_IBSS_RSN
1993 if (wpa_s->current_ssid &&
1994 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1995 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1996 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1997 wpa_s->ibss_rsn == NULL) {
1998 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1999 if (!wpa_s->ibss_rsn) {
2000 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2001 wpa_supplicant_deauthenticate(
2002 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2003 return;
2004 }
2005
2006 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2007 }
2008 #endif /* CONFIG_IBSS_RSN */
2009
2010 wpas_wps_notify_assoc(wpa_s, bssid);
2011 }
2012
2013
2014 static int disconnect_reason_recoverable(u16 reason_code)
2015 {
2016 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2017 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2018 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2019 }
2020
2021
2022 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2023 u16 reason_code,
2024 int locally_generated)
2025 {
2026 const u8 *bssid;
2027
2028 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2029 /*
2030 * At least Host AP driver and a Prism3 card seemed to be
2031 * generating streams of disconnected events when configuring
2032 * IBSS for WPA-None. Ignore them for now.
2033 */
2034 return;
2035 }
2036
2037 bssid = wpa_s->bssid;
2038 if (is_zero_ether_addr(bssid))
2039 bssid = wpa_s->pending_bssid;
2040
2041 if (!is_zero_ether_addr(bssid) ||
2042 wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2043 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2044 " reason=%d%s",
2045 MAC2STR(bssid), reason_code,
2046 locally_generated ? " locally_generated=1" : "");
2047 }
2048 }
2049
2050
2051 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2052 int locally_generated)
2053 {
2054 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2055 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2056 return 0; /* Not in 4-way handshake with PSK */
2057
2058 /*
2059 * It looks like connection was lost while trying to go through PSK
2060 * 4-way handshake. Filter out known disconnection cases that are caused
2061 * by something else than PSK mismatch to avoid confusing reports.
2062 */
2063
2064 if (locally_generated) {
2065 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2066 return 0;
2067 }
2068
2069 return 1;
2070 }
2071
2072
2073 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2074 u16 reason_code,
2075 int locally_generated)
2076 {
2077 const u8 *bssid;
2078 int authenticating;
2079 u8 prev_pending_bssid[ETH_ALEN];
2080 struct wpa_bss *fast_reconnect = NULL;
2081 #ifndef CONFIG_NO_SCAN_PROCESSING
2082 struct wpa_ssid *fast_reconnect_ssid = NULL;
2083 #endif /* CONFIG_NO_SCAN_PROCESSING */
2084 struct wpa_ssid *last_ssid;
2085
2086 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2087 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2088
2089 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2090 /*
2091 * At least Host AP driver and a Prism3 card seemed to be
2092 * generating streams of disconnected events when configuring
2093 * IBSS for WPA-None. Ignore them for now.
2094 */
2095 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2096 "IBSS/WPA-None mode");
2097 return;
2098 }
2099
2100 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2101 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2102 "pre-shared key may be incorrect");
2103 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2104 return; /* P2P group removed */
2105 wpas_auth_failed(wpa_s);
2106 }
2107 if (!wpa_s->disconnected &&
2108 (!wpa_s->auto_reconnect_disabled ||
2109 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)) {
2110 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2111 "reconnect (wps=%d wpa_state=%d)",
2112 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2113 wpa_s->wpa_state);
2114 if (wpa_s->wpa_state == WPA_COMPLETED &&
2115 wpa_s->current_ssid &&
2116 wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2117 !locally_generated &&
2118 disconnect_reason_recoverable(reason_code)) {
2119 /*
2120 * It looks like the AP has dropped association with
2121 * us, but could allow us to get back in. Try to
2122 * reconnect to the same BSS without full scan to save
2123 * time for some common cases.
2124 */
2125 fast_reconnect = wpa_s->current_bss;
2126 #ifndef CONFIG_NO_SCAN_PROCESSING
2127 fast_reconnect_ssid = wpa_s->current_ssid;
2128 #endif /* CONFIG_NO_SCAN_PROCESSING */
2129 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2130 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2131 else
2132 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2133 "immediate scan");
2134 } else {
2135 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2136 "try to re-connect");
2137 wpa_s->reassociate = 0;
2138 wpa_s->disconnected = 1;
2139 wpa_supplicant_cancel_sched_scan(wpa_s);
2140 }
2141 bssid = wpa_s->bssid;
2142 if (is_zero_ether_addr(bssid))
2143 bssid = wpa_s->pending_bssid;
2144 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2145 wpas_connection_failed(wpa_s, bssid);
2146 wpa_sm_notify_disassoc(wpa_s->wpa);
2147 if (locally_generated)
2148 wpa_s->disconnect_reason = -reason_code;
2149 else
2150 wpa_s->disconnect_reason = reason_code;
2151 wpas_notify_disconnect_reason(wpa_s);
2152 if (wpa_supplicant_dynamic_keys(wpa_s)) {
2153 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2154 wpa_s->keys_cleared = 0;
2155 wpa_clear_keys(wpa_s, wpa_s->bssid);
2156 }
2157 last_ssid = wpa_s->current_ssid;
2158 wpa_supplicant_mark_disassoc(wpa_s);
2159
2160 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2161 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2162 wpa_s->current_ssid = last_ssid;
2163 }
2164
2165 if (fast_reconnect) {
2166 #ifndef CONFIG_NO_SCAN_PROCESSING
2167 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2168 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2169 fast_reconnect_ssid) < 0) {
2170 /* Recover through full scan */
2171 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2172 }
2173 #endif /* CONFIG_NO_SCAN_PROCESSING */
2174 }
2175 }
2176
2177
2178 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2179 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2180 {
2181 struct wpa_supplicant *wpa_s = eloop_ctx;
2182
2183 if (!wpa_s->pending_mic_error_report)
2184 return;
2185
2186 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2187 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2188 wpa_s->pending_mic_error_report = 0;
2189 }
2190 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2191
2192
2193 static void
2194 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2195 union wpa_event_data *data)
2196 {
2197 int pairwise;
2198 struct os_time t;
2199
2200 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2201 pairwise = (data && data->michael_mic_failure.unicast);
2202 os_get_time(&t);
2203 if ((wpa_s->last_michael_mic_error &&
2204 t.sec - wpa_s->last_michael_mic_error <= 60) ||
2205 wpa_s->pending_mic_error_report) {
2206 if (wpa_s->pending_mic_error_report) {
2207 /*
2208 * Send the pending MIC error report immediately since
2209 * we are going to start countermeasures and AP better
2210 * do the same.
2211 */
2212 wpa_sm_key_request(wpa_s->wpa, 1,
2213 wpa_s->pending_mic_error_pairwise);
2214 }
2215
2216 /* Send the new MIC error report immediately since we are going
2217 * to start countermeasures and AP better do the same.
2218 */
2219 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2220
2221 /* initialize countermeasures */
2222 wpa_s->countermeasures = 1;
2223
2224 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2225
2226 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2227
2228 /*
2229 * Need to wait for completion of request frame. We do not get
2230 * any callback for the message completion, so just wait a
2231 * short while and hope for the best. */
2232 os_sleep(0, 10000);
2233
2234 wpa_drv_set_countermeasures(wpa_s, 1);
2235 wpa_supplicant_deauthenticate(wpa_s,
2236 WLAN_REASON_MICHAEL_MIC_FAILURE);
2237 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2238 wpa_s, NULL);
2239 eloop_register_timeout(60, 0,
2240 wpa_supplicant_stop_countermeasures,
2241 wpa_s, NULL);
2242 /* TODO: mark the AP rejected for 60 second. STA is
2243 * allowed to associate with another AP.. */
2244 } else {
2245 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2246 if (wpa_s->mic_errors_seen) {
2247 /*
2248 * Reduce the effectiveness of Michael MIC error
2249 * reports as a means for attacking against TKIP if
2250 * more than one MIC failure is noticed with the same
2251 * PTK. We delay the transmission of the reports by a
2252 * random time between 0 and 60 seconds in order to
2253 * force the attacker wait 60 seconds before getting
2254 * the information on whether a frame resulted in a MIC
2255 * failure.
2256 */
2257 u8 rval[4];
2258 int sec;
2259
2260 if (os_get_random(rval, sizeof(rval)) < 0)
2261 sec = os_random() % 60;
2262 else
2263 sec = WPA_GET_BE32(rval) % 60;
2264 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2265 "report %d seconds", sec);
2266 wpa_s->pending_mic_error_report = 1;
2267 wpa_s->pending_mic_error_pairwise = pairwise;
2268 eloop_cancel_timeout(
2269 wpa_supplicant_delayed_mic_error_report,
2270 wpa_s, NULL);
2271 eloop_register_timeout(
2272 sec, os_random() % 1000000,
2273 wpa_supplicant_delayed_mic_error_report,
2274 wpa_s, NULL);
2275 } else {
2276 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2277 }
2278 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2279 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2280 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2281 }
2282 wpa_s->last_michael_mic_error = t.sec;
2283 wpa_s->mic_errors_seen++;
2284 }
2285
2286
2287 #ifdef CONFIG_TERMINATE_ONLASTIF
2288 static int any_interfaces(struct wpa_supplicant *head)
2289 {
2290 struct wpa_supplicant *wpa_s;
2291
2292 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2293 if (!wpa_s->interface_removed)
2294 return 1;
2295 return 0;
2296 }
2297 #endif /* CONFIG_TERMINATE_ONLASTIF */
2298
2299
2300 static void
2301 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2302 union wpa_event_data *data)
2303 {
2304 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2305 return;
2306
2307 switch (data->interface_status.ievent) {
2308 case EVENT_INTERFACE_ADDED:
2309 if (!wpa_s->interface_removed)
2310 break;
2311 wpa_s->interface_removed = 0;
2312 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2313 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2314 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2315 "driver after interface was added");
2316 }
2317 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2318 break;
2319 case EVENT_INTERFACE_REMOVED:
2320 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2321 wpa_s->interface_removed = 1;
2322 wpa_supplicant_mark_disassoc(wpa_s);
2323 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2324 l2_packet_deinit(wpa_s->l2);
2325 wpa_s->l2 = NULL;
2326 #ifdef CONFIG_IBSS_RSN
2327 ibss_rsn_deinit(wpa_s->ibss_rsn);
2328 wpa_s->ibss_rsn = NULL;
2329 #endif /* CONFIG_IBSS_RSN */
2330 #ifdef CONFIG_TERMINATE_ONLASTIF
2331 /* check if last interface */
2332 if (!any_interfaces(wpa_s->global->ifaces))
2333 eloop_terminate();
2334 #endif /* CONFIG_TERMINATE_ONLASTIF */
2335 break;
2336 }
2337 }
2338
2339
2340 #ifdef CONFIG_PEERKEY
2341 static void
2342 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2343 union wpa_event_data *data)
2344 {
2345 if (data == NULL)
2346 return;
2347 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2348 }
2349 #endif /* CONFIG_PEERKEY */
2350
2351
2352 #ifdef CONFIG_TDLS
2353 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2354 union wpa_event_data *data)
2355 {
2356 if (data == NULL)
2357 return;
2358 switch (data->tdls.oper) {
2359 case TDLS_REQUEST_SETUP:
2360 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2361 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2362 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2363 else
2364 wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2365 break;
2366 case TDLS_REQUEST_TEARDOWN:
2367 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2368 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2369 data->tdls.reason_code);
2370 else
2371 wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2372 data->tdls.peer);
2373 break;
2374 }
2375 }
2376 #endif /* CONFIG_TDLS */
2377
2378
2379 #ifdef CONFIG_WNM
2380 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2381 union wpa_event_data *data)
2382 {
2383 if (data == NULL)
2384 return;
2385 switch (data->wnm.oper) {
2386 case WNM_OPER_SLEEP:
2387 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2388 "(action=%d, intval=%d)",
2389 data->wnm.sleep_action, data->wnm.sleep_intval);
2390 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2391 data->wnm.sleep_intval, NULL);
2392 break;
2393 }
2394 }
2395 #endif /* CONFIG_WNM */
2396
2397
2398 #ifdef CONFIG_IEEE80211R
2399 static void
2400 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2401 union wpa_event_data *data)
2402 {
2403 if (data == NULL)
2404 return;
2405
2406 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2407 data->ft_ies.ies_len,
2408 data->ft_ies.ft_action,
2409 data->ft_ies.target_ap,
2410 data->ft_ies.ric_ies,
2411 data->ft_ies.ric_ies_len) < 0) {
2412 /* TODO: prevent MLME/driver from trying to associate? */
2413 }
2414 }
2415 #endif /* CONFIG_IEEE80211R */
2416
2417
2418 #ifdef CONFIG_IBSS_RSN
2419 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2420 union wpa_event_data *data)
2421 {
2422 struct wpa_ssid *ssid;
2423 if (wpa_s->wpa_state < WPA_ASSOCIATED)
2424 return;
2425 if (data == NULL)
2426 return;
2427 ssid = wpa_s->current_ssid;
2428 if (ssid == NULL)
2429 return;
2430 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2431 return;
2432
2433 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2434 }
2435
2436
2437 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2438 union wpa_event_data *data)
2439 {
2440 struct wpa_ssid *ssid = wpa_s->current_ssid;
2441
2442 if (ssid == NULL)
2443 return;
2444
2445 /* check if the ssid is correctly configured as IBSS/RSN */
2446 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2447 return;
2448
2449 ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2450 data->rx_mgmt.frame_len);
2451 }
2452 #endif /* CONFIG_IBSS_RSN */
2453
2454
2455 #ifdef CONFIG_IEEE80211R
2456 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2457 size_t len)
2458 {
2459 const u8 *sta_addr, *target_ap_addr;
2460 u16 status;
2461
2462 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2463 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2464 return; /* only SME case supported for now */
2465 if (len < 1 + 2 * ETH_ALEN + 2)
2466 return;
2467 if (data[0] != 2)
2468 return; /* Only FT Action Response is supported for now */
2469 sta_addr = data + 1;
2470 target_ap_addr = data + 1 + ETH_ALEN;
2471 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2472 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2473 MACSTR " TargetAP " MACSTR " status %u",
2474 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2475
2476 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2477 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2478 " in FT Action Response", MAC2STR(sta_addr));
2479 return;
2480 }
2481
2482 if (status) {
2483 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2484 "failure (status code %d)", status);
2485 /* TODO: report error to FT code(?) */
2486 return;
2487 }
2488
2489 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2490 len - (1 + 2 * ETH_ALEN + 2), 1,
2491 target_ap_addr, NULL, 0) < 0)
2492 return;
2493
2494 #ifdef CONFIG_SME
2495 {
2496 struct wpa_bss *bss;
2497 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2498 if (bss)
2499 wpa_s->sme.freq = bss->freq;
2500 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2501 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2502 WLAN_AUTH_FT);
2503 }
2504 #endif /* CONFIG_SME */
2505 }
2506 #endif /* CONFIG_IEEE80211R */
2507
2508
2509 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2510 struct unprot_deauth *e)
2511 {
2512 #ifdef CONFIG_IEEE80211W
2513 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2514 "dropped: " MACSTR " -> " MACSTR
2515 " (reason code %u)",
2516 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2517 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2518 #endif /* CONFIG_IEEE80211W */
2519 }
2520
2521
2522 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2523 struct unprot_disassoc *e)
2524 {
2525 #ifdef CONFIG_IEEE80211W
2526 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2527 "dropped: " MACSTR " -> " MACSTR
2528 " (reason code %u)",
2529 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2530 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2531 #endif /* CONFIG_IEEE80211W */
2532 }
2533
2534
2535 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2536 u16 reason_code, int locally_generated,
2537 const u8 *ie, size_t ie_len, int deauth)
2538 {
2539 #ifdef CONFIG_AP
2540 if (wpa_s->ap_iface && addr) {
2541 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2542 return;
2543 }
2544
2545 if (wpa_s->ap_iface) {
2546 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2547 return;
2548 }
2549 #endif /* CONFIG_AP */
2550
2551 wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2552
2553 if (reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2554 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2555 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2556 eapol_sm_failed(wpa_s->eapol)))
2557 wpas_auth_failed(wpa_s);
2558
2559 #ifdef CONFIG_P2P
2560 if (deauth && reason_code > 0) {
2561 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2562 locally_generated) > 0) {
2563 /*
2564 * The interface was removed, so cannot continue
2565 * processing any additional operations after this.
2566 */
2567 return;
2568 }
2569 }
2570 #endif /* CONFIG_P2P */
2571
2572 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2573 locally_generated);
2574 }
2575
2576
2577 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2578 struct disassoc_info *info)
2579 {
2580 u16 reason_code = 0;
2581 int locally_generated = 0;
2582 const u8 *addr = NULL;
2583 const u8 *ie = NULL;
2584 size_t ie_len = 0;
2585
2586 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2587
2588 if (info) {
2589 addr = info->addr;
2590 ie = info->ie;
2591 ie_len = info->ie_len;
2592 reason_code = info->reason_code;
2593 locally_generated = info->locally_generated;
2594 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2595 locally_generated ? " (locally generated)" : "");
2596 if (addr)
2597 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2598 MAC2STR(addr));
2599 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2600 ie, ie_len);
2601 }
2602
2603 #ifdef CONFIG_AP
2604 if (wpa_s->ap_iface && info && info->addr) {
2605 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2606 return;
2607 }
2608
2609 if (wpa_s->ap_iface) {
2610 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2611 return;
2612 }
2613 #endif /* CONFIG_AP */
2614
2615 #ifdef CONFIG_P2P
2616 if (info) {
2617 wpas_p2p_disassoc_notif(
2618 wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2619 locally_generated);
2620 }
2621 #endif /* CONFIG_P2P */
2622
2623 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2624 sme_event_disassoc(wpa_s, info);
2625
2626 wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2627 ie, ie_len, 0);
2628 }
2629
2630
2631 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2632 struct deauth_info *info)
2633 {
2634 u16 reason_code = 0;
2635 int locally_generated = 0;
2636 const u8 *addr = NULL;
2637 const u8 *ie = NULL;
2638 size_t ie_len = 0;
2639
2640 wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2641
2642 if (info) {
2643 addr = info->addr;
2644 ie = info->ie;
2645 ie_len = info->ie_len;
2646 reason_code = info->reason_code;
2647 locally_generated = info->locally_generated;
2648 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2649 reason_code,
2650 locally_generated ? " (locally generated)" : "");
2651 if (addr) {
2652 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2653 MAC2STR(addr));
2654 }
2655 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2656 ie, ie_len);
2657 }
2658
2659 wpa_reset_ft_completed(wpa_s->wpa);
2660
2661 wpas_event_disconnect(wpa_s, addr, reason_code,
2662 locally_generated, ie, ie_len, 1);
2663 }
2664
2665
2666 static void wpa_supplicant_update_channel_list(struct wpa_supplicant *wpa_s)
2667 {
2668 const char *rn, *rn2;
2669 struct wpa_supplicant *ifs;
2670
2671 if (wpa_s->drv_priv == NULL)
2672 return; /* Ignore event during drv initialization */
2673
2674 free_hw_features(wpa_s);
2675 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2676 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2677
2678 #ifdef CONFIG_P2P
2679 wpas_p2p_update_channel_list(wpa_s);
2680 #endif /* CONFIG_P2P */
2681
2682 /*
2683 * Check other interfaces to see if they have the same radio-name. If
2684 * so, they get updated with this same hw mode info.
2685 */
2686 if (!wpa_s->driver->get_radio_name)
2687 return;
2688
2689 rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
2690 if (rn == NULL || rn[0] == '\0')
2691 return;
2692
2693 wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
2694 "sharing same radio (%s) in event_channel_list_change", rn);
2695
2696 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2697 if (ifs == wpa_s || !ifs->driver->get_radio_name)
2698 continue;
2699
2700 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
2701 if (rn2 && os_strcmp(rn, rn2) == 0) {
2702 wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2703 ifs->ifname);
2704 free_hw_features(ifs);
2705 ifs->hw.modes = wpa_drv_get_hw_feature_data(
2706 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2707 }
2708 }
2709 }
2710
2711
2712 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2713 union wpa_event_data *data)
2714 {
2715 struct wpa_supplicant *wpa_s = ctx;
2716
2717 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2718 event != EVENT_INTERFACE_ENABLED &&
2719 event != EVENT_INTERFACE_STATUS &&
2720 event != EVENT_SCHED_SCAN_STOPPED) {
2721 wpa_dbg(wpa_s, MSG_DEBUG,
2722 "Ignore event %s (%d) while interface is disabled",
2723 event_to_string(event), event);
2724 return;
2725 }
2726
2727 #ifndef CONFIG_NO_STDOUT_DEBUG
2728 {
2729 int level = MSG_DEBUG;
2730
2731 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2732 const struct ieee80211_hdr *hdr;
2733 u16 fc;
2734 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2735 fc = le_to_host16(hdr->frame_control);
2736 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2737 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2738 level = MSG_EXCESSIVE;
2739 }
2740
2741 wpa_dbg(wpa_s, level, "Event %s (%d) received",
2742 event_to_string(event), event);
2743 }
2744 #endif /* CONFIG_NO_STDOUT_DEBUG */
2745
2746 switch (event) {
2747 case EVENT_AUTH:
2748 sme_event_auth(wpa_s, data);
2749 break;
2750 case EVENT_ASSOC:
2751 wpa_supplicant_event_assoc(wpa_s, data);
2752 break;
2753 case EVENT_DISASSOC:
2754 wpas_event_disassoc(wpa_s,
2755 data ? &data->disassoc_info : NULL);
2756 break;
2757 case EVENT_DEAUTH:
2758 wpas_event_deauth(wpa_s,
2759 data ? &data->deauth_info : NULL);
2760 break;
2761 case EVENT_MICHAEL_MIC_FAILURE:
2762 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2763 break;
2764 #ifndef CONFIG_NO_SCAN_PROCESSING
2765 case EVENT_SCAN_RESULTS:
2766 wpa_supplicant_event_scan_results(wpa_s, data);
2767 if (wpa_s->wpa_state != WPA_AUTHENTICATING &&
2768 wpa_s->wpa_state != WPA_ASSOCIATING)
2769 wpas_p2p_continue_after_scan(wpa_s);
2770 break;
2771 #endif /* CONFIG_NO_SCAN_PROCESSING */
2772 case EVENT_ASSOCINFO:
2773 wpa_supplicant_event_associnfo(wpa_s, data);
2774 break;
2775 case EVENT_INTERFACE_STATUS:
2776 wpa_supplicant_event_interface_status(wpa_s, data);
2777 break;
2778 case EVENT_PMKID_CANDIDATE:
2779 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2780 break;
2781 #ifdef CONFIG_PEERKEY
2782 case EVENT_STKSTART:
2783 wpa_supplicant_event_stkstart(wpa_s, data);
2784 break;
2785 #endif /* CONFIG_PEERKEY */
2786 #ifdef CONFIG_TDLS
2787 case EVENT_TDLS:
2788 wpa_supplicant_event_tdls(wpa_s, data);
2789 break;
2790 #endif /* CONFIG_TDLS */
2791 #ifdef CONFIG_WNM
2792 case EVENT_WNM:
2793 wpa_supplicant_event_wnm(wpa_s, data);
2794 break;
2795 #endif /* CONFIG_WNM */
2796 #ifdef CONFIG_IEEE80211R
2797 case EVENT_FT_RESPONSE:
2798 wpa_supplicant_event_ft_response(wpa_s, data);
2799 break;
2800 #endif /* CONFIG_IEEE80211R */
2801 #ifdef CONFIG_IBSS_RSN
2802 case EVENT_IBSS_RSN_START:
2803 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2804 break;
2805 #endif /* CONFIG_IBSS_RSN */
2806 case EVENT_ASSOC_REJECT:
2807 if (data->assoc_reject.bssid)
2808 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2809 "bssid=" MACSTR " status_code=%u",
2810 MAC2STR(data->assoc_reject.bssid),
2811 data->assoc_reject.status_code);
2812 else
2813 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2814 "status_code=%u",
2815 data->assoc_reject.status_code);
2816 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2817 sme_event_assoc_reject(wpa_s, data);
2818 else {
2819 const u8 *bssid = data->assoc_reject.bssid;
2820 if (bssid == NULL || is_zero_ether_addr(bssid))
2821 bssid = wpa_s->pending_bssid;
2822 wpas_connection_failed(wpa_s, bssid);
2823 wpa_supplicant_mark_disassoc(wpa_s);
2824 }
2825 break;
2826 case EVENT_AUTH_TIMED_OUT:
2827 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2828 sme_event_auth_timed_out(wpa_s, data);
2829 break;
2830 case EVENT_ASSOC_TIMED_OUT:
2831 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2832 sme_event_assoc_timed_out(wpa_s, data);
2833 break;
2834 case EVENT_TX_STATUS:
2835 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2836 " type=%d stype=%d",
2837 MAC2STR(data->tx_status.dst),
2838 data->tx_status.type, data->tx_status.stype);
2839 #ifdef CONFIG_AP
2840 if (wpa_s->ap_iface == NULL) {
2841 #ifdef CONFIG_OFFCHANNEL
2842 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2843 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2844 offchannel_send_action_tx_status(
2845 wpa_s, data->tx_status.dst,
2846 data->tx_status.data,
2847 data->tx_status.data_len,
2848 data->tx_status.ack ?
2849 OFFCHANNEL_SEND_ACTION_SUCCESS :
2850 OFFCHANNEL_SEND_ACTION_NO_ACK);
2851 #endif /* CONFIG_OFFCHANNEL */
2852 break;
2853 }
2854 #endif /* CONFIG_AP */
2855 #ifdef CONFIG_OFFCHANNEL
2856 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2857 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2858 /*
2859 * Catch TX status events for Action frames we sent via group
2860 * interface in GO mode.
2861 */
2862 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2863 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2864 os_memcmp(wpa_s->parent->pending_action_dst,
2865 data->tx_status.dst, ETH_ALEN) == 0) {
2866 offchannel_send_action_tx_status(
2867 wpa_s->parent, data->tx_status.dst,
2868 data->tx_status.data,
2869 data->tx_status.data_len,
2870 data->tx_status.ack ?
2871 OFFCHANNEL_SEND_ACTION_SUCCESS :
2872 OFFCHANNEL_SEND_ACTION_NO_ACK);
2873 break;
2874 }
2875 #endif /* CONFIG_OFFCHANNEL */
2876 #ifdef CONFIG_AP
2877 switch (data->tx_status.type) {
2878 case WLAN_FC_TYPE_MGMT:
2879 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2880 data->tx_status.data_len,
2881 data->tx_status.stype,
2882 data->tx_status.ack);
2883 break;
2884 case WLAN_FC_TYPE_DATA:
2885 ap_tx_status(wpa_s, data->tx_status.dst,
2886 data->tx_status.data,
2887 data->tx_status.data_len,
2888 data->tx_status.ack);
2889 break;
2890 }
2891 #endif /* CONFIG_AP */
2892 break;
2893 #ifdef CONFIG_AP
2894 case EVENT_EAPOL_TX_STATUS:
2895 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
2896 data->eapol_tx_status.data,
2897 data->eapol_tx_status.data_len,
2898 data->eapol_tx_status.ack);
2899 break;
2900 case EVENT_DRIVER_CLIENT_POLL_OK:
2901 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2902 break;
2903 case EVENT_RX_FROM_UNKNOWN:
2904 if (wpa_s->ap_iface == NULL)
2905 break;
2906 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2907 data->rx_from_unknown.wds);
2908 break;
2909 case EVENT_CH_SWITCH:
2910 if (!data)
2911 break;
2912 if (!wpa_s->ap_iface) {
2913 wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
2914 "event in non-AP mode");
2915 break;
2916 }
2917
2918 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
2919 data->ch_switch.ht_enabled,
2920 data->ch_switch.ch_offset);
2921 break;
2922 #endif /* CONFIG_AP */
2923 #if defined(CONFIG_AP) || defined(CONFIG_IBSS_RSN)
2924 case EVENT_RX_MGMT: {
2925 u16 fc, stype;
2926 const struct ieee80211_mgmt *mgmt;
2927
2928 mgmt = (const struct ieee80211_mgmt *)
2929 data->rx_mgmt.frame;
2930 fc = le_to_host16(mgmt->frame_control);
2931 stype = WLAN_FC_GET_STYPE(fc);
2932
2933 #ifdef CONFIG_AP
2934 if (wpa_s->ap_iface == NULL) {
2935 #endif /* CONFIG_AP */
2936 #ifdef CONFIG_P2P
2937 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2938 data->rx_mgmt.frame_len > 24) {
2939 const u8 *src = mgmt->sa;
2940 const u8 *ie = mgmt->u.probe_req.variable;
2941 size_t ie_len = data->rx_mgmt.frame_len -
2942 (mgmt->u.probe_req.variable -
2943 data->rx_mgmt.frame);
2944 wpas_p2p_probe_req_rx(
2945 wpa_s, src, mgmt->da,
2946 mgmt->bssid, ie, ie_len,
2947 data->rx_mgmt.ssi_signal);
2948 break;
2949 }
2950 #endif /* CONFIG_P2P */
2951 #ifdef CONFIG_IBSS_RSN
2952 if (stype == WLAN_FC_STYPE_AUTH &&
2953 data->rx_mgmt.frame_len >= 30) {
2954 wpa_supplicant_event_ibss_auth(wpa_s, data);
2955 break;
2956 }
2957 #endif /* CONFIG_IBSS_RSN */
2958 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2959 "management frame in non-AP mode");
2960 break;
2961 #ifdef CONFIG_AP
2962 }
2963
2964 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2965 data->rx_mgmt.frame_len > 24) {
2966 const u8 *ie = mgmt->u.probe_req.variable;
2967 size_t ie_len = data->rx_mgmt.frame_len -
2968 (mgmt->u.probe_req.variable -
2969 data->rx_mgmt.frame);
2970
2971 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
2972 mgmt->bssid, ie, ie_len,
2973 data->rx_mgmt.ssi_signal);
2974 }
2975
2976 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2977 #endif /* CONFIG_AP */
2978 break;
2979 }
2980 #endif /* CONFIG_AP || CONFIG_IBSS_RSN */
2981 case EVENT_RX_ACTION:
2982 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2983 " Category=%u DataLen=%d freq=%d MHz",
2984 MAC2STR(data->rx_action.sa),
2985 data->rx_action.category, (int) data->rx_action.len,
2986 data->rx_action.freq);
2987 #ifdef CONFIG_IEEE80211R
2988 if (data->rx_action.category == WLAN_ACTION_FT) {
2989 ft_rx_action(wpa_s, data->rx_action.data,
2990 data->rx_action.len);
2991 break;
2992 }
2993 #endif /* CONFIG_IEEE80211R */
2994 #ifdef CONFIG_IEEE80211W
2995 #ifdef CONFIG_SME
2996 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2997 sme_sa_query_rx(wpa_s, data->rx_action.sa,
2998 data->rx_action.data,
2999 data->rx_action.len);
3000 break;
3001 }
3002 #endif /* CONFIG_SME */
3003 #endif /* CONFIG_IEEE80211W */
3004 #ifdef CONFIG_WNM
3005 if (data->rx_action.category == WLAN_ACTION_WNM) {
3006 ieee802_11_rx_wnm_action(wpa_s, &data->rx_action);
3007 break;
3008 }
3009 #endif /* CONFIG_WNM */
3010 #ifdef CONFIG_GAS
3011 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
3012 gas_query_rx(wpa_s->gas, data->rx_action.da,
3013 data->rx_action.sa, data->rx_action.bssid,
3014 data->rx_action.data, data->rx_action.len,
3015 data->rx_action.freq) == 0)
3016 break;
3017 #endif /* CONFIG_GAS */
3018 #ifdef CONFIG_TDLS
3019 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
3020 data->rx_action.len >= 4 &&
3021 data->rx_action.data[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
3022 wpa_dbg(wpa_s, MSG_DEBUG, "TDLS: Received Discovery "
3023 "Response from " MACSTR,
3024 MAC2STR(data->rx_action.sa));
3025 break;
3026 }
3027 #endif /* CONFIG_TDLS */
3028 #ifdef CONFIG_INTERWORKING
3029 if (data->rx_action.category == WLAN_ACTION_QOS &&
3030 data->rx_action.len >= 1 &&
3031 data->rx_action.data[0] == QOS_QOS_MAP_CONFIG) {
3032 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
3033 MACSTR, MAC2STR(data->rx_action.sa));
3034 if (os_memcmp(data->rx_action.sa, wpa_s->bssid, ETH_ALEN)
3035 == 0)
3036 wpas_qos_map_set(wpa_s, data->rx_action.data + 1,
3037 data->rx_action.len - 1);
3038 break;
3039 }
3040 #endif /* CONFIG_INTERWORKING */
3041 #ifdef CONFIG_P2P
3042 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
3043 data->rx_action.sa,
3044 data->rx_action.bssid,
3045 data->rx_action.category,
3046 data->rx_action.data,
3047 data->rx_action.len, data->rx_action.freq);
3048 #endif /* CONFIG_P2P */
3049 break;
3050 case EVENT_RX_PROBE_REQ:
3051 if (data->rx_probe_req.sa == NULL ||
3052 data->rx_probe_req.ie == NULL)
3053 break;
3054 #ifdef CONFIG_AP
3055 if (wpa_s->ap_iface) {
3056 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3057 data->rx_probe_req.sa,
3058 data->rx_probe_req.da,
3059 data->rx_probe_req.bssid,
3060 data->rx_probe_req.ie,
3061 data->rx_probe_req.ie_len,
3062 data->rx_probe_req.ssi_signal);
3063 break;
3064 }
3065 #endif /* CONFIG_AP */
3066 #ifdef CONFIG_P2P
3067 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3068 data->rx_probe_req.da,
3069 data->rx_probe_req.bssid,
3070 data->rx_probe_req.ie,
3071 data->rx_probe_req.ie_len,
3072 data->rx_probe_req.ssi_signal);
3073 #endif /* CONFIG_P2P */
3074 break;
3075 case EVENT_REMAIN_ON_CHANNEL:
3076 #ifdef CONFIG_OFFCHANNEL
3077 offchannel_remain_on_channel_cb(
3078 wpa_s, data->remain_on_channel.freq,
3079 data->remain_on_channel.duration);
3080 #endif /* CONFIG_OFFCHANNEL */
3081 #ifdef CONFIG_P2P
3082 wpas_p2p_remain_on_channel_cb(
3083 wpa_s, data->remain_on_channel.freq,
3084 data->remain_on_channel.duration);
3085 #endif /* CONFIG_P2P */
3086 break;
3087 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3088 #ifdef CONFIG_OFFCHANNEL
3089 offchannel_cancel_remain_on_channel_cb(
3090 wpa_s, data->remain_on_channel.freq);
3091 #endif /* CONFIG_OFFCHANNEL */
3092 #ifdef CONFIG_P2P
3093 wpas_p2p_cancel_remain_on_channel_cb(
3094 wpa_s, data->remain_on_channel.freq);
3095 #endif /* CONFIG_P2P */
3096 break;
3097 #ifdef CONFIG_P2P
3098 case EVENT_P2P_DEV_FOUND: {
3099 struct p2p_peer_info peer_info;
3100
3101 os_memset(&peer_info, 0, sizeof(peer_info));
3102 if (data->p2p_dev_found.dev_addr)
3103 os_memcpy(peer_info.p2p_device_addr,
3104 data->p2p_dev_found.dev_addr, ETH_ALEN);
3105 if (data->p2p_dev_found.pri_dev_type)
3106 os_memcpy(peer_info.pri_dev_type,
3107 data->p2p_dev_found.pri_dev_type,
3108 sizeof(peer_info.pri_dev_type));
3109 if (data->p2p_dev_found.dev_name)
3110 os_strlcpy(peer_info.device_name,
3111 data->p2p_dev_found.dev_name,
3112 sizeof(peer_info.device_name));
3113 peer_info.config_methods = data->p2p_dev_found.config_methods;
3114 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
3115 peer_info.group_capab = data->p2p_dev_found.group_capab;
3116
3117 /*
3118 * FIX: new_device=1 is not necessarily correct. We should
3119 * maintain a P2P peer database in wpa_supplicant and update
3120 * this information based on whether the peer is truly new.
3121 */
3122 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
3123 break;
3124 }
3125 case EVENT_P2P_GO_NEG_REQ_RX:
3126 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
3127 data->p2p_go_neg_req_rx.dev_passwd_id);
3128 break;
3129 case EVENT_P2P_GO_NEG_COMPLETED:
3130 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
3131 break;
3132 case EVENT_P2P_PROV_DISC_REQUEST:
3133 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
3134 data->p2p_prov_disc_req.config_methods,
3135 data->p2p_prov_disc_req.dev_addr,
3136 data->p2p_prov_disc_req.pri_dev_type,
3137 data->p2p_prov_disc_req.dev_name,
3138 data->p2p_prov_disc_req.supp_config_methods,
3139 data->p2p_prov_disc_req.dev_capab,
3140 data->p2p_prov_disc_req.group_capab,
3141 NULL, 0);
3142 break;
3143 case EVENT_P2P_PROV_DISC_RESPONSE:
3144 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
3145 data->p2p_prov_disc_resp.config_methods);
3146 break;
3147 case EVENT_P2P_SD_REQUEST:
3148 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
3149 data->p2p_sd_req.sa,
3150 data->p2p_sd_req.dialog_token,
3151 data->p2p_sd_req.update_indic,
3152 data->p2p_sd_req.tlvs,
3153 data->p2p_sd_req.tlvs_len);
3154 break;
3155 case EVENT_P2P_SD_RESPONSE:
3156 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
3157 data->p2p_sd_resp.update_indic,
3158 data->p2p_sd_resp.tlvs,
3159 data->p2p_sd_resp.tlvs_len);
3160 break;
3161 #endif /* CONFIG_P2P */
3162 case EVENT_EAPOL_RX:
3163 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3164 data->eapol_rx.data,
3165 data->eapol_rx.data_len);
3166 break;
3167 case EVENT_SIGNAL_CHANGE:
3168 bgscan_notify_signal_change(
3169 wpa_s, data->signal_change.above_threshold,
3170 data->signal_change.current_signal,
3171 data->signal_change.current_noise,
3172 data->signal_change.current_txrate);
3173 break;
3174 case EVENT_INTERFACE_ENABLED:
3175 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3176 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3177 wpa_supplicant_update_mac_addr(wpa_s);
3178 #ifdef CONFIG_AP
3179 if (!wpa_s->ap_iface) {
3180 wpa_supplicant_set_state(wpa_s,
3181 WPA_DISCONNECTED);
3182 wpa_supplicant_req_scan(wpa_s, 0, 0);
3183 } else
3184 wpa_supplicant_set_state(wpa_s,
3185 WPA_COMPLETED);
3186 #else /* CONFIG_AP */
3187 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3188 wpa_supplicant_req_scan(wpa_s, 0, 0);
3189 #endif /* CONFIG_AP */
3190 }
3191 break;
3192 case EVENT_INTERFACE_DISABLED:
3193 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3194 wpa_supplicant_mark_disassoc(wpa_s);
3195 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3196 break;
3197 case EVENT_CHANNEL_LIST_CHANGED:
3198 wpa_supplicant_update_channel_list(wpa_s);
3199 break;
3200 case EVENT_INTERFACE_UNAVAILABLE:
3201 #ifdef CONFIG_P2P
3202 wpas_p2p_interface_unavailable(wpa_s);
3203 #endif /* CONFIG_P2P */
3204 break;
3205 case EVENT_BEST_CHANNEL:
3206 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3207 "(%d %d %d)",
3208 data->best_chan.freq_24, data->best_chan.freq_5,
3209 data->best_chan.freq_overall);
3210 wpa_s->best_24_freq = data->best_chan.freq_24;
3211 wpa_s->best_5_freq = data->best_chan.freq_5;
3212 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3213 #ifdef CONFIG_P2P
3214 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3215 data->best_chan.freq_5,
3216 data->best_chan.freq_overall);
3217 #endif /* CONFIG_P2P */
3218 break;
3219 case EVENT_UNPROT_DEAUTH:
3220 wpa_supplicant_event_unprot_deauth(wpa_s,
3221 &data->unprot_deauth);
3222 break;
3223 case EVENT_UNPROT_DISASSOC:
3224 wpa_supplicant_event_unprot_disassoc(wpa_s,
3225 &data->unprot_disassoc);
3226 break;
3227 case EVENT_STATION_LOW_ACK:
3228 #ifdef CONFIG_AP
3229 if (wpa_s->ap_iface && data)
3230 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3231 data->low_ack.addr);
3232 #endif /* CONFIG_AP */
3233 #ifdef CONFIG_TDLS
3234 if (data)
3235 wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
3236 #endif /* CONFIG_TDLS */
3237 break;
3238 case EVENT_IBSS_PEER_LOST:
3239 #ifdef CONFIG_IBSS_RSN
3240 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3241 #endif /* CONFIG_IBSS_RSN */
3242 break;
3243 case EVENT_DRIVER_GTK_REKEY:
3244 if (os_memcmp(data->driver_gtk_rekey.bssid,
3245 wpa_s->bssid, ETH_ALEN))
3246 break;
3247 if (!wpa_s->wpa)
3248 break;
3249 wpa_sm_update_replay_ctr(wpa_s->wpa,
3250 data->driver_gtk_rekey.replay_ctr);
3251 break;
3252 case EVENT_SCHED_SCAN_STOPPED:
3253 wpa_s->sched_scanning = 0;
3254 wpa_supplicant_notify_scanning(wpa_s, 0);
3255
3256 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3257 break;
3258
3259 /*
3260 * If we timed out, start a new sched scan to continue
3261 * searching for more SSIDs.
3262 */
3263 if (wpa_s->sched_scan_timed_out)
3264 wpa_supplicant_req_sched_scan(wpa_s);
3265 break;
3266 case EVENT_WPS_BUTTON_PUSHED:
3267 #ifdef CONFIG_WPS
3268 wpas_wps_start_pbc(wpa_s, NULL, 0);
3269 #endif /* CONFIG_WPS */
3270 break;
3271 case EVENT_CONNECT_FAILED_REASON:
3272 #ifdef CONFIG_AP
3273 if (!wpa_s->ap_iface || !data)
3274 break;
3275 hostapd_event_connect_failed_reason(
3276 wpa_s->ap_iface->bss[0],
3277 data->connect_failed_reason.addr,
3278 data->connect_failed_reason.code);
3279 #endif /* CONFIG_AP */
3280 break;
3281 default:
3282 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3283 break;
3284 }
3285 }
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