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Send CTRL-EVENT-NETWORK-NOT-FOUND if no suitable network was found
[thirdparty/hostap.git] / wpa_supplicant / events.c
1 /*
2 * WPA Supplicant - Driver event processing
3 * Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "eapol_supp/eapol_supp_sm.h"
13 #include "rsn_supp/wpa.h"
14 #include "eloop.h"
15 #include "config.h"
16 #include "l2_packet/l2_packet.h"
17 #include "wpa_supplicant_i.h"
18 #include "driver_i.h"
19 #include "pcsc_funcs.h"
20 #include "rsn_supp/preauth.h"
21 #include "rsn_supp/pmksa_cache.h"
22 #include "common/wpa_ctrl.h"
23 #include "eap_peer/eap.h"
24 #include "ap/hostapd.h"
25 #include "p2p/p2p.h"
26 #include "wnm_sta.h"
27 #include "notify.h"
28 #include "common/ieee802_11_defs.h"
29 #include "common/ieee802_11_common.h"
30 #include "crypto/random.h"
31 #include "blacklist.h"
32 #include "wpas_glue.h"
33 #include "wps_supplicant.h"
34 #include "ibss_rsn.h"
35 #include "sme.h"
36 #include "gas_query.h"
37 #include "p2p_supplicant.h"
38 #include "bgscan.h"
39 #include "autoscan.h"
40 #include "ap.h"
41 #include "bss.h"
42 #include "scan.h"
43 #include "offchannel.h"
44 #include "interworking.h"
45 #include "mesh.h"
46 #include "mesh_mpm.h"
47 #include "wmm_ac.h"
48
49
50 #ifndef CONFIG_NO_SCAN_PROCESSING
51 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
52 int new_scan, int own_request);
53 #endif /* CONFIG_NO_SCAN_PROCESSING */
54
55
56 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
57 struct wpa_ssid *ssid)
58 {
59 struct os_reltime now;
60
61 if (ssid == NULL || ssid->disabled_until.sec == 0)
62 return 0;
63
64 os_get_reltime(&now);
65 if (ssid->disabled_until.sec > now.sec)
66 return ssid->disabled_until.sec - now.sec;
67
68 wpas_clear_temp_disabled(wpa_s, ssid, 0);
69
70 return 0;
71 }
72
73
74 /**
75 * wpas_reenabled_network_time - Time until first network is re-enabled
76 * @wpa_s: Pointer to wpa_supplicant data
77 * Returns: If all enabled networks are temporarily disabled, returns the time
78 * (in sec) until the first network is re-enabled. Otherwise returns 0.
79 *
80 * This function is used in case all enabled networks are temporarily disabled,
81 * in which case it returns the time (in sec) that the first network will be
82 * re-enabled. The function assumes that at least one network is enabled.
83 */
84 static int wpas_reenabled_network_time(struct wpa_supplicant *wpa_s)
85 {
86 struct wpa_ssid *ssid;
87 int disabled_for, res = 0;
88
89 #ifdef CONFIG_INTERWORKING
90 if (wpa_s->conf->auto_interworking && wpa_s->conf->interworking &&
91 wpa_s->conf->cred)
92 return 0;
93 #endif /* CONFIG_INTERWORKING */
94
95 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
96 if (ssid->disabled)
97 continue;
98
99 disabled_for = wpas_temp_disabled(wpa_s, ssid);
100 if (!disabled_for)
101 return 0;
102
103 if (!res || disabled_for < res)
104 res = disabled_for;
105 }
106
107 return res;
108 }
109
110
111 void wpas_network_reenabled(void *eloop_ctx, void *timeout_ctx)
112 {
113 struct wpa_supplicant *wpa_s = eloop_ctx;
114
115 if (wpa_s->disconnected || wpa_s->wpa_state != WPA_SCANNING)
116 return;
117
118 wpa_dbg(wpa_s, MSG_DEBUG,
119 "Try to associate due to network getting re-enabled");
120 if (wpa_supplicant_fast_associate(wpa_s) != 1) {
121 wpa_supplicant_cancel_sched_scan(wpa_s);
122 wpa_supplicant_req_scan(wpa_s, 0, 0);
123 }
124 }
125
126
127 static struct wpa_bss * wpa_supplicant_get_new_bss(
128 struct wpa_supplicant *wpa_s, const u8 *bssid)
129 {
130 struct wpa_bss *bss = NULL;
131 struct wpa_ssid *ssid = wpa_s->current_ssid;
132
133 if (ssid->ssid_len > 0)
134 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
135 if (!bss)
136 bss = wpa_bss_get_bssid(wpa_s, bssid);
137
138 return bss;
139 }
140
141
142 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
143 {
144 struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
145
146 if (!bss) {
147 wpa_supplicant_update_scan_results(wpa_s);
148
149 /* Get the BSS from the new scan results */
150 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
151 }
152
153 if (bss)
154 wpa_s->current_bss = bss;
155 }
156
157
158 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
159 {
160 struct wpa_ssid *ssid, *old_ssid;
161 u8 drv_ssid[SSID_MAX_LEN];
162 size_t drv_ssid_len;
163 int res;
164
165 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
166 wpa_supplicant_update_current_bss(wpa_s);
167
168 if (wpa_s->current_ssid->ssid_len == 0)
169 return 0; /* current profile still in use */
170 res = wpa_drv_get_ssid(wpa_s, drv_ssid);
171 if (res < 0) {
172 wpa_msg(wpa_s, MSG_INFO,
173 "Failed to read SSID from driver");
174 return 0; /* try to use current profile */
175 }
176 drv_ssid_len = res;
177
178 if (drv_ssid_len == wpa_s->current_ssid->ssid_len &&
179 os_memcmp(drv_ssid, wpa_s->current_ssid->ssid,
180 drv_ssid_len) == 0)
181 return 0; /* current profile still in use */
182
183 wpa_msg(wpa_s, MSG_DEBUG,
184 "Driver-initiated BSS selection changed the SSID to %s",
185 wpa_ssid_txt(drv_ssid, drv_ssid_len));
186 /* continue selecting a new network profile */
187 }
188
189 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
190 "information");
191 ssid = wpa_supplicant_get_ssid(wpa_s);
192 if (ssid == NULL) {
193 wpa_msg(wpa_s, MSG_INFO,
194 "No network configuration found for the current AP");
195 return -1;
196 }
197
198 if (wpas_network_disabled(wpa_s, ssid)) {
199 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
200 return -1;
201 }
202
203 if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
204 disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
205 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
206 return -1;
207 }
208
209 res = wpas_temp_disabled(wpa_s, ssid);
210 if (res > 0) {
211 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
212 "disabled for %d second(s)", res);
213 return -1;
214 }
215
216 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
217 "current AP");
218 if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
219 u8 wpa_ie[80];
220 size_t wpa_ie_len = sizeof(wpa_ie);
221 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
222 wpa_ie, &wpa_ie_len) < 0)
223 wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
224 } else {
225 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
226 }
227
228 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
229 eapol_sm_invalidate_cached_session(wpa_s->eapol);
230 old_ssid = wpa_s->current_ssid;
231 wpa_s->current_ssid = ssid;
232
233 wpa_supplicant_update_current_bss(wpa_s);
234
235 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
236 wpa_supplicant_initiate_eapol(wpa_s);
237 if (old_ssid != wpa_s->current_ssid)
238 wpas_notify_network_changed(wpa_s);
239
240 return 0;
241 }
242
243
244 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
245 {
246 struct wpa_supplicant *wpa_s = eloop_ctx;
247
248 if (wpa_s->countermeasures) {
249 wpa_s->countermeasures = 0;
250 wpa_drv_set_countermeasures(wpa_s, 0);
251 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
252
253 /*
254 * It is possible that the device is sched scanning, which means
255 * that a connection attempt will be done only when we receive
256 * scan results. However, in this case, it would be preferable
257 * to scan and connect immediately, so cancel the sched_scan and
258 * issue a regular scan flow.
259 */
260 wpa_supplicant_cancel_sched_scan(wpa_s);
261 wpa_supplicant_req_scan(wpa_s, 0, 0);
262 }
263 }
264
265
266 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
267 {
268 int bssid_changed;
269
270 wnm_bss_keep_alive_deinit(wpa_s);
271
272 #ifdef CONFIG_IBSS_RSN
273 ibss_rsn_deinit(wpa_s->ibss_rsn);
274 wpa_s->ibss_rsn = NULL;
275 #endif /* CONFIG_IBSS_RSN */
276
277 #ifdef CONFIG_AP
278 wpa_supplicant_ap_deinit(wpa_s);
279 #endif /* CONFIG_AP */
280
281 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
282 return;
283
284 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
285 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
286 os_memset(wpa_s->bssid, 0, ETH_ALEN);
287 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
288 sme_clear_on_disassoc(wpa_s);
289 #ifdef CONFIG_P2P
290 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
291 #endif /* CONFIG_P2P */
292 wpa_s->current_bss = NULL;
293 wpa_s->assoc_freq = 0;
294
295 if (bssid_changed)
296 wpas_notify_bssid_changed(wpa_s);
297
298 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
299 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
300 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
301 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
302 wpa_s->ap_ies_from_associnfo = 0;
303 wpa_s->current_ssid = NULL;
304 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
305 wpa_s->key_mgmt = 0;
306
307 wpas_rrm_reset(wpa_s);
308 }
309
310
311 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
312 {
313 struct wpa_ie_data ie;
314 int pmksa_set = -1;
315 size_t i;
316
317 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
318 ie.pmkid == NULL)
319 return;
320
321 for (i = 0; i < ie.num_pmkid; i++) {
322 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
323 ie.pmkid + i * PMKID_LEN,
324 NULL, NULL, 0);
325 if (pmksa_set == 0) {
326 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
327 break;
328 }
329 }
330
331 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
332 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
333 }
334
335
336 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
337 union wpa_event_data *data)
338 {
339 if (data == NULL) {
340 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
341 "event");
342 return;
343 }
344 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
345 " index=%d preauth=%d",
346 MAC2STR(data->pmkid_candidate.bssid),
347 data->pmkid_candidate.index,
348 data->pmkid_candidate.preauth);
349
350 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
351 data->pmkid_candidate.index,
352 data->pmkid_candidate.preauth);
353 }
354
355
356 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
357 {
358 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
359 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
360 return 0;
361
362 #ifdef IEEE8021X_EAPOL
363 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
364 wpa_s->current_ssid &&
365 !(wpa_s->current_ssid->eapol_flags &
366 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
367 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
368 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
369 * plaintext or static WEP keys). */
370 return 0;
371 }
372 #endif /* IEEE8021X_EAPOL */
373
374 return 1;
375 }
376
377
378 /**
379 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
380 * @wpa_s: pointer to wpa_supplicant data
381 * @ssid: Configuration data for the network
382 * Returns: 0 on success, -1 on failure
383 *
384 * This function is called when starting authentication with a network that is
385 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
386 */
387 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
388 struct wpa_ssid *ssid)
389 {
390 #ifdef IEEE8021X_EAPOL
391 #ifdef PCSC_FUNCS
392 int aka = 0, sim = 0;
393
394 if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
395 wpa_s->scard != NULL || wpa_s->conf->external_sim)
396 return 0;
397
398 if (ssid == NULL || ssid->eap.eap_methods == NULL) {
399 sim = 1;
400 aka = 1;
401 } else {
402 struct eap_method_type *eap = ssid->eap.eap_methods;
403 while (eap->vendor != EAP_VENDOR_IETF ||
404 eap->method != EAP_TYPE_NONE) {
405 if (eap->vendor == EAP_VENDOR_IETF) {
406 if (eap->method == EAP_TYPE_SIM)
407 sim = 1;
408 else if (eap->method == EAP_TYPE_AKA ||
409 eap->method == EAP_TYPE_AKA_PRIME)
410 aka = 1;
411 }
412 eap++;
413 }
414 }
415
416 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
417 sim = 0;
418 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
419 eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
420 NULL)
421 aka = 0;
422
423 if (!sim && !aka) {
424 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
425 "use SIM, but neither EAP-SIM nor EAP-AKA are "
426 "enabled");
427 return 0;
428 }
429
430 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
431 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
432
433 wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
434 if (wpa_s->scard == NULL) {
435 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
436 "(pcsc-lite)");
437 return -1;
438 }
439 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
440 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
441 #endif /* PCSC_FUNCS */
442 #endif /* IEEE8021X_EAPOL */
443
444 return 0;
445 }
446
447
448 #ifndef CONFIG_NO_SCAN_PROCESSING
449
450 static int has_wep_key(struct wpa_ssid *ssid)
451 {
452 int i;
453
454 for (i = 0; i < NUM_WEP_KEYS; i++) {
455 if (ssid->wep_key_len[i])
456 return 1;
457 }
458
459 return 0;
460 }
461
462
463 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
464 struct wpa_ssid *ssid)
465 {
466 int privacy = 0;
467
468 if (ssid->mixed_cell)
469 return 1;
470
471 #ifdef CONFIG_WPS
472 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
473 return 1;
474 #endif /* CONFIG_WPS */
475
476 if (has_wep_key(ssid))
477 privacy = 1;
478
479 #ifdef IEEE8021X_EAPOL
480 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
481 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
482 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
483 privacy = 1;
484 #endif /* IEEE8021X_EAPOL */
485
486 if (wpa_key_mgmt_wpa(ssid->key_mgmt))
487 privacy = 1;
488
489 if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
490 privacy = 1;
491
492 if (bss->caps & IEEE80211_CAP_PRIVACY)
493 return privacy;
494 return !privacy;
495 }
496
497
498 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
499 struct wpa_ssid *ssid,
500 struct wpa_bss *bss)
501 {
502 struct wpa_ie_data ie;
503 int proto_match = 0;
504 const u8 *rsn_ie, *wpa_ie;
505 int ret;
506 int wep_ok;
507
508 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
509 if (ret >= 0)
510 return ret;
511
512 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
513 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
514 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
515 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
516 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
517
518 rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
519 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
520 proto_match++;
521
522 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
523 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
524 "failed");
525 break;
526 }
527
528 if (wep_ok &&
529 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
530 {
531 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
532 "in RSN IE");
533 return 1;
534 }
535
536 if (!(ie.proto & ssid->proto)) {
537 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
538 "mismatch");
539 break;
540 }
541
542 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
543 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
544 "cipher mismatch");
545 break;
546 }
547
548 if (!(ie.group_cipher & ssid->group_cipher)) {
549 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
550 "cipher mismatch");
551 break;
552 }
553
554 if (!(ie.key_mgmt & ssid->key_mgmt)) {
555 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
556 "mismatch");
557 break;
558 }
559
560 #ifdef CONFIG_IEEE80211W
561 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
562 wpas_get_ssid_pmf(wpa_s, ssid) ==
563 MGMT_FRAME_PROTECTION_REQUIRED) {
564 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
565 "frame protection");
566 break;
567 }
568 #endif /* CONFIG_IEEE80211W */
569
570 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
571 return 1;
572 }
573
574 wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
575 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
576 proto_match++;
577
578 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
579 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
580 "failed");
581 break;
582 }
583
584 if (wep_ok &&
585 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
586 {
587 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
588 "in WPA IE");
589 return 1;
590 }
591
592 if (!(ie.proto & ssid->proto)) {
593 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
594 "mismatch");
595 break;
596 }
597
598 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
599 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
600 "cipher mismatch");
601 break;
602 }
603
604 if (!(ie.group_cipher & ssid->group_cipher)) {
605 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
606 "cipher mismatch");
607 break;
608 }
609
610 if (!(ie.key_mgmt & ssid->key_mgmt)) {
611 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
612 "mismatch");
613 break;
614 }
615
616 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
617 return 1;
618 }
619
620 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
621 !rsn_ie) {
622 wpa_dbg(wpa_s, MSG_DEBUG, " allow for non-WPA IEEE 802.1X");
623 return 1;
624 }
625
626 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
627 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
628 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
629 return 0;
630 }
631
632 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
633 wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
634 wpa_dbg(wpa_s, MSG_DEBUG, " allow in OSEN");
635 return 1;
636 }
637
638 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
639 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
640 return 1;
641 }
642
643 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with "
644 "WPA/WPA2");
645
646 return 0;
647 }
648
649
650 static int freq_allowed(int *freqs, int freq)
651 {
652 int i;
653
654 if (freqs == NULL)
655 return 1;
656
657 for (i = 0; freqs[i]; i++)
658 if (freqs[i] == freq)
659 return 1;
660 return 0;
661 }
662
663
664 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
665 {
666 const struct hostapd_hw_modes *mode = NULL, *modes;
667 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
668 const u8 *rate_ie;
669 int i, j, k;
670
671 if (bss->freq == 0)
672 return 1; /* Cannot do matching without knowing band */
673
674 modes = wpa_s->hw.modes;
675 if (modes == NULL) {
676 /*
677 * The driver does not provide any additional information
678 * about the utilized hardware, so allow the connection attempt
679 * to continue.
680 */
681 return 1;
682 }
683
684 for (i = 0; i < wpa_s->hw.num_modes; i++) {
685 for (j = 0; j < modes[i].num_channels; j++) {
686 int freq = modes[i].channels[j].freq;
687 if (freq == bss->freq) {
688 if (mode &&
689 mode->mode == HOSTAPD_MODE_IEEE80211G)
690 break; /* do not allow 802.11b replace
691 * 802.11g */
692 mode = &modes[i];
693 break;
694 }
695 }
696 }
697
698 if (mode == NULL)
699 return 0;
700
701 for (i = 0; i < (int) sizeof(scan_ie); i++) {
702 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
703 if (rate_ie == NULL)
704 continue;
705
706 for (j = 2; j < rate_ie[1] + 2; j++) {
707 int flagged = !!(rate_ie[j] & 0x80);
708 int r = (rate_ie[j] & 0x7f) * 5;
709
710 /*
711 * IEEE Std 802.11n-2009 7.3.2.2:
712 * The new BSS Membership selector value is encoded
713 * like a legacy basic rate, but it is not a rate and
714 * only indicates if the BSS members are required to
715 * support the mandatory features of Clause 20 [HT PHY]
716 * in order to join the BSS.
717 */
718 if (flagged && ((rate_ie[j] & 0x7f) ==
719 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
720 if (!ht_supported(mode)) {
721 wpa_dbg(wpa_s, MSG_DEBUG,
722 " hardware does not support "
723 "HT PHY");
724 return 0;
725 }
726 continue;
727 }
728
729 /* There's also a VHT selector for 802.11ac */
730 if (flagged && ((rate_ie[j] & 0x7f) ==
731 BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
732 if (!vht_supported(mode)) {
733 wpa_dbg(wpa_s, MSG_DEBUG,
734 " hardware does not support "
735 "VHT PHY");
736 return 0;
737 }
738 continue;
739 }
740
741 if (!flagged)
742 continue;
743
744 /* check for legacy basic rates */
745 for (k = 0; k < mode->num_rates; k++) {
746 if (mode->rates[k] == r)
747 break;
748 }
749 if (k == mode->num_rates) {
750 /*
751 * IEEE Std 802.11-2007 7.3.2.2 demands that in
752 * order to join a BSS all required rates
753 * have to be supported by the hardware.
754 */
755 wpa_dbg(wpa_s, MSG_DEBUG,
756 " hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)",
757 r / 10, r % 10,
758 bss->freq, mode->mode, mode->num_rates);
759 return 0;
760 }
761 }
762 }
763
764 return 1;
765 }
766
767
768 /*
769 * Test whether BSS is in an ESS.
770 * This is done differently in DMG (60 GHz) and non-DMG bands
771 */
772 static int bss_is_ess(struct wpa_bss *bss)
773 {
774 if (bss_is_dmg(bss)) {
775 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
776 IEEE80211_CAP_DMG_AP;
777 }
778
779 return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
780 IEEE80211_CAP_ESS);
781 }
782
783
784 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
785 {
786 size_t i;
787
788 for (i = 0; i < ETH_ALEN; i++) {
789 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
790 return 0;
791 }
792 return 1;
793 }
794
795
796 static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
797 {
798 size_t i;
799
800 for (i = 0; i < num; i++) {
801 const u8 *a = list + i * ETH_ALEN * 2;
802 const u8 *m = a + ETH_ALEN;
803
804 if (match_mac_mask(a, addr, m))
805 return 1;
806 }
807 return 0;
808 }
809
810
811 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
812 int i, struct wpa_bss *bss,
813 struct wpa_ssid *group,
814 int only_first_ssid)
815 {
816 u8 wpa_ie_len, rsn_ie_len;
817 int wpa;
818 struct wpa_blacklist *e;
819 const u8 *ie;
820 struct wpa_ssid *ssid;
821 int osen;
822
823 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
824 wpa_ie_len = ie ? ie[1] : 0;
825
826 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
827 rsn_ie_len = ie ? ie[1] : 0;
828
829 ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
830 osen = ie != NULL;
831
832 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
833 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
834 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
835 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
836 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
837 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
838 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
839 " p2p" : "",
840 osen ? " osen=1" : "");
841
842 e = wpa_blacklist_get(wpa_s, bss->bssid);
843 if (e) {
844 int limit = 1;
845 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
846 /*
847 * When only a single network is enabled, we can
848 * trigger blacklisting on the first failure. This
849 * should not be done with multiple enabled networks to
850 * avoid getting forced to move into a worse ESS on
851 * single error if there are no other BSSes of the
852 * current ESS.
853 */
854 limit = 0;
855 }
856 if (e->count > limit) {
857 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
858 "(count=%d limit=%d)", e->count, limit);
859 return NULL;
860 }
861 }
862
863 if (bss->ssid_len == 0) {
864 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
865 return NULL;
866 }
867
868 if (disallowed_bssid(wpa_s, bss->bssid)) {
869 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed");
870 return NULL;
871 }
872
873 if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
874 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed");
875 return NULL;
876 }
877
878 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
879
880 for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
881 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
882 int res;
883
884 if (wpas_network_disabled(wpa_s, ssid)) {
885 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
886 continue;
887 }
888
889 res = wpas_temp_disabled(wpa_s, ssid);
890 if (res > 0) {
891 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled "
892 "temporarily for %d second(s)", res);
893 continue;
894 }
895
896 #ifdef CONFIG_WPS
897 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
898 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
899 "(WPS)");
900 continue;
901 }
902
903 if (wpa && ssid->ssid_len == 0 &&
904 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
905 check_ssid = 0;
906
907 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
908 /* Only allow wildcard SSID match if an AP
909 * advertises active WPS operation that matches
910 * with our mode. */
911 check_ssid = 1;
912 if (ssid->ssid_len == 0 &&
913 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
914 check_ssid = 0;
915 }
916 #endif /* CONFIG_WPS */
917
918 if (ssid->bssid_set && ssid->ssid_len == 0 &&
919 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
920 check_ssid = 0;
921
922 if (check_ssid &&
923 (bss->ssid_len != ssid->ssid_len ||
924 os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
925 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
926 continue;
927 }
928
929 if (ssid->bssid_set &&
930 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
931 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
932 continue;
933 }
934
935 /* check blacklist */
936 if (ssid->num_bssid_blacklist &&
937 addr_in_list(bss->bssid, ssid->bssid_blacklist,
938 ssid->num_bssid_blacklist)) {
939 wpa_dbg(wpa_s, MSG_DEBUG,
940 " skip - BSSID blacklisted");
941 continue;
942 }
943
944 /* if there is a whitelist, only accept those APs */
945 if (ssid->num_bssid_whitelist &&
946 !addr_in_list(bss->bssid, ssid->bssid_whitelist,
947 ssid->num_bssid_whitelist)) {
948 wpa_dbg(wpa_s, MSG_DEBUG,
949 " skip - BSSID not in whitelist");
950 continue;
951 }
952
953 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
954 continue;
955
956 if (!osen && !wpa &&
957 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
958 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
959 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
960 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
961 "not allowed");
962 continue;
963 }
964
965 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
966 has_wep_key(ssid)) {
967 wpa_dbg(wpa_s, MSG_DEBUG, " skip - ignore WPA/WPA2 AP for WEP network block");
968 continue;
969 }
970
971 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
972 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-OSEN network "
973 "not allowed");
974 continue;
975 }
976
977 if (!wpa_supplicant_match_privacy(bss, ssid)) {
978 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
979 "mismatch");
980 continue;
981 }
982
983 if (!bss_is_ess(bss)) {
984 wpa_dbg(wpa_s, MSG_DEBUG, " skip - not ESS network");
985 continue;
986 }
987
988 if (!freq_allowed(ssid->freq_list, bss->freq)) {
989 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
990 "allowed");
991 continue;
992 }
993
994 if (!rate_match(wpa_s, bss)) {
995 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do "
996 "not match");
997 continue;
998 }
999
1000 #ifdef CONFIG_P2P
1001 if (ssid->p2p_group &&
1002 !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
1003 !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
1004 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P IE seen");
1005 continue;
1006 }
1007
1008 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
1009 struct wpabuf *p2p_ie;
1010 u8 dev_addr[ETH_ALEN];
1011
1012 ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
1013 if (ie == NULL) {
1014 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P element");
1015 continue;
1016 }
1017 p2p_ie = wpa_bss_get_vendor_ie_multi(
1018 bss, P2P_IE_VENDOR_TYPE);
1019 if (p2p_ie == NULL) {
1020 wpa_dbg(wpa_s, MSG_DEBUG, " skip - could not fetch P2P element");
1021 continue;
1022 }
1023
1024 if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
1025 || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
1026 ETH_ALEN) != 0) {
1027 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no matching GO P2P Device Address in P2P element");
1028 wpabuf_free(p2p_ie);
1029 continue;
1030 }
1031 wpabuf_free(p2p_ie);
1032 }
1033
1034 /*
1035 * TODO: skip the AP if its P2P IE has Group Formation
1036 * bit set in the P2P Group Capability Bitmap and we
1037 * are not in Group Formation with that device.
1038 */
1039 #endif /* CONFIG_P2P */
1040
1041 /* Matching configuration found */
1042 return ssid;
1043 }
1044
1045 /* No matching configuration found */
1046 return NULL;
1047 }
1048
1049
1050 static struct wpa_bss *
1051 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
1052 struct wpa_ssid *group,
1053 struct wpa_ssid **selected_ssid,
1054 int only_first_ssid)
1055 {
1056 unsigned int i;
1057
1058 if (only_first_ssid)
1059 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
1060 group->id);
1061 else
1062 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
1063 group->priority);
1064
1065 for (i = 0; i < wpa_s->last_scan_res_used; i++) {
1066 struct wpa_bss *bss = wpa_s->last_scan_res[i];
1067 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
1068 only_first_ssid);
1069 if (!*selected_ssid)
1070 continue;
1071 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
1072 " ssid='%s'",
1073 MAC2STR(bss->bssid),
1074 wpa_ssid_txt(bss->ssid, bss->ssid_len));
1075 return bss;
1076 }
1077
1078 return NULL;
1079 }
1080
1081
1082 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1083 struct wpa_ssid **selected_ssid)
1084 {
1085 struct wpa_bss *selected = NULL;
1086 int prio;
1087 struct wpa_ssid *next_ssid = NULL;
1088 struct wpa_ssid *ssid;
1089
1090 if (wpa_s->last_scan_res == NULL ||
1091 wpa_s->last_scan_res_used == 0)
1092 return NULL; /* no scan results from last update */
1093
1094 if (wpa_s->next_ssid) {
1095 /* check that next_ssid is still valid */
1096 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1097 if (ssid == wpa_s->next_ssid)
1098 break;
1099 }
1100 next_ssid = ssid;
1101 wpa_s->next_ssid = NULL;
1102 }
1103
1104 while (selected == NULL) {
1105 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1106 if (next_ssid && next_ssid->priority ==
1107 wpa_s->conf->pssid[prio]->priority) {
1108 selected = wpa_supplicant_select_bss(
1109 wpa_s, next_ssid, selected_ssid, 1);
1110 if (selected)
1111 break;
1112 }
1113 selected = wpa_supplicant_select_bss(
1114 wpa_s, wpa_s->conf->pssid[prio],
1115 selected_ssid, 0);
1116 if (selected)
1117 break;
1118 }
1119
1120 if (selected == NULL && wpa_s->blacklist &&
1121 !wpa_s->countermeasures) {
1122 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1123 "blacklist and try again");
1124 wpa_blacklist_clear(wpa_s);
1125 wpa_s->blacklist_cleared++;
1126 } else if (selected == NULL)
1127 break;
1128 }
1129
1130 ssid = *selected_ssid;
1131 if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set &&
1132 !ssid->passphrase && !ssid->ext_psk) {
1133 const char *field_name, *txt = NULL;
1134
1135 wpa_dbg(wpa_s, MSG_DEBUG,
1136 "PSK/passphrase not yet available for the selected network");
1137
1138 wpas_notify_network_request(wpa_s, ssid,
1139 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL);
1140
1141 field_name = wpa_supplicant_ctrl_req_to_string(
1142 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt);
1143 if (field_name == NULL)
1144 return NULL;
1145
1146 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
1147
1148 selected = NULL;
1149 }
1150
1151 return selected;
1152 }
1153
1154
1155 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1156 int timeout_sec, int timeout_usec)
1157 {
1158 if (!wpa_supplicant_enabled_networks(wpa_s)) {
1159 /*
1160 * No networks are enabled; short-circuit request so
1161 * we don't wait timeout seconds before transitioning
1162 * to INACTIVE state.
1163 */
1164 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1165 "since there are no enabled networks");
1166 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1167 return;
1168 }
1169
1170 wpa_s->scan_for_connection = 1;
1171 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1172 }
1173
1174
1175 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1176 struct wpa_bss *selected,
1177 struct wpa_ssid *ssid)
1178 {
1179 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1180 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1181 "PBC session overlap");
1182 wpas_notify_wps_event_pbc_overlap(wpa_s);
1183 #ifdef CONFIG_P2P
1184 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1185 wpa_s->p2p_in_provisioning) {
1186 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1187 wpa_s, NULL);
1188 return -1;
1189 }
1190 #endif /* CONFIG_P2P */
1191
1192 #ifdef CONFIG_WPS
1193 wpas_wps_cancel(wpa_s);
1194 #endif /* CONFIG_WPS */
1195 return -1;
1196 }
1197
1198 wpa_msg(wpa_s, MSG_DEBUG,
1199 "Considering connect request: reassociate: %d selected: "
1200 MACSTR " bssid: " MACSTR " pending: " MACSTR
1201 " wpa_state: %s ssid=%p current_ssid=%p",
1202 wpa_s->reassociate, MAC2STR(selected->bssid),
1203 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1204 wpa_supplicant_state_txt(wpa_s->wpa_state),
1205 ssid, wpa_s->current_ssid);
1206
1207 /*
1208 * Do not trigger new association unless the BSSID has changed or if
1209 * reassociation is requested. If we are in process of associating with
1210 * the selected BSSID, do not trigger new attempt.
1211 */
1212 if (wpa_s->reassociate ||
1213 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1214 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1215 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1216 (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1217 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1218 0) ||
1219 (is_zero_ether_addr(wpa_s->pending_bssid) &&
1220 ssid != wpa_s->current_ssid)))) {
1221 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1222 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1223 return 0;
1224 }
1225 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1226 MAC2STR(selected->bssid));
1227 wpa_supplicant_associate(wpa_s, selected, ssid);
1228 } else {
1229 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1230 "connect with the selected AP");
1231 }
1232
1233 return 0;
1234 }
1235
1236
1237 static struct wpa_ssid *
1238 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1239 {
1240 int prio;
1241 struct wpa_ssid *ssid;
1242
1243 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1244 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1245 {
1246 if (wpas_network_disabled(wpa_s, ssid))
1247 continue;
1248 if (ssid->mode == IEEE80211_MODE_IBSS ||
1249 ssid->mode == IEEE80211_MODE_AP ||
1250 ssid->mode == IEEE80211_MODE_MESH)
1251 return ssid;
1252 }
1253 }
1254 return NULL;
1255 }
1256
1257
1258 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1259 * on BSS added and BSS changed events */
1260 static void wpa_supplicant_rsn_preauth_scan_results(
1261 struct wpa_supplicant *wpa_s)
1262 {
1263 struct wpa_bss *bss;
1264
1265 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1266 return;
1267
1268 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1269 const u8 *ssid, *rsn;
1270
1271 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1272 if (ssid == NULL)
1273 continue;
1274
1275 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1276 if (rsn == NULL)
1277 continue;
1278
1279 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1280 }
1281
1282 }
1283
1284
1285 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1286 struct wpa_bss *selected,
1287 struct wpa_ssid *ssid)
1288 {
1289 struct wpa_bss *current_bss = NULL;
1290 #ifndef CONFIG_NO_ROAMING
1291 int min_diff;
1292 #endif /* CONFIG_NO_ROAMING */
1293
1294 if (wpa_s->reassociate)
1295 return 1; /* explicit request to reassociate */
1296 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1297 return 1; /* we are not associated; continue */
1298 if (wpa_s->current_ssid == NULL)
1299 return 1; /* unknown current SSID */
1300 if (wpa_s->current_ssid != ssid)
1301 return 1; /* different network block */
1302
1303 if (wpas_driver_bss_selection(wpa_s))
1304 return 0; /* Driver-based roaming */
1305
1306 if (wpa_s->current_ssid->ssid)
1307 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1308 wpa_s->current_ssid->ssid,
1309 wpa_s->current_ssid->ssid_len);
1310 if (!current_bss)
1311 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1312
1313 if (!current_bss)
1314 return 1; /* current BSS not seen in scan results */
1315
1316 if (current_bss == selected)
1317 return 0;
1318
1319 if (selected->last_update_idx > current_bss->last_update_idx)
1320 return 1; /* current BSS not seen in the last scan */
1321
1322 #ifndef CONFIG_NO_ROAMING
1323 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1324 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1325 " level=%d snr=%d est_throughput=%u",
1326 MAC2STR(current_bss->bssid), current_bss->level,
1327 current_bss->snr, current_bss->est_throughput);
1328 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1329 " level=%d snr=%d est_throughput=%u",
1330 MAC2STR(selected->bssid), selected->level,
1331 selected->snr, selected->est_throughput);
1332
1333 if (wpa_s->current_ssid->bssid_set &&
1334 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1335 0) {
1336 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1337 "has preferred BSSID");
1338 return 1;
1339 }
1340
1341 if (selected->est_throughput > current_bss->est_throughput + 5000) {
1342 wpa_dbg(wpa_s, MSG_DEBUG,
1343 "Allow reassociation - selected BSS has better estimated throughput");
1344 return 1;
1345 }
1346
1347 if (current_bss->level < 0 && current_bss->level > selected->level) {
1348 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1349 "signal level");
1350 return 0;
1351 }
1352
1353 min_diff = 2;
1354 if (current_bss->level < 0) {
1355 if (current_bss->level < -85)
1356 min_diff = 1;
1357 else if (current_bss->level < -80)
1358 min_diff = 2;
1359 else if (current_bss->level < -75)
1360 min_diff = 3;
1361 else if (current_bss->level < -70)
1362 min_diff = 4;
1363 else
1364 min_diff = 5;
1365 }
1366 if (abs(current_bss->level - selected->level) < min_diff) {
1367 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1368 "in signal level");
1369 return 0;
1370 }
1371
1372 return 1;
1373 #else /* CONFIG_NO_ROAMING */
1374 return 0;
1375 #endif /* CONFIG_NO_ROAMING */
1376 }
1377
1378
1379 /* Return != 0 if no scan results could be fetched or if scan results should not
1380 * be shared with other virtual interfaces. */
1381 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1382 union wpa_event_data *data,
1383 int own_request)
1384 {
1385 struct wpa_scan_results *scan_res = NULL;
1386 int ret = 0;
1387 int ap = 0;
1388 #ifndef CONFIG_NO_RANDOM_POOL
1389 size_t i, num;
1390 #endif /* CONFIG_NO_RANDOM_POOL */
1391
1392 #ifdef CONFIG_AP
1393 if (wpa_s->ap_iface)
1394 ap = 1;
1395 #endif /* CONFIG_AP */
1396
1397 wpa_supplicant_notify_scanning(wpa_s, 0);
1398
1399 scan_res = wpa_supplicant_get_scan_results(wpa_s,
1400 data ? &data->scan_info :
1401 NULL, 1);
1402 if (scan_res == NULL) {
1403 if (wpa_s->conf->ap_scan == 2 || ap ||
1404 wpa_s->scan_res_handler == scan_only_handler)
1405 return -1;
1406 if (!own_request)
1407 return -1;
1408 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1409 "scanning again");
1410 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1411 ret = -1;
1412 goto scan_work_done;
1413 }
1414
1415 #ifndef CONFIG_NO_RANDOM_POOL
1416 num = scan_res->num;
1417 if (num > 10)
1418 num = 10;
1419 for (i = 0; i < num; i++) {
1420 u8 buf[5];
1421 struct wpa_scan_res *res = scan_res->res[i];
1422 buf[0] = res->bssid[5];
1423 buf[1] = res->qual & 0xff;
1424 buf[2] = res->noise & 0xff;
1425 buf[3] = res->level & 0xff;
1426 buf[4] = res->tsf & 0xff;
1427 random_add_randomness(buf, sizeof(buf));
1428 }
1429 #endif /* CONFIG_NO_RANDOM_POOL */
1430
1431 if (own_request && wpa_s->scan_res_handler &&
1432 (wpa_s->own_scan_running || !wpa_s->radio->external_scan_running)) {
1433 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1434 struct wpa_scan_results *scan_res);
1435
1436 scan_res_handler = wpa_s->scan_res_handler;
1437 wpa_s->scan_res_handler = NULL;
1438 scan_res_handler(wpa_s, scan_res);
1439 ret = -2;
1440 goto scan_work_done;
1441 }
1442
1443 if (ap) {
1444 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1445 #ifdef CONFIG_AP
1446 if (wpa_s->ap_iface->scan_cb)
1447 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1448 #endif /* CONFIG_AP */
1449 goto scan_work_done;
1450 }
1451
1452 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1453 wpa_s->own_scan_running, wpa_s->radio->external_scan_running);
1454 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1455 wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1456 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1457 wpa_s->manual_scan_id);
1458 wpa_s->manual_scan_use_id = 0;
1459 } else {
1460 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1461 }
1462 wpas_notify_scan_results(wpa_s);
1463
1464 wpas_notify_scan_done(wpa_s, 1);
1465
1466 if (!wpa_s->own_scan_running && wpa_s->radio->external_scan_running) {
1467 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1468 wpa_scan_results_free(scan_res);
1469 return 0;
1470 }
1471
1472 if (wnm_scan_process(wpa_s, 1) > 0)
1473 goto scan_work_done;
1474
1475 if (sme_proc_obss_scan(wpa_s) > 0)
1476 goto scan_work_done;
1477
1478 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1479 goto scan_work_done;
1480
1481 if (autoscan_notify_scan(wpa_s, scan_res))
1482 goto scan_work_done;
1483
1484 if (wpa_s->disconnected) {
1485 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1486 goto scan_work_done;
1487 }
1488
1489 if (!wpas_driver_bss_selection(wpa_s) &&
1490 bgscan_notify_scan(wpa_s, scan_res) == 1)
1491 goto scan_work_done;
1492
1493 wpas_wps_update_ap_info(wpa_s, scan_res);
1494
1495 wpa_scan_results_free(scan_res);
1496
1497 if (wpa_s->scan_work) {
1498 struct wpa_radio_work *work = wpa_s->scan_work;
1499 wpa_s->scan_work = NULL;
1500 radio_work_done(work);
1501 }
1502
1503 return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1504
1505 scan_work_done:
1506 wpa_scan_results_free(scan_res);
1507 if (wpa_s->scan_work) {
1508 struct wpa_radio_work *work = wpa_s->scan_work;
1509 wpa_s->scan_work = NULL;
1510 radio_work_done(work);
1511 }
1512 return ret;
1513 }
1514
1515
1516 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1517 int new_scan, int own_request)
1518 {
1519 struct wpa_bss *selected;
1520 struct wpa_ssid *ssid = NULL;
1521 int time_to_reenable = wpas_reenabled_network_time(wpa_s);
1522
1523 if (time_to_reenable > 0) {
1524 wpa_dbg(wpa_s, MSG_DEBUG,
1525 "Postpone network selection by %d seconds since all networks are disabled",
1526 time_to_reenable);
1527 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
1528 eloop_register_timeout(time_to_reenable, 0,
1529 wpas_network_reenabled, wpa_s, NULL);
1530 return 0;
1531 }
1532
1533 if (wpa_s->p2p_mgmt)
1534 return 0; /* no normal connection on p2p_mgmt interface */
1535
1536 selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1537
1538 if (selected) {
1539 int skip;
1540 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1541 if (skip) {
1542 if (new_scan)
1543 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1544 return 0;
1545 }
1546
1547 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1548 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1549 return -1;
1550 }
1551 if (new_scan)
1552 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1553 /*
1554 * Do not notify other virtual radios of scan results since we do not
1555 * want them to start other associations at the same time.
1556 */
1557 return 1;
1558 } else {
1559 #ifdef CONFIG_MESH
1560 if (wpa_s->ifmsh) {
1561 wpa_msg(wpa_s, MSG_INFO,
1562 "Avoiding join because we already joined a mesh group");
1563 return 0;
1564 }
1565 #endif /* CONFIG_MESH */
1566 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1567 ssid = wpa_supplicant_pick_new_network(wpa_s);
1568 if (ssid) {
1569 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1570 wpa_supplicant_associate(wpa_s, NULL, ssid);
1571 if (new_scan)
1572 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1573 } else if (own_request) {
1574 /*
1575 * No SSID found. If SCAN results are as a result of
1576 * own scan request and not due to a scan request on
1577 * another shared interface, try another scan.
1578 */
1579 int timeout_sec = wpa_s->scan_interval;
1580 int timeout_usec = 0;
1581 #ifdef CONFIG_P2P
1582 int res;
1583
1584 res = wpas_p2p_scan_no_go_seen(wpa_s);
1585 if (res == 2)
1586 return 2;
1587 if (res == 1)
1588 return 0;
1589
1590 if (wpa_s->p2p_in_provisioning ||
1591 wpa_s->show_group_started ||
1592 wpa_s->p2p_in_invitation) {
1593 /*
1594 * Use shorter wait during P2P Provisioning
1595 * state and during P2P join-a-group operation
1596 * to speed up group formation.
1597 */
1598 timeout_sec = 0;
1599 timeout_usec = 250000;
1600 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1601 timeout_usec);
1602 return 0;
1603 }
1604 #endif /* CONFIG_P2P */
1605 #ifdef CONFIG_INTERWORKING
1606 if (wpa_s->conf->auto_interworking &&
1607 wpa_s->conf->interworking &&
1608 wpa_s->conf->cred) {
1609 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1610 "start ANQP fetch since no matching "
1611 "networks found");
1612 wpa_s->network_select = 1;
1613 wpa_s->auto_network_select = 1;
1614 interworking_start_fetch_anqp(wpa_s);
1615 return 1;
1616 }
1617 #endif /* CONFIG_INTERWORKING */
1618 #ifdef CONFIG_WPS
1619 if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1620 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1621 timeout_sec = 0;
1622 timeout_usec = 500000;
1623 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1624 timeout_usec);
1625 return 0;
1626 }
1627 #endif /* CONFIG_WPS */
1628 if (wpa_supplicant_req_sched_scan(wpa_s))
1629 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1630 timeout_usec);
1631
1632 wpa_msg_ctrl(wpa_s, MSG_INFO,
1633 WPA_EVENT_NETWORK_NOT_FOUND);
1634 }
1635 }
1636 return 0;
1637 }
1638
1639
1640 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1641 union wpa_event_data *data)
1642 {
1643 struct wpa_supplicant *ifs;
1644 int res;
1645
1646 res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1647 if (res == 2) {
1648 /*
1649 * Interface may have been removed, so must not dereference
1650 * wpa_s after this.
1651 */
1652 return 1;
1653 }
1654 if (res != 0) {
1655 /*
1656 * If no scan results could be fetched, then no need to
1657 * notify those interfaces that did not actually request
1658 * this scan. Similarly, if scan results started a new operation on this
1659 * interface, do not notify other interfaces to avoid concurrent
1660 * operations during a connection attempt.
1661 */
1662 return 0;
1663 }
1664
1665 /*
1666 * Check other interfaces to see if they share the same radio. If
1667 * so, they get updated with this same scan info.
1668 */
1669 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1670 radio_list) {
1671 if (ifs != wpa_s) {
1672 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1673 "sibling", ifs->ifname);
1674 _wpa_supplicant_event_scan_results(ifs, data, 0);
1675 }
1676 }
1677
1678 return 0;
1679 }
1680
1681 #endif /* CONFIG_NO_SCAN_PROCESSING */
1682
1683
1684 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1685 {
1686 #ifdef CONFIG_NO_SCAN_PROCESSING
1687 return -1;
1688 #else /* CONFIG_NO_SCAN_PROCESSING */
1689 struct os_reltime now;
1690
1691 if (wpa_s->last_scan_res_used == 0)
1692 return -1;
1693
1694 os_get_reltime(&now);
1695 if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1696 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1697 return -1;
1698 }
1699
1700 return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1701 #endif /* CONFIG_NO_SCAN_PROCESSING */
1702 }
1703
1704 #ifdef CONFIG_WNM
1705
1706 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1707 {
1708 struct wpa_supplicant *wpa_s = eloop_ctx;
1709
1710 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1711 return;
1712
1713 if (!wpa_s->no_keep_alive) {
1714 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1715 MAC2STR(wpa_s->bssid));
1716 /* TODO: could skip this if normal data traffic has been sent */
1717 /* TODO: Consider using some more appropriate data frame for
1718 * this */
1719 if (wpa_s->l2)
1720 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1721 (u8 *) "", 0);
1722 }
1723
1724 #ifdef CONFIG_SME
1725 if (wpa_s->sme.bss_max_idle_period) {
1726 unsigned int msec;
1727 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1728 if (msec > 100)
1729 msec -= 100;
1730 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1731 wnm_bss_keep_alive, wpa_s, NULL);
1732 }
1733 #endif /* CONFIG_SME */
1734 }
1735
1736
1737 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1738 const u8 *ies, size_t ies_len)
1739 {
1740 struct ieee802_11_elems elems;
1741
1742 if (ies == NULL)
1743 return;
1744
1745 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1746 return;
1747
1748 #ifdef CONFIG_SME
1749 if (elems.bss_max_idle_period) {
1750 unsigned int msec;
1751 wpa_s->sme.bss_max_idle_period =
1752 WPA_GET_LE16(elems.bss_max_idle_period);
1753 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1754 "TU)%s", wpa_s->sme.bss_max_idle_period,
1755 (elems.bss_max_idle_period[2] & 0x01) ?
1756 " (protected keep-live required)" : "");
1757 if (wpa_s->sme.bss_max_idle_period == 0)
1758 wpa_s->sme.bss_max_idle_period = 1;
1759 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1760 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1761 /* msec times 1000 */
1762 msec = wpa_s->sme.bss_max_idle_period * 1024;
1763 if (msec > 100)
1764 msec -= 100;
1765 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1766 wnm_bss_keep_alive, wpa_s,
1767 NULL);
1768 }
1769 }
1770 #endif /* CONFIG_SME */
1771 }
1772
1773 #endif /* CONFIG_WNM */
1774
1775
1776 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1777 {
1778 #ifdef CONFIG_WNM
1779 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1780 #endif /* CONFIG_WNM */
1781 }
1782
1783
1784 #ifdef CONFIG_INTERWORKING
1785
1786 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1787 size_t len)
1788 {
1789 int res;
1790
1791 wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1792 res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1793 if (res) {
1794 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1795 }
1796
1797 return res;
1798 }
1799
1800
1801 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1802 const u8 *ies, size_t ies_len)
1803 {
1804 struct ieee802_11_elems elems;
1805
1806 if (ies == NULL)
1807 return;
1808
1809 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1810 return;
1811
1812 if (elems.qos_map_set) {
1813 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1814 elems.qos_map_set_len);
1815 }
1816 }
1817
1818 #endif /* CONFIG_INTERWORKING */
1819
1820
1821 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1822 union wpa_event_data *data)
1823 {
1824 int l, len, found = 0, wpa_found, rsn_found;
1825 const u8 *p;
1826 #ifdef CONFIG_IEEE80211R
1827 u8 bssid[ETH_ALEN];
1828 #endif /* CONFIG_IEEE80211R */
1829
1830 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1831 if (data->assoc_info.req_ies)
1832 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1833 data->assoc_info.req_ies_len);
1834 if (data->assoc_info.resp_ies) {
1835 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1836 data->assoc_info.resp_ies_len);
1837 #ifdef CONFIG_TDLS
1838 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1839 data->assoc_info.resp_ies_len);
1840 #endif /* CONFIG_TDLS */
1841 #ifdef CONFIG_WNM
1842 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1843 data->assoc_info.resp_ies_len);
1844 #endif /* CONFIG_WNM */
1845 #ifdef CONFIG_INTERWORKING
1846 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1847 data->assoc_info.resp_ies_len);
1848 #endif /* CONFIG_INTERWORKING */
1849 }
1850 if (data->assoc_info.beacon_ies)
1851 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1852 data->assoc_info.beacon_ies,
1853 data->assoc_info.beacon_ies_len);
1854 if (data->assoc_info.freq)
1855 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1856 data->assoc_info.freq);
1857
1858 p = data->assoc_info.req_ies;
1859 l = data->assoc_info.req_ies_len;
1860
1861 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1862 while (p && l >= 2) {
1863 len = p[1] + 2;
1864 if (len > l) {
1865 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1866 p, l);
1867 break;
1868 }
1869 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1870 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1871 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1872 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1873 break;
1874 found = 1;
1875 wpa_find_assoc_pmkid(wpa_s);
1876 break;
1877 }
1878 l -= len;
1879 p += len;
1880 }
1881 if (!found && data->assoc_info.req_ies)
1882 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1883
1884 #ifdef CONFIG_IEEE80211R
1885 #ifdef CONFIG_SME
1886 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1887 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1888 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1889 data->assoc_info.resp_ies,
1890 data->assoc_info.resp_ies_len,
1891 bssid) < 0) {
1892 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1893 "Reassociation Response failed");
1894 wpa_supplicant_deauthenticate(
1895 wpa_s, WLAN_REASON_INVALID_IE);
1896 return -1;
1897 }
1898 }
1899
1900 p = data->assoc_info.resp_ies;
1901 l = data->assoc_info.resp_ies_len;
1902
1903 #ifdef CONFIG_WPS_STRICT
1904 if (p && wpa_s->current_ssid &&
1905 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1906 struct wpabuf *wps;
1907 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1908 if (wps == NULL) {
1909 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1910 "include WPS IE in (Re)Association Response");
1911 return -1;
1912 }
1913
1914 if (wps_validate_assoc_resp(wps) < 0) {
1915 wpabuf_free(wps);
1916 wpa_supplicant_deauthenticate(
1917 wpa_s, WLAN_REASON_INVALID_IE);
1918 return -1;
1919 }
1920 wpabuf_free(wps);
1921 }
1922 #endif /* CONFIG_WPS_STRICT */
1923
1924 /* Go through the IEs and make a copy of the MDIE, if present. */
1925 while (p && l >= 2) {
1926 len = p[1] + 2;
1927 if (len > l) {
1928 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1929 p, l);
1930 break;
1931 }
1932 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1933 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1934 wpa_s->sme.ft_used = 1;
1935 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1936 MOBILITY_DOMAIN_ID_LEN);
1937 break;
1938 }
1939 l -= len;
1940 p += len;
1941 }
1942 #endif /* CONFIG_SME */
1943
1944 /* Process FT when SME is in the driver */
1945 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1946 wpa_ft_is_completed(wpa_s->wpa)) {
1947 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1948 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1949 data->assoc_info.resp_ies,
1950 data->assoc_info.resp_ies_len,
1951 bssid) < 0) {
1952 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1953 "Reassociation Response failed");
1954 wpa_supplicant_deauthenticate(
1955 wpa_s, WLAN_REASON_INVALID_IE);
1956 return -1;
1957 }
1958 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1959 }
1960
1961 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1962 data->assoc_info.resp_ies_len);
1963 #endif /* CONFIG_IEEE80211R */
1964
1965 /* WPA/RSN IE from Beacon/ProbeResp */
1966 p = data->assoc_info.beacon_ies;
1967 l = data->assoc_info.beacon_ies_len;
1968
1969 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1970 */
1971 wpa_found = rsn_found = 0;
1972 while (p && l >= 2) {
1973 len = p[1] + 2;
1974 if (len > l) {
1975 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1976 p, l);
1977 break;
1978 }
1979 if (!wpa_found &&
1980 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1981 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1982 wpa_found = 1;
1983 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1984 }
1985
1986 if (!rsn_found &&
1987 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1988 rsn_found = 1;
1989 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1990 }
1991
1992 l -= len;
1993 p += len;
1994 }
1995
1996 if (!wpa_found && data->assoc_info.beacon_ies)
1997 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1998 if (!rsn_found && data->assoc_info.beacon_ies)
1999 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
2000 if (wpa_found || rsn_found)
2001 wpa_s->ap_ies_from_associnfo = 1;
2002
2003 if (wpa_s->assoc_freq && data->assoc_info.freq &&
2004 wpa_s->assoc_freq != data->assoc_info.freq) {
2005 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
2006 "%u to %u MHz",
2007 wpa_s->assoc_freq, data->assoc_info.freq);
2008 wpa_supplicant_update_scan_results(wpa_s);
2009 }
2010
2011 wpa_s->assoc_freq = data->assoc_info.freq;
2012
2013 return 0;
2014 }
2015
2016
2017 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
2018 {
2019 const u8 *bss_wpa = NULL, *bss_rsn = NULL;
2020
2021 if (!wpa_s->current_bss || !wpa_s->current_ssid)
2022 return -1;
2023
2024 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
2025 return 0;
2026
2027 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
2028 WPA_IE_VENDOR_TYPE);
2029 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
2030
2031 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
2032 bss_wpa ? 2 + bss_wpa[1] : 0) ||
2033 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
2034 bss_rsn ? 2 + bss_rsn[1] : 0))
2035 return -1;
2036
2037 return 0;
2038 }
2039
2040
2041 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
2042 union wpa_event_data *data)
2043 {
2044 u8 bssid[ETH_ALEN];
2045 int ft_completed;
2046
2047 #ifdef CONFIG_AP
2048 if (wpa_s->ap_iface) {
2049 if (!data)
2050 return;
2051 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
2052 data->assoc_info.addr,
2053 data->assoc_info.req_ies,
2054 data->assoc_info.req_ies_len,
2055 data->assoc_info.reassoc);
2056 return;
2057 }
2058 #endif /* CONFIG_AP */
2059
2060 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
2061
2062 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
2063 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
2064 return;
2065
2066 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
2067 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
2068 wpa_supplicant_deauthenticate(
2069 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2070 return;
2071 }
2072
2073 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
2074 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
2075 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
2076 MACSTR, MAC2STR(bssid));
2077 random_add_randomness(bssid, ETH_ALEN);
2078 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
2079 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2080 wpas_notify_bssid_changed(wpa_s);
2081
2082 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
2083 wpa_clear_keys(wpa_s, bssid);
2084 }
2085 if (wpa_supplicant_select_config(wpa_s) < 0) {
2086 wpa_supplicant_deauthenticate(
2087 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2088 return;
2089 }
2090
2091 if (wpa_s->conf->ap_scan == 1 &&
2092 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
2093 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
2094 wpa_msg(wpa_s, MSG_WARNING,
2095 "WPA/RSN IEs not updated");
2096 }
2097 }
2098
2099 #ifdef CONFIG_SME
2100 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
2101 wpa_s->sme.prev_bssid_set = 1;
2102 wpa_s->sme.last_unprot_disconnect.sec = 0;
2103 #endif /* CONFIG_SME */
2104
2105 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
2106 if (wpa_s->current_ssid) {
2107 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
2108 * initialized before association, but for other modes,
2109 * initialize PC/SC here, if the current configuration needs
2110 * smartcard or SIM/USIM. */
2111 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
2112 }
2113 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
2114 if (wpa_s->l2)
2115 l2_packet_notify_auth_start(wpa_s->l2);
2116
2117 /*
2118 * Set portEnabled first to FALSE in order to get EAP state machine out
2119 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2120 * state machine may transit to AUTHENTICATING state based on obsolete
2121 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2122 * AUTHENTICATED without ever giving chance to EAP state machine to
2123 * reset the state.
2124 */
2125 if (!ft_completed) {
2126 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2127 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2128 }
2129 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2130 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2131 /* 802.1X::portControl = Auto */
2132 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2133 wpa_s->eapol_received = 0;
2134 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2135 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2136 (wpa_s->current_ssid &&
2137 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2138 if (wpa_s->current_ssid &&
2139 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2140 (wpa_s->drv_flags &
2141 WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2142 /*
2143 * Set the key after having received joined-IBSS event
2144 * from the driver.
2145 */
2146 wpa_supplicant_set_wpa_none_key(wpa_s,
2147 wpa_s->current_ssid);
2148 }
2149 wpa_supplicant_cancel_auth_timeout(wpa_s);
2150 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2151 } else if (!ft_completed) {
2152 /* Timeout for receiving the first EAPOL packet */
2153 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2154 }
2155 wpa_supplicant_cancel_scan(wpa_s);
2156
2157 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2158 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2159 /*
2160 * We are done; the driver will take care of RSN 4-way
2161 * handshake.
2162 */
2163 wpa_supplicant_cancel_auth_timeout(wpa_s);
2164 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2165 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2166 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2167 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2168 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2169 /*
2170 * The driver will take care of RSN 4-way handshake, so we need
2171 * to allow EAPOL supplicant to complete its work without
2172 * waiting for WPA supplicant.
2173 */
2174 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2175 } else if (ft_completed) {
2176 /*
2177 * FT protocol completed - make sure EAPOL state machine ends
2178 * up in authenticated.
2179 */
2180 wpa_supplicant_cancel_auth_timeout(wpa_s);
2181 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2182 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2183 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2184 }
2185
2186 wpa_s->last_eapol_matches_bssid = 0;
2187
2188 if (wpa_s->pending_eapol_rx) {
2189 struct os_reltime now, age;
2190 os_get_reltime(&now);
2191 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2192 if (age.sec == 0 && age.usec < 100000 &&
2193 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2194 0) {
2195 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2196 "frame that was received just before "
2197 "association notification");
2198 wpa_supplicant_rx_eapol(
2199 wpa_s, wpa_s->pending_eapol_rx_src,
2200 wpabuf_head(wpa_s->pending_eapol_rx),
2201 wpabuf_len(wpa_s->pending_eapol_rx));
2202 }
2203 wpabuf_free(wpa_s->pending_eapol_rx);
2204 wpa_s->pending_eapol_rx = NULL;
2205 }
2206
2207 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2208 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2209 wpa_s->current_ssid &&
2210 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2211 /* Set static WEP keys again */
2212 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2213 }
2214
2215 #ifdef CONFIG_IBSS_RSN
2216 if (wpa_s->current_ssid &&
2217 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2218 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2219 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2220 wpa_s->ibss_rsn == NULL) {
2221 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2222 if (!wpa_s->ibss_rsn) {
2223 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2224 wpa_supplicant_deauthenticate(
2225 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2226 return;
2227 }
2228
2229 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2230 }
2231 #endif /* CONFIG_IBSS_RSN */
2232
2233 wpas_wps_notify_assoc(wpa_s, bssid);
2234
2235 if (data) {
2236 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2237 data->assoc_info.resp_ies_len,
2238 &data->assoc_info.wmm_params);
2239
2240 if (wpa_s->reassoc_same_bss)
2241 wmm_ac_restore_tspecs(wpa_s);
2242 }
2243 }
2244
2245
2246 static int disconnect_reason_recoverable(u16 reason_code)
2247 {
2248 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2249 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2250 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2251 }
2252
2253
2254 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2255 u16 reason_code,
2256 int locally_generated)
2257 {
2258 const u8 *bssid;
2259
2260 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2261 /*
2262 * At least Host AP driver and a Prism3 card seemed to be
2263 * generating streams of disconnected events when configuring
2264 * IBSS for WPA-None. Ignore them for now.
2265 */
2266 return;
2267 }
2268
2269 bssid = wpa_s->bssid;
2270 if (is_zero_ether_addr(bssid))
2271 bssid = wpa_s->pending_bssid;
2272
2273 if (!is_zero_ether_addr(bssid) ||
2274 wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2275 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2276 " reason=%d%s",
2277 MAC2STR(bssid), reason_code,
2278 locally_generated ? " locally_generated=1" : "");
2279 }
2280 }
2281
2282
2283 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2284 int locally_generated)
2285 {
2286 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2287 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2288 return 0; /* Not in 4-way handshake with PSK */
2289
2290 /*
2291 * It looks like connection was lost while trying to go through PSK
2292 * 4-way handshake. Filter out known disconnection cases that are caused
2293 * by something else than PSK mismatch to avoid confusing reports.
2294 */
2295
2296 if (locally_generated) {
2297 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2298 return 0;
2299 }
2300
2301 return 1;
2302 }
2303
2304
2305 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2306 u16 reason_code,
2307 int locally_generated)
2308 {
2309 const u8 *bssid;
2310 int authenticating;
2311 u8 prev_pending_bssid[ETH_ALEN];
2312 struct wpa_bss *fast_reconnect = NULL;
2313 struct wpa_ssid *fast_reconnect_ssid = NULL;
2314 struct wpa_ssid *last_ssid;
2315
2316 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2317 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2318
2319 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2320 /*
2321 * At least Host AP driver and a Prism3 card seemed to be
2322 * generating streams of disconnected events when configuring
2323 * IBSS for WPA-None. Ignore them for now.
2324 */
2325 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2326 "IBSS/WPA-None mode");
2327 return;
2328 }
2329
2330 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2331 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2332 "pre-shared key may be incorrect");
2333 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2334 return; /* P2P group removed */
2335 wpas_auth_failed(wpa_s, "WRONG_KEY");
2336 }
2337 if (!wpa_s->disconnected &&
2338 (!wpa_s->auto_reconnect_disabled ||
2339 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2340 wpas_wps_searching(wpa_s))) {
2341 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2342 "reconnect (wps=%d/%d wpa_state=%d)",
2343 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2344 wpas_wps_searching(wpa_s),
2345 wpa_s->wpa_state);
2346 if (wpa_s->wpa_state == WPA_COMPLETED &&
2347 wpa_s->current_ssid &&
2348 wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2349 !locally_generated &&
2350 disconnect_reason_recoverable(reason_code)) {
2351 /*
2352 * It looks like the AP has dropped association with
2353 * us, but could allow us to get back in. Try to
2354 * reconnect to the same BSS without full scan to save
2355 * time for some common cases.
2356 */
2357 fast_reconnect = wpa_s->current_bss;
2358 fast_reconnect_ssid = wpa_s->current_ssid;
2359 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2360 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2361 else
2362 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2363 "immediate scan");
2364 } else {
2365 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2366 "try to re-connect");
2367 wpa_s->reassociate = 0;
2368 wpa_s->disconnected = 1;
2369 wpa_supplicant_cancel_sched_scan(wpa_s);
2370 }
2371 bssid = wpa_s->bssid;
2372 if (is_zero_ether_addr(bssid))
2373 bssid = wpa_s->pending_bssid;
2374 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2375 wpas_connection_failed(wpa_s, bssid);
2376 wpa_sm_notify_disassoc(wpa_s->wpa);
2377 if (locally_generated)
2378 wpa_s->disconnect_reason = -reason_code;
2379 else
2380 wpa_s->disconnect_reason = reason_code;
2381 wpas_notify_disconnect_reason(wpa_s);
2382 if (wpa_supplicant_dynamic_keys(wpa_s)) {
2383 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2384 wpa_clear_keys(wpa_s, wpa_s->bssid);
2385 }
2386 last_ssid = wpa_s->current_ssid;
2387 wpa_supplicant_mark_disassoc(wpa_s);
2388
2389 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2390 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2391 wpa_s->current_ssid = last_ssid;
2392 }
2393
2394 if (fast_reconnect &&
2395 !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2396 !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2397 !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2398 fast_reconnect->ssid_len) &&
2399 !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2400 #ifndef CONFIG_NO_SCAN_PROCESSING
2401 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2402 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2403 fast_reconnect_ssid) < 0) {
2404 /* Recover through full scan */
2405 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2406 }
2407 #endif /* CONFIG_NO_SCAN_PROCESSING */
2408 } else if (fast_reconnect) {
2409 /*
2410 * Could not reconnect to the same BSS due to network being
2411 * disabled. Use a new scan to match the alternative behavior
2412 * above, i.e., to continue automatic reconnection attempt in a
2413 * way that enforces disabled network rules.
2414 */
2415 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2416 }
2417 }
2418
2419
2420 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2421 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2422 {
2423 struct wpa_supplicant *wpa_s = eloop_ctx;
2424
2425 if (!wpa_s->pending_mic_error_report)
2426 return;
2427
2428 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2429 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2430 wpa_s->pending_mic_error_report = 0;
2431 }
2432 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2433
2434
2435 static void
2436 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2437 union wpa_event_data *data)
2438 {
2439 int pairwise;
2440 struct os_reltime t;
2441
2442 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2443 pairwise = (data && data->michael_mic_failure.unicast);
2444 os_get_reltime(&t);
2445 if ((wpa_s->last_michael_mic_error.sec &&
2446 !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2447 wpa_s->pending_mic_error_report) {
2448 if (wpa_s->pending_mic_error_report) {
2449 /*
2450 * Send the pending MIC error report immediately since
2451 * we are going to start countermeasures and AP better
2452 * do the same.
2453 */
2454 wpa_sm_key_request(wpa_s->wpa, 1,
2455 wpa_s->pending_mic_error_pairwise);
2456 }
2457
2458 /* Send the new MIC error report immediately since we are going
2459 * to start countermeasures and AP better do the same.
2460 */
2461 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2462
2463 /* initialize countermeasures */
2464 wpa_s->countermeasures = 1;
2465
2466 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2467
2468 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2469
2470 /*
2471 * Need to wait for completion of request frame. We do not get
2472 * any callback for the message completion, so just wait a
2473 * short while and hope for the best. */
2474 os_sleep(0, 10000);
2475
2476 wpa_drv_set_countermeasures(wpa_s, 1);
2477 wpa_supplicant_deauthenticate(wpa_s,
2478 WLAN_REASON_MICHAEL_MIC_FAILURE);
2479 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2480 wpa_s, NULL);
2481 eloop_register_timeout(60, 0,
2482 wpa_supplicant_stop_countermeasures,
2483 wpa_s, NULL);
2484 /* TODO: mark the AP rejected for 60 second. STA is
2485 * allowed to associate with another AP.. */
2486 } else {
2487 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2488 if (wpa_s->mic_errors_seen) {
2489 /*
2490 * Reduce the effectiveness of Michael MIC error
2491 * reports as a means for attacking against TKIP if
2492 * more than one MIC failure is noticed with the same
2493 * PTK. We delay the transmission of the reports by a
2494 * random time between 0 and 60 seconds in order to
2495 * force the attacker wait 60 seconds before getting
2496 * the information on whether a frame resulted in a MIC
2497 * failure.
2498 */
2499 u8 rval[4];
2500 int sec;
2501
2502 if (os_get_random(rval, sizeof(rval)) < 0)
2503 sec = os_random() % 60;
2504 else
2505 sec = WPA_GET_BE32(rval) % 60;
2506 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2507 "report %d seconds", sec);
2508 wpa_s->pending_mic_error_report = 1;
2509 wpa_s->pending_mic_error_pairwise = pairwise;
2510 eloop_cancel_timeout(
2511 wpa_supplicant_delayed_mic_error_report,
2512 wpa_s, NULL);
2513 eloop_register_timeout(
2514 sec, os_random() % 1000000,
2515 wpa_supplicant_delayed_mic_error_report,
2516 wpa_s, NULL);
2517 } else {
2518 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2519 }
2520 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2521 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2522 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2523 }
2524 wpa_s->last_michael_mic_error = t;
2525 wpa_s->mic_errors_seen++;
2526 }
2527
2528
2529 #ifdef CONFIG_TERMINATE_ONLASTIF
2530 static int any_interfaces(struct wpa_supplicant *head)
2531 {
2532 struct wpa_supplicant *wpa_s;
2533
2534 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2535 if (!wpa_s->interface_removed)
2536 return 1;
2537 return 0;
2538 }
2539 #endif /* CONFIG_TERMINATE_ONLASTIF */
2540
2541
2542 static void
2543 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2544 union wpa_event_data *data)
2545 {
2546 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2547 return;
2548
2549 switch (data->interface_status.ievent) {
2550 case EVENT_INTERFACE_ADDED:
2551 if (!wpa_s->interface_removed)
2552 break;
2553 wpa_s->interface_removed = 0;
2554 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2555 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2556 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2557 "driver after interface was added");
2558 }
2559
2560 #ifdef CONFIG_P2P
2561 if (!wpa_s->global->p2p &&
2562 !wpa_s->global->p2p_disabled &&
2563 !wpa_s->conf->p2p_disabled &&
2564 (wpa_s->drv_flags &
2565 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
2566 wpas_p2p_add_p2pdev_interface(
2567 wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) {
2568 wpa_printf(MSG_INFO,
2569 "P2P: Failed to enable P2P Device interface");
2570 /* Try to continue without. P2P will be disabled. */
2571 }
2572 #endif /* CONFIG_P2P */
2573
2574 break;
2575 case EVENT_INTERFACE_REMOVED:
2576 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2577 wpa_s->interface_removed = 1;
2578 wpa_supplicant_mark_disassoc(wpa_s);
2579 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2580 l2_packet_deinit(wpa_s->l2);
2581 wpa_s->l2 = NULL;
2582
2583 #ifdef CONFIG_P2P
2584 if (wpa_s->global->p2p &&
2585 wpa_s->global->p2p_init_wpa_s->parent == wpa_s &&
2586 (wpa_s->drv_flags &
2587 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) {
2588 wpa_dbg(wpa_s, MSG_DEBUG,
2589 "Removing P2P Device interface");
2590 wpa_supplicant_remove_iface(
2591 wpa_s->global, wpa_s->global->p2p_init_wpa_s,
2592 0);
2593 wpa_s->global->p2p_init_wpa_s = NULL;
2594 }
2595 #endif /* CONFIG_P2P */
2596
2597 #ifdef CONFIG_TERMINATE_ONLASTIF
2598 /* check if last interface */
2599 if (!any_interfaces(wpa_s->global->ifaces))
2600 eloop_terminate();
2601 #endif /* CONFIG_TERMINATE_ONLASTIF */
2602 break;
2603 }
2604 }
2605
2606
2607 #ifdef CONFIG_PEERKEY
2608 static void
2609 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2610 union wpa_event_data *data)
2611 {
2612 if (data == NULL)
2613 return;
2614 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2615 }
2616 #endif /* CONFIG_PEERKEY */
2617
2618
2619 #ifdef CONFIG_TDLS
2620 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2621 union wpa_event_data *data)
2622 {
2623 if (data == NULL)
2624 return;
2625 switch (data->tdls.oper) {
2626 case TDLS_REQUEST_SETUP:
2627 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2628 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2629 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2630 else
2631 wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2632 break;
2633 case TDLS_REQUEST_TEARDOWN:
2634 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2635 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2636 data->tdls.reason_code);
2637 else
2638 wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2639 data->tdls.peer);
2640 break;
2641 case TDLS_REQUEST_DISCOVER:
2642 wpa_tdls_send_discovery_request(wpa_s->wpa,
2643 data->tdls.peer);
2644 break;
2645 }
2646 }
2647 #endif /* CONFIG_TDLS */
2648
2649
2650 #ifdef CONFIG_WNM
2651 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2652 union wpa_event_data *data)
2653 {
2654 if (data == NULL)
2655 return;
2656 switch (data->wnm.oper) {
2657 case WNM_OPER_SLEEP:
2658 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2659 "(action=%d, intval=%d)",
2660 data->wnm.sleep_action, data->wnm.sleep_intval);
2661 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2662 data->wnm.sleep_intval, NULL);
2663 break;
2664 }
2665 }
2666 #endif /* CONFIG_WNM */
2667
2668
2669 #ifdef CONFIG_IEEE80211R
2670 static void
2671 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2672 union wpa_event_data *data)
2673 {
2674 if (data == NULL)
2675 return;
2676
2677 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2678 data->ft_ies.ies_len,
2679 data->ft_ies.ft_action,
2680 data->ft_ies.target_ap,
2681 data->ft_ies.ric_ies,
2682 data->ft_ies.ric_ies_len) < 0) {
2683 /* TODO: prevent MLME/driver from trying to associate? */
2684 }
2685 }
2686 #endif /* CONFIG_IEEE80211R */
2687
2688
2689 #ifdef CONFIG_IBSS_RSN
2690 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2691 union wpa_event_data *data)
2692 {
2693 struct wpa_ssid *ssid;
2694 if (wpa_s->wpa_state < WPA_ASSOCIATED)
2695 return;
2696 if (data == NULL)
2697 return;
2698 ssid = wpa_s->current_ssid;
2699 if (ssid == NULL)
2700 return;
2701 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2702 return;
2703
2704 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2705 }
2706
2707
2708 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2709 union wpa_event_data *data)
2710 {
2711 struct wpa_ssid *ssid = wpa_s->current_ssid;
2712
2713 if (ssid == NULL)
2714 return;
2715
2716 /* check if the ssid is correctly configured as IBSS/RSN */
2717 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2718 return;
2719
2720 ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2721 data->rx_mgmt.frame_len);
2722 }
2723 #endif /* CONFIG_IBSS_RSN */
2724
2725
2726 #ifdef CONFIG_IEEE80211R
2727 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2728 size_t len)
2729 {
2730 const u8 *sta_addr, *target_ap_addr;
2731 u16 status;
2732
2733 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2734 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2735 return; /* only SME case supported for now */
2736 if (len < 1 + 2 * ETH_ALEN + 2)
2737 return;
2738 if (data[0] != 2)
2739 return; /* Only FT Action Response is supported for now */
2740 sta_addr = data + 1;
2741 target_ap_addr = data + 1 + ETH_ALEN;
2742 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2743 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2744 MACSTR " TargetAP " MACSTR " status %u",
2745 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2746
2747 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2748 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2749 " in FT Action Response", MAC2STR(sta_addr));
2750 return;
2751 }
2752
2753 if (status) {
2754 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2755 "failure (status code %d)", status);
2756 /* TODO: report error to FT code(?) */
2757 return;
2758 }
2759
2760 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2761 len - (1 + 2 * ETH_ALEN + 2), 1,
2762 target_ap_addr, NULL, 0) < 0)
2763 return;
2764
2765 #ifdef CONFIG_SME
2766 {
2767 struct wpa_bss *bss;
2768 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2769 if (bss)
2770 wpa_s->sme.freq = bss->freq;
2771 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2772 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2773 WLAN_AUTH_FT);
2774 }
2775 #endif /* CONFIG_SME */
2776 }
2777 #endif /* CONFIG_IEEE80211R */
2778
2779
2780 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2781 struct unprot_deauth *e)
2782 {
2783 #ifdef CONFIG_IEEE80211W
2784 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2785 "dropped: " MACSTR " -> " MACSTR
2786 " (reason code %u)",
2787 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2788 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2789 #endif /* CONFIG_IEEE80211W */
2790 }
2791
2792
2793 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2794 struct unprot_disassoc *e)
2795 {
2796 #ifdef CONFIG_IEEE80211W
2797 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2798 "dropped: " MACSTR " -> " MACSTR
2799 " (reason code %u)",
2800 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2801 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2802 #endif /* CONFIG_IEEE80211W */
2803 }
2804
2805
2806 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2807 u16 reason_code, int locally_generated,
2808 const u8 *ie, size_t ie_len, int deauth)
2809 {
2810 #ifdef CONFIG_AP
2811 if (wpa_s->ap_iface && addr) {
2812 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2813 return;
2814 }
2815
2816 if (wpa_s->ap_iface) {
2817 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2818 return;
2819 }
2820 #endif /* CONFIG_AP */
2821
2822 if (!locally_generated)
2823 wpa_s->own_disconnect_req = 0;
2824
2825 wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2826
2827 if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2828 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2829 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2830 eapol_sm_failed(wpa_s->eapol))) &&
2831 !wpa_s->eap_expected_failure))
2832 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2833
2834 #ifdef CONFIG_P2P
2835 if (deauth && reason_code > 0) {
2836 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2837 locally_generated) > 0) {
2838 /*
2839 * The interface was removed, so cannot continue
2840 * processing any additional operations after this.
2841 */
2842 return;
2843 }
2844 }
2845 #endif /* CONFIG_P2P */
2846
2847 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2848 locally_generated);
2849 }
2850
2851
2852 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2853 struct disassoc_info *info)
2854 {
2855 u16 reason_code = 0;
2856 int locally_generated = 0;
2857 const u8 *addr = NULL;
2858 const u8 *ie = NULL;
2859 size_t ie_len = 0;
2860
2861 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2862
2863 if (info) {
2864 addr = info->addr;
2865 ie = info->ie;
2866 ie_len = info->ie_len;
2867 reason_code = info->reason_code;
2868 locally_generated = info->locally_generated;
2869 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2870 locally_generated ? " (locally generated)" : "");
2871 if (addr)
2872 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2873 MAC2STR(addr));
2874 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2875 ie, ie_len);
2876 }
2877
2878 #ifdef CONFIG_AP
2879 if (wpa_s->ap_iface && info && info->addr) {
2880 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2881 return;
2882 }
2883
2884 if (wpa_s->ap_iface) {
2885 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2886 return;
2887 }
2888 #endif /* CONFIG_AP */
2889
2890 #ifdef CONFIG_P2P
2891 if (info) {
2892 wpas_p2p_disassoc_notif(
2893 wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2894 locally_generated);
2895 }
2896 #endif /* CONFIG_P2P */
2897
2898 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2899 sme_event_disassoc(wpa_s, info);
2900
2901 wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2902 ie, ie_len, 0);
2903 }
2904
2905
2906 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2907 struct deauth_info *info)
2908 {
2909 u16 reason_code = 0;
2910 int locally_generated = 0;
2911 const u8 *addr = NULL;
2912 const u8 *ie = NULL;
2913 size_t ie_len = 0;
2914
2915 wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2916
2917 if (info) {
2918 addr = info->addr;
2919 ie = info->ie;
2920 ie_len = info->ie_len;
2921 reason_code = info->reason_code;
2922 locally_generated = info->locally_generated;
2923 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2924 reason_code,
2925 locally_generated ? " (locally generated)" : "");
2926 if (addr) {
2927 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2928 MAC2STR(addr));
2929 }
2930 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2931 ie, ie_len);
2932 }
2933
2934 wpa_reset_ft_completed(wpa_s->wpa);
2935
2936 wpas_event_disconnect(wpa_s, addr, reason_code,
2937 locally_generated, ie, ie_len, 1);
2938 }
2939
2940
2941 static const char * reg_init_str(enum reg_change_initiator init)
2942 {
2943 switch (init) {
2944 case REGDOM_SET_BY_CORE:
2945 return "CORE";
2946 case REGDOM_SET_BY_USER:
2947 return "USER";
2948 case REGDOM_SET_BY_DRIVER:
2949 return "DRIVER";
2950 case REGDOM_SET_BY_COUNTRY_IE:
2951 return "COUNTRY_IE";
2952 case REGDOM_BEACON_HINT:
2953 return "BEACON_HINT";
2954 }
2955 return "?";
2956 }
2957
2958
2959 static const char * reg_type_str(enum reg_type type)
2960 {
2961 switch (type) {
2962 case REGDOM_TYPE_UNKNOWN:
2963 return "UNKNOWN";
2964 case REGDOM_TYPE_COUNTRY:
2965 return "COUNTRY";
2966 case REGDOM_TYPE_WORLD:
2967 return "WORLD";
2968 case REGDOM_TYPE_CUSTOM_WORLD:
2969 return "CUSTOM_WORLD";
2970 case REGDOM_TYPE_INTERSECTION:
2971 return "INTERSECTION";
2972 }
2973 return "?";
2974 }
2975
2976
2977 static void wpa_supplicant_update_channel_list(
2978 struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2979 {
2980 struct wpa_supplicant *ifs;
2981
2982 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2983 reg_init_str(info->initiator), reg_type_str(info->type),
2984 info->alpha2[0] ? " alpha2=" : "",
2985 info->alpha2[0] ? info->alpha2 : "");
2986
2987 if (wpa_s->drv_priv == NULL)
2988 return; /* Ignore event during drv initialization */
2989
2990 free_hw_features(wpa_s);
2991 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2992 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2993
2994 wpas_p2p_update_channel_list(wpa_s);
2995
2996 /*
2997 * Check other interfaces to see if they share the same radio. If
2998 * so, they get updated with this same hw mode info.
2999 */
3000 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
3001 radio_list) {
3002 if (ifs != wpa_s) {
3003 wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
3004 ifs->ifname);
3005 free_hw_features(ifs);
3006 ifs->hw.modes = wpa_drv_get_hw_feature_data(
3007 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
3008 }
3009 }
3010
3011 /* Restart sched_scan with updated channel list */
3012 if (wpa_s->sched_scanning) {
3013 wpa_dbg(wpa_s, MSG_DEBUG,
3014 "Channel list changed restart sched scan.");
3015 wpa_supplicant_cancel_sched_scan(wpa_s);
3016 wpa_supplicant_req_scan(wpa_s, 0, 0);
3017 }
3018 }
3019
3020
3021 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
3022 const u8 *frame, size_t len, int freq,
3023 int rssi)
3024 {
3025 const struct ieee80211_mgmt *mgmt;
3026 const u8 *payload;
3027 size_t plen;
3028 u8 category;
3029
3030 if (len < IEEE80211_HDRLEN + 2)
3031 return;
3032
3033 mgmt = (const struct ieee80211_mgmt *) frame;
3034 payload = frame + IEEE80211_HDRLEN;
3035 category = *payload++;
3036 plen = len - IEEE80211_HDRLEN - 1;
3037
3038 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
3039 " Category=%u DataLen=%d freq=%d MHz",
3040 MAC2STR(mgmt->sa), category, (int) plen, freq);
3041
3042 if (category == WLAN_ACTION_WMM) {
3043 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
3044 return;
3045 }
3046
3047 #ifdef CONFIG_IEEE80211R
3048 if (category == WLAN_ACTION_FT) {
3049 ft_rx_action(wpa_s, payload, plen);
3050 return;
3051 }
3052 #endif /* CONFIG_IEEE80211R */
3053
3054 #ifdef CONFIG_IEEE80211W
3055 #ifdef CONFIG_SME
3056 if (category == WLAN_ACTION_SA_QUERY) {
3057 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
3058 return;
3059 }
3060 #endif /* CONFIG_SME */
3061 #endif /* CONFIG_IEEE80211W */
3062
3063 #ifdef CONFIG_WNM
3064 if (mgmt->u.action.category == WLAN_ACTION_WNM) {
3065 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
3066 return;
3067 }
3068 #endif /* CONFIG_WNM */
3069
3070 #ifdef CONFIG_GAS
3071 if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
3072 mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
3073 gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
3074 mgmt->u.action.category,
3075 payload, plen, freq) == 0)
3076 return;
3077 #endif /* CONFIG_GAS */
3078
3079 #ifdef CONFIG_TDLS
3080 if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
3081 payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
3082 wpa_dbg(wpa_s, MSG_DEBUG,
3083 "TDLS: Received Discovery Response from " MACSTR,
3084 MAC2STR(mgmt->sa));
3085 return;
3086 }
3087 #endif /* CONFIG_TDLS */
3088
3089 #ifdef CONFIG_INTERWORKING
3090 if (category == WLAN_ACTION_QOS && plen >= 1 &&
3091 payload[0] == QOS_QOS_MAP_CONFIG) {
3092 const u8 *pos = payload + 1;
3093 size_t qlen = plen - 1;
3094 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
3095 MACSTR, MAC2STR(mgmt->sa));
3096 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
3097 qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
3098 pos[1] <= qlen - 2 && pos[1] >= 16)
3099 wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
3100 return;
3101 }
3102 #endif /* CONFIG_INTERWORKING */
3103
3104 if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3105 payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
3106 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
3107 return;
3108 }
3109
3110 if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3111 payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
3112 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
3113 payload + 1, plen - 1,
3114 rssi);
3115 return;
3116 }
3117
3118 wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
3119 category, payload, plen, freq);
3120 if (wpa_s->ifmsh)
3121 mesh_mpm_action_rx(wpa_s, mgmt, len);
3122 }
3123
3124
3125 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
3126 union wpa_event_data *event)
3127 {
3128 #ifdef CONFIG_P2P
3129 struct wpa_supplicant *ifs;
3130 #endif /* CONFIG_P2P */
3131 struct wpa_freq_range_list *list;
3132 char *str = NULL;
3133
3134 list = &event->freq_range;
3135
3136 if (list->num)
3137 str = freq_range_list_str(list);
3138 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
3139 str ? str : "");
3140
3141 #ifdef CONFIG_P2P
3142 if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
3143 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
3144 __func__);
3145 } else {
3146 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
3147 wpas_p2p_update_channel_list(wpa_s);
3148 }
3149
3150 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3151 int freq;
3152 if (!ifs->current_ssid ||
3153 !ifs->current_ssid->p2p_group ||
3154 (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
3155 ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
3156 continue;
3157
3158 freq = ifs->current_ssid->frequency;
3159 if (!freq_range_list_includes(list, freq)) {
3160 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
3161 freq);
3162 continue;
3163 }
3164
3165 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
3166 freq);
3167 /* TODO: Consider using CSA or removing the group within
3168 * wpa_supplicant */
3169 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
3170 }
3171 #endif /* CONFIG_P2P */
3172
3173 os_free(str);
3174 }
3175
3176
3177 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3178 union wpa_event_data *data)
3179 {
3180 wpa_dbg(wpa_s, MSG_DEBUG,
3181 "Connection authorized by device, previous state %d",
3182 wpa_s->wpa_state);
3183 if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3184 wpa_supplicant_cancel_auth_timeout(wpa_s);
3185 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3186 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3187 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3188 }
3189 wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3190 wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3191 data->assoc_info.ptk_kck_len,
3192 data->assoc_info.ptk_kek,
3193 data->assoc_info.ptk_kek_len);
3194 }
3195
3196
3197 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3198 union wpa_event_data *data)
3199 {
3200 struct wpa_supplicant *wpa_s = ctx;
3201 int resched;
3202
3203 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3204 event != EVENT_INTERFACE_ENABLED &&
3205 event != EVENT_INTERFACE_STATUS &&
3206 event != EVENT_SCHED_SCAN_STOPPED) {
3207 wpa_dbg(wpa_s, MSG_DEBUG,
3208 "Ignore event %s (%d) while interface is disabled",
3209 event_to_string(event), event);
3210 return;
3211 }
3212
3213 #ifndef CONFIG_NO_STDOUT_DEBUG
3214 {
3215 int level = MSG_DEBUG;
3216
3217 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3218 const struct ieee80211_hdr *hdr;
3219 u16 fc;
3220 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3221 fc = le_to_host16(hdr->frame_control);
3222 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3223 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3224 level = MSG_EXCESSIVE;
3225 }
3226
3227 wpa_dbg(wpa_s, level, "Event %s (%d) received",
3228 event_to_string(event), event);
3229 }
3230 #endif /* CONFIG_NO_STDOUT_DEBUG */
3231
3232 switch (event) {
3233 case EVENT_AUTH:
3234 sme_event_auth(wpa_s, data);
3235 break;
3236 case EVENT_ASSOC:
3237 wpa_supplicant_event_assoc(wpa_s, data);
3238 if (data && data->assoc_info.authorized)
3239 wpa_supplicant_event_assoc_auth(wpa_s, data);
3240 break;
3241 case EVENT_DISASSOC:
3242 wpas_event_disassoc(wpa_s,
3243 data ? &data->disassoc_info : NULL);
3244 break;
3245 case EVENT_DEAUTH:
3246 wpas_event_deauth(wpa_s,
3247 data ? &data->deauth_info : NULL);
3248 break;
3249 case EVENT_MICHAEL_MIC_FAILURE:
3250 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3251 break;
3252 #ifndef CONFIG_NO_SCAN_PROCESSING
3253 case EVENT_SCAN_STARTED:
3254 os_get_reltime(&wpa_s->scan_start_time);
3255 if (wpa_s->own_scan_requested) {
3256 struct os_reltime diff;
3257
3258 os_reltime_sub(&wpa_s->scan_start_time,
3259 &wpa_s->scan_trigger_time, &diff);
3260 wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3261 diff.sec, diff.usec);
3262 wpa_s->own_scan_requested = 0;
3263 wpa_s->own_scan_running = 1;
3264 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3265 wpa_s->manual_scan_use_id) {
3266 wpa_msg_ctrl(wpa_s, MSG_INFO,
3267 WPA_EVENT_SCAN_STARTED "id=%u",
3268 wpa_s->manual_scan_id);
3269 } else {
3270 wpa_msg_ctrl(wpa_s, MSG_INFO,
3271 WPA_EVENT_SCAN_STARTED);
3272 }
3273 } else {
3274 wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3275 wpa_s->radio->external_scan_running = 1;
3276 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3277 }
3278 break;
3279 case EVENT_SCAN_RESULTS:
3280 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3281 struct os_reltime now, diff;
3282 os_get_reltime(&now);
3283 os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3284 wpa_s->scan_start_time.sec = 0;
3285 wpa_s->scan_start_time.usec = 0;
3286 wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3287 diff.sec, diff.usec);
3288 }
3289 if (wpa_supplicant_event_scan_results(wpa_s, data))
3290 break; /* interface may have been removed */
3291 wpa_s->own_scan_running = 0;
3292 wpa_s->radio->external_scan_running = 0;
3293 radio_work_check_next(wpa_s);
3294 break;
3295 #endif /* CONFIG_NO_SCAN_PROCESSING */
3296 case EVENT_ASSOCINFO:
3297 wpa_supplicant_event_associnfo(wpa_s, data);
3298 break;
3299 case EVENT_INTERFACE_STATUS:
3300 wpa_supplicant_event_interface_status(wpa_s, data);
3301 break;
3302 case EVENT_PMKID_CANDIDATE:
3303 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3304 break;
3305 #ifdef CONFIG_PEERKEY
3306 case EVENT_STKSTART:
3307 wpa_supplicant_event_stkstart(wpa_s, data);
3308 break;
3309 #endif /* CONFIG_PEERKEY */
3310 #ifdef CONFIG_TDLS
3311 case EVENT_TDLS:
3312 wpa_supplicant_event_tdls(wpa_s, data);
3313 break;
3314 #endif /* CONFIG_TDLS */
3315 #ifdef CONFIG_WNM
3316 case EVENT_WNM:
3317 wpa_supplicant_event_wnm(wpa_s, data);
3318 break;
3319 #endif /* CONFIG_WNM */
3320 #ifdef CONFIG_IEEE80211R
3321 case EVENT_FT_RESPONSE:
3322 wpa_supplicant_event_ft_response(wpa_s, data);
3323 break;
3324 #endif /* CONFIG_IEEE80211R */
3325 #ifdef CONFIG_IBSS_RSN
3326 case EVENT_IBSS_RSN_START:
3327 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3328 break;
3329 #endif /* CONFIG_IBSS_RSN */
3330 case EVENT_ASSOC_REJECT:
3331 if (data->assoc_reject.bssid)
3332 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3333 "bssid=" MACSTR " status_code=%u",
3334 MAC2STR(data->assoc_reject.bssid),
3335 data->assoc_reject.status_code);
3336 else
3337 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3338 "status_code=%u",
3339 data->assoc_reject.status_code);
3340 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3341 sme_event_assoc_reject(wpa_s, data);
3342 else {
3343 const u8 *bssid = data->assoc_reject.bssid;
3344 if (bssid == NULL || is_zero_ether_addr(bssid))
3345 bssid = wpa_s->pending_bssid;
3346 wpas_connection_failed(wpa_s, bssid);
3347 wpa_supplicant_mark_disassoc(wpa_s);
3348 }
3349 break;
3350 case EVENT_AUTH_TIMED_OUT:
3351 /* It is possible to get this event from earlier connection */
3352 if (wpa_s->current_ssid &&
3353 wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3354 wpa_dbg(wpa_s, MSG_DEBUG,
3355 "Ignore AUTH_TIMED_OUT in mesh configuration");
3356 break;
3357 }
3358 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3359 sme_event_auth_timed_out(wpa_s, data);
3360 break;
3361 case EVENT_ASSOC_TIMED_OUT:
3362 /* It is possible to get this event from earlier connection */
3363 if (wpa_s->current_ssid &&
3364 wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3365 wpa_dbg(wpa_s, MSG_DEBUG,
3366 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3367 break;
3368 }
3369 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3370 sme_event_assoc_timed_out(wpa_s, data);
3371 break;
3372 case EVENT_TX_STATUS:
3373 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3374 " type=%d stype=%d",
3375 MAC2STR(data->tx_status.dst),
3376 data->tx_status.type, data->tx_status.stype);
3377 #ifdef CONFIG_AP
3378 if (wpa_s->ap_iface == NULL) {
3379 #ifdef CONFIG_OFFCHANNEL
3380 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3381 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3382 offchannel_send_action_tx_status(
3383 wpa_s, data->tx_status.dst,
3384 data->tx_status.data,
3385 data->tx_status.data_len,
3386 data->tx_status.ack ?
3387 OFFCHANNEL_SEND_ACTION_SUCCESS :
3388 OFFCHANNEL_SEND_ACTION_NO_ACK);
3389 #endif /* CONFIG_OFFCHANNEL */
3390 break;
3391 }
3392 #endif /* CONFIG_AP */
3393 #ifdef CONFIG_OFFCHANNEL
3394 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3395 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3396 /*
3397 * Catch TX status events for Action frames we sent via group
3398 * interface in GO mode.
3399 */
3400 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3401 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3402 os_memcmp(wpa_s->parent->pending_action_dst,
3403 data->tx_status.dst, ETH_ALEN) == 0) {
3404 offchannel_send_action_tx_status(
3405 wpa_s->parent, data->tx_status.dst,
3406 data->tx_status.data,
3407 data->tx_status.data_len,
3408 data->tx_status.ack ?
3409 OFFCHANNEL_SEND_ACTION_SUCCESS :
3410 OFFCHANNEL_SEND_ACTION_NO_ACK);
3411 break;
3412 }
3413 #endif /* CONFIG_OFFCHANNEL */
3414 #ifdef CONFIG_AP
3415 switch (data->tx_status.type) {
3416 case WLAN_FC_TYPE_MGMT:
3417 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3418 data->tx_status.data_len,
3419 data->tx_status.stype,
3420 data->tx_status.ack);
3421 break;
3422 case WLAN_FC_TYPE_DATA:
3423 ap_tx_status(wpa_s, data->tx_status.dst,
3424 data->tx_status.data,
3425 data->tx_status.data_len,
3426 data->tx_status.ack);
3427 break;
3428 }
3429 #endif /* CONFIG_AP */
3430 break;
3431 #ifdef CONFIG_AP
3432 case EVENT_EAPOL_TX_STATUS:
3433 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3434 data->eapol_tx_status.data,
3435 data->eapol_tx_status.data_len,
3436 data->eapol_tx_status.ack);
3437 break;
3438 case EVENT_DRIVER_CLIENT_POLL_OK:
3439 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3440 break;
3441 case EVENT_RX_FROM_UNKNOWN:
3442 if (wpa_s->ap_iface == NULL)
3443 break;
3444 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3445 data->rx_from_unknown.wds);
3446 break;
3447 case EVENT_CH_SWITCH:
3448 if (!data)
3449 break;
3450 if (!wpa_s->ap_iface) {
3451 wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3452 "event in non-AP mode");
3453 break;
3454 }
3455
3456 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3457 data->ch_switch.ht_enabled,
3458 data->ch_switch.ch_offset,
3459 data->ch_switch.ch_width,
3460 data->ch_switch.cf1,
3461 data->ch_switch.cf2);
3462 break;
3463 #ifdef NEED_AP_MLME
3464 case EVENT_DFS_RADAR_DETECTED:
3465 if (data)
3466 wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
3467 break;
3468 case EVENT_DFS_CAC_STARTED:
3469 if (data)
3470 wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
3471 break;
3472 case EVENT_DFS_CAC_FINISHED:
3473 if (data)
3474 wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
3475 break;
3476 case EVENT_DFS_CAC_ABORTED:
3477 if (data)
3478 wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
3479 break;
3480 case EVENT_DFS_NOP_FINISHED:
3481 if (data)
3482 wpas_event_dfs_cac_nop_finished(wpa_s,
3483 &data->dfs_event);
3484 break;
3485 #endif /* NEED_AP_MLME */
3486 #endif /* CONFIG_AP */
3487 case EVENT_RX_MGMT: {
3488 u16 fc, stype;
3489 const struct ieee80211_mgmt *mgmt;
3490
3491 #ifdef CONFIG_TESTING_OPTIONS
3492 if (wpa_s->ext_mgmt_frame_handling) {
3493 struct rx_mgmt *rx = &data->rx_mgmt;
3494 size_t hex_len = 2 * rx->frame_len + 1;
3495 char *hex = os_malloc(hex_len);
3496 if (hex) {
3497 wpa_snprintf_hex(hex, hex_len,
3498 rx->frame, rx->frame_len);
3499 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3500 rx->freq, rx->datarate, rx->ssi_signal,
3501 hex);
3502 os_free(hex);
3503 }
3504 break;
3505 }
3506 #endif /* CONFIG_TESTING_OPTIONS */
3507
3508 mgmt = (const struct ieee80211_mgmt *)
3509 data->rx_mgmt.frame;
3510 fc = le_to_host16(mgmt->frame_control);
3511 stype = WLAN_FC_GET_STYPE(fc);
3512
3513 #ifdef CONFIG_AP
3514 if (wpa_s->ap_iface == NULL) {
3515 #endif /* CONFIG_AP */
3516 #ifdef CONFIG_P2P
3517 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3518 data->rx_mgmt.frame_len > 24) {
3519 const u8 *src = mgmt->sa;
3520 const u8 *ie = mgmt->u.probe_req.variable;
3521 size_t ie_len = data->rx_mgmt.frame_len -
3522 (mgmt->u.probe_req.variable -
3523 data->rx_mgmt.frame);
3524 wpas_p2p_probe_req_rx(
3525 wpa_s, src, mgmt->da,
3526 mgmt->bssid, ie, ie_len,
3527 data->rx_mgmt.freq,
3528 data->rx_mgmt.ssi_signal);
3529 break;
3530 }
3531 #endif /* CONFIG_P2P */
3532 #ifdef CONFIG_IBSS_RSN
3533 if (wpa_s->current_ssid &&
3534 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3535 stype == WLAN_FC_STYPE_AUTH &&
3536 data->rx_mgmt.frame_len >= 30) {
3537 wpa_supplicant_event_ibss_auth(wpa_s, data);
3538 break;
3539 }
3540 #endif /* CONFIG_IBSS_RSN */
3541
3542 if (stype == WLAN_FC_STYPE_ACTION) {
3543 wpas_event_rx_mgmt_action(
3544 wpa_s, data->rx_mgmt.frame,
3545 data->rx_mgmt.frame_len,
3546 data->rx_mgmt.freq,
3547 data->rx_mgmt.ssi_signal);
3548 break;
3549 }
3550
3551 if (wpa_s->ifmsh) {
3552 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3553 break;
3554 }
3555
3556 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3557 "management frame in non-AP mode");
3558 break;
3559 #ifdef CONFIG_AP
3560 }
3561
3562 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3563 data->rx_mgmt.frame_len > 24) {
3564 const u8 *ie = mgmt->u.probe_req.variable;
3565 size_t ie_len = data->rx_mgmt.frame_len -
3566 (mgmt->u.probe_req.variable -
3567 data->rx_mgmt.frame);
3568
3569 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3570 mgmt->bssid, ie, ie_len,
3571 data->rx_mgmt.ssi_signal);
3572 }
3573
3574 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3575 #endif /* CONFIG_AP */
3576 break;
3577 }
3578 case EVENT_RX_PROBE_REQ:
3579 if (data->rx_probe_req.sa == NULL ||
3580 data->rx_probe_req.ie == NULL)
3581 break;
3582 #ifdef CONFIG_AP
3583 if (wpa_s->ap_iface) {
3584 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3585 data->rx_probe_req.sa,
3586 data->rx_probe_req.da,
3587 data->rx_probe_req.bssid,
3588 data->rx_probe_req.ie,
3589 data->rx_probe_req.ie_len,
3590 data->rx_probe_req.ssi_signal);
3591 break;
3592 }
3593 #endif /* CONFIG_AP */
3594 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3595 data->rx_probe_req.da,
3596 data->rx_probe_req.bssid,
3597 data->rx_probe_req.ie,
3598 data->rx_probe_req.ie_len,
3599 0,
3600 data->rx_probe_req.ssi_signal);
3601 break;
3602 case EVENT_REMAIN_ON_CHANNEL:
3603 #ifdef CONFIG_OFFCHANNEL
3604 offchannel_remain_on_channel_cb(
3605 wpa_s, data->remain_on_channel.freq,
3606 data->remain_on_channel.duration);
3607 #endif /* CONFIG_OFFCHANNEL */
3608 wpas_p2p_remain_on_channel_cb(
3609 wpa_s, data->remain_on_channel.freq,
3610 data->remain_on_channel.duration);
3611 break;
3612 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3613 #ifdef CONFIG_OFFCHANNEL
3614 offchannel_cancel_remain_on_channel_cb(
3615 wpa_s, data->remain_on_channel.freq);
3616 #endif /* CONFIG_OFFCHANNEL */
3617 wpas_p2p_cancel_remain_on_channel_cb(
3618 wpa_s, data->remain_on_channel.freq);
3619 break;
3620 case EVENT_EAPOL_RX:
3621 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3622 data->eapol_rx.data,
3623 data->eapol_rx.data_len);
3624 break;
3625 case EVENT_SIGNAL_CHANGE:
3626 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3627 "above=%d signal=%d noise=%d txrate=%d",
3628 data->signal_change.above_threshold,
3629 data->signal_change.current_signal,
3630 data->signal_change.current_noise,
3631 data->signal_change.current_txrate);
3632 wpa_bss_update_level(wpa_s->current_bss,
3633 data->signal_change.current_signal);
3634 bgscan_notify_signal_change(
3635 wpa_s, data->signal_change.above_threshold,
3636 data->signal_change.current_signal,
3637 data->signal_change.current_noise,
3638 data->signal_change.current_txrate);
3639 break;
3640 case EVENT_INTERFACE_ENABLED:
3641 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3642 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3643 wpa_supplicant_update_mac_addr(wpa_s);
3644 if (wpa_s->p2p_mgmt) {
3645 wpa_supplicant_set_state(wpa_s,
3646 WPA_DISCONNECTED);
3647 break;
3648 }
3649
3650 #ifdef CONFIG_AP
3651 if (!wpa_s->ap_iface) {
3652 wpa_supplicant_set_state(wpa_s,
3653 WPA_DISCONNECTED);
3654 wpa_s->scan_req = NORMAL_SCAN_REQ;
3655 wpa_supplicant_req_scan(wpa_s, 0, 0);
3656 } else
3657 wpa_supplicant_set_state(wpa_s,
3658 WPA_COMPLETED);
3659 #else /* CONFIG_AP */
3660 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3661 wpa_supplicant_req_scan(wpa_s, 0, 0);
3662 #endif /* CONFIG_AP */
3663 }
3664 break;
3665 case EVENT_INTERFACE_DISABLED:
3666 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3667 #ifdef CONFIG_P2P
3668 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3669 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3670 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3671 /*
3672 * Mark interface disabled if this happens to end up not
3673 * being removed as a separate P2P group interface.
3674 */
3675 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3676 /*
3677 * The interface was externally disabled. Remove
3678 * it assuming an external entity will start a
3679 * new session if needed.
3680 */
3681 if (wpa_s->current_ssid &&
3682 wpa_s->current_ssid->p2p_group)
3683 wpas_p2p_interface_unavailable(wpa_s);
3684 else
3685 wpas_p2p_disconnect(wpa_s);
3686 /*
3687 * wpa_s instance may have been freed, so must not use
3688 * it here anymore.
3689 */
3690 break;
3691 }
3692 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3693 p2p_in_progress(wpa_s->global->p2p) > 1) {
3694 /* This radio work will be cancelled, so clear P2P
3695 * state as well.
3696 */
3697 p2p_stop_find(wpa_s->global->p2p);
3698 }
3699 #endif /* CONFIG_P2P */
3700
3701 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3702 /*
3703 * Indicate disconnection to keep ctrl_iface events
3704 * consistent.
3705 */
3706 wpa_supplicant_event_disassoc(
3707 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3708 }
3709 wpa_supplicant_mark_disassoc(wpa_s);
3710 radio_remove_works(wpa_s, NULL, 0);
3711
3712 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3713 break;
3714 case EVENT_CHANNEL_LIST_CHANGED:
3715 wpa_supplicant_update_channel_list(
3716 wpa_s, &data->channel_list_changed);
3717 break;
3718 case EVENT_INTERFACE_UNAVAILABLE:
3719 wpas_p2p_interface_unavailable(wpa_s);
3720 break;
3721 case EVENT_BEST_CHANNEL:
3722 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3723 "(%d %d %d)",
3724 data->best_chan.freq_24, data->best_chan.freq_5,
3725 data->best_chan.freq_overall);
3726 wpa_s->best_24_freq = data->best_chan.freq_24;
3727 wpa_s->best_5_freq = data->best_chan.freq_5;
3728 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3729 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3730 data->best_chan.freq_5,
3731 data->best_chan.freq_overall);
3732 break;
3733 case EVENT_UNPROT_DEAUTH:
3734 wpa_supplicant_event_unprot_deauth(wpa_s,
3735 &data->unprot_deauth);
3736 break;
3737 case EVENT_UNPROT_DISASSOC:
3738 wpa_supplicant_event_unprot_disassoc(wpa_s,
3739 &data->unprot_disassoc);
3740 break;
3741 case EVENT_STATION_LOW_ACK:
3742 #ifdef CONFIG_AP
3743 if (wpa_s->ap_iface && data)
3744 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3745 data->low_ack.addr);
3746 #endif /* CONFIG_AP */
3747 #ifdef CONFIG_TDLS
3748 if (data)
3749 wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3750 data->low_ack.addr);
3751 #endif /* CONFIG_TDLS */
3752 break;
3753 case EVENT_IBSS_PEER_LOST:
3754 #ifdef CONFIG_IBSS_RSN
3755 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3756 #endif /* CONFIG_IBSS_RSN */
3757 break;
3758 case EVENT_DRIVER_GTK_REKEY:
3759 if (os_memcmp(data->driver_gtk_rekey.bssid,
3760 wpa_s->bssid, ETH_ALEN))
3761 break;
3762 if (!wpa_s->wpa)
3763 break;
3764 wpa_sm_update_replay_ctr(wpa_s->wpa,
3765 data->driver_gtk_rekey.replay_ctr);
3766 break;
3767 case EVENT_SCHED_SCAN_STOPPED:
3768 wpa_s->pno = 0;
3769 wpa_s->sched_scanning = 0;
3770 resched = wpa_s->scanning;
3771 wpa_supplicant_notify_scanning(wpa_s, 0);
3772
3773 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3774 break;
3775
3776 /*
3777 * Start a new sched scan to continue searching for more SSIDs
3778 * either if timed out or PNO schedule scan is pending.
3779 */
3780 if (wpa_s->sched_scan_timed_out) {
3781 wpa_supplicant_req_sched_scan(wpa_s);
3782 } else if (wpa_s->pno_sched_pending) {
3783 wpa_s->pno_sched_pending = 0;
3784 wpas_start_pno(wpa_s);
3785 } else if (resched) {
3786 wpa_supplicant_req_scan(wpa_s, 0, 0);
3787 }
3788
3789 break;
3790 case EVENT_WPS_BUTTON_PUSHED:
3791 #ifdef CONFIG_WPS
3792 wpas_wps_start_pbc(wpa_s, NULL, 0);
3793 #endif /* CONFIG_WPS */
3794 break;
3795 case EVENT_AVOID_FREQUENCIES:
3796 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3797 break;
3798 case EVENT_CONNECT_FAILED_REASON:
3799 #ifdef CONFIG_AP
3800 if (!wpa_s->ap_iface || !data)
3801 break;
3802 hostapd_event_connect_failed_reason(
3803 wpa_s->ap_iface->bss[0],
3804 data->connect_failed_reason.addr,
3805 data->connect_failed_reason.code);
3806 #endif /* CONFIG_AP */
3807 break;
3808 case EVENT_NEW_PEER_CANDIDATE:
3809 #ifdef CONFIG_MESH
3810 if (!wpa_s->ifmsh || !data)
3811 break;
3812 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
3813 data->mesh_peer.ies,
3814 data->mesh_peer.ie_len);
3815 #endif /* CONFIG_MESH */
3816 break;
3817 default:
3818 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3819 break;
3820 }
3821 }
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