]> git.ipfire.org Git - thirdparty/hostap.git/blob - wpa_supplicant/events.c
projects / thirdparty / hostap.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
P2P: Do not perform P2P GO CS in some cases
[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 "fst/fst.h"
27 #include "wnm_sta.h"
28 #include "notify.h"
29 #include "common/ieee802_11_defs.h"
30 #include "common/ieee802_11_common.h"
31 #include "crypto/random.h"
32 #include "blacklist.h"
33 #include "wpas_glue.h"
34 #include "wps_supplicant.h"
35 #include "ibss_rsn.h"
36 #include "sme.h"
37 #include "gas_query.h"
38 #include "p2p_supplicant.h"
39 #include "bgscan.h"
40 #include "autoscan.h"
41 #include "ap.h"
42 #include "bss.h"
43 #include "scan.h"
44 #include "offchannel.h"
45 #include "interworking.h"
46 #include "mesh.h"
47 #include "mesh_mpm.h"
48 #include "wmm_ac.h"
49
50
51 #ifndef CONFIG_NO_SCAN_PROCESSING
52 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
53 int new_scan, int own_request);
54 #endif /* CONFIG_NO_SCAN_PROCESSING */
55
56
57 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
58 struct wpa_ssid *ssid)
59 {
60 struct os_reltime now;
61
62 if (ssid == NULL || ssid->disabled_until.sec == 0)
63 return 0;
64
65 os_get_reltime(&now);
66 if (ssid->disabled_until.sec > now.sec)
67 return ssid->disabled_until.sec - now.sec;
68
69 wpas_clear_temp_disabled(wpa_s, ssid, 0);
70
71 return 0;
72 }
73
74
75 /**
76 * wpas_reenabled_network_time - Time until first network is re-enabled
77 * @wpa_s: Pointer to wpa_supplicant data
78 * Returns: If all enabled networks are temporarily disabled, returns the time
79 * (in sec) until the first network is re-enabled. Otherwise returns 0.
80 *
81 * This function is used in case all enabled networks are temporarily disabled,
82 * in which case it returns the time (in sec) that the first network will be
83 * re-enabled. The function assumes that at least one network is enabled.
84 */
85 static int wpas_reenabled_network_time(struct wpa_supplicant *wpa_s)
86 {
87 struct wpa_ssid *ssid;
88 int disabled_for, res = 0;
89
90 #ifdef CONFIG_INTERWORKING
91 if (wpa_s->conf->auto_interworking && wpa_s->conf->interworking &&
92 wpa_s->conf->cred)
93 return 0;
94 #endif /* CONFIG_INTERWORKING */
95
96 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
97 if (ssid->disabled)
98 continue;
99
100 disabled_for = wpas_temp_disabled(wpa_s, ssid);
101 if (!disabled_for)
102 return 0;
103
104 if (!res || disabled_for < res)
105 res = disabled_for;
106 }
107
108 return res;
109 }
110
111
112 void wpas_network_reenabled(void *eloop_ctx, void *timeout_ctx)
113 {
114 struct wpa_supplicant *wpa_s = eloop_ctx;
115
116 if (wpa_s->disconnected || wpa_s->wpa_state != WPA_SCANNING)
117 return;
118
119 wpa_dbg(wpa_s, MSG_DEBUG,
120 "Try to associate due to network getting re-enabled");
121 if (wpa_supplicant_fast_associate(wpa_s) != 1) {
122 wpa_supplicant_cancel_sched_scan(wpa_s);
123 wpa_supplicant_req_scan(wpa_s, 0, 0);
124 }
125 }
126
127
128 static struct wpa_bss * wpa_supplicant_get_new_bss(
129 struct wpa_supplicant *wpa_s, const u8 *bssid)
130 {
131 struct wpa_bss *bss = NULL;
132 struct wpa_ssid *ssid = wpa_s->current_ssid;
133
134 if (ssid->ssid_len > 0)
135 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
136 if (!bss)
137 bss = wpa_bss_get_bssid(wpa_s, bssid);
138
139 return bss;
140 }
141
142
143 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
144 {
145 struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
146
147 if (!bss) {
148 wpa_supplicant_update_scan_results(wpa_s);
149
150 /* Get the BSS from the new scan results */
151 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
152 }
153
154 if (bss)
155 wpa_s->current_bss = bss;
156 }
157
158
159 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
160 {
161 struct wpa_ssid *ssid, *old_ssid;
162 u8 drv_ssid[SSID_MAX_LEN];
163 size_t drv_ssid_len;
164 int res;
165
166 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
167 wpa_supplicant_update_current_bss(wpa_s);
168
169 if (wpa_s->current_ssid->ssid_len == 0)
170 return 0; /* current profile still in use */
171 res = wpa_drv_get_ssid(wpa_s, drv_ssid);
172 if (res < 0) {
173 wpa_msg(wpa_s, MSG_INFO,
174 "Failed to read SSID from driver");
175 return 0; /* try to use current profile */
176 }
177 drv_ssid_len = res;
178
179 if (drv_ssid_len == wpa_s->current_ssid->ssid_len &&
180 os_memcmp(drv_ssid, wpa_s->current_ssid->ssid,
181 drv_ssid_len) == 0)
182 return 0; /* current profile still in use */
183
184 wpa_msg(wpa_s, MSG_DEBUG,
185 "Driver-initiated BSS selection changed the SSID to %s",
186 wpa_ssid_txt(drv_ssid, drv_ssid_len));
187 /* continue selecting a new network profile */
188 }
189
190 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
191 "information");
192 ssid = wpa_supplicant_get_ssid(wpa_s);
193 if (ssid == NULL) {
194 wpa_msg(wpa_s, MSG_INFO,
195 "No network configuration found for the current AP");
196 return -1;
197 }
198
199 if (wpas_network_disabled(wpa_s, ssid)) {
200 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
201 return -1;
202 }
203
204 if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
205 disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
206 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
207 return -1;
208 }
209
210 res = wpas_temp_disabled(wpa_s, ssid);
211 if (res > 0) {
212 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
213 "disabled for %d second(s)", res);
214 return -1;
215 }
216
217 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
218 "current AP");
219 if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
220 u8 wpa_ie[80];
221 size_t wpa_ie_len = sizeof(wpa_ie);
222 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
223 wpa_ie, &wpa_ie_len) < 0)
224 wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
225 } else {
226 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
227 }
228
229 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
230 eapol_sm_invalidate_cached_session(wpa_s->eapol);
231 old_ssid = wpa_s->current_ssid;
232 wpa_s->current_ssid = ssid;
233
234 wpa_supplicant_update_current_bss(wpa_s);
235
236 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
237 wpa_supplicant_initiate_eapol(wpa_s);
238 if (old_ssid != wpa_s->current_ssid)
239 wpas_notify_network_changed(wpa_s);
240
241 return 0;
242 }
243
244
245 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
246 {
247 struct wpa_supplicant *wpa_s = eloop_ctx;
248
249 if (wpa_s->countermeasures) {
250 wpa_s->countermeasures = 0;
251 wpa_drv_set_countermeasures(wpa_s, 0);
252 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
253
254 /*
255 * It is possible that the device is sched scanning, which means
256 * that a connection attempt will be done only when we receive
257 * scan results. However, in this case, it would be preferable
258 * to scan and connect immediately, so cancel the sched_scan and
259 * issue a regular scan flow.
260 */
261 wpa_supplicant_cancel_sched_scan(wpa_s);
262 wpa_supplicant_req_scan(wpa_s, 0, 0);
263 }
264 }
265
266
267 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
268 {
269 int bssid_changed;
270
271 wnm_bss_keep_alive_deinit(wpa_s);
272
273 #ifdef CONFIG_IBSS_RSN
274 ibss_rsn_deinit(wpa_s->ibss_rsn);
275 wpa_s->ibss_rsn = NULL;
276 #endif /* CONFIG_IBSS_RSN */
277
278 #ifdef CONFIG_AP
279 wpa_supplicant_ap_deinit(wpa_s);
280 #endif /* CONFIG_AP */
281
282 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
283 return;
284
285 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
286 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
287 os_memset(wpa_s->bssid, 0, ETH_ALEN);
288 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
289 sme_clear_on_disassoc(wpa_s);
290 wpa_s->current_bss = NULL;
291 wpa_s->assoc_freq = 0;
292
293 if (bssid_changed)
294 wpas_notify_bssid_changed(wpa_s);
295
296 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
297 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
298 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
299 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
300 wpa_s->ap_ies_from_associnfo = 0;
301 wpa_s->current_ssid = NULL;
302 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
303 wpa_s->key_mgmt = 0;
304
305 wpas_rrm_reset(wpa_s);
306 }
307
308
309 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
310 {
311 struct wpa_ie_data ie;
312 int pmksa_set = -1;
313 size_t i;
314
315 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
316 ie.pmkid == NULL)
317 return;
318
319 for (i = 0; i < ie.num_pmkid; i++) {
320 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
321 ie.pmkid + i * PMKID_LEN,
322 NULL, NULL, 0);
323 if (pmksa_set == 0) {
324 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
325 break;
326 }
327 }
328
329 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
330 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
331 }
332
333
334 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
335 union wpa_event_data *data)
336 {
337 if (data == NULL) {
338 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
339 "event");
340 return;
341 }
342 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
343 " index=%d preauth=%d",
344 MAC2STR(data->pmkid_candidate.bssid),
345 data->pmkid_candidate.index,
346 data->pmkid_candidate.preauth);
347
348 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
349 data->pmkid_candidate.index,
350 data->pmkid_candidate.preauth);
351 }
352
353
354 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
355 {
356 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
357 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
358 return 0;
359
360 #ifdef IEEE8021X_EAPOL
361 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
362 wpa_s->current_ssid &&
363 !(wpa_s->current_ssid->eapol_flags &
364 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
365 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
366 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
367 * plaintext or static WEP keys). */
368 return 0;
369 }
370 #endif /* IEEE8021X_EAPOL */
371
372 return 1;
373 }
374
375
376 /**
377 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
378 * @wpa_s: pointer to wpa_supplicant data
379 * @ssid: Configuration data for the network
380 * Returns: 0 on success, -1 on failure
381 *
382 * This function is called when starting authentication with a network that is
383 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
384 */
385 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
386 struct wpa_ssid *ssid)
387 {
388 #ifdef IEEE8021X_EAPOL
389 #ifdef PCSC_FUNCS
390 int aka = 0, sim = 0;
391
392 if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
393 wpa_s->scard != NULL || wpa_s->conf->external_sim)
394 return 0;
395
396 if (ssid == NULL || ssid->eap.eap_methods == NULL) {
397 sim = 1;
398 aka = 1;
399 } else {
400 struct eap_method_type *eap = ssid->eap.eap_methods;
401 while (eap->vendor != EAP_VENDOR_IETF ||
402 eap->method != EAP_TYPE_NONE) {
403 if (eap->vendor == EAP_VENDOR_IETF) {
404 if (eap->method == EAP_TYPE_SIM)
405 sim = 1;
406 else if (eap->method == EAP_TYPE_AKA ||
407 eap->method == EAP_TYPE_AKA_PRIME)
408 aka = 1;
409 }
410 eap++;
411 }
412 }
413
414 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
415 sim = 0;
416 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
417 eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
418 NULL)
419 aka = 0;
420
421 if (!sim && !aka) {
422 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
423 "use SIM, but neither EAP-SIM nor EAP-AKA are "
424 "enabled");
425 return 0;
426 }
427
428 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
429 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
430
431 wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
432 if (wpa_s->scard == NULL) {
433 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
434 "(pcsc-lite)");
435 return -1;
436 }
437 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
438 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
439 #endif /* PCSC_FUNCS */
440 #endif /* IEEE8021X_EAPOL */
441
442 return 0;
443 }
444
445
446 #ifndef CONFIG_NO_SCAN_PROCESSING
447
448 static int has_wep_key(struct wpa_ssid *ssid)
449 {
450 int i;
451
452 for (i = 0; i < NUM_WEP_KEYS; i++) {
453 if (ssid->wep_key_len[i])
454 return 1;
455 }
456
457 return 0;
458 }
459
460
461 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
462 struct wpa_ssid *ssid)
463 {
464 int privacy = 0;
465
466 if (ssid->mixed_cell)
467 return 1;
468
469 #ifdef CONFIG_WPS
470 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
471 return 1;
472 #endif /* CONFIG_WPS */
473
474 if (has_wep_key(ssid))
475 privacy = 1;
476
477 #ifdef IEEE8021X_EAPOL
478 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
479 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
480 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
481 privacy = 1;
482 #endif /* IEEE8021X_EAPOL */
483
484 if (wpa_key_mgmt_wpa(ssid->key_mgmt))
485 privacy = 1;
486
487 if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
488 privacy = 1;
489
490 if (bss->caps & IEEE80211_CAP_PRIVACY)
491 return privacy;
492 return !privacy;
493 }
494
495
496 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
497 struct wpa_ssid *ssid,
498 struct wpa_bss *bss)
499 {
500 struct wpa_ie_data ie;
501 int proto_match = 0;
502 const u8 *rsn_ie, *wpa_ie;
503 int ret;
504 int wep_ok;
505
506 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
507 if (ret >= 0)
508 return ret;
509
510 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
511 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
512 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
513 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
514 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
515
516 rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
517 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
518 proto_match++;
519
520 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
521 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
522 "failed");
523 break;
524 }
525
526 if (wep_ok &&
527 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
528 {
529 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
530 "in RSN IE");
531 return 1;
532 }
533
534 if (!(ie.proto & ssid->proto)) {
535 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
536 "mismatch");
537 break;
538 }
539
540 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
541 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
542 "cipher mismatch");
543 break;
544 }
545
546 if (!(ie.group_cipher & ssid->group_cipher)) {
547 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
548 "cipher mismatch");
549 break;
550 }
551
552 if (!(ie.key_mgmt & ssid->key_mgmt)) {
553 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
554 "mismatch");
555 break;
556 }
557
558 #ifdef CONFIG_IEEE80211W
559 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
560 wpas_get_ssid_pmf(wpa_s, ssid) ==
561 MGMT_FRAME_PROTECTION_REQUIRED) {
562 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
563 "frame protection");
564 break;
565 }
566 #endif /* CONFIG_IEEE80211W */
567
568 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
569 return 1;
570 }
571
572 wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
573 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
574 proto_match++;
575
576 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
577 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
578 "failed");
579 break;
580 }
581
582 if (wep_ok &&
583 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
584 {
585 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
586 "in WPA IE");
587 return 1;
588 }
589
590 if (!(ie.proto & ssid->proto)) {
591 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
592 "mismatch");
593 break;
594 }
595
596 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
597 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
598 "cipher mismatch");
599 break;
600 }
601
602 if (!(ie.group_cipher & ssid->group_cipher)) {
603 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
604 "cipher mismatch");
605 break;
606 }
607
608 if (!(ie.key_mgmt & ssid->key_mgmt)) {
609 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
610 "mismatch");
611 break;
612 }
613
614 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
615 return 1;
616 }
617
618 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
619 !rsn_ie) {
620 wpa_dbg(wpa_s, MSG_DEBUG, " allow for non-WPA IEEE 802.1X");
621 return 1;
622 }
623
624 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
625 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
626 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
627 return 0;
628 }
629
630 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
631 wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
632 wpa_dbg(wpa_s, MSG_DEBUG, " allow in OSEN");
633 return 1;
634 }
635
636 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
637 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
638 return 1;
639 }
640
641 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with "
642 "WPA/WPA2");
643
644 return 0;
645 }
646
647
648 static int freq_allowed(int *freqs, int freq)
649 {
650 int i;
651
652 if (freqs == NULL)
653 return 1;
654
655 for (i = 0; freqs[i]; i++)
656 if (freqs[i] == freq)
657 return 1;
658 return 0;
659 }
660
661
662 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
663 {
664 const struct hostapd_hw_modes *mode = NULL, *modes;
665 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
666 const u8 *rate_ie;
667 int i, j, k;
668
669 if (bss->freq == 0)
670 return 1; /* Cannot do matching without knowing band */
671
672 modes = wpa_s->hw.modes;
673 if (modes == NULL) {
674 /*
675 * The driver does not provide any additional information
676 * about the utilized hardware, so allow the connection attempt
677 * to continue.
678 */
679 return 1;
680 }
681
682 for (i = 0; i < wpa_s->hw.num_modes; i++) {
683 for (j = 0; j < modes[i].num_channels; j++) {
684 int freq = modes[i].channels[j].freq;
685 if (freq == bss->freq) {
686 if (mode &&
687 mode->mode == HOSTAPD_MODE_IEEE80211G)
688 break; /* do not allow 802.11b replace
689 * 802.11g */
690 mode = &modes[i];
691 break;
692 }
693 }
694 }
695
696 if (mode == NULL)
697 return 0;
698
699 for (i = 0; i < (int) sizeof(scan_ie); i++) {
700 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
701 if (rate_ie == NULL)
702 continue;
703
704 for (j = 2; j < rate_ie[1] + 2; j++) {
705 int flagged = !!(rate_ie[j] & 0x80);
706 int r = (rate_ie[j] & 0x7f) * 5;
707
708 /*
709 * IEEE Std 802.11n-2009 7.3.2.2:
710 * The new BSS Membership selector value is encoded
711 * like a legacy basic rate, but it is not a rate and
712 * only indicates if the BSS members are required to
713 * support the mandatory features of Clause 20 [HT PHY]
714 * in order to join the BSS.
715 */
716 if (flagged && ((rate_ie[j] & 0x7f) ==
717 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
718 if (!ht_supported(mode)) {
719 wpa_dbg(wpa_s, MSG_DEBUG,
720 " hardware does not support "
721 "HT PHY");
722 return 0;
723 }
724 continue;
725 }
726
727 /* There's also a VHT selector for 802.11ac */
728 if (flagged && ((rate_ie[j] & 0x7f) ==
729 BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
730 if (!vht_supported(mode)) {
731 wpa_dbg(wpa_s, MSG_DEBUG,
732 " hardware does not support "
733 "VHT PHY");
734 return 0;
735 }
736 continue;
737 }
738
739 if (!flagged)
740 continue;
741
742 /* check for legacy basic rates */
743 for (k = 0; k < mode->num_rates; k++) {
744 if (mode->rates[k] == r)
745 break;
746 }
747 if (k == mode->num_rates) {
748 /*
749 * IEEE Std 802.11-2007 7.3.2.2 demands that in
750 * order to join a BSS all required rates
751 * have to be supported by the hardware.
752 */
753 wpa_dbg(wpa_s, MSG_DEBUG,
754 " hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)",
755 r / 10, r % 10,
756 bss->freq, mode->mode, mode->num_rates);
757 return 0;
758 }
759 }
760 }
761
762 return 1;
763 }
764
765
766 /*
767 * Test whether BSS is in an ESS.
768 * This is done differently in DMG (60 GHz) and non-DMG bands
769 */
770 static int bss_is_ess(struct wpa_bss *bss)
771 {
772 if (bss_is_dmg(bss)) {
773 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
774 IEEE80211_CAP_DMG_AP;
775 }
776
777 return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
778 IEEE80211_CAP_ESS);
779 }
780
781
782 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
783 {
784 size_t i;
785
786 for (i = 0; i < ETH_ALEN; i++) {
787 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
788 return 0;
789 }
790 return 1;
791 }
792
793
794 static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
795 {
796 size_t i;
797
798 for (i = 0; i < num; i++) {
799 const u8 *a = list + i * ETH_ALEN * 2;
800 const u8 *m = a + ETH_ALEN;
801
802 if (match_mac_mask(a, addr, m))
803 return 1;
804 }
805 return 0;
806 }
807
808
809 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
810 int i, struct wpa_bss *bss,
811 struct wpa_ssid *group,
812 int only_first_ssid)
813 {
814 u8 wpa_ie_len, rsn_ie_len;
815 int wpa;
816 struct wpa_blacklist *e;
817 const u8 *ie;
818 struct wpa_ssid *ssid;
819 int osen;
820
821 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
822 wpa_ie_len = ie ? ie[1] : 0;
823
824 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
825 rsn_ie_len = ie ? ie[1] : 0;
826
827 ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
828 osen = ie != NULL;
829
830 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
831 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
832 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
833 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
834 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
835 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
836 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
837 " p2p" : "",
838 osen ? " osen=1" : "");
839
840 e = wpa_blacklist_get(wpa_s, bss->bssid);
841 if (e) {
842 int limit = 1;
843 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
844 /*
845 * When only a single network is enabled, we can
846 * trigger blacklisting on the first failure. This
847 * should not be done with multiple enabled networks to
848 * avoid getting forced to move into a worse ESS on
849 * single error if there are no other BSSes of the
850 * current ESS.
851 */
852 limit = 0;
853 }
854 if (e->count > limit) {
855 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
856 "(count=%d limit=%d)", e->count, limit);
857 return NULL;
858 }
859 }
860
861 if (bss->ssid_len == 0) {
862 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
863 return NULL;
864 }
865
866 if (disallowed_bssid(wpa_s, bss->bssid)) {
867 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed");
868 return NULL;
869 }
870
871 if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
872 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed");
873 return NULL;
874 }
875
876 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
877
878 for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
879 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
880 int res;
881
882 if (wpas_network_disabled(wpa_s, ssid)) {
883 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
884 continue;
885 }
886
887 res = wpas_temp_disabled(wpa_s, ssid);
888 if (res > 0) {
889 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled "
890 "temporarily for %d second(s)", res);
891 continue;
892 }
893
894 #ifdef CONFIG_WPS
895 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
896 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
897 "(WPS)");
898 continue;
899 }
900
901 if (wpa && ssid->ssid_len == 0 &&
902 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
903 check_ssid = 0;
904
905 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
906 /* Only allow wildcard SSID match if an AP
907 * advertises active WPS operation that matches
908 * with our mode. */
909 check_ssid = 1;
910 if (ssid->ssid_len == 0 &&
911 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
912 check_ssid = 0;
913 }
914 #endif /* CONFIG_WPS */
915
916 if (ssid->bssid_set && ssid->ssid_len == 0 &&
917 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
918 check_ssid = 0;
919
920 if (check_ssid &&
921 (bss->ssid_len != ssid->ssid_len ||
922 os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
923 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
924 continue;
925 }
926
927 if (ssid->bssid_set &&
928 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
929 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
930 continue;
931 }
932
933 /* check blacklist */
934 if (ssid->num_bssid_blacklist &&
935 addr_in_list(bss->bssid, ssid->bssid_blacklist,
936 ssid->num_bssid_blacklist)) {
937 wpa_dbg(wpa_s, MSG_DEBUG,
938 " skip - BSSID blacklisted");
939 continue;
940 }
941
942 /* if there is a whitelist, only accept those APs */
943 if (ssid->num_bssid_whitelist &&
944 !addr_in_list(bss->bssid, ssid->bssid_whitelist,
945 ssid->num_bssid_whitelist)) {
946 wpa_dbg(wpa_s, MSG_DEBUG,
947 " skip - BSSID not in whitelist");
948 continue;
949 }
950
951 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
952 continue;
953
954 if (!osen && !wpa &&
955 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
956 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
957 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
958 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
959 "not allowed");
960 continue;
961 }
962
963 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
964 has_wep_key(ssid)) {
965 wpa_dbg(wpa_s, MSG_DEBUG, " skip - ignore WPA/WPA2 AP for WEP network block");
966 continue;
967 }
968
969 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
970 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-OSEN network "
971 "not allowed");
972 continue;
973 }
974
975 if (!wpa_supplicant_match_privacy(bss, ssid)) {
976 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
977 "mismatch");
978 continue;
979 }
980
981 if (!bss_is_ess(bss)) {
982 wpa_dbg(wpa_s, MSG_DEBUG, " skip - not ESS network");
983 continue;
984 }
985
986 if (!freq_allowed(ssid->freq_list, bss->freq)) {
987 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
988 "allowed");
989 continue;
990 }
991
992 if (!rate_match(wpa_s, bss)) {
993 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do "
994 "not match");
995 continue;
996 }
997
998 #ifdef CONFIG_P2P
999 if (ssid->p2p_group &&
1000 !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
1001 !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
1002 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P IE seen");
1003 continue;
1004 }
1005
1006 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
1007 struct wpabuf *p2p_ie;
1008 u8 dev_addr[ETH_ALEN];
1009
1010 ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
1011 if (ie == NULL) {
1012 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P element");
1013 continue;
1014 }
1015 p2p_ie = wpa_bss_get_vendor_ie_multi(
1016 bss, P2P_IE_VENDOR_TYPE);
1017 if (p2p_ie == NULL) {
1018 wpa_dbg(wpa_s, MSG_DEBUG, " skip - could not fetch P2P element");
1019 continue;
1020 }
1021
1022 if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
1023 || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
1024 ETH_ALEN) != 0) {
1025 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no matching GO P2P Device Address in P2P element");
1026 wpabuf_free(p2p_ie);
1027 continue;
1028 }
1029 wpabuf_free(p2p_ie);
1030 }
1031
1032 /*
1033 * TODO: skip the AP if its P2P IE has Group Formation
1034 * bit set in the P2P Group Capability Bitmap and we
1035 * are not in Group Formation with that device.
1036 */
1037 #endif /* CONFIG_P2P */
1038
1039 /* Matching configuration found */
1040 return ssid;
1041 }
1042
1043 /* No matching configuration found */
1044 return NULL;
1045 }
1046
1047
1048 static struct wpa_bss *
1049 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
1050 struct wpa_ssid *group,
1051 struct wpa_ssid **selected_ssid,
1052 int only_first_ssid)
1053 {
1054 unsigned int i;
1055
1056 if (only_first_ssid)
1057 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
1058 group->id);
1059 else
1060 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
1061 group->priority);
1062
1063 for (i = 0; i < wpa_s->last_scan_res_used; i++) {
1064 struct wpa_bss *bss = wpa_s->last_scan_res[i];
1065 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
1066 only_first_ssid);
1067 if (!*selected_ssid)
1068 continue;
1069 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
1070 " ssid='%s'",
1071 MAC2STR(bss->bssid),
1072 wpa_ssid_txt(bss->ssid, bss->ssid_len));
1073 return bss;
1074 }
1075
1076 return NULL;
1077 }
1078
1079
1080 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1081 struct wpa_ssid **selected_ssid)
1082 {
1083 struct wpa_bss *selected = NULL;
1084 int prio;
1085 struct wpa_ssid *next_ssid = NULL;
1086 struct wpa_ssid *ssid;
1087
1088 if (wpa_s->last_scan_res == NULL ||
1089 wpa_s->last_scan_res_used == 0)
1090 return NULL; /* no scan results from last update */
1091
1092 if (wpa_s->next_ssid) {
1093 /* check that next_ssid is still valid */
1094 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1095 if (ssid == wpa_s->next_ssid)
1096 break;
1097 }
1098 next_ssid = ssid;
1099 wpa_s->next_ssid = NULL;
1100 }
1101
1102 while (selected == NULL) {
1103 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1104 if (next_ssid && next_ssid->priority ==
1105 wpa_s->conf->pssid[prio]->priority) {
1106 selected = wpa_supplicant_select_bss(
1107 wpa_s, next_ssid, selected_ssid, 1);
1108 if (selected)
1109 break;
1110 }
1111 selected = wpa_supplicant_select_bss(
1112 wpa_s, wpa_s->conf->pssid[prio],
1113 selected_ssid, 0);
1114 if (selected)
1115 break;
1116 }
1117
1118 if (selected == NULL && wpa_s->blacklist &&
1119 !wpa_s->countermeasures) {
1120 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1121 "blacklist and try again");
1122 wpa_blacklist_clear(wpa_s);
1123 wpa_s->blacklist_cleared++;
1124 } else if (selected == NULL)
1125 break;
1126 }
1127
1128 ssid = *selected_ssid;
1129 if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set &&
1130 !ssid->passphrase && !ssid->ext_psk) {
1131 const char *field_name, *txt = NULL;
1132
1133 wpa_dbg(wpa_s, MSG_DEBUG,
1134 "PSK/passphrase not yet available for the selected network");
1135
1136 wpas_notify_network_request(wpa_s, ssid,
1137 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL);
1138
1139 field_name = wpa_supplicant_ctrl_req_to_string(
1140 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt);
1141 if (field_name == NULL)
1142 return NULL;
1143
1144 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
1145
1146 selected = NULL;
1147 }
1148
1149 return selected;
1150 }
1151
1152
1153 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1154 int timeout_sec, int timeout_usec)
1155 {
1156 if (!wpa_supplicant_enabled_networks(wpa_s)) {
1157 /*
1158 * No networks are enabled; short-circuit request so
1159 * we don't wait timeout seconds before transitioning
1160 * to INACTIVE state.
1161 */
1162 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1163 "since there are no enabled networks");
1164 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1165 return;
1166 }
1167
1168 wpa_s->scan_for_connection = 1;
1169 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1170 }
1171
1172
1173 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1174 struct wpa_bss *selected,
1175 struct wpa_ssid *ssid)
1176 {
1177 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1178 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1179 "PBC session overlap");
1180 wpas_notify_wps_event_pbc_overlap(wpa_s);
1181 #ifdef CONFIG_P2P
1182 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1183 wpa_s->p2p_in_provisioning) {
1184 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1185 wpa_s, NULL);
1186 return -1;
1187 }
1188 #endif /* CONFIG_P2P */
1189
1190 #ifdef CONFIG_WPS
1191 wpas_wps_cancel(wpa_s);
1192 #endif /* CONFIG_WPS */
1193 return -1;
1194 }
1195
1196 wpa_msg(wpa_s, MSG_DEBUG,
1197 "Considering connect request: reassociate: %d selected: "
1198 MACSTR " bssid: " MACSTR " pending: " MACSTR
1199 " wpa_state: %s ssid=%p current_ssid=%p",
1200 wpa_s->reassociate, MAC2STR(selected->bssid),
1201 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1202 wpa_supplicant_state_txt(wpa_s->wpa_state),
1203 ssid, wpa_s->current_ssid);
1204
1205 /*
1206 * Do not trigger new association unless the BSSID has changed or if
1207 * reassociation is requested. If we are in process of associating with
1208 * the selected BSSID, do not trigger new attempt.
1209 */
1210 if (wpa_s->reassociate ||
1211 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1212 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1213 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1214 (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1215 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1216 0) ||
1217 (is_zero_ether_addr(wpa_s->pending_bssid) &&
1218 ssid != wpa_s->current_ssid)))) {
1219 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1220 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1221 return 0;
1222 }
1223 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1224 MAC2STR(selected->bssid));
1225 wpa_supplicant_associate(wpa_s, selected, ssid);
1226 } else {
1227 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1228 "connect with the selected AP");
1229 }
1230
1231 return 0;
1232 }
1233
1234
1235 static struct wpa_ssid *
1236 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1237 {
1238 int prio;
1239 struct wpa_ssid *ssid;
1240
1241 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1242 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1243 {
1244 if (wpas_network_disabled(wpa_s, ssid))
1245 continue;
1246 if (ssid->mode == IEEE80211_MODE_IBSS ||
1247 ssid->mode == IEEE80211_MODE_AP ||
1248 ssid->mode == IEEE80211_MODE_MESH)
1249 return ssid;
1250 }
1251 }
1252 return NULL;
1253 }
1254
1255
1256 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1257 * on BSS added and BSS changed events */
1258 static void wpa_supplicant_rsn_preauth_scan_results(
1259 struct wpa_supplicant *wpa_s)
1260 {
1261 struct wpa_bss *bss;
1262
1263 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1264 return;
1265
1266 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1267 const u8 *ssid, *rsn;
1268
1269 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1270 if (ssid == NULL)
1271 continue;
1272
1273 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1274 if (rsn == NULL)
1275 continue;
1276
1277 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1278 }
1279
1280 }
1281
1282
1283 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1284 struct wpa_bss *selected,
1285 struct wpa_ssid *ssid)
1286 {
1287 struct wpa_bss *current_bss = NULL;
1288 #ifndef CONFIG_NO_ROAMING
1289 int min_diff;
1290 #endif /* CONFIG_NO_ROAMING */
1291
1292 if (wpa_s->reassociate)
1293 return 1; /* explicit request to reassociate */
1294 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1295 return 1; /* we are not associated; continue */
1296 if (wpa_s->current_ssid == NULL)
1297 return 1; /* unknown current SSID */
1298 if (wpa_s->current_ssid != ssid)
1299 return 1; /* different network block */
1300
1301 if (wpas_driver_bss_selection(wpa_s))
1302 return 0; /* Driver-based roaming */
1303
1304 if (wpa_s->current_ssid->ssid)
1305 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1306 wpa_s->current_ssid->ssid,
1307 wpa_s->current_ssid->ssid_len);
1308 if (!current_bss)
1309 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1310
1311 if (!current_bss)
1312 return 1; /* current BSS not seen in scan results */
1313
1314 if (current_bss == selected)
1315 return 0;
1316
1317 if (selected->last_update_idx > current_bss->last_update_idx)
1318 return 1; /* current BSS not seen in the last scan */
1319
1320 #ifndef CONFIG_NO_ROAMING
1321 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1322 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1323 " level=%d snr=%d est_throughput=%u",
1324 MAC2STR(current_bss->bssid), current_bss->level,
1325 current_bss->snr, current_bss->est_throughput);
1326 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1327 " level=%d snr=%d est_throughput=%u",
1328 MAC2STR(selected->bssid), selected->level,
1329 selected->snr, selected->est_throughput);
1330
1331 if (wpa_s->current_ssid->bssid_set &&
1332 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1333 0) {
1334 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1335 "has preferred BSSID");
1336 return 1;
1337 }
1338
1339 if (selected->est_throughput > current_bss->est_throughput + 5000) {
1340 wpa_dbg(wpa_s, MSG_DEBUG,
1341 "Allow reassociation - selected BSS has better estimated throughput");
1342 return 1;
1343 }
1344
1345 if (current_bss->level < 0 && current_bss->level > selected->level) {
1346 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1347 "signal level");
1348 return 0;
1349 }
1350
1351 min_diff = 2;
1352 if (current_bss->level < 0) {
1353 if (current_bss->level < -85)
1354 min_diff = 1;
1355 else if (current_bss->level < -80)
1356 min_diff = 2;
1357 else if (current_bss->level < -75)
1358 min_diff = 3;
1359 else if (current_bss->level < -70)
1360 min_diff = 4;
1361 else
1362 min_diff = 5;
1363 }
1364 if (abs(current_bss->level - selected->level) < min_diff) {
1365 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1366 "in signal level");
1367 return 0;
1368 }
1369
1370 return 1;
1371 #else /* CONFIG_NO_ROAMING */
1372 return 0;
1373 #endif /* CONFIG_NO_ROAMING */
1374 }
1375
1376
1377 /* Return != 0 if no scan results could be fetched or if scan results should not
1378 * be shared with other virtual interfaces. */
1379 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1380 union wpa_event_data *data,
1381 int own_request)
1382 {
1383 struct wpa_scan_results *scan_res = NULL;
1384 int ret = 0;
1385 int ap = 0;
1386 #ifndef CONFIG_NO_RANDOM_POOL
1387 size_t i, num;
1388 #endif /* CONFIG_NO_RANDOM_POOL */
1389
1390 #ifdef CONFIG_AP
1391 if (wpa_s->ap_iface)
1392 ap = 1;
1393 #endif /* CONFIG_AP */
1394
1395 wpa_supplicant_notify_scanning(wpa_s, 0);
1396
1397 scan_res = wpa_supplicant_get_scan_results(wpa_s,
1398 data ? &data->scan_info :
1399 NULL, 1);
1400 if (scan_res == NULL) {
1401 if (wpa_s->conf->ap_scan == 2 || ap ||
1402 wpa_s->scan_res_handler == scan_only_handler)
1403 return -1;
1404 if (!own_request)
1405 return -1;
1406 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1407 "scanning again");
1408 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1409 ret = -1;
1410 goto scan_work_done;
1411 }
1412
1413 #ifndef CONFIG_NO_RANDOM_POOL
1414 num = scan_res->num;
1415 if (num > 10)
1416 num = 10;
1417 for (i = 0; i < num; i++) {
1418 u8 buf[5];
1419 struct wpa_scan_res *res = scan_res->res[i];
1420 buf[0] = res->bssid[5];
1421 buf[1] = res->qual & 0xff;
1422 buf[2] = res->noise & 0xff;
1423 buf[3] = res->level & 0xff;
1424 buf[4] = res->tsf & 0xff;
1425 random_add_randomness(buf, sizeof(buf));
1426 }
1427 #endif /* CONFIG_NO_RANDOM_POOL */
1428
1429 if (own_request && wpa_s->scan_res_handler &&
1430 (wpa_s->own_scan_running || !wpa_s->radio->external_scan_running)) {
1431 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1432 struct wpa_scan_results *scan_res);
1433
1434 scan_res_handler = wpa_s->scan_res_handler;
1435 wpa_s->scan_res_handler = NULL;
1436 scan_res_handler(wpa_s, scan_res);
1437 ret = -2;
1438 goto scan_work_done;
1439 }
1440
1441 if (ap) {
1442 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1443 #ifdef CONFIG_AP
1444 if (wpa_s->ap_iface->scan_cb)
1445 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1446 #endif /* CONFIG_AP */
1447 goto scan_work_done;
1448 }
1449
1450 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1451 wpa_s->own_scan_running, wpa_s->radio->external_scan_running);
1452 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1453 wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1454 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1455 wpa_s->manual_scan_id);
1456 wpa_s->manual_scan_use_id = 0;
1457 } else {
1458 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1459 }
1460 wpas_notify_scan_results(wpa_s);
1461
1462 wpas_notify_scan_done(wpa_s, 1);
1463
1464 if (!wpa_s->own_scan_running && wpa_s->radio->external_scan_running) {
1465 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1466 wpa_scan_results_free(scan_res);
1467 return 0;
1468 }
1469
1470 if (wnm_scan_process(wpa_s, 1) > 0)
1471 goto scan_work_done;
1472
1473 if (sme_proc_obss_scan(wpa_s) > 0)
1474 goto scan_work_done;
1475
1476 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1477 goto scan_work_done;
1478
1479 if (autoscan_notify_scan(wpa_s, scan_res))
1480 goto scan_work_done;
1481
1482 if (wpa_s->disconnected) {
1483 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1484 goto scan_work_done;
1485 }
1486
1487 if (!wpas_driver_bss_selection(wpa_s) &&
1488 bgscan_notify_scan(wpa_s, scan_res) == 1)
1489 goto scan_work_done;
1490
1491 wpas_wps_update_ap_info(wpa_s, scan_res);
1492
1493 wpa_scan_results_free(scan_res);
1494
1495 if (wpa_s->scan_work) {
1496 struct wpa_radio_work *work = wpa_s->scan_work;
1497 wpa_s->scan_work = NULL;
1498 radio_work_done(work);
1499 }
1500
1501 return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1502
1503 scan_work_done:
1504 wpa_scan_results_free(scan_res);
1505 if (wpa_s->scan_work) {
1506 struct wpa_radio_work *work = wpa_s->scan_work;
1507 wpa_s->scan_work = NULL;
1508 radio_work_done(work);
1509 }
1510 return ret;
1511 }
1512
1513
1514 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1515 int new_scan, int own_request)
1516 {
1517 struct wpa_bss *selected;
1518 struct wpa_ssid *ssid = NULL;
1519 int time_to_reenable = wpas_reenabled_network_time(wpa_s);
1520
1521 if (time_to_reenable > 0) {
1522 wpa_dbg(wpa_s, MSG_DEBUG,
1523 "Postpone network selection by %d seconds since all networks are disabled",
1524 time_to_reenable);
1525 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
1526 eloop_register_timeout(time_to_reenable, 0,
1527 wpas_network_reenabled, wpa_s, NULL);
1528 return 0;
1529 }
1530
1531 if (wpa_s->p2p_mgmt)
1532 return 0; /* no normal connection on p2p_mgmt interface */
1533
1534 selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1535
1536 if (selected) {
1537 int skip;
1538 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1539 if (skip) {
1540 if (new_scan)
1541 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1542 return 0;
1543 }
1544
1545 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1546 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1547 return -1;
1548 }
1549 if (new_scan)
1550 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1551 /*
1552 * Do not notify other virtual radios of scan results since we do not
1553 * want them to start other associations at the same time.
1554 */
1555 return 1;
1556 } else {
1557 #ifdef CONFIG_MESH
1558 if (wpa_s->ifmsh) {
1559 wpa_msg(wpa_s, MSG_INFO,
1560 "Avoiding join because we already joined a mesh group");
1561 return 0;
1562 }
1563 #endif /* CONFIG_MESH */
1564 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1565 ssid = wpa_supplicant_pick_new_network(wpa_s);
1566 if (ssid) {
1567 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1568 wpa_supplicant_associate(wpa_s, NULL, ssid);
1569 if (new_scan)
1570 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1571 } else if (own_request) {
1572 /*
1573 * No SSID found. If SCAN results are as a result of
1574 * own scan request and not due to a scan request on
1575 * another shared interface, try another scan.
1576 */
1577 int timeout_sec = wpa_s->scan_interval;
1578 int timeout_usec = 0;
1579 #ifdef CONFIG_P2P
1580 int res;
1581
1582 res = wpas_p2p_scan_no_go_seen(wpa_s);
1583 if (res == 2)
1584 return 2;
1585 if (res == 1)
1586 return 0;
1587
1588 if (wpa_s->p2p_in_provisioning ||
1589 wpa_s->show_group_started ||
1590 wpa_s->p2p_in_invitation) {
1591 /*
1592 * Use shorter wait during P2P Provisioning
1593 * state and during P2P join-a-group operation
1594 * to speed up group formation.
1595 */
1596 timeout_sec = 0;
1597 timeout_usec = 250000;
1598 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1599 timeout_usec);
1600 return 0;
1601 }
1602 #endif /* CONFIG_P2P */
1603 #ifdef CONFIG_INTERWORKING
1604 if (wpa_s->conf->auto_interworking &&
1605 wpa_s->conf->interworking &&
1606 wpa_s->conf->cred) {
1607 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1608 "start ANQP fetch since no matching "
1609 "networks found");
1610 wpa_s->network_select = 1;
1611 wpa_s->auto_network_select = 1;
1612 interworking_start_fetch_anqp(wpa_s);
1613 return 1;
1614 }
1615 #endif /* CONFIG_INTERWORKING */
1616 #ifdef CONFIG_WPS
1617 if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1618 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1619 timeout_sec = 0;
1620 timeout_usec = 500000;
1621 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1622 timeout_usec);
1623 return 0;
1624 }
1625 #endif /* CONFIG_WPS */
1626 if (wpa_supplicant_req_sched_scan(wpa_s))
1627 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1628 timeout_usec);
1629
1630 wpa_msg_ctrl(wpa_s, MSG_INFO,
1631 WPA_EVENT_NETWORK_NOT_FOUND);
1632 }
1633 }
1634 return 0;
1635 }
1636
1637
1638 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1639 union wpa_event_data *data)
1640 {
1641 struct wpa_supplicant *ifs;
1642 int res;
1643
1644 res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1645 if (res == 2) {
1646 /*
1647 * Interface may have been removed, so must not dereference
1648 * wpa_s after this.
1649 */
1650 return 1;
1651 }
1652 if (res != 0) {
1653 /*
1654 * If no scan results could be fetched, then no need to
1655 * notify those interfaces that did not actually request
1656 * this scan. Similarly, if scan results started a new operation on this
1657 * interface, do not notify other interfaces to avoid concurrent
1658 * operations during a connection attempt.
1659 */
1660 return 0;
1661 }
1662
1663 /*
1664 * Check other interfaces to see if they share the same radio. If
1665 * so, they get updated with this same scan info.
1666 */
1667 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1668 radio_list) {
1669 if (ifs != wpa_s) {
1670 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1671 "sibling", ifs->ifname);
1672 _wpa_supplicant_event_scan_results(ifs, data, 0);
1673 }
1674 }
1675
1676 return 0;
1677 }
1678
1679 #endif /* CONFIG_NO_SCAN_PROCESSING */
1680
1681
1682 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1683 {
1684 #ifdef CONFIG_NO_SCAN_PROCESSING
1685 return -1;
1686 #else /* CONFIG_NO_SCAN_PROCESSING */
1687 struct os_reltime now;
1688
1689 if (wpa_s->last_scan_res_used == 0)
1690 return -1;
1691
1692 os_get_reltime(&now);
1693 if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1694 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1695 return -1;
1696 }
1697
1698 return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1699 #endif /* CONFIG_NO_SCAN_PROCESSING */
1700 }
1701
1702 #ifdef CONFIG_WNM
1703
1704 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1705 {
1706 struct wpa_supplicant *wpa_s = eloop_ctx;
1707
1708 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1709 return;
1710
1711 if (!wpa_s->no_keep_alive) {
1712 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1713 MAC2STR(wpa_s->bssid));
1714 /* TODO: could skip this if normal data traffic has been sent */
1715 /* TODO: Consider using some more appropriate data frame for
1716 * this */
1717 if (wpa_s->l2)
1718 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1719 (u8 *) "", 0);
1720 }
1721
1722 #ifdef CONFIG_SME
1723 if (wpa_s->sme.bss_max_idle_period) {
1724 unsigned int msec;
1725 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1726 if (msec > 100)
1727 msec -= 100;
1728 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1729 wnm_bss_keep_alive, wpa_s, NULL);
1730 }
1731 #endif /* CONFIG_SME */
1732 }
1733
1734
1735 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1736 const u8 *ies, size_t ies_len)
1737 {
1738 struct ieee802_11_elems elems;
1739
1740 if (ies == NULL)
1741 return;
1742
1743 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1744 return;
1745
1746 #ifdef CONFIG_SME
1747 if (elems.bss_max_idle_period) {
1748 unsigned int msec;
1749 wpa_s->sme.bss_max_idle_period =
1750 WPA_GET_LE16(elems.bss_max_idle_period);
1751 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1752 "TU)%s", wpa_s->sme.bss_max_idle_period,
1753 (elems.bss_max_idle_period[2] & 0x01) ?
1754 " (protected keep-live required)" : "");
1755 if (wpa_s->sme.bss_max_idle_period == 0)
1756 wpa_s->sme.bss_max_idle_period = 1;
1757 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1758 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1759 /* msec times 1000 */
1760 msec = wpa_s->sme.bss_max_idle_period * 1024;
1761 if (msec > 100)
1762 msec -= 100;
1763 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1764 wnm_bss_keep_alive, wpa_s,
1765 NULL);
1766 }
1767 }
1768 #endif /* CONFIG_SME */
1769 }
1770
1771 #endif /* CONFIG_WNM */
1772
1773
1774 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1775 {
1776 #ifdef CONFIG_WNM
1777 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1778 #endif /* CONFIG_WNM */
1779 }
1780
1781
1782 #ifdef CONFIG_INTERWORKING
1783
1784 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1785 size_t len)
1786 {
1787 int res;
1788
1789 wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1790 res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1791 if (res) {
1792 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1793 }
1794
1795 return res;
1796 }
1797
1798
1799 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1800 const u8 *ies, size_t ies_len)
1801 {
1802 struct ieee802_11_elems elems;
1803
1804 if (ies == NULL)
1805 return;
1806
1807 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1808 return;
1809
1810 if (elems.qos_map_set) {
1811 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1812 elems.qos_map_set_len);
1813 }
1814 }
1815
1816 #endif /* CONFIG_INTERWORKING */
1817
1818
1819 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1820 union wpa_event_data *data)
1821 {
1822 int l, len, found = 0, wpa_found, rsn_found;
1823 const u8 *p;
1824 #ifdef CONFIG_IEEE80211R
1825 u8 bssid[ETH_ALEN];
1826 #endif /* CONFIG_IEEE80211R */
1827
1828 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1829 if (data->assoc_info.req_ies)
1830 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1831 data->assoc_info.req_ies_len);
1832 if (data->assoc_info.resp_ies) {
1833 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1834 data->assoc_info.resp_ies_len);
1835 #ifdef CONFIG_TDLS
1836 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1837 data->assoc_info.resp_ies_len);
1838 #endif /* CONFIG_TDLS */
1839 #ifdef CONFIG_WNM
1840 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1841 data->assoc_info.resp_ies_len);
1842 #endif /* CONFIG_WNM */
1843 #ifdef CONFIG_INTERWORKING
1844 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1845 data->assoc_info.resp_ies_len);
1846 #endif /* CONFIG_INTERWORKING */
1847 }
1848 if (data->assoc_info.beacon_ies)
1849 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1850 data->assoc_info.beacon_ies,
1851 data->assoc_info.beacon_ies_len);
1852 if (data->assoc_info.freq)
1853 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1854 data->assoc_info.freq);
1855
1856 p = data->assoc_info.req_ies;
1857 l = data->assoc_info.req_ies_len;
1858
1859 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1860 while (p && l >= 2) {
1861 len = p[1] + 2;
1862 if (len > l) {
1863 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1864 p, l);
1865 break;
1866 }
1867 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1868 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1869 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1870 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1871 break;
1872 found = 1;
1873 wpa_find_assoc_pmkid(wpa_s);
1874 break;
1875 }
1876 l -= len;
1877 p += len;
1878 }
1879 if (!found && data->assoc_info.req_ies)
1880 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1881
1882 #ifdef CONFIG_IEEE80211R
1883 #ifdef CONFIG_SME
1884 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1885 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1886 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1887 data->assoc_info.resp_ies,
1888 data->assoc_info.resp_ies_len,
1889 bssid) < 0) {
1890 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1891 "Reassociation Response failed");
1892 wpa_supplicant_deauthenticate(
1893 wpa_s, WLAN_REASON_INVALID_IE);
1894 return -1;
1895 }
1896 }
1897
1898 p = data->assoc_info.resp_ies;
1899 l = data->assoc_info.resp_ies_len;
1900
1901 #ifdef CONFIG_WPS_STRICT
1902 if (p && wpa_s->current_ssid &&
1903 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1904 struct wpabuf *wps;
1905 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1906 if (wps == NULL) {
1907 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1908 "include WPS IE in (Re)Association Response");
1909 return -1;
1910 }
1911
1912 if (wps_validate_assoc_resp(wps) < 0) {
1913 wpabuf_free(wps);
1914 wpa_supplicant_deauthenticate(
1915 wpa_s, WLAN_REASON_INVALID_IE);
1916 return -1;
1917 }
1918 wpabuf_free(wps);
1919 }
1920 #endif /* CONFIG_WPS_STRICT */
1921
1922 /* Go through the IEs and make a copy of the MDIE, if present. */
1923 while (p && l >= 2) {
1924 len = p[1] + 2;
1925 if (len > l) {
1926 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1927 p, l);
1928 break;
1929 }
1930 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1931 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1932 wpa_s->sme.ft_used = 1;
1933 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1934 MOBILITY_DOMAIN_ID_LEN);
1935 break;
1936 }
1937 l -= len;
1938 p += len;
1939 }
1940 #endif /* CONFIG_SME */
1941
1942 /* Process FT when SME is in the driver */
1943 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1944 wpa_ft_is_completed(wpa_s->wpa)) {
1945 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1946 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1947 data->assoc_info.resp_ies,
1948 data->assoc_info.resp_ies_len,
1949 bssid) < 0) {
1950 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1951 "Reassociation Response failed");
1952 wpa_supplicant_deauthenticate(
1953 wpa_s, WLAN_REASON_INVALID_IE);
1954 return -1;
1955 }
1956 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1957 }
1958
1959 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1960 data->assoc_info.resp_ies_len);
1961 #endif /* CONFIG_IEEE80211R */
1962
1963 /* WPA/RSN IE from Beacon/ProbeResp */
1964 p = data->assoc_info.beacon_ies;
1965 l = data->assoc_info.beacon_ies_len;
1966
1967 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1968 */
1969 wpa_found = rsn_found = 0;
1970 while (p && l >= 2) {
1971 len = p[1] + 2;
1972 if (len > l) {
1973 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1974 p, l);
1975 break;
1976 }
1977 if (!wpa_found &&
1978 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1979 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1980 wpa_found = 1;
1981 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1982 }
1983
1984 if (!rsn_found &&
1985 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1986 rsn_found = 1;
1987 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1988 }
1989
1990 l -= len;
1991 p += len;
1992 }
1993
1994 if (!wpa_found && data->assoc_info.beacon_ies)
1995 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1996 if (!rsn_found && data->assoc_info.beacon_ies)
1997 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1998 if (wpa_found || rsn_found)
1999 wpa_s->ap_ies_from_associnfo = 1;
2000
2001 #ifdef CONFIG_FST
2002 wpabuf_free(wpa_s->received_mb_ies);
2003 wpa_s->received_mb_ies = NULL;
2004 if (wpa_s->fst) {
2005 struct mb_ies_info mb_ies;
2006
2007 wpa_printf(MSG_DEBUG, "Looking for MB IE");
2008 if (!mb_ies_info_by_ies(&mb_ies, data->assoc_info.resp_ies,
2009 data->assoc_info.resp_ies_len))
2010 wpa_s->received_mb_ies = mb_ies_by_info(&mb_ies);
2011 }
2012 #endif /* CONFIG_FST */
2013
2014 if (wpa_s->assoc_freq && data->assoc_info.freq &&
2015 wpa_s->assoc_freq != data->assoc_info.freq) {
2016 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
2017 "%u to %u MHz",
2018 wpa_s->assoc_freq, data->assoc_info.freq);
2019 wpa_supplicant_update_scan_results(wpa_s);
2020 }
2021
2022 wpa_s->assoc_freq = data->assoc_info.freq;
2023
2024 return 0;
2025 }
2026
2027
2028 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
2029 {
2030 const u8 *bss_wpa = NULL, *bss_rsn = NULL;
2031
2032 if (!wpa_s->current_bss || !wpa_s->current_ssid)
2033 return -1;
2034
2035 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
2036 return 0;
2037
2038 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
2039 WPA_IE_VENDOR_TYPE);
2040 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
2041
2042 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
2043 bss_wpa ? 2 + bss_wpa[1] : 0) ||
2044 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
2045 bss_rsn ? 2 + bss_rsn[1] : 0))
2046 return -1;
2047
2048 return 0;
2049 }
2050
2051
2052 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
2053 union wpa_event_data *data)
2054 {
2055 u8 bssid[ETH_ALEN];
2056 int ft_completed;
2057
2058 #ifdef CONFIG_AP
2059 if (wpa_s->ap_iface) {
2060 if (!data)
2061 return;
2062 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
2063 data->assoc_info.addr,
2064 data->assoc_info.req_ies,
2065 data->assoc_info.req_ies_len,
2066 data->assoc_info.reassoc);
2067 return;
2068 }
2069 #endif /* CONFIG_AP */
2070
2071 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
2072
2073 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
2074 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
2075 return;
2076
2077 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
2078 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
2079 wpa_supplicant_deauthenticate(
2080 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2081 return;
2082 }
2083
2084 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
2085 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
2086 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
2087 MACSTR, MAC2STR(bssid));
2088 random_add_randomness(bssid, ETH_ALEN);
2089 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
2090 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2091 wpas_notify_bssid_changed(wpa_s);
2092
2093 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
2094 wpa_clear_keys(wpa_s, bssid);
2095 }
2096 if (wpa_supplicant_select_config(wpa_s) < 0) {
2097 wpa_supplicant_deauthenticate(
2098 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2099 return;
2100 }
2101
2102 if (wpa_s->conf->ap_scan == 1 &&
2103 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
2104 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
2105 wpa_msg(wpa_s, MSG_WARNING,
2106 "WPA/RSN IEs not updated");
2107 }
2108 }
2109
2110 #ifdef CONFIG_SME
2111 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
2112 wpa_s->sme.prev_bssid_set = 1;
2113 wpa_s->sme.last_unprot_disconnect.sec = 0;
2114 #endif /* CONFIG_SME */
2115
2116 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
2117 if (wpa_s->current_ssid) {
2118 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
2119 * initialized before association, but for other modes,
2120 * initialize PC/SC here, if the current configuration needs
2121 * smartcard or SIM/USIM. */
2122 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
2123 }
2124 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
2125 if (wpa_s->l2)
2126 l2_packet_notify_auth_start(wpa_s->l2);
2127
2128 /*
2129 * Set portEnabled first to FALSE in order to get EAP state machine out
2130 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2131 * state machine may transit to AUTHENTICATING state based on obsolete
2132 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2133 * AUTHENTICATED without ever giving chance to EAP state machine to
2134 * reset the state.
2135 */
2136 if (!ft_completed) {
2137 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2138 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2139 }
2140 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2141 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2142 /* 802.1X::portControl = Auto */
2143 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2144 wpa_s->eapol_received = 0;
2145 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2146 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2147 (wpa_s->current_ssid &&
2148 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2149 if (wpa_s->current_ssid &&
2150 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2151 (wpa_s->drv_flags &
2152 WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2153 /*
2154 * Set the key after having received joined-IBSS event
2155 * from the driver.
2156 */
2157 wpa_supplicant_set_wpa_none_key(wpa_s,
2158 wpa_s->current_ssid);
2159 }
2160 wpa_supplicant_cancel_auth_timeout(wpa_s);
2161 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2162 } else if (!ft_completed) {
2163 /* Timeout for receiving the first EAPOL packet */
2164 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2165 }
2166 wpa_supplicant_cancel_scan(wpa_s);
2167
2168 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2169 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2170 /*
2171 * We are done; the driver will take care of RSN 4-way
2172 * handshake.
2173 */
2174 wpa_supplicant_cancel_auth_timeout(wpa_s);
2175 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2176 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2177 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2178 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2179 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2180 /*
2181 * The driver will take care of RSN 4-way handshake, so we need
2182 * to allow EAPOL supplicant to complete its work without
2183 * waiting for WPA supplicant.
2184 */
2185 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2186 } else if (ft_completed) {
2187 /*
2188 * FT protocol completed - make sure EAPOL state machine ends
2189 * up in authenticated.
2190 */
2191 wpa_supplicant_cancel_auth_timeout(wpa_s);
2192 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2193 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2194 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2195 }
2196
2197 wpa_s->last_eapol_matches_bssid = 0;
2198
2199 if (wpa_s->pending_eapol_rx) {
2200 struct os_reltime now, age;
2201 os_get_reltime(&now);
2202 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2203 if (age.sec == 0 && age.usec < 100000 &&
2204 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2205 0) {
2206 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2207 "frame that was received just before "
2208 "association notification");
2209 wpa_supplicant_rx_eapol(
2210 wpa_s, wpa_s->pending_eapol_rx_src,
2211 wpabuf_head(wpa_s->pending_eapol_rx),
2212 wpabuf_len(wpa_s->pending_eapol_rx));
2213 }
2214 wpabuf_free(wpa_s->pending_eapol_rx);
2215 wpa_s->pending_eapol_rx = NULL;
2216 }
2217
2218 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2219 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2220 wpa_s->current_ssid &&
2221 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2222 /* Set static WEP keys again */
2223 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2224 }
2225
2226 #ifdef CONFIG_IBSS_RSN
2227 if (wpa_s->current_ssid &&
2228 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2229 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2230 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2231 wpa_s->ibss_rsn == NULL) {
2232 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2233 if (!wpa_s->ibss_rsn) {
2234 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2235 wpa_supplicant_deauthenticate(
2236 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2237 return;
2238 }
2239
2240 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2241 }
2242 #endif /* CONFIG_IBSS_RSN */
2243
2244 wpas_wps_notify_assoc(wpa_s, bssid);
2245
2246 if (data) {
2247 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2248 data->assoc_info.resp_ies_len,
2249 &data->assoc_info.wmm_params);
2250
2251 if (wpa_s->reassoc_same_bss)
2252 wmm_ac_restore_tspecs(wpa_s);
2253 }
2254 }
2255
2256
2257 static int disconnect_reason_recoverable(u16 reason_code)
2258 {
2259 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2260 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2261 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2262 }
2263
2264
2265 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2266 u16 reason_code,
2267 int locally_generated)
2268 {
2269 const u8 *bssid;
2270
2271 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2272 /*
2273 * At least Host AP driver and a Prism3 card seemed to be
2274 * generating streams of disconnected events when configuring
2275 * IBSS for WPA-None. Ignore them for now.
2276 */
2277 return;
2278 }
2279
2280 bssid = wpa_s->bssid;
2281 if (is_zero_ether_addr(bssid))
2282 bssid = wpa_s->pending_bssid;
2283
2284 if (!is_zero_ether_addr(bssid) ||
2285 wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2286 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2287 " reason=%d%s",
2288 MAC2STR(bssid), reason_code,
2289 locally_generated ? " locally_generated=1" : "");
2290 }
2291 }
2292
2293
2294 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2295 int locally_generated)
2296 {
2297 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2298 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2299 return 0; /* Not in 4-way handshake with PSK */
2300
2301 /*
2302 * It looks like connection was lost while trying to go through PSK
2303 * 4-way handshake. Filter out known disconnection cases that are caused
2304 * by something else than PSK mismatch to avoid confusing reports.
2305 */
2306
2307 if (locally_generated) {
2308 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2309 return 0;
2310 }
2311
2312 return 1;
2313 }
2314
2315
2316 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2317 u16 reason_code,
2318 int locally_generated)
2319 {
2320 const u8 *bssid;
2321 int authenticating;
2322 u8 prev_pending_bssid[ETH_ALEN];
2323 struct wpa_bss *fast_reconnect = NULL;
2324 struct wpa_ssid *fast_reconnect_ssid = NULL;
2325 struct wpa_ssid *last_ssid;
2326
2327 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2328 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2329
2330 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2331 /*
2332 * At least Host AP driver and a Prism3 card seemed to be
2333 * generating streams of disconnected events when configuring
2334 * IBSS for WPA-None. Ignore them for now.
2335 */
2336 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2337 "IBSS/WPA-None mode");
2338 return;
2339 }
2340
2341 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2342 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2343 "pre-shared key may be incorrect");
2344 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2345 return; /* P2P group removed */
2346 wpas_auth_failed(wpa_s, "WRONG_KEY");
2347 }
2348 if (!wpa_s->disconnected &&
2349 (!wpa_s->auto_reconnect_disabled ||
2350 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2351 wpas_wps_searching(wpa_s))) {
2352 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2353 "reconnect (wps=%d/%d wpa_state=%d)",
2354 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2355 wpas_wps_searching(wpa_s),
2356 wpa_s->wpa_state);
2357 if (wpa_s->wpa_state == WPA_COMPLETED &&
2358 wpa_s->current_ssid &&
2359 wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2360 !locally_generated &&
2361 disconnect_reason_recoverable(reason_code)) {
2362 /*
2363 * It looks like the AP has dropped association with
2364 * us, but could allow us to get back in. Try to
2365 * reconnect to the same BSS without full scan to save
2366 * time for some common cases.
2367 */
2368 fast_reconnect = wpa_s->current_bss;
2369 fast_reconnect_ssid = wpa_s->current_ssid;
2370 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2371 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2372 else
2373 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2374 "immediate scan");
2375 } else {
2376 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2377 "try to re-connect");
2378 wpa_s->reassociate = 0;
2379 wpa_s->disconnected = 1;
2380 wpa_supplicant_cancel_sched_scan(wpa_s);
2381 }
2382 bssid = wpa_s->bssid;
2383 if (is_zero_ether_addr(bssid))
2384 bssid = wpa_s->pending_bssid;
2385 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2386 wpas_connection_failed(wpa_s, bssid);
2387 wpa_sm_notify_disassoc(wpa_s->wpa);
2388 if (locally_generated)
2389 wpa_s->disconnect_reason = -reason_code;
2390 else
2391 wpa_s->disconnect_reason = reason_code;
2392 wpas_notify_disconnect_reason(wpa_s);
2393 if (wpa_supplicant_dynamic_keys(wpa_s)) {
2394 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2395 wpa_clear_keys(wpa_s, wpa_s->bssid);
2396 }
2397 last_ssid = wpa_s->current_ssid;
2398 wpa_supplicant_mark_disassoc(wpa_s);
2399
2400 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2401 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2402 wpa_s->current_ssid = last_ssid;
2403 }
2404
2405 if (fast_reconnect &&
2406 !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2407 !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2408 !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2409 fast_reconnect->ssid_len) &&
2410 !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2411 #ifndef CONFIG_NO_SCAN_PROCESSING
2412 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2413 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2414 fast_reconnect_ssid) < 0) {
2415 /* Recover through full scan */
2416 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2417 }
2418 #endif /* CONFIG_NO_SCAN_PROCESSING */
2419 } else if (fast_reconnect) {
2420 /*
2421 * Could not reconnect to the same BSS due to network being
2422 * disabled. Use a new scan to match the alternative behavior
2423 * above, i.e., to continue automatic reconnection attempt in a
2424 * way that enforces disabled network rules.
2425 */
2426 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2427 }
2428 }
2429
2430
2431 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2432 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2433 {
2434 struct wpa_supplicant *wpa_s = eloop_ctx;
2435
2436 if (!wpa_s->pending_mic_error_report)
2437 return;
2438
2439 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2440 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2441 wpa_s->pending_mic_error_report = 0;
2442 }
2443 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2444
2445
2446 static void
2447 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2448 union wpa_event_data *data)
2449 {
2450 int pairwise;
2451 struct os_reltime t;
2452
2453 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2454 pairwise = (data && data->michael_mic_failure.unicast);
2455 os_get_reltime(&t);
2456 if ((wpa_s->last_michael_mic_error.sec &&
2457 !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2458 wpa_s->pending_mic_error_report) {
2459 if (wpa_s->pending_mic_error_report) {
2460 /*
2461 * Send the pending MIC error report immediately since
2462 * we are going to start countermeasures and AP better
2463 * do the same.
2464 */
2465 wpa_sm_key_request(wpa_s->wpa, 1,
2466 wpa_s->pending_mic_error_pairwise);
2467 }
2468
2469 /* Send the new MIC error report immediately since we are going
2470 * to start countermeasures and AP better do the same.
2471 */
2472 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2473
2474 /* initialize countermeasures */
2475 wpa_s->countermeasures = 1;
2476
2477 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2478
2479 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2480
2481 /*
2482 * Need to wait for completion of request frame. We do not get
2483 * any callback for the message completion, so just wait a
2484 * short while and hope for the best. */
2485 os_sleep(0, 10000);
2486
2487 wpa_drv_set_countermeasures(wpa_s, 1);
2488 wpa_supplicant_deauthenticate(wpa_s,
2489 WLAN_REASON_MICHAEL_MIC_FAILURE);
2490 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2491 wpa_s, NULL);
2492 eloop_register_timeout(60, 0,
2493 wpa_supplicant_stop_countermeasures,
2494 wpa_s, NULL);
2495 /* TODO: mark the AP rejected for 60 second. STA is
2496 * allowed to associate with another AP.. */
2497 } else {
2498 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2499 if (wpa_s->mic_errors_seen) {
2500 /*
2501 * Reduce the effectiveness of Michael MIC error
2502 * reports as a means for attacking against TKIP if
2503 * more than one MIC failure is noticed with the same
2504 * PTK. We delay the transmission of the reports by a
2505 * random time between 0 and 60 seconds in order to
2506 * force the attacker wait 60 seconds before getting
2507 * the information on whether a frame resulted in a MIC
2508 * failure.
2509 */
2510 u8 rval[4];
2511 int sec;
2512
2513 if (os_get_random(rval, sizeof(rval)) < 0)
2514 sec = os_random() % 60;
2515 else
2516 sec = WPA_GET_BE32(rval) % 60;
2517 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2518 "report %d seconds", sec);
2519 wpa_s->pending_mic_error_report = 1;
2520 wpa_s->pending_mic_error_pairwise = pairwise;
2521 eloop_cancel_timeout(
2522 wpa_supplicant_delayed_mic_error_report,
2523 wpa_s, NULL);
2524 eloop_register_timeout(
2525 sec, os_random() % 1000000,
2526 wpa_supplicant_delayed_mic_error_report,
2527 wpa_s, NULL);
2528 } else {
2529 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2530 }
2531 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2532 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2533 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2534 }
2535 wpa_s->last_michael_mic_error = t;
2536 wpa_s->mic_errors_seen++;
2537 }
2538
2539
2540 #ifdef CONFIG_TERMINATE_ONLASTIF
2541 static int any_interfaces(struct wpa_supplicant *head)
2542 {
2543 struct wpa_supplicant *wpa_s;
2544
2545 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2546 if (!wpa_s->interface_removed)
2547 return 1;
2548 return 0;
2549 }
2550 #endif /* CONFIG_TERMINATE_ONLASTIF */
2551
2552
2553 static void
2554 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2555 union wpa_event_data *data)
2556 {
2557 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2558 return;
2559
2560 switch (data->interface_status.ievent) {
2561 case EVENT_INTERFACE_ADDED:
2562 if (!wpa_s->interface_removed)
2563 break;
2564 wpa_s->interface_removed = 0;
2565 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2566 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2567 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2568 "driver after interface was added");
2569 }
2570
2571 #ifdef CONFIG_P2P
2572 if (!wpa_s->global->p2p &&
2573 !wpa_s->global->p2p_disabled &&
2574 !wpa_s->conf->p2p_disabled &&
2575 (wpa_s->drv_flags &
2576 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
2577 wpas_p2p_add_p2pdev_interface(
2578 wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) {
2579 wpa_printf(MSG_INFO,
2580 "P2P: Failed to enable P2P Device interface");
2581 /* Try to continue without. P2P will be disabled. */
2582 }
2583 #endif /* CONFIG_P2P */
2584
2585 break;
2586 case EVENT_INTERFACE_REMOVED:
2587 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2588 wpa_s->interface_removed = 1;
2589 wpa_supplicant_mark_disassoc(wpa_s);
2590 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2591 l2_packet_deinit(wpa_s->l2);
2592 wpa_s->l2 = NULL;
2593
2594 #ifdef CONFIG_P2P
2595 if (wpa_s->global->p2p &&
2596 wpa_s->global->p2p_init_wpa_s->parent == wpa_s &&
2597 (wpa_s->drv_flags &
2598 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) {
2599 wpa_dbg(wpa_s, MSG_DEBUG,
2600 "Removing P2P Device interface");
2601 wpa_supplicant_remove_iface(
2602 wpa_s->global, wpa_s->global->p2p_init_wpa_s,
2603 0);
2604 wpa_s->global->p2p_init_wpa_s = NULL;
2605 }
2606 #endif /* CONFIG_P2P */
2607
2608 #ifdef CONFIG_TERMINATE_ONLASTIF
2609 /* check if last interface */
2610 if (!any_interfaces(wpa_s->global->ifaces))
2611 eloop_terminate();
2612 #endif /* CONFIG_TERMINATE_ONLASTIF */
2613 break;
2614 }
2615 }
2616
2617
2618 #ifdef CONFIG_PEERKEY
2619 static void
2620 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2621 union wpa_event_data *data)
2622 {
2623 if (data == NULL)
2624 return;
2625 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2626 }
2627 #endif /* CONFIG_PEERKEY */
2628
2629
2630 #ifdef CONFIG_TDLS
2631 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2632 union wpa_event_data *data)
2633 {
2634 if (data == NULL)
2635 return;
2636 switch (data->tdls.oper) {
2637 case TDLS_REQUEST_SETUP:
2638 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2639 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2640 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2641 else
2642 wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2643 break;
2644 case TDLS_REQUEST_TEARDOWN:
2645 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2646 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2647 data->tdls.reason_code);
2648 else
2649 wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2650 data->tdls.peer);
2651 break;
2652 case TDLS_REQUEST_DISCOVER:
2653 wpa_tdls_send_discovery_request(wpa_s->wpa,
2654 data->tdls.peer);
2655 break;
2656 }
2657 }
2658 #endif /* CONFIG_TDLS */
2659
2660
2661 #ifdef CONFIG_WNM
2662 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2663 union wpa_event_data *data)
2664 {
2665 if (data == NULL)
2666 return;
2667 switch (data->wnm.oper) {
2668 case WNM_OPER_SLEEP:
2669 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2670 "(action=%d, intval=%d)",
2671 data->wnm.sleep_action, data->wnm.sleep_intval);
2672 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2673 data->wnm.sleep_intval, NULL);
2674 break;
2675 }
2676 }
2677 #endif /* CONFIG_WNM */
2678
2679
2680 #ifdef CONFIG_IEEE80211R
2681 static void
2682 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2683 union wpa_event_data *data)
2684 {
2685 if (data == NULL)
2686 return;
2687
2688 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2689 data->ft_ies.ies_len,
2690 data->ft_ies.ft_action,
2691 data->ft_ies.target_ap,
2692 data->ft_ies.ric_ies,
2693 data->ft_ies.ric_ies_len) < 0) {
2694 /* TODO: prevent MLME/driver from trying to associate? */
2695 }
2696 }
2697 #endif /* CONFIG_IEEE80211R */
2698
2699
2700 #ifdef CONFIG_IBSS_RSN
2701 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2702 union wpa_event_data *data)
2703 {
2704 struct wpa_ssid *ssid;
2705 if (wpa_s->wpa_state < WPA_ASSOCIATED)
2706 return;
2707 if (data == NULL)
2708 return;
2709 ssid = wpa_s->current_ssid;
2710 if (ssid == NULL)
2711 return;
2712 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2713 return;
2714
2715 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2716 }
2717
2718
2719 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2720 union wpa_event_data *data)
2721 {
2722 struct wpa_ssid *ssid = wpa_s->current_ssid;
2723
2724 if (ssid == NULL)
2725 return;
2726
2727 /* check if the ssid is correctly configured as IBSS/RSN */
2728 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2729 return;
2730
2731 ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2732 data->rx_mgmt.frame_len);
2733 }
2734 #endif /* CONFIG_IBSS_RSN */
2735
2736
2737 #ifdef CONFIG_IEEE80211R
2738 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2739 size_t len)
2740 {
2741 const u8 *sta_addr, *target_ap_addr;
2742 u16 status;
2743
2744 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2745 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2746 return; /* only SME case supported for now */
2747 if (len < 1 + 2 * ETH_ALEN + 2)
2748 return;
2749 if (data[0] != 2)
2750 return; /* Only FT Action Response is supported for now */
2751 sta_addr = data + 1;
2752 target_ap_addr = data + 1 + ETH_ALEN;
2753 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2754 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2755 MACSTR " TargetAP " MACSTR " status %u",
2756 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2757
2758 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2759 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2760 " in FT Action Response", MAC2STR(sta_addr));
2761 return;
2762 }
2763
2764 if (status) {
2765 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2766 "failure (status code %d)", status);
2767 /* TODO: report error to FT code(?) */
2768 return;
2769 }
2770
2771 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2772 len - (1 + 2 * ETH_ALEN + 2), 1,
2773 target_ap_addr, NULL, 0) < 0)
2774 return;
2775
2776 #ifdef CONFIG_SME
2777 {
2778 struct wpa_bss *bss;
2779 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2780 if (bss)
2781 wpa_s->sme.freq = bss->freq;
2782 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2783 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2784 WLAN_AUTH_FT);
2785 }
2786 #endif /* CONFIG_SME */
2787 }
2788 #endif /* CONFIG_IEEE80211R */
2789
2790
2791 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2792 struct unprot_deauth *e)
2793 {
2794 #ifdef CONFIG_IEEE80211W
2795 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2796 "dropped: " MACSTR " -> " MACSTR
2797 " (reason code %u)",
2798 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2799 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2800 #endif /* CONFIG_IEEE80211W */
2801 }
2802
2803
2804 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2805 struct unprot_disassoc *e)
2806 {
2807 #ifdef CONFIG_IEEE80211W
2808 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2809 "dropped: " MACSTR " -> " MACSTR
2810 " (reason code %u)",
2811 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2812 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2813 #endif /* CONFIG_IEEE80211W */
2814 }
2815
2816
2817 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2818 u16 reason_code, int locally_generated,
2819 const u8 *ie, size_t ie_len, int deauth)
2820 {
2821 #ifdef CONFIG_AP
2822 if (wpa_s->ap_iface && addr) {
2823 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2824 return;
2825 }
2826
2827 if (wpa_s->ap_iface) {
2828 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2829 return;
2830 }
2831 #endif /* CONFIG_AP */
2832
2833 if (!locally_generated)
2834 wpa_s->own_disconnect_req = 0;
2835
2836 wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2837
2838 if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2839 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2840 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2841 eapol_sm_failed(wpa_s->eapol))) &&
2842 !wpa_s->eap_expected_failure))
2843 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2844
2845 #ifdef CONFIG_P2P
2846 if (deauth && reason_code > 0) {
2847 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2848 locally_generated) > 0) {
2849 /*
2850 * The interface was removed, so cannot continue
2851 * processing any additional operations after this.
2852 */
2853 return;
2854 }
2855 }
2856 #endif /* CONFIG_P2P */
2857
2858 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2859 locally_generated);
2860 }
2861
2862
2863 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2864 struct disassoc_info *info)
2865 {
2866 u16 reason_code = 0;
2867 int locally_generated = 0;
2868 const u8 *addr = NULL;
2869 const u8 *ie = NULL;
2870 size_t ie_len = 0;
2871
2872 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2873
2874 if (info) {
2875 addr = info->addr;
2876 ie = info->ie;
2877 ie_len = info->ie_len;
2878 reason_code = info->reason_code;
2879 locally_generated = info->locally_generated;
2880 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2881 locally_generated ? " (locally generated)" : "");
2882 if (addr)
2883 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2884 MAC2STR(addr));
2885 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2886 ie, ie_len);
2887 }
2888
2889 #ifdef CONFIG_AP
2890 if (wpa_s->ap_iface && info && info->addr) {
2891 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2892 return;
2893 }
2894
2895 if (wpa_s->ap_iface) {
2896 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2897 return;
2898 }
2899 #endif /* CONFIG_AP */
2900
2901 #ifdef CONFIG_P2P
2902 if (info) {
2903 wpas_p2p_disassoc_notif(
2904 wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2905 locally_generated);
2906 }
2907 #endif /* CONFIG_P2P */
2908
2909 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2910 sme_event_disassoc(wpa_s, info);
2911
2912 wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2913 ie, ie_len, 0);
2914 }
2915
2916
2917 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2918 struct deauth_info *info)
2919 {
2920 u16 reason_code = 0;
2921 int locally_generated = 0;
2922 const u8 *addr = NULL;
2923 const u8 *ie = NULL;
2924 size_t ie_len = 0;
2925
2926 wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2927
2928 if (info) {
2929 addr = info->addr;
2930 ie = info->ie;
2931 ie_len = info->ie_len;
2932 reason_code = info->reason_code;
2933 locally_generated = info->locally_generated;
2934 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2935 reason_code,
2936 locally_generated ? " (locally generated)" : "");
2937 if (addr) {
2938 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2939 MAC2STR(addr));
2940 }
2941 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2942 ie, ie_len);
2943 }
2944
2945 wpa_reset_ft_completed(wpa_s->wpa);
2946
2947 wpas_event_disconnect(wpa_s, addr, reason_code,
2948 locally_generated, ie, ie_len, 1);
2949 }
2950
2951
2952 static const char * reg_init_str(enum reg_change_initiator init)
2953 {
2954 switch (init) {
2955 case REGDOM_SET_BY_CORE:
2956 return "CORE";
2957 case REGDOM_SET_BY_USER:
2958 return "USER";
2959 case REGDOM_SET_BY_DRIVER:
2960 return "DRIVER";
2961 case REGDOM_SET_BY_COUNTRY_IE:
2962 return "COUNTRY_IE";
2963 case REGDOM_BEACON_HINT:
2964 return "BEACON_HINT";
2965 }
2966 return "?";
2967 }
2968
2969
2970 static const char * reg_type_str(enum reg_type type)
2971 {
2972 switch (type) {
2973 case REGDOM_TYPE_UNKNOWN:
2974 return "UNKNOWN";
2975 case REGDOM_TYPE_COUNTRY:
2976 return "COUNTRY";
2977 case REGDOM_TYPE_WORLD:
2978 return "WORLD";
2979 case REGDOM_TYPE_CUSTOM_WORLD:
2980 return "CUSTOM_WORLD";
2981 case REGDOM_TYPE_INTERSECTION:
2982 return "INTERSECTION";
2983 }
2984 return "?";
2985 }
2986
2987
2988 static void wpa_supplicant_update_channel_list(
2989 struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2990 {
2991 struct wpa_supplicant *ifs;
2992
2993 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2994 reg_init_str(info->initiator), reg_type_str(info->type),
2995 info->alpha2[0] ? " alpha2=" : "",
2996 info->alpha2[0] ? info->alpha2 : "");
2997
2998 if (wpa_s->drv_priv == NULL)
2999 return; /* Ignore event during drv initialization */
3000
3001 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
3002 radio_list) {
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 /* Restart sched_scan with updated channel list */
3011 if (wpa_s->sched_scanning) {
3012 wpa_dbg(wpa_s, MSG_DEBUG,
3013 "Channel list changed restart sched scan.");
3014 wpa_supplicant_cancel_sched_scan(wpa_s);
3015 wpa_supplicant_req_scan(wpa_s, 0, 0);
3016 }
3017
3018 wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_DRIVER);
3019 }
3020
3021
3022 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
3023 const u8 *frame, size_t len, int freq,
3024 int rssi)
3025 {
3026 const struct ieee80211_mgmt *mgmt;
3027 const u8 *payload;
3028 size_t plen;
3029 u8 category;
3030
3031 if (len < IEEE80211_HDRLEN + 2)
3032 return;
3033
3034 mgmt = (const struct ieee80211_mgmt *) frame;
3035 payload = frame + IEEE80211_HDRLEN;
3036 category = *payload++;
3037 plen = len - IEEE80211_HDRLEN - 1;
3038
3039 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
3040 " Category=%u DataLen=%d freq=%d MHz",
3041 MAC2STR(mgmt->sa), category, (int) plen, freq);
3042
3043 if (category == WLAN_ACTION_WMM) {
3044 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
3045 return;
3046 }
3047
3048 #ifdef CONFIG_IEEE80211R
3049 if (category == WLAN_ACTION_FT) {
3050 ft_rx_action(wpa_s, payload, plen);
3051 return;
3052 }
3053 #endif /* CONFIG_IEEE80211R */
3054
3055 #ifdef CONFIG_IEEE80211W
3056 #ifdef CONFIG_SME
3057 if (category == WLAN_ACTION_SA_QUERY) {
3058 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
3059 return;
3060 }
3061 #endif /* CONFIG_SME */
3062 #endif /* CONFIG_IEEE80211W */
3063
3064 #ifdef CONFIG_WNM
3065 if (mgmt->u.action.category == WLAN_ACTION_WNM) {
3066 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
3067 return;
3068 }
3069 #endif /* CONFIG_WNM */
3070
3071 #ifdef CONFIG_GAS
3072 if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
3073 mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
3074 gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
3075 mgmt->u.action.category,
3076 payload, plen, freq) == 0)
3077 return;
3078 #endif /* CONFIG_GAS */
3079
3080 #ifdef CONFIG_TDLS
3081 if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
3082 payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
3083 wpa_dbg(wpa_s, MSG_DEBUG,
3084 "TDLS: Received Discovery Response from " MACSTR,
3085 MAC2STR(mgmt->sa));
3086 return;
3087 }
3088 #endif /* CONFIG_TDLS */
3089
3090 #ifdef CONFIG_INTERWORKING
3091 if (category == WLAN_ACTION_QOS && plen >= 1 &&
3092 payload[0] == QOS_QOS_MAP_CONFIG) {
3093 const u8 *pos = payload + 1;
3094 size_t qlen = plen - 1;
3095 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
3096 MACSTR, MAC2STR(mgmt->sa));
3097 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
3098 qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
3099 pos[1] <= qlen - 2 && pos[1] >= 16)
3100 wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
3101 return;
3102 }
3103 #endif /* CONFIG_INTERWORKING */
3104
3105 if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3106 payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
3107 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
3108 return;
3109 }
3110
3111 if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3112 payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
3113 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
3114 payload + 1, plen - 1,
3115 rssi);
3116 return;
3117 }
3118
3119 #ifdef CONFIG_FST
3120 if (mgmt->u.action.category == WLAN_ACTION_FST && wpa_s->fst) {
3121 fst_rx_action(wpa_s->fst, mgmt, len);
3122 return;
3123 }
3124 #endif /* CONFIG_FST */
3125
3126 wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
3127 category, payload, plen, freq);
3128 if (wpa_s->ifmsh)
3129 mesh_mpm_action_rx(wpa_s, mgmt, len);
3130 }
3131
3132
3133 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
3134 union wpa_event_data *event)
3135 {
3136 struct wpa_freq_range_list *list;
3137 char *str = NULL;
3138
3139 list = &event->freq_range;
3140
3141 if (list->num)
3142 str = freq_range_list_str(list);
3143 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
3144 str ? str : "");
3145
3146 #ifdef CONFIG_P2P
3147 if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
3148 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
3149 __func__);
3150 } else {
3151 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
3152
3153 /*
3154 * The update channel flow will also take care of moving a GO
3155 * from the unsafe frequency if needed.
3156 */
3157 wpas_p2p_update_channel_list(wpa_s,
3158 WPAS_P2P_CHANNEL_UPDATE_AVOID);
3159 }
3160 #endif /* CONFIG_P2P */
3161
3162 os_free(str);
3163 }
3164
3165
3166 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3167 union wpa_event_data *data)
3168 {
3169 wpa_dbg(wpa_s, MSG_DEBUG,
3170 "Connection authorized by device, previous state %d",
3171 wpa_s->wpa_state);
3172 if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3173 wpa_supplicant_cancel_auth_timeout(wpa_s);
3174 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3175 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3176 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3177 }
3178 wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3179 wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3180 data->assoc_info.ptk_kck_len,
3181 data->assoc_info.ptk_kek,
3182 data->assoc_info.ptk_kek_len);
3183 }
3184
3185
3186 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3187 union wpa_event_data *data)
3188 {
3189 struct wpa_supplicant *wpa_s = ctx;
3190 int resched;
3191
3192 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3193 event != EVENT_INTERFACE_ENABLED &&
3194 event != EVENT_INTERFACE_STATUS &&
3195 event != EVENT_SCHED_SCAN_STOPPED) {
3196 wpa_dbg(wpa_s, MSG_DEBUG,
3197 "Ignore event %s (%d) while interface is disabled",
3198 event_to_string(event), event);
3199 return;
3200 }
3201
3202 #ifndef CONFIG_NO_STDOUT_DEBUG
3203 {
3204 int level = MSG_DEBUG;
3205
3206 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3207 const struct ieee80211_hdr *hdr;
3208 u16 fc;
3209 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3210 fc = le_to_host16(hdr->frame_control);
3211 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3212 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3213 level = MSG_EXCESSIVE;
3214 }
3215
3216 wpa_dbg(wpa_s, level, "Event %s (%d) received",
3217 event_to_string(event), event);
3218 }
3219 #endif /* CONFIG_NO_STDOUT_DEBUG */
3220
3221 switch (event) {
3222 case EVENT_AUTH:
3223 sme_event_auth(wpa_s, data);
3224 break;
3225 case EVENT_ASSOC:
3226 wpa_supplicant_event_assoc(wpa_s, data);
3227 if (data && data->assoc_info.authorized)
3228 wpa_supplicant_event_assoc_auth(wpa_s, data);
3229 break;
3230 case EVENT_DISASSOC:
3231 wpas_event_disassoc(wpa_s,
3232 data ? &data->disassoc_info : NULL);
3233 break;
3234 case EVENT_DEAUTH:
3235 wpas_event_deauth(wpa_s,
3236 data ? &data->deauth_info : NULL);
3237 break;
3238 case EVENT_MICHAEL_MIC_FAILURE:
3239 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3240 break;
3241 #ifndef CONFIG_NO_SCAN_PROCESSING
3242 case EVENT_SCAN_STARTED:
3243 os_get_reltime(&wpa_s->scan_start_time);
3244 if (wpa_s->own_scan_requested) {
3245 struct os_reltime diff;
3246
3247 os_reltime_sub(&wpa_s->scan_start_time,
3248 &wpa_s->scan_trigger_time, &diff);
3249 wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3250 diff.sec, diff.usec);
3251 wpa_s->own_scan_requested = 0;
3252 wpa_s->own_scan_running = 1;
3253 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3254 wpa_s->manual_scan_use_id) {
3255 wpa_msg_ctrl(wpa_s, MSG_INFO,
3256 WPA_EVENT_SCAN_STARTED "id=%u",
3257 wpa_s->manual_scan_id);
3258 } else {
3259 wpa_msg_ctrl(wpa_s, MSG_INFO,
3260 WPA_EVENT_SCAN_STARTED);
3261 }
3262 } else {
3263 wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3264 wpa_s->radio->external_scan_running = 1;
3265 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3266 }
3267 break;
3268 case EVENT_SCAN_RESULTS:
3269 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3270 struct os_reltime now, diff;
3271 os_get_reltime(&now);
3272 os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3273 wpa_s->scan_start_time.sec = 0;
3274 wpa_s->scan_start_time.usec = 0;
3275 wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3276 diff.sec, diff.usec);
3277 }
3278 if (wpa_supplicant_event_scan_results(wpa_s, data))
3279 break; /* interface may have been removed */
3280 wpa_s->own_scan_running = 0;
3281 wpa_s->radio->external_scan_running = 0;
3282 radio_work_check_next(wpa_s);
3283 break;
3284 #endif /* CONFIG_NO_SCAN_PROCESSING */
3285 case EVENT_ASSOCINFO:
3286 wpa_supplicant_event_associnfo(wpa_s, data);
3287 break;
3288 case EVENT_INTERFACE_STATUS:
3289 wpa_supplicant_event_interface_status(wpa_s, data);
3290 break;
3291 case EVENT_PMKID_CANDIDATE:
3292 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3293 break;
3294 #ifdef CONFIG_PEERKEY
3295 case EVENT_STKSTART:
3296 wpa_supplicant_event_stkstart(wpa_s, data);
3297 break;
3298 #endif /* CONFIG_PEERKEY */
3299 #ifdef CONFIG_TDLS
3300 case EVENT_TDLS:
3301 wpa_supplicant_event_tdls(wpa_s, data);
3302 break;
3303 #endif /* CONFIG_TDLS */
3304 #ifdef CONFIG_WNM
3305 case EVENT_WNM:
3306 wpa_supplicant_event_wnm(wpa_s, data);
3307 break;
3308 #endif /* CONFIG_WNM */
3309 #ifdef CONFIG_IEEE80211R
3310 case EVENT_FT_RESPONSE:
3311 wpa_supplicant_event_ft_response(wpa_s, data);
3312 break;
3313 #endif /* CONFIG_IEEE80211R */
3314 #ifdef CONFIG_IBSS_RSN
3315 case EVENT_IBSS_RSN_START:
3316 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3317 break;
3318 #endif /* CONFIG_IBSS_RSN */
3319 case EVENT_ASSOC_REJECT:
3320 if (data->assoc_reject.bssid)
3321 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3322 "bssid=" MACSTR " status_code=%u",
3323 MAC2STR(data->assoc_reject.bssid),
3324 data->assoc_reject.status_code);
3325 else
3326 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3327 "status_code=%u",
3328 data->assoc_reject.status_code);
3329 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3330 sme_event_assoc_reject(wpa_s, data);
3331 else {
3332 const u8 *bssid = data->assoc_reject.bssid;
3333 if (bssid == NULL || is_zero_ether_addr(bssid))
3334 bssid = wpa_s->pending_bssid;
3335 wpas_connection_failed(wpa_s, bssid);
3336 wpa_supplicant_mark_disassoc(wpa_s);
3337 }
3338 break;
3339 case EVENT_AUTH_TIMED_OUT:
3340 /* It is possible to get this event from earlier connection */
3341 if (wpa_s->current_ssid &&
3342 wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3343 wpa_dbg(wpa_s, MSG_DEBUG,
3344 "Ignore AUTH_TIMED_OUT in mesh configuration");
3345 break;
3346 }
3347 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3348 sme_event_auth_timed_out(wpa_s, data);
3349 break;
3350 case EVENT_ASSOC_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 ASSOC_TIMED_OUT in mesh configuration");
3356 break;
3357 }
3358 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3359 sme_event_assoc_timed_out(wpa_s, data);
3360 break;
3361 case EVENT_TX_STATUS:
3362 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3363 " type=%d stype=%d",
3364 MAC2STR(data->tx_status.dst),
3365 data->tx_status.type, data->tx_status.stype);
3366 #ifdef CONFIG_AP
3367 if (wpa_s->ap_iface == NULL) {
3368 #ifdef CONFIG_OFFCHANNEL
3369 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3370 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3371 offchannel_send_action_tx_status(
3372 wpa_s, data->tx_status.dst,
3373 data->tx_status.data,
3374 data->tx_status.data_len,
3375 data->tx_status.ack ?
3376 OFFCHANNEL_SEND_ACTION_SUCCESS :
3377 OFFCHANNEL_SEND_ACTION_NO_ACK);
3378 #endif /* CONFIG_OFFCHANNEL */
3379 break;
3380 }
3381 #endif /* CONFIG_AP */
3382 #ifdef CONFIG_OFFCHANNEL
3383 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3384 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3385 /*
3386 * Catch TX status events for Action frames we sent via group
3387 * interface in GO mode.
3388 */
3389 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3390 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3391 os_memcmp(wpa_s->parent->pending_action_dst,
3392 data->tx_status.dst, ETH_ALEN) == 0) {
3393 offchannel_send_action_tx_status(
3394 wpa_s->parent, data->tx_status.dst,
3395 data->tx_status.data,
3396 data->tx_status.data_len,
3397 data->tx_status.ack ?
3398 OFFCHANNEL_SEND_ACTION_SUCCESS :
3399 OFFCHANNEL_SEND_ACTION_NO_ACK);
3400 break;
3401 }
3402 #endif /* CONFIG_OFFCHANNEL */
3403 #ifdef CONFIG_AP
3404 switch (data->tx_status.type) {
3405 case WLAN_FC_TYPE_MGMT:
3406 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3407 data->tx_status.data_len,
3408 data->tx_status.stype,
3409 data->tx_status.ack);
3410 break;
3411 case WLAN_FC_TYPE_DATA:
3412 ap_tx_status(wpa_s, data->tx_status.dst,
3413 data->tx_status.data,
3414 data->tx_status.data_len,
3415 data->tx_status.ack);
3416 break;
3417 }
3418 #endif /* CONFIG_AP */
3419 break;
3420 #ifdef CONFIG_AP
3421 case EVENT_EAPOL_TX_STATUS:
3422 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3423 data->eapol_tx_status.data,
3424 data->eapol_tx_status.data_len,
3425 data->eapol_tx_status.ack);
3426 break;
3427 case EVENT_DRIVER_CLIENT_POLL_OK:
3428 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3429 break;
3430 case EVENT_RX_FROM_UNKNOWN:
3431 if (wpa_s->ap_iface == NULL)
3432 break;
3433 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3434 data->rx_from_unknown.wds);
3435 break;
3436 case EVENT_CH_SWITCH:
3437 if (!data)
3438 break;
3439 if (!wpa_s->ap_iface) {
3440 wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3441 "event in non-AP mode");
3442 break;
3443 }
3444
3445 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3446 data->ch_switch.ht_enabled,
3447 data->ch_switch.ch_offset,
3448 data->ch_switch.ch_width,
3449 data->ch_switch.cf1,
3450 data->ch_switch.cf2);
3451 break;
3452 #ifdef NEED_AP_MLME
3453 case EVENT_DFS_RADAR_DETECTED:
3454 if (data)
3455 wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
3456 break;
3457 case EVENT_DFS_CAC_STARTED:
3458 if (data)
3459 wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
3460 break;
3461 case EVENT_DFS_CAC_FINISHED:
3462 if (data)
3463 wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
3464 break;
3465 case EVENT_DFS_CAC_ABORTED:
3466 if (data)
3467 wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
3468 break;
3469 case EVENT_DFS_NOP_FINISHED:
3470 if (data)
3471 wpas_event_dfs_cac_nop_finished(wpa_s,
3472 &data->dfs_event);
3473 break;
3474 #endif /* NEED_AP_MLME */
3475 #endif /* CONFIG_AP */
3476 case EVENT_RX_MGMT: {
3477 u16 fc, stype;
3478 const struct ieee80211_mgmt *mgmt;
3479
3480 #ifdef CONFIG_TESTING_OPTIONS
3481 if (wpa_s->ext_mgmt_frame_handling) {
3482 struct rx_mgmt *rx = &data->rx_mgmt;
3483 size_t hex_len = 2 * rx->frame_len + 1;
3484 char *hex = os_malloc(hex_len);
3485 if (hex) {
3486 wpa_snprintf_hex(hex, hex_len,
3487 rx->frame, rx->frame_len);
3488 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3489 rx->freq, rx->datarate, rx->ssi_signal,
3490 hex);
3491 os_free(hex);
3492 }
3493 break;
3494 }
3495 #endif /* CONFIG_TESTING_OPTIONS */
3496
3497 mgmt = (const struct ieee80211_mgmt *)
3498 data->rx_mgmt.frame;
3499 fc = le_to_host16(mgmt->frame_control);
3500 stype = WLAN_FC_GET_STYPE(fc);
3501
3502 #ifdef CONFIG_AP
3503 if (wpa_s->ap_iface == NULL) {
3504 #endif /* CONFIG_AP */
3505 #ifdef CONFIG_P2P
3506 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3507 data->rx_mgmt.frame_len > 24) {
3508 const u8 *src = mgmt->sa;
3509 const u8 *ie = mgmt->u.probe_req.variable;
3510 size_t ie_len = data->rx_mgmt.frame_len -
3511 (mgmt->u.probe_req.variable -
3512 data->rx_mgmt.frame);
3513 wpas_p2p_probe_req_rx(
3514 wpa_s, src, mgmt->da,
3515 mgmt->bssid, ie, ie_len,
3516 data->rx_mgmt.freq,
3517 data->rx_mgmt.ssi_signal);
3518 break;
3519 }
3520 #endif /* CONFIG_P2P */
3521 #ifdef CONFIG_IBSS_RSN
3522 if (wpa_s->current_ssid &&
3523 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3524 stype == WLAN_FC_STYPE_AUTH &&
3525 data->rx_mgmt.frame_len >= 30) {
3526 wpa_supplicant_event_ibss_auth(wpa_s, data);
3527 break;
3528 }
3529 #endif /* CONFIG_IBSS_RSN */
3530
3531 if (stype == WLAN_FC_STYPE_ACTION) {
3532 wpas_event_rx_mgmt_action(
3533 wpa_s, data->rx_mgmt.frame,
3534 data->rx_mgmt.frame_len,
3535 data->rx_mgmt.freq,
3536 data->rx_mgmt.ssi_signal);
3537 break;
3538 }
3539
3540 if (wpa_s->ifmsh) {
3541 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3542 break;
3543 }
3544
3545 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3546 "management frame in non-AP mode");
3547 break;
3548 #ifdef CONFIG_AP
3549 }
3550
3551 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3552 data->rx_mgmt.frame_len > 24) {
3553 const u8 *ie = mgmt->u.probe_req.variable;
3554 size_t ie_len = data->rx_mgmt.frame_len -
3555 (mgmt->u.probe_req.variable -
3556 data->rx_mgmt.frame);
3557
3558 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3559 mgmt->bssid, ie, ie_len,
3560 data->rx_mgmt.ssi_signal);
3561 }
3562
3563 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3564 #endif /* CONFIG_AP */
3565 break;
3566 }
3567 case EVENT_RX_PROBE_REQ:
3568 if (data->rx_probe_req.sa == NULL ||
3569 data->rx_probe_req.ie == NULL)
3570 break;
3571 #ifdef CONFIG_AP
3572 if (wpa_s->ap_iface) {
3573 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3574 data->rx_probe_req.sa,
3575 data->rx_probe_req.da,
3576 data->rx_probe_req.bssid,
3577 data->rx_probe_req.ie,
3578 data->rx_probe_req.ie_len,
3579 data->rx_probe_req.ssi_signal);
3580 break;
3581 }
3582 #endif /* CONFIG_AP */
3583 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3584 data->rx_probe_req.da,
3585 data->rx_probe_req.bssid,
3586 data->rx_probe_req.ie,
3587 data->rx_probe_req.ie_len,
3588 0,
3589 data->rx_probe_req.ssi_signal);
3590 break;
3591 case EVENT_REMAIN_ON_CHANNEL:
3592 #ifdef CONFIG_OFFCHANNEL
3593 offchannel_remain_on_channel_cb(
3594 wpa_s, data->remain_on_channel.freq,
3595 data->remain_on_channel.duration);
3596 #endif /* CONFIG_OFFCHANNEL */
3597 wpas_p2p_remain_on_channel_cb(
3598 wpa_s, data->remain_on_channel.freq,
3599 data->remain_on_channel.duration);
3600 break;
3601 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3602 #ifdef CONFIG_OFFCHANNEL
3603 offchannel_cancel_remain_on_channel_cb(
3604 wpa_s, data->remain_on_channel.freq);
3605 #endif /* CONFIG_OFFCHANNEL */
3606 wpas_p2p_cancel_remain_on_channel_cb(
3607 wpa_s, data->remain_on_channel.freq);
3608 break;
3609 case EVENT_EAPOL_RX:
3610 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3611 data->eapol_rx.data,
3612 data->eapol_rx.data_len);
3613 break;
3614 case EVENT_SIGNAL_CHANGE:
3615 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3616 "above=%d signal=%d noise=%d txrate=%d",
3617 data->signal_change.above_threshold,
3618 data->signal_change.current_signal,
3619 data->signal_change.current_noise,
3620 data->signal_change.current_txrate);
3621 wpa_bss_update_level(wpa_s->current_bss,
3622 data->signal_change.current_signal);
3623 bgscan_notify_signal_change(
3624 wpa_s, data->signal_change.above_threshold,
3625 data->signal_change.current_signal,
3626 data->signal_change.current_noise,
3627 data->signal_change.current_txrate);
3628 break;
3629 case EVENT_INTERFACE_ENABLED:
3630 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3631 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3632 wpa_supplicant_update_mac_addr(wpa_s);
3633 if (wpa_s->p2p_mgmt) {
3634 wpa_supplicant_set_state(wpa_s,
3635 WPA_DISCONNECTED);
3636 break;
3637 }
3638
3639 #ifdef CONFIG_AP
3640 if (!wpa_s->ap_iface) {
3641 wpa_supplicant_set_state(wpa_s,
3642 WPA_DISCONNECTED);
3643 wpa_s->scan_req = NORMAL_SCAN_REQ;
3644 wpa_supplicant_req_scan(wpa_s, 0, 0);
3645 } else
3646 wpa_supplicant_set_state(wpa_s,
3647 WPA_COMPLETED);
3648 #else /* CONFIG_AP */
3649 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3650 wpa_supplicant_req_scan(wpa_s, 0, 0);
3651 #endif /* CONFIG_AP */
3652 }
3653 break;
3654 case EVENT_INTERFACE_DISABLED:
3655 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3656 #ifdef CONFIG_P2P
3657 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3658 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3659 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3660 /*
3661 * Mark interface disabled if this happens to end up not
3662 * being removed as a separate P2P group interface.
3663 */
3664 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3665 /*
3666 * The interface was externally disabled. Remove
3667 * it assuming an external entity will start a
3668 * new session if needed.
3669 */
3670 if (wpa_s->current_ssid &&
3671 wpa_s->current_ssid->p2p_group)
3672 wpas_p2p_interface_unavailable(wpa_s);
3673 else
3674 wpas_p2p_disconnect(wpa_s);
3675 /*
3676 * wpa_s instance may have been freed, so must not use
3677 * it here anymore.
3678 */
3679 break;
3680 }
3681 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3682 p2p_in_progress(wpa_s->global->p2p) > 1) {
3683 /* This radio work will be cancelled, so clear P2P
3684 * state as well.
3685 */
3686 p2p_stop_find(wpa_s->global->p2p);
3687 }
3688 #endif /* CONFIG_P2P */
3689
3690 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3691 /*
3692 * Indicate disconnection to keep ctrl_iface events
3693 * consistent.
3694 */
3695 wpa_supplicant_event_disassoc(
3696 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3697 }
3698 wpa_supplicant_mark_disassoc(wpa_s);
3699 radio_remove_works(wpa_s, NULL, 0);
3700
3701 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3702 break;
3703 case EVENT_CHANNEL_LIST_CHANGED:
3704 wpa_supplicant_update_channel_list(
3705 wpa_s, &data->channel_list_changed);
3706 break;
3707 case EVENT_INTERFACE_UNAVAILABLE:
3708 wpas_p2p_interface_unavailable(wpa_s);
3709 break;
3710 case EVENT_BEST_CHANNEL:
3711 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3712 "(%d %d %d)",
3713 data->best_chan.freq_24, data->best_chan.freq_5,
3714 data->best_chan.freq_overall);
3715 wpa_s->best_24_freq = data->best_chan.freq_24;
3716 wpa_s->best_5_freq = data->best_chan.freq_5;
3717 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3718 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3719 data->best_chan.freq_5,
3720 data->best_chan.freq_overall);
3721 break;
3722 case EVENT_UNPROT_DEAUTH:
3723 wpa_supplicant_event_unprot_deauth(wpa_s,
3724 &data->unprot_deauth);
3725 break;
3726 case EVENT_UNPROT_DISASSOC:
3727 wpa_supplicant_event_unprot_disassoc(wpa_s,
3728 &data->unprot_disassoc);
3729 break;
3730 case EVENT_STATION_LOW_ACK:
3731 #ifdef CONFIG_AP
3732 if (wpa_s->ap_iface && data)
3733 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3734 data->low_ack.addr);
3735 #endif /* CONFIG_AP */
3736 #ifdef CONFIG_TDLS
3737 if (data)
3738 wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3739 data->low_ack.addr);
3740 #endif /* CONFIG_TDLS */
3741 break;
3742 case EVENT_IBSS_PEER_LOST:
3743 #ifdef CONFIG_IBSS_RSN
3744 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3745 #endif /* CONFIG_IBSS_RSN */
3746 break;
3747 case EVENT_DRIVER_GTK_REKEY:
3748 if (os_memcmp(data->driver_gtk_rekey.bssid,
3749 wpa_s->bssid, ETH_ALEN))
3750 break;
3751 if (!wpa_s->wpa)
3752 break;
3753 wpa_sm_update_replay_ctr(wpa_s->wpa,
3754 data->driver_gtk_rekey.replay_ctr);
3755 break;
3756 case EVENT_SCHED_SCAN_STOPPED:
3757 wpa_s->pno = 0;
3758 wpa_s->sched_scanning = 0;
3759 resched = wpa_s->scanning;
3760 wpa_supplicant_notify_scanning(wpa_s, 0);
3761
3762 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3763 break;
3764
3765 /*
3766 * Start a new sched scan to continue searching for more SSIDs
3767 * either if timed out or PNO schedule scan is pending.
3768 */
3769 if (wpa_s->sched_scan_timed_out) {
3770 wpa_supplicant_req_sched_scan(wpa_s);
3771 } else if (wpa_s->pno_sched_pending) {
3772 wpa_s->pno_sched_pending = 0;
3773 wpas_start_pno(wpa_s);
3774 } else if (resched) {
3775 wpa_supplicant_req_scan(wpa_s, 0, 0);
3776 }
3777
3778 break;
3779 case EVENT_WPS_BUTTON_PUSHED:
3780 #ifdef CONFIG_WPS
3781 wpas_wps_start_pbc(wpa_s, NULL, 0);
3782 #endif /* CONFIG_WPS */
3783 break;
3784 case EVENT_AVOID_FREQUENCIES:
3785 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3786 break;
3787 case EVENT_CONNECT_FAILED_REASON:
3788 #ifdef CONFIG_AP
3789 if (!wpa_s->ap_iface || !data)
3790 break;
3791 hostapd_event_connect_failed_reason(
3792 wpa_s->ap_iface->bss[0],
3793 data->connect_failed_reason.addr,
3794 data->connect_failed_reason.code);
3795 #endif /* CONFIG_AP */
3796 break;
3797 case EVENT_NEW_PEER_CANDIDATE:
3798 #ifdef CONFIG_MESH
3799 if (!wpa_s->ifmsh || !data)
3800 break;
3801 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
3802 data->mesh_peer.ies,
3803 data->mesh_peer.ie_len);
3804 #endif /* CONFIG_MESH */
3805 break;
3806 default:
3807 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3808 break;
3809 }
3810 }
Unnamed repository; edit this file 'description' to name the repository.