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
wpas_temp_disabled(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)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 #ifndef CONFIG_NO_SCAN_PROCESSING
76 /**
77 * wpas_reenabled_network_time - Time until first network is re-enabled
78 * @wpa_s: Pointer to wpa_supplicant data
79 * Returns: If all enabled networks are temporarily disabled, returns the time
80 * (in sec) until the first network is re-enabled. Otherwise returns 0.
81 *
82 * This function is used in case all enabled networks are temporarily disabled,
83 * in which case it returns the time (in sec) that the first network will be
84 * re-enabled. The function assumes that at least one network is enabled.
85 */
wpas_reenabled_network_time(struct wpa_supplicant * wpa_s)86 static int wpas_reenabled_network_time(struct wpa_supplicant *wpa_s)
87 {
88 struct wpa_ssid *ssid;
89 int disabled_for, res = 0;
90
91 #ifdef CONFIG_INTERWORKING
92 if (wpa_s->conf->auto_interworking && wpa_s->conf->interworking &&
93 wpa_s->conf->cred)
94 return 0;
95 #endif /* CONFIG_INTERWORKING */
96
97 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
98 if (ssid->disabled)
99 continue;
100
101 disabled_for = wpas_temp_disabled(wpa_s, ssid);
102 if (!disabled_for)
103 return 0;
104
105 if (!res || disabled_for < res)
106 res = disabled_for;
107 }
108
109 return res;
110 }
111 #endif /* CONFIG_NO_SCAN_PROCESSING */
112
113
wpas_network_reenabled(void * eloop_ctx,void * timeout_ctx)114 void wpas_network_reenabled(void *eloop_ctx, void *timeout_ctx)
115 {
116 struct wpa_supplicant *wpa_s = eloop_ctx;
117
118 if (wpa_s->disconnected || wpa_s->wpa_state != WPA_SCANNING)
119 return;
120
121 wpa_dbg(wpa_s, MSG_DEBUG,
122 "Try to associate due to network getting re-enabled");
123 if (wpa_supplicant_fast_associate(wpa_s) != 1) {
124 wpa_supplicant_cancel_sched_scan(wpa_s);
125 wpa_supplicant_req_scan(wpa_s, 0, 0);
126 }
127 }
128
129
wpa_supplicant_get_new_bss(struct wpa_supplicant * wpa_s,const u8 * bssid)130 static struct wpa_bss * wpa_supplicant_get_new_bss(
131 struct wpa_supplicant *wpa_s, const u8 *bssid)
132 {
133 struct wpa_bss *bss = NULL;
134 struct wpa_ssid *ssid = wpa_s->current_ssid;
135
136 if (ssid->ssid_len > 0)
137 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
138 if (!bss)
139 bss = wpa_bss_get_bssid(wpa_s, bssid);
140
141 return bss;
142 }
143
144
wpa_supplicant_update_current_bss(struct wpa_supplicant * wpa_s)145 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
146 {
147 struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
148
149 if (!bss) {
150 wpa_supplicant_update_scan_results(wpa_s);
151
152 /* Get the BSS from the new scan results */
153 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
154 }
155
156 if (bss)
157 wpa_s->current_bss = bss;
158 }
159
160
wpa_supplicant_select_config(struct wpa_supplicant * wpa_s)161 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
162 {
163 struct wpa_ssid *ssid, *old_ssid;
164 u8 drv_ssid[SSID_MAX_LEN];
165 size_t drv_ssid_len;
166 int res;
167
168 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
169 wpa_supplicant_update_current_bss(wpa_s);
170
171 if (wpa_s->current_ssid->ssid_len == 0)
172 return 0; /* current profile still in use */
173 res = wpa_drv_get_ssid(wpa_s, drv_ssid);
174 if (res < 0) {
175 wpa_msg(wpa_s, MSG_INFO,
176 "Failed to read SSID from driver");
177 return 0; /* try to use current profile */
178 }
179 drv_ssid_len = res;
180
181 if (drv_ssid_len == wpa_s->current_ssid->ssid_len &&
182 os_memcmp(drv_ssid, wpa_s->current_ssid->ssid,
183 drv_ssid_len) == 0)
184 return 0; /* current profile still in use */
185
186 wpa_msg(wpa_s, MSG_DEBUG,
187 "Driver-initiated BSS selection changed the SSID to %s",
188 wpa_ssid_txt(drv_ssid, drv_ssid_len));
189 /* continue selecting a new network profile */
190 }
191
192 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
193 "information");
194 ssid = wpa_supplicant_get_ssid(wpa_s);
195 if (ssid == NULL) {
196 wpa_msg(wpa_s, MSG_INFO,
197 "No network configuration found for the current AP");
198 return -1;
199 }
200
201 if (wpas_network_disabled(wpa_s, ssid)) {
202 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
203 return -1;
204 }
205
206 if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
207 disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
208 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
209 return -1;
210 }
211
212 res = wpas_temp_disabled(wpa_s, ssid);
213 if (res > 0) {
214 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
215 "disabled for %d second(s)", res);
216 return -1;
217 }
218
219 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
220 "current AP");
221 if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
222 u8 wpa_ie[80];
223 size_t wpa_ie_len = sizeof(wpa_ie);
224 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
225 wpa_ie, &wpa_ie_len) < 0)
226 wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
227 } else {
228 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
229 }
230
231 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
232 eapol_sm_invalidate_cached_session(wpa_s->eapol);
233 old_ssid = wpa_s->current_ssid;
234 wpa_s->current_ssid = ssid;
235
236 wpa_supplicant_update_current_bss(wpa_s);
237
238 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
239 wpa_supplicant_initiate_eapol(wpa_s);
240 if (old_ssid != wpa_s->current_ssid)
241 wpas_notify_network_changed(wpa_s);
242
243 return 0;
244 }
245
246
wpa_supplicant_stop_countermeasures(void * eloop_ctx,void * sock_ctx)247 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
248 {
249 struct wpa_supplicant *wpa_s = eloop_ctx;
250
251 if (wpa_s->countermeasures) {
252 wpa_s->countermeasures = 0;
253 wpa_drv_set_countermeasures(wpa_s, 0);
254 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
255
256 /*
257 * It is possible that the device is sched scanning, which means
258 * that a connection attempt will be done only when we receive
259 * scan results. However, in this case, it would be preferable
260 * to scan and connect immediately, so cancel the sched_scan and
261 * issue a regular scan flow.
262 */
263 wpa_supplicant_cancel_sched_scan(wpa_s);
264 wpa_supplicant_req_scan(wpa_s, 0, 0);
265 }
266 }
267
268
wpa_supplicant_mark_disassoc(struct wpa_supplicant * wpa_s)269 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
270 {
271 int bssid_changed;
272
273 wnm_bss_keep_alive_deinit(wpa_s);
274
275 #ifdef CONFIG_IBSS_RSN
276 ibss_rsn_deinit(wpa_s->ibss_rsn);
277 wpa_s->ibss_rsn = NULL;
278 #endif /* CONFIG_IBSS_RSN */
279
280 #ifdef CONFIG_AP
281 wpa_supplicant_ap_deinit(wpa_s);
282 #endif /* CONFIG_AP */
283
284 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
285 return;
286
287 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
288 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
289 os_memset(wpa_s->bssid, 0, ETH_ALEN);
290 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
291 sme_clear_on_disassoc(wpa_s);
292 wpa_s->current_bss = NULL;
293 wpa_s->assoc_freq = 0;
294
295 if (bssid_changed)
296 wpas_notify_bssid_changed(wpa_s);
297
298 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
299 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
300 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
301 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
302 wpa_s->ap_ies_from_associnfo = 0;
303 wpa_s->current_ssid = NULL;
304 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
305 wpa_s->key_mgmt = 0;
306
307 wpas_rrm_reset(wpa_s);
308 wpa_s->wnmsleep_used = 0;
309 }
310
311
wpa_find_assoc_pmkid(struct wpa_supplicant * wpa_s)312 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
313 {
314 struct wpa_ie_data ie;
315 int pmksa_set = -1;
316 size_t i;
317
318 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
319 ie.pmkid == NULL)
320 return;
321
322 for (i = 0; i < ie.num_pmkid; i++) {
323 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
324 ie.pmkid + i * PMKID_LEN,
325 NULL, NULL, 0);
326 if (pmksa_set == 0) {
327 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
328 break;
329 }
330 }
331
332 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
333 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
334 }
335
336
wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant * wpa_s,union wpa_event_data * data)337 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
338 union wpa_event_data *data)
339 {
340 if (data == NULL) {
341 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
342 "event");
343 return;
344 }
345 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
346 " index=%d preauth=%d",
347 MAC2STR(data->pmkid_candidate.bssid),
348 data->pmkid_candidate.index,
349 data->pmkid_candidate.preauth);
350
351 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
352 data->pmkid_candidate.index,
353 data->pmkid_candidate.preauth);
354 }
355
356
wpa_supplicant_dynamic_keys(struct wpa_supplicant * wpa_s)357 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
358 {
359 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
360 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
361 return 0;
362
363 #ifdef IEEE8021X_EAPOL
364 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
365 wpa_s->current_ssid &&
366 !(wpa_s->current_ssid->eapol_flags &
367 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
368 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
369 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
370 * plaintext or static WEP keys). */
371 return 0;
372 }
373 #endif /* IEEE8021X_EAPOL */
374
375 return 1;
376 }
377
378
379 /**
380 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
381 * @wpa_s: pointer to wpa_supplicant data
382 * @ssid: Configuration data for the network
383 * Returns: 0 on success, -1 on failure
384 *
385 * This function is called when starting authentication with a network that is
386 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
387 */
wpa_supplicant_scard_init(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)388 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
389 struct wpa_ssid *ssid)
390 {
391 #ifdef IEEE8021X_EAPOL
392 #ifdef PCSC_FUNCS
393 int aka = 0, sim = 0;
394
395 if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
396 wpa_s->scard != NULL || wpa_s->conf->external_sim)
397 return 0;
398
399 if (ssid == NULL || ssid->eap.eap_methods == NULL) {
400 sim = 1;
401 aka = 1;
402 } else {
403 struct eap_method_type *eap = ssid->eap.eap_methods;
404 while (eap->vendor != EAP_VENDOR_IETF ||
405 eap->method != EAP_TYPE_NONE) {
406 if (eap->vendor == EAP_VENDOR_IETF) {
407 if (eap->method == EAP_TYPE_SIM)
408 sim = 1;
409 else if (eap->method == EAP_TYPE_AKA ||
410 eap->method == EAP_TYPE_AKA_PRIME)
411 aka = 1;
412 }
413 eap++;
414 }
415 }
416
417 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
418 sim = 0;
419 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
420 eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
421 NULL)
422 aka = 0;
423
424 if (!sim && !aka) {
425 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
426 "use SIM, but neither EAP-SIM nor EAP-AKA are "
427 "enabled");
428 return 0;
429 }
430
431 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
432 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
433
434 wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
435 if (wpa_s->scard == NULL) {
436 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
437 "(pcsc-lite)");
438 return -1;
439 }
440 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
441 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
442 #endif /* PCSC_FUNCS */
443 #endif /* IEEE8021X_EAPOL */
444
445 return 0;
446 }
447
448
449 #ifndef CONFIG_NO_SCAN_PROCESSING
450
has_wep_key(struct wpa_ssid * ssid)451 static int has_wep_key(struct wpa_ssid *ssid)
452 {
453 int i;
454
455 for (i = 0; i < NUM_WEP_KEYS; i++) {
456 if (ssid->wep_key_len[i])
457 return 1;
458 }
459
460 return 0;
461 }
462
463
wpa_supplicant_match_privacy(struct wpa_bss * bss,struct wpa_ssid * ssid)464 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
465 struct wpa_ssid *ssid)
466 {
467 int privacy = 0;
468
469 if (ssid->mixed_cell)
470 return 1;
471
472 #ifdef CONFIG_WPS
473 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
474 return 1;
475 #endif /* CONFIG_WPS */
476
477 if (has_wep_key(ssid))
478 privacy = 1;
479
480 #ifdef IEEE8021X_EAPOL
481 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
482 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
483 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
484 privacy = 1;
485 #endif /* IEEE8021X_EAPOL */
486
487 if (wpa_key_mgmt_wpa(ssid->key_mgmt))
488 privacy = 1;
489
490 if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
491 privacy = 1;
492
493 if (bss->caps & IEEE80211_CAP_PRIVACY)
494 return privacy;
495 return !privacy;
496 }
497
498
wpa_supplicant_ssid_bss_match(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct wpa_bss * bss)499 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
500 struct wpa_ssid *ssid,
501 struct wpa_bss *bss)
502 {
503 struct wpa_ie_data ie;
504 int proto_match = 0;
505 const u8 *rsn_ie, *wpa_ie;
506 int ret;
507 int wep_ok;
508
509 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
510 if (ret >= 0)
511 return ret;
512
513 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
514 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
515 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
516 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
517 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
518
519 rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
520 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
521 proto_match++;
522
523 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
524 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
525 "failed");
526 break;
527 }
528
529 if (wep_ok &&
530 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
531 {
532 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
533 "in RSN IE");
534 return 1;
535 }
536
537 if (!(ie.proto & ssid->proto)) {
538 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
539 "mismatch");
540 break;
541 }
542
543 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
544 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
545 "cipher mismatch");
546 break;
547 }
548
549 if (!(ie.group_cipher & ssid->group_cipher)) {
550 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
551 "cipher mismatch");
552 break;
553 }
554
555 if (!(ie.key_mgmt & ssid->key_mgmt)) {
556 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
557 "mismatch");
558 break;
559 }
560
561 #ifdef CONFIG_IEEE80211W
562 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
563 wpas_get_ssid_pmf(wpa_s, ssid) ==
564 MGMT_FRAME_PROTECTION_REQUIRED) {
565 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
566 "frame protection");
567 break;
568 }
569 #endif /* CONFIG_IEEE80211W */
570 if ((ie.capabilities & WPA_CAPABILITY_MFPR) &&
571 wpas_get_ssid_pmf(wpa_s, ssid) ==
572 NO_MGMT_FRAME_PROTECTION) {
573 wpa_dbg(wpa_s, MSG_DEBUG,
574 " skip RSN IE - no mgmt frame protection enabled but AP requires it");
575 break;
576 }
577 #ifdef CONFIG_MBO
578 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
579 wpas_mbo_get_bss_attr(bss, MBO_ATTR_ID_AP_CAPA_IND) &&
580 wpas_get_ssid_pmf(wpa_s, ssid) !=
581 NO_MGMT_FRAME_PROTECTION) {
582 wpa_dbg(wpa_s, MSG_DEBUG,
583 " skip RSN IE - no mgmt frame protection enabled on MBO AP");
584 break;
585 }
586 #endif /* CONFIG_MBO */
587
588 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
589 return 1;
590 }
591
592 wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
593 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
594 proto_match++;
595
596 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
597 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
598 "failed");
599 break;
600 }
601
602 if (wep_ok &&
603 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
604 {
605 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
606 "in WPA IE");
607 return 1;
608 }
609
610 if (!(ie.proto & ssid->proto)) {
611 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
612 "mismatch");
613 break;
614 }
615
616 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
617 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
618 "cipher mismatch");
619 break;
620 }
621
622 if (!(ie.group_cipher & ssid->group_cipher)) {
623 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
624 "cipher mismatch");
625 break;
626 }
627
628 if (!(ie.key_mgmt & ssid->key_mgmt)) {
629 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
630 "mismatch");
631 break;
632 }
633
634 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
635 return 1;
636 }
637
638 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
639 !rsn_ie) {
640 wpa_dbg(wpa_s, MSG_DEBUG, " allow for non-WPA IEEE 802.1X");
641 return 1;
642 }
643
644 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
645 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
646 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
647 return 0;
648 }
649
650 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
651 wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
652 wpa_dbg(wpa_s, MSG_DEBUG, " allow in OSEN");
653 return 1;
654 }
655
656 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
657 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
658 return 1;
659 }
660
661 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with "
662 "WPA/WPA2");
663
664 return 0;
665 }
666
667
freq_allowed(int * freqs,int freq)668 static int freq_allowed(int *freqs, int freq)
669 {
670 int i;
671
672 if (freqs == NULL)
673 return 1;
674
675 for (i = 0; freqs[i]; i++)
676 if (freqs[i] == freq)
677 return 1;
678 return 0;
679 }
680
681
rate_match(struct wpa_supplicant * wpa_s,struct wpa_bss * bss)682 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
683 {
684 const struct hostapd_hw_modes *mode = NULL, *modes;
685 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
686 const u8 *rate_ie;
687 int i, j, k;
688
689 if (bss->freq == 0)
690 return 1; /* Cannot do matching without knowing band */
691
692 modes = wpa_s->hw.modes;
693 if (modes == NULL) {
694 /*
695 * The driver does not provide any additional information
696 * about the utilized hardware, so allow the connection attempt
697 * to continue.
698 */
699 return 1;
700 }
701
702 for (i = 0; i < wpa_s->hw.num_modes; i++) {
703 for (j = 0; j < modes[i].num_channels; j++) {
704 int freq = modes[i].channels[j].freq;
705 if (freq == bss->freq) {
706 if (mode &&
707 mode->mode == HOSTAPD_MODE_IEEE80211G)
708 break; /* do not allow 802.11b replace
709 * 802.11g */
710 mode = &modes[i];
711 break;
712 }
713 }
714 }
715
716 if (mode == NULL)
717 return 0;
718
719 for (i = 0; i < (int) sizeof(scan_ie); i++) {
720 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
721 if (rate_ie == NULL)
722 continue;
723
724 for (j = 2; j < rate_ie[1] + 2; j++) {
725 int flagged = !!(rate_ie[j] & 0x80);
726 int r = (rate_ie[j] & 0x7f) * 5;
727
728 /*
729 * IEEE Std 802.11n-2009 7.3.2.2:
730 * The new BSS Membership selector value is encoded
731 * like a legacy basic rate, but it is not a rate and
732 * only indicates if the BSS members are required to
733 * support the mandatory features of Clause 20 [HT PHY]
734 * in order to join the BSS.
735 */
736 if (flagged && ((rate_ie[j] & 0x7f) ==
737 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
738 if (!ht_supported(mode)) {
739 wpa_dbg(wpa_s, MSG_DEBUG,
740 " hardware does not support "
741 "HT PHY");
742 return 0;
743 }
744 continue;
745 }
746
747 /* There's also a VHT selector for 802.11ac */
748 if (flagged && ((rate_ie[j] & 0x7f) ==
749 BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
750 if (!vht_supported(mode)) {
751 wpa_dbg(wpa_s, MSG_DEBUG,
752 " hardware does not support "
753 "VHT PHY");
754 return 0;
755 }
756 continue;
757 }
758
759 if (!flagged)
760 continue;
761
762 /* check for legacy basic rates */
763 for (k = 0; k < mode->num_rates; k++) {
764 if (mode->rates[k] == r)
765 break;
766 }
767 if (k == mode->num_rates) {
768 /*
769 * IEEE Std 802.11-2007 7.3.2.2 demands that in
770 * order to join a BSS all required rates
771 * have to be supported by the hardware.
772 */
773 wpa_dbg(wpa_s, MSG_DEBUG,
774 " hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)",
775 r / 10, r % 10,
776 bss->freq, mode->mode, mode->num_rates);
777 return 0;
778 }
779 }
780 }
781
782 return 1;
783 }
784
785
786 /*
787 * Test whether BSS is in an ESS.
788 * This is done differently in DMG (60 GHz) and non-DMG bands
789 */
bss_is_ess(struct wpa_bss * bss)790 static int bss_is_ess(struct wpa_bss *bss)
791 {
792 if (bss_is_dmg(bss)) {
793 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
794 IEEE80211_CAP_DMG_AP;
795 }
796
797 return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
798 IEEE80211_CAP_ESS);
799 }
800
801
match_mac_mask(const u8 * addr_a,const u8 * addr_b,const u8 * mask)802 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
803 {
804 size_t i;
805
806 for (i = 0; i < ETH_ALEN; i++) {
807 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
808 return 0;
809 }
810 return 1;
811 }
812
813
addr_in_list(const u8 * addr,const u8 * list,size_t num)814 static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
815 {
816 size_t i;
817
818 for (i = 0; i < num; i++) {
819 const u8 *a = list + i * ETH_ALEN * 2;
820 const u8 *m = a + ETH_ALEN;
821
822 if (match_mac_mask(a, addr, m))
823 return 1;
824 }
825 return 0;
826 }
827
828
wpa_scan_res_match(struct wpa_supplicant * wpa_s,int i,struct wpa_bss * bss,struct wpa_ssid * group,int only_first_ssid)829 struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
830 int i, struct wpa_bss *bss,
831 struct wpa_ssid *group,
832 int only_first_ssid)
833 {
834 u8 wpa_ie_len, rsn_ie_len;
835 int wpa;
836 struct wpa_blacklist *e;
837 const u8 *ie;
838 struct wpa_ssid *ssid;
839 int osen;
840 #ifdef CONFIG_MBO
841 const u8 *assoc_disallow;
842 #endif /* CONFIG_MBO */
843
844 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
845 wpa_ie_len = ie ? ie[1] : 0;
846
847 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
848 rsn_ie_len = ie ? ie[1] : 0;
849
850 ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
851 osen = ie != NULL;
852
853 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
854 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d freq=%d %s%s%s",
855 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
856 wpa_ie_len, rsn_ie_len, bss->caps, bss->level, bss->freq,
857 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
858 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
859 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
860 " p2p" : "",
861 osen ? " osen=1" : "");
862
863 e = wpa_blacklist_get(wpa_s, bss->bssid);
864 if (e) {
865 int limit = 1;
866 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
867 /*
868 * When only a single network is enabled, we can
869 * trigger blacklisting on the first failure. This
870 * should not be done with multiple enabled networks to
871 * avoid getting forced to move into a worse ESS on
872 * single error if there are no other BSSes of the
873 * current ESS.
874 */
875 limit = 0;
876 }
877 if (e->count > limit) {
878 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
879 "(count=%d limit=%d)", e->count, limit);
880 return NULL;
881 }
882 }
883
884 if (bss->ssid_len == 0) {
885 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
886 return NULL;
887 }
888
889 if (disallowed_bssid(wpa_s, bss->bssid)) {
890 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed");
891 return NULL;
892 }
893
894 if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
895 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed");
896 return NULL;
897 }
898
899 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
900
901 for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
902 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
903 int res;
904
905 if (wpas_network_disabled(wpa_s, ssid)) {
906 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
907 continue;
908 }
909
910 res = wpas_temp_disabled(wpa_s, ssid);
911 if (res > 0) {
912 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled "
913 "temporarily for %d second(s)", res);
914 continue;
915 }
916
917 #ifdef CONFIG_WPS
918 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
919 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
920 "(WPS)");
921 continue;
922 }
923
924 if (wpa && ssid->ssid_len == 0 &&
925 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
926 check_ssid = 0;
927
928 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
929 /* Only allow wildcard SSID match if an AP
930 * advertises active WPS operation that matches
931 * with our mode. */
932 check_ssid = 1;
933 if (ssid->ssid_len == 0 &&
934 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
935 check_ssid = 0;
936 }
937 #endif /* CONFIG_WPS */
938
939 if (ssid->bssid_set && ssid->ssid_len == 0 &&
940 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
941 check_ssid = 0;
942
943 if (check_ssid &&
944 (bss->ssid_len != ssid->ssid_len ||
945 os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
946 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
947 continue;
948 }
949
950 if (ssid->bssid_set &&
951 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
952 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
953 continue;
954 }
955
956 /* check blacklist */
957 if (ssid->num_bssid_blacklist &&
958 addr_in_list(bss->bssid, ssid->bssid_blacklist,
959 ssid->num_bssid_blacklist)) {
960 wpa_dbg(wpa_s, MSG_DEBUG,
961 " skip - BSSID blacklisted");
962 continue;
963 }
964
965 /* if there is a whitelist, only accept those APs */
966 if (ssid->num_bssid_whitelist &&
967 !addr_in_list(bss->bssid, ssid->bssid_whitelist,
968 ssid->num_bssid_whitelist)) {
969 wpa_dbg(wpa_s, MSG_DEBUG,
970 " skip - BSSID not in whitelist");
971 continue;
972 }
973
974 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
975 continue;
976
977 if (!osen && !wpa &&
978 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
979 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
980 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
981 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
982 "not allowed");
983 continue;
984 }
985
986 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
987 has_wep_key(ssid)) {
988 wpa_dbg(wpa_s, MSG_DEBUG, " skip - ignore WPA/WPA2 AP for WEP network block");
989 continue;
990 }
991
992 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
993 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-OSEN network "
994 "not allowed");
995 continue;
996 }
997
998 if (!wpa_supplicant_match_privacy(bss, ssid)) {
999 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
1000 "mismatch");
1001 continue;
1002 }
1003
1004 if (!bss_is_ess(bss) && !bss_is_pbss(bss)) {
1005 wpa_dbg(wpa_s, MSG_DEBUG, " skip - neither ESS nor PBSS network");
1006 continue;
1007 }
1008
1009 if (ssid->pbss != bss_is_pbss(bss)) {
1010 wpa_dbg(wpa_s, MSG_DEBUG, " skip - PBSS mismatch (ssid %d bss %d)",
1011 ssid->pbss, bss_is_pbss(bss));
1012 continue;
1013 }
1014
1015 if (!freq_allowed(ssid->freq_list, bss->freq)) {
1016 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
1017 "allowed");
1018 continue;
1019 }
1020
1021 if (!rate_match(wpa_s, bss)) {
1022 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do "
1023 "not match");
1024 continue;
1025 }
1026
1027 #ifdef CONFIG_P2P
1028 if (ssid->p2p_group &&
1029 !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
1030 !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
1031 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P IE seen");
1032 continue;
1033 }
1034
1035 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
1036 struct wpabuf *p2p_ie;
1037 u8 dev_addr[ETH_ALEN];
1038
1039 ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
1040 if (ie == NULL) {
1041 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P element");
1042 continue;
1043 }
1044 p2p_ie = wpa_bss_get_vendor_ie_multi(
1045 bss, P2P_IE_VENDOR_TYPE);
1046 if (p2p_ie == NULL) {
1047 wpa_dbg(wpa_s, MSG_DEBUG, " skip - could not fetch P2P element");
1048 continue;
1049 }
1050
1051 if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
1052 || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
1053 ETH_ALEN) != 0) {
1054 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no matching GO P2P Device Address in P2P element");
1055 wpabuf_free(p2p_ie);
1056 continue;
1057 }
1058 wpabuf_free(p2p_ie);
1059 }
1060
1061 /*
1062 * TODO: skip the AP if its P2P IE has Group Formation
1063 * bit set in the P2P Group Capability Bitmap and we
1064 * are not in Group Formation with that device.
1065 */
1066 #endif /* CONFIG_P2P */
1067
1068 if (os_reltime_before(&bss->last_update, &wpa_s->scan_min_time))
1069 {
1070 struct os_reltime diff;
1071
1072 os_reltime_sub(&wpa_s->scan_min_time,
1073 &bss->last_update, &diff);
1074 wpa_dbg(wpa_s, MSG_DEBUG,
1075 " skip - scan result not recent enough (%u.%06u seconds too old)",
1076 (unsigned int) diff.sec,
1077 (unsigned int) diff.usec);
1078 continue;
1079 }
1080 #ifdef CONFIG_MBO
1081 assoc_disallow = wpas_mbo_get_bss_attr(
1082 bss, MBO_ATTR_ID_ASSOC_DISALLOW);
1083 if (assoc_disallow && assoc_disallow[1] >= 1) {
1084 wpa_dbg(wpa_s, MSG_DEBUG,
1085 " skip - MBO association disallowed (reason %u)",
1086 assoc_disallow[2]);
1087 continue;
1088 }
1089
1090 if (wpa_is_bss_tmp_disallowed(wpa_s, bss->bssid)) {
1091 wpa_dbg(wpa_s, MSG_DEBUG,
1092 " skip - MBO retry delay has not passed yet");
1093 continue;
1094 }
1095 #endif /* CONFIG_MBO */
1096
1097 /* Matching configuration found */
1098 return ssid;
1099 }
1100
1101 /* No matching configuration found */
1102 return NULL;
1103 }
1104
1105
1106 static struct wpa_bss *
wpa_supplicant_select_bss(struct wpa_supplicant * wpa_s,struct wpa_ssid * group,struct wpa_ssid ** selected_ssid,int only_first_ssid)1107 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
1108 struct wpa_ssid *group,
1109 struct wpa_ssid **selected_ssid,
1110 int only_first_ssid)
1111 {
1112 unsigned int i;
1113
1114 if (only_first_ssid)
1115 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
1116 group->id);
1117 else
1118 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
1119 group->priority);
1120
1121 for (i = 0; i < wpa_s->last_scan_res_used; i++) {
1122 struct wpa_bss *bss = wpa_s->last_scan_res[i];
1123 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
1124 only_first_ssid);
1125 if (!*selected_ssid)
1126 continue;
1127 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
1128 " ssid='%s'",
1129 MAC2STR(bss->bssid),
1130 wpa_ssid_txt(bss->ssid, bss->ssid_len));
1131 return bss;
1132 }
1133
1134 return NULL;
1135 }
1136
1137
wpa_supplicant_pick_network(struct wpa_supplicant * wpa_s,struct wpa_ssid ** selected_ssid)1138 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1139 struct wpa_ssid **selected_ssid)
1140 {
1141 struct wpa_bss *selected = NULL;
1142 int prio;
1143 struct wpa_ssid *next_ssid = NULL;
1144 struct wpa_ssid *ssid;
1145
1146 if (wpa_s->last_scan_res == NULL ||
1147 wpa_s->last_scan_res_used == 0)
1148 return NULL; /* no scan results from last update */
1149
1150 if (wpa_s->next_ssid) {
1151 /* check that next_ssid is still valid */
1152 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1153 if (ssid == wpa_s->next_ssid)
1154 break;
1155 }
1156 next_ssid = ssid;
1157 wpa_s->next_ssid = NULL;
1158 }
1159
1160 while (selected == NULL) {
1161 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1162 if (next_ssid && next_ssid->priority ==
1163 wpa_s->conf->pssid[prio]->priority) {
1164 selected = wpa_supplicant_select_bss(
1165 wpa_s, next_ssid, selected_ssid, 1);
1166 if (selected)
1167 break;
1168 }
1169 selected = wpa_supplicant_select_bss(
1170 wpa_s, wpa_s->conf->pssid[prio],
1171 selected_ssid, 0);
1172 if (selected)
1173 break;
1174 }
1175
1176 if (selected == NULL && wpa_s->blacklist &&
1177 !wpa_s->countermeasures) {
1178 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1179 "blacklist and try again");
1180 wpa_blacklist_clear(wpa_s);
1181 wpa_s->blacklist_cleared++;
1182 } else if (selected == NULL)
1183 break;
1184 }
1185
1186 ssid = *selected_ssid;
1187 if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set &&
1188 !ssid->passphrase && !ssid->ext_psk) {
1189 const char *field_name, *txt = NULL;
1190
1191 wpa_dbg(wpa_s, MSG_DEBUG,
1192 "PSK/passphrase not yet available for the selected network");
1193
1194 wpas_notify_network_request(wpa_s, ssid,
1195 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL);
1196
1197 field_name = wpa_supplicant_ctrl_req_to_string(
1198 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt);
1199 if (field_name == NULL)
1200 return NULL;
1201
1202 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
1203
1204 selected = NULL;
1205 }
1206
1207 return selected;
1208 }
1209
1210
wpa_supplicant_req_new_scan(struct wpa_supplicant * wpa_s,int timeout_sec,int timeout_usec)1211 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1212 int timeout_sec, int timeout_usec)
1213 {
1214 if (!wpa_supplicant_enabled_networks(wpa_s)) {
1215 /*
1216 * No networks are enabled; short-circuit request so
1217 * we don't wait timeout seconds before transitioning
1218 * to INACTIVE state.
1219 */
1220 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1221 "since there are no enabled networks");
1222 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1223 return;
1224 }
1225
1226 wpa_s->scan_for_connection = 1;
1227 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1228 }
1229
1230
wpa_supplicant_connect(struct wpa_supplicant * wpa_s,struct wpa_bss * selected,struct wpa_ssid * ssid)1231 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1232 struct wpa_bss *selected,
1233 struct wpa_ssid *ssid)
1234 {
1235 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1236 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1237 "PBC session overlap");
1238 wpas_notify_wps_event_pbc_overlap(wpa_s);
1239 #ifdef CONFIG_P2P
1240 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1241 wpa_s->p2p_in_provisioning) {
1242 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1243 wpa_s, NULL);
1244 return -1;
1245 }
1246 #endif /* CONFIG_P2P */
1247
1248 #ifdef CONFIG_WPS
1249 wpas_wps_pbc_overlap(wpa_s);
1250 wpas_wps_cancel(wpa_s);
1251 #endif /* CONFIG_WPS */
1252 return -1;
1253 }
1254
1255 wpa_msg(wpa_s, MSG_DEBUG,
1256 "Considering connect request: reassociate: %d selected: "
1257 MACSTR " bssid: " MACSTR " pending: " MACSTR
1258 " wpa_state: %s ssid=%p current_ssid=%p",
1259 wpa_s->reassociate, MAC2STR(selected->bssid),
1260 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1261 wpa_supplicant_state_txt(wpa_s->wpa_state),
1262 ssid, wpa_s->current_ssid);
1263
1264 /*
1265 * Do not trigger new association unless the BSSID has changed or if
1266 * reassociation is requested. If we are in process of associating with
1267 * the selected BSSID, do not trigger new attempt.
1268 */
1269 if (wpa_s->reassociate ||
1270 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1271 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1272 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1273 (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1274 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1275 0) ||
1276 (is_zero_ether_addr(wpa_s->pending_bssid) &&
1277 ssid != wpa_s->current_ssid)))) {
1278 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1279 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1280 return 0;
1281 }
1282 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1283 MAC2STR(selected->bssid));
1284 wpa_supplicant_associate(wpa_s, selected, ssid);
1285 } else {
1286 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1287 "connect with the selected AP");
1288 }
1289
1290 return 0;
1291 }
1292
1293
1294 static struct wpa_ssid *
wpa_supplicant_pick_new_network(struct wpa_supplicant * wpa_s)1295 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1296 {
1297 int prio;
1298 struct wpa_ssid *ssid;
1299
1300 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1301 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1302 {
1303 if (wpas_network_disabled(wpa_s, ssid))
1304 continue;
1305 if (ssid->mode == IEEE80211_MODE_IBSS ||
1306 ssid->mode == IEEE80211_MODE_AP ||
1307 ssid->mode == IEEE80211_MODE_MESH)
1308 return ssid;
1309 }
1310 }
1311 return NULL;
1312 }
1313
1314
1315 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1316 * on BSS added and BSS changed events */
wpa_supplicant_rsn_preauth_scan_results(struct wpa_supplicant * wpa_s)1317 static void wpa_supplicant_rsn_preauth_scan_results(
1318 struct wpa_supplicant *wpa_s)
1319 {
1320 struct wpa_bss *bss;
1321
1322 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1323 return;
1324
1325 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1326 const u8 *ssid, *rsn;
1327
1328 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1329 if (ssid == NULL)
1330 continue;
1331
1332 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1333 if (rsn == NULL)
1334 continue;
1335
1336 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1337 }
1338
1339 }
1340
1341
wpa_supplicant_need_to_roam(struct wpa_supplicant * wpa_s,struct wpa_bss * selected,struct wpa_ssid * ssid)1342 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1343 struct wpa_bss *selected,
1344 struct wpa_ssid *ssid)
1345 {
1346 struct wpa_bss *current_bss = NULL;
1347 #ifndef CONFIG_NO_ROAMING
1348 int min_diff;
1349 int to_5ghz;
1350 #endif /* CONFIG_NO_ROAMING */
1351
1352 if (wpa_s->reassociate)
1353 return 1; /* explicit request to reassociate */
1354 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1355 return 1; /* we are not associated; continue */
1356 if (wpa_s->current_ssid == NULL)
1357 return 1; /* unknown current SSID */
1358 if (wpa_s->current_ssid != ssid)
1359 return 1; /* different network block */
1360
1361 if (wpas_driver_bss_selection(wpa_s))
1362 return 0; /* Driver-based roaming */
1363
1364 if (wpa_s->current_ssid->ssid)
1365 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1366 wpa_s->current_ssid->ssid,
1367 wpa_s->current_ssid->ssid_len);
1368 if (!current_bss)
1369 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1370
1371 if (!current_bss)
1372 return 1; /* current BSS not seen in scan results */
1373
1374 if (current_bss == selected)
1375 return 0;
1376
1377 if (selected->last_update_idx > current_bss->last_update_idx)
1378 return 1; /* current BSS not seen in the last scan */
1379
1380 #ifndef CONFIG_NO_ROAMING
1381 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1382 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1383 " level=%d snr=%d est_throughput=%u",
1384 MAC2STR(current_bss->bssid), current_bss->level,
1385 current_bss->snr, current_bss->est_throughput);
1386 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1387 " level=%d snr=%d est_throughput=%u",
1388 MAC2STR(selected->bssid), selected->level,
1389 selected->snr, selected->est_throughput);
1390
1391 if (wpa_s->current_ssid->bssid_set &&
1392 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1393 0) {
1394 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1395 "has preferred BSSID");
1396 return 1;
1397 }
1398
1399 if (selected->est_throughput > current_bss->est_throughput + 5000) {
1400 wpa_dbg(wpa_s, MSG_DEBUG,
1401 "Allow reassociation - selected BSS has better estimated throughput");
1402 return 1;
1403 }
1404
1405 to_5ghz = selected->freq > 4000 && current_bss->freq < 4000;
1406
1407 if (current_bss->level < 0 &&
1408 current_bss->level > selected->level + to_5ghz * 2) {
1409 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1410 "signal level");
1411 return 0;
1412 }
1413
1414 min_diff = 2;
1415 if (current_bss->level < 0) {
1416 if (current_bss->level < -85)
1417 min_diff = 1;
1418 else if (current_bss->level < -80)
1419 min_diff = 2;
1420 else if (current_bss->level < -75)
1421 min_diff = 3;
1422 else if (current_bss->level < -70)
1423 min_diff = 4;
1424 else
1425 min_diff = 5;
1426 }
1427 if (to_5ghz) {
1428 /* Make it easier to move to 5 GHz band */
1429 if (min_diff > 2)
1430 min_diff -= 2;
1431 else
1432 min_diff = 0;
1433 }
1434 if (abs(current_bss->level - selected->level) < min_diff) {
1435 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1436 "in signal level");
1437 return 0;
1438 }
1439
1440 return 1;
1441 #else /* CONFIG_NO_ROAMING */
1442 return 0;
1443 #endif /* CONFIG_NO_ROAMING */
1444 }
1445
1446
1447 /* Return != 0 if no scan results could be fetched or if scan results should not
1448 * be shared with other virtual interfaces. */
_wpa_supplicant_event_scan_results(struct wpa_supplicant * wpa_s,union wpa_event_data * data,int own_request)1449 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1450 union wpa_event_data *data,
1451 int own_request)
1452 {
1453 struct wpa_scan_results *scan_res = NULL;
1454 int ret = 0;
1455 int ap = 0;
1456 #ifndef CONFIG_NO_RANDOM_POOL
1457 size_t i, num;
1458 #endif /* CONFIG_NO_RANDOM_POOL */
1459
1460 #ifdef CONFIG_AP
1461 if (wpa_s->ap_iface)
1462 ap = 1;
1463 #endif /* CONFIG_AP */
1464
1465 wpa_supplicant_notify_scanning(wpa_s, 0);
1466
1467 scan_res = wpa_supplicant_get_scan_results(wpa_s,
1468 data ? &data->scan_info :
1469 NULL, 1);
1470 if (scan_res == NULL) {
1471 if (wpa_s->conf->ap_scan == 2 || ap ||
1472 wpa_s->scan_res_handler == scan_only_handler)
1473 return -1;
1474 if (!own_request)
1475 return -1;
1476 if (data && data->scan_info.external_scan)
1477 return -1;
1478 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1479 "scanning again");
1480 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1481 ret = -1;
1482 goto scan_work_done;
1483 }
1484
1485 #ifndef CONFIG_NO_RANDOM_POOL
1486 num = scan_res->num;
1487 if (num > 10)
1488 num = 10;
1489 for (i = 0; i < num; i++) {
1490 u8 buf[5];
1491 struct wpa_scan_res *res = scan_res->res[i];
1492 buf[0] = res->bssid[5];
1493 buf[1] = res->qual & 0xff;
1494 buf[2] = res->noise & 0xff;
1495 buf[3] = res->level & 0xff;
1496 buf[4] = res->tsf & 0xff;
1497 random_add_randomness(buf, sizeof(buf));
1498 }
1499 #endif /* CONFIG_NO_RANDOM_POOL */
1500
1501 if (own_request && wpa_s->scan_res_handler &&
1502 !(data && data->scan_info.external_scan)) {
1503 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1504 struct wpa_scan_results *scan_res);
1505
1506 scan_res_handler = wpa_s->scan_res_handler;
1507 wpa_s->scan_res_handler = NULL;
1508 scan_res_handler(wpa_s, scan_res);
1509 ret = -2;
1510 goto scan_work_done;
1511 }
1512
1513 if (ap) {
1514 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1515 #ifdef CONFIG_AP
1516 if (wpa_s->ap_iface->scan_cb)
1517 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1518 #endif /* CONFIG_AP */
1519 goto scan_work_done;
1520 }
1521
1522 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1523 wpa_s->own_scan_running,
1524 data ? data->scan_info.external_scan : 0);
1525 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1526 wpa_s->manual_scan_use_id && wpa_s->own_scan_running &&
1527 own_request && !(data && data->scan_info.external_scan)) {
1528 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1529 wpa_s->manual_scan_id);
1530 wpa_s->manual_scan_use_id = 0;
1531 } else {
1532 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1533 }
1534 wpas_notify_scan_results(wpa_s);
1535
1536 wpas_notify_scan_done(wpa_s, 1);
1537
1538 if (data && data->scan_info.external_scan) {
1539 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1540 wpa_scan_results_free(scan_res);
1541 return 0;
1542 }
1543
1544 if (wnm_scan_process(wpa_s, 1) > 0)
1545 goto scan_work_done;
1546
1547 if (sme_proc_obss_scan(wpa_s) > 0)
1548 goto scan_work_done;
1549
1550 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1551 goto scan_work_done;
1552
1553 if (autoscan_notify_scan(wpa_s, scan_res))
1554 goto scan_work_done;
1555
1556 if (wpa_s->disconnected) {
1557 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1558 goto scan_work_done;
1559 }
1560
1561 if (!wpas_driver_bss_selection(wpa_s) &&
1562 bgscan_notify_scan(wpa_s, scan_res) == 1)
1563 goto scan_work_done;
1564
1565 wpas_wps_update_ap_info(wpa_s, scan_res);
1566
1567 if (wpa_s->wpa_state >= WPA_AUTHENTICATING &&
1568 wpa_s->wpa_state < WPA_COMPLETED)
1569 goto scan_work_done;
1570
1571 wpa_scan_results_free(scan_res);
1572
1573 if (own_request && wpa_s->scan_work) {
1574 struct wpa_radio_work *work = wpa_s->scan_work;
1575 wpa_s->scan_work = NULL;
1576 radio_work_done(work);
1577 }
1578
1579 return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1580
1581 scan_work_done:
1582 wpa_scan_results_free(scan_res);
1583 if (own_request && wpa_s->scan_work) {
1584 struct wpa_radio_work *work = wpa_s->scan_work;
1585 wpa_s->scan_work = NULL;
1586 radio_work_done(work);
1587 }
1588 return ret;
1589 }
1590
1591
wpas_select_network_from_last_scan(struct wpa_supplicant * wpa_s,int new_scan,int own_request)1592 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1593 int new_scan, int own_request)
1594 {
1595 struct wpa_bss *selected;
1596 struct wpa_ssid *ssid = NULL;
1597 int time_to_reenable = wpas_reenabled_network_time(wpa_s);
1598
1599 if (time_to_reenable > 0) {
1600 wpa_dbg(wpa_s, MSG_DEBUG,
1601 "Postpone network selection by %d seconds since all networks are disabled",
1602 time_to_reenable);
1603 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
1604 eloop_register_timeout(time_to_reenable, 0,
1605 wpas_network_reenabled, wpa_s, NULL);
1606 return 0;
1607 }
1608
1609 if (wpa_s->p2p_mgmt)
1610 return 0; /* no normal connection on p2p_mgmt interface */
1611
1612 selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1613
1614 if (selected) {
1615 int skip;
1616 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1617 if (skip) {
1618 if (new_scan)
1619 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1620 return 0;
1621 }
1622
1623 if (ssid != wpa_s->current_ssid &&
1624 wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1625 wpa_s->own_disconnect_req = 1;
1626 wpa_supplicant_deauthenticate(
1627 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1628 }
1629
1630 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1631 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1632 return -1;
1633 }
1634 if (new_scan)
1635 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1636 /*
1637 * Do not notify other virtual radios of scan results since we do not
1638 * want them to start other associations at the same time.
1639 */
1640 return 1;
1641 } else {
1642 #ifdef CONFIG_MESH
1643 if (wpa_s->ifmsh) {
1644 wpa_msg(wpa_s, MSG_INFO,
1645 "Avoiding join because we already joined a mesh group");
1646 return 0;
1647 }
1648 #endif /* CONFIG_MESH */
1649 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1650 ssid = wpa_supplicant_pick_new_network(wpa_s);
1651 if (ssid) {
1652 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1653 wpa_supplicant_associate(wpa_s, NULL, ssid);
1654 if (new_scan)
1655 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1656 } else if (own_request) {
1657 /*
1658 * No SSID found. If SCAN results are as a result of
1659 * own scan request and not due to a scan request on
1660 * another shared interface, try another scan.
1661 */
1662 int timeout_sec = wpa_s->scan_interval;
1663 int timeout_usec = 0;
1664 #ifdef CONFIG_P2P
1665 int res;
1666
1667 res = wpas_p2p_scan_no_go_seen(wpa_s);
1668 if (res == 2)
1669 return 2;
1670 if (res == 1)
1671 return 0;
1672
1673 if (wpa_s->p2p_in_provisioning ||
1674 wpa_s->show_group_started ||
1675 wpa_s->p2p_in_invitation) {
1676 /*
1677 * Use shorter wait during P2P Provisioning
1678 * state and during P2P join-a-group operation
1679 * to speed up group formation.
1680 */
1681 timeout_sec = 0;
1682 timeout_usec = 250000;
1683 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1684 timeout_usec);
1685 return 0;
1686 }
1687 #endif /* CONFIG_P2P */
1688 #ifdef CONFIG_INTERWORKING
1689 if (wpa_s->conf->auto_interworking &&
1690 wpa_s->conf->interworking &&
1691 wpa_s->conf->cred) {
1692 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1693 "start ANQP fetch since no matching "
1694 "networks found");
1695 wpa_s->network_select = 1;
1696 wpa_s->auto_network_select = 1;
1697 interworking_start_fetch_anqp(wpa_s);
1698 return 1;
1699 }
1700 #endif /* CONFIG_INTERWORKING */
1701 #ifdef CONFIG_WPS
1702 if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1703 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1704 timeout_sec = 0;
1705 timeout_usec = 500000;
1706 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1707 timeout_usec);
1708 return 0;
1709 }
1710 #endif /* CONFIG_WPS */
1711 if (wpa_supplicant_req_sched_scan(wpa_s))
1712 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1713 timeout_usec);
1714
1715 wpa_msg_ctrl(wpa_s, MSG_INFO,
1716 WPA_EVENT_NETWORK_NOT_FOUND);
1717 }
1718 }
1719 return 0;
1720 }
1721
1722
wpa_supplicant_event_scan_results(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1723 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1724 union wpa_event_data *data)
1725 {
1726 struct wpa_supplicant *ifs;
1727 int res;
1728
1729 res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1730 if (res == 2) {
1731 /*
1732 * Interface may have been removed, so must not dereference
1733 * wpa_s after this.
1734 */
1735 return 1;
1736 }
1737 if (res != 0) {
1738 /*
1739 * If no scan results could be fetched, then no need to
1740 * notify those interfaces that did not actually request
1741 * this scan. Similarly, if scan results started a new operation on this
1742 * interface, do not notify other interfaces to avoid concurrent
1743 * operations during a connection attempt.
1744 */
1745 return 0;
1746 }
1747
1748 /*
1749 * Check other interfaces to see if they share the same radio. If
1750 * so, they get updated with this same scan info.
1751 */
1752 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1753 radio_list) {
1754 if (ifs != wpa_s) {
1755 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1756 "sibling", ifs->ifname);
1757 _wpa_supplicant_event_scan_results(ifs, data, 0);
1758 }
1759 }
1760
1761 return 0;
1762 }
1763
1764 #endif /* CONFIG_NO_SCAN_PROCESSING */
1765
1766
wpa_supplicant_fast_associate(struct wpa_supplicant * wpa_s)1767 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1768 {
1769 #ifdef CONFIG_NO_SCAN_PROCESSING
1770 return -1;
1771 #else /* CONFIG_NO_SCAN_PROCESSING */
1772 struct os_reltime now;
1773
1774 if (wpa_s->last_scan_res_used == 0)
1775 return -1;
1776
1777 os_get_reltime(&now);
1778 if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1779 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1780 return -1;
1781 }
1782
1783 return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1784 #endif /* CONFIG_NO_SCAN_PROCESSING */
1785 }
1786
1787 #ifdef CONFIG_WNM
1788
wnm_bss_keep_alive(void * eloop_ctx,void * sock_ctx)1789 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1790 {
1791 struct wpa_supplicant *wpa_s = eloop_ctx;
1792
1793 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1794 return;
1795
1796 if (!wpa_s->no_keep_alive) {
1797 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1798 MAC2STR(wpa_s->bssid));
1799 /* TODO: could skip this if normal data traffic has been sent */
1800 /* TODO: Consider using some more appropriate data frame for
1801 * this */
1802 if (wpa_s->l2)
1803 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1804 (u8 *) "", 0);
1805 }
1806
1807 #ifdef CONFIG_SME
1808 if (wpa_s->sme.bss_max_idle_period) {
1809 unsigned int msec;
1810 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1811 if (msec > 100)
1812 msec -= 100;
1813 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1814 wnm_bss_keep_alive, wpa_s, NULL);
1815 }
1816 #endif /* CONFIG_SME */
1817 }
1818
1819
wnm_process_assoc_resp(struct wpa_supplicant * wpa_s,const u8 * ies,size_t ies_len)1820 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1821 const u8 *ies, size_t ies_len)
1822 {
1823 struct ieee802_11_elems elems;
1824
1825 if (ies == NULL)
1826 return;
1827
1828 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1829 return;
1830
1831 #ifdef CONFIG_SME
1832 if (elems.bss_max_idle_period) {
1833 unsigned int msec;
1834 wpa_s->sme.bss_max_idle_period =
1835 WPA_GET_LE16(elems.bss_max_idle_period);
1836 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1837 "TU)%s", wpa_s->sme.bss_max_idle_period,
1838 (elems.bss_max_idle_period[2] & 0x01) ?
1839 " (protected keep-live required)" : "");
1840 if (wpa_s->sme.bss_max_idle_period == 0)
1841 wpa_s->sme.bss_max_idle_period = 1;
1842 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1843 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1844 /* msec times 1000 */
1845 msec = wpa_s->sme.bss_max_idle_period * 1024;
1846 if (msec > 100)
1847 msec -= 100;
1848 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1849 wnm_bss_keep_alive, wpa_s,
1850 NULL);
1851 }
1852 }
1853 #endif /* CONFIG_SME */
1854 }
1855
1856 #endif /* CONFIG_WNM */
1857
1858
wnm_bss_keep_alive_deinit(struct wpa_supplicant * wpa_s)1859 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1860 {
1861 #ifdef CONFIG_WNM
1862 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1863 #endif /* CONFIG_WNM */
1864 }
1865
1866
1867 #ifdef CONFIG_INTERWORKING
1868
wpas_qos_map_set(struct wpa_supplicant * wpa_s,const u8 * qos_map,size_t len)1869 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1870 size_t len)
1871 {
1872 int res;
1873
1874 wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1875 res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1876 if (res) {
1877 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1878 }
1879
1880 return res;
1881 }
1882
1883
interworking_process_assoc_resp(struct wpa_supplicant * wpa_s,const u8 * ies,size_t ies_len)1884 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1885 const u8 *ies, size_t ies_len)
1886 {
1887 struct ieee802_11_elems elems;
1888
1889 if (ies == NULL)
1890 return;
1891
1892 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1893 return;
1894
1895 if (elems.qos_map_set) {
1896 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1897 elems.qos_map_set_len);
1898 }
1899 }
1900
1901 #endif /* CONFIG_INTERWORKING */
1902
1903
1904 #ifdef CONFIG_FST
wpas_fst_update_mbie(struct wpa_supplicant * wpa_s,const u8 * ie,size_t ie_len)1905 static int wpas_fst_update_mbie(struct wpa_supplicant *wpa_s,
1906 const u8 *ie, size_t ie_len)
1907 {
1908 struct mb_ies_info mb_ies;
1909
1910 if (!ie || !ie_len || !wpa_s->fst)
1911 return -ENOENT;
1912
1913 os_memset(&mb_ies, 0, sizeof(mb_ies));
1914
1915 while (ie_len >= 2 && mb_ies.nof_ies < MAX_NOF_MB_IES_SUPPORTED) {
1916 size_t len;
1917
1918 len = 2 + ie[1];
1919 if (len > ie_len) {
1920 wpa_hexdump(MSG_DEBUG, "FST: Truncated IE found",
1921 ie, ie_len);
1922 break;
1923 }
1924
1925 if (ie[0] == WLAN_EID_MULTI_BAND) {
1926 wpa_printf(MSG_DEBUG, "MB IE of %u bytes found",
1927 (unsigned int) len);
1928 mb_ies.ies[mb_ies.nof_ies].ie = ie + 2;
1929 mb_ies.ies[mb_ies.nof_ies].ie_len = len - 2;
1930 mb_ies.nof_ies++;
1931 }
1932
1933 ie_len -= len;
1934 ie += len;
1935 }
1936
1937 if (mb_ies.nof_ies > 0) {
1938 wpabuf_free(wpa_s->received_mb_ies);
1939 wpa_s->received_mb_ies = mb_ies_by_info(&mb_ies);
1940 return 0;
1941 }
1942
1943 return -ENOENT;
1944 }
1945 #endif /* CONFIG_FST */
1946
1947
wpa_supplicant_event_associnfo(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1948 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1949 union wpa_event_data *data)
1950 {
1951 int l, len, found = 0, wpa_found, rsn_found;
1952 const u8 *p;
1953 #ifdef CONFIG_IEEE80211R
1954 u8 bssid[ETH_ALEN];
1955 #endif /* CONFIG_IEEE80211R */
1956
1957 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1958 if (data->assoc_info.req_ies)
1959 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1960 data->assoc_info.req_ies_len);
1961 if (data->assoc_info.resp_ies) {
1962 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1963 data->assoc_info.resp_ies_len);
1964 #ifdef CONFIG_TDLS
1965 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1966 data->assoc_info.resp_ies_len);
1967 #endif /* CONFIG_TDLS */
1968 #ifdef CONFIG_WNM
1969 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1970 data->assoc_info.resp_ies_len);
1971 #endif /* CONFIG_WNM */
1972 #ifdef CONFIG_INTERWORKING
1973 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1974 data->assoc_info.resp_ies_len);
1975 #endif /* CONFIG_INTERWORKING */
1976 }
1977 if (data->assoc_info.beacon_ies)
1978 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1979 data->assoc_info.beacon_ies,
1980 data->assoc_info.beacon_ies_len);
1981 if (data->assoc_info.freq)
1982 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1983 data->assoc_info.freq);
1984
1985 p = data->assoc_info.req_ies;
1986 l = data->assoc_info.req_ies_len;
1987
1988 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1989 while (p && l >= 2) {
1990 len = p[1] + 2;
1991 if (len > l) {
1992 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1993 p, l);
1994 break;
1995 }
1996 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1997 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1998 (p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 4 &&
1999 (os_memcmp(&p[2], "\x50\x6F\x9A\x12", 4) == 0)) ||
2000 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
2001 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
2002 break;
2003 found = 1;
2004 wpa_find_assoc_pmkid(wpa_s);
2005 break;
2006 }
2007 l -= len;
2008 p += len;
2009 }
2010 if (!found && data->assoc_info.req_ies)
2011 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
2012
2013 #ifdef CONFIG_IEEE80211R
2014 #ifdef CONFIG_SME
2015 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
2016 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
2017 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
2018 data->assoc_info.resp_ies,
2019 data->assoc_info.resp_ies_len,
2020 bssid) < 0) {
2021 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
2022 "Reassociation Response failed");
2023 wpa_supplicant_deauthenticate(
2024 wpa_s, WLAN_REASON_INVALID_IE);
2025 return -1;
2026 }
2027 }
2028
2029 p = data->assoc_info.resp_ies;
2030 l = data->assoc_info.resp_ies_len;
2031
2032 #ifdef CONFIG_WPS_STRICT
2033 if (p && wpa_s->current_ssid &&
2034 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
2035 struct wpabuf *wps;
2036 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
2037 if (wps == NULL) {
2038 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
2039 "include WPS IE in (Re)Association Response");
2040 return -1;
2041 }
2042
2043 if (wps_validate_assoc_resp(wps) < 0) {
2044 wpabuf_free(wps);
2045 wpa_supplicant_deauthenticate(
2046 wpa_s, WLAN_REASON_INVALID_IE);
2047 return -1;
2048 }
2049 wpabuf_free(wps);
2050 }
2051 #endif /* CONFIG_WPS_STRICT */
2052
2053 /* Go through the IEs and make a copy of the MDIE, if present. */
2054 while (p && l >= 2) {
2055 len = p[1] + 2;
2056 if (len > l) {
2057 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
2058 p, l);
2059 break;
2060 }
2061 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
2062 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
2063 wpa_s->sme.ft_used = 1;
2064 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
2065 MOBILITY_DOMAIN_ID_LEN);
2066 break;
2067 }
2068 l -= len;
2069 p += len;
2070 }
2071 #endif /* CONFIG_SME */
2072
2073 /* Process FT when SME is in the driver */
2074 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
2075 wpa_ft_is_completed(wpa_s->wpa)) {
2076 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
2077 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
2078 data->assoc_info.resp_ies,
2079 data->assoc_info.resp_ies_len,
2080 bssid) < 0) {
2081 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
2082 "Reassociation Response failed");
2083 wpa_supplicant_deauthenticate(
2084 wpa_s, WLAN_REASON_INVALID_IE);
2085 return -1;
2086 }
2087 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
2088 }
2089
2090 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
2091 data->assoc_info.resp_ies_len);
2092 #endif /* CONFIG_IEEE80211R */
2093
2094 /* WPA/RSN IE from Beacon/ProbeResp */
2095 p = data->assoc_info.beacon_ies;
2096 l = data->assoc_info.beacon_ies_len;
2097
2098 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
2099 */
2100 wpa_found = rsn_found = 0;
2101 while (p && l >= 2) {
2102 len = p[1] + 2;
2103 if (len > l) {
2104 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
2105 p, l);
2106 break;
2107 }
2108 if (!wpa_found &&
2109 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
2110 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
2111 wpa_found = 1;
2112 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
2113 }
2114
2115 if (!rsn_found &&
2116 p[0] == WLAN_EID_RSN && p[1] >= 2) {
2117 rsn_found = 1;
2118 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
2119 }
2120
2121 l -= len;
2122 p += len;
2123 }
2124
2125 if (!wpa_found && data->assoc_info.beacon_ies)
2126 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
2127 if (!rsn_found && data->assoc_info.beacon_ies)
2128 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
2129 if (wpa_found || rsn_found)
2130 wpa_s->ap_ies_from_associnfo = 1;
2131
2132 if (wpa_s->assoc_freq && data->assoc_info.freq &&
2133 wpa_s->assoc_freq != data->assoc_info.freq) {
2134 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
2135 "%u to %u MHz",
2136 wpa_s->assoc_freq, data->assoc_info.freq);
2137 wpa_supplicant_update_scan_results(wpa_s);
2138 }
2139
2140 wpa_s->assoc_freq = data->assoc_info.freq;
2141
2142 return 0;
2143 }
2144
2145
wpa_supplicant_assoc_update_ie(struct wpa_supplicant * wpa_s)2146 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
2147 {
2148 const u8 *bss_wpa = NULL, *bss_rsn = NULL;
2149
2150 if (!wpa_s->current_bss || !wpa_s->current_ssid)
2151 return -1;
2152
2153 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
2154 return 0;
2155
2156 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
2157 WPA_IE_VENDOR_TYPE);
2158 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
2159
2160 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
2161 bss_wpa ? 2 + bss_wpa[1] : 0) ||
2162 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
2163 bss_rsn ? 2 + bss_rsn[1] : 0))
2164 return -1;
2165
2166 return 0;
2167 }
2168
2169
wpas_fst_update_mb_assoc(struct wpa_supplicant * wpa_s,union wpa_event_data * data)2170 static void wpas_fst_update_mb_assoc(struct wpa_supplicant *wpa_s,
2171 union wpa_event_data *data)
2172 {
2173 #ifdef CONFIG_FST
2174 struct assoc_info *ai = data ? &data->assoc_info : NULL;
2175 struct wpa_bss *bss = wpa_s->current_bss;
2176 const u8 *ieprb, *iebcn;
2177
2178 wpabuf_free(wpa_s->received_mb_ies);
2179 wpa_s->received_mb_ies = NULL;
2180
2181 if (ai &&
2182 !wpas_fst_update_mbie(wpa_s, ai->resp_ies, ai->resp_ies_len)) {
2183 wpa_printf(MSG_DEBUG,
2184 "FST: MB IEs updated from Association Response frame");
2185 return;
2186 }
2187
2188 if (ai &&
2189 !wpas_fst_update_mbie(wpa_s, ai->beacon_ies, ai->beacon_ies_len)) {
2190 wpa_printf(MSG_DEBUG,
2191 "FST: MB IEs updated from association event Beacon IEs");
2192 return;
2193 }
2194
2195 if (!bss)
2196 return;
2197
2198 ieprb = (const u8 *) (bss + 1);
2199 iebcn = ieprb + bss->ie_len;
2200
2201 if (!wpas_fst_update_mbie(wpa_s, ieprb, bss->ie_len))
2202 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss IE");
2203 else if (!wpas_fst_update_mbie(wpa_s, iebcn, bss->beacon_ie_len))
2204 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss beacon IE");
2205 #endif /* CONFIG_FST */
2206 }
2207
2208
wpa_supplicant_event_assoc(struct wpa_supplicant * wpa_s,union wpa_event_data * data)2209 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
2210 union wpa_event_data *data)
2211 {
2212 u8 bssid[ETH_ALEN];
2213 int ft_completed;
2214 int new_bss = 0;
2215
2216 #ifdef CONFIG_AP
2217 if (wpa_s->ap_iface) {
2218 if (!data)
2219 return;
2220 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
2221 data->assoc_info.addr,
2222 data->assoc_info.req_ies,
2223 data->assoc_info.req_ies_len,
2224 data->assoc_info.reassoc);
2225 return;
2226 }
2227 #endif /* CONFIG_AP */
2228
2229 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
2230
2231 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
2232 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
2233 return;
2234
2235 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
2236 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
2237 wpa_supplicant_deauthenticate(
2238 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2239 return;
2240 }
2241
2242 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
2243 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
2244 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
2245 MACSTR, MAC2STR(bssid));
2246 new_bss = 1;
2247 random_add_randomness(bssid, ETH_ALEN);
2248 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
2249 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2250 wpas_notify_bssid_changed(wpa_s);
2251
2252 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
2253 wpa_clear_keys(wpa_s, bssid);
2254 }
2255 if (wpa_supplicant_select_config(wpa_s) < 0) {
2256 wpa_supplicant_deauthenticate(
2257 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2258 return;
2259 }
2260 }
2261
2262 #ifdef ANDROID
2263 if (wpa_s->conf->ap_scan == 1) {
2264 #else
2265 if (wpa_s->conf->ap_scan == 1 &&
2266 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
2267 #endif
2268 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0 && new_bss)
2269 wpa_msg(wpa_s, MSG_WARNING,
2270 "WPA/RSN IEs not updated");
2271 }
2272
2273 wpas_fst_update_mb_assoc(wpa_s, data);
2274
2275 #ifdef CONFIG_SME
2276 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
2277 wpa_s->sme.prev_bssid_set = 1;
2278 wpa_s->sme.last_unprot_disconnect.sec = 0;
2279 #endif /* CONFIG_SME */
2280
2281 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
2282 if (wpa_s->current_ssid) {
2283 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
2284 * initialized before association, but for other modes,
2285 * initialize PC/SC here, if the current configuration needs
2286 * smartcard or SIM/USIM. */
2287 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
2288 }
2289 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
2290 if (wpa_s->l2)
2291 l2_packet_notify_auth_start(wpa_s->l2);
2292
2293 /*
2294 * Set portEnabled first to FALSE in order to get EAP state machine out
2295 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2296 * state machine may transit to AUTHENTICATING state based on obsolete
2297 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2298 * AUTHENTICATED without ever giving chance to EAP state machine to
2299 * reset the state.
2300 */
2301 if (!ft_completed) {
2302 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2303 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2304 }
2305 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2306 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2307 /* 802.1X::portControl = Auto */
2308 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2309 wpa_s->eapol_received = 0;
2310 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2311 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2312 (wpa_s->current_ssid &&
2313 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2314 if (wpa_s->current_ssid &&
2315 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2316 (wpa_s->drv_flags &
2317 WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2318 /*
2319 * Set the key after having received joined-IBSS event
2320 * from the driver.
2321 */
2322 wpa_supplicant_set_wpa_none_key(wpa_s,
2323 wpa_s->current_ssid);
2324 }
2325 wpa_supplicant_cancel_auth_timeout(wpa_s);
2326 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2327 } else if (!ft_completed) {
2328 /* Timeout for receiving the first EAPOL packet */
2329 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2330 }
2331 wpa_supplicant_cancel_scan(wpa_s);
2332
2333 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2334 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2335 /*
2336 * We are done; the driver will take care of RSN 4-way
2337 * handshake.
2338 */
2339 wpa_supplicant_cancel_auth_timeout(wpa_s);
2340 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2341 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2342 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2343 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2344 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2345 /*
2346 * The driver will take care of RSN 4-way handshake, so we need
2347 * to allow EAPOL supplicant to complete its work without
2348 * waiting for WPA supplicant.
2349 */
2350 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2351 } else if (ft_completed) {
2352 /*
2353 * FT protocol completed - make sure EAPOL state machine ends
2354 * up in authenticated.
2355 */
2356 wpa_supplicant_cancel_auth_timeout(wpa_s);
2357 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2358 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2359 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2360 }
2361
2362 wpa_s->last_eapol_matches_bssid = 0;
2363
2364 if (wpa_s->pending_eapol_rx) {
2365 struct os_reltime now, age;
2366 os_get_reltime(&now);
2367 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2368 if (age.sec == 0 && age.usec < 100000 &&
2369 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2370 0) {
2371 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2372 "frame that was received just before "
2373 "association notification");
2374 wpa_supplicant_rx_eapol(
2375 wpa_s, wpa_s->pending_eapol_rx_src,
2376 wpabuf_head(wpa_s->pending_eapol_rx),
2377 wpabuf_len(wpa_s->pending_eapol_rx));
2378 }
2379 wpabuf_free(wpa_s->pending_eapol_rx);
2380 wpa_s->pending_eapol_rx = NULL;
2381 }
2382
2383 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2384 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2385 wpa_s->current_ssid &&
2386 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2387 /* Set static WEP keys again */
2388 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2389 }
2390
2391 #ifdef CONFIG_IBSS_RSN
2392 if (wpa_s->current_ssid &&
2393 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2394 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2395 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2396 wpa_s->ibss_rsn == NULL) {
2397 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2398 if (!wpa_s->ibss_rsn) {
2399 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2400 wpa_supplicant_deauthenticate(
2401 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2402 return;
2403 }
2404
2405 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2406 }
2407 #endif /* CONFIG_IBSS_RSN */
2408
2409 wpas_wps_notify_assoc(wpa_s, bssid);
2410
2411 if (data) {
2412 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2413 data->assoc_info.resp_ies_len,
2414 &data->assoc_info.wmm_params);
2415
2416 if (wpa_s->reassoc_same_bss)
2417 wmm_ac_restore_tspecs(wpa_s);
2418 }
2419 }
2420
2421
2422 static int disconnect_reason_recoverable(u16 reason_code)
2423 {
2424 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2425 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2426 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2427 }
2428
2429
2430 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2431 u16 reason_code,
2432 int locally_generated)
2433 {
2434 const u8 *bssid;
2435
2436 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2437 /*
2438 * At least Host AP driver and a Prism3 card seemed to be
2439 * generating streams of disconnected events when configuring
2440 * IBSS for WPA-None. Ignore them for now.
2441 */
2442 return;
2443 }
2444
2445 bssid = wpa_s->bssid;
2446 if (is_zero_ether_addr(bssid))
2447 bssid = wpa_s->pending_bssid;
2448
2449 if (!is_zero_ether_addr(bssid) ||
2450 wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2451 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2452 " reason=%d%s",
2453 MAC2STR(bssid), reason_code,
2454 locally_generated ? " locally_generated=1" : "");
2455 }
2456 }
2457
2458
2459 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2460 int locally_generated)
2461 {
2462 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2463 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2464 return 0; /* Not in 4-way handshake with PSK */
2465
2466 /*
2467 * It looks like connection was lost while trying to go through PSK
2468 * 4-way handshake. Filter out known disconnection cases that are caused
2469 * by something else than PSK mismatch to avoid confusing reports.
2470 */
2471
2472 if (locally_generated) {
2473 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2474 return 0;
2475 }
2476
2477 return 1;
2478 }
2479
2480
2481 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2482 u16 reason_code,
2483 int locally_generated)
2484 {
2485 const u8 *bssid;
2486 int authenticating;
2487 u8 prev_pending_bssid[ETH_ALEN];
2488 struct wpa_bss *fast_reconnect = NULL;
2489 struct wpa_ssid *fast_reconnect_ssid = NULL;
2490 struct wpa_ssid *last_ssid;
2491
2492 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2493 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2494
2495 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2496 /*
2497 * At least Host AP driver and a Prism3 card seemed to be
2498 * generating streams of disconnected events when configuring
2499 * IBSS for WPA-None. Ignore them for now.
2500 */
2501 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2502 "IBSS/WPA-None mode");
2503 return;
2504 }
2505
2506 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2507 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2508 "pre-shared key may be incorrect");
2509 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2510 return; /* P2P group removed */
2511 wpas_auth_failed(wpa_s, "WRONG_KEY");
2512 }
2513 if (!wpa_s->disconnected &&
2514 (!wpa_s->auto_reconnect_disabled ||
2515 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2516 wpas_wps_searching(wpa_s) ||
2517 wpas_wps_reenable_networks_pending(wpa_s))) {
2518 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2519 "reconnect (wps=%d/%d wpa_state=%d)",
2520 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2521 wpas_wps_searching(wpa_s),
2522 wpa_s->wpa_state);
2523 if (wpa_s->wpa_state == WPA_COMPLETED &&
2524 wpa_s->current_ssid &&
2525 wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2526 !locally_generated &&
2527 disconnect_reason_recoverable(reason_code)) {
2528 /*
2529 * It looks like the AP has dropped association with
2530 * us, but could allow us to get back in. Try to
2531 * reconnect to the same BSS without full scan to save
2532 * time for some common cases.
2533 */
2534 fast_reconnect = wpa_s->current_bss;
2535 fast_reconnect_ssid = wpa_s->current_ssid;
2536 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2537 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2538 else
2539 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2540 "immediate scan");
2541 } else {
2542 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2543 "try to re-connect");
2544 wpa_s->reassociate = 0;
2545 wpa_s->disconnected = 1;
2546 if (!wpa_s->pno)
2547 wpa_supplicant_cancel_sched_scan(wpa_s);
2548 }
2549 bssid = wpa_s->bssid;
2550 if (is_zero_ether_addr(bssid))
2551 bssid = wpa_s->pending_bssid;
2552 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2553 wpas_connection_failed(wpa_s, bssid);
2554 wpa_sm_notify_disassoc(wpa_s->wpa);
2555 if (locally_generated)
2556 wpa_s->disconnect_reason = -reason_code;
2557 else
2558 wpa_s->disconnect_reason = reason_code;
2559 wpas_notify_disconnect_reason(wpa_s);
2560 if (wpa_supplicant_dynamic_keys(wpa_s)) {
2561 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2562 wpa_clear_keys(wpa_s, wpa_s->bssid);
2563 }
2564 last_ssid = wpa_s->current_ssid;
2565 wpa_supplicant_mark_disassoc(wpa_s);
2566
2567 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2568 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2569 wpa_s->current_ssid = last_ssid;
2570 }
2571
2572 if (fast_reconnect &&
2573 !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2574 !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2575 !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2576 fast_reconnect->ssid_len) &&
2577 !wpas_temp_disabled(wpa_s, fast_reconnect_ssid) &&
2578 !wpa_is_bss_tmp_disallowed(wpa_s, fast_reconnect->bssid)) {
2579 #ifndef CONFIG_NO_SCAN_PROCESSING
2580 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2581 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2582 fast_reconnect_ssid) < 0) {
2583 /* Recover through full scan */
2584 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2585 }
2586 #endif /* CONFIG_NO_SCAN_PROCESSING */
2587 } else if (fast_reconnect) {
2588 /*
2589 * Could not reconnect to the same BSS due to network being
2590 * disabled. Use a new scan to match the alternative behavior
2591 * above, i.e., to continue automatic reconnection attempt in a
2592 * way that enforces disabled network rules.
2593 */
2594 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2595 }
2596 }
2597
2598
2599 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2600 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2601 {
2602 struct wpa_supplicant *wpa_s = eloop_ctx;
2603
2604 if (!wpa_s->pending_mic_error_report)
2605 return;
2606
2607 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2608 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2609 wpa_s->pending_mic_error_report = 0;
2610 }
2611 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2612
2613
2614 static void
2615 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2616 union wpa_event_data *data)
2617 {
2618 int pairwise;
2619 struct os_reltime t;
2620
2621 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2622 pairwise = (data && data->michael_mic_failure.unicast);
2623 os_get_reltime(&t);
2624 if ((wpa_s->last_michael_mic_error.sec &&
2625 !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2626 wpa_s->pending_mic_error_report) {
2627 if (wpa_s->pending_mic_error_report) {
2628 /*
2629 * Send the pending MIC error report immediately since
2630 * we are going to start countermeasures and AP better
2631 * do the same.
2632 */
2633 wpa_sm_key_request(wpa_s->wpa, 1,
2634 wpa_s->pending_mic_error_pairwise);
2635 }
2636
2637 /* Send the new MIC error report immediately since we are going
2638 * to start countermeasures and AP better do the same.
2639 */
2640 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2641
2642 /* initialize countermeasures */
2643 wpa_s->countermeasures = 1;
2644
2645 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2646
2647 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2648
2649 /*
2650 * Need to wait for completion of request frame. We do not get
2651 * any callback for the message completion, so just wait a
2652 * short while and hope for the best. */
2653 os_sleep(0, 10000);
2654
2655 wpa_drv_set_countermeasures(wpa_s, 1);
2656 wpa_supplicant_deauthenticate(wpa_s,
2657 WLAN_REASON_MICHAEL_MIC_FAILURE);
2658 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2659 wpa_s, NULL);
2660 eloop_register_timeout(60, 0,
2661 wpa_supplicant_stop_countermeasures,
2662 wpa_s, NULL);
2663 /* TODO: mark the AP rejected for 60 second. STA is
2664 * allowed to associate with another AP.. */
2665 } else {
2666 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2667 if (wpa_s->mic_errors_seen) {
2668 /*
2669 * Reduce the effectiveness of Michael MIC error
2670 * reports as a means for attacking against TKIP if
2671 * more than one MIC failure is noticed with the same
2672 * PTK. We delay the transmission of the reports by a
2673 * random time between 0 and 60 seconds in order to
2674 * force the attacker wait 60 seconds before getting
2675 * the information on whether a frame resulted in a MIC
2676 * failure.
2677 */
2678 u8 rval[4];
2679 int sec;
2680
2681 if (os_get_random(rval, sizeof(rval)) < 0)
2682 sec = os_random() % 60;
2683 else
2684 sec = WPA_GET_BE32(rval) % 60;
2685 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2686 "report %d seconds", sec);
2687 wpa_s->pending_mic_error_report = 1;
2688 wpa_s->pending_mic_error_pairwise = pairwise;
2689 eloop_cancel_timeout(
2690 wpa_supplicant_delayed_mic_error_report,
2691 wpa_s, NULL);
2692 eloop_register_timeout(
2693 sec, os_random() % 1000000,
2694 wpa_supplicant_delayed_mic_error_report,
2695 wpa_s, NULL);
2696 } else {
2697 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2698 }
2699 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2700 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2701 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2702 }
2703 wpa_s->last_michael_mic_error = t;
2704 wpa_s->mic_errors_seen++;
2705 }
2706
2707
2708 #ifdef CONFIG_TERMINATE_ONLASTIF
2709 static int any_interfaces(struct wpa_supplicant *head)
2710 {
2711 struct wpa_supplicant *wpa_s;
2712
2713 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2714 if (!wpa_s->interface_removed)
2715 return 1;
2716 return 0;
2717 }
2718 #endif /* CONFIG_TERMINATE_ONLASTIF */
2719
2720
2721 static void
2722 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2723 union wpa_event_data *data)
2724 {
2725 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2726 return;
2727
2728 switch (data->interface_status.ievent) {
2729 case EVENT_INTERFACE_ADDED:
2730 if (!wpa_s->interface_removed)
2731 break;
2732 wpa_s->interface_removed = 0;
2733 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2734 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2735 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2736 "driver after interface was added");
2737 }
2738
2739 #ifdef CONFIG_P2P
2740 if (!wpa_s->global->p2p &&
2741 !wpa_s->global->p2p_disabled &&
2742 !wpa_s->conf->p2p_disabled &&
2743 (wpa_s->drv_flags &
2744 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
2745 wpas_p2p_add_p2pdev_interface(
2746 wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) {
2747 wpa_printf(MSG_INFO,
2748 "P2P: Failed to enable P2P Device interface");
2749 /* Try to continue without. P2P will be disabled. */
2750 }
2751 #endif /* CONFIG_P2P */
2752
2753 break;
2754 case EVENT_INTERFACE_REMOVED:
2755 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2756 wpa_s->interface_removed = 1;
2757 wpa_supplicant_mark_disassoc(wpa_s);
2758 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2759 l2_packet_deinit(wpa_s->l2);
2760 wpa_s->l2 = NULL;
2761
2762 #ifdef CONFIG_P2P
2763 if (wpa_s->global->p2p &&
2764 wpa_s->global->p2p_init_wpa_s->parent == wpa_s &&
2765 (wpa_s->drv_flags &
2766 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) {
2767 wpa_dbg(wpa_s, MSG_DEBUG,
2768 "Removing P2P Device interface");
2769 wpa_supplicant_remove_iface(
2770 wpa_s->global, wpa_s->global->p2p_init_wpa_s,
2771 0);
2772 wpa_s->global->p2p_init_wpa_s = NULL;
2773 }
2774 #endif /* CONFIG_P2P */
2775
2776 #ifdef CONFIG_MATCH_IFACE
2777 if (wpa_s->matched) {
2778 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
2779 break;
2780 }
2781 #endif /* CONFIG_MATCH_IFACE */
2782
2783 #ifdef CONFIG_TERMINATE_ONLASTIF
2784 /* check if last interface */
2785 if (!any_interfaces(wpa_s->global->ifaces))
2786 eloop_terminate();
2787 #endif /* CONFIG_TERMINATE_ONLASTIF */
2788 break;
2789 }
2790 }
2791
2792
2793 #ifdef CONFIG_PEERKEY
2794 static void
2795 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2796 union wpa_event_data *data)
2797 {
2798 if (data == NULL)
2799 return;
2800 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2801 }
2802 #endif /* CONFIG_PEERKEY */
2803
2804
2805 #ifdef CONFIG_TDLS
2806 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2807 union wpa_event_data *data)
2808 {
2809 if (data == NULL)
2810 return;
2811 switch (data->tdls.oper) {
2812 case TDLS_REQUEST_SETUP:
2813 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2814 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2815 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2816 else
2817 wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2818 break;
2819 case TDLS_REQUEST_TEARDOWN:
2820 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2821 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2822 data->tdls.reason_code);
2823 else
2824 wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2825 data->tdls.peer);
2826 break;
2827 case TDLS_REQUEST_DISCOVER:
2828 wpa_tdls_send_discovery_request(wpa_s->wpa,
2829 data->tdls.peer);
2830 break;
2831 }
2832 }
2833 #endif /* CONFIG_TDLS */
2834
2835
2836 #ifdef CONFIG_WNM
2837 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2838 union wpa_event_data *data)
2839 {
2840 if (data == NULL)
2841 return;
2842 switch (data->wnm.oper) {
2843 case WNM_OPER_SLEEP:
2844 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2845 "(action=%d, intval=%d)",
2846 data->wnm.sleep_action, data->wnm.sleep_intval);
2847 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2848 data->wnm.sleep_intval, NULL);
2849 break;
2850 }
2851 }
2852 #endif /* CONFIG_WNM */
2853
2854
2855 #ifdef CONFIG_IEEE80211R
2856 static void
2857 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2858 union wpa_event_data *data)
2859 {
2860 if (data == NULL)
2861 return;
2862
2863 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2864 data->ft_ies.ies_len,
2865 data->ft_ies.ft_action,
2866 data->ft_ies.target_ap,
2867 data->ft_ies.ric_ies,
2868 data->ft_ies.ric_ies_len) < 0) {
2869 /* TODO: prevent MLME/driver from trying to associate? */
2870 }
2871 }
2872 #endif /* CONFIG_IEEE80211R */
2873
2874
2875 #ifdef CONFIG_IBSS_RSN
2876 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2877 union wpa_event_data *data)
2878 {
2879 struct wpa_ssid *ssid;
2880 if (wpa_s->wpa_state < WPA_ASSOCIATED)
2881 return;
2882 if (data == NULL)
2883 return;
2884 ssid = wpa_s->current_ssid;
2885 if (ssid == NULL)
2886 return;
2887 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2888 return;
2889
2890 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2891 }
2892
2893
2894 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2895 union wpa_event_data *data)
2896 {
2897 struct wpa_ssid *ssid = wpa_s->current_ssid;
2898
2899 if (ssid == NULL)
2900 return;
2901
2902 /* check if the ssid is correctly configured as IBSS/RSN */
2903 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2904 return;
2905
2906 ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2907 data->rx_mgmt.frame_len);
2908 }
2909 #endif /* CONFIG_IBSS_RSN */
2910
2911
2912 #ifdef CONFIG_IEEE80211R
2913 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2914 size_t len)
2915 {
2916 const u8 *sta_addr, *target_ap_addr;
2917 u16 status;
2918
2919 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2920 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2921 return; /* only SME case supported for now */
2922 if (len < 1 + 2 * ETH_ALEN + 2)
2923 return;
2924 if (data[0] != 2)
2925 return; /* Only FT Action Response is supported for now */
2926 sta_addr = data + 1;
2927 target_ap_addr = data + 1 + ETH_ALEN;
2928 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2929 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2930 MACSTR " TargetAP " MACSTR " status %u",
2931 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2932
2933 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2934 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2935 " in FT Action Response", MAC2STR(sta_addr));
2936 return;
2937 }
2938
2939 if (status) {
2940 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2941 "failure (status code %d)", status);
2942 /* TODO: report error to FT code(?) */
2943 return;
2944 }
2945
2946 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2947 len - (1 + 2 * ETH_ALEN + 2), 1,
2948 target_ap_addr, NULL, 0) < 0)
2949 return;
2950
2951 #ifdef CONFIG_SME
2952 {
2953 struct wpa_bss *bss;
2954 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2955 if (bss)
2956 wpa_s->sme.freq = bss->freq;
2957 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2958 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2959 WLAN_AUTH_FT);
2960 }
2961 #endif /* CONFIG_SME */
2962 }
2963 #endif /* CONFIG_IEEE80211R */
2964
2965
2966 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2967 struct unprot_deauth *e)
2968 {
2969 #ifdef CONFIG_IEEE80211W
2970 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2971 "dropped: " MACSTR " -> " MACSTR
2972 " (reason code %u)",
2973 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2974 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2975 #endif /* CONFIG_IEEE80211W */
2976 }
2977
2978
2979 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2980 struct unprot_disassoc *e)
2981 {
2982 #ifdef CONFIG_IEEE80211W
2983 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2984 "dropped: " MACSTR " -> " MACSTR
2985 " (reason code %u)",
2986 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2987 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2988 #endif /* CONFIG_IEEE80211W */
2989 }
2990
2991
2992 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2993 u16 reason_code, int locally_generated,
2994 const u8 *ie, size_t ie_len, int deauth)
2995 {
2996 #ifdef CONFIG_AP
2997 if (wpa_s->ap_iface && addr) {
2998 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2999 return;
3000 }
3001
3002 if (wpa_s->ap_iface) {
3003 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
3004 return;
3005 }
3006 #endif /* CONFIG_AP */
3007
3008 if (!locally_generated)
3009 wpa_s->own_disconnect_req = 0;
3010
3011 wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
3012
3013 if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
3014 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
3015 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
3016 eapol_sm_failed(wpa_s->eapol))) &&
3017 !wpa_s->eap_expected_failure))
3018 wpas_auth_failed(wpa_s, "AUTH_FAILED");
3019
3020 #ifdef CONFIG_P2P
3021 if (deauth && reason_code > 0) {
3022 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
3023 locally_generated) > 0) {
3024 /*
3025 * The interface was removed, so cannot continue
3026 * processing any additional operations after this.
3027 */
3028 return;
3029 }
3030 }
3031 #endif /* CONFIG_P2P */
3032
3033 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
3034 locally_generated);
3035 }
3036
3037
3038 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
3039 struct disassoc_info *info)
3040 {
3041 u16 reason_code = 0;
3042 int locally_generated = 0;
3043 const u8 *addr = NULL;
3044 const u8 *ie = NULL;
3045 size_t ie_len = 0;
3046
3047 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
3048
3049 if (info) {
3050 addr = info->addr;
3051 ie = info->ie;
3052 ie_len = info->ie_len;
3053 reason_code = info->reason_code;
3054 locally_generated = info->locally_generated;
3055 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
3056 locally_generated ? " (locally generated)" : "");
3057 if (addr)
3058 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
3059 MAC2STR(addr));
3060 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
3061 ie, ie_len);
3062 }
3063
3064 #ifdef CONFIG_AP
3065 if (wpa_s->ap_iface && info && info->addr) {
3066 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
3067 return;
3068 }
3069
3070 if (wpa_s->ap_iface) {
3071 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
3072 return;
3073 }
3074 #endif /* CONFIG_AP */
3075
3076 #ifdef CONFIG_P2P
3077 if (info) {
3078 wpas_p2p_disassoc_notif(
3079 wpa_s, info->addr, reason_code, info->ie, info->ie_len,
3080 locally_generated);
3081 }
3082 #endif /* CONFIG_P2P */
3083
3084 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3085 sme_event_disassoc(wpa_s, info);
3086
3087 wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
3088 ie, ie_len, 0);
3089 }
3090
3091
3092 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
3093 struct deauth_info *info)
3094 {
3095 u16 reason_code = 0;
3096 int locally_generated = 0;
3097 const u8 *addr = NULL;
3098 const u8 *ie = NULL;
3099 size_t ie_len = 0;
3100
3101 wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
3102
3103 if (info) {
3104 addr = info->addr;
3105 ie = info->ie;
3106 ie_len = info->ie_len;
3107 reason_code = info->reason_code;
3108 locally_generated = info->locally_generated;
3109 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
3110 reason_code,
3111 locally_generated ? " (locally generated)" : "");
3112 if (addr) {
3113 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
3114 MAC2STR(addr));
3115 }
3116 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
3117 ie, ie_len);
3118 }
3119
3120 wpa_reset_ft_completed(wpa_s->wpa);
3121
3122 wpas_event_disconnect(wpa_s, addr, reason_code,
3123 locally_generated, ie, ie_len, 1);
3124 }
3125
3126
3127 static const char * reg_init_str(enum reg_change_initiator init)
3128 {
3129 switch (init) {
3130 case REGDOM_SET_BY_CORE:
3131 return "CORE";
3132 case REGDOM_SET_BY_USER:
3133 return "USER";
3134 case REGDOM_SET_BY_DRIVER:
3135 return "DRIVER";
3136 case REGDOM_SET_BY_COUNTRY_IE:
3137 return "COUNTRY_IE";
3138 case REGDOM_BEACON_HINT:
3139 return "BEACON_HINT";
3140 }
3141 return "?";
3142 }
3143
3144
3145 static const char * reg_type_str(enum reg_type type)
3146 {
3147 switch (type) {
3148 case REGDOM_TYPE_UNKNOWN:
3149 return "UNKNOWN";
3150 case REGDOM_TYPE_COUNTRY:
3151 return "COUNTRY";
3152 case REGDOM_TYPE_WORLD:
3153 return "WORLD";
3154 case REGDOM_TYPE_CUSTOM_WORLD:
3155 return "CUSTOM_WORLD";
3156 case REGDOM_TYPE_INTERSECTION:
3157 return "INTERSECTION";
3158 }
3159 return "?";
3160 }
3161
3162
3163 static void wpa_supplicant_update_channel_list(
3164 struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
3165 {
3166 struct wpa_supplicant *ifs;
3167
3168 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
3169 reg_init_str(info->initiator), reg_type_str(info->type),
3170 info->alpha2[0] ? " alpha2=" : "",
3171 info->alpha2[0] ? info->alpha2 : "");
3172
3173 if (wpa_s->drv_priv == NULL)
3174 return; /* Ignore event during drv initialization */
3175
3176 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
3177 radio_list) {
3178 wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
3179 ifs->ifname);
3180 free_hw_features(ifs);
3181 ifs->hw.modes = wpa_drv_get_hw_feature_data(
3182 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
3183 }
3184
3185 /* Restart sched_scan with updated channel list */
3186 if (wpa_s->sched_scanning) {
3187 wpa_dbg(wpa_s, MSG_DEBUG,
3188 "Channel list changed restart sched scan.");
3189 wpa_supplicant_cancel_sched_scan(wpa_s);
3190 wpa_supplicant_req_scan(wpa_s, 0, 0);
3191 }
3192
3193 wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_DRIVER);
3194 }
3195
3196
3197 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
3198 const u8 *frame, size_t len, int freq,
3199 int rssi)
3200 {
3201 const struct ieee80211_mgmt *mgmt;
3202 const u8 *payload;
3203 size_t plen;
3204 u8 category;
3205
3206 if (len < IEEE80211_HDRLEN + 2)
3207 return;
3208
3209 mgmt = (const struct ieee80211_mgmt *) frame;
3210 payload = frame + IEEE80211_HDRLEN;
3211 category = *payload++;
3212 plen = len - IEEE80211_HDRLEN - 1;
3213
3214 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
3215 " Category=%u DataLen=%d freq=%d MHz",
3216 MAC2STR(mgmt->sa), category, (int) plen, freq);
3217
3218 if (category == WLAN_ACTION_WMM) {
3219 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
3220 return;
3221 }
3222
3223 #ifdef CONFIG_IEEE80211R
3224 if (category == WLAN_ACTION_FT) {
3225 ft_rx_action(wpa_s, payload, plen);
3226 return;
3227 }
3228 #endif /* CONFIG_IEEE80211R */
3229
3230 #ifdef CONFIG_IEEE80211W
3231 #ifdef CONFIG_SME
3232 if (category == WLAN_ACTION_SA_QUERY) {
3233 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
3234 return;
3235 }
3236 #endif /* CONFIG_SME */
3237 #endif /* CONFIG_IEEE80211W */
3238
3239 #ifdef CONFIG_WNM
3240 if (mgmt->u.action.category == WLAN_ACTION_WNM) {
3241 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
3242 return;
3243 }
3244 #endif /* CONFIG_WNM */
3245
3246 #ifdef CONFIG_GAS
3247 if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
3248 mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
3249 gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
3250 mgmt->u.action.category,
3251 payload, plen, freq) == 0)
3252 return;
3253 #endif /* CONFIG_GAS */
3254
3255 #ifdef CONFIG_TDLS
3256 if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
3257 payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
3258 wpa_dbg(wpa_s, MSG_DEBUG,
3259 "TDLS: Received Discovery Response from " MACSTR,
3260 MAC2STR(mgmt->sa));
3261 return;
3262 }
3263 #endif /* CONFIG_TDLS */
3264
3265 #ifdef CONFIG_INTERWORKING
3266 if (category == WLAN_ACTION_QOS && plen >= 1 &&
3267 payload[0] == QOS_QOS_MAP_CONFIG) {
3268 const u8 *pos = payload + 1;
3269 size_t qlen = plen - 1;
3270 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
3271 MACSTR, MAC2STR(mgmt->sa));
3272 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
3273 qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
3274 pos[1] <= qlen - 2 && pos[1] >= 16)
3275 wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
3276 return;
3277 }
3278 #endif /* CONFIG_INTERWORKING */
3279
3280 if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3281 payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
3282 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
3283 return;
3284 }
3285
3286 if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3287 payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
3288 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
3289 payload + 1, plen - 1,
3290 rssi);
3291 return;
3292 }
3293
3294 #ifdef CONFIG_FST
3295 if (mgmt->u.action.category == WLAN_ACTION_FST && wpa_s->fst) {
3296 fst_rx_action(wpa_s->fst, mgmt, len);
3297 return;
3298 }
3299 #endif /* CONFIG_FST */
3300
3301 wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
3302 category, payload, plen, freq);
3303 if (wpa_s->ifmsh)
3304 mesh_mpm_action_rx(wpa_s, mgmt, len);
3305 }
3306
3307
3308 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
3309 union wpa_event_data *event)
3310 {
3311 struct wpa_freq_range_list *list;
3312 char *str = NULL;
3313
3314 list = &event->freq_range;
3315
3316 if (list->num)
3317 str = freq_range_list_str(list);
3318 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
3319 str ? str : "");
3320
3321 #ifdef CONFIG_P2P
3322 if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
3323 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
3324 __func__);
3325 } else {
3326 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
3327
3328 /*
3329 * The update channel flow will also take care of moving a GO
3330 * from the unsafe frequency if needed.
3331 */
3332 wpas_p2p_update_channel_list(wpa_s,
3333 WPAS_P2P_CHANNEL_UPDATE_AVOID);
3334 }
3335 #endif /* CONFIG_P2P */
3336
3337 os_free(str);
3338 }
3339
3340
3341 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3342 union wpa_event_data *data)
3343 {
3344 wpa_dbg(wpa_s, MSG_DEBUG,
3345 "Connection authorized by device, previous state %d",
3346 wpa_s->wpa_state);
3347 if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3348 wpa_supplicant_cancel_auth_timeout(wpa_s);
3349 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3350 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3351 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3352 }
3353 wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3354 wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3355 data->assoc_info.ptk_kck_len,
3356 data->assoc_info.ptk_kek,
3357 data->assoc_info.ptk_kek_len);
3358 }
3359
3360
3361 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3362 union wpa_event_data *data)
3363 {
3364 struct wpa_supplicant *wpa_s = ctx;
3365 int resched;
3366
3367 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3368 event != EVENT_INTERFACE_ENABLED &&
3369 event != EVENT_INTERFACE_STATUS &&
3370 event != EVENT_SCAN_RESULTS &&
3371 event != EVENT_SCHED_SCAN_STOPPED) {
3372 wpa_dbg(wpa_s, MSG_DEBUG,
3373 "Ignore event %s (%d) while interface is disabled",
3374 event_to_string(event), event);
3375 return;
3376 }
3377
3378 #ifndef CONFIG_NO_STDOUT_DEBUG
3379 {
3380 int level = MSG_DEBUG;
3381
3382 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3383 const struct ieee80211_hdr *hdr;
3384 u16 fc;
3385 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3386 fc = le_to_host16(hdr->frame_control);
3387 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3388 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3389 level = MSG_EXCESSIVE;
3390 }
3391
3392 wpa_dbg(wpa_s, level, "Event %s (%d) received",
3393 event_to_string(event), event);
3394 }
3395 #endif /* CONFIG_NO_STDOUT_DEBUG */
3396
3397 switch (event) {
3398 case EVENT_AUTH:
3399 #ifdef CONFIG_FST
3400 if (!wpas_fst_update_mbie(wpa_s, data->auth.ies,
3401 data->auth.ies_len))
3402 wpa_printf(MSG_DEBUG,
3403 "FST: MB IEs updated from auth IE");
3404 #endif /* CONFIG_FST */
3405 sme_event_auth(wpa_s, data);
3406 break;
3407 case EVENT_ASSOC:
3408 wpa_supplicant_event_assoc(wpa_s, data);
3409 if (data && data->assoc_info.authorized)
3410 wpa_supplicant_event_assoc_auth(wpa_s, data);
3411 if (data) {
3412 wpa_msg(wpa_s, MSG_INFO,
3413 WPA_EVENT_SUBNET_STATUS_UPDATE "status=%u",
3414 data->assoc_info.subnet_status);
3415 }
3416 break;
3417 case EVENT_DISASSOC:
3418 wpas_event_disassoc(wpa_s,
3419 data ? &data->disassoc_info : NULL);
3420 break;
3421 case EVENT_DEAUTH:
3422 wpas_event_deauth(wpa_s,
3423 data ? &data->deauth_info : NULL);
3424 break;
3425 case EVENT_MICHAEL_MIC_FAILURE:
3426 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3427 break;
3428 #ifndef CONFIG_NO_SCAN_PROCESSING
3429 case EVENT_SCAN_STARTED:
3430 if (wpa_s->own_scan_requested ||
3431 (data && !data->scan_info.external_scan)) {
3432 struct os_reltime diff;
3433
3434 os_get_reltime(&wpa_s->scan_start_time);
3435 os_reltime_sub(&wpa_s->scan_start_time,
3436 &wpa_s->scan_trigger_time, &diff);
3437 wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3438 diff.sec, diff.usec);
3439 wpa_s->own_scan_requested = 0;
3440 wpa_s->own_scan_running = 1;
3441 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3442 wpa_s->manual_scan_use_id) {
3443 wpa_msg_ctrl(wpa_s, MSG_INFO,
3444 WPA_EVENT_SCAN_STARTED "id=%u",
3445 wpa_s->manual_scan_id);
3446 } else {
3447 wpa_msg_ctrl(wpa_s, MSG_INFO,
3448 WPA_EVENT_SCAN_STARTED);
3449 }
3450 } else {
3451 wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3452 wpa_s->radio->external_scan_running = 1;
3453 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3454 }
3455 break;
3456 case EVENT_SCAN_RESULTS:
3457 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3458 wpa_s->scan_res_handler = NULL;
3459 wpa_s->own_scan_running = 0;
3460 wpa_s->radio->external_scan_running = 0;
3461 wpa_s->last_scan_req = NORMAL_SCAN_REQ;
3462 break;
3463 }
3464
3465 if (!(data && data->scan_info.external_scan) &&
3466 os_reltime_initialized(&wpa_s->scan_start_time)) {
3467 struct os_reltime now, diff;
3468 os_get_reltime(&now);
3469 os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3470 wpa_s->scan_start_time.sec = 0;
3471 wpa_s->scan_start_time.usec = 0;
3472 wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3473 diff.sec, diff.usec);
3474 }
3475 if (wpa_supplicant_event_scan_results(wpa_s, data))
3476 break; /* interface may have been removed */
3477 if (!(data && data->scan_info.external_scan))
3478 wpa_s->own_scan_running = 0;
3479 if (data && data->scan_info.nl_scan_event)
3480 wpa_s->radio->external_scan_running = 0;
3481 radio_work_check_next(wpa_s);
3482 break;
3483 #endif /* CONFIG_NO_SCAN_PROCESSING */
3484 case EVENT_ASSOCINFO:
3485 wpa_supplicant_event_associnfo(wpa_s, data);
3486 break;
3487 case EVENT_INTERFACE_STATUS:
3488 wpa_supplicant_event_interface_status(wpa_s, data);
3489 break;
3490 case EVENT_PMKID_CANDIDATE:
3491 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3492 break;
3493 #ifdef CONFIG_PEERKEY
3494 case EVENT_STKSTART:
3495 wpa_supplicant_event_stkstart(wpa_s, data);
3496 break;
3497 #endif /* CONFIG_PEERKEY */
3498 #ifdef CONFIG_TDLS
3499 case EVENT_TDLS:
3500 wpa_supplicant_event_tdls(wpa_s, data);
3501 break;
3502 #endif /* CONFIG_TDLS */
3503 #ifdef CONFIG_WNM
3504 case EVENT_WNM:
3505 wpa_supplicant_event_wnm(wpa_s, data);
3506 break;
3507 #endif /* CONFIG_WNM */
3508 #ifdef CONFIG_IEEE80211R
3509 case EVENT_FT_RESPONSE:
3510 wpa_supplicant_event_ft_response(wpa_s, data);
3511 break;
3512 #endif /* CONFIG_IEEE80211R */
3513 #ifdef CONFIG_IBSS_RSN
3514 case EVENT_IBSS_RSN_START:
3515 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3516 break;
3517 #endif /* CONFIG_IBSS_RSN */
3518 case EVENT_ASSOC_REJECT:
3519 if (data->assoc_reject.bssid)
3520 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3521 "bssid=" MACSTR " status_code=%u",
3522 MAC2STR(data->assoc_reject.bssid),
3523 data->assoc_reject.status_code);
3524 else
3525 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3526 "status_code=%u",
3527 data->assoc_reject.status_code);
3528 wpa_s->assoc_status_code = data->assoc_reject.status_code;
3529 wpas_notify_assoc_status_code(wpa_s);
3530 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3531 sme_event_assoc_reject(wpa_s, data);
3532 else {
3533 const u8 *bssid = data->assoc_reject.bssid;
3534 if (bssid == NULL || is_zero_ether_addr(bssid))
3535 bssid = wpa_s->pending_bssid;
3536 wpas_connection_failed(wpa_s, bssid);
3537 wpa_supplicant_mark_disassoc(wpa_s);
3538 }
3539 break;
3540 case EVENT_AUTH_TIMED_OUT:
3541 /* It is possible to get this event from earlier connection */
3542 if (wpa_s->current_ssid &&
3543 wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3544 wpa_dbg(wpa_s, MSG_DEBUG,
3545 "Ignore AUTH_TIMED_OUT in mesh configuration");
3546 break;
3547 }
3548 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3549 sme_event_auth_timed_out(wpa_s, data);
3550 break;
3551 case EVENT_ASSOC_TIMED_OUT:
3552 /* It is possible to get this event from earlier connection */
3553 if (wpa_s->current_ssid &&
3554 wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3555 wpa_dbg(wpa_s, MSG_DEBUG,
3556 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3557 break;
3558 }
3559 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3560 sme_event_assoc_timed_out(wpa_s, data);
3561 break;
3562 case EVENT_TX_STATUS:
3563 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3564 " type=%d stype=%d",
3565 MAC2STR(data->tx_status.dst),
3566 data->tx_status.type, data->tx_status.stype);
3567 #ifdef CONFIG_AP
3568 if (wpa_s->ap_iface == NULL) {
3569 #ifdef CONFIG_OFFCHANNEL
3570 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3571 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3572 offchannel_send_action_tx_status(
3573 wpa_s, data->tx_status.dst,
3574 data->tx_status.data,
3575 data->tx_status.data_len,
3576 data->tx_status.ack ?
3577 OFFCHANNEL_SEND_ACTION_SUCCESS :
3578 OFFCHANNEL_SEND_ACTION_NO_ACK);
3579 #endif /* CONFIG_OFFCHANNEL */
3580 break;
3581 }
3582 #endif /* CONFIG_AP */
3583 #ifdef CONFIG_OFFCHANNEL
3584 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3585 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3586 /*
3587 * Catch TX status events for Action frames we sent via group
3588 * interface in GO mode.
3589 */
3590 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3591 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3592 os_memcmp(wpa_s->parent->pending_action_dst,
3593 data->tx_status.dst, ETH_ALEN) == 0) {
3594 offchannel_send_action_tx_status(
3595 wpa_s->parent, data->tx_status.dst,
3596 data->tx_status.data,
3597 data->tx_status.data_len,
3598 data->tx_status.ack ?
3599 OFFCHANNEL_SEND_ACTION_SUCCESS :
3600 OFFCHANNEL_SEND_ACTION_NO_ACK);
3601 break;
3602 }
3603 #endif /* CONFIG_OFFCHANNEL */
3604 #ifdef CONFIG_AP
3605 switch (data->tx_status.type) {
3606 case WLAN_FC_TYPE_MGMT:
3607 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3608 data->tx_status.data_len,
3609 data->tx_status.stype,
3610 data->tx_status.ack);
3611 break;
3612 case WLAN_FC_TYPE_DATA:
3613 ap_tx_status(wpa_s, data->tx_status.dst,
3614 data->tx_status.data,
3615 data->tx_status.data_len,
3616 data->tx_status.ack);
3617 break;
3618 }
3619 #endif /* CONFIG_AP */
3620 break;
3621 #ifdef CONFIG_AP
3622 case EVENT_EAPOL_TX_STATUS:
3623 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3624 data->eapol_tx_status.data,
3625 data->eapol_tx_status.data_len,
3626 data->eapol_tx_status.ack);
3627 break;
3628 case EVENT_DRIVER_CLIENT_POLL_OK:
3629 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3630 break;
3631 case EVENT_RX_FROM_UNKNOWN:
3632 if (wpa_s->ap_iface == NULL)
3633 break;
3634 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3635 data->rx_from_unknown.wds);
3636 break;
3637 case EVENT_CH_SWITCH:
3638 if (!data || !wpa_s->current_ssid)
3639 break;
3640
3641 wpa_s->assoc_freq = data->ch_switch.freq;
3642 wpa_s->current_ssid->frequency = data->ch_switch.freq;
3643
3644 if (wpa_s->current_ssid->mode == WPAS_MODE_AP ||
3645 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO ||
3646 wpa_s->current_ssid->mode ==
3647 WPAS_MODE_P2P_GROUP_FORMATION) {
3648 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3649 data->ch_switch.ht_enabled,
3650 data->ch_switch.ch_offset,
3651 data->ch_switch.ch_width,
3652 data->ch_switch.cf1,
3653 data->ch_switch.cf2);
3654 }
3655
3656 wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_CS);
3657 break;
3658 #ifdef NEED_AP_MLME
3659 case EVENT_DFS_RADAR_DETECTED:
3660 if (data)
3661 wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
3662 break;
3663 case EVENT_DFS_CAC_STARTED:
3664 if (data)
3665 wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
3666 break;
3667 case EVENT_DFS_CAC_FINISHED:
3668 if (data)
3669 wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
3670 break;
3671 case EVENT_DFS_CAC_ABORTED:
3672 if (data)
3673 wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
3674 break;
3675 case EVENT_DFS_NOP_FINISHED:
3676 if (data)
3677 wpas_event_dfs_cac_nop_finished(wpa_s,
3678 &data->dfs_event);
3679 break;
3680 #endif /* NEED_AP_MLME */
3681 #endif /* CONFIG_AP */
3682 case EVENT_RX_MGMT: {
3683 u16 fc, stype;
3684 const struct ieee80211_mgmt *mgmt;
3685
3686 #ifdef CONFIG_TESTING_OPTIONS
3687 if (wpa_s->ext_mgmt_frame_handling) {
3688 struct rx_mgmt *rx = &data->rx_mgmt;
3689 size_t hex_len = 2 * rx->frame_len + 1;
3690 char *hex = os_malloc(hex_len);
3691 if (hex) {
3692 wpa_snprintf_hex(hex, hex_len,
3693 rx->frame, rx->frame_len);
3694 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3695 rx->freq, rx->datarate, rx->ssi_signal,
3696 hex);
3697 os_free(hex);
3698 }
3699 break;
3700 }
3701 #endif /* CONFIG_TESTING_OPTIONS */
3702
3703 mgmt = (const struct ieee80211_mgmt *)
3704 data->rx_mgmt.frame;
3705 fc = le_to_host16(mgmt->frame_control);
3706 stype = WLAN_FC_GET_STYPE(fc);
3707
3708 #ifdef CONFIG_AP
3709 if (wpa_s->ap_iface == NULL) {
3710 #endif /* CONFIG_AP */
3711 #ifdef CONFIG_P2P
3712 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3713 data->rx_mgmt.frame_len > IEEE80211_HDRLEN) {
3714 const u8 *src = mgmt->sa;
3715 const u8 *ie;
3716 size_t ie_len;
3717
3718 ie = data->rx_mgmt.frame + IEEE80211_HDRLEN;
3719 ie_len = data->rx_mgmt.frame_len -
3720 IEEE80211_HDRLEN;
3721 wpas_p2p_probe_req_rx(
3722 wpa_s, src, mgmt->da,
3723 mgmt->bssid, ie, ie_len,
3724 data->rx_mgmt.freq,
3725 data->rx_mgmt.ssi_signal);
3726 break;
3727 }
3728 #endif /* CONFIG_P2P */
3729 #ifdef CONFIG_IBSS_RSN
3730 if (wpa_s->current_ssid &&
3731 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3732 stype == WLAN_FC_STYPE_AUTH &&
3733 data->rx_mgmt.frame_len >= 30) {
3734 wpa_supplicant_event_ibss_auth(wpa_s, data);
3735 break;
3736 }
3737 #endif /* CONFIG_IBSS_RSN */
3738
3739 if (stype == WLAN_FC_STYPE_ACTION) {
3740 wpas_event_rx_mgmt_action(
3741 wpa_s, data->rx_mgmt.frame,
3742 data->rx_mgmt.frame_len,
3743 data->rx_mgmt.freq,
3744 data->rx_mgmt.ssi_signal);
3745 break;
3746 }
3747
3748 if (wpa_s->ifmsh) {
3749 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3750 break;
3751 }
3752
3753 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3754 "management frame in non-AP mode");
3755 break;
3756 #ifdef CONFIG_AP
3757 }
3758
3759 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3760 data->rx_mgmt.frame_len > IEEE80211_HDRLEN) {
3761 const u8 *ie;
3762 size_t ie_len;
3763
3764 ie = data->rx_mgmt.frame + IEEE80211_HDRLEN;
3765 ie_len = data->rx_mgmt.frame_len - IEEE80211_HDRLEN;
3766
3767 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3768 mgmt->bssid, ie, ie_len,
3769 data->rx_mgmt.ssi_signal);
3770 }
3771
3772 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3773 #endif /* CONFIG_AP */
3774 break;
3775 }
3776 case EVENT_RX_PROBE_REQ:
3777 if (data->rx_probe_req.sa == NULL ||
3778 data->rx_probe_req.ie == NULL)
3779 break;
3780 #ifdef CONFIG_AP
3781 if (wpa_s->ap_iface) {
3782 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3783 data->rx_probe_req.sa,
3784 data->rx_probe_req.da,
3785 data->rx_probe_req.bssid,
3786 data->rx_probe_req.ie,
3787 data->rx_probe_req.ie_len,
3788 data->rx_probe_req.ssi_signal);
3789 break;
3790 }
3791 #endif /* CONFIG_AP */
3792 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3793 data->rx_probe_req.da,
3794 data->rx_probe_req.bssid,
3795 data->rx_probe_req.ie,
3796 data->rx_probe_req.ie_len,
3797 0,
3798 data->rx_probe_req.ssi_signal);
3799 break;
3800 case EVENT_REMAIN_ON_CHANNEL:
3801 #ifdef CONFIG_OFFCHANNEL
3802 offchannel_remain_on_channel_cb(
3803 wpa_s, data->remain_on_channel.freq,
3804 data->remain_on_channel.duration);
3805 #endif /* CONFIG_OFFCHANNEL */
3806 wpas_p2p_remain_on_channel_cb(
3807 wpa_s, data->remain_on_channel.freq,
3808 data->remain_on_channel.duration);
3809 break;
3810 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3811 #ifdef CONFIG_OFFCHANNEL
3812 offchannel_cancel_remain_on_channel_cb(
3813 wpa_s, data->remain_on_channel.freq);
3814 #endif /* CONFIG_OFFCHANNEL */
3815 wpas_p2p_cancel_remain_on_channel_cb(
3816 wpa_s, data->remain_on_channel.freq);
3817 break;
3818 case EVENT_EAPOL_RX:
3819 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3820 data->eapol_rx.data,
3821 data->eapol_rx.data_len);
3822 break;
3823 case EVENT_SIGNAL_CHANGE:
3824 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3825 "above=%d signal=%d noise=%d txrate=%d",
3826 data->signal_change.above_threshold,
3827 data->signal_change.current_signal,
3828 data->signal_change.current_noise,
3829 data->signal_change.current_txrate);
3830 wpa_bss_update_level(wpa_s->current_bss,
3831 data->signal_change.current_signal);
3832 bgscan_notify_signal_change(
3833 wpa_s, data->signal_change.above_threshold,
3834 data->signal_change.current_signal,
3835 data->signal_change.current_noise,
3836 data->signal_change.current_txrate);
3837 break;
3838 case EVENT_INTERFACE_ENABLED:
3839 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3840 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3841 wpa_supplicant_update_mac_addr(wpa_s);
3842 if (wpa_s->p2p_mgmt) {
3843 wpa_supplicant_set_state(wpa_s,
3844 WPA_DISCONNECTED);
3845 break;
3846 }
3847
3848 #ifdef CONFIG_AP
3849 if (!wpa_s->ap_iface) {
3850 wpa_supplicant_set_state(wpa_s,
3851 WPA_DISCONNECTED);
3852 wpa_s->scan_req = NORMAL_SCAN_REQ;
3853 wpa_supplicant_req_scan(wpa_s, 0, 0);
3854 } else
3855 wpa_supplicant_set_state(wpa_s,
3856 WPA_COMPLETED);
3857 #else /* CONFIG_AP */
3858 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3859 wpa_supplicant_req_scan(wpa_s, 0, 0);
3860 #endif /* CONFIG_AP */
3861 }
3862 break;
3863 case EVENT_INTERFACE_DISABLED:
3864 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3865 #ifdef CONFIG_P2P
3866 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3867 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3868 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3869 /*
3870 * Mark interface disabled if this happens to end up not
3871 * being removed as a separate P2P group interface.
3872 */
3873 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3874 /*
3875 * The interface was externally disabled. Remove
3876 * it assuming an external entity will start a
3877 * new session if needed.
3878 */
3879 if (wpa_s->current_ssid &&
3880 wpa_s->current_ssid->p2p_group)
3881 wpas_p2p_interface_unavailable(wpa_s);
3882 else
3883 wpas_p2p_disconnect(wpa_s);
3884 /*
3885 * wpa_s instance may have been freed, so must not use
3886 * it here anymore.
3887 */
3888 break;
3889 }
3890 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3891 p2p_in_progress(wpa_s->global->p2p) > 1) {
3892 /* This radio work will be cancelled, so clear P2P
3893 * state as well.
3894 */
3895 p2p_stop_find(wpa_s->global->p2p);
3896 }
3897 #endif /* CONFIG_P2P */
3898
3899 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3900 /*
3901 * Indicate disconnection to keep ctrl_iface events
3902 * consistent.
3903 */
3904 wpa_supplicant_event_disassoc(
3905 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3906 }
3907 wpa_supplicant_mark_disassoc(wpa_s);
3908 radio_remove_works(wpa_s, NULL, 0);
3909
3910 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3911 break;
3912 case EVENT_CHANNEL_LIST_CHANGED:
3913 wpa_supplicant_update_channel_list(
3914 wpa_s, &data->channel_list_changed);
3915 break;
3916 case EVENT_INTERFACE_UNAVAILABLE:
3917 wpas_p2p_interface_unavailable(wpa_s);
3918 break;
3919 case EVENT_BEST_CHANNEL:
3920 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3921 "(%d %d %d)",
3922 data->best_chan.freq_24, data->best_chan.freq_5,
3923 data->best_chan.freq_overall);
3924 wpa_s->best_24_freq = data->best_chan.freq_24;
3925 wpa_s->best_5_freq = data->best_chan.freq_5;
3926 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3927 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3928 data->best_chan.freq_5,
3929 data->best_chan.freq_overall);
3930 break;
3931 case EVENT_UNPROT_DEAUTH:
3932 wpa_supplicant_event_unprot_deauth(wpa_s,
3933 &data->unprot_deauth);
3934 break;
3935 case EVENT_UNPROT_DISASSOC:
3936 wpa_supplicant_event_unprot_disassoc(wpa_s,
3937 &data->unprot_disassoc);
3938 break;
3939 case EVENT_STATION_LOW_ACK:
3940 #ifdef CONFIG_AP
3941 if (wpa_s->ap_iface && data)
3942 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3943 data->low_ack.addr);
3944 #endif /* CONFIG_AP */
3945 #ifdef CONFIG_TDLS
3946 if (data)
3947 wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3948 data->low_ack.addr);
3949 #endif /* CONFIG_TDLS */
3950 break;
3951 case EVENT_IBSS_PEER_LOST:
3952 #ifdef CONFIG_IBSS_RSN
3953 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3954 #endif /* CONFIG_IBSS_RSN */
3955 break;
3956 case EVENT_DRIVER_GTK_REKEY:
3957 if (os_memcmp(data->driver_gtk_rekey.bssid,
3958 wpa_s->bssid, ETH_ALEN))
3959 break;
3960 if (!wpa_s->wpa)
3961 break;
3962 wpa_sm_update_replay_ctr(wpa_s->wpa,
3963 data->driver_gtk_rekey.replay_ctr);
3964 break;
3965 case EVENT_SCHED_SCAN_STOPPED:
3966 wpa_s->sched_scanning = 0;
3967 resched = wpa_s->scanning && wpas_scan_scheduled(wpa_s);
3968 wpa_supplicant_notify_scanning(wpa_s, 0);
3969
3970 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3971 break;
3972
3973 /*
3974 * Start a new sched scan to continue searching for more SSIDs
3975 * either if timed out or PNO schedule scan is pending.
3976 */
3977 if (wpa_s->sched_scan_timed_out) {
3978 wpa_supplicant_req_sched_scan(wpa_s);
3979 } else if (wpa_s->pno_sched_pending) {
3980 wpa_s->pno_sched_pending = 0;
3981 wpas_start_pno(wpa_s);
3982 } else if (resched) {
3983 wpa_supplicant_req_scan(wpa_s, 0, 0);
3984 }
3985
3986 break;
3987 case EVENT_WPS_BUTTON_PUSHED:
3988 #ifdef CONFIG_WPS
3989 wpas_wps_start_pbc(wpa_s, NULL, 0);
3990 #endif /* CONFIG_WPS */
3991 break;
3992 case EVENT_AVOID_FREQUENCIES:
3993 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3994 break;
3995 case EVENT_CONNECT_FAILED_REASON:
3996 #ifdef CONFIG_AP
3997 if (!wpa_s->ap_iface || !data)
3998 break;
3999 hostapd_event_connect_failed_reason(
4000 wpa_s->ap_iface->bss[0],
4001 data->connect_failed_reason.addr,
4002 data->connect_failed_reason.code);
4003 #endif /* CONFIG_AP */
4004 break;
4005 case EVENT_NEW_PEER_CANDIDATE:
4006 #ifdef CONFIG_MESH
4007 if (!wpa_s->ifmsh || !data)
4008 break;
4009 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
4010 data->mesh_peer.ies,
4011 data->mesh_peer.ie_len);
4012 #endif /* CONFIG_MESH */
4013 break;
4014 case EVENT_SURVEY:
4015 #ifdef CONFIG_AP
4016 if (!wpa_s->ap_iface)
4017 break;
4018 hostapd_event_get_survey(wpa_s->ap_iface,
4019 &data->survey_results);
4020 #endif /* CONFIG_AP */
4021 break;
4022 case EVENT_ACS_CHANNEL_SELECTED:
4023 #ifdef CONFIG_ACS
4024 if (!wpa_s->ap_iface)
4025 break;
4026 hostapd_acs_channel_selected(wpa_s->ap_iface->bss[0],
4027 &data->acs_selected_channels);
4028 #endif /* CONFIG_ACS */
4029 break;
4030 default:
4031 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
4032 break;
4033 }
4034 }
4035
4036
4037 void wpa_supplicant_event_global(void *ctx, enum wpa_event_type event,
4038 union wpa_event_data *data)
4039 {
4040 struct wpa_supplicant *wpa_s;
4041
4042 if (event != EVENT_INTERFACE_STATUS)
4043 return;
4044
4045 wpa_s = wpa_supplicant_get_iface(ctx, data->interface_status.ifname);
4046 if (wpa_s && wpa_s->driver->get_ifindex) {
4047 unsigned int ifindex;
4048
4049 ifindex = wpa_s->driver->get_ifindex(wpa_s->drv_priv);
4050 if (ifindex != data->interface_status.ifindex) {
4051 wpa_dbg(wpa_s, MSG_DEBUG,
4052 "interface status ifindex %d mismatch (%d)",
4053 ifindex, data->interface_status.ifindex);
4054 return;
4055 }
4056 }
4057 #ifdef CONFIG_MATCH_IFACE
4058 else if (data->interface_status.ievent == EVENT_INTERFACE_ADDED) {
4059 struct wpa_interface *wpa_i;
4060
4061 wpa_i = wpa_supplicant_match_iface(
4062 ctx, data->interface_status.ifname);
4063 if (!wpa_i)
4064 return;
4065 wpa_s = wpa_supplicant_add_iface(ctx, wpa_i, NULL);
4066 os_free(wpa_i);
4067 if (wpa_s)
4068 wpa_s->matched = 1;
4069 }
4070 #endif /* CONFIG_MATCH_IFACE */
4071
4072 if (wpa_s)
4073 wpa_supplicant_event(wpa_s, event, data);
4074 }
4075