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P2P: Do not expire peer entry if we are connected to the peer
[thirdparty/hostap.git] / wpa_supplicant / events.c
1 /*
2 * WPA Supplicant - Driver event processing
3 * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15 #include "includes.h"
16
17 #include "common.h"
18 #include "eapol_supp/eapol_supp_sm.h"
19 #include "rsn_supp/wpa.h"
20 #include "eloop.h"
21 #include "config.h"
22 #include "l2_packet/l2_packet.h"
23 #include "wpa_supplicant_i.h"
24 #include "driver_i.h"
25 #include "pcsc_funcs.h"
26 #include "rsn_supp/preauth.h"
27 #include "rsn_supp/pmksa_cache.h"
28 #include "common/wpa_ctrl.h"
29 #include "eap_peer/eap.h"
30 #include "ap/hostapd.h"
31 #include "p2p/p2p.h"
32 #include "notify.h"
33 #include "common/ieee802_11_defs.h"
34 #include "common/ieee802_11_common.h"
35 #include "crypto/random.h"
36 #include "blacklist.h"
37 #include "wpas_glue.h"
38 #include "wps_supplicant.h"
39 #include "ibss_rsn.h"
40 #include "sme.h"
41 #include "gas_query.h"
42 #include "p2p_supplicant.h"
43 #include "bgscan.h"
44 #include "ap.h"
45 #include "bss.h"
46 #include "scan.h"
47 #include "offchannel.h"
48
49
50 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
51 {
52 struct wpa_ssid *ssid, *old_ssid;
53
54 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
55 return 0;
56
57 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
58 "information");
59 ssid = wpa_supplicant_get_ssid(wpa_s);
60 if (ssid == NULL) {
61 wpa_msg(wpa_s, MSG_INFO,
62 "No network configuration found for the current AP");
63 return -1;
64 }
65
66 if (ssid->disabled) {
67 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
68 return -1;
69 }
70
71 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
72 "current AP");
73 if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
74 u8 wpa_ie[80];
75 size_t wpa_ie_len = sizeof(wpa_ie);
76 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
77 wpa_ie, &wpa_ie_len);
78 } else {
79 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
80 }
81
82 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
83 eapol_sm_invalidate_cached_session(wpa_s->eapol);
84 old_ssid = wpa_s->current_ssid;
85 wpa_s->current_ssid = ssid;
86 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
87 wpa_supplicant_initiate_eapol(wpa_s);
88 if (old_ssid != wpa_s->current_ssid)
89 wpas_notify_network_changed(wpa_s);
90
91 return 0;
92 }
93
94
95 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
96 {
97 struct wpa_supplicant *wpa_s = eloop_ctx;
98
99 if (wpa_s->countermeasures) {
100 wpa_s->countermeasures = 0;
101 wpa_drv_set_countermeasures(wpa_s, 0);
102 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
103 wpa_supplicant_req_scan(wpa_s, 0, 0);
104 }
105 }
106
107
108 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
109 {
110 int bssid_changed;
111
112 #ifdef CONFIG_IBSS_RSN
113 ibss_rsn_deinit(wpa_s->ibss_rsn);
114 wpa_s->ibss_rsn = NULL;
115 #endif /* CONFIG_IBSS_RSN */
116
117 #ifdef CONFIG_AP
118 wpa_supplicant_ap_deinit(wpa_s);
119 #endif /* CONFIG_AP */
120
121 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
122 return;
123
124 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
125 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
126 os_memset(wpa_s->bssid, 0, ETH_ALEN);
127 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
128 #ifdef CONFIG_P2P
129 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
130 #endif /* CONFIG_P2P */
131 wpa_s->current_bss = NULL;
132 wpa_s->assoc_freq = 0;
133 #ifdef CONFIG_IEEE80211R
134 #ifdef CONFIG_SME
135 if (wpa_s->sme.ft_ies)
136 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
137 #endif /* CONFIG_SME */
138 #endif /* CONFIG_IEEE80211R */
139
140 if (bssid_changed)
141 wpas_notify_bssid_changed(wpa_s);
142
143 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
144 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
145 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
146 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
147 wpa_s->ap_ies_from_associnfo = 0;
148 }
149
150
151 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
152 {
153 struct wpa_ie_data ie;
154 int pmksa_set = -1;
155 size_t i;
156
157 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
158 ie.pmkid == NULL)
159 return;
160
161 for (i = 0; i < ie.num_pmkid; i++) {
162 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
163 ie.pmkid + i * PMKID_LEN,
164 NULL, NULL, 0);
165 if (pmksa_set == 0) {
166 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
167 break;
168 }
169 }
170
171 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
172 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
173 }
174
175
176 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
177 union wpa_event_data *data)
178 {
179 if (data == NULL) {
180 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
181 "event");
182 return;
183 }
184 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
185 " index=%d preauth=%d",
186 MAC2STR(data->pmkid_candidate.bssid),
187 data->pmkid_candidate.index,
188 data->pmkid_candidate.preauth);
189
190 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
191 data->pmkid_candidate.index,
192 data->pmkid_candidate.preauth);
193 }
194
195
196 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
197 {
198 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
199 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
200 return 0;
201
202 #ifdef IEEE8021X_EAPOL
203 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
204 wpa_s->current_ssid &&
205 !(wpa_s->current_ssid->eapol_flags &
206 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
207 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
208 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
209 * plaintext or static WEP keys). */
210 return 0;
211 }
212 #endif /* IEEE8021X_EAPOL */
213
214 return 1;
215 }
216
217
218 /**
219 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
220 * @wpa_s: pointer to wpa_supplicant data
221 * @ssid: Configuration data for the network
222 * Returns: 0 on success, -1 on failure
223 *
224 * This function is called when starting authentication with a network that is
225 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
226 */
227 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
228 struct wpa_ssid *ssid)
229 {
230 #ifdef IEEE8021X_EAPOL
231 #ifdef PCSC_FUNCS
232 int aka = 0, sim = 0, type;
233
234 if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
235 return 0;
236
237 if (ssid->eap.eap_methods == NULL) {
238 sim = 1;
239 aka = 1;
240 } else {
241 struct eap_method_type *eap = ssid->eap.eap_methods;
242 while (eap->vendor != EAP_VENDOR_IETF ||
243 eap->method != EAP_TYPE_NONE) {
244 if (eap->vendor == EAP_VENDOR_IETF) {
245 if (eap->method == EAP_TYPE_SIM)
246 sim = 1;
247 else if (eap->method == EAP_TYPE_AKA)
248 aka = 1;
249 }
250 eap++;
251 }
252 }
253
254 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
255 sim = 0;
256 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
257 aka = 0;
258
259 if (!sim && !aka) {
260 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
261 "use SIM, but neither EAP-SIM nor EAP-AKA are "
262 "enabled");
263 return 0;
264 }
265
266 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
267 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
268 if (sim && aka)
269 type = SCARD_TRY_BOTH;
270 else if (aka)
271 type = SCARD_USIM_ONLY;
272 else
273 type = SCARD_GSM_SIM_ONLY;
274
275 wpa_s->scard = scard_init(type);
276 if (wpa_s->scard == NULL) {
277 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
278 "(pcsc-lite)");
279 return -1;
280 }
281 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
282 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
283 #endif /* PCSC_FUNCS */
284 #endif /* IEEE8021X_EAPOL */
285
286 return 0;
287 }
288
289
290 #ifndef CONFIG_NO_SCAN_PROCESSING
291 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
292 struct wpa_ssid *ssid)
293 {
294 int i, privacy = 0;
295
296 if (ssid->mixed_cell)
297 return 1;
298
299 #ifdef CONFIG_WPS
300 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
301 return 1;
302 #endif /* CONFIG_WPS */
303
304 for (i = 0; i < NUM_WEP_KEYS; i++) {
305 if (ssid->wep_key_len[i]) {
306 privacy = 1;
307 break;
308 }
309 }
310 #ifdef IEEE8021X_EAPOL
311 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
312 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
313 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
314 privacy = 1;
315 #endif /* IEEE8021X_EAPOL */
316
317 if (wpa_key_mgmt_wpa(ssid->key_mgmt))
318 privacy = 1;
319
320 if (bss->caps & IEEE80211_CAP_PRIVACY)
321 return privacy;
322 return !privacy;
323 }
324
325
326 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
327 struct wpa_ssid *ssid,
328 struct wpa_scan_res *bss)
329 {
330 struct wpa_ie_data ie;
331 int proto_match = 0;
332 const u8 *rsn_ie, *wpa_ie;
333 int ret;
334 int wep_ok;
335
336 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
337 if (ret >= 0)
338 return ret;
339
340 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
341 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
342 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
343 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
344 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
345
346 rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
347 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
348 proto_match++;
349
350 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
351 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
352 "failed");
353 break;
354 }
355
356 if (wep_ok &&
357 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
358 {
359 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
360 "in RSN IE");
361 return 1;
362 }
363
364 if (!(ie.proto & ssid->proto)) {
365 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
366 "mismatch");
367 break;
368 }
369
370 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
371 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
372 "cipher mismatch");
373 break;
374 }
375
376 if (!(ie.group_cipher & ssid->group_cipher)) {
377 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
378 "cipher mismatch");
379 break;
380 }
381
382 if (!(ie.key_mgmt & ssid->key_mgmt)) {
383 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
384 "mismatch");
385 break;
386 }
387
388 #ifdef CONFIG_IEEE80211W
389 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
390 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
391 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
392 "frame protection");
393 break;
394 }
395 #endif /* CONFIG_IEEE80211W */
396
397 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
398 return 1;
399 }
400
401 wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
402 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
403 proto_match++;
404
405 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
406 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
407 "failed");
408 break;
409 }
410
411 if (wep_ok &&
412 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
413 {
414 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
415 "in WPA IE");
416 return 1;
417 }
418
419 if (!(ie.proto & ssid->proto)) {
420 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
421 "mismatch");
422 break;
423 }
424
425 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
426 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
427 "cipher mismatch");
428 break;
429 }
430
431 if (!(ie.group_cipher & ssid->group_cipher)) {
432 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
433 "cipher mismatch");
434 break;
435 }
436
437 if (!(ie.key_mgmt & ssid->key_mgmt)) {
438 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
439 "mismatch");
440 break;
441 }
442
443 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
444 return 1;
445 }
446
447 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
448 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
449 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
450 return 0;
451 }
452
453 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
454 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
455 return 1;
456 }
457
458 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with "
459 "WPA/WPA2");
460
461 return 0;
462 }
463
464
465 static int freq_allowed(int *freqs, int freq)
466 {
467 int i;
468
469 if (freqs == NULL)
470 return 1;
471
472 for (i = 0; freqs[i]; i++)
473 if (freqs[i] == freq)
474 return 1;
475 return 0;
476 }
477
478
479 static int ht_supported(const struct hostapd_hw_modes *mode)
480 {
481 if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
482 /*
483 * The driver did not indicate whether it supports HT. Assume
484 * it does to avoid connection issues.
485 */
486 return 1;
487 }
488
489 /*
490 * IEEE Std 802.11n-2009 20.1.1:
491 * An HT non-AP STA shall support all EQM rates for one spatial stream.
492 */
493 return mode->mcs_set[0] == 0xff;
494 }
495
496
497 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_scan_res *bss)
498 {
499 const struct hostapd_hw_modes *mode = NULL, *modes;
500 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
501 const u8 *rate_ie;
502 int i, j, k;
503
504 if (bss->freq == 0)
505 return 1; /* Cannot do matching without knowing band */
506
507 modes = wpa_s->hw.modes;
508 if (modes == NULL) {
509 /*
510 * The driver does not provide any additional information
511 * about the utilized hardware, so allow the connection attempt
512 * to continue.
513 */
514 return 1;
515 }
516
517 for (i = 0; i < wpa_s->hw.num_modes; i++) {
518 for (j = 0; j < modes[i].num_channels; j++) {
519 int freq = modes[i].channels[j].freq;
520 if (freq == bss->freq) {
521 if (mode &&
522 mode->mode == HOSTAPD_MODE_IEEE80211G)
523 break; /* do not allow 802.11b replace
524 * 802.11g */
525 mode = &modes[i];
526 break;
527 }
528 }
529 }
530
531 if (mode == NULL)
532 return 0;
533
534 for (i = 0; i < (int) sizeof(scan_ie); i++) {
535 rate_ie = wpa_scan_get_ie(bss, scan_ie[i]);
536 if (rate_ie == NULL)
537 continue;
538
539 for (j = 2; j < rate_ie[1] + 2; j++) {
540 int flagged = !!(rate_ie[j] & 0x80);
541 int r = (rate_ie[j] & 0x7f) * 5;
542
543 /*
544 * IEEE Std 802.11n-2009 7.3.2.2:
545 * The new BSS Membership selector value is encoded
546 * like a legacy basic rate, but it is not a rate and
547 * only indicates if the BSS members are required to
548 * support the mandatory features of Clause 20 [HT PHY]
549 * in order to join the BSS.
550 */
551 if (flagged && ((rate_ie[j] & 0x7f) ==
552 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
553 if (!ht_supported(mode)) {
554 wpa_dbg(wpa_s, MSG_DEBUG,
555 " hardware does not support "
556 "HT PHY");
557 return 0;
558 }
559 continue;
560 }
561
562 if (!flagged)
563 continue;
564
565 /* check for legacy basic rates */
566 for (k = 0; k < mode->num_rates; k++) {
567 if (mode->rates[k] == r)
568 break;
569 }
570 if (k == mode->num_rates) {
571 /*
572 * IEEE Std 802.11-2007 7.3.2.2 demands that in
573 * order to join a BSS all required rates
574 * have to be supported by the hardware.
575 */
576 wpa_dbg(wpa_s, MSG_DEBUG, " hardware does "
577 "not support required rate %d.%d Mbps",
578 r / 10, r % 10);
579 return 0;
580 }
581 }
582 }
583
584 return 1;
585 }
586
587
588 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
589 int i, struct wpa_scan_res *bss,
590 struct wpa_ssid *group)
591 {
592 const u8 *ssid_;
593 u8 wpa_ie_len, rsn_ie_len, ssid_len;
594 int wpa;
595 struct wpa_blacklist *e;
596 const u8 *ie;
597 struct wpa_ssid *ssid;
598
599 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
600 ssid_ = ie ? ie + 2 : (u8 *) "";
601 ssid_len = ie ? ie[1] : 0;
602
603 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
604 wpa_ie_len = ie ? ie[1] : 0;
605
606 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
607 rsn_ie_len = ie ? ie[1] : 0;
608
609 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
610 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
611 i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
612 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
613 wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
614
615 e = wpa_blacklist_get(wpa_s, bss->bssid);
616 if (e) {
617 int limit = 1;
618 if (wpa_supplicant_enabled_networks(wpa_s->conf) == 1) {
619 /*
620 * When only a single network is enabled, we can
621 * trigger blacklisting on the first failure. This
622 * should not be done with multiple enabled networks to
623 * avoid getting forced to move into a worse ESS on
624 * single error if there are no other BSSes of the
625 * current ESS.
626 */
627 limit = 0;
628 }
629 if (e->count > limit) {
630 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
631 "(count=%d limit=%d)", e->count, limit);
632 return NULL;
633 }
634 }
635
636 if (ssid_len == 0) {
637 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
638 return NULL;
639 }
640
641 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
642
643 for (ssid = group; ssid; ssid = ssid->pnext) {
644 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
645
646 if (ssid->disabled) {
647 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
648 continue;
649 }
650
651 #ifdef CONFIG_WPS
652 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
653 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
654 "(WPS)");
655 continue;
656 }
657
658 if (wpa && ssid->ssid_len == 0 &&
659 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
660 check_ssid = 0;
661
662 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
663 /* Only allow wildcard SSID match if an AP
664 * advertises active WPS operation that matches
665 * with our mode. */
666 check_ssid = 1;
667 if (ssid->ssid_len == 0 &&
668 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
669 check_ssid = 0;
670 }
671 #endif /* CONFIG_WPS */
672
673 if (ssid->bssid_set && ssid->ssid_len == 0 &&
674 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
675 check_ssid = 0;
676
677 if (check_ssid &&
678 (ssid_len != ssid->ssid_len ||
679 os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
680 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
681 continue;
682 }
683
684 if (ssid->bssid_set &&
685 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
686 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
687 continue;
688 }
689
690 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
691 continue;
692
693 if (!wpa &&
694 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
695 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
696 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
697 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
698 "not allowed");
699 continue;
700 }
701
702 if (!wpa_supplicant_match_privacy(bss, ssid)) {
703 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
704 "mismatch");
705 continue;
706 }
707
708 if (bss->caps & IEEE80211_CAP_IBSS) {
709 wpa_dbg(wpa_s, MSG_DEBUG, " skip - IBSS (adhoc) "
710 "network");
711 continue;
712 }
713
714 if (!freq_allowed(ssid->freq_list, bss->freq)) {
715 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
716 "allowed");
717 continue;
718 }
719
720 if (!rate_match(wpa_s, bss)) {
721 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do "
722 "not match");
723 continue;
724 }
725
726 #ifdef CONFIG_P2P
727 /*
728 * TODO: skip the AP if its P2P IE has Group Formation
729 * bit set in the P2P Group Capability Bitmap and we
730 * are not in Group Formation with that device.
731 */
732 #endif /* CONFIG_P2P */
733
734 /* Matching configuration found */
735 return ssid;
736 }
737
738 /* No matching configuration found */
739 return NULL;
740 }
741
742
743 static struct wpa_bss *
744 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
745 struct wpa_scan_results *scan_res,
746 struct wpa_ssid *group,
747 struct wpa_ssid **selected_ssid)
748 {
749 size_t i;
750
751 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
752 group->priority);
753
754 for (i = 0; i < scan_res->num; i++) {
755 struct wpa_scan_res *bss = scan_res->res[i];
756 const u8 *ie, *ssid;
757 u8 ssid_len;
758
759 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
760 if (!*selected_ssid)
761 continue;
762
763 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
764 ssid = ie ? ie + 2 : (u8 *) "";
765 ssid_len = ie ? ie[1] : 0;
766
767 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
768 " ssid='%s'",
769 MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
770 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
771 }
772
773 return NULL;
774 }
775
776
777 static struct wpa_bss *
778 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
779 struct wpa_scan_results *scan_res,
780 struct wpa_ssid **selected_ssid)
781 {
782 struct wpa_bss *selected = NULL;
783 int prio;
784
785 while (selected == NULL) {
786 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
787 selected = wpa_supplicant_select_bss(
788 wpa_s, scan_res, wpa_s->conf->pssid[prio],
789 selected_ssid);
790 if (selected)
791 break;
792 }
793
794 if (selected == NULL && wpa_s->blacklist &&
795 !wpa_s->countermeasures) {
796 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
797 "blacklist and try again");
798 wpa_blacklist_clear(wpa_s);
799 wpa_s->blacklist_cleared++;
800 } else if (selected == NULL)
801 break;
802 }
803
804 return selected;
805 }
806
807
808 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
809 int timeout_sec, int timeout_usec)
810 {
811 if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
812 /*
813 * No networks are enabled; short-circuit request so
814 * we don't wait timeout seconds before transitioning
815 * to INACTIVE state.
816 */
817 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
818 return;
819 }
820 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
821 }
822
823
824 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
825 struct wpa_bss *selected,
826 struct wpa_ssid *ssid)
827 {
828 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
829 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
830 "PBC session overlap");
831 #ifdef CONFIG_P2P
832 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
833 return -1;
834 #endif /* CONFIG_P2P */
835
836 #ifdef CONFIG_WPS
837 wpas_wps_cancel(wpa_s);
838 #endif /* CONFIG_WPS */
839 return -1;
840 }
841
842 /*
843 * Do not trigger new association unless the BSSID has changed or if
844 * reassociation is requested. If we are in process of associating with
845 * the selected BSSID, do not trigger new attempt.
846 */
847 if (wpa_s->reassociate ||
848 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
849 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
850 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
851 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
852 0))) {
853 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
854 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
855 return 0;
856 }
857 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
858 "reassociate: %d selected: "MACSTR " bssid: " MACSTR
859 " pending: " MACSTR " wpa_state: %s",
860 wpa_s->reassociate, MAC2STR(selected->bssid),
861 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
862 wpa_supplicant_state_txt(wpa_s->wpa_state));
863 wpa_supplicant_associate(wpa_s, selected, ssid);
864 } else {
865 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
866 "selected AP");
867 }
868
869 return 0;
870 }
871
872
873 static struct wpa_ssid *
874 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
875 {
876 int prio;
877 struct wpa_ssid *ssid;
878
879 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
880 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
881 {
882 if (ssid->disabled)
883 continue;
884 if (ssid->mode == IEEE80211_MODE_IBSS ||
885 ssid->mode == IEEE80211_MODE_AP)
886 return ssid;
887 }
888 }
889 return NULL;
890 }
891
892
893 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
894 * on BSS added and BSS changed events */
895 static void wpa_supplicant_rsn_preauth_scan_results(
896 struct wpa_supplicant *wpa_s)
897 {
898 struct wpa_bss *bss;
899
900 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
901 return;
902
903 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
904 const u8 *ssid, *rsn;
905
906 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
907 if (ssid == NULL)
908 continue;
909
910 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
911 if (rsn == NULL)
912 continue;
913
914 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
915 }
916
917 }
918
919
920 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
921 struct wpa_bss *selected,
922 struct wpa_ssid *ssid,
923 struct wpa_scan_results *scan_res)
924 {
925 size_t i;
926 struct wpa_scan_res *current_bss = NULL;
927 int min_diff;
928
929 if (wpa_s->reassociate)
930 return 1; /* explicit request to reassociate */
931 if (wpa_s->wpa_state < WPA_ASSOCIATED)
932 return 1; /* we are not associated; continue */
933 if (wpa_s->current_ssid == NULL)
934 return 1; /* unknown current SSID */
935 if (wpa_s->current_ssid != ssid)
936 return 1; /* different network block */
937
938 if (wpas_driver_bss_selection(wpa_s))
939 return 0; /* Driver-based roaming */
940
941 for (i = 0; i < scan_res->num; i++) {
942 struct wpa_scan_res *res = scan_res->res[i];
943 const u8 *ie;
944 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
945 continue;
946
947 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
948 if (ie == NULL)
949 continue;
950 if (ie[1] != wpa_s->current_ssid->ssid_len ||
951 os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
952 continue;
953 current_bss = res;
954 break;
955 }
956
957 if (!current_bss)
958 return 1; /* current BSS not seen in scan results */
959
960 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
961 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
962 MAC2STR(current_bss->bssid), current_bss->level);
963 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
964 MAC2STR(selected->bssid), selected->level);
965
966 if (wpa_s->current_ssid->bssid_set &&
967 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
968 0) {
969 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
970 "has preferred BSSID");
971 return 1;
972 }
973
974 min_diff = 2;
975 if (current_bss->level < 0) {
976 if (current_bss->level < -85)
977 min_diff = 1;
978 else if (current_bss->level < -80)
979 min_diff = 2;
980 else if (current_bss->level < -75)
981 min_diff = 3;
982 else if (current_bss->level < -70)
983 min_diff = 4;
984 else
985 min_diff = 5;
986 }
987 if (abs(current_bss->level - selected->level) < min_diff) {
988 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
989 "in signal level");
990 return 0;
991 }
992
993 return 1;
994 }
995
996
997 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
998 {
999 const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1000
1001 if (!wpa_s->current_bss || !wpa_s->current_ssid)
1002 return -1;
1003
1004 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1005 return 0;
1006
1007 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1008 WPA_IE_VENDOR_TYPE);
1009 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1010
1011 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1012 bss_wpa ? 2 + bss_wpa[1] : 0) ||
1013 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1014 bss_rsn ? 2 + bss_rsn[1] : 0))
1015 return -1;
1016
1017 return 0;
1018 }
1019
1020
1021 /* Return < 0 if no scan results could be fetched. */
1022 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1023 union wpa_event_data *data)
1024 {
1025 struct wpa_bss *selected;
1026 struct wpa_ssid *ssid = NULL;
1027 struct wpa_scan_results *scan_res;
1028 int ap = 0;
1029
1030 #ifdef CONFIG_AP
1031 if (wpa_s->ap_iface)
1032 ap = 1;
1033 #endif /* CONFIG_AP */
1034
1035 wpa_supplicant_notify_scanning(wpa_s, 0);
1036
1037 #ifdef CONFIG_P2P
1038 if (wpa_s->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
1039 wpa_s->global->p2p != NULL) {
1040 wpa_s->p2p_cb_on_scan_complete = 0;
1041 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
1042 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
1043 "stopped scan processing");
1044 return -1;
1045 }
1046 }
1047 #endif /* CONFIG_P2P */
1048
1049 scan_res = wpa_supplicant_get_scan_results(wpa_s,
1050 data ? &data->scan_info :
1051 NULL, 1);
1052 if (scan_res == NULL) {
1053 if (wpa_s->conf->ap_scan == 2 || ap)
1054 return -1;
1055 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1056 "scanning again");
1057 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1058 return -1;
1059 }
1060
1061 #ifndef CONFIG_NO_RANDOM_POOL
1062 size_t i, num;
1063 num = scan_res->num;
1064 if (num > 10)
1065 num = 10;
1066 for (i = 0; i < num; i++) {
1067 u8 buf[5];
1068 struct wpa_scan_res *res = scan_res->res[i];
1069 buf[0] = res->bssid[5];
1070 buf[1] = res->qual & 0xff;
1071 buf[2] = res->noise & 0xff;
1072 buf[3] = res->level & 0xff;
1073 buf[4] = res->tsf & 0xff;
1074 random_add_randomness(buf, sizeof(buf));
1075 }
1076 #endif /* CONFIG_NO_RANDOM_POOL */
1077
1078 if (wpa_s->scan_res_handler) {
1079 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1080 struct wpa_scan_results *scan_res);
1081
1082 scan_res_handler = wpa_s->scan_res_handler;
1083 wpa_s->scan_res_handler = NULL;
1084 scan_res_handler(wpa_s, scan_res);
1085
1086 wpa_scan_results_free(scan_res);
1087 return 0;
1088 }
1089
1090 if (ap) {
1091 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1092 #ifdef CONFIG_AP
1093 if (wpa_s->ap_iface->scan_cb)
1094 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1095 #endif /* CONFIG_AP */
1096 wpa_scan_results_free(scan_res);
1097 return 0;
1098 }
1099
1100 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1101 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1102 wpas_notify_scan_results(wpa_s);
1103
1104 wpas_notify_scan_done(wpa_s, 1);
1105
1106 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
1107 wpa_scan_results_free(scan_res);
1108 return 0;
1109 }
1110
1111 if (wpa_s->disconnected) {
1112 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1113 wpa_scan_results_free(scan_res);
1114 return 0;
1115 }
1116
1117 if (!wpas_driver_bss_selection(wpa_s) &&
1118 bgscan_notify_scan(wpa_s, scan_res) == 1) {
1119 wpa_scan_results_free(scan_res);
1120 return 0;
1121 }
1122
1123 selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
1124
1125 if (selected) {
1126 int skip;
1127 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
1128 scan_res);
1129 wpa_scan_results_free(scan_res);
1130 if (skip) {
1131 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1132 return 0;
1133 }
1134
1135 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1136 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1137 return -1;
1138 }
1139 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1140 } else {
1141 wpa_scan_results_free(scan_res);
1142 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1143 ssid = wpa_supplicant_pick_new_network(wpa_s);
1144 if (ssid) {
1145 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1146 wpa_supplicant_associate(wpa_s, NULL, ssid);
1147 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1148 } else {
1149 int timeout_sec = wpa_s->scan_interval;
1150 int timeout_usec = 0;
1151 #ifdef CONFIG_P2P
1152 if (wpa_s->p2p_in_provisioning) {
1153 /*
1154 * Use shorter wait during P2P Provisioning
1155 * state to speed up group formation.
1156 */
1157 timeout_sec = 0;
1158 timeout_usec = 250000;
1159 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1160 timeout_usec);
1161 return 0;
1162 }
1163 #endif /* CONFIG_P2P */
1164 if (wpa_supplicant_req_sched_scan(wpa_s))
1165 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1166 timeout_usec);
1167 }
1168 }
1169 return 0;
1170 }
1171
1172
1173 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1174 union wpa_event_data *data)
1175 {
1176 const char *rn, *rn2;
1177 struct wpa_supplicant *ifs;
1178
1179 if (_wpa_supplicant_event_scan_results(wpa_s, data) < 0) {
1180 /*
1181 * If no scan results could be fetched, then no need to
1182 * notify those interfaces that did not actually request
1183 * this scan.
1184 */
1185 return;
1186 }
1187
1188 /*
1189 * Check other interfaces to see if they have the same radio-name. If
1190 * so, they get updated with this same scan info.
1191 */
1192 if (!wpa_s->driver->get_radio_name)
1193 return;
1194
1195 rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1196 if (rn == NULL || rn[0] == '\0')
1197 return;
1198
1199 wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1200 "sharing same radio (%s) in event_scan_results", rn);
1201
1202 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1203 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1204 continue;
1205
1206 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1207 if (rn2 && os_strcmp(rn, rn2) == 0) {
1208 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1209 "sibling", ifs->ifname);
1210 _wpa_supplicant_event_scan_results(ifs, data);
1211 }
1212 }
1213 }
1214
1215 #endif /* CONFIG_NO_SCAN_PROCESSING */
1216
1217
1218 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1219 union wpa_event_data *data)
1220 {
1221 int l, len, found = 0, wpa_found, rsn_found;
1222 const u8 *p;
1223
1224 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1225 if (data->assoc_info.req_ies)
1226 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1227 data->assoc_info.req_ies_len);
1228 if (data->assoc_info.resp_ies) {
1229 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1230 data->assoc_info.resp_ies_len);
1231 #ifdef CONFIG_TDLS
1232 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1233 data->assoc_info.resp_ies_len);
1234 #endif /* CONFIG_TDLS */
1235 }
1236 if (data->assoc_info.beacon_ies)
1237 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1238 data->assoc_info.beacon_ies,
1239 data->assoc_info.beacon_ies_len);
1240 if (data->assoc_info.freq)
1241 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1242 data->assoc_info.freq);
1243
1244 p = data->assoc_info.req_ies;
1245 l = data->assoc_info.req_ies_len;
1246
1247 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1248 while (p && l >= 2) {
1249 len = p[1] + 2;
1250 if (len > l) {
1251 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1252 p, l);
1253 break;
1254 }
1255 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1256 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1257 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1258 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1259 break;
1260 found = 1;
1261 wpa_find_assoc_pmkid(wpa_s);
1262 break;
1263 }
1264 l -= len;
1265 p += len;
1266 }
1267 if (!found && data->assoc_info.req_ies)
1268 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1269
1270 #ifdef CONFIG_IEEE80211R
1271 #ifdef CONFIG_SME
1272 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1273 u8 bssid[ETH_ALEN];
1274 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1275 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1276 data->assoc_info.resp_ies,
1277 data->assoc_info.resp_ies_len,
1278 bssid) < 0) {
1279 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1280 "Reassociation Response failed");
1281 wpa_supplicant_deauthenticate(
1282 wpa_s, WLAN_REASON_INVALID_IE);
1283 return -1;
1284 }
1285 }
1286
1287 p = data->assoc_info.resp_ies;
1288 l = data->assoc_info.resp_ies_len;
1289
1290 #ifdef CONFIG_WPS_STRICT
1291 if (p && wpa_s->current_ssid &&
1292 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1293 struct wpabuf *wps;
1294 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1295 if (wps == NULL) {
1296 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1297 "include WPS IE in (Re)Association Response");
1298 return -1;
1299 }
1300
1301 if (wps_validate_assoc_resp(wps) < 0) {
1302 wpabuf_free(wps);
1303 wpa_supplicant_deauthenticate(
1304 wpa_s, WLAN_REASON_INVALID_IE);
1305 return -1;
1306 }
1307 wpabuf_free(wps);
1308 }
1309 #endif /* CONFIG_WPS_STRICT */
1310
1311 /* Go through the IEs and make a copy of the MDIE, if present. */
1312 while (p && l >= 2) {
1313 len = p[1] + 2;
1314 if (len > l) {
1315 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1316 p, l);
1317 break;
1318 }
1319 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1320 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1321 wpa_s->sme.ft_used = 1;
1322 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1323 MOBILITY_DOMAIN_ID_LEN);
1324 break;
1325 }
1326 l -= len;
1327 p += len;
1328 }
1329 #endif /* CONFIG_SME */
1330
1331 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1332 data->assoc_info.resp_ies_len);
1333 #endif /* CONFIG_IEEE80211R */
1334
1335 /* WPA/RSN IE from Beacon/ProbeResp */
1336 p = data->assoc_info.beacon_ies;
1337 l = data->assoc_info.beacon_ies_len;
1338
1339 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1340 */
1341 wpa_found = rsn_found = 0;
1342 while (p && l >= 2) {
1343 len = p[1] + 2;
1344 if (len > l) {
1345 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1346 p, l);
1347 break;
1348 }
1349 if (!wpa_found &&
1350 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1351 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1352 wpa_found = 1;
1353 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1354 }
1355
1356 if (!rsn_found &&
1357 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1358 rsn_found = 1;
1359 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1360 }
1361
1362 l -= len;
1363 p += len;
1364 }
1365
1366 if (!wpa_found && data->assoc_info.beacon_ies)
1367 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1368 if (!rsn_found && data->assoc_info.beacon_ies)
1369 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1370 if (wpa_found || rsn_found)
1371 wpa_s->ap_ies_from_associnfo = 1;
1372
1373 if (wpa_s->assoc_freq && data->assoc_info.freq &&
1374 wpa_s->assoc_freq != data->assoc_info.freq) {
1375 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1376 "%u to %u MHz",
1377 wpa_s->assoc_freq, data->assoc_info.freq);
1378 wpa_supplicant_update_scan_results(wpa_s);
1379 }
1380
1381 wpa_s->assoc_freq = data->assoc_info.freq;
1382
1383 return 0;
1384 }
1385
1386
1387 static struct wpa_bss * wpa_supplicant_get_new_bss(
1388 struct wpa_supplicant *wpa_s, const u8 *bssid)
1389 {
1390 struct wpa_bss *bss = NULL;
1391 struct wpa_ssid *ssid = wpa_s->current_ssid;
1392
1393 if (ssid->ssid_len > 0)
1394 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
1395 if (!bss)
1396 bss = wpa_bss_get_bssid(wpa_s, bssid);
1397
1398 return bss;
1399 }
1400
1401
1402 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1403 union wpa_event_data *data)
1404 {
1405 u8 bssid[ETH_ALEN];
1406 int ft_completed;
1407 int bssid_changed;
1408 struct wpa_driver_capa capa;
1409
1410 #ifdef CONFIG_AP
1411 if (wpa_s->ap_iface) {
1412 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1413 data->assoc_info.addr,
1414 data->assoc_info.req_ies,
1415 data->assoc_info.req_ies_len,
1416 data->assoc_info.reassoc);
1417 return;
1418 }
1419 #endif /* CONFIG_AP */
1420
1421 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1422 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1423 return;
1424
1425 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1426 if (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1427 os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1428 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1429 MACSTR, MAC2STR(bssid));
1430 random_add_randomness(bssid, ETH_ALEN);
1431 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1432 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1433 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1434 if (bssid_changed)
1435 wpas_notify_bssid_changed(wpa_s);
1436
1437 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1438 wpa_clear_keys(wpa_s, bssid);
1439 }
1440 if (wpa_supplicant_select_config(wpa_s) < 0) {
1441 wpa_supplicant_disassociate(
1442 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1443 return;
1444 }
1445 if (wpa_s->current_ssid) {
1446 struct wpa_bss *bss = NULL;
1447
1448 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1449 if (!bss) {
1450 wpa_supplicant_update_scan_results(wpa_s);
1451
1452 /* Get the BSS from the new scan results */
1453 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1454 }
1455
1456 if (bss)
1457 wpa_s->current_bss = bss;
1458 }
1459
1460 if (wpa_s->conf->ap_scan == 1 &&
1461 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1462 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1463 wpa_msg(wpa_s, MSG_WARNING,
1464 "WPA/RSN IEs not updated");
1465 }
1466 }
1467
1468 #ifdef CONFIG_SME
1469 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1470 wpa_s->sme.prev_bssid_set = 1;
1471 #endif /* CONFIG_SME */
1472
1473 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1474 if (wpa_s->current_ssid) {
1475 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1476 * initialized before association, but for other modes,
1477 * initialize PC/SC here, if the current configuration needs
1478 * smartcard or SIM/USIM. */
1479 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1480 }
1481 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1482 if (wpa_s->l2)
1483 l2_packet_notify_auth_start(wpa_s->l2);
1484
1485 /*
1486 * Set portEnabled first to FALSE in order to get EAP state machine out
1487 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1488 * state machine may transit to AUTHENTICATING state based on obsolete
1489 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1490 * AUTHENTICATED without ever giving chance to EAP state machine to
1491 * reset the state.
1492 */
1493 if (!ft_completed) {
1494 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1495 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1496 }
1497 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1498 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1499 /* 802.1X::portControl = Auto */
1500 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1501 wpa_s->eapol_received = 0;
1502 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1503 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1504 (wpa_s->current_ssid &&
1505 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1506 wpa_supplicant_cancel_auth_timeout(wpa_s);
1507 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1508 } else if (!ft_completed) {
1509 /* Timeout for receiving the first EAPOL packet */
1510 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1511 }
1512 wpa_supplicant_cancel_scan(wpa_s);
1513
1514 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1515 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1516 /*
1517 * We are done; the driver will take care of RSN 4-way
1518 * handshake.
1519 */
1520 wpa_supplicant_cancel_auth_timeout(wpa_s);
1521 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1522 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1523 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1524 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1525 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1526 /*
1527 * The driver will take care of RSN 4-way handshake, so we need
1528 * to allow EAPOL supplicant to complete its work without
1529 * waiting for WPA supplicant.
1530 */
1531 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1532 } else if (ft_completed) {
1533 /*
1534 * FT protocol completed - make sure EAPOL state machine ends
1535 * up in authenticated.
1536 */
1537 wpa_supplicant_cancel_auth_timeout(wpa_s);
1538 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1539 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1540 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1541 }
1542
1543 if (wpa_s->pending_eapol_rx) {
1544 struct os_time now, age;
1545 os_get_time(&now);
1546 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1547 if (age.sec == 0 && age.usec < 100000 &&
1548 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1549 0) {
1550 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1551 "frame that was received just before "
1552 "association notification");
1553 wpa_supplicant_rx_eapol(
1554 wpa_s, wpa_s->pending_eapol_rx_src,
1555 wpabuf_head(wpa_s->pending_eapol_rx),
1556 wpabuf_len(wpa_s->pending_eapol_rx));
1557 }
1558 wpabuf_free(wpa_s->pending_eapol_rx);
1559 wpa_s->pending_eapol_rx = NULL;
1560 }
1561
1562 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1563 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1564 wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1565 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1566 /* Set static WEP keys again */
1567 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1568 }
1569
1570 #ifdef CONFIG_IBSS_RSN
1571 if (wpa_s->current_ssid &&
1572 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1573 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1574 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1575 wpa_s->ibss_rsn == NULL) {
1576 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1577 if (!wpa_s->ibss_rsn) {
1578 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1579 wpa_supplicant_deauthenticate(
1580 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1581 return;
1582 }
1583
1584 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1585 }
1586 #endif /* CONFIG_IBSS_RSN */
1587 }
1588
1589
1590 static int disconnect_reason_recoverable(u16 reason_code)
1591 {
1592 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
1593 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
1594 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
1595 }
1596
1597
1598 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1599 u16 reason_code,
1600 int locally_generated)
1601 {
1602 const u8 *bssid;
1603 int authenticating;
1604 u8 prev_pending_bssid[ETH_ALEN];
1605 struct wpa_bss *fast_reconnect = NULL;
1606 struct wpa_ssid *fast_reconnect_ssid = NULL;
1607
1608 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1609 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1610
1611 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1612 /*
1613 * At least Host AP driver and a Prism3 card seemed to be
1614 * generating streams of disconnected events when configuring
1615 * IBSS for WPA-None. Ignore them for now.
1616 */
1617 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1618 "IBSS/WPA-None mode");
1619 return;
1620 }
1621
1622 if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1623 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1624 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1625 "pre-shared key may be incorrect");
1626 }
1627 if (!wpa_s->auto_reconnect_disabled ||
1628 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1629 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
1630 "reconnect (wps=%d wpa_state=%d)",
1631 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
1632 wpa_s->wpa_state);
1633 if (wpa_s->wpa_state == WPA_COMPLETED &&
1634 wpa_s->current_ssid &&
1635 wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
1636 !locally_generated &&
1637 disconnect_reason_recoverable(reason_code)) {
1638 /*
1639 * It looks like the AP has dropped association with
1640 * us, but could allow us to get back in. Try to
1641 * reconnect to the same BSS without full scan to save
1642 * time for some common cases.
1643 */
1644 fast_reconnect = wpa_s->current_bss;
1645 fast_reconnect_ssid = wpa_s->current_ssid;
1646 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1647 wpa_supplicant_req_scan(wpa_s, 0, 100000);
1648 else
1649 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
1650 "immediate scan");
1651 } else {
1652 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
1653 "try to re-connect");
1654 wpa_s->reassociate = 0;
1655 wpa_s->disconnected = 1;
1656 wpa_supplicant_cancel_sched_scan(wpa_s);
1657 }
1658 bssid = wpa_s->bssid;
1659 if (is_zero_ether_addr(bssid))
1660 bssid = wpa_s->pending_bssid;
1661 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
1662 wpas_connection_failed(wpa_s, bssid);
1663 wpa_sm_notify_disassoc(wpa_s->wpa);
1664 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1665 " reason=%d",
1666 MAC2STR(bssid), reason_code);
1667 if (wpa_supplicant_dynamic_keys(wpa_s)) {
1668 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1669 wpa_s->keys_cleared = 0;
1670 wpa_clear_keys(wpa_s, wpa_s->bssid);
1671 }
1672 wpa_supplicant_mark_disassoc(wpa_s);
1673
1674 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1675 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1676
1677 if (fast_reconnect) {
1678 #ifndef CONFIG_NO_SCAN_PROCESSING
1679 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
1680 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
1681 fast_reconnect_ssid) < 0) {
1682 /* Recover through full scan */
1683 wpa_supplicant_req_scan(wpa_s, 0, 100000);
1684 }
1685 #endif /* CONFIG_NO_SCAN_PROCESSING */
1686 }
1687 }
1688
1689
1690 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1691 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
1692 {
1693 struct wpa_supplicant *wpa_s = eloop_ctx;
1694
1695 if (!wpa_s->pending_mic_error_report)
1696 return;
1697
1698 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1699 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1700 wpa_s->pending_mic_error_report = 0;
1701 }
1702 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1703
1704
1705 static void
1706 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1707 union wpa_event_data *data)
1708 {
1709 int pairwise;
1710 struct os_time t;
1711
1712 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1713 pairwise = (data && data->michael_mic_failure.unicast);
1714 os_get_time(&t);
1715 if ((wpa_s->last_michael_mic_error &&
1716 t.sec - wpa_s->last_michael_mic_error <= 60) ||
1717 wpa_s->pending_mic_error_report) {
1718 if (wpa_s->pending_mic_error_report) {
1719 /*
1720 * Send the pending MIC error report immediately since
1721 * we are going to start countermeasures and AP better
1722 * do the same.
1723 */
1724 wpa_sm_key_request(wpa_s->wpa, 1,
1725 wpa_s->pending_mic_error_pairwise);
1726 }
1727
1728 /* Send the new MIC error report immediately since we are going
1729 * to start countermeasures and AP better do the same.
1730 */
1731 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1732
1733 /* initialize countermeasures */
1734 wpa_s->countermeasures = 1;
1735
1736 wpa_blacklist_add(wpa_s, wpa_s->bssid);
1737
1738 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1739
1740 /*
1741 * Need to wait for completion of request frame. We do not get
1742 * any callback for the message completion, so just wait a
1743 * short while and hope for the best. */
1744 os_sleep(0, 10000);
1745
1746 wpa_drv_set_countermeasures(wpa_s, 1);
1747 wpa_supplicant_deauthenticate(wpa_s,
1748 WLAN_REASON_MICHAEL_MIC_FAILURE);
1749 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1750 wpa_s, NULL);
1751 eloop_register_timeout(60, 0,
1752 wpa_supplicant_stop_countermeasures,
1753 wpa_s, NULL);
1754 /* TODO: mark the AP rejected for 60 second. STA is
1755 * allowed to associate with another AP.. */
1756 } else {
1757 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1758 if (wpa_s->mic_errors_seen) {
1759 /*
1760 * Reduce the effectiveness of Michael MIC error
1761 * reports as a means for attacking against TKIP if
1762 * more than one MIC failure is noticed with the same
1763 * PTK. We delay the transmission of the reports by a
1764 * random time between 0 and 60 seconds in order to
1765 * force the attacker wait 60 seconds before getting
1766 * the information on whether a frame resulted in a MIC
1767 * failure.
1768 */
1769 u8 rval[4];
1770 int sec;
1771
1772 if (os_get_random(rval, sizeof(rval)) < 0)
1773 sec = os_random() % 60;
1774 else
1775 sec = WPA_GET_BE32(rval) % 60;
1776 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
1777 "report %d seconds", sec);
1778 wpa_s->pending_mic_error_report = 1;
1779 wpa_s->pending_mic_error_pairwise = pairwise;
1780 eloop_cancel_timeout(
1781 wpa_supplicant_delayed_mic_error_report,
1782 wpa_s, NULL);
1783 eloop_register_timeout(
1784 sec, os_random() % 1000000,
1785 wpa_supplicant_delayed_mic_error_report,
1786 wpa_s, NULL);
1787 } else {
1788 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1789 }
1790 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1791 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1792 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1793 }
1794 wpa_s->last_michael_mic_error = t.sec;
1795 wpa_s->mic_errors_seen++;
1796 }
1797
1798
1799 #ifdef CONFIG_TERMINATE_ONLASTIF
1800 static int any_interfaces(struct wpa_supplicant *head)
1801 {
1802 struct wpa_supplicant *wpa_s;
1803
1804 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1805 if (!wpa_s->interface_removed)
1806 return 1;
1807 return 0;
1808 }
1809 #endif /* CONFIG_TERMINATE_ONLASTIF */
1810
1811
1812 static void
1813 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1814 union wpa_event_data *data)
1815 {
1816 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1817 return;
1818
1819 switch (data->interface_status.ievent) {
1820 case EVENT_INTERFACE_ADDED:
1821 if (!wpa_s->interface_removed)
1822 break;
1823 wpa_s->interface_removed = 0;
1824 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
1825 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1826 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
1827 "driver after interface was added");
1828 }
1829 break;
1830 case EVENT_INTERFACE_REMOVED:
1831 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
1832 wpa_s->interface_removed = 1;
1833 wpa_supplicant_mark_disassoc(wpa_s);
1834 l2_packet_deinit(wpa_s->l2);
1835 wpa_s->l2 = NULL;
1836 #ifdef CONFIG_IBSS_RSN
1837 ibss_rsn_deinit(wpa_s->ibss_rsn);
1838 wpa_s->ibss_rsn = NULL;
1839 #endif /* CONFIG_IBSS_RSN */
1840 #ifdef CONFIG_TERMINATE_ONLASTIF
1841 /* check if last interface */
1842 if (!any_interfaces(wpa_s->global->ifaces))
1843 eloop_terminate();
1844 #endif /* CONFIG_TERMINATE_ONLASTIF */
1845 break;
1846 }
1847 }
1848
1849
1850 #ifdef CONFIG_PEERKEY
1851 static void
1852 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1853 union wpa_event_data *data)
1854 {
1855 if (data == NULL)
1856 return;
1857 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1858 }
1859 #endif /* CONFIG_PEERKEY */
1860
1861
1862 #ifdef CONFIG_TDLS
1863 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
1864 union wpa_event_data *data)
1865 {
1866 if (data == NULL)
1867 return;
1868 switch (data->tdls.oper) {
1869 case TDLS_REQUEST_SETUP:
1870 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
1871 break;
1872 case TDLS_REQUEST_TEARDOWN:
1873 wpa_tdls_send_teardown(wpa_s->wpa, data->tdls.peer,
1874 data->tdls.reason_code);
1875 break;
1876 }
1877 }
1878 #endif /* CONFIG_TDLS */
1879
1880
1881 #ifdef CONFIG_IEEE80211R
1882 static void
1883 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1884 union wpa_event_data *data)
1885 {
1886 if (data == NULL)
1887 return;
1888
1889 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1890 data->ft_ies.ies_len,
1891 data->ft_ies.ft_action,
1892 data->ft_ies.target_ap,
1893 data->ft_ies.ric_ies,
1894 data->ft_ies.ric_ies_len) < 0) {
1895 /* TODO: prevent MLME/driver from trying to associate? */
1896 }
1897 }
1898 #endif /* CONFIG_IEEE80211R */
1899
1900
1901 #ifdef CONFIG_IBSS_RSN
1902 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1903 union wpa_event_data *data)
1904 {
1905 struct wpa_ssid *ssid;
1906 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1907 return;
1908 if (data == NULL)
1909 return;
1910 ssid = wpa_s->current_ssid;
1911 if (ssid == NULL)
1912 return;
1913 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
1914 return;
1915
1916 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1917 }
1918 #endif /* CONFIG_IBSS_RSN */
1919
1920
1921 #ifdef CONFIG_IEEE80211R
1922 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1923 size_t len)
1924 {
1925 const u8 *sta_addr, *target_ap_addr;
1926 u16 status;
1927
1928 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1929 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1930 return; /* only SME case supported for now */
1931 if (len < 1 + 2 * ETH_ALEN + 2)
1932 return;
1933 if (data[0] != 2)
1934 return; /* Only FT Action Response is supported for now */
1935 sta_addr = data + 1;
1936 target_ap_addr = data + 1 + ETH_ALEN;
1937 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1938 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
1939 MACSTR " TargetAP " MACSTR " status %u",
1940 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1941
1942 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1943 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1944 " in FT Action Response", MAC2STR(sta_addr));
1945 return;
1946 }
1947
1948 if (status) {
1949 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
1950 "failure (status code %d)", status);
1951 /* TODO: report error to FT code(?) */
1952 return;
1953 }
1954
1955 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1956 len - (1 + 2 * ETH_ALEN + 2), 1,
1957 target_ap_addr, NULL, 0) < 0)
1958 return;
1959
1960 #ifdef CONFIG_SME
1961 {
1962 struct wpa_bss *bss;
1963 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1964 if (bss)
1965 wpa_s->sme.freq = bss->freq;
1966 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1967 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1968 WLAN_AUTH_FT);
1969 }
1970 #endif /* CONFIG_SME */
1971 }
1972 #endif /* CONFIG_IEEE80211R */
1973
1974
1975 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
1976 struct unprot_deauth *e)
1977 {
1978 #ifdef CONFIG_IEEE80211W
1979 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
1980 "dropped: " MACSTR " -> " MACSTR
1981 " (reason code %u)",
1982 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1983 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1984 #endif /* CONFIG_IEEE80211W */
1985 }
1986
1987
1988 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
1989 struct unprot_disassoc *e)
1990 {
1991 #ifdef CONFIG_IEEE80211W
1992 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
1993 "dropped: " MACSTR " -> " MACSTR
1994 " (reason code %u)",
1995 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1996 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1997 #endif /* CONFIG_IEEE80211W */
1998 }
1999
2000
2001 static void wnm_action_rx(struct wpa_supplicant *wpa_s, struct rx_action *rx)
2002 {
2003 u8 action, mode;
2004 const u8 *pos, *end;
2005
2006 if (rx->data == NULL || rx->len == 0)
2007 return;
2008
2009 pos = rx->data;
2010 end = pos + rx->len;
2011 action = *pos++;
2012
2013 wpa_printf(MSG_DEBUG, "WNM: RX action %u from " MACSTR,
2014 action, MAC2STR(rx->sa));
2015 switch (action) {
2016 case WNM_BSS_TRANS_MGMT_REQ:
2017 if (pos + 5 > end)
2018 break;
2019 wpa_printf(MSG_DEBUG, "WNM: BSS Transition Management "
2020 "Request: dialog_token=%u request_mode=0x%x "
2021 "disassoc_timer=%u validity_interval=%u",
2022 pos[0], pos[1], WPA_GET_LE16(pos + 2), pos[4]);
2023 mode = pos[1];
2024 pos += 5;
2025 if (mode & 0x08)
2026 pos += 12; /* BSS Termination Duration */
2027 if (mode & 0x10) {
2028 char url[256];
2029 if (pos + 1 > end || pos + 1 + pos[0] > end) {
2030 wpa_printf(MSG_DEBUG, "WNM: Invalid BSS "
2031 "Transition Management Request "
2032 "(URL)");
2033 break;
2034 }
2035 os_memcpy(url, pos + 1, pos[0]);
2036 url[pos[0]] = '\0';
2037 wpa_msg(wpa_s, MSG_INFO, "WNM: ESS Disassociation "
2038 "Imminent - session_info_url=%s", url);
2039 }
2040 break;
2041 }
2042 }
2043
2044
2045 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2046 union wpa_event_data *data)
2047 {
2048 struct wpa_supplicant *wpa_s = ctx;
2049 u16 reason_code = 0;
2050 int locally_generated = 0;
2051
2052 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2053 event != EVENT_INTERFACE_ENABLED &&
2054 event != EVENT_INTERFACE_STATUS &&
2055 event != EVENT_SCHED_SCAN_STOPPED) {
2056 wpa_dbg(wpa_s, MSG_DEBUG,
2057 "Ignore event %s (%d) while interface is disabled",
2058 event_to_string(event), event);
2059 return;
2060 }
2061
2062 #ifndef CONFIG_NO_STDOUT_DEBUG
2063 {
2064 int level = MSG_DEBUG;
2065
2066 if (event == EVENT_RX_MGMT && data && data->rx_mgmt.frame &&
2067 data->rx_mgmt.frame_len >= 24) {
2068 const struct ieee80211_hdr *hdr;
2069 u16 fc;
2070 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2071 fc = le_to_host16(hdr->frame_control);
2072 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2073 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2074 level = MSG_EXCESSIVE;
2075 }
2076
2077 wpa_dbg(wpa_s, level, "Event %s (%d) received",
2078 event_to_string(event), event);
2079 }
2080 #endif /* CONFIG_NO_STDOUT_DEBUG */
2081
2082 switch (event) {
2083 case EVENT_AUTH:
2084 sme_event_auth(wpa_s, data);
2085 break;
2086 case EVENT_ASSOC:
2087 wpa_supplicant_event_assoc(wpa_s, data);
2088 break;
2089 case EVENT_DISASSOC:
2090 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2091 if (data) {
2092 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2093 data->disassoc_info.reason_code,
2094 data->disassoc_info.locally_generated ?
2095 " (locally generated)" : "");
2096 if (data->disassoc_info.addr)
2097 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2098 MAC2STR(data->disassoc_info.addr));
2099 }
2100 #ifdef CONFIG_AP
2101 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
2102 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2103 data->disassoc_info.addr);
2104 break;
2105 }
2106 if (wpa_s->ap_iface) {
2107 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in "
2108 "AP mode");
2109 break;
2110 }
2111 #endif /* CONFIG_AP */
2112 if (data) {
2113 reason_code = data->disassoc_info.reason_code;
2114 locally_generated =
2115 data->disassoc_info.locally_generated;
2116 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2117 data->disassoc_info.ie,
2118 data->disassoc_info.ie_len);
2119 #ifdef CONFIG_P2P
2120 wpas_p2p_disassoc_notif(
2121 wpa_s, data->disassoc_info.addr, reason_code,
2122 data->disassoc_info.ie,
2123 data->disassoc_info.ie_len);
2124 #endif /* CONFIG_P2P */
2125 }
2126 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2127 sme_event_disassoc(wpa_s, data);
2128 /* fall through */
2129 case EVENT_DEAUTH:
2130 if (event == EVENT_DEAUTH) {
2131 wpa_dbg(wpa_s, MSG_DEBUG,
2132 "Deauthentication notification");
2133 if (data) {
2134 reason_code = data->deauth_info.reason_code;
2135 locally_generated =
2136 data->deauth_info.locally_generated;
2137 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2138 data->deauth_info.reason_code,
2139 data->deauth_info.locally_generated ?
2140 " (locally generated)" : "");
2141 if (data->deauth_info.addr) {
2142 wpa_dbg(wpa_s, MSG_DEBUG, " * address "
2143 MACSTR,
2144 MAC2STR(data->deauth_info.
2145 addr));
2146 }
2147 wpa_hexdump(MSG_DEBUG,
2148 "Deauthentication frame IE(s)",
2149 data->deauth_info.ie,
2150 data->deauth_info.ie_len);
2151 #ifdef CONFIG_P2P
2152 wpas_p2p_deauth_notif(
2153 wpa_s, data->deauth_info.addr,
2154 reason_code,
2155 data->deauth_info.ie,
2156 data->deauth_info.ie_len);
2157 #endif /* CONFIG_P2P */
2158 }
2159 }
2160 #ifdef CONFIG_AP
2161 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
2162 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2163 data->deauth_info.addr);
2164 break;
2165 }
2166 if (wpa_s->ap_iface) {
2167 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in "
2168 "AP mode");
2169 break;
2170 }
2171 #endif /* CONFIG_AP */
2172 wpa_supplicant_event_disassoc(wpa_s, reason_code,
2173 locally_generated);
2174 break;
2175 case EVENT_MICHAEL_MIC_FAILURE:
2176 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2177 break;
2178 #ifndef CONFIG_NO_SCAN_PROCESSING
2179 case EVENT_SCAN_RESULTS:
2180 wpa_supplicant_event_scan_results(wpa_s, data);
2181 break;
2182 #endif /* CONFIG_NO_SCAN_PROCESSING */
2183 case EVENT_ASSOCINFO:
2184 wpa_supplicant_event_associnfo(wpa_s, data);
2185 break;
2186 case EVENT_INTERFACE_STATUS:
2187 wpa_supplicant_event_interface_status(wpa_s, data);
2188 break;
2189 case EVENT_PMKID_CANDIDATE:
2190 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2191 break;
2192 #ifdef CONFIG_PEERKEY
2193 case EVENT_STKSTART:
2194 wpa_supplicant_event_stkstart(wpa_s, data);
2195 break;
2196 #endif /* CONFIG_PEERKEY */
2197 #ifdef CONFIG_TDLS
2198 case EVENT_TDLS:
2199 wpa_supplicant_event_tdls(wpa_s, data);
2200 break;
2201 #endif /* CONFIG_TDLS */
2202 #ifdef CONFIG_IEEE80211R
2203 case EVENT_FT_RESPONSE:
2204 wpa_supplicant_event_ft_response(wpa_s, data);
2205 break;
2206 #endif /* CONFIG_IEEE80211R */
2207 #ifdef CONFIG_IBSS_RSN
2208 case EVENT_IBSS_RSN_START:
2209 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2210 break;
2211 #endif /* CONFIG_IBSS_RSN */
2212 case EVENT_ASSOC_REJECT:
2213 if (data->assoc_reject.bssid)
2214 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2215 "bssid=" MACSTR " status_code=%u",
2216 MAC2STR(data->assoc_reject.bssid),
2217 data->assoc_reject.status_code);
2218 else
2219 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2220 "status_code=%u",
2221 data->assoc_reject.status_code);
2222 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2223 sme_event_assoc_reject(wpa_s, data);
2224 break;
2225 case EVENT_AUTH_TIMED_OUT:
2226 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2227 sme_event_auth_timed_out(wpa_s, data);
2228 break;
2229 case EVENT_ASSOC_TIMED_OUT:
2230 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2231 sme_event_assoc_timed_out(wpa_s, data);
2232 break;
2233 case EVENT_TX_STATUS:
2234 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2235 " type=%d stype=%d",
2236 MAC2STR(data->tx_status.dst),
2237 data->tx_status.type, data->tx_status.stype);
2238 #ifdef CONFIG_AP
2239 if (wpa_s->ap_iface == NULL) {
2240 #ifdef CONFIG_OFFCHANNEL
2241 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2242 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2243 offchannel_send_action_tx_status(
2244 wpa_s, data->tx_status.dst,
2245 data->tx_status.data,
2246 data->tx_status.data_len,
2247 data->tx_status.ack ?
2248 OFFCHANNEL_SEND_ACTION_SUCCESS :
2249 OFFCHANNEL_SEND_ACTION_NO_ACK);
2250 #endif /* CONFIG_OFFCHANNEL */
2251 break;
2252 }
2253 #endif /* CONFIG_AP */
2254 #ifdef CONFIG_OFFCHANNEL
2255 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2256 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2257 /*
2258 * Catch TX status events for Action frames we sent via group
2259 * interface in GO mode.
2260 */
2261 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2262 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2263 os_memcmp(wpa_s->parent->pending_action_dst,
2264 data->tx_status.dst, ETH_ALEN) == 0) {
2265 offchannel_send_action_tx_status(
2266 wpa_s->parent, data->tx_status.dst,
2267 data->tx_status.data,
2268 data->tx_status.data_len,
2269 data->tx_status.ack ?
2270 OFFCHANNEL_SEND_ACTION_SUCCESS :
2271 OFFCHANNEL_SEND_ACTION_NO_ACK);
2272 break;
2273 }
2274 #endif /* CONFIG_OFFCHANNEL */
2275 #ifdef CONFIG_AP
2276 switch (data->tx_status.type) {
2277 case WLAN_FC_TYPE_MGMT:
2278 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2279 data->tx_status.data_len,
2280 data->tx_status.stype,
2281 data->tx_status.ack);
2282 break;
2283 case WLAN_FC_TYPE_DATA:
2284 ap_tx_status(wpa_s, data->tx_status.dst,
2285 data->tx_status.data,
2286 data->tx_status.data_len,
2287 data->tx_status.ack);
2288 break;
2289 }
2290 #endif /* CONFIG_AP */
2291 break;
2292 #ifdef CONFIG_AP
2293 case EVENT_EAPOL_TX_STATUS:
2294 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
2295 data->eapol_tx_status.data,
2296 data->eapol_tx_status.data_len,
2297 data->eapol_tx_status.ack);
2298 break;
2299 case EVENT_DRIVER_CLIENT_POLL_OK:
2300 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2301 break;
2302 case EVENT_RX_FROM_UNKNOWN:
2303 if (wpa_s->ap_iface == NULL)
2304 break;
2305 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2306 data->rx_from_unknown.wds);
2307 break;
2308 case EVENT_RX_MGMT:
2309 if (wpa_s->ap_iface == NULL) {
2310 #ifdef CONFIG_P2P
2311 u16 fc, stype;
2312 const struct ieee80211_mgmt *mgmt;
2313 mgmt = (const struct ieee80211_mgmt *)
2314 data->rx_mgmt.frame;
2315 fc = le_to_host16(mgmt->frame_control);
2316 stype = WLAN_FC_GET_STYPE(fc);
2317 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2318 data->rx_mgmt.frame_len > 24) {
2319 const u8 *src = mgmt->sa;
2320 const u8 *ie = mgmt->u.probe_req.variable;
2321 size_t ie_len = data->rx_mgmt.frame_len -
2322 (mgmt->u.probe_req.variable -
2323 data->rx_mgmt.frame);
2324 wpas_p2p_probe_req_rx(wpa_s, src, mgmt->da,
2325 mgmt->bssid, ie, ie_len);
2326 break;
2327 }
2328 #endif /* CONFIG_P2P */
2329 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2330 "management frame in non-AP mode");
2331 break;
2332 }
2333 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2334 break;
2335 #endif /* CONFIG_AP */
2336 case EVENT_RX_ACTION:
2337 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2338 " Category=%u DataLen=%d freq=%d MHz",
2339 MAC2STR(data->rx_action.sa),
2340 data->rx_action.category, (int) data->rx_action.len,
2341 data->rx_action.freq);
2342 #ifdef CONFIG_IEEE80211R
2343 if (data->rx_action.category == WLAN_ACTION_FT) {
2344 ft_rx_action(wpa_s, data->rx_action.data,
2345 data->rx_action.len);
2346 break;
2347 }
2348 #endif /* CONFIG_IEEE80211R */
2349 #ifdef CONFIG_IEEE80211W
2350 #ifdef CONFIG_SME
2351 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2352 sme_sa_query_rx(wpa_s, data->rx_action.sa,
2353 data->rx_action.data,
2354 data->rx_action.len);
2355 break;
2356 }
2357 #endif /* CONFIG_SME */
2358 #endif /* CONFIG_IEEE80211W */
2359 #ifdef CONFIG_GAS
2360 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2361 gas_query_rx(wpa_s->gas, data->rx_action.da,
2362 data->rx_action.sa, data->rx_action.bssid,
2363 data->rx_action.data, data->rx_action.len,
2364 data->rx_action.freq) == 0)
2365 break;
2366 #endif /* CONFIG_GAS */
2367 if (data->rx_action.category == WLAN_ACTION_WNM) {
2368 wnm_action_rx(wpa_s, &data->rx_action);
2369 break;
2370 }
2371 #ifdef CONFIG_TDLS
2372 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2373 data->rx_action.len >= 4 &&
2374 data->rx_action.data[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2375 wpa_dbg(wpa_s, MSG_DEBUG, "TDLS: Received Discovery "
2376 "Response from " MACSTR,
2377 MAC2STR(data->rx_action.sa));
2378 break;
2379 }
2380 #endif /* CONFIG_TDLS */
2381 #ifdef CONFIG_P2P
2382 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2383 data->rx_action.sa,
2384 data->rx_action.bssid,
2385 data->rx_action.category,
2386 data->rx_action.data,
2387 data->rx_action.len, data->rx_action.freq);
2388 #endif /* CONFIG_P2P */
2389 break;
2390 case EVENT_RX_PROBE_REQ:
2391 if (data->rx_probe_req.sa == NULL ||
2392 data->rx_probe_req.ie == NULL)
2393 break;
2394 #ifdef CONFIG_AP
2395 if (wpa_s->ap_iface) {
2396 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2397 data->rx_probe_req.sa,
2398 data->rx_probe_req.da,
2399 data->rx_probe_req.bssid,
2400 data->rx_probe_req.ie,
2401 data->rx_probe_req.ie_len);
2402 break;
2403 }
2404 #endif /* CONFIG_AP */
2405 #ifdef CONFIG_P2P
2406 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2407 data->rx_probe_req.da,
2408 data->rx_probe_req.bssid,
2409 data->rx_probe_req.ie,
2410 data->rx_probe_req.ie_len);
2411 #endif /* CONFIG_P2P */
2412 break;
2413 case EVENT_REMAIN_ON_CHANNEL:
2414 #ifdef CONFIG_OFFCHANNEL
2415 offchannel_remain_on_channel_cb(
2416 wpa_s, data->remain_on_channel.freq,
2417 data->remain_on_channel.duration);
2418 #endif /* CONFIG_OFFCHANNEL */
2419 #ifdef CONFIG_P2P
2420 wpas_p2p_remain_on_channel_cb(
2421 wpa_s, data->remain_on_channel.freq,
2422 data->remain_on_channel.duration);
2423 #endif /* CONFIG_P2P */
2424 break;
2425 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2426 #ifdef CONFIG_OFFCHANNEL
2427 offchannel_cancel_remain_on_channel_cb(
2428 wpa_s, data->remain_on_channel.freq);
2429 #endif /* CONFIG_OFFCHANNEL */
2430 #ifdef CONFIG_P2P
2431 wpas_p2p_cancel_remain_on_channel_cb(
2432 wpa_s, data->remain_on_channel.freq);
2433 #endif /* CONFIG_P2P */
2434 break;
2435 #ifdef CONFIG_P2P
2436 case EVENT_P2P_DEV_FOUND: {
2437 struct p2p_peer_info peer_info;
2438
2439 os_memset(&peer_info, 0, sizeof(peer_info));
2440 if (data->p2p_dev_found.dev_addr)
2441 os_memcpy(peer_info.p2p_device_addr,
2442 data->p2p_dev_found.dev_addr, ETH_ALEN);
2443 if (data->p2p_dev_found.pri_dev_type)
2444 os_memcpy(peer_info.pri_dev_type,
2445 data->p2p_dev_found.pri_dev_type,
2446 sizeof(peer_info.pri_dev_type));
2447 if (data->p2p_dev_found.dev_name)
2448 os_strlcpy(peer_info.device_name,
2449 data->p2p_dev_found.dev_name,
2450 sizeof(peer_info.device_name));
2451 peer_info.config_methods = data->p2p_dev_found.config_methods;
2452 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2453 peer_info.group_capab = data->p2p_dev_found.group_capab;
2454
2455 /*
2456 * FIX: new_device=1 is not necessarily correct. We should
2457 * maintain a P2P peer database in wpa_supplicant and update
2458 * this information based on whether the peer is truly new.
2459 */
2460 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2461 break;
2462 }
2463 case EVENT_P2P_GO_NEG_REQ_RX:
2464 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2465 data->p2p_go_neg_req_rx.dev_passwd_id);
2466 break;
2467 case EVENT_P2P_GO_NEG_COMPLETED:
2468 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2469 break;
2470 case EVENT_P2P_PROV_DISC_REQUEST:
2471 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2472 data->p2p_prov_disc_req.config_methods,
2473 data->p2p_prov_disc_req.dev_addr,
2474 data->p2p_prov_disc_req.pri_dev_type,
2475 data->p2p_prov_disc_req.dev_name,
2476 data->p2p_prov_disc_req.supp_config_methods,
2477 data->p2p_prov_disc_req.dev_capab,
2478 data->p2p_prov_disc_req.group_capab,
2479 NULL, 0);
2480 break;
2481 case EVENT_P2P_PROV_DISC_RESPONSE:
2482 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2483 data->p2p_prov_disc_resp.config_methods);
2484 break;
2485 case EVENT_P2P_SD_REQUEST:
2486 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2487 data->p2p_sd_req.sa,
2488 data->p2p_sd_req.dialog_token,
2489 data->p2p_sd_req.update_indic,
2490 data->p2p_sd_req.tlvs,
2491 data->p2p_sd_req.tlvs_len);
2492 break;
2493 case EVENT_P2P_SD_RESPONSE:
2494 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2495 data->p2p_sd_resp.update_indic,
2496 data->p2p_sd_resp.tlvs,
2497 data->p2p_sd_resp.tlvs_len);
2498 break;
2499 #endif /* CONFIG_P2P */
2500 case EVENT_EAPOL_RX:
2501 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2502 data->eapol_rx.data,
2503 data->eapol_rx.data_len);
2504 break;
2505 case EVENT_SIGNAL_CHANGE:
2506 bgscan_notify_signal_change(
2507 wpa_s, data->signal_change.above_threshold,
2508 data->signal_change.current_signal,
2509 data->signal_change.current_noise,
2510 data->signal_change.current_txrate);
2511 break;
2512 case EVENT_INTERFACE_ENABLED:
2513 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2514 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2515 wpa_supplicant_update_mac_addr(wpa_s);
2516 #ifdef CONFIG_AP
2517 if (!wpa_s->ap_iface) {
2518 wpa_supplicant_set_state(wpa_s,
2519 WPA_DISCONNECTED);
2520 wpa_supplicant_req_scan(wpa_s, 0, 0);
2521 } else
2522 wpa_supplicant_set_state(wpa_s,
2523 WPA_COMPLETED);
2524 #else /* CONFIG_AP */
2525 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2526 wpa_supplicant_req_scan(wpa_s, 0, 0);
2527 #endif /* CONFIG_AP */
2528 }
2529 break;
2530 case EVENT_INTERFACE_DISABLED:
2531 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2532 wpa_supplicant_mark_disassoc(wpa_s);
2533 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2534 break;
2535 case EVENT_CHANNEL_LIST_CHANGED:
2536 if (wpa_s->drv_priv == NULL)
2537 break; /* Ignore event during drv initialization */
2538 #ifdef CONFIG_P2P
2539 wpas_p2p_update_channel_list(wpa_s);
2540 #endif /* CONFIG_P2P */
2541 break;
2542 case EVENT_INTERFACE_UNAVAILABLE:
2543 #ifdef CONFIG_P2P
2544 wpas_p2p_interface_unavailable(wpa_s);
2545 #endif /* CONFIG_P2P */
2546 break;
2547 case EVENT_BEST_CHANNEL:
2548 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2549 "(%d %d %d)",
2550 data->best_chan.freq_24, data->best_chan.freq_5,
2551 data->best_chan.freq_overall);
2552 wpa_s->best_24_freq = data->best_chan.freq_24;
2553 wpa_s->best_5_freq = data->best_chan.freq_5;
2554 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2555 #ifdef CONFIG_P2P
2556 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2557 data->best_chan.freq_5,
2558 data->best_chan.freq_overall);
2559 #endif /* CONFIG_P2P */
2560 break;
2561 case EVENT_UNPROT_DEAUTH:
2562 wpa_supplicant_event_unprot_deauth(wpa_s,
2563 &data->unprot_deauth);
2564 break;
2565 case EVENT_UNPROT_DISASSOC:
2566 wpa_supplicant_event_unprot_disassoc(wpa_s,
2567 &data->unprot_disassoc);
2568 break;
2569 case EVENT_STATION_LOW_ACK:
2570 #ifdef CONFIG_AP
2571 if (wpa_s->ap_iface && data)
2572 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2573 data->low_ack.addr);
2574 #endif /* CONFIG_AP */
2575 #ifdef CONFIG_TDLS
2576 if (data)
2577 wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
2578 #endif /* CONFIG_TDLS */
2579 break;
2580 case EVENT_IBSS_PEER_LOST:
2581 #ifdef CONFIG_IBSS_RSN
2582 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2583 #endif /* CONFIG_IBSS_RSN */
2584 break;
2585 case EVENT_DRIVER_GTK_REKEY:
2586 if (os_memcmp(data->driver_gtk_rekey.bssid,
2587 wpa_s->bssid, ETH_ALEN))
2588 break;
2589 if (!wpa_s->wpa)
2590 break;
2591 wpa_sm_update_replay_ctr(wpa_s->wpa,
2592 data->driver_gtk_rekey.replay_ctr);
2593 break;
2594 case EVENT_SCHED_SCAN_STOPPED:
2595 wpa_s->sched_scanning = 0;
2596 wpa_supplicant_notify_scanning(wpa_s, 0);
2597
2598 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2599 break;
2600
2601 /*
2602 * If we timed out, start a new sched scan to continue
2603 * searching for more SSIDs.
2604 */
2605 if (wpa_s->sched_scan_timed_out)
2606 wpa_supplicant_req_sched_scan(wpa_s);
2607 break;
2608 case EVENT_WPS_BUTTON_PUSHED:
2609 #ifdef CONFIG_WPS
2610 wpas_wps_start_pbc(wpa_s, NULL, 0);
2611 #endif /* CONFIG_WPS */
2612 break;
2613 default:
2614 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2615 break;
2616 }
2617 }
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