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