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 "wnm_sta.h"
27 #include "notify.h"
28 #include "common/ieee802_11_defs.h"
29 #include "common/ieee802_11_common.h"
30 #include "crypto/random.h"
31 #include "blacklist.h"
32 #include "wpas_glue.h"
33 #include "wps_supplicant.h"
34 #include "ibss_rsn.h"
35 #include "sme.h"
36 #include "gas_query.h"
37 #include "p2p_supplicant.h"
38 #include "bgscan.h"
39 #include "autoscan.h"
40 #include "ap.h"
41 #include "bss.h"
42 #include "scan.h"
43 #include "offchannel.h"
44 #include "interworking.h"
45
46
wpas_temp_disabled(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)47 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
48 struct wpa_ssid *ssid)
49 {
50 struct os_time now;
51
52 if (ssid == NULL || ssid->disabled_until.sec == 0)
53 return 0;
54
55 os_get_time(&now);
56 if (ssid->disabled_until.sec > now.sec)
57 return ssid->disabled_until.sec - now.sec;
58
59 wpas_clear_temp_disabled(wpa_s, ssid, 0);
60
61 return 0;
62 }
63
64
wpa_supplicant_select_config(struct wpa_supplicant * wpa_s)65 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
66 {
67 struct wpa_ssid *ssid, *old_ssid;
68 int res;
69
70 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
71 return 0;
72
73 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
74 "information");
75 ssid = wpa_supplicant_get_ssid(wpa_s);
76 if (ssid == NULL) {
77 wpa_msg(wpa_s, MSG_INFO,
78 "No network configuration found for the current AP");
79 return -1;
80 }
81
82 if (wpas_network_disabled(wpa_s, ssid)) {
83 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
84 return -1;
85 }
86
87 if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
88 disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
89 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
90 return -1;
91 }
92
93 res = wpas_temp_disabled(wpa_s, ssid);
94 if (res > 0) {
95 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
96 "disabled for %d second(s)", res);
97 return -1;
98 }
99
100 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
101 "current AP");
102 if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
103 u8 wpa_ie[80];
104 size_t wpa_ie_len = sizeof(wpa_ie);
105 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
106 wpa_ie, &wpa_ie_len);
107 } else {
108 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
109 }
110
111 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
112 eapol_sm_invalidate_cached_session(wpa_s->eapol);
113 old_ssid = wpa_s->current_ssid;
114 wpa_s->current_ssid = ssid;
115 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
116 wpa_supplicant_initiate_eapol(wpa_s);
117 if (old_ssid != wpa_s->current_ssid)
118 wpas_notify_network_changed(wpa_s);
119
120 return 0;
121 }
122
123
wpa_supplicant_stop_countermeasures(void * eloop_ctx,void * sock_ctx)124 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
125 {
126 struct wpa_supplicant *wpa_s = eloop_ctx;
127
128 if (wpa_s->countermeasures) {
129 wpa_s->countermeasures = 0;
130 wpa_drv_set_countermeasures(wpa_s, 0);
131 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
132 wpa_supplicant_req_scan(wpa_s, 0, 0);
133 }
134 }
135
136
wpa_supplicant_mark_disassoc(struct wpa_supplicant * wpa_s)137 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
138 {
139 int bssid_changed;
140
141 wnm_bss_keep_alive_deinit(wpa_s);
142
143 #ifdef CONFIG_IBSS_RSN
144 ibss_rsn_deinit(wpa_s->ibss_rsn);
145 wpa_s->ibss_rsn = NULL;
146 #endif /* CONFIG_IBSS_RSN */
147
148 #ifdef CONFIG_AP
149 wpa_supplicant_ap_deinit(wpa_s);
150 #endif /* CONFIG_AP */
151
152 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
153 return;
154
155 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
156 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
157 os_memset(wpa_s->bssid, 0, ETH_ALEN);
158 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
159 #ifdef CONFIG_SME
160 wpa_s->sme.prev_bssid_set = 0;
161 #endif /* CONFIG_SME */
162 #ifdef CONFIG_P2P
163 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
164 #endif /* CONFIG_P2P */
165 wpa_s->current_bss = NULL;
166 wpa_s->assoc_freq = 0;
167 #ifdef CONFIG_IEEE80211R
168 #ifdef CONFIG_SME
169 if (wpa_s->sme.ft_ies)
170 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
171 #endif /* CONFIG_SME */
172 #endif /* CONFIG_IEEE80211R */
173
174 if (bssid_changed)
175 wpas_notify_bssid_changed(wpa_s);
176
177 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
178 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
179 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
180 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
181 wpa_s->ap_ies_from_associnfo = 0;
182 wpa_s->current_ssid = NULL;
183 wpa_s->key_mgmt = 0;
184 wpa_s->wnmsleep_used = 0;
185 }
186
187
wpa_find_assoc_pmkid(struct wpa_supplicant * wpa_s)188 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
189 {
190 struct wpa_ie_data ie;
191 int pmksa_set = -1;
192 size_t i;
193
194 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
195 ie.pmkid == NULL)
196 return;
197
198 for (i = 0; i < ie.num_pmkid; i++) {
199 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
200 ie.pmkid + i * PMKID_LEN,
201 NULL, NULL, 0);
202 if (pmksa_set == 0) {
203 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
204 break;
205 }
206 }
207
208 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
209 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
210 }
211
212
wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant * wpa_s,union wpa_event_data * data)213 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
214 union wpa_event_data *data)
215 {
216 if (data == NULL) {
217 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
218 "event");
219 return;
220 }
221 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
222 " index=%d preauth=%d",
223 MAC2STR(data->pmkid_candidate.bssid),
224 data->pmkid_candidate.index,
225 data->pmkid_candidate.preauth);
226
227 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
228 data->pmkid_candidate.index,
229 data->pmkid_candidate.preauth);
230 }
231
232
wpa_supplicant_dynamic_keys(struct wpa_supplicant * wpa_s)233 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
234 {
235 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
236 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
237 return 0;
238
239 #ifdef IEEE8021X_EAPOL
240 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
241 wpa_s->current_ssid &&
242 !(wpa_s->current_ssid->eapol_flags &
243 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
244 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
245 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
246 * plaintext or static WEP keys). */
247 return 0;
248 }
249 #endif /* IEEE8021X_EAPOL */
250
251 return 1;
252 }
253
254
255 /**
256 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
257 * @wpa_s: pointer to wpa_supplicant data
258 * @ssid: Configuration data for the network
259 * Returns: 0 on success, -1 on failure
260 *
261 * This function is called when starting authentication with a network that is
262 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
263 */
wpa_supplicant_scard_init(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid)264 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
265 struct wpa_ssid *ssid)
266 {
267 #ifdef IEEE8021X_EAPOL
268 #ifdef PCSC_FUNCS
269 int aka = 0, sim = 0, type;
270
271 if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
272 return 0;
273
274 if (ssid->eap.eap_methods == NULL) {
275 sim = 1;
276 aka = 1;
277 } else {
278 struct eap_method_type *eap = ssid->eap.eap_methods;
279 while (eap->vendor != EAP_VENDOR_IETF ||
280 eap->method != EAP_TYPE_NONE) {
281 if (eap->vendor == EAP_VENDOR_IETF) {
282 if (eap->method == EAP_TYPE_SIM)
283 sim = 1;
284 else if (eap->method == EAP_TYPE_AKA ||
285 eap->method == EAP_TYPE_AKA_PRIME)
286 aka = 1;
287 }
288 eap++;
289 }
290 }
291
292 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
293 sim = 0;
294 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
295 eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
296 NULL)
297 aka = 0;
298
299 if (!sim && !aka) {
300 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
301 "use SIM, but neither EAP-SIM nor EAP-AKA are "
302 "enabled");
303 return 0;
304 }
305
306 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
307 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
308 if (sim && aka)
309 type = SCARD_TRY_BOTH;
310 else if (aka)
311 type = SCARD_USIM_ONLY;
312 else
313 type = SCARD_GSM_SIM_ONLY;
314
315 wpa_s->scard = scard_init(type, NULL);
316 if (wpa_s->scard == NULL) {
317 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
318 "(pcsc-lite)");
319 return -1;
320 }
321 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
322 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
323 #endif /* PCSC_FUNCS */
324 #endif /* IEEE8021X_EAPOL */
325
326 return 0;
327 }
328
329
330 #ifndef CONFIG_NO_SCAN_PROCESSING
wpa_supplicant_match_privacy(struct wpa_bss * bss,struct wpa_ssid * ssid)331 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
332 struct wpa_ssid *ssid)
333 {
334 int i, privacy = 0;
335
336 if (ssid->mixed_cell)
337 return 1;
338
339 #ifdef CONFIG_WPS
340 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
341 return 1;
342 #endif /* CONFIG_WPS */
343
344 for (i = 0; i < NUM_WEP_KEYS; i++) {
345 if (ssid->wep_key_len[i]) {
346 privacy = 1;
347 break;
348 }
349 }
350 #ifdef IEEE8021X_EAPOL
351 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
352 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
353 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
354 privacy = 1;
355 #endif /* IEEE8021X_EAPOL */
356
357 if (wpa_key_mgmt_wpa(ssid->key_mgmt))
358 privacy = 1;
359
360 if (bss->caps & IEEE80211_CAP_PRIVACY)
361 return privacy;
362 return !privacy;
363 }
364
365
wpa_supplicant_ssid_bss_match(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct wpa_bss * bss)366 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
367 struct wpa_ssid *ssid,
368 struct wpa_bss *bss)
369 {
370 struct wpa_ie_data ie;
371 int proto_match = 0;
372 const u8 *rsn_ie, *wpa_ie;
373 int ret;
374 int wep_ok;
375
376 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
377 if (ret >= 0)
378 return ret;
379
380 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
381 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
382 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
383 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
384 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
385
386 rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
387 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
388 proto_match++;
389
390 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
391 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse "
392 "failed");
393 break;
394 }
395
396 if (wep_ok &&
397 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
398 {
399 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
400 "in RSN IE");
401 return 1;
402 }
403
404 if (!(ie.proto & ssid->proto)) {
405 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto "
406 "mismatch");
407 break;
408 }
409
410 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
411 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK "
412 "cipher mismatch");
413 break;
414 }
415
416 if (!(ie.group_cipher & ssid->group_cipher)) {
417 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK "
418 "cipher mismatch");
419 break;
420 }
421
422 if (!(ie.key_mgmt & ssid->key_mgmt)) {
423 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt "
424 "mismatch");
425 break;
426 }
427
428 #ifdef CONFIG_IEEE80211W
429 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
430 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
431 wpa_s->conf->pmf : ssid->ieee80211w) ==
432 MGMT_FRAME_PROTECTION_REQUIRED) {
433 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt "
434 "frame protection");
435 break;
436 }
437 #endif /* CONFIG_IEEE80211W */
438
439 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE");
440 return 1;
441 }
442
443 wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
444 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
445 proto_match++;
446
447 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
448 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse "
449 "failed");
450 break;
451 }
452
453 if (wep_ok &&
454 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
455 {
456 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN "
457 "in WPA IE");
458 return 1;
459 }
460
461 if (!(ie.proto & ssid->proto)) {
462 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto "
463 "mismatch");
464 break;
465 }
466
467 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
468 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK "
469 "cipher mismatch");
470 break;
471 }
472
473 if (!(ie.group_cipher & ssid->group_cipher)) {
474 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK "
475 "cipher mismatch");
476 break;
477 }
478
479 if (!(ie.key_mgmt & ssid->key_mgmt)) {
480 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt "
481 "mismatch");
482 break;
483 }
484
485 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE");
486 return 1;
487 }
488
489 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
490 !rsn_ie) {
491 wpa_dbg(wpa_s, MSG_DEBUG, " allow for non-WPA IEEE 802.1X");
492 return 1;
493 }
494
495 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
496 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
497 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match");
498 return 0;
499 }
500
501 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
502 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2");
503 return 1;
504 }
505
506 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with "
507 "WPA/WPA2");
508
509 return 0;
510 }
511
512
freq_allowed(int * freqs,int freq)513 static int freq_allowed(int *freqs, int freq)
514 {
515 int i;
516
517 if (freqs == NULL)
518 return 1;
519
520 for (i = 0; freqs[i]; i++)
521 if (freqs[i] == freq)
522 return 1;
523 return 0;
524 }
525
526
ht_supported(const struct hostapd_hw_modes * mode)527 static int ht_supported(const struct hostapd_hw_modes *mode)
528 {
529 if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
530 /*
531 * The driver did not indicate whether it supports HT. Assume
532 * it does to avoid connection issues.
533 */
534 return 1;
535 }
536
537 /*
538 * IEEE Std 802.11n-2009 20.1.1:
539 * An HT non-AP STA shall support all EQM rates for one spatial stream.
540 */
541 return mode->mcs_set[0] == 0xff;
542 }
543
544
rate_match(struct wpa_supplicant * wpa_s,struct wpa_bss * bss)545 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
546 {
547 const struct hostapd_hw_modes *mode = NULL, *modes;
548 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
549 const u8 *rate_ie;
550 int i, j, k;
551
552 if (bss->freq == 0)
553 return 1; /* Cannot do matching without knowing band */
554
555 modes = wpa_s->hw.modes;
556 if (modes == NULL) {
557 /*
558 * The driver does not provide any additional information
559 * about the utilized hardware, so allow the connection attempt
560 * to continue.
561 */
562 return 1;
563 }
564
565 for (i = 0; i < wpa_s->hw.num_modes; i++) {
566 for (j = 0; j < modes[i].num_channels; j++) {
567 int freq = modes[i].channels[j].freq;
568 if (freq == bss->freq) {
569 if (mode &&
570 mode->mode == HOSTAPD_MODE_IEEE80211G)
571 break; /* do not allow 802.11b replace
572 * 802.11g */
573 mode = &modes[i];
574 break;
575 }
576 }
577 }
578
579 if (mode == NULL)
580 return 0;
581
582 for (i = 0; i < (int) sizeof(scan_ie); i++) {
583 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
584 if (rate_ie == NULL)
585 continue;
586
587 for (j = 2; j < rate_ie[1] + 2; j++) {
588 int flagged = !!(rate_ie[j] & 0x80);
589 int r = (rate_ie[j] & 0x7f) * 5;
590
591 /*
592 * IEEE Std 802.11n-2009 7.3.2.2:
593 * The new BSS Membership selector value is encoded
594 * like a legacy basic rate, but it is not a rate and
595 * only indicates if the BSS members are required to
596 * support the mandatory features of Clause 20 [HT PHY]
597 * in order to join the BSS.
598 */
599 if (flagged && ((rate_ie[j] & 0x7f) ==
600 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
601 if (!ht_supported(mode)) {
602 wpa_dbg(wpa_s, MSG_DEBUG,
603 " hardware does not support "
604 "HT PHY");
605 return 0;
606 }
607 continue;
608 }
609
610 if (!flagged)
611 continue;
612
613 /* check for legacy basic rates */
614 for (k = 0; k < mode->num_rates; k++) {
615 if (mode->rates[k] == r)
616 break;
617 }
618 if (k == mode->num_rates) {
619 /*
620 * IEEE Std 802.11-2007 7.3.2.2 demands that in
621 * order to join a BSS all required rates
622 * have to be supported by the hardware.
623 */
624 wpa_dbg(wpa_s, MSG_DEBUG, " hardware does "
625 "not support required rate %d.%d Mbps",
626 r / 10, r % 10);
627 return 0;
628 }
629 }
630 }
631
632 return 1;
633 }
634
635
wpa_scan_res_match(struct wpa_supplicant * wpa_s,int i,struct wpa_bss * bss,struct wpa_ssid * group)636 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
637 int i, struct wpa_bss *bss,
638 struct wpa_ssid *group)
639 {
640 u8 wpa_ie_len, rsn_ie_len;
641 int wpa;
642 struct wpa_blacklist *e;
643 const u8 *ie;
644 struct wpa_ssid *ssid;
645
646 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
647 wpa_ie_len = ie ? ie[1] : 0;
648
649 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
650 rsn_ie_len = ie ? ie[1] : 0;
651
652 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
653 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
654 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
655 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
656 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
657
658 e = wpa_blacklist_get(wpa_s, bss->bssid);
659 if (e) {
660 int limit = 1;
661 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
662 /*
663 * When only a single network is enabled, we can
664 * trigger blacklisting on the first failure. This
665 * should not be done with multiple enabled networks to
666 * avoid getting forced to move into a worse ESS on
667 * single error if there are no other BSSes of the
668 * current ESS.
669 */
670 limit = 0;
671 }
672 if (e->count > limit) {
673 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
674 "(count=%d limit=%d)", e->count, limit);
675 return NULL;
676 }
677 }
678
679 if (bss->ssid_len == 0) {
680 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known");
681 return NULL;
682 }
683
684 if (disallowed_bssid(wpa_s, bss->bssid)) {
685 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed");
686 return NULL;
687 }
688
689 if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
690 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed");
691 return NULL;
692 }
693
694 wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
695
696 for (ssid = group; ssid; ssid = ssid->pnext) {
697 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
698 int res;
699
700 if (wpas_network_disabled(wpa_s, ssid)) {
701 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled");
702 continue;
703 }
704
705 res = wpas_temp_disabled(wpa_s, ssid);
706 if (res > 0) {
707 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled "
708 "temporarily for %d second(s)", res);
709 continue;
710 }
711
712 #ifdef CONFIG_WPS
713 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
714 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted "
715 "(WPS)");
716 continue;
717 }
718
719 if (wpa && ssid->ssid_len == 0 &&
720 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
721 check_ssid = 0;
722
723 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
724 /* Only allow wildcard SSID match if an AP
725 * advertises active WPS operation that matches
726 * with our mode. */
727 check_ssid = 1;
728 if (ssid->ssid_len == 0 &&
729 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
730 check_ssid = 0;
731 }
732 #endif /* CONFIG_WPS */
733
734 if (ssid->bssid_set && ssid->ssid_len == 0 &&
735 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
736 check_ssid = 0;
737
738 if (check_ssid &&
739 (bss->ssid_len != ssid->ssid_len ||
740 os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
741 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch");
742 continue;
743 }
744
745 if (ssid->bssid_set &&
746 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
747 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch");
748 continue;
749 }
750
751 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
752 continue;
753
754 if (!wpa &&
755 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
756 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
757 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
758 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network "
759 "not allowed");
760 continue;
761 }
762
763 if (!wpa_supplicant_match_privacy(bss, ssid)) {
764 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy "
765 "mismatch");
766 continue;
767 }
768
769 if (bss->caps & IEEE80211_CAP_IBSS) {
770 wpa_dbg(wpa_s, MSG_DEBUG, " skip - IBSS (adhoc) "
771 "network");
772 continue;
773 }
774
775 if (!freq_allowed(ssid->freq_list, bss->freq)) {
776 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not "
777 "allowed");
778 continue;
779 }
780
781 if (!rate_match(wpa_s, bss)) {
782 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do "
783 "not match");
784 continue;
785 }
786
787 #ifdef CONFIG_P2P
788 /*
789 * TODO: skip the AP if its P2P IE has Group Formation
790 * bit set in the P2P Group Capability Bitmap and we
791 * are not in Group Formation with that device.
792 */
793 #endif /* CONFIG_P2P */
794
795 /* Matching configuration found */
796 return ssid;
797 }
798
799 /* No matching configuration found */
800 return NULL;
801 }
802
803
804 static struct wpa_bss *
wpa_supplicant_select_bss(struct wpa_supplicant * wpa_s,struct wpa_ssid * group,struct wpa_ssid ** selected_ssid)805 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
806 struct wpa_ssid *group,
807 struct wpa_ssid **selected_ssid)
808 {
809 unsigned int i;
810
811 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
812 group->priority);
813
814 for (i = 0; i < wpa_s->last_scan_res_used; i++) {
815 struct wpa_bss *bss = wpa_s->last_scan_res[i];
816 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
817 if (!*selected_ssid)
818 continue;
819 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR
820 " ssid='%s'",
821 MAC2STR(bss->bssid),
822 wpa_ssid_txt(bss->ssid, bss->ssid_len));
823 return bss;
824 }
825
826 return NULL;
827 }
828
829
830 static struct wpa_bss *
wpa_supplicant_pick_network(struct wpa_supplicant * wpa_s,struct wpa_ssid ** selected_ssid)831 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
832 struct wpa_ssid **selected_ssid)
833 {
834 struct wpa_bss *selected = NULL;
835 int prio;
836
837 if (wpa_s->last_scan_res == NULL ||
838 wpa_s->last_scan_res_used == 0)
839 return NULL; /* no scan results from last update */
840
841 while (selected == NULL) {
842 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
843 selected = wpa_supplicant_select_bss(
844 wpa_s, wpa_s->conf->pssid[prio],
845 selected_ssid);
846 if (selected)
847 break;
848 }
849
850 if (selected == NULL && wpa_s->blacklist &&
851 !wpa_s->countermeasures) {
852 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
853 "blacklist and try again");
854 wpa_blacklist_clear(wpa_s);
855 wpa_s->blacklist_cleared++;
856 } else if (selected == NULL)
857 break;
858 }
859
860 return selected;
861 }
862
863
wpa_supplicant_req_new_scan(struct wpa_supplicant * wpa_s,int timeout_sec,int timeout_usec)864 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
865 int timeout_sec, int timeout_usec)
866 {
867 if (!wpa_supplicant_enabled_networks(wpa_s)) {
868 /*
869 * No networks are enabled; short-circuit request so
870 * we don't wait timeout seconds before transitioning
871 * to INACTIVE state.
872 */
873 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
874 "since there are no enabled networks");
875 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
876 #ifdef CONFIG_P2P
877 wpa_s->sta_scan_pending = 0;
878 #endif /* CONFIG_P2P */
879 return;
880 }
881
882 wpa_s->scan_for_connection = 1;
883 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
884 }
885
886
wpa_supplicant_connect(struct wpa_supplicant * wpa_s,struct wpa_bss * selected,struct wpa_ssid * ssid)887 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
888 struct wpa_bss *selected,
889 struct wpa_ssid *ssid)
890 {
891 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
892 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
893 "PBC session overlap");
894 #ifdef CONFIG_P2P
895 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
896 return -1;
897 #endif /* CONFIG_P2P */
898
899 #ifdef CONFIG_WPS
900 wpas_wps_cancel(wpa_s);
901 #endif /* CONFIG_WPS */
902 return -1;
903 }
904
905 /*
906 * Do not trigger new association unless the BSSID has changed or if
907 * reassociation is requested. If we are in process of associating with
908 * the selected BSSID, do not trigger new attempt.
909 */
910 if (wpa_s->reassociate ||
911 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
912 ((wpa_s->wpa_state != WPA_ASSOCIATING &&
913 wpa_s->wpa_state != WPA_AUTHENTICATING) ||
914 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
915 0))) {
916 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
917 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
918 return 0;
919 }
920 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
921 "reassociate: %d selected: "MACSTR " bssid: " MACSTR
922 " pending: " MACSTR " wpa_state: %s",
923 wpa_s->reassociate, MAC2STR(selected->bssid),
924 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
925 wpa_supplicant_state_txt(wpa_s->wpa_state));
926 wpa_supplicant_associate(wpa_s, selected, ssid);
927 } else {
928 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
929 "selected AP");
930 }
931
932 return 0;
933 }
934
935
936 static struct wpa_ssid *
wpa_supplicant_pick_new_network(struct wpa_supplicant * wpa_s)937 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
938 {
939 int prio;
940 struct wpa_ssid *ssid;
941
942 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
943 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
944 {
945 if (wpas_network_disabled(wpa_s, ssid))
946 continue;
947 if (ssid->mode == IEEE80211_MODE_IBSS ||
948 ssid->mode == IEEE80211_MODE_AP)
949 return ssid;
950 }
951 }
952 return NULL;
953 }
954
955
956 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
957 * on BSS added and BSS changed events */
wpa_supplicant_rsn_preauth_scan_results(struct wpa_supplicant * wpa_s)958 static void wpa_supplicant_rsn_preauth_scan_results(
959 struct wpa_supplicant *wpa_s)
960 {
961 struct wpa_bss *bss;
962
963 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
964 return;
965
966 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
967 const u8 *ssid, *rsn;
968
969 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
970 if (ssid == NULL)
971 continue;
972
973 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
974 if (rsn == NULL)
975 continue;
976
977 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
978 }
979
980 }
981
982
wpa_supplicant_need_to_roam(struct wpa_supplicant * wpa_s,struct wpa_bss * selected,struct wpa_ssid * ssid)983 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
984 struct wpa_bss *selected,
985 struct wpa_ssid *ssid)
986 {
987 struct wpa_bss *current_bss = NULL;
988 int min_diff;
989
990 if (wpa_s->reassociate)
991 return 1; /* explicit request to reassociate */
992 if (wpa_s->wpa_state < WPA_ASSOCIATED)
993 return 1; /* we are not associated; continue */
994 if (wpa_s->current_ssid == NULL)
995 return 1; /* unknown current SSID */
996 if (wpa_s->current_ssid != ssid)
997 return 1; /* different network block */
998
999 if (wpas_driver_bss_selection(wpa_s))
1000 return 0; /* Driver-based roaming */
1001
1002 if (wpa_s->current_ssid->ssid)
1003 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1004 wpa_s->current_ssid->ssid,
1005 wpa_s->current_ssid->ssid_len);
1006 if (!current_bss)
1007 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1008
1009 if (!current_bss)
1010 return 1; /* current BSS not seen in scan results */
1011
1012 if (current_bss == selected)
1013 return 0;
1014
1015 if (selected->last_update_idx > current_bss->last_update_idx)
1016 return 1; /* current BSS not seen in the last scan */
1017
1018 #ifndef CONFIG_NO_ROAMING
1019 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1020 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1021 MAC2STR(current_bss->bssid), current_bss->level);
1022 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1023 MAC2STR(selected->bssid), selected->level);
1024
1025 if (wpa_s->current_ssid->bssid_set &&
1026 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1027 0) {
1028 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1029 "has preferred BSSID");
1030 return 1;
1031 }
1032
1033 if (current_bss->level < 0 && current_bss->level > selected->level) {
1034 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1035 "signal level");
1036 return 0;
1037 }
1038
1039 min_diff = 2;
1040 if (current_bss->level < 0) {
1041 if (current_bss->level < -85)
1042 min_diff = 1;
1043 else if (current_bss->level < -80)
1044 min_diff = 2;
1045 else if (current_bss->level < -75)
1046 min_diff = 3;
1047 else if (current_bss->level < -70)
1048 min_diff = 4;
1049 else
1050 min_diff = 5;
1051 }
1052 if (abs(current_bss->level - selected->level) < min_diff) {
1053 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1054 "in signal level");
1055 return 0;
1056 }
1057
1058 return 1;
1059 #else /* CONFIG_NO_ROAMING */
1060 return 0;
1061 #endif /* CONFIG_NO_ROAMING */
1062 }
1063
1064
1065 /* Return != 0 if no scan results could be fetched or if scan results should not
1066 * be shared with other virtual interfaces. */
_wpa_supplicant_event_scan_results(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1067 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1068 union wpa_event_data *data)
1069 {
1070 struct wpa_scan_results *scan_res;
1071 int ap = 0;
1072 #ifndef CONFIG_NO_RANDOM_POOL
1073 size_t i, num;
1074 #endif /* CONFIG_NO_RANDOM_POOL */
1075
1076 #ifdef CONFIG_AP
1077 if (wpa_s->ap_iface)
1078 ap = 1;
1079 #endif /* CONFIG_AP */
1080
1081 wpa_supplicant_notify_scanning(wpa_s, 0);
1082
1083 #ifdef CONFIG_P2P
1084 if (wpa_s->global->p2p_cb_on_scan_complete &&
1085 !wpa_s->global->p2p_disabled &&
1086 wpa_s->global->p2p != NULL && !wpa_s->sta_scan_pending &&
1087 !wpa_s->scan_res_handler) {
1088 wpa_s->global->p2p_cb_on_scan_complete = 0;
1089 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
1090 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
1091 "stopped scan processing");
1092 wpa_s->sta_scan_pending = 1;
1093 wpa_supplicant_req_scan(wpa_s, 5, 0);
1094 return -1;
1095 }
1096 }
1097 wpa_s->sta_scan_pending = 0;
1098 #endif /* CONFIG_P2P */
1099
1100 scan_res = wpa_supplicant_get_scan_results(wpa_s,
1101 data ? &data->scan_info :
1102 NULL, 1);
1103 if (scan_res == NULL) {
1104 if (wpa_s->conf->ap_scan == 2 || ap)
1105 return -1;
1106 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1107 "scanning again");
1108 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1109 return -1;
1110 }
1111
1112 #ifndef CONFIG_NO_RANDOM_POOL
1113 num = scan_res->num;
1114 if (num > 10)
1115 num = 10;
1116 for (i = 0; i < num; i++) {
1117 u8 buf[5];
1118 struct wpa_scan_res *res = scan_res->res[i];
1119 buf[0] = res->bssid[5];
1120 buf[1] = res->qual & 0xff;
1121 buf[2] = res->noise & 0xff;
1122 buf[3] = res->level & 0xff;
1123 buf[4] = res->tsf & 0xff;
1124 random_add_randomness(buf, sizeof(buf));
1125 }
1126 #endif /* CONFIG_NO_RANDOM_POOL */
1127
1128 if (wpa_s->scan_res_handler) {
1129 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1130 struct wpa_scan_results *scan_res);
1131
1132 scan_res_handler = wpa_s->scan_res_handler;
1133 wpa_s->scan_res_handler = NULL;
1134 scan_res_handler(wpa_s, scan_res);
1135
1136 wpa_scan_results_free(scan_res);
1137 return -2;
1138 }
1139
1140 if (ap) {
1141 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1142 #ifdef CONFIG_AP
1143 if (wpa_s->ap_iface->scan_cb)
1144 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1145 #endif /* CONFIG_AP */
1146 wpa_scan_results_free(scan_res);
1147 return 0;
1148 }
1149
1150 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1151 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1152 wpas_notify_scan_results(wpa_s);
1153
1154 wpas_notify_scan_done(wpa_s, 1);
1155
1156 if (sme_proc_obss_scan(wpa_s) > 0) {
1157 wpa_scan_results_free(scan_res);
1158 return 0;
1159 }
1160
1161 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
1162 wpa_scan_results_free(scan_res);
1163 return 0;
1164 }
1165
1166 if (autoscan_notify_scan(wpa_s, scan_res)) {
1167 wpa_scan_results_free(scan_res);
1168 return 0;
1169 }
1170
1171 if (wpa_s->disconnected) {
1172 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1173 wpa_scan_results_free(scan_res);
1174 return 0;
1175 }
1176
1177 if (!wpas_driver_bss_selection(wpa_s) &&
1178 bgscan_notify_scan(wpa_s, scan_res) == 1) {
1179 wpa_scan_results_free(scan_res);
1180 return 0;
1181 }
1182
1183 wpas_wps_update_ap_info(wpa_s, scan_res);
1184
1185 wpa_scan_results_free(scan_res);
1186
1187 return wpas_select_network_from_last_scan(wpa_s);
1188 }
1189
1190
wpas_select_network_from_last_scan(struct wpa_supplicant * wpa_s)1191 int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s)
1192 {
1193 struct wpa_bss *selected;
1194 struct wpa_ssid *ssid = NULL;
1195
1196 selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1197
1198 if (selected) {
1199 int skip;
1200 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1201 if (skip) {
1202 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1203 return 0;
1204 }
1205
1206 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1207 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1208 return -1;
1209 }
1210 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1211 /*
1212 * Do not notify other virtual radios of scan results since we do not
1213 * want them to start other associations at the same time.
1214 */
1215 return 1;
1216 } else {
1217 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1218 ssid = wpa_supplicant_pick_new_network(wpa_s);
1219 if (ssid) {
1220 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1221 wpa_supplicant_associate(wpa_s, NULL, ssid);
1222 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1223 } else {
1224 int timeout_sec = wpa_s->scan_interval;
1225 int timeout_usec = 0;
1226 #ifdef CONFIG_P2P
1227 if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1228 return 0;
1229
1230 if (wpa_s->p2p_in_provisioning) {
1231 /*
1232 * Use shorter wait during P2P Provisioning
1233 * state to speed up group formation.
1234 */
1235 timeout_sec = 0;
1236 timeout_usec = 250000;
1237 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1238 timeout_usec);
1239 return 0;
1240 }
1241 #endif /* CONFIG_P2P */
1242 #ifdef CONFIG_INTERWORKING
1243 if (wpa_s->conf->auto_interworking &&
1244 wpa_s->conf->interworking &&
1245 wpa_s->conf->cred) {
1246 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1247 "start ANQP fetch since no matching "
1248 "networks found");
1249 wpa_s->network_select = 1;
1250 wpa_s->auto_network_select = 1;
1251 interworking_start_fetch_anqp(wpa_s);
1252 return 1;
1253 }
1254 #endif /* CONFIG_INTERWORKING */
1255 if (wpa_supplicant_req_sched_scan(wpa_s))
1256 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1257 timeout_usec);
1258 }
1259 }
1260 return 0;
1261 }
1262
1263
wpa_supplicant_event_scan_results(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1264 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1265 union wpa_event_data *data)
1266 {
1267 const char *rn, *rn2;
1268 struct wpa_supplicant *ifs;
1269
1270 if (_wpa_supplicant_event_scan_results(wpa_s, data) != 0) {
1271 /*
1272 * If no scan results could be fetched, then no need to
1273 * notify those interfaces that did not actually request
1274 * this scan. Similarly, if scan results started a new operation on this
1275 * interface, do not notify other interfaces to avoid concurrent
1276 * operations during a connection attempt.
1277 */
1278 return;
1279 }
1280
1281 /*
1282 * Check other interfaces to see if they have the same radio-name. If
1283 * so, they get updated with this same scan info.
1284 */
1285 if (!wpa_s->driver->get_radio_name)
1286 return;
1287
1288 rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1289 if (rn == NULL || rn[0] == '\0')
1290 return;
1291
1292 wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1293 "sharing same radio (%s) in event_scan_results", rn);
1294
1295 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1296 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1297 continue;
1298
1299 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1300 if (rn2 && os_strcmp(rn, rn2) == 0) {
1301 wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1302 "sibling", ifs->ifname);
1303 _wpa_supplicant_event_scan_results(ifs, data);
1304 }
1305 }
1306 }
1307
1308 #endif /* CONFIG_NO_SCAN_PROCESSING */
1309
1310
1311 #ifdef CONFIG_WNM
1312
wnm_bss_keep_alive(void * eloop_ctx,void * sock_ctx)1313 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1314 {
1315 struct wpa_supplicant *wpa_s = eloop_ctx;
1316
1317 if (wpa_s->wpa_state < WPA_ASSOCIATED)
1318 return;
1319
1320 if (!wpa_s->no_keep_alive) {
1321 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1322 MAC2STR(wpa_s->bssid));
1323 /* TODO: could skip this if normal data traffic has been sent */
1324 /* TODO: Consider using some more appropriate data frame for
1325 * this */
1326 if (wpa_s->l2)
1327 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1328 (u8 *) "", 0);
1329 }
1330
1331 #ifdef CONFIG_SME
1332 if (wpa_s->sme.bss_max_idle_period) {
1333 unsigned int msec;
1334 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1335 if (msec > 100)
1336 msec -= 100;
1337 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1338 wnm_bss_keep_alive, wpa_s, NULL);
1339 }
1340 #endif /* CONFIG_SME */
1341 }
1342
1343
wnm_process_assoc_resp(struct wpa_supplicant * wpa_s,const u8 * ies,size_t ies_len)1344 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1345 const u8 *ies, size_t ies_len)
1346 {
1347 struct ieee802_11_elems elems;
1348
1349 if (ies == NULL)
1350 return;
1351
1352 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1353 return;
1354
1355 #ifdef CONFIG_SME
1356 if (elems.bss_max_idle_period) {
1357 unsigned int msec;
1358 wpa_s->sme.bss_max_idle_period =
1359 WPA_GET_LE16(elems.bss_max_idle_period);
1360 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1361 "TU)%s", wpa_s->sme.bss_max_idle_period,
1362 (elems.bss_max_idle_period[2] & 0x01) ?
1363 " (protected keep-live required)" : "");
1364 if (wpa_s->sme.bss_max_idle_period == 0)
1365 wpa_s->sme.bss_max_idle_period = 1;
1366 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1367 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1368 /* msec times 1000 */
1369 msec = wpa_s->sme.bss_max_idle_period * 1024;
1370 if (msec > 100)
1371 msec -= 100;
1372 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1373 wnm_bss_keep_alive, wpa_s,
1374 NULL);
1375 }
1376 }
1377 #endif /* CONFIG_SME */
1378 }
1379
1380 #endif /* CONFIG_WNM */
1381
1382
wnm_bss_keep_alive_deinit(struct wpa_supplicant * wpa_s)1383 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1384 {
1385 #ifdef CONFIG_WNM
1386 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1387 #endif /* CONFIG_WNM */
1388 }
1389
1390
wpa_supplicant_event_associnfo(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1391 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1392 union wpa_event_data *data)
1393 {
1394 int l, len, found = 0, wpa_found, rsn_found;
1395 const u8 *p;
1396
1397 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1398 if (data->assoc_info.req_ies)
1399 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1400 data->assoc_info.req_ies_len);
1401 if (data->assoc_info.resp_ies) {
1402 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1403 data->assoc_info.resp_ies_len);
1404 #ifdef CONFIG_TDLS
1405 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1406 data->assoc_info.resp_ies_len);
1407 #endif /* CONFIG_TDLS */
1408 #ifdef CONFIG_WNM
1409 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1410 data->assoc_info.resp_ies_len);
1411 #endif /* CONFIG_WNM */
1412 }
1413 if (data->assoc_info.beacon_ies)
1414 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1415 data->assoc_info.beacon_ies,
1416 data->assoc_info.beacon_ies_len);
1417 if (data->assoc_info.freq)
1418 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1419 data->assoc_info.freq);
1420
1421 p = data->assoc_info.req_ies;
1422 l = data->assoc_info.req_ies_len;
1423
1424 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1425 while (p && l >= 2) {
1426 len = p[1] + 2;
1427 if (len > l) {
1428 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1429 p, l);
1430 break;
1431 }
1432 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1433 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1434 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1435 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1436 break;
1437 found = 1;
1438 wpa_find_assoc_pmkid(wpa_s);
1439 break;
1440 }
1441 l -= len;
1442 p += len;
1443 }
1444 if (!found && data->assoc_info.req_ies)
1445 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1446
1447 #ifdef CONFIG_IEEE80211R
1448 #ifdef CONFIG_SME
1449 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1450 u8 bssid[ETH_ALEN];
1451 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1452 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1453 data->assoc_info.resp_ies,
1454 data->assoc_info.resp_ies_len,
1455 bssid) < 0) {
1456 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1457 "Reassociation Response failed");
1458 wpa_supplicant_deauthenticate(
1459 wpa_s, WLAN_REASON_INVALID_IE);
1460 return -1;
1461 }
1462 }
1463
1464 p = data->assoc_info.resp_ies;
1465 l = data->assoc_info.resp_ies_len;
1466
1467 #ifdef CONFIG_WPS_STRICT
1468 if (p && wpa_s->current_ssid &&
1469 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1470 struct wpabuf *wps;
1471 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1472 if (wps == NULL) {
1473 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1474 "include WPS IE in (Re)Association Response");
1475 return -1;
1476 }
1477
1478 if (wps_validate_assoc_resp(wps) < 0) {
1479 wpabuf_free(wps);
1480 wpa_supplicant_deauthenticate(
1481 wpa_s, WLAN_REASON_INVALID_IE);
1482 return -1;
1483 }
1484 wpabuf_free(wps);
1485 }
1486 #endif /* CONFIG_WPS_STRICT */
1487
1488 /* Go through the IEs and make a copy of the MDIE, if present. */
1489 while (p && l >= 2) {
1490 len = p[1] + 2;
1491 if (len > l) {
1492 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1493 p, l);
1494 break;
1495 }
1496 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1497 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1498 wpa_s->sme.ft_used = 1;
1499 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1500 MOBILITY_DOMAIN_ID_LEN);
1501 break;
1502 }
1503 l -= len;
1504 p += len;
1505 }
1506 #endif /* CONFIG_SME */
1507
1508 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1509 data->assoc_info.resp_ies_len);
1510 #endif /* CONFIG_IEEE80211R */
1511
1512 /* WPA/RSN IE from Beacon/ProbeResp */
1513 p = data->assoc_info.beacon_ies;
1514 l = data->assoc_info.beacon_ies_len;
1515
1516 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1517 */
1518 wpa_found = rsn_found = 0;
1519 while (p && l >= 2) {
1520 len = p[1] + 2;
1521 if (len > l) {
1522 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1523 p, l);
1524 break;
1525 }
1526 if (!wpa_found &&
1527 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1528 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1529 wpa_found = 1;
1530 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1531 }
1532
1533 if (!rsn_found &&
1534 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1535 rsn_found = 1;
1536 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1537 }
1538
1539 l -= len;
1540 p += len;
1541 }
1542
1543 if (!wpa_found && data->assoc_info.beacon_ies)
1544 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1545 if (!rsn_found && data->assoc_info.beacon_ies)
1546 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1547 if (wpa_found || rsn_found)
1548 wpa_s->ap_ies_from_associnfo = 1;
1549
1550 if (wpa_s->assoc_freq && data->assoc_info.freq &&
1551 wpa_s->assoc_freq != data->assoc_info.freq) {
1552 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1553 "%u to %u MHz",
1554 wpa_s->assoc_freq, data->assoc_info.freq);
1555 wpa_supplicant_update_scan_results(wpa_s);
1556 }
1557
1558 wpa_s->assoc_freq = data->assoc_info.freq;
1559
1560 return 0;
1561 }
1562
1563
wpa_supplicant_get_new_bss(struct wpa_supplicant * wpa_s,const u8 * bssid)1564 static struct wpa_bss * wpa_supplicant_get_new_bss(
1565 struct wpa_supplicant *wpa_s, const u8 *bssid)
1566 {
1567 struct wpa_bss *bss = NULL;
1568 struct wpa_ssid *ssid = wpa_s->current_ssid;
1569
1570 if (ssid->ssid_len > 0)
1571 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
1572 if (!bss)
1573 bss = wpa_bss_get_bssid(wpa_s, bssid);
1574
1575 return bss;
1576 }
1577
1578
wpa_supplicant_assoc_update_ie(struct wpa_supplicant * wpa_s)1579 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1580 {
1581 const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1582
1583 if (!wpa_s->current_bss || !wpa_s->current_ssid)
1584 return -1;
1585
1586 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1587 return 0;
1588
1589 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1590 WPA_IE_VENDOR_TYPE);
1591 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1592
1593 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1594 bss_wpa ? 2 + bss_wpa[1] : 0) ||
1595 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1596 bss_rsn ? 2 + bss_rsn[1] : 0))
1597 return -1;
1598
1599 return 0;
1600 }
1601
1602
wpa_supplicant_event_assoc(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1603 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1604 union wpa_event_data *data)
1605 {
1606 u8 bssid[ETH_ALEN];
1607 int ft_completed;
1608 struct wpa_driver_capa capa;
1609
1610 #ifdef CONFIG_AP
1611 if (wpa_s->ap_iface) {
1612 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1613 data->assoc_info.addr,
1614 data->assoc_info.req_ies,
1615 data->assoc_info.req_ies_len,
1616 data->assoc_info.reassoc);
1617 return;
1618 }
1619 #endif /* CONFIG_AP */
1620
1621 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1622 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1623 return;
1624
1625 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1626 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1627 wpa_supplicant_deauthenticate(
1628 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1629 return;
1630 }
1631
1632 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1633 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1634 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1635 MACSTR, MAC2STR(bssid));
1636 random_add_randomness(bssid, ETH_ALEN);
1637 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1638 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1639 wpas_notify_bssid_changed(wpa_s);
1640
1641 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1642 wpa_clear_keys(wpa_s, bssid);
1643 }
1644 if (wpa_supplicant_select_config(wpa_s) < 0) {
1645 wpa_supplicant_deauthenticate(
1646 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1647 return;
1648 }
1649 if (wpa_s->current_ssid) {
1650 struct wpa_bss *bss = NULL;
1651
1652 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1653 if (!bss) {
1654 wpa_supplicant_update_scan_results(wpa_s);
1655
1656 /* Get the BSS from the new scan results */
1657 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1658 }
1659
1660 if (bss)
1661 wpa_s->current_bss = bss;
1662 }
1663
1664 if (wpa_s->conf->ap_scan == 1 &&
1665 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1666 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1667 wpa_msg(wpa_s, MSG_WARNING,
1668 "WPA/RSN IEs not updated");
1669 }
1670 }
1671
1672 #ifdef CONFIG_SME
1673 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1674 wpa_s->sme.prev_bssid_set = 1;
1675 #endif /* CONFIG_SME */
1676
1677 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1678 if (wpa_s->current_ssid) {
1679 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1680 * initialized before association, but for other modes,
1681 * initialize PC/SC here, if the current configuration needs
1682 * smartcard or SIM/USIM. */
1683 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1684 }
1685 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1686 if (wpa_s->l2)
1687 l2_packet_notify_auth_start(wpa_s->l2);
1688
1689 /*
1690 * Set portEnabled first to FALSE in order to get EAP state machine out
1691 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1692 * state machine may transit to AUTHENTICATING state based on obsolete
1693 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1694 * AUTHENTICATED without ever giving chance to EAP state machine to
1695 * reset the state.
1696 */
1697 if (!ft_completed) {
1698 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1699 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1700 }
1701 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1702 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1703 /* 802.1X::portControl = Auto */
1704 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1705 wpa_s->eapol_received = 0;
1706 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1707 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1708 (wpa_s->current_ssid &&
1709 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1710 wpa_supplicant_cancel_auth_timeout(wpa_s);
1711 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1712 } else if (!ft_completed) {
1713 /* Timeout for receiving the first EAPOL packet */
1714 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1715 }
1716 wpa_supplicant_cancel_scan(wpa_s);
1717
1718 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1719 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1720 /*
1721 * We are done; the driver will take care of RSN 4-way
1722 * handshake.
1723 */
1724 wpa_supplicant_cancel_auth_timeout(wpa_s);
1725 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1726 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1727 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1728 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1729 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1730 /*
1731 * The driver will take care of RSN 4-way handshake, so we need
1732 * to allow EAPOL supplicant to complete its work without
1733 * waiting for WPA supplicant.
1734 */
1735 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1736 } else if (ft_completed) {
1737 /*
1738 * FT protocol completed - make sure EAPOL state machine ends
1739 * up in authenticated.
1740 */
1741 wpa_supplicant_cancel_auth_timeout(wpa_s);
1742 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1743 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1744 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1745 }
1746
1747 wpa_s->last_eapol_matches_bssid = 0;
1748
1749 if (wpa_s->pending_eapol_rx) {
1750 struct os_time now, age;
1751 os_get_time(&now);
1752 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1753 if (age.sec == 0 && age.usec < 100000 &&
1754 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1755 0) {
1756 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1757 "frame that was received just before "
1758 "association notification");
1759 wpa_supplicant_rx_eapol(
1760 wpa_s, wpa_s->pending_eapol_rx_src,
1761 wpabuf_head(wpa_s->pending_eapol_rx),
1762 wpabuf_len(wpa_s->pending_eapol_rx));
1763 }
1764 wpabuf_free(wpa_s->pending_eapol_rx);
1765 wpa_s->pending_eapol_rx = NULL;
1766 }
1767
1768 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1769 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1770 wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1771 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1772 /* Set static WEP keys again */
1773 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1774 }
1775
1776 #ifdef CONFIG_IBSS_RSN
1777 if (wpa_s->current_ssid &&
1778 wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1779 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1780 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1781 wpa_s->ibss_rsn == NULL) {
1782 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1783 if (!wpa_s->ibss_rsn) {
1784 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1785 wpa_supplicant_deauthenticate(
1786 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1787 return;
1788 }
1789
1790 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1791 }
1792 #endif /* CONFIG_IBSS_RSN */
1793
1794 wpas_wps_notify_assoc(wpa_s, bssid);
1795 }
1796
1797
disconnect_reason_recoverable(u16 reason_code)1798 static int disconnect_reason_recoverable(u16 reason_code)
1799 {
1800 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
1801 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
1802 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
1803 }
1804
1805
wpa_supplicant_event_disassoc(struct wpa_supplicant * wpa_s,u16 reason_code,int locally_generated)1806 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1807 u16 reason_code,
1808 int locally_generated)
1809 {
1810 const u8 *bssid;
1811
1812 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1813 /*
1814 * At least Host AP driver and a Prism3 card seemed to be
1815 * generating streams of disconnected events when configuring
1816 * IBSS for WPA-None. Ignore them for now.
1817 */
1818 return;
1819 }
1820
1821 bssid = wpa_s->bssid;
1822 if (is_zero_ether_addr(bssid))
1823 bssid = wpa_s->pending_bssid;
1824
1825 if (!is_zero_ether_addr(bssid) ||
1826 wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1827 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1828 " reason=%d%s",
1829 MAC2STR(bssid), reason_code,
1830 locally_generated ? " locally_generated=1" : "");
1831 }
1832 }
1833
1834
could_be_psk_mismatch(struct wpa_supplicant * wpa_s,u16 reason_code,int locally_generated)1835 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
1836 int locally_generated)
1837 {
1838 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
1839 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
1840 return 0; /* Not in 4-way handshake with PSK */
1841
1842 /*
1843 * It looks like connection was lost while trying to go through PSK
1844 * 4-way handshake. Filter out known disconnection cases that are caused
1845 * by something else than PSK mismatch to avoid confusing reports.
1846 */
1847
1848 if (locally_generated) {
1849 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
1850 return 0;
1851 }
1852
1853 return 1;
1854 }
1855
1856
wpa_supplicant_event_disassoc_finish(struct wpa_supplicant * wpa_s,u16 reason_code,int locally_generated)1857 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
1858 u16 reason_code,
1859 int locally_generated)
1860 {
1861 const u8 *bssid;
1862 int authenticating;
1863 u8 prev_pending_bssid[ETH_ALEN];
1864 struct wpa_bss *fast_reconnect = NULL;
1865 struct wpa_ssid *fast_reconnect_ssid = NULL;
1866 struct wpa_ssid *last_ssid;
1867
1868 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1869 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1870
1871 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1872 /*
1873 * At least Host AP driver and a Prism3 card seemed to be
1874 * generating streams of disconnected events when configuring
1875 * IBSS for WPA-None. Ignore them for now.
1876 */
1877 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1878 "IBSS/WPA-None mode");
1879 return;
1880 }
1881
1882 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
1883 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1884 "pre-shared key may be incorrect");
1885 wpas_auth_failed(wpa_s);
1886 }
1887 if (!wpa_s->auto_reconnect_disabled ||
1888 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1889 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
1890 "reconnect (wps=%d wpa_state=%d)",
1891 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
1892 wpa_s->wpa_state);
1893 if (wpa_s->wpa_state == WPA_COMPLETED &&
1894 wpa_s->current_ssid &&
1895 wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
1896 !locally_generated &&
1897 disconnect_reason_recoverable(reason_code)) {
1898 /*
1899 * It looks like the AP has dropped association with
1900 * us, but could allow us to get back in. Try to
1901 * reconnect to the same BSS without full scan to save
1902 * time for some common cases.
1903 */
1904 fast_reconnect = wpa_s->current_bss;
1905 fast_reconnect_ssid = wpa_s->current_ssid;
1906 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1907 wpa_supplicant_req_scan(wpa_s, 0, 100000);
1908 else
1909 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
1910 "immediate scan");
1911 } else {
1912 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
1913 "try to re-connect");
1914 wpa_s->reassociate = 0;
1915 wpa_s->disconnected = 1;
1916 wpa_supplicant_cancel_sched_scan(wpa_s);
1917 }
1918 bssid = wpa_s->bssid;
1919 if (is_zero_ether_addr(bssid))
1920 bssid = wpa_s->pending_bssid;
1921 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
1922 wpas_connection_failed(wpa_s, bssid);
1923 wpa_sm_notify_disassoc(wpa_s->wpa);
1924 if (locally_generated)
1925 wpa_s->disconnect_reason = -reason_code;
1926 else
1927 wpa_s->disconnect_reason = reason_code;
1928 wpas_notify_disconnect_reason(wpa_s);
1929 if (wpa_supplicant_dynamic_keys(wpa_s)) {
1930 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1931 wpa_s->keys_cleared = 0;
1932 wpa_clear_keys(wpa_s, wpa_s->bssid);
1933 }
1934 last_ssid = wpa_s->current_ssid;
1935 wpa_supplicant_mark_disassoc(wpa_s);
1936
1937 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
1938 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1939 wpa_s->current_ssid = last_ssid;
1940 }
1941
1942 if (fast_reconnect) {
1943 #ifndef CONFIG_NO_SCAN_PROCESSING
1944 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
1945 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
1946 fast_reconnect_ssid) < 0) {
1947 /* Recover through full scan */
1948 wpa_supplicant_req_scan(wpa_s, 0, 100000);
1949 }
1950 #endif /* CONFIG_NO_SCAN_PROCESSING */
1951 }
1952 }
1953
1954
1955 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
wpa_supplicant_delayed_mic_error_report(void * eloop_ctx,void * sock_ctx)1956 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
1957 {
1958 struct wpa_supplicant *wpa_s = eloop_ctx;
1959
1960 if (!wpa_s->pending_mic_error_report)
1961 return;
1962
1963 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1964 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1965 wpa_s->pending_mic_error_report = 0;
1966 }
1967 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1968
1969
1970 static void
wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant * wpa_s,union wpa_event_data * data)1971 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1972 union wpa_event_data *data)
1973 {
1974 int pairwise;
1975 struct os_time t;
1976
1977 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1978 pairwise = (data && data->michael_mic_failure.unicast);
1979 os_get_time(&t);
1980 if ((wpa_s->last_michael_mic_error &&
1981 t.sec - wpa_s->last_michael_mic_error <= 60) ||
1982 wpa_s->pending_mic_error_report) {
1983 if (wpa_s->pending_mic_error_report) {
1984 /*
1985 * Send the pending MIC error report immediately since
1986 * we are going to start countermeasures and AP better
1987 * do the same.
1988 */
1989 wpa_sm_key_request(wpa_s->wpa, 1,
1990 wpa_s->pending_mic_error_pairwise);
1991 }
1992
1993 /* Send the new MIC error report immediately since we are going
1994 * to start countermeasures and AP better do the same.
1995 */
1996 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1997
1998 /* initialize countermeasures */
1999 wpa_s->countermeasures = 1;
2000
2001 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2002
2003 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2004
2005 /*
2006 * Need to wait for completion of request frame. We do not get
2007 * any callback for the message completion, so just wait a
2008 * short while and hope for the best. */
2009 os_sleep(0, 10000);
2010
2011 wpa_drv_set_countermeasures(wpa_s, 1);
2012 wpa_supplicant_deauthenticate(wpa_s,
2013 WLAN_REASON_MICHAEL_MIC_FAILURE);
2014 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2015 wpa_s, NULL);
2016 eloop_register_timeout(60, 0,
2017 wpa_supplicant_stop_countermeasures,
2018 wpa_s, NULL);
2019 /* TODO: mark the AP rejected for 60 second. STA is
2020 * allowed to associate with another AP.. */
2021 } else {
2022 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2023 if (wpa_s->mic_errors_seen) {
2024 /*
2025 * Reduce the effectiveness of Michael MIC error
2026 * reports as a means for attacking against TKIP if
2027 * more than one MIC failure is noticed with the same
2028 * PTK. We delay the transmission of the reports by a
2029 * random time between 0 and 60 seconds in order to
2030 * force the attacker wait 60 seconds before getting
2031 * the information on whether a frame resulted in a MIC
2032 * failure.
2033 */
2034 u8 rval[4];
2035 int sec;
2036
2037 if (os_get_random(rval, sizeof(rval)) < 0)
2038 sec = os_random() % 60;
2039 else
2040 sec = WPA_GET_BE32(rval) % 60;
2041 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2042 "report %d seconds", sec);
2043 wpa_s->pending_mic_error_report = 1;
2044 wpa_s->pending_mic_error_pairwise = pairwise;
2045 eloop_cancel_timeout(
2046 wpa_supplicant_delayed_mic_error_report,
2047 wpa_s, NULL);
2048 eloop_register_timeout(
2049 sec, os_random() % 1000000,
2050 wpa_supplicant_delayed_mic_error_report,
2051 wpa_s, NULL);
2052 } else {
2053 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2054 }
2055 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2056 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2057 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2058 }
2059 wpa_s->last_michael_mic_error = t.sec;
2060 wpa_s->mic_errors_seen++;
2061 }
2062
2063
2064 #ifdef CONFIG_TERMINATE_ONLASTIF
any_interfaces(struct wpa_supplicant * head)2065 static int any_interfaces(struct wpa_supplicant *head)
2066 {
2067 struct wpa_supplicant *wpa_s;
2068
2069 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2070 if (!wpa_s->interface_removed)
2071 return 1;
2072 return 0;
2073 }
2074 #endif /* CONFIG_TERMINATE_ONLASTIF */
2075
2076
2077 static void
wpa_supplicant_event_interface_status(struct wpa_supplicant * wpa_s,union wpa_event_data * data)2078 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2079 union wpa_event_data *data)
2080 {
2081 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2082 return;
2083
2084 switch (data->interface_status.ievent) {
2085 case EVENT_INTERFACE_ADDED:
2086 if (!wpa_s->interface_removed)
2087 break;
2088 wpa_s->interface_removed = 0;
2089 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2090 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2091 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2092 "driver after interface was added");
2093 }
2094 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2095 break;
2096 case EVENT_INTERFACE_REMOVED:
2097 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2098 wpa_s->interface_removed = 1;
2099 wpa_supplicant_mark_disassoc(wpa_s);
2100 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2101 l2_packet_deinit(wpa_s->l2);
2102 wpa_s->l2 = NULL;
2103 #ifdef CONFIG_IBSS_RSN
2104 ibss_rsn_deinit(wpa_s->ibss_rsn);
2105 wpa_s->ibss_rsn = NULL;
2106 #endif /* CONFIG_IBSS_RSN */
2107 #ifdef CONFIG_TERMINATE_ONLASTIF
2108 /* check if last interface */
2109 if (!any_interfaces(wpa_s->global->ifaces))
2110 eloop_terminate();
2111 #endif /* CONFIG_TERMINATE_ONLASTIF */
2112 break;
2113 }
2114 }
2115
2116
2117 #ifdef CONFIG_PEERKEY
2118 static void
wpa_supplicant_event_stkstart(struct wpa_supplicant * wpa_s,union wpa_event_data * data)2119 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2120 union wpa_event_data *data)
2121 {
2122 if (data == NULL)
2123 return;
2124 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2125 }
2126 #endif /* CONFIG_PEERKEY */
2127
2128
2129 #ifdef CONFIG_TDLS
wpa_supplicant_event_tdls(struct wpa_supplicant * wpa_s,union wpa_event_data * data)2130 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2131 union wpa_event_data *data)
2132 {
2133 if (data == NULL)
2134 return;
2135 switch (data->tdls.oper) {
2136 case TDLS_REQUEST_SETUP:
2137 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2138 break;
2139 case TDLS_REQUEST_TEARDOWN:
2140 wpa_tdls_send_teardown(wpa_s->wpa, data->tdls.peer,
2141 data->tdls.reason_code);
2142 break;
2143 }
2144 }
2145 #endif /* CONFIG_TDLS */
2146
2147
2148 #ifdef CONFIG_WNM
wpa_supplicant_event_wnm(struct wpa_supplicant * wpa_s,union wpa_event_data * data)2149 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2150 union wpa_event_data *data)
2151 {
2152 if (data == NULL)
2153 return;
2154 switch (data->wnm.oper) {
2155 case WNM_OPER_SLEEP:
2156 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2157 "(action=%d, intval=%d)",
2158 data->wnm.sleep_action, data->wnm.sleep_intval);
2159 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2160 data->wnm.sleep_intval, NULL);
2161 break;
2162 }
2163 }
2164 #endif /* CONFIG_WNM */
2165
2166
2167 #ifdef CONFIG_IEEE80211R
2168 static void
wpa_supplicant_event_ft_response(struct wpa_supplicant * wpa_s,union wpa_event_data * data)2169 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2170 union wpa_event_data *data)
2171 {
2172 if (data == NULL)
2173 return;
2174
2175 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2176 data->ft_ies.ies_len,
2177 data->ft_ies.ft_action,
2178 data->ft_ies.target_ap,
2179 data->ft_ies.ric_ies,
2180 data->ft_ies.ric_ies_len) < 0) {
2181 /* TODO: prevent MLME/driver from trying to associate? */
2182 }
2183 }
2184 #endif /* CONFIG_IEEE80211R */
2185
2186
2187 #ifdef CONFIG_IBSS_RSN
wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant * wpa_s,union wpa_event_data * data)2188 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2189 union wpa_event_data *data)
2190 {
2191 struct wpa_ssid *ssid;
2192 if (wpa_s->wpa_state < WPA_ASSOCIATED)
2193 return;
2194 if (data == NULL)
2195 return;
2196 ssid = wpa_s->current_ssid;
2197 if (ssid == NULL)
2198 return;
2199 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2200 return;
2201
2202 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2203 }
2204 #endif /* CONFIG_IBSS_RSN */
2205
2206
2207 #ifdef CONFIG_IEEE80211R
ft_rx_action(struct wpa_supplicant * wpa_s,const u8 * data,size_t len)2208 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2209 size_t len)
2210 {
2211 const u8 *sta_addr, *target_ap_addr;
2212 u16 status;
2213
2214 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2215 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2216 return; /* only SME case supported for now */
2217 if (len < 1 + 2 * ETH_ALEN + 2)
2218 return;
2219 if (data[0] != 2)
2220 return; /* Only FT Action Response is supported for now */
2221 sta_addr = data + 1;
2222 target_ap_addr = data + 1 + ETH_ALEN;
2223 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2224 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2225 MACSTR " TargetAP " MACSTR " status %u",
2226 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2227
2228 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2229 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2230 " in FT Action Response", MAC2STR(sta_addr));
2231 return;
2232 }
2233
2234 if (status) {
2235 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2236 "failure (status code %d)", status);
2237 /* TODO: report error to FT code(?) */
2238 return;
2239 }
2240
2241 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2242 len - (1 + 2 * ETH_ALEN + 2), 1,
2243 target_ap_addr, NULL, 0) < 0)
2244 return;
2245
2246 #ifdef CONFIG_SME
2247 {
2248 struct wpa_bss *bss;
2249 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2250 if (bss)
2251 wpa_s->sme.freq = bss->freq;
2252 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2253 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2254 WLAN_AUTH_FT);
2255 }
2256 #endif /* CONFIG_SME */
2257 }
2258 #endif /* CONFIG_IEEE80211R */
2259
2260
wpa_supplicant_event_unprot_deauth(struct wpa_supplicant * wpa_s,struct unprot_deauth * e)2261 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2262 struct unprot_deauth *e)
2263 {
2264 #ifdef CONFIG_IEEE80211W
2265 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2266 "dropped: " MACSTR " -> " MACSTR
2267 " (reason code %u)",
2268 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2269 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2270 #endif /* CONFIG_IEEE80211W */
2271 }
2272
2273
wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant * wpa_s,struct unprot_disassoc * e)2274 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2275 struct unprot_disassoc *e)
2276 {
2277 #ifdef CONFIG_IEEE80211W
2278 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2279 "dropped: " MACSTR " -> " MACSTR
2280 " (reason code %u)",
2281 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2282 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2283 #endif /* CONFIG_IEEE80211W */
2284 }
2285
2286
wpa_supplicant_event(void * ctx,enum wpa_event_type event,union wpa_event_data * data)2287 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2288 union wpa_event_data *data)
2289 {
2290 struct wpa_supplicant *wpa_s = ctx;
2291 u16 reason_code = 0;
2292 int locally_generated = 0;
2293
2294 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2295 event != EVENT_INTERFACE_ENABLED &&
2296 event != EVENT_INTERFACE_STATUS &&
2297 event != EVENT_SCHED_SCAN_STOPPED) {
2298 wpa_dbg(wpa_s, MSG_DEBUG,
2299 "Ignore event %s (%d) while interface is disabled",
2300 event_to_string(event), event);
2301 return;
2302 }
2303
2304 #ifndef CONFIG_NO_STDOUT_DEBUG
2305 {
2306 int level = MSG_DEBUG;
2307
2308 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2309 const struct ieee80211_hdr *hdr;
2310 u16 fc;
2311 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2312 fc = le_to_host16(hdr->frame_control);
2313 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2314 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2315 level = MSG_EXCESSIVE;
2316 }
2317
2318 wpa_dbg(wpa_s, level, "Event %s (%d) received",
2319 event_to_string(event), event);
2320 }
2321 #endif /* CONFIG_NO_STDOUT_DEBUG */
2322
2323 switch (event) {
2324 case EVENT_AUTH:
2325 sme_event_auth(wpa_s, data);
2326 break;
2327 case EVENT_ASSOC:
2328 wpa_supplicant_event_assoc(wpa_s, data);
2329 break;
2330 case EVENT_DISASSOC:
2331 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2332 if (data) {
2333 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2334 data->disassoc_info.reason_code,
2335 data->disassoc_info.locally_generated ?
2336 " (locally generated)" : "");
2337 if (data->disassoc_info.addr)
2338 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2339 MAC2STR(data->disassoc_info.addr));
2340 }
2341 #ifdef CONFIG_AP
2342 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
2343 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2344 data->disassoc_info.addr);
2345 break;
2346 }
2347 if (wpa_s->ap_iface) {
2348 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in "
2349 "AP mode");
2350 break;
2351 }
2352 #endif /* CONFIG_AP */
2353 if (data) {
2354 reason_code = data->disassoc_info.reason_code;
2355 locally_generated =
2356 data->disassoc_info.locally_generated;
2357 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2358 data->disassoc_info.ie,
2359 data->disassoc_info.ie_len);
2360 #ifdef CONFIG_P2P
2361 wpas_p2p_disassoc_notif(
2362 wpa_s, data->disassoc_info.addr, reason_code,
2363 data->disassoc_info.ie,
2364 data->disassoc_info.ie_len,
2365 locally_generated);
2366 #endif /* CONFIG_P2P */
2367 }
2368 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2369 sme_event_disassoc(wpa_s, data);
2370 /* fall through */
2371 case EVENT_DEAUTH:
2372 if (event == EVENT_DEAUTH) {
2373 wpa_dbg(wpa_s, MSG_DEBUG,
2374 "Deauthentication notification");
2375 if (data) {
2376 reason_code = data->deauth_info.reason_code;
2377 locally_generated =
2378 data->deauth_info.locally_generated;
2379 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2380 data->deauth_info.reason_code,
2381 data->deauth_info.locally_generated ?
2382 " (locally generated)" : "");
2383 if (data->deauth_info.addr) {
2384 wpa_dbg(wpa_s, MSG_DEBUG, " * address "
2385 MACSTR,
2386 MAC2STR(data->deauth_info.
2387 addr));
2388 }
2389 wpa_hexdump(MSG_DEBUG,
2390 "Deauthentication frame IE(s)",
2391 data->deauth_info.ie,
2392 data->deauth_info.ie_len);
2393 }
2394 }
2395 #ifdef CONFIG_AP
2396 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
2397 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2398 data->deauth_info.addr);
2399 break;
2400 }
2401 if (wpa_s->ap_iface) {
2402 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in "
2403 "AP mode");
2404 break;
2405 }
2406 #endif /* CONFIG_AP */
2407 wpa_supplicant_event_disassoc(wpa_s, reason_code,
2408 locally_generated);
2409 if (reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2410 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2411 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2412 eapol_sm_failed(wpa_s->eapol)))
2413 wpas_auth_failed(wpa_s);
2414 #ifdef CONFIG_P2P
2415 if (event == EVENT_DEAUTH && data) {
2416 if (wpas_p2p_deauth_notif(wpa_s,
2417 data->deauth_info.addr,
2418 reason_code,
2419 data->deauth_info.ie,
2420 data->deauth_info.ie_len,
2421 locally_generated) > 0) {
2422 /*
2423 * The interface was removed, so cannot
2424 * continue processing any additional
2425 * operations after this.
2426 */
2427 break;
2428 }
2429 }
2430 #endif /* CONFIG_P2P */
2431 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2432 locally_generated);
2433 break;
2434 case EVENT_MICHAEL_MIC_FAILURE:
2435 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2436 break;
2437 #ifndef CONFIG_NO_SCAN_PROCESSING
2438 case EVENT_SCAN_RESULTS:
2439 wpa_supplicant_event_scan_results(wpa_s, data);
2440 #ifdef CONFIG_P2P
2441 if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
2442 wpa_s->global->p2p != NULL &&
2443 wpa_s->wpa_state != WPA_AUTHENTICATING &&
2444 wpa_s->wpa_state != WPA_ASSOCIATING) {
2445 wpa_s->global->p2p_cb_on_scan_complete = 0;
2446 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
2447 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
2448 "continued after scan result processing");
2449 }
2450 }
2451 #endif /* CONFIG_P2P */
2452 break;
2453 #endif /* CONFIG_NO_SCAN_PROCESSING */
2454 case EVENT_ASSOCINFO:
2455 wpa_supplicant_event_associnfo(wpa_s, data);
2456 break;
2457 case EVENT_INTERFACE_STATUS:
2458 wpa_supplicant_event_interface_status(wpa_s, data);
2459 break;
2460 case EVENT_PMKID_CANDIDATE:
2461 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2462 break;
2463 #ifdef CONFIG_PEERKEY
2464 case EVENT_STKSTART:
2465 wpa_supplicant_event_stkstart(wpa_s, data);
2466 break;
2467 #endif /* CONFIG_PEERKEY */
2468 #ifdef CONFIG_TDLS
2469 case EVENT_TDLS:
2470 wpa_supplicant_event_tdls(wpa_s, data);
2471 break;
2472 #endif /* CONFIG_TDLS */
2473 #ifdef CONFIG_WNM
2474 case EVENT_WNM:
2475 wpa_supplicant_event_wnm(wpa_s, data);
2476 break;
2477 #endif /* CONFIG_WNM */
2478 #ifdef CONFIG_IEEE80211R
2479 case EVENT_FT_RESPONSE:
2480 wpa_supplicant_event_ft_response(wpa_s, data);
2481 break;
2482 #endif /* CONFIG_IEEE80211R */
2483 #ifdef CONFIG_IBSS_RSN
2484 case EVENT_IBSS_RSN_START:
2485 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2486 break;
2487 #endif /* CONFIG_IBSS_RSN */
2488 case EVENT_ASSOC_REJECT:
2489 if (data->assoc_reject.bssid)
2490 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2491 "bssid=" MACSTR " status_code=%u",
2492 MAC2STR(data->assoc_reject.bssid),
2493 data->assoc_reject.status_code);
2494 else
2495 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2496 "status_code=%u",
2497 data->assoc_reject.status_code);
2498 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2499 sme_event_assoc_reject(wpa_s, data);
2500 else {
2501 const u8 *bssid = data->assoc_reject.bssid;
2502 if (bssid == NULL || is_zero_ether_addr(bssid))
2503 bssid = wpa_s->pending_bssid;
2504 wpas_connection_failed(wpa_s, bssid);
2505 wpa_supplicant_mark_disassoc(wpa_s);
2506 }
2507 break;
2508 case EVENT_AUTH_TIMED_OUT:
2509 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2510 sme_event_auth_timed_out(wpa_s, data);
2511 break;
2512 case EVENT_ASSOC_TIMED_OUT:
2513 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2514 sme_event_assoc_timed_out(wpa_s, data);
2515 break;
2516 case EVENT_TX_STATUS:
2517 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2518 " type=%d stype=%d",
2519 MAC2STR(data->tx_status.dst),
2520 data->tx_status.type, data->tx_status.stype);
2521 #ifdef CONFIG_AP
2522 if (wpa_s->ap_iface == NULL) {
2523 #ifdef CONFIG_OFFCHANNEL
2524 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2525 data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2526 offchannel_send_action_tx_status(
2527 wpa_s, data->tx_status.dst,
2528 data->tx_status.data,
2529 data->tx_status.data_len,
2530 data->tx_status.ack ?
2531 OFFCHANNEL_SEND_ACTION_SUCCESS :
2532 OFFCHANNEL_SEND_ACTION_NO_ACK);
2533 #endif /* CONFIG_OFFCHANNEL */
2534 break;
2535 }
2536 #endif /* CONFIG_AP */
2537 #ifdef CONFIG_OFFCHANNEL
2538 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2539 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2540 /*
2541 * Catch TX status events for Action frames we sent via group
2542 * interface in GO mode.
2543 */
2544 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2545 data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2546 os_memcmp(wpa_s->parent->pending_action_dst,
2547 data->tx_status.dst, ETH_ALEN) == 0) {
2548 offchannel_send_action_tx_status(
2549 wpa_s->parent, data->tx_status.dst,
2550 data->tx_status.data,
2551 data->tx_status.data_len,
2552 data->tx_status.ack ?
2553 OFFCHANNEL_SEND_ACTION_SUCCESS :
2554 OFFCHANNEL_SEND_ACTION_NO_ACK);
2555 break;
2556 }
2557 #endif /* CONFIG_OFFCHANNEL */
2558 #ifdef CONFIG_AP
2559 switch (data->tx_status.type) {
2560 case WLAN_FC_TYPE_MGMT:
2561 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2562 data->tx_status.data_len,
2563 data->tx_status.stype,
2564 data->tx_status.ack);
2565 break;
2566 case WLAN_FC_TYPE_DATA:
2567 ap_tx_status(wpa_s, data->tx_status.dst,
2568 data->tx_status.data,
2569 data->tx_status.data_len,
2570 data->tx_status.ack);
2571 break;
2572 }
2573 #endif /* CONFIG_AP */
2574 break;
2575 #ifdef CONFIG_AP
2576 case EVENT_EAPOL_TX_STATUS:
2577 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
2578 data->eapol_tx_status.data,
2579 data->eapol_tx_status.data_len,
2580 data->eapol_tx_status.ack);
2581 break;
2582 case EVENT_DRIVER_CLIENT_POLL_OK:
2583 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2584 break;
2585 case EVENT_RX_FROM_UNKNOWN:
2586 if (wpa_s->ap_iface == NULL)
2587 break;
2588 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2589 data->rx_from_unknown.wds);
2590 break;
2591 case EVENT_CH_SWITCH:
2592 if (!data)
2593 break;
2594 if (!wpa_s->ap_iface) {
2595 wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
2596 "event in non-AP mode");
2597 break;
2598 }
2599
2600 #ifdef CONFIG_AP
2601 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
2602 data->ch_switch.ht_enabled,
2603 data->ch_switch.ch_offset);
2604 #endif /* CONFIG_AP */
2605 break;
2606 case EVENT_RX_MGMT: {
2607 u16 fc, stype;
2608 const struct ieee80211_mgmt *mgmt;
2609
2610 mgmt = (const struct ieee80211_mgmt *)
2611 data->rx_mgmt.frame;
2612 fc = le_to_host16(mgmt->frame_control);
2613 stype = WLAN_FC_GET_STYPE(fc);
2614
2615 if (wpa_s->ap_iface == NULL) {
2616 #ifdef CONFIG_P2P
2617 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2618 data->rx_mgmt.frame_len > 24) {
2619 const u8 *src = mgmt->sa;
2620 const u8 *ie = mgmt->u.probe_req.variable;
2621 size_t ie_len = data->rx_mgmt.frame_len -
2622 (mgmt->u.probe_req.variable -
2623 data->rx_mgmt.frame);
2624 wpas_p2p_probe_req_rx(
2625 wpa_s, src, mgmt->da,
2626 mgmt->bssid, ie, ie_len,
2627 data->rx_mgmt.ssi_signal);
2628 break;
2629 }
2630 #endif /* CONFIG_P2P */
2631 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2632 "management frame in non-AP mode");
2633 break;
2634 }
2635
2636 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2637 data->rx_mgmt.frame_len > 24) {
2638 const u8 *ie = mgmt->u.probe_req.variable;
2639 size_t ie_len = data->rx_mgmt.frame_len -
2640 (mgmt->u.probe_req.variable -
2641 data->rx_mgmt.frame);
2642
2643 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
2644 mgmt->bssid, ie, ie_len,
2645 data->rx_mgmt.ssi_signal);
2646 }
2647
2648 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2649 break;
2650 }
2651 #endif /* CONFIG_AP */
2652 case EVENT_RX_ACTION:
2653 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2654 " Category=%u DataLen=%d freq=%d MHz",
2655 MAC2STR(data->rx_action.sa),
2656 data->rx_action.category, (int) data->rx_action.len,
2657 data->rx_action.freq);
2658 #ifdef CONFIG_IEEE80211R
2659 if (data->rx_action.category == WLAN_ACTION_FT) {
2660 ft_rx_action(wpa_s, data->rx_action.data,
2661 data->rx_action.len);
2662 break;
2663 }
2664 #endif /* CONFIG_IEEE80211R */
2665 #ifdef CONFIG_IEEE80211W
2666 #ifdef CONFIG_SME
2667 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2668 sme_sa_query_rx(wpa_s, data->rx_action.sa,
2669 data->rx_action.data,
2670 data->rx_action.len);
2671 break;
2672 }
2673 #endif /* CONFIG_SME */
2674 #endif /* CONFIG_IEEE80211W */
2675 #ifdef CONFIG_WNM
2676 if (data->rx_action.category == WLAN_ACTION_WNM) {
2677 ieee802_11_rx_wnm_action(wpa_s, &data->rx_action);
2678 break;
2679 }
2680 #endif /* CONFIG_WNM */
2681 #ifdef CONFIG_GAS
2682 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2683 gas_query_rx(wpa_s->gas, data->rx_action.da,
2684 data->rx_action.sa, data->rx_action.bssid,
2685 data->rx_action.data, data->rx_action.len,
2686 data->rx_action.freq) == 0)
2687 break;
2688 #endif /* CONFIG_GAS */
2689 #ifdef CONFIG_TDLS
2690 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2691 data->rx_action.len >= 4 &&
2692 data->rx_action.data[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2693 wpa_dbg(wpa_s, MSG_DEBUG, "TDLS: Received Discovery "
2694 "Response from " MACSTR,
2695 MAC2STR(data->rx_action.sa));
2696 break;
2697 }
2698 #endif /* CONFIG_TDLS */
2699 #ifdef CONFIG_P2P
2700 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2701 data->rx_action.sa,
2702 data->rx_action.bssid,
2703 data->rx_action.category,
2704 data->rx_action.data,
2705 data->rx_action.len, data->rx_action.freq);
2706 #endif /* CONFIG_P2P */
2707 break;
2708 case EVENT_RX_PROBE_REQ:
2709 if (data->rx_probe_req.sa == NULL ||
2710 data->rx_probe_req.ie == NULL)
2711 break;
2712 #ifdef CONFIG_AP
2713 if (wpa_s->ap_iface) {
2714 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2715 data->rx_probe_req.sa,
2716 data->rx_probe_req.da,
2717 data->rx_probe_req.bssid,
2718 data->rx_probe_req.ie,
2719 data->rx_probe_req.ie_len,
2720 data->rx_probe_req.ssi_signal);
2721 break;
2722 }
2723 #endif /* CONFIG_AP */
2724 #ifdef CONFIG_P2P
2725 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2726 data->rx_probe_req.da,
2727 data->rx_probe_req.bssid,
2728 data->rx_probe_req.ie,
2729 data->rx_probe_req.ie_len,
2730 data->rx_probe_req.ssi_signal);
2731 #endif /* CONFIG_P2P */
2732 break;
2733 case EVENT_REMAIN_ON_CHANNEL:
2734 #ifdef CONFIG_OFFCHANNEL
2735 offchannel_remain_on_channel_cb(
2736 wpa_s, data->remain_on_channel.freq,
2737 data->remain_on_channel.duration);
2738 #endif /* CONFIG_OFFCHANNEL */
2739 #ifdef CONFIG_P2P
2740 wpas_p2p_remain_on_channel_cb(
2741 wpa_s, data->remain_on_channel.freq,
2742 data->remain_on_channel.duration);
2743 #endif /* CONFIG_P2P */
2744 break;
2745 case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2746 #ifdef CONFIG_OFFCHANNEL
2747 offchannel_cancel_remain_on_channel_cb(
2748 wpa_s, data->remain_on_channel.freq);
2749 #endif /* CONFIG_OFFCHANNEL */
2750 #ifdef CONFIG_P2P
2751 wpas_p2p_cancel_remain_on_channel_cb(
2752 wpa_s, data->remain_on_channel.freq);
2753 #endif /* CONFIG_P2P */
2754 break;
2755 #ifdef CONFIG_P2P
2756 case EVENT_P2P_DEV_FOUND: {
2757 struct p2p_peer_info peer_info;
2758
2759 os_memset(&peer_info, 0, sizeof(peer_info));
2760 if (data->p2p_dev_found.dev_addr)
2761 os_memcpy(peer_info.p2p_device_addr,
2762 data->p2p_dev_found.dev_addr, ETH_ALEN);
2763 if (data->p2p_dev_found.pri_dev_type)
2764 os_memcpy(peer_info.pri_dev_type,
2765 data->p2p_dev_found.pri_dev_type,
2766 sizeof(peer_info.pri_dev_type));
2767 if (data->p2p_dev_found.dev_name)
2768 os_strlcpy(peer_info.device_name,
2769 data->p2p_dev_found.dev_name,
2770 sizeof(peer_info.device_name));
2771 peer_info.config_methods = data->p2p_dev_found.config_methods;
2772 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2773 peer_info.group_capab = data->p2p_dev_found.group_capab;
2774
2775 /*
2776 * FIX: new_device=1 is not necessarily correct. We should
2777 * maintain a P2P peer database in wpa_supplicant and update
2778 * this information based on whether the peer is truly new.
2779 */
2780 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2781 break;
2782 }
2783 case EVENT_P2P_GO_NEG_REQ_RX:
2784 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2785 data->p2p_go_neg_req_rx.dev_passwd_id);
2786 break;
2787 case EVENT_P2P_GO_NEG_COMPLETED:
2788 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2789 break;
2790 case EVENT_P2P_PROV_DISC_REQUEST:
2791 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2792 data->p2p_prov_disc_req.config_methods,
2793 data->p2p_prov_disc_req.dev_addr,
2794 data->p2p_prov_disc_req.pri_dev_type,
2795 data->p2p_prov_disc_req.dev_name,
2796 data->p2p_prov_disc_req.supp_config_methods,
2797 data->p2p_prov_disc_req.dev_capab,
2798 data->p2p_prov_disc_req.group_capab,
2799 NULL, 0);
2800 break;
2801 case EVENT_P2P_PROV_DISC_RESPONSE:
2802 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2803 data->p2p_prov_disc_resp.config_methods);
2804 break;
2805 case EVENT_P2P_SD_REQUEST:
2806 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2807 data->p2p_sd_req.sa,
2808 data->p2p_sd_req.dialog_token,
2809 data->p2p_sd_req.update_indic,
2810 data->p2p_sd_req.tlvs,
2811 data->p2p_sd_req.tlvs_len);
2812 break;
2813 case EVENT_P2P_SD_RESPONSE:
2814 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2815 data->p2p_sd_resp.update_indic,
2816 data->p2p_sd_resp.tlvs,
2817 data->p2p_sd_resp.tlvs_len);
2818 break;
2819 #endif /* CONFIG_P2P */
2820 case EVENT_EAPOL_RX:
2821 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2822 data->eapol_rx.data,
2823 data->eapol_rx.data_len);
2824 break;
2825 case EVENT_SIGNAL_CHANGE:
2826 bgscan_notify_signal_change(
2827 wpa_s, data->signal_change.above_threshold,
2828 data->signal_change.current_signal,
2829 data->signal_change.current_noise,
2830 data->signal_change.current_txrate);
2831 break;
2832 case EVENT_INTERFACE_ENABLED:
2833 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2834 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2835 wpa_supplicant_update_mac_addr(wpa_s);
2836 #ifdef CONFIG_AP
2837 if (!wpa_s->ap_iface) {
2838 wpa_supplicant_set_state(wpa_s,
2839 WPA_DISCONNECTED);
2840 wpa_supplicant_req_scan(wpa_s, 0, 0);
2841 } else
2842 wpa_supplicant_set_state(wpa_s,
2843 WPA_COMPLETED);
2844 #else /* CONFIG_AP */
2845 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2846 wpa_supplicant_req_scan(wpa_s, 0, 0);
2847 #endif /* CONFIG_AP */
2848 }
2849 break;
2850 case EVENT_INTERFACE_DISABLED:
2851 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2852 wpa_supplicant_mark_disassoc(wpa_s);
2853 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2854 break;
2855 case EVENT_CHANNEL_LIST_CHANGED:
2856 if (wpa_s->drv_priv == NULL)
2857 break; /* Ignore event during drv initialization */
2858
2859 free_hw_features(wpa_s);
2860 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2861 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2862
2863 #ifdef CONFIG_P2P
2864 wpas_p2p_update_channel_list(wpa_s);
2865 #endif /* CONFIG_P2P */
2866 break;
2867 case EVENT_INTERFACE_UNAVAILABLE:
2868 #ifdef CONFIG_P2P
2869 wpas_p2p_interface_unavailable(wpa_s);
2870 #endif /* CONFIG_P2P */
2871 break;
2872 case EVENT_BEST_CHANNEL:
2873 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2874 "(%d %d %d)",
2875 data->best_chan.freq_24, data->best_chan.freq_5,
2876 data->best_chan.freq_overall);
2877 wpa_s->best_24_freq = data->best_chan.freq_24;
2878 wpa_s->best_5_freq = data->best_chan.freq_5;
2879 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2880 #ifdef CONFIG_P2P
2881 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2882 data->best_chan.freq_5,
2883 data->best_chan.freq_overall);
2884 #endif /* CONFIG_P2P */
2885 break;
2886 case EVENT_UNPROT_DEAUTH:
2887 wpa_supplicant_event_unprot_deauth(wpa_s,
2888 &data->unprot_deauth);
2889 break;
2890 case EVENT_UNPROT_DISASSOC:
2891 wpa_supplicant_event_unprot_disassoc(wpa_s,
2892 &data->unprot_disassoc);
2893 break;
2894 case EVENT_STATION_LOW_ACK:
2895 #ifdef CONFIG_AP
2896 if (wpa_s->ap_iface && data)
2897 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2898 data->low_ack.addr);
2899 #endif /* CONFIG_AP */
2900 #ifdef CONFIG_TDLS
2901 if (data)
2902 wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
2903 #endif /* CONFIG_TDLS */
2904 break;
2905 case EVENT_IBSS_PEER_LOST:
2906 #ifdef CONFIG_IBSS_RSN
2907 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2908 #endif /* CONFIG_IBSS_RSN */
2909 break;
2910 case EVENT_DRIVER_GTK_REKEY:
2911 if (os_memcmp(data->driver_gtk_rekey.bssid,
2912 wpa_s->bssid, ETH_ALEN))
2913 break;
2914 if (!wpa_s->wpa)
2915 break;
2916 wpa_sm_update_replay_ctr(wpa_s->wpa,
2917 data->driver_gtk_rekey.replay_ctr);
2918 break;
2919 case EVENT_SCHED_SCAN_STOPPED:
2920 wpa_s->sched_scanning = 0;
2921 wpa_supplicant_notify_scanning(wpa_s, 0);
2922
2923 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2924 break;
2925
2926 /*
2927 * If we timed out, start a new sched scan to continue
2928 * searching for more SSIDs.
2929 */
2930 if (wpa_s->sched_scan_timed_out)
2931 wpa_supplicant_req_sched_scan(wpa_s);
2932 break;
2933 case EVENT_WPS_BUTTON_PUSHED:
2934 #ifdef CONFIG_WPS
2935 wpas_wps_start_pbc(wpa_s, NULL, 0);
2936 #endif /* CONFIG_WPS */
2937 break;
2938 default:
2939 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2940 break;
2941 }
2942 }
2943