AMD64 - Fix format conversions and other warnings.
[dragonfly.git] / contrib / wpa_supplicant-0.5.8 / events.c
blobc0f4210afa0fb1ea5c09134738e50330ece527d9
1 /*
2 * WPA Supplicant - Driver event processing
3 * Copyright (c) 2003-2006, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
12 * See README and COPYING for more details.
15 #include "includes.h"
17 #include "common.h"
18 #include "eapol_sm.h"
19 #include "wpa.h"
20 #include "eloop.h"
21 #include "wpa_supplicant.h"
22 #include "config.h"
23 #include "l2_packet.h"
24 #include "wpa_supplicant_i.h"
25 #include "pcsc_funcs.h"
26 #include "preauth.h"
27 #include "pmksa_cache.h"
28 #include "wpa_ctrl.h"
29 #include "eap.h"
30 #include "ctrl_iface_dbus.h"
33 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
35 struct wpa_ssid *ssid;
37 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
38 return 0;
40 ssid = wpa_supplicant_get_ssid(wpa_s);
41 if (ssid == NULL) {
42 wpa_printf(MSG_INFO, "No network configuration found for the "
43 "current AP");
44 return -1;
47 if (ssid->disabled) {
48 wpa_printf(MSG_DEBUG, "Selected network is disabled");
49 return -1;
52 wpa_printf(MSG_DEBUG, "Network configuration found for the current "
53 "AP");
54 if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
55 WPA_KEY_MGMT_WPA_NONE)) {
56 u8 wpa_ie[80];
57 size_t wpa_ie_len = sizeof(wpa_ie);
58 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
59 wpa_ie, &wpa_ie_len);
60 } else {
61 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
64 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
65 eapol_sm_invalidate_cached_session(wpa_s->eapol);
66 wpa_s->current_ssid = ssid;
67 wpa_sm_set_config(wpa_s->wpa, wpa_s->current_ssid);
68 wpa_supplicant_initiate_eapol(wpa_s);
70 return 0;
74 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
75 void *sock_ctx)
77 struct wpa_supplicant *wpa_s = eloop_ctx;
79 if (wpa_s->countermeasures) {
80 wpa_s->countermeasures = 0;
81 wpa_drv_set_countermeasures(wpa_s, 0);
82 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
83 wpa_supplicant_req_scan(wpa_s, 0, 0);
88 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
90 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
91 os_memset(wpa_s->bssid, 0, ETH_ALEN);
92 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
93 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
94 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
95 if (wpa_s->key_mgmt == WPA_KEY_MGMT_PSK)
96 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
100 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
102 struct wpa_ie_data ie;
103 int i, pmksa_set = -1;
105 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
106 ie.pmkid == NULL)
107 return;
109 for (i = 0; i < ie.num_pmkid; i++) {
110 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
111 ie.pmkid + i * PMKID_LEN,
112 NULL, NULL, 0);
113 if (pmksa_set == 0) {
114 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
115 break;
119 wpa_printf(MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from PMKSA "
120 "cache", pmksa_set == 0 ? "" : "not ");
124 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
125 union wpa_event_data *data)
127 if (data == NULL) {
128 wpa_printf(MSG_DEBUG, "RSN: No data in PMKID candidate event");
129 return;
131 wpa_printf(MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
132 " index=%d preauth=%d",
133 MAC2STR(data->pmkid_candidate.bssid),
134 data->pmkid_candidate.index,
135 data->pmkid_candidate.preauth);
137 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
138 data->pmkid_candidate.index,
139 data->pmkid_candidate.preauth);
143 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
145 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
146 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
147 return 0;
149 #ifdef IEEE8021X_EAPOL
150 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
151 wpa_s->current_ssid &&
152 !(wpa_s->current_ssid->eapol_flags &
153 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
154 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
155 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
156 * plaintext or static WEP keys). */
157 return 0;
159 #endif /* IEEE8021X_EAPOL */
161 return 1;
166 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
167 * @wpa_s: pointer to wpa_supplicant data
168 * @ssid: Configuration data for the network
169 * Returns: 0 on success, -1 on failure
171 * This function is called when starting authentication with a network that is
172 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
174 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
175 struct wpa_ssid *ssid)
177 #ifdef IEEE8021X_EAPOL
178 int aka = 0, sim = 0, type;
180 if (ssid->pcsc == NULL || wpa_s->scard != NULL)
181 return 0;
183 if (ssid->eap_methods == NULL) {
184 sim = 1;
185 aka = 1;
186 } else {
187 struct eap_method_type *eap = ssid->eap_methods;
188 while (eap->vendor != EAP_VENDOR_IETF ||
189 eap->method != EAP_TYPE_NONE) {
190 if (eap->vendor == EAP_VENDOR_IETF) {
191 if (eap->method == EAP_TYPE_SIM)
192 sim = 1;
193 else if (eap->method == EAP_TYPE_AKA)
194 aka = 1;
196 eap++;
200 if (eap_sm_get_eap_methods(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
201 sim = 0;
202 if (eap_sm_get_eap_methods(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
203 aka = 0;
205 if (!sim && !aka) {
206 wpa_printf(MSG_DEBUG, "Selected network is configured to use "
207 "SIM, but neither EAP-SIM nor EAP-AKA are enabled");
208 return 0;
211 wpa_printf(MSG_DEBUG, "Selected network is configured to use SIM "
212 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
213 if (sim && aka)
214 type = SCARD_TRY_BOTH;
215 else if (aka)
216 type = SCARD_USIM_ONLY;
217 else
218 type = SCARD_GSM_SIM_ONLY;
220 wpa_s->scard = scard_init(type);
221 if (wpa_s->scard == NULL) {
222 wpa_printf(MSG_WARNING, "Failed to initialize SIM "
223 "(pcsc-lite)");
224 return -1;
226 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
227 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
228 #endif /* IEEE8021X_EAPOL */
230 return 0;
234 static int wpa_supplicant_match_privacy(struct wpa_scan_result *bss,
235 struct wpa_ssid *ssid)
237 int i, privacy = 0;
239 if (ssid->mixed_cell)
240 return 1;
242 for (i = 0; i < NUM_WEP_KEYS; i++) {
243 if (ssid->wep_key_len[i]) {
244 privacy = 1;
245 break;
248 #ifdef IEEE8021X_EAPOL
249 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
250 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
251 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
252 privacy = 1;
253 #endif /* IEEE8021X_EAPOL */
255 if (bss->caps & IEEE80211_CAP_PRIVACY)
256 return privacy;
257 return !privacy;
261 static int wpa_supplicant_ssid_bss_match(struct wpa_ssid *ssid,
262 struct wpa_scan_result *bss)
264 struct wpa_ie_data ie;
265 int proto_match = 0;
267 while ((ssid->proto & WPA_PROTO_RSN) && bss->rsn_ie_len > 0) {
268 proto_match++;
270 if (wpa_parse_wpa_ie(bss->rsn_ie, bss->rsn_ie_len, &ie)) {
271 wpa_printf(MSG_DEBUG, " skip RSN IE - parse failed");
272 break;
274 if (!(ie.proto & ssid->proto)) {
275 wpa_printf(MSG_DEBUG, " skip RSN IE - proto "
276 "mismatch");
277 break;
280 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
281 wpa_printf(MSG_DEBUG, " skip RSN IE - PTK cipher "
282 "mismatch");
283 break;
286 if (!(ie.group_cipher & ssid->group_cipher)) {
287 wpa_printf(MSG_DEBUG, " skip RSN IE - GTK cipher "
288 "mismatch");
289 break;
292 if (!(ie.key_mgmt & ssid->key_mgmt)) {
293 wpa_printf(MSG_DEBUG, " skip RSN IE - key mgmt "
294 "mismatch");
295 break;
298 #ifdef CONFIG_IEEE80211W
299 if (!(ie.capabilities & WPA_CAPABILITY_MGMT_FRAME_PROTECTION)
300 && ssid->ieee80211w == IEEE80211W_REQUIRED) {
301 wpa_printf(MSG_DEBUG, " skip RSN IE - no mgmt frame "
302 "protection");
303 break;
305 #endif /* CONFIG_IEEE80211W */
307 wpa_printf(MSG_DEBUG, " selected based on RSN IE");
308 return 1;
311 while ((ssid->proto & WPA_PROTO_WPA) && bss->wpa_ie_len > 0) {
312 proto_match++;
314 if (wpa_parse_wpa_ie(bss->wpa_ie, bss->wpa_ie_len, &ie)) {
315 wpa_printf(MSG_DEBUG, " skip WPA IE - parse failed");
316 break;
318 if (!(ie.proto & ssid->proto)) {
319 wpa_printf(MSG_DEBUG, " skip WPA IE - proto "
320 "mismatch");
321 break;
324 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
325 wpa_printf(MSG_DEBUG, " skip WPA IE - PTK cipher "
326 "mismatch");
327 break;
330 if (!(ie.group_cipher & ssid->group_cipher)) {
331 wpa_printf(MSG_DEBUG, " skip WPA IE - GTK cipher "
332 "mismatch");
333 break;
336 if (!(ie.key_mgmt & ssid->key_mgmt)) {
337 wpa_printf(MSG_DEBUG, " skip WPA IE - key mgmt "
338 "mismatch");
339 break;
342 wpa_printf(MSG_DEBUG, " selected based on WPA IE");
343 return 1;
346 if (proto_match == 0)
347 wpa_printf(MSG_DEBUG, " skip - no WPA/RSN proto match");
349 return 0;
353 static struct wpa_scan_result *
354 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s, struct wpa_ssid *group,
355 struct wpa_scan_result *results, int num,
356 struct wpa_ssid **selected_ssid)
358 struct wpa_ssid *ssid;
359 struct wpa_scan_result *bss, *selected = NULL;
360 int i;
361 struct wpa_blacklist *e;
363 wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d",
364 group->priority);
366 bss = NULL;
367 ssid = NULL;
368 /* First, try to find WPA-enabled AP */
369 wpa_printf(MSG_DEBUG, "Try to find WPA-enabled AP");
370 for (i = 0; i < num && !selected; i++) {
371 bss = &results[i];
372 wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
373 "wpa_ie_len=%lu rsn_ie_len=%lu caps=0x%x",
374 i, MAC2STR(bss->bssid),
375 wpa_ssid_txt(bss->ssid, bss->ssid_len),
376 (unsigned long) bss->wpa_ie_len,
377 (unsigned long) bss->rsn_ie_len, bss->caps);
378 e = wpa_blacklist_get(wpa_s, bss->bssid);
379 if (e && e->count > 1) {
380 wpa_printf(MSG_DEBUG, " skip - blacklisted");
381 continue;
384 if (bss->wpa_ie_len == 0 && bss->rsn_ie_len == 0) {
385 wpa_printf(MSG_DEBUG, " skip - no WPA/RSN IE");
386 continue;
389 for (ssid = group; ssid; ssid = ssid->pnext) {
390 if (ssid->disabled) {
391 wpa_printf(MSG_DEBUG, " skip - disabled");
392 continue;
394 if (bss->ssid_len != ssid->ssid_len ||
395 os_memcmp(bss->ssid, ssid->ssid,
396 bss->ssid_len) != 0) {
397 wpa_printf(MSG_DEBUG, " skip - "
398 "SSID mismatch");
399 continue;
401 if (ssid->bssid_set &&
402 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
404 wpa_printf(MSG_DEBUG, " skip - "
405 "BSSID mismatch");
406 continue;
408 if (wpa_supplicant_ssid_bss_match(ssid, bss)) {
409 selected = bss;
410 *selected_ssid = ssid;
411 wpa_printf(MSG_DEBUG, " selected WPA AP "
412 MACSTR " ssid='%s'",
413 MAC2STR(bss->bssid),
414 wpa_ssid_txt(bss->ssid,
415 bss->ssid_len));
416 break;
421 /* If no WPA-enabled AP found, try to find non-WPA AP, if configuration
422 * allows this. */
423 wpa_printf(MSG_DEBUG, "Try to find non-WPA AP");
424 for (i = 0; i < num && !selected; i++) {
425 bss = &results[i];
426 wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
427 "wpa_ie_len=%lu rsn_ie_len=%lu caps=0x%x",
428 i, MAC2STR(bss->bssid),
429 wpa_ssid_txt(bss->ssid, bss->ssid_len),
430 (unsigned long) bss->wpa_ie_len,
431 (unsigned long) bss->rsn_ie_len, bss->caps);
432 e = wpa_blacklist_get(wpa_s, bss->bssid);
433 if (e && e->count > 1) {
434 wpa_printf(MSG_DEBUG, " skip - blacklisted");
435 continue;
437 for (ssid = group; ssid; ssid = ssid->pnext) {
438 if (ssid->disabled) {
439 wpa_printf(MSG_DEBUG, " skip - disabled");
440 continue;
442 if (bss->ssid_len != ssid->ssid_len ||
443 os_memcmp(bss->ssid, ssid->ssid,
444 bss->ssid_len) != 0) {
445 wpa_printf(MSG_DEBUG, " skip - "
446 "SSID mismatch");
447 continue;
450 if (ssid->bssid_set &&
451 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
453 wpa_printf(MSG_DEBUG, " skip - "
454 "BSSID mismatch");
455 continue;
458 if (!(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
459 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA))
461 wpa_printf(MSG_DEBUG, " skip - "
462 "non-WPA network not allowed");
463 continue;
466 if ((ssid->key_mgmt &
467 (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK)) ||
468 bss->wpa_ie_len != 0 || bss->rsn_ie_len != 0) {
469 wpa_printf(MSG_DEBUG, " skip - "
470 "WPA network");
471 continue;
474 if (!wpa_supplicant_match_privacy(bss, ssid)) {
475 wpa_printf(MSG_DEBUG, " skip - "
476 "privacy mismatch");
477 continue;
480 if (bss->caps & IEEE80211_CAP_IBSS) {
481 wpa_printf(MSG_DEBUG, " skip - "
482 "IBSS (adhoc) network");
483 continue;
486 selected = bss;
487 *selected_ssid = ssid;
488 wpa_printf(MSG_DEBUG, " selected non-WPA AP "
489 MACSTR " ssid='%s'",
490 MAC2STR(bss->bssid),
491 wpa_ssid_txt(bss->ssid, bss->ssid_len));
492 break;
496 return selected;
500 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s)
502 int num, prio, timeout;
503 struct wpa_scan_result *selected = NULL;
504 struct wpa_ssid *ssid = NULL;
505 struct wpa_scan_result *results;
507 if (wpa_supplicant_get_scan_results(wpa_s) < 0) {
508 if (wpa_s->conf->ap_scan == 2)
509 return;
510 wpa_printf(MSG_DEBUG, "Failed to get scan results - try "
511 "scanning again");
512 timeout = 1;
513 goto req_scan;
516 wpa_supplicant_dbus_notify_scan_results(wpa_s);
518 if (wpa_s->conf->ap_scan == 2)
519 return;
520 results = wpa_s->scan_results;
521 num = wpa_s->num_scan_results;
523 while (selected == NULL) {
524 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
525 selected = wpa_supplicant_select_bss(
526 wpa_s, wpa_s->conf->pssid[prio], results, num,
527 &ssid);
528 if (selected)
529 break;
532 if (selected == NULL && wpa_s->blacklist) {
533 wpa_printf(MSG_DEBUG, "No APs found - clear blacklist "
534 "and try again");
535 wpa_blacklist_clear(wpa_s);
536 } else if (selected == NULL) {
537 break;
541 if (selected) {
542 /* Do not trigger new association unless the BSSID has changed
543 * or if reassociation is requested. If we are in process of
544 * associating with the selected BSSID, do not trigger new
545 * attempt. */
546 if (wpa_s->reassociate ||
547 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
548 (wpa_s->wpa_state != WPA_ASSOCIATING ||
549 os_memcmp(selected->bssid, wpa_s->pending_bssid,
550 ETH_ALEN) != 0))) {
551 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
552 wpa_supplicant_req_scan(wpa_s, 10, 0);
553 return;
555 wpa_supplicant_associate(wpa_s, selected, ssid);
556 } else {
557 wpa_printf(MSG_DEBUG, "Already associated with the "
558 "selected AP.");
560 rsn_preauth_scan_results(wpa_s->wpa, results, num);
561 } else {
562 wpa_printf(MSG_DEBUG, "No suitable AP found.");
563 timeout = 5;
564 goto req_scan;
567 return;
569 req_scan:
570 if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1) {
572 * Quick recovery if the initial scan results were not
573 * complete when fetched before the first scan request.
575 wpa_s->scan_res_tried++;
576 timeout = 0;
578 wpa_supplicant_req_scan(wpa_s, timeout, 0);
582 static void wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
583 union wpa_event_data *data)
585 int l, len, found = 0, wpa_found, rsn_found;
586 u8 *p;
588 wpa_printf(MSG_DEBUG, "Association info event");
589 if (data->assoc_info.req_ies)
590 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
591 data->assoc_info.req_ies_len);
592 if (data->assoc_info.resp_ies)
593 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
594 data->assoc_info.resp_ies_len);
595 if (data->assoc_info.beacon_ies)
596 wpa_hexdump(MSG_DEBUG, "beacon_ies",
597 data->assoc_info.beacon_ies,
598 data->assoc_info.beacon_ies_len);
600 p = data->assoc_info.req_ies;
601 l = data->assoc_info.req_ies_len;
603 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
604 while (p && l >= 2) {
605 len = p[1] + 2;
606 if (len > l) {
607 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
608 p, l);
609 break;
611 if ((p[0] == GENERIC_INFO_ELEM && p[1] >= 6 &&
612 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
613 (p[0] == RSN_INFO_ELEM && p[1] >= 2)) {
614 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
615 break;
616 found = 1;
617 wpa_find_assoc_pmkid(wpa_s);
618 break;
620 l -= len;
621 p += len;
623 if (!found && data->assoc_info.req_ies)
624 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
626 /* WPA/RSN IE from Beacon/ProbeResp */
627 p = data->assoc_info.beacon_ies;
628 l = data->assoc_info.beacon_ies_len;
630 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
632 wpa_found = rsn_found = 0;
633 while (p && l >= 2) {
634 len = p[1] + 2;
635 if (len > l) {
636 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
637 p, l);
638 break;
640 if (!wpa_found &&
641 p[0] == GENERIC_INFO_ELEM && p[1] >= 6 &&
642 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
643 wpa_found = 1;
644 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
647 if (!rsn_found &&
648 p[0] == RSN_INFO_ELEM && p[1] >= 2) {
649 rsn_found = 1;
650 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
653 l -= len;
654 p += len;
657 if (!wpa_found && data->assoc_info.beacon_ies)
658 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
659 if (!rsn_found && data->assoc_info.beacon_ies)
660 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
664 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
665 union wpa_event_data *data)
667 u8 bssid[ETH_ALEN];
669 if (data)
670 wpa_supplicant_event_associnfo(wpa_s, data);
672 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
673 if (wpa_s->use_client_mlme)
674 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
675 if (wpa_s->use_client_mlme ||
676 (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
677 os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
678 wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
679 MACSTR, MAC2STR(bssid));
680 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
681 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
682 if (wpa_supplicant_dynamic_keys(wpa_s)) {
683 wpa_clear_keys(wpa_s, bssid);
685 if (wpa_supplicant_select_config(wpa_s) < 0) {
686 wpa_supplicant_disassociate(wpa_s,
687 REASON_DEAUTH_LEAVING);
688 return;
692 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
693 if (wpa_s->current_ssid) {
694 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
695 * initialized before association, but for other modes,
696 * initialize PC/SC here, if the current configuration needs
697 * smartcard or SIM/USIM. */
698 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
700 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
701 l2_packet_notify_auth_start(wpa_s->l2);
704 * Set portEnabled first to FALSE in order to get EAP state machine out
705 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
706 * state machine may transit to AUTHENTICATING state based on obsolete
707 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
708 * AUTHENTICATED without ever giving chance to EAP state machine to
709 * reset the state.
711 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
712 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
713 if (wpa_s->key_mgmt == WPA_KEY_MGMT_PSK)
714 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
715 /* 802.1X::portControl = Auto */
716 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
717 wpa_s->eapol_received = 0;
718 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
719 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
720 wpa_supplicant_cancel_auth_timeout(wpa_s);
721 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
722 } else {
723 /* Timeout for receiving the first EAPOL packet */
724 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
726 wpa_supplicant_cancel_scan(wpa_s);
730 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s)
732 const u8 *bssid;
734 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
736 * At least Host AP driver and a Prism3 card seemed to be
737 * generating streams of disconnected events when configuring
738 * IBSS for WPA-None. Ignore them for now.
740 wpa_printf(MSG_DEBUG, "Disconnect event - ignore in "
741 "IBSS/WPA-None mode");
742 return;
745 if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
746 wpa_s->key_mgmt == WPA_KEY_MGMT_PSK) {
747 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
748 "pre-shared key may be incorrect");
750 if (wpa_s->wpa_state >= WPA_ASSOCIATED)
751 wpa_supplicant_req_scan(wpa_s, 0, 100000);
752 bssid = wpa_s->bssid;
753 if (os_memcmp(bssid, "\x00\x00\x00\x00\x00\x00", ETH_ALEN) == 0)
754 bssid = wpa_s->pending_bssid;
755 wpa_blacklist_add(wpa_s, bssid);
756 wpa_sm_notify_disassoc(wpa_s->wpa);
757 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "- Disconnect event - "
758 "remove keys");
759 if (wpa_supplicant_dynamic_keys(wpa_s)) {
760 wpa_s->keys_cleared = 0;
761 wpa_clear_keys(wpa_s, wpa_s->bssid);
763 wpa_supplicant_mark_disassoc(wpa_s);
767 static void
768 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
769 union wpa_event_data *data)
771 int pairwise;
772 struct os_time t;
774 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
775 pairwise = (data && data->michael_mic_failure.unicast);
776 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
777 os_get_time(&t);
778 if (wpa_s->last_michael_mic_error &&
779 t.sec - wpa_s->last_michael_mic_error <= 60) {
780 /* initialize countermeasures */
781 wpa_s->countermeasures = 1;
782 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
785 * Need to wait for completion of request frame. We do not get
786 * any callback for the message completion, so just wait a
787 * short while and hope for the best. */
788 os_sleep(0, 10000);
790 wpa_drv_set_countermeasures(wpa_s, 1);
791 wpa_supplicant_deauthenticate(wpa_s,
792 REASON_MICHAEL_MIC_FAILURE);
793 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
794 wpa_s, NULL);
795 eloop_register_timeout(60, 0,
796 wpa_supplicant_stop_countermeasures,
797 wpa_s, NULL);
798 /* TODO: mark the AP rejected for 60 second. STA is
799 * allowed to associate with another AP.. */
801 wpa_s->last_michael_mic_error = t.sec;
805 static void
806 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
807 union wpa_event_data *data)
809 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
810 return;
812 switch (data->interface_status.ievent) {
813 case EVENT_INTERFACE_ADDED:
814 if (!wpa_s->interface_removed)
815 break;
816 wpa_s->interface_removed = 0;
817 wpa_printf(MSG_DEBUG, "Configured interface was added.");
818 if (wpa_supplicant_driver_init(wpa_s, 1) < 0) {
819 wpa_printf(MSG_INFO, "Failed to initialize the driver "
820 "after interface was added.");
822 break;
823 case EVENT_INTERFACE_REMOVED:
824 wpa_printf(MSG_DEBUG, "Configured interface was removed.");
825 wpa_s->interface_removed = 1;
826 wpa_supplicant_mark_disassoc(wpa_s);
827 l2_packet_deinit(wpa_s->l2);
828 wpa_s->l2 = NULL;
829 break;
834 #ifdef CONFIG_PEERKEY
835 static void
836 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
837 union wpa_event_data *data)
839 if (data == NULL)
840 return;
841 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
843 #endif /* CONFIG_PEERKEY */
846 void wpa_supplicant_event(struct wpa_supplicant *wpa_s, wpa_event_type event,
847 union wpa_event_data *data)
849 switch (event) {
850 case EVENT_ASSOC:
851 wpa_supplicant_event_assoc(wpa_s, data);
852 break;
853 case EVENT_DISASSOC:
854 wpa_supplicant_event_disassoc(wpa_s);
855 break;
856 case EVENT_MICHAEL_MIC_FAILURE:
857 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
858 break;
859 case EVENT_SCAN_RESULTS:
860 wpa_supplicant_event_scan_results(wpa_s);
861 break;
862 case EVENT_ASSOCINFO:
863 wpa_supplicant_event_associnfo(wpa_s, data);
864 break;
865 case EVENT_INTERFACE_STATUS:
866 wpa_supplicant_event_interface_status(wpa_s, data);
867 break;
868 case EVENT_PMKID_CANDIDATE:
869 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
870 break;
871 #ifdef CONFIG_PEERKEY
872 case EVENT_STKSTART:
873 wpa_supplicant_event_stkstart(wpa_s, data);
874 break;
875 #endif /* CONFIG_PEERKEY */
876 default:
877 wpa_printf(MSG_INFO, "Unknown event %d", event);
878 break;