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00015 #include "includes.h"
00016
00017 #include "common.h"
00018 #include "eapol_supp/eapol_supp_sm.h"
00019 #include "rsn_supp/wpa.h"
00020 #include "eloop.h"
00021 #include "config.h"
00022 #include "l2_packet/l2_packet.h"
00023 #include "wpa_supplicant_i.h"
00024 #include "driver_i.h"
00025 #include "pcsc_funcs.h"
00026 #include "rsn_supp/preauth.h"
00027 #include "rsn_supp/pmksa_cache.h"
00028 #include "common/wpa_ctrl.h"
00029 #include "eap_peer/eap.h"
00030 #include "ap/hostapd.h"
00031 #include "notify.h"
00032 #include "common/ieee802_11_defs.h"
00033 #include "blacklist.h"
00034 #include "wpas_glue.h"
00035 #include "wps_supplicant.h"
00036 #include "ibss_rsn.h"
00037 #include "sme.h"
00038 #include "bgscan.h"
00039 #include "ap.h"
00040 #include "bss.h"
00041 #include "mlme.h"
00042 #include "scan.h"
00043 #include "../../src/nodes/wpa_supplicant_node.h"
00044
00045 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
00046 {
00047 struct wpa_ssid *ssid, *old_ssid;
00048
00049 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
00050 return 0;
00051
00052 wpa_printf(MSG_DEBUG, "Select network based on association "
00053 "information");
00054 ssid = wpa_supplicant_get_ssid(wpa_s);
00055 if (ssid == NULL) {
00056 wpa_printf(MSG_INFO, "No network configuration found for the "
00057 "current AP");
00058 return -1;
00059 }
00060
00061 if (ssid->disabled) {
00062 wpa_printf(MSG_DEBUG, "Selected network is disabled");
00063 return -1;
00064 }
00065
00066 wpa_printf(MSG_DEBUG, "Network configuration found for the current "
00067 "AP");
00068 if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
00069 WPA_KEY_MGMT_WPA_NONE |
00070 WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
00071 WPA_KEY_MGMT_PSK_SHA256 |
00072 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
00073 u8 wpa_ie[80];
00074 size_t wpa_ie_len = sizeof(wpa_ie);
00075 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
00076 wpa_ie, &wpa_ie_len);
00077 } else {
00078 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
00079 }
00080
00081 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
00082 eapol_sm_invalidate_cached_session(wpa_s->eapol);
00083 old_ssid = wpa_s->current_ssid;
00084 wpa_s->current_ssid = ssid;
00085 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
00086 wpa_supplicant_initiate_eapol(wpa_s);
00087 if (old_ssid != wpa_s->current_ssid)
00088 wpas_notify_network_changed(wpa_s);
00089
00090 return 0;
00091 }
00092
00093
00094 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
00095 void *sock_ctx)
00096 {
00097 struct wpa_supplicant *wpa_s = eloop_ctx;
00098
00099 if (wpa_s->countermeasures) {
00100 wpa_s->countermeasures = 0;
00101 wpa_drv_set_countermeasures(wpa_s, 0);
00102 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
00103
00104 }
00105 }
00106
00107
00108 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
00109 {
00110 int bssid_changed;
00111
00112 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
00113 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
00114 os_memset(wpa_s->bssid, 0, ETH_ALEN);
00115 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
00116 wpa_s->current_bss = NULL;
00117 if (bssid_changed)
00118 wpas_notify_bssid_changed(wpa_s);
00119
00120 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
00121 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
00122 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
00123 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
00124 wpa_s->ap_ies_from_associnfo = 0;
00125 }
00126
00127
00128 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
00129 {
00130 struct wpa_ie_data ie;
00131 int pmksa_set = -1;
00132 size_t i;
00133
00134 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
00135 ie.pmkid == NULL)
00136 return;
00137
00138 for (i = 0; i < ie.num_pmkid; i++) {
00139 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
00140 ie.pmkid + i * PMKID_LEN,
00141 NULL, NULL, 0);
00142 if (pmksa_set == 0) {
00143 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
00144 break;
00145 }
00146 }
00147
00148 wpa_printf(MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from PMKSA "
00149 "cache", pmksa_set == 0 ? "" : "not ");
00150 }
00151
00152
00153 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
00154 union wpa_event_data *data)
00155 {
00156 if (data == NULL) {
00157 wpa_printf(MSG_DEBUG, "RSN: No data in PMKID candidate event");
00158 return;
00159 }
00160 wpa_printf(MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
00161 " index=%d preauth=%d",
00162 MAC2STR(data->pmkid_candidate.bssid),
00163 data->pmkid_candidate.index,
00164 data->pmkid_candidate.preauth);
00165
00166 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
00167 data->pmkid_candidate.index,
00168 data->pmkid_candidate.preauth);
00169 }
00170
00171
00172 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
00173 {
00174 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
00175 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
00176 return 0;
00177
00178 #ifdef IEEE8021X_EAPOL
00179 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
00180 wpa_s->current_ssid &&
00181 !(wpa_s->current_ssid->eapol_flags &
00182 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
00183 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
00184
00185
00186 return 0;
00187 }
00188 #endif
00189
00190 return 1;
00191 }
00192
00193
00203 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
00204 struct wpa_ssid *ssid)
00205 {
00206 #ifdef IEEE8021X_EAPOL
00207 int aka = 0, sim = 0, type;
00208
00209 if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
00210 return 0;
00211
00212 if (ssid->eap.eap_methods == NULL) {
00213 sim = 1;
00214 aka = 1;
00215 } else {
00216 struct eap_method_type *eap = ssid->eap.eap_methods;
00217 while (eap->vendor != EAP_VENDOR_IETF ||
00218 eap->method != EAP_TYPE_NONE) {
00219 if (eap->vendor == EAP_VENDOR_IETF) {
00220 if (eap->method == EAP_TYPE_SIM)
00221 sim = 1;
00222 else if (eap->method == EAP_TYPE_AKA)
00223 aka = 1;
00224 }
00225 eap++;
00226 }
00227 }
00228
00229 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
00230 sim = 0;
00231 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
00232 aka = 0;
00233
00234 if (!sim && !aka) {
00235 wpa_printf(MSG_DEBUG, "Selected network is configured to use "
00236 "SIM, but neither EAP-SIM nor EAP-AKA are enabled");
00237 return 0;
00238 }
00239
00240 wpa_printf(MSG_DEBUG, "Selected network is configured to use SIM "
00241 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
00242 if (sim && aka)
00243 type = SCARD_TRY_BOTH;
00244 else if (aka)
00245 type = SCARD_USIM_ONLY;
00246 else
00247 type = SCARD_GSM_SIM_ONLY;
00248
00249 wpa_s->scard = scard_init(type);
00250 if (wpa_s->scard == NULL) {
00251 wpa_printf(MSG_WARNING, "Failed to initialize SIM "
00252 "(pcsc-lite)");
00253 return -1;
00254 }
00255 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
00256 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
00257 #endif
00258
00259 return 0;
00260 }
00261
00262
00263 #ifndef CONFIG_NO_SCAN_PROCESSING
00264 #if 0
00265 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
00266 struct wpa_ssid *ssid)
00267 {
00268 int i, privacy = 0;
00269
00270 if (ssid->mixed_cell)
00271 return 1;
00272
00273 #ifdef CONFIG_WPS
00274 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
00275 return 1;
00276 #endif
00277
00278 for (i = 0; i < NUM_WEP_KEYS; i++) {
00279 if (ssid->wep_key_len[i]) {
00280 privacy = 1;
00281 break;
00282 }
00283 }
00284 #ifdef IEEE8021X_EAPOL
00285 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
00286 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
00287 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
00288 privacy = 1;
00289 #endif
00290
00291 if (bss->caps & IEEE80211_CAP_PRIVACY)
00292 return privacy;
00293 return !privacy;
00294 }
00295 #endif
00296
00297 #if 0
00298 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
00299 struct wpa_ssid *ssid,
00300 struct wpa_scan_res *bss)
00301 {
00302 struct wpa_ie_data ie;
00303 int proto_match = 0;
00304 const u8 *rsn_ie, *wpa_ie;
00305 int ret;
00306
00307 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
00308 if (ret >= 0)
00309 return ret;
00310
00311 rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
00312 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
00313 proto_match++;
00314
00315 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
00316 wpa_printf(MSG_DEBUG, " skip RSN IE - parse failed");
00317 break;
00318 }
00319 if (!(ie.proto & ssid->proto)) {
00320 wpa_printf(MSG_DEBUG, " skip RSN IE - proto "
00321 "mismatch");
00322 break;
00323 }
00324
00325 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
00326 wpa_printf(MSG_DEBUG, " skip RSN IE - PTK cipher "
00327 "mismatch");
00328 break;
00329 }
00330
00331 if (!(ie.group_cipher & ssid->group_cipher)) {
00332 wpa_printf(MSG_DEBUG, " skip RSN IE - GTK cipher "
00333 "mismatch");
00334 break;
00335 }
00336
00337 if (!(ie.key_mgmt & ssid->key_mgmt)) {
00338 wpa_printf(MSG_DEBUG, " skip RSN IE - key mgmt "
00339 "mismatch");
00340 break;
00341 }
00342
00343 #ifdef CONFIG_IEEE80211W
00344 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
00345 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
00346 wpa_printf(MSG_DEBUG, " skip RSN IE - no mgmt frame "
00347 "protection");
00348 break;
00349 }
00350 #endif
00351
00352 wpa_printf(MSG_DEBUG, " selected based on RSN IE");
00353 return 1;
00354 }
00355
00356 wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
00357 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
00358 proto_match++;
00359
00360 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
00361 wpa_printf(MSG_DEBUG, " skip WPA IE - parse failed");
00362 break;
00363 }
00364 if (!(ie.proto & ssid->proto)) {
00365 wpa_printf(MSG_DEBUG, " skip WPA IE - proto "
00366 "mismatch");
00367 break;
00368 }
00369
00370 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
00371 wpa_printf(MSG_DEBUG, " skip WPA IE - PTK cipher "
00372 "mismatch");
00373 break;
00374 }
00375
00376 if (!(ie.group_cipher & ssid->group_cipher)) {
00377 wpa_printf(MSG_DEBUG, " skip WPA IE - GTK cipher "
00378 "mismatch");
00379 break;
00380 }
00381
00382 if (!(ie.key_mgmt & ssid->key_mgmt)) {
00383 wpa_printf(MSG_DEBUG, " skip WPA IE - key mgmt "
00384 "mismatch");
00385 break;
00386 }
00387
00388 wpa_printf(MSG_DEBUG, " selected based on WPA IE");
00389 return 1;
00390 }
00391
00392 if (proto_match == 0)
00393 wpa_printf(MSG_DEBUG, " skip - no WPA/RSN proto match");
00394
00395 return 0;
00396 }
00397 #endif
00398
00399 #if 0
00400 static int freq_allowed(int *freqs, int freq)
00401 {
00402 int i;
00403
00404 if (freqs == NULL)
00405 return 1;
00406
00407 for (i = 0; freqs[i]; i++)
00408 if (freqs[i] == freq)
00409 return 1;
00410 return 0;
00411 }
00412 #endif
00413
00414 #if 0
00415 static struct wpa_bss *
00416 wpa_supplicant_select_bss_wpa(struct wpa_supplicant *wpa_s,
00417 struct wpa_scan_results *scan_res,
00418 struct wpa_ssid *group,
00419 struct wpa_ssid **selected_ssid)
00420 {
00421 struct wpa_ssid *ssid;
00422 struct wpa_scan_res *bss;
00423 size_t i;
00424 struct wpa_blacklist *e;
00425 const u8 *ie;
00426
00427 wpa_printf(MSG_DEBUG, "Try to find WPA-enabled AP");
00428 for (i = 0; i < scan_res->num; i++) {
00429 const u8 *ssid_;
00430 u8 wpa_ie_len, rsn_ie_len, ssid_len;
00431 bss = scan_res->res[i];
00432
00433 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
00434 ssid_ = ie ? ie + 2 : (u8 *) "";
00435 ssid_len = ie ? ie[1] : 0;
00436
00437 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
00438 wpa_ie_len = ie ? ie[1] : 0;
00439
00440 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
00441 rsn_ie_len = ie ? ie[1] : 0;
00442
00443 wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
00444 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
00445 (int) i, MAC2STR(bss->bssid),
00446 wpa_ssid_txt(ssid_, ssid_len),
00447 wpa_ie_len, rsn_ie_len, bss->caps);
00448
00449 e = wpa_blacklist_get(wpa_s, bss->bssid);
00450 if (e && e->count > 1) {
00451 wpa_printf(MSG_DEBUG, " skip - blacklisted");
00452 continue;
00453 }
00454
00455 if (ssid_len == 0) {
00456 wpa_printf(MSG_DEBUG, " skip - SSID not known");
00457 continue;
00458 }
00459
00460 if (wpa_ie_len == 0 && rsn_ie_len == 0) {
00461 wpa_printf(MSG_DEBUG, " skip - no WPA/RSN IE");
00462 continue;
00463 }
00464
00465 for (ssid = group; ssid; ssid = ssid->pnext) {
00466 int check_ssid = 1;
00467
00468 if (ssid->disabled) {
00469 wpa_printf(MSG_DEBUG, " skip - disabled");
00470 continue;
00471 }
00472
00473 #ifdef CONFIG_WPS
00474 if (ssid->ssid_len == 0 &&
00475 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
00476 check_ssid = 0;
00477 #endif
00478
00479 if (check_ssid &&
00480 (ssid_len != ssid->ssid_len ||
00481 os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
00482 wpa_printf(MSG_DEBUG, " skip - "
00483 "SSID mismatch");
00484 continue;
00485 }
00486
00487 if (ssid->bssid_set &&
00488 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
00489 {
00490 wpa_printf(MSG_DEBUG, " skip - "
00491 "BSSID mismatch");
00492 continue;
00493 }
00494
00495 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
00496 continue;
00497
00498 if (!freq_allowed(ssid->freq_list, bss->freq)) {
00499 wpa_printf(MSG_DEBUG, " skip - "
00500 "frequency not allowed");
00501 continue;
00502 }
00503
00504 wpa_printf(MSG_DEBUG, " selected WPA AP "
00505 MACSTR " ssid='%s'",
00506 MAC2STR(bss->bssid),
00507 wpa_ssid_txt(ssid_, ssid_len));
00508 *selected_ssid = ssid;
00509 return wpa_bss_get(wpa_s, bss->bssid, ssid_, ssid_len);
00510 }
00511 }
00512
00513 return NULL;
00514 }
00515 #endif
00516
00517 #if 0
00518 static struct wpa_bss *
00519 wpa_supplicant_select_bss_non_wpa(struct wpa_supplicant *wpa_s,
00520 struct wpa_scan_results *scan_res,
00521 struct wpa_ssid *group,
00522 struct wpa_ssid **selected_ssid)
00523 {
00524 struct wpa_ssid *ssid;
00525 struct wpa_scan_res *bss;
00526 size_t i;
00527 struct wpa_blacklist *e;
00528 const u8 *ie;
00529
00530 wpa_printf(MSG_DEBUG, "Try to find non-WPA AP");
00531 for (i = 0; i < scan_res->num; i++) {
00532 const u8 *ssid_;
00533 u8 wpa_ie_len, rsn_ie_len, ssid_len;
00534 bss = scan_res->res[i];
00535
00536 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
00537 ssid_ = ie ? ie + 2 : (u8 *) "";
00538 ssid_len = ie ? ie[1] : 0;
00539
00540 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
00541 wpa_ie_len = ie ? ie[1] : 0;
00542
00543 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
00544 rsn_ie_len = ie ? ie[1] : 0;
00545
00546 wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
00547 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
00548 (int) i, MAC2STR(bss->bssid),
00549 wpa_ssid_txt(ssid_, ssid_len),
00550 wpa_ie_len, rsn_ie_len, bss->caps);
00551
00552 e = wpa_blacklist_get(wpa_s, bss->bssid);
00553 if (e && e->count > 1) {
00554 wpa_printf(MSG_DEBUG, " skip - blacklisted");
00555 continue;
00556 }
00557
00558 if (ssid_len == 0) {
00559 wpa_printf(MSG_DEBUG, " skip - SSID not known");
00560 continue;
00561 }
00562
00563 for (ssid = group; ssid; ssid = ssid->pnext) {
00564 int check_ssid = ssid->ssid_len != 0;
00565
00566 if (ssid->disabled) {
00567 wpa_printf(MSG_DEBUG, " skip - disabled");
00568 continue;
00569 }
00570
00571 #ifdef CONFIG_WPS
00572 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
00573
00574
00575
00576 check_ssid = 1;
00577 if (ssid->ssid_len == 0 &&
00578 wpas_wps_ssid_wildcard_ok(wpa_s, ssid,
00579 bss))
00580 check_ssid = 0;
00581 }
00582 #endif
00583
00584 if (check_ssid &&
00585 (ssid_len != ssid->ssid_len ||
00586 os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
00587 wpa_printf(MSG_DEBUG, " skip - "
00588 "SSID mismatch");
00589 continue;
00590 }
00591
00592 if (ssid->bssid_set &&
00593 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
00594 {
00595 wpa_printf(MSG_DEBUG, " skip - "
00596 "BSSID mismatch");
00597 continue;
00598 }
00599
00600 if (!(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
00601 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
00602 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA))
00603 {
00604 wpa_printf(MSG_DEBUG, " skip - "
00605 "non-WPA network not allowed");
00606 continue;
00607 }
00608
00609 if ((ssid->key_mgmt &
00610 (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
00611 WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK |
00612 WPA_KEY_MGMT_IEEE8021X_SHA256 |
00613 WPA_KEY_MGMT_PSK_SHA256)) &&
00614 (wpa_ie_len != 0 || rsn_ie_len != 0)) {
00615 wpa_printf(MSG_DEBUG, " skip - "
00616 "WPA network");
00617 continue;
00618 }
00619
00620 if (!wpa_supplicant_match_privacy(bss, ssid)) {
00621 wpa_printf(MSG_DEBUG, " skip - "
00622 "privacy mismatch");
00623 continue;
00624 }
00625
00626 if (bss->caps & IEEE80211_CAP_IBSS) {
00627 wpa_printf(MSG_DEBUG, " skip - "
00628 "IBSS (adhoc) network");
00629 continue;
00630 }
00631
00632 if (!freq_allowed(ssid->freq_list, bss->freq)) {
00633 wpa_printf(MSG_DEBUG, " skip - "
00634 "frequency not allowed");
00635 continue;
00636 }
00637
00638 wpa_printf(MSG_DEBUG, " selected non-WPA AP "
00639 MACSTR " ssid='%s'",
00640 MAC2STR(bss->bssid),
00641 wpa_ssid_txt(ssid_, ssid_len));
00642 *selected_ssid = ssid;
00643 return wpa_bss_get(wpa_s, bss->bssid, ssid_, ssid_len);
00644 }
00645 }
00646
00647 return NULL;
00648 }
00649 #endif
00650
00651 #if 0
00652 static struct wpa_bss *
00653 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
00654 struct wpa_scan_results *scan_res,
00655 struct wpa_ssid *group,
00656 struct wpa_ssid **selected_ssid)
00657 {
00658 struct wpa_bss *selected;
00659
00660 wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d",
00661 group->priority);
00662
00663
00664 selected = wpa_supplicant_select_bss_wpa(wpa_s, scan_res, group,
00665 selected_ssid);
00666 if (selected)
00667 return selected;
00668
00669
00670
00671 return wpa_supplicant_select_bss_non_wpa(wpa_s, scan_res, group,
00672 selected_ssid);
00673 }
00674 #endif
00675
00676 #if 0
00677 static struct wpa_bss *
00678 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
00679 struct wpa_scan_results *scan_res,
00680 struct wpa_ssid **selected_ssid)
00681 {
00682 struct wpa_bss *selected = NULL;
00683 int prio;
00684
00685 while (selected == NULL) {
00686 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
00687 selected = wpa_supplicant_select_bss(
00688 wpa_s, scan_res, wpa_s->conf->pssid[prio],
00689 selected_ssid);
00690 if (selected)
00691 break;
00692 }
00693
00694 if (selected == NULL && wpa_s->blacklist) {
00695 wpa_printf(MSG_DEBUG, "No APs found - clear blacklist "
00696 "and try again");
00697 wpa_blacklist_clear(wpa_s);
00698 wpa_s->blacklist_cleared++;
00699 } else if (selected == NULL)
00700 break;
00701 }
00702
00703 return selected;
00704 }
00705 #endif
00706
00707 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
00708 int timeout_sec, int timeout_usec)
00709 {
00710 if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1) {
00711
00712
00713
00714
00715 wpa_s->scan_res_tried++;
00716 timeout_sec = 0;
00717 timeout_usec = 0;
00718 } else if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
00719
00720
00721
00722
00723
00724 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
00725 return;
00726 }
00727 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
00728 }
00729
00730
00731 void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
00732 struct wpa_bss *selected,
00733 struct wpa_ssid *ssid)
00734 {
00735 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
00736 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
00737 "PBC session overlap");
00738 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
00739 return;
00740 }
00741
00742
00743
00744
00745
00746
00747 if (wpa_s->reassociate ||
00748 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
00749 (wpa_s->wpa_state != WPA_ASSOCIATING ||
00750 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
00751 0))) {
00752 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
00753 wpa_supplicant_req_new_scan(wpa_s, 10, 0);
00754 return;
00755 }
00756 wpa_supplicant_associate(wpa_s, selected, ssid);
00757 } else {
00758 wpa_printf(MSG_DEBUG, "Already associated with the selected "
00759 "AP");
00760 }
00761 }
00762
00763
00764 #if 0
00765 static struct wpa_ssid *
00766 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
00767 {
00768 int prio;
00769 struct wpa_ssid *ssid;
00770
00771 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
00772 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
00773 {
00774 if (ssid->disabled)
00775 continue;
00776 if (ssid->mode == IEEE80211_MODE_IBSS ||
00777 ssid->mode == IEEE80211_MODE_AP)
00778 return ssid;
00779 }
00780 }
00781 return NULL;
00782 }
00783 #endif
00784
00785
00786
00787 static void wpa_supplicant_rsn_preauth_scan_results(
00788 struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res)
00789 {
00790 int i;
00791
00792 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
00793 return;
00794
00795 for (i = scan_res->num - 1; i >= 0; i--) {
00796 const u8 *ssid, *rsn;
00797 struct wpa_scan_res *r;
00798
00799 r = scan_res->res[i];
00800
00801 ssid = wpa_scan_get_ie(r, WLAN_EID_SSID);
00802 if (ssid == NULL)
00803 continue;
00804
00805 rsn = wpa_scan_get_ie(r, WLAN_EID_RSN);
00806 if (rsn == NULL)
00807 continue;
00808
00809 rsn_preauth_scan_result(wpa_s->wpa, r->bssid, ssid, rsn);
00810 }
00811
00812 }
00813
00814 #if 0
00815 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
00816 struct wpa_bss *selected,
00817 struct wpa_ssid *ssid,
00818 struct wpa_scan_results *scan_res)
00819 {
00820 size_t i;
00821 struct wpa_scan_res *current_bss = NULL;
00822 int min_diff;
00823
00824 if (wpa_s->reassociate)
00825 return 1;
00826 if (wpa_s->wpa_state < WPA_ASSOCIATED)
00827 return 1;
00828 if (wpa_s->current_ssid == NULL)
00829 return 1;
00830 if (wpa_s->current_ssid != ssid)
00831 return 1;
00832
00833 for (i = 0; i < scan_res->num; i++) {
00834 struct wpa_scan_res *res = scan_res->res[i];
00835 const u8 *ie;
00836 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
00837 continue;
00838
00839 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
00840 if (ie == NULL)
00841 continue;
00842 if (ie[1] != wpa_s->current_ssid->ssid_len ||
00843 os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
00844 continue;
00845 current_bss = res;
00846 break;
00847 }
00848
00849 if (!current_bss)
00850 return 1;
00851
00852 wpa_printf(MSG_DEBUG, "Considering within-ESS reassociation");
00853 wpa_printf(MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
00854 MAC2STR(current_bss->bssid), current_bss->level);
00855 wpa_printf(MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
00856 MAC2STR(selected->bssid), selected->level);
00857
00858 if (wpa_s->current_ssid->bssid_set &&
00859 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
00860 0) {
00861 wpa_printf(MSG_DEBUG, "Allow reassociation - selected BSS has "
00862 "preferred BSSID");
00863 return 1;
00864 }
00865
00866 min_diff = 2;
00867 if (current_bss->level < 0) {
00868 if (current_bss->level < -85)
00869 min_diff = 1;
00870 else if (current_bss->level < -80)
00871 min_diff = 2;
00872 else if (current_bss->level < -75)
00873 min_diff = 3;
00874 else if (current_bss->level < -70)
00875 min_diff = 4;
00876 else
00877 min_diff = 5;
00878 }
00879 if (abs(current_bss->level - selected->level) < min_diff) {
00880 wpa_printf(MSG_DEBUG, "Skip roam - too small difference in "
00881 "signal level");
00882 return 0;
00883 }
00884
00885 return 1;
00886 }
00887 #endif
00888
00889 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
00890 union wpa_event_data *data)
00891 {
00892
00893
00894 struct wpa_scan_results *scan_res;
00895
00896 wpa_supplicant_notify_scanning(wpa_s, 0);
00897
00898 scan_res = wpa_supplicant_get_scan_results(wpa_s,
00899 data ? &data->scan_info :
00900 NULL, 1);
00901
00902 ros_scan_completed(wpa_s, scan_res);
00903
00904 if (scan_res == NULL) {
00905 if (wpa_s->conf->ap_scan == 2)
00906 return;
00907 wpa_printf(MSG_DEBUG, "Failed to get scan results - don't bother try "
00908 "scanning again");
00909
00910 return;
00911 }
00912
00913 if (wpa_s->scan_res_handler) {
00914 wpa_s->scan_res_handler(wpa_s, scan_res);
00915 wpa_s->scan_res_handler = NULL;
00916 wpa_scan_results_free(scan_res);
00917 return;
00918 }
00919
00920
00921
00922
00923
00924 if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1 &&
00925 scan_res->num == 0) {
00926 wpa_msg(wpa_s, MSG_DEBUG, "Cached scan results are "
00927 "empty - not posting");
00928 } else {
00929 wpa_printf(MSG_DEBUG, "New scan results available");
00930 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
00931 wpas_notify_scan_results(wpa_s);
00932 }
00933
00934 wpas_notify_scan_done(wpa_s, 1);
00935
00936 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
00937 wpa_scan_results_free(scan_res);
00938 return;
00939 }
00940
00941 if (wpa_s->disconnected) {
00942 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
00943 wpa_scan_results_free(scan_res);
00944 return;
00945 }
00946
00947 if (bgscan_notify_scan(wpa_s) == 1) {
00948 wpa_scan_results_free(scan_res);
00949 return;
00950 }
00951
00952 wpa_supplicant_rsn_preauth_scan_results(wpa_s, scan_res);
00953
00954
00955
00956
00957
00958
00959
00960
00961
00962
00963
00964
00965
00966
00967
00968
00969
00970
00971
00972
00973
00974
00975
00976
00977
00978
00979
00980 }
00981 #endif
00982
00983
00984 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
00985 union wpa_event_data *data)
00986 {
00987 int l, len, found = 0, wpa_found, rsn_found;
00988 const u8 *p;
00989
00990 wpa_printf(MSG_DEBUG, "Association info event");
00991 if (data->assoc_info.req_ies)
00992 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
00993 data->assoc_info.req_ies_len);
00994 if (data->assoc_info.resp_ies)
00995 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
00996 data->assoc_info.resp_ies_len);
00997 if (data->assoc_info.beacon_ies)
00998 wpa_hexdump(MSG_DEBUG, "beacon_ies",
00999 data->assoc_info.beacon_ies,
01000 data->assoc_info.beacon_ies_len);
01001 if (data->assoc_info.freq)
01002 wpa_printf(MSG_DEBUG, "freq=%u MHz", data->assoc_info.freq);
01003
01004 p = data->assoc_info.req_ies;
01005 l = data->assoc_info.req_ies_len;
01006
01007
01008 while (p && l >= 2) {
01009 len = p[1] + 2;
01010 if (len > l) {
01011 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
01012 p, l);
01013 break;
01014 }
01015 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
01016 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
01017 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
01018 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
01019 break;
01020 found = 1;
01021 wpa_find_assoc_pmkid(wpa_s);
01022 break;
01023 }
01024 l -= len;
01025 p += len;
01026 }
01027 if (!found && data->assoc_info.req_ies)
01028 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
01029
01030 #ifdef CONFIG_IEEE80211R
01031 #ifdef CONFIG_SME
01032 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
01033 u8 bssid[ETH_ALEN];
01034 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
01035 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
01036 data->assoc_info.resp_ies,
01037 data->assoc_info.resp_ies_len,
01038 bssid) < 0) {
01039 wpa_printf(MSG_DEBUG, "FT: Validation of "
01040 "Reassociation Response failed");
01041 wpa_supplicant_deauthenticate(
01042 wpa_s, WLAN_REASON_INVALID_IE);
01043 return -1;
01044 }
01045 }
01046
01047 p = data->assoc_info.resp_ies;
01048 l = data->assoc_info.resp_ies_len;
01049
01050
01051 while (p && l >= 2) {
01052 len = p[1] + 2;
01053 if (len > l) {
01054 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
01055 p, l);
01056 break;
01057 }
01058 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
01059 p[1] >= MOBILITY_DOMAIN_ID_LEN) {
01060 wpa_s->sme.ft_used = 1;
01061 os_memcpy(wpa_s->sme.mobility_domain, p + 2,
01062 MOBILITY_DOMAIN_ID_LEN);
01063 break;
01064 }
01065 l -= len;
01066 p += len;
01067 }
01068 #endif
01069
01070 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
01071 data->assoc_info.resp_ies_len);
01072 #endif
01073
01074
01075 p = data->assoc_info.beacon_ies;
01076 l = data->assoc_info.beacon_ies_len;
01077
01078
01079
01080 wpa_found = rsn_found = 0;
01081 while (p && l >= 2) {
01082 len = p[1] + 2;
01083 if (len > l) {
01084 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
01085 p, l);
01086 break;
01087 }
01088 if (!wpa_found &&
01089 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
01090 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
01091 wpa_found = 1;
01092 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
01093 }
01094
01095 if (!rsn_found &&
01096 p[0] == WLAN_EID_RSN && p[1] >= 2) {
01097 rsn_found = 1;
01098 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
01099 }
01100
01101 l -= len;
01102 p += len;
01103 }
01104
01105 if (!wpa_found && data->assoc_info.beacon_ies)
01106 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
01107 if (!rsn_found && data->assoc_info.beacon_ies)
01108 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
01109 if (wpa_found || rsn_found)
01110 wpa_s->ap_ies_from_associnfo = 1;
01111
01112 wpa_s->assoc_freq = data->assoc_info.freq;
01113
01114 return 0;
01115 }
01116
01117
01118 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
01119 union wpa_event_data *data)
01120 {
01121 u8 bssid[ETH_ALEN];
01122 int ft_completed;
01123 int bssid_changed;
01124 struct wpa_driver_capa capa;
01125
01126 #ifdef CONFIG_AP
01127 if (wpa_s->ap_iface) {
01128 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
01129 data->assoc_info.addr,
01130 data->assoc_info.req_ies,
01131 data->assoc_info.req_ies_len);
01132 return;
01133 }
01134 #endif
01135
01136 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
01137 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
01138 return;
01139
01140 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
01141 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
01142 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
01143 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
01144 (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
01145 os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
01146 wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
01147 MACSTR, MAC2STR(bssid));
01148 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
01149 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
01150 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
01151 if (bssid_changed)
01152 wpas_notify_bssid_changed(wpa_s);
01153
01154 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
01155 wpa_clear_keys(wpa_s, bssid);
01156 }
01157 if (wpa_supplicant_select_config(wpa_s) < 0) {
01158 wpa_supplicant_disassociate(
01159 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
01160 return;
01161 }
01162 if (wpa_s->current_ssid) {
01163 struct wpa_bss *bss = NULL;
01164 struct wpa_ssid *ssid = wpa_s->current_ssid;
01165 if (ssid->ssid_len > 0)
01166 bss = wpa_bss_get(wpa_s, bssid,
01167 ssid->ssid, ssid->ssid_len);
01168 if (!bss)
01169 bss = wpa_bss_get_bssid(wpa_s, bssid);
01170 if (bss)
01171 wpa_s->current_bss = bss;
01172 }
01173 }
01174
01175 #ifdef CONFIG_SME
01176 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
01177 wpa_s->sme.prev_bssid_set = 1;
01178 wpa_msg(wpa_s, MSG_INFO, "prev_bssid set");
01179 #endif
01180
01181 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
01182 if (wpa_s->current_ssid) {
01183
01184
01185
01186
01187 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
01188 }
01189 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
01190 l2_packet_notify_auth_start(wpa_s->l2);
01191
01192
01193
01194
01195
01196
01197
01198
01199
01200 if (!ft_completed) {
01201 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
01202 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
01203 }
01204 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
01205 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
01206
01207 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
01208 wpa_s->eapol_received = 0;
01209 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
01210 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
01211 (wpa_s->current_ssid &&
01212 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
01213 wpa_supplicant_cancel_auth_timeout(wpa_s);
01214 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
01215 } else if (!ft_completed) {
01216
01217 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
01218 }
01219 wpa_supplicant_cancel_scan(wpa_s);
01220
01221 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
01222 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
01223
01224
01225
01226
01227 wpa_supplicant_cancel_auth_timeout(wpa_s);
01228 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
01229 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
01230 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
01231 }
01232
01233 if (wpa_s->pending_eapol_rx) {
01234 struct os_time now, age;
01235 os_get_time(&now);
01236 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
01237 if (age.sec == 0 && age.usec < 100000 &&
01238 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
01239 0) {
01240 wpa_printf(MSG_DEBUG, "Process pending EAPOL frame "
01241 "that was received just before association "
01242 "notification");
01243 wpa_supplicant_rx_eapol(
01244 wpa_s, wpa_s->pending_eapol_rx_src,
01245 wpabuf_head(wpa_s->pending_eapol_rx),
01246 wpabuf_len(wpa_s->pending_eapol_rx));
01247 }
01248 wpabuf_free(wpa_s->pending_eapol_rx);
01249 wpa_s->pending_eapol_rx = NULL;
01250 }
01251
01252 #ifdef CONFIG_BGSCAN
01253 if (wpa_s->current_ssid != wpa_s->bgscan_ssid) {
01254 bgscan_deinit(wpa_s);
01255 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
01256 if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
01257 wpa_printf(MSG_DEBUG, "Failed to initialize "
01258 "bgscan");
01259
01260
01261
01262
01263
01264 } else
01265 wpa_s->bgscan_ssid = wpa_s->current_ssid;
01266 } else
01267 wpa_s->bgscan_ssid = NULL;
01268 }
01269 #endif
01270
01271 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
01272 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
01273 wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
01274 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
01275
01276 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
01277 }
01278 }
01279
01280
01281 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
01282 u16 reason_code)
01283 {
01284 const u8 *bssid;
01285 #ifdef CONFIG_SME
01286 int authenticating;
01287 u8 prev_pending_bssid[ETH_ALEN];
01288
01289 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
01290 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
01291 #endif
01292
01293 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
01294
01295
01296
01297
01298
01299 wpa_printf(MSG_DEBUG, "Disconnect event - ignore in "
01300 "IBSS/WPA-None mode");
01301 return;
01302 }
01303
01304 if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
01305 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
01306 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
01307 "pre-shared key may be incorrect");
01308 }
01309
01310
01311 bssid = wpa_s->bssid;
01312 if (is_zero_ether_addr(bssid))
01313 bssid = wpa_s->pending_bssid;
01314 wpa_blacklist_add(wpa_s, bssid);
01315 wpa_sm_notify_disassoc(wpa_s->wpa);
01316 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
01317 " reason=%d",
01318 MAC2STR(bssid), reason_code);
01319 if (wpa_supplicant_dynamic_keys(wpa_s)) {
01320 wpa_printf(MSG_DEBUG, "Disconnect event - remove keys");
01321 wpa_s->keys_cleared = 0;
01322 wpa_clear_keys(wpa_s, wpa_s->bssid);
01323 }
01324
01325
01326
01327 wpa_supplicant_mark_disassoc(wpa_s);
01328 bgscan_deinit(wpa_s);
01329 #ifdef CONFIG_SME
01330
01331
01332
01333
01334
01335
01336
01337
01338
01339
01340
01341
01342 #endif
01343 }
01344
01345
01346 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
01347 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
01348 void *sock_ctx)
01349 {
01350 struct wpa_supplicant *wpa_s = eloop_ctx;
01351
01352 if (!wpa_s->pending_mic_error_report)
01353 return;
01354
01355 wpa_printf(MSG_DEBUG, "WPA: Sending pending MIC error report");
01356 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
01357 wpa_s->pending_mic_error_report = 0;
01358 }
01359 #endif
01360
01361
01362 static void
01363 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
01364 union wpa_event_data *data)
01365 {
01366 int pairwise;
01367 struct os_time t;
01368
01369 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
01370 pairwise = (data && data->michael_mic_failure.unicast);
01371 os_get_time(&t);
01372 if ((wpa_s->last_michael_mic_error &&
01373 t.sec - wpa_s->last_michael_mic_error <= 60) ||
01374 wpa_s->pending_mic_error_report) {
01375 if (wpa_s->pending_mic_error_report) {
01376
01377
01378
01379
01380
01381 wpa_sm_key_request(wpa_s->wpa, 1,
01382 wpa_s->pending_mic_error_pairwise);
01383 }
01384
01385
01386
01387
01388 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
01389
01390
01391 wpa_s->countermeasures = 1;
01392 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
01393
01394
01395
01396
01397
01398 os_sleep(0, 10000);
01399
01400 wpa_drv_set_countermeasures(wpa_s, 1);
01401 wpa_supplicant_deauthenticate(wpa_s,
01402 WLAN_REASON_MICHAEL_MIC_FAILURE);
01403 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
01404 wpa_s, NULL);
01405 eloop_register_timeout(60, 0,
01406 wpa_supplicant_stop_countermeasures,
01407 wpa_s, NULL);
01408
01409
01410 } else {
01411 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
01412 if (wpa_s->mic_errors_seen) {
01413
01414
01415
01416
01417
01418
01419
01420
01421
01422
01423 u8 rval[4];
01424 int sec;
01425
01426 if (os_get_random(rval, sizeof(rval)) < 0)
01427 sec = os_random() % 60;
01428 else
01429 sec = WPA_GET_BE32(rval) % 60;
01430 wpa_printf(MSG_DEBUG, "WPA: Delay MIC error report %d "
01431 "seconds", sec);
01432 wpa_s->pending_mic_error_report = 1;
01433 wpa_s->pending_mic_error_pairwise = pairwise;
01434 eloop_cancel_timeout(
01435 wpa_supplicant_delayed_mic_error_report,
01436 wpa_s, NULL);
01437 eloop_register_timeout(
01438 sec, os_random() % 1000000,
01439 wpa_supplicant_delayed_mic_error_report,
01440 wpa_s, NULL);
01441 } else {
01442 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
01443 }
01444 #else
01445 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
01446 #endif
01447 }
01448 wpa_s->last_michael_mic_error = t.sec;
01449 wpa_s->mic_errors_seen++;
01450 }
01451
01452
01453 #ifdef CONFIG_TERMINATE_ONLASTIF
01454 static int any_interfaces(struct wpa_supplicant *head)
01455 {
01456 struct wpa_supplicant *wpa_s;
01457
01458 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
01459 if (!wpa_s->interface_removed)
01460 return 1;
01461 return 0;
01462 }
01463 #endif
01464
01465
01466 static void
01467 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
01468 union wpa_event_data *data)
01469 {
01470 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
01471 return;
01472
01473 switch (data->interface_status.ievent) {
01474 case EVENT_INTERFACE_ADDED:
01475 if (!wpa_s->interface_removed)
01476 break;
01477 wpa_s->interface_removed = 0;
01478 wpa_printf(MSG_DEBUG, "Configured interface was added.");
01479 if (wpa_supplicant_driver_init(wpa_s) < 0) {
01480 wpa_printf(MSG_INFO, "Failed to initialize the driver "
01481 "after interface was added.");
01482 }
01483 break;
01484 case EVENT_INTERFACE_REMOVED:
01485 wpa_printf(MSG_DEBUG, "Configured interface was removed.");
01486 wpa_s->interface_removed = 1;
01487 wpa_supplicant_mark_disassoc(wpa_s);
01488 l2_packet_deinit(wpa_s->l2);
01489 wpa_s->l2 = NULL;
01490 #ifdef CONFIG_TERMINATE_ONLASTIF
01491
01492 if (!any_interfaces(wpa_s->global->ifaces))
01493 eloop_terminate();
01494 #endif
01495 break;
01496 }
01497 }
01498
01499
01500 #ifdef CONFIG_PEERKEY
01501 static void
01502 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
01503 union wpa_event_data *data)
01504 {
01505 if (data == NULL)
01506 return;
01507 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
01508 }
01509 #endif
01510
01511
01512 #ifdef CONFIG_IEEE80211R
01513 static void
01514 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
01515 union wpa_event_data *data)
01516 {
01517 if (data == NULL)
01518 return;
01519
01520 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
01521 data->ft_ies.ies_len,
01522 data->ft_ies.ft_action,
01523 data->ft_ies.target_ap,
01524 data->ft_ies.ric_ies,
01525 data->ft_ies.ric_ies_len) < 0) {
01526
01527 }
01528 }
01529 #endif
01530
01531
01532 #ifdef CONFIG_IBSS_RSN
01533 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
01534 union wpa_event_data *data)
01535 {
01536 if (data == NULL)
01537 return;
01538 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
01539 }
01540 #endif
01541
01542
01543 #ifdef CONFIG_IEEE80211R
01544 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
01545 size_t len)
01546 {
01547 const u8 *sta_addr, *target_ap_addr;
01548 u16 status;
01549
01550 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
01551 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
01552 return;
01553 if (len < 1 + 2 * ETH_ALEN + 2)
01554 return;
01555 if (data[0] != 2)
01556 return;
01557 sta_addr = data + 1;
01558 target_ap_addr = data + 1 + ETH_ALEN;
01559 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
01560 wpa_printf(MSG_DEBUG, "FT: Received FT Action Response: STA " MACSTR
01561 " TargetAP " MACSTR " status %u",
01562 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
01563
01564 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
01565 wpa_printf(MSG_DEBUG, "FT: Foreign STA Address " MACSTR
01566 " in FT Action Response", MAC2STR(sta_addr));
01567 return;
01568 }
01569
01570 if (status) {
01571 wpa_printf(MSG_DEBUG, "FT: FT Action Response indicates "
01572 "failure (status code %d)", status);
01573
01574 return;
01575 }
01576
01577 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
01578 len - (1 + 2 * ETH_ALEN + 2), 1,
01579 target_ap_addr, NULL, 0) < 0)
01580 return;
01581
01582 #ifdef CONFIG_SME
01583 {
01584 struct wpa_bss *bss;
01585 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
01586 if (bss)
01587 wpa_s->sme.freq = bss->freq;
01588 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
01589 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
01590 WLAN_AUTH_FT);
01591 }
01592 #endif
01593 }
01594 #endif
01595
01596
01597 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
01598 union wpa_event_data *data)
01599 {
01600 struct wpa_supplicant *wpa_s = ctx;
01601 u16 reason_code = 0;
01602 struct u8 *event_bssid;
01603
01604 switch (event) {
01605 case EVENT_AUTH:
01606 sme_event_auth(wpa_s, data);
01607 break;
01608 case EVENT_ASSOC:
01609 wpa_supplicant_event_assoc(wpa_s, data);
01610 break;
01611 case EVENT_DISASSOC:
01612 wpa_printf(MSG_DEBUG, "Disassociation notification");
01613 #ifdef CONFIG_AP
01614 if (wpa_s->ap_iface && data) {
01615 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
01616 data->disassoc_info.addr);
01617 break;
01618 }
01619 #endif
01620 if (data) {
01621 reason_code = data->disassoc_info.reason_code;
01622 event_bssid = data->disassoc_info.addr;
01623 }
01624 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
01625 sme_event_disassoc(wpa_s, data);
01626
01627 case EVENT_DEAUTH:
01628 if (event == EVENT_DEAUTH) {
01629 wpa_printf(MSG_DEBUG, "Deauthentication notification");
01630 if (data) {
01631 reason_code = data->deauth_info.reason_code;
01632 event_bssid = data->deauth_info.addr;
01633 }
01634 }
01635 if (wpa_s->current_bss && event_bssid && os_memcmp(wpa_s->current_bss->bssid, event_bssid, ETH_ALEN))
01636 break;
01637 #ifdef CONFIG_AP
01638 if (wpa_s->ap_iface && data) {
01639 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
01640 data->deauth_info.addr);
01641 break;
01642 }
01643 #endif
01644 wpa_supplicant_event_disassoc(wpa_s, reason_code);
01645 break;
01646 case EVENT_MICHAEL_MIC_FAILURE:
01647 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
01648 break;
01649 #ifndef CONFIG_NO_SCAN_PROCESSING
01650 case EVENT_SCAN_RESULTS:
01651 wpa_supplicant_event_scan_results(wpa_s, data);
01652 break;
01653 #endif
01654 case EVENT_ASSOCINFO:
01655 wpa_supplicant_event_associnfo(wpa_s, data);
01656 break;
01657 case EVENT_INTERFACE_STATUS:
01658 wpa_supplicant_event_interface_status(wpa_s, data);
01659 break;
01660 case EVENT_PMKID_CANDIDATE:
01661 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
01662 break;
01663 #ifdef CONFIG_PEERKEY
01664 case EVENT_STKSTART:
01665 wpa_supplicant_event_stkstart(wpa_s, data);
01666 break;
01667 #endif
01668 #ifdef CONFIG_IEEE80211R
01669 case EVENT_FT_RESPONSE:
01670 wpa_supplicant_event_ft_response(wpa_s, data);
01671 break;
01672 #endif
01673 #ifdef CONFIG_IBSS_RSN
01674 case EVENT_IBSS_RSN_START:
01675 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
01676 break;
01677 #endif
01678 case EVENT_ASSOC_REJECT:
01679 sme_event_assoc_reject(wpa_s, data);
01680 break;
01681 case EVENT_AUTH_TIMED_OUT:
01682 sme_event_auth_timed_out(wpa_s, data);
01683 break;
01684 case EVENT_ASSOC_TIMED_OUT:
01685 sme_event_assoc_timed_out(wpa_s, data);
01686 break;
01687 #ifdef CONFIG_AP
01688 case EVENT_TX_STATUS:
01689 if (wpa_s->ap_iface == NULL)
01690 break;
01691 switch (data->tx_status.type) {
01692 case WLAN_FC_TYPE_MGMT:
01693 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
01694 data->tx_status.data_len,
01695 data->tx_status.stype,
01696 data->tx_status.ack);
01697 break;
01698 case WLAN_FC_TYPE_DATA:
01699 ap_tx_status(wpa_s, data->tx_status.dst,
01700 data->tx_status.data,
01701 data->tx_status.data_len,
01702 data->tx_status.ack);
01703 break;
01704 }
01705 break;
01706 case EVENT_RX_FROM_UNKNOWN:
01707 if (wpa_s->ap_iface == NULL)
01708 break;
01709 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
01710 data->rx_from_unknown.len);
01711 break;
01712 case EVENT_RX_MGMT:
01713 if (wpa_s->ap_iface == NULL)
01714 break;
01715 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
01716 break;
01717 #endif
01718 case EVENT_RX_ACTION:
01719 wpa_printf(MSG_DEBUG, "Received Action frame: SA=" MACSTR
01720 " Category=%u DataLen=%d freq=%d MHz",
01721 MAC2STR(data->rx_action.sa),
01722 data->rx_action.category, (int) data->rx_action.len,
01723 data->rx_action.freq);
01724 #ifdef CONFIG_IEEE80211R
01725 if (data->rx_action.category == WLAN_ACTION_FT) {
01726 ft_rx_action(wpa_s, data->rx_action.data,
01727 data->rx_action.len);
01728 break;
01729 }
01730 #endif
01731 break;
01732 #ifdef CONFIG_CLIENT_MLME
01733 case EVENT_MLME_RX: {
01734 struct ieee80211_rx_status rx_status;
01735 os_memset(&rx_status, 0, sizeof(rx_status));
01736 rx_status.freq = data->mlme_rx.freq;
01737 rx_status.channel = data->mlme_rx.channel;
01738 rx_status.ssi = data->mlme_rx.ssi;
01739 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
01740 &rx_status);
01741 break;
01742 }
01743 #endif
01744 case EVENT_EAPOL_RX:
01745 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
01746 data->eapol_rx.data,
01747 data->eapol_rx.data_len);
01748 break;
01749 case EVENT_SIGNAL_CHANGE:
01750 bgscan_notify_signal_change(
01751 wpa_s, data->signal_change.above_threshold);
01752 break;
01753 default:
01754 wpa_printf(MSG_INFO, "Unknown event %d", event);
01755 break;
01756 }
01757 }
