1 /* 2 * WPA Supplicant - Driver event processing 3 * Copyright (c) 2003-2015, 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 "fst/fst.h" 27 #include "wnm_sta.h" 28 #include "notify.h" 29 #include "common/ieee802_11_defs.h" 30 #include "common/ieee802_11_common.h" 31 #include "crypto/random.h" 32 #include "blacklist.h" 33 #include "wpas_glue.h" 34 #include "wps_supplicant.h" 35 #include "ibss_rsn.h" 36 #include "sme.h" 37 #include "gas_query.h" 38 #include "p2p_supplicant.h" 39 #include "bgscan.h" 40 #include "autoscan.h" 41 #include "ap.h" 42 #include "bss.h" 43 #include "scan.h" 44 #include "offchannel.h" 45 #include "interworking.h" 46 #include "mesh.h" 47 #include "mesh_mpm.h" 48 #include "wmm_ac.h" 49 50 51 #ifndef CONFIG_NO_SCAN_PROCESSING 52 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s, 53 int new_scan, int own_request); 54 #endif /* CONFIG_NO_SCAN_PROCESSING */ 55 56 57 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s, 58 struct wpa_ssid *ssid) 59 { 60 struct os_reltime now; 61 62 if (ssid == NULL || ssid->disabled_until.sec == 0) 63 return 0; 64 65 os_get_reltime(&now); 66 if (ssid->disabled_until.sec > now.sec) 67 return ssid->disabled_until.sec - now.sec; 68 69 wpas_clear_temp_disabled(wpa_s, ssid, 0); 70 71 return 0; 72 } 73 74 75 /** 76 * wpas_reenabled_network_time - Time until first network is re-enabled 77 * @wpa_s: Pointer to wpa_supplicant data 78 * Returns: If all enabled networks are temporarily disabled, returns the time 79 * (in sec) until the first network is re-enabled. Otherwise returns 0. 80 * 81 * This function is used in case all enabled networks are temporarily disabled, 82 * in which case it returns the time (in sec) that the first network will be 83 * re-enabled. The function assumes that at least one network is enabled. 84 */ 85 static int wpas_reenabled_network_time(struct wpa_supplicant *wpa_s) 86 { 87 struct wpa_ssid *ssid; 88 int disabled_for, res = 0; 89 90 #ifdef CONFIG_INTERWORKING 91 if (wpa_s->conf->auto_interworking && wpa_s->conf->interworking && 92 wpa_s->conf->cred) 93 return 0; 94 #endif /* CONFIG_INTERWORKING */ 95 96 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 97 if (ssid->disabled) 98 continue; 99 100 disabled_for = wpas_temp_disabled(wpa_s, ssid); 101 if (!disabled_for) 102 return 0; 103 104 if (!res || disabled_for < res) 105 res = disabled_for; 106 } 107 108 return res; 109 } 110 111 112 void wpas_network_reenabled(void *eloop_ctx, void *timeout_ctx) 113 { 114 struct wpa_supplicant *wpa_s = eloop_ctx; 115 116 if (wpa_s->disconnected || wpa_s->wpa_state != WPA_SCANNING) 117 return; 118 119 wpa_dbg(wpa_s, MSG_DEBUG, 120 "Try to associate due to network getting re-enabled"); 121 if (wpa_supplicant_fast_associate(wpa_s) != 1) { 122 wpa_supplicant_cancel_sched_scan(wpa_s); 123 wpa_supplicant_req_scan(wpa_s, 0, 0); 124 } 125 } 126 127 128 static struct wpa_bss * wpa_supplicant_get_new_bss( 129 struct wpa_supplicant *wpa_s, const u8 *bssid) 130 { 131 struct wpa_bss *bss = NULL; 132 struct wpa_ssid *ssid = wpa_s->current_ssid; 133 134 if (ssid->ssid_len > 0) 135 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len); 136 if (!bss) 137 bss = wpa_bss_get_bssid(wpa_s, bssid); 138 139 return bss; 140 } 141 142 143 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s) 144 { 145 struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid); 146 147 if (!bss) { 148 wpa_supplicant_update_scan_results(wpa_s); 149 150 /* Get the BSS from the new scan results */ 151 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid); 152 } 153 154 if (bss) 155 wpa_s->current_bss = bss; 156 } 157 158 159 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s) 160 { 161 struct wpa_ssid *ssid, *old_ssid; 162 u8 drv_ssid[SSID_MAX_LEN]; 163 size_t drv_ssid_len; 164 int res; 165 166 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) { 167 wpa_supplicant_update_current_bss(wpa_s); 168 169 if (wpa_s->current_ssid->ssid_len == 0) 170 return 0; /* current profile still in use */ 171 res = wpa_drv_get_ssid(wpa_s, drv_ssid); 172 if (res < 0) { 173 wpa_msg(wpa_s, MSG_INFO, 174 "Failed to read SSID from driver"); 175 return 0; /* try to use current profile */ 176 } 177 drv_ssid_len = res; 178 179 if (drv_ssid_len == wpa_s->current_ssid->ssid_len && 180 os_memcmp(drv_ssid, wpa_s->current_ssid->ssid, 181 drv_ssid_len) == 0) 182 return 0; /* current profile still in use */ 183 184 wpa_msg(wpa_s, MSG_DEBUG, 185 "Driver-initiated BSS selection changed the SSID to %s", 186 wpa_ssid_txt(drv_ssid, drv_ssid_len)); 187 /* continue selecting a new network profile */ 188 } 189 190 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association " 191 "information"); 192 ssid = wpa_supplicant_get_ssid(wpa_s); 193 if (ssid == NULL) { 194 wpa_msg(wpa_s, MSG_INFO, 195 "No network configuration found for the current AP"); 196 return -1; 197 } 198 199 if (wpas_network_disabled(wpa_s, ssid)) { 200 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled"); 201 return -1; 202 } 203 204 if (disallowed_bssid(wpa_s, wpa_s->bssid) || 205 disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) { 206 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed"); 207 return -1; 208 } 209 210 res = wpas_temp_disabled(wpa_s, ssid); 211 if (res > 0) { 212 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily " 213 "disabled for %d second(s)", res); 214 return -1; 215 } 216 217 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the " 218 "current AP"); 219 if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { 220 u8 wpa_ie[80]; 221 size_t wpa_ie_len = sizeof(wpa_ie); 222 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, 223 wpa_ie, &wpa_ie_len) < 0) 224 wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites"); 225 } else { 226 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 227 } 228 229 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) 230 eapol_sm_invalidate_cached_session(wpa_s->eapol); 231 old_ssid = wpa_s->current_ssid; 232 wpa_s->current_ssid = ssid; 233 234 wpa_supplicant_update_current_bss(wpa_s); 235 236 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 237 wpa_supplicant_initiate_eapol(wpa_s); 238 if (old_ssid != wpa_s->current_ssid) 239 wpas_notify_network_changed(wpa_s); 240 241 return 0; 242 } 243 244 245 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx) 246 { 247 struct wpa_supplicant *wpa_s = eloop_ctx; 248 249 if (wpa_s->countermeasures) { 250 wpa_s->countermeasures = 0; 251 wpa_drv_set_countermeasures(wpa_s, 0); 252 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped"); 253 254 /* 255 * It is possible that the device is sched scanning, which means 256 * that a connection attempt will be done only when we receive 257 * scan results. However, in this case, it would be preferable 258 * to scan and connect immediately, so cancel the sched_scan and 259 * issue a regular scan flow. 260 */ 261 wpa_supplicant_cancel_sched_scan(wpa_s); 262 wpa_supplicant_req_scan(wpa_s, 0, 0); 263 } 264 } 265 266 267 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s) 268 { 269 int bssid_changed; 270 271 wnm_bss_keep_alive_deinit(wpa_s); 272 273 #ifdef CONFIG_IBSS_RSN 274 ibss_rsn_deinit(wpa_s->ibss_rsn); 275 wpa_s->ibss_rsn = NULL; 276 #endif /* CONFIG_IBSS_RSN */ 277 278 #ifdef CONFIG_AP 279 wpa_supplicant_ap_deinit(wpa_s); 280 #endif /* CONFIG_AP */ 281 282 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 283 return; 284 285 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 286 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 287 os_memset(wpa_s->bssid, 0, ETH_ALEN); 288 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 289 sme_clear_on_disassoc(wpa_s); 290 wpa_s->current_bss = NULL; 291 wpa_s->assoc_freq = 0; 292 293 if (bssid_changed) 294 wpas_notify_bssid_changed(wpa_s); 295 296 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 297 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 298 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) 299 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 300 wpa_s->ap_ies_from_associnfo = 0; 301 wpa_s->current_ssid = NULL; 302 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 303 wpa_s->key_mgmt = 0; 304 305 wpas_rrm_reset(wpa_s); 306 } 307 308 309 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s) 310 { 311 struct wpa_ie_data ie; 312 int pmksa_set = -1; 313 size_t i; 314 315 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 || 316 ie.pmkid == NULL) 317 return; 318 319 for (i = 0; i < ie.num_pmkid; i++) { 320 pmksa_set = pmksa_cache_set_current(wpa_s->wpa, 321 ie.pmkid + i * PMKID_LEN, 322 NULL, NULL, 0); 323 if (pmksa_set == 0) { 324 eapol_sm_notify_pmkid_attempt(wpa_s->eapol); 325 break; 326 } 327 } 328 329 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from " 330 "PMKSA cache", pmksa_set == 0 ? "" : "not "); 331 } 332 333 334 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s, 335 union wpa_event_data *data) 336 { 337 if (data == NULL) { 338 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate " 339 "event"); 340 return; 341 } 342 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR 343 " index=%d preauth=%d", 344 MAC2STR(data->pmkid_candidate.bssid), 345 data->pmkid_candidate.index, 346 data->pmkid_candidate.preauth); 347 348 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid, 349 data->pmkid_candidate.index, 350 data->pmkid_candidate.preauth); 351 } 352 353 354 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s) 355 { 356 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 357 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) 358 return 0; 359 360 #ifdef IEEE8021X_EAPOL 361 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA && 362 wpa_s->current_ssid && 363 !(wpa_s->current_ssid->eapol_flags & 364 (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 365 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) { 366 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either 367 * plaintext or static WEP keys). */ 368 return 0; 369 } 370 #endif /* IEEE8021X_EAPOL */ 371 372 return 1; 373 } 374 375 376 /** 377 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC 378 * @wpa_s: pointer to wpa_supplicant data 379 * @ssid: Configuration data for the network 380 * Returns: 0 on success, -1 on failure 381 * 382 * This function is called when starting authentication with a network that is 383 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA). 384 */ 385 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s, 386 struct wpa_ssid *ssid) 387 { 388 #ifdef IEEE8021X_EAPOL 389 #ifdef PCSC_FUNCS 390 int aka = 0, sim = 0; 391 392 if ((ssid != NULL && ssid->eap.pcsc == NULL) || 393 wpa_s->scard != NULL || wpa_s->conf->external_sim) 394 return 0; 395 396 if (ssid == NULL || ssid->eap.eap_methods == NULL) { 397 sim = 1; 398 aka = 1; 399 } else { 400 struct eap_method_type *eap = ssid->eap.eap_methods; 401 while (eap->vendor != EAP_VENDOR_IETF || 402 eap->method != EAP_TYPE_NONE) { 403 if (eap->vendor == EAP_VENDOR_IETF) { 404 if (eap->method == EAP_TYPE_SIM) 405 sim = 1; 406 else if (eap->method == EAP_TYPE_AKA || 407 eap->method == EAP_TYPE_AKA_PRIME) 408 aka = 1; 409 } 410 eap++; 411 } 412 } 413 414 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL) 415 sim = 0; 416 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL && 417 eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) == 418 NULL) 419 aka = 0; 420 421 if (!sim && !aka) { 422 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to " 423 "use SIM, but neither EAP-SIM nor EAP-AKA are " 424 "enabled"); 425 return 0; 426 } 427 428 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM " 429 "(sim=%d aka=%d) - initialize PCSC", sim, aka); 430 431 wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader); 432 if (wpa_s->scard == NULL) { 433 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM " 434 "(pcsc-lite)"); 435 return -1; 436 } 437 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard); 438 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard); 439 #endif /* PCSC_FUNCS */ 440 #endif /* IEEE8021X_EAPOL */ 441 442 return 0; 443 } 444 445 446 #ifndef CONFIG_NO_SCAN_PROCESSING 447 448 static int has_wep_key(struct wpa_ssid *ssid) 449 { 450 int i; 451 452 for (i = 0; i < NUM_WEP_KEYS; i++) { 453 if (ssid->wep_key_len[i]) 454 return 1; 455 } 456 457 return 0; 458 } 459 460 461 static int wpa_supplicant_match_privacy(struct wpa_bss *bss, 462 struct wpa_ssid *ssid) 463 { 464 int privacy = 0; 465 466 if (ssid->mixed_cell) 467 return 1; 468 469 #ifdef CONFIG_WPS 470 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 471 return 1; 472 #endif /* CONFIG_WPS */ 473 474 if (has_wep_key(ssid)) 475 privacy = 1; 476 477 #ifdef IEEE8021X_EAPOL 478 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 479 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 480 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) 481 privacy = 1; 482 #endif /* IEEE8021X_EAPOL */ 483 484 if (wpa_key_mgmt_wpa(ssid->key_mgmt)) 485 privacy = 1; 486 487 if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN) 488 privacy = 1; 489 490 if (bss->caps & IEEE80211_CAP_PRIVACY) 491 return privacy; 492 return !privacy; 493 } 494 495 496 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s, 497 struct wpa_ssid *ssid, 498 struct wpa_bss *bss) 499 { 500 struct wpa_ie_data ie; 501 int proto_match = 0; 502 const u8 *rsn_ie, *wpa_ie; 503 int ret; 504 int wep_ok; 505 506 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss); 507 if (ret >= 0) 508 return ret; 509 510 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */ 511 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) && 512 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) && 513 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) || 514 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)); 515 516 rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 517 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) { 518 proto_match++; 519 520 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) { 521 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse " 522 "failed"); 523 break; 524 } 525 526 if (wep_ok && 527 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104))) 528 { 529 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN " 530 "in RSN IE"); 531 return 1; 532 } 533 534 if (!(ie.proto & ssid->proto)) { 535 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto " 536 "mismatch"); 537 break; 538 } 539 540 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) { 541 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK " 542 "cipher mismatch"); 543 break; 544 } 545 546 if (!(ie.group_cipher & ssid->group_cipher)) { 547 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK " 548 "cipher mismatch"); 549 break; 550 } 551 552 if (!(ie.key_mgmt & ssid->key_mgmt)) { 553 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt " 554 "mismatch"); 555 break; 556 } 557 558 #ifdef CONFIG_IEEE80211W 559 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) && 560 wpas_get_ssid_pmf(wpa_s, ssid) == 561 MGMT_FRAME_PROTECTION_REQUIRED) { 562 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt " 563 "frame protection"); 564 break; 565 } 566 #endif /* CONFIG_IEEE80211W */ 567 568 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE"); 569 return 1; 570 } 571 572 wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 573 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) { 574 proto_match++; 575 576 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) { 577 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse " 578 "failed"); 579 break; 580 } 581 582 if (wep_ok && 583 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104))) 584 { 585 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN " 586 "in WPA IE"); 587 return 1; 588 } 589 590 if (!(ie.proto & ssid->proto)) { 591 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto " 592 "mismatch"); 593 break; 594 } 595 596 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) { 597 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK " 598 "cipher mismatch"); 599 break; 600 } 601 602 if (!(ie.group_cipher & ssid->group_cipher)) { 603 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK " 604 "cipher mismatch"); 605 break; 606 } 607 608 if (!(ie.key_mgmt & ssid->key_mgmt)) { 609 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt " 610 "mismatch"); 611 break; 612 } 613 614 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE"); 615 return 1; 616 } 617 618 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie && 619 !rsn_ie) { 620 wpa_dbg(wpa_s, MSG_DEBUG, " allow for non-WPA IEEE 802.1X"); 621 return 1; 622 } 623 624 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) && 625 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) { 626 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match"); 627 return 0; 628 } 629 630 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && 631 wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) { 632 wpa_dbg(wpa_s, MSG_DEBUG, " allow in OSEN"); 633 return 1; 634 } 635 636 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) { 637 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2"); 638 return 1; 639 } 640 641 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with " 642 "WPA/WPA2"); 643 644 return 0; 645 } 646 647 648 static int freq_allowed(int *freqs, int freq) 649 { 650 int i; 651 652 if (freqs == NULL) 653 return 1; 654 655 for (i = 0; freqs[i]; i++) 656 if (freqs[i] == freq) 657 return 1; 658 return 0; 659 } 660 661 662 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) 663 { 664 const struct hostapd_hw_modes *mode = NULL, *modes; 665 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES }; 666 const u8 *rate_ie; 667 int i, j, k; 668 669 if (bss->freq == 0) 670 return 1; /* Cannot do matching without knowing band */ 671 672 modes = wpa_s->hw.modes; 673 if (modes == NULL) { 674 /* 675 * The driver does not provide any additional information 676 * about the utilized hardware, so allow the connection attempt 677 * to continue. 678 */ 679 return 1; 680 } 681 682 for (i = 0; i < wpa_s->hw.num_modes; i++) { 683 for (j = 0; j < modes[i].num_channels; j++) { 684 int freq = modes[i].channels[j].freq; 685 if (freq == bss->freq) { 686 if (mode && 687 mode->mode == HOSTAPD_MODE_IEEE80211G) 688 break; /* do not allow 802.11b replace 689 * 802.11g */ 690 mode = &modes[i]; 691 break; 692 } 693 } 694 } 695 696 if (mode == NULL) 697 return 0; 698 699 for (i = 0; i < (int) sizeof(scan_ie); i++) { 700 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]); 701 if (rate_ie == NULL) 702 continue; 703 704 for (j = 2; j < rate_ie[1] + 2; j++) { 705 int flagged = !!(rate_ie[j] & 0x80); 706 int r = (rate_ie[j] & 0x7f) * 5; 707 708 /* 709 * IEEE Std 802.11n-2009 7.3.2.2: 710 * The new BSS Membership selector value is encoded 711 * like a legacy basic rate, but it is not a rate and 712 * only indicates if the BSS members are required to 713 * support the mandatory features of Clause 20 [HT PHY] 714 * in order to join the BSS. 715 */ 716 if (flagged && ((rate_ie[j] & 0x7f) == 717 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) { 718 if (!ht_supported(mode)) { 719 wpa_dbg(wpa_s, MSG_DEBUG, 720 " hardware does not support " 721 "HT PHY"); 722 return 0; 723 } 724 continue; 725 } 726 727 /* There's also a VHT selector for 802.11ac */ 728 if (flagged && ((rate_ie[j] & 0x7f) == 729 BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) { 730 if (!vht_supported(mode)) { 731 wpa_dbg(wpa_s, MSG_DEBUG, 732 " hardware does not support " 733 "VHT PHY"); 734 return 0; 735 } 736 continue; 737 } 738 739 if (!flagged) 740 continue; 741 742 /* check for legacy basic rates */ 743 for (k = 0; k < mode->num_rates; k++) { 744 if (mode->rates[k] == r) 745 break; 746 } 747 if (k == mode->num_rates) { 748 /* 749 * IEEE Std 802.11-2007 7.3.2.2 demands that in 750 * order to join a BSS all required rates 751 * have to be supported by the hardware. 752 */ 753 wpa_dbg(wpa_s, MSG_DEBUG, 754 " hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)", 755 r / 10, r % 10, 756 bss->freq, mode->mode, mode->num_rates); 757 return 0; 758 } 759 } 760 } 761 762 return 1; 763 } 764 765 766 /* 767 * Test whether BSS is in an ESS. 768 * This is done differently in DMG (60 GHz) and non-DMG bands 769 */ 770 static int bss_is_ess(struct wpa_bss *bss) 771 { 772 if (bss_is_dmg(bss)) { 773 return (bss->caps & IEEE80211_CAP_DMG_MASK) == 774 IEEE80211_CAP_DMG_AP; 775 } 776 777 return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) == 778 IEEE80211_CAP_ESS); 779 } 780 781 782 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask) 783 { 784 size_t i; 785 786 for (i = 0; i < ETH_ALEN; i++) { 787 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i])) 788 return 0; 789 } 790 return 1; 791 } 792 793 794 static int addr_in_list(const u8 *addr, const u8 *list, size_t num) 795 { 796 size_t i; 797 798 for (i = 0; i < num; i++) { 799 const u8 *a = list + i * ETH_ALEN * 2; 800 const u8 *m = a + ETH_ALEN; 801 802 if (match_mac_mask(a, addr, m)) 803 return 1; 804 } 805 return 0; 806 } 807 808 809 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s, 810 int i, struct wpa_bss *bss, 811 struct wpa_ssid *group, 812 int only_first_ssid) 813 { 814 u8 wpa_ie_len, rsn_ie_len; 815 int wpa; 816 struct wpa_blacklist *e; 817 const u8 *ie; 818 struct wpa_ssid *ssid; 819 int osen; 820 821 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 822 wpa_ie_len = ie ? ie[1] : 0; 823 824 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 825 rsn_ie_len = ie ? ie[1] : 0; 826 827 ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE); 828 osen = ie != NULL; 829 830 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' " 831 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d freq=%d %s%s%s", 832 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len), 833 wpa_ie_len, rsn_ie_len, bss->caps, bss->level, bss->freq, 834 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "", 835 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) || 836 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ? 837 " p2p" : "", 838 osen ? " osen=1" : ""); 839 840 e = wpa_blacklist_get(wpa_s, bss->bssid); 841 if (e) { 842 int limit = 1; 843 if (wpa_supplicant_enabled_networks(wpa_s) == 1) { 844 /* 845 * When only a single network is enabled, we can 846 * trigger blacklisting on the first failure. This 847 * should not be done with multiple enabled networks to 848 * avoid getting forced to move into a worse ESS on 849 * single error if there are no other BSSes of the 850 * current ESS. 851 */ 852 limit = 0; 853 } 854 if (e->count > limit) { 855 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted " 856 "(count=%d limit=%d)", e->count, limit); 857 return NULL; 858 } 859 } 860 861 if (bss->ssid_len == 0) { 862 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known"); 863 return NULL; 864 } 865 866 if (disallowed_bssid(wpa_s, bss->bssid)) { 867 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed"); 868 return NULL; 869 } 870 871 if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) { 872 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed"); 873 return NULL; 874 } 875 876 wpa = wpa_ie_len > 0 || rsn_ie_len > 0; 877 878 for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) { 879 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0); 880 int res; 881 882 if (wpas_network_disabled(wpa_s, ssid)) { 883 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled"); 884 continue; 885 } 886 887 res = wpas_temp_disabled(wpa_s, ssid); 888 if (res > 0) { 889 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled " 890 "temporarily for %d second(s)", res); 891 continue; 892 } 893 894 #ifdef CONFIG_WPS 895 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) { 896 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted " 897 "(WPS)"); 898 continue; 899 } 900 901 if (wpa && ssid->ssid_len == 0 && 902 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss)) 903 check_ssid = 0; 904 905 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 906 /* Only allow wildcard SSID match if an AP 907 * advertises active WPS operation that matches 908 * with our mode. */ 909 check_ssid = 1; 910 if (ssid->ssid_len == 0 && 911 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss)) 912 check_ssid = 0; 913 } 914 #endif /* CONFIG_WPS */ 915 916 if (ssid->bssid_set && ssid->ssid_len == 0 && 917 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0) 918 check_ssid = 0; 919 920 if (check_ssid && 921 (bss->ssid_len != ssid->ssid_len || 922 os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) { 923 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch"); 924 continue; 925 } 926 927 if (ssid->bssid_set && 928 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) { 929 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch"); 930 continue; 931 } 932 933 /* check blacklist */ 934 if (ssid->num_bssid_blacklist && 935 addr_in_list(bss->bssid, ssid->bssid_blacklist, 936 ssid->num_bssid_blacklist)) { 937 wpa_dbg(wpa_s, MSG_DEBUG, 938 " skip - BSSID blacklisted"); 939 continue; 940 } 941 942 /* if there is a whitelist, only accept those APs */ 943 if (ssid->num_bssid_whitelist && 944 !addr_in_list(bss->bssid, ssid->bssid_whitelist, 945 ssid->num_bssid_whitelist)) { 946 wpa_dbg(wpa_s, MSG_DEBUG, 947 " skip - BSSID not in whitelist"); 948 continue; 949 } 950 951 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss)) 952 continue; 953 954 if (!osen && !wpa && 955 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) && 956 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) && 957 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) { 958 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network " 959 "not allowed"); 960 continue; 961 } 962 963 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) && 964 has_wep_key(ssid)) { 965 wpa_dbg(wpa_s, MSG_DEBUG, " skip - ignore WPA/WPA2 AP for WEP network block"); 966 continue; 967 } 968 969 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) { 970 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-OSEN network " 971 "not allowed"); 972 continue; 973 } 974 975 if (!wpa_supplicant_match_privacy(bss, ssid)) { 976 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy " 977 "mismatch"); 978 continue; 979 } 980 981 if (!bss_is_ess(bss)) { 982 wpa_dbg(wpa_s, MSG_DEBUG, " skip - not ESS network"); 983 continue; 984 } 985 986 if (!freq_allowed(ssid->freq_list, bss->freq)) { 987 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not " 988 "allowed"); 989 continue; 990 } 991 992 if (!rate_match(wpa_s, bss)) { 993 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do " 994 "not match"); 995 continue; 996 } 997 998 #ifdef CONFIG_P2P 999 if (ssid->p2p_group && 1000 !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) && 1001 !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) { 1002 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P IE seen"); 1003 continue; 1004 } 1005 1006 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) { 1007 struct wpabuf *p2p_ie; 1008 u8 dev_addr[ETH_ALEN]; 1009 1010 ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE); 1011 if (ie == NULL) { 1012 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P element"); 1013 continue; 1014 } 1015 p2p_ie = wpa_bss_get_vendor_ie_multi( 1016 bss, P2P_IE_VENDOR_TYPE); 1017 if (p2p_ie == NULL) { 1018 wpa_dbg(wpa_s, MSG_DEBUG, " skip - could not fetch P2P element"); 1019 continue; 1020 } 1021 1022 if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0 1023 || os_memcmp(dev_addr, ssid->go_p2p_dev_addr, 1024 ETH_ALEN) != 0) { 1025 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no matching GO P2P Device Address in P2P element"); 1026 wpabuf_free(p2p_ie); 1027 continue; 1028 } 1029 wpabuf_free(p2p_ie); 1030 } 1031 1032 /* 1033 * TODO: skip the AP if its P2P IE has Group Formation 1034 * bit set in the P2P Group Capability Bitmap and we 1035 * are not in Group Formation with that device. 1036 */ 1037 #endif /* CONFIG_P2P */ 1038 1039 if (os_reltime_before(&bss->last_update, &wpa_s->scan_min_time)) 1040 { 1041 struct os_reltime diff; 1042 1043 os_reltime_sub(&wpa_s->scan_min_time, 1044 &bss->last_update, &diff); 1045 wpa_dbg(wpa_s, MSG_DEBUG, 1046 " skip - scan result not recent enough (%u.%06u seconds too old)", 1047 (unsigned int) diff.sec, 1048 (unsigned int) diff.usec); 1049 continue; 1050 } 1051 1052 /* Matching configuration found */ 1053 return ssid; 1054 } 1055 1056 /* No matching configuration found */ 1057 return NULL; 1058 } 1059 1060 1061 static struct wpa_bss * 1062 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s, 1063 struct wpa_ssid *group, 1064 struct wpa_ssid **selected_ssid, 1065 int only_first_ssid) 1066 { 1067 unsigned int i; 1068 1069 if (only_first_ssid) 1070 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d", 1071 group->id); 1072 else 1073 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d", 1074 group->priority); 1075 1076 for (i = 0; i < wpa_s->last_scan_res_used; i++) { 1077 struct wpa_bss *bss = wpa_s->last_scan_res[i]; 1078 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group, 1079 only_first_ssid); 1080 if (!*selected_ssid) 1081 continue; 1082 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR 1083 " ssid='%s'", 1084 MAC2STR(bss->bssid), 1085 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 1086 return bss; 1087 } 1088 1089 return NULL; 1090 } 1091 1092 1093 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s, 1094 struct wpa_ssid **selected_ssid) 1095 { 1096 struct wpa_bss *selected = NULL; 1097 int prio; 1098 struct wpa_ssid *next_ssid = NULL; 1099 struct wpa_ssid *ssid; 1100 1101 if (wpa_s->last_scan_res == NULL || 1102 wpa_s->last_scan_res_used == 0) 1103 return NULL; /* no scan results from last update */ 1104 1105 if (wpa_s->next_ssid) { 1106 /* check that next_ssid is still valid */ 1107 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1108 if (ssid == wpa_s->next_ssid) 1109 break; 1110 } 1111 next_ssid = ssid; 1112 wpa_s->next_ssid = NULL; 1113 } 1114 1115 while (selected == NULL) { 1116 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) { 1117 if (next_ssid && next_ssid->priority == 1118 wpa_s->conf->pssid[prio]->priority) { 1119 selected = wpa_supplicant_select_bss( 1120 wpa_s, next_ssid, selected_ssid, 1); 1121 if (selected) 1122 break; 1123 } 1124 selected = wpa_supplicant_select_bss( 1125 wpa_s, wpa_s->conf->pssid[prio], 1126 selected_ssid, 0); 1127 if (selected) 1128 break; 1129 } 1130 1131 if (selected == NULL && wpa_s->blacklist && 1132 !wpa_s->countermeasures) { 1133 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear " 1134 "blacklist and try again"); 1135 wpa_blacklist_clear(wpa_s); 1136 wpa_s->blacklist_cleared++; 1137 } else if (selected == NULL) 1138 break; 1139 } 1140 1141 ssid = *selected_ssid; 1142 if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set && 1143 !ssid->passphrase && !ssid->ext_psk) { 1144 const char *field_name, *txt = NULL; 1145 1146 wpa_dbg(wpa_s, MSG_DEBUG, 1147 "PSK/passphrase not yet available for the selected network"); 1148 1149 wpas_notify_network_request(wpa_s, ssid, 1150 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL); 1151 1152 field_name = wpa_supplicant_ctrl_req_to_string( 1153 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt); 1154 if (field_name == NULL) 1155 return NULL; 1156 1157 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt); 1158 1159 selected = NULL; 1160 } 1161 1162 return selected; 1163 } 1164 1165 1166 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s, 1167 int timeout_sec, int timeout_usec) 1168 { 1169 if (!wpa_supplicant_enabled_networks(wpa_s)) { 1170 /* 1171 * No networks are enabled; short-circuit request so 1172 * we don't wait timeout seconds before transitioning 1173 * to INACTIVE state. 1174 */ 1175 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request " 1176 "since there are no enabled networks"); 1177 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); 1178 return; 1179 } 1180 1181 wpa_s->scan_for_connection = 1; 1182 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec); 1183 } 1184 1185 1186 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s, 1187 struct wpa_bss *selected, 1188 struct wpa_ssid *ssid) 1189 { 1190 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) { 1191 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP 1192 "PBC session overlap"); 1193 wpas_notify_wps_event_pbc_overlap(wpa_s); 1194 #ifdef CONFIG_P2P 1195 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 1196 wpa_s->p2p_in_provisioning) { 1197 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb, 1198 wpa_s, NULL); 1199 return -1; 1200 } 1201 #endif /* CONFIG_P2P */ 1202 1203 #ifdef CONFIG_WPS 1204 wpas_wps_pbc_overlap(wpa_s); 1205 wpas_wps_cancel(wpa_s); 1206 #endif /* CONFIG_WPS */ 1207 return -1; 1208 } 1209 1210 wpa_msg(wpa_s, MSG_DEBUG, 1211 "Considering connect request: reassociate: %d selected: " 1212 MACSTR " bssid: " MACSTR " pending: " MACSTR 1213 " wpa_state: %s ssid=%p current_ssid=%p", 1214 wpa_s->reassociate, MAC2STR(selected->bssid), 1215 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid), 1216 wpa_supplicant_state_txt(wpa_s->wpa_state), 1217 ssid, wpa_s->current_ssid); 1218 1219 /* 1220 * Do not trigger new association unless the BSSID has changed or if 1221 * reassociation is requested. If we are in process of associating with 1222 * the selected BSSID, do not trigger new attempt. 1223 */ 1224 if (wpa_s->reassociate || 1225 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 && 1226 ((wpa_s->wpa_state != WPA_ASSOCIATING && 1227 wpa_s->wpa_state != WPA_AUTHENTICATING) || 1228 (!is_zero_ether_addr(wpa_s->pending_bssid) && 1229 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) != 1230 0) || 1231 (is_zero_ether_addr(wpa_s->pending_bssid) && 1232 ssid != wpa_s->current_ssid)))) { 1233 if (wpa_supplicant_scard_init(wpa_s, ssid)) { 1234 wpa_supplicant_req_new_scan(wpa_s, 10, 0); 1235 return 0; 1236 } 1237 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR, 1238 MAC2STR(selected->bssid)); 1239 wpa_supplicant_associate(wpa_s, selected, ssid); 1240 } else { 1241 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to " 1242 "connect with the selected AP"); 1243 } 1244 1245 return 0; 1246 } 1247 1248 1249 static struct wpa_ssid * 1250 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s) 1251 { 1252 int prio; 1253 struct wpa_ssid *ssid; 1254 1255 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) { 1256 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext) 1257 { 1258 if (wpas_network_disabled(wpa_s, ssid)) 1259 continue; 1260 if (ssid->mode == IEEE80211_MODE_IBSS || 1261 ssid->mode == IEEE80211_MODE_AP || 1262 ssid->mode == IEEE80211_MODE_MESH) 1263 return ssid; 1264 } 1265 } 1266 return NULL; 1267 } 1268 1269 1270 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based 1271 * on BSS added and BSS changed events */ 1272 static void wpa_supplicant_rsn_preauth_scan_results( 1273 struct wpa_supplicant *wpa_s) 1274 { 1275 struct wpa_bss *bss; 1276 1277 if (rsn_preauth_scan_results(wpa_s->wpa) < 0) 1278 return; 1279 1280 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1281 const u8 *ssid, *rsn; 1282 1283 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID); 1284 if (ssid == NULL) 1285 continue; 1286 1287 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 1288 if (rsn == NULL) 1289 continue; 1290 1291 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn); 1292 } 1293 1294 } 1295 1296 1297 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s, 1298 struct wpa_bss *selected, 1299 struct wpa_ssid *ssid) 1300 { 1301 struct wpa_bss *current_bss = NULL; 1302 #ifndef CONFIG_NO_ROAMING 1303 int min_diff; 1304 #endif /* CONFIG_NO_ROAMING */ 1305 1306 if (wpa_s->reassociate) 1307 return 1; /* explicit request to reassociate */ 1308 if (wpa_s->wpa_state < WPA_ASSOCIATED) 1309 return 1; /* we are not associated; continue */ 1310 if (wpa_s->current_ssid == NULL) 1311 return 1; /* unknown current SSID */ 1312 if (wpa_s->current_ssid != ssid) 1313 return 1; /* different network block */ 1314 1315 if (wpas_driver_bss_selection(wpa_s)) 1316 return 0; /* Driver-based roaming */ 1317 1318 if (wpa_s->current_ssid->ssid) 1319 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid, 1320 wpa_s->current_ssid->ssid, 1321 wpa_s->current_ssid->ssid_len); 1322 if (!current_bss) 1323 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid); 1324 1325 if (!current_bss) 1326 return 1; /* current BSS not seen in scan results */ 1327 1328 if (current_bss == selected) 1329 return 0; 1330 1331 if (selected->last_update_idx > current_bss->last_update_idx) 1332 return 1; /* current BSS not seen in the last scan */ 1333 1334 #ifndef CONFIG_NO_ROAMING 1335 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation"); 1336 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR 1337 " level=%d snr=%d est_throughput=%u", 1338 MAC2STR(current_bss->bssid), current_bss->level, 1339 current_bss->snr, current_bss->est_throughput); 1340 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR 1341 " level=%d snr=%d est_throughput=%u", 1342 MAC2STR(selected->bssid), selected->level, 1343 selected->snr, selected->est_throughput); 1344 1345 if (wpa_s->current_ssid->bssid_set && 1346 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) == 1347 0) { 1348 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS " 1349 "has preferred BSSID"); 1350 return 1; 1351 } 1352 1353 if (selected->est_throughput > current_bss->est_throughput + 5000) { 1354 wpa_dbg(wpa_s, MSG_DEBUG, 1355 "Allow reassociation - selected BSS has better estimated throughput"); 1356 return 1; 1357 } 1358 1359 if (current_bss->level < 0 && current_bss->level > selected->level) { 1360 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better " 1361 "signal level"); 1362 return 0; 1363 } 1364 1365 min_diff = 2; 1366 if (current_bss->level < 0) { 1367 if (current_bss->level < -85) 1368 min_diff = 1; 1369 else if (current_bss->level < -80) 1370 min_diff = 2; 1371 else if (current_bss->level < -75) 1372 min_diff = 3; 1373 else if (current_bss->level < -70) 1374 min_diff = 4; 1375 else 1376 min_diff = 5; 1377 } 1378 if (abs(current_bss->level - selected->level) < min_diff) { 1379 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference " 1380 "in signal level"); 1381 return 0; 1382 } 1383 1384 return 1; 1385 #else /* CONFIG_NO_ROAMING */ 1386 return 0; 1387 #endif /* CONFIG_NO_ROAMING */ 1388 } 1389 1390 1391 /* Return != 0 if no scan results could be fetched or if scan results should not 1392 * be shared with other virtual interfaces. */ 1393 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s, 1394 union wpa_event_data *data, 1395 int own_request) 1396 { 1397 struct wpa_scan_results *scan_res = NULL; 1398 int ret = 0; 1399 int ap = 0; 1400 #ifndef CONFIG_NO_RANDOM_POOL 1401 size_t i, num; 1402 #endif /* CONFIG_NO_RANDOM_POOL */ 1403 1404 #ifdef CONFIG_AP 1405 if (wpa_s->ap_iface) 1406 ap = 1; 1407 #endif /* CONFIG_AP */ 1408 1409 wpa_supplicant_notify_scanning(wpa_s, 0); 1410 1411 scan_res = wpa_supplicant_get_scan_results(wpa_s, 1412 data ? &data->scan_info : 1413 NULL, 1); 1414 if (scan_res == NULL) { 1415 if (wpa_s->conf->ap_scan == 2 || ap || 1416 wpa_s->scan_res_handler == scan_only_handler) 1417 return -1; 1418 if (!own_request) 1419 return -1; 1420 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try " 1421 "scanning again"); 1422 wpa_supplicant_req_new_scan(wpa_s, 1, 0); 1423 ret = -1; 1424 goto scan_work_done; 1425 } 1426 1427 #ifndef CONFIG_NO_RANDOM_POOL 1428 num = scan_res->num; 1429 if (num > 10) 1430 num = 10; 1431 for (i = 0; i < num; i++) { 1432 u8 buf[5]; 1433 struct wpa_scan_res *res = scan_res->res[i]; 1434 buf[0] = res->bssid[5]; 1435 buf[1] = res->qual & 0xff; 1436 buf[2] = res->noise & 0xff; 1437 buf[3] = res->level & 0xff; 1438 buf[4] = res->tsf & 0xff; 1439 random_add_randomness(buf, sizeof(buf)); 1440 } 1441 #endif /* CONFIG_NO_RANDOM_POOL */ 1442 1443 if (own_request && wpa_s->scan_res_handler && 1444 (wpa_s->own_scan_running || !wpa_s->radio->external_scan_running)) { 1445 void (*scan_res_handler)(struct wpa_supplicant *wpa_s, 1446 struct wpa_scan_results *scan_res); 1447 1448 scan_res_handler = wpa_s->scan_res_handler; 1449 wpa_s->scan_res_handler = NULL; 1450 scan_res_handler(wpa_s, scan_res); 1451 ret = -2; 1452 goto scan_work_done; 1453 } 1454 1455 if (ap) { 1456 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode"); 1457 #ifdef CONFIG_AP 1458 if (wpa_s->ap_iface->scan_cb) 1459 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface); 1460 #endif /* CONFIG_AP */ 1461 goto scan_work_done; 1462 } 1463 1464 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)", 1465 wpa_s->own_scan_running, wpa_s->radio->external_scan_running); 1466 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && 1467 wpa_s->manual_scan_use_id && wpa_s->own_scan_running) { 1468 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u", 1469 wpa_s->manual_scan_id); 1470 wpa_s->manual_scan_use_id = 0; 1471 } else { 1472 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS); 1473 } 1474 wpas_notify_scan_results(wpa_s); 1475 1476 wpas_notify_scan_done(wpa_s, 1); 1477 1478 if (!wpa_s->own_scan_running && wpa_s->radio->external_scan_running) { 1479 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection"); 1480 wpa_scan_results_free(scan_res); 1481 return 0; 1482 } 1483 1484 if (wnm_scan_process(wpa_s, 1) > 0) 1485 goto scan_work_done; 1486 1487 if (sme_proc_obss_scan(wpa_s) > 0) 1488 goto scan_work_done; 1489 1490 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) 1491 goto scan_work_done; 1492 1493 if (autoscan_notify_scan(wpa_s, scan_res)) 1494 goto scan_work_done; 1495 1496 if (wpa_s->disconnected) { 1497 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1498 goto scan_work_done; 1499 } 1500 1501 if (!wpas_driver_bss_selection(wpa_s) && 1502 bgscan_notify_scan(wpa_s, scan_res) == 1) 1503 goto scan_work_done; 1504 1505 wpas_wps_update_ap_info(wpa_s, scan_res); 1506 1507 wpa_scan_results_free(scan_res); 1508 1509 if (wpa_s->scan_work) { 1510 struct wpa_radio_work *work = wpa_s->scan_work; 1511 wpa_s->scan_work = NULL; 1512 radio_work_done(work); 1513 } 1514 1515 return wpas_select_network_from_last_scan(wpa_s, 1, own_request); 1516 1517 scan_work_done: 1518 wpa_scan_results_free(scan_res); 1519 if (wpa_s->scan_work) { 1520 struct wpa_radio_work *work = wpa_s->scan_work; 1521 wpa_s->scan_work = NULL; 1522 radio_work_done(work); 1523 } 1524 return ret; 1525 } 1526 1527 1528 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s, 1529 int new_scan, int own_request) 1530 { 1531 struct wpa_bss *selected; 1532 struct wpa_ssid *ssid = NULL; 1533 int time_to_reenable = wpas_reenabled_network_time(wpa_s); 1534 1535 if (time_to_reenable > 0) { 1536 wpa_dbg(wpa_s, MSG_DEBUG, 1537 "Postpone network selection by %d seconds since all networks are disabled", 1538 time_to_reenable); 1539 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL); 1540 eloop_register_timeout(time_to_reenable, 0, 1541 wpas_network_reenabled, wpa_s, NULL); 1542 return 0; 1543 } 1544 1545 if (wpa_s->p2p_mgmt) 1546 return 0; /* no normal connection on p2p_mgmt interface */ 1547 1548 selected = wpa_supplicant_pick_network(wpa_s, &ssid); 1549 1550 if (selected) { 1551 int skip; 1552 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid); 1553 if (skip) { 1554 if (new_scan) 1555 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 1556 return 0; 1557 } 1558 1559 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) { 1560 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed"); 1561 return -1; 1562 } 1563 if (new_scan) 1564 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 1565 /* 1566 * Do not notify other virtual radios of scan results since we do not 1567 * want them to start other associations at the same time. 1568 */ 1569 return 1; 1570 } else { 1571 #ifdef CONFIG_MESH 1572 if (wpa_s->ifmsh) { 1573 wpa_msg(wpa_s, MSG_INFO, 1574 "Avoiding join because we already joined a mesh group"); 1575 return 0; 1576 } 1577 #endif /* CONFIG_MESH */ 1578 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found"); 1579 ssid = wpa_supplicant_pick_new_network(wpa_s); 1580 if (ssid) { 1581 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network"); 1582 wpa_supplicant_associate(wpa_s, NULL, ssid); 1583 if (new_scan) 1584 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 1585 } else if (own_request) { 1586 /* 1587 * No SSID found. If SCAN results are as a result of 1588 * own scan request and not due to a scan request on 1589 * another shared interface, try another scan. 1590 */ 1591 int timeout_sec = wpa_s->scan_interval; 1592 int timeout_usec = 0; 1593 #ifdef CONFIG_P2P 1594 int res; 1595 1596 res = wpas_p2p_scan_no_go_seen(wpa_s); 1597 if (res == 2) 1598 return 2; 1599 if (res == 1) 1600 return 0; 1601 1602 if (wpa_s->p2p_in_provisioning || 1603 wpa_s->show_group_started || 1604 wpa_s->p2p_in_invitation) { 1605 /* 1606 * Use shorter wait during P2P Provisioning 1607 * state and during P2P join-a-group operation 1608 * to speed up group formation. 1609 */ 1610 timeout_sec = 0; 1611 timeout_usec = 250000; 1612 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1613 timeout_usec); 1614 return 0; 1615 } 1616 #endif /* CONFIG_P2P */ 1617 #ifdef CONFIG_INTERWORKING 1618 if (wpa_s->conf->auto_interworking && 1619 wpa_s->conf->interworking && 1620 wpa_s->conf->cred) { 1621 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: " 1622 "start ANQP fetch since no matching " 1623 "networks found"); 1624 wpa_s->network_select = 1; 1625 wpa_s->auto_network_select = 1; 1626 interworking_start_fetch_anqp(wpa_s); 1627 return 1; 1628 } 1629 #endif /* CONFIG_INTERWORKING */ 1630 #ifdef CONFIG_WPS 1631 if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) { 1632 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing"); 1633 timeout_sec = 0; 1634 timeout_usec = 500000; 1635 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1636 timeout_usec); 1637 return 0; 1638 } 1639 #endif /* CONFIG_WPS */ 1640 if (wpa_supplicant_req_sched_scan(wpa_s)) 1641 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1642 timeout_usec); 1643 1644 wpa_msg_ctrl(wpa_s, MSG_INFO, 1645 WPA_EVENT_NETWORK_NOT_FOUND); 1646 } 1647 } 1648 return 0; 1649 } 1650 1651 1652 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s, 1653 union wpa_event_data *data) 1654 { 1655 struct wpa_supplicant *ifs; 1656 int res; 1657 1658 res = _wpa_supplicant_event_scan_results(wpa_s, data, 1); 1659 if (res == 2) { 1660 /* 1661 * Interface may have been removed, so must not dereference 1662 * wpa_s after this. 1663 */ 1664 return 1; 1665 } 1666 if (res != 0) { 1667 /* 1668 * If no scan results could be fetched, then no need to 1669 * notify those interfaces that did not actually request 1670 * this scan. Similarly, if scan results started a new operation on this 1671 * interface, do not notify other interfaces to avoid concurrent 1672 * operations during a connection attempt. 1673 */ 1674 return 0; 1675 } 1676 1677 /* 1678 * Check other interfaces to see if they share the same radio. If 1679 * so, they get updated with this same scan info. 1680 */ 1681 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 1682 radio_list) { 1683 if (ifs != wpa_s) { 1684 wpa_printf(MSG_DEBUG, "%s: Updating scan results from " 1685 "sibling", ifs->ifname); 1686 _wpa_supplicant_event_scan_results(ifs, data, 0); 1687 } 1688 } 1689 1690 return 0; 1691 } 1692 1693 #endif /* CONFIG_NO_SCAN_PROCESSING */ 1694 1695 1696 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s) 1697 { 1698 #ifdef CONFIG_NO_SCAN_PROCESSING 1699 return -1; 1700 #else /* CONFIG_NO_SCAN_PROCESSING */ 1701 struct os_reltime now; 1702 1703 if (wpa_s->last_scan_res_used == 0) 1704 return -1; 1705 1706 os_get_reltime(&now); 1707 if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) { 1708 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results"); 1709 return -1; 1710 } 1711 1712 return wpas_select_network_from_last_scan(wpa_s, 0, 1); 1713 #endif /* CONFIG_NO_SCAN_PROCESSING */ 1714 } 1715 1716 #ifdef CONFIG_WNM 1717 1718 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx) 1719 { 1720 struct wpa_supplicant *wpa_s = eloop_ctx; 1721 1722 if (wpa_s->wpa_state < WPA_ASSOCIATED) 1723 return; 1724 1725 if (!wpa_s->no_keep_alive) { 1726 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR, 1727 MAC2STR(wpa_s->bssid)); 1728 /* TODO: could skip this if normal data traffic has been sent */ 1729 /* TODO: Consider using some more appropriate data frame for 1730 * this */ 1731 if (wpa_s->l2) 1732 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800, 1733 (u8 *) "", 0); 1734 } 1735 1736 #ifdef CONFIG_SME 1737 if (wpa_s->sme.bss_max_idle_period) { 1738 unsigned int msec; 1739 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */ 1740 if (msec > 100) 1741 msec -= 100; 1742 eloop_register_timeout(msec / 1000, msec % 1000 * 1000, 1743 wnm_bss_keep_alive, wpa_s, NULL); 1744 } 1745 #endif /* CONFIG_SME */ 1746 } 1747 1748 1749 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s, 1750 const u8 *ies, size_t ies_len) 1751 { 1752 struct ieee802_11_elems elems; 1753 1754 if (ies == NULL) 1755 return; 1756 1757 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) 1758 return; 1759 1760 #ifdef CONFIG_SME 1761 if (elems.bss_max_idle_period) { 1762 unsigned int msec; 1763 wpa_s->sme.bss_max_idle_period = 1764 WPA_GET_LE16(elems.bss_max_idle_period); 1765 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 " 1766 "TU)%s", wpa_s->sme.bss_max_idle_period, 1767 (elems.bss_max_idle_period[2] & 0x01) ? 1768 " (protected keep-live required)" : ""); 1769 if (wpa_s->sme.bss_max_idle_period == 0) 1770 wpa_s->sme.bss_max_idle_period = 1; 1771 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) { 1772 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL); 1773 /* msec times 1000 */ 1774 msec = wpa_s->sme.bss_max_idle_period * 1024; 1775 if (msec > 100) 1776 msec -= 100; 1777 eloop_register_timeout(msec / 1000, msec % 1000 * 1000, 1778 wnm_bss_keep_alive, wpa_s, 1779 NULL); 1780 } 1781 } 1782 #endif /* CONFIG_SME */ 1783 } 1784 1785 #endif /* CONFIG_WNM */ 1786 1787 1788 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s) 1789 { 1790 #ifdef CONFIG_WNM 1791 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL); 1792 #endif /* CONFIG_WNM */ 1793 } 1794 1795 1796 #ifdef CONFIG_INTERWORKING 1797 1798 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map, 1799 size_t len) 1800 { 1801 int res; 1802 1803 wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len); 1804 res = wpa_drv_set_qos_map(wpa_s, qos_map, len); 1805 if (res) { 1806 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver"); 1807 } 1808 1809 return res; 1810 } 1811 1812 1813 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s, 1814 const u8 *ies, size_t ies_len) 1815 { 1816 struct ieee802_11_elems elems; 1817 1818 if (ies == NULL) 1819 return; 1820 1821 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) 1822 return; 1823 1824 if (elems.qos_map_set) { 1825 wpas_qos_map_set(wpa_s, elems.qos_map_set, 1826 elems.qos_map_set_len); 1827 } 1828 } 1829 1830 #endif /* CONFIG_INTERWORKING */ 1831 1832 1833 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s, 1834 union wpa_event_data *data) 1835 { 1836 int l, len, found = 0, wpa_found, rsn_found; 1837 const u8 *p; 1838 #ifdef CONFIG_IEEE80211R 1839 u8 bssid[ETH_ALEN]; 1840 #endif /* CONFIG_IEEE80211R */ 1841 1842 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event"); 1843 if (data->assoc_info.req_ies) 1844 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies, 1845 data->assoc_info.req_ies_len); 1846 if (data->assoc_info.resp_ies) { 1847 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies, 1848 data->assoc_info.resp_ies_len); 1849 #ifdef CONFIG_TDLS 1850 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies, 1851 data->assoc_info.resp_ies_len); 1852 #endif /* CONFIG_TDLS */ 1853 #ifdef CONFIG_WNM 1854 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies, 1855 data->assoc_info.resp_ies_len); 1856 #endif /* CONFIG_WNM */ 1857 #ifdef CONFIG_INTERWORKING 1858 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies, 1859 data->assoc_info.resp_ies_len); 1860 #endif /* CONFIG_INTERWORKING */ 1861 } 1862 if (data->assoc_info.beacon_ies) 1863 wpa_hexdump(MSG_DEBUG, "beacon_ies", 1864 data->assoc_info.beacon_ies, 1865 data->assoc_info.beacon_ies_len); 1866 if (data->assoc_info.freq) 1867 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz", 1868 data->assoc_info.freq); 1869 1870 p = data->assoc_info.req_ies; 1871 l = data->assoc_info.req_ies_len; 1872 1873 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */ 1874 while (p && l >= 2) { 1875 len = p[1] + 2; 1876 if (len > l) { 1877 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info", 1878 p, l); 1879 break; 1880 } 1881 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 && 1882 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) || 1883 (p[0] == WLAN_EID_RSN && p[1] >= 2)) { 1884 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len)) 1885 break; 1886 found = 1; 1887 wpa_find_assoc_pmkid(wpa_s); 1888 break; 1889 } 1890 l -= len; 1891 p += len; 1892 } 1893 if (!found && data->assoc_info.req_ies) 1894 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 1895 1896 #ifdef CONFIG_IEEE80211R 1897 #ifdef CONFIG_SME 1898 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) { 1899 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 || 1900 wpa_ft_validate_reassoc_resp(wpa_s->wpa, 1901 data->assoc_info.resp_ies, 1902 data->assoc_info.resp_ies_len, 1903 bssid) < 0) { 1904 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of " 1905 "Reassociation Response failed"); 1906 wpa_supplicant_deauthenticate( 1907 wpa_s, WLAN_REASON_INVALID_IE); 1908 return -1; 1909 } 1910 } 1911 1912 p = data->assoc_info.resp_ies; 1913 l = data->assoc_info.resp_ies_len; 1914 1915 #ifdef CONFIG_WPS_STRICT 1916 if (p && wpa_s->current_ssid && 1917 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) { 1918 struct wpabuf *wps; 1919 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE); 1920 if (wps == NULL) { 1921 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not " 1922 "include WPS IE in (Re)Association Response"); 1923 return -1; 1924 } 1925 1926 if (wps_validate_assoc_resp(wps) < 0) { 1927 wpabuf_free(wps); 1928 wpa_supplicant_deauthenticate( 1929 wpa_s, WLAN_REASON_INVALID_IE); 1930 return -1; 1931 } 1932 wpabuf_free(wps); 1933 } 1934 #endif /* CONFIG_WPS_STRICT */ 1935 1936 /* Go through the IEs and make a copy of the MDIE, if present. */ 1937 while (p && l >= 2) { 1938 len = p[1] + 2; 1939 if (len > l) { 1940 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info", 1941 p, l); 1942 break; 1943 } 1944 if (p[0] == WLAN_EID_MOBILITY_DOMAIN && 1945 p[1] >= MOBILITY_DOMAIN_ID_LEN) { 1946 wpa_s->sme.ft_used = 1; 1947 os_memcpy(wpa_s->sme.mobility_domain, p + 2, 1948 MOBILITY_DOMAIN_ID_LEN); 1949 break; 1950 } 1951 l -= len; 1952 p += len; 1953 } 1954 #endif /* CONFIG_SME */ 1955 1956 /* Process FT when SME is in the driver */ 1957 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) && 1958 wpa_ft_is_completed(wpa_s->wpa)) { 1959 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 || 1960 wpa_ft_validate_reassoc_resp(wpa_s->wpa, 1961 data->assoc_info.resp_ies, 1962 data->assoc_info.resp_ies_len, 1963 bssid) < 0) { 1964 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of " 1965 "Reassociation Response failed"); 1966 wpa_supplicant_deauthenticate( 1967 wpa_s, WLAN_REASON_INVALID_IE); 1968 return -1; 1969 } 1970 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done"); 1971 } 1972 1973 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies, 1974 data->assoc_info.resp_ies_len); 1975 #endif /* CONFIG_IEEE80211R */ 1976 1977 /* WPA/RSN IE from Beacon/ProbeResp */ 1978 p = data->assoc_info.beacon_ies; 1979 l = data->assoc_info.beacon_ies_len; 1980 1981 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present. 1982 */ 1983 wpa_found = rsn_found = 0; 1984 while (p && l >= 2) { 1985 len = p[1] + 2; 1986 if (len > l) { 1987 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies", 1988 p, l); 1989 break; 1990 } 1991 if (!wpa_found && 1992 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 && 1993 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) { 1994 wpa_found = 1; 1995 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len); 1996 } 1997 1998 if (!rsn_found && 1999 p[0] == WLAN_EID_RSN && p[1] >= 2) { 2000 rsn_found = 1; 2001 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len); 2002 } 2003 2004 l -= len; 2005 p += len; 2006 } 2007 2008 if (!wpa_found && data->assoc_info.beacon_ies) 2009 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0); 2010 if (!rsn_found && data->assoc_info.beacon_ies) 2011 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0); 2012 if (wpa_found || rsn_found) 2013 wpa_s->ap_ies_from_associnfo = 1; 2014 2015 #ifdef CONFIG_FST 2016 wpabuf_free(wpa_s->received_mb_ies); 2017 wpa_s->received_mb_ies = NULL; 2018 if (wpa_s->fst) { 2019 struct mb_ies_info mb_ies; 2020 2021 wpa_printf(MSG_DEBUG, "Looking for MB IE"); 2022 if (!mb_ies_info_by_ies(&mb_ies, data->assoc_info.resp_ies, 2023 data->assoc_info.resp_ies_len)) 2024 wpa_s->received_mb_ies = mb_ies_by_info(&mb_ies); 2025 } 2026 #endif /* CONFIG_FST */ 2027 2028 if (wpa_s->assoc_freq && data->assoc_info.freq && 2029 wpa_s->assoc_freq != data->assoc_info.freq) { 2030 wpa_printf(MSG_DEBUG, "Operating frequency changed from " 2031 "%u to %u MHz", 2032 wpa_s->assoc_freq, data->assoc_info.freq); 2033 wpa_supplicant_update_scan_results(wpa_s); 2034 } 2035 2036 wpa_s->assoc_freq = data->assoc_info.freq; 2037 2038 return 0; 2039 } 2040 2041 2042 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s) 2043 { 2044 const u8 *bss_wpa = NULL, *bss_rsn = NULL; 2045 2046 if (!wpa_s->current_bss || !wpa_s->current_ssid) 2047 return -1; 2048 2049 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt)) 2050 return 0; 2051 2052 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss, 2053 WPA_IE_VENDOR_TYPE); 2054 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN); 2055 2056 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa, 2057 bss_wpa ? 2 + bss_wpa[1] : 0) || 2058 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn, 2059 bss_rsn ? 2 + bss_rsn[1] : 0)) 2060 return -1; 2061 2062 return 0; 2063 } 2064 2065 2066 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s, 2067 union wpa_event_data *data) 2068 { 2069 u8 bssid[ETH_ALEN]; 2070 int ft_completed; 2071 int new_bss = 0; 2072 2073 #ifdef CONFIG_AP 2074 if (wpa_s->ap_iface) { 2075 if (!data) 2076 return; 2077 hostapd_notif_assoc(wpa_s->ap_iface->bss[0], 2078 data->assoc_info.addr, 2079 data->assoc_info.req_ies, 2080 data->assoc_info.req_ies_len, 2081 data->assoc_info.reassoc); 2082 return; 2083 } 2084 #endif /* CONFIG_AP */ 2085 2086 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL); 2087 2088 ft_completed = wpa_ft_is_completed(wpa_s->wpa); 2089 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0) 2090 return; 2091 2092 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) { 2093 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID"); 2094 wpa_supplicant_deauthenticate( 2095 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2096 return; 2097 } 2098 2099 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED); 2100 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) { 2101 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID=" 2102 MACSTR, MAC2STR(bssid)); 2103 new_bss = 1; 2104 random_add_randomness(bssid, ETH_ALEN); 2105 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN); 2106 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 2107 wpas_notify_bssid_changed(wpa_s); 2108 2109 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) { 2110 wpa_clear_keys(wpa_s, bssid); 2111 } 2112 if (wpa_supplicant_select_config(wpa_s) < 0) { 2113 wpa_supplicant_deauthenticate( 2114 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2115 return; 2116 } 2117 } 2118 2119 if (wpa_s->conf->ap_scan == 1 && 2120 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) { 2121 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0 && new_bss) 2122 wpa_msg(wpa_s, MSG_WARNING, 2123 "WPA/RSN IEs not updated"); 2124 } 2125 2126 #ifdef CONFIG_SME 2127 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN); 2128 wpa_s->sme.prev_bssid_set = 1; 2129 wpa_s->sme.last_unprot_disconnect.sec = 0; 2130 #endif /* CONFIG_SME */ 2131 2132 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid)); 2133 if (wpa_s->current_ssid) { 2134 /* When using scanning (ap_scan=1), SIM PC/SC interface can be 2135 * initialized before association, but for other modes, 2136 * initialize PC/SC here, if the current configuration needs 2137 * smartcard or SIM/USIM. */ 2138 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid); 2139 } 2140 wpa_sm_notify_assoc(wpa_s->wpa, bssid); 2141 if (wpa_s->l2) 2142 l2_packet_notify_auth_start(wpa_s->l2); 2143 2144 /* 2145 * Set portEnabled first to FALSE in order to get EAP state machine out 2146 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE 2147 * state machine may transit to AUTHENTICATING state based on obsolete 2148 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to 2149 * AUTHENTICATED without ever giving chance to EAP state machine to 2150 * reset the state. 2151 */ 2152 if (!ft_completed) { 2153 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 2154 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 2155 } 2156 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed) 2157 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 2158 /* 802.1X::portControl = Auto */ 2159 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE); 2160 wpa_s->eapol_received = 0; 2161 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 2162 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE || 2163 (wpa_s->current_ssid && 2164 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) { 2165 if (wpa_s->current_ssid && 2166 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE && 2167 (wpa_s->drv_flags & 2168 WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) { 2169 /* 2170 * Set the key after having received joined-IBSS event 2171 * from the driver. 2172 */ 2173 wpa_supplicant_set_wpa_none_key(wpa_s, 2174 wpa_s->current_ssid); 2175 } 2176 wpa_supplicant_cancel_auth_timeout(wpa_s); 2177 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2178 } else if (!ft_completed) { 2179 /* Timeout for receiving the first EAPOL packet */ 2180 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0); 2181 } 2182 wpa_supplicant_cancel_scan(wpa_s); 2183 2184 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 2185 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { 2186 /* 2187 * We are done; the driver will take care of RSN 4-way 2188 * handshake. 2189 */ 2190 wpa_supplicant_cancel_auth_timeout(wpa_s); 2191 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2192 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2193 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 2194 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 2195 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) { 2196 /* 2197 * The driver will take care of RSN 4-way handshake, so we need 2198 * to allow EAPOL supplicant to complete its work without 2199 * waiting for WPA supplicant. 2200 */ 2201 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2202 } else if (ft_completed) { 2203 /* 2204 * FT protocol completed - make sure EAPOL state machine ends 2205 * up in authenticated. 2206 */ 2207 wpa_supplicant_cancel_auth_timeout(wpa_s); 2208 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2209 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2210 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 2211 } 2212 2213 wpa_s->last_eapol_matches_bssid = 0; 2214 2215 if (wpa_s->pending_eapol_rx) { 2216 struct os_reltime now, age; 2217 os_get_reltime(&now); 2218 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age); 2219 if (age.sec == 0 && age.usec < 100000 && 2220 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) == 2221 0) { 2222 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL " 2223 "frame that was received just before " 2224 "association notification"); 2225 wpa_supplicant_rx_eapol( 2226 wpa_s, wpa_s->pending_eapol_rx_src, 2227 wpabuf_head(wpa_s->pending_eapol_rx), 2228 wpabuf_len(wpa_s->pending_eapol_rx)); 2229 } 2230 wpabuf_free(wpa_s->pending_eapol_rx); 2231 wpa_s->pending_eapol_rx = NULL; 2232 } 2233 2234 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 2235 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 2236 wpa_s->current_ssid && 2237 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) { 2238 /* Set static WEP keys again */ 2239 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid); 2240 } 2241 2242 #ifdef CONFIG_IBSS_RSN 2243 if (wpa_s->current_ssid && 2244 wpa_s->current_ssid->mode == WPAS_MODE_IBSS && 2245 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 2246 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE && 2247 wpa_s->ibss_rsn == NULL) { 2248 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s); 2249 if (!wpa_s->ibss_rsn) { 2250 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN"); 2251 wpa_supplicant_deauthenticate( 2252 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2253 return; 2254 } 2255 2256 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk); 2257 } 2258 #endif /* CONFIG_IBSS_RSN */ 2259 2260 wpas_wps_notify_assoc(wpa_s, bssid); 2261 2262 if (data) { 2263 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies, 2264 data->assoc_info.resp_ies_len, 2265 &data->assoc_info.wmm_params); 2266 2267 if (wpa_s->reassoc_same_bss) 2268 wmm_ac_restore_tspecs(wpa_s); 2269 } 2270 } 2271 2272 2273 static int disconnect_reason_recoverable(u16 reason_code) 2274 { 2275 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY || 2276 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA || 2277 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA; 2278 } 2279 2280 2281 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s, 2282 u16 reason_code, 2283 int locally_generated) 2284 { 2285 const u8 *bssid; 2286 2287 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 2288 /* 2289 * At least Host AP driver and a Prism3 card seemed to be 2290 * generating streams of disconnected events when configuring 2291 * IBSS for WPA-None. Ignore them for now. 2292 */ 2293 return; 2294 } 2295 2296 bssid = wpa_s->bssid; 2297 if (is_zero_ether_addr(bssid)) 2298 bssid = wpa_s->pending_bssid; 2299 2300 if (!is_zero_ether_addr(bssid) || 2301 wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2302 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR 2303 " reason=%d%s", 2304 MAC2STR(bssid), reason_code, 2305 locally_generated ? " locally_generated=1" : ""); 2306 } 2307 } 2308 2309 2310 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code, 2311 int locally_generated) 2312 { 2313 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE || 2314 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) 2315 return 0; /* Not in 4-way handshake with PSK */ 2316 2317 /* 2318 * It looks like connection was lost while trying to go through PSK 2319 * 4-way handshake. Filter out known disconnection cases that are caused 2320 * by something else than PSK mismatch to avoid confusing reports. 2321 */ 2322 2323 if (locally_generated) { 2324 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS) 2325 return 0; 2326 } 2327 2328 return 1; 2329 } 2330 2331 2332 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s, 2333 u16 reason_code, 2334 int locally_generated) 2335 { 2336 const u8 *bssid; 2337 int authenticating; 2338 u8 prev_pending_bssid[ETH_ALEN]; 2339 struct wpa_bss *fast_reconnect = NULL; 2340 struct wpa_ssid *fast_reconnect_ssid = NULL; 2341 struct wpa_ssid *last_ssid; 2342 2343 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING; 2344 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN); 2345 2346 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 2347 /* 2348 * At least Host AP driver and a Prism3 card seemed to be 2349 * generating streams of disconnected events when configuring 2350 * IBSS for WPA-None. Ignore them for now. 2351 */ 2352 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in " 2353 "IBSS/WPA-None mode"); 2354 return; 2355 } 2356 2357 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) { 2358 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - " 2359 "pre-shared key may be incorrect"); 2360 if (wpas_p2p_4way_hs_failed(wpa_s) > 0) 2361 return; /* P2P group removed */ 2362 wpas_auth_failed(wpa_s, "WRONG_KEY"); 2363 } 2364 if (!wpa_s->disconnected && 2365 (!wpa_s->auto_reconnect_disabled || 2366 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS || 2367 wpas_wps_searching(wpa_s))) { 2368 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to " 2369 "reconnect (wps=%d/%d wpa_state=%d)", 2370 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS, 2371 wpas_wps_searching(wpa_s), 2372 wpa_s->wpa_state); 2373 if (wpa_s->wpa_state == WPA_COMPLETED && 2374 wpa_s->current_ssid && 2375 wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 2376 !locally_generated && 2377 disconnect_reason_recoverable(reason_code)) { 2378 /* 2379 * It looks like the AP has dropped association with 2380 * us, but could allow us to get back in. Try to 2381 * reconnect to the same BSS without full scan to save 2382 * time for some common cases. 2383 */ 2384 fast_reconnect = wpa_s->current_bss; 2385 fast_reconnect_ssid = wpa_s->current_ssid; 2386 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING) 2387 wpa_supplicant_req_scan(wpa_s, 0, 100000); 2388 else 2389 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new " 2390 "immediate scan"); 2391 } else { 2392 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not " 2393 "try to re-connect"); 2394 wpa_s->reassociate = 0; 2395 wpa_s->disconnected = 1; 2396 if (!wpa_s->pno) 2397 wpa_supplicant_cancel_sched_scan(wpa_s); 2398 } 2399 bssid = wpa_s->bssid; 2400 if (is_zero_ether_addr(bssid)) 2401 bssid = wpa_s->pending_bssid; 2402 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 2403 wpas_connection_failed(wpa_s, bssid); 2404 wpa_sm_notify_disassoc(wpa_s->wpa); 2405 if (locally_generated) 2406 wpa_s->disconnect_reason = -reason_code; 2407 else 2408 wpa_s->disconnect_reason = reason_code; 2409 wpas_notify_disconnect_reason(wpa_s); 2410 if (wpa_supplicant_dynamic_keys(wpa_s)) { 2411 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys"); 2412 wpa_clear_keys(wpa_s, wpa_s->bssid); 2413 } 2414 last_ssid = wpa_s->current_ssid; 2415 wpa_supplicant_mark_disassoc(wpa_s); 2416 2417 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) { 2418 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid); 2419 wpa_s->current_ssid = last_ssid; 2420 } 2421 2422 if (fast_reconnect && 2423 !wpas_network_disabled(wpa_s, fast_reconnect_ssid) && 2424 !disallowed_bssid(wpa_s, fast_reconnect->bssid) && 2425 !disallowed_ssid(wpa_s, fast_reconnect->ssid, 2426 fast_reconnect->ssid_len) && 2427 !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) { 2428 #ifndef CONFIG_NO_SCAN_PROCESSING 2429 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS"); 2430 if (wpa_supplicant_connect(wpa_s, fast_reconnect, 2431 fast_reconnect_ssid) < 0) { 2432 /* Recover through full scan */ 2433 wpa_supplicant_req_scan(wpa_s, 0, 100000); 2434 } 2435 #endif /* CONFIG_NO_SCAN_PROCESSING */ 2436 } else if (fast_reconnect) { 2437 /* 2438 * Could not reconnect to the same BSS due to network being 2439 * disabled. Use a new scan to match the alternative behavior 2440 * above, i.e., to continue automatic reconnection attempt in a 2441 * way that enforces disabled network rules. 2442 */ 2443 wpa_supplicant_req_scan(wpa_s, 0, 100000); 2444 } 2445 } 2446 2447 2448 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 2449 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx) 2450 { 2451 struct wpa_supplicant *wpa_s = eloop_ctx; 2452 2453 if (!wpa_s->pending_mic_error_report) 2454 return; 2455 2456 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report"); 2457 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise); 2458 wpa_s->pending_mic_error_report = 0; 2459 } 2460 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 2461 2462 2463 static void 2464 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s, 2465 union wpa_event_data *data) 2466 { 2467 int pairwise; 2468 struct os_reltime t; 2469 2470 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected"); 2471 pairwise = (data && data->michael_mic_failure.unicast); 2472 os_get_reltime(&t); 2473 if ((wpa_s->last_michael_mic_error.sec && 2474 !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) || 2475 wpa_s->pending_mic_error_report) { 2476 if (wpa_s->pending_mic_error_report) { 2477 /* 2478 * Send the pending MIC error report immediately since 2479 * we are going to start countermeasures and AP better 2480 * do the same. 2481 */ 2482 wpa_sm_key_request(wpa_s->wpa, 1, 2483 wpa_s->pending_mic_error_pairwise); 2484 } 2485 2486 /* Send the new MIC error report immediately since we are going 2487 * to start countermeasures and AP better do the same. 2488 */ 2489 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 2490 2491 /* initialize countermeasures */ 2492 wpa_s->countermeasures = 1; 2493 2494 wpa_blacklist_add(wpa_s, wpa_s->bssid); 2495 2496 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started"); 2497 2498 /* 2499 * Need to wait for completion of request frame. We do not get 2500 * any callback for the message completion, so just wait a 2501 * short while and hope for the best. */ 2502 os_sleep(0, 10000); 2503 2504 wpa_drv_set_countermeasures(wpa_s, 1); 2505 wpa_supplicant_deauthenticate(wpa_s, 2506 WLAN_REASON_MICHAEL_MIC_FAILURE); 2507 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, 2508 wpa_s, NULL); 2509 eloop_register_timeout(60, 0, 2510 wpa_supplicant_stop_countermeasures, 2511 wpa_s, NULL); 2512 /* TODO: mark the AP rejected for 60 second. STA is 2513 * allowed to associate with another AP.. */ 2514 } else { 2515 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 2516 if (wpa_s->mic_errors_seen) { 2517 /* 2518 * Reduce the effectiveness of Michael MIC error 2519 * reports as a means for attacking against TKIP if 2520 * more than one MIC failure is noticed with the same 2521 * PTK. We delay the transmission of the reports by a 2522 * random time between 0 and 60 seconds in order to 2523 * force the attacker wait 60 seconds before getting 2524 * the information on whether a frame resulted in a MIC 2525 * failure. 2526 */ 2527 u8 rval[4]; 2528 int sec; 2529 2530 if (os_get_random(rval, sizeof(rval)) < 0) 2531 sec = os_random() % 60; 2532 else 2533 sec = WPA_GET_BE32(rval) % 60; 2534 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error " 2535 "report %d seconds", sec); 2536 wpa_s->pending_mic_error_report = 1; 2537 wpa_s->pending_mic_error_pairwise = pairwise; 2538 eloop_cancel_timeout( 2539 wpa_supplicant_delayed_mic_error_report, 2540 wpa_s, NULL); 2541 eloop_register_timeout( 2542 sec, os_random() % 1000000, 2543 wpa_supplicant_delayed_mic_error_report, 2544 wpa_s, NULL); 2545 } else { 2546 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 2547 } 2548 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 2549 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 2550 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 2551 } 2552 wpa_s->last_michael_mic_error = t; 2553 wpa_s->mic_errors_seen++; 2554 } 2555 2556 2557 #ifdef CONFIG_TERMINATE_ONLASTIF 2558 static int any_interfaces(struct wpa_supplicant *head) 2559 { 2560 struct wpa_supplicant *wpa_s; 2561 2562 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next) 2563 if (!wpa_s->interface_removed) 2564 return 1; 2565 return 0; 2566 } 2567 #endif /* CONFIG_TERMINATE_ONLASTIF */ 2568 2569 2570 static void 2571 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s, 2572 union wpa_event_data *data) 2573 { 2574 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0) 2575 return; 2576 2577 switch (data->interface_status.ievent) { 2578 case EVENT_INTERFACE_ADDED: 2579 if (!wpa_s->interface_removed) 2580 break; 2581 wpa_s->interface_removed = 0; 2582 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added"); 2583 if (wpa_supplicant_driver_init(wpa_s) < 0) { 2584 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the " 2585 "driver after interface was added"); 2586 } 2587 2588 #ifdef CONFIG_P2P 2589 if (!wpa_s->global->p2p && 2590 !wpa_s->global->p2p_disabled && 2591 !wpa_s->conf->p2p_disabled && 2592 (wpa_s->drv_flags & 2593 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) && 2594 wpas_p2p_add_p2pdev_interface( 2595 wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) { 2596 wpa_printf(MSG_INFO, 2597 "P2P: Failed to enable P2P Device interface"); 2598 /* Try to continue without. P2P will be disabled. */ 2599 } 2600 #endif /* CONFIG_P2P */ 2601 2602 break; 2603 case EVENT_INTERFACE_REMOVED: 2604 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed"); 2605 wpa_s->interface_removed = 1; 2606 wpa_supplicant_mark_disassoc(wpa_s); 2607 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 2608 l2_packet_deinit(wpa_s->l2); 2609 wpa_s->l2 = NULL; 2610 2611 #ifdef CONFIG_P2P 2612 if (wpa_s->global->p2p && 2613 wpa_s->global->p2p_init_wpa_s->parent == wpa_s && 2614 (wpa_s->drv_flags & 2615 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) { 2616 wpa_dbg(wpa_s, MSG_DEBUG, 2617 "Removing P2P Device interface"); 2618 wpa_supplicant_remove_iface( 2619 wpa_s->global, wpa_s->global->p2p_init_wpa_s, 2620 0); 2621 wpa_s->global->p2p_init_wpa_s = NULL; 2622 } 2623 #endif /* CONFIG_P2P */ 2624 2625 #ifdef CONFIG_TERMINATE_ONLASTIF 2626 /* check if last interface */ 2627 if (!any_interfaces(wpa_s->global->ifaces)) 2628 eloop_terminate(); 2629 #endif /* CONFIG_TERMINATE_ONLASTIF */ 2630 break; 2631 } 2632 } 2633 2634 2635 #ifdef CONFIG_PEERKEY 2636 static void 2637 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s, 2638 union wpa_event_data *data) 2639 { 2640 if (data == NULL) 2641 return; 2642 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer); 2643 } 2644 #endif /* CONFIG_PEERKEY */ 2645 2646 2647 #ifdef CONFIG_TDLS 2648 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s, 2649 union wpa_event_data *data) 2650 { 2651 if (data == NULL) 2652 return; 2653 switch (data->tdls.oper) { 2654 case TDLS_REQUEST_SETUP: 2655 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer); 2656 if (wpa_tdls_is_external_setup(wpa_s->wpa)) 2657 wpa_tdls_start(wpa_s->wpa, data->tdls.peer); 2658 else 2659 wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer); 2660 break; 2661 case TDLS_REQUEST_TEARDOWN: 2662 if (wpa_tdls_is_external_setup(wpa_s->wpa)) 2663 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer, 2664 data->tdls.reason_code); 2665 else 2666 wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN, 2667 data->tdls.peer); 2668 break; 2669 case TDLS_REQUEST_DISCOVER: 2670 wpa_tdls_send_discovery_request(wpa_s->wpa, 2671 data->tdls.peer); 2672 break; 2673 } 2674 } 2675 #endif /* CONFIG_TDLS */ 2676 2677 2678 #ifdef CONFIG_WNM 2679 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s, 2680 union wpa_event_data *data) 2681 { 2682 if (data == NULL) 2683 return; 2684 switch (data->wnm.oper) { 2685 case WNM_OPER_SLEEP: 2686 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request " 2687 "(action=%d, intval=%d)", 2688 data->wnm.sleep_action, data->wnm.sleep_intval); 2689 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action, 2690 data->wnm.sleep_intval, NULL); 2691 break; 2692 } 2693 } 2694 #endif /* CONFIG_WNM */ 2695 2696 2697 #ifdef CONFIG_IEEE80211R 2698 static void 2699 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s, 2700 union wpa_event_data *data) 2701 { 2702 if (data == NULL) 2703 return; 2704 2705 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies, 2706 data->ft_ies.ies_len, 2707 data->ft_ies.ft_action, 2708 data->ft_ies.target_ap, 2709 data->ft_ies.ric_ies, 2710 data->ft_ies.ric_ies_len) < 0) { 2711 /* TODO: prevent MLME/driver from trying to associate? */ 2712 } 2713 } 2714 #endif /* CONFIG_IEEE80211R */ 2715 2716 2717 #ifdef CONFIG_IBSS_RSN 2718 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s, 2719 union wpa_event_data *data) 2720 { 2721 struct wpa_ssid *ssid; 2722 if (wpa_s->wpa_state < WPA_ASSOCIATED) 2723 return; 2724 if (data == NULL) 2725 return; 2726 ssid = wpa_s->current_ssid; 2727 if (ssid == NULL) 2728 return; 2729 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt)) 2730 return; 2731 2732 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer); 2733 } 2734 2735 2736 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s, 2737 union wpa_event_data *data) 2738 { 2739 struct wpa_ssid *ssid = wpa_s->current_ssid; 2740 2741 if (ssid == NULL) 2742 return; 2743 2744 /* check if the ssid is correctly configured as IBSS/RSN */ 2745 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt)) 2746 return; 2747 2748 ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame, 2749 data->rx_mgmt.frame_len); 2750 } 2751 #endif /* CONFIG_IBSS_RSN */ 2752 2753 2754 #ifdef CONFIG_IEEE80211R 2755 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data, 2756 size_t len) 2757 { 2758 const u8 *sta_addr, *target_ap_addr; 2759 u16 status; 2760 2761 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len); 2762 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) 2763 return; /* only SME case supported for now */ 2764 if (len < 1 + 2 * ETH_ALEN + 2) 2765 return; 2766 if (data[0] != 2) 2767 return; /* Only FT Action Response is supported for now */ 2768 sta_addr = data + 1; 2769 target_ap_addr = data + 1 + ETH_ALEN; 2770 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN); 2771 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA " 2772 MACSTR " TargetAP " MACSTR " status %u", 2773 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status); 2774 2775 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) { 2776 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR 2777 " in FT Action Response", MAC2STR(sta_addr)); 2778 return; 2779 } 2780 2781 if (status) { 2782 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates " 2783 "failure (status code %d)", status); 2784 /* TODO: report error to FT code(?) */ 2785 return; 2786 } 2787 2788 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2, 2789 len - (1 + 2 * ETH_ALEN + 2), 1, 2790 target_ap_addr, NULL, 0) < 0) 2791 return; 2792 2793 #ifdef CONFIG_SME 2794 { 2795 struct wpa_bss *bss; 2796 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr); 2797 if (bss) 2798 wpa_s->sme.freq = bss->freq; 2799 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT; 2800 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr, 2801 WLAN_AUTH_FT); 2802 } 2803 #endif /* CONFIG_SME */ 2804 } 2805 #endif /* CONFIG_IEEE80211R */ 2806 2807 2808 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s, 2809 struct unprot_deauth *e) 2810 { 2811 #ifdef CONFIG_IEEE80211W 2812 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame " 2813 "dropped: " MACSTR " -> " MACSTR 2814 " (reason code %u)", 2815 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code); 2816 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code); 2817 #endif /* CONFIG_IEEE80211W */ 2818 } 2819 2820 2821 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s, 2822 struct unprot_disassoc *e) 2823 { 2824 #ifdef CONFIG_IEEE80211W 2825 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame " 2826 "dropped: " MACSTR " -> " MACSTR 2827 " (reason code %u)", 2828 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code); 2829 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code); 2830 #endif /* CONFIG_IEEE80211W */ 2831 } 2832 2833 2834 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr, 2835 u16 reason_code, int locally_generated, 2836 const u8 *ie, size_t ie_len, int deauth) 2837 { 2838 #ifdef CONFIG_AP 2839 if (wpa_s->ap_iface && addr) { 2840 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr); 2841 return; 2842 } 2843 2844 if (wpa_s->ap_iface) { 2845 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode"); 2846 return; 2847 } 2848 #endif /* CONFIG_AP */ 2849 2850 if (!locally_generated) 2851 wpa_s->own_disconnect_req = 0; 2852 2853 wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated); 2854 2855 if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED || 2856 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) || 2857 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) && 2858 eapol_sm_failed(wpa_s->eapol))) && 2859 !wpa_s->eap_expected_failure)) 2860 wpas_auth_failed(wpa_s, "AUTH_FAILED"); 2861 2862 #ifdef CONFIG_P2P 2863 if (deauth && reason_code > 0) { 2864 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len, 2865 locally_generated) > 0) { 2866 /* 2867 * The interface was removed, so cannot continue 2868 * processing any additional operations after this. 2869 */ 2870 return; 2871 } 2872 } 2873 #endif /* CONFIG_P2P */ 2874 2875 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code, 2876 locally_generated); 2877 } 2878 2879 2880 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s, 2881 struct disassoc_info *info) 2882 { 2883 u16 reason_code = 0; 2884 int locally_generated = 0; 2885 const u8 *addr = NULL; 2886 const u8 *ie = NULL; 2887 size_t ie_len = 0; 2888 2889 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification"); 2890 2891 if (info) { 2892 addr = info->addr; 2893 ie = info->ie; 2894 ie_len = info->ie_len; 2895 reason_code = info->reason_code; 2896 locally_generated = info->locally_generated; 2897 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code, 2898 locally_generated ? " (locally generated)" : ""); 2899 if (addr) 2900 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR, 2901 MAC2STR(addr)); 2902 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)", 2903 ie, ie_len); 2904 } 2905 2906 #ifdef CONFIG_AP 2907 if (wpa_s->ap_iface && info && info->addr) { 2908 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr); 2909 return; 2910 } 2911 2912 if (wpa_s->ap_iface) { 2913 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode"); 2914 return; 2915 } 2916 #endif /* CONFIG_AP */ 2917 2918 #ifdef CONFIG_P2P 2919 if (info) { 2920 wpas_p2p_disassoc_notif( 2921 wpa_s, info->addr, reason_code, info->ie, info->ie_len, 2922 locally_generated); 2923 } 2924 #endif /* CONFIG_P2P */ 2925 2926 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 2927 sme_event_disassoc(wpa_s, info); 2928 2929 wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated, 2930 ie, ie_len, 0); 2931 } 2932 2933 2934 static void wpas_event_deauth(struct wpa_supplicant *wpa_s, 2935 struct deauth_info *info) 2936 { 2937 u16 reason_code = 0; 2938 int locally_generated = 0; 2939 const u8 *addr = NULL; 2940 const u8 *ie = NULL; 2941 size_t ie_len = 0; 2942 2943 wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification"); 2944 2945 if (info) { 2946 addr = info->addr; 2947 ie = info->ie; 2948 ie_len = info->ie_len; 2949 reason_code = info->reason_code; 2950 locally_generated = info->locally_generated; 2951 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", 2952 reason_code, 2953 locally_generated ? " (locally generated)" : ""); 2954 if (addr) { 2955 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR, 2956 MAC2STR(addr)); 2957 } 2958 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)", 2959 ie, ie_len); 2960 } 2961 2962 wpa_reset_ft_completed(wpa_s->wpa); 2963 2964 wpas_event_disconnect(wpa_s, addr, reason_code, 2965 locally_generated, ie, ie_len, 1); 2966 } 2967 2968 2969 static const char * reg_init_str(enum reg_change_initiator init) 2970 { 2971 switch (init) { 2972 case REGDOM_SET_BY_CORE: 2973 return "CORE"; 2974 case REGDOM_SET_BY_USER: 2975 return "USER"; 2976 case REGDOM_SET_BY_DRIVER: 2977 return "DRIVER"; 2978 case REGDOM_SET_BY_COUNTRY_IE: 2979 return "COUNTRY_IE"; 2980 case REGDOM_BEACON_HINT: 2981 return "BEACON_HINT"; 2982 } 2983 return "?"; 2984 } 2985 2986 2987 static const char * reg_type_str(enum reg_type type) 2988 { 2989 switch (type) { 2990 case REGDOM_TYPE_UNKNOWN: 2991 return "UNKNOWN"; 2992 case REGDOM_TYPE_COUNTRY: 2993 return "COUNTRY"; 2994 case REGDOM_TYPE_WORLD: 2995 return "WORLD"; 2996 case REGDOM_TYPE_CUSTOM_WORLD: 2997 return "CUSTOM_WORLD"; 2998 case REGDOM_TYPE_INTERSECTION: 2999 return "INTERSECTION"; 3000 } 3001 return "?"; 3002 } 3003 3004 3005 static void wpa_supplicant_update_channel_list( 3006 struct wpa_supplicant *wpa_s, struct channel_list_changed *info) 3007 { 3008 struct wpa_supplicant *ifs; 3009 3010 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s", 3011 reg_init_str(info->initiator), reg_type_str(info->type), 3012 info->alpha2[0] ? " alpha2=" : "", 3013 info->alpha2[0] ? info->alpha2 : ""); 3014 3015 if (wpa_s->drv_priv == NULL) 3016 return; /* Ignore event during drv initialization */ 3017 3018 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 3019 radio_list) { 3020 wpa_printf(MSG_DEBUG, "%s: Updating hw mode", 3021 ifs->ifname); 3022 free_hw_features(ifs); 3023 ifs->hw.modes = wpa_drv_get_hw_feature_data( 3024 ifs, &ifs->hw.num_modes, &ifs->hw.flags); 3025 } 3026 3027 /* Restart sched_scan with updated channel list */ 3028 if (wpa_s->sched_scanning) { 3029 wpa_dbg(wpa_s, MSG_DEBUG, 3030 "Channel list changed restart sched scan."); 3031 wpa_supplicant_cancel_sched_scan(wpa_s); 3032 wpa_supplicant_req_scan(wpa_s, 0, 0); 3033 } 3034 3035 wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_DRIVER); 3036 } 3037 3038 3039 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s, 3040 const u8 *frame, size_t len, int freq, 3041 int rssi) 3042 { 3043 const struct ieee80211_mgmt *mgmt; 3044 const u8 *payload; 3045 size_t plen; 3046 u8 category; 3047 3048 if (len < IEEE80211_HDRLEN + 2) 3049 return; 3050 3051 mgmt = (const struct ieee80211_mgmt *) frame; 3052 payload = frame + IEEE80211_HDRLEN; 3053 category = *payload++; 3054 plen = len - IEEE80211_HDRLEN - 1; 3055 3056 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR 3057 " Category=%u DataLen=%d freq=%d MHz", 3058 MAC2STR(mgmt->sa), category, (int) plen, freq); 3059 3060 if (category == WLAN_ACTION_WMM) { 3061 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen); 3062 return; 3063 } 3064 3065 #ifdef CONFIG_IEEE80211R 3066 if (category == WLAN_ACTION_FT) { 3067 ft_rx_action(wpa_s, payload, plen); 3068 return; 3069 } 3070 #endif /* CONFIG_IEEE80211R */ 3071 3072 #ifdef CONFIG_IEEE80211W 3073 #ifdef CONFIG_SME 3074 if (category == WLAN_ACTION_SA_QUERY) { 3075 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen); 3076 return; 3077 } 3078 #endif /* CONFIG_SME */ 3079 #endif /* CONFIG_IEEE80211W */ 3080 3081 #ifdef CONFIG_WNM 3082 if (mgmt->u.action.category == WLAN_ACTION_WNM) { 3083 ieee802_11_rx_wnm_action(wpa_s, mgmt, len); 3084 return; 3085 } 3086 #endif /* CONFIG_WNM */ 3087 3088 #ifdef CONFIG_GAS 3089 if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC || 3090 mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) && 3091 gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid, 3092 mgmt->u.action.category, 3093 payload, plen, freq) == 0) 3094 return; 3095 #endif /* CONFIG_GAS */ 3096 3097 #ifdef CONFIG_TDLS 3098 if (category == WLAN_ACTION_PUBLIC && plen >= 4 && 3099 payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) { 3100 wpa_dbg(wpa_s, MSG_DEBUG, 3101 "TDLS: Received Discovery Response from " MACSTR, 3102 MAC2STR(mgmt->sa)); 3103 return; 3104 } 3105 #endif /* CONFIG_TDLS */ 3106 3107 #ifdef CONFIG_INTERWORKING 3108 if (category == WLAN_ACTION_QOS && plen >= 1 && 3109 payload[0] == QOS_QOS_MAP_CONFIG) { 3110 const u8 *pos = payload + 1; 3111 size_t qlen = plen - 1; 3112 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from " 3113 MACSTR, MAC2STR(mgmt->sa)); 3114 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 && 3115 qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET && 3116 pos[1] <= qlen - 2 && pos[1] >= 16) 3117 wpas_qos_map_set(wpa_s, pos + 2, pos[1]); 3118 return; 3119 } 3120 #endif /* CONFIG_INTERWORKING */ 3121 3122 if (category == WLAN_ACTION_RADIO_MEASUREMENT && 3123 payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) { 3124 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1); 3125 return; 3126 } 3127 3128 if (category == WLAN_ACTION_RADIO_MEASUREMENT && 3129 payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) { 3130 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa, 3131 payload + 1, plen - 1, 3132 rssi); 3133 return; 3134 } 3135 3136 #ifdef CONFIG_FST 3137 if (mgmt->u.action.category == WLAN_ACTION_FST && wpa_s->fst) { 3138 fst_rx_action(wpa_s->fst, mgmt, len); 3139 return; 3140 } 3141 #endif /* CONFIG_FST */ 3142 3143 wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid, 3144 category, payload, plen, freq); 3145 if (wpa_s->ifmsh) 3146 mesh_mpm_action_rx(wpa_s, mgmt, len); 3147 } 3148 3149 3150 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s, 3151 union wpa_event_data *event) 3152 { 3153 struct wpa_freq_range_list *list; 3154 char *str = NULL; 3155 3156 list = &event->freq_range; 3157 3158 if (list->num) 3159 str = freq_range_list_str(list); 3160 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s", 3161 str ? str : ""); 3162 3163 #ifdef CONFIG_P2P 3164 if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) { 3165 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range", 3166 __func__); 3167 } else { 3168 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event"); 3169 3170 /* 3171 * The update channel flow will also take care of moving a GO 3172 * from the unsafe frequency if needed. 3173 */ 3174 wpas_p2p_update_channel_list(wpa_s, 3175 WPAS_P2P_CHANNEL_UPDATE_AVOID); 3176 } 3177 #endif /* CONFIG_P2P */ 3178 3179 os_free(str); 3180 } 3181 3182 3183 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s, 3184 union wpa_event_data *data) 3185 { 3186 wpa_dbg(wpa_s, MSG_DEBUG, 3187 "Connection authorized by device, previous state %d", 3188 wpa_s->wpa_state); 3189 if (wpa_s->wpa_state == WPA_ASSOCIATED) { 3190 wpa_supplicant_cancel_auth_timeout(wpa_s); 3191 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 3192 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 3193 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 3194 } 3195 wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr); 3196 wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck, 3197 data->assoc_info.ptk_kck_len, 3198 data->assoc_info.ptk_kek, 3199 data->assoc_info.ptk_kek_len); 3200 } 3201 3202 3203 void wpa_supplicant_event(void *ctx, enum wpa_event_type event, 3204 union wpa_event_data *data) 3205 { 3206 struct wpa_supplicant *wpa_s = ctx; 3207 int resched; 3208 3209 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED && 3210 event != EVENT_INTERFACE_ENABLED && 3211 event != EVENT_INTERFACE_STATUS && 3212 event != EVENT_SCHED_SCAN_STOPPED) { 3213 wpa_dbg(wpa_s, MSG_DEBUG, 3214 "Ignore event %s (%d) while interface is disabled", 3215 event_to_string(event), event); 3216 return; 3217 } 3218 3219 #ifndef CONFIG_NO_STDOUT_DEBUG 3220 { 3221 int level = MSG_DEBUG; 3222 3223 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) { 3224 const struct ieee80211_hdr *hdr; 3225 u16 fc; 3226 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame; 3227 fc = le_to_host16(hdr->frame_control); 3228 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 3229 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON) 3230 level = MSG_EXCESSIVE; 3231 } 3232 3233 wpa_dbg(wpa_s, level, "Event %s (%d) received", 3234 event_to_string(event), event); 3235 } 3236 #endif /* CONFIG_NO_STDOUT_DEBUG */ 3237 3238 switch (event) { 3239 case EVENT_AUTH: 3240 sme_event_auth(wpa_s, data); 3241 break; 3242 case EVENT_ASSOC: 3243 wpa_supplicant_event_assoc(wpa_s, data); 3244 if (data && data->assoc_info.authorized) 3245 wpa_supplicant_event_assoc_auth(wpa_s, data); 3246 break; 3247 case EVENT_DISASSOC: 3248 wpas_event_disassoc(wpa_s, 3249 data ? &data->disassoc_info : NULL); 3250 break; 3251 case EVENT_DEAUTH: 3252 wpas_event_deauth(wpa_s, 3253 data ? &data->deauth_info : NULL); 3254 break; 3255 case EVENT_MICHAEL_MIC_FAILURE: 3256 wpa_supplicant_event_michael_mic_failure(wpa_s, data); 3257 break; 3258 #ifndef CONFIG_NO_SCAN_PROCESSING 3259 case EVENT_SCAN_STARTED: 3260 os_get_reltime(&wpa_s->scan_start_time); 3261 if (wpa_s->own_scan_requested) { 3262 struct os_reltime diff; 3263 3264 os_reltime_sub(&wpa_s->scan_start_time, 3265 &wpa_s->scan_trigger_time, &diff); 3266 wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds", 3267 diff.sec, diff.usec); 3268 wpa_s->own_scan_requested = 0; 3269 wpa_s->own_scan_running = 1; 3270 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && 3271 wpa_s->manual_scan_use_id) { 3272 wpa_msg_ctrl(wpa_s, MSG_INFO, 3273 WPA_EVENT_SCAN_STARTED "id=%u", 3274 wpa_s->manual_scan_id); 3275 } else { 3276 wpa_msg_ctrl(wpa_s, MSG_INFO, 3277 WPA_EVENT_SCAN_STARTED); 3278 } 3279 } else { 3280 wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan"); 3281 wpa_s->radio->external_scan_running = 1; 3282 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED); 3283 } 3284 break; 3285 case EVENT_SCAN_RESULTS: 3286 if (os_reltime_initialized(&wpa_s->scan_start_time)) { 3287 struct os_reltime now, diff; 3288 os_get_reltime(&now); 3289 os_reltime_sub(&now, &wpa_s->scan_start_time, &diff); 3290 wpa_s->scan_start_time.sec = 0; 3291 wpa_s->scan_start_time.usec = 0; 3292 wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds", 3293 diff.sec, diff.usec); 3294 } 3295 if (wpa_supplicant_event_scan_results(wpa_s, data)) 3296 break; /* interface may have been removed */ 3297 wpa_s->own_scan_running = 0; 3298 wpa_s->radio->external_scan_running = 0; 3299 radio_work_check_next(wpa_s); 3300 break; 3301 #endif /* CONFIG_NO_SCAN_PROCESSING */ 3302 case EVENT_ASSOCINFO: 3303 wpa_supplicant_event_associnfo(wpa_s, data); 3304 break; 3305 case EVENT_INTERFACE_STATUS: 3306 wpa_supplicant_event_interface_status(wpa_s, data); 3307 break; 3308 case EVENT_PMKID_CANDIDATE: 3309 wpa_supplicant_event_pmkid_candidate(wpa_s, data); 3310 break; 3311 #ifdef CONFIG_PEERKEY 3312 case EVENT_STKSTART: 3313 wpa_supplicant_event_stkstart(wpa_s, data); 3314 break; 3315 #endif /* CONFIG_PEERKEY */ 3316 #ifdef CONFIG_TDLS 3317 case EVENT_TDLS: 3318 wpa_supplicant_event_tdls(wpa_s, data); 3319 break; 3320 #endif /* CONFIG_TDLS */ 3321 #ifdef CONFIG_WNM 3322 case EVENT_WNM: 3323 wpa_supplicant_event_wnm(wpa_s, data); 3324 break; 3325 #endif /* CONFIG_WNM */ 3326 #ifdef CONFIG_IEEE80211R 3327 case EVENT_FT_RESPONSE: 3328 wpa_supplicant_event_ft_response(wpa_s, data); 3329 break; 3330 #endif /* CONFIG_IEEE80211R */ 3331 #ifdef CONFIG_IBSS_RSN 3332 case EVENT_IBSS_RSN_START: 3333 wpa_supplicant_event_ibss_rsn_start(wpa_s, data); 3334 break; 3335 #endif /* CONFIG_IBSS_RSN */ 3336 case EVENT_ASSOC_REJECT: 3337 if (data->assoc_reject.bssid) 3338 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT 3339 "bssid=" MACSTR " status_code=%u", 3340 MAC2STR(data->assoc_reject.bssid), 3341 data->assoc_reject.status_code); 3342 else 3343 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT 3344 "status_code=%u", 3345 data->assoc_reject.status_code); 3346 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 3347 sme_event_assoc_reject(wpa_s, data); 3348 else { 3349 const u8 *bssid = data->assoc_reject.bssid; 3350 if (bssid == NULL || is_zero_ether_addr(bssid)) 3351 bssid = wpa_s->pending_bssid; 3352 wpas_connection_failed(wpa_s, bssid); 3353 wpa_supplicant_mark_disassoc(wpa_s); 3354 } 3355 break; 3356 case EVENT_AUTH_TIMED_OUT: 3357 /* It is possible to get this event from earlier connection */ 3358 if (wpa_s->current_ssid && 3359 wpa_s->current_ssid->mode == WPAS_MODE_MESH) { 3360 wpa_dbg(wpa_s, MSG_DEBUG, 3361 "Ignore AUTH_TIMED_OUT in mesh configuration"); 3362 break; 3363 } 3364 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 3365 sme_event_auth_timed_out(wpa_s, data); 3366 break; 3367 case EVENT_ASSOC_TIMED_OUT: 3368 /* It is possible to get this event from earlier connection */ 3369 if (wpa_s->current_ssid && 3370 wpa_s->current_ssid->mode == WPAS_MODE_MESH) { 3371 wpa_dbg(wpa_s, MSG_DEBUG, 3372 "Ignore ASSOC_TIMED_OUT in mesh configuration"); 3373 break; 3374 } 3375 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 3376 sme_event_assoc_timed_out(wpa_s, data); 3377 break; 3378 case EVENT_TX_STATUS: 3379 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR 3380 " type=%d stype=%d", 3381 MAC2STR(data->tx_status.dst), 3382 data->tx_status.type, data->tx_status.stype); 3383 #ifdef CONFIG_AP 3384 if (wpa_s->ap_iface == NULL) { 3385 #ifdef CONFIG_OFFCHANNEL 3386 if (data->tx_status.type == WLAN_FC_TYPE_MGMT && 3387 data->tx_status.stype == WLAN_FC_STYPE_ACTION) 3388 offchannel_send_action_tx_status( 3389 wpa_s, data->tx_status.dst, 3390 data->tx_status.data, 3391 data->tx_status.data_len, 3392 data->tx_status.ack ? 3393 OFFCHANNEL_SEND_ACTION_SUCCESS : 3394 OFFCHANNEL_SEND_ACTION_NO_ACK); 3395 #endif /* CONFIG_OFFCHANNEL */ 3396 break; 3397 } 3398 #endif /* CONFIG_AP */ 3399 #ifdef CONFIG_OFFCHANNEL 3400 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst=" 3401 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst)); 3402 /* 3403 * Catch TX status events for Action frames we sent via group 3404 * interface in GO mode. 3405 */ 3406 if (data->tx_status.type == WLAN_FC_TYPE_MGMT && 3407 data->tx_status.stype == WLAN_FC_STYPE_ACTION && 3408 os_memcmp(wpa_s->parent->pending_action_dst, 3409 data->tx_status.dst, ETH_ALEN) == 0) { 3410 offchannel_send_action_tx_status( 3411 wpa_s->parent, data->tx_status.dst, 3412 data->tx_status.data, 3413 data->tx_status.data_len, 3414 data->tx_status.ack ? 3415 OFFCHANNEL_SEND_ACTION_SUCCESS : 3416 OFFCHANNEL_SEND_ACTION_NO_ACK); 3417 break; 3418 } 3419 #endif /* CONFIG_OFFCHANNEL */ 3420 #ifdef CONFIG_AP 3421 switch (data->tx_status.type) { 3422 case WLAN_FC_TYPE_MGMT: 3423 ap_mgmt_tx_cb(wpa_s, data->tx_status.data, 3424 data->tx_status.data_len, 3425 data->tx_status.stype, 3426 data->tx_status.ack); 3427 break; 3428 case WLAN_FC_TYPE_DATA: 3429 ap_tx_status(wpa_s, data->tx_status.dst, 3430 data->tx_status.data, 3431 data->tx_status.data_len, 3432 data->tx_status.ack); 3433 break; 3434 } 3435 #endif /* CONFIG_AP */ 3436 break; 3437 #ifdef CONFIG_AP 3438 case EVENT_EAPOL_TX_STATUS: 3439 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst, 3440 data->eapol_tx_status.data, 3441 data->eapol_tx_status.data_len, 3442 data->eapol_tx_status.ack); 3443 break; 3444 case EVENT_DRIVER_CLIENT_POLL_OK: 3445 ap_client_poll_ok(wpa_s, data->client_poll.addr); 3446 break; 3447 case EVENT_RX_FROM_UNKNOWN: 3448 if (wpa_s->ap_iface == NULL) 3449 break; 3450 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr, 3451 data->rx_from_unknown.wds); 3452 break; 3453 case EVENT_CH_SWITCH: 3454 if (!data) 3455 break; 3456 if (!wpa_s->ap_iface) { 3457 wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch " 3458 "event in non-AP mode"); 3459 break; 3460 } 3461 3462 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq, 3463 data->ch_switch.ht_enabled, 3464 data->ch_switch.ch_offset, 3465 data->ch_switch.ch_width, 3466 data->ch_switch.cf1, 3467 data->ch_switch.cf2); 3468 break; 3469 #ifdef NEED_AP_MLME 3470 case EVENT_DFS_RADAR_DETECTED: 3471 if (data) 3472 wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event); 3473 break; 3474 case EVENT_DFS_CAC_STARTED: 3475 if (data) 3476 wpas_event_dfs_cac_started(wpa_s, &data->dfs_event); 3477 break; 3478 case EVENT_DFS_CAC_FINISHED: 3479 if (data) 3480 wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event); 3481 break; 3482 case EVENT_DFS_CAC_ABORTED: 3483 if (data) 3484 wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event); 3485 break; 3486 case EVENT_DFS_NOP_FINISHED: 3487 if (data) 3488 wpas_event_dfs_cac_nop_finished(wpa_s, 3489 &data->dfs_event); 3490 break; 3491 #endif /* NEED_AP_MLME */ 3492 #endif /* CONFIG_AP */ 3493 case EVENT_RX_MGMT: { 3494 u16 fc, stype; 3495 const struct ieee80211_mgmt *mgmt; 3496 3497 #ifdef CONFIG_TESTING_OPTIONS 3498 if (wpa_s->ext_mgmt_frame_handling) { 3499 struct rx_mgmt *rx = &data->rx_mgmt; 3500 size_t hex_len = 2 * rx->frame_len + 1; 3501 char *hex = os_malloc(hex_len); 3502 if (hex) { 3503 wpa_snprintf_hex(hex, hex_len, 3504 rx->frame, rx->frame_len); 3505 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s", 3506 rx->freq, rx->datarate, rx->ssi_signal, 3507 hex); 3508 os_free(hex); 3509 } 3510 break; 3511 } 3512 #endif /* CONFIG_TESTING_OPTIONS */ 3513 3514 mgmt = (const struct ieee80211_mgmt *) 3515 data->rx_mgmt.frame; 3516 fc = le_to_host16(mgmt->frame_control); 3517 stype = WLAN_FC_GET_STYPE(fc); 3518 3519 #ifdef CONFIG_AP 3520 if (wpa_s->ap_iface == NULL) { 3521 #endif /* CONFIG_AP */ 3522 #ifdef CONFIG_P2P 3523 if (stype == WLAN_FC_STYPE_PROBE_REQ && 3524 data->rx_mgmt.frame_len > 24) { 3525 const u8 *src = mgmt->sa; 3526 const u8 *ie = mgmt->u.probe_req.variable; 3527 size_t ie_len = data->rx_mgmt.frame_len - 3528 (mgmt->u.probe_req.variable - 3529 data->rx_mgmt.frame); 3530 wpas_p2p_probe_req_rx( 3531 wpa_s, src, mgmt->da, 3532 mgmt->bssid, ie, ie_len, 3533 data->rx_mgmt.freq, 3534 data->rx_mgmt.ssi_signal); 3535 break; 3536 } 3537 #endif /* CONFIG_P2P */ 3538 #ifdef CONFIG_IBSS_RSN 3539 if (wpa_s->current_ssid && 3540 wpa_s->current_ssid->mode == WPAS_MODE_IBSS && 3541 stype == WLAN_FC_STYPE_AUTH && 3542 data->rx_mgmt.frame_len >= 30) { 3543 wpa_supplicant_event_ibss_auth(wpa_s, data); 3544 break; 3545 } 3546 #endif /* CONFIG_IBSS_RSN */ 3547 3548 if (stype == WLAN_FC_STYPE_ACTION) { 3549 wpas_event_rx_mgmt_action( 3550 wpa_s, data->rx_mgmt.frame, 3551 data->rx_mgmt.frame_len, 3552 data->rx_mgmt.freq, 3553 data->rx_mgmt.ssi_signal); 3554 break; 3555 } 3556 3557 if (wpa_s->ifmsh) { 3558 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt); 3559 break; 3560 } 3561 3562 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received " 3563 "management frame in non-AP mode"); 3564 break; 3565 #ifdef CONFIG_AP 3566 } 3567 3568 if (stype == WLAN_FC_STYPE_PROBE_REQ && 3569 data->rx_mgmt.frame_len > 24) { 3570 const u8 *ie = mgmt->u.probe_req.variable; 3571 size_t ie_len = data->rx_mgmt.frame_len - 3572 (mgmt->u.probe_req.variable - 3573 data->rx_mgmt.frame); 3574 3575 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da, 3576 mgmt->bssid, ie, ie_len, 3577 data->rx_mgmt.ssi_signal); 3578 } 3579 3580 ap_mgmt_rx(wpa_s, &data->rx_mgmt); 3581 #endif /* CONFIG_AP */ 3582 break; 3583 } 3584 case EVENT_RX_PROBE_REQ: 3585 if (data->rx_probe_req.sa == NULL || 3586 data->rx_probe_req.ie == NULL) 3587 break; 3588 #ifdef CONFIG_AP 3589 if (wpa_s->ap_iface) { 3590 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0], 3591 data->rx_probe_req.sa, 3592 data->rx_probe_req.da, 3593 data->rx_probe_req.bssid, 3594 data->rx_probe_req.ie, 3595 data->rx_probe_req.ie_len, 3596 data->rx_probe_req.ssi_signal); 3597 break; 3598 } 3599 #endif /* CONFIG_AP */ 3600 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa, 3601 data->rx_probe_req.da, 3602 data->rx_probe_req.bssid, 3603 data->rx_probe_req.ie, 3604 data->rx_probe_req.ie_len, 3605 0, 3606 data->rx_probe_req.ssi_signal); 3607 break; 3608 case EVENT_REMAIN_ON_CHANNEL: 3609 #ifdef CONFIG_OFFCHANNEL 3610 offchannel_remain_on_channel_cb( 3611 wpa_s, data->remain_on_channel.freq, 3612 data->remain_on_channel.duration); 3613 #endif /* CONFIG_OFFCHANNEL */ 3614 wpas_p2p_remain_on_channel_cb( 3615 wpa_s, data->remain_on_channel.freq, 3616 data->remain_on_channel.duration); 3617 break; 3618 case EVENT_CANCEL_REMAIN_ON_CHANNEL: 3619 #ifdef CONFIG_OFFCHANNEL 3620 offchannel_cancel_remain_on_channel_cb( 3621 wpa_s, data->remain_on_channel.freq); 3622 #endif /* CONFIG_OFFCHANNEL */ 3623 wpas_p2p_cancel_remain_on_channel_cb( 3624 wpa_s, data->remain_on_channel.freq); 3625 break; 3626 case EVENT_EAPOL_RX: 3627 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src, 3628 data->eapol_rx.data, 3629 data->eapol_rx.data_len); 3630 break; 3631 case EVENT_SIGNAL_CHANGE: 3632 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE 3633 "above=%d signal=%d noise=%d txrate=%d", 3634 data->signal_change.above_threshold, 3635 data->signal_change.current_signal, 3636 data->signal_change.current_noise, 3637 data->signal_change.current_txrate); 3638 wpa_bss_update_level(wpa_s->current_bss, 3639 data->signal_change.current_signal); 3640 bgscan_notify_signal_change( 3641 wpa_s, data->signal_change.above_threshold, 3642 data->signal_change.current_signal, 3643 data->signal_change.current_noise, 3644 data->signal_change.current_txrate); 3645 break; 3646 case EVENT_INTERFACE_ENABLED: 3647 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled"); 3648 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { 3649 wpa_supplicant_update_mac_addr(wpa_s); 3650 if (wpa_s->p2p_mgmt) { 3651 wpa_supplicant_set_state(wpa_s, 3652 WPA_DISCONNECTED); 3653 break; 3654 } 3655 3656 #ifdef CONFIG_AP 3657 if (!wpa_s->ap_iface) { 3658 wpa_supplicant_set_state(wpa_s, 3659 WPA_DISCONNECTED); 3660 wpa_s->scan_req = NORMAL_SCAN_REQ; 3661 wpa_supplicant_req_scan(wpa_s, 0, 0); 3662 } else 3663 wpa_supplicant_set_state(wpa_s, 3664 WPA_COMPLETED); 3665 #else /* CONFIG_AP */ 3666 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 3667 wpa_supplicant_req_scan(wpa_s, 0, 0); 3668 #endif /* CONFIG_AP */ 3669 } 3670 break; 3671 case EVENT_INTERFACE_DISABLED: 3672 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled"); 3673 #ifdef CONFIG_P2P 3674 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO || 3675 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group && 3676 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) { 3677 /* 3678 * Mark interface disabled if this happens to end up not 3679 * being removed as a separate P2P group interface. 3680 */ 3681 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 3682 /* 3683 * The interface was externally disabled. Remove 3684 * it assuming an external entity will start a 3685 * new session if needed. 3686 */ 3687 if (wpa_s->current_ssid && 3688 wpa_s->current_ssid->p2p_group) 3689 wpas_p2p_interface_unavailable(wpa_s); 3690 else 3691 wpas_p2p_disconnect(wpa_s); 3692 /* 3693 * wpa_s instance may have been freed, so must not use 3694 * it here anymore. 3695 */ 3696 break; 3697 } 3698 if (wpa_s->p2p_scan_work && wpa_s->global->p2p && 3699 p2p_in_progress(wpa_s->global->p2p) > 1) { 3700 /* This radio work will be cancelled, so clear P2P 3701 * state as well. 3702 */ 3703 p2p_stop_find(wpa_s->global->p2p); 3704 } 3705 #endif /* CONFIG_P2P */ 3706 3707 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 3708 /* 3709 * Indicate disconnection to keep ctrl_iface events 3710 * consistent. 3711 */ 3712 wpa_supplicant_event_disassoc( 3713 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1); 3714 } 3715 wpa_supplicant_mark_disassoc(wpa_s); 3716 radio_remove_works(wpa_s, NULL, 0); 3717 3718 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 3719 break; 3720 case EVENT_CHANNEL_LIST_CHANGED: 3721 wpa_supplicant_update_channel_list( 3722 wpa_s, &data->channel_list_changed); 3723 break; 3724 case EVENT_INTERFACE_UNAVAILABLE: 3725 wpas_p2p_interface_unavailable(wpa_s); 3726 break; 3727 case EVENT_BEST_CHANNEL: 3728 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received " 3729 "(%d %d %d)", 3730 data->best_chan.freq_24, data->best_chan.freq_5, 3731 data->best_chan.freq_overall); 3732 wpa_s->best_24_freq = data->best_chan.freq_24; 3733 wpa_s->best_5_freq = data->best_chan.freq_5; 3734 wpa_s->best_overall_freq = data->best_chan.freq_overall; 3735 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24, 3736 data->best_chan.freq_5, 3737 data->best_chan.freq_overall); 3738 break; 3739 case EVENT_UNPROT_DEAUTH: 3740 wpa_supplicant_event_unprot_deauth(wpa_s, 3741 &data->unprot_deauth); 3742 break; 3743 case EVENT_UNPROT_DISASSOC: 3744 wpa_supplicant_event_unprot_disassoc(wpa_s, 3745 &data->unprot_disassoc); 3746 break; 3747 case EVENT_STATION_LOW_ACK: 3748 #ifdef CONFIG_AP 3749 if (wpa_s->ap_iface && data) 3750 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0], 3751 data->low_ack.addr); 3752 #endif /* CONFIG_AP */ 3753 #ifdef CONFIG_TDLS 3754 if (data) 3755 wpa_tdls_disable_unreachable_link(wpa_s->wpa, 3756 data->low_ack.addr); 3757 #endif /* CONFIG_TDLS */ 3758 break; 3759 case EVENT_IBSS_PEER_LOST: 3760 #ifdef CONFIG_IBSS_RSN 3761 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer); 3762 #endif /* CONFIG_IBSS_RSN */ 3763 break; 3764 case EVENT_DRIVER_GTK_REKEY: 3765 if (os_memcmp(data->driver_gtk_rekey.bssid, 3766 wpa_s->bssid, ETH_ALEN)) 3767 break; 3768 if (!wpa_s->wpa) 3769 break; 3770 wpa_sm_update_replay_ctr(wpa_s->wpa, 3771 data->driver_gtk_rekey.replay_ctr); 3772 break; 3773 case EVENT_SCHED_SCAN_STOPPED: 3774 wpa_s->pno = 0; 3775 wpa_s->sched_scanning = 0; 3776 resched = wpa_s->scanning; 3777 wpa_supplicant_notify_scanning(wpa_s, 0); 3778 3779 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 3780 break; 3781 3782 /* 3783 * Start a new sched scan to continue searching for more SSIDs 3784 * either if timed out or PNO schedule scan is pending. 3785 */ 3786 if (wpa_s->sched_scan_timed_out) { 3787 wpa_supplicant_req_sched_scan(wpa_s); 3788 } else if (wpa_s->pno_sched_pending) { 3789 wpa_s->pno_sched_pending = 0; 3790 wpas_start_pno(wpa_s); 3791 } else if (resched) { 3792 wpa_supplicant_req_scan(wpa_s, 0, 0); 3793 } 3794 3795 break; 3796 case EVENT_WPS_BUTTON_PUSHED: 3797 #ifdef CONFIG_WPS 3798 wpas_wps_start_pbc(wpa_s, NULL, 0); 3799 #endif /* CONFIG_WPS */ 3800 break; 3801 case EVENT_AVOID_FREQUENCIES: 3802 wpa_supplicant_notify_avoid_freq(wpa_s, data); 3803 break; 3804 case EVENT_CONNECT_FAILED_REASON: 3805 #ifdef CONFIG_AP 3806 if (!wpa_s->ap_iface || !data) 3807 break; 3808 hostapd_event_connect_failed_reason( 3809 wpa_s->ap_iface->bss[0], 3810 data->connect_failed_reason.addr, 3811 data->connect_failed_reason.code); 3812 #endif /* CONFIG_AP */ 3813 break; 3814 case EVENT_NEW_PEER_CANDIDATE: 3815 #ifdef CONFIG_MESH 3816 if (!wpa_s->ifmsh || !data) 3817 break; 3818 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer, 3819 data->mesh_peer.ies, 3820 data->mesh_peer.ie_len); 3821 #endif /* CONFIG_MESH */ 3822 break; 3823 default: 3824 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event); 3825 break; 3826 } 3827 } 3828