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 wpa_s->wnmsleep_used = 0; 307 } 308 309 310 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s) 311 { 312 struct wpa_ie_data ie; 313 int pmksa_set = -1; 314 size_t i; 315 316 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 || 317 ie.pmkid == NULL) 318 return; 319 320 for (i = 0; i < ie.num_pmkid; i++) { 321 pmksa_set = pmksa_cache_set_current(wpa_s->wpa, 322 ie.pmkid + i * PMKID_LEN, 323 NULL, NULL, 0); 324 if (pmksa_set == 0) { 325 eapol_sm_notify_pmkid_attempt(wpa_s->eapol); 326 break; 327 } 328 } 329 330 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from " 331 "PMKSA cache", pmksa_set == 0 ? "" : "not "); 332 } 333 334 335 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s, 336 union wpa_event_data *data) 337 { 338 if (data == NULL) { 339 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate " 340 "event"); 341 return; 342 } 343 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR 344 " index=%d preauth=%d", 345 MAC2STR(data->pmkid_candidate.bssid), 346 data->pmkid_candidate.index, 347 data->pmkid_candidate.preauth); 348 349 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid, 350 data->pmkid_candidate.index, 351 data->pmkid_candidate.preauth); 352 } 353 354 355 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s) 356 { 357 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 358 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) 359 return 0; 360 361 #ifdef IEEE8021X_EAPOL 362 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA && 363 wpa_s->current_ssid && 364 !(wpa_s->current_ssid->eapol_flags & 365 (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 366 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) { 367 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either 368 * plaintext or static WEP keys). */ 369 return 0; 370 } 371 #endif /* IEEE8021X_EAPOL */ 372 373 return 1; 374 } 375 376 377 /** 378 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC 379 * @wpa_s: pointer to wpa_supplicant data 380 * @ssid: Configuration data for the network 381 * Returns: 0 on success, -1 on failure 382 * 383 * This function is called when starting authentication with a network that is 384 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA). 385 */ 386 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s, 387 struct wpa_ssid *ssid) 388 { 389 #ifdef IEEE8021X_EAPOL 390 #ifdef PCSC_FUNCS 391 int aka = 0, sim = 0; 392 393 if ((ssid != NULL && ssid->eap.pcsc == NULL) || 394 wpa_s->scard != NULL || wpa_s->conf->external_sim) 395 return 0; 396 397 if (ssid == NULL || ssid->eap.eap_methods == NULL) { 398 sim = 1; 399 aka = 1; 400 } else { 401 struct eap_method_type *eap = ssid->eap.eap_methods; 402 while (eap->vendor != EAP_VENDOR_IETF || 403 eap->method != EAP_TYPE_NONE) { 404 if (eap->vendor == EAP_VENDOR_IETF) { 405 if (eap->method == EAP_TYPE_SIM) 406 sim = 1; 407 else if (eap->method == EAP_TYPE_AKA || 408 eap->method == EAP_TYPE_AKA_PRIME) 409 aka = 1; 410 } 411 eap++; 412 } 413 } 414 415 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL) 416 sim = 0; 417 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL && 418 eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) == 419 NULL) 420 aka = 0; 421 422 if (!sim && !aka) { 423 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to " 424 "use SIM, but neither EAP-SIM nor EAP-AKA are " 425 "enabled"); 426 return 0; 427 } 428 429 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM " 430 "(sim=%d aka=%d) - initialize PCSC", sim, aka); 431 432 wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader); 433 if (wpa_s->scard == NULL) { 434 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM " 435 "(pcsc-lite)"); 436 return -1; 437 } 438 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard); 439 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard); 440 #endif /* PCSC_FUNCS */ 441 #endif /* IEEE8021X_EAPOL */ 442 443 return 0; 444 } 445 446 447 #ifndef CONFIG_NO_SCAN_PROCESSING 448 449 static int has_wep_key(struct wpa_ssid *ssid) 450 { 451 int i; 452 453 for (i = 0; i < NUM_WEP_KEYS; i++) { 454 if (ssid->wep_key_len[i]) 455 return 1; 456 } 457 458 return 0; 459 } 460 461 462 static int wpa_supplicant_match_privacy(struct wpa_bss *bss, 463 struct wpa_ssid *ssid) 464 { 465 int privacy = 0; 466 467 if (ssid->mixed_cell) 468 return 1; 469 470 #ifdef CONFIG_WPS 471 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 472 return 1; 473 #endif /* CONFIG_WPS */ 474 475 if (has_wep_key(ssid)) 476 privacy = 1; 477 478 #ifdef IEEE8021X_EAPOL 479 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 480 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 481 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) 482 privacy = 1; 483 #endif /* IEEE8021X_EAPOL */ 484 485 if (wpa_key_mgmt_wpa(ssid->key_mgmt)) 486 privacy = 1; 487 488 if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN) 489 privacy = 1; 490 491 if (bss->caps & IEEE80211_CAP_PRIVACY) 492 return privacy; 493 return !privacy; 494 } 495 496 497 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s, 498 struct wpa_ssid *ssid, 499 struct wpa_bss *bss) 500 { 501 struct wpa_ie_data ie; 502 int proto_match = 0; 503 const u8 *rsn_ie, *wpa_ie; 504 int ret; 505 int wep_ok; 506 507 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss); 508 if (ret >= 0) 509 return ret; 510 511 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */ 512 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) && 513 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) && 514 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) || 515 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)); 516 517 rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 518 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) { 519 proto_match++; 520 521 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) { 522 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse " 523 "failed"); 524 break; 525 } 526 527 if (wep_ok && 528 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104))) 529 { 530 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN " 531 "in RSN IE"); 532 return 1; 533 } 534 535 if (!(ie.proto & ssid->proto)) { 536 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto " 537 "mismatch"); 538 break; 539 } 540 541 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) { 542 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK " 543 "cipher mismatch"); 544 break; 545 } 546 547 if (!(ie.group_cipher & ssid->group_cipher)) { 548 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK " 549 "cipher mismatch"); 550 break; 551 } 552 553 if (!(ie.key_mgmt & ssid->key_mgmt)) { 554 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt " 555 "mismatch"); 556 break; 557 } 558 559 #ifdef CONFIG_IEEE80211W 560 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) && 561 wpas_get_ssid_pmf(wpa_s, ssid) == 562 MGMT_FRAME_PROTECTION_REQUIRED) { 563 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt " 564 "frame protection"); 565 break; 566 } 567 #endif /* CONFIG_IEEE80211W */ 568 569 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE"); 570 return 1; 571 } 572 573 wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 574 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) { 575 proto_match++; 576 577 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) { 578 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse " 579 "failed"); 580 break; 581 } 582 583 if (wep_ok && 584 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104))) 585 { 586 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN " 587 "in WPA IE"); 588 return 1; 589 } 590 591 if (!(ie.proto & ssid->proto)) { 592 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto " 593 "mismatch"); 594 break; 595 } 596 597 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) { 598 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK " 599 "cipher mismatch"); 600 break; 601 } 602 603 if (!(ie.group_cipher & ssid->group_cipher)) { 604 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK " 605 "cipher mismatch"); 606 break; 607 } 608 609 if (!(ie.key_mgmt & ssid->key_mgmt)) { 610 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt " 611 "mismatch"); 612 break; 613 } 614 615 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE"); 616 return 1; 617 } 618 619 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie && 620 !rsn_ie) { 621 wpa_dbg(wpa_s, MSG_DEBUG, " allow for non-WPA IEEE 802.1X"); 622 return 1; 623 } 624 625 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) && 626 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) { 627 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match"); 628 return 0; 629 } 630 631 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && 632 wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) { 633 wpa_dbg(wpa_s, MSG_DEBUG, " allow in OSEN"); 634 return 1; 635 } 636 637 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) { 638 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2"); 639 return 1; 640 } 641 642 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with " 643 "WPA/WPA2"); 644 645 return 0; 646 } 647 648 649 static int freq_allowed(int *freqs, int freq) 650 { 651 int i; 652 653 if (freqs == NULL) 654 return 1; 655 656 for (i = 0; freqs[i]; i++) 657 if (freqs[i] == freq) 658 return 1; 659 return 0; 660 } 661 662 663 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) 664 { 665 const struct hostapd_hw_modes *mode = NULL, *modes; 666 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES }; 667 const u8 *rate_ie; 668 int i, j, k; 669 670 if (bss->freq == 0) 671 return 1; /* Cannot do matching without knowing band */ 672 673 modes = wpa_s->hw.modes; 674 if (modes == NULL) { 675 /* 676 * The driver does not provide any additional information 677 * about the utilized hardware, so allow the connection attempt 678 * to continue. 679 */ 680 return 1; 681 } 682 683 for (i = 0; i < wpa_s->hw.num_modes; i++) { 684 for (j = 0; j < modes[i].num_channels; j++) { 685 int freq = modes[i].channels[j].freq; 686 if (freq == bss->freq) { 687 if (mode && 688 mode->mode == HOSTAPD_MODE_IEEE80211G) 689 break; /* do not allow 802.11b replace 690 * 802.11g */ 691 mode = &modes[i]; 692 break; 693 } 694 } 695 } 696 697 if (mode == NULL) 698 return 0; 699 700 for (i = 0; i < (int) sizeof(scan_ie); i++) { 701 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]); 702 if (rate_ie == NULL) 703 continue; 704 705 for (j = 2; j < rate_ie[1] + 2; j++) { 706 int flagged = !!(rate_ie[j] & 0x80); 707 int r = (rate_ie[j] & 0x7f) * 5; 708 709 /* 710 * IEEE Std 802.11n-2009 7.3.2.2: 711 * The new BSS Membership selector value is encoded 712 * like a legacy basic rate, but it is not a rate and 713 * only indicates if the BSS members are required to 714 * support the mandatory features of Clause 20 [HT PHY] 715 * in order to join the BSS. 716 */ 717 if (flagged && ((rate_ie[j] & 0x7f) == 718 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) { 719 if (!ht_supported(mode)) { 720 wpa_dbg(wpa_s, MSG_DEBUG, 721 " hardware does not support " 722 "HT PHY"); 723 return 0; 724 } 725 continue; 726 } 727 728 /* There's also a VHT selector for 802.11ac */ 729 if (flagged && ((rate_ie[j] & 0x7f) == 730 BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) { 731 if (!vht_supported(mode)) { 732 wpa_dbg(wpa_s, MSG_DEBUG, 733 " hardware does not support " 734 "VHT PHY"); 735 return 0; 736 } 737 continue; 738 } 739 740 if (!flagged) 741 continue; 742 743 /* check for legacy basic rates */ 744 for (k = 0; k < mode->num_rates; k++) { 745 if (mode->rates[k] == r) 746 break; 747 } 748 if (k == mode->num_rates) { 749 /* 750 * IEEE Std 802.11-2007 7.3.2.2 demands that in 751 * order to join a BSS all required rates 752 * have to be supported by the hardware. 753 */ 754 wpa_dbg(wpa_s, MSG_DEBUG, 755 " hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)", 756 r / 10, r % 10, 757 bss->freq, mode->mode, mode->num_rates); 758 return 0; 759 } 760 } 761 } 762 763 return 1; 764 } 765 766 767 /* 768 * Test whether BSS is in an ESS. 769 * This is done differently in DMG (60 GHz) and non-DMG bands 770 */ 771 static int bss_is_ess(struct wpa_bss *bss) 772 { 773 if (bss_is_dmg(bss)) { 774 return (bss->caps & IEEE80211_CAP_DMG_MASK) == 775 IEEE80211_CAP_DMG_AP; 776 } 777 778 return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) == 779 IEEE80211_CAP_ESS); 780 } 781 782 783 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask) 784 { 785 size_t i; 786 787 for (i = 0; i < ETH_ALEN; i++) { 788 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i])) 789 return 0; 790 } 791 return 1; 792 } 793 794 795 static int addr_in_list(const u8 *addr, const u8 *list, size_t num) 796 { 797 size_t i; 798 799 for (i = 0; i < num; i++) { 800 const u8 *a = list + i * ETH_ALEN * 2; 801 const u8 *m = a + ETH_ALEN; 802 803 if (match_mac_mask(a, addr, m)) 804 return 1; 805 } 806 return 0; 807 } 808 809 810 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s, 811 int i, struct wpa_bss *bss, 812 struct wpa_ssid *group, 813 int only_first_ssid) 814 { 815 u8 wpa_ie_len, rsn_ie_len; 816 int wpa; 817 struct wpa_blacklist *e; 818 const u8 *ie; 819 struct wpa_ssid *ssid; 820 int osen; 821 822 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 823 wpa_ie_len = ie ? ie[1] : 0; 824 825 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 826 rsn_ie_len = ie ? ie[1] : 0; 827 828 ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE); 829 osen = ie != NULL; 830 831 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' " 832 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d freq=%d %s%s%s", 833 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len), 834 wpa_ie_len, rsn_ie_len, bss->caps, bss->level, bss->freq, 835 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "", 836 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) || 837 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ? 838 " p2p" : "", 839 osen ? " osen=1" : ""); 840 841 e = wpa_blacklist_get(wpa_s, bss->bssid); 842 if (e) { 843 int limit = 1; 844 if (wpa_supplicant_enabled_networks(wpa_s) == 1) { 845 /* 846 * When only a single network is enabled, we can 847 * trigger blacklisting on the first failure. This 848 * should not be done with multiple enabled networks to 849 * avoid getting forced to move into a worse ESS on 850 * single error if there are no other BSSes of the 851 * current ESS. 852 */ 853 limit = 0; 854 } 855 if (e->count > limit) { 856 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted " 857 "(count=%d limit=%d)", e->count, limit); 858 return NULL; 859 } 860 } 861 862 if (bss->ssid_len == 0) { 863 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known"); 864 return NULL; 865 } 866 867 if (disallowed_bssid(wpa_s, bss->bssid)) { 868 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed"); 869 return NULL; 870 } 871 872 if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) { 873 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed"); 874 return NULL; 875 } 876 877 wpa = wpa_ie_len > 0 || rsn_ie_len > 0; 878 879 for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) { 880 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0); 881 int res; 882 883 if (wpas_network_disabled(wpa_s, ssid)) { 884 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled"); 885 continue; 886 } 887 888 res = wpas_temp_disabled(wpa_s, ssid); 889 if (res > 0) { 890 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled " 891 "temporarily for %d second(s)", res); 892 continue; 893 } 894 895 #ifdef CONFIG_WPS 896 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) { 897 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted " 898 "(WPS)"); 899 continue; 900 } 901 902 if (wpa && ssid->ssid_len == 0 && 903 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss)) 904 check_ssid = 0; 905 906 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 907 /* Only allow wildcard SSID match if an AP 908 * advertises active WPS operation that matches 909 * with our mode. */ 910 check_ssid = 1; 911 if (ssid->ssid_len == 0 && 912 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss)) 913 check_ssid = 0; 914 } 915 #endif /* CONFIG_WPS */ 916 917 if (ssid->bssid_set && ssid->ssid_len == 0 && 918 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0) 919 check_ssid = 0; 920 921 if (check_ssid && 922 (bss->ssid_len != ssid->ssid_len || 923 os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) { 924 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch"); 925 continue; 926 } 927 928 if (ssid->bssid_set && 929 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) { 930 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch"); 931 continue; 932 } 933 934 /* check blacklist */ 935 if (ssid->num_bssid_blacklist && 936 addr_in_list(bss->bssid, ssid->bssid_blacklist, 937 ssid->num_bssid_blacklist)) { 938 wpa_dbg(wpa_s, MSG_DEBUG, 939 " skip - BSSID blacklisted"); 940 continue; 941 } 942 943 /* if there is a whitelist, only accept those APs */ 944 if (ssid->num_bssid_whitelist && 945 !addr_in_list(bss->bssid, ssid->bssid_whitelist, 946 ssid->num_bssid_whitelist)) { 947 wpa_dbg(wpa_s, MSG_DEBUG, 948 " skip - BSSID not in whitelist"); 949 continue; 950 } 951 952 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss)) 953 continue; 954 955 if (!osen && !wpa && 956 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) && 957 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) && 958 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) { 959 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network " 960 "not allowed"); 961 continue; 962 } 963 964 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) && 965 has_wep_key(ssid)) { 966 wpa_dbg(wpa_s, MSG_DEBUG, " skip - ignore WPA/WPA2 AP for WEP network block"); 967 continue; 968 } 969 970 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) { 971 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-OSEN network " 972 "not allowed"); 973 continue; 974 } 975 976 if (!wpa_supplicant_match_privacy(bss, ssid)) { 977 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy " 978 "mismatch"); 979 continue; 980 } 981 982 if (!bss_is_ess(bss)) { 983 wpa_dbg(wpa_s, MSG_DEBUG, " skip - not ESS network"); 984 continue; 985 } 986 987 if (!freq_allowed(ssid->freq_list, bss->freq)) { 988 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not " 989 "allowed"); 990 continue; 991 } 992 993 if (!rate_match(wpa_s, bss)) { 994 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do " 995 "not match"); 996 continue; 997 } 998 999 #ifdef CONFIG_P2P 1000 if (ssid->p2p_group && 1001 !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) && 1002 !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) { 1003 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P IE seen"); 1004 continue; 1005 } 1006 1007 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) { 1008 struct wpabuf *p2p_ie; 1009 u8 dev_addr[ETH_ALEN]; 1010 1011 ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE); 1012 if (ie == NULL) { 1013 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P element"); 1014 continue; 1015 } 1016 p2p_ie = wpa_bss_get_vendor_ie_multi( 1017 bss, P2P_IE_VENDOR_TYPE); 1018 if (p2p_ie == NULL) { 1019 wpa_dbg(wpa_s, MSG_DEBUG, " skip - could not fetch P2P element"); 1020 continue; 1021 } 1022 1023 if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0 1024 || os_memcmp(dev_addr, ssid->go_p2p_dev_addr, 1025 ETH_ALEN) != 0) { 1026 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no matching GO P2P Device Address in P2P element"); 1027 wpabuf_free(p2p_ie); 1028 continue; 1029 } 1030 wpabuf_free(p2p_ie); 1031 } 1032 1033 /* 1034 * TODO: skip the AP if its P2P IE has Group Formation 1035 * bit set in the P2P Group Capability Bitmap and we 1036 * are not in Group Formation with that device. 1037 */ 1038 #endif /* CONFIG_P2P */ 1039 1040 if (os_reltime_before(&bss->last_update, &wpa_s->scan_min_time)) 1041 { 1042 struct os_reltime diff; 1043 1044 os_reltime_sub(&wpa_s->scan_min_time, 1045 &bss->last_update, &diff); 1046 wpa_dbg(wpa_s, MSG_DEBUG, 1047 " skip - scan result not recent enough (%u.%06u seconds too old)", 1048 (unsigned int) diff.sec, 1049 (unsigned int) diff.usec); 1050 continue; 1051 } 1052 1053 /* Matching configuration found */ 1054 return ssid; 1055 } 1056 1057 /* No matching configuration found */ 1058 return NULL; 1059 } 1060 1061 1062 static struct wpa_bss * 1063 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s, 1064 struct wpa_ssid *group, 1065 struct wpa_ssid **selected_ssid, 1066 int only_first_ssid) 1067 { 1068 unsigned int i; 1069 1070 if (only_first_ssid) 1071 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d", 1072 group->id); 1073 else 1074 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d", 1075 group->priority); 1076 1077 for (i = 0; i < wpa_s->last_scan_res_used; i++) { 1078 struct wpa_bss *bss = wpa_s->last_scan_res[i]; 1079 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group, 1080 only_first_ssid); 1081 if (!*selected_ssid) 1082 continue; 1083 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR 1084 " ssid='%s'", 1085 MAC2STR(bss->bssid), 1086 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 1087 return bss; 1088 } 1089 1090 return NULL; 1091 } 1092 1093 1094 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s, 1095 struct wpa_ssid **selected_ssid) 1096 { 1097 struct wpa_bss *selected = NULL; 1098 int prio; 1099 struct wpa_ssid *next_ssid = NULL; 1100 struct wpa_ssid *ssid; 1101 1102 if (wpa_s->last_scan_res == NULL || 1103 wpa_s->last_scan_res_used == 0) 1104 return NULL; /* no scan results from last update */ 1105 1106 if (wpa_s->next_ssid) { 1107 /* check that next_ssid is still valid */ 1108 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1109 if (ssid == wpa_s->next_ssid) 1110 break; 1111 } 1112 next_ssid = ssid; 1113 wpa_s->next_ssid = NULL; 1114 } 1115 1116 while (selected == NULL) { 1117 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) { 1118 if (next_ssid && next_ssid->priority == 1119 wpa_s->conf->pssid[prio]->priority) { 1120 selected = wpa_supplicant_select_bss( 1121 wpa_s, next_ssid, selected_ssid, 1); 1122 if (selected) 1123 break; 1124 } 1125 selected = wpa_supplicant_select_bss( 1126 wpa_s, wpa_s->conf->pssid[prio], 1127 selected_ssid, 0); 1128 if (selected) 1129 break; 1130 } 1131 1132 if (selected == NULL && wpa_s->blacklist && 1133 !wpa_s->countermeasures) { 1134 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear " 1135 "blacklist and try again"); 1136 wpa_blacklist_clear(wpa_s); 1137 wpa_s->blacklist_cleared++; 1138 } else if (selected == NULL) 1139 break; 1140 } 1141 1142 ssid = *selected_ssid; 1143 if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set && 1144 !ssid->passphrase && !ssid->ext_psk) { 1145 const char *field_name, *txt = NULL; 1146 1147 wpa_dbg(wpa_s, MSG_DEBUG, 1148 "PSK/passphrase not yet available for the selected network"); 1149 1150 wpas_notify_network_request(wpa_s, ssid, 1151 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL); 1152 1153 field_name = wpa_supplicant_ctrl_req_to_string( 1154 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt); 1155 if (field_name == NULL) 1156 return NULL; 1157 1158 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt); 1159 1160 selected = NULL; 1161 } 1162 1163 return selected; 1164 } 1165 1166 1167 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s, 1168 int timeout_sec, int timeout_usec) 1169 { 1170 if (!wpa_supplicant_enabled_networks(wpa_s)) { 1171 /* 1172 * No networks are enabled; short-circuit request so 1173 * we don't wait timeout seconds before transitioning 1174 * to INACTIVE state. 1175 */ 1176 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request " 1177 "since there are no enabled networks"); 1178 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); 1179 return; 1180 } 1181 1182 wpa_s->scan_for_connection = 1; 1183 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec); 1184 } 1185 1186 1187 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s, 1188 struct wpa_bss *selected, 1189 struct wpa_ssid *ssid) 1190 { 1191 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) { 1192 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP 1193 "PBC session overlap"); 1194 wpas_notify_wps_event_pbc_overlap(wpa_s); 1195 #ifdef CONFIG_P2P 1196 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 1197 wpa_s->p2p_in_provisioning) { 1198 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb, 1199 wpa_s, NULL); 1200 return -1; 1201 } 1202 #endif /* CONFIG_P2P */ 1203 1204 #ifdef CONFIG_WPS 1205 wpas_wps_pbc_overlap(wpa_s); 1206 wpas_wps_cancel(wpa_s); 1207 #endif /* CONFIG_WPS */ 1208 return -1; 1209 } 1210 1211 wpa_msg(wpa_s, MSG_DEBUG, 1212 "Considering connect request: reassociate: %d selected: " 1213 MACSTR " bssid: " MACSTR " pending: " MACSTR 1214 " wpa_state: %s ssid=%p current_ssid=%p", 1215 wpa_s->reassociate, MAC2STR(selected->bssid), 1216 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid), 1217 wpa_supplicant_state_txt(wpa_s->wpa_state), 1218 ssid, wpa_s->current_ssid); 1219 1220 /* 1221 * Do not trigger new association unless the BSSID has changed or if 1222 * reassociation is requested. If we are in process of associating with 1223 * the selected BSSID, do not trigger new attempt. 1224 */ 1225 if (wpa_s->reassociate || 1226 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 && 1227 ((wpa_s->wpa_state != WPA_ASSOCIATING && 1228 wpa_s->wpa_state != WPA_AUTHENTICATING) || 1229 (!is_zero_ether_addr(wpa_s->pending_bssid) && 1230 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) != 1231 0) || 1232 (is_zero_ether_addr(wpa_s->pending_bssid) && 1233 ssid != wpa_s->current_ssid)))) { 1234 if (wpa_supplicant_scard_init(wpa_s, ssid)) { 1235 wpa_supplicant_req_new_scan(wpa_s, 10, 0); 1236 return 0; 1237 } 1238 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR, 1239 MAC2STR(selected->bssid)); 1240 wpa_supplicant_associate(wpa_s, selected, ssid); 1241 } else { 1242 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to " 1243 "connect with the selected AP"); 1244 } 1245 1246 return 0; 1247 } 1248 1249 1250 static struct wpa_ssid * 1251 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s) 1252 { 1253 int prio; 1254 struct wpa_ssid *ssid; 1255 1256 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) { 1257 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext) 1258 { 1259 if (wpas_network_disabled(wpa_s, ssid)) 1260 continue; 1261 if (ssid->mode == IEEE80211_MODE_IBSS || 1262 ssid->mode == IEEE80211_MODE_AP || 1263 ssid->mode == IEEE80211_MODE_MESH) 1264 return ssid; 1265 } 1266 } 1267 return NULL; 1268 } 1269 1270 1271 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based 1272 * on BSS added and BSS changed events */ 1273 static void wpa_supplicant_rsn_preauth_scan_results( 1274 struct wpa_supplicant *wpa_s) 1275 { 1276 struct wpa_bss *bss; 1277 1278 if (rsn_preauth_scan_results(wpa_s->wpa) < 0) 1279 return; 1280 1281 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1282 const u8 *ssid, *rsn; 1283 1284 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID); 1285 if (ssid == NULL) 1286 continue; 1287 1288 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 1289 if (rsn == NULL) 1290 continue; 1291 1292 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn); 1293 } 1294 1295 } 1296 1297 1298 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s, 1299 struct wpa_bss *selected, 1300 struct wpa_ssid *ssid) 1301 { 1302 struct wpa_bss *current_bss = NULL; 1303 #ifndef CONFIG_NO_ROAMING 1304 int min_diff; 1305 #endif /* CONFIG_NO_ROAMING */ 1306 1307 if (wpa_s->reassociate) 1308 return 1; /* explicit request to reassociate */ 1309 if (wpa_s->wpa_state < WPA_ASSOCIATED) 1310 return 1; /* we are not associated; continue */ 1311 if (wpa_s->current_ssid == NULL) 1312 return 1; /* unknown current SSID */ 1313 if (wpa_s->current_ssid != ssid) 1314 return 1; /* different network block */ 1315 1316 if (wpas_driver_bss_selection(wpa_s)) 1317 return 0; /* Driver-based roaming */ 1318 1319 if (wpa_s->current_ssid->ssid) 1320 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid, 1321 wpa_s->current_ssid->ssid, 1322 wpa_s->current_ssid->ssid_len); 1323 if (!current_bss) 1324 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid); 1325 1326 if (!current_bss) 1327 return 1; /* current BSS not seen in scan results */ 1328 1329 if (current_bss == selected) 1330 return 0; 1331 1332 if (selected->last_update_idx > current_bss->last_update_idx) 1333 return 1; /* current BSS not seen in the last scan */ 1334 1335 #ifndef CONFIG_NO_ROAMING 1336 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation"); 1337 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR 1338 " level=%d snr=%d est_throughput=%u", 1339 MAC2STR(current_bss->bssid), current_bss->level, 1340 current_bss->snr, current_bss->est_throughput); 1341 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR 1342 " level=%d snr=%d est_throughput=%u", 1343 MAC2STR(selected->bssid), selected->level, 1344 selected->snr, selected->est_throughput); 1345 1346 if (wpa_s->current_ssid->bssid_set && 1347 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) == 1348 0) { 1349 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS " 1350 "has preferred BSSID"); 1351 return 1; 1352 } 1353 1354 if (selected->est_throughput > current_bss->est_throughput + 5000) { 1355 wpa_dbg(wpa_s, MSG_DEBUG, 1356 "Allow reassociation - selected BSS has better estimated throughput"); 1357 return 1; 1358 } 1359 1360 if (current_bss->level < 0 && current_bss->level > selected->level) { 1361 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better " 1362 "signal level"); 1363 return 0; 1364 } 1365 1366 min_diff = 2; 1367 if (current_bss->level < 0) { 1368 if (current_bss->level < -85) 1369 min_diff = 1; 1370 else if (current_bss->level < -80) 1371 min_diff = 2; 1372 else if (current_bss->level < -75) 1373 min_diff = 3; 1374 else if (current_bss->level < -70) 1375 min_diff = 4; 1376 else 1377 min_diff = 5; 1378 } 1379 if (abs(current_bss->level - selected->level) < min_diff) { 1380 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference " 1381 "in signal level"); 1382 return 0; 1383 } 1384 1385 return 1; 1386 #else /* CONFIG_NO_ROAMING */ 1387 return 0; 1388 #endif /* CONFIG_NO_ROAMING */ 1389 } 1390 1391 1392 /* Return != 0 if no scan results could be fetched or if scan results should not 1393 * be shared with other virtual interfaces. */ 1394 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s, 1395 union wpa_event_data *data, 1396 int own_request) 1397 { 1398 struct wpa_scan_results *scan_res = NULL; 1399 int ret = 0; 1400 int ap = 0; 1401 #ifndef CONFIG_NO_RANDOM_POOL 1402 size_t i, num; 1403 #endif /* CONFIG_NO_RANDOM_POOL */ 1404 1405 #ifdef CONFIG_AP 1406 if (wpa_s->ap_iface) 1407 ap = 1; 1408 #endif /* CONFIG_AP */ 1409 1410 wpa_supplicant_notify_scanning(wpa_s, 0); 1411 1412 scan_res = wpa_supplicant_get_scan_results(wpa_s, 1413 data ? &data->scan_info : 1414 NULL, 1); 1415 if (scan_res == NULL) { 1416 if (wpa_s->conf->ap_scan == 2 || ap || 1417 wpa_s->scan_res_handler == scan_only_handler) 1418 return -1; 1419 if (!own_request) 1420 return -1; 1421 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try " 1422 "scanning again"); 1423 wpa_supplicant_req_new_scan(wpa_s, 1, 0); 1424 ret = -1; 1425 goto scan_work_done; 1426 } 1427 1428 #ifndef CONFIG_NO_RANDOM_POOL 1429 num = scan_res->num; 1430 if (num > 10) 1431 num = 10; 1432 for (i = 0; i < num; i++) { 1433 u8 buf[5]; 1434 struct wpa_scan_res *res = scan_res->res[i]; 1435 buf[0] = res->bssid[5]; 1436 buf[1] = res->qual & 0xff; 1437 buf[2] = res->noise & 0xff; 1438 buf[3] = res->level & 0xff; 1439 buf[4] = res->tsf & 0xff; 1440 random_add_randomness(buf, sizeof(buf)); 1441 } 1442 #endif /* CONFIG_NO_RANDOM_POOL */ 1443 1444 if (own_request && wpa_s->scan_res_handler && 1445 (wpa_s->own_scan_running || !wpa_s->radio->external_scan_running)) { 1446 void (*scan_res_handler)(struct wpa_supplicant *wpa_s, 1447 struct wpa_scan_results *scan_res); 1448 1449 scan_res_handler = wpa_s->scan_res_handler; 1450 wpa_s->scan_res_handler = NULL; 1451 scan_res_handler(wpa_s, scan_res); 1452 ret = -2; 1453 goto scan_work_done; 1454 } 1455 1456 if (ap) { 1457 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode"); 1458 #ifdef CONFIG_AP 1459 if (wpa_s->ap_iface->scan_cb) 1460 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface); 1461 #endif /* CONFIG_AP */ 1462 goto scan_work_done; 1463 } 1464 1465 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)", 1466 wpa_s->own_scan_running, wpa_s->radio->external_scan_running); 1467 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && 1468 wpa_s->manual_scan_use_id && wpa_s->own_scan_running) { 1469 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u", 1470 wpa_s->manual_scan_id); 1471 wpa_s->manual_scan_use_id = 0; 1472 } else { 1473 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS); 1474 } 1475 wpas_notify_scan_results(wpa_s); 1476 1477 wpas_notify_scan_done(wpa_s, 1); 1478 1479 if (!wpa_s->own_scan_running && wpa_s->radio->external_scan_running) { 1480 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection"); 1481 wpa_scan_results_free(scan_res); 1482 return 0; 1483 } 1484 1485 if (wnm_scan_process(wpa_s, 1) > 0) 1486 goto scan_work_done; 1487 1488 if (sme_proc_obss_scan(wpa_s) > 0) 1489 goto scan_work_done; 1490 1491 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) 1492 goto scan_work_done; 1493 1494 if (autoscan_notify_scan(wpa_s, scan_res)) 1495 goto scan_work_done; 1496 1497 if (wpa_s->disconnected) { 1498 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1499 goto scan_work_done; 1500 } 1501 1502 if (!wpas_driver_bss_selection(wpa_s) && 1503 bgscan_notify_scan(wpa_s, scan_res) == 1) 1504 goto scan_work_done; 1505 1506 wpas_wps_update_ap_info(wpa_s, scan_res); 1507 1508 wpa_scan_results_free(scan_res); 1509 1510 if (wpa_s->scan_work) { 1511 struct wpa_radio_work *work = wpa_s->scan_work; 1512 wpa_s->scan_work = NULL; 1513 radio_work_done(work); 1514 } 1515 1516 return wpas_select_network_from_last_scan(wpa_s, 1, own_request); 1517 1518 scan_work_done: 1519 wpa_scan_results_free(scan_res); 1520 if (wpa_s->scan_work) { 1521 struct wpa_radio_work *work = wpa_s->scan_work; 1522 wpa_s->scan_work = NULL; 1523 radio_work_done(work); 1524 } 1525 return ret; 1526 } 1527 1528 1529 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s, 1530 int new_scan, int own_request) 1531 { 1532 struct wpa_bss *selected; 1533 struct wpa_ssid *ssid = NULL; 1534 int time_to_reenable = wpas_reenabled_network_time(wpa_s); 1535 1536 if (time_to_reenable > 0) { 1537 wpa_dbg(wpa_s, MSG_DEBUG, 1538 "Postpone network selection by %d seconds since all networks are disabled", 1539 time_to_reenable); 1540 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL); 1541 eloop_register_timeout(time_to_reenable, 0, 1542 wpas_network_reenabled, wpa_s, NULL); 1543 return 0; 1544 } 1545 1546 if (wpa_s->p2p_mgmt) 1547 return 0; /* no normal connection on p2p_mgmt interface */ 1548 1549 selected = wpa_supplicant_pick_network(wpa_s, &ssid); 1550 1551 if (selected) { 1552 int skip; 1553 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid); 1554 if (skip) { 1555 if (new_scan) 1556 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 1557 return 0; 1558 } 1559 1560 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) { 1561 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed"); 1562 return -1; 1563 } 1564 if (new_scan) 1565 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 1566 /* 1567 * Do not notify other virtual radios of scan results since we do not 1568 * want them to start other associations at the same time. 1569 */ 1570 return 1; 1571 } else { 1572 #ifdef CONFIG_MESH 1573 if (wpa_s->ifmsh) { 1574 wpa_msg(wpa_s, MSG_INFO, 1575 "Avoiding join because we already joined a mesh group"); 1576 return 0; 1577 } 1578 #endif /* CONFIG_MESH */ 1579 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found"); 1580 ssid = wpa_supplicant_pick_new_network(wpa_s); 1581 if (ssid) { 1582 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network"); 1583 wpa_supplicant_associate(wpa_s, NULL, ssid); 1584 if (new_scan) 1585 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 1586 } else if (own_request) { 1587 /* 1588 * No SSID found. If SCAN results are as a result of 1589 * own scan request and not due to a scan request on 1590 * another shared interface, try another scan. 1591 */ 1592 int timeout_sec = wpa_s->scan_interval; 1593 int timeout_usec = 0; 1594 #ifdef CONFIG_P2P 1595 int res; 1596 1597 res = wpas_p2p_scan_no_go_seen(wpa_s); 1598 if (res == 2) 1599 return 2; 1600 if (res == 1) 1601 return 0; 1602 1603 if (wpa_s->p2p_in_provisioning || 1604 wpa_s->show_group_started || 1605 wpa_s->p2p_in_invitation) { 1606 /* 1607 * Use shorter wait during P2P Provisioning 1608 * state and during P2P join-a-group operation 1609 * to speed up group formation. 1610 */ 1611 timeout_sec = 0; 1612 timeout_usec = 250000; 1613 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1614 timeout_usec); 1615 return 0; 1616 } 1617 #endif /* CONFIG_P2P */ 1618 #ifdef CONFIG_INTERWORKING 1619 if (wpa_s->conf->auto_interworking && 1620 wpa_s->conf->interworking && 1621 wpa_s->conf->cred) { 1622 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: " 1623 "start ANQP fetch since no matching " 1624 "networks found"); 1625 wpa_s->network_select = 1; 1626 wpa_s->auto_network_select = 1; 1627 interworking_start_fetch_anqp(wpa_s); 1628 return 1; 1629 } 1630 #endif /* CONFIG_INTERWORKING */ 1631 #ifdef CONFIG_WPS 1632 if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) { 1633 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing"); 1634 timeout_sec = 0; 1635 timeout_usec = 500000; 1636 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1637 timeout_usec); 1638 return 0; 1639 } 1640 #endif /* CONFIG_WPS */ 1641 if (wpa_supplicant_req_sched_scan(wpa_s)) 1642 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1643 timeout_usec); 1644 1645 wpa_msg_ctrl(wpa_s, MSG_INFO, 1646 WPA_EVENT_NETWORK_NOT_FOUND); 1647 } 1648 } 1649 return 0; 1650 } 1651 1652 1653 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s, 1654 union wpa_event_data *data) 1655 { 1656 struct wpa_supplicant *ifs; 1657 int res; 1658 1659 res = _wpa_supplicant_event_scan_results(wpa_s, data, 1); 1660 if (res == 2) { 1661 /* 1662 * Interface may have been removed, so must not dereference 1663 * wpa_s after this. 1664 */ 1665 return 1; 1666 } 1667 if (res != 0) { 1668 /* 1669 * If no scan results could be fetched, then no need to 1670 * notify those interfaces that did not actually request 1671 * this scan. Similarly, if scan results started a new operation on this 1672 * interface, do not notify other interfaces to avoid concurrent 1673 * operations during a connection attempt. 1674 */ 1675 return 0; 1676 } 1677 1678 /* 1679 * Check other interfaces to see if they share the same radio. If 1680 * so, they get updated with this same scan info. 1681 */ 1682 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 1683 radio_list) { 1684 if (ifs != wpa_s) { 1685 wpa_printf(MSG_DEBUG, "%s: Updating scan results from " 1686 "sibling", ifs->ifname); 1687 _wpa_supplicant_event_scan_results(ifs, data, 0); 1688 } 1689 } 1690 1691 return 0; 1692 } 1693 1694 #endif /* CONFIG_NO_SCAN_PROCESSING */ 1695 1696 1697 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s) 1698 { 1699 #ifdef CONFIG_NO_SCAN_PROCESSING 1700 return -1; 1701 #else /* CONFIG_NO_SCAN_PROCESSING */ 1702 struct os_reltime now; 1703 1704 if (wpa_s->last_scan_res_used == 0) 1705 return -1; 1706 1707 os_get_reltime(&now); 1708 if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) { 1709 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results"); 1710 return -1; 1711 } 1712 1713 return wpas_select_network_from_last_scan(wpa_s, 0, 1); 1714 #endif /* CONFIG_NO_SCAN_PROCESSING */ 1715 } 1716 1717 #ifdef CONFIG_WNM 1718 1719 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx) 1720 { 1721 struct wpa_supplicant *wpa_s = eloop_ctx; 1722 1723 if (wpa_s->wpa_state < WPA_ASSOCIATED) 1724 return; 1725 1726 if (!wpa_s->no_keep_alive) { 1727 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR, 1728 MAC2STR(wpa_s->bssid)); 1729 /* TODO: could skip this if normal data traffic has been sent */ 1730 /* TODO: Consider using some more appropriate data frame for 1731 * this */ 1732 if (wpa_s->l2) 1733 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800, 1734 (u8 *) "", 0); 1735 } 1736 1737 #ifdef CONFIG_SME 1738 if (wpa_s->sme.bss_max_idle_period) { 1739 unsigned int msec; 1740 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */ 1741 if (msec > 100) 1742 msec -= 100; 1743 eloop_register_timeout(msec / 1000, msec % 1000 * 1000, 1744 wnm_bss_keep_alive, wpa_s, NULL); 1745 } 1746 #endif /* CONFIG_SME */ 1747 } 1748 1749 1750 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s, 1751 const u8 *ies, size_t ies_len) 1752 { 1753 struct ieee802_11_elems elems; 1754 1755 if (ies == NULL) 1756 return; 1757 1758 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) 1759 return; 1760 1761 #ifdef CONFIG_SME 1762 if (elems.bss_max_idle_period) { 1763 unsigned int msec; 1764 wpa_s->sme.bss_max_idle_period = 1765 WPA_GET_LE16(elems.bss_max_idle_period); 1766 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 " 1767 "TU)%s", wpa_s->sme.bss_max_idle_period, 1768 (elems.bss_max_idle_period[2] & 0x01) ? 1769 " (protected keep-live required)" : ""); 1770 if (wpa_s->sme.bss_max_idle_period == 0) 1771 wpa_s->sme.bss_max_idle_period = 1; 1772 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) { 1773 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL); 1774 /* msec times 1000 */ 1775 msec = wpa_s->sme.bss_max_idle_period * 1024; 1776 if (msec > 100) 1777 msec -= 100; 1778 eloop_register_timeout(msec / 1000, msec % 1000 * 1000, 1779 wnm_bss_keep_alive, wpa_s, 1780 NULL); 1781 } 1782 } 1783 #endif /* CONFIG_SME */ 1784 } 1785 1786 #endif /* CONFIG_WNM */ 1787 1788 1789 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s) 1790 { 1791 #ifdef CONFIG_WNM 1792 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL); 1793 #endif /* CONFIG_WNM */ 1794 } 1795 1796 1797 #ifdef CONFIG_INTERWORKING 1798 1799 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map, 1800 size_t len) 1801 { 1802 int res; 1803 1804 wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len); 1805 res = wpa_drv_set_qos_map(wpa_s, qos_map, len); 1806 if (res) { 1807 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver"); 1808 } 1809 1810 return res; 1811 } 1812 1813 1814 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s, 1815 const u8 *ies, size_t ies_len) 1816 { 1817 struct ieee802_11_elems elems; 1818 1819 if (ies == NULL) 1820 return; 1821 1822 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) 1823 return; 1824 1825 if (elems.qos_map_set) { 1826 wpas_qos_map_set(wpa_s, elems.qos_map_set, 1827 elems.qos_map_set_len); 1828 } 1829 } 1830 1831 #endif /* CONFIG_INTERWORKING */ 1832 1833 1834 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s, 1835 union wpa_event_data *data) 1836 { 1837 int l, len, found = 0, wpa_found, rsn_found; 1838 const u8 *p; 1839 #ifdef CONFIG_IEEE80211R 1840 u8 bssid[ETH_ALEN]; 1841 #endif /* CONFIG_IEEE80211R */ 1842 1843 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event"); 1844 if (data->assoc_info.req_ies) 1845 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies, 1846 data->assoc_info.req_ies_len); 1847 if (data->assoc_info.resp_ies) { 1848 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies, 1849 data->assoc_info.resp_ies_len); 1850 #ifdef CONFIG_TDLS 1851 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies, 1852 data->assoc_info.resp_ies_len); 1853 #endif /* CONFIG_TDLS */ 1854 #ifdef CONFIG_WNM 1855 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies, 1856 data->assoc_info.resp_ies_len); 1857 #endif /* CONFIG_WNM */ 1858 #ifdef CONFIG_INTERWORKING 1859 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies, 1860 data->assoc_info.resp_ies_len); 1861 #endif /* CONFIG_INTERWORKING */ 1862 } 1863 if (data->assoc_info.beacon_ies) 1864 wpa_hexdump(MSG_DEBUG, "beacon_ies", 1865 data->assoc_info.beacon_ies, 1866 data->assoc_info.beacon_ies_len); 1867 if (data->assoc_info.freq) 1868 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz", 1869 data->assoc_info.freq); 1870 1871 p = data->assoc_info.req_ies; 1872 l = data->assoc_info.req_ies_len; 1873 1874 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */ 1875 while (p && l >= 2) { 1876 len = p[1] + 2; 1877 if (len > l) { 1878 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info", 1879 p, l); 1880 break; 1881 } 1882 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 && 1883 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) || 1884 (p[0] == WLAN_EID_RSN && p[1] >= 2)) { 1885 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len)) 1886 break; 1887 found = 1; 1888 wpa_find_assoc_pmkid(wpa_s); 1889 break; 1890 } 1891 l -= len; 1892 p += len; 1893 } 1894 if (!found && data->assoc_info.req_ies) 1895 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 1896 1897 #ifdef CONFIG_IEEE80211R 1898 #ifdef CONFIG_SME 1899 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) { 1900 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 || 1901 wpa_ft_validate_reassoc_resp(wpa_s->wpa, 1902 data->assoc_info.resp_ies, 1903 data->assoc_info.resp_ies_len, 1904 bssid) < 0) { 1905 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of " 1906 "Reassociation Response failed"); 1907 wpa_supplicant_deauthenticate( 1908 wpa_s, WLAN_REASON_INVALID_IE); 1909 return -1; 1910 } 1911 } 1912 1913 p = data->assoc_info.resp_ies; 1914 l = data->assoc_info.resp_ies_len; 1915 1916 #ifdef CONFIG_WPS_STRICT 1917 if (p && wpa_s->current_ssid && 1918 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) { 1919 struct wpabuf *wps; 1920 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE); 1921 if (wps == NULL) { 1922 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not " 1923 "include WPS IE in (Re)Association Response"); 1924 return -1; 1925 } 1926 1927 if (wps_validate_assoc_resp(wps) < 0) { 1928 wpabuf_free(wps); 1929 wpa_supplicant_deauthenticate( 1930 wpa_s, WLAN_REASON_INVALID_IE); 1931 return -1; 1932 } 1933 wpabuf_free(wps); 1934 } 1935 #endif /* CONFIG_WPS_STRICT */ 1936 1937 /* Go through the IEs and make a copy of the MDIE, if present. */ 1938 while (p && l >= 2) { 1939 len = p[1] + 2; 1940 if (len > l) { 1941 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info", 1942 p, l); 1943 break; 1944 } 1945 if (p[0] == WLAN_EID_MOBILITY_DOMAIN && 1946 p[1] >= MOBILITY_DOMAIN_ID_LEN) { 1947 wpa_s->sme.ft_used = 1; 1948 os_memcpy(wpa_s->sme.mobility_domain, p + 2, 1949 MOBILITY_DOMAIN_ID_LEN); 1950 break; 1951 } 1952 l -= len; 1953 p += len; 1954 } 1955 #endif /* CONFIG_SME */ 1956 1957 /* Process FT when SME is in the driver */ 1958 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) && 1959 wpa_ft_is_completed(wpa_s->wpa)) { 1960 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 || 1961 wpa_ft_validate_reassoc_resp(wpa_s->wpa, 1962 data->assoc_info.resp_ies, 1963 data->assoc_info.resp_ies_len, 1964 bssid) < 0) { 1965 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of " 1966 "Reassociation Response failed"); 1967 wpa_supplicant_deauthenticate( 1968 wpa_s, WLAN_REASON_INVALID_IE); 1969 return -1; 1970 } 1971 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done"); 1972 } 1973 1974 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies, 1975 data->assoc_info.resp_ies_len); 1976 #endif /* CONFIG_IEEE80211R */ 1977 1978 /* WPA/RSN IE from Beacon/ProbeResp */ 1979 p = data->assoc_info.beacon_ies; 1980 l = data->assoc_info.beacon_ies_len; 1981 1982 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present. 1983 */ 1984 wpa_found = rsn_found = 0; 1985 while (p && l >= 2) { 1986 len = p[1] + 2; 1987 if (len > l) { 1988 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies", 1989 p, l); 1990 break; 1991 } 1992 if (!wpa_found && 1993 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 && 1994 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) { 1995 wpa_found = 1; 1996 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len); 1997 } 1998 1999 if (!rsn_found && 2000 p[0] == WLAN_EID_RSN && p[1] >= 2) { 2001 rsn_found = 1; 2002 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len); 2003 } 2004 2005 l -= len; 2006 p += len; 2007 } 2008 2009 if (!wpa_found && data->assoc_info.beacon_ies) 2010 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0); 2011 if (!rsn_found && data->assoc_info.beacon_ies) 2012 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0); 2013 if (wpa_found || rsn_found) 2014 wpa_s->ap_ies_from_associnfo = 1; 2015 2016 #ifdef CONFIG_FST 2017 wpabuf_free(wpa_s->received_mb_ies); 2018 wpa_s->received_mb_ies = NULL; 2019 if (wpa_s->fst) { 2020 struct mb_ies_info mb_ies; 2021 2022 wpa_printf(MSG_DEBUG, "Looking for MB IE"); 2023 if (!mb_ies_info_by_ies(&mb_ies, data->assoc_info.resp_ies, 2024 data->assoc_info.resp_ies_len)) 2025 wpa_s->received_mb_ies = mb_ies_by_info(&mb_ies); 2026 } 2027 #endif /* CONFIG_FST */ 2028 2029 if (wpa_s->assoc_freq && data->assoc_info.freq && 2030 wpa_s->assoc_freq != data->assoc_info.freq) { 2031 wpa_printf(MSG_DEBUG, "Operating frequency changed from " 2032 "%u to %u MHz", 2033 wpa_s->assoc_freq, data->assoc_info.freq); 2034 wpa_supplicant_update_scan_results(wpa_s); 2035 } 2036 2037 wpa_s->assoc_freq = data->assoc_info.freq; 2038 2039 return 0; 2040 } 2041 2042 2043 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s) 2044 { 2045 const u8 *bss_wpa = NULL, *bss_rsn = NULL; 2046 2047 if (!wpa_s->current_bss || !wpa_s->current_ssid) 2048 return -1; 2049 2050 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt)) 2051 return 0; 2052 2053 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss, 2054 WPA_IE_VENDOR_TYPE); 2055 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN); 2056 2057 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa, 2058 bss_wpa ? 2 + bss_wpa[1] : 0) || 2059 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn, 2060 bss_rsn ? 2 + bss_rsn[1] : 0)) 2061 return -1; 2062 2063 return 0; 2064 } 2065 2066 2067 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s, 2068 union wpa_event_data *data) 2069 { 2070 u8 bssid[ETH_ALEN]; 2071 int ft_completed; 2072 int new_bss = 0; 2073 2074 #ifdef CONFIG_AP 2075 if (wpa_s->ap_iface) { 2076 if (!data) 2077 return; 2078 hostapd_notif_assoc(wpa_s->ap_iface->bss[0], 2079 data->assoc_info.addr, 2080 data->assoc_info.req_ies, 2081 data->assoc_info.req_ies_len, 2082 data->assoc_info.reassoc); 2083 return; 2084 } 2085 #endif /* CONFIG_AP */ 2086 2087 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL); 2088 2089 ft_completed = wpa_ft_is_completed(wpa_s->wpa); 2090 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0) 2091 return; 2092 2093 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) { 2094 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID"); 2095 wpa_supplicant_deauthenticate( 2096 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2097 return; 2098 } 2099 2100 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED); 2101 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) { 2102 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID=" 2103 MACSTR, MAC2STR(bssid)); 2104 new_bss = 1; 2105 random_add_randomness(bssid, ETH_ALEN); 2106 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN); 2107 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 2108 wpas_notify_bssid_changed(wpa_s); 2109 2110 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) { 2111 wpa_clear_keys(wpa_s, bssid); 2112 } 2113 if (wpa_supplicant_select_config(wpa_s) < 0) { 2114 wpa_supplicant_deauthenticate( 2115 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2116 return; 2117 } 2118 } 2119 2120 if (wpa_s->conf->ap_scan == 1 && 2121 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) { 2122 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0 && new_bss) 2123 wpa_msg(wpa_s, MSG_WARNING, 2124 "WPA/RSN IEs not updated"); 2125 } 2126 2127 #ifdef CONFIG_SME 2128 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN); 2129 wpa_s->sme.prev_bssid_set = 1; 2130 wpa_s->sme.last_unprot_disconnect.sec = 0; 2131 #endif /* CONFIG_SME */ 2132 2133 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid)); 2134 if (wpa_s->current_ssid) { 2135 /* When using scanning (ap_scan=1), SIM PC/SC interface can be 2136 * initialized before association, but for other modes, 2137 * initialize PC/SC here, if the current configuration needs 2138 * smartcard or SIM/USIM. */ 2139 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid); 2140 } 2141 wpa_sm_notify_assoc(wpa_s->wpa, bssid); 2142 if (wpa_s->l2) 2143 l2_packet_notify_auth_start(wpa_s->l2); 2144 2145 /* 2146 * Set portEnabled first to FALSE in order to get EAP state machine out 2147 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE 2148 * state machine may transit to AUTHENTICATING state based on obsolete 2149 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to 2150 * AUTHENTICATED without ever giving chance to EAP state machine to 2151 * reset the state. 2152 */ 2153 if (!ft_completed) { 2154 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 2155 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 2156 } 2157 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed) 2158 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 2159 /* 802.1X::portControl = Auto */ 2160 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE); 2161 wpa_s->eapol_received = 0; 2162 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 2163 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE || 2164 (wpa_s->current_ssid && 2165 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) { 2166 if (wpa_s->current_ssid && 2167 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE && 2168 (wpa_s->drv_flags & 2169 WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) { 2170 /* 2171 * Set the key after having received joined-IBSS event 2172 * from the driver. 2173 */ 2174 wpa_supplicant_set_wpa_none_key(wpa_s, 2175 wpa_s->current_ssid); 2176 } 2177 wpa_supplicant_cancel_auth_timeout(wpa_s); 2178 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2179 } else if (!ft_completed) { 2180 /* Timeout for receiving the first EAPOL packet */ 2181 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0); 2182 } 2183 wpa_supplicant_cancel_scan(wpa_s); 2184 2185 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 2186 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { 2187 /* 2188 * We are done; the driver will take care of RSN 4-way 2189 * handshake. 2190 */ 2191 wpa_supplicant_cancel_auth_timeout(wpa_s); 2192 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2193 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2194 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 2195 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 2196 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) { 2197 /* 2198 * The driver will take care of RSN 4-way handshake, so we need 2199 * to allow EAPOL supplicant to complete its work without 2200 * waiting for WPA supplicant. 2201 */ 2202 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2203 } else if (ft_completed) { 2204 /* 2205 * FT protocol completed - make sure EAPOL state machine ends 2206 * up in authenticated. 2207 */ 2208 wpa_supplicant_cancel_auth_timeout(wpa_s); 2209 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2210 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2211 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 2212 } 2213 2214 wpa_s->last_eapol_matches_bssid = 0; 2215 2216 if (wpa_s->pending_eapol_rx) { 2217 struct os_reltime now, age; 2218 os_get_reltime(&now); 2219 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age); 2220 if (age.sec == 0 && age.usec < 100000 && 2221 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) == 2222 0) { 2223 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL " 2224 "frame that was received just before " 2225 "association notification"); 2226 wpa_supplicant_rx_eapol( 2227 wpa_s, wpa_s->pending_eapol_rx_src, 2228 wpabuf_head(wpa_s->pending_eapol_rx), 2229 wpabuf_len(wpa_s->pending_eapol_rx)); 2230 } 2231 wpabuf_free(wpa_s->pending_eapol_rx); 2232 wpa_s->pending_eapol_rx = NULL; 2233 } 2234 2235 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 2236 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 2237 wpa_s->current_ssid && 2238 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) { 2239 /* Set static WEP keys again */ 2240 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid); 2241 } 2242 2243 #ifdef CONFIG_IBSS_RSN 2244 if (wpa_s->current_ssid && 2245 wpa_s->current_ssid->mode == WPAS_MODE_IBSS && 2246 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 2247 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE && 2248 wpa_s->ibss_rsn == NULL) { 2249 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s); 2250 if (!wpa_s->ibss_rsn) { 2251 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN"); 2252 wpa_supplicant_deauthenticate( 2253 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2254 return; 2255 } 2256 2257 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk); 2258 } 2259 #endif /* CONFIG_IBSS_RSN */ 2260 2261 wpas_wps_notify_assoc(wpa_s, bssid); 2262 2263 if (data) { 2264 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies, 2265 data->assoc_info.resp_ies_len, 2266 &data->assoc_info.wmm_params); 2267 2268 if (wpa_s->reassoc_same_bss) 2269 wmm_ac_restore_tspecs(wpa_s); 2270 } 2271 } 2272 2273 2274 static int disconnect_reason_recoverable(u16 reason_code) 2275 { 2276 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY || 2277 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA || 2278 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA; 2279 } 2280 2281 2282 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s, 2283 u16 reason_code, 2284 int locally_generated) 2285 { 2286 const u8 *bssid; 2287 2288 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 2289 /* 2290 * At least Host AP driver and a Prism3 card seemed to be 2291 * generating streams of disconnected events when configuring 2292 * IBSS for WPA-None. Ignore them for now. 2293 */ 2294 return; 2295 } 2296 2297 bssid = wpa_s->bssid; 2298 if (is_zero_ether_addr(bssid)) 2299 bssid = wpa_s->pending_bssid; 2300 2301 if (!is_zero_ether_addr(bssid) || 2302 wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2303 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR 2304 " reason=%d%s", 2305 MAC2STR(bssid), reason_code, 2306 locally_generated ? " locally_generated=1" : ""); 2307 } 2308 } 2309 2310 2311 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code, 2312 int locally_generated) 2313 { 2314 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE || 2315 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) 2316 return 0; /* Not in 4-way handshake with PSK */ 2317 2318 /* 2319 * It looks like connection was lost while trying to go through PSK 2320 * 4-way handshake. Filter out known disconnection cases that are caused 2321 * by something else than PSK mismatch to avoid confusing reports. 2322 */ 2323 2324 if (locally_generated) { 2325 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS) 2326 return 0; 2327 } 2328 2329 return 1; 2330 } 2331 2332 2333 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s, 2334 u16 reason_code, 2335 int locally_generated) 2336 { 2337 const u8 *bssid; 2338 int authenticating; 2339 u8 prev_pending_bssid[ETH_ALEN]; 2340 struct wpa_bss *fast_reconnect = NULL; 2341 struct wpa_ssid *fast_reconnect_ssid = NULL; 2342 struct wpa_ssid *last_ssid; 2343 2344 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING; 2345 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN); 2346 2347 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 2348 /* 2349 * At least Host AP driver and a Prism3 card seemed to be 2350 * generating streams of disconnected events when configuring 2351 * IBSS for WPA-None. Ignore them for now. 2352 */ 2353 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in " 2354 "IBSS/WPA-None mode"); 2355 return; 2356 } 2357 2358 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) { 2359 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - " 2360 "pre-shared key may be incorrect"); 2361 if (wpas_p2p_4way_hs_failed(wpa_s) > 0) 2362 return; /* P2P group removed */ 2363 wpas_auth_failed(wpa_s, "WRONG_KEY"); 2364 } 2365 if (!wpa_s->disconnected && 2366 (!wpa_s->auto_reconnect_disabled || 2367 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS || 2368 wpas_wps_searching(wpa_s))) { 2369 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to " 2370 "reconnect (wps=%d/%d wpa_state=%d)", 2371 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS, 2372 wpas_wps_searching(wpa_s), 2373 wpa_s->wpa_state); 2374 if (wpa_s->wpa_state == WPA_COMPLETED && 2375 wpa_s->current_ssid && 2376 wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 2377 !locally_generated && 2378 disconnect_reason_recoverable(reason_code)) { 2379 /* 2380 * It looks like the AP has dropped association with 2381 * us, but could allow us to get back in. Try to 2382 * reconnect to the same BSS without full scan to save 2383 * time for some common cases. 2384 */ 2385 fast_reconnect = wpa_s->current_bss; 2386 fast_reconnect_ssid = wpa_s->current_ssid; 2387 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING) 2388 wpa_supplicant_req_scan(wpa_s, 0, 100000); 2389 else 2390 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new " 2391 "immediate scan"); 2392 } else { 2393 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not " 2394 "try to re-connect"); 2395 wpa_s->reassociate = 0; 2396 wpa_s->disconnected = 1; 2397 if (!wpa_s->pno) 2398 wpa_supplicant_cancel_sched_scan(wpa_s); 2399 } 2400 bssid = wpa_s->bssid; 2401 if (is_zero_ether_addr(bssid)) 2402 bssid = wpa_s->pending_bssid; 2403 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 2404 wpas_connection_failed(wpa_s, bssid); 2405 wpa_sm_notify_disassoc(wpa_s->wpa); 2406 if (locally_generated) 2407 wpa_s->disconnect_reason = -reason_code; 2408 else 2409 wpa_s->disconnect_reason = reason_code; 2410 wpas_notify_disconnect_reason(wpa_s); 2411 if (wpa_supplicant_dynamic_keys(wpa_s)) { 2412 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys"); 2413 wpa_clear_keys(wpa_s, wpa_s->bssid); 2414 } 2415 last_ssid = wpa_s->current_ssid; 2416 wpa_supplicant_mark_disassoc(wpa_s); 2417 2418 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) { 2419 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid); 2420 wpa_s->current_ssid = last_ssid; 2421 } 2422 2423 if (fast_reconnect && 2424 !wpas_network_disabled(wpa_s, fast_reconnect_ssid) && 2425 !disallowed_bssid(wpa_s, fast_reconnect->bssid) && 2426 !disallowed_ssid(wpa_s, fast_reconnect->ssid, 2427 fast_reconnect->ssid_len) && 2428 !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) { 2429 #ifndef CONFIG_NO_SCAN_PROCESSING 2430 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS"); 2431 if (wpa_supplicant_connect(wpa_s, fast_reconnect, 2432 fast_reconnect_ssid) < 0) { 2433 /* Recover through full scan */ 2434 wpa_supplicant_req_scan(wpa_s, 0, 100000); 2435 } 2436 #endif /* CONFIG_NO_SCAN_PROCESSING */ 2437 } else if (fast_reconnect) { 2438 /* 2439 * Could not reconnect to the same BSS due to network being 2440 * disabled. Use a new scan to match the alternative behavior 2441 * above, i.e., to continue automatic reconnection attempt in a 2442 * way that enforces disabled network rules. 2443 */ 2444 wpa_supplicant_req_scan(wpa_s, 0, 100000); 2445 } 2446 } 2447 2448 2449 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 2450 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx) 2451 { 2452 struct wpa_supplicant *wpa_s = eloop_ctx; 2453 2454 if (!wpa_s->pending_mic_error_report) 2455 return; 2456 2457 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report"); 2458 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise); 2459 wpa_s->pending_mic_error_report = 0; 2460 } 2461 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 2462 2463 2464 static void 2465 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s, 2466 union wpa_event_data *data) 2467 { 2468 int pairwise; 2469 struct os_reltime t; 2470 2471 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected"); 2472 pairwise = (data && data->michael_mic_failure.unicast); 2473 os_get_reltime(&t); 2474 if ((wpa_s->last_michael_mic_error.sec && 2475 !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) || 2476 wpa_s->pending_mic_error_report) { 2477 if (wpa_s->pending_mic_error_report) { 2478 /* 2479 * Send the pending MIC error report immediately since 2480 * we are going to start countermeasures and AP better 2481 * do the same. 2482 */ 2483 wpa_sm_key_request(wpa_s->wpa, 1, 2484 wpa_s->pending_mic_error_pairwise); 2485 } 2486 2487 /* Send the new MIC error report immediately since we are going 2488 * to start countermeasures and AP better do the same. 2489 */ 2490 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 2491 2492 /* initialize countermeasures */ 2493 wpa_s->countermeasures = 1; 2494 2495 wpa_blacklist_add(wpa_s, wpa_s->bssid); 2496 2497 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started"); 2498 2499 /* 2500 * Need to wait for completion of request frame. We do not get 2501 * any callback for the message completion, so just wait a 2502 * short while and hope for the best. */ 2503 os_sleep(0, 10000); 2504 2505 wpa_drv_set_countermeasures(wpa_s, 1); 2506 wpa_supplicant_deauthenticate(wpa_s, 2507 WLAN_REASON_MICHAEL_MIC_FAILURE); 2508 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, 2509 wpa_s, NULL); 2510 eloop_register_timeout(60, 0, 2511 wpa_supplicant_stop_countermeasures, 2512 wpa_s, NULL); 2513 /* TODO: mark the AP rejected for 60 second. STA is 2514 * allowed to associate with another AP.. */ 2515 } else { 2516 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 2517 if (wpa_s->mic_errors_seen) { 2518 /* 2519 * Reduce the effectiveness of Michael MIC error 2520 * reports as a means for attacking against TKIP if 2521 * more than one MIC failure is noticed with the same 2522 * PTK. We delay the transmission of the reports by a 2523 * random time between 0 and 60 seconds in order to 2524 * force the attacker wait 60 seconds before getting 2525 * the information on whether a frame resulted in a MIC 2526 * failure. 2527 */ 2528 u8 rval[4]; 2529 int sec; 2530 2531 if (os_get_random(rval, sizeof(rval)) < 0) 2532 sec = os_random() % 60; 2533 else 2534 sec = WPA_GET_BE32(rval) % 60; 2535 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error " 2536 "report %d seconds", sec); 2537 wpa_s->pending_mic_error_report = 1; 2538 wpa_s->pending_mic_error_pairwise = pairwise; 2539 eloop_cancel_timeout( 2540 wpa_supplicant_delayed_mic_error_report, 2541 wpa_s, NULL); 2542 eloop_register_timeout( 2543 sec, os_random() % 1000000, 2544 wpa_supplicant_delayed_mic_error_report, 2545 wpa_s, NULL); 2546 } else { 2547 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 2548 } 2549 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 2550 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 2551 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 2552 } 2553 wpa_s->last_michael_mic_error = t; 2554 wpa_s->mic_errors_seen++; 2555 } 2556 2557 2558 #ifdef CONFIG_TERMINATE_ONLASTIF 2559 static int any_interfaces(struct wpa_supplicant *head) 2560 { 2561 struct wpa_supplicant *wpa_s; 2562 2563 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next) 2564 if (!wpa_s->interface_removed) 2565 return 1; 2566 return 0; 2567 } 2568 #endif /* CONFIG_TERMINATE_ONLASTIF */ 2569 2570 2571 static void 2572 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s, 2573 union wpa_event_data *data) 2574 { 2575 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0) 2576 return; 2577 2578 switch (data->interface_status.ievent) { 2579 case EVENT_INTERFACE_ADDED: 2580 if (!wpa_s->interface_removed) 2581 break; 2582 wpa_s->interface_removed = 0; 2583 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added"); 2584 if (wpa_supplicant_driver_init(wpa_s) < 0) { 2585 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the " 2586 "driver after interface was added"); 2587 } 2588 2589 #ifdef CONFIG_P2P 2590 if (!wpa_s->global->p2p && 2591 !wpa_s->global->p2p_disabled && 2592 !wpa_s->conf->p2p_disabled && 2593 (wpa_s->drv_flags & 2594 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) && 2595 wpas_p2p_add_p2pdev_interface( 2596 wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) { 2597 wpa_printf(MSG_INFO, 2598 "P2P: Failed to enable P2P Device interface"); 2599 /* Try to continue without. P2P will be disabled. */ 2600 } 2601 #endif /* CONFIG_P2P */ 2602 2603 break; 2604 case EVENT_INTERFACE_REMOVED: 2605 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed"); 2606 wpa_s->interface_removed = 1; 2607 wpa_supplicant_mark_disassoc(wpa_s); 2608 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 2609 l2_packet_deinit(wpa_s->l2); 2610 wpa_s->l2 = NULL; 2611 2612 #ifdef CONFIG_P2P 2613 if (wpa_s->global->p2p && 2614 wpa_s->global->p2p_init_wpa_s->parent == wpa_s && 2615 (wpa_s->drv_flags & 2616 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) { 2617 wpa_dbg(wpa_s, MSG_DEBUG, 2618 "Removing P2P Device interface"); 2619 wpa_supplicant_remove_iface( 2620 wpa_s->global, wpa_s->global->p2p_init_wpa_s, 2621 0); 2622 wpa_s->global->p2p_init_wpa_s = NULL; 2623 } 2624 #endif /* CONFIG_P2P */ 2625 2626 #ifdef CONFIG_TERMINATE_ONLASTIF 2627 /* check if last interface */ 2628 if (!any_interfaces(wpa_s->global->ifaces)) 2629 eloop_terminate(); 2630 #endif /* CONFIG_TERMINATE_ONLASTIF */ 2631 break; 2632 } 2633 } 2634 2635 2636 #ifdef CONFIG_PEERKEY 2637 static void 2638 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s, 2639 union wpa_event_data *data) 2640 { 2641 if (data == NULL) 2642 return; 2643 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer); 2644 } 2645 #endif /* CONFIG_PEERKEY */ 2646 2647 2648 #ifdef CONFIG_TDLS 2649 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s, 2650 union wpa_event_data *data) 2651 { 2652 if (data == NULL) 2653 return; 2654 switch (data->tdls.oper) { 2655 case TDLS_REQUEST_SETUP: 2656 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer); 2657 if (wpa_tdls_is_external_setup(wpa_s->wpa)) 2658 wpa_tdls_start(wpa_s->wpa, data->tdls.peer); 2659 else 2660 wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer); 2661 break; 2662 case TDLS_REQUEST_TEARDOWN: 2663 if (wpa_tdls_is_external_setup(wpa_s->wpa)) 2664 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer, 2665 data->tdls.reason_code); 2666 else 2667 wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN, 2668 data->tdls.peer); 2669 break; 2670 case TDLS_REQUEST_DISCOVER: 2671 wpa_tdls_send_discovery_request(wpa_s->wpa, 2672 data->tdls.peer); 2673 break; 2674 } 2675 } 2676 #endif /* CONFIG_TDLS */ 2677 2678 2679 #ifdef CONFIG_WNM 2680 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s, 2681 union wpa_event_data *data) 2682 { 2683 if (data == NULL) 2684 return; 2685 switch (data->wnm.oper) { 2686 case WNM_OPER_SLEEP: 2687 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request " 2688 "(action=%d, intval=%d)", 2689 data->wnm.sleep_action, data->wnm.sleep_intval); 2690 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action, 2691 data->wnm.sleep_intval, NULL); 2692 break; 2693 } 2694 } 2695 #endif /* CONFIG_WNM */ 2696 2697 2698 #ifdef CONFIG_IEEE80211R 2699 static void 2700 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s, 2701 union wpa_event_data *data) 2702 { 2703 if (data == NULL) 2704 return; 2705 2706 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies, 2707 data->ft_ies.ies_len, 2708 data->ft_ies.ft_action, 2709 data->ft_ies.target_ap, 2710 data->ft_ies.ric_ies, 2711 data->ft_ies.ric_ies_len) < 0) { 2712 /* TODO: prevent MLME/driver from trying to associate? */ 2713 } 2714 } 2715 #endif /* CONFIG_IEEE80211R */ 2716 2717 2718 #ifdef CONFIG_IBSS_RSN 2719 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s, 2720 union wpa_event_data *data) 2721 { 2722 struct wpa_ssid *ssid; 2723 if (wpa_s->wpa_state < WPA_ASSOCIATED) 2724 return; 2725 if (data == NULL) 2726 return; 2727 ssid = wpa_s->current_ssid; 2728 if (ssid == NULL) 2729 return; 2730 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt)) 2731 return; 2732 2733 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer); 2734 } 2735 2736 2737 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s, 2738 union wpa_event_data *data) 2739 { 2740 struct wpa_ssid *ssid = wpa_s->current_ssid; 2741 2742 if (ssid == NULL) 2743 return; 2744 2745 /* check if the ssid is correctly configured as IBSS/RSN */ 2746 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt)) 2747 return; 2748 2749 ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame, 2750 data->rx_mgmt.frame_len); 2751 } 2752 #endif /* CONFIG_IBSS_RSN */ 2753 2754 2755 #ifdef CONFIG_IEEE80211R 2756 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data, 2757 size_t len) 2758 { 2759 const u8 *sta_addr, *target_ap_addr; 2760 u16 status; 2761 2762 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len); 2763 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) 2764 return; /* only SME case supported for now */ 2765 if (len < 1 + 2 * ETH_ALEN + 2) 2766 return; 2767 if (data[0] != 2) 2768 return; /* Only FT Action Response is supported for now */ 2769 sta_addr = data + 1; 2770 target_ap_addr = data + 1 + ETH_ALEN; 2771 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN); 2772 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA " 2773 MACSTR " TargetAP " MACSTR " status %u", 2774 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status); 2775 2776 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) { 2777 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR 2778 " in FT Action Response", MAC2STR(sta_addr)); 2779 return; 2780 } 2781 2782 if (status) { 2783 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates " 2784 "failure (status code %d)", status); 2785 /* TODO: report error to FT code(?) */ 2786 return; 2787 } 2788 2789 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2, 2790 len - (1 + 2 * ETH_ALEN + 2), 1, 2791 target_ap_addr, NULL, 0) < 0) 2792 return; 2793 2794 #ifdef CONFIG_SME 2795 { 2796 struct wpa_bss *bss; 2797 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr); 2798 if (bss) 2799 wpa_s->sme.freq = bss->freq; 2800 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT; 2801 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr, 2802 WLAN_AUTH_FT); 2803 } 2804 #endif /* CONFIG_SME */ 2805 } 2806 #endif /* CONFIG_IEEE80211R */ 2807 2808 2809 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s, 2810 struct unprot_deauth *e) 2811 { 2812 #ifdef CONFIG_IEEE80211W 2813 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame " 2814 "dropped: " MACSTR " -> " MACSTR 2815 " (reason code %u)", 2816 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code); 2817 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code); 2818 #endif /* CONFIG_IEEE80211W */ 2819 } 2820 2821 2822 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s, 2823 struct unprot_disassoc *e) 2824 { 2825 #ifdef CONFIG_IEEE80211W 2826 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame " 2827 "dropped: " MACSTR " -> " MACSTR 2828 " (reason code %u)", 2829 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code); 2830 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code); 2831 #endif /* CONFIG_IEEE80211W */ 2832 } 2833 2834 2835 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr, 2836 u16 reason_code, int locally_generated, 2837 const u8 *ie, size_t ie_len, int deauth) 2838 { 2839 #ifdef CONFIG_AP 2840 if (wpa_s->ap_iface && addr) { 2841 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr); 2842 return; 2843 } 2844 2845 if (wpa_s->ap_iface) { 2846 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode"); 2847 return; 2848 } 2849 #endif /* CONFIG_AP */ 2850 2851 if (!locally_generated) 2852 wpa_s->own_disconnect_req = 0; 2853 2854 wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated); 2855 2856 if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED || 2857 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) || 2858 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) && 2859 eapol_sm_failed(wpa_s->eapol))) && 2860 !wpa_s->eap_expected_failure)) 2861 wpas_auth_failed(wpa_s, "AUTH_FAILED"); 2862 2863 #ifdef CONFIG_P2P 2864 if (deauth && reason_code > 0) { 2865 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len, 2866 locally_generated) > 0) { 2867 /* 2868 * The interface was removed, so cannot continue 2869 * processing any additional operations after this. 2870 */ 2871 return; 2872 } 2873 } 2874 #endif /* CONFIG_P2P */ 2875 2876 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code, 2877 locally_generated); 2878 } 2879 2880 2881 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s, 2882 struct disassoc_info *info) 2883 { 2884 u16 reason_code = 0; 2885 int locally_generated = 0; 2886 const u8 *addr = NULL; 2887 const u8 *ie = NULL; 2888 size_t ie_len = 0; 2889 2890 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification"); 2891 2892 if (info) { 2893 addr = info->addr; 2894 ie = info->ie; 2895 ie_len = info->ie_len; 2896 reason_code = info->reason_code; 2897 locally_generated = info->locally_generated; 2898 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code, 2899 locally_generated ? " (locally generated)" : ""); 2900 if (addr) 2901 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR, 2902 MAC2STR(addr)); 2903 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)", 2904 ie, ie_len); 2905 } 2906 2907 #ifdef CONFIG_AP 2908 if (wpa_s->ap_iface && info && info->addr) { 2909 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr); 2910 return; 2911 } 2912 2913 if (wpa_s->ap_iface) { 2914 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode"); 2915 return; 2916 } 2917 #endif /* CONFIG_AP */ 2918 2919 #ifdef CONFIG_P2P 2920 if (info) { 2921 wpas_p2p_disassoc_notif( 2922 wpa_s, info->addr, reason_code, info->ie, info->ie_len, 2923 locally_generated); 2924 } 2925 #endif /* CONFIG_P2P */ 2926 2927 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 2928 sme_event_disassoc(wpa_s, info); 2929 2930 wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated, 2931 ie, ie_len, 0); 2932 } 2933 2934 2935 static void wpas_event_deauth(struct wpa_supplicant *wpa_s, 2936 struct deauth_info *info) 2937 { 2938 u16 reason_code = 0; 2939 int locally_generated = 0; 2940 const u8 *addr = NULL; 2941 const u8 *ie = NULL; 2942 size_t ie_len = 0; 2943 2944 wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification"); 2945 2946 if (info) { 2947 addr = info->addr; 2948 ie = info->ie; 2949 ie_len = info->ie_len; 2950 reason_code = info->reason_code; 2951 locally_generated = info->locally_generated; 2952 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", 2953 reason_code, 2954 locally_generated ? " (locally generated)" : ""); 2955 if (addr) { 2956 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR, 2957 MAC2STR(addr)); 2958 } 2959 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)", 2960 ie, ie_len); 2961 } 2962 2963 wpa_reset_ft_completed(wpa_s->wpa); 2964 2965 wpas_event_disconnect(wpa_s, addr, reason_code, 2966 locally_generated, ie, ie_len, 1); 2967 } 2968 2969 2970 static const char * reg_init_str(enum reg_change_initiator init) 2971 { 2972 switch (init) { 2973 case REGDOM_SET_BY_CORE: 2974 return "CORE"; 2975 case REGDOM_SET_BY_USER: 2976 return "USER"; 2977 case REGDOM_SET_BY_DRIVER: 2978 return "DRIVER"; 2979 case REGDOM_SET_BY_COUNTRY_IE: 2980 return "COUNTRY_IE"; 2981 case REGDOM_BEACON_HINT: 2982 return "BEACON_HINT"; 2983 } 2984 return "?"; 2985 } 2986 2987 2988 static const char * reg_type_str(enum reg_type type) 2989 { 2990 switch (type) { 2991 case REGDOM_TYPE_UNKNOWN: 2992 return "UNKNOWN"; 2993 case REGDOM_TYPE_COUNTRY: 2994 return "COUNTRY"; 2995 case REGDOM_TYPE_WORLD: 2996 return "WORLD"; 2997 case REGDOM_TYPE_CUSTOM_WORLD: 2998 return "CUSTOM_WORLD"; 2999 case REGDOM_TYPE_INTERSECTION: 3000 return "INTERSECTION"; 3001 } 3002 return "?"; 3003 } 3004 3005 3006 static void wpa_supplicant_update_channel_list( 3007 struct wpa_supplicant *wpa_s, struct channel_list_changed *info) 3008 { 3009 struct wpa_supplicant *ifs; 3010 3011 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s", 3012 reg_init_str(info->initiator), reg_type_str(info->type), 3013 info->alpha2[0] ? " alpha2=" : "", 3014 info->alpha2[0] ? info->alpha2 : ""); 3015 3016 if (wpa_s->drv_priv == NULL) 3017 return; /* Ignore event during drv initialization */ 3018 3019 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 3020 radio_list) { 3021 wpa_printf(MSG_DEBUG, "%s: Updating hw mode", 3022 ifs->ifname); 3023 free_hw_features(ifs); 3024 ifs->hw.modes = wpa_drv_get_hw_feature_data( 3025 ifs, &ifs->hw.num_modes, &ifs->hw.flags); 3026 } 3027 3028 /* Restart sched_scan with updated channel list */ 3029 if (wpa_s->sched_scanning) { 3030 wpa_dbg(wpa_s, MSG_DEBUG, 3031 "Channel list changed restart sched scan."); 3032 wpa_supplicant_cancel_sched_scan(wpa_s); 3033 wpa_supplicant_req_scan(wpa_s, 0, 0); 3034 } 3035 3036 wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_DRIVER); 3037 } 3038 3039 3040 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s, 3041 const u8 *frame, size_t len, int freq, 3042 int rssi) 3043 { 3044 const struct ieee80211_mgmt *mgmt; 3045 const u8 *payload; 3046 size_t plen; 3047 u8 category; 3048 3049 if (len < IEEE80211_HDRLEN + 2) 3050 return; 3051 3052 mgmt = (const struct ieee80211_mgmt *) frame; 3053 payload = frame + IEEE80211_HDRLEN; 3054 category = *payload++; 3055 plen = len - IEEE80211_HDRLEN - 1; 3056 3057 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR 3058 " Category=%u DataLen=%d freq=%d MHz", 3059 MAC2STR(mgmt->sa), category, (int) plen, freq); 3060 3061 if (category == WLAN_ACTION_WMM) { 3062 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen); 3063 return; 3064 } 3065 3066 #ifdef CONFIG_IEEE80211R 3067 if (category == WLAN_ACTION_FT) { 3068 ft_rx_action(wpa_s, payload, plen); 3069 return; 3070 } 3071 #endif /* CONFIG_IEEE80211R */ 3072 3073 #ifdef CONFIG_IEEE80211W 3074 #ifdef CONFIG_SME 3075 if (category == WLAN_ACTION_SA_QUERY) { 3076 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen); 3077 return; 3078 } 3079 #endif /* CONFIG_SME */ 3080 #endif /* CONFIG_IEEE80211W */ 3081 3082 #ifdef CONFIG_WNM 3083 if (mgmt->u.action.category == WLAN_ACTION_WNM) { 3084 ieee802_11_rx_wnm_action(wpa_s, mgmt, len); 3085 return; 3086 } 3087 #endif /* CONFIG_WNM */ 3088 3089 #ifdef CONFIG_GAS 3090 if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC || 3091 mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) && 3092 gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid, 3093 mgmt->u.action.category, 3094 payload, plen, freq) == 0) 3095 return; 3096 #endif /* CONFIG_GAS */ 3097 3098 #ifdef CONFIG_TDLS 3099 if (category == WLAN_ACTION_PUBLIC && plen >= 4 && 3100 payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) { 3101 wpa_dbg(wpa_s, MSG_DEBUG, 3102 "TDLS: Received Discovery Response from " MACSTR, 3103 MAC2STR(mgmt->sa)); 3104 return; 3105 } 3106 #endif /* CONFIG_TDLS */ 3107 3108 #ifdef CONFIG_INTERWORKING 3109 if (category == WLAN_ACTION_QOS && plen >= 1 && 3110 payload[0] == QOS_QOS_MAP_CONFIG) { 3111 const u8 *pos = payload + 1; 3112 size_t qlen = plen - 1; 3113 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from " 3114 MACSTR, MAC2STR(mgmt->sa)); 3115 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 && 3116 qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET && 3117 pos[1] <= qlen - 2 && pos[1] >= 16) 3118 wpas_qos_map_set(wpa_s, pos + 2, pos[1]); 3119 return; 3120 } 3121 #endif /* CONFIG_INTERWORKING */ 3122 3123 if (category == WLAN_ACTION_RADIO_MEASUREMENT && 3124 payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) { 3125 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1); 3126 return; 3127 } 3128 3129 if (category == WLAN_ACTION_RADIO_MEASUREMENT && 3130 payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) { 3131 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa, 3132 payload + 1, plen - 1, 3133 rssi); 3134 return; 3135 } 3136 3137 #ifdef CONFIG_FST 3138 if (mgmt->u.action.category == WLAN_ACTION_FST && wpa_s->fst) { 3139 fst_rx_action(wpa_s->fst, mgmt, len); 3140 return; 3141 } 3142 #endif /* CONFIG_FST */ 3143 3144 wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid, 3145 category, payload, plen, freq); 3146 if (wpa_s->ifmsh) 3147 mesh_mpm_action_rx(wpa_s, mgmt, len); 3148 } 3149 3150 3151 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s, 3152 union wpa_event_data *event) 3153 { 3154 struct wpa_freq_range_list *list; 3155 char *str = NULL; 3156 3157 list = &event->freq_range; 3158 3159 if (list->num) 3160 str = freq_range_list_str(list); 3161 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s", 3162 str ? str : ""); 3163 3164 #ifdef CONFIG_P2P 3165 if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) { 3166 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range", 3167 __func__); 3168 } else { 3169 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event"); 3170 3171 /* 3172 * The update channel flow will also take care of moving a GO 3173 * from the unsafe frequency if needed. 3174 */ 3175 wpas_p2p_update_channel_list(wpa_s, 3176 WPAS_P2P_CHANNEL_UPDATE_AVOID); 3177 } 3178 #endif /* CONFIG_P2P */ 3179 3180 os_free(str); 3181 } 3182 3183 3184 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s, 3185 union wpa_event_data *data) 3186 { 3187 wpa_dbg(wpa_s, MSG_DEBUG, 3188 "Connection authorized by device, previous state %d", 3189 wpa_s->wpa_state); 3190 if (wpa_s->wpa_state == WPA_ASSOCIATED) { 3191 wpa_supplicant_cancel_auth_timeout(wpa_s); 3192 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 3193 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 3194 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 3195 } 3196 wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr); 3197 wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck, 3198 data->assoc_info.ptk_kck_len, 3199 data->assoc_info.ptk_kek, 3200 data->assoc_info.ptk_kek_len); 3201 } 3202 3203 3204 void wpa_supplicant_event(void *ctx, enum wpa_event_type event, 3205 union wpa_event_data *data) 3206 { 3207 struct wpa_supplicant *wpa_s = ctx; 3208 int resched; 3209 3210 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED && 3211 event != EVENT_INTERFACE_ENABLED && 3212 event != EVENT_INTERFACE_STATUS && 3213 event != EVENT_SCHED_SCAN_STOPPED) { 3214 wpa_dbg(wpa_s, MSG_DEBUG, 3215 "Ignore event %s (%d) while interface is disabled", 3216 event_to_string(event), event); 3217 return; 3218 } 3219 3220 #ifndef CONFIG_NO_STDOUT_DEBUG 3221 { 3222 int level = MSG_DEBUG; 3223 3224 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) { 3225 const struct ieee80211_hdr *hdr; 3226 u16 fc; 3227 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame; 3228 fc = le_to_host16(hdr->frame_control); 3229 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 3230 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON) 3231 level = MSG_EXCESSIVE; 3232 } 3233 3234 wpa_dbg(wpa_s, level, "Event %s (%d) received", 3235 event_to_string(event), event); 3236 } 3237 #endif /* CONFIG_NO_STDOUT_DEBUG */ 3238 3239 switch (event) { 3240 case EVENT_AUTH: 3241 sme_event_auth(wpa_s, data); 3242 break; 3243 case EVENT_ASSOC: 3244 wpa_supplicant_event_assoc(wpa_s, data); 3245 if (data && data->assoc_info.authorized) 3246 wpa_supplicant_event_assoc_auth(wpa_s, data); 3247 break; 3248 case EVENT_DISASSOC: 3249 wpas_event_disassoc(wpa_s, 3250 data ? &data->disassoc_info : NULL); 3251 break; 3252 case EVENT_DEAUTH: 3253 wpas_event_deauth(wpa_s, 3254 data ? &data->deauth_info : NULL); 3255 break; 3256 case EVENT_MICHAEL_MIC_FAILURE: 3257 wpa_supplicant_event_michael_mic_failure(wpa_s, data); 3258 break; 3259 #ifndef CONFIG_NO_SCAN_PROCESSING 3260 case EVENT_SCAN_STARTED: 3261 os_get_reltime(&wpa_s->scan_start_time); 3262 if (wpa_s->own_scan_requested) { 3263 struct os_reltime diff; 3264 3265 os_reltime_sub(&wpa_s->scan_start_time, 3266 &wpa_s->scan_trigger_time, &diff); 3267 wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds", 3268 diff.sec, diff.usec); 3269 wpa_s->own_scan_requested = 0; 3270 wpa_s->own_scan_running = 1; 3271 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && 3272 wpa_s->manual_scan_use_id) { 3273 wpa_msg_ctrl(wpa_s, MSG_INFO, 3274 WPA_EVENT_SCAN_STARTED "id=%u", 3275 wpa_s->manual_scan_id); 3276 } else { 3277 wpa_msg_ctrl(wpa_s, MSG_INFO, 3278 WPA_EVENT_SCAN_STARTED); 3279 } 3280 } else { 3281 wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan"); 3282 wpa_s->radio->external_scan_running = 1; 3283 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED); 3284 } 3285 break; 3286 case EVENT_SCAN_RESULTS: 3287 if (os_reltime_initialized(&wpa_s->scan_start_time)) { 3288 struct os_reltime now, diff; 3289 os_get_reltime(&now); 3290 os_reltime_sub(&now, &wpa_s->scan_start_time, &diff); 3291 wpa_s->scan_start_time.sec = 0; 3292 wpa_s->scan_start_time.usec = 0; 3293 wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds", 3294 diff.sec, diff.usec); 3295 } 3296 if (wpa_supplicant_event_scan_results(wpa_s, data)) 3297 break; /* interface may have been removed */ 3298 wpa_s->own_scan_running = 0; 3299 wpa_s->radio->external_scan_running = 0; 3300 radio_work_check_next(wpa_s); 3301 break; 3302 #endif /* CONFIG_NO_SCAN_PROCESSING */ 3303 case EVENT_ASSOCINFO: 3304 wpa_supplicant_event_associnfo(wpa_s, data); 3305 break; 3306 case EVENT_INTERFACE_STATUS: 3307 wpa_supplicant_event_interface_status(wpa_s, data); 3308 break; 3309 case EVENT_PMKID_CANDIDATE: 3310 wpa_supplicant_event_pmkid_candidate(wpa_s, data); 3311 break; 3312 #ifdef CONFIG_PEERKEY 3313 case EVENT_STKSTART: 3314 wpa_supplicant_event_stkstart(wpa_s, data); 3315 break; 3316 #endif /* CONFIG_PEERKEY */ 3317 #ifdef CONFIG_TDLS 3318 case EVENT_TDLS: 3319 wpa_supplicant_event_tdls(wpa_s, data); 3320 break; 3321 #endif /* CONFIG_TDLS */ 3322 #ifdef CONFIG_WNM 3323 case EVENT_WNM: 3324 wpa_supplicant_event_wnm(wpa_s, data); 3325 break; 3326 #endif /* CONFIG_WNM */ 3327 #ifdef CONFIG_IEEE80211R 3328 case EVENT_FT_RESPONSE: 3329 wpa_supplicant_event_ft_response(wpa_s, data); 3330 break; 3331 #endif /* CONFIG_IEEE80211R */ 3332 #ifdef CONFIG_IBSS_RSN 3333 case EVENT_IBSS_RSN_START: 3334 wpa_supplicant_event_ibss_rsn_start(wpa_s, data); 3335 break; 3336 #endif /* CONFIG_IBSS_RSN */ 3337 case EVENT_ASSOC_REJECT: 3338 if (data->assoc_reject.bssid) 3339 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT 3340 "bssid=" MACSTR " status_code=%u", 3341 MAC2STR(data->assoc_reject.bssid), 3342 data->assoc_reject.status_code); 3343 else 3344 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT 3345 "status_code=%u", 3346 data->assoc_reject.status_code); 3347 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 3348 sme_event_assoc_reject(wpa_s, data); 3349 else { 3350 const u8 *bssid = data->assoc_reject.bssid; 3351 if (bssid == NULL || is_zero_ether_addr(bssid)) 3352 bssid = wpa_s->pending_bssid; 3353 wpas_connection_failed(wpa_s, bssid); 3354 wpa_supplicant_mark_disassoc(wpa_s); 3355 } 3356 break; 3357 case EVENT_AUTH_TIMED_OUT: 3358 /* It is possible to get this event from earlier connection */ 3359 if (wpa_s->current_ssid && 3360 wpa_s->current_ssid->mode == WPAS_MODE_MESH) { 3361 wpa_dbg(wpa_s, MSG_DEBUG, 3362 "Ignore AUTH_TIMED_OUT in mesh configuration"); 3363 break; 3364 } 3365 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 3366 sme_event_auth_timed_out(wpa_s, data); 3367 break; 3368 case EVENT_ASSOC_TIMED_OUT: 3369 /* It is possible to get this event from earlier connection */ 3370 if (wpa_s->current_ssid && 3371 wpa_s->current_ssid->mode == WPAS_MODE_MESH) { 3372 wpa_dbg(wpa_s, MSG_DEBUG, 3373 "Ignore ASSOC_TIMED_OUT in mesh configuration"); 3374 break; 3375 } 3376 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 3377 sme_event_assoc_timed_out(wpa_s, data); 3378 break; 3379 case EVENT_TX_STATUS: 3380 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR 3381 " type=%d stype=%d", 3382 MAC2STR(data->tx_status.dst), 3383 data->tx_status.type, data->tx_status.stype); 3384 #ifdef CONFIG_AP 3385 if (wpa_s->ap_iface == NULL) { 3386 #ifdef CONFIG_OFFCHANNEL 3387 if (data->tx_status.type == WLAN_FC_TYPE_MGMT && 3388 data->tx_status.stype == WLAN_FC_STYPE_ACTION) 3389 offchannel_send_action_tx_status( 3390 wpa_s, data->tx_status.dst, 3391 data->tx_status.data, 3392 data->tx_status.data_len, 3393 data->tx_status.ack ? 3394 OFFCHANNEL_SEND_ACTION_SUCCESS : 3395 OFFCHANNEL_SEND_ACTION_NO_ACK); 3396 #endif /* CONFIG_OFFCHANNEL */ 3397 break; 3398 } 3399 #endif /* CONFIG_AP */ 3400 #ifdef CONFIG_OFFCHANNEL 3401 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst=" 3402 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst)); 3403 /* 3404 * Catch TX status events for Action frames we sent via group 3405 * interface in GO mode. 3406 */ 3407 if (data->tx_status.type == WLAN_FC_TYPE_MGMT && 3408 data->tx_status.stype == WLAN_FC_STYPE_ACTION && 3409 os_memcmp(wpa_s->parent->pending_action_dst, 3410 data->tx_status.dst, ETH_ALEN) == 0) { 3411 offchannel_send_action_tx_status( 3412 wpa_s->parent, data->tx_status.dst, 3413 data->tx_status.data, 3414 data->tx_status.data_len, 3415 data->tx_status.ack ? 3416 OFFCHANNEL_SEND_ACTION_SUCCESS : 3417 OFFCHANNEL_SEND_ACTION_NO_ACK); 3418 break; 3419 } 3420 #endif /* CONFIG_OFFCHANNEL */ 3421 #ifdef CONFIG_AP 3422 switch (data->tx_status.type) { 3423 case WLAN_FC_TYPE_MGMT: 3424 ap_mgmt_tx_cb(wpa_s, data->tx_status.data, 3425 data->tx_status.data_len, 3426 data->tx_status.stype, 3427 data->tx_status.ack); 3428 break; 3429 case WLAN_FC_TYPE_DATA: 3430 ap_tx_status(wpa_s, data->tx_status.dst, 3431 data->tx_status.data, 3432 data->tx_status.data_len, 3433 data->tx_status.ack); 3434 break; 3435 } 3436 #endif /* CONFIG_AP */ 3437 break; 3438 #ifdef CONFIG_AP 3439 case EVENT_EAPOL_TX_STATUS: 3440 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst, 3441 data->eapol_tx_status.data, 3442 data->eapol_tx_status.data_len, 3443 data->eapol_tx_status.ack); 3444 break; 3445 case EVENT_DRIVER_CLIENT_POLL_OK: 3446 ap_client_poll_ok(wpa_s, data->client_poll.addr); 3447 break; 3448 case EVENT_RX_FROM_UNKNOWN: 3449 if (wpa_s->ap_iface == NULL) 3450 break; 3451 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr, 3452 data->rx_from_unknown.wds); 3453 break; 3454 case EVENT_CH_SWITCH: 3455 if (!data) 3456 break; 3457 if (!wpa_s->ap_iface) { 3458 wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch " 3459 "event in non-AP mode"); 3460 break; 3461 } 3462 3463 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq, 3464 data->ch_switch.ht_enabled, 3465 data->ch_switch.ch_offset, 3466 data->ch_switch.ch_width, 3467 data->ch_switch.cf1, 3468 data->ch_switch.cf2); 3469 break; 3470 #ifdef NEED_AP_MLME 3471 case EVENT_DFS_RADAR_DETECTED: 3472 if (data) 3473 wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event); 3474 break; 3475 case EVENT_DFS_CAC_STARTED: 3476 if (data) 3477 wpas_event_dfs_cac_started(wpa_s, &data->dfs_event); 3478 break; 3479 case EVENT_DFS_CAC_FINISHED: 3480 if (data) 3481 wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event); 3482 break; 3483 case EVENT_DFS_CAC_ABORTED: 3484 if (data) 3485 wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event); 3486 break; 3487 case EVENT_DFS_NOP_FINISHED: 3488 if (data) 3489 wpas_event_dfs_cac_nop_finished(wpa_s, 3490 &data->dfs_event); 3491 break; 3492 #endif /* NEED_AP_MLME */ 3493 #endif /* CONFIG_AP */ 3494 case EVENT_RX_MGMT: { 3495 u16 fc, stype; 3496 const struct ieee80211_mgmt *mgmt; 3497 3498 #ifdef CONFIG_TESTING_OPTIONS 3499 if (wpa_s->ext_mgmt_frame_handling) { 3500 struct rx_mgmt *rx = &data->rx_mgmt; 3501 size_t hex_len = 2 * rx->frame_len + 1; 3502 char *hex = os_malloc(hex_len); 3503 if (hex) { 3504 wpa_snprintf_hex(hex, hex_len, 3505 rx->frame, rx->frame_len); 3506 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s", 3507 rx->freq, rx->datarate, rx->ssi_signal, 3508 hex); 3509 os_free(hex); 3510 } 3511 break; 3512 } 3513 #endif /* CONFIG_TESTING_OPTIONS */ 3514 3515 mgmt = (const struct ieee80211_mgmt *) 3516 data->rx_mgmt.frame; 3517 fc = le_to_host16(mgmt->frame_control); 3518 stype = WLAN_FC_GET_STYPE(fc); 3519 3520 #ifdef CONFIG_AP 3521 if (wpa_s->ap_iface == NULL) { 3522 #endif /* CONFIG_AP */ 3523 #ifdef CONFIG_P2P 3524 if (stype == WLAN_FC_STYPE_PROBE_REQ && 3525 data->rx_mgmt.frame_len > 24) { 3526 const u8 *src = mgmt->sa; 3527 const u8 *ie = mgmt->u.probe_req.variable; 3528 size_t ie_len = data->rx_mgmt.frame_len - 3529 (mgmt->u.probe_req.variable - 3530 data->rx_mgmt.frame); 3531 wpas_p2p_probe_req_rx( 3532 wpa_s, src, mgmt->da, 3533 mgmt->bssid, ie, ie_len, 3534 data->rx_mgmt.freq, 3535 data->rx_mgmt.ssi_signal); 3536 break; 3537 } 3538 #endif /* CONFIG_P2P */ 3539 #ifdef CONFIG_IBSS_RSN 3540 if (wpa_s->current_ssid && 3541 wpa_s->current_ssid->mode == WPAS_MODE_IBSS && 3542 stype == WLAN_FC_STYPE_AUTH && 3543 data->rx_mgmt.frame_len >= 30) { 3544 wpa_supplicant_event_ibss_auth(wpa_s, data); 3545 break; 3546 } 3547 #endif /* CONFIG_IBSS_RSN */ 3548 3549 if (stype == WLAN_FC_STYPE_ACTION) { 3550 wpas_event_rx_mgmt_action( 3551 wpa_s, data->rx_mgmt.frame, 3552 data->rx_mgmt.frame_len, 3553 data->rx_mgmt.freq, 3554 data->rx_mgmt.ssi_signal); 3555 break; 3556 } 3557 3558 if (wpa_s->ifmsh) { 3559 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt); 3560 break; 3561 } 3562 3563 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received " 3564 "management frame in non-AP mode"); 3565 break; 3566 #ifdef CONFIG_AP 3567 } 3568 3569 if (stype == WLAN_FC_STYPE_PROBE_REQ && 3570 data->rx_mgmt.frame_len > 24) { 3571 const u8 *ie = mgmt->u.probe_req.variable; 3572 size_t ie_len = data->rx_mgmt.frame_len - 3573 (mgmt->u.probe_req.variable - 3574 data->rx_mgmt.frame); 3575 3576 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da, 3577 mgmt->bssid, ie, ie_len, 3578 data->rx_mgmt.ssi_signal); 3579 } 3580 3581 ap_mgmt_rx(wpa_s, &data->rx_mgmt); 3582 #endif /* CONFIG_AP */ 3583 break; 3584 } 3585 case EVENT_RX_PROBE_REQ: 3586 if (data->rx_probe_req.sa == NULL || 3587 data->rx_probe_req.ie == NULL) 3588 break; 3589 #ifdef CONFIG_AP 3590 if (wpa_s->ap_iface) { 3591 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0], 3592 data->rx_probe_req.sa, 3593 data->rx_probe_req.da, 3594 data->rx_probe_req.bssid, 3595 data->rx_probe_req.ie, 3596 data->rx_probe_req.ie_len, 3597 data->rx_probe_req.ssi_signal); 3598 break; 3599 } 3600 #endif /* CONFIG_AP */ 3601 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa, 3602 data->rx_probe_req.da, 3603 data->rx_probe_req.bssid, 3604 data->rx_probe_req.ie, 3605 data->rx_probe_req.ie_len, 3606 0, 3607 data->rx_probe_req.ssi_signal); 3608 break; 3609 case EVENT_REMAIN_ON_CHANNEL: 3610 #ifdef CONFIG_OFFCHANNEL 3611 offchannel_remain_on_channel_cb( 3612 wpa_s, data->remain_on_channel.freq, 3613 data->remain_on_channel.duration); 3614 #endif /* CONFIG_OFFCHANNEL */ 3615 wpas_p2p_remain_on_channel_cb( 3616 wpa_s, data->remain_on_channel.freq, 3617 data->remain_on_channel.duration); 3618 break; 3619 case EVENT_CANCEL_REMAIN_ON_CHANNEL: 3620 #ifdef CONFIG_OFFCHANNEL 3621 offchannel_cancel_remain_on_channel_cb( 3622 wpa_s, data->remain_on_channel.freq); 3623 #endif /* CONFIG_OFFCHANNEL */ 3624 wpas_p2p_cancel_remain_on_channel_cb( 3625 wpa_s, data->remain_on_channel.freq); 3626 break; 3627 case EVENT_EAPOL_RX: 3628 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src, 3629 data->eapol_rx.data, 3630 data->eapol_rx.data_len); 3631 break; 3632 case EVENT_SIGNAL_CHANGE: 3633 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE 3634 "above=%d signal=%d noise=%d txrate=%d", 3635 data->signal_change.above_threshold, 3636 data->signal_change.current_signal, 3637 data->signal_change.current_noise, 3638 data->signal_change.current_txrate); 3639 wpa_bss_update_level(wpa_s->current_bss, 3640 data->signal_change.current_signal); 3641 bgscan_notify_signal_change( 3642 wpa_s, data->signal_change.above_threshold, 3643 data->signal_change.current_signal, 3644 data->signal_change.current_noise, 3645 data->signal_change.current_txrate); 3646 break; 3647 case EVENT_INTERFACE_ENABLED: 3648 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled"); 3649 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { 3650 wpa_supplicant_update_mac_addr(wpa_s); 3651 if (wpa_s->p2p_mgmt) { 3652 wpa_supplicant_set_state(wpa_s, 3653 WPA_DISCONNECTED); 3654 break; 3655 } 3656 3657 #ifdef CONFIG_AP 3658 if (!wpa_s->ap_iface) { 3659 wpa_supplicant_set_state(wpa_s, 3660 WPA_DISCONNECTED); 3661 wpa_s->scan_req = NORMAL_SCAN_REQ; 3662 wpa_supplicant_req_scan(wpa_s, 0, 0); 3663 } else 3664 wpa_supplicant_set_state(wpa_s, 3665 WPA_COMPLETED); 3666 #else /* CONFIG_AP */ 3667 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 3668 wpa_supplicant_req_scan(wpa_s, 0, 0); 3669 #endif /* CONFIG_AP */ 3670 } 3671 break; 3672 case EVENT_INTERFACE_DISABLED: 3673 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled"); 3674 #ifdef CONFIG_P2P 3675 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO || 3676 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group && 3677 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) { 3678 /* 3679 * Mark interface disabled if this happens to end up not 3680 * being removed as a separate P2P group interface. 3681 */ 3682 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 3683 /* 3684 * The interface was externally disabled. Remove 3685 * it assuming an external entity will start a 3686 * new session if needed. 3687 */ 3688 if (wpa_s->current_ssid && 3689 wpa_s->current_ssid->p2p_group) 3690 wpas_p2p_interface_unavailable(wpa_s); 3691 else 3692 wpas_p2p_disconnect(wpa_s); 3693 /* 3694 * wpa_s instance may have been freed, so must not use 3695 * it here anymore. 3696 */ 3697 break; 3698 } 3699 if (wpa_s->p2p_scan_work && wpa_s->global->p2p && 3700 p2p_in_progress(wpa_s->global->p2p) > 1) { 3701 /* This radio work will be cancelled, so clear P2P 3702 * state as well. 3703 */ 3704 p2p_stop_find(wpa_s->global->p2p); 3705 } 3706 #endif /* CONFIG_P2P */ 3707 3708 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 3709 /* 3710 * Indicate disconnection to keep ctrl_iface events 3711 * consistent. 3712 */ 3713 wpa_supplicant_event_disassoc( 3714 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1); 3715 } 3716 wpa_supplicant_mark_disassoc(wpa_s); 3717 radio_remove_works(wpa_s, NULL, 0); 3718 3719 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 3720 break; 3721 case EVENT_CHANNEL_LIST_CHANGED: 3722 wpa_supplicant_update_channel_list( 3723 wpa_s, &data->channel_list_changed); 3724 break; 3725 case EVENT_INTERFACE_UNAVAILABLE: 3726 wpas_p2p_interface_unavailable(wpa_s); 3727 break; 3728 case EVENT_BEST_CHANNEL: 3729 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received " 3730 "(%d %d %d)", 3731 data->best_chan.freq_24, data->best_chan.freq_5, 3732 data->best_chan.freq_overall); 3733 wpa_s->best_24_freq = data->best_chan.freq_24; 3734 wpa_s->best_5_freq = data->best_chan.freq_5; 3735 wpa_s->best_overall_freq = data->best_chan.freq_overall; 3736 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24, 3737 data->best_chan.freq_5, 3738 data->best_chan.freq_overall); 3739 break; 3740 case EVENT_UNPROT_DEAUTH: 3741 wpa_supplicant_event_unprot_deauth(wpa_s, 3742 &data->unprot_deauth); 3743 break; 3744 case EVENT_UNPROT_DISASSOC: 3745 wpa_supplicant_event_unprot_disassoc(wpa_s, 3746 &data->unprot_disassoc); 3747 break; 3748 case EVENT_STATION_LOW_ACK: 3749 #ifdef CONFIG_AP 3750 if (wpa_s->ap_iface && data) 3751 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0], 3752 data->low_ack.addr); 3753 #endif /* CONFIG_AP */ 3754 #ifdef CONFIG_TDLS 3755 if (data) 3756 wpa_tdls_disable_unreachable_link(wpa_s->wpa, 3757 data->low_ack.addr); 3758 #endif /* CONFIG_TDLS */ 3759 break; 3760 case EVENT_IBSS_PEER_LOST: 3761 #ifdef CONFIG_IBSS_RSN 3762 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer); 3763 #endif /* CONFIG_IBSS_RSN */ 3764 break; 3765 case EVENT_DRIVER_GTK_REKEY: 3766 if (os_memcmp(data->driver_gtk_rekey.bssid, 3767 wpa_s->bssid, ETH_ALEN)) 3768 break; 3769 if (!wpa_s->wpa) 3770 break; 3771 wpa_sm_update_replay_ctr(wpa_s->wpa, 3772 data->driver_gtk_rekey.replay_ctr); 3773 break; 3774 case EVENT_SCHED_SCAN_STOPPED: 3775 wpa_s->pno = 0; 3776 wpa_s->sched_scanning = 0; 3777 resched = wpa_s->scanning; 3778 wpa_supplicant_notify_scanning(wpa_s, 0); 3779 3780 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 3781 break; 3782 3783 /* 3784 * Start a new sched scan to continue searching for more SSIDs 3785 * either if timed out or PNO schedule scan is pending. 3786 */ 3787 if (wpa_s->sched_scan_timed_out) { 3788 wpa_supplicant_req_sched_scan(wpa_s); 3789 } else if (wpa_s->pno_sched_pending) { 3790 wpa_s->pno_sched_pending = 0; 3791 wpas_start_pno(wpa_s); 3792 } else if (resched) { 3793 wpa_supplicant_req_scan(wpa_s, 0, 0); 3794 } 3795 3796 break; 3797 case EVENT_WPS_BUTTON_PUSHED: 3798 #ifdef CONFIG_WPS 3799 wpas_wps_start_pbc(wpa_s, NULL, 0); 3800 #endif /* CONFIG_WPS */ 3801 break; 3802 case EVENT_AVOID_FREQUENCIES: 3803 wpa_supplicant_notify_avoid_freq(wpa_s, data); 3804 break; 3805 case EVENT_CONNECT_FAILED_REASON: 3806 #ifdef CONFIG_AP 3807 if (!wpa_s->ap_iface || !data) 3808 break; 3809 hostapd_event_connect_failed_reason( 3810 wpa_s->ap_iface->bss[0], 3811 data->connect_failed_reason.addr, 3812 data->connect_failed_reason.code); 3813 #endif /* CONFIG_AP */ 3814 break; 3815 case EVENT_NEW_PEER_CANDIDATE: 3816 #ifdef CONFIG_MESH 3817 if (!wpa_s->ifmsh || !data) 3818 break; 3819 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer, 3820 data->mesh_peer.ies, 3821 data->mesh_peer.ie_len); 3822 #endif /* CONFIG_MESH */ 3823 break; 3824 default: 3825 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event); 3826 break; 3827 } 3828 } 3829