1 /* 2 * WPA Supplicant - Driver event processing 3 * Copyright (c) 2003-2015, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "eapol_supp/eapol_supp_sm.h" 13 #include "rsn_supp/wpa.h" 14 #include "eloop.h" 15 #include "config.h" 16 #include "l2_packet/l2_packet.h" 17 #include "wpa_supplicant_i.h" 18 #include "driver_i.h" 19 #include "pcsc_funcs.h" 20 #include "rsn_supp/preauth.h" 21 #include "rsn_supp/pmksa_cache.h" 22 #include "common/wpa_ctrl.h" 23 #include "eap_peer/eap.h" 24 #include "ap/hostapd.h" 25 #include "p2p/p2p.h" 26 #include "wnm_sta.h" 27 #include "notify.h" 28 #include "common/ieee802_11_defs.h" 29 #include "common/ieee802_11_common.h" 30 #include "crypto/random.h" 31 #include "blacklist.h" 32 #include "wpas_glue.h" 33 #include "wps_supplicant.h" 34 #include "ibss_rsn.h" 35 #include "sme.h" 36 #include "gas_query.h" 37 #include "p2p_supplicant.h" 38 #include "bgscan.h" 39 #include "autoscan.h" 40 #include "ap.h" 41 #include "bss.h" 42 #include "scan.h" 43 #include "offchannel.h" 44 #include "interworking.h" 45 #include "mesh.h" 46 #include "mesh_mpm.h" 47 #include "wmm_ac.h" 48 49 50 #ifndef CONFIG_NO_SCAN_PROCESSING 51 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s, 52 int new_scan, int own_request); 53 #endif /* CONFIG_NO_SCAN_PROCESSING */ 54 55 56 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s, 57 struct wpa_ssid *ssid) 58 { 59 struct os_reltime now; 60 61 if (ssid == NULL || ssid->disabled_until.sec == 0) 62 return 0; 63 64 os_get_reltime(&now); 65 if (ssid->disabled_until.sec > now.sec) 66 return ssid->disabled_until.sec - now.sec; 67 68 wpas_clear_temp_disabled(wpa_s, ssid, 0); 69 70 return 0; 71 } 72 73 74 /** 75 * wpas_reenabled_network_time - Time until first network is re-enabled 76 * @wpa_s: Pointer to wpa_supplicant data 77 * Returns: If all enabled networks are temporarily disabled, returns the time 78 * (in sec) until the first network is re-enabled. Otherwise returns 0. 79 * 80 * This function is used in case all enabled networks are temporarily disabled, 81 * in which case it returns the time (in sec) that the first network will be 82 * re-enabled. The function assumes that at least one network is enabled. 83 */ 84 static int wpas_reenabled_network_time(struct wpa_supplicant *wpa_s) 85 { 86 struct wpa_ssid *ssid; 87 int disabled_for, res = 0; 88 89 #ifdef CONFIG_INTERWORKING 90 if (wpa_s->conf->auto_interworking && wpa_s->conf->interworking && 91 wpa_s->conf->cred) 92 return 0; 93 #endif /* CONFIG_INTERWORKING */ 94 95 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 96 if (ssid->disabled) 97 continue; 98 99 disabled_for = wpas_temp_disabled(wpa_s, ssid); 100 if (!disabled_for) 101 return 0; 102 103 if (!res || disabled_for < res) 104 res = disabled_for; 105 } 106 107 return res; 108 } 109 110 111 void wpas_network_reenabled(void *eloop_ctx, void *timeout_ctx) 112 { 113 struct wpa_supplicant *wpa_s = eloop_ctx; 114 115 if (wpa_s->disconnected || wpa_s->wpa_state != WPA_SCANNING) 116 return; 117 118 wpa_dbg(wpa_s, MSG_DEBUG, 119 "Try to associate due to network getting re-enabled"); 120 if (wpa_supplicant_fast_associate(wpa_s) != 1) { 121 wpa_supplicant_cancel_sched_scan(wpa_s); 122 wpa_supplicant_req_scan(wpa_s, 0, 0); 123 } 124 } 125 126 127 static struct wpa_bss * wpa_supplicant_get_new_bss( 128 struct wpa_supplicant *wpa_s, const u8 *bssid) 129 { 130 struct wpa_bss *bss = NULL; 131 struct wpa_ssid *ssid = wpa_s->current_ssid; 132 133 if (ssid->ssid_len > 0) 134 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len); 135 if (!bss) 136 bss = wpa_bss_get_bssid(wpa_s, bssid); 137 138 return bss; 139 } 140 141 142 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s) 143 { 144 struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid); 145 146 if (!bss) { 147 wpa_supplicant_update_scan_results(wpa_s); 148 149 /* Get the BSS from the new scan results */ 150 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid); 151 } 152 153 if (bss) 154 wpa_s->current_bss = bss; 155 } 156 157 158 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s) 159 { 160 struct wpa_ssid *ssid, *old_ssid; 161 u8 drv_ssid[SSID_MAX_LEN]; 162 size_t drv_ssid_len; 163 int res; 164 165 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) { 166 wpa_supplicant_update_current_bss(wpa_s); 167 168 if (wpa_s->current_ssid->ssid_len == 0) 169 return 0; /* current profile still in use */ 170 res = wpa_drv_get_ssid(wpa_s, drv_ssid); 171 if (res < 0) { 172 wpa_msg(wpa_s, MSG_INFO, 173 "Failed to read SSID from driver"); 174 return 0; /* try to use current profile */ 175 } 176 drv_ssid_len = res; 177 178 if (drv_ssid_len == wpa_s->current_ssid->ssid_len && 179 os_memcmp(drv_ssid, wpa_s->current_ssid->ssid, 180 drv_ssid_len) == 0) 181 return 0; /* current profile still in use */ 182 183 wpa_msg(wpa_s, MSG_DEBUG, 184 "Driver-initiated BSS selection changed the SSID to %s", 185 wpa_ssid_txt(drv_ssid, drv_ssid_len)); 186 /* continue selecting a new network profile */ 187 } 188 189 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association " 190 "information"); 191 ssid = wpa_supplicant_get_ssid(wpa_s); 192 if (ssid == NULL) { 193 wpa_msg(wpa_s, MSG_INFO, 194 "No network configuration found for the current AP"); 195 return -1; 196 } 197 198 if (wpas_network_disabled(wpa_s, ssid)) { 199 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled"); 200 return -1; 201 } 202 203 if (disallowed_bssid(wpa_s, wpa_s->bssid) || 204 disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) { 205 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed"); 206 return -1; 207 } 208 209 res = wpas_temp_disabled(wpa_s, ssid); 210 if (res > 0) { 211 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily " 212 "disabled for %d second(s)", res); 213 return -1; 214 } 215 216 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the " 217 "current AP"); 218 if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { 219 u8 wpa_ie[80]; 220 size_t wpa_ie_len = sizeof(wpa_ie); 221 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, 222 wpa_ie, &wpa_ie_len) < 0) 223 wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites"); 224 } else { 225 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 226 } 227 228 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) 229 eapol_sm_invalidate_cached_session(wpa_s->eapol); 230 old_ssid = wpa_s->current_ssid; 231 wpa_s->current_ssid = ssid; 232 233 wpa_supplicant_update_current_bss(wpa_s); 234 235 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 236 wpa_supplicant_initiate_eapol(wpa_s); 237 if (old_ssid != wpa_s->current_ssid) 238 wpas_notify_network_changed(wpa_s); 239 240 return 0; 241 } 242 243 244 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx) 245 { 246 struct wpa_supplicant *wpa_s = eloop_ctx; 247 248 if (wpa_s->countermeasures) { 249 wpa_s->countermeasures = 0; 250 wpa_drv_set_countermeasures(wpa_s, 0); 251 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped"); 252 253 /* 254 * It is possible that the device is sched scanning, which means 255 * that a connection attempt will be done only when we receive 256 * scan results. However, in this case, it would be preferable 257 * to scan and connect immediately, so cancel the sched_scan and 258 * issue a regular scan flow. 259 */ 260 wpa_supplicant_cancel_sched_scan(wpa_s); 261 wpa_supplicant_req_scan(wpa_s, 0, 0); 262 } 263 } 264 265 266 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s) 267 { 268 int bssid_changed; 269 270 wnm_bss_keep_alive_deinit(wpa_s); 271 272 #ifdef CONFIG_IBSS_RSN 273 ibss_rsn_deinit(wpa_s->ibss_rsn); 274 wpa_s->ibss_rsn = NULL; 275 #endif /* CONFIG_IBSS_RSN */ 276 277 #ifdef CONFIG_AP 278 wpa_supplicant_ap_deinit(wpa_s); 279 #endif /* CONFIG_AP */ 280 281 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 282 return; 283 284 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 285 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 286 os_memset(wpa_s->bssid, 0, ETH_ALEN); 287 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 288 sme_clear_on_disassoc(wpa_s); 289 #ifdef CONFIG_P2P 290 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 291 #endif /* CONFIG_P2P */ 292 wpa_s->current_bss = NULL; 293 wpa_s->assoc_freq = 0; 294 295 if (bssid_changed) 296 wpas_notify_bssid_changed(wpa_s); 297 298 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 299 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 300 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) 301 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 302 wpa_s->ap_ies_from_associnfo = 0; 303 wpa_s->current_ssid = NULL; 304 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 305 wpa_s->key_mgmt = 0; 306 307 wpas_rrm_reset(wpa_s); 308 } 309 310 311 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s) 312 { 313 struct wpa_ie_data ie; 314 int pmksa_set = -1; 315 size_t i; 316 317 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 || 318 ie.pmkid == NULL) 319 return; 320 321 for (i = 0; i < ie.num_pmkid; i++) { 322 pmksa_set = pmksa_cache_set_current(wpa_s->wpa, 323 ie.pmkid + i * PMKID_LEN, 324 NULL, NULL, 0); 325 if (pmksa_set == 0) { 326 eapol_sm_notify_pmkid_attempt(wpa_s->eapol); 327 break; 328 } 329 } 330 331 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from " 332 "PMKSA cache", pmksa_set == 0 ? "" : "not "); 333 } 334 335 336 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s, 337 union wpa_event_data *data) 338 { 339 if (data == NULL) { 340 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate " 341 "event"); 342 return; 343 } 344 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR 345 " index=%d preauth=%d", 346 MAC2STR(data->pmkid_candidate.bssid), 347 data->pmkid_candidate.index, 348 data->pmkid_candidate.preauth); 349 350 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid, 351 data->pmkid_candidate.index, 352 data->pmkid_candidate.preauth); 353 } 354 355 356 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s) 357 { 358 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 359 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) 360 return 0; 361 362 #ifdef IEEE8021X_EAPOL 363 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA && 364 wpa_s->current_ssid && 365 !(wpa_s->current_ssid->eapol_flags & 366 (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 367 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) { 368 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either 369 * plaintext or static WEP keys). */ 370 return 0; 371 } 372 #endif /* IEEE8021X_EAPOL */ 373 374 return 1; 375 } 376 377 378 /** 379 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC 380 * @wpa_s: pointer to wpa_supplicant data 381 * @ssid: Configuration data for the network 382 * Returns: 0 on success, -1 on failure 383 * 384 * This function is called when starting authentication with a network that is 385 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA). 386 */ 387 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s, 388 struct wpa_ssid *ssid) 389 { 390 #ifdef IEEE8021X_EAPOL 391 #ifdef PCSC_FUNCS 392 int aka = 0, sim = 0; 393 394 if ((ssid != NULL && ssid->eap.pcsc == NULL) || 395 wpa_s->scard != NULL || wpa_s->conf->external_sim) 396 return 0; 397 398 if (ssid == NULL || ssid->eap.eap_methods == NULL) { 399 sim = 1; 400 aka = 1; 401 } else { 402 struct eap_method_type *eap = ssid->eap.eap_methods; 403 while (eap->vendor != EAP_VENDOR_IETF || 404 eap->method != EAP_TYPE_NONE) { 405 if (eap->vendor == EAP_VENDOR_IETF) { 406 if (eap->method == EAP_TYPE_SIM) 407 sim = 1; 408 else if (eap->method == EAP_TYPE_AKA || 409 eap->method == EAP_TYPE_AKA_PRIME) 410 aka = 1; 411 } 412 eap++; 413 } 414 } 415 416 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL) 417 sim = 0; 418 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL && 419 eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) == 420 NULL) 421 aka = 0; 422 423 if (!sim && !aka) { 424 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to " 425 "use SIM, but neither EAP-SIM nor EAP-AKA are " 426 "enabled"); 427 return 0; 428 } 429 430 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM " 431 "(sim=%d aka=%d) - initialize PCSC", sim, aka); 432 433 wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader); 434 if (wpa_s->scard == NULL) { 435 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM " 436 "(pcsc-lite)"); 437 return -1; 438 } 439 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard); 440 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard); 441 #endif /* PCSC_FUNCS */ 442 #endif /* IEEE8021X_EAPOL */ 443 444 return 0; 445 } 446 447 448 #ifndef CONFIG_NO_SCAN_PROCESSING 449 450 static int has_wep_key(struct wpa_ssid *ssid) 451 { 452 int i; 453 454 for (i = 0; i < NUM_WEP_KEYS; i++) { 455 if (ssid->wep_key_len[i]) 456 return 1; 457 } 458 459 return 0; 460 } 461 462 463 static int wpa_supplicant_match_privacy(struct wpa_bss *bss, 464 struct wpa_ssid *ssid) 465 { 466 int privacy = 0; 467 468 if (ssid->mixed_cell) 469 return 1; 470 471 #ifdef CONFIG_WPS 472 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 473 return 1; 474 #endif /* CONFIG_WPS */ 475 476 if (has_wep_key(ssid)) 477 privacy = 1; 478 479 #ifdef IEEE8021X_EAPOL 480 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 481 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 482 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) 483 privacy = 1; 484 #endif /* IEEE8021X_EAPOL */ 485 486 if (wpa_key_mgmt_wpa(ssid->key_mgmt)) 487 privacy = 1; 488 489 if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN) 490 privacy = 1; 491 492 if (bss->caps & IEEE80211_CAP_PRIVACY) 493 return privacy; 494 return !privacy; 495 } 496 497 498 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s, 499 struct wpa_ssid *ssid, 500 struct wpa_bss *bss) 501 { 502 struct wpa_ie_data ie; 503 int proto_match = 0; 504 const u8 *rsn_ie, *wpa_ie; 505 int ret; 506 int wep_ok; 507 508 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss); 509 if (ret >= 0) 510 return ret; 511 512 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */ 513 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) && 514 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) && 515 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) || 516 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)); 517 518 rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 519 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) { 520 proto_match++; 521 522 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) { 523 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse " 524 "failed"); 525 break; 526 } 527 528 if (wep_ok && 529 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104))) 530 { 531 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN " 532 "in RSN IE"); 533 return 1; 534 } 535 536 if (!(ie.proto & ssid->proto)) { 537 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto " 538 "mismatch"); 539 break; 540 } 541 542 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) { 543 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK " 544 "cipher mismatch"); 545 break; 546 } 547 548 if (!(ie.group_cipher & ssid->group_cipher)) { 549 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK " 550 "cipher mismatch"); 551 break; 552 } 553 554 if (!(ie.key_mgmt & ssid->key_mgmt)) { 555 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt " 556 "mismatch"); 557 break; 558 } 559 560 #ifdef CONFIG_IEEE80211W 561 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) && 562 wpas_get_ssid_pmf(wpa_s, ssid) == 563 MGMT_FRAME_PROTECTION_REQUIRED) { 564 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt " 565 "frame protection"); 566 break; 567 } 568 #endif /* CONFIG_IEEE80211W */ 569 570 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE"); 571 return 1; 572 } 573 574 wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 575 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) { 576 proto_match++; 577 578 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) { 579 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse " 580 "failed"); 581 break; 582 } 583 584 if (wep_ok && 585 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104))) 586 { 587 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN " 588 "in WPA IE"); 589 return 1; 590 } 591 592 if (!(ie.proto & ssid->proto)) { 593 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto " 594 "mismatch"); 595 break; 596 } 597 598 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) { 599 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK " 600 "cipher mismatch"); 601 break; 602 } 603 604 if (!(ie.group_cipher & ssid->group_cipher)) { 605 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK " 606 "cipher mismatch"); 607 break; 608 } 609 610 if (!(ie.key_mgmt & ssid->key_mgmt)) { 611 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt " 612 "mismatch"); 613 break; 614 } 615 616 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE"); 617 return 1; 618 } 619 620 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie && 621 !rsn_ie) { 622 wpa_dbg(wpa_s, MSG_DEBUG, " allow for non-WPA IEEE 802.1X"); 623 return 1; 624 } 625 626 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) && 627 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) { 628 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match"); 629 return 0; 630 } 631 632 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && 633 wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) { 634 wpa_dbg(wpa_s, MSG_DEBUG, " allow in OSEN"); 635 return 1; 636 } 637 638 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) { 639 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2"); 640 return 1; 641 } 642 643 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with " 644 "WPA/WPA2"); 645 646 return 0; 647 } 648 649 650 static int freq_allowed(int *freqs, int freq) 651 { 652 int i; 653 654 if (freqs == NULL) 655 return 1; 656 657 for (i = 0; freqs[i]; i++) 658 if (freqs[i] == freq) 659 return 1; 660 return 0; 661 } 662 663 664 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) 665 { 666 const struct hostapd_hw_modes *mode = NULL, *modes; 667 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES }; 668 const u8 *rate_ie; 669 int i, j, k; 670 671 if (bss->freq == 0) 672 return 1; /* Cannot do matching without knowing band */ 673 674 modes = wpa_s->hw.modes; 675 if (modes == NULL) { 676 /* 677 * The driver does not provide any additional information 678 * about the utilized hardware, so allow the connection attempt 679 * to continue. 680 */ 681 return 1; 682 } 683 684 for (i = 0; i < wpa_s->hw.num_modes; i++) { 685 for (j = 0; j < modes[i].num_channels; j++) { 686 int freq = modes[i].channels[j].freq; 687 if (freq == bss->freq) { 688 if (mode && 689 mode->mode == HOSTAPD_MODE_IEEE80211G) 690 break; /* do not allow 802.11b replace 691 * 802.11g */ 692 mode = &modes[i]; 693 break; 694 } 695 } 696 } 697 698 if (mode == NULL) 699 return 0; 700 701 for (i = 0; i < (int) sizeof(scan_ie); i++) { 702 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]); 703 if (rate_ie == NULL) 704 continue; 705 706 for (j = 2; j < rate_ie[1] + 2; j++) { 707 int flagged = !!(rate_ie[j] & 0x80); 708 int r = (rate_ie[j] & 0x7f) * 5; 709 710 /* 711 * IEEE Std 802.11n-2009 7.3.2.2: 712 * The new BSS Membership selector value is encoded 713 * like a legacy basic rate, but it is not a rate and 714 * only indicates if the BSS members are required to 715 * support the mandatory features of Clause 20 [HT PHY] 716 * in order to join the BSS. 717 */ 718 if (flagged && ((rate_ie[j] & 0x7f) == 719 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) { 720 if (!ht_supported(mode)) { 721 wpa_dbg(wpa_s, MSG_DEBUG, 722 " hardware does not support " 723 "HT PHY"); 724 return 0; 725 } 726 continue; 727 } 728 729 /* There's also a VHT selector for 802.11ac */ 730 if (flagged && ((rate_ie[j] & 0x7f) == 731 BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) { 732 if (!vht_supported(mode)) { 733 wpa_dbg(wpa_s, MSG_DEBUG, 734 " hardware does not support " 735 "VHT PHY"); 736 return 0; 737 } 738 continue; 739 } 740 741 if (!flagged) 742 continue; 743 744 /* check for legacy basic rates */ 745 for (k = 0; k < mode->num_rates; k++) { 746 if (mode->rates[k] == r) 747 break; 748 } 749 if (k == mode->num_rates) { 750 /* 751 * IEEE Std 802.11-2007 7.3.2.2 demands that in 752 * order to join a BSS all required rates 753 * have to be supported by the hardware. 754 */ 755 wpa_dbg(wpa_s, MSG_DEBUG, 756 " hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)", 757 r / 10, r % 10, 758 bss->freq, mode->mode, mode->num_rates); 759 return 0; 760 } 761 } 762 } 763 764 return 1; 765 } 766 767 768 /* 769 * Test whether BSS is in an ESS. 770 * This is done differently in DMG (60 GHz) and non-DMG bands 771 */ 772 static int bss_is_ess(struct wpa_bss *bss) 773 { 774 if (bss_is_dmg(bss)) { 775 return (bss->caps & IEEE80211_CAP_DMG_MASK) == 776 IEEE80211_CAP_DMG_AP; 777 } 778 779 return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) == 780 IEEE80211_CAP_ESS); 781 } 782 783 784 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask) 785 { 786 size_t i; 787 788 for (i = 0; i < ETH_ALEN; i++) { 789 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i])) 790 return 0; 791 } 792 return 1; 793 } 794 795 796 static int addr_in_list(const u8 *addr, const u8 *list, size_t num) 797 { 798 size_t i; 799 800 for (i = 0; i < num; i++) { 801 const u8 *a = list + i * ETH_ALEN * 2; 802 const u8 *m = a + ETH_ALEN; 803 804 if (match_mac_mask(a, addr, m)) 805 return 1; 806 } 807 return 0; 808 } 809 810 811 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s, 812 int i, struct wpa_bss *bss, 813 struct wpa_ssid *group, 814 int only_first_ssid) 815 { 816 u8 wpa_ie_len, rsn_ie_len; 817 int wpa; 818 struct wpa_blacklist *e; 819 const u8 *ie; 820 struct wpa_ssid *ssid; 821 int osen; 822 823 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 824 wpa_ie_len = ie ? ie[1] : 0; 825 826 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 827 rsn_ie_len = ie ? ie[1] : 0; 828 829 ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE); 830 osen = ie != NULL; 831 832 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' " 833 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s", 834 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len), 835 wpa_ie_len, rsn_ie_len, bss->caps, bss->level, 836 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "", 837 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) || 838 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ? 839 " p2p" : "", 840 osen ? " osen=1" : ""); 841 842 e = wpa_blacklist_get(wpa_s, bss->bssid); 843 if (e) { 844 int limit = 1; 845 if (wpa_supplicant_enabled_networks(wpa_s) == 1) { 846 /* 847 * When only a single network is enabled, we can 848 * trigger blacklisting on the first failure. This 849 * should not be done with multiple enabled networks to 850 * avoid getting forced to move into a worse ESS on 851 * single error if there are no other BSSes of the 852 * current ESS. 853 */ 854 limit = 0; 855 } 856 if (e->count > limit) { 857 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted " 858 "(count=%d limit=%d)", e->count, limit); 859 return NULL; 860 } 861 } 862 863 if (bss->ssid_len == 0) { 864 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known"); 865 return NULL; 866 } 867 868 if (disallowed_bssid(wpa_s, bss->bssid)) { 869 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed"); 870 return NULL; 871 } 872 873 if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) { 874 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed"); 875 return NULL; 876 } 877 878 wpa = wpa_ie_len > 0 || rsn_ie_len > 0; 879 880 for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) { 881 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0); 882 int res; 883 884 if (wpas_network_disabled(wpa_s, ssid)) { 885 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled"); 886 continue; 887 } 888 889 res = wpas_temp_disabled(wpa_s, ssid); 890 if (res > 0) { 891 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled " 892 "temporarily for %d second(s)", res); 893 continue; 894 } 895 896 #ifdef CONFIG_WPS 897 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) { 898 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted " 899 "(WPS)"); 900 continue; 901 } 902 903 if (wpa && ssid->ssid_len == 0 && 904 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss)) 905 check_ssid = 0; 906 907 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 908 /* Only allow wildcard SSID match if an AP 909 * advertises active WPS operation that matches 910 * with our mode. */ 911 check_ssid = 1; 912 if (ssid->ssid_len == 0 && 913 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss)) 914 check_ssid = 0; 915 } 916 #endif /* CONFIG_WPS */ 917 918 if (ssid->bssid_set && ssid->ssid_len == 0 && 919 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0) 920 check_ssid = 0; 921 922 if (check_ssid && 923 (bss->ssid_len != ssid->ssid_len || 924 os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) { 925 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch"); 926 continue; 927 } 928 929 if (ssid->bssid_set && 930 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) { 931 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch"); 932 continue; 933 } 934 935 /* check blacklist */ 936 if (ssid->num_bssid_blacklist && 937 addr_in_list(bss->bssid, ssid->bssid_blacklist, 938 ssid->num_bssid_blacklist)) { 939 wpa_dbg(wpa_s, MSG_DEBUG, 940 " skip - BSSID blacklisted"); 941 continue; 942 } 943 944 /* if there is a whitelist, only accept those APs */ 945 if (ssid->num_bssid_whitelist && 946 !addr_in_list(bss->bssid, ssid->bssid_whitelist, 947 ssid->num_bssid_whitelist)) { 948 wpa_dbg(wpa_s, MSG_DEBUG, 949 " skip - BSSID not in whitelist"); 950 continue; 951 } 952 953 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss)) 954 continue; 955 956 if (!osen && !wpa && 957 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) && 958 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) && 959 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) { 960 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network " 961 "not allowed"); 962 continue; 963 } 964 965 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) && 966 has_wep_key(ssid)) { 967 wpa_dbg(wpa_s, MSG_DEBUG, " skip - ignore WPA/WPA2 AP for WEP network block"); 968 continue; 969 } 970 971 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) { 972 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-OSEN network " 973 "not allowed"); 974 continue; 975 } 976 977 if (!wpa_supplicant_match_privacy(bss, ssid)) { 978 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy " 979 "mismatch"); 980 continue; 981 } 982 983 if (!bss_is_ess(bss)) { 984 wpa_dbg(wpa_s, MSG_DEBUG, " skip - not ESS network"); 985 continue; 986 } 987 988 if (!freq_allowed(ssid->freq_list, bss->freq)) { 989 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not " 990 "allowed"); 991 continue; 992 } 993 994 if (!rate_match(wpa_s, bss)) { 995 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do " 996 "not match"); 997 continue; 998 } 999 1000 #ifdef CONFIG_P2P 1001 if (ssid->p2p_group && 1002 !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) && 1003 !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) { 1004 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P IE seen"); 1005 continue; 1006 } 1007 1008 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) { 1009 struct wpabuf *p2p_ie; 1010 u8 dev_addr[ETH_ALEN]; 1011 1012 ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE); 1013 if (ie == NULL) { 1014 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P element"); 1015 continue; 1016 } 1017 p2p_ie = wpa_bss_get_vendor_ie_multi( 1018 bss, P2P_IE_VENDOR_TYPE); 1019 if (p2p_ie == NULL) { 1020 wpa_dbg(wpa_s, MSG_DEBUG, " skip - could not fetch P2P element"); 1021 continue; 1022 } 1023 1024 if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0 1025 || os_memcmp(dev_addr, ssid->go_p2p_dev_addr, 1026 ETH_ALEN) != 0) { 1027 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no matching GO P2P Device Address in P2P element"); 1028 wpabuf_free(p2p_ie); 1029 continue; 1030 } 1031 wpabuf_free(p2p_ie); 1032 } 1033 1034 /* 1035 * TODO: skip the AP if its P2P IE has Group Formation 1036 * bit set in the P2P Group Capability Bitmap and we 1037 * are not in Group Formation with that device. 1038 */ 1039 #endif /* CONFIG_P2P */ 1040 1041 /* Matching configuration found */ 1042 return ssid; 1043 } 1044 1045 /* No matching configuration found */ 1046 return NULL; 1047 } 1048 1049 1050 static struct wpa_bss * 1051 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s, 1052 struct wpa_ssid *group, 1053 struct wpa_ssid **selected_ssid, 1054 int only_first_ssid) 1055 { 1056 unsigned int i; 1057 1058 if (only_first_ssid) 1059 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d", 1060 group->id); 1061 else 1062 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d", 1063 group->priority); 1064 1065 for (i = 0; i < wpa_s->last_scan_res_used; i++) { 1066 struct wpa_bss *bss = wpa_s->last_scan_res[i]; 1067 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group, 1068 only_first_ssid); 1069 if (!*selected_ssid) 1070 continue; 1071 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR 1072 " ssid='%s'", 1073 MAC2STR(bss->bssid), 1074 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 1075 return bss; 1076 } 1077 1078 return NULL; 1079 } 1080 1081 1082 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s, 1083 struct wpa_ssid **selected_ssid) 1084 { 1085 struct wpa_bss *selected = NULL; 1086 int prio; 1087 struct wpa_ssid *next_ssid = NULL; 1088 struct wpa_ssid *ssid; 1089 1090 if (wpa_s->last_scan_res == NULL || 1091 wpa_s->last_scan_res_used == 0) 1092 return NULL; /* no scan results from last update */ 1093 1094 if (wpa_s->next_ssid) { 1095 /* check that next_ssid is still valid */ 1096 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1097 if (ssid == wpa_s->next_ssid) 1098 break; 1099 } 1100 next_ssid = ssid; 1101 wpa_s->next_ssid = NULL; 1102 } 1103 1104 while (selected == NULL) { 1105 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) { 1106 if (next_ssid && next_ssid->priority == 1107 wpa_s->conf->pssid[prio]->priority) { 1108 selected = wpa_supplicant_select_bss( 1109 wpa_s, next_ssid, selected_ssid, 1); 1110 if (selected) 1111 break; 1112 } 1113 selected = wpa_supplicant_select_bss( 1114 wpa_s, wpa_s->conf->pssid[prio], 1115 selected_ssid, 0); 1116 if (selected) 1117 break; 1118 } 1119 1120 if (selected == NULL && wpa_s->blacklist && 1121 !wpa_s->countermeasures) { 1122 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear " 1123 "blacklist and try again"); 1124 wpa_blacklist_clear(wpa_s); 1125 wpa_s->blacklist_cleared++; 1126 } else if (selected == NULL) 1127 break; 1128 } 1129 1130 ssid = *selected_ssid; 1131 if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set && 1132 !ssid->passphrase && !ssid->ext_psk) { 1133 const char *field_name, *txt = NULL; 1134 1135 wpa_dbg(wpa_s, MSG_DEBUG, 1136 "PSK/passphrase not yet available for the selected network"); 1137 1138 wpas_notify_network_request(wpa_s, ssid, 1139 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL); 1140 1141 field_name = wpa_supplicant_ctrl_req_to_string( 1142 WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt); 1143 if (field_name == NULL) 1144 return NULL; 1145 1146 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt); 1147 1148 selected = NULL; 1149 } 1150 1151 return selected; 1152 } 1153 1154 1155 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s, 1156 int timeout_sec, int timeout_usec) 1157 { 1158 if (!wpa_supplicant_enabled_networks(wpa_s)) { 1159 /* 1160 * No networks are enabled; short-circuit request so 1161 * we don't wait timeout seconds before transitioning 1162 * to INACTIVE state. 1163 */ 1164 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request " 1165 "since there are no enabled networks"); 1166 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); 1167 return; 1168 } 1169 1170 wpa_s->scan_for_connection = 1; 1171 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec); 1172 } 1173 1174 1175 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s, 1176 struct wpa_bss *selected, 1177 struct wpa_ssid *ssid) 1178 { 1179 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) { 1180 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP 1181 "PBC session overlap"); 1182 wpas_notify_wps_event_pbc_overlap(wpa_s); 1183 #ifdef CONFIG_P2P 1184 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 1185 wpa_s->p2p_in_provisioning) { 1186 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb, 1187 wpa_s, NULL); 1188 return -1; 1189 } 1190 #endif /* CONFIG_P2P */ 1191 1192 #ifdef CONFIG_WPS 1193 wpas_wps_cancel(wpa_s); 1194 #endif /* CONFIG_WPS */ 1195 return -1; 1196 } 1197 1198 wpa_msg(wpa_s, MSG_DEBUG, 1199 "Considering connect request: reassociate: %d selected: " 1200 MACSTR " bssid: " MACSTR " pending: " MACSTR 1201 " wpa_state: %s ssid=%p current_ssid=%p", 1202 wpa_s->reassociate, MAC2STR(selected->bssid), 1203 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid), 1204 wpa_supplicant_state_txt(wpa_s->wpa_state), 1205 ssid, wpa_s->current_ssid); 1206 1207 /* 1208 * Do not trigger new association unless the BSSID has changed or if 1209 * reassociation is requested. If we are in process of associating with 1210 * the selected BSSID, do not trigger new attempt. 1211 */ 1212 if (wpa_s->reassociate || 1213 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 && 1214 ((wpa_s->wpa_state != WPA_ASSOCIATING && 1215 wpa_s->wpa_state != WPA_AUTHENTICATING) || 1216 (!is_zero_ether_addr(wpa_s->pending_bssid) && 1217 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) != 1218 0) || 1219 (is_zero_ether_addr(wpa_s->pending_bssid) && 1220 ssid != wpa_s->current_ssid)))) { 1221 if (wpa_supplicant_scard_init(wpa_s, ssid)) { 1222 wpa_supplicant_req_new_scan(wpa_s, 10, 0); 1223 return 0; 1224 } 1225 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR, 1226 MAC2STR(selected->bssid)); 1227 wpa_supplicant_associate(wpa_s, selected, ssid); 1228 } else { 1229 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to " 1230 "connect with the selected AP"); 1231 } 1232 1233 return 0; 1234 } 1235 1236 1237 static struct wpa_ssid * 1238 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s) 1239 { 1240 int prio; 1241 struct wpa_ssid *ssid; 1242 1243 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) { 1244 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext) 1245 { 1246 if (wpas_network_disabled(wpa_s, ssid)) 1247 continue; 1248 if (ssid->mode == IEEE80211_MODE_IBSS || 1249 ssid->mode == IEEE80211_MODE_AP || 1250 ssid->mode == IEEE80211_MODE_MESH) 1251 return ssid; 1252 } 1253 } 1254 return NULL; 1255 } 1256 1257 1258 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based 1259 * on BSS added and BSS changed events */ 1260 static void wpa_supplicant_rsn_preauth_scan_results( 1261 struct wpa_supplicant *wpa_s) 1262 { 1263 struct wpa_bss *bss; 1264 1265 if (rsn_preauth_scan_results(wpa_s->wpa) < 0) 1266 return; 1267 1268 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1269 const u8 *ssid, *rsn; 1270 1271 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID); 1272 if (ssid == NULL) 1273 continue; 1274 1275 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 1276 if (rsn == NULL) 1277 continue; 1278 1279 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn); 1280 } 1281 1282 } 1283 1284 1285 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s, 1286 struct wpa_bss *selected, 1287 struct wpa_ssid *ssid) 1288 { 1289 struct wpa_bss *current_bss = NULL; 1290 #ifndef CONFIG_NO_ROAMING 1291 int min_diff; 1292 #endif /* CONFIG_NO_ROAMING */ 1293 1294 if (wpa_s->reassociate) 1295 return 1; /* explicit request to reassociate */ 1296 if (wpa_s->wpa_state < WPA_ASSOCIATED) 1297 return 1; /* we are not associated; continue */ 1298 if (wpa_s->current_ssid == NULL) 1299 return 1; /* unknown current SSID */ 1300 if (wpa_s->current_ssid != ssid) 1301 return 1; /* different network block */ 1302 1303 if (wpas_driver_bss_selection(wpa_s)) 1304 return 0; /* Driver-based roaming */ 1305 1306 if (wpa_s->current_ssid->ssid) 1307 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid, 1308 wpa_s->current_ssid->ssid, 1309 wpa_s->current_ssid->ssid_len); 1310 if (!current_bss) 1311 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid); 1312 1313 if (!current_bss) 1314 return 1; /* current BSS not seen in scan results */ 1315 1316 if (current_bss == selected) 1317 return 0; 1318 1319 if (selected->last_update_idx > current_bss->last_update_idx) 1320 return 1; /* current BSS not seen in the last scan */ 1321 1322 #ifndef CONFIG_NO_ROAMING 1323 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation"); 1324 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR 1325 " level=%d snr=%d est_throughput=%u", 1326 MAC2STR(current_bss->bssid), current_bss->level, 1327 current_bss->snr, current_bss->est_throughput); 1328 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR 1329 " level=%d snr=%d est_throughput=%u", 1330 MAC2STR(selected->bssid), selected->level, 1331 selected->snr, selected->est_throughput); 1332 1333 if (wpa_s->current_ssid->bssid_set && 1334 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) == 1335 0) { 1336 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS " 1337 "has preferred BSSID"); 1338 return 1; 1339 } 1340 1341 if (selected->est_throughput > current_bss->est_throughput + 5000) { 1342 wpa_dbg(wpa_s, MSG_DEBUG, 1343 "Allow reassociation - selected BSS has better estimated throughput"); 1344 return 1; 1345 } 1346 1347 if (current_bss->level < 0 && current_bss->level > selected->level) { 1348 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better " 1349 "signal level"); 1350 return 0; 1351 } 1352 1353 min_diff = 2; 1354 if (current_bss->level < 0) { 1355 if (current_bss->level < -85) 1356 min_diff = 1; 1357 else if (current_bss->level < -80) 1358 min_diff = 2; 1359 else if (current_bss->level < -75) 1360 min_diff = 3; 1361 else if (current_bss->level < -70) 1362 min_diff = 4; 1363 else 1364 min_diff = 5; 1365 } 1366 if (abs(current_bss->level - selected->level) < min_diff) { 1367 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference " 1368 "in signal level"); 1369 return 0; 1370 } 1371 1372 return 1; 1373 #else /* CONFIG_NO_ROAMING */ 1374 return 0; 1375 #endif /* CONFIG_NO_ROAMING */ 1376 } 1377 1378 1379 /* Return != 0 if no scan results could be fetched or if scan results should not 1380 * be shared with other virtual interfaces. */ 1381 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s, 1382 union wpa_event_data *data, 1383 int own_request) 1384 { 1385 struct wpa_scan_results *scan_res = NULL; 1386 int ret = 0; 1387 int ap = 0; 1388 #ifndef CONFIG_NO_RANDOM_POOL 1389 size_t i, num; 1390 #endif /* CONFIG_NO_RANDOM_POOL */ 1391 1392 #ifdef CONFIG_AP 1393 if (wpa_s->ap_iface) 1394 ap = 1; 1395 #endif /* CONFIG_AP */ 1396 1397 wpa_supplicant_notify_scanning(wpa_s, 0); 1398 1399 scan_res = wpa_supplicant_get_scan_results(wpa_s, 1400 data ? &data->scan_info : 1401 NULL, 1); 1402 if (scan_res == NULL) { 1403 if (wpa_s->conf->ap_scan == 2 || ap || 1404 wpa_s->scan_res_handler == scan_only_handler) 1405 return -1; 1406 if (!own_request) 1407 return -1; 1408 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try " 1409 "scanning again"); 1410 wpa_supplicant_req_new_scan(wpa_s, 1, 0); 1411 ret = -1; 1412 goto scan_work_done; 1413 } 1414 1415 #ifndef CONFIG_NO_RANDOM_POOL 1416 num = scan_res->num; 1417 if (num > 10) 1418 num = 10; 1419 for (i = 0; i < num; i++) { 1420 u8 buf[5]; 1421 struct wpa_scan_res *res = scan_res->res[i]; 1422 buf[0] = res->bssid[5]; 1423 buf[1] = res->qual & 0xff; 1424 buf[2] = res->noise & 0xff; 1425 buf[3] = res->level & 0xff; 1426 buf[4] = res->tsf & 0xff; 1427 random_add_randomness(buf, sizeof(buf)); 1428 } 1429 #endif /* CONFIG_NO_RANDOM_POOL */ 1430 1431 if (own_request && wpa_s->scan_res_handler && 1432 (wpa_s->own_scan_running || !wpa_s->radio->external_scan_running)) { 1433 void (*scan_res_handler)(struct wpa_supplicant *wpa_s, 1434 struct wpa_scan_results *scan_res); 1435 1436 scan_res_handler = wpa_s->scan_res_handler; 1437 wpa_s->scan_res_handler = NULL; 1438 scan_res_handler(wpa_s, scan_res); 1439 ret = -2; 1440 goto scan_work_done; 1441 } 1442 1443 if (ap) { 1444 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode"); 1445 #ifdef CONFIG_AP 1446 if (wpa_s->ap_iface->scan_cb) 1447 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface); 1448 #endif /* CONFIG_AP */ 1449 goto scan_work_done; 1450 } 1451 1452 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)", 1453 wpa_s->own_scan_running, wpa_s->radio->external_scan_running); 1454 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && 1455 wpa_s->manual_scan_use_id && wpa_s->own_scan_running) { 1456 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u", 1457 wpa_s->manual_scan_id); 1458 wpa_s->manual_scan_use_id = 0; 1459 } else { 1460 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS); 1461 } 1462 wpas_notify_scan_results(wpa_s); 1463 1464 wpas_notify_scan_done(wpa_s, 1); 1465 1466 if (!wpa_s->own_scan_running && wpa_s->radio->external_scan_running) { 1467 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection"); 1468 wpa_scan_results_free(scan_res); 1469 return 0; 1470 } 1471 1472 if (wnm_scan_process(wpa_s, 1) > 0) 1473 goto scan_work_done; 1474 1475 if (sme_proc_obss_scan(wpa_s) > 0) 1476 goto scan_work_done; 1477 1478 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) 1479 goto scan_work_done; 1480 1481 if (autoscan_notify_scan(wpa_s, scan_res)) 1482 goto scan_work_done; 1483 1484 if (wpa_s->disconnected) { 1485 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1486 goto scan_work_done; 1487 } 1488 1489 if (!wpas_driver_bss_selection(wpa_s) && 1490 bgscan_notify_scan(wpa_s, scan_res) == 1) 1491 goto scan_work_done; 1492 1493 wpas_wps_update_ap_info(wpa_s, scan_res); 1494 1495 wpa_scan_results_free(scan_res); 1496 1497 if (wpa_s->scan_work) { 1498 struct wpa_radio_work *work = wpa_s->scan_work; 1499 wpa_s->scan_work = NULL; 1500 radio_work_done(work); 1501 } 1502 1503 return wpas_select_network_from_last_scan(wpa_s, 1, own_request); 1504 1505 scan_work_done: 1506 wpa_scan_results_free(scan_res); 1507 if (wpa_s->scan_work) { 1508 struct wpa_radio_work *work = wpa_s->scan_work; 1509 wpa_s->scan_work = NULL; 1510 radio_work_done(work); 1511 } 1512 return ret; 1513 } 1514 1515 1516 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s, 1517 int new_scan, int own_request) 1518 { 1519 struct wpa_bss *selected; 1520 struct wpa_ssid *ssid = NULL; 1521 int time_to_reenable = wpas_reenabled_network_time(wpa_s); 1522 1523 if (time_to_reenable > 0) { 1524 wpa_dbg(wpa_s, MSG_DEBUG, 1525 "Postpone network selection by %d seconds since all networks are disabled", 1526 time_to_reenable); 1527 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL); 1528 eloop_register_timeout(time_to_reenable, 0, 1529 wpas_network_reenabled, wpa_s, NULL); 1530 return 0; 1531 } 1532 1533 if (wpa_s->p2p_mgmt) 1534 return 0; /* no normal connection on p2p_mgmt interface */ 1535 1536 selected = wpa_supplicant_pick_network(wpa_s, &ssid); 1537 1538 if (selected) { 1539 int skip; 1540 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid); 1541 if (skip) { 1542 if (new_scan) 1543 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 1544 return 0; 1545 } 1546 1547 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) { 1548 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed"); 1549 return -1; 1550 } 1551 if (new_scan) 1552 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 1553 /* 1554 * Do not notify other virtual radios of scan results since we do not 1555 * want them to start other associations at the same time. 1556 */ 1557 return 1; 1558 } else { 1559 #ifdef CONFIG_MESH 1560 if (wpa_s->ifmsh) { 1561 wpa_msg(wpa_s, MSG_INFO, 1562 "Avoiding join because we already joined a mesh group"); 1563 return 0; 1564 } 1565 #endif /* CONFIG_MESH */ 1566 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found"); 1567 ssid = wpa_supplicant_pick_new_network(wpa_s); 1568 if (ssid) { 1569 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network"); 1570 wpa_supplicant_associate(wpa_s, NULL, ssid); 1571 if (new_scan) 1572 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 1573 } else if (own_request) { 1574 /* 1575 * No SSID found. If SCAN results are as a result of 1576 * own scan request and not due to a scan request on 1577 * another shared interface, try another scan. 1578 */ 1579 int timeout_sec = wpa_s->scan_interval; 1580 int timeout_usec = 0; 1581 #ifdef CONFIG_P2P 1582 int res; 1583 1584 res = wpas_p2p_scan_no_go_seen(wpa_s); 1585 if (res == 2) 1586 return 2; 1587 if (res == 1) 1588 return 0; 1589 1590 if (wpa_s->p2p_in_provisioning || 1591 wpa_s->show_group_started || 1592 wpa_s->p2p_in_invitation) { 1593 /* 1594 * Use shorter wait during P2P Provisioning 1595 * state and during P2P join-a-group operation 1596 * to speed up group formation. 1597 */ 1598 timeout_sec = 0; 1599 timeout_usec = 250000; 1600 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1601 timeout_usec); 1602 return 0; 1603 } 1604 #endif /* CONFIG_P2P */ 1605 #ifdef CONFIG_INTERWORKING 1606 if (wpa_s->conf->auto_interworking && 1607 wpa_s->conf->interworking && 1608 wpa_s->conf->cred) { 1609 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: " 1610 "start ANQP fetch since no matching " 1611 "networks found"); 1612 wpa_s->network_select = 1; 1613 wpa_s->auto_network_select = 1; 1614 interworking_start_fetch_anqp(wpa_s); 1615 return 1; 1616 } 1617 #endif /* CONFIG_INTERWORKING */ 1618 #ifdef CONFIG_WPS 1619 if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) { 1620 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing"); 1621 timeout_sec = 0; 1622 timeout_usec = 500000; 1623 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1624 timeout_usec); 1625 return 0; 1626 } 1627 #endif /* CONFIG_WPS */ 1628 if (wpa_supplicant_req_sched_scan(wpa_s)) 1629 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1630 timeout_usec); 1631 1632 wpa_msg_ctrl(wpa_s, MSG_INFO, 1633 WPA_EVENT_NETWORK_NOT_FOUND); 1634 } 1635 } 1636 return 0; 1637 } 1638 1639 1640 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s, 1641 union wpa_event_data *data) 1642 { 1643 struct wpa_supplicant *ifs; 1644 int res; 1645 1646 res = _wpa_supplicant_event_scan_results(wpa_s, data, 1); 1647 if (res == 2) { 1648 /* 1649 * Interface may have been removed, so must not dereference 1650 * wpa_s after this. 1651 */ 1652 return 1; 1653 } 1654 if (res != 0) { 1655 /* 1656 * If no scan results could be fetched, then no need to 1657 * notify those interfaces that did not actually request 1658 * this scan. Similarly, if scan results started a new operation on this 1659 * interface, do not notify other interfaces to avoid concurrent 1660 * operations during a connection attempt. 1661 */ 1662 return 0; 1663 } 1664 1665 /* 1666 * Check other interfaces to see if they share the same radio. If 1667 * so, they get updated with this same scan info. 1668 */ 1669 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 1670 radio_list) { 1671 if (ifs != wpa_s) { 1672 wpa_printf(MSG_DEBUG, "%s: Updating scan results from " 1673 "sibling", ifs->ifname); 1674 _wpa_supplicant_event_scan_results(ifs, data, 0); 1675 } 1676 } 1677 1678 return 0; 1679 } 1680 1681 #endif /* CONFIG_NO_SCAN_PROCESSING */ 1682 1683 1684 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s) 1685 { 1686 #ifdef CONFIG_NO_SCAN_PROCESSING 1687 return -1; 1688 #else /* CONFIG_NO_SCAN_PROCESSING */ 1689 struct os_reltime now; 1690 1691 if (wpa_s->last_scan_res_used == 0) 1692 return -1; 1693 1694 os_get_reltime(&now); 1695 if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) { 1696 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results"); 1697 return -1; 1698 } 1699 1700 return wpas_select_network_from_last_scan(wpa_s, 0, 1); 1701 #endif /* CONFIG_NO_SCAN_PROCESSING */ 1702 } 1703 1704 #ifdef CONFIG_WNM 1705 1706 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx) 1707 { 1708 struct wpa_supplicant *wpa_s = eloop_ctx; 1709 1710 if (wpa_s->wpa_state < WPA_ASSOCIATED) 1711 return; 1712 1713 if (!wpa_s->no_keep_alive) { 1714 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR, 1715 MAC2STR(wpa_s->bssid)); 1716 /* TODO: could skip this if normal data traffic has been sent */ 1717 /* TODO: Consider using some more appropriate data frame for 1718 * this */ 1719 if (wpa_s->l2) 1720 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800, 1721 (u8 *) "", 0); 1722 } 1723 1724 #ifdef CONFIG_SME 1725 if (wpa_s->sme.bss_max_idle_period) { 1726 unsigned int msec; 1727 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */ 1728 if (msec > 100) 1729 msec -= 100; 1730 eloop_register_timeout(msec / 1000, msec % 1000 * 1000, 1731 wnm_bss_keep_alive, wpa_s, NULL); 1732 } 1733 #endif /* CONFIG_SME */ 1734 } 1735 1736 1737 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s, 1738 const u8 *ies, size_t ies_len) 1739 { 1740 struct ieee802_11_elems elems; 1741 1742 if (ies == NULL) 1743 return; 1744 1745 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) 1746 return; 1747 1748 #ifdef CONFIG_SME 1749 if (elems.bss_max_idle_period) { 1750 unsigned int msec; 1751 wpa_s->sme.bss_max_idle_period = 1752 WPA_GET_LE16(elems.bss_max_idle_period); 1753 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 " 1754 "TU)%s", wpa_s->sme.bss_max_idle_period, 1755 (elems.bss_max_idle_period[2] & 0x01) ? 1756 " (protected keep-live required)" : ""); 1757 if (wpa_s->sme.bss_max_idle_period == 0) 1758 wpa_s->sme.bss_max_idle_period = 1; 1759 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) { 1760 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL); 1761 /* msec times 1000 */ 1762 msec = wpa_s->sme.bss_max_idle_period * 1024; 1763 if (msec > 100) 1764 msec -= 100; 1765 eloop_register_timeout(msec / 1000, msec % 1000 * 1000, 1766 wnm_bss_keep_alive, wpa_s, 1767 NULL); 1768 } 1769 } 1770 #endif /* CONFIG_SME */ 1771 } 1772 1773 #endif /* CONFIG_WNM */ 1774 1775 1776 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s) 1777 { 1778 #ifdef CONFIG_WNM 1779 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL); 1780 #endif /* CONFIG_WNM */ 1781 } 1782 1783 1784 #ifdef CONFIG_INTERWORKING 1785 1786 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map, 1787 size_t len) 1788 { 1789 int res; 1790 1791 wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len); 1792 res = wpa_drv_set_qos_map(wpa_s, qos_map, len); 1793 if (res) { 1794 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver"); 1795 } 1796 1797 return res; 1798 } 1799 1800 1801 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s, 1802 const u8 *ies, size_t ies_len) 1803 { 1804 struct ieee802_11_elems elems; 1805 1806 if (ies == NULL) 1807 return; 1808 1809 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) 1810 return; 1811 1812 if (elems.qos_map_set) { 1813 wpas_qos_map_set(wpa_s, elems.qos_map_set, 1814 elems.qos_map_set_len); 1815 } 1816 } 1817 1818 #endif /* CONFIG_INTERWORKING */ 1819 1820 1821 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s, 1822 union wpa_event_data *data) 1823 { 1824 int l, len, found = 0, wpa_found, rsn_found; 1825 const u8 *p; 1826 #ifdef CONFIG_IEEE80211R 1827 u8 bssid[ETH_ALEN]; 1828 #endif /* CONFIG_IEEE80211R */ 1829 1830 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event"); 1831 if (data->assoc_info.req_ies) 1832 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies, 1833 data->assoc_info.req_ies_len); 1834 if (data->assoc_info.resp_ies) { 1835 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies, 1836 data->assoc_info.resp_ies_len); 1837 #ifdef CONFIG_TDLS 1838 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies, 1839 data->assoc_info.resp_ies_len); 1840 #endif /* CONFIG_TDLS */ 1841 #ifdef CONFIG_WNM 1842 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies, 1843 data->assoc_info.resp_ies_len); 1844 #endif /* CONFIG_WNM */ 1845 #ifdef CONFIG_INTERWORKING 1846 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies, 1847 data->assoc_info.resp_ies_len); 1848 #endif /* CONFIG_INTERWORKING */ 1849 } 1850 if (data->assoc_info.beacon_ies) 1851 wpa_hexdump(MSG_DEBUG, "beacon_ies", 1852 data->assoc_info.beacon_ies, 1853 data->assoc_info.beacon_ies_len); 1854 if (data->assoc_info.freq) 1855 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz", 1856 data->assoc_info.freq); 1857 1858 p = data->assoc_info.req_ies; 1859 l = data->assoc_info.req_ies_len; 1860 1861 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */ 1862 while (p && l >= 2) { 1863 len = p[1] + 2; 1864 if (len > l) { 1865 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info", 1866 p, l); 1867 break; 1868 } 1869 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 && 1870 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) || 1871 (p[0] == WLAN_EID_RSN && p[1] >= 2)) { 1872 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len)) 1873 break; 1874 found = 1; 1875 wpa_find_assoc_pmkid(wpa_s); 1876 break; 1877 } 1878 l -= len; 1879 p += len; 1880 } 1881 if (!found && data->assoc_info.req_ies) 1882 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 1883 1884 #ifdef CONFIG_IEEE80211R 1885 #ifdef CONFIG_SME 1886 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) { 1887 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 || 1888 wpa_ft_validate_reassoc_resp(wpa_s->wpa, 1889 data->assoc_info.resp_ies, 1890 data->assoc_info.resp_ies_len, 1891 bssid) < 0) { 1892 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of " 1893 "Reassociation Response failed"); 1894 wpa_supplicant_deauthenticate( 1895 wpa_s, WLAN_REASON_INVALID_IE); 1896 return -1; 1897 } 1898 } 1899 1900 p = data->assoc_info.resp_ies; 1901 l = data->assoc_info.resp_ies_len; 1902 1903 #ifdef CONFIG_WPS_STRICT 1904 if (p && wpa_s->current_ssid && 1905 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) { 1906 struct wpabuf *wps; 1907 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE); 1908 if (wps == NULL) { 1909 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not " 1910 "include WPS IE in (Re)Association Response"); 1911 return -1; 1912 } 1913 1914 if (wps_validate_assoc_resp(wps) < 0) { 1915 wpabuf_free(wps); 1916 wpa_supplicant_deauthenticate( 1917 wpa_s, WLAN_REASON_INVALID_IE); 1918 return -1; 1919 } 1920 wpabuf_free(wps); 1921 } 1922 #endif /* CONFIG_WPS_STRICT */ 1923 1924 /* Go through the IEs and make a copy of the MDIE, if present. */ 1925 while (p && l >= 2) { 1926 len = p[1] + 2; 1927 if (len > l) { 1928 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info", 1929 p, l); 1930 break; 1931 } 1932 if (p[0] == WLAN_EID_MOBILITY_DOMAIN && 1933 p[1] >= MOBILITY_DOMAIN_ID_LEN) { 1934 wpa_s->sme.ft_used = 1; 1935 os_memcpy(wpa_s->sme.mobility_domain, p + 2, 1936 MOBILITY_DOMAIN_ID_LEN); 1937 break; 1938 } 1939 l -= len; 1940 p += len; 1941 } 1942 #endif /* CONFIG_SME */ 1943 1944 /* Process FT when SME is in the driver */ 1945 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) && 1946 wpa_ft_is_completed(wpa_s->wpa)) { 1947 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 || 1948 wpa_ft_validate_reassoc_resp(wpa_s->wpa, 1949 data->assoc_info.resp_ies, 1950 data->assoc_info.resp_ies_len, 1951 bssid) < 0) { 1952 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of " 1953 "Reassociation Response failed"); 1954 wpa_supplicant_deauthenticate( 1955 wpa_s, WLAN_REASON_INVALID_IE); 1956 return -1; 1957 } 1958 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done"); 1959 } 1960 1961 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies, 1962 data->assoc_info.resp_ies_len); 1963 #endif /* CONFIG_IEEE80211R */ 1964 1965 /* WPA/RSN IE from Beacon/ProbeResp */ 1966 p = data->assoc_info.beacon_ies; 1967 l = data->assoc_info.beacon_ies_len; 1968 1969 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present. 1970 */ 1971 wpa_found = rsn_found = 0; 1972 while (p && l >= 2) { 1973 len = p[1] + 2; 1974 if (len > l) { 1975 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies", 1976 p, l); 1977 break; 1978 } 1979 if (!wpa_found && 1980 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 && 1981 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) { 1982 wpa_found = 1; 1983 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len); 1984 } 1985 1986 if (!rsn_found && 1987 p[0] == WLAN_EID_RSN && p[1] >= 2) { 1988 rsn_found = 1; 1989 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len); 1990 } 1991 1992 l -= len; 1993 p += len; 1994 } 1995 1996 if (!wpa_found && data->assoc_info.beacon_ies) 1997 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0); 1998 if (!rsn_found && data->assoc_info.beacon_ies) 1999 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0); 2000 if (wpa_found || rsn_found) 2001 wpa_s->ap_ies_from_associnfo = 1; 2002 2003 if (wpa_s->assoc_freq && data->assoc_info.freq && 2004 wpa_s->assoc_freq != data->assoc_info.freq) { 2005 wpa_printf(MSG_DEBUG, "Operating frequency changed from " 2006 "%u to %u MHz", 2007 wpa_s->assoc_freq, data->assoc_info.freq); 2008 wpa_supplicant_update_scan_results(wpa_s); 2009 } 2010 2011 wpa_s->assoc_freq = data->assoc_info.freq; 2012 2013 return 0; 2014 } 2015 2016 2017 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s) 2018 { 2019 const u8 *bss_wpa = NULL, *bss_rsn = NULL; 2020 2021 if (!wpa_s->current_bss || !wpa_s->current_ssid) 2022 return -1; 2023 2024 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt)) 2025 return 0; 2026 2027 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss, 2028 WPA_IE_VENDOR_TYPE); 2029 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN); 2030 2031 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa, 2032 bss_wpa ? 2 + bss_wpa[1] : 0) || 2033 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn, 2034 bss_rsn ? 2 + bss_rsn[1] : 0)) 2035 return -1; 2036 2037 return 0; 2038 } 2039 2040 2041 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s, 2042 union wpa_event_data *data) 2043 { 2044 u8 bssid[ETH_ALEN]; 2045 int ft_completed; 2046 2047 #ifdef CONFIG_AP 2048 if (wpa_s->ap_iface) { 2049 if (!data) 2050 return; 2051 hostapd_notif_assoc(wpa_s->ap_iface->bss[0], 2052 data->assoc_info.addr, 2053 data->assoc_info.req_ies, 2054 data->assoc_info.req_ies_len, 2055 data->assoc_info.reassoc); 2056 return; 2057 } 2058 #endif /* CONFIG_AP */ 2059 2060 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL); 2061 2062 ft_completed = wpa_ft_is_completed(wpa_s->wpa); 2063 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0) 2064 return; 2065 2066 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) { 2067 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID"); 2068 wpa_supplicant_deauthenticate( 2069 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2070 return; 2071 } 2072 2073 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED); 2074 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) { 2075 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID=" 2076 MACSTR, MAC2STR(bssid)); 2077 random_add_randomness(bssid, ETH_ALEN); 2078 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN); 2079 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 2080 wpas_notify_bssid_changed(wpa_s); 2081 2082 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) { 2083 wpa_clear_keys(wpa_s, bssid); 2084 } 2085 if (wpa_supplicant_select_config(wpa_s) < 0) { 2086 wpa_supplicant_deauthenticate( 2087 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2088 return; 2089 } 2090 2091 #ifdef ANDROID 2092 if (wpa_s->conf->ap_scan == 1) { 2093 #else 2094 if (wpa_s->conf->ap_scan == 1 && 2095 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) { 2096 #endif 2097 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0) 2098 wpa_msg(wpa_s, MSG_WARNING, 2099 "WPA/RSN IEs not updated"); 2100 } 2101 } 2102 2103 #ifdef CONFIG_SME 2104 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN); 2105 wpa_s->sme.prev_bssid_set = 1; 2106 wpa_s->sme.last_unprot_disconnect.sec = 0; 2107 #endif /* CONFIG_SME */ 2108 2109 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid)); 2110 if (wpa_s->current_ssid) { 2111 /* When using scanning (ap_scan=1), SIM PC/SC interface can be 2112 * initialized before association, but for other modes, 2113 * initialize PC/SC here, if the current configuration needs 2114 * smartcard or SIM/USIM. */ 2115 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid); 2116 } 2117 wpa_sm_notify_assoc(wpa_s->wpa, bssid); 2118 if (wpa_s->l2) 2119 l2_packet_notify_auth_start(wpa_s->l2); 2120 2121 /* 2122 * Set portEnabled first to FALSE in order to get EAP state machine out 2123 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE 2124 * state machine may transit to AUTHENTICATING state based on obsolete 2125 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to 2126 * AUTHENTICATED without ever giving chance to EAP state machine to 2127 * reset the state. 2128 */ 2129 if (!ft_completed) { 2130 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 2131 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 2132 } 2133 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed) 2134 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 2135 /* 802.1X::portControl = Auto */ 2136 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE); 2137 wpa_s->eapol_received = 0; 2138 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 2139 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE || 2140 (wpa_s->current_ssid && 2141 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) { 2142 if (wpa_s->current_ssid && 2143 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE && 2144 (wpa_s->drv_flags & 2145 WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) { 2146 /* 2147 * Set the key after having received joined-IBSS event 2148 * from the driver. 2149 */ 2150 wpa_supplicant_set_wpa_none_key(wpa_s, 2151 wpa_s->current_ssid); 2152 } 2153 wpa_supplicant_cancel_auth_timeout(wpa_s); 2154 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2155 } else if (!ft_completed) { 2156 /* Timeout for receiving the first EAPOL packet */ 2157 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0); 2158 } 2159 wpa_supplicant_cancel_scan(wpa_s); 2160 2161 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 2162 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { 2163 /* 2164 * We are done; the driver will take care of RSN 4-way 2165 * handshake. 2166 */ 2167 wpa_supplicant_cancel_auth_timeout(wpa_s); 2168 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2169 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2170 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 2171 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 2172 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) { 2173 /* 2174 * The driver will take care of RSN 4-way handshake, so we need 2175 * to allow EAPOL supplicant to complete its work without 2176 * waiting for WPA supplicant. 2177 */ 2178 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2179 } else if (ft_completed) { 2180 /* 2181 * FT protocol completed - make sure EAPOL state machine ends 2182 * up in authenticated. 2183 */ 2184 wpa_supplicant_cancel_auth_timeout(wpa_s); 2185 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2186 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2187 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 2188 } 2189 2190 wpa_s->last_eapol_matches_bssid = 0; 2191 2192 if (wpa_s->pending_eapol_rx) { 2193 struct os_reltime now, age; 2194 os_get_reltime(&now); 2195 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age); 2196 if (age.sec == 0 && age.usec < 100000 && 2197 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) == 2198 0) { 2199 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL " 2200 "frame that was received just before " 2201 "association notification"); 2202 wpa_supplicant_rx_eapol( 2203 wpa_s, wpa_s->pending_eapol_rx_src, 2204 wpabuf_head(wpa_s->pending_eapol_rx), 2205 wpabuf_len(wpa_s->pending_eapol_rx)); 2206 } 2207 wpabuf_free(wpa_s->pending_eapol_rx); 2208 wpa_s->pending_eapol_rx = NULL; 2209 } 2210 2211 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 2212 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 2213 wpa_s->current_ssid && 2214 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) { 2215 /* Set static WEP keys again */ 2216 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid); 2217 } 2218 2219 #ifdef CONFIG_IBSS_RSN 2220 if (wpa_s->current_ssid && 2221 wpa_s->current_ssid->mode == WPAS_MODE_IBSS && 2222 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 2223 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE && 2224 wpa_s->ibss_rsn == NULL) { 2225 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s); 2226 if (!wpa_s->ibss_rsn) { 2227 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN"); 2228 wpa_supplicant_deauthenticate( 2229 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2230 return; 2231 } 2232 2233 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk); 2234 } 2235 #endif /* CONFIG_IBSS_RSN */ 2236 2237 wpas_wps_notify_assoc(wpa_s, bssid); 2238 2239 if (data) { 2240 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies, 2241 data->assoc_info.resp_ies_len, 2242 &data->assoc_info.wmm_params); 2243 2244 if (wpa_s->reassoc_same_bss) 2245 wmm_ac_restore_tspecs(wpa_s); 2246 } 2247 } 2248 2249 2250 static int disconnect_reason_recoverable(u16 reason_code) 2251 { 2252 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY || 2253 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA || 2254 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA; 2255 } 2256 2257 2258 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s, 2259 u16 reason_code, 2260 int locally_generated) 2261 { 2262 const u8 *bssid; 2263 2264 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 2265 /* 2266 * At least Host AP driver and a Prism3 card seemed to be 2267 * generating streams of disconnected events when configuring 2268 * IBSS for WPA-None. Ignore them for now. 2269 */ 2270 return; 2271 } 2272 2273 bssid = wpa_s->bssid; 2274 if (is_zero_ether_addr(bssid)) 2275 bssid = wpa_s->pending_bssid; 2276 2277 if (!is_zero_ether_addr(bssid) || 2278 wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2279 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR 2280 " reason=%d%s", 2281 MAC2STR(bssid), reason_code, 2282 locally_generated ? " locally_generated=1" : ""); 2283 } 2284 } 2285 2286 2287 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code, 2288 int locally_generated) 2289 { 2290 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE || 2291 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) 2292 return 0; /* Not in 4-way handshake with PSK */ 2293 2294 /* 2295 * It looks like connection was lost while trying to go through PSK 2296 * 4-way handshake. Filter out known disconnection cases that are caused 2297 * by something else than PSK mismatch to avoid confusing reports. 2298 */ 2299 2300 if (locally_generated) { 2301 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS) 2302 return 0; 2303 } 2304 2305 return 1; 2306 } 2307 2308 2309 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s, 2310 u16 reason_code, 2311 int locally_generated) 2312 { 2313 const u8 *bssid; 2314 int authenticating; 2315 u8 prev_pending_bssid[ETH_ALEN]; 2316 struct wpa_bss *fast_reconnect = NULL; 2317 struct wpa_ssid *fast_reconnect_ssid = NULL; 2318 struct wpa_ssid *last_ssid; 2319 2320 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING; 2321 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN); 2322 2323 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 2324 /* 2325 * At least Host AP driver and a Prism3 card seemed to be 2326 * generating streams of disconnected events when configuring 2327 * IBSS for WPA-None. Ignore them for now. 2328 */ 2329 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in " 2330 "IBSS/WPA-None mode"); 2331 return; 2332 } 2333 2334 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) { 2335 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - " 2336 "pre-shared key may be incorrect"); 2337 if (wpas_p2p_4way_hs_failed(wpa_s) > 0) 2338 return; /* P2P group removed */ 2339 wpas_auth_failed(wpa_s, "WRONG_KEY"); 2340 } 2341 if (!wpa_s->disconnected && 2342 (!wpa_s->auto_reconnect_disabled || 2343 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS || 2344 wpas_wps_searching(wpa_s))) { 2345 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to " 2346 "reconnect (wps=%d/%d wpa_state=%d)", 2347 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS, 2348 wpas_wps_searching(wpa_s), 2349 wpa_s->wpa_state); 2350 if (wpa_s->wpa_state == WPA_COMPLETED && 2351 wpa_s->current_ssid && 2352 wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 2353 !locally_generated && 2354 disconnect_reason_recoverable(reason_code)) { 2355 /* 2356 * It looks like the AP has dropped association with 2357 * us, but could allow us to get back in. Try to 2358 * reconnect to the same BSS without full scan to save 2359 * time for some common cases. 2360 */ 2361 fast_reconnect = wpa_s->current_bss; 2362 fast_reconnect_ssid = wpa_s->current_ssid; 2363 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING) 2364 wpa_supplicant_req_scan(wpa_s, 0, 100000); 2365 else 2366 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new " 2367 "immediate scan"); 2368 } else { 2369 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not " 2370 "try to re-connect"); 2371 wpa_s->reassociate = 0; 2372 wpa_s->disconnected = 1; 2373 wpa_supplicant_cancel_sched_scan(wpa_s); 2374 } 2375 bssid = wpa_s->bssid; 2376 if (is_zero_ether_addr(bssid)) 2377 bssid = wpa_s->pending_bssid; 2378 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 2379 wpas_connection_failed(wpa_s, bssid); 2380 wpa_sm_notify_disassoc(wpa_s->wpa); 2381 if (locally_generated) 2382 wpa_s->disconnect_reason = -reason_code; 2383 else 2384 wpa_s->disconnect_reason = reason_code; 2385 wpas_notify_disconnect_reason(wpa_s); 2386 if (wpa_supplicant_dynamic_keys(wpa_s)) { 2387 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys"); 2388 wpa_clear_keys(wpa_s, wpa_s->bssid); 2389 } 2390 last_ssid = wpa_s->current_ssid; 2391 wpa_supplicant_mark_disassoc(wpa_s); 2392 2393 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) { 2394 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid); 2395 wpa_s->current_ssid = last_ssid; 2396 } 2397 2398 if (fast_reconnect && 2399 !wpas_network_disabled(wpa_s, fast_reconnect_ssid) && 2400 !disallowed_bssid(wpa_s, fast_reconnect->bssid) && 2401 !disallowed_ssid(wpa_s, fast_reconnect->ssid, 2402 fast_reconnect->ssid_len) && 2403 !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) { 2404 #ifndef CONFIG_NO_SCAN_PROCESSING 2405 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS"); 2406 if (wpa_supplicant_connect(wpa_s, fast_reconnect, 2407 fast_reconnect_ssid) < 0) { 2408 /* Recover through full scan */ 2409 wpa_supplicant_req_scan(wpa_s, 0, 100000); 2410 } 2411 #endif /* CONFIG_NO_SCAN_PROCESSING */ 2412 } else if (fast_reconnect) { 2413 /* 2414 * Could not reconnect to the same BSS due to network being 2415 * disabled. Use a new scan to match the alternative behavior 2416 * above, i.e., to continue automatic reconnection attempt in a 2417 * way that enforces disabled network rules. 2418 */ 2419 wpa_supplicant_req_scan(wpa_s, 0, 100000); 2420 } 2421 } 2422 2423 2424 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 2425 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx) 2426 { 2427 struct wpa_supplicant *wpa_s = eloop_ctx; 2428 2429 if (!wpa_s->pending_mic_error_report) 2430 return; 2431 2432 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report"); 2433 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise); 2434 wpa_s->pending_mic_error_report = 0; 2435 } 2436 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 2437 2438 2439 static void 2440 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s, 2441 union wpa_event_data *data) 2442 { 2443 int pairwise; 2444 struct os_reltime t; 2445 2446 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected"); 2447 pairwise = (data && data->michael_mic_failure.unicast); 2448 os_get_reltime(&t); 2449 if ((wpa_s->last_michael_mic_error.sec && 2450 !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) || 2451 wpa_s->pending_mic_error_report) { 2452 if (wpa_s->pending_mic_error_report) { 2453 /* 2454 * Send the pending MIC error report immediately since 2455 * we are going to start countermeasures and AP better 2456 * do the same. 2457 */ 2458 wpa_sm_key_request(wpa_s->wpa, 1, 2459 wpa_s->pending_mic_error_pairwise); 2460 } 2461 2462 /* Send the new MIC error report immediately since we are going 2463 * to start countermeasures and AP better do the same. 2464 */ 2465 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 2466 2467 /* initialize countermeasures */ 2468 wpa_s->countermeasures = 1; 2469 2470 wpa_blacklist_add(wpa_s, wpa_s->bssid); 2471 2472 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started"); 2473 2474 /* 2475 * Need to wait for completion of request frame. We do not get 2476 * any callback for the message completion, so just wait a 2477 * short while and hope for the best. */ 2478 os_sleep(0, 10000); 2479 2480 wpa_drv_set_countermeasures(wpa_s, 1); 2481 wpa_supplicant_deauthenticate(wpa_s, 2482 WLAN_REASON_MICHAEL_MIC_FAILURE); 2483 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, 2484 wpa_s, NULL); 2485 eloop_register_timeout(60, 0, 2486 wpa_supplicant_stop_countermeasures, 2487 wpa_s, NULL); 2488 /* TODO: mark the AP rejected for 60 second. STA is 2489 * allowed to associate with another AP.. */ 2490 } else { 2491 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 2492 if (wpa_s->mic_errors_seen) { 2493 /* 2494 * Reduce the effectiveness of Michael MIC error 2495 * reports as a means for attacking against TKIP if 2496 * more than one MIC failure is noticed with the same 2497 * PTK. We delay the transmission of the reports by a 2498 * random time between 0 and 60 seconds in order to 2499 * force the attacker wait 60 seconds before getting 2500 * the information on whether a frame resulted in a MIC 2501 * failure. 2502 */ 2503 u8 rval[4]; 2504 int sec; 2505 2506 if (os_get_random(rval, sizeof(rval)) < 0) 2507 sec = os_random() % 60; 2508 else 2509 sec = WPA_GET_BE32(rval) % 60; 2510 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error " 2511 "report %d seconds", sec); 2512 wpa_s->pending_mic_error_report = 1; 2513 wpa_s->pending_mic_error_pairwise = pairwise; 2514 eloop_cancel_timeout( 2515 wpa_supplicant_delayed_mic_error_report, 2516 wpa_s, NULL); 2517 eloop_register_timeout( 2518 sec, os_random() % 1000000, 2519 wpa_supplicant_delayed_mic_error_report, 2520 wpa_s, NULL); 2521 } else { 2522 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 2523 } 2524 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 2525 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 2526 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 2527 } 2528 wpa_s->last_michael_mic_error = t; 2529 wpa_s->mic_errors_seen++; 2530 } 2531 2532 2533 #ifdef CONFIG_TERMINATE_ONLASTIF 2534 static int any_interfaces(struct wpa_supplicant *head) 2535 { 2536 struct wpa_supplicant *wpa_s; 2537 2538 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next) 2539 if (!wpa_s->interface_removed) 2540 return 1; 2541 return 0; 2542 } 2543 #endif /* CONFIG_TERMINATE_ONLASTIF */ 2544 2545 2546 static void 2547 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s, 2548 union wpa_event_data *data) 2549 { 2550 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0) 2551 return; 2552 2553 switch (data->interface_status.ievent) { 2554 case EVENT_INTERFACE_ADDED: 2555 if (!wpa_s->interface_removed) 2556 break; 2557 wpa_s->interface_removed = 0; 2558 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added"); 2559 if (wpa_supplicant_driver_init(wpa_s) < 0) { 2560 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the " 2561 "driver after interface was added"); 2562 } 2563 2564 #ifdef CONFIG_P2P 2565 if (!wpa_s->global->p2p && 2566 !wpa_s->global->p2p_disabled && 2567 !wpa_s->conf->p2p_disabled && 2568 (wpa_s->drv_flags & 2569 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) && 2570 wpas_p2p_add_p2pdev_interface( 2571 wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) { 2572 wpa_printf(MSG_INFO, 2573 "P2P: Failed to enable P2P Device interface"); 2574 /* Try to continue without. P2P will be disabled. */ 2575 } 2576 #endif /* CONFIG_P2P */ 2577 2578 break; 2579 case EVENT_INTERFACE_REMOVED: 2580 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed"); 2581 wpa_s->interface_removed = 1; 2582 wpa_supplicant_mark_disassoc(wpa_s); 2583 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 2584 l2_packet_deinit(wpa_s->l2); 2585 wpa_s->l2 = NULL; 2586 2587 #ifdef CONFIG_P2P 2588 if (wpa_s->global->p2p && 2589 wpa_s->global->p2p_init_wpa_s->parent == wpa_s && 2590 (wpa_s->drv_flags & 2591 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) { 2592 wpa_dbg(wpa_s, MSG_DEBUG, 2593 "Removing P2P Device interface"); 2594 wpa_supplicant_remove_iface( 2595 wpa_s->global, wpa_s->global->p2p_init_wpa_s, 2596 0); 2597 wpa_s->global->p2p_init_wpa_s = NULL; 2598 } 2599 #endif /* CONFIG_P2P */ 2600 2601 #ifdef CONFIG_TERMINATE_ONLASTIF 2602 /* check if last interface */ 2603 if (!any_interfaces(wpa_s->global->ifaces)) 2604 eloop_terminate(); 2605 #endif /* CONFIG_TERMINATE_ONLASTIF */ 2606 break; 2607 } 2608 } 2609 2610 2611 #ifdef CONFIG_PEERKEY 2612 static void 2613 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s, 2614 union wpa_event_data *data) 2615 { 2616 if (data == NULL) 2617 return; 2618 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer); 2619 } 2620 #endif /* CONFIG_PEERKEY */ 2621 2622 2623 #ifdef CONFIG_TDLS 2624 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s, 2625 union wpa_event_data *data) 2626 { 2627 if (data == NULL) 2628 return; 2629 switch (data->tdls.oper) { 2630 case TDLS_REQUEST_SETUP: 2631 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer); 2632 if (wpa_tdls_is_external_setup(wpa_s->wpa)) 2633 wpa_tdls_start(wpa_s->wpa, data->tdls.peer); 2634 else 2635 wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer); 2636 break; 2637 case TDLS_REQUEST_TEARDOWN: 2638 if (wpa_tdls_is_external_setup(wpa_s->wpa)) 2639 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer, 2640 data->tdls.reason_code); 2641 else 2642 wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN, 2643 data->tdls.peer); 2644 break; 2645 case TDLS_REQUEST_DISCOVER: 2646 wpa_tdls_send_discovery_request(wpa_s->wpa, 2647 data->tdls.peer); 2648 break; 2649 } 2650 } 2651 #endif /* CONFIG_TDLS */ 2652 2653 2654 #ifdef CONFIG_WNM 2655 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s, 2656 union wpa_event_data *data) 2657 { 2658 if (data == NULL) 2659 return; 2660 switch (data->wnm.oper) { 2661 case WNM_OPER_SLEEP: 2662 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request " 2663 "(action=%d, intval=%d)", 2664 data->wnm.sleep_action, data->wnm.sleep_intval); 2665 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action, 2666 data->wnm.sleep_intval, NULL); 2667 break; 2668 } 2669 } 2670 #endif /* CONFIG_WNM */ 2671 2672 2673 #ifdef CONFIG_IEEE80211R 2674 static void 2675 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s, 2676 union wpa_event_data *data) 2677 { 2678 if (data == NULL) 2679 return; 2680 2681 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies, 2682 data->ft_ies.ies_len, 2683 data->ft_ies.ft_action, 2684 data->ft_ies.target_ap, 2685 data->ft_ies.ric_ies, 2686 data->ft_ies.ric_ies_len) < 0) { 2687 /* TODO: prevent MLME/driver from trying to associate? */ 2688 } 2689 } 2690 #endif /* CONFIG_IEEE80211R */ 2691 2692 2693 #ifdef CONFIG_IBSS_RSN 2694 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s, 2695 union wpa_event_data *data) 2696 { 2697 struct wpa_ssid *ssid; 2698 if (wpa_s->wpa_state < WPA_ASSOCIATED) 2699 return; 2700 if (data == NULL) 2701 return; 2702 ssid = wpa_s->current_ssid; 2703 if (ssid == NULL) 2704 return; 2705 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt)) 2706 return; 2707 2708 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer); 2709 } 2710 2711 2712 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s, 2713 union wpa_event_data *data) 2714 { 2715 struct wpa_ssid *ssid = wpa_s->current_ssid; 2716 2717 if (ssid == NULL) 2718 return; 2719 2720 /* check if the ssid is correctly configured as IBSS/RSN */ 2721 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt)) 2722 return; 2723 2724 ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame, 2725 data->rx_mgmt.frame_len); 2726 } 2727 #endif /* CONFIG_IBSS_RSN */ 2728 2729 2730 #ifdef CONFIG_IEEE80211R 2731 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data, 2732 size_t len) 2733 { 2734 const u8 *sta_addr, *target_ap_addr; 2735 u16 status; 2736 2737 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len); 2738 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) 2739 return; /* only SME case supported for now */ 2740 if (len < 1 + 2 * ETH_ALEN + 2) 2741 return; 2742 if (data[0] != 2) 2743 return; /* Only FT Action Response is supported for now */ 2744 sta_addr = data + 1; 2745 target_ap_addr = data + 1 + ETH_ALEN; 2746 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN); 2747 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA " 2748 MACSTR " TargetAP " MACSTR " status %u", 2749 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status); 2750 2751 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) { 2752 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR 2753 " in FT Action Response", MAC2STR(sta_addr)); 2754 return; 2755 } 2756 2757 if (status) { 2758 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates " 2759 "failure (status code %d)", status); 2760 /* TODO: report error to FT code(?) */ 2761 return; 2762 } 2763 2764 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2, 2765 len - (1 + 2 * ETH_ALEN + 2), 1, 2766 target_ap_addr, NULL, 0) < 0) 2767 return; 2768 2769 #ifdef CONFIG_SME 2770 { 2771 struct wpa_bss *bss; 2772 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr); 2773 if (bss) 2774 wpa_s->sme.freq = bss->freq; 2775 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT; 2776 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr, 2777 WLAN_AUTH_FT); 2778 } 2779 #endif /* CONFIG_SME */ 2780 } 2781 #endif /* CONFIG_IEEE80211R */ 2782 2783 2784 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s, 2785 struct unprot_deauth *e) 2786 { 2787 #ifdef CONFIG_IEEE80211W 2788 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame " 2789 "dropped: " MACSTR " -> " MACSTR 2790 " (reason code %u)", 2791 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code); 2792 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code); 2793 #endif /* CONFIG_IEEE80211W */ 2794 } 2795 2796 2797 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s, 2798 struct unprot_disassoc *e) 2799 { 2800 #ifdef CONFIG_IEEE80211W 2801 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame " 2802 "dropped: " MACSTR " -> " MACSTR 2803 " (reason code %u)", 2804 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code); 2805 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code); 2806 #endif /* CONFIG_IEEE80211W */ 2807 } 2808 2809 2810 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr, 2811 u16 reason_code, int locally_generated, 2812 const u8 *ie, size_t ie_len, int deauth) 2813 { 2814 #ifdef CONFIG_AP 2815 if (wpa_s->ap_iface && addr) { 2816 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr); 2817 return; 2818 } 2819 2820 if (wpa_s->ap_iface) { 2821 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode"); 2822 return; 2823 } 2824 #endif /* CONFIG_AP */ 2825 2826 if (!locally_generated) 2827 wpa_s->own_disconnect_req = 0; 2828 2829 wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated); 2830 2831 if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED || 2832 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) || 2833 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) && 2834 eapol_sm_failed(wpa_s->eapol))) && 2835 !wpa_s->eap_expected_failure)) 2836 wpas_auth_failed(wpa_s, "AUTH_FAILED"); 2837 2838 #ifdef CONFIG_P2P 2839 if (deauth && reason_code > 0) { 2840 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len, 2841 locally_generated) > 0) { 2842 /* 2843 * The interface was removed, so cannot continue 2844 * processing any additional operations after this. 2845 */ 2846 return; 2847 } 2848 } 2849 #endif /* CONFIG_P2P */ 2850 2851 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code, 2852 locally_generated); 2853 } 2854 2855 2856 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s, 2857 struct disassoc_info *info) 2858 { 2859 u16 reason_code = 0; 2860 int locally_generated = 0; 2861 const u8 *addr = NULL; 2862 const u8 *ie = NULL; 2863 size_t ie_len = 0; 2864 2865 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification"); 2866 2867 if (info) { 2868 addr = info->addr; 2869 ie = info->ie; 2870 ie_len = info->ie_len; 2871 reason_code = info->reason_code; 2872 locally_generated = info->locally_generated; 2873 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code, 2874 locally_generated ? " (locally generated)" : ""); 2875 if (addr) 2876 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR, 2877 MAC2STR(addr)); 2878 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)", 2879 ie, ie_len); 2880 } 2881 2882 #ifdef CONFIG_AP 2883 if (wpa_s->ap_iface && info && info->addr) { 2884 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr); 2885 return; 2886 } 2887 2888 if (wpa_s->ap_iface) { 2889 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode"); 2890 return; 2891 } 2892 #endif /* CONFIG_AP */ 2893 2894 #ifdef CONFIG_P2P 2895 if (info) { 2896 wpas_p2p_disassoc_notif( 2897 wpa_s, info->addr, reason_code, info->ie, info->ie_len, 2898 locally_generated); 2899 } 2900 #endif /* CONFIG_P2P */ 2901 2902 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 2903 sme_event_disassoc(wpa_s, info); 2904 2905 wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated, 2906 ie, ie_len, 0); 2907 } 2908 2909 2910 static void wpas_event_deauth(struct wpa_supplicant *wpa_s, 2911 struct deauth_info *info) 2912 { 2913 u16 reason_code = 0; 2914 int locally_generated = 0; 2915 const u8 *addr = NULL; 2916 const u8 *ie = NULL; 2917 size_t ie_len = 0; 2918 2919 wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification"); 2920 2921 if (info) { 2922 addr = info->addr; 2923 ie = info->ie; 2924 ie_len = info->ie_len; 2925 reason_code = info->reason_code; 2926 locally_generated = info->locally_generated; 2927 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", 2928 reason_code, 2929 locally_generated ? " (locally generated)" : ""); 2930 if (addr) { 2931 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR, 2932 MAC2STR(addr)); 2933 } 2934 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)", 2935 ie, ie_len); 2936 } 2937 2938 wpa_reset_ft_completed(wpa_s->wpa); 2939 2940 wpas_event_disconnect(wpa_s, addr, reason_code, 2941 locally_generated, ie, ie_len, 1); 2942 } 2943 2944 2945 static const char * reg_init_str(enum reg_change_initiator init) 2946 { 2947 switch (init) { 2948 case REGDOM_SET_BY_CORE: 2949 return "CORE"; 2950 case REGDOM_SET_BY_USER: 2951 return "USER"; 2952 case REGDOM_SET_BY_DRIVER: 2953 return "DRIVER"; 2954 case REGDOM_SET_BY_COUNTRY_IE: 2955 return "COUNTRY_IE"; 2956 case REGDOM_BEACON_HINT: 2957 return "BEACON_HINT"; 2958 } 2959 return "?"; 2960 } 2961 2962 2963 static const char * reg_type_str(enum reg_type type) 2964 { 2965 switch (type) { 2966 case REGDOM_TYPE_UNKNOWN: 2967 return "UNKNOWN"; 2968 case REGDOM_TYPE_COUNTRY: 2969 return "COUNTRY"; 2970 case REGDOM_TYPE_WORLD: 2971 return "WORLD"; 2972 case REGDOM_TYPE_CUSTOM_WORLD: 2973 return "CUSTOM_WORLD"; 2974 case REGDOM_TYPE_INTERSECTION: 2975 return "INTERSECTION"; 2976 } 2977 return "?"; 2978 } 2979 2980 2981 static void wpa_supplicant_update_channel_list( 2982 struct wpa_supplicant *wpa_s, struct channel_list_changed *info) 2983 { 2984 struct wpa_supplicant *ifs; 2985 2986 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s", 2987 reg_init_str(info->initiator), reg_type_str(info->type), 2988 info->alpha2[0] ? " alpha2=" : "", 2989 info->alpha2[0] ? info->alpha2 : ""); 2990 2991 if (wpa_s->drv_priv == NULL) 2992 return; /* Ignore event during drv initialization */ 2993 2994 free_hw_features(wpa_s); 2995 wpa_s->hw.modes = wpa_drv_get_hw_feature_data( 2996 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags); 2997 2998 wpas_p2p_update_channel_list(wpa_s); 2999 3000 /* 3001 * Check other interfaces to see if they share the same radio. If 3002 * so, they get updated with this same hw mode info. 3003 */ 3004 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 3005 radio_list) { 3006 if (ifs != wpa_s) { 3007 wpa_printf(MSG_DEBUG, "%s: Updating hw mode", 3008 ifs->ifname); 3009 free_hw_features(ifs); 3010 ifs->hw.modes = wpa_drv_get_hw_feature_data( 3011 ifs, &ifs->hw.num_modes, &ifs->hw.flags); 3012 } 3013 } 3014 3015 /* Restart sched_scan with updated channel list */ 3016 if (wpa_s->sched_scanning) { 3017 wpa_dbg(wpa_s, MSG_DEBUG, 3018 "Channel list changed restart sched scan."); 3019 wpa_supplicant_cancel_sched_scan(wpa_s); 3020 wpa_supplicant_req_scan(wpa_s, 0, 0); 3021 } 3022 } 3023 3024 3025 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s, 3026 const u8 *frame, size_t len, int freq, 3027 int rssi) 3028 { 3029 const struct ieee80211_mgmt *mgmt; 3030 const u8 *payload; 3031 size_t plen; 3032 u8 category; 3033 3034 if (len < IEEE80211_HDRLEN + 2) 3035 return; 3036 3037 mgmt = (const struct ieee80211_mgmt *) frame; 3038 payload = frame + IEEE80211_HDRLEN; 3039 category = *payload++; 3040 plen = len - IEEE80211_HDRLEN - 1; 3041 3042 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR 3043 " Category=%u DataLen=%d freq=%d MHz", 3044 MAC2STR(mgmt->sa), category, (int) plen, freq); 3045 3046 if (category == WLAN_ACTION_WMM) { 3047 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen); 3048 return; 3049 } 3050 3051 #ifdef CONFIG_IEEE80211R 3052 if (category == WLAN_ACTION_FT) { 3053 ft_rx_action(wpa_s, payload, plen); 3054 return; 3055 } 3056 #endif /* CONFIG_IEEE80211R */ 3057 3058 #ifdef CONFIG_IEEE80211W 3059 #ifdef CONFIG_SME 3060 if (category == WLAN_ACTION_SA_QUERY) { 3061 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen); 3062 return; 3063 } 3064 #endif /* CONFIG_SME */ 3065 #endif /* CONFIG_IEEE80211W */ 3066 3067 #ifdef CONFIG_WNM 3068 if (mgmt->u.action.category == WLAN_ACTION_WNM) { 3069 ieee802_11_rx_wnm_action(wpa_s, mgmt, len); 3070 return; 3071 } 3072 #endif /* CONFIG_WNM */ 3073 3074 #ifdef CONFIG_GAS 3075 if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC || 3076 mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) && 3077 gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid, 3078 mgmt->u.action.category, 3079 payload, plen, freq) == 0) 3080 return; 3081 #endif /* CONFIG_GAS */ 3082 3083 #ifdef CONFIG_TDLS 3084 if (category == WLAN_ACTION_PUBLIC && plen >= 4 && 3085 payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) { 3086 wpa_dbg(wpa_s, MSG_DEBUG, 3087 "TDLS: Received Discovery Response from " MACSTR, 3088 MAC2STR(mgmt->sa)); 3089 return; 3090 } 3091 #endif /* CONFIG_TDLS */ 3092 3093 #ifdef CONFIG_INTERWORKING 3094 if (category == WLAN_ACTION_QOS && plen >= 1 && 3095 payload[0] == QOS_QOS_MAP_CONFIG) { 3096 const u8 *pos = payload + 1; 3097 size_t qlen = plen - 1; 3098 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from " 3099 MACSTR, MAC2STR(mgmt->sa)); 3100 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 && 3101 qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET && 3102 pos[1] <= qlen - 2 && pos[1] >= 16) 3103 wpas_qos_map_set(wpa_s, pos + 2, pos[1]); 3104 return; 3105 } 3106 #endif /* CONFIG_INTERWORKING */ 3107 3108 if (category == WLAN_ACTION_RADIO_MEASUREMENT && 3109 payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) { 3110 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1); 3111 return; 3112 } 3113 3114 if (category == WLAN_ACTION_RADIO_MEASUREMENT && 3115 payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) { 3116 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa, 3117 payload + 1, plen - 1, 3118 rssi); 3119 return; 3120 } 3121 3122 wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid, 3123 category, payload, plen, freq); 3124 if (wpa_s->ifmsh) 3125 mesh_mpm_action_rx(wpa_s, mgmt, len); 3126 } 3127 3128 3129 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s, 3130 union wpa_event_data *event) 3131 { 3132 #ifdef CONFIG_P2P 3133 struct wpa_supplicant *ifs; 3134 #endif /* CONFIG_P2P */ 3135 struct wpa_freq_range_list *list; 3136 char *str = NULL; 3137 3138 list = &event->freq_range; 3139 3140 if (list->num) 3141 str = freq_range_list_str(list); 3142 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s", 3143 str ? str : ""); 3144 3145 #ifdef CONFIG_P2P 3146 if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) { 3147 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range", 3148 __func__); 3149 } else { 3150 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event"); 3151 wpas_p2p_update_channel_list(wpa_s); 3152 } 3153 3154 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 3155 int freq; 3156 if (!ifs->current_ssid || 3157 !ifs->current_ssid->p2p_group || 3158 (ifs->current_ssid->mode != WPAS_MODE_P2P_GO && 3159 ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)) 3160 continue; 3161 3162 freq = ifs->current_ssid->frequency; 3163 if (!freq_range_list_includes(list, freq)) { 3164 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range", 3165 freq); 3166 continue; 3167 } 3168 3169 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz", 3170 freq); 3171 /* TODO: Consider using CSA or removing the group within 3172 * wpa_supplicant */ 3173 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP); 3174 } 3175 #endif /* CONFIG_P2P */ 3176 3177 os_free(str); 3178 } 3179 3180 3181 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s, 3182 union wpa_event_data *data) 3183 { 3184 wpa_dbg(wpa_s, MSG_DEBUG, 3185 "Connection authorized by device, previous state %d", 3186 wpa_s->wpa_state); 3187 if (wpa_s->wpa_state == WPA_ASSOCIATED) { 3188 wpa_supplicant_cancel_auth_timeout(wpa_s); 3189 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 3190 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 3191 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 3192 } 3193 wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr); 3194 wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck, 3195 data->assoc_info.ptk_kck_len, 3196 data->assoc_info.ptk_kek, 3197 data->assoc_info.ptk_kek_len); 3198 } 3199 3200 3201 void wpa_supplicant_event(void *ctx, enum wpa_event_type event, 3202 union wpa_event_data *data) 3203 { 3204 struct wpa_supplicant *wpa_s = ctx; 3205 int resched; 3206 3207 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED && 3208 event != EVENT_INTERFACE_ENABLED && 3209 event != EVENT_INTERFACE_STATUS && 3210 event != EVENT_SCHED_SCAN_STOPPED) { 3211 wpa_dbg(wpa_s, MSG_DEBUG, 3212 "Ignore event %s (%d) while interface is disabled", 3213 event_to_string(event), event); 3214 return; 3215 } 3216 3217 #ifndef CONFIG_NO_STDOUT_DEBUG 3218 { 3219 int level = MSG_DEBUG; 3220 3221 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) { 3222 const struct ieee80211_hdr *hdr; 3223 u16 fc; 3224 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame; 3225 fc = le_to_host16(hdr->frame_control); 3226 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 3227 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON) 3228 level = MSG_EXCESSIVE; 3229 } 3230 3231 wpa_dbg(wpa_s, level, "Event %s (%d) received", 3232 event_to_string(event), event); 3233 } 3234 #endif /* CONFIG_NO_STDOUT_DEBUG */ 3235 3236 switch (event) { 3237 case EVENT_AUTH: 3238 sme_event_auth(wpa_s, data); 3239 break; 3240 case EVENT_ASSOC: 3241 wpa_supplicant_event_assoc(wpa_s, data); 3242 if (data && data->assoc_info.authorized) 3243 wpa_supplicant_event_assoc_auth(wpa_s, data); 3244 break; 3245 case EVENT_DISASSOC: 3246 wpas_event_disassoc(wpa_s, 3247 data ? &data->disassoc_info : NULL); 3248 break; 3249 case EVENT_DEAUTH: 3250 wpas_event_deauth(wpa_s, 3251 data ? &data->deauth_info : NULL); 3252 break; 3253 case EVENT_MICHAEL_MIC_FAILURE: 3254 wpa_supplicant_event_michael_mic_failure(wpa_s, data); 3255 break; 3256 #ifndef CONFIG_NO_SCAN_PROCESSING 3257 case EVENT_SCAN_STARTED: 3258 os_get_reltime(&wpa_s->scan_start_time); 3259 if (wpa_s->own_scan_requested) { 3260 struct os_reltime diff; 3261 3262 os_reltime_sub(&wpa_s->scan_start_time, 3263 &wpa_s->scan_trigger_time, &diff); 3264 wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds", 3265 diff.sec, diff.usec); 3266 wpa_s->own_scan_requested = 0; 3267 wpa_s->own_scan_running = 1; 3268 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && 3269 wpa_s->manual_scan_use_id) { 3270 wpa_msg_ctrl(wpa_s, MSG_INFO, 3271 WPA_EVENT_SCAN_STARTED "id=%u", 3272 wpa_s->manual_scan_id); 3273 } else { 3274 wpa_msg_ctrl(wpa_s, MSG_INFO, 3275 WPA_EVENT_SCAN_STARTED); 3276 } 3277 } else { 3278 wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan"); 3279 wpa_s->radio->external_scan_running = 1; 3280 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED); 3281 } 3282 break; 3283 case EVENT_SCAN_RESULTS: 3284 if (os_reltime_initialized(&wpa_s->scan_start_time)) { 3285 struct os_reltime now, diff; 3286 os_get_reltime(&now); 3287 os_reltime_sub(&now, &wpa_s->scan_start_time, &diff); 3288 wpa_s->scan_start_time.sec = 0; 3289 wpa_s->scan_start_time.usec = 0; 3290 wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds", 3291 diff.sec, diff.usec); 3292 } 3293 if (wpa_supplicant_event_scan_results(wpa_s, data)) 3294 break; /* interface may have been removed */ 3295 wpa_s->own_scan_running = 0; 3296 wpa_s->radio->external_scan_running = 0; 3297 radio_work_check_next(wpa_s); 3298 break; 3299 #endif /* CONFIG_NO_SCAN_PROCESSING */ 3300 case EVENT_ASSOCINFO: 3301 wpa_supplicant_event_associnfo(wpa_s, data); 3302 break; 3303 case EVENT_INTERFACE_STATUS: 3304 wpa_supplicant_event_interface_status(wpa_s, data); 3305 break; 3306 case EVENT_PMKID_CANDIDATE: 3307 wpa_supplicant_event_pmkid_candidate(wpa_s, data); 3308 break; 3309 #ifdef CONFIG_PEERKEY 3310 case EVENT_STKSTART: 3311 wpa_supplicant_event_stkstart(wpa_s, data); 3312 break; 3313 #endif /* CONFIG_PEERKEY */ 3314 #ifdef CONFIG_TDLS 3315 case EVENT_TDLS: 3316 wpa_supplicant_event_tdls(wpa_s, data); 3317 break; 3318 #endif /* CONFIG_TDLS */ 3319 #ifdef CONFIG_WNM 3320 case EVENT_WNM: 3321 wpa_supplicant_event_wnm(wpa_s, data); 3322 break; 3323 #endif /* CONFIG_WNM */ 3324 #ifdef CONFIG_IEEE80211R 3325 case EVENT_FT_RESPONSE: 3326 wpa_supplicant_event_ft_response(wpa_s, data); 3327 break; 3328 #endif /* CONFIG_IEEE80211R */ 3329 #ifdef CONFIG_IBSS_RSN 3330 case EVENT_IBSS_RSN_START: 3331 wpa_supplicant_event_ibss_rsn_start(wpa_s, data); 3332 break; 3333 #endif /* CONFIG_IBSS_RSN */ 3334 case EVENT_ASSOC_REJECT: 3335 if (data->assoc_reject.bssid) 3336 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT 3337 "bssid=" MACSTR " status_code=%u", 3338 MAC2STR(data->assoc_reject.bssid), 3339 data->assoc_reject.status_code); 3340 else 3341 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT 3342 "status_code=%u", 3343 data->assoc_reject.status_code); 3344 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 3345 sme_event_assoc_reject(wpa_s, data); 3346 else { 3347 const u8 *bssid = data->assoc_reject.bssid; 3348 if (bssid == NULL || is_zero_ether_addr(bssid)) 3349 bssid = wpa_s->pending_bssid; 3350 wpas_connection_failed(wpa_s, bssid); 3351 wpa_supplicant_mark_disassoc(wpa_s); 3352 } 3353 break; 3354 case EVENT_AUTH_TIMED_OUT: 3355 /* It is possible to get this event from earlier connection */ 3356 if (wpa_s->current_ssid && 3357 wpa_s->current_ssid->mode == WPAS_MODE_MESH) { 3358 wpa_dbg(wpa_s, MSG_DEBUG, 3359 "Ignore AUTH_TIMED_OUT in mesh configuration"); 3360 break; 3361 } 3362 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 3363 sme_event_auth_timed_out(wpa_s, data); 3364 break; 3365 case EVENT_ASSOC_TIMED_OUT: 3366 /* It is possible to get this event from earlier connection */ 3367 if (wpa_s->current_ssid && 3368 wpa_s->current_ssid->mode == WPAS_MODE_MESH) { 3369 wpa_dbg(wpa_s, MSG_DEBUG, 3370 "Ignore ASSOC_TIMED_OUT in mesh configuration"); 3371 break; 3372 } 3373 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 3374 sme_event_assoc_timed_out(wpa_s, data); 3375 break; 3376 case EVENT_TX_STATUS: 3377 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR 3378 " type=%d stype=%d", 3379 MAC2STR(data->tx_status.dst), 3380 data->tx_status.type, data->tx_status.stype); 3381 #ifdef CONFIG_AP 3382 if (wpa_s->ap_iface == NULL) { 3383 #ifdef CONFIG_OFFCHANNEL 3384 if (data->tx_status.type == WLAN_FC_TYPE_MGMT && 3385 data->tx_status.stype == WLAN_FC_STYPE_ACTION) 3386 offchannel_send_action_tx_status( 3387 wpa_s, data->tx_status.dst, 3388 data->tx_status.data, 3389 data->tx_status.data_len, 3390 data->tx_status.ack ? 3391 OFFCHANNEL_SEND_ACTION_SUCCESS : 3392 OFFCHANNEL_SEND_ACTION_NO_ACK); 3393 #endif /* CONFIG_OFFCHANNEL */ 3394 break; 3395 } 3396 #endif /* CONFIG_AP */ 3397 #ifdef CONFIG_OFFCHANNEL 3398 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst=" 3399 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst)); 3400 /* 3401 * Catch TX status events for Action frames we sent via group 3402 * interface in GO mode. 3403 */ 3404 if (data->tx_status.type == WLAN_FC_TYPE_MGMT && 3405 data->tx_status.stype == WLAN_FC_STYPE_ACTION && 3406 os_memcmp(wpa_s->parent->pending_action_dst, 3407 data->tx_status.dst, ETH_ALEN) == 0) { 3408 offchannel_send_action_tx_status( 3409 wpa_s->parent, data->tx_status.dst, 3410 data->tx_status.data, 3411 data->tx_status.data_len, 3412 data->tx_status.ack ? 3413 OFFCHANNEL_SEND_ACTION_SUCCESS : 3414 OFFCHANNEL_SEND_ACTION_NO_ACK); 3415 break; 3416 } 3417 #endif /* CONFIG_OFFCHANNEL */ 3418 #ifdef CONFIG_AP 3419 switch (data->tx_status.type) { 3420 case WLAN_FC_TYPE_MGMT: 3421 ap_mgmt_tx_cb(wpa_s, data->tx_status.data, 3422 data->tx_status.data_len, 3423 data->tx_status.stype, 3424 data->tx_status.ack); 3425 break; 3426 case WLAN_FC_TYPE_DATA: 3427 ap_tx_status(wpa_s, data->tx_status.dst, 3428 data->tx_status.data, 3429 data->tx_status.data_len, 3430 data->tx_status.ack); 3431 break; 3432 } 3433 #endif /* CONFIG_AP */ 3434 break; 3435 #ifdef CONFIG_AP 3436 case EVENT_EAPOL_TX_STATUS: 3437 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst, 3438 data->eapol_tx_status.data, 3439 data->eapol_tx_status.data_len, 3440 data->eapol_tx_status.ack); 3441 break; 3442 case EVENT_DRIVER_CLIENT_POLL_OK: 3443 ap_client_poll_ok(wpa_s, data->client_poll.addr); 3444 break; 3445 case EVENT_RX_FROM_UNKNOWN: 3446 if (wpa_s->ap_iface == NULL) 3447 break; 3448 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr, 3449 data->rx_from_unknown.wds); 3450 break; 3451 case EVENT_CH_SWITCH: 3452 if (!data) 3453 break; 3454 if (!wpa_s->ap_iface) { 3455 wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch " 3456 "event in non-AP mode"); 3457 break; 3458 } 3459 3460 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq, 3461 data->ch_switch.ht_enabled, 3462 data->ch_switch.ch_offset, 3463 data->ch_switch.ch_width, 3464 data->ch_switch.cf1, 3465 data->ch_switch.cf2); 3466 break; 3467 #ifdef NEED_AP_MLME 3468 case EVENT_DFS_RADAR_DETECTED: 3469 if (data) 3470 wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event); 3471 break; 3472 case EVENT_DFS_CAC_STARTED: 3473 if (data) 3474 wpas_event_dfs_cac_started(wpa_s, &data->dfs_event); 3475 break; 3476 case EVENT_DFS_CAC_FINISHED: 3477 if (data) 3478 wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event); 3479 break; 3480 case EVENT_DFS_CAC_ABORTED: 3481 if (data) 3482 wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event); 3483 break; 3484 case EVENT_DFS_NOP_FINISHED: 3485 if (data) 3486 wpas_event_dfs_cac_nop_finished(wpa_s, 3487 &data->dfs_event); 3488 break; 3489 #endif /* NEED_AP_MLME */ 3490 #endif /* CONFIG_AP */ 3491 case EVENT_RX_MGMT: { 3492 u16 fc, stype; 3493 const struct ieee80211_mgmt *mgmt; 3494 3495 #ifdef CONFIG_TESTING_OPTIONS 3496 if (wpa_s->ext_mgmt_frame_handling) { 3497 struct rx_mgmt *rx = &data->rx_mgmt; 3498 size_t hex_len = 2 * rx->frame_len + 1; 3499 char *hex = os_malloc(hex_len); 3500 if (hex) { 3501 wpa_snprintf_hex(hex, hex_len, 3502 rx->frame, rx->frame_len); 3503 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s", 3504 rx->freq, rx->datarate, rx->ssi_signal, 3505 hex); 3506 os_free(hex); 3507 } 3508 break; 3509 } 3510 #endif /* CONFIG_TESTING_OPTIONS */ 3511 3512 mgmt = (const struct ieee80211_mgmt *) 3513 data->rx_mgmt.frame; 3514 fc = le_to_host16(mgmt->frame_control); 3515 stype = WLAN_FC_GET_STYPE(fc); 3516 3517 #ifdef CONFIG_AP 3518 if (wpa_s->ap_iface == NULL) { 3519 #endif /* CONFIG_AP */ 3520 #ifdef CONFIG_P2P 3521 if (stype == WLAN_FC_STYPE_PROBE_REQ && 3522 data->rx_mgmt.frame_len > 24) { 3523 const u8 *src = mgmt->sa; 3524 const u8 *ie = mgmt->u.probe_req.variable; 3525 size_t ie_len = data->rx_mgmt.frame_len - 3526 (mgmt->u.probe_req.variable - 3527 data->rx_mgmt.frame); 3528 wpas_p2p_probe_req_rx( 3529 wpa_s, src, mgmt->da, 3530 mgmt->bssid, ie, ie_len, 3531 data->rx_mgmt.freq, 3532 data->rx_mgmt.ssi_signal); 3533 break; 3534 } 3535 #endif /* CONFIG_P2P */ 3536 #ifdef CONFIG_IBSS_RSN 3537 if (wpa_s->current_ssid && 3538 wpa_s->current_ssid->mode == WPAS_MODE_IBSS && 3539 stype == WLAN_FC_STYPE_AUTH && 3540 data->rx_mgmt.frame_len >= 30) { 3541 wpa_supplicant_event_ibss_auth(wpa_s, data); 3542 break; 3543 } 3544 #endif /* CONFIG_IBSS_RSN */ 3545 3546 if (stype == WLAN_FC_STYPE_ACTION) { 3547 wpas_event_rx_mgmt_action( 3548 wpa_s, data->rx_mgmt.frame, 3549 data->rx_mgmt.frame_len, 3550 data->rx_mgmt.freq, 3551 data->rx_mgmt.ssi_signal); 3552 break; 3553 } 3554 3555 if (wpa_s->ifmsh) { 3556 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt); 3557 break; 3558 } 3559 3560 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received " 3561 "management frame in non-AP mode"); 3562 break; 3563 #ifdef CONFIG_AP 3564 } 3565 3566 if (stype == WLAN_FC_STYPE_PROBE_REQ && 3567 data->rx_mgmt.frame_len > 24) { 3568 const u8 *ie = mgmt->u.probe_req.variable; 3569 size_t ie_len = data->rx_mgmt.frame_len - 3570 (mgmt->u.probe_req.variable - 3571 data->rx_mgmt.frame); 3572 3573 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da, 3574 mgmt->bssid, ie, ie_len, 3575 data->rx_mgmt.ssi_signal); 3576 } 3577 3578 ap_mgmt_rx(wpa_s, &data->rx_mgmt); 3579 #endif /* CONFIG_AP */ 3580 break; 3581 } 3582 case EVENT_RX_PROBE_REQ: 3583 if (data->rx_probe_req.sa == NULL || 3584 data->rx_probe_req.ie == NULL) 3585 break; 3586 #ifdef CONFIG_AP 3587 if (wpa_s->ap_iface) { 3588 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0], 3589 data->rx_probe_req.sa, 3590 data->rx_probe_req.da, 3591 data->rx_probe_req.bssid, 3592 data->rx_probe_req.ie, 3593 data->rx_probe_req.ie_len, 3594 data->rx_probe_req.ssi_signal); 3595 break; 3596 } 3597 #endif /* CONFIG_AP */ 3598 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa, 3599 data->rx_probe_req.da, 3600 data->rx_probe_req.bssid, 3601 data->rx_probe_req.ie, 3602 data->rx_probe_req.ie_len, 3603 0, 3604 data->rx_probe_req.ssi_signal); 3605 break; 3606 case EVENT_REMAIN_ON_CHANNEL: 3607 #ifdef CONFIG_OFFCHANNEL 3608 offchannel_remain_on_channel_cb( 3609 wpa_s, data->remain_on_channel.freq, 3610 data->remain_on_channel.duration); 3611 #endif /* CONFIG_OFFCHANNEL */ 3612 wpas_p2p_remain_on_channel_cb( 3613 wpa_s, data->remain_on_channel.freq, 3614 data->remain_on_channel.duration); 3615 break; 3616 case EVENT_CANCEL_REMAIN_ON_CHANNEL: 3617 #ifdef CONFIG_OFFCHANNEL 3618 offchannel_cancel_remain_on_channel_cb( 3619 wpa_s, data->remain_on_channel.freq); 3620 #endif /* CONFIG_OFFCHANNEL */ 3621 wpas_p2p_cancel_remain_on_channel_cb( 3622 wpa_s, data->remain_on_channel.freq); 3623 break; 3624 case EVENT_EAPOL_RX: 3625 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src, 3626 data->eapol_rx.data, 3627 data->eapol_rx.data_len); 3628 break; 3629 case EVENT_SIGNAL_CHANGE: 3630 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE 3631 "above=%d signal=%d noise=%d txrate=%d", 3632 data->signal_change.above_threshold, 3633 data->signal_change.current_signal, 3634 data->signal_change.current_noise, 3635 data->signal_change.current_txrate); 3636 wpa_bss_update_level(wpa_s->current_bss, 3637 data->signal_change.current_signal); 3638 bgscan_notify_signal_change( 3639 wpa_s, data->signal_change.above_threshold, 3640 data->signal_change.current_signal, 3641 data->signal_change.current_noise, 3642 data->signal_change.current_txrate); 3643 break; 3644 case EVENT_INTERFACE_ENABLED: 3645 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled"); 3646 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { 3647 wpa_supplicant_update_mac_addr(wpa_s); 3648 if (wpa_s->p2p_mgmt) { 3649 wpa_supplicant_set_state(wpa_s, 3650 WPA_DISCONNECTED); 3651 break; 3652 } 3653 3654 #ifdef CONFIG_AP 3655 if (!wpa_s->ap_iface) { 3656 wpa_supplicant_set_state(wpa_s, 3657 WPA_DISCONNECTED); 3658 wpa_s->scan_req = NORMAL_SCAN_REQ; 3659 wpa_supplicant_req_scan(wpa_s, 0, 0); 3660 } else 3661 wpa_supplicant_set_state(wpa_s, 3662 WPA_COMPLETED); 3663 #else /* CONFIG_AP */ 3664 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 3665 wpa_supplicant_req_scan(wpa_s, 0, 0); 3666 #endif /* CONFIG_AP */ 3667 } 3668 break; 3669 case EVENT_INTERFACE_DISABLED: 3670 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled"); 3671 #ifdef CONFIG_P2P 3672 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO || 3673 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group && 3674 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) { 3675 /* 3676 * Mark interface disabled if this happens to end up not 3677 * being removed as a separate P2P group interface. 3678 */ 3679 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 3680 /* 3681 * The interface was externally disabled. Remove 3682 * it assuming an external entity will start a 3683 * new session if needed. 3684 */ 3685 if (wpa_s->current_ssid && 3686 wpa_s->current_ssid->p2p_group) 3687 wpas_p2p_interface_unavailable(wpa_s); 3688 else 3689 wpas_p2p_disconnect(wpa_s); 3690 /* 3691 * wpa_s instance may have been freed, so must not use 3692 * it here anymore. 3693 */ 3694 break; 3695 } 3696 if (wpa_s->p2p_scan_work && wpa_s->global->p2p && 3697 p2p_in_progress(wpa_s->global->p2p) > 1) { 3698 /* This radio work will be cancelled, so clear P2P 3699 * state as well. 3700 */ 3701 p2p_stop_find(wpa_s->global->p2p); 3702 } 3703 #endif /* CONFIG_P2P */ 3704 3705 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 3706 /* 3707 * Indicate disconnection to keep ctrl_iface events 3708 * consistent. 3709 */ 3710 wpa_supplicant_event_disassoc( 3711 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1); 3712 } 3713 wpa_supplicant_mark_disassoc(wpa_s); 3714 radio_remove_works(wpa_s, NULL, 0); 3715 3716 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 3717 break; 3718 case EVENT_CHANNEL_LIST_CHANGED: 3719 wpa_supplicant_update_channel_list( 3720 wpa_s, &data->channel_list_changed); 3721 break; 3722 case EVENT_INTERFACE_UNAVAILABLE: 3723 wpas_p2p_interface_unavailable(wpa_s); 3724 break; 3725 case EVENT_BEST_CHANNEL: 3726 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received " 3727 "(%d %d %d)", 3728 data->best_chan.freq_24, data->best_chan.freq_5, 3729 data->best_chan.freq_overall); 3730 wpa_s->best_24_freq = data->best_chan.freq_24; 3731 wpa_s->best_5_freq = data->best_chan.freq_5; 3732 wpa_s->best_overall_freq = data->best_chan.freq_overall; 3733 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24, 3734 data->best_chan.freq_5, 3735 data->best_chan.freq_overall); 3736 break; 3737 case EVENT_UNPROT_DEAUTH: 3738 wpa_supplicant_event_unprot_deauth(wpa_s, 3739 &data->unprot_deauth); 3740 break; 3741 case EVENT_UNPROT_DISASSOC: 3742 wpa_supplicant_event_unprot_disassoc(wpa_s, 3743 &data->unprot_disassoc); 3744 break; 3745 case EVENT_STATION_LOW_ACK: 3746 #ifdef CONFIG_AP 3747 if (wpa_s->ap_iface && data) 3748 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0], 3749 data->low_ack.addr); 3750 #endif /* CONFIG_AP */ 3751 #ifdef CONFIG_TDLS 3752 if (data) 3753 wpa_tdls_disable_unreachable_link(wpa_s->wpa, 3754 data->low_ack.addr); 3755 #endif /* CONFIG_TDLS */ 3756 break; 3757 case EVENT_IBSS_PEER_LOST: 3758 #ifdef CONFIG_IBSS_RSN 3759 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer); 3760 #endif /* CONFIG_IBSS_RSN */ 3761 break; 3762 case EVENT_DRIVER_GTK_REKEY: 3763 if (os_memcmp(data->driver_gtk_rekey.bssid, 3764 wpa_s->bssid, ETH_ALEN)) 3765 break; 3766 if (!wpa_s->wpa) 3767 break; 3768 wpa_sm_update_replay_ctr(wpa_s->wpa, 3769 data->driver_gtk_rekey.replay_ctr); 3770 break; 3771 case EVENT_SCHED_SCAN_STOPPED: 3772 wpa_s->pno = 0; 3773 wpa_s->sched_scanning = 0; 3774 resched = wpa_s->scanning; 3775 wpa_supplicant_notify_scanning(wpa_s, 0); 3776 3777 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 3778 break; 3779 3780 /* 3781 * Start a new sched scan to continue searching for more SSIDs 3782 * either if timed out or PNO schedule scan is pending. 3783 */ 3784 if (wpa_s->sched_scan_timed_out) { 3785 wpa_supplicant_req_sched_scan(wpa_s); 3786 } else if (wpa_s->pno_sched_pending) { 3787 wpa_s->pno_sched_pending = 0; 3788 wpas_start_pno(wpa_s); 3789 } else if (resched) { 3790 wpa_supplicant_req_scan(wpa_s, 0, 0); 3791 } 3792 3793 break; 3794 case EVENT_WPS_BUTTON_PUSHED: 3795 #ifdef CONFIG_WPS 3796 wpas_wps_start_pbc(wpa_s, NULL, 0); 3797 #endif /* CONFIG_WPS */ 3798 break; 3799 case EVENT_AVOID_FREQUENCIES: 3800 wpa_supplicant_notify_avoid_freq(wpa_s, data); 3801 break; 3802 case EVENT_CONNECT_FAILED_REASON: 3803 #ifdef CONFIG_AP 3804 if (!wpa_s->ap_iface || !data) 3805 break; 3806 hostapd_event_connect_failed_reason( 3807 wpa_s->ap_iface->bss[0], 3808 data->connect_failed_reason.addr, 3809 data->connect_failed_reason.code); 3810 #endif /* CONFIG_AP */ 3811 break; 3812 case EVENT_NEW_PEER_CANDIDATE: 3813 #ifdef CONFIG_MESH 3814 if (!wpa_s->ifmsh || !data) 3815 break; 3816 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer, 3817 data->mesh_peer.ies, 3818 data->mesh_peer.ie_len); 3819 #endif /* CONFIG_MESH */ 3820 break; 3821 default: 3822 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event); 3823 break; 3824 } 3825 } 3826
