events.c revision 4dd28dc25895165566a1c8a9cac7bcd755ff8fe3
1/* 2 * WPA Supplicant - Driver event processing 3 * Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9#include "includes.h" 10 11#include "common.h" 12#include "eapol_supp/eapol_supp_sm.h" 13#include "rsn_supp/wpa.h" 14#include "eloop.h" 15#include "config.h" 16#include "l2_packet/l2_packet.h" 17#include "wpa_supplicant_i.h" 18#include "driver_i.h" 19#include "pcsc_funcs.h" 20#include "rsn_supp/preauth.h" 21#include "rsn_supp/pmksa_cache.h" 22#include "common/wpa_ctrl.h" 23#include "eap_peer/eap.h" 24#include "ap/hostapd.h" 25#include "p2p/p2p.h" 26#include "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 51static 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 56static 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 74static struct wpa_bss * wpa_supplicant_get_new_bss( 75 struct wpa_supplicant *wpa_s, const u8 *bssid) 76{ 77 struct wpa_bss *bss = NULL; 78 struct wpa_ssid *ssid = wpa_s->current_ssid; 79 80 if (ssid->ssid_len > 0) 81 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len); 82 if (!bss) 83 bss = wpa_bss_get_bssid(wpa_s, bssid); 84 85 return bss; 86} 87 88 89static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s) 90{ 91 struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid); 92 93 if (!bss) { 94 wpa_supplicant_update_scan_results(wpa_s); 95 96 /* Get the BSS from the new scan results */ 97 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid); 98 } 99 100 if (bss) 101 wpa_s->current_bss = bss; 102} 103 104 105static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s) 106{ 107 struct wpa_ssid *ssid, *old_ssid; 108 int res; 109 110 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) { 111 wpa_supplicant_update_current_bss(wpa_s); 112 return 0; 113 } 114 115 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association " 116 "information"); 117 ssid = wpa_supplicant_get_ssid(wpa_s); 118 if (ssid == NULL) { 119 wpa_msg(wpa_s, MSG_INFO, 120 "No network configuration found for the current AP"); 121 return -1; 122 } 123 124 if (wpas_network_disabled(wpa_s, ssid)) { 125 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled"); 126 return -1; 127 } 128 129 if (disallowed_bssid(wpa_s, wpa_s->bssid) || 130 disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) { 131 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed"); 132 return -1; 133 } 134 135 res = wpas_temp_disabled(wpa_s, ssid); 136 if (res > 0) { 137 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily " 138 "disabled for %d second(s)", res); 139 return -1; 140 } 141 142 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the " 143 "current AP"); 144 if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { 145 u8 wpa_ie[80]; 146 size_t wpa_ie_len = sizeof(wpa_ie); 147 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, 148 wpa_ie, &wpa_ie_len) < 0) 149 wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites"); 150 } else { 151 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 152 } 153 154 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) 155 eapol_sm_invalidate_cached_session(wpa_s->eapol); 156 old_ssid = wpa_s->current_ssid; 157 wpa_s->current_ssid = ssid; 158 159 wpa_supplicant_update_current_bss(wpa_s); 160 161 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 162 wpa_supplicant_initiate_eapol(wpa_s); 163 if (old_ssid != wpa_s->current_ssid) 164 wpas_notify_network_changed(wpa_s); 165 166 return 0; 167} 168 169 170void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx) 171{ 172 struct wpa_supplicant *wpa_s = eloop_ctx; 173 174 if (wpa_s->countermeasures) { 175 wpa_s->countermeasures = 0; 176 wpa_drv_set_countermeasures(wpa_s, 0); 177 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped"); 178 179 /* 180 * It is possible that the device is sched scanning, which means 181 * that a connection attempt will be done only when we receive 182 * scan results. However, in this case, it would be preferable 183 * to scan and connect immediately, so cancel the sched_scan and 184 * issue a regular scan flow. 185 */ 186 wpa_supplicant_cancel_sched_scan(wpa_s); 187 wpa_supplicant_req_scan(wpa_s, 0, 0); 188 } 189} 190 191 192void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s) 193{ 194 int bssid_changed; 195 196 wnm_bss_keep_alive_deinit(wpa_s); 197 198#ifdef CONFIG_IBSS_RSN 199 ibss_rsn_deinit(wpa_s->ibss_rsn); 200 wpa_s->ibss_rsn = NULL; 201#endif /* CONFIG_IBSS_RSN */ 202 203#ifdef CONFIG_AP 204 wpa_supplicant_ap_deinit(wpa_s); 205#endif /* CONFIG_AP */ 206 207 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 208 return; 209 210 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 211 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 212 os_memset(wpa_s->bssid, 0, ETH_ALEN); 213 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 214 sme_clear_on_disassoc(wpa_s); 215#ifdef CONFIG_P2P 216 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 217#endif /* CONFIG_P2P */ 218 wpa_s->current_bss = NULL; 219 wpa_s->assoc_freq = 0; 220 221 if (bssid_changed) 222 wpas_notify_bssid_changed(wpa_s); 223 224 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 225 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 226 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) 227 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 228 wpa_s->ap_ies_from_associnfo = 0; 229 wpa_s->current_ssid = NULL; 230 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 231 wpa_s->key_mgmt = 0; 232 233 wpas_rrm_reset(wpa_s); 234} 235 236 237static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s) 238{ 239 struct wpa_ie_data ie; 240 int pmksa_set = -1; 241 size_t i; 242 243 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 || 244 ie.pmkid == NULL) 245 return; 246 247 for (i = 0; i < ie.num_pmkid; i++) { 248 pmksa_set = pmksa_cache_set_current(wpa_s->wpa, 249 ie.pmkid + i * PMKID_LEN, 250 NULL, NULL, 0); 251 if (pmksa_set == 0) { 252 eapol_sm_notify_pmkid_attempt(wpa_s->eapol); 253 break; 254 } 255 } 256 257 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from " 258 "PMKSA cache", pmksa_set == 0 ? "" : "not "); 259} 260 261 262static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s, 263 union wpa_event_data *data) 264{ 265 if (data == NULL) { 266 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate " 267 "event"); 268 return; 269 } 270 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR 271 " index=%d preauth=%d", 272 MAC2STR(data->pmkid_candidate.bssid), 273 data->pmkid_candidate.index, 274 data->pmkid_candidate.preauth); 275 276 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid, 277 data->pmkid_candidate.index, 278 data->pmkid_candidate.preauth); 279} 280 281 282static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s) 283{ 284 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 285 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) 286 return 0; 287 288#ifdef IEEE8021X_EAPOL 289 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA && 290 wpa_s->current_ssid && 291 !(wpa_s->current_ssid->eapol_flags & 292 (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 293 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) { 294 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either 295 * plaintext or static WEP keys). */ 296 return 0; 297 } 298#endif /* IEEE8021X_EAPOL */ 299 300 return 1; 301} 302 303 304/** 305 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC 306 * @wpa_s: pointer to wpa_supplicant data 307 * @ssid: Configuration data for the network 308 * Returns: 0 on success, -1 on failure 309 * 310 * This function is called when starting authentication with a network that is 311 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA). 312 */ 313int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s, 314 struct wpa_ssid *ssid) 315{ 316#ifdef IEEE8021X_EAPOL 317#ifdef PCSC_FUNCS 318 int aka = 0, sim = 0; 319 320 if ((ssid != NULL && ssid->eap.pcsc == NULL) || 321 wpa_s->scard != NULL || wpa_s->conf->external_sim) 322 return 0; 323 324 if (ssid == NULL || ssid->eap.eap_methods == NULL) { 325 sim = 1; 326 aka = 1; 327 } else { 328 struct eap_method_type *eap = ssid->eap.eap_methods; 329 while (eap->vendor != EAP_VENDOR_IETF || 330 eap->method != EAP_TYPE_NONE) { 331 if (eap->vendor == EAP_VENDOR_IETF) { 332 if (eap->method == EAP_TYPE_SIM) 333 sim = 1; 334 else if (eap->method == EAP_TYPE_AKA || 335 eap->method == EAP_TYPE_AKA_PRIME) 336 aka = 1; 337 } 338 eap++; 339 } 340 } 341 342 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL) 343 sim = 0; 344 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL && 345 eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) == 346 NULL) 347 aka = 0; 348 349 if (!sim && !aka) { 350 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to " 351 "use SIM, but neither EAP-SIM nor EAP-AKA are " 352 "enabled"); 353 return 0; 354 } 355 356 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM " 357 "(sim=%d aka=%d) - initialize PCSC", sim, aka); 358 359 wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader); 360 if (wpa_s->scard == NULL) { 361 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM " 362 "(pcsc-lite)"); 363 return -1; 364 } 365 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard); 366 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard); 367#endif /* PCSC_FUNCS */ 368#endif /* IEEE8021X_EAPOL */ 369 370 return 0; 371} 372 373 374#ifndef CONFIG_NO_SCAN_PROCESSING 375 376static int has_wep_key(struct wpa_ssid *ssid) 377{ 378 int i; 379 380 for (i = 0; i < NUM_WEP_KEYS; i++) { 381 if (ssid->wep_key_len[i]) 382 return 1; 383 } 384 385 return 0; 386} 387 388 389static int wpa_supplicant_match_privacy(struct wpa_bss *bss, 390 struct wpa_ssid *ssid) 391{ 392 int privacy = 0; 393 394 if (ssid->mixed_cell) 395 return 1; 396 397#ifdef CONFIG_WPS 398 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 399 return 1; 400#endif /* CONFIG_WPS */ 401 402 if (has_wep_key(ssid)) 403 privacy = 1; 404 405#ifdef IEEE8021X_EAPOL 406 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 407 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 408 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) 409 privacy = 1; 410#endif /* IEEE8021X_EAPOL */ 411 412 if (wpa_key_mgmt_wpa(ssid->key_mgmt)) 413 privacy = 1; 414 415 if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN) 416 privacy = 1; 417 418 if (bss->caps & IEEE80211_CAP_PRIVACY) 419 return privacy; 420 return !privacy; 421} 422 423 424static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s, 425 struct wpa_ssid *ssid, 426 struct wpa_bss *bss) 427{ 428 struct wpa_ie_data ie; 429 int proto_match = 0; 430 const u8 *rsn_ie, *wpa_ie; 431 int ret; 432 int wep_ok; 433 434 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss); 435 if (ret >= 0) 436 return ret; 437 438 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */ 439 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) && 440 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) && 441 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) || 442 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)); 443 444 rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 445 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) { 446 proto_match++; 447 448 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) { 449 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse " 450 "failed"); 451 break; 452 } 453 454 if (wep_ok && 455 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104))) 456 { 457 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN " 458 "in RSN IE"); 459 return 1; 460 } 461 462 if (!(ie.proto & ssid->proto)) { 463 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto " 464 "mismatch"); 465 break; 466 } 467 468 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) { 469 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK " 470 "cipher mismatch"); 471 break; 472 } 473 474 if (!(ie.group_cipher & ssid->group_cipher)) { 475 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK " 476 "cipher mismatch"); 477 break; 478 } 479 480 if (!(ie.key_mgmt & ssid->key_mgmt)) { 481 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt " 482 "mismatch"); 483 break; 484 } 485 486#ifdef CONFIG_IEEE80211W 487 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) && 488 wpas_get_ssid_pmf(wpa_s, ssid) == 489 MGMT_FRAME_PROTECTION_REQUIRED) { 490 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt " 491 "frame protection"); 492 break; 493 } 494#endif /* CONFIG_IEEE80211W */ 495 496 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE"); 497 return 1; 498 } 499 500 wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 501 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) { 502 proto_match++; 503 504 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) { 505 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse " 506 "failed"); 507 break; 508 } 509 510 if (wep_ok && 511 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104))) 512 { 513 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN " 514 "in WPA IE"); 515 return 1; 516 } 517 518 if (!(ie.proto & ssid->proto)) { 519 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto " 520 "mismatch"); 521 break; 522 } 523 524 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) { 525 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK " 526 "cipher mismatch"); 527 break; 528 } 529 530 if (!(ie.group_cipher & ssid->group_cipher)) { 531 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK " 532 "cipher mismatch"); 533 break; 534 } 535 536 if (!(ie.key_mgmt & ssid->key_mgmt)) { 537 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt " 538 "mismatch"); 539 break; 540 } 541 542 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE"); 543 return 1; 544 } 545 546 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie && 547 !rsn_ie) { 548 wpa_dbg(wpa_s, MSG_DEBUG, " allow for non-WPA IEEE 802.1X"); 549 return 1; 550 } 551 552 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) && 553 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) { 554 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match"); 555 return 0; 556 } 557 558 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && 559 wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) { 560 wpa_dbg(wpa_s, MSG_DEBUG, " allow in OSEN"); 561 return 1; 562 } 563 564 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) { 565 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2"); 566 return 1; 567 } 568 569 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with " 570 "WPA/WPA2"); 571 572 return 0; 573} 574 575 576static int freq_allowed(int *freqs, int freq) 577{ 578 int i; 579 580 if (freqs == NULL) 581 return 1; 582 583 for (i = 0; freqs[i]; i++) 584 if (freqs[i] == freq) 585 return 1; 586 return 0; 587} 588 589 590static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) 591{ 592 const struct hostapd_hw_modes *mode = NULL, *modes; 593 const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES }; 594 const u8 *rate_ie; 595 int i, j, k; 596 597 if (bss->freq == 0) 598 return 1; /* Cannot do matching without knowing band */ 599 600 modes = wpa_s->hw.modes; 601 if (modes == NULL) { 602 /* 603 * The driver does not provide any additional information 604 * about the utilized hardware, so allow the connection attempt 605 * to continue. 606 */ 607 return 1; 608 } 609 610 for (i = 0; i < wpa_s->hw.num_modes; i++) { 611 for (j = 0; j < modes[i].num_channels; j++) { 612 int freq = modes[i].channels[j].freq; 613 if (freq == bss->freq) { 614 if (mode && 615 mode->mode == HOSTAPD_MODE_IEEE80211G) 616 break; /* do not allow 802.11b replace 617 * 802.11g */ 618 mode = &modes[i]; 619 break; 620 } 621 } 622 } 623 624 if (mode == NULL) 625 return 0; 626 627 for (i = 0; i < (int) sizeof(scan_ie); i++) { 628 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]); 629 if (rate_ie == NULL) 630 continue; 631 632 for (j = 2; j < rate_ie[1] + 2; j++) { 633 int flagged = !!(rate_ie[j] & 0x80); 634 int r = (rate_ie[j] & 0x7f) * 5; 635 636 /* 637 * IEEE Std 802.11n-2009 7.3.2.2: 638 * The new BSS Membership selector value is encoded 639 * like a legacy basic rate, but it is not a rate and 640 * only indicates if the BSS members are required to 641 * support the mandatory features of Clause 20 [HT PHY] 642 * in order to join the BSS. 643 */ 644 if (flagged && ((rate_ie[j] & 0x7f) == 645 BSS_MEMBERSHIP_SELECTOR_HT_PHY)) { 646 if (!ht_supported(mode)) { 647 wpa_dbg(wpa_s, MSG_DEBUG, 648 " hardware does not support " 649 "HT PHY"); 650 return 0; 651 } 652 continue; 653 } 654 655 /* There's also a VHT selector for 802.11ac */ 656 if (flagged && ((rate_ie[j] & 0x7f) == 657 BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) { 658 if (!vht_supported(mode)) { 659 wpa_dbg(wpa_s, MSG_DEBUG, 660 " hardware does not support " 661 "VHT PHY"); 662 return 0; 663 } 664 continue; 665 } 666 667 if (!flagged) 668 continue; 669 670 /* check for legacy basic rates */ 671 for (k = 0; k < mode->num_rates; k++) { 672 if (mode->rates[k] == r) 673 break; 674 } 675 if (k == mode->num_rates) { 676 /* 677 * IEEE Std 802.11-2007 7.3.2.2 demands that in 678 * order to join a BSS all required rates 679 * have to be supported by the hardware. 680 */ 681 wpa_dbg(wpa_s, MSG_DEBUG, 682 " hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)", 683 r / 10, r % 10, 684 bss->freq, mode->mode, mode->num_rates); 685 return 0; 686 } 687 } 688 } 689 690 return 1; 691} 692 693 694/* 695 * Test whether BSS is in an ESS. 696 * This is done differently in DMG (60 GHz) and non-DMG bands 697 */ 698static int bss_is_ess(struct wpa_bss *bss) 699{ 700 if (bss_is_dmg(bss)) { 701 return (bss->caps & IEEE80211_CAP_DMG_MASK) == 702 IEEE80211_CAP_DMG_AP; 703 } 704 705 return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) == 706 IEEE80211_CAP_ESS); 707} 708 709 710static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask) 711{ 712 size_t i; 713 714 for (i = 0; i < ETH_ALEN; i++) { 715 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i])) 716 return 0; 717 } 718 return 1; 719} 720 721 722static int addr_in_list(const u8 *addr, const u8 *list, size_t num) 723{ 724 size_t i; 725 726 for (i = 0; i < num; i++) { 727 const u8 *a = list + i * ETH_ALEN * 2; 728 const u8 *m = a + ETH_ALEN; 729 730 if (match_mac_mask(a, addr, m)) 731 return 1; 732 } 733 return 0; 734} 735 736 737static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s, 738 int i, struct wpa_bss *bss, 739 struct wpa_ssid *group, 740 int only_first_ssid) 741{ 742 u8 wpa_ie_len, rsn_ie_len; 743 int wpa; 744 struct wpa_blacklist *e; 745 const u8 *ie; 746 struct wpa_ssid *ssid; 747 int osen; 748 749 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 750 wpa_ie_len = ie ? ie[1] : 0; 751 752 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 753 rsn_ie_len = ie ? ie[1] : 0; 754 755 ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE); 756 osen = ie != NULL; 757 758 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' " 759 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s", 760 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len), 761 wpa_ie_len, rsn_ie_len, bss->caps, bss->level, 762 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "", 763 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) || 764 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ? 765 " p2p" : "", 766 osen ? " osen=1" : ""); 767 768 e = wpa_blacklist_get(wpa_s, bss->bssid); 769 if (e) { 770 int limit = 1; 771 if (wpa_supplicant_enabled_networks(wpa_s) == 1) { 772 /* 773 * When only a single network is enabled, we can 774 * trigger blacklisting on the first failure. This 775 * should not be done with multiple enabled networks to 776 * avoid getting forced to move into a worse ESS on 777 * single error if there are no other BSSes of the 778 * current ESS. 779 */ 780 limit = 0; 781 } 782 if (e->count > limit) { 783 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted " 784 "(count=%d limit=%d)", e->count, limit); 785 return NULL; 786 } 787 } 788 789 if (bss->ssid_len == 0) { 790 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known"); 791 return NULL; 792 } 793 794 if (disallowed_bssid(wpa_s, bss->bssid)) { 795 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID disallowed"); 796 return NULL; 797 } 798 799 if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) { 800 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID disallowed"); 801 return NULL; 802 } 803 804 wpa = wpa_ie_len > 0 || rsn_ie_len > 0; 805 806 for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) { 807 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0); 808 int res; 809 810 if (wpas_network_disabled(wpa_s, ssid)) { 811 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled"); 812 continue; 813 } 814 815 res = wpas_temp_disabled(wpa_s, ssid); 816 if (res > 0) { 817 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled " 818 "temporarily for %d second(s)", res); 819 continue; 820 } 821 822#ifdef CONFIG_WPS 823 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) { 824 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted " 825 "(WPS)"); 826 continue; 827 } 828 829 if (wpa && ssid->ssid_len == 0 && 830 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss)) 831 check_ssid = 0; 832 833 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 834 /* Only allow wildcard SSID match if an AP 835 * advertises active WPS operation that matches 836 * with our mode. */ 837 check_ssid = 1; 838 if (ssid->ssid_len == 0 && 839 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss)) 840 check_ssid = 0; 841 } 842#endif /* CONFIG_WPS */ 843 844 if (ssid->bssid_set && ssid->ssid_len == 0 && 845 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0) 846 check_ssid = 0; 847 848 if (check_ssid && 849 (bss->ssid_len != ssid->ssid_len || 850 os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) { 851 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch"); 852 continue; 853 } 854 855 if (ssid->bssid_set && 856 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) { 857 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch"); 858 continue; 859 } 860 861 /* check blacklist */ 862 if (ssid->num_bssid_blacklist && 863 addr_in_list(bss->bssid, ssid->bssid_blacklist, 864 ssid->num_bssid_blacklist)) { 865 wpa_dbg(wpa_s, MSG_DEBUG, 866 " skip - BSSID blacklisted"); 867 continue; 868 } 869 870 /* if there is a whitelist, only accept those APs */ 871 if (ssid->num_bssid_whitelist && 872 !addr_in_list(bss->bssid, ssid->bssid_whitelist, 873 ssid->num_bssid_whitelist)) { 874 wpa_dbg(wpa_s, MSG_DEBUG, 875 " skip - BSSID not in whitelist"); 876 continue; 877 } 878 879 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss)) 880 continue; 881 882 if (!osen && !wpa && 883 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) && 884 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) && 885 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) { 886 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network " 887 "not allowed"); 888 continue; 889 } 890 891 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) && 892 has_wep_key(ssid)) { 893 wpa_dbg(wpa_s, MSG_DEBUG, " skip - ignore WPA/WPA2 AP for WEP network block"); 894 continue; 895 } 896 897 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) { 898 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-OSEN network " 899 "not allowed"); 900 continue; 901 } 902 903 if (!wpa_supplicant_match_privacy(bss, ssid)) { 904 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy " 905 "mismatch"); 906 continue; 907 } 908 909 if (!bss_is_ess(bss)) { 910 wpa_dbg(wpa_s, MSG_DEBUG, " skip - not ESS network"); 911 continue; 912 } 913 914 if (!freq_allowed(ssid->freq_list, bss->freq)) { 915 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not " 916 "allowed"); 917 continue; 918 } 919 920 if (!rate_match(wpa_s, bss)) { 921 wpa_dbg(wpa_s, MSG_DEBUG, " skip - rate sets do " 922 "not match"); 923 continue; 924 } 925 926#ifdef CONFIG_P2P 927 if (ssid->p2p_group && 928 !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) && 929 !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) { 930 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P IE seen"); 931 continue; 932 } 933 934 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) { 935 struct wpabuf *p2p_ie; 936 u8 dev_addr[ETH_ALEN]; 937 938 ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE); 939 if (ie == NULL) { 940 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no P2P element"); 941 continue; 942 } 943 p2p_ie = wpa_bss_get_vendor_ie_multi( 944 bss, P2P_IE_VENDOR_TYPE); 945 if (p2p_ie == NULL) { 946 wpa_dbg(wpa_s, MSG_DEBUG, " skip - could not fetch P2P element"); 947 continue; 948 } 949 950 if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0 951 || os_memcmp(dev_addr, ssid->go_p2p_dev_addr, 952 ETH_ALEN) != 0) { 953 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no matching GO P2P Device Address in P2P element"); 954 wpabuf_free(p2p_ie); 955 continue; 956 } 957 wpabuf_free(p2p_ie); 958 } 959 960 /* 961 * TODO: skip the AP if its P2P IE has Group Formation 962 * bit set in the P2P Group Capability Bitmap and we 963 * are not in Group Formation with that device. 964 */ 965#endif /* CONFIG_P2P */ 966 967 /* Matching configuration found */ 968 return ssid; 969 } 970 971 /* No matching configuration found */ 972 return NULL; 973} 974 975 976static struct wpa_bss * 977wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s, 978 struct wpa_ssid *group, 979 struct wpa_ssid **selected_ssid, 980 int only_first_ssid) 981{ 982 unsigned int i; 983 984 if (only_first_ssid) 985 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d", 986 group->id); 987 else 988 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d", 989 group->priority); 990 991 for (i = 0; i < wpa_s->last_scan_res_used; i++) { 992 struct wpa_bss *bss = wpa_s->last_scan_res[i]; 993 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group, 994 only_first_ssid); 995 if (!*selected_ssid) 996 continue; 997 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR 998 " ssid='%s'", 999 MAC2STR(bss->bssid), 1000 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 1001 return bss; 1002 } 1003 1004 return NULL; 1005} 1006 1007 1008struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s, 1009 struct wpa_ssid **selected_ssid) 1010{ 1011 struct wpa_bss *selected = NULL; 1012 int prio; 1013 struct wpa_ssid *next_ssid = NULL; 1014 1015 if (wpa_s->last_scan_res == NULL || 1016 wpa_s->last_scan_res_used == 0) 1017 return NULL; /* no scan results from last update */ 1018 1019 if (wpa_s->next_ssid) { 1020 struct wpa_ssid *ssid; 1021 1022 /* check that next_ssid is still valid */ 1023 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1024 if (ssid == wpa_s->next_ssid) 1025 break; 1026 } 1027 next_ssid = ssid; 1028 wpa_s->next_ssid = NULL; 1029 } 1030 1031 while (selected == NULL) { 1032 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) { 1033 if (next_ssid && next_ssid->priority == 1034 wpa_s->conf->pssid[prio]->priority) { 1035 selected = wpa_supplicant_select_bss( 1036 wpa_s, next_ssid, selected_ssid, 1); 1037 if (selected) 1038 break; 1039 } 1040 selected = wpa_supplicant_select_bss( 1041 wpa_s, wpa_s->conf->pssid[prio], 1042 selected_ssid, 0); 1043 if (selected) 1044 break; 1045 } 1046 1047 if (selected == NULL && wpa_s->blacklist && 1048 !wpa_s->countermeasures) { 1049 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear " 1050 "blacklist and try again"); 1051 wpa_blacklist_clear(wpa_s); 1052 wpa_s->blacklist_cleared++; 1053 } else if (selected == NULL) 1054 break; 1055 } 1056 1057 return selected; 1058} 1059 1060 1061static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s, 1062 int timeout_sec, int timeout_usec) 1063{ 1064 if (!wpa_supplicant_enabled_networks(wpa_s)) { 1065 /* 1066 * No networks are enabled; short-circuit request so 1067 * we don't wait timeout seconds before transitioning 1068 * to INACTIVE state. 1069 */ 1070 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request " 1071 "since there are no enabled networks"); 1072 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); 1073 return; 1074 } 1075 1076 wpa_s->scan_for_connection = 1; 1077 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec); 1078} 1079 1080 1081int wpa_supplicant_connect(struct wpa_supplicant *wpa_s, 1082 struct wpa_bss *selected, 1083 struct wpa_ssid *ssid) 1084{ 1085 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) { 1086 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP 1087 "PBC session overlap"); 1088#ifdef CONFIG_P2P 1089 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 1090 wpa_s->p2p_in_provisioning) { 1091 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb, 1092 wpa_s, NULL); 1093 return -1; 1094 } 1095#endif /* CONFIG_P2P */ 1096 1097#ifdef CONFIG_WPS 1098 wpas_wps_cancel(wpa_s); 1099#endif /* CONFIG_WPS */ 1100 return -1; 1101 } 1102 1103 wpa_msg(wpa_s, MSG_DEBUG, 1104 "Considering connect request: reassociate: %d selected: " 1105 MACSTR " bssid: " MACSTR " pending: " MACSTR 1106 " wpa_state: %s ssid=%p current_ssid=%p", 1107 wpa_s->reassociate, MAC2STR(selected->bssid), 1108 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid), 1109 wpa_supplicant_state_txt(wpa_s->wpa_state), 1110 ssid, wpa_s->current_ssid); 1111 1112 /* 1113 * Do not trigger new association unless the BSSID has changed or if 1114 * reassociation is requested. If we are in process of associating with 1115 * the selected BSSID, do not trigger new attempt. 1116 */ 1117 if (wpa_s->reassociate || 1118 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 && 1119 ((wpa_s->wpa_state != WPA_ASSOCIATING && 1120 wpa_s->wpa_state != WPA_AUTHENTICATING) || 1121 (!is_zero_ether_addr(wpa_s->pending_bssid) && 1122 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) != 1123 0) || 1124 (is_zero_ether_addr(wpa_s->pending_bssid) && 1125 ssid != wpa_s->current_ssid)))) { 1126 if (wpa_supplicant_scard_init(wpa_s, ssid)) { 1127 wpa_supplicant_req_new_scan(wpa_s, 10, 0); 1128 return 0; 1129 } 1130 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR, 1131 MAC2STR(selected->bssid)); 1132 wpa_supplicant_associate(wpa_s, selected, ssid); 1133 } else { 1134 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to " 1135 "connect with the selected AP"); 1136 } 1137 1138 return 0; 1139} 1140 1141 1142static struct wpa_ssid * 1143wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s) 1144{ 1145 int prio; 1146 struct wpa_ssid *ssid; 1147 1148 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) { 1149 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext) 1150 { 1151 if (wpas_network_disabled(wpa_s, ssid)) 1152 continue; 1153 if (ssid->mode == IEEE80211_MODE_IBSS || 1154 ssid->mode == IEEE80211_MODE_AP || 1155 ssid->mode == IEEE80211_MODE_MESH) 1156 return ssid; 1157 } 1158 } 1159 return NULL; 1160} 1161 1162 1163/* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based 1164 * on BSS added and BSS changed events */ 1165static void wpa_supplicant_rsn_preauth_scan_results( 1166 struct wpa_supplicant *wpa_s) 1167{ 1168 struct wpa_bss *bss; 1169 1170 if (rsn_preauth_scan_results(wpa_s->wpa) < 0) 1171 return; 1172 1173 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1174 const u8 *ssid, *rsn; 1175 1176 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID); 1177 if (ssid == NULL) 1178 continue; 1179 1180 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 1181 if (rsn == NULL) 1182 continue; 1183 1184 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn); 1185 } 1186 1187} 1188 1189 1190static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s, 1191 struct wpa_bss *selected, 1192 struct wpa_ssid *ssid) 1193{ 1194 struct wpa_bss *current_bss = NULL; 1195 int min_diff; 1196 1197 if (wpa_s->reassociate) 1198 return 1; /* explicit request to reassociate */ 1199 if (wpa_s->wpa_state < WPA_ASSOCIATED) 1200 return 1; /* we are not associated; continue */ 1201 if (wpa_s->current_ssid == NULL) 1202 return 1; /* unknown current SSID */ 1203 if (wpa_s->current_ssid != ssid) 1204 return 1; /* different network block */ 1205 1206 if (wpas_driver_bss_selection(wpa_s)) 1207 return 0; /* Driver-based roaming */ 1208 1209 if (wpa_s->current_ssid->ssid) 1210 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid, 1211 wpa_s->current_ssid->ssid, 1212 wpa_s->current_ssid->ssid_len); 1213 if (!current_bss) 1214 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid); 1215 1216 if (!current_bss) 1217 return 1; /* current BSS not seen in scan results */ 1218 1219 if (current_bss == selected) 1220 return 0; 1221 1222 if (selected->last_update_idx > current_bss->last_update_idx) 1223 return 1; /* current BSS not seen in the last scan */ 1224 1225#ifndef CONFIG_NO_ROAMING 1226 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation"); 1227 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR 1228 " level=%d snr=%d est_throughput=%u", 1229 MAC2STR(current_bss->bssid), current_bss->level, 1230 current_bss->snr, current_bss->est_throughput); 1231 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR 1232 " level=%d snr=%d est_throughput=%u", 1233 MAC2STR(selected->bssid), selected->level, 1234 selected->snr, selected->est_throughput); 1235 1236 if (wpa_s->current_ssid->bssid_set && 1237 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) == 1238 0) { 1239 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS " 1240 "has preferred BSSID"); 1241 return 1; 1242 } 1243 1244 if (selected->est_throughput > current_bss->est_throughput + 5000) { 1245 wpa_dbg(wpa_s, MSG_DEBUG, 1246 "Allow reassociation - selected BSS has better estimated throughput"); 1247 return 1; 1248 } 1249 1250 if (current_bss->level < 0 && current_bss->level > selected->level) { 1251 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better " 1252 "signal level"); 1253 return 0; 1254 } 1255 1256 min_diff = 2; 1257 if (current_bss->level < 0) { 1258 if (current_bss->level < -85) 1259 min_diff = 1; 1260 else if (current_bss->level < -80) 1261 min_diff = 2; 1262 else if (current_bss->level < -75) 1263 min_diff = 3; 1264 else if (current_bss->level < -70) 1265 min_diff = 4; 1266 else 1267 min_diff = 5; 1268 } 1269 if (abs(current_bss->level - selected->level) < min_diff) { 1270 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference " 1271 "in signal level"); 1272 return 0; 1273 } 1274 1275 return 1; 1276#else /* CONFIG_NO_ROAMING */ 1277 return 0; 1278#endif /* CONFIG_NO_ROAMING */ 1279} 1280 1281 1282/* Return != 0 if no scan results could be fetched or if scan results should not 1283 * be shared with other virtual interfaces. */ 1284static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s, 1285 union wpa_event_data *data, 1286 int own_request) 1287{ 1288 struct wpa_scan_results *scan_res = NULL; 1289 int ret = 0; 1290 int ap = 0; 1291#ifndef CONFIG_NO_RANDOM_POOL 1292 size_t i, num; 1293#endif /* CONFIG_NO_RANDOM_POOL */ 1294 1295#ifdef CONFIG_AP 1296 if (wpa_s->ap_iface) 1297 ap = 1; 1298#endif /* CONFIG_AP */ 1299 1300 wpa_supplicant_notify_scanning(wpa_s, 0); 1301 1302 scan_res = wpa_supplicant_get_scan_results(wpa_s, 1303 data ? &data->scan_info : 1304 NULL, 1); 1305 if (scan_res == NULL) { 1306 if (wpa_s->conf->ap_scan == 2 || ap || 1307 wpa_s->scan_res_handler == scan_only_handler) 1308 return -1; 1309 if (!own_request) 1310 return -1; 1311 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try " 1312 "scanning again"); 1313 wpa_supplicant_req_new_scan(wpa_s, 1, 0); 1314 ret = -1; 1315 goto scan_work_done; 1316 } 1317 1318#ifndef CONFIG_NO_RANDOM_POOL 1319 num = scan_res->num; 1320 if (num > 10) 1321 num = 10; 1322 for (i = 0; i < num; i++) { 1323 u8 buf[5]; 1324 struct wpa_scan_res *res = scan_res->res[i]; 1325 buf[0] = res->bssid[5]; 1326 buf[1] = res->qual & 0xff; 1327 buf[2] = res->noise & 0xff; 1328 buf[3] = res->level & 0xff; 1329 buf[4] = res->tsf & 0xff; 1330 random_add_randomness(buf, sizeof(buf)); 1331 } 1332#endif /* CONFIG_NO_RANDOM_POOL */ 1333 1334 if (own_request && wpa_s->scan_res_handler && 1335 (wpa_s->own_scan_running || !wpa_s->radio->external_scan_running)) { 1336 void (*scan_res_handler)(struct wpa_supplicant *wpa_s, 1337 struct wpa_scan_results *scan_res); 1338 1339 scan_res_handler = wpa_s->scan_res_handler; 1340 wpa_s->scan_res_handler = NULL; 1341 scan_res_handler(wpa_s, scan_res); 1342 ret = -2; 1343 goto scan_work_done; 1344 } 1345 1346 if (ap) { 1347 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode"); 1348#ifdef CONFIG_AP 1349 if (wpa_s->ap_iface->scan_cb) 1350 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface); 1351#endif /* CONFIG_AP */ 1352 goto scan_work_done; 1353 } 1354 1355 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)", 1356 wpa_s->own_scan_running, wpa_s->radio->external_scan_running); 1357 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && 1358 wpa_s->manual_scan_use_id && wpa_s->own_scan_running) { 1359 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u", 1360 wpa_s->manual_scan_id); 1361 wpa_s->manual_scan_use_id = 0; 1362 } else { 1363 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS); 1364 } 1365 wpas_notify_scan_results(wpa_s); 1366 1367 wpas_notify_scan_done(wpa_s, 1); 1368 1369 if (!wpa_s->own_scan_running && wpa_s->radio->external_scan_running) { 1370 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection"); 1371 wpa_scan_results_free(scan_res); 1372 return 0; 1373 } 1374 1375 if (wnm_scan_process(wpa_s, 1) > 0) 1376 goto scan_work_done; 1377 1378 if (sme_proc_obss_scan(wpa_s) > 0) 1379 goto scan_work_done; 1380 1381 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) 1382 goto scan_work_done; 1383 1384 if (autoscan_notify_scan(wpa_s, scan_res)) 1385 goto scan_work_done; 1386 1387 if (wpa_s->disconnected) { 1388 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1389 goto scan_work_done; 1390 } 1391 1392 if (!wpas_driver_bss_selection(wpa_s) && 1393 bgscan_notify_scan(wpa_s, scan_res) == 1) 1394 goto scan_work_done; 1395 1396 wpas_wps_update_ap_info(wpa_s, scan_res); 1397 1398 wpa_scan_results_free(scan_res); 1399 1400 if (wpa_s->scan_work) { 1401 struct wpa_radio_work *work = wpa_s->scan_work; 1402 wpa_s->scan_work = NULL; 1403 radio_work_done(work); 1404 } 1405 1406 return wpas_select_network_from_last_scan(wpa_s, 1, own_request); 1407 1408scan_work_done: 1409 wpa_scan_results_free(scan_res); 1410 if (wpa_s->scan_work) { 1411 struct wpa_radio_work *work = wpa_s->scan_work; 1412 wpa_s->scan_work = NULL; 1413 radio_work_done(work); 1414 } 1415 return ret; 1416} 1417 1418 1419static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s, 1420 int new_scan, int own_request) 1421{ 1422 struct wpa_bss *selected; 1423 struct wpa_ssid *ssid = NULL; 1424 1425 if (wpa_s->p2p_mgmt) 1426 return 0; /* no normal connection on p2p_mgmt interface */ 1427 1428 selected = wpa_supplicant_pick_network(wpa_s, &ssid); 1429 1430 if (selected) { 1431 int skip; 1432 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid); 1433 if (skip) { 1434 if (new_scan) 1435 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 1436 return 0; 1437 } 1438 1439 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) { 1440 wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed"); 1441 return -1; 1442 } 1443 if (new_scan) 1444 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 1445 /* 1446 * Do not notify other virtual radios of scan results since we do not 1447 * want them to start other associations at the same time. 1448 */ 1449 return 1; 1450 } else { 1451#ifdef CONFIG_MESH 1452 if (wpa_s->ifmsh) { 1453 wpa_msg(wpa_s, MSG_INFO, 1454 "Avoiding join because we already joined a mesh group"); 1455 return 0; 1456 } 1457#endif /* CONFIG_MESH */ 1458 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found"); 1459 ssid = wpa_supplicant_pick_new_network(wpa_s); 1460 if (ssid) { 1461 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network"); 1462 wpa_supplicant_associate(wpa_s, NULL, ssid); 1463 if (new_scan) 1464 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 1465 } else if (own_request) { 1466 /* 1467 * No SSID found. If SCAN results are as a result of 1468 * own scan request and not due to a scan request on 1469 * another shared interface, try another scan. 1470 */ 1471 int timeout_sec = wpa_s->scan_interval; 1472 int timeout_usec = 0; 1473#ifdef CONFIG_P2P 1474 int res; 1475 1476 res = wpas_p2p_scan_no_go_seen(wpa_s); 1477 if (res == 2) 1478 return 2; 1479 if (res == 1) 1480 return 0; 1481 1482 if (wpa_s->p2p_in_provisioning || 1483 wpa_s->show_group_started || 1484 wpa_s->p2p_in_invitation) { 1485 /* 1486 * Use shorter wait during P2P Provisioning 1487 * state and during P2P join-a-group operation 1488 * to speed up group formation. 1489 */ 1490 timeout_sec = 0; 1491 timeout_usec = 250000; 1492 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1493 timeout_usec); 1494 return 0; 1495 } 1496#endif /* CONFIG_P2P */ 1497#ifdef CONFIG_INTERWORKING 1498 if (wpa_s->conf->auto_interworking && 1499 wpa_s->conf->interworking && 1500 wpa_s->conf->cred) { 1501 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: " 1502 "start ANQP fetch since no matching " 1503 "networks found"); 1504 wpa_s->network_select = 1; 1505 wpa_s->auto_network_select = 1; 1506 interworking_start_fetch_anqp(wpa_s); 1507 return 1; 1508 } 1509#endif /* CONFIG_INTERWORKING */ 1510#ifdef CONFIG_WPS 1511 if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) { 1512 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing"); 1513 timeout_sec = 0; 1514 timeout_usec = 500000; 1515 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1516 timeout_usec); 1517 return 0; 1518 } 1519#endif /* CONFIG_WPS */ 1520 if (wpa_supplicant_req_sched_scan(wpa_s)) 1521 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1522 timeout_usec); 1523 } 1524 } 1525 return 0; 1526} 1527 1528 1529static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s, 1530 union wpa_event_data *data) 1531{ 1532 struct wpa_supplicant *ifs; 1533 int res; 1534 1535 res = _wpa_supplicant_event_scan_results(wpa_s, data, 1); 1536 if (res == 2) { 1537 /* 1538 * Interface may have been removed, so must not dereference 1539 * wpa_s after this. 1540 */ 1541 return 1; 1542 } 1543 if (res != 0) { 1544 /* 1545 * If no scan results could be fetched, then no need to 1546 * notify those interfaces that did not actually request 1547 * this scan. Similarly, if scan results started a new operation on this 1548 * interface, do not notify other interfaces to avoid concurrent 1549 * operations during a connection attempt. 1550 */ 1551 return 0; 1552 } 1553 1554 /* 1555 * Check other interfaces to see if they share the same radio. If 1556 * so, they get updated with this same scan info. 1557 */ 1558 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 1559 radio_list) { 1560 if (ifs != wpa_s) { 1561 wpa_printf(MSG_DEBUG, "%s: Updating scan results from " 1562 "sibling", ifs->ifname); 1563 _wpa_supplicant_event_scan_results(ifs, data, 0); 1564 } 1565 } 1566 1567 return 0; 1568} 1569 1570#endif /* CONFIG_NO_SCAN_PROCESSING */ 1571 1572 1573int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s) 1574{ 1575#ifdef CONFIG_NO_SCAN_PROCESSING 1576 return -1; 1577#else /* CONFIG_NO_SCAN_PROCESSING */ 1578 struct os_reltime now; 1579 1580 if (wpa_s->last_scan_res_used <= 0) 1581 return -1; 1582 1583 os_get_reltime(&now); 1584 if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) { 1585 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results"); 1586 return -1; 1587 } 1588 1589 return wpas_select_network_from_last_scan(wpa_s, 0, 1); 1590#endif /* CONFIG_NO_SCAN_PROCESSING */ 1591} 1592 1593#ifdef CONFIG_WNM 1594 1595static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx) 1596{ 1597 struct wpa_supplicant *wpa_s = eloop_ctx; 1598 1599 if (wpa_s->wpa_state < WPA_ASSOCIATED) 1600 return; 1601 1602 if (!wpa_s->no_keep_alive) { 1603 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR, 1604 MAC2STR(wpa_s->bssid)); 1605 /* TODO: could skip this if normal data traffic has been sent */ 1606 /* TODO: Consider using some more appropriate data frame for 1607 * this */ 1608 if (wpa_s->l2) 1609 l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800, 1610 (u8 *) "", 0); 1611 } 1612 1613#ifdef CONFIG_SME 1614 if (wpa_s->sme.bss_max_idle_period) { 1615 unsigned int msec; 1616 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */ 1617 if (msec > 100) 1618 msec -= 100; 1619 eloop_register_timeout(msec / 1000, msec % 1000 * 1000, 1620 wnm_bss_keep_alive, wpa_s, NULL); 1621 } 1622#endif /* CONFIG_SME */ 1623} 1624 1625 1626static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s, 1627 const u8 *ies, size_t ies_len) 1628{ 1629 struct ieee802_11_elems elems; 1630 1631 if (ies == NULL) 1632 return; 1633 1634 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) 1635 return; 1636 1637#ifdef CONFIG_SME 1638 if (elems.bss_max_idle_period) { 1639 unsigned int msec; 1640 wpa_s->sme.bss_max_idle_period = 1641 WPA_GET_LE16(elems.bss_max_idle_period); 1642 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 " 1643 "TU)%s", wpa_s->sme.bss_max_idle_period, 1644 (elems.bss_max_idle_period[2] & 0x01) ? 1645 " (protected keep-live required)" : ""); 1646 if (wpa_s->sme.bss_max_idle_period == 0) 1647 wpa_s->sme.bss_max_idle_period = 1; 1648 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) { 1649 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL); 1650 /* msec times 1000 */ 1651 msec = wpa_s->sme.bss_max_idle_period * 1024; 1652 if (msec > 100) 1653 msec -= 100; 1654 eloop_register_timeout(msec / 1000, msec % 1000 * 1000, 1655 wnm_bss_keep_alive, wpa_s, 1656 NULL); 1657 } 1658 } 1659#endif /* CONFIG_SME */ 1660} 1661 1662#endif /* CONFIG_WNM */ 1663 1664 1665void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s) 1666{ 1667#ifdef CONFIG_WNM 1668 eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL); 1669#endif /* CONFIG_WNM */ 1670} 1671 1672 1673#ifdef CONFIG_INTERWORKING 1674 1675static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map, 1676 size_t len) 1677{ 1678 int res; 1679 1680 wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len); 1681 res = wpa_drv_set_qos_map(wpa_s, qos_map, len); 1682 if (res) { 1683 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver"); 1684 } 1685 1686 return res; 1687} 1688 1689 1690static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s, 1691 const u8 *ies, size_t ies_len) 1692{ 1693 struct ieee802_11_elems elems; 1694 1695 if (ies == NULL) 1696 return; 1697 1698 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) 1699 return; 1700 1701 if (elems.qos_map_set) { 1702 wpas_qos_map_set(wpa_s, elems.qos_map_set, 1703 elems.qos_map_set_len); 1704 } 1705} 1706 1707#endif /* CONFIG_INTERWORKING */ 1708 1709 1710static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s, 1711 union wpa_event_data *data) 1712{ 1713 int l, len, found = 0, wpa_found, rsn_found; 1714 const u8 *p; 1715#ifdef CONFIG_IEEE80211R 1716 u8 bssid[ETH_ALEN]; 1717#endif /* CONFIG_IEEE80211R */ 1718 1719 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event"); 1720 if (data->assoc_info.req_ies) 1721 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies, 1722 data->assoc_info.req_ies_len); 1723 if (data->assoc_info.resp_ies) { 1724 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies, 1725 data->assoc_info.resp_ies_len); 1726#ifdef CONFIG_TDLS 1727 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies, 1728 data->assoc_info.resp_ies_len); 1729#endif /* CONFIG_TDLS */ 1730#ifdef CONFIG_WNM 1731 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies, 1732 data->assoc_info.resp_ies_len); 1733#endif /* CONFIG_WNM */ 1734#ifdef CONFIG_INTERWORKING 1735 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies, 1736 data->assoc_info.resp_ies_len); 1737#endif /* CONFIG_INTERWORKING */ 1738 } 1739 if (data->assoc_info.beacon_ies) 1740 wpa_hexdump(MSG_DEBUG, "beacon_ies", 1741 data->assoc_info.beacon_ies, 1742 data->assoc_info.beacon_ies_len); 1743 if (data->assoc_info.freq) 1744 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz", 1745 data->assoc_info.freq); 1746 1747 p = data->assoc_info.req_ies; 1748 l = data->assoc_info.req_ies_len; 1749 1750 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */ 1751 while (p && l >= 2) { 1752 len = p[1] + 2; 1753 if (len > l) { 1754 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info", 1755 p, l); 1756 break; 1757 } 1758 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 && 1759 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) || 1760 (p[0] == WLAN_EID_RSN && p[1] >= 2)) { 1761 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len)) 1762 break; 1763 found = 1; 1764 wpa_find_assoc_pmkid(wpa_s); 1765 break; 1766 } 1767 l -= len; 1768 p += len; 1769 } 1770 if (!found && data->assoc_info.req_ies) 1771 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 1772 1773#ifdef CONFIG_IEEE80211R 1774#ifdef CONFIG_SME 1775 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) { 1776 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 || 1777 wpa_ft_validate_reassoc_resp(wpa_s->wpa, 1778 data->assoc_info.resp_ies, 1779 data->assoc_info.resp_ies_len, 1780 bssid) < 0) { 1781 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of " 1782 "Reassociation Response failed"); 1783 wpa_supplicant_deauthenticate( 1784 wpa_s, WLAN_REASON_INVALID_IE); 1785 return -1; 1786 } 1787 } 1788 1789 p = data->assoc_info.resp_ies; 1790 l = data->assoc_info.resp_ies_len; 1791 1792#ifdef CONFIG_WPS_STRICT 1793 if (p && wpa_s->current_ssid && 1794 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) { 1795 struct wpabuf *wps; 1796 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE); 1797 if (wps == NULL) { 1798 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not " 1799 "include WPS IE in (Re)Association Response"); 1800 return -1; 1801 } 1802 1803 if (wps_validate_assoc_resp(wps) < 0) { 1804 wpabuf_free(wps); 1805 wpa_supplicant_deauthenticate( 1806 wpa_s, WLAN_REASON_INVALID_IE); 1807 return -1; 1808 } 1809 wpabuf_free(wps); 1810 } 1811#endif /* CONFIG_WPS_STRICT */ 1812 1813 /* Go through the IEs and make a copy of the MDIE, if present. */ 1814 while (p && l >= 2) { 1815 len = p[1] + 2; 1816 if (len > l) { 1817 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info", 1818 p, l); 1819 break; 1820 } 1821 if (p[0] == WLAN_EID_MOBILITY_DOMAIN && 1822 p[1] >= MOBILITY_DOMAIN_ID_LEN) { 1823 wpa_s->sme.ft_used = 1; 1824 os_memcpy(wpa_s->sme.mobility_domain, p + 2, 1825 MOBILITY_DOMAIN_ID_LEN); 1826 break; 1827 } 1828 l -= len; 1829 p += len; 1830 } 1831#endif /* CONFIG_SME */ 1832 1833 /* Process FT when SME is in the driver */ 1834 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) && 1835 wpa_ft_is_completed(wpa_s->wpa)) { 1836 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 || 1837 wpa_ft_validate_reassoc_resp(wpa_s->wpa, 1838 data->assoc_info.resp_ies, 1839 data->assoc_info.resp_ies_len, 1840 bssid) < 0) { 1841 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of " 1842 "Reassociation Response failed"); 1843 wpa_supplicant_deauthenticate( 1844 wpa_s, WLAN_REASON_INVALID_IE); 1845 return -1; 1846 } 1847 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done"); 1848 } 1849 1850 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies, 1851 data->assoc_info.resp_ies_len); 1852#endif /* CONFIG_IEEE80211R */ 1853 1854 /* WPA/RSN IE from Beacon/ProbeResp */ 1855 p = data->assoc_info.beacon_ies; 1856 l = data->assoc_info.beacon_ies_len; 1857 1858 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present. 1859 */ 1860 wpa_found = rsn_found = 0; 1861 while (p && l >= 2) { 1862 len = p[1] + 2; 1863 if (len > l) { 1864 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies", 1865 p, l); 1866 break; 1867 } 1868 if (!wpa_found && 1869 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 && 1870 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) { 1871 wpa_found = 1; 1872 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len); 1873 } 1874 1875 if (!rsn_found && 1876 p[0] == WLAN_EID_RSN && p[1] >= 2) { 1877 rsn_found = 1; 1878 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len); 1879 } 1880 1881 l -= len; 1882 p += len; 1883 } 1884 1885 if (!wpa_found && data->assoc_info.beacon_ies) 1886 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0); 1887 if (!rsn_found && data->assoc_info.beacon_ies) 1888 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0); 1889 if (wpa_found || rsn_found) 1890 wpa_s->ap_ies_from_associnfo = 1; 1891 1892 if (wpa_s->assoc_freq && data->assoc_info.freq && 1893 wpa_s->assoc_freq != data->assoc_info.freq) { 1894 wpa_printf(MSG_DEBUG, "Operating frequency changed from " 1895 "%u to %u MHz", 1896 wpa_s->assoc_freq, data->assoc_info.freq); 1897 wpa_supplicant_update_scan_results(wpa_s); 1898 } 1899 1900 wpa_s->assoc_freq = data->assoc_info.freq; 1901 1902 return 0; 1903} 1904 1905 1906static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s) 1907{ 1908 const u8 *bss_wpa = NULL, *bss_rsn = NULL; 1909 1910 if (!wpa_s->current_bss || !wpa_s->current_ssid) 1911 return -1; 1912 1913 if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt)) 1914 return 0; 1915 1916 bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss, 1917 WPA_IE_VENDOR_TYPE); 1918 bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN); 1919 1920 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa, 1921 bss_wpa ? 2 + bss_wpa[1] : 0) || 1922 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn, 1923 bss_rsn ? 2 + bss_rsn[1] : 0)) 1924 return -1; 1925 1926 return 0; 1927} 1928 1929 1930static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s, 1931 union wpa_event_data *data) 1932{ 1933 u8 bssid[ETH_ALEN]; 1934 int ft_completed; 1935 1936#ifdef CONFIG_AP 1937 if (wpa_s->ap_iface) { 1938 if (!data) 1939 return; 1940 hostapd_notif_assoc(wpa_s->ap_iface->bss[0], 1941 data->assoc_info.addr, 1942 data->assoc_info.req_ies, 1943 data->assoc_info.req_ies_len, 1944 data->assoc_info.reassoc); 1945 return; 1946 } 1947#endif /* CONFIG_AP */ 1948 1949 ft_completed = wpa_ft_is_completed(wpa_s->wpa); 1950 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0) 1951 return; 1952 1953 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) { 1954 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID"); 1955 wpa_supplicant_deauthenticate( 1956 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1957 return; 1958 } 1959 1960 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED); 1961 if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) { 1962 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID=" 1963 MACSTR, MAC2STR(bssid)); 1964 random_add_randomness(bssid, ETH_ALEN); 1965 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN); 1966 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1967 wpas_notify_bssid_changed(wpa_s); 1968 1969 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) { 1970 wpa_clear_keys(wpa_s, bssid); 1971 } 1972 if (wpa_supplicant_select_config(wpa_s) < 0) { 1973 wpa_supplicant_deauthenticate( 1974 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1975 return; 1976 } 1977 1978#ifdef ANDROID 1979 if (wpa_s->conf->ap_scan == 1) { 1980#else 1981 if (wpa_s->conf->ap_scan == 1 && 1982 wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) { 1983#endif 1984 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0) 1985 wpa_msg(wpa_s, MSG_WARNING, 1986 "WPA/RSN IEs not updated"); 1987 } 1988 } 1989 1990#ifdef CONFIG_SME 1991 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN); 1992 wpa_s->sme.prev_bssid_set = 1; 1993 wpa_s->sme.last_unprot_disconnect.sec = 0; 1994#endif /* CONFIG_SME */ 1995 1996 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid)); 1997 if (wpa_s->current_ssid) { 1998 /* When using scanning (ap_scan=1), SIM PC/SC interface can be 1999 * initialized before association, but for other modes, 2000 * initialize PC/SC here, if the current configuration needs 2001 * smartcard or SIM/USIM. */ 2002 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid); 2003 } 2004 wpa_sm_notify_assoc(wpa_s->wpa, bssid); 2005 if (wpa_s->l2) 2006 l2_packet_notify_auth_start(wpa_s->l2); 2007 2008 /* 2009 * Set portEnabled first to FALSE in order to get EAP state machine out 2010 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE 2011 * state machine may transit to AUTHENTICATING state based on obsolete 2012 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to 2013 * AUTHENTICATED without ever giving chance to EAP state machine to 2014 * reset the state. 2015 */ 2016 if (!ft_completed) { 2017 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 2018 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 2019 } 2020 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed) 2021 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 2022 /* 802.1X::portControl = Auto */ 2023 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE); 2024 wpa_s->eapol_received = 0; 2025 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 2026 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE || 2027 (wpa_s->current_ssid && 2028 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) { 2029 if (wpa_s->current_ssid && 2030 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE && 2031 (wpa_s->drv_flags & 2032 WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) { 2033 /* 2034 * Set the key after having received joined-IBSS event 2035 * from the driver. 2036 */ 2037 wpa_supplicant_set_wpa_none_key(wpa_s, 2038 wpa_s->current_ssid); 2039 } 2040 wpa_supplicant_cancel_auth_timeout(wpa_s); 2041 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2042 } else if (!ft_completed) { 2043 /* Timeout for receiving the first EAPOL packet */ 2044 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0); 2045 } 2046 wpa_supplicant_cancel_scan(wpa_s); 2047 2048 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 2049 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { 2050 /* 2051 * We are done; the driver will take care of RSN 4-way 2052 * handshake. 2053 */ 2054 wpa_supplicant_cancel_auth_timeout(wpa_s); 2055 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2056 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2057 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 2058 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 2059 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) { 2060 /* 2061 * The driver will take care of RSN 4-way handshake, so we need 2062 * to allow EAPOL supplicant to complete its work without 2063 * waiting for WPA supplicant. 2064 */ 2065 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2066 } else if (ft_completed) { 2067 /* 2068 * FT protocol completed - make sure EAPOL state machine ends 2069 * up in authenticated. 2070 */ 2071 wpa_supplicant_cancel_auth_timeout(wpa_s); 2072 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2073 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2074 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 2075 } 2076 2077 wpa_s->last_eapol_matches_bssid = 0; 2078 2079 if (wpa_s->pending_eapol_rx) { 2080 struct os_reltime now, age; 2081 os_get_reltime(&now); 2082 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age); 2083 if (age.sec == 0 && age.usec < 100000 && 2084 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) == 2085 0) { 2086 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL " 2087 "frame that was received just before " 2088 "association notification"); 2089 wpa_supplicant_rx_eapol( 2090 wpa_s, wpa_s->pending_eapol_rx_src, 2091 wpabuf_head(wpa_s->pending_eapol_rx), 2092 wpabuf_len(wpa_s->pending_eapol_rx)); 2093 } 2094 wpabuf_free(wpa_s->pending_eapol_rx); 2095 wpa_s->pending_eapol_rx = NULL; 2096 } 2097 2098 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 2099 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 2100 wpa_s->current_ssid && 2101 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) { 2102 /* Set static WEP keys again */ 2103 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid); 2104 } 2105 2106#ifdef CONFIG_IBSS_RSN 2107 if (wpa_s->current_ssid && 2108 wpa_s->current_ssid->mode == WPAS_MODE_IBSS && 2109 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 2110 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE && 2111 wpa_s->ibss_rsn == NULL) { 2112 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s); 2113 if (!wpa_s->ibss_rsn) { 2114 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN"); 2115 wpa_supplicant_deauthenticate( 2116 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2117 return; 2118 } 2119 2120 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk); 2121 } 2122#endif /* CONFIG_IBSS_RSN */ 2123 2124 wpas_wps_notify_assoc(wpa_s, bssid); 2125 2126 if (data) { 2127 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies, 2128 data->assoc_info.resp_ies_len, 2129 &data->assoc_info.wmm_params); 2130 2131 if (wpa_s->reassoc_same_bss) 2132 wmm_ac_restore_tspecs(wpa_s); 2133 } 2134} 2135 2136 2137static int disconnect_reason_recoverable(u16 reason_code) 2138{ 2139 return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY || 2140 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA || 2141 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA; 2142} 2143 2144 2145static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s, 2146 u16 reason_code, 2147 int locally_generated) 2148{ 2149 const u8 *bssid; 2150 2151 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 2152 /* 2153 * At least Host AP driver and a Prism3 card seemed to be 2154 * generating streams of disconnected events when configuring 2155 * IBSS for WPA-None. Ignore them for now. 2156 */ 2157 return; 2158 } 2159 2160 bssid = wpa_s->bssid; 2161 if (is_zero_ether_addr(bssid)) 2162 bssid = wpa_s->pending_bssid; 2163 2164 if (!is_zero_ether_addr(bssid) || 2165 wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2166 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR 2167 " reason=%d%s", 2168 MAC2STR(bssid), reason_code, 2169 locally_generated ? " locally_generated=1" : ""); 2170 } 2171} 2172 2173 2174static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code, 2175 int locally_generated) 2176{ 2177 if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE || 2178 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) 2179 return 0; /* Not in 4-way handshake with PSK */ 2180 2181 /* 2182 * It looks like connection was lost while trying to go through PSK 2183 * 4-way handshake. Filter out known disconnection cases that are caused 2184 * by something else than PSK mismatch to avoid confusing reports. 2185 */ 2186 2187 if (locally_generated) { 2188 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS) 2189 return 0; 2190 } 2191 2192 return 1; 2193} 2194 2195 2196static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s, 2197 u16 reason_code, 2198 int locally_generated) 2199{ 2200 const u8 *bssid; 2201 int authenticating; 2202 u8 prev_pending_bssid[ETH_ALEN]; 2203 struct wpa_bss *fast_reconnect = NULL; 2204 struct wpa_ssid *fast_reconnect_ssid = NULL; 2205 struct wpa_ssid *last_ssid; 2206 2207 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING; 2208 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN); 2209 2210 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 2211 /* 2212 * At least Host AP driver and a Prism3 card seemed to be 2213 * generating streams of disconnected events when configuring 2214 * IBSS for WPA-None. Ignore them for now. 2215 */ 2216 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in " 2217 "IBSS/WPA-None mode"); 2218 return; 2219 } 2220 2221 if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) { 2222 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - " 2223 "pre-shared key may be incorrect"); 2224 if (wpas_p2p_4way_hs_failed(wpa_s) > 0) 2225 return; /* P2P group removed */ 2226 wpas_auth_failed(wpa_s, "WRONG_KEY"); 2227 } 2228 if (!wpa_s->disconnected && 2229 (!wpa_s->auto_reconnect_disabled || 2230 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS || 2231 wpas_wps_searching(wpa_s))) { 2232 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to " 2233 "reconnect (wps=%d/%d wpa_state=%d)", 2234 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS, 2235 wpas_wps_searching(wpa_s), 2236 wpa_s->wpa_state); 2237 if (wpa_s->wpa_state == WPA_COMPLETED && 2238 wpa_s->current_ssid && 2239 wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 2240 !locally_generated && 2241 disconnect_reason_recoverable(reason_code)) { 2242 /* 2243 * It looks like the AP has dropped association with 2244 * us, but could allow us to get back in. Try to 2245 * reconnect to the same BSS without full scan to save 2246 * time for some common cases. 2247 */ 2248 fast_reconnect = wpa_s->current_bss; 2249 fast_reconnect_ssid = wpa_s->current_ssid; 2250 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING) 2251 wpa_supplicant_req_scan(wpa_s, 0, 100000); 2252 else 2253 wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new " 2254 "immediate scan"); 2255 } else { 2256 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not " 2257 "try to re-connect"); 2258 wpa_s->reassociate = 0; 2259 wpa_s->disconnected = 1; 2260 wpa_supplicant_cancel_sched_scan(wpa_s); 2261 } 2262 bssid = wpa_s->bssid; 2263 if (is_zero_ether_addr(bssid)) 2264 bssid = wpa_s->pending_bssid; 2265 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 2266 wpas_connection_failed(wpa_s, bssid); 2267 wpa_sm_notify_disassoc(wpa_s->wpa); 2268 if (locally_generated) 2269 wpa_s->disconnect_reason = -reason_code; 2270 else 2271 wpa_s->disconnect_reason = reason_code; 2272 wpas_notify_disconnect_reason(wpa_s); 2273 if (wpa_supplicant_dynamic_keys(wpa_s)) { 2274 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys"); 2275 wpa_clear_keys(wpa_s, wpa_s->bssid); 2276 } 2277 last_ssid = wpa_s->current_ssid; 2278 wpa_supplicant_mark_disassoc(wpa_s); 2279 2280 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) { 2281 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid); 2282 wpa_s->current_ssid = last_ssid; 2283 } 2284 2285 if (fast_reconnect && 2286 !wpas_network_disabled(wpa_s, fast_reconnect_ssid) && 2287 !disallowed_bssid(wpa_s, fast_reconnect->bssid) && 2288 !disallowed_ssid(wpa_s, fast_reconnect->ssid, 2289 fast_reconnect->ssid_len) && 2290 !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) { 2291#ifndef CONFIG_NO_SCAN_PROCESSING 2292 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS"); 2293 if (wpa_supplicant_connect(wpa_s, fast_reconnect, 2294 fast_reconnect_ssid) < 0) { 2295 /* Recover through full scan */ 2296 wpa_supplicant_req_scan(wpa_s, 0, 100000); 2297 } 2298#endif /* CONFIG_NO_SCAN_PROCESSING */ 2299 } else if (fast_reconnect) { 2300 /* 2301 * Could not reconnect to the same BSS due to network being 2302 * disabled. Use a new scan to match the alternative behavior 2303 * above, i.e., to continue automatic reconnection attempt in a 2304 * way that enforces disabled network rules. 2305 */ 2306 wpa_supplicant_req_scan(wpa_s, 0, 100000); 2307 } 2308} 2309 2310 2311#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 2312void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx) 2313{ 2314 struct wpa_supplicant *wpa_s = eloop_ctx; 2315 2316 if (!wpa_s->pending_mic_error_report) 2317 return; 2318 2319 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report"); 2320 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise); 2321 wpa_s->pending_mic_error_report = 0; 2322} 2323#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 2324 2325 2326static void 2327wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s, 2328 union wpa_event_data *data) 2329{ 2330 int pairwise; 2331 struct os_reltime t; 2332 2333 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected"); 2334 pairwise = (data && data->michael_mic_failure.unicast); 2335 os_get_reltime(&t); 2336 if ((wpa_s->last_michael_mic_error.sec && 2337 !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) || 2338 wpa_s->pending_mic_error_report) { 2339 if (wpa_s->pending_mic_error_report) { 2340 /* 2341 * Send the pending MIC error report immediately since 2342 * we are going to start countermeasures and AP better 2343 * do the same. 2344 */ 2345 wpa_sm_key_request(wpa_s->wpa, 1, 2346 wpa_s->pending_mic_error_pairwise); 2347 } 2348 2349 /* Send the new MIC error report immediately since we are going 2350 * to start countermeasures and AP better do the same. 2351 */ 2352 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 2353 2354 /* initialize countermeasures */ 2355 wpa_s->countermeasures = 1; 2356 2357 wpa_blacklist_add(wpa_s, wpa_s->bssid); 2358 2359 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started"); 2360 2361 /* 2362 * Need to wait for completion of request frame. We do not get 2363 * any callback for the message completion, so just wait a 2364 * short while and hope for the best. */ 2365 os_sleep(0, 10000); 2366 2367 wpa_drv_set_countermeasures(wpa_s, 1); 2368 wpa_supplicant_deauthenticate(wpa_s, 2369 WLAN_REASON_MICHAEL_MIC_FAILURE); 2370 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, 2371 wpa_s, NULL); 2372 eloop_register_timeout(60, 0, 2373 wpa_supplicant_stop_countermeasures, 2374 wpa_s, NULL); 2375 /* TODO: mark the AP rejected for 60 second. STA is 2376 * allowed to associate with another AP.. */ 2377 } else { 2378#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 2379 if (wpa_s->mic_errors_seen) { 2380 /* 2381 * Reduce the effectiveness of Michael MIC error 2382 * reports as a means for attacking against TKIP if 2383 * more than one MIC failure is noticed with the same 2384 * PTK. We delay the transmission of the reports by a 2385 * random time between 0 and 60 seconds in order to 2386 * force the attacker wait 60 seconds before getting 2387 * the information on whether a frame resulted in a MIC 2388 * failure. 2389 */ 2390 u8 rval[4]; 2391 int sec; 2392 2393 if (os_get_random(rval, sizeof(rval)) < 0) 2394 sec = os_random() % 60; 2395 else 2396 sec = WPA_GET_BE32(rval) % 60; 2397 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error " 2398 "report %d seconds", sec); 2399 wpa_s->pending_mic_error_report = 1; 2400 wpa_s->pending_mic_error_pairwise = pairwise; 2401 eloop_cancel_timeout( 2402 wpa_supplicant_delayed_mic_error_report, 2403 wpa_s, NULL); 2404 eloop_register_timeout( 2405 sec, os_random() % 1000000, 2406 wpa_supplicant_delayed_mic_error_report, 2407 wpa_s, NULL); 2408 } else { 2409 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 2410 } 2411#else /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 2412 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 2413#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 2414 } 2415 wpa_s->last_michael_mic_error = t; 2416 wpa_s->mic_errors_seen++; 2417} 2418 2419 2420#ifdef CONFIG_TERMINATE_ONLASTIF 2421static int any_interfaces(struct wpa_supplicant *head) 2422{ 2423 struct wpa_supplicant *wpa_s; 2424 2425 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next) 2426 if (!wpa_s->interface_removed) 2427 return 1; 2428 return 0; 2429} 2430#endif /* CONFIG_TERMINATE_ONLASTIF */ 2431 2432 2433static void 2434wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s, 2435 union wpa_event_data *data) 2436{ 2437 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0) 2438 return; 2439 2440 switch (data->interface_status.ievent) { 2441 case EVENT_INTERFACE_ADDED: 2442 if (!wpa_s->interface_removed) 2443 break; 2444 wpa_s->interface_removed = 0; 2445 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added"); 2446 if (wpa_supplicant_driver_init(wpa_s) < 0) { 2447 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the " 2448 "driver after interface was added"); 2449 } 2450 break; 2451 case EVENT_INTERFACE_REMOVED: 2452 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed"); 2453 wpa_s->interface_removed = 1; 2454 wpa_supplicant_mark_disassoc(wpa_s); 2455 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 2456 l2_packet_deinit(wpa_s->l2); 2457 wpa_s->l2 = NULL; 2458#ifdef CONFIG_TERMINATE_ONLASTIF 2459 /* check if last interface */ 2460 if (!any_interfaces(wpa_s->global->ifaces)) 2461 eloop_terminate(); 2462#endif /* CONFIG_TERMINATE_ONLASTIF */ 2463 break; 2464 } 2465} 2466 2467 2468#ifdef CONFIG_PEERKEY 2469static void 2470wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s, 2471 union wpa_event_data *data) 2472{ 2473 if (data == NULL) 2474 return; 2475 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer); 2476} 2477#endif /* CONFIG_PEERKEY */ 2478 2479 2480#ifdef CONFIG_TDLS 2481static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s, 2482 union wpa_event_data *data) 2483{ 2484 if (data == NULL) 2485 return; 2486 switch (data->tdls.oper) { 2487 case TDLS_REQUEST_SETUP: 2488 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer); 2489 if (wpa_tdls_is_external_setup(wpa_s->wpa)) 2490 wpa_tdls_start(wpa_s->wpa, data->tdls.peer); 2491 else 2492 wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer); 2493 break; 2494 case TDLS_REQUEST_TEARDOWN: 2495 if (wpa_tdls_is_external_setup(wpa_s->wpa)) 2496 wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer, 2497 data->tdls.reason_code); 2498 else 2499 wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN, 2500 data->tdls.peer); 2501 break; 2502 case TDLS_REQUEST_DISCOVER: 2503 wpa_tdls_send_discovery_request(wpa_s->wpa, 2504 data->tdls.peer); 2505 break; 2506 } 2507} 2508#endif /* CONFIG_TDLS */ 2509 2510 2511#ifdef CONFIG_WNM 2512static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s, 2513 union wpa_event_data *data) 2514{ 2515 if (data == NULL) 2516 return; 2517 switch (data->wnm.oper) { 2518 case WNM_OPER_SLEEP: 2519 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request " 2520 "(action=%d, intval=%d)", 2521 data->wnm.sleep_action, data->wnm.sleep_intval); 2522 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action, 2523 data->wnm.sleep_intval, NULL); 2524 break; 2525 } 2526} 2527#endif /* CONFIG_WNM */ 2528 2529 2530#ifdef CONFIG_IEEE80211R 2531static void 2532wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s, 2533 union wpa_event_data *data) 2534{ 2535 if (data == NULL) 2536 return; 2537 2538 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies, 2539 data->ft_ies.ies_len, 2540 data->ft_ies.ft_action, 2541 data->ft_ies.target_ap, 2542 data->ft_ies.ric_ies, 2543 data->ft_ies.ric_ies_len) < 0) { 2544 /* TODO: prevent MLME/driver from trying to associate? */ 2545 } 2546} 2547#endif /* CONFIG_IEEE80211R */ 2548 2549 2550#ifdef CONFIG_IBSS_RSN 2551static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s, 2552 union wpa_event_data *data) 2553{ 2554 struct wpa_ssid *ssid; 2555 if (wpa_s->wpa_state < WPA_ASSOCIATED) 2556 return; 2557 if (data == NULL) 2558 return; 2559 ssid = wpa_s->current_ssid; 2560 if (ssid == NULL) 2561 return; 2562 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt)) 2563 return; 2564 2565 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer); 2566} 2567 2568 2569static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s, 2570 union wpa_event_data *data) 2571{ 2572 struct wpa_ssid *ssid = wpa_s->current_ssid; 2573 2574 if (ssid == NULL) 2575 return; 2576 2577 /* check if the ssid is correctly configured as IBSS/RSN */ 2578 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt)) 2579 return; 2580 2581 ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame, 2582 data->rx_mgmt.frame_len); 2583} 2584#endif /* CONFIG_IBSS_RSN */ 2585 2586 2587#ifdef CONFIG_IEEE80211R 2588static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data, 2589 size_t len) 2590{ 2591 const u8 *sta_addr, *target_ap_addr; 2592 u16 status; 2593 2594 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len); 2595 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) 2596 return; /* only SME case supported for now */ 2597 if (len < 1 + 2 * ETH_ALEN + 2) 2598 return; 2599 if (data[0] != 2) 2600 return; /* Only FT Action Response is supported for now */ 2601 sta_addr = data + 1; 2602 target_ap_addr = data + 1 + ETH_ALEN; 2603 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN); 2604 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA " 2605 MACSTR " TargetAP " MACSTR " status %u", 2606 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status); 2607 2608 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) { 2609 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR 2610 " in FT Action Response", MAC2STR(sta_addr)); 2611 return; 2612 } 2613 2614 if (status) { 2615 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates " 2616 "failure (status code %d)", status); 2617 /* TODO: report error to FT code(?) */ 2618 return; 2619 } 2620 2621 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2, 2622 len - (1 + 2 * ETH_ALEN + 2), 1, 2623 target_ap_addr, NULL, 0) < 0) 2624 return; 2625 2626#ifdef CONFIG_SME 2627 { 2628 struct wpa_bss *bss; 2629 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr); 2630 if (bss) 2631 wpa_s->sme.freq = bss->freq; 2632 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT; 2633 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr, 2634 WLAN_AUTH_FT); 2635 } 2636#endif /* CONFIG_SME */ 2637} 2638#endif /* CONFIG_IEEE80211R */ 2639 2640 2641static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s, 2642 struct unprot_deauth *e) 2643{ 2644#ifdef CONFIG_IEEE80211W 2645 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame " 2646 "dropped: " MACSTR " -> " MACSTR 2647 " (reason code %u)", 2648 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code); 2649 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code); 2650#endif /* CONFIG_IEEE80211W */ 2651} 2652 2653 2654static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s, 2655 struct unprot_disassoc *e) 2656{ 2657#ifdef CONFIG_IEEE80211W 2658 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame " 2659 "dropped: " MACSTR " -> " MACSTR 2660 " (reason code %u)", 2661 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code); 2662 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code); 2663#endif /* CONFIG_IEEE80211W */ 2664} 2665 2666 2667static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr, 2668 u16 reason_code, int locally_generated, 2669 const u8 *ie, size_t ie_len, int deauth) 2670{ 2671#ifdef CONFIG_AP 2672 if (wpa_s->ap_iface && addr) { 2673 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr); 2674 return; 2675 } 2676 2677 if (wpa_s->ap_iface) { 2678 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode"); 2679 return; 2680 } 2681#endif /* CONFIG_AP */ 2682 2683 if (!locally_generated) 2684 wpa_s->own_disconnect_req = 0; 2685 2686 wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated); 2687 2688 if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED || 2689 ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) || 2690 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) && 2691 eapol_sm_failed(wpa_s->eapol))) && 2692 !wpa_s->eap_expected_failure)) 2693 wpas_auth_failed(wpa_s, "AUTH_FAILED"); 2694 2695#ifdef CONFIG_P2P 2696 if (deauth && reason_code > 0) { 2697 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len, 2698 locally_generated) > 0) { 2699 /* 2700 * The interface was removed, so cannot continue 2701 * processing any additional operations after this. 2702 */ 2703 return; 2704 } 2705 } 2706#endif /* CONFIG_P2P */ 2707 2708 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code, 2709 locally_generated); 2710} 2711 2712 2713static void wpas_event_disassoc(struct wpa_supplicant *wpa_s, 2714 struct disassoc_info *info) 2715{ 2716 u16 reason_code = 0; 2717 int locally_generated = 0; 2718 const u8 *addr = NULL; 2719 const u8 *ie = NULL; 2720 size_t ie_len = 0; 2721 2722 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification"); 2723 2724 if (info) { 2725 addr = info->addr; 2726 ie = info->ie; 2727 ie_len = info->ie_len; 2728 reason_code = info->reason_code; 2729 locally_generated = info->locally_generated; 2730 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code, 2731 locally_generated ? " (locally generated)" : ""); 2732 if (addr) 2733 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR, 2734 MAC2STR(addr)); 2735 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)", 2736 ie, ie_len); 2737 } 2738 2739#ifdef CONFIG_AP 2740 if (wpa_s->ap_iface && info && info->addr) { 2741 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr); 2742 return; 2743 } 2744 2745 if (wpa_s->ap_iface) { 2746 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode"); 2747 return; 2748 } 2749#endif /* CONFIG_AP */ 2750 2751#ifdef CONFIG_P2P 2752 if (info) { 2753 wpas_p2p_disassoc_notif( 2754 wpa_s, info->addr, reason_code, info->ie, info->ie_len, 2755 locally_generated); 2756 } 2757#endif /* CONFIG_P2P */ 2758 2759 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 2760 sme_event_disassoc(wpa_s, info); 2761 2762 wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated, 2763 ie, ie_len, 0); 2764} 2765 2766 2767static void wpas_event_deauth(struct wpa_supplicant *wpa_s, 2768 struct deauth_info *info) 2769{ 2770 u16 reason_code = 0; 2771 int locally_generated = 0; 2772 const u8 *addr = NULL; 2773 const u8 *ie = NULL; 2774 size_t ie_len = 0; 2775 2776 wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification"); 2777 2778 if (info) { 2779 addr = info->addr; 2780 ie = info->ie; 2781 ie_len = info->ie_len; 2782 reason_code = info->reason_code; 2783 locally_generated = info->locally_generated; 2784 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", 2785 reason_code, 2786 locally_generated ? " (locally generated)" : ""); 2787 if (addr) { 2788 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR, 2789 MAC2STR(addr)); 2790 } 2791 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)", 2792 ie, ie_len); 2793 } 2794 2795 wpa_reset_ft_completed(wpa_s->wpa); 2796 2797 wpas_event_disconnect(wpa_s, addr, reason_code, 2798 locally_generated, ie, ie_len, 1); 2799} 2800 2801 2802static const char * reg_init_str(enum reg_change_initiator init) 2803{ 2804 switch (init) { 2805 case REGDOM_SET_BY_CORE: 2806 return "CORE"; 2807 case REGDOM_SET_BY_USER: 2808 return "USER"; 2809 case REGDOM_SET_BY_DRIVER: 2810 return "DRIVER"; 2811 case REGDOM_SET_BY_COUNTRY_IE: 2812 return "COUNTRY_IE"; 2813 case REGDOM_BEACON_HINT: 2814 return "BEACON_HINT"; 2815 } 2816 return "?"; 2817} 2818 2819 2820static const char * reg_type_str(enum reg_type type) 2821{ 2822 switch (type) { 2823 case REGDOM_TYPE_UNKNOWN: 2824 return "UNKNOWN"; 2825 case REGDOM_TYPE_COUNTRY: 2826 return "COUNTRY"; 2827 case REGDOM_TYPE_WORLD: 2828 return "WORLD"; 2829 case REGDOM_TYPE_CUSTOM_WORLD: 2830 return "CUSTOM_WORLD"; 2831 case REGDOM_TYPE_INTERSECTION: 2832 return "INTERSECTION"; 2833 } 2834 return "?"; 2835} 2836 2837 2838static void wpa_supplicant_update_channel_list( 2839 struct wpa_supplicant *wpa_s, struct channel_list_changed *info) 2840{ 2841 struct wpa_supplicant *ifs; 2842 2843 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s", 2844 reg_init_str(info->initiator), reg_type_str(info->type), 2845 info->alpha2[0] ? " alpha2=" : "", 2846 info->alpha2[0] ? info->alpha2 : ""); 2847 2848 if (wpa_s->drv_priv == NULL) 2849 return; /* Ignore event during drv initialization */ 2850 2851 free_hw_features(wpa_s); 2852 wpa_s->hw.modes = wpa_drv_get_hw_feature_data( 2853 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags); 2854 2855 wpas_p2p_update_channel_list(wpa_s); 2856 2857 /* 2858 * Check other interfaces to see if they share the same radio. If 2859 * so, they get updated with this same hw mode info. 2860 */ 2861 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 2862 radio_list) { 2863 if (ifs != wpa_s) { 2864 wpa_printf(MSG_DEBUG, "%s: Updating hw mode", 2865 ifs->ifname); 2866 free_hw_features(ifs); 2867 ifs->hw.modes = wpa_drv_get_hw_feature_data( 2868 ifs, &ifs->hw.num_modes, &ifs->hw.flags); 2869 } 2870 } 2871} 2872 2873 2874static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s, 2875 const u8 *frame, size_t len, int freq, 2876 int rssi) 2877{ 2878 const struct ieee80211_mgmt *mgmt; 2879 const u8 *payload; 2880 size_t plen; 2881 u8 category; 2882 2883 if (len < IEEE80211_HDRLEN + 2) 2884 return; 2885 2886 mgmt = (const struct ieee80211_mgmt *) frame; 2887 payload = frame + IEEE80211_HDRLEN; 2888 category = *payload++; 2889 plen = len - IEEE80211_HDRLEN - 1; 2890 2891 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR 2892 " Category=%u DataLen=%d freq=%d MHz", 2893 MAC2STR(mgmt->sa), category, (int) plen, freq); 2894 2895 if (category == WLAN_ACTION_WMM) { 2896 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen); 2897 return; 2898 } 2899 2900#ifdef CONFIG_IEEE80211R 2901 if (category == WLAN_ACTION_FT) { 2902 ft_rx_action(wpa_s, payload, plen); 2903 return; 2904 } 2905#endif /* CONFIG_IEEE80211R */ 2906 2907#ifdef CONFIG_IEEE80211W 2908#ifdef CONFIG_SME 2909 if (category == WLAN_ACTION_SA_QUERY) { 2910 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen); 2911 return; 2912 } 2913#endif /* CONFIG_SME */ 2914#endif /* CONFIG_IEEE80211W */ 2915 2916#ifdef CONFIG_WNM 2917 if (mgmt->u.action.category == WLAN_ACTION_WNM) { 2918 ieee802_11_rx_wnm_action(wpa_s, mgmt, len); 2919 return; 2920 } 2921#endif /* CONFIG_WNM */ 2922 2923#ifdef CONFIG_GAS 2924 if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC || 2925 mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) && 2926 gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid, 2927 mgmt->u.action.category, 2928 payload, plen, freq) == 0) 2929 return; 2930#endif /* CONFIG_GAS */ 2931 2932#ifdef CONFIG_TDLS 2933 if (category == WLAN_ACTION_PUBLIC && plen >= 4 && 2934 payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) { 2935 wpa_dbg(wpa_s, MSG_DEBUG, 2936 "TDLS: Received Discovery Response from " MACSTR, 2937 MAC2STR(mgmt->sa)); 2938 return; 2939 } 2940#endif /* CONFIG_TDLS */ 2941 2942#ifdef CONFIG_INTERWORKING 2943 if (category == WLAN_ACTION_QOS && plen >= 1 && 2944 payload[0] == QOS_QOS_MAP_CONFIG) { 2945 const u8 *pos = payload + 1; 2946 size_t qlen = plen - 1; 2947 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from " 2948 MACSTR, MAC2STR(mgmt->sa)); 2949 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 && 2950 qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET && 2951 pos[1] <= qlen - 2 && pos[1] >= 16) 2952 wpas_qos_map_set(wpa_s, pos + 2, pos[1]); 2953 return; 2954 } 2955#endif /* CONFIG_INTERWORKING */ 2956 2957 if (category == WLAN_ACTION_RADIO_MEASUREMENT && 2958 payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) { 2959 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1); 2960 return; 2961 } 2962 2963 if (category == WLAN_ACTION_RADIO_MEASUREMENT && 2964 payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) { 2965 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa, 2966 payload + 1, plen - 1, 2967 rssi); 2968 return; 2969 } 2970 2971 wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid, 2972 category, payload, plen, freq); 2973 if (wpa_s->ifmsh) 2974 mesh_mpm_action_rx(wpa_s, mgmt, len); 2975} 2976 2977 2978static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s, 2979 union wpa_event_data *event) 2980{ 2981#ifdef CONFIG_P2P 2982 struct wpa_supplicant *ifs; 2983#endif /* CONFIG_P2P */ 2984 struct wpa_freq_range_list *list; 2985 char *str = NULL; 2986 2987 list = &event->freq_range; 2988 2989 if (list->num) 2990 str = freq_range_list_str(list); 2991 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s", 2992 str ? str : ""); 2993 2994#ifdef CONFIG_P2P 2995 if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) { 2996 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range", 2997 __func__); 2998 } else { 2999 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event"); 3000 wpas_p2p_update_channel_list(wpa_s); 3001 } 3002 3003 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 3004 int freq; 3005 if (!ifs->current_ssid || 3006 !ifs->current_ssid->p2p_group || 3007 (ifs->current_ssid->mode != WPAS_MODE_P2P_GO && 3008 ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)) 3009 continue; 3010 3011 freq = ifs->current_ssid->frequency; 3012 if (!freq_range_list_includes(list, freq)) { 3013 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range", 3014 freq); 3015 continue; 3016 } 3017 3018 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz", 3019 freq); 3020 /* TODO: Consider using CSA or removing the group within 3021 * wpa_supplicant */ 3022 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP); 3023 } 3024#endif /* CONFIG_P2P */ 3025 3026 os_free(str); 3027} 3028 3029 3030static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s, 3031 union wpa_event_data *data) 3032{ 3033 wpa_dbg(wpa_s, MSG_DEBUG, 3034 "Connection authorized by device, previous state %d", 3035 wpa_s->wpa_state); 3036 if (wpa_s->wpa_state == WPA_ASSOCIATED) { 3037 wpa_supplicant_cancel_auth_timeout(wpa_s); 3038 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 3039 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 3040 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 3041 } 3042 wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr); 3043 wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck, 3044 data->assoc_info.ptk_kck_len, 3045 data->assoc_info.ptk_kek, 3046 data->assoc_info.ptk_kek_len); 3047} 3048 3049 3050void wpa_supplicant_event(void *ctx, enum wpa_event_type event, 3051 union wpa_event_data *data) 3052{ 3053 struct wpa_supplicant *wpa_s = ctx; 3054 3055 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED && 3056 event != EVENT_INTERFACE_ENABLED && 3057 event != EVENT_INTERFACE_STATUS && 3058 event != EVENT_SCHED_SCAN_STOPPED) { 3059 wpa_dbg(wpa_s, MSG_DEBUG, 3060 "Ignore event %s (%d) while interface is disabled", 3061 event_to_string(event), event); 3062 return; 3063 } 3064 3065#ifndef CONFIG_NO_STDOUT_DEBUG 3066{ 3067 int level = MSG_DEBUG; 3068 3069 if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) { 3070 const struct ieee80211_hdr *hdr; 3071 u16 fc; 3072 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame; 3073 fc = le_to_host16(hdr->frame_control); 3074 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT && 3075 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON) 3076 level = MSG_EXCESSIVE; 3077 } 3078 3079 wpa_dbg(wpa_s, level, "Event %s (%d) received", 3080 event_to_string(event), event); 3081} 3082#endif /* CONFIG_NO_STDOUT_DEBUG */ 3083 3084 switch (event) { 3085 case EVENT_AUTH: 3086 sme_event_auth(wpa_s, data); 3087 break; 3088 case EVENT_ASSOC: 3089 wpa_supplicant_event_assoc(wpa_s, data); 3090 if (data && data->assoc_info.authorized) 3091 wpa_supplicant_event_assoc_auth(wpa_s, data); 3092 break; 3093 case EVENT_DISASSOC: 3094 wpas_event_disassoc(wpa_s, 3095 data ? &data->disassoc_info : NULL); 3096 break; 3097 case EVENT_DEAUTH: 3098 wpas_event_deauth(wpa_s, 3099 data ? &data->deauth_info : NULL); 3100 break; 3101 case EVENT_MICHAEL_MIC_FAILURE: 3102 wpa_supplicant_event_michael_mic_failure(wpa_s, data); 3103 break; 3104#ifndef CONFIG_NO_SCAN_PROCESSING 3105 case EVENT_SCAN_STARTED: 3106 os_get_reltime(&wpa_s->scan_start_time); 3107 if (wpa_s->own_scan_requested) { 3108 struct os_reltime diff; 3109 3110 os_reltime_sub(&wpa_s->scan_start_time, 3111 &wpa_s->scan_trigger_time, &diff); 3112 wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds", 3113 diff.sec, diff.usec); 3114 wpa_s->own_scan_requested = 0; 3115 wpa_s->own_scan_running = 1; 3116 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && 3117 wpa_s->manual_scan_use_id) { 3118 wpa_msg_ctrl(wpa_s, MSG_INFO, 3119 WPA_EVENT_SCAN_STARTED "id=%u", 3120 wpa_s->manual_scan_id); 3121 } else { 3122 wpa_msg_ctrl(wpa_s, MSG_INFO, 3123 WPA_EVENT_SCAN_STARTED); 3124 } 3125 } else { 3126 wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan"); 3127 wpa_s->radio->external_scan_running = 1; 3128 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED); 3129 } 3130 break; 3131 case EVENT_SCAN_RESULTS: 3132 if (os_reltime_initialized(&wpa_s->scan_start_time)) { 3133 struct os_reltime now, diff; 3134 os_get_reltime(&now); 3135 os_reltime_sub(&now, &wpa_s->scan_start_time, &diff); 3136 wpa_s->scan_start_time.sec = 0; 3137 wpa_s->scan_start_time.usec = 0; 3138 wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds", 3139 diff.sec, diff.usec); 3140 } 3141 if (wpa_supplicant_event_scan_results(wpa_s, data)) 3142 break; /* interface may have been removed */ 3143 wpa_s->own_scan_running = 0; 3144 wpa_s->radio->external_scan_running = 0; 3145 radio_work_check_next(wpa_s); 3146 break; 3147#endif /* CONFIG_NO_SCAN_PROCESSING */ 3148 case EVENT_ASSOCINFO: 3149 wpa_supplicant_event_associnfo(wpa_s, data); 3150 break; 3151 case EVENT_INTERFACE_STATUS: 3152 wpa_supplicant_event_interface_status(wpa_s, data); 3153 break; 3154 case EVENT_PMKID_CANDIDATE: 3155 wpa_supplicant_event_pmkid_candidate(wpa_s, data); 3156 break; 3157#ifdef CONFIG_PEERKEY 3158 case EVENT_STKSTART: 3159 wpa_supplicant_event_stkstart(wpa_s, data); 3160 break; 3161#endif /* CONFIG_PEERKEY */ 3162#ifdef CONFIG_TDLS 3163 case EVENT_TDLS: 3164 wpa_supplicant_event_tdls(wpa_s, data); 3165 break; 3166#endif /* CONFIG_TDLS */ 3167#ifdef CONFIG_WNM 3168 case EVENT_WNM: 3169 wpa_supplicant_event_wnm(wpa_s, data); 3170 break; 3171#endif /* CONFIG_WNM */ 3172#ifdef CONFIG_IEEE80211R 3173 case EVENT_FT_RESPONSE: 3174 wpa_supplicant_event_ft_response(wpa_s, data); 3175 break; 3176#endif /* CONFIG_IEEE80211R */ 3177#ifdef CONFIG_IBSS_RSN 3178 case EVENT_IBSS_RSN_START: 3179 wpa_supplicant_event_ibss_rsn_start(wpa_s, data); 3180 break; 3181#endif /* CONFIG_IBSS_RSN */ 3182 case EVENT_ASSOC_REJECT: 3183 if (data->assoc_reject.bssid) 3184 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT 3185 "bssid=" MACSTR " status_code=%u", 3186 MAC2STR(data->assoc_reject.bssid), 3187 data->assoc_reject.status_code); 3188 else 3189 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT 3190 "status_code=%u", 3191 data->assoc_reject.status_code); 3192 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 3193 sme_event_assoc_reject(wpa_s, data); 3194 else { 3195 const u8 *bssid = data->assoc_reject.bssid; 3196 if (bssid == NULL || is_zero_ether_addr(bssid)) 3197 bssid = wpa_s->pending_bssid; 3198 wpas_connection_failed(wpa_s, bssid); 3199 wpa_supplicant_mark_disassoc(wpa_s); 3200 } 3201 break; 3202 case EVENT_AUTH_TIMED_OUT: 3203 /* It is possible to get this event from earlier connection */ 3204 if (wpa_s->current_ssid && 3205 wpa_s->current_ssid->mode == WPAS_MODE_MESH) { 3206 wpa_dbg(wpa_s, MSG_DEBUG, 3207 "Ignore AUTH_TIMED_OUT in mesh configuration"); 3208 break; 3209 } 3210 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 3211 sme_event_auth_timed_out(wpa_s, data); 3212 break; 3213 case EVENT_ASSOC_TIMED_OUT: 3214 /* It is possible to get this event from earlier connection */ 3215 if (wpa_s->current_ssid && 3216 wpa_s->current_ssid->mode == WPAS_MODE_MESH) { 3217 wpa_dbg(wpa_s, MSG_DEBUG, 3218 "Ignore ASSOC_TIMED_OUT in mesh configuration"); 3219 break; 3220 } 3221 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 3222 sme_event_assoc_timed_out(wpa_s, data); 3223 break; 3224 case EVENT_TX_STATUS: 3225 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR 3226 " type=%d stype=%d", 3227 MAC2STR(data->tx_status.dst), 3228 data->tx_status.type, data->tx_status.stype); 3229#ifdef CONFIG_AP 3230 if (wpa_s->ap_iface == NULL) { 3231#ifdef CONFIG_OFFCHANNEL 3232 if (data->tx_status.type == WLAN_FC_TYPE_MGMT && 3233 data->tx_status.stype == WLAN_FC_STYPE_ACTION) 3234 offchannel_send_action_tx_status( 3235 wpa_s, data->tx_status.dst, 3236 data->tx_status.data, 3237 data->tx_status.data_len, 3238 data->tx_status.ack ? 3239 OFFCHANNEL_SEND_ACTION_SUCCESS : 3240 OFFCHANNEL_SEND_ACTION_NO_ACK); 3241#endif /* CONFIG_OFFCHANNEL */ 3242 break; 3243 } 3244#endif /* CONFIG_AP */ 3245#ifdef CONFIG_OFFCHANNEL 3246 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst=" 3247 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst)); 3248 /* 3249 * Catch TX status events for Action frames we sent via group 3250 * interface in GO mode. 3251 */ 3252 if (data->tx_status.type == WLAN_FC_TYPE_MGMT && 3253 data->tx_status.stype == WLAN_FC_STYPE_ACTION && 3254 os_memcmp(wpa_s->parent->pending_action_dst, 3255 data->tx_status.dst, ETH_ALEN) == 0) { 3256 offchannel_send_action_tx_status( 3257 wpa_s->parent, data->tx_status.dst, 3258 data->tx_status.data, 3259 data->tx_status.data_len, 3260 data->tx_status.ack ? 3261 OFFCHANNEL_SEND_ACTION_SUCCESS : 3262 OFFCHANNEL_SEND_ACTION_NO_ACK); 3263 break; 3264 } 3265#endif /* CONFIG_OFFCHANNEL */ 3266#ifdef CONFIG_AP 3267 switch (data->tx_status.type) { 3268 case WLAN_FC_TYPE_MGMT: 3269 ap_mgmt_tx_cb(wpa_s, data->tx_status.data, 3270 data->tx_status.data_len, 3271 data->tx_status.stype, 3272 data->tx_status.ack); 3273 break; 3274 case WLAN_FC_TYPE_DATA: 3275 ap_tx_status(wpa_s, data->tx_status.dst, 3276 data->tx_status.data, 3277 data->tx_status.data_len, 3278 data->tx_status.ack); 3279 break; 3280 } 3281#endif /* CONFIG_AP */ 3282 break; 3283#ifdef CONFIG_AP 3284 case EVENT_EAPOL_TX_STATUS: 3285 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst, 3286 data->eapol_tx_status.data, 3287 data->eapol_tx_status.data_len, 3288 data->eapol_tx_status.ack); 3289 break; 3290 case EVENT_DRIVER_CLIENT_POLL_OK: 3291 ap_client_poll_ok(wpa_s, data->client_poll.addr); 3292 break; 3293 case EVENT_RX_FROM_UNKNOWN: 3294 if (wpa_s->ap_iface == NULL) 3295 break; 3296 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr, 3297 data->rx_from_unknown.wds); 3298 break; 3299 case EVENT_CH_SWITCH: 3300 if (!data) 3301 break; 3302 if (!wpa_s->ap_iface) { 3303 wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch " 3304 "event in non-AP mode"); 3305 break; 3306 } 3307 3308 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq, 3309 data->ch_switch.ht_enabled, 3310 data->ch_switch.ch_offset, 3311 data->ch_switch.ch_width, 3312 data->ch_switch.cf1, 3313 data->ch_switch.cf2); 3314 break; 3315#ifdef NEED_AP_MLME 3316 case EVENT_DFS_RADAR_DETECTED: 3317 if (data) 3318 wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event); 3319 break; 3320 case EVENT_DFS_CAC_STARTED: 3321 if (data) 3322 wpas_event_dfs_cac_started(wpa_s, &data->dfs_event); 3323 break; 3324 case EVENT_DFS_CAC_FINISHED: 3325 if (data) 3326 wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event); 3327 break; 3328 case EVENT_DFS_CAC_ABORTED: 3329 if (data) 3330 wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event); 3331 break; 3332 case EVENT_DFS_NOP_FINISHED: 3333 if (data) 3334 wpas_event_dfs_cac_nop_finished(wpa_s, 3335 &data->dfs_event); 3336 break; 3337#endif /* NEED_AP_MLME */ 3338#endif /* CONFIG_AP */ 3339 case EVENT_RX_MGMT: { 3340 u16 fc, stype; 3341 const struct ieee80211_mgmt *mgmt; 3342 3343#ifdef CONFIG_TESTING_OPTIONS 3344 if (wpa_s->ext_mgmt_frame_handling) { 3345 struct rx_mgmt *rx = &data->rx_mgmt; 3346 size_t hex_len = 2 * rx->frame_len + 1; 3347 char *hex = os_malloc(hex_len); 3348 if (hex) { 3349 wpa_snprintf_hex(hex, hex_len, 3350 rx->frame, rx->frame_len); 3351 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s", 3352 rx->freq, rx->datarate, rx->ssi_signal, 3353 hex); 3354 os_free(hex); 3355 } 3356 break; 3357 } 3358#endif /* CONFIG_TESTING_OPTIONS */ 3359 3360 mgmt = (const struct ieee80211_mgmt *) 3361 data->rx_mgmt.frame; 3362 fc = le_to_host16(mgmt->frame_control); 3363 stype = WLAN_FC_GET_STYPE(fc); 3364 3365#ifdef CONFIG_AP 3366 if (wpa_s->ap_iface == NULL) { 3367#endif /* CONFIG_AP */ 3368#ifdef CONFIG_P2P 3369 if (stype == WLAN_FC_STYPE_PROBE_REQ && 3370 data->rx_mgmt.frame_len > 24) { 3371 const u8 *src = mgmt->sa; 3372 const u8 *ie = mgmt->u.probe_req.variable; 3373 size_t ie_len = data->rx_mgmt.frame_len - 3374 (mgmt->u.probe_req.variable - 3375 data->rx_mgmt.frame); 3376 wpas_p2p_probe_req_rx( 3377 wpa_s, src, mgmt->da, 3378 mgmt->bssid, ie, ie_len, 3379 data->rx_mgmt.ssi_signal); 3380 break; 3381 } 3382#endif /* CONFIG_P2P */ 3383#ifdef CONFIG_IBSS_RSN 3384 if (wpa_s->current_ssid && 3385 wpa_s->current_ssid->mode == WPAS_MODE_IBSS && 3386 stype == WLAN_FC_STYPE_AUTH && 3387 data->rx_mgmt.frame_len >= 30) { 3388 wpa_supplicant_event_ibss_auth(wpa_s, data); 3389 break; 3390 } 3391#endif /* CONFIG_IBSS_RSN */ 3392 3393 if (stype == WLAN_FC_STYPE_ACTION) { 3394 wpas_event_rx_mgmt_action( 3395 wpa_s, data->rx_mgmt.frame, 3396 data->rx_mgmt.frame_len, 3397 data->rx_mgmt.freq, 3398 data->rx_mgmt.ssi_signal); 3399 break; 3400 } 3401 3402 if (wpa_s->ifmsh) { 3403 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt); 3404 break; 3405 } 3406 3407 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received " 3408 "management frame in non-AP mode"); 3409 break; 3410#ifdef CONFIG_AP 3411 } 3412 3413 if (stype == WLAN_FC_STYPE_PROBE_REQ && 3414 data->rx_mgmt.frame_len > 24) { 3415 const u8 *ie = mgmt->u.probe_req.variable; 3416 size_t ie_len = data->rx_mgmt.frame_len - 3417 (mgmt->u.probe_req.variable - 3418 data->rx_mgmt.frame); 3419 3420 wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da, 3421 mgmt->bssid, ie, ie_len, 3422 data->rx_mgmt.ssi_signal); 3423 } 3424 3425 ap_mgmt_rx(wpa_s, &data->rx_mgmt); 3426#endif /* CONFIG_AP */ 3427 break; 3428 } 3429 case EVENT_RX_PROBE_REQ: 3430 if (data->rx_probe_req.sa == NULL || 3431 data->rx_probe_req.ie == NULL) 3432 break; 3433#ifdef CONFIG_AP 3434 if (wpa_s->ap_iface) { 3435 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0], 3436 data->rx_probe_req.sa, 3437 data->rx_probe_req.da, 3438 data->rx_probe_req.bssid, 3439 data->rx_probe_req.ie, 3440 data->rx_probe_req.ie_len, 3441 data->rx_probe_req.ssi_signal); 3442 break; 3443 } 3444#endif /* CONFIG_AP */ 3445 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa, 3446 data->rx_probe_req.da, 3447 data->rx_probe_req.bssid, 3448 data->rx_probe_req.ie, 3449 data->rx_probe_req.ie_len, 3450 data->rx_probe_req.ssi_signal); 3451 break; 3452 case EVENT_REMAIN_ON_CHANNEL: 3453#ifdef CONFIG_OFFCHANNEL 3454 offchannel_remain_on_channel_cb( 3455 wpa_s, data->remain_on_channel.freq, 3456 data->remain_on_channel.duration); 3457#endif /* CONFIG_OFFCHANNEL */ 3458 wpas_p2p_remain_on_channel_cb( 3459 wpa_s, data->remain_on_channel.freq, 3460 data->remain_on_channel.duration); 3461 break; 3462 case EVENT_CANCEL_REMAIN_ON_CHANNEL: 3463#ifdef CONFIG_OFFCHANNEL 3464 offchannel_cancel_remain_on_channel_cb( 3465 wpa_s, data->remain_on_channel.freq); 3466#endif /* CONFIG_OFFCHANNEL */ 3467 wpas_p2p_cancel_remain_on_channel_cb( 3468 wpa_s, data->remain_on_channel.freq); 3469 break; 3470 case EVENT_EAPOL_RX: 3471 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src, 3472 data->eapol_rx.data, 3473 data->eapol_rx.data_len); 3474 break; 3475 case EVENT_SIGNAL_CHANGE: 3476 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE 3477 "above=%d signal=%d noise=%d txrate=%d", 3478 data->signal_change.above_threshold, 3479 data->signal_change.current_signal, 3480 data->signal_change.current_noise, 3481 data->signal_change.current_txrate); 3482 wpa_bss_update_level(wpa_s->current_bss, 3483 data->signal_change.current_signal); 3484 bgscan_notify_signal_change( 3485 wpa_s, data->signal_change.above_threshold, 3486 data->signal_change.current_signal, 3487 data->signal_change.current_noise, 3488 data->signal_change.current_txrate); 3489 break; 3490 case EVENT_INTERFACE_ENABLED: 3491 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled"); 3492 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { 3493 wpa_supplicant_update_mac_addr(wpa_s); 3494 if (wpa_s->p2p_mgmt) { 3495 wpa_supplicant_set_state(wpa_s, 3496 WPA_DISCONNECTED); 3497 break; 3498 } 3499 3500#ifdef CONFIG_AP 3501 if (!wpa_s->ap_iface) { 3502 wpa_supplicant_set_state(wpa_s, 3503 WPA_DISCONNECTED); 3504 wpa_s->scan_req = NORMAL_SCAN_REQ; 3505 wpa_supplicant_req_scan(wpa_s, 0, 0); 3506 } else 3507 wpa_supplicant_set_state(wpa_s, 3508 WPA_COMPLETED); 3509#else /* CONFIG_AP */ 3510 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 3511 wpa_supplicant_req_scan(wpa_s, 0, 0); 3512#endif /* CONFIG_AP */ 3513 } 3514 break; 3515 case EVENT_INTERFACE_DISABLED: 3516 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled"); 3517#ifdef CONFIG_P2P 3518 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO || 3519 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group && 3520 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) { 3521 /* 3522 * Mark interface disabled if this happens to end up not 3523 * being removed as a separate P2P group interface. 3524 */ 3525 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 3526 /* 3527 * The interface was externally disabled. Remove 3528 * it assuming an external entity will start a 3529 * new session if needed. 3530 */ 3531 if (wpa_s->current_ssid && 3532 wpa_s->current_ssid->p2p_group) 3533 wpas_p2p_interface_unavailable(wpa_s); 3534 else 3535 wpas_p2p_disconnect(wpa_s); 3536 /* 3537 * wpa_s instance may have been freed, so must not use 3538 * it here anymore. 3539 */ 3540 break; 3541 } 3542 if (wpa_s->p2p_scan_work && wpa_s->global->p2p && 3543 p2p_in_progress(wpa_s->global->p2p) > 1) { 3544 /* This radio work will be cancelled, so clear P2P 3545 * state as well. 3546 */ 3547 p2p_stop_find(wpa_s->global->p2p); 3548 } 3549#endif /* CONFIG_P2P */ 3550 3551 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 3552 /* 3553 * Indicate disconnection to keep ctrl_iface events 3554 * consistent. 3555 */ 3556 wpa_supplicant_event_disassoc( 3557 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1); 3558 } 3559 wpa_supplicant_mark_disassoc(wpa_s); 3560 radio_remove_works(wpa_s, NULL, 0); 3561 3562 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 3563 break; 3564 case EVENT_CHANNEL_LIST_CHANGED: 3565 wpa_supplicant_update_channel_list( 3566 wpa_s, &data->channel_list_changed); 3567 break; 3568 case EVENT_INTERFACE_UNAVAILABLE: 3569 wpas_p2p_interface_unavailable(wpa_s); 3570 break; 3571 case EVENT_BEST_CHANNEL: 3572 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received " 3573 "(%d %d %d)", 3574 data->best_chan.freq_24, data->best_chan.freq_5, 3575 data->best_chan.freq_overall); 3576 wpa_s->best_24_freq = data->best_chan.freq_24; 3577 wpa_s->best_5_freq = data->best_chan.freq_5; 3578 wpa_s->best_overall_freq = data->best_chan.freq_overall; 3579 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24, 3580 data->best_chan.freq_5, 3581 data->best_chan.freq_overall); 3582 break; 3583 case EVENT_UNPROT_DEAUTH: 3584 wpa_supplicant_event_unprot_deauth(wpa_s, 3585 &data->unprot_deauth); 3586 break; 3587 case EVENT_UNPROT_DISASSOC: 3588 wpa_supplicant_event_unprot_disassoc(wpa_s, 3589 &data->unprot_disassoc); 3590 break; 3591 case EVENT_STATION_LOW_ACK: 3592#ifdef CONFIG_AP 3593 if (wpa_s->ap_iface && data) 3594 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0], 3595 data->low_ack.addr); 3596#endif /* CONFIG_AP */ 3597#ifdef CONFIG_TDLS 3598 if (data) 3599 wpa_tdls_disable_unreachable_link(wpa_s->wpa, 3600 data->low_ack.addr); 3601#endif /* CONFIG_TDLS */ 3602 break; 3603 case EVENT_IBSS_PEER_LOST: 3604#ifdef CONFIG_IBSS_RSN 3605 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer); 3606#endif /* CONFIG_IBSS_RSN */ 3607 break; 3608 case EVENT_DRIVER_GTK_REKEY: 3609 if (os_memcmp(data->driver_gtk_rekey.bssid, 3610 wpa_s->bssid, ETH_ALEN)) 3611 break; 3612 if (!wpa_s->wpa) 3613 break; 3614 wpa_sm_update_replay_ctr(wpa_s->wpa, 3615 data->driver_gtk_rekey.replay_ctr); 3616 break; 3617 case EVENT_SCHED_SCAN_STOPPED: 3618 wpa_s->pno = 0; 3619 wpa_s->sched_scanning = 0; 3620 wpa_supplicant_notify_scanning(wpa_s, 0); 3621 3622 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 3623 break; 3624 3625 /* 3626 * Start a new sched scan to continue searching for more SSIDs 3627 * either if timed out or PNO schedule scan is pending. 3628 */ 3629 if (wpa_s->sched_scan_timed_out) { 3630 wpa_supplicant_req_sched_scan(wpa_s); 3631 } else if (wpa_s->pno_sched_pending) { 3632 wpa_s->pno_sched_pending = 0; 3633 wpas_start_pno(wpa_s); 3634 } 3635 3636 break; 3637 case EVENT_WPS_BUTTON_PUSHED: 3638#ifdef CONFIG_WPS 3639 wpas_wps_start_pbc(wpa_s, NULL, 0); 3640#endif /* CONFIG_WPS */ 3641 break; 3642 case EVENT_AVOID_FREQUENCIES: 3643 wpa_supplicant_notify_avoid_freq(wpa_s, data); 3644 break; 3645 case EVENT_CONNECT_FAILED_REASON: 3646#ifdef CONFIG_AP 3647 if (!wpa_s->ap_iface || !data) 3648 break; 3649 hostapd_event_connect_failed_reason( 3650 wpa_s->ap_iface->bss[0], 3651 data->connect_failed_reason.addr, 3652 data->connect_failed_reason.code); 3653#endif /* CONFIG_AP */ 3654 break; 3655 case EVENT_NEW_PEER_CANDIDATE: 3656#ifdef CONFIG_MESH 3657 if (!wpa_s->ifmsh || !data) 3658 break; 3659 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer, 3660 data->mesh_peer.ies, 3661 data->mesh_peer.ie_len); 3662#endif /* CONFIG_MESH */ 3663 break; 3664 default: 3665 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event); 3666 break; 3667 } 3668} 3669