events.c revision efdec2efdda2f534d84b32f2737ca3d8a00fdf02
1/* 2 * WPA Supplicant - Driver event processing 3 * Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15#include "includes.h" 16 17#include "common.h" 18#include "eapol_supp/eapol_supp_sm.h" 19#include "rsn_supp/wpa.h" 20#include "eloop.h" 21#include "config.h" 22#include "l2_packet/l2_packet.h" 23#include "wpa_supplicant_i.h" 24#include "driver_i.h" 25#include "pcsc_funcs.h" 26#include "rsn_supp/preauth.h" 27#include "rsn_supp/pmksa_cache.h" 28#include "common/wpa_ctrl.h" 29#include "eap_peer/eap.h" 30#include "ap/hostapd.h" 31#include "p2p/p2p.h" 32#include "notify.h" 33#include "common/ieee802_11_defs.h" 34#include "common/ieee802_11_common.h" 35#include "crypto/random.h" 36#include "blacklist.h" 37#include "wpas_glue.h" 38#include "wps_supplicant.h" 39#include "ibss_rsn.h" 40#include "sme.h" 41#include "p2p_supplicant.h" 42#include "bgscan.h" 43#include "ap.h" 44#include "bss.h" 45#include "mlme.h" 46#include "scan.h" 47 48 49static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s) 50{ 51 struct wpa_ssid *ssid, *old_ssid; 52 53 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) 54 return 0; 55 56 wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association " 57 "information"); 58 ssid = wpa_supplicant_get_ssid(wpa_s); 59 if (ssid == NULL) { 60 wpa_msg(wpa_s, MSG_INFO, 61 "No network configuration found for the current AP"); 62 return -1; 63 } 64 65 if (ssid->disabled) { 66 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled"); 67 return -1; 68 } 69 70 wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the " 71 "current AP"); 72 if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X | 73 WPA_KEY_MGMT_WPA_NONE | 74 WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X | 75 WPA_KEY_MGMT_PSK_SHA256 | 76 WPA_KEY_MGMT_IEEE8021X_SHA256)) { 77 u8 wpa_ie[80]; 78 size_t wpa_ie_len = sizeof(wpa_ie); 79 wpa_supplicant_set_suites(wpa_s, NULL, ssid, 80 wpa_ie, &wpa_ie_len); 81 } else { 82 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 83 } 84 85 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) 86 eapol_sm_invalidate_cached_session(wpa_s->eapol); 87 old_ssid = wpa_s->current_ssid; 88 wpa_s->current_ssid = ssid; 89 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 90 wpa_supplicant_initiate_eapol(wpa_s); 91 if (old_ssid != wpa_s->current_ssid) 92 wpas_notify_network_changed(wpa_s); 93 94 return 0; 95} 96 97 98static void wpa_supplicant_stop_countermeasures(void *eloop_ctx, 99 void *sock_ctx) 100{ 101 struct wpa_supplicant *wpa_s = eloop_ctx; 102 103 if (wpa_s->countermeasures) { 104 wpa_s->countermeasures = 0; 105 wpa_drv_set_countermeasures(wpa_s, 0); 106 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped"); 107 wpa_supplicant_req_scan(wpa_s, 0, 0); 108 } 109} 110 111 112void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s) 113{ 114 int bssid_changed; 115 116#ifdef CONFIG_IBSS_RSN 117 ibss_rsn_deinit(wpa_s->ibss_rsn); 118 wpa_s->ibss_rsn = NULL; 119#endif /* CONFIG_IBSS_RSN */ 120 121#ifdef CONFIG_AP 122 wpa_supplicant_ap_deinit(wpa_s); 123#endif /* CONFIG_AP */ 124 125 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 126 return; 127 128 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 129 wpa_s->conf->ap_scan = DEFAULT_AP_SCAN; 130 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 131 os_memset(wpa_s->bssid, 0, ETH_ALEN); 132 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 133 wpa_s->current_bss = NULL; 134 wpa_s->assoc_freq = 0; 135#ifdef CONFIG_IEEE80211R 136#ifdef CONFIG_SME 137 if (wpa_s->sme.ft_ies) 138 sme_update_ft_ies(wpa_s, NULL, NULL, 0); 139#endif /* CONFIG_SME */ 140#endif /* CONFIG_IEEE80211R */ 141 142 if (bssid_changed) 143 wpas_notify_bssid_changed(wpa_s); 144 145 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 146 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 147 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) 148 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 149 wpa_s->ap_ies_from_associnfo = 0; 150} 151 152 153static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s) 154{ 155 struct wpa_ie_data ie; 156 int pmksa_set = -1; 157 size_t i; 158 159 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 || 160 ie.pmkid == NULL) 161 return; 162 163 for (i = 0; i < ie.num_pmkid; i++) { 164 pmksa_set = pmksa_cache_set_current(wpa_s->wpa, 165 ie.pmkid + i * PMKID_LEN, 166 NULL, NULL, 0); 167 if (pmksa_set == 0) { 168 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); 169 break; 170 } 171 } 172 173 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from " 174 "PMKSA cache", pmksa_set == 0 ? "" : "not "); 175} 176 177 178static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s, 179 union wpa_event_data *data) 180{ 181 if (data == NULL) { 182 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate " 183 "event"); 184 return; 185 } 186 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR 187 " index=%d preauth=%d", 188 MAC2STR(data->pmkid_candidate.bssid), 189 data->pmkid_candidate.index, 190 data->pmkid_candidate.preauth); 191 192 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid, 193 data->pmkid_candidate.index, 194 data->pmkid_candidate.preauth); 195} 196 197 198static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s) 199{ 200 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 201 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) 202 return 0; 203 204#ifdef IEEE8021X_EAPOL 205 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA && 206 wpa_s->current_ssid && 207 !(wpa_s->current_ssid->eapol_flags & 208 (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 209 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) { 210 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either 211 * plaintext or static WEP keys). */ 212 return 0; 213 } 214#endif /* IEEE8021X_EAPOL */ 215 216 return 1; 217} 218 219 220/** 221 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC 222 * @wpa_s: pointer to wpa_supplicant data 223 * @ssid: Configuration data for the network 224 * Returns: 0 on success, -1 on failure 225 * 226 * This function is called when starting authentication with a network that is 227 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA). 228 */ 229int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s, 230 struct wpa_ssid *ssid) 231{ 232#ifdef IEEE8021X_EAPOL 233 int aka = 0, sim = 0, type; 234 235 if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL) 236 return 0; 237 238 if (ssid->eap.eap_methods == NULL) { 239 sim = 1; 240 aka = 1; 241 } else { 242 struct eap_method_type *eap = ssid->eap.eap_methods; 243 while (eap->vendor != EAP_VENDOR_IETF || 244 eap->method != EAP_TYPE_NONE) { 245 if (eap->vendor == EAP_VENDOR_IETF) { 246 if (eap->method == EAP_TYPE_SIM) 247 sim = 1; 248 else if (eap->method == EAP_TYPE_AKA) 249 aka = 1; 250 } 251 eap++; 252 } 253 } 254 255 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL) 256 sim = 0; 257 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL) 258 aka = 0; 259 260 if (!sim && !aka) { 261 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to " 262 "use SIM, but neither EAP-SIM nor EAP-AKA are " 263 "enabled"); 264 return 0; 265 } 266 267 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM " 268 "(sim=%d aka=%d) - initialize PCSC", sim, aka); 269 if (sim && aka) 270 type = SCARD_TRY_BOTH; 271 else if (aka) 272 type = SCARD_USIM_ONLY; 273 else 274 type = SCARD_GSM_SIM_ONLY; 275 276 wpa_s->scard = scard_init(type); 277 if (wpa_s->scard == NULL) { 278 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM " 279 "(pcsc-lite)"); 280 return -1; 281 } 282 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard); 283 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard); 284#endif /* IEEE8021X_EAPOL */ 285 286 return 0; 287} 288 289 290#ifndef CONFIG_NO_SCAN_PROCESSING 291static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss, 292 struct wpa_ssid *ssid) 293{ 294 int i, privacy = 0; 295 296 if (ssid->mixed_cell) 297 return 1; 298 299#ifdef CONFIG_WPS 300 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 301 return 1; 302#endif /* CONFIG_WPS */ 303 304 for (i = 0; i < NUM_WEP_KEYS; i++) { 305 if (ssid->wep_key_len[i]) { 306 privacy = 1; 307 break; 308 } 309 } 310#ifdef IEEE8021X_EAPOL 311 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 312 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 313 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) 314 privacy = 1; 315#endif /* IEEE8021X_EAPOL */ 316 317 if (wpa_key_mgmt_wpa(ssid->key_mgmt)) 318 privacy = 1; 319 320 if (bss->caps & IEEE80211_CAP_PRIVACY) 321 return privacy; 322 return !privacy; 323} 324 325 326static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s, 327 struct wpa_ssid *ssid, 328 struct wpa_scan_res *bss) 329{ 330 struct wpa_ie_data ie; 331 int proto_match = 0; 332 const u8 *rsn_ie, *wpa_ie; 333 int ret; 334 int wep_ok; 335 336 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss); 337 if (ret >= 0) 338 return ret; 339 340 /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */ 341 wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) && 342 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) && 343 ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) || 344 (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)); 345 346 rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN); 347 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) { 348 proto_match++; 349 350 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) { 351 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - parse " 352 "failed"); 353 break; 354 } 355 356 if (wep_ok && 357 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104))) 358 { 359 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN " 360 "in RSN IE"); 361 return 1; 362 } 363 364 if (!(ie.proto & ssid->proto)) { 365 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - proto " 366 "mismatch"); 367 break; 368 } 369 370 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) { 371 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - PTK " 372 "cipher mismatch"); 373 break; 374 } 375 376 if (!(ie.group_cipher & ssid->group_cipher)) { 377 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - GTK " 378 "cipher mismatch"); 379 break; 380 } 381 382 if (!(ie.key_mgmt & ssid->key_mgmt)) { 383 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - key mgmt " 384 "mismatch"); 385 break; 386 } 387 388#ifdef CONFIG_IEEE80211W 389 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) && 390 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) { 391 wpa_dbg(wpa_s, MSG_DEBUG, " skip RSN IE - no mgmt " 392 "frame protection"); 393 break; 394 } 395#endif /* CONFIG_IEEE80211W */ 396 397 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on RSN IE"); 398 return 1; 399 } 400 401 wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 402 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) { 403 proto_match++; 404 405 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) { 406 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - parse " 407 "failed"); 408 break; 409 } 410 411 if (wep_ok && 412 (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104))) 413 { 414 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on TSN " 415 "in WPA IE"); 416 return 1; 417 } 418 419 if (!(ie.proto & ssid->proto)) { 420 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - proto " 421 "mismatch"); 422 break; 423 } 424 425 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) { 426 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - PTK " 427 "cipher mismatch"); 428 break; 429 } 430 431 if (!(ie.group_cipher & ssid->group_cipher)) { 432 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - GTK " 433 "cipher mismatch"); 434 break; 435 } 436 437 if (!(ie.key_mgmt & ssid->key_mgmt)) { 438 wpa_dbg(wpa_s, MSG_DEBUG, " skip WPA IE - key mgmt " 439 "mismatch"); 440 break; 441 } 442 443 wpa_dbg(wpa_s, MSG_DEBUG, " selected based on WPA IE"); 444 return 1; 445 } 446 447 if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) && 448 wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) { 449 wpa_dbg(wpa_s, MSG_DEBUG, " skip - no WPA/RSN proto match"); 450 return 0; 451 } 452 453 if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) { 454 wpa_dbg(wpa_s, MSG_DEBUG, " allow in non-WPA/WPA2"); 455 return 1; 456 } 457 458 wpa_dbg(wpa_s, MSG_DEBUG, " reject due to mismatch with " 459 "WPA/WPA2"); 460 461 return 0; 462} 463 464 465static int freq_allowed(int *freqs, int freq) 466{ 467 int i; 468 469 if (freqs == NULL) 470 return 1; 471 472 for (i = 0; freqs[i]; i++) 473 if (freqs[i] == freq) 474 return 1; 475 return 0; 476} 477 478 479static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s, 480 int i, struct wpa_scan_res *bss, 481 struct wpa_ssid *group) 482{ 483 const u8 *ssid_; 484 u8 wpa_ie_len, rsn_ie_len, ssid_len; 485 int wpa; 486 struct wpa_blacklist *e; 487 const u8 *ie; 488 struct wpa_ssid *ssid; 489 490 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID); 491 ssid_ = ie ? ie + 2 : (u8 *) ""; 492 ssid_len = ie ? ie[1] : 0; 493 494 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 495 wpa_ie_len = ie ? ie[1] : 0; 496 497 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN); 498 rsn_ie_len = ie ? ie[1] : 0; 499 500 wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' " 501 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s", 502 i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len), 503 wpa_ie_len, rsn_ie_len, bss->caps, bss->level, 504 wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : ""); 505 506 e = wpa_blacklist_get(wpa_s, bss->bssid); 507 if (e) { 508 int limit = 1; 509 if (wpa_supplicant_enabled_networks(wpa_s->conf) == 1) { 510 /* 511 * When only a single network is enabled, we can 512 * trigger blacklisting on the first failure. This 513 * should not be done with multiple enabled networks to 514 * avoid getting forced to move into a worse ESS on 515 * single error if there are no other BSSes of the 516 * current ESS. 517 */ 518 limit = 0; 519 } 520 if (e->count > limit) { 521 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted " 522 "(count=%d limit=%d)", e->count, limit); 523 return NULL; 524 } 525 } 526 527 if (ssid_len == 0) { 528 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID not known"); 529 return NULL; 530 } 531 532 wpa = wpa_ie_len > 0 || rsn_ie_len > 0; 533 534 for (ssid = group; ssid; ssid = ssid->pnext) { 535 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0); 536 537 if (ssid->disabled) { 538 wpa_dbg(wpa_s, MSG_DEBUG, " skip - disabled"); 539 continue; 540 } 541 542#ifdef CONFIG_WPS 543 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) { 544 wpa_dbg(wpa_s, MSG_DEBUG, " skip - blacklisted " 545 "(WPS)"); 546 continue; 547 } 548 549 if (wpa && ssid->ssid_len == 0 && 550 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss)) 551 check_ssid = 0; 552 553 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 554 /* Only allow wildcard SSID match if an AP 555 * advertises active WPS operation that matches 556 * with our mode. */ 557 check_ssid = 1; 558 if (ssid->ssid_len == 0 && 559 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss)) 560 check_ssid = 0; 561 } 562#endif /* CONFIG_WPS */ 563 564 if (check_ssid && 565 (ssid_len != ssid->ssid_len || 566 os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) { 567 wpa_dbg(wpa_s, MSG_DEBUG, " skip - SSID mismatch"); 568 continue; 569 } 570 571 if (ssid->bssid_set && 572 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) { 573 wpa_dbg(wpa_s, MSG_DEBUG, " skip - BSSID mismatch"); 574 continue; 575 } 576 577 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss)) 578 continue; 579 580 if (!wpa && 581 !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) && 582 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) && 583 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) { 584 wpa_dbg(wpa_s, MSG_DEBUG, " skip - non-WPA network " 585 "not allowed"); 586 continue; 587 } 588 589 if (!wpa_supplicant_match_privacy(bss, ssid)) { 590 wpa_dbg(wpa_s, MSG_DEBUG, " skip - privacy " 591 "mismatch"); 592 continue; 593 } 594 595 if (bss->caps & IEEE80211_CAP_IBSS) { 596 wpa_dbg(wpa_s, MSG_DEBUG, " skip - IBSS (adhoc) " 597 "network"); 598 continue; 599 } 600 601 if (!freq_allowed(ssid->freq_list, bss->freq)) { 602 wpa_dbg(wpa_s, MSG_DEBUG, " skip - frequency not " 603 "allowed"); 604 continue; 605 } 606 607#ifdef CONFIG_P2P 608 /* 609 * TODO: skip the AP if its P2P IE has Group Formation 610 * bit set in the P2P Group Capability Bitmap and we 611 * are not in Group Formation with that device. 612 */ 613#endif /* CONFIG_P2P */ 614 615 /* Matching configuration found */ 616 return ssid; 617 } 618 619 /* No matching configuration found */ 620 return NULL; 621} 622 623 624static struct wpa_bss * 625wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s, 626 struct wpa_scan_results *scan_res, 627 struct wpa_ssid *group, 628 struct wpa_ssid **selected_ssid) 629{ 630 size_t i; 631 632 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d", 633 group->priority); 634 635 for (i = 0; i < scan_res->num; i++) { 636 struct wpa_scan_res *bss = scan_res->res[i]; 637 const u8 *ie, *ssid; 638 u8 ssid_len; 639 640 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group); 641 if (!*selected_ssid) 642 continue; 643 644 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID); 645 ssid = ie ? ie + 2 : (u8 *) ""; 646 ssid_len = ie ? ie[1] : 0; 647 648 wpa_dbg(wpa_s, MSG_DEBUG, " selected BSS " MACSTR 649 " ssid='%s'", 650 MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len)); 651 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len); 652 } 653 654 return NULL; 655} 656 657 658static struct wpa_bss * 659wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s, 660 struct wpa_scan_results *scan_res, 661 struct wpa_ssid **selected_ssid) 662{ 663 struct wpa_bss *selected = NULL; 664 int prio; 665 666 while (selected == NULL) { 667 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) { 668 selected = wpa_supplicant_select_bss( 669 wpa_s, scan_res, wpa_s->conf->pssid[prio], 670 selected_ssid); 671 if (selected) 672 break; 673 } 674 675 if (selected == NULL && wpa_s->blacklist) { 676 wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear " 677 "blacklist and try again"); 678 wpa_blacklist_clear(wpa_s); 679 wpa_s->blacklist_cleared++; 680 } else if (selected == NULL) 681 break; 682 } 683 684 return selected; 685} 686 687 688static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s, 689 int timeout_sec, int timeout_usec) 690{ 691 if (!wpa_supplicant_enabled_networks(wpa_s->conf)) { 692 /* 693 * No networks are enabled; short-circuit request so 694 * we don't wait timeout seconds before transitioning 695 * to INACTIVE state. 696 */ 697 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); 698 return; 699 } 700 wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec); 701} 702 703 704void wpa_supplicant_connect(struct wpa_supplicant *wpa_s, 705 struct wpa_bss *selected, 706 struct wpa_ssid *ssid) 707{ 708 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) { 709 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP 710 "PBC session overlap"); 711#ifdef CONFIG_P2P 712 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1) 713 return; 714#endif /* CONFIG_P2P */ 715 716#ifdef CONFIG_WPS 717 wpas_wps_cancel(wpa_s); 718#endif /* CONFIG_WPS */ 719 return; 720 } 721 722 /* 723 * Do not trigger new association unless the BSSID has changed or if 724 * reassociation is requested. If we are in process of associating with 725 * the selected BSSID, do not trigger new attempt. 726 */ 727 if ((wpa_s->reassociate 728#ifdef ANDROID_BRCM_P2P_PATCH 729 && (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0) 730 && (wpa_s->wpa_state != WPA_COMPLETED) 731#endif 732 )|| 733 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 && 734 ((wpa_s->wpa_state != WPA_ASSOCIATING && 735 wpa_s->wpa_state != WPA_AUTHENTICATING) || 736 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) != 737 0))) { 738 if (wpa_supplicant_scard_init(wpa_s, ssid)) { 739 wpa_supplicant_req_new_scan(wpa_s, 10, 0); 740 return; 741 } 742 wpa_msg(wpa_s, MSG_DEBUG, "Request association: " 743 "reassociate: %d selected: "MACSTR " bssid: " MACSTR 744 " pending: " MACSTR " wpa_state: %s", 745 wpa_s->reassociate, MAC2STR(selected->bssid), 746 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid), 747 wpa_supplicant_state_txt(wpa_s->wpa_state)); 748 wpa_supplicant_associate(wpa_s, selected, ssid); 749 } else { 750 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the " 751 "selected AP"); 752 } 753} 754 755 756static struct wpa_ssid * 757wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s) 758{ 759 int prio; 760 struct wpa_ssid *ssid; 761 762 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) { 763 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext) 764 { 765 if (ssid->disabled) 766 continue; 767 if (ssid->mode == IEEE80211_MODE_IBSS || 768 ssid->mode == IEEE80211_MODE_AP) 769 return ssid; 770 } 771 } 772 return NULL; 773} 774 775 776/* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based 777 * on BSS added and BSS changed events */ 778static void wpa_supplicant_rsn_preauth_scan_results( 779 struct wpa_supplicant *wpa_s) 780{ 781 struct wpa_bss *bss; 782 783 if (rsn_preauth_scan_results(wpa_s->wpa) < 0) 784 return; 785 786 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 787 const u8 *ssid, *rsn; 788 789 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID); 790 if (ssid == NULL) 791 continue; 792 793 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 794 if (rsn == NULL) 795 continue; 796 797 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn); 798 } 799 800} 801 802 803static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s, 804 struct wpa_bss *selected, 805 struct wpa_ssid *ssid, 806 struct wpa_scan_results *scan_res) 807{ 808 size_t i; 809 struct wpa_scan_res *current_bss = NULL; 810 int min_diff; 811 812 if (wpa_s->reassociate) 813 return 1; /* explicit request to reassociate */ 814 if (wpa_s->wpa_state < WPA_ASSOCIATED) 815 return 1; /* we are not associated; continue */ 816 if (wpa_s->current_ssid == NULL) 817 return 1; /* unknown current SSID */ 818 if (wpa_s->current_ssid != ssid) 819 return 1; /* different network block */ 820 821 for (i = 0; i < scan_res->num; i++) { 822 struct wpa_scan_res *res = scan_res->res[i]; 823 const u8 *ie; 824 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0) 825 continue; 826 827 ie = wpa_scan_get_ie(res, WLAN_EID_SSID); 828 if (ie == NULL) 829 continue; 830 if (ie[1] != wpa_s->current_ssid->ssid_len || 831 os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0) 832 continue; 833 current_bss = res; 834 break; 835 } 836 837 if (!current_bss) 838 return 1; /* current BSS not seen in scan results */ 839 840#ifdef CONFIG_ROAMING 841 wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation"); 842 wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d", 843 MAC2STR(current_bss->bssid), current_bss->level); 844 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d", 845 MAC2STR(selected->bssid), selected->level); 846 847 if (wpa_s->current_ssid->bssid_set && 848 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) == 849 0) { 850 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS " 851 "has preferred BSSID"); 852 return 1; 853 } 854 855 min_diff = 2; 856 if (current_bss->level < 0) { 857 if (current_bss->level < -85) 858 min_diff = 1; 859 else if (current_bss->level < -80) 860 min_diff = 2; 861 else if (current_bss->level < -75) 862 min_diff = 3; 863 else if (current_bss->level < -70) 864 min_diff = 4; 865 else 866 min_diff = 5; 867 } 868 if (abs(current_bss->level - selected->level) < min_diff) { 869 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference " 870 "in signal level"); 871 return 0; 872 } 873 874 return 1; 875#else 876 return 0; 877#endif 878} 879 880/* Return < 0 if no scan results could be fetched. */ 881static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s, 882 union wpa_event_data *data) 883{ 884 struct wpa_bss *selected; 885 struct wpa_ssid *ssid = NULL; 886 struct wpa_scan_results *scan_res; 887 int ap = 0; 888 889#ifdef CONFIG_AP 890 if (wpa_s->ap_iface) 891 ap = 1; 892#endif /* CONFIG_AP */ 893 894 wpa_supplicant_notify_scanning(wpa_s, 0); 895 896 scan_res = wpa_supplicant_get_scan_results(wpa_s, 897 data ? &data->scan_info : 898 NULL, 1); 899 if (scan_res == NULL) { 900 if (wpa_s->conf->ap_scan == 2 || ap) 901 return -1; 902 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try " 903 "scanning again"); 904 wpa_supplicant_req_new_scan(wpa_s, 1, 0); 905 return -1; 906 } 907 908#ifndef CONFIG_NO_RANDOM_POOL 909 size_t i, num; 910 num = scan_res->num; 911 if (num > 10) 912 num = 10; 913 for (i = 0; i < num; i++) { 914 u8 buf[5]; 915 struct wpa_scan_res *res = scan_res->res[i]; 916 buf[0] = res->bssid[5]; 917 buf[1] = res->qual & 0xff; 918 buf[2] = res->noise & 0xff; 919 buf[3] = res->level & 0xff; 920 buf[4] = res->tsf & 0xff; 921 random_add_randomness(buf, sizeof(buf)); 922 } 923#endif /* CONFIG_NO_RANDOM_POOL */ 924 925 if (wpa_s->scan_res_handler) { 926 void (*scan_res_handler)(struct wpa_supplicant *wpa_s, 927 struct wpa_scan_results *scan_res); 928 929 scan_res_handler = wpa_s->scan_res_handler; 930 wpa_s->scan_res_handler = NULL; 931 scan_res_handler(wpa_s, scan_res); 932 933 wpa_scan_results_free(scan_res); 934 return 0; 935 } 936 937 if (ap) { 938 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode"); 939#ifdef CONFIG_AP 940 if (wpa_s->ap_iface->scan_cb) 941 wpa_s->ap_iface->scan_cb(wpa_s->ap_iface); 942#endif /* CONFIG_AP */ 943 wpa_scan_results_free(scan_res); 944 return 0; 945 } 946 947 wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available"); 948 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS); 949 wpas_notify_scan_results(wpa_s); 950 951 wpas_notify_scan_done(wpa_s, 1); 952 953 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) { 954 wpa_scan_results_free(scan_res); 955 return 0; 956 } 957 958 if (wpa_s->disconnected) { 959 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 960 wpa_scan_results_free(scan_res); 961 return 0; 962 } 963 964 if (bgscan_notify_scan(wpa_s, scan_res) == 1) { 965 wpa_scan_results_free(scan_res); 966 return 0; 967 } 968 969 selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid); 970 971 if (selected) { 972 int skip; 973 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid, 974 scan_res); 975 wpa_scan_results_free(scan_res); 976 if (skip) 977 return 0; 978 wpa_supplicant_connect(wpa_s, selected, ssid); 979 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 980 } else { 981 wpa_scan_results_free(scan_res); 982 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found"); 983 ssid = wpa_supplicant_pick_new_network(wpa_s); 984 if (ssid) { 985 wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network"); 986 wpa_supplicant_associate(wpa_s, NULL, ssid); 987 wpa_supplicant_rsn_preauth_scan_results(wpa_s); 988 } else { 989 int timeout_sec = wpa_s->scan_interval; 990 int timeout_usec = 0; 991#ifdef CONFIG_P2P 992 if (wpa_s->p2p_in_provisioning) { 993 /* 994 * Use shorter wait during P2P Provisioning 995 * state to speed up group formation. 996 */ 997 timeout_sec = 0; 998 timeout_usec = 250000; 999 } 1000#endif /* CONFIG_P2P */ 1001 wpa_supplicant_req_new_scan(wpa_s, timeout_sec, 1002 timeout_usec); 1003 } 1004 } 1005 return 0; 1006} 1007 1008 1009static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s, 1010 union wpa_event_data *data) 1011{ 1012 const char *rn, *rn2; 1013 struct wpa_supplicant *ifs; 1014 1015 if (_wpa_supplicant_event_scan_results(wpa_s, data) < 0) { 1016 /* 1017 * If no scan results could be fetched, then no need to 1018 * notify those interfaces that did not actually request 1019 * this scan. 1020 */ 1021 return; 1022 } 1023 1024 /* 1025 * Check other interfaces to see if they have the same radio-name. If 1026 * so, they get updated with this same scan info. 1027 */ 1028 if (!wpa_s->driver->get_radio_name) 1029 return; 1030 1031 rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv); 1032 if (rn == NULL || rn[0] == '\0') 1033 return; 1034 1035 wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces " 1036 "sharing same radio (%s) in event_scan_results", rn); 1037 1038 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 1039 if (ifs == wpa_s || !ifs->driver->get_radio_name) 1040 continue; 1041 1042 rn2 = ifs->driver->get_radio_name(ifs->drv_priv); 1043 if (rn2 && os_strcmp(rn, rn2) == 0) { 1044 wpa_printf(MSG_DEBUG, "%s: Updating scan results from " 1045 "sibling", ifs->ifname); 1046 _wpa_supplicant_event_scan_results(ifs, data); 1047 } 1048 } 1049} 1050 1051#endif /* CONFIG_NO_SCAN_PROCESSING */ 1052 1053 1054static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s, 1055 union wpa_event_data *data) 1056{ 1057 int l, len, found = 0, wpa_found, rsn_found; 1058 const u8 *p; 1059 1060 wpa_dbg(wpa_s, MSG_DEBUG, "Association info event"); 1061 if (data->assoc_info.req_ies) 1062 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies, 1063 data->assoc_info.req_ies_len); 1064 if (data->assoc_info.resp_ies) { 1065 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies, 1066 data->assoc_info.resp_ies_len); 1067#ifdef CONFIG_TDLS 1068 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies, 1069 data->assoc_info.resp_ies_len); 1070#endif /* CONFIG_TDLS */ 1071 } 1072 if (data->assoc_info.beacon_ies) 1073 wpa_hexdump(MSG_DEBUG, "beacon_ies", 1074 data->assoc_info.beacon_ies, 1075 data->assoc_info.beacon_ies_len); 1076 if (data->assoc_info.freq) 1077 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz", 1078 data->assoc_info.freq); 1079 1080 p = data->assoc_info.req_ies; 1081 l = data->assoc_info.req_ies_len; 1082 1083 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */ 1084 while (p && l >= 2) { 1085 len = p[1] + 2; 1086 if (len > l) { 1087 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info", 1088 p, l); 1089 break; 1090 } 1091 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 && 1092 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) || 1093 (p[0] == WLAN_EID_RSN && p[1] >= 2)) { 1094 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len)) 1095 break; 1096 found = 1; 1097 wpa_find_assoc_pmkid(wpa_s); 1098 break; 1099 } 1100 l -= len; 1101 p += len; 1102 } 1103 if (!found && data->assoc_info.req_ies) 1104 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 1105 1106#ifdef CONFIG_IEEE80211R 1107#ifdef CONFIG_SME 1108 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) { 1109 u8 bssid[ETH_ALEN]; 1110 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 || 1111 wpa_ft_validate_reassoc_resp(wpa_s->wpa, 1112 data->assoc_info.resp_ies, 1113 data->assoc_info.resp_ies_len, 1114 bssid) < 0) { 1115 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of " 1116 "Reassociation Response failed"); 1117 wpa_supplicant_deauthenticate( 1118 wpa_s, WLAN_REASON_INVALID_IE); 1119 return -1; 1120 } 1121 } 1122 1123 p = data->assoc_info.resp_ies; 1124 l = data->assoc_info.resp_ies_len; 1125 1126#ifdef CONFIG_WPS_STRICT 1127 if (p && wpa_s->current_ssid && 1128 wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) { 1129 struct wpabuf *wps; 1130 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE); 1131 if (wps == NULL) { 1132 wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not " 1133 "include WPS IE in (Re)Association Response"); 1134 return -1; 1135 } 1136 1137 if (wps_validate_assoc_resp(wps) < 0) { 1138 wpabuf_free(wps); 1139 wpa_supplicant_deauthenticate( 1140 wpa_s, WLAN_REASON_INVALID_IE); 1141 return -1; 1142 } 1143 wpabuf_free(wps); 1144 } 1145#endif /* CONFIG_WPS_STRICT */ 1146 1147 /* Go through the IEs and make a copy of the MDIE, if present. */ 1148 while (p && l >= 2) { 1149 len = p[1] + 2; 1150 if (len > l) { 1151 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info", 1152 p, l); 1153 break; 1154 } 1155 if (p[0] == WLAN_EID_MOBILITY_DOMAIN && 1156 p[1] >= MOBILITY_DOMAIN_ID_LEN) { 1157 wpa_s->sme.ft_used = 1; 1158 os_memcpy(wpa_s->sme.mobility_domain, p + 2, 1159 MOBILITY_DOMAIN_ID_LEN); 1160 break; 1161 } 1162 l -= len; 1163 p += len; 1164 } 1165#endif /* CONFIG_SME */ 1166 1167 wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies, 1168 data->assoc_info.resp_ies_len); 1169#endif /* CONFIG_IEEE80211R */ 1170 1171 /* WPA/RSN IE from Beacon/ProbeResp */ 1172 p = data->assoc_info.beacon_ies; 1173 l = data->assoc_info.beacon_ies_len; 1174 1175 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present. 1176 */ 1177 wpa_found = rsn_found = 0; 1178 while (p && l >= 2) { 1179 len = p[1] + 2; 1180 if (len > l) { 1181 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies", 1182 p, l); 1183 break; 1184 } 1185 if (!wpa_found && 1186 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 && 1187 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) { 1188 wpa_found = 1; 1189 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len); 1190 } 1191 1192 if (!rsn_found && 1193 p[0] == WLAN_EID_RSN && p[1] >= 2) { 1194 rsn_found = 1; 1195 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len); 1196 } 1197 1198 l -= len; 1199 p += len; 1200 } 1201 1202 if (!wpa_found && data->assoc_info.beacon_ies) 1203 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0); 1204 if (!rsn_found && data->assoc_info.beacon_ies) 1205 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0); 1206 if (wpa_found || rsn_found) 1207 wpa_s->ap_ies_from_associnfo = 1; 1208 1209 if (wpa_s->assoc_freq && data->assoc_info.freq && 1210 wpa_s->assoc_freq != data->assoc_info.freq) { 1211 wpa_printf(MSG_DEBUG, "Operating frequency changed from " 1212 "%u to %u MHz", 1213 wpa_s->assoc_freq, data->assoc_info.freq); 1214 wpa_supplicant_update_scan_results(wpa_s); 1215 } 1216 1217 wpa_s->assoc_freq = data->assoc_info.freq; 1218 1219 return 0; 1220} 1221 1222 1223static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s, 1224 union wpa_event_data *data) 1225{ 1226 u8 bssid[ETH_ALEN]; 1227 int ft_completed; 1228 int bssid_changed; 1229 struct wpa_driver_capa capa; 1230 1231#ifdef CONFIG_AP 1232 if (wpa_s->ap_iface) { 1233 hostapd_notif_assoc(wpa_s->ap_iface->bss[0], 1234 data->assoc_info.addr, 1235 data->assoc_info.req_ies, 1236 data->assoc_info.req_ies_len, 1237 data->assoc_info.reassoc); 1238 return; 1239 } 1240#endif /* CONFIG_AP */ 1241 1242 ft_completed = wpa_ft_is_completed(wpa_s->wpa); 1243 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0) 1244 return; 1245 1246 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED); 1247 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) 1248 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN); 1249 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) || 1250 (wpa_drv_get_bssid(wpa_s, bssid) >= 0 && 1251 os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) { 1252 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID=" 1253 MACSTR, MAC2STR(bssid)); 1254 random_add_randomness(bssid, ETH_ALEN); 1255 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN); 1256 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN); 1257 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1258 if (bssid_changed) 1259 wpas_notify_bssid_changed(wpa_s); 1260 1261 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) { 1262 wpa_clear_keys(wpa_s, bssid); 1263 } 1264 if (wpa_supplicant_select_config(wpa_s) < 0) { 1265 wpa_supplicant_disassociate( 1266 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1267 return; 1268 } 1269 if (wpa_s->current_ssid) { 1270 struct wpa_bss *bss = NULL; 1271 struct wpa_ssid *ssid = wpa_s->current_ssid; 1272 if (ssid->ssid_len > 0) 1273 bss = wpa_bss_get(wpa_s, bssid, 1274 ssid->ssid, ssid->ssid_len); 1275 if (!bss) 1276 bss = wpa_bss_get_bssid(wpa_s, bssid); 1277 if (bss) 1278 wpa_s->current_bss = bss; 1279 } 1280 } 1281 1282#ifdef CONFIG_SME 1283 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN); 1284 wpa_s->sme.prev_bssid_set = 1; 1285#endif /* CONFIG_SME */ 1286 1287 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid)); 1288 if (wpa_s->current_ssid) { 1289 /* When using scanning (ap_scan=1), SIM PC/SC interface can be 1290 * initialized before association, but for other modes, 1291 * initialize PC/SC here, if the current configuration needs 1292 * smartcard or SIM/USIM. */ 1293 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid); 1294 } 1295 wpa_sm_notify_assoc(wpa_s->wpa, bssid); 1296 if (wpa_s->l2) 1297 l2_packet_notify_auth_start(wpa_s->l2); 1298 1299 /* 1300 * Set portEnabled first to FALSE in order to get EAP state machine out 1301 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE 1302 * state machine may transit to AUTHENTICATING state based on obsolete 1303 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to 1304 * AUTHENTICATED without ever giving chance to EAP state machine to 1305 * reset the state. 1306 */ 1307 if (!ft_completed) { 1308 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 1309 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 1310 } 1311 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed) 1312 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 1313 /* 802.1X::portControl = Auto */ 1314 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE); 1315 wpa_s->eapol_received = 0; 1316 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 1317 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE || 1318 (wpa_s->current_ssid && 1319 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) { 1320 wpa_supplicant_cancel_auth_timeout(wpa_s); 1321 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 1322 } else if (!ft_completed) { 1323 /* Timeout for receiving the first EAPOL packet */ 1324 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0); 1325 } 1326 wpa_supplicant_cancel_scan(wpa_s); 1327 1328 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 1329 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { 1330 /* 1331 * We are done; the driver will take care of RSN 4-way 1332 * handshake. 1333 */ 1334 wpa_supplicant_cancel_auth_timeout(wpa_s); 1335 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 1336 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 1337 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 1338 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 1339 wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) { 1340 /* 1341 * The driver will take care of RSN 4-way handshake, so we need 1342 * to allow EAPOL supplicant to complete its work without 1343 * waiting for WPA supplicant. 1344 */ 1345 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 1346 } else if (ft_completed) { 1347 /* 1348 * FT protocol completed - make sure EAPOL state machine ends 1349 * up in authenticated. 1350 */ 1351 wpa_supplicant_cancel_auth_timeout(wpa_s); 1352 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 1353 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 1354 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 1355 } 1356 1357 if (wpa_s->pending_eapol_rx) { 1358 struct os_time now, age; 1359 os_get_time(&now); 1360 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age); 1361 if (age.sec == 0 && age.usec < 100000 && 1362 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) == 1363 0) { 1364 wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL " 1365 "frame that was received just before " 1366 "association notification"); 1367 wpa_supplicant_rx_eapol( 1368 wpa_s, wpa_s->pending_eapol_rx_src, 1369 wpabuf_head(wpa_s->pending_eapol_rx), 1370 wpabuf_len(wpa_s->pending_eapol_rx)); 1371 } 1372 wpabuf_free(wpa_s->pending_eapol_rx); 1373 wpa_s->pending_eapol_rx = NULL; 1374 } 1375 1376 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 1377 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 1378 wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 && 1379 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) { 1380 /* Set static WEP keys again */ 1381 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid); 1382 } 1383 1384#ifdef CONFIG_IBSS_RSN 1385 if (wpa_s->current_ssid && 1386 wpa_s->current_ssid->mode == WPAS_MODE_IBSS && 1387 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 1388 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE && 1389 wpa_s->ibss_rsn == NULL) { 1390 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s); 1391 if (!wpa_s->ibss_rsn) { 1392 wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN"); 1393 wpa_supplicant_deauthenticate( 1394 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1395 return; 1396 } 1397 1398 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk); 1399 } 1400#endif /* CONFIG_IBSS_RSN */ 1401} 1402 1403 1404static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s, 1405 u16 reason_code) 1406{ 1407 const u8 *bssid; 1408 int authenticating; 1409 u8 prev_pending_bssid[ETH_ALEN]; 1410 1411 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING; 1412 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN); 1413 1414 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 1415 /* 1416 * At least Host AP driver and a Prism3 card seemed to be 1417 * generating streams of disconnected events when configuring 1418 * IBSS for WPA-None. Ignore them for now. 1419 */ 1420 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in " 1421 "IBSS/WPA-None mode"); 1422 return; 1423 } 1424 1425 if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE && 1426 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { 1427 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - " 1428 "pre-shared key may be incorrect"); 1429 } 1430 if (!wpa_s->auto_reconnect_disabled || 1431 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) { 1432 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect enabled: try to " 1433 "reconnect (wps=%d)", 1434 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS); 1435 if (wpa_s->wpa_state >= WPA_ASSOCIATING) 1436 wpa_supplicant_req_scan(wpa_s, 0, 500000); 1437 } else { 1438 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect disabled: do not " 1439 "try to re-connect"); 1440 wpa_s->reassociate = 0; 1441 wpa_s->disconnected = 1; 1442 } 1443 bssid = wpa_s->bssid; 1444 if (is_zero_ether_addr(bssid)) 1445 bssid = wpa_s->pending_bssid; 1446 wpas_connection_failed(wpa_s, bssid); 1447 wpa_sm_notify_disassoc(wpa_s->wpa); 1448 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR 1449 " reason=%d", 1450 MAC2STR(bssid), reason_code); 1451 if (wpa_supplicant_dynamic_keys(wpa_s)) { 1452 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys"); 1453 wpa_s->keys_cleared = 0; 1454 wpa_clear_keys(wpa_s, wpa_s->bssid); 1455 } 1456 wpa_supplicant_mark_disassoc(wpa_s); 1457 1458 if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) 1459 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid); 1460} 1461 1462 1463#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 1464static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, 1465 void *sock_ctx) 1466{ 1467 struct wpa_supplicant *wpa_s = eloop_ctx; 1468 1469 if (!wpa_s->pending_mic_error_report) 1470 return; 1471 1472 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report"); 1473 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise); 1474 wpa_s->pending_mic_error_report = 0; 1475} 1476#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 1477 1478 1479static void 1480wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s, 1481 union wpa_event_data *data) 1482{ 1483 int pairwise; 1484 struct os_time t; 1485 1486 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected"); 1487 pairwise = (data && data->michael_mic_failure.unicast); 1488 os_get_time(&t); 1489 if ((wpa_s->last_michael_mic_error && 1490 t.sec - wpa_s->last_michael_mic_error <= 60) || 1491 wpa_s->pending_mic_error_report) { 1492 if (wpa_s->pending_mic_error_report) { 1493 /* 1494 * Send the pending MIC error report immediately since 1495 * we are going to start countermeasures and AP better 1496 * do the same. 1497 */ 1498 wpa_sm_key_request(wpa_s->wpa, 1, 1499 wpa_s->pending_mic_error_pairwise); 1500 } 1501 1502 /* Send the new MIC error report immediately since we are going 1503 * to start countermeasures and AP better do the same. 1504 */ 1505 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 1506 1507 /* initialize countermeasures */ 1508 wpa_s->countermeasures = 1; 1509 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started"); 1510 1511 /* 1512 * Need to wait for completion of request frame. We do not get 1513 * any callback for the message completion, so just wait a 1514 * short while and hope for the best. */ 1515 os_sleep(0, 10000); 1516 1517 wpa_drv_set_countermeasures(wpa_s, 1); 1518 wpa_supplicant_deauthenticate(wpa_s, 1519 WLAN_REASON_MICHAEL_MIC_FAILURE); 1520 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, 1521 wpa_s, NULL); 1522 eloop_register_timeout(60, 0, 1523 wpa_supplicant_stop_countermeasures, 1524 wpa_s, NULL); 1525 /* TODO: mark the AP rejected for 60 second. STA is 1526 * allowed to associate with another AP.. */ 1527 } else { 1528#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 1529 if (wpa_s->mic_errors_seen) { 1530 /* 1531 * Reduce the effectiveness of Michael MIC error 1532 * reports as a means for attacking against TKIP if 1533 * more than one MIC failure is noticed with the same 1534 * PTK. We delay the transmission of the reports by a 1535 * random time between 0 and 60 seconds in order to 1536 * force the attacker wait 60 seconds before getting 1537 * the information on whether a frame resulted in a MIC 1538 * failure. 1539 */ 1540 u8 rval[4]; 1541 int sec; 1542 1543 if (os_get_random(rval, sizeof(rval)) < 0) 1544 sec = os_random() % 60; 1545 else 1546 sec = WPA_GET_BE32(rval) % 60; 1547 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error " 1548 "report %d seconds", sec); 1549 wpa_s->pending_mic_error_report = 1; 1550 wpa_s->pending_mic_error_pairwise = pairwise; 1551 eloop_cancel_timeout( 1552 wpa_supplicant_delayed_mic_error_report, 1553 wpa_s, NULL); 1554 eloop_register_timeout( 1555 sec, os_random() % 1000000, 1556 wpa_supplicant_delayed_mic_error_report, 1557 wpa_s, NULL); 1558 } else { 1559 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 1560 } 1561#else /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 1562 wpa_sm_key_request(wpa_s->wpa, 1, pairwise); 1563#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 1564 } 1565 wpa_s->last_michael_mic_error = t.sec; 1566 wpa_s->mic_errors_seen++; 1567} 1568 1569 1570#ifdef CONFIG_TERMINATE_ONLASTIF 1571static int any_interfaces(struct wpa_supplicant *head) 1572{ 1573 struct wpa_supplicant *wpa_s; 1574 1575 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next) 1576 if (!wpa_s->interface_removed) 1577 return 1; 1578 return 0; 1579} 1580#endif /* CONFIG_TERMINATE_ONLASTIF */ 1581 1582 1583static void 1584wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s, 1585 union wpa_event_data *data) 1586{ 1587 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0) 1588 return; 1589 1590 switch (data->interface_status.ievent) { 1591 case EVENT_INTERFACE_ADDED: 1592 if (!wpa_s->interface_removed) 1593 break; 1594 wpa_s->interface_removed = 0; 1595 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added"); 1596 if (wpa_supplicant_driver_init(wpa_s) < 0) { 1597 wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the " 1598 "driver after interface was added"); 1599 } 1600 break; 1601 case EVENT_INTERFACE_REMOVED: 1602 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed"); 1603 wpa_s->interface_removed = 1; 1604 wpa_supplicant_mark_disassoc(wpa_s); 1605 l2_packet_deinit(wpa_s->l2); 1606 wpa_s->l2 = NULL; 1607#ifdef CONFIG_IBSS_RSN 1608 ibss_rsn_deinit(wpa_s->ibss_rsn); 1609 wpa_s->ibss_rsn = NULL; 1610#endif /* CONFIG_IBSS_RSN */ 1611#ifdef CONFIG_TERMINATE_ONLASTIF 1612 /* check if last interface */ 1613 if (!any_interfaces(wpa_s->global->ifaces)) 1614 eloop_terminate(); 1615#endif /* CONFIG_TERMINATE_ONLASTIF */ 1616 break; 1617 } 1618} 1619 1620 1621#ifdef CONFIG_PEERKEY 1622static void 1623wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s, 1624 union wpa_event_data *data) 1625{ 1626 if (data == NULL) 1627 return; 1628 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer); 1629} 1630#endif /* CONFIG_PEERKEY */ 1631 1632 1633#ifdef CONFIG_TDLS 1634static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s, 1635 union wpa_event_data *data) 1636{ 1637 if (data == NULL) 1638 return; 1639 switch (data->tdls.oper) { 1640 case TDLS_REQUEST_SETUP: 1641 wpa_tdls_start(wpa_s->wpa, data->tdls.peer); 1642 break; 1643 case TDLS_REQUEST_TEARDOWN: 1644 /* request from driver to add FTIE */ 1645 wpa_tdls_recv_teardown_notify(wpa_s->wpa, data->tdls.peer, 1646 data->tdls.reason_code); 1647 break; 1648 } 1649} 1650#endif /* CONFIG_TDLS */ 1651 1652 1653#ifdef CONFIG_IEEE80211R 1654static void 1655wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s, 1656 union wpa_event_data *data) 1657{ 1658 if (data == NULL) 1659 return; 1660 1661 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies, 1662 data->ft_ies.ies_len, 1663 data->ft_ies.ft_action, 1664 data->ft_ies.target_ap, 1665 data->ft_ies.ric_ies, 1666 data->ft_ies.ric_ies_len) < 0) { 1667 /* TODO: prevent MLME/driver from trying to associate? */ 1668 } 1669} 1670#endif /* CONFIG_IEEE80211R */ 1671 1672 1673#ifdef CONFIG_IBSS_RSN 1674static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s, 1675 union wpa_event_data *data) 1676{ 1677 struct wpa_ssid *ssid; 1678 if (wpa_s->wpa_state < WPA_ASSOCIATED) 1679 return; 1680 if (data == NULL) 1681 return; 1682 ssid = wpa_s->current_ssid; 1683 if (ssid == NULL) 1684 return; 1685 if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt)) 1686 return; 1687 1688 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer); 1689} 1690#endif /* CONFIG_IBSS_RSN */ 1691 1692 1693#ifdef CONFIG_IEEE80211R 1694static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data, 1695 size_t len) 1696{ 1697 const u8 *sta_addr, *target_ap_addr; 1698 u16 status; 1699 1700 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len); 1701 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) 1702 return; /* only SME case supported for now */ 1703 if (len < 1 + 2 * ETH_ALEN + 2) 1704 return; 1705 if (data[0] != 2) 1706 return; /* Only FT Action Response is supported for now */ 1707 sta_addr = data + 1; 1708 target_ap_addr = data + 1 + ETH_ALEN; 1709 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN); 1710 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA " 1711 MACSTR " TargetAP " MACSTR " status %u", 1712 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status); 1713 1714 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) { 1715 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR 1716 " in FT Action Response", MAC2STR(sta_addr)); 1717 return; 1718 } 1719 1720 if (status) { 1721 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates " 1722 "failure (status code %d)", status); 1723 /* TODO: report error to FT code(?) */ 1724 return; 1725 } 1726 1727 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2, 1728 len - (1 + 2 * ETH_ALEN + 2), 1, 1729 target_ap_addr, NULL, 0) < 0) 1730 return; 1731 1732#ifdef CONFIG_SME 1733 { 1734 struct wpa_bss *bss; 1735 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr); 1736 if (bss) 1737 wpa_s->sme.freq = bss->freq; 1738 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT; 1739 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr, 1740 WLAN_AUTH_FT); 1741 } 1742#endif /* CONFIG_SME */ 1743} 1744#endif /* CONFIG_IEEE80211R */ 1745 1746 1747static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s, 1748 struct unprot_deauth *e) 1749{ 1750#ifdef CONFIG_IEEE80211W 1751 wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame " 1752 "dropped: " MACSTR " -> " MACSTR 1753 " (reason code %u)", 1754 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code); 1755 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code); 1756#endif /* CONFIG_IEEE80211W */ 1757} 1758 1759 1760static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s, 1761 struct unprot_disassoc *e) 1762{ 1763#ifdef CONFIG_IEEE80211W 1764 wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame " 1765 "dropped: " MACSTR " -> " MACSTR 1766 " (reason code %u)", 1767 MAC2STR(e->sa), MAC2STR(e->da), e->reason_code); 1768 sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code); 1769#endif /* CONFIG_IEEE80211W */ 1770} 1771 1772 1773void wpa_supplicant_event(void *ctx, enum wpa_event_type event, 1774 union wpa_event_data *data) 1775{ 1776 struct wpa_supplicant *wpa_s = ctx; 1777 u16 reason_code = 0; 1778 1779 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED && 1780 event != EVENT_INTERFACE_ENABLED && 1781 event != EVENT_INTERFACE_STATUS) { 1782 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore event %d while interface is " 1783 "disabled", event); 1784 return; 1785 } 1786 1787 wpa_dbg(wpa_s, MSG_DEBUG, "Event %d received on interface %s", 1788 event, wpa_s->ifname); 1789 1790 switch (event) { 1791 case EVENT_AUTH: 1792 sme_event_auth(wpa_s, data); 1793 break; 1794 case EVENT_ASSOC: 1795 wpa_supplicant_event_assoc(wpa_s, data); 1796 break; 1797 case EVENT_DISASSOC: 1798 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification"); 1799 if (data) { 1800 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u", 1801 data->disassoc_info.reason_code); 1802 if (data->disassoc_info.addr) 1803 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR, 1804 MAC2STR(data->disassoc_info.addr)); 1805 } 1806#ifdef CONFIG_AP 1807 if (wpa_s->ap_iface && data && data->disassoc_info.addr) { 1808 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], 1809 data->disassoc_info.addr); 1810 break; 1811 } 1812#endif /* CONFIG_AP */ 1813 if (data) { 1814 reason_code = data->disassoc_info.reason_code; 1815 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)", 1816 data->disassoc_info.ie, 1817 data->disassoc_info.ie_len); 1818#ifdef CONFIG_P2P 1819 wpas_p2p_disassoc_notif( 1820 wpa_s, data->disassoc_info.addr, reason_code, 1821 data->disassoc_info.ie, 1822 data->disassoc_info.ie_len); 1823#endif /* CONFIG_P2P */ 1824 } 1825 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 1826 sme_event_disassoc(wpa_s, data); 1827 /* fall through */ 1828 case EVENT_DEAUTH: 1829 if (event == EVENT_DEAUTH) { 1830 wpa_dbg(wpa_s, MSG_DEBUG, 1831 "Deauthentication notification"); 1832 if (data) { 1833 reason_code = data->deauth_info.reason_code; 1834 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u", 1835 data->deauth_info.reason_code); 1836 if (data->deauth_info.addr) { 1837 wpa_dbg(wpa_s, MSG_DEBUG, " * address " 1838 MACSTR, 1839 MAC2STR(data->deauth_info. 1840 addr)); 1841 } 1842 wpa_hexdump(MSG_DEBUG, 1843 "Deauthentication frame IE(s)", 1844 data->deauth_info.ie, 1845 data->deauth_info.ie_len); 1846#ifdef CONFIG_P2P 1847 wpas_p2p_deauth_notif( 1848 wpa_s, data->deauth_info.addr, 1849 reason_code, 1850 data->deauth_info.ie, 1851 data->deauth_info.ie_len); 1852#endif /* CONFIG_P2P */ 1853 } 1854 } 1855#ifdef CONFIG_AP 1856 if (wpa_s->ap_iface && data && data->deauth_info.addr) { 1857 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], 1858 data->deauth_info.addr); 1859 break; 1860 } 1861#endif /* CONFIG_AP */ 1862 wpa_supplicant_event_disassoc(wpa_s, reason_code); 1863 1864#if defined(ANDROID_BRCM_P2P_PATCH) && defined(CONFIG_P2P) 1865 wpas_p2p_group_remove_notif(wpa_s, reason_code); 1866#endif 1867 1868 break; 1869 case EVENT_MICHAEL_MIC_FAILURE: 1870 wpa_supplicant_event_michael_mic_failure(wpa_s, data); 1871 break; 1872#ifndef CONFIG_NO_SCAN_PROCESSING 1873 case EVENT_SCAN_RESULTS: 1874 wpa_supplicant_event_scan_results(wpa_s, data); 1875 break; 1876#endif /* CONFIG_NO_SCAN_PROCESSING */ 1877 case EVENT_ASSOCINFO: 1878 wpa_supplicant_event_associnfo(wpa_s, data); 1879 break; 1880 case EVENT_INTERFACE_STATUS: 1881 wpa_supplicant_event_interface_status(wpa_s, data); 1882 break; 1883 case EVENT_PMKID_CANDIDATE: 1884 wpa_supplicant_event_pmkid_candidate(wpa_s, data); 1885 break; 1886#ifdef CONFIG_PEERKEY 1887 case EVENT_STKSTART: 1888 wpa_supplicant_event_stkstart(wpa_s, data); 1889 break; 1890#endif /* CONFIG_PEERKEY */ 1891#ifdef CONFIG_TDLS 1892 case EVENT_TDLS: 1893 wpa_supplicant_event_tdls(wpa_s, data); 1894 break; 1895#endif /* CONFIG_TDLS */ 1896#ifdef CONFIG_IEEE80211R 1897 case EVENT_FT_RESPONSE: 1898 wpa_supplicant_event_ft_response(wpa_s, data); 1899 break; 1900#endif /* CONFIG_IEEE80211R */ 1901#ifdef CONFIG_IBSS_RSN 1902 case EVENT_IBSS_RSN_START: 1903 wpa_supplicant_event_ibss_rsn_start(wpa_s, data); 1904 break; 1905#endif /* CONFIG_IBSS_RSN */ 1906 case EVENT_ASSOC_REJECT: 1907 if (data->assoc_reject.bssid) 1908 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT 1909 "bssid=" MACSTR " status_code=%u", 1910 MAC2STR(data->assoc_reject.bssid), 1911 data->assoc_reject.status_code); 1912 else 1913 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT 1914 "status_code=%u", 1915 data->assoc_reject.status_code); 1916 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 1917 sme_event_assoc_reject(wpa_s, data); 1918 break; 1919 case EVENT_AUTH_TIMED_OUT: 1920 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 1921 sme_event_auth_timed_out(wpa_s, data); 1922 break; 1923 case EVENT_ASSOC_TIMED_OUT: 1924 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 1925 sme_event_assoc_timed_out(wpa_s, data); 1926 break; 1927#ifdef CONFIG_AP 1928 case EVENT_TX_STATUS: 1929 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR 1930 " type=%d stype=%d", 1931 MAC2STR(data->tx_status.dst), 1932 data->tx_status.type, data->tx_status.stype); 1933 if (wpa_s->ap_iface == NULL) { 1934#ifdef CONFIG_P2P 1935 if (data->tx_status.type == WLAN_FC_TYPE_MGMT && 1936 data->tx_status.stype == WLAN_FC_STYPE_ACTION) 1937 wpas_send_action_tx_status( 1938 wpa_s, data->tx_status.dst, 1939 data->tx_status.data, 1940 data->tx_status.data_len, 1941 data->tx_status.ack ? 1942 P2P_SEND_ACTION_SUCCESS : 1943 P2P_SEND_ACTION_NO_ACK); 1944#endif /* CONFIG_P2P */ 1945 break; 1946 } 1947#ifdef CONFIG_P2P 1948 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst=" 1949 MACSTR, MAC2STR(wpa_s->parent->pending_action_dst)); 1950 /* 1951 * Catch TX status events for Action frames we sent via group 1952 * interface in GO mode. 1953 */ 1954 if (data->tx_status.type == WLAN_FC_TYPE_MGMT && 1955 data->tx_status.stype == WLAN_FC_STYPE_ACTION && 1956 os_memcmp(wpa_s->parent->pending_action_dst, 1957 data->tx_status.dst, ETH_ALEN) == 0) { 1958 wpas_send_action_tx_status( 1959 wpa_s->parent, data->tx_status.dst, 1960 data->tx_status.data, 1961 data->tx_status.data_len, 1962 data->tx_status.ack ? 1963 P2P_SEND_ACTION_SUCCESS : 1964 P2P_SEND_ACTION_NO_ACK); 1965 break; 1966 } 1967#endif /* CONFIG_P2P */ 1968 switch (data->tx_status.type) { 1969 case WLAN_FC_TYPE_MGMT: 1970 ap_mgmt_tx_cb(wpa_s, data->tx_status.data, 1971 data->tx_status.data_len, 1972 data->tx_status.stype, 1973 data->tx_status.ack); 1974 break; 1975 case WLAN_FC_TYPE_DATA: 1976 ap_tx_status(wpa_s, data->tx_status.dst, 1977 data->tx_status.data, 1978 data->tx_status.data_len, 1979 data->tx_status.ack); 1980 break; 1981 } 1982 break; 1983 case EVENT_RX_FROM_UNKNOWN: 1984 if (wpa_s->ap_iface == NULL) 1985 break; 1986 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame, 1987 data->rx_from_unknown.len); 1988 break; 1989 case EVENT_RX_MGMT: 1990 if (wpa_s->ap_iface == NULL) { 1991#ifdef CONFIG_P2P 1992 u16 fc, stype; 1993 const struct ieee80211_mgmt *mgmt; 1994 mgmt = (const struct ieee80211_mgmt *) 1995 data->rx_mgmt.frame; 1996 fc = le_to_host16(mgmt->frame_control); 1997 stype = WLAN_FC_GET_STYPE(fc); 1998 if (stype == WLAN_FC_STYPE_PROBE_REQ && 1999 data->rx_mgmt.frame_len > 24) { 2000 const u8 *src = mgmt->sa; 2001 const u8 *ie = mgmt->u.probe_req.variable; 2002 size_t ie_len = data->rx_mgmt.frame_len - 2003 (mgmt->u.probe_req.variable - 2004 data->rx_mgmt.frame); 2005 #ifdef ANDROID_BRCM_P2P_PATCH 2006 wpa_printf(MSG_DEBUG, "Non-AP: Probe request frame "); 2007 { 2008 /* If we are Go or client, we need not reply the probe reqest on eth0 interface */ 2009 struct wpa_supplicant* ifs; 2010 int ignore = 0; 2011 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 2012 if ( (ifs->p2p_group_interface == P2P_GROUP_INTERFACE_GO ) ||(ifs->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT )) { 2013 wpa_printf(MSG_DEBUG, "Non-AP: NEERAJKG Ignoring Probe request"); 2014 ignore = 1; 2015 break; 2016 } 2017 } 2018 if(ignore) 2019 break; 2020 else 2021 wpa_printf(MSG_DEBUG, "Non-AP: Couln't Ignore Probe request %d", wpa_s->p2p_group_interface); 2022 } 2023 #endif 2024 wpas_p2p_probe_req_rx(wpa_s, src, ie, ie_len); 2025 break; 2026 } 2027#endif /* CONFIG_P2P */ 2028 wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received " 2029 "management frame in non-AP mode"); 2030 break; 2031 } 2032 ap_mgmt_rx(wpa_s, &data->rx_mgmt); 2033 break; 2034#endif /* CONFIG_AP */ 2035 case EVENT_RX_ACTION: 2036 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR 2037 " Category=%u DataLen=%d freq=%d MHz", 2038 MAC2STR(data->rx_action.sa), 2039 data->rx_action.category, (int) data->rx_action.len, 2040 data->rx_action.freq); 2041#ifdef CONFIG_IEEE80211R 2042 if (data->rx_action.category == WLAN_ACTION_FT) { 2043 ft_rx_action(wpa_s, data->rx_action.data, 2044 data->rx_action.len); 2045 break; 2046 } 2047#endif /* CONFIG_IEEE80211R */ 2048#ifdef CONFIG_IEEE80211W 2049#ifdef CONFIG_SME 2050 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) { 2051 sme_sa_query_rx(wpa_s, data->rx_action.sa, 2052 data->rx_action.data, 2053 data->rx_action.len); 2054 break; 2055 } 2056#endif /* CONFIG_SME */ 2057#endif /* CONFIG_IEEE80211W */ 2058#ifdef CONFIG_P2P 2059 wpas_p2p_rx_action(wpa_s, data->rx_action.da, 2060 data->rx_action.sa, 2061 data->rx_action.bssid, 2062 data->rx_action.category, 2063 data->rx_action.data, 2064 data->rx_action.len, data->rx_action.freq); 2065#endif /* CONFIG_P2P */ 2066 break; 2067 case EVENT_RX_PROBE_REQ: 2068 if (data->rx_probe_req.sa == NULL || 2069 data->rx_probe_req.ie == NULL) 2070 break; 2071#ifdef CONFIG_AP 2072 if (wpa_s->ap_iface) { 2073 hostapd_probe_req_rx(wpa_s->ap_iface->bss[0], 2074 data->rx_probe_req.sa, 2075 data->rx_probe_req.ie, 2076 data->rx_probe_req.ie_len); 2077 break; 2078 } 2079#endif /* CONFIG_AP */ 2080#ifdef CONFIG_P2P 2081 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa, 2082 data->rx_probe_req.ie, 2083 data->rx_probe_req.ie_len); 2084#endif /* CONFIG_P2P */ 2085 break; 2086#ifdef CONFIG_P2P 2087 case EVENT_REMAIN_ON_CHANNEL: 2088 wpas_p2p_remain_on_channel_cb( 2089 wpa_s, data->remain_on_channel.freq, 2090 data->remain_on_channel.duration); 2091 break; 2092 case EVENT_CANCEL_REMAIN_ON_CHANNEL: 2093 wpas_p2p_cancel_remain_on_channel_cb( 2094 wpa_s, data->remain_on_channel.freq); 2095 break; 2096 case EVENT_P2P_DEV_FOUND: { 2097 struct p2p_peer_info peer_info; 2098 2099 os_memset(&peer_info, 0, sizeof(peer_info)); 2100 if (data->p2p_dev_found.dev_addr) 2101 os_memcpy(peer_info.p2p_device_addr, 2102 data->p2p_dev_found.dev_addr, ETH_ALEN); 2103 if (data->p2p_dev_found.pri_dev_type) 2104 os_memcpy(peer_info.pri_dev_type, 2105 data->p2p_dev_found.pri_dev_type, 2106 sizeof(peer_info.pri_dev_type)); 2107 if (data->p2p_dev_found.dev_name) 2108 os_strlcpy(peer_info.device_name, 2109 data->p2p_dev_found.dev_name, 2110 sizeof(peer_info.device_name)); 2111 peer_info.config_methods = data->p2p_dev_found.config_methods; 2112 peer_info.dev_capab = data->p2p_dev_found.dev_capab; 2113 peer_info.group_capab = data->p2p_dev_found.group_capab; 2114 2115 /* 2116 * FIX: new_device=1 is not necessarily correct. We should 2117 * maintain a P2P peer database in wpa_supplicant and update 2118 * this information based on whether the peer is truly new. 2119 */ 2120 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1); 2121 break; 2122 } 2123 case EVENT_P2P_GO_NEG_REQ_RX: 2124 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src, 2125 data->p2p_go_neg_req_rx.dev_passwd_id); 2126 break; 2127 case EVENT_P2P_GO_NEG_COMPLETED: 2128 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res); 2129 break; 2130 case EVENT_P2P_PROV_DISC_REQUEST: 2131 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer, 2132 data->p2p_prov_disc_req.config_methods, 2133 data->p2p_prov_disc_req.dev_addr, 2134 data->p2p_prov_disc_req.pri_dev_type, 2135 data->p2p_prov_disc_req.dev_name, 2136 data->p2p_prov_disc_req.supp_config_methods, 2137 data->p2p_prov_disc_req.dev_capab, 2138 data->p2p_prov_disc_req.group_capab); 2139 break; 2140 case EVENT_P2P_PROV_DISC_RESPONSE: 2141 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer, 2142 data->p2p_prov_disc_resp.config_methods); 2143 break; 2144 case EVENT_P2P_SD_REQUEST: 2145 wpas_sd_request(wpa_s, data->p2p_sd_req.freq, 2146 data->p2p_sd_req.sa, 2147 data->p2p_sd_req.dialog_token, 2148 data->p2p_sd_req.update_indic, 2149 data->p2p_sd_req.tlvs, 2150 data->p2p_sd_req.tlvs_len); 2151 break; 2152 case EVENT_P2P_SD_RESPONSE: 2153 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa, 2154 data->p2p_sd_resp.update_indic, 2155 data->p2p_sd_resp.tlvs, 2156 data->p2p_sd_resp.tlvs_len); 2157 break; 2158#endif /* CONFIG_P2P */ 2159#ifdef CONFIG_CLIENT_MLME 2160 case EVENT_MLME_RX: { 2161 struct ieee80211_rx_status rx_status; 2162 os_memset(&rx_status, 0, sizeof(rx_status)); 2163 rx_status.freq = data->mlme_rx.freq; 2164 rx_status.channel = data->mlme_rx.channel; 2165 rx_status.ssi = data->mlme_rx.ssi; 2166 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len, 2167 &rx_status); 2168 break; 2169 } 2170#endif /* CONFIG_CLIENT_MLME */ 2171 case EVENT_EAPOL_RX: 2172 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src, 2173 data->eapol_rx.data, 2174 data->eapol_rx.data_len); 2175 break; 2176 case EVENT_SIGNAL_CHANGE: 2177 bgscan_notify_signal_change( 2178 wpa_s, data->signal_change.above_threshold, 2179 data->signal_change.current_signal, 2180 data->signal_change.current_noise, 2181 data->signal_change.current_txrate); 2182 break; 2183 case EVENT_INTERFACE_ENABLED: 2184 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled"); 2185 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { 2186#ifdef CONFIG_AP 2187 if (!wpa_s->ap_iface) { 2188 wpa_supplicant_set_state(wpa_s, 2189 WPA_DISCONNECTED); 2190 wpa_supplicant_req_scan(wpa_s, 0, 0); 2191 } else 2192 wpa_supplicant_set_state(wpa_s, 2193 WPA_COMPLETED); 2194#else /* CONFIG_AP */ 2195 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 2196 wpa_supplicant_req_scan(wpa_s, 0, 0); 2197#endif /* CONFIG_AP */ 2198 } 2199 break; 2200 case EVENT_INTERFACE_DISABLED: 2201 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled"); 2202 wpa_supplicant_mark_disassoc(wpa_s); 2203 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); 2204 break; 2205 case EVENT_CHANNEL_LIST_CHANGED: 2206 if (wpa_s->drv_priv == NULL) 2207 break; /* Ignore event during drv initialization */ 2208#ifdef CONFIG_P2P 2209 wpas_p2p_update_channel_list(wpa_s); 2210#endif /* CONFIG_P2P */ 2211 break; 2212 case EVENT_INTERFACE_UNAVAILABLE: 2213#ifdef CONFIG_P2P 2214 wpas_p2p_interface_unavailable(wpa_s); 2215#endif /* CONFIG_P2P */ 2216 break; 2217 case EVENT_BEST_CHANNEL: 2218 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received " 2219 "(%d %d %d)", 2220 data->best_chan.freq_24, data->best_chan.freq_5, 2221 data->best_chan.freq_overall); 2222 wpa_s->best_24_freq = data->best_chan.freq_24; 2223 wpa_s->best_5_freq = data->best_chan.freq_5; 2224 wpa_s->best_overall_freq = data->best_chan.freq_overall; 2225#ifdef CONFIG_P2P 2226 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24, 2227 data->best_chan.freq_5, 2228 data->best_chan.freq_overall); 2229#endif /* CONFIG_P2P */ 2230 break; 2231 case EVENT_UNPROT_DEAUTH: 2232 wpa_supplicant_event_unprot_deauth(wpa_s, 2233 &data->unprot_deauth); 2234 break; 2235 case EVENT_UNPROT_DISASSOC: 2236 wpa_supplicant_event_unprot_disassoc(wpa_s, 2237 &data->unprot_disassoc); 2238 break; 2239 case EVENT_STATION_LOW_ACK: 2240#ifdef CONFIG_AP 2241 if (wpa_s->ap_iface && data) 2242 hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0], 2243 data->low_ack.addr); 2244#endif /* CONFIG_AP */ 2245 break; 2246 case EVENT_IBSS_PEER_LOST: 2247#ifdef CONFIG_IBSS_RSN 2248 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer); 2249#endif /* CONFIG_IBSS_RSN */ 2250 break; 2251 default: 2252 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event); 2253 break; 2254 } 2255} 2256