1 /* 2 * wpa_supplicant - SME 3 * Copyright (c) 2009-2014, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "utils/eloop.h" 13 #include "common/ieee802_11_defs.h" 14 #include "common/ieee802_11_common.h" 15 #include "common/ocv.h" 16 #include "eapol_supp/eapol_supp_sm.h" 17 #include "common/wpa_common.h" 18 #include "common/sae.h" 19 #include "common/dpp.h" 20 #include "rsn_supp/wpa.h" 21 #include "rsn_supp/pmksa_cache.h" 22 #include "config.h" 23 #include "wpa_supplicant_i.h" 24 #include "driver_i.h" 25 #include "wpas_glue.h" 26 #include "wps_supplicant.h" 27 #include "p2p_supplicant.h" 28 #include "notify.h" 29 #include "bss.h" 30 #include "scan.h" 31 #include "sme.h" 32 #include "hs20_supplicant.h" 33 34 #define SME_AUTH_TIMEOUT 5 35 #define SME_ASSOC_TIMEOUT 5 36 37 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx); 38 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx); 39 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx); 40 #ifdef CONFIG_IEEE80211W 41 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s); 42 #endif /* CONFIG_IEEE80211W */ 43 44 45 #ifdef CONFIG_SAE 46 47 static int index_within_array(const int *array, int idx) 48 { 49 int i; 50 for (i = 0; i < idx; i++) { 51 if (array[i] <= 0) 52 return 0; 53 } 54 return 1; 55 } 56 57 58 static int sme_set_sae_group(struct wpa_supplicant *wpa_s) 59 { 60 int *groups = wpa_s->conf->sae_groups; 61 int default_groups[] = { 19, 20, 21, 0 }; 62 63 if (!groups || groups[0] <= 0) 64 groups = default_groups; 65 66 /* Configuration may have changed, so validate current index */ 67 if (!index_within_array(groups, wpa_s->sme.sae_group_index)) 68 return -1; 69 70 for (;;) { 71 int group = groups[wpa_s->sme.sae_group_index]; 72 if (group <= 0) 73 break; 74 if (sae_set_group(&wpa_s->sme.sae, group) == 0) { 75 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d", 76 wpa_s->sme.sae.group); 77 return 0; 78 } 79 wpa_s->sme.sae_group_index++; 80 } 81 82 return -1; 83 } 84 85 86 static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s, 87 struct wpa_ssid *ssid, 88 const u8 *bssid, int external, 89 int reuse) 90 { 91 struct wpabuf *buf; 92 size_t len; 93 const char *password; 94 95 #ifdef CONFIG_TESTING_OPTIONS 96 if (wpa_s->sae_commit_override) { 97 wpa_printf(MSG_DEBUG, "SAE: TESTING - commit override"); 98 buf = wpabuf_alloc(4 + wpabuf_len(wpa_s->sae_commit_override)); 99 if (!buf) 100 return NULL; 101 if (!external) { 102 wpabuf_put_le16(buf, 1); /* Transaction seq# */ 103 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); 104 } 105 wpabuf_put_buf(buf, wpa_s->sae_commit_override); 106 return buf; 107 } 108 #endif /* CONFIG_TESTING_OPTIONS */ 109 110 password = ssid->sae_password; 111 if (!password) 112 password = ssid->passphrase; 113 if (!password) { 114 wpa_printf(MSG_DEBUG, "SAE: No password available"); 115 return NULL; 116 } 117 118 if (reuse && wpa_s->sme.sae.tmp && 119 os_memcmp(bssid, wpa_s->sme.sae.tmp->bssid, ETH_ALEN) == 0) { 120 wpa_printf(MSG_DEBUG, 121 "SAE: Reuse previously generated PWE on a retry with the same AP"); 122 goto reuse_data; 123 } 124 if (sme_set_sae_group(wpa_s) < 0) { 125 wpa_printf(MSG_DEBUG, "SAE: Failed to select group"); 126 return NULL; 127 } 128 129 if (sae_prepare_commit(wpa_s->own_addr, bssid, 130 (u8 *) password, os_strlen(password), 131 ssid->sae_password_id, 132 &wpa_s->sme.sae) < 0) { 133 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE"); 134 return NULL; 135 } 136 if (wpa_s->sme.sae.tmp) 137 os_memcpy(wpa_s->sme.sae.tmp->bssid, bssid, ETH_ALEN); 138 139 reuse_data: 140 len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0; 141 if (ssid->sae_password_id) 142 len += 4 + os_strlen(ssid->sae_password_id); 143 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len); 144 if (buf == NULL) 145 return NULL; 146 if (!external) { 147 wpabuf_put_le16(buf, 1); /* Transaction seq# */ 148 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); 149 } 150 sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token, 151 ssid->sae_password_id); 152 153 return buf; 154 } 155 156 157 static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s, 158 int external) 159 { 160 struct wpabuf *buf; 161 162 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN); 163 if (buf == NULL) 164 return NULL; 165 166 if (!external) { 167 wpabuf_put_le16(buf, 2); /* Transaction seq# */ 168 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); 169 } 170 sae_write_confirm(&wpa_s->sme.sae, buf); 171 172 return buf; 173 } 174 175 #endif /* CONFIG_SAE */ 176 177 178 /** 179 * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt 180 * @wpa_s: Pointer to wpa_supplicant data 181 * @bss: Pointer to the bss which is the target of authentication attempt 182 */ 183 static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s, 184 struct wpa_bss *bss) 185 { 186 const u8 rrm_ie_len = 5; 187 u8 *pos; 188 const u8 *rrm_ie; 189 190 wpa_s->rrm.rrm_used = 0; 191 192 wpa_printf(MSG_DEBUG, 193 "RRM: Determining whether RRM can be used - device support: 0x%x", 194 wpa_s->drv_rrm_flags); 195 196 rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES); 197 if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) { 198 wpa_printf(MSG_DEBUG, "RRM: No RRM in network"); 199 return; 200 } 201 202 if (!((wpa_s->drv_rrm_flags & 203 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) && 204 (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) && 205 !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) { 206 wpa_printf(MSG_DEBUG, 207 "RRM: Insufficient RRM support in driver - do not use RRM"); 208 return; 209 } 210 211 if (sizeof(wpa_s->sme.assoc_req_ie) < 212 wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) { 213 wpa_printf(MSG_INFO, 214 "RRM: Unable to use RRM, no room for RRM IE"); 215 return; 216 } 217 218 wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request"); 219 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; 220 os_memset(pos, 0, 2 + rrm_ie_len); 221 *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES; 222 *pos++ = rrm_ie_len; 223 224 /* Set supported capabilites flags */ 225 if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) 226 *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT; 227 228 *pos |= WLAN_RRM_CAPS_BEACON_REPORT_PASSIVE | 229 WLAN_RRM_CAPS_BEACON_REPORT_ACTIVE | 230 WLAN_RRM_CAPS_BEACON_REPORT_TABLE; 231 232 if (wpa_s->lci) 233 pos[1] |= WLAN_RRM_CAPS_LCI_MEASUREMENT; 234 235 wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2; 236 wpa_s->rrm.rrm_used = 1; 237 } 238 239 240 static void sme_send_authentication(struct wpa_supplicant *wpa_s, 241 struct wpa_bss *bss, struct wpa_ssid *ssid, 242 int start) 243 { 244 struct wpa_driver_auth_params params; 245 struct wpa_ssid *old_ssid; 246 #ifdef CONFIG_IEEE80211R 247 const u8 *ie; 248 #endif /* CONFIG_IEEE80211R */ 249 #if defined(CONFIG_IEEE80211R) || defined(CONFIG_FILS) 250 const u8 *md = NULL; 251 #endif /* CONFIG_IEEE80211R || CONFIG_FILS */ 252 int i, bssid_changed; 253 struct wpabuf *resp = NULL; 254 u8 ext_capab[18]; 255 int ext_capab_len; 256 int skip_auth; 257 u8 *wpa_ie; 258 size_t wpa_ie_len; 259 #ifdef CONFIG_MBO 260 const u8 *mbo_ie; 261 #endif /* CONFIG_MBO */ 262 263 if (bss == NULL) { 264 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " 265 "the network"); 266 wpas_connect_work_done(wpa_s); 267 return; 268 } 269 270 skip_auth = wpa_s->conf->reassoc_same_bss_optim && 271 wpa_s->reassoc_same_bss; 272 wpa_s->current_bss = bss; 273 274 os_memset(¶ms, 0, sizeof(params)); 275 wpa_s->reassociate = 0; 276 277 params.freq = bss->freq; 278 params.bssid = bss->bssid; 279 params.ssid = bss->ssid; 280 params.ssid_len = bss->ssid_len; 281 params.p2p = ssid->p2p_group; 282 283 if (wpa_s->sme.ssid_len != params.ssid_len || 284 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) 285 wpa_s->sme.prev_bssid_set = 0; 286 287 wpa_s->sme.freq = params.freq; 288 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); 289 wpa_s->sme.ssid_len = params.ssid_len; 290 291 params.auth_alg = WPA_AUTH_ALG_OPEN; 292 #ifdef IEEE8021X_EAPOL 293 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 294 if (ssid->leap) { 295 if (ssid->non_leap == 0) 296 params.auth_alg = WPA_AUTH_ALG_LEAP; 297 else 298 params.auth_alg |= WPA_AUTH_ALG_LEAP; 299 } 300 } 301 #endif /* IEEE8021X_EAPOL */ 302 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", 303 params.auth_alg); 304 if (ssid->auth_alg) { 305 params.auth_alg = ssid->auth_alg; 306 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " 307 "0x%x", params.auth_alg); 308 } 309 #ifdef CONFIG_SAE 310 wpa_s->sme.sae_pmksa_caching = 0; 311 if (wpa_key_mgmt_sae(ssid->key_mgmt)) { 312 const u8 *rsn; 313 struct wpa_ie_data ied; 314 315 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 316 if (!rsn) { 317 wpa_dbg(wpa_s, MSG_DEBUG, 318 "SAE enabled, but target BSS does not advertise RSN"); 319 #ifdef CONFIG_DPP 320 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 && 321 (ssid->key_mgmt & WPA_KEY_MGMT_DPP) && 322 (ied.key_mgmt & WPA_KEY_MGMT_DPP)) { 323 wpa_dbg(wpa_s, MSG_DEBUG, "Prefer DPP over SAE when both are enabled"); 324 #endif /* CONFIG_DPP */ 325 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 && 326 wpa_key_mgmt_sae(ied.key_mgmt)) { 327 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg"); 328 params.auth_alg = WPA_AUTH_ALG_SAE; 329 } else { 330 wpa_dbg(wpa_s, MSG_DEBUG, 331 "SAE enabled, but target BSS does not advertise SAE AKM for RSN"); 332 } 333 } 334 #endif /* CONFIG_SAE */ 335 336 for (i = 0; i < NUM_WEP_KEYS; i++) { 337 if (ssid->wep_key_len[i]) 338 params.wep_key[i] = ssid->wep_key[i]; 339 params.wep_key_len[i] = ssid->wep_key_len[i]; 340 } 341 params.wep_tx_keyidx = ssid->wep_tx_keyidx; 342 343 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 344 os_memset(wpa_s->bssid, 0, ETH_ALEN); 345 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); 346 if (bssid_changed) 347 wpas_notify_bssid_changed(wpa_s); 348 349 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || 350 wpa_bss_get_ie(bss, WLAN_EID_RSN)) && 351 wpa_key_mgmt_wpa(ssid->key_mgmt)) { 352 int try_opportunistic; 353 const u8 *cache_id = NULL; 354 355 try_opportunistic = (ssid->proactive_key_caching < 0 ? 356 wpa_s->conf->okc : 357 ssid->proactive_key_caching) && 358 (ssid->proto & WPA_PROTO_RSN); 359 #ifdef CONFIG_FILS 360 if (wpa_key_mgmt_fils(ssid->key_mgmt)) 361 cache_id = wpa_bss_get_fils_cache_id(bss); 362 #endif /* CONFIG_FILS */ 363 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, 364 wpa_s->current_ssid, 365 try_opportunistic, cache_id, 366 0) == 0) 367 eapol_sm_notify_pmkid_attempt(wpa_s->eapol); 368 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); 369 if (wpa_supplicant_set_suites(wpa_s, bss, ssid, 370 wpa_s->sme.assoc_req_ie, 371 &wpa_s->sme.assoc_req_ie_len)) { 372 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " 373 "key management and encryption suites"); 374 wpas_connect_work_done(wpa_s); 375 return; 376 } 377 #ifdef CONFIG_HS20 378 } else if (wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE) && 379 (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)) { 380 /* No PMKSA caching, but otherwise similar to RSN/WPA */ 381 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); 382 if (wpa_supplicant_set_suites(wpa_s, bss, ssid, 383 wpa_s->sme.assoc_req_ie, 384 &wpa_s->sme.assoc_req_ie_len)) { 385 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " 386 "key management and encryption suites"); 387 wpas_connect_work_done(wpa_s); 388 return; 389 } 390 #endif /* CONFIG_HS20 */ 391 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 392 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { 393 /* 394 * Both WPA and non-WPA IEEE 802.1X enabled in configuration - 395 * use non-WPA since the scan results did not indicate that the 396 * AP is using WPA or WPA2. 397 */ 398 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 399 wpa_s->sme.assoc_req_ie_len = 0; 400 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { 401 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); 402 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, 403 wpa_s->sme.assoc_req_ie, 404 &wpa_s->sme.assoc_req_ie_len)) { 405 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " 406 "key management and encryption suites (no " 407 "scan results)"); 408 wpas_connect_work_done(wpa_s); 409 return; 410 } 411 #ifdef CONFIG_WPS 412 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 413 struct wpabuf *wps_ie; 414 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); 415 if (wps_ie && wpabuf_len(wps_ie) <= 416 sizeof(wpa_s->sme.assoc_req_ie)) { 417 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); 418 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), 419 wpa_s->sme.assoc_req_ie_len); 420 } else 421 wpa_s->sme.assoc_req_ie_len = 0; 422 wpabuf_free(wps_ie); 423 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 424 #endif /* CONFIG_WPS */ 425 } else { 426 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 427 wpa_s->sme.assoc_req_ie_len = 0; 428 } 429 430 /* In case the WPA vendor IE is used, it should be placed after all the 431 * non-vendor IEs, as the lower layer expects the IEs to be ordered as 432 * defined in the standard. Store the WPA IE so it can later be 433 * inserted at the correct location. 434 */ 435 wpa_ie = NULL; 436 wpa_ie_len = 0; 437 if (wpa_s->wpa_proto == WPA_PROTO_WPA) { 438 wpa_ie = os_memdup(wpa_s->sme.assoc_req_ie, 439 wpa_s->sme.assoc_req_ie_len); 440 if (wpa_ie) { 441 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Storing WPA IE"); 442 443 wpa_ie_len = wpa_s->sme.assoc_req_ie_len; 444 wpa_s->sme.assoc_req_ie_len = 0; 445 } else { 446 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed copy WPA IE"); 447 wpas_connect_work_done(wpa_s); 448 return; 449 } 450 } 451 452 #ifdef CONFIG_IEEE80211R 453 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); 454 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) 455 md = ie + 2; 456 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); 457 if (md && (!wpa_key_mgmt_ft(ssid->key_mgmt) || 458 !wpa_key_mgmt_ft(wpa_s->key_mgmt))) 459 md = NULL; 460 if (md) { 461 /* Prepare for the next transition */ 462 wpa_ft_prepare_auth_request(wpa_s->wpa, ie); 463 } 464 465 if (md) { 466 wpa_dbg(wpa_s, MSG_DEBUG, "SME: FT mobility domain %02x%02x", 467 md[0], md[1]); 468 469 if (wpa_s->sme.assoc_req_ie_len + 5 < 470 sizeof(wpa_s->sme.assoc_req_ie)) { 471 struct rsn_mdie *mdie; 472 u8 *pos = wpa_s->sme.assoc_req_ie + 473 wpa_s->sme.assoc_req_ie_len; 474 *pos++ = WLAN_EID_MOBILITY_DOMAIN; 475 *pos++ = sizeof(*mdie); 476 mdie = (struct rsn_mdie *) pos; 477 os_memcpy(mdie->mobility_domain, md, 478 MOBILITY_DOMAIN_ID_LEN); 479 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN]; 480 wpa_s->sme.assoc_req_ie_len += 5; 481 } 482 483 if (wpa_s->sme.prev_bssid_set && wpa_s->sme.ft_used && 484 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 && 485 wpa_sm_has_ptk(wpa_s->wpa)) { 486 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " 487 "over-the-air"); 488 params.auth_alg = WPA_AUTH_ALG_FT; 489 params.ie = wpa_s->sme.ft_ies; 490 params.ie_len = wpa_s->sme.ft_ies_len; 491 } 492 } 493 #endif /* CONFIG_IEEE80211R */ 494 495 #ifdef CONFIG_IEEE80211W 496 wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid); 497 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) { 498 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 499 struct wpa_ie_data _ie; 500 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 && 501 _ie.capabilities & 502 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { 503 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " 504 "MFP: require MFP"); 505 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; 506 } 507 } 508 #endif /* CONFIG_IEEE80211W */ 509 510 #ifdef CONFIG_P2P 511 if (wpa_s->global->p2p) { 512 u8 *pos; 513 size_t len; 514 int res; 515 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; 516 len = sizeof(wpa_s->sme.assoc_req_ie) - 517 wpa_s->sme.assoc_req_ie_len; 518 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, 519 ssid->p2p_group); 520 if (res >= 0) 521 wpa_s->sme.assoc_req_ie_len += res; 522 } 523 #endif /* CONFIG_P2P */ 524 525 #ifdef CONFIG_FST 526 if (wpa_s->fst_ies) { 527 int fst_ies_len = wpabuf_len(wpa_s->fst_ies); 528 529 if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <= 530 sizeof(wpa_s->sme.assoc_req_ie)) { 531 os_memcpy(wpa_s->sme.assoc_req_ie + 532 wpa_s->sme.assoc_req_ie_len, 533 wpabuf_head(wpa_s->fst_ies), 534 fst_ies_len); 535 wpa_s->sme.assoc_req_ie_len += fst_ies_len; 536 } 537 } 538 #endif /* CONFIG_FST */ 539 540 sme_auth_handle_rrm(wpa_s, bss); 541 542 wpa_s->sme.assoc_req_ie_len += wpas_supp_op_class_ie( 543 wpa_s, ssid, bss->freq, 544 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len, 545 sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len); 546 547 if (params.p2p) 548 wpa_drv_get_ext_capa(wpa_s, WPA_IF_P2P_CLIENT); 549 else 550 wpa_drv_get_ext_capa(wpa_s, WPA_IF_STATION); 551 552 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab, 553 sizeof(ext_capab)); 554 if (ext_capab_len > 0) { 555 u8 *pos = wpa_s->sme.assoc_req_ie; 556 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) 557 pos += 2 + pos[1]; 558 os_memmove(pos + ext_capab_len, pos, 559 wpa_s->sme.assoc_req_ie_len - 560 (pos - wpa_s->sme.assoc_req_ie)); 561 wpa_s->sme.assoc_req_ie_len += ext_capab_len; 562 os_memcpy(pos, ext_capab, ext_capab_len); 563 } 564 565 #ifdef CONFIG_HS20 566 if (is_hs20_network(wpa_s, ssid, bss)) { 567 struct wpabuf *hs20; 568 569 hs20 = wpabuf_alloc(20 + MAX_ROAMING_CONS_OI_LEN); 570 if (hs20) { 571 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid); 572 size_t len; 573 574 wpas_hs20_add_indication(hs20, pps_mo_id, 575 get_hs20_version(bss)); 576 wpas_hs20_add_roam_cons_sel(hs20, ssid); 577 len = sizeof(wpa_s->sme.assoc_req_ie) - 578 wpa_s->sme.assoc_req_ie_len; 579 if (wpabuf_len(hs20) <= len) { 580 os_memcpy(wpa_s->sme.assoc_req_ie + 581 wpa_s->sme.assoc_req_ie_len, 582 wpabuf_head(hs20), wpabuf_len(hs20)); 583 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20); 584 } 585 wpabuf_free(hs20); 586 } 587 } 588 #endif /* CONFIG_HS20 */ 589 590 if (wpa_ie) { 591 size_t len; 592 593 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Reinsert WPA IE"); 594 595 len = sizeof(wpa_s->sme.assoc_req_ie) - 596 wpa_s->sme.assoc_req_ie_len; 597 598 if (len > wpa_ie_len) { 599 os_memcpy(wpa_s->sme.assoc_req_ie + 600 wpa_s->sme.assoc_req_ie_len, 601 wpa_ie, wpa_ie_len); 602 wpa_s->sme.assoc_req_ie_len += wpa_ie_len; 603 } else { 604 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Failed to add WPA IE"); 605 } 606 607 os_free(wpa_ie); 608 } 609 610 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) { 611 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]; 612 size_t len; 613 614 len = sizeof(wpa_s->sme.assoc_req_ie) - 615 wpa_s->sme.assoc_req_ie_len; 616 if (wpabuf_len(buf) <= len) { 617 os_memcpy(wpa_s->sme.assoc_req_ie + 618 wpa_s->sme.assoc_req_ie_len, 619 wpabuf_head(buf), wpabuf_len(buf)); 620 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf); 621 } 622 } 623 624 #ifdef CONFIG_MBO 625 mbo_ie = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE); 626 if (mbo_ie) { 627 int len; 628 629 len = wpas_mbo_ie(wpa_s, wpa_s->sme.assoc_req_ie + 630 wpa_s->sme.assoc_req_ie_len, 631 sizeof(wpa_s->sme.assoc_req_ie) - 632 wpa_s->sme.assoc_req_ie_len, 633 !!mbo_attr_from_mbo_ie(mbo_ie, 634 OCE_ATTR_ID_CAPA_IND)); 635 if (len >= 0) 636 wpa_s->sme.assoc_req_ie_len += len; 637 } 638 #endif /* CONFIG_MBO */ 639 640 #ifdef CONFIG_SAE 641 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE && 642 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0, 643 NULL, 644 wpa_s->key_mgmt == WPA_KEY_MGMT_FT_SAE ? 645 WPA_KEY_MGMT_FT_SAE : 646 WPA_KEY_MGMT_SAE) == 0) { 647 wpa_dbg(wpa_s, MSG_DEBUG, 648 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication"); 649 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa); 650 params.auth_alg = WPA_AUTH_ALG_OPEN; 651 wpa_s->sme.sae_pmksa_caching = 1; 652 } 653 654 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) { 655 if (start) 656 resp = sme_auth_build_sae_commit(wpa_s, ssid, 657 bss->bssid, 0, 658 start == 2); 659 else 660 resp = sme_auth_build_sae_confirm(wpa_s, 0); 661 if (resp == NULL) { 662 wpas_connection_failed(wpa_s, bss->bssid); 663 return; 664 } 665 params.auth_data = wpabuf_head(resp); 666 params.auth_data_len = wpabuf_len(resp); 667 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED; 668 } 669 #endif /* CONFIG_SAE */ 670 671 old_ssid = wpa_s->current_ssid; 672 wpa_s->current_ssid = ssid; 673 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 674 wpa_supplicant_initiate_eapol(wpa_s); 675 676 #ifdef CONFIG_FILS 677 /* TODO: FILS operations can in some cases be done between different 678 * network_ctx (i.e., same credentials can be used with multiple 679 * networks). */ 680 if (params.auth_alg == WPA_AUTH_ALG_OPEN && 681 wpa_key_mgmt_fils(ssid->key_mgmt)) { 682 const u8 *indic; 683 u16 fils_info; 684 const u8 *realm, *username, *rrk; 685 size_t realm_len, username_len, rrk_len; 686 u16 next_seq_num; 687 688 /* 689 * Check FILS Indication element (FILS Information field) bits 690 * indicating supported authentication algorithms against local 691 * configuration (ssid->fils_dh_group). Try to use FILS 692 * authentication only if the AP supports the combination in the 693 * network profile. */ 694 indic = wpa_bss_get_ie(bss, WLAN_EID_FILS_INDICATION); 695 if (!indic || indic[1] < 2) { 696 wpa_printf(MSG_DEBUG, "SME: " MACSTR 697 " does not include FILS Indication element - cannot use FILS authentication with it", 698 MAC2STR(bss->bssid)); 699 goto no_fils; 700 } 701 702 fils_info = WPA_GET_LE16(indic + 2); 703 if (ssid->fils_dh_group == 0 && !(fils_info & BIT(9))) { 704 wpa_printf(MSG_DEBUG, "SME: " MACSTR 705 " does not support FILS SK without PFS - cannot use FILS authentication with it", 706 MAC2STR(bss->bssid)); 707 goto no_fils; 708 } 709 if (ssid->fils_dh_group != 0 && !(fils_info & BIT(10))) { 710 wpa_printf(MSG_DEBUG, "SME: " MACSTR 711 " does not support FILS SK with PFS - cannot use FILS authentication with it", 712 MAC2STR(bss->bssid)); 713 goto no_fils; 714 } 715 716 if (wpa_s->last_con_fail_realm && 717 eapol_sm_get_erp_info(wpa_s->eapol, &ssid->eap, 718 &username, &username_len, 719 &realm, &realm_len, &next_seq_num, 720 &rrk, &rrk_len) == 0 && 721 realm && realm_len == wpa_s->last_con_fail_realm_len && 722 os_memcmp(realm, wpa_s->last_con_fail_realm, 723 realm_len) == 0) { 724 wpa_printf(MSG_DEBUG, 725 "SME: FILS authentication for this realm failed last time - try to regenerate ERP key hierarchy"); 726 goto no_fils; 727 } 728 729 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, 730 ssid, 0, 731 wpa_bss_get_fils_cache_id(bss), 732 0) == 0) 733 wpa_printf(MSG_DEBUG, 734 "SME: Try to use FILS with PMKSA caching"); 735 resp = fils_build_auth(wpa_s->wpa, ssid->fils_dh_group, md); 736 if (resp) { 737 int auth_alg; 738 739 if (ssid->fils_dh_group) 740 wpa_printf(MSG_DEBUG, 741 "SME: Try to use FILS SK authentication with PFS (DH Group %u)", 742 ssid->fils_dh_group); 743 else 744 wpa_printf(MSG_DEBUG, 745 "SME: Try to use FILS SK authentication without PFS"); 746 auth_alg = ssid->fils_dh_group ? 747 WPA_AUTH_ALG_FILS_SK_PFS : WPA_AUTH_ALG_FILS; 748 params.auth_alg = auth_alg; 749 params.auth_data = wpabuf_head(resp); 750 params.auth_data_len = wpabuf_len(resp); 751 wpa_s->sme.auth_alg = auth_alg; 752 } 753 } 754 no_fils: 755 #endif /* CONFIG_FILS */ 756 757 wpa_supplicant_cancel_sched_scan(wpa_s); 758 wpa_supplicant_cancel_scan(wpa_s); 759 760 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR 761 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), 762 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); 763 764 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 765 wpa_clear_keys(wpa_s, bss->bssid); 766 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); 767 if (old_ssid != wpa_s->current_ssid) 768 wpas_notify_network_changed(wpa_s); 769 770 #ifdef CONFIG_HS20 771 hs20_configure_frame_filters(wpa_s); 772 #endif /* CONFIG_HS20 */ 773 774 #ifdef CONFIG_P2P 775 /* 776 * If multi-channel concurrency is not supported, check for any 777 * frequency conflict. In case of any frequency conflict, remove the 778 * least prioritized connection. 779 */ 780 if (wpa_s->num_multichan_concurrent < 2) { 781 int freq, num; 782 num = get_shared_radio_freqs(wpa_s, &freq, 1); 783 if (num > 0 && freq > 0 && freq != params.freq) { 784 wpa_printf(MSG_DEBUG, 785 "Conflicting frequency found (%d != %d)", 786 freq, params.freq); 787 if (wpas_p2p_handle_frequency_conflicts(wpa_s, 788 params.freq, 789 ssid) < 0) { 790 wpas_connection_failed(wpa_s, bss->bssid); 791 wpa_supplicant_mark_disassoc(wpa_s); 792 wpabuf_free(resp); 793 wpas_connect_work_done(wpa_s); 794 return; 795 } 796 } 797 } 798 #endif /* CONFIG_P2P */ 799 800 if (skip_auth) { 801 wpa_msg(wpa_s, MSG_DEBUG, 802 "SME: Skip authentication step on reassoc-to-same-BSS"); 803 wpabuf_free(resp); 804 sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN); 805 return; 806 } 807 808 809 wpa_s->sme.auth_alg = params.auth_alg; 810 if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { 811 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " 812 "driver failed"); 813 wpas_connection_failed(wpa_s, bss->bssid); 814 wpa_supplicant_mark_disassoc(wpa_s); 815 wpabuf_free(resp); 816 wpas_connect_work_done(wpa_s); 817 return; 818 } 819 820 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, 821 NULL); 822 823 /* 824 * Association will be started based on the authentication event from 825 * the driver. 826 */ 827 828 wpabuf_free(resp); 829 } 830 831 832 static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit) 833 { 834 struct wpa_connect_work *cwork = work->ctx; 835 struct wpa_supplicant *wpa_s = work->wpa_s; 836 837 if (deinit) { 838 if (work->started) 839 wpa_s->connect_work = NULL; 840 841 wpas_connect_work_free(cwork); 842 return; 843 } 844 845 wpa_s->connect_work = work; 846 847 if (cwork->bss_removed || 848 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) || 849 wpas_network_disabled(wpa_s, cwork->ssid)) { 850 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt"); 851 wpas_connect_work_done(wpa_s); 852 return; 853 } 854 855 /* Starting new connection, so clear the possibly used WPA IE from the 856 * previous association. */ 857 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 858 859 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1); 860 } 861 862 863 void sme_authenticate(struct wpa_supplicant *wpa_s, 864 struct wpa_bss *bss, struct wpa_ssid *ssid) 865 { 866 struct wpa_connect_work *cwork; 867 868 if (bss == NULL || ssid == NULL) 869 return; 870 if (wpa_s->connect_work) { 871 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist"); 872 return; 873 } 874 875 if (radio_work_pending(wpa_s, "sme-connect")) { 876 /* 877 * The previous sme-connect work might no longer be valid due to 878 * the fact that the BSS list was updated. In addition, it makes 879 * sense to adhere to the 'newer' decision. 880 */ 881 wpa_dbg(wpa_s, MSG_DEBUG, 882 "SME: Remove previous pending sme-connect"); 883 radio_remove_works(wpa_s, "sme-connect", 0); 884 } 885 886 wpas_abort_ongoing_scan(wpa_s); 887 888 cwork = os_zalloc(sizeof(*cwork)); 889 if (cwork == NULL) 890 return; 891 cwork->bss = bss; 892 cwork->ssid = ssid; 893 cwork->sme = 1; 894 895 #ifdef CONFIG_SAE 896 wpa_s->sme.sae.state = SAE_NOTHING; 897 wpa_s->sme.sae.send_confirm = 0; 898 wpa_s->sme.sae_group_index = 0; 899 #endif /* CONFIG_SAE */ 900 901 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1, 902 sme_auth_start_cb, cwork) < 0) 903 wpas_connect_work_free(cwork); 904 } 905 906 907 #ifdef CONFIG_SAE 908 909 static int sme_external_auth_build_buf(struct wpabuf *buf, 910 struct wpabuf *params, 911 const u8 *sa, const u8 *da, 912 u16 auth_transaction, u16 seq_num) 913 { 914 struct ieee80211_mgmt *resp; 915 916 resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt, 917 u.auth.variable)); 918 919 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) | 920 (WLAN_FC_STYPE_AUTH << 4)); 921 os_memcpy(resp->da, da, ETH_ALEN); 922 os_memcpy(resp->sa, sa, ETH_ALEN); 923 os_memcpy(resp->bssid, da, ETH_ALEN); 924 resp->u.auth.auth_alg = host_to_le16(WLAN_AUTH_SAE); 925 resp->seq_ctrl = host_to_le16(seq_num << 4); 926 resp->u.auth.auth_transaction = host_to_le16(auth_transaction); 927 resp->u.auth.status_code = host_to_le16(WLAN_STATUS_SUCCESS); 928 if (params) 929 wpabuf_put_buf(buf, params); 930 931 return 0; 932 } 933 934 935 static void sme_external_auth_send_sae_commit(struct wpa_supplicant *wpa_s, 936 const u8 *bssid, 937 struct wpa_ssid *ssid) 938 { 939 struct wpabuf *resp, *buf; 940 941 resp = sme_auth_build_sae_commit(wpa_s, ssid, bssid, 1, 0); 942 if (!resp) 943 return; 944 945 wpa_s->sme.sae.state = SAE_COMMITTED; 946 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + wpabuf_len(resp)); 947 if (!buf) { 948 wpabuf_free(resp); 949 return; 950 } 951 952 wpa_s->sme.seq_num++; 953 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr, 954 bssid, 1, wpa_s->sme.seq_num); 955 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0); 956 wpabuf_free(resp); 957 wpabuf_free(buf); 958 } 959 960 961 static void sme_send_external_auth_status(struct wpa_supplicant *wpa_s, 962 u16 status) 963 { 964 struct external_auth params; 965 966 os_memset(¶ms, 0, sizeof(params)); 967 params.status = status; 968 params.ssid = wpa_s->sme.ext_auth_ssid; 969 params.ssid_len = wpa_s->sme.ext_auth_ssid_len; 970 params.bssid = wpa_s->sme.ext_auth_bssid; 971 wpa_drv_send_external_auth_status(wpa_s, ¶ms); 972 } 973 974 975 static void sme_handle_external_auth_start(struct wpa_supplicant *wpa_s, 976 union wpa_event_data *data) 977 { 978 struct wpa_ssid *ssid; 979 size_t ssid_str_len = data->external_auth.ssid_len; 980 const u8 *ssid_str = data->external_auth.ssid; 981 982 /* Get the SSID conf from the ssid string obtained */ 983 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 984 if (!wpas_network_disabled(wpa_s, ssid) && 985 ssid_str_len == ssid->ssid_len && 986 os_memcmp(ssid_str, ssid->ssid, ssid_str_len) == 0 && 987 (ssid->key_mgmt & (WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE))) 988 break; 989 } 990 if (ssid) 991 sme_external_auth_send_sae_commit(wpa_s, 992 data->external_auth.bssid, 993 ssid); 994 else 995 sme_send_external_auth_status(wpa_s, 996 WLAN_STATUS_UNSPECIFIED_FAILURE); 997 } 998 999 1000 static void sme_external_auth_send_sae_confirm(struct wpa_supplicant *wpa_s, 1001 const u8 *da) 1002 { 1003 struct wpabuf *resp, *buf; 1004 1005 resp = sme_auth_build_sae_confirm(wpa_s, 1); 1006 if (!resp) { 1007 wpa_printf(MSG_DEBUG, "SAE: Confirm message buf alloc failure"); 1008 return; 1009 } 1010 1011 wpa_s->sme.sae.state = SAE_CONFIRMED; 1012 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN + wpabuf_len(resp)); 1013 if (!buf) { 1014 wpa_printf(MSG_DEBUG, "SAE: Auth Confirm buf alloc failure"); 1015 wpabuf_free(resp); 1016 return; 1017 } 1018 wpa_s->sme.seq_num++; 1019 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr, 1020 da, 2, wpa_s->sme.seq_num); 1021 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0); 1022 wpabuf_free(resp); 1023 wpabuf_free(buf); 1024 } 1025 1026 1027 void sme_external_auth_trigger(struct wpa_supplicant *wpa_s, 1028 union wpa_event_data *data) 1029 { 1030 if (RSN_SELECTOR_GET(&data->external_auth.key_mgmt_suite) != 1031 RSN_AUTH_KEY_MGMT_SAE) 1032 return; 1033 1034 if (data->external_auth.action == EXT_AUTH_START) { 1035 if (!data->external_auth.bssid || !data->external_auth.ssid) 1036 return; 1037 os_memcpy(wpa_s->sme.ext_auth_bssid, data->external_auth.bssid, 1038 ETH_ALEN); 1039 os_memcpy(wpa_s->sme.ext_auth_ssid, data->external_auth.ssid, 1040 data->external_auth.ssid_len); 1041 wpa_s->sme.ext_auth_ssid_len = data->external_auth.ssid_len; 1042 wpa_s->sme.seq_num = 0; 1043 wpa_s->sme.sae.state = SAE_NOTHING; 1044 wpa_s->sme.sae.send_confirm = 0; 1045 wpa_s->sme.sae_group_index = 0; 1046 sme_handle_external_auth_start(wpa_s, data); 1047 } else if (data->external_auth.action == EXT_AUTH_ABORT) { 1048 /* Report failure to driver for the wrong trigger */ 1049 sme_send_external_auth_status(wpa_s, 1050 WLAN_STATUS_UNSPECIFIED_FAILURE); 1051 } 1052 } 1053 1054 1055 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction, 1056 u16 status_code, const u8 *data, size_t len, 1057 int external, const u8 *sa) 1058 { 1059 int *groups; 1060 1061 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u " 1062 "status code %u", auth_transaction, status_code); 1063 1064 if (auth_transaction == 1 && 1065 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ && 1066 wpa_s->sme.sae.state == SAE_COMMITTED && 1067 (external || wpa_s->current_bss) && wpa_s->current_ssid) { 1068 int default_groups[] = { 19, 20, 21, 0 }; 1069 u16 group; 1070 1071 groups = wpa_s->conf->sae_groups; 1072 if (!groups || groups[0] <= 0) 1073 groups = default_groups; 1074 1075 if (len < sizeof(le16)) { 1076 wpa_dbg(wpa_s, MSG_DEBUG, 1077 "SME: Too short SAE anti-clogging token request"); 1078 return -1; 1079 } 1080 group = WPA_GET_LE16(data); 1081 wpa_dbg(wpa_s, MSG_DEBUG, 1082 "SME: SAE anti-clogging token requested (group %u)", 1083 group); 1084 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) != 1085 WLAN_STATUS_SUCCESS) { 1086 wpa_dbg(wpa_s, MSG_ERROR, 1087 "SME: SAE group %u of anti-clogging request is invalid", 1088 group); 1089 return -1; 1090 } 1091 wpabuf_free(wpa_s->sme.sae_token); 1092 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16), 1093 len - sizeof(le16)); 1094 if (!external) 1095 sme_send_authentication(wpa_s, wpa_s->current_bss, 1096 wpa_s->current_ssid, 2); 1097 else 1098 sme_external_auth_send_sae_commit( 1099 wpa_s, wpa_s->sme.ext_auth_bssid, 1100 wpa_s->current_ssid); 1101 return 0; 1102 } 1103 1104 if (auth_transaction == 1 && 1105 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED && 1106 wpa_s->sme.sae.state == SAE_COMMITTED && 1107 (external || wpa_s->current_bss) && wpa_s->current_ssid) { 1108 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported"); 1109 wpa_s->sme.sae_group_index++; 1110 if (sme_set_sae_group(wpa_s) < 0) 1111 return -1; /* no other groups enabled */ 1112 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group"); 1113 if (!external) 1114 sme_send_authentication(wpa_s, wpa_s->current_bss, 1115 wpa_s->current_ssid, 1); 1116 else 1117 sme_external_auth_send_sae_commit( 1118 wpa_s, wpa_s->sme.ext_auth_bssid, 1119 wpa_s->current_ssid); 1120 return 0; 1121 } 1122 1123 if (auth_transaction == 1 && 1124 status_code == WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER) { 1125 const u8 *bssid = sa ? sa : wpa_s->pending_bssid; 1126 1127 wpa_msg(wpa_s, MSG_INFO, 1128 WPA_EVENT_SAE_UNKNOWN_PASSWORD_IDENTIFIER MACSTR, 1129 MAC2STR(bssid)); 1130 return -1; 1131 } 1132 1133 if (status_code != WLAN_STATUS_SUCCESS) 1134 return -1; 1135 1136 if (auth_transaction == 1) { 1137 u16 res; 1138 1139 groups = wpa_s->conf->sae_groups; 1140 1141 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit"); 1142 if ((!external && wpa_s->current_bss == NULL) || 1143 wpa_s->current_ssid == NULL) 1144 return -1; 1145 if (wpa_s->sme.sae.state != SAE_COMMITTED) 1146 return -1; 1147 if (groups && groups[0] <= 0) 1148 groups = NULL; 1149 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL, 1150 groups); 1151 if (res == SAE_SILENTLY_DISCARD) { 1152 wpa_printf(MSG_DEBUG, 1153 "SAE: Drop commit message due to reflection attack"); 1154 return 0; 1155 } 1156 if (res != WLAN_STATUS_SUCCESS) 1157 return -1; 1158 1159 if (sae_process_commit(&wpa_s->sme.sae) < 0) { 1160 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer " 1161 "commit"); 1162 return -1; 1163 } 1164 1165 wpabuf_free(wpa_s->sme.sae_token); 1166 wpa_s->sme.sae_token = NULL; 1167 if (!external) 1168 sme_send_authentication(wpa_s, wpa_s->current_bss, 1169 wpa_s->current_ssid, 0); 1170 else 1171 sme_external_auth_send_sae_confirm(wpa_s, sa); 1172 return 0; 1173 } else if (auth_transaction == 2) { 1174 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm"); 1175 if (wpa_s->sme.sae.state != SAE_CONFIRMED) 1176 return -1; 1177 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0) 1178 return -1; 1179 wpa_s->sme.sae.state = SAE_ACCEPTED; 1180 sae_clear_temp_data(&wpa_s->sme.sae); 1181 1182 if (external) { 1183 /* Report success to driver */ 1184 sme_send_external_auth_status(wpa_s, 1185 WLAN_STATUS_SUCCESS); 1186 } 1187 1188 return 1; 1189 } 1190 1191 return -1; 1192 } 1193 1194 1195 void sme_external_auth_mgmt_rx(struct wpa_supplicant *wpa_s, 1196 const u8 *auth_frame, size_t len) 1197 { 1198 const struct ieee80211_mgmt *header; 1199 size_t auth_length; 1200 1201 header = (const struct ieee80211_mgmt *) auth_frame; 1202 auth_length = IEEE80211_HDRLEN + sizeof(header->u.auth); 1203 1204 if (len < auth_length) { 1205 /* Notify failure to the driver */ 1206 sme_send_external_auth_status(wpa_s, 1207 WLAN_STATUS_UNSPECIFIED_FAILURE); 1208 return; 1209 } 1210 1211 if (le_to_host16(header->u.auth.auth_alg) == WLAN_AUTH_SAE) { 1212 int res; 1213 1214 res = sme_sae_auth( 1215 wpa_s, le_to_host16(header->u.auth.auth_transaction), 1216 le_to_host16(header->u.auth.status_code), 1217 header->u.auth.variable, 1218 len - auth_length, 1, header->sa); 1219 if (res < 0) { 1220 /* Notify failure to the driver */ 1221 sme_send_external_auth_status( 1222 wpa_s, WLAN_STATUS_UNSPECIFIED_FAILURE); 1223 return; 1224 } 1225 if (res != 1) 1226 return; 1227 1228 wpa_printf(MSG_DEBUG, 1229 "SME: SAE completed - setting PMK for 4-way handshake"); 1230 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN, 1231 wpa_s->sme.sae.pmkid, wpa_s->pending_bssid); 1232 } 1233 } 1234 1235 #endif /* CONFIG_SAE */ 1236 1237 1238 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data) 1239 { 1240 struct wpa_ssid *ssid = wpa_s->current_ssid; 1241 1242 if (ssid == NULL) { 1243 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " 1244 "when network is not selected"); 1245 return; 1246 } 1247 1248 if (wpa_s->wpa_state != WPA_AUTHENTICATING) { 1249 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " 1250 "when not in authenticating state"); 1251 return; 1252 } 1253 1254 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) { 1255 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with " 1256 "unexpected peer " MACSTR, 1257 MAC2STR(data->auth.peer)); 1258 return; 1259 } 1260 1261 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR 1262 " auth_type=%d auth_transaction=%d status_code=%d", 1263 MAC2STR(data->auth.peer), data->auth.auth_type, 1264 data->auth.auth_transaction, data->auth.status_code); 1265 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs", 1266 data->auth.ies, data->auth.ies_len); 1267 1268 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 1269 1270 #ifdef CONFIG_SAE 1271 if (data->auth.auth_type == WLAN_AUTH_SAE) { 1272 int res; 1273 res = sme_sae_auth(wpa_s, data->auth.auth_transaction, 1274 data->auth.status_code, data->auth.ies, 1275 data->auth.ies_len, 0, NULL); 1276 if (res < 0) { 1277 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1278 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1279 1280 } 1281 if (res != 1) 1282 return; 1283 1284 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for " 1285 "4-way handshake"); 1286 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN, 1287 wpa_s->sme.sae.pmkid, wpa_s->pending_bssid); 1288 } 1289 #endif /* CONFIG_SAE */ 1290 1291 if (data->auth.status_code != WLAN_STATUS_SUCCESS) { 1292 char *ie_txt = NULL; 1293 1294 if (data->auth.ies && data->auth.ies_len) { 1295 size_t buflen = 2 * data->auth.ies_len + 1; 1296 ie_txt = os_malloc(buflen); 1297 if (ie_txt) { 1298 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies, 1299 data->auth.ies_len); 1300 } 1301 } 1302 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR 1303 " auth_type=%u auth_transaction=%u status_code=%u%s%s", 1304 MAC2STR(data->auth.peer), data->auth.auth_type, 1305 data->auth.auth_transaction, data->auth.status_code, 1306 ie_txt ? " ie=" : "", 1307 ie_txt ? ie_txt : ""); 1308 os_free(ie_txt); 1309 1310 #ifdef CONFIG_FILS 1311 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS || 1312 wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS_SK_PFS) 1313 fils_connection_failure(wpa_s); 1314 #endif /* CONFIG_FILS */ 1315 1316 if (data->auth.status_code != 1317 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG || 1318 wpa_s->sme.auth_alg == data->auth.auth_type || 1319 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) { 1320 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1321 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1322 return; 1323 } 1324 1325 wpas_connect_work_done(wpa_s); 1326 1327 switch (data->auth.auth_type) { 1328 case WLAN_AUTH_OPEN: 1329 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED; 1330 1331 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth"); 1332 wpa_supplicant_associate(wpa_s, wpa_s->current_bss, 1333 wpa_s->current_ssid); 1334 return; 1335 1336 case WLAN_AUTH_SHARED_KEY: 1337 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP; 1338 1339 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth"); 1340 wpa_supplicant_associate(wpa_s, wpa_s->current_bss, 1341 wpa_s->current_ssid); 1342 return; 1343 1344 default: 1345 return; 1346 } 1347 } 1348 1349 #ifdef CONFIG_IEEE80211R 1350 if (data->auth.auth_type == WLAN_AUTH_FT) { 1351 const u8 *ric_ies = NULL; 1352 size_t ric_ies_len = 0; 1353 1354 if (wpa_s->ric_ies) { 1355 ric_ies = wpabuf_head(wpa_s->ric_ies); 1356 ric_ies_len = wpabuf_len(wpa_s->ric_ies); 1357 } 1358 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies, 1359 data->auth.ies_len, 0, 1360 data->auth.peer, 1361 ric_ies, ric_ies_len) < 0) { 1362 wpa_dbg(wpa_s, MSG_DEBUG, 1363 "SME: FT Authentication response processing failed"); 1364 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" 1365 MACSTR 1366 " reason=%d locally_generated=1", 1367 MAC2STR(wpa_s->pending_bssid), 1368 WLAN_REASON_DEAUTH_LEAVING); 1369 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1370 wpa_supplicant_mark_disassoc(wpa_s); 1371 return; 1372 } 1373 } 1374 #endif /* CONFIG_IEEE80211R */ 1375 1376 #ifdef CONFIG_FILS 1377 if (data->auth.auth_type == WLAN_AUTH_FILS_SK || 1378 data->auth.auth_type == WLAN_AUTH_FILS_SK_PFS) { 1379 u16 expect_auth_type; 1380 1381 expect_auth_type = wpa_s->sme.auth_alg == 1382 WPA_AUTH_ALG_FILS_SK_PFS ? WLAN_AUTH_FILS_SK_PFS : 1383 WLAN_AUTH_FILS_SK; 1384 if (data->auth.auth_type != expect_auth_type) { 1385 wpa_dbg(wpa_s, MSG_DEBUG, 1386 "SME: FILS Authentication response used different auth alg (%u; expected %u)", 1387 data->auth.auth_type, expect_auth_type); 1388 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" 1389 MACSTR 1390 " reason=%d locally_generated=1", 1391 MAC2STR(wpa_s->pending_bssid), 1392 WLAN_REASON_DEAUTH_LEAVING); 1393 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1394 wpa_supplicant_mark_disassoc(wpa_s); 1395 return; 1396 } 1397 1398 if (fils_process_auth(wpa_s->wpa, wpa_s->pending_bssid, 1399 data->auth.ies, data->auth.ies_len) < 0) { 1400 wpa_dbg(wpa_s, MSG_DEBUG, 1401 "SME: FILS Authentication response processing failed"); 1402 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" 1403 MACSTR 1404 " reason=%d locally_generated=1", 1405 MAC2STR(wpa_s->pending_bssid), 1406 WLAN_REASON_DEAUTH_LEAVING); 1407 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1408 wpa_supplicant_mark_disassoc(wpa_s); 1409 return; 1410 } 1411 } 1412 #endif /* CONFIG_FILS */ 1413 1414 sme_associate(wpa_s, ssid->mode, data->auth.peer, 1415 data->auth.auth_type); 1416 } 1417 1418 1419 #ifdef CONFIG_IEEE80211R 1420 static void remove_ie(u8 *buf, size_t *len, u8 eid) 1421 { 1422 u8 *pos, *next, *end; 1423 1424 pos = (u8 *) get_ie(buf, *len, eid); 1425 if (pos) { 1426 next = pos + 2 + pos[1]; 1427 end = buf + *len; 1428 *len -= 2 + pos[1]; 1429 os_memmove(pos, next, end - next); 1430 } 1431 } 1432 #endif /* CONFIG_IEEE80211R */ 1433 1434 1435 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode, 1436 const u8 *bssid, u16 auth_type) 1437 { 1438 struct wpa_driver_associate_params params; 1439 struct ieee802_11_elems elems; 1440 #ifdef CONFIG_FILS 1441 u8 nonces[2 * FILS_NONCE_LEN]; 1442 #endif /* CONFIG_FILS */ 1443 #ifdef CONFIG_HT_OVERRIDES 1444 struct ieee80211_ht_capabilities htcaps; 1445 struct ieee80211_ht_capabilities htcaps_mask; 1446 #endif /* CONFIG_HT_OVERRIDES */ 1447 #ifdef CONFIG_VHT_OVERRIDES 1448 struct ieee80211_vht_capabilities vhtcaps; 1449 struct ieee80211_vht_capabilities vhtcaps_mask; 1450 #endif /* CONFIG_VHT_OVERRIDES */ 1451 1452 os_memset(¶ms, 0, sizeof(params)); 1453 1454 #ifdef CONFIG_FILS 1455 if (auth_type == WLAN_AUTH_FILS_SK || 1456 auth_type == WLAN_AUTH_FILS_SK_PFS) { 1457 struct wpabuf *buf; 1458 const u8 *snonce, *anonce; 1459 const unsigned int max_hlp = 20; 1460 struct wpabuf *hlp[max_hlp]; 1461 unsigned int i, num_hlp = 0; 1462 struct fils_hlp_req *req; 1463 1464 dl_list_for_each(req, &wpa_s->fils_hlp_req, struct fils_hlp_req, 1465 list) { 1466 hlp[num_hlp] = wpabuf_alloc(2 * ETH_ALEN + 6 + 1467 wpabuf_len(req->pkt)); 1468 if (!hlp[num_hlp]) 1469 break; 1470 wpabuf_put_data(hlp[num_hlp], req->dst, ETH_ALEN); 1471 wpabuf_put_data(hlp[num_hlp], wpa_s->own_addr, 1472 ETH_ALEN); 1473 wpabuf_put_data(hlp[num_hlp], 1474 "\xaa\xaa\x03\x00\x00\x00", 6); 1475 wpabuf_put_buf(hlp[num_hlp], req->pkt); 1476 num_hlp++; 1477 if (num_hlp >= max_hlp) 1478 break; 1479 } 1480 1481 buf = fils_build_assoc_req(wpa_s->wpa, ¶ms.fils_kek, 1482 ¶ms.fils_kek_len, &snonce, 1483 &anonce, 1484 (const struct wpabuf **) hlp, 1485 num_hlp); 1486 for (i = 0; i < num_hlp; i++) 1487 wpabuf_free(hlp[i]); 1488 if (!buf) 1489 return; 1490 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req before FILS elements", 1491 wpa_s->sme.assoc_req_ie, 1492 wpa_s->sme.assoc_req_ie_len); 1493 #ifdef CONFIG_IEEE80211R 1494 if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) { 1495 /* Remove RSNE and MDE to allow them to be overridden 1496 * with FILS+FT specific values from 1497 * fils_build_assoc_req(). */ 1498 remove_ie(wpa_s->sme.assoc_req_ie, 1499 &wpa_s->sme.assoc_req_ie_len, 1500 WLAN_EID_RSN); 1501 wpa_hexdump(MSG_DEBUG, 1502 "FILS: assoc_req after RSNE removal", 1503 wpa_s->sme.assoc_req_ie, 1504 wpa_s->sme.assoc_req_ie_len); 1505 remove_ie(wpa_s->sme.assoc_req_ie, 1506 &wpa_s->sme.assoc_req_ie_len, 1507 WLAN_EID_MOBILITY_DOMAIN); 1508 wpa_hexdump(MSG_DEBUG, 1509 "FILS: assoc_req after MDE removal", 1510 wpa_s->sme.assoc_req_ie, 1511 wpa_s->sme.assoc_req_ie_len); 1512 } 1513 #endif /* CONFIG_IEEE80211R */ 1514 /* TODO: Make wpa_s->sme.assoc_req_ie use dynamic allocation */ 1515 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(buf) > 1516 sizeof(wpa_s->sme.assoc_req_ie)) { 1517 wpa_printf(MSG_ERROR, 1518 "FILS: Not enough buffer room for own AssocReq elements"); 1519 wpabuf_free(buf); 1520 return; 1521 } 1522 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len, 1523 wpabuf_head(buf), wpabuf_len(buf)); 1524 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf); 1525 wpabuf_free(buf); 1526 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req after FILS elements", 1527 wpa_s->sme.assoc_req_ie, 1528 wpa_s->sme.assoc_req_ie_len); 1529 1530 os_memcpy(nonces, snonce, FILS_NONCE_LEN); 1531 os_memcpy(nonces + FILS_NONCE_LEN, anonce, FILS_NONCE_LEN); 1532 params.fils_nonces = nonces; 1533 params.fils_nonces_len = sizeof(nonces); 1534 } 1535 #endif /* CONFIG_FILS */ 1536 1537 #ifdef CONFIG_OWE 1538 #ifdef CONFIG_TESTING_OPTIONS 1539 if (get_ie_ext(wpa_s->sme.assoc_req_ie, wpa_s->sme.assoc_req_ie_len, 1540 WLAN_EID_EXT_OWE_DH_PARAM)) { 1541 wpa_printf(MSG_INFO, "TESTING: Override OWE DH element"); 1542 } else 1543 #endif /* CONFIG_TESTING_OPTIONS */ 1544 if (auth_type == WLAN_AUTH_OPEN && 1545 wpa_s->key_mgmt == WPA_KEY_MGMT_OWE) { 1546 struct wpabuf *owe_ie; 1547 u16 group; 1548 1549 if (wpa_s->current_ssid && wpa_s->current_ssid->owe_group) { 1550 group = wpa_s->current_ssid->owe_group; 1551 } else if (wpa_s->assoc_status_code == 1552 WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED) { 1553 if (wpa_s->last_owe_group == 19) 1554 group = 20; 1555 else if (wpa_s->last_owe_group == 20) 1556 group = 21; 1557 else 1558 group = OWE_DH_GROUP; 1559 } else { 1560 group = OWE_DH_GROUP; 1561 } 1562 1563 wpa_s->last_owe_group = group; 1564 wpa_printf(MSG_DEBUG, "OWE: Try to use group %u", group); 1565 owe_ie = owe_build_assoc_req(wpa_s->wpa, group); 1566 if (!owe_ie) { 1567 wpa_printf(MSG_ERROR, 1568 "OWE: Failed to build IE for Association Request frame"); 1569 return; 1570 } 1571 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(owe_ie) > 1572 sizeof(wpa_s->sme.assoc_req_ie)) { 1573 wpa_printf(MSG_ERROR, 1574 "OWE: Not enough buffer room for own Association Request frame elements"); 1575 wpabuf_free(owe_ie); 1576 return; 1577 } 1578 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len, 1579 wpabuf_head(owe_ie), wpabuf_len(owe_ie)); 1580 wpa_s->sme.assoc_req_ie_len += wpabuf_len(owe_ie); 1581 wpabuf_free(owe_ie); 1582 } 1583 #endif /* CONFIG_OWE */ 1584 1585 #ifdef CONFIG_DPP2 1586 if (wpa_s->key_mgmt == WPA_KEY_MGMT_DPP && wpa_s->current_ssid && 1587 wpa_s->current_ssid->dpp_netaccesskey) { 1588 struct wpa_ssid *ssid = wpa_s->current_ssid; 1589 1590 dpp_pfs_free(wpa_s->dpp_pfs); 1591 wpa_s->dpp_pfs = dpp_pfs_init(ssid->dpp_netaccesskey, 1592 ssid->dpp_netaccesskey_len); 1593 if (!wpa_s->dpp_pfs) { 1594 wpa_printf(MSG_DEBUG, "DPP: Could not initialize PFS"); 1595 /* Try to continue without PFS */ 1596 goto pfs_fail; 1597 } 1598 if (wpa_s->sme.assoc_req_ie_len + 1599 wpabuf_len(wpa_s->dpp_pfs->ie) > 1600 sizeof(wpa_s->sme.assoc_req_ie)) { 1601 wpa_printf(MSG_ERROR, 1602 "DPP: Not enough buffer room for own Association Request frame elements"); 1603 dpp_pfs_free(wpa_s->dpp_pfs); 1604 wpa_s->dpp_pfs = NULL; 1605 goto pfs_fail; 1606 } 1607 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len, 1608 wpabuf_head(wpa_s->dpp_pfs->ie), 1609 wpabuf_len(wpa_s->dpp_pfs->ie)); 1610 wpa_s->sme.assoc_req_ie_len += wpabuf_len(wpa_s->dpp_pfs->ie); 1611 } 1612 pfs_fail: 1613 #endif /* CONFIG_DPP2 */ 1614 1615 if (wpa_s->current_ssid && wpa_s->current_ssid->multi_ap_backhaul_sta) { 1616 size_t multi_ap_ie_len; 1617 1618 multi_ap_ie_len = add_multi_ap_ie( 1619 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len, 1620 sizeof(wpa_s->sme.assoc_req_ie) - 1621 wpa_s->sme.assoc_req_ie_len, 1622 MULTI_AP_BACKHAUL_STA); 1623 if (multi_ap_ie_len == 0) { 1624 wpa_printf(MSG_ERROR, 1625 "Multi-AP: Failed to build Multi-AP IE"); 1626 return; 1627 } 1628 wpa_s->sme.assoc_req_ie_len += multi_ap_ie_len; 1629 } 1630 1631 params.bssid = bssid; 1632 params.ssid = wpa_s->sme.ssid; 1633 params.ssid_len = wpa_s->sme.ssid_len; 1634 params.freq.freq = wpa_s->sme.freq; 1635 params.bg_scan_period = wpa_s->current_ssid ? 1636 wpa_s->current_ssid->bg_scan_period : -1; 1637 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ? 1638 wpa_s->sme.assoc_req_ie : NULL; 1639 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len; 1640 wpa_hexdump(MSG_DEBUG, "SME: Association Request IEs", 1641 params.wpa_ie, params.wpa_ie_len); 1642 params.pairwise_suite = wpa_s->pairwise_cipher; 1643 params.group_suite = wpa_s->group_cipher; 1644 params.mgmt_group_suite = wpa_s->mgmt_group_cipher; 1645 params.key_mgmt_suite = wpa_s->key_mgmt; 1646 params.wpa_proto = wpa_s->wpa_proto; 1647 #ifdef CONFIG_HT_OVERRIDES 1648 os_memset(&htcaps, 0, sizeof(htcaps)); 1649 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); 1650 params.htcaps = (u8 *) &htcaps; 1651 params.htcaps_mask = (u8 *) &htcaps_mask; 1652 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); 1653 #endif /* CONFIG_HT_OVERRIDES */ 1654 #ifdef CONFIG_VHT_OVERRIDES 1655 os_memset(&vhtcaps, 0, sizeof(vhtcaps)); 1656 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask)); 1657 params.vhtcaps = &vhtcaps; 1658 params.vhtcaps_mask = &vhtcaps_mask; 1659 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); 1660 #endif /* CONFIG_VHT_OVERRIDES */ 1661 #ifdef CONFIG_IEEE80211R 1662 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies && 1663 get_ie(wpa_s->sme.ft_ies, wpa_s->sme.ft_ies_len, 1664 WLAN_EID_RIC_DATA)) { 1665 /* There seems to be a pretty inconvenient bug in the Linux 1666 * kernel IE splitting functionality when RIC is used. For now, 1667 * skip correct behavior in IE construction here (i.e., drop the 1668 * additional non-FT-specific IEs) to avoid kernel issues. This 1669 * is fine since RIC is used only for testing purposes in the 1670 * current implementation. */ 1671 wpa_printf(MSG_INFO, 1672 "SME: Linux kernel workaround - do not try to include additional IEs with RIC"); 1673 params.wpa_ie = wpa_s->sme.ft_ies; 1674 params.wpa_ie_len = wpa_s->sme.ft_ies_len; 1675 } else if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) { 1676 const u8 *rm_en, *pos, *end; 1677 size_t rm_en_len = 0; 1678 u8 *rm_en_dup = NULL, *wpos; 1679 1680 /* Remove RSNE, MDE, FTE to allow them to be overridden with 1681 * FT specific values */ 1682 remove_ie(wpa_s->sme.assoc_req_ie, 1683 &wpa_s->sme.assoc_req_ie_len, 1684 WLAN_EID_RSN); 1685 remove_ie(wpa_s->sme.assoc_req_ie, 1686 &wpa_s->sme.assoc_req_ie_len, 1687 WLAN_EID_MOBILITY_DOMAIN); 1688 remove_ie(wpa_s->sme.assoc_req_ie, 1689 &wpa_s->sme.assoc_req_ie_len, 1690 WLAN_EID_FAST_BSS_TRANSITION); 1691 rm_en = get_ie(wpa_s->sme.assoc_req_ie, 1692 wpa_s->sme.assoc_req_ie_len, 1693 WLAN_EID_RRM_ENABLED_CAPABILITIES); 1694 if (rm_en) { 1695 /* Need to remove RM Enabled Capabilities element as 1696 * well temporarily, so that it can be placed between 1697 * RSNE and MDE. */ 1698 rm_en_len = 2 + rm_en[1]; 1699 rm_en_dup = os_memdup(rm_en, rm_en_len); 1700 remove_ie(wpa_s->sme.assoc_req_ie, 1701 &wpa_s->sme.assoc_req_ie_len, 1702 WLAN_EID_RRM_ENABLED_CAPABILITIES); 1703 } 1704 wpa_hexdump(MSG_DEBUG, 1705 "SME: Association Request IEs after FT IE removal", 1706 wpa_s->sme.assoc_req_ie, 1707 wpa_s->sme.assoc_req_ie_len); 1708 if (wpa_s->sme.assoc_req_ie_len + wpa_s->sme.ft_ies_len + 1709 rm_en_len > sizeof(wpa_s->sme.assoc_req_ie)) { 1710 wpa_printf(MSG_ERROR, 1711 "SME: Not enough buffer room for FT IEs in Association Request frame"); 1712 os_free(rm_en_dup); 1713 return; 1714 } 1715 1716 os_memmove(wpa_s->sme.assoc_req_ie + wpa_s->sme.ft_ies_len + 1717 rm_en_len, 1718 wpa_s->sme.assoc_req_ie, 1719 wpa_s->sme.assoc_req_ie_len); 1720 pos = wpa_s->sme.ft_ies; 1721 end = pos + wpa_s->sme.ft_ies_len; 1722 wpos = wpa_s->sme.assoc_req_ie; 1723 if (*pos == WLAN_EID_RSN) { 1724 os_memcpy(wpos, pos, 2 + pos[1]); 1725 wpos += 2 + pos[1]; 1726 pos += 2 + pos[1]; 1727 } 1728 if (rm_en_dup) { 1729 os_memcpy(wpos, rm_en_dup, rm_en_len); 1730 wpos += rm_en_len; 1731 os_free(rm_en_dup); 1732 } 1733 os_memcpy(wpos, pos, end - pos); 1734 wpa_s->sme.assoc_req_ie_len += wpa_s->sme.ft_ies_len + 1735 rm_en_len; 1736 params.wpa_ie = wpa_s->sme.assoc_req_ie; 1737 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len; 1738 wpa_hexdump(MSG_DEBUG, 1739 "SME: Association Request IEs after FT override", 1740 params.wpa_ie, params.wpa_ie_len); 1741 } 1742 #endif /* CONFIG_IEEE80211R */ 1743 params.mode = mode; 1744 params.mgmt_frame_protection = wpa_s->sme.mfp; 1745 params.rrm_used = wpa_s->rrm.rrm_used; 1746 if (wpa_s->sme.prev_bssid_set) 1747 params.prev_bssid = wpa_s->sme.prev_bssid; 1748 1749 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR 1750 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), 1751 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "", 1752 params.freq.freq); 1753 1754 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); 1755 1756 if (params.wpa_ie == NULL || 1757 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0) 1758 < 0) { 1759 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!"); 1760 os_memset(&elems, 0, sizeof(elems)); 1761 } 1762 if (elems.rsn_ie) { 1763 params.wpa_proto = WPA_PROTO_RSN; 1764 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2, 1765 elems.rsn_ie_len + 2); 1766 } else if (elems.wpa_ie) { 1767 params.wpa_proto = WPA_PROTO_WPA; 1768 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2, 1769 elems.wpa_ie_len + 2); 1770 } else if (elems.osen) { 1771 params.wpa_proto = WPA_PROTO_OSEN; 1772 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2, 1773 elems.osen_len + 2); 1774 } else 1775 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 1776 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group) 1777 params.p2p = 1; 1778 1779 if (wpa_s->p2pdev->set_sta_uapsd) 1780 params.uapsd = wpa_s->p2pdev->sta_uapsd; 1781 else 1782 params.uapsd = -1; 1783 1784 if (wpa_drv_associate(wpa_s, ¶ms) < 0) { 1785 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the " 1786 "driver failed"); 1787 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1788 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1789 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1790 return; 1791 } 1792 1793 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s, 1794 NULL); 1795 1796 #ifdef CONFIG_TESTING_OPTIONS 1797 wpabuf_free(wpa_s->last_assoc_req_wpa_ie); 1798 wpa_s->last_assoc_req_wpa_ie = NULL; 1799 if (params.wpa_ie) 1800 wpa_s->last_assoc_req_wpa_ie = 1801 wpabuf_alloc_copy(params.wpa_ie, params.wpa_ie_len); 1802 #endif /* CONFIG_TESTING_OPTIONS */ 1803 } 1804 1805 1806 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md, 1807 const u8 *ies, size_t ies_len) 1808 { 1809 if (md == NULL || ies == NULL) { 1810 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain"); 1811 os_free(wpa_s->sme.ft_ies); 1812 wpa_s->sme.ft_ies = NULL; 1813 wpa_s->sme.ft_ies_len = 0; 1814 wpa_s->sme.ft_used = 0; 1815 return 0; 1816 } 1817 1818 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); 1819 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len); 1820 os_free(wpa_s->sme.ft_ies); 1821 wpa_s->sme.ft_ies = os_memdup(ies, ies_len); 1822 if (wpa_s->sme.ft_ies == NULL) 1823 return -1; 1824 wpa_s->sme.ft_ies_len = ies_len; 1825 return 0; 1826 } 1827 1828 1829 static void sme_deauth(struct wpa_supplicant *wpa_s) 1830 { 1831 int bssid_changed; 1832 1833 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 1834 1835 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, 1836 WLAN_REASON_DEAUTH_LEAVING) < 0) { 1837 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver " 1838 "failed"); 1839 } 1840 wpa_s->sme.prev_bssid_set = 0; 1841 1842 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1843 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1844 os_memset(wpa_s->bssid, 0, ETH_ALEN); 1845 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1846 if (bssid_changed) 1847 wpas_notify_bssid_changed(wpa_s); 1848 } 1849 1850 1851 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s, 1852 union wpa_event_data *data) 1853 { 1854 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: " 1855 "status code %d", MAC2STR(wpa_s->pending_bssid), 1856 data->assoc_reject.status_code); 1857 1858 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); 1859 1860 #ifdef CONFIG_SAE 1861 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid && 1862 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) { 1863 wpa_dbg(wpa_s, MSG_DEBUG, 1864 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication"); 1865 wpa_sm_aborted_cached(wpa_s->wpa); 1866 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid); 1867 if (wpa_s->current_bss) { 1868 struct wpa_bss *bss = wpa_s->current_bss; 1869 struct wpa_ssid *ssid = wpa_s->current_ssid; 1870 1871 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, 1872 WLAN_REASON_DEAUTH_LEAVING); 1873 wpas_connect_work_done(wpa_s); 1874 wpa_supplicant_mark_disassoc(wpa_s); 1875 wpa_supplicant_connect(wpa_s, bss, ssid); 1876 return; 1877 } 1878 } 1879 #endif /* CONFIG_SAE */ 1880 1881 /* 1882 * For now, unconditionally terminate the previous authentication. In 1883 * theory, this should not be needed, but mac80211 gets quite confused 1884 * if the authentication is left pending.. Some roaming cases might 1885 * benefit from using the previous authentication, so this could be 1886 * optimized in the future. 1887 */ 1888 sme_deauth(wpa_s); 1889 } 1890 1891 1892 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s, 1893 union wpa_event_data *data) 1894 { 1895 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out"); 1896 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1897 wpa_supplicant_mark_disassoc(wpa_s); 1898 } 1899 1900 1901 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s, 1902 union wpa_event_data *data) 1903 { 1904 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out"); 1905 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1906 wpa_supplicant_mark_disassoc(wpa_s); 1907 } 1908 1909 1910 void sme_event_disassoc(struct wpa_supplicant *wpa_s, 1911 struct disassoc_info *info) 1912 { 1913 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received"); 1914 if (wpa_s->sme.prev_bssid_set) { 1915 /* 1916 * cfg80211/mac80211 can get into somewhat confused state if 1917 * the AP only disassociates us and leaves us in authenticated 1918 * state. For now, force the state to be cleared to avoid 1919 * confusing errors if we try to associate with the AP again. 1920 */ 1921 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear " 1922 "driver state"); 1923 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid, 1924 WLAN_REASON_DEAUTH_LEAVING); 1925 } 1926 } 1927 1928 1929 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx) 1930 { 1931 struct wpa_supplicant *wpa_s = eloop_ctx; 1932 if (wpa_s->wpa_state == WPA_AUTHENTICATING) { 1933 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout"); 1934 sme_deauth(wpa_s); 1935 } 1936 } 1937 1938 1939 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx) 1940 { 1941 struct wpa_supplicant *wpa_s = eloop_ctx; 1942 if (wpa_s->wpa_state == WPA_ASSOCIATING) { 1943 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout"); 1944 sme_deauth(wpa_s); 1945 } 1946 } 1947 1948 1949 void sme_state_changed(struct wpa_supplicant *wpa_s) 1950 { 1951 /* Make sure timers are cleaned up appropriately. */ 1952 if (wpa_s->wpa_state != WPA_ASSOCIATING) 1953 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); 1954 if (wpa_s->wpa_state != WPA_AUTHENTICATING) 1955 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 1956 } 1957 1958 1959 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s, 1960 const u8 *prev_pending_bssid) 1961 { 1962 /* 1963 * mac80211-workaround to force deauth on failed auth cmd, 1964 * requires us to remain in authenticating state to allow the 1965 * second authentication attempt to be continued properly. 1966 */ 1967 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication " 1968 "to proceed after disconnection event"); 1969 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); 1970 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); 1971 1972 /* 1973 * Re-arm authentication timer in case auth fails for whatever reason. 1974 */ 1975 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 1976 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, 1977 NULL); 1978 } 1979 1980 1981 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s) 1982 { 1983 wpa_s->sme.prev_bssid_set = 0; 1984 #ifdef CONFIG_SAE 1985 wpabuf_free(wpa_s->sme.sae_token); 1986 wpa_s->sme.sae_token = NULL; 1987 sae_clear_data(&wpa_s->sme.sae); 1988 #endif /* CONFIG_SAE */ 1989 #ifdef CONFIG_IEEE80211R 1990 if (wpa_s->sme.ft_ies || wpa_s->sme.ft_used) 1991 sme_update_ft_ies(wpa_s, NULL, NULL, 0); 1992 #endif /* CONFIG_IEEE80211R */ 1993 #ifdef CONFIG_IEEE80211W 1994 sme_stop_sa_query(wpa_s); 1995 #endif /* CONFIG_IEEE80211W */ 1996 } 1997 1998 1999 void sme_deinit(struct wpa_supplicant *wpa_s) 2000 { 2001 sme_clear_on_disassoc(wpa_s); 2002 2003 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); 2004 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 2005 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); 2006 } 2007 2008 2009 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s, 2010 const u8 *chan_list, u8 num_channels, 2011 u8 num_intol) 2012 { 2013 struct ieee80211_2040_bss_coex_ie *bc_ie; 2014 struct ieee80211_2040_intol_chan_report *ic_report; 2015 struct wpabuf *buf; 2016 2017 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR 2018 " (num_channels=%u num_intol=%u)", 2019 MAC2STR(wpa_s->bssid), num_channels, num_intol); 2020 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels", 2021 chan_list, num_channels); 2022 2023 buf = wpabuf_alloc(2 + /* action.category + action_code */ 2024 sizeof(struct ieee80211_2040_bss_coex_ie) + 2025 sizeof(struct ieee80211_2040_intol_chan_report) + 2026 num_channels); 2027 if (buf == NULL) 2028 return; 2029 2030 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC); 2031 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX); 2032 2033 bc_ie = wpabuf_put(buf, sizeof(*bc_ie)); 2034 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE; 2035 bc_ie->length = 1; 2036 if (num_intol) 2037 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ; 2038 2039 if (num_channels > 0) { 2040 ic_report = wpabuf_put(buf, sizeof(*ic_report)); 2041 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT; 2042 ic_report->length = num_channels + 1; 2043 ic_report->op_class = 0; 2044 os_memcpy(wpabuf_put(buf, num_channels), chan_list, 2045 num_channels); 2046 } 2047 2048 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 2049 wpa_s->own_addr, wpa_s->bssid, 2050 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) { 2051 wpa_msg(wpa_s, MSG_INFO, 2052 "SME: Failed to send 20/40 BSS Coexistence frame"); 2053 } 2054 2055 wpabuf_free(buf); 2056 } 2057 2058 2059 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s) 2060 { 2061 struct wpa_bss *bss; 2062 const u8 *ie; 2063 u16 ht_cap; 2064 u8 chan_list[P2P_MAX_CHANNELS], channel; 2065 u8 num_channels = 0, num_intol = 0, i; 2066 2067 if (!wpa_s->sme.sched_obss_scan) 2068 return 0; 2069 2070 wpa_s->sme.sched_obss_scan = 0; 2071 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED) 2072 return 1; 2073 2074 /* 2075 * Check whether AP uses regulatory triplet or channel triplet in 2076 * country info. Right now the operating class of the BSS channel 2077 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12), 2078 * based on the assumption that operating class triplet is not used in 2079 * beacon frame. If the First Channel Number/Operating Extension 2080 * Identifier octet has a positive integer value of 201 or greater, 2081 * then its operating class triplet. 2082 * 2083 * TODO: If Supported Operating Classes element is present in beacon 2084 * frame, have to lookup operating class in Annex E and fill them in 2085 * 2040 coex frame. 2086 */ 2087 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY); 2088 if (ie && (ie[1] >= 6) && (ie[5] >= 201)) 2089 return 1; 2090 2091 os_memset(chan_list, 0, sizeof(chan_list)); 2092 2093 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 2094 /* Skip other band bss */ 2095 enum hostapd_hw_mode mode; 2096 mode = ieee80211_freq_to_chan(bss->freq, &channel); 2097 if (mode != HOSTAPD_MODE_IEEE80211G && 2098 mode != HOSTAPD_MODE_IEEE80211B) 2099 continue; 2100 2101 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP); 2102 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0; 2103 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR 2104 " freq=%u chan=%u ht_cap=0x%x", 2105 MAC2STR(bss->bssid), bss->freq, channel, ht_cap); 2106 2107 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) { 2108 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT) 2109 num_intol++; 2110 2111 /* Check whether the channel is already considered */ 2112 for (i = 0; i < num_channels; i++) { 2113 if (channel == chan_list[i]) 2114 break; 2115 } 2116 if (i != num_channels) 2117 continue; 2118 2119 chan_list[num_channels++] = channel; 2120 } 2121 } 2122 2123 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol); 2124 return 1; 2125 } 2126 2127 2128 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s, 2129 struct wpa_driver_scan_params *params) 2130 { 2131 /* Include only affected channels */ 2132 struct hostapd_hw_modes *mode; 2133 int count, i; 2134 int start, end; 2135 2136 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, 2137 HOSTAPD_MODE_IEEE80211G); 2138 if (mode == NULL) { 2139 /* No channels supported in this band - use empty list */ 2140 params->freqs = os_zalloc(sizeof(int)); 2141 return; 2142 } 2143 2144 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN && 2145 wpa_s->current_bss) { 2146 const u8 *ie; 2147 2148 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION); 2149 if (ie && ie[1] >= 2) { 2150 u8 o; 2151 2152 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK; 2153 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE) 2154 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE; 2155 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW) 2156 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW; 2157 } 2158 } 2159 2160 start = wpa_s->assoc_freq - 10; 2161 end = wpa_s->assoc_freq + 10; 2162 switch (wpa_s->sme.ht_sec_chan) { 2163 case HT_SEC_CHAN_UNKNOWN: 2164 /* HT40+ possible on channels 1..9 */ 2165 if (wpa_s->assoc_freq <= 2452) 2166 start -= 20; 2167 /* HT40- possible on channels 5-13 */ 2168 if (wpa_s->assoc_freq >= 2432) 2169 end += 20; 2170 break; 2171 case HT_SEC_CHAN_ABOVE: 2172 end += 20; 2173 break; 2174 case HT_SEC_CHAN_BELOW: 2175 start -= 20; 2176 break; 2177 } 2178 wpa_printf(MSG_DEBUG, 2179 "OBSS: assoc_freq %d possible affected range %d-%d", 2180 wpa_s->assoc_freq, start, end); 2181 2182 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); 2183 if (params->freqs == NULL) 2184 return; 2185 for (count = 0, i = 0; i < mode->num_channels; i++) { 2186 int freq; 2187 2188 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED) 2189 continue; 2190 freq = mode->channels[i].freq; 2191 if (freq - 10 >= end || freq + 10 <= start) 2192 continue; /* not affected */ 2193 params->freqs[count++] = freq; 2194 } 2195 } 2196 2197 2198 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx) 2199 { 2200 struct wpa_supplicant *wpa_s = eloop_ctx; 2201 struct wpa_driver_scan_params params; 2202 2203 if (!wpa_s->current_bss) { 2204 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request"); 2205 return; 2206 } 2207 2208 os_memset(¶ms, 0, sizeof(params)); 2209 wpa_obss_scan_freqs_list(wpa_s, ¶ms); 2210 params.low_priority = 1; 2211 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan"); 2212 2213 if (wpa_supplicant_trigger_scan(wpa_s, ¶ms)) 2214 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan"); 2215 else 2216 wpa_s->sme.sched_obss_scan = 1; 2217 os_free(params.freqs); 2218 2219 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, 2220 sme_obss_scan_timeout, wpa_s, NULL); 2221 } 2222 2223 2224 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable) 2225 { 2226 const u8 *ie; 2227 struct wpa_bss *bss = wpa_s->current_bss; 2228 struct wpa_ssid *ssid = wpa_s->current_ssid; 2229 struct hostapd_hw_modes *hw_mode = NULL; 2230 int i; 2231 2232 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); 2233 wpa_s->sme.sched_obss_scan = 0; 2234 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN; 2235 if (!enable) 2236 return; 2237 2238 /* 2239 * Schedule OBSS scan if driver is using station SME in wpa_supplicant 2240 * or it expects OBSS scan to be performed by wpa_supplicant. 2241 */ 2242 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) || 2243 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) || 2244 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA) 2245 return; 2246 2247 if (!wpa_s->hw.modes) 2248 return; 2249 2250 /* only HT caps in 11g mode are relevant */ 2251 for (i = 0; i < wpa_s->hw.num_modes; i++) { 2252 hw_mode = &wpa_s->hw.modes[i]; 2253 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G) 2254 break; 2255 } 2256 2257 /* Driver does not support HT40 for 11g or doesn't have 11g. */ 2258 if (i == wpa_s->hw.num_modes || !hw_mode || 2259 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 2260 return; 2261 2262 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500) 2263 return; /* Not associated on 2.4 GHz band */ 2264 2265 /* Check whether AP supports HT40 */ 2266 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP); 2267 if (!ie || ie[1] < 2 || 2268 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 2269 return; /* AP does not support HT40 */ 2270 2271 ie = wpa_bss_get_ie(wpa_s->current_bss, 2272 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS); 2273 if (!ie || ie[1] < 14) 2274 return; /* AP does not request OBSS scans */ 2275 2276 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6); 2277 if (wpa_s->sme.obss_scan_int < 10) { 2278 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u " 2279 "replaced with the minimum 10 sec", 2280 wpa_s->sme.obss_scan_int); 2281 wpa_s->sme.obss_scan_int = 10; 2282 } 2283 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec", 2284 wpa_s->sme.obss_scan_int); 2285 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, 2286 sme_obss_scan_timeout, wpa_s, NULL); 2287 } 2288 2289 2290 #ifdef CONFIG_IEEE80211W 2291 2292 static const unsigned int sa_query_max_timeout = 1000; 2293 static const unsigned int sa_query_retry_timeout = 201; 2294 static const unsigned int sa_query_ch_switch_max_delay = 5000; /* in usec */ 2295 2296 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s) 2297 { 2298 u32 tu; 2299 struct os_reltime now, passed; 2300 os_get_reltime(&now); 2301 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed); 2302 tu = (passed.sec * 1000000 + passed.usec) / 1024; 2303 if (sa_query_max_timeout < tu) { 2304 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out"); 2305 sme_stop_sa_query(wpa_s); 2306 wpa_supplicant_deauthenticate( 2307 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID); 2308 return 1; 2309 } 2310 2311 return 0; 2312 } 2313 2314 2315 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s, 2316 const u8 *trans_id) 2317 { 2318 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN]; 2319 u8 req_len = 2 + WLAN_SA_QUERY_TR_ID_LEN; 2320 2321 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to " 2322 MACSTR, MAC2STR(wpa_s->bssid)); 2323 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID", 2324 trans_id, WLAN_SA_QUERY_TR_ID_LEN); 2325 req[0] = WLAN_ACTION_SA_QUERY; 2326 req[1] = WLAN_SA_QUERY_REQUEST; 2327 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN); 2328 2329 #ifdef CONFIG_OCV 2330 if (wpa_sm_ocv_enabled(wpa_s->wpa)) { 2331 struct wpa_channel_info ci; 2332 2333 if (wpa_drv_channel_info(wpa_s, &ci) != 0) { 2334 wpa_printf(MSG_WARNING, 2335 "Failed to get channel info for OCI element in SA Query Request frame"); 2336 return; 2337 } 2338 2339 if (ocv_insert_extended_oci(&ci, req + req_len) < 0) 2340 return; 2341 2342 req_len += OCV_OCI_EXTENDED_LEN; 2343 } 2344 #endif /* CONFIG_OCV */ 2345 2346 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 2347 wpa_s->own_addr, wpa_s->bssid, 2348 req, req_len, 0) < 0) 2349 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query " 2350 "Request"); 2351 } 2352 2353 2354 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx) 2355 { 2356 struct wpa_supplicant *wpa_s = eloop_ctx; 2357 unsigned int timeout, sec, usec; 2358 u8 *trans_id, *nbuf; 2359 2360 if (wpa_s->sme.sa_query_count > 0 && 2361 sme_check_sa_query_timeout(wpa_s)) 2362 return; 2363 2364 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id, 2365 wpa_s->sme.sa_query_count + 1, 2366 WLAN_SA_QUERY_TR_ID_LEN); 2367 if (nbuf == NULL) { 2368 sme_stop_sa_query(wpa_s); 2369 return; 2370 } 2371 if (wpa_s->sme.sa_query_count == 0) { 2372 /* Starting a new SA Query procedure */ 2373 os_get_reltime(&wpa_s->sme.sa_query_start); 2374 } 2375 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; 2376 wpa_s->sme.sa_query_trans_id = nbuf; 2377 wpa_s->sme.sa_query_count++; 2378 2379 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) { 2380 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID"); 2381 sme_stop_sa_query(wpa_s); 2382 return; 2383 } 2384 2385 timeout = sa_query_retry_timeout; 2386 sec = ((timeout / 1000) * 1024) / 1000; 2387 usec = (timeout % 1000) * 1024; 2388 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL); 2389 2390 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d", 2391 wpa_s->sme.sa_query_count); 2392 2393 sme_send_sa_query_req(wpa_s, trans_id); 2394 } 2395 2396 2397 static void sme_start_sa_query(struct wpa_supplicant *wpa_s) 2398 { 2399 sme_sa_query_timer(wpa_s, NULL); 2400 } 2401 2402 2403 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s) 2404 { 2405 if (wpa_s->sme.sa_query_trans_id) 2406 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Stop SA Query"); 2407 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL); 2408 os_free(wpa_s->sme.sa_query_trans_id); 2409 wpa_s->sme.sa_query_trans_id = NULL; 2410 wpa_s->sme.sa_query_count = 0; 2411 } 2412 2413 2414 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa, 2415 const u8 *da, u16 reason_code) 2416 { 2417 struct wpa_ssid *ssid; 2418 struct os_reltime now; 2419 2420 if (wpa_s->wpa_state != WPA_COMPLETED) 2421 return; 2422 ssid = wpa_s->current_ssid; 2423 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION) 2424 return; 2425 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) 2426 return; 2427 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA && 2428 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA) 2429 return; 2430 if (wpa_s->sme.sa_query_count > 0) 2431 return; 2432 2433 os_get_reltime(&now); 2434 if (wpa_s->sme.last_unprot_disconnect.sec && 2435 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10)) 2436 return; /* limit SA Query procedure frequency */ 2437 wpa_s->sme.last_unprot_disconnect = now; 2438 2439 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - " 2440 "possible AP/STA state mismatch - trigger SA Query"); 2441 sme_start_sa_query(wpa_s); 2442 } 2443 2444 2445 void sme_event_ch_switch(struct wpa_supplicant *wpa_s) 2446 { 2447 unsigned int usec; 2448 u32 _rand; 2449 2450 if (wpa_s->wpa_state != WPA_COMPLETED || 2451 !wpa_sm_ocv_enabled(wpa_s->wpa)) 2452 return; 2453 2454 wpa_dbg(wpa_s, MSG_DEBUG, 2455 "SME: Channel switch completed - trigger new SA Query to verify new operating channel"); 2456 sme_stop_sa_query(wpa_s); 2457 2458 if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0) 2459 _rand = os_random(); 2460 usec = _rand % (sa_query_ch_switch_max_delay + 1); 2461 eloop_register_timeout(0, usec, sme_sa_query_timer, wpa_s, NULL); 2462 } 2463 2464 2465 static void sme_process_sa_query_request(struct wpa_supplicant *wpa_s, 2466 const u8 *sa, const u8 *data, 2467 size_t len) 2468 { 2469 u8 resp[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN]; 2470 u8 resp_len = 2 + WLAN_SA_QUERY_TR_ID_LEN; 2471 2472 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Response to " 2473 MACSTR, MAC2STR(wpa_s->bssid)); 2474 2475 resp[0] = WLAN_ACTION_SA_QUERY; 2476 resp[1] = WLAN_SA_QUERY_RESPONSE; 2477 os_memcpy(resp + 2, data + 1, WLAN_SA_QUERY_TR_ID_LEN); 2478 2479 #ifdef CONFIG_OCV 2480 if (wpa_sm_ocv_enabled(wpa_s->wpa)) { 2481 struct wpa_channel_info ci; 2482 2483 if (wpa_drv_channel_info(wpa_s, &ci) != 0) { 2484 wpa_printf(MSG_WARNING, 2485 "Failed to get channel info for OCI element in SA Query Response frame"); 2486 return; 2487 } 2488 2489 if (ocv_insert_extended_oci(&ci, resp + resp_len) < 0) 2490 return; 2491 2492 resp_len += OCV_OCI_EXTENDED_LEN; 2493 } 2494 #endif /* CONFIG_OCV */ 2495 2496 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 2497 wpa_s->own_addr, wpa_s->bssid, 2498 resp, resp_len, 0) < 0) 2499 wpa_msg(wpa_s, MSG_INFO, 2500 "SME: Failed to send SA Query Response"); 2501 } 2502 2503 2504 static void sme_process_sa_query_response(struct wpa_supplicant *wpa_s, 2505 const u8 *sa, const u8 *data, 2506 size_t len) 2507 { 2508 int i; 2509 2510 if (!wpa_s->sme.sa_query_trans_id) 2511 return; 2512 2513 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from " 2514 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); 2515 2516 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) 2517 return; 2518 2519 for (i = 0; i < wpa_s->sme.sa_query_count; i++) { 2520 if (os_memcmp(wpa_s->sme.sa_query_trans_id + 2521 i * WLAN_SA_QUERY_TR_ID_LEN, 2522 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0) 2523 break; 2524 } 2525 2526 if (i >= wpa_s->sme.sa_query_count) { 2527 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query " 2528 "transaction identifier found"); 2529 return; 2530 } 2531 2532 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received " 2533 "from " MACSTR, MAC2STR(sa)); 2534 sme_stop_sa_query(wpa_s); 2535 } 2536 2537 2538 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa, 2539 const u8 *data, size_t len) 2540 { 2541 if (len < 1 + WLAN_SA_QUERY_TR_ID_LEN) 2542 return; 2543 2544 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query frame from " 2545 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); 2546 2547 #ifdef CONFIG_OCV 2548 if (wpa_sm_ocv_enabled(wpa_s->wpa)) { 2549 struct ieee802_11_elems elems; 2550 struct wpa_channel_info ci; 2551 2552 if (ieee802_11_parse_elems(data + 1 + WLAN_SA_QUERY_TR_ID_LEN, 2553 len - 1 - WLAN_SA_QUERY_TR_ID_LEN, 2554 &elems, 1) == ParseFailed) { 2555 wpa_printf(MSG_DEBUG, 2556 "SA Query: Failed to parse elements"); 2557 return; 2558 } 2559 2560 if (wpa_drv_channel_info(wpa_s, &ci) != 0) { 2561 wpa_printf(MSG_WARNING, 2562 "Failed to get channel info to validate received OCI in SA Query Action frame"); 2563 return; 2564 } 2565 2566 if (ocv_verify_tx_params(elems.oci, elems.oci_len, &ci, 2567 channel_width_to_int(ci.chanwidth), 2568 ci.seg1_idx) != 0) { 2569 wpa_printf(MSG_WARNING, "%s", ocv_errorstr); 2570 return; 2571 } 2572 } 2573 #endif /* CONFIG_OCV */ 2574 2575 if (data[0] == WLAN_SA_QUERY_REQUEST) 2576 sme_process_sa_query_request(wpa_s, sa, data, len); 2577 else if (data[0] == WLAN_SA_QUERY_RESPONSE) 2578 sme_process_sa_query_response(wpa_s, sa, data, len); 2579 } 2580 2581 #endif /* CONFIG_IEEE80211W */ 2582
