1 /* 2 * wpa_supplicant / WPS integration 3 * Copyright (c) 2008-2014, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "eloop.h" 13 #include "uuid.h" 14 #include "crypto/random.h" 15 #include "crypto/dh_group5.h" 16 #include "common/ieee802_11_defs.h" 17 #include "common/ieee802_11_common.h" 18 #include "common/wpa_common.h" 19 #include "common/wpa_ctrl.h" 20 #include "eap_common/eap_wsc_common.h" 21 #include "eap_peer/eap.h" 22 #include "eapol_supp/eapol_supp_sm.h" 23 #include "rsn_supp/wpa.h" 24 #include "wps/wps_attr_parse.h" 25 #include "config.h" 26 #include "wpa_supplicant_i.h" 27 #include "driver_i.h" 28 #include "notify.h" 29 #include "blacklist.h" 30 #include "bss.h" 31 #include "scan.h" 32 #include "ap.h" 33 #include "p2p/p2p.h" 34 #include "p2p_supplicant.h" 35 #include "wps_supplicant.h" 36 37 38 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG 39 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3 40 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */ 41 42 /* 43 * The minimum time in seconds before trying to associate to a WPS PIN AP that 44 * does not have Selected Registrar TRUE. 45 */ 46 #ifndef WPS_PIN_TIME_IGNORE_SEL_REG 47 #define WPS_PIN_TIME_IGNORE_SEL_REG 5 48 #endif /* WPS_PIN_TIME_IGNORE_SEL_REG */ 49 50 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx); 51 static void wpas_clear_wps(struct wpa_supplicant *wpa_s); 52 53 54 static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s) 55 { 56 os_free(wpa_s->wps_ap); 57 wpa_s->wps_ap = NULL; 58 wpa_s->num_wps_ap = 0; 59 wpa_s->wps_ap_iter = 0; 60 } 61 62 63 static void wpas_wps_assoc_with_cred(void *eloop_ctx, void *timeout_ctx) 64 { 65 struct wpa_supplicant *wpa_s = eloop_ctx; 66 int use_fast_assoc = timeout_ctx != NULL; 67 68 wpa_printf(MSG_DEBUG, "WPS: Continuing association after eapol_cb"); 69 if (!use_fast_assoc || 70 wpa_supplicant_fast_associate(wpa_s) != 1) 71 wpa_supplicant_req_scan(wpa_s, 0, 0); 72 } 73 74 75 static void wpas_wps_assoc_with_cred_cancel(struct wpa_supplicant *wpa_s) 76 { 77 eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 0); 78 eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 1); 79 } 80 81 82 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s) 83 { 84 if (wpas_p2p_wps_eapol_cb(wpa_s) > 0) 85 return 1; 86 87 if (!wpa_s->wps_success && 88 wpa_s->current_ssid && 89 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) { 90 const u8 *bssid = wpa_s->bssid; 91 if (is_zero_ether_addr(bssid)) 92 bssid = wpa_s->pending_bssid; 93 94 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR 95 " did not succeed - continue trying to find " 96 "suitable AP", MAC2STR(bssid)); 97 wpa_blacklist_add(wpa_s, bssid); 98 99 wpa_supplicant_deauthenticate(wpa_s, 100 WLAN_REASON_DEAUTH_LEAVING); 101 wpa_s->reassociate = 1; 102 wpa_supplicant_req_scan(wpa_s, 103 wpa_s->blacklist_cleared ? 5 : 0, 0); 104 wpa_s->blacklist_cleared = 0; 105 return 1; 106 } 107 108 wpas_wps_clear_ap_info(wpa_s); 109 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 110 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success) 111 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL); 112 113 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid && 114 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 115 int disabled = wpa_s->current_ssid->disabled; 116 unsigned int freq = wpa_s->assoc_freq; 117 struct wpa_bss *bss; 118 struct wpa_ssid *ssid = NULL; 119 int use_fast_assoc = 0; 120 121 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - " 122 "try to associate with the received credential " 123 "(freq=%u)", freq); 124 wpa_s->own_disconnect_req = 1; 125 wpa_supplicant_deauthenticate(wpa_s, 126 WLAN_REASON_DEAUTH_LEAVING); 127 if (disabled) { 128 wpa_printf(MSG_DEBUG, "WPS: Current network is " 129 "disabled - wait for user to enable"); 130 return 1; 131 } 132 wpa_s->after_wps = 5; 133 wpa_s->wps_freq = freq; 134 wpa_s->normal_scans = 0; 135 wpa_s->reassociate = 1; 136 137 wpa_printf(MSG_DEBUG, "WPS: Checking whether fast association " 138 "without a new scan can be used"); 139 bss = wpa_supplicant_pick_network(wpa_s, &ssid); 140 if (bss) { 141 struct wpabuf *wps; 142 struct wps_parse_attr attr; 143 144 wps = wpa_bss_get_vendor_ie_multi(bss, 145 WPS_IE_VENDOR_TYPE); 146 if (wps && wps_parse_msg(wps, &attr) == 0 && 147 attr.wps_state && 148 *attr.wps_state == WPS_STATE_CONFIGURED) 149 use_fast_assoc = 1; 150 wpabuf_free(wps); 151 } 152 153 /* 154 * Complete the next step from an eloop timeout to allow pending 155 * driver events related to the disconnection to be processed 156 * first. This makes it less likely for disconnection event to 157 * cause problems with the following connection. 158 */ 159 wpa_printf(MSG_DEBUG, "WPS: Continue association from timeout"); 160 wpas_wps_assoc_with_cred_cancel(wpa_s); 161 eloop_register_timeout(0, 10000, 162 wpas_wps_assoc_with_cred, wpa_s, 163 use_fast_assoc ? (void *) 1 : 164 (void *) 0); 165 return 1; 166 } 167 168 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) { 169 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting " 170 "for external credential processing"); 171 wpas_clear_wps(wpa_s); 172 wpa_s->own_disconnect_req = 1; 173 wpa_supplicant_deauthenticate(wpa_s, 174 WLAN_REASON_DEAUTH_LEAVING); 175 return 1; 176 } 177 178 return 0; 179 } 180 181 182 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s, 183 struct wpa_ssid *ssid, 184 const struct wps_credential *cred) 185 { 186 struct wpa_driver_capa capa; 187 struct wpa_bss *bss; 188 const u8 *ie; 189 struct wpa_ie_data adv; 190 int wpa2 = 0, ccmp = 0; 191 192 /* 193 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in 194 * case they are configured for mixed mode operation (WPA+WPA2 and 195 * TKIP+CCMP). Try to use scan results to figure out whether the AP 196 * actually supports stronger security and select that if the client 197 * has support for it, too. 198 */ 199 200 if (wpa_drv_get_capa(wpa_s, &capa)) 201 return; /* Unknown what driver supports */ 202 203 if (ssid->ssid == NULL) 204 return; 205 bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len); 206 if (!bss) 207 bss = wpa_bss_get(wpa_s, wpa_s->bssid, 208 ssid->ssid, ssid->ssid_len); 209 if (bss == NULL) { 210 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS " 211 "table - use credential as-is"); 212 return; 213 } 214 215 wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table"); 216 217 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 218 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) { 219 wpa2 = 1; 220 if (adv.pairwise_cipher & WPA_CIPHER_CCMP) 221 ccmp = 1; 222 } else { 223 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 224 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 && 225 adv.pairwise_cipher & WPA_CIPHER_CCMP) 226 ccmp = 1; 227 } 228 229 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) && 230 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) { 231 /* 232 * TODO: This could be the initial AP configuration and the 233 * Beacon contents could change shortly. Should request a new 234 * scan and delay addition of the network until the updated 235 * scan results are available. 236 */ 237 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA " 238 "support - use credential as-is"); 239 return; 240 } 241 242 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) && 243 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) && 244 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) { 245 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential " 246 "based on scan results"); 247 if (wpa_s->conf->ap_scan == 1) 248 ssid->pairwise_cipher |= WPA_CIPHER_CCMP; 249 else 250 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 251 } 252 253 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) && 254 (ssid->proto & WPA_PROTO_WPA) && 255 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) { 256 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential " 257 "based on scan results"); 258 if (wpa_s->conf->ap_scan == 1) 259 ssid->proto |= WPA_PROTO_RSN; 260 else 261 ssid->proto = WPA_PROTO_RSN; 262 } 263 } 264 265 266 static void wpas_wps_remove_dup_network(struct wpa_supplicant *wpa_s, 267 struct wpa_ssid *new_ssid) 268 { 269 struct wpa_ssid *ssid, *next; 270 271 for (ssid = wpa_s->conf->ssid, next = ssid ? ssid->next : NULL; ssid; 272 ssid = next, next = ssid ? ssid->next : NULL) { 273 /* 274 * new_ssid has already been added to the list in 275 * wpas_wps_add_network(), so skip it. 276 */ 277 if (ssid == new_ssid) 278 continue; 279 280 if (ssid->bssid_set || new_ssid->bssid_set) { 281 if (ssid->bssid_set != new_ssid->bssid_set) 282 continue; 283 if (os_memcmp(ssid->bssid, new_ssid->bssid, ETH_ALEN) != 284 0) 285 continue; 286 } 287 288 /* compare SSID */ 289 if (ssid->ssid_len == 0 || ssid->ssid_len != new_ssid->ssid_len) 290 continue; 291 292 if (ssid->ssid && new_ssid->ssid) { 293 if (os_memcmp(ssid->ssid, new_ssid->ssid, 294 ssid->ssid_len) != 0) 295 continue; 296 } else if (ssid->ssid || new_ssid->ssid) 297 continue; 298 299 /* compare security parameters */ 300 if (ssid->auth_alg != new_ssid->auth_alg || 301 ssid->key_mgmt != new_ssid->key_mgmt || 302 (ssid->group_cipher != new_ssid->group_cipher && 303 !(ssid->group_cipher & new_ssid->group_cipher & 304 WPA_CIPHER_CCMP))) 305 continue; 306 307 /* 308 * Some existing WPS APs will send two creds in case they are 309 * configured for mixed mode operation (WPA+WPA2 and TKIP+CCMP). 310 * Try to merge these two creds if they are received in the same 311 * M8 message. 312 */ 313 if (ssid->wps_run && ssid->wps_run == new_ssid->wps_run && 314 wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) { 315 if (new_ssid->passphrase && ssid->passphrase && 316 os_strcmp(new_ssid->passphrase, ssid->passphrase) != 317 0) { 318 wpa_printf(MSG_DEBUG, 319 "WPS: M8 Creds with different passphrase - do not merge"); 320 continue; 321 } 322 323 if (new_ssid->psk_set && 324 (!ssid->psk_set || 325 os_memcmp(new_ssid->psk, ssid->psk, 32) != 0)) { 326 wpa_printf(MSG_DEBUG, 327 "WPS: M8 Creds with different PSK - do not merge"); 328 continue; 329 } 330 331 if ((new_ssid->passphrase && !ssid->passphrase) || 332 (!new_ssid->passphrase && ssid->passphrase)) { 333 wpa_printf(MSG_DEBUG, 334 "WPS: M8 Creds with different passphrase/PSK type - do not merge"); 335 continue; 336 } 337 338 wpa_printf(MSG_DEBUG, 339 "WPS: Workaround - merge likely WPA/WPA2-mixed mode creds in same M8 message"); 340 new_ssid->proto |= ssid->proto; 341 new_ssid->pairwise_cipher |= ssid->pairwise_cipher; 342 } else { 343 /* 344 * proto and pairwise_cipher difference matter for 345 * non-mixed-mode creds. 346 */ 347 if (ssid->proto != new_ssid->proto || 348 ssid->pairwise_cipher != new_ssid->pairwise_cipher) 349 continue; 350 } 351 352 /* Remove the duplicated older network entry. */ 353 wpa_printf(MSG_DEBUG, "Remove duplicate network %d", ssid->id); 354 wpas_notify_network_removed(wpa_s, ssid); 355 if (wpa_s->current_ssid == ssid) 356 wpa_s->current_ssid = NULL; 357 wpa_config_remove_network(wpa_s->conf, ssid->id); 358 } 359 } 360 361 362 static int wpa_supplicant_wps_cred(void *ctx, 363 const struct wps_credential *cred) 364 { 365 struct wpa_supplicant *wpa_s = ctx; 366 struct wpa_ssid *ssid = wpa_s->current_ssid; 367 u16 auth_type; 368 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 369 int registrar = 0; 370 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 371 372 if ((wpa_s->conf->wps_cred_processing == 1 || 373 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) { 374 size_t blen = cred->cred_attr_len * 2 + 1; 375 char *buf = os_malloc(blen); 376 if (buf) { 377 wpa_snprintf_hex(buf, blen, 378 cred->cred_attr, cred->cred_attr_len); 379 wpa_msg(wpa_s, MSG_INFO, "%s%s", 380 WPS_EVENT_CRED_RECEIVED, buf); 381 os_free(buf); 382 } 383 384 wpas_notify_wps_credential(wpa_s, cred); 385 } else 386 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED); 387 388 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", 389 cred->cred_attr, cred->cred_attr_len); 390 391 if (wpa_s->conf->wps_cred_processing == 1) 392 return 0; 393 394 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); 395 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", 396 cred->auth_type); 397 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); 398 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); 399 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", 400 cred->key, cred->key_len); 401 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, 402 MAC2STR(cred->mac_addr)); 403 404 auth_type = cred->auth_type; 405 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { 406 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode " 407 "auth_type into WPA2PSK"); 408 auth_type = WPS_AUTH_WPA2PSK; 409 } 410 411 if (auth_type != WPS_AUTH_OPEN && 412 auth_type != WPS_AUTH_WPAPSK && 413 auth_type != WPS_AUTH_WPA2PSK) { 414 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for " 415 "unsupported authentication type 0x%x", 416 auth_type); 417 return 0; 418 } 419 420 if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) { 421 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) { 422 wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with " 423 "invalid Network Key length %lu", 424 (unsigned long) cred->key_len); 425 return -1; 426 } 427 } 428 429 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 430 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based " 431 "on the received credential"); 432 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 433 if (ssid->eap.identity && 434 ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN && 435 os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR, 436 WSC_ID_REGISTRAR_LEN) == 0) 437 registrar = 1; 438 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 439 os_free(ssid->eap.identity); 440 ssid->eap.identity = NULL; 441 ssid->eap.identity_len = 0; 442 os_free(ssid->eap.phase1); 443 ssid->eap.phase1 = NULL; 444 os_free(ssid->eap.eap_methods); 445 ssid->eap.eap_methods = NULL; 446 if (!ssid->p2p_group) { 447 ssid->temporary = 0; 448 ssid->bssid_set = 0; 449 } 450 ssid->disabled_until.sec = 0; 451 ssid->disabled_until.usec = 0; 452 ssid->auth_failures = 0; 453 } else { 454 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the " 455 "received credential"); 456 ssid = wpa_config_add_network(wpa_s->conf); 457 if (ssid == NULL) 458 return -1; 459 if (wpa_s->current_ssid) { 460 /* 461 * Should the GO issue multiple credentials for some 462 * reason, each credential should be marked as a 463 * temporary P2P group similarly to the one that gets 464 * marked as such based on the pre-configured values 465 * used for the WPS network block. 466 */ 467 ssid->p2p_group = wpa_s->current_ssid->p2p_group; 468 ssid->temporary = wpa_s->current_ssid->temporary; 469 } 470 wpas_notify_network_added(wpa_s, ssid); 471 } 472 473 wpa_config_set_network_defaults(ssid); 474 ssid->wps_run = wpa_s->wps_run; 475 476 os_free(ssid->ssid); 477 ssid->ssid = os_malloc(cred->ssid_len); 478 if (ssid->ssid) { 479 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len); 480 ssid->ssid_len = cred->ssid_len; 481 } 482 483 switch (cred->encr_type) { 484 case WPS_ENCR_NONE: 485 break; 486 case WPS_ENCR_TKIP: 487 ssid->pairwise_cipher = WPA_CIPHER_TKIP; 488 break; 489 case WPS_ENCR_AES: 490 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 491 if (wpa_s->drv_capa_known && 492 (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_GCMP)) { 493 ssid->pairwise_cipher |= WPA_CIPHER_GCMP; 494 ssid->group_cipher |= WPA_CIPHER_GCMP; 495 } 496 if (wpa_s->drv_capa_known && 497 (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_GCMP_256)) { 498 ssid->pairwise_cipher |= WPA_CIPHER_GCMP_256; 499 ssid->group_cipher |= WPA_CIPHER_GCMP_256; 500 } 501 if (wpa_s->drv_capa_known && 502 (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_CCMP_256)) { 503 ssid->pairwise_cipher |= WPA_CIPHER_CCMP_256; 504 ssid->group_cipher |= WPA_CIPHER_CCMP_256; 505 } 506 break; 507 } 508 509 switch (auth_type) { 510 case WPS_AUTH_OPEN: 511 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 512 ssid->key_mgmt = WPA_KEY_MGMT_NONE; 513 ssid->proto = 0; 514 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 515 if (registrar) { 516 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK 517 "id=%d - Credentials for an open " 518 "network disabled by default - use " 519 "'select_network %d' to enable", 520 ssid->id, ssid->id); 521 ssid->disabled = 1; 522 } 523 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 524 break; 525 case WPS_AUTH_WPAPSK: 526 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 527 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 528 ssid->proto = WPA_PROTO_WPA; 529 break; 530 case WPS_AUTH_WPA2PSK: 531 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 532 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 533 ssid->proto = WPA_PROTO_RSN; 534 break; 535 } 536 537 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) { 538 if (cred->key_len == 2 * PMK_LEN) { 539 if (hexstr2bin((const char *) cred->key, ssid->psk, 540 PMK_LEN)) { 541 wpa_printf(MSG_ERROR, "WPS: Invalid Network " 542 "Key"); 543 return -1; 544 } 545 ssid->psk_set = 1; 546 ssid->export_keys = 1; 547 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) { 548 os_free(ssid->passphrase); 549 ssid->passphrase = os_malloc(cred->key_len + 1); 550 if (ssid->passphrase == NULL) 551 return -1; 552 os_memcpy(ssid->passphrase, cred->key, cred->key_len); 553 ssid->passphrase[cred->key_len] = '\0'; 554 wpa_config_update_psk(ssid); 555 ssid->export_keys = 1; 556 } else { 557 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key " 558 "length %lu", 559 (unsigned long) cred->key_len); 560 return -1; 561 } 562 } 563 ssid->priority = wpa_s->conf->wps_priority; 564 565 wpas_wps_security_workaround(wpa_s, ssid, cred); 566 567 wpas_wps_remove_dup_network(wpa_s, ssid); 568 569 #ifndef CONFIG_NO_CONFIG_WRITE 570 if (wpa_s->conf->update_config && 571 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 572 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration"); 573 return -1; 574 } 575 #endif /* CONFIG_NO_CONFIG_WRITE */ 576 577 if (ssid->priority) 578 wpa_config_update_prio_list(wpa_s->conf); 579 580 /* 581 * Optimize the post-WPS scan based on the channel used during 582 * the provisioning in case EAP-Failure is not received. 583 */ 584 wpa_s->after_wps = 5; 585 wpa_s->wps_freq = wpa_s->assoc_freq; 586 587 return 0; 588 } 589 590 591 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s, 592 struct wps_event_m2d *m2d) 593 { 594 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D 595 "dev_password_id=%d config_error=%d", 596 m2d->dev_password_id, m2d->config_error); 597 wpas_notify_wps_event_m2d(wpa_s, m2d); 598 #ifdef CONFIG_P2P 599 if (wpa_s->p2pdev && wpa_s->p2pdev != wpa_s) { 600 wpa_msg(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_M2D 601 "dev_password_id=%d config_error=%d", 602 m2d->dev_password_id, m2d->config_error); 603 } 604 if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) { 605 /* 606 * Notify P2P from eloop timeout to avoid issues with the 607 * interface getting removed while processing a message. 608 */ 609 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb, wpa_s, 610 NULL); 611 } 612 #endif /* CONFIG_P2P */ 613 } 614 615 616 static void wpas_wps_clear_timeout(void *eloop_ctx, void *timeout_ctx) 617 { 618 struct wpa_supplicant *wpa_s = eloop_ctx; 619 wpa_printf(MSG_DEBUG, "WPS: Clear WPS network from timeout"); 620 wpas_clear_wps(wpa_s); 621 } 622 623 624 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s, 625 struct wps_event_fail *fail) 626 { 627 if (fail->error_indication > 0 && 628 fail->error_indication < NUM_WPS_EI_VALUES) { 629 wpa_msg(wpa_s, MSG_INFO, 630 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 631 fail->msg, fail->config_error, fail->error_indication, 632 wps_ei_str(fail->error_indication)); 633 if (wpa_s->p2pdev && wpa_s->p2pdev != wpa_s) 634 wpa_msg(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_FAIL 635 "msg=%d config_error=%d reason=%d (%s)", 636 fail->msg, fail->config_error, 637 fail->error_indication, 638 wps_ei_str(fail->error_indication)); 639 } else { 640 wpa_msg(wpa_s, MSG_INFO, 641 WPS_EVENT_FAIL "msg=%d config_error=%d", 642 fail->msg, fail->config_error); 643 if (wpa_s->p2pdev && wpa_s->p2pdev != wpa_s) 644 wpa_msg(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_FAIL 645 "msg=%d config_error=%d", 646 fail->msg, fail->config_error); 647 } 648 649 /* 650 * Need to allow WPS processing to complete, e.g., by sending WSC_NACK. 651 */ 652 wpa_printf(MSG_DEBUG, "WPS: Register timeout to clear WPS network"); 653 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL); 654 eloop_register_timeout(0, 100000, wpas_wps_clear_timeout, wpa_s, NULL); 655 656 wpas_notify_wps_event_fail(wpa_s, fail); 657 wpas_p2p_wps_failed(wpa_s, fail); 658 } 659 660 661 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx); 662 663 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s) 664 { 665 struct wpa_ssid *ssid; 666 int changed = 0; 667 668 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL); 669 670 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 671 if (ssid->disabled_for_connect && ssid->disabled) { 672 ssid->disabled_for_connect = 0; 673 ssid->disabled = 0; 674 wpas_notify_network_enabled_changed(wpa_s, ssid); 675 changed++; 676 } 677 } 678 679 if (changed) { 680 #ifndef CONFIG_NO_CONFIG_WRITE 681 if (wpa_s->conf->update_config && 682 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 683 wpa_printf(MSG_DEBUG, "WPS: Failed to update " 684 "configuration"); 685 } 686 #endif /* CONFIG_NO_CONFIG_WRITE */ 687 } 688 } 689 690 691 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx) 692 { 693 struct wpa_supplicant *wpa_s = eloop_ctx; 694 /* Enable the networks disabled during wpas_wps_reassoc */ 695 wpas_wps_reenable_networks(wpa_s); 696 } 697 698 699 int wpas_wps_reenable_networks_pending(struct wpa_supplicant *wpa_s) 700 { 701 return eloop_is_timeout_registered(wpas_wps_reenable_networks_cb, 702 wpa_s, NULL); 703 } 704 705 706 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s) 707 { 708 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS); 709 wpa_s->wps_success = 1; 710 wpas_notify_wps_event_success(wpa_s); 711 if (wpa_s->current_ssid) 712 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1); 713 wpa_s->extra_blacklist_count = 0; 714 715 /* 716 * Enable the networks disabled during wpas_wps_reassoc after 10 717 * seconds. The 10 seconds timer is to allow the data connection to be 718 * formed before allowing other networks to be selected. 719 */ 720 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s, 721 NULL); 722 723 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0); 724 } 725 726 727 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s, 728 struct wps_event_er_ap *ap) 729 { 730 char uuid_str[100]; 731 char dev_type[WPS_DEV_TYPE_BUFSIZE]; 732 733 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); 734 if (ap->pri_dev_type) 735 wps_dev_type_bin2str(ap->pri_dev_type, dev_type, 736 sizeof(dev_type)); 737 else 738 dev_type[0] = '\0'; 739 740 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR 741 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|", 742 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state, 743 ap->friendly_name ? ap->friendly_name : "", 744 ap->manufacturer ? ap->manufacturer : "", 745 ap->model_description ? ap->model_description : "", 746 ap->model_name ? ap->model_name : "", 747 ap->manufacturer_url ? ap->manufacturer_url : "", 748 ap->model_url ? ap->model_url : ""); 749 } 750 751 752 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s, 753 struct wps_event_er_ap *ap) 754 { 755 char uuid_str[100]; 756 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); 757 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str); 758 } 759 760 761 static void wpa_supplicant_wps_event_er_enrollee_add( 762 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) 763 { 764 char uuid_str[100]; 765 char dev_type[WPS_DEV_TYPE_BUFSIZE]; 766 767 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); 768 if (enrollee->pri_dev_type) 769 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type, 770 sizeof(dev_type)); 771 else 772 dev_type[0] = '\0'; 773 774 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR 775 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s " 776 "|%s|%s|%s|%s|%s|", 777 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received, 778 enrollee->config_methods, enrollee->dev_passwd_id, dev_type, 779 enrollee->dev_name ? enrollee->dev_name : "", 780 enrollee->manufacturer ? enrollee->manufacturer : "", 781 enrollee->model_name ? enrollee->model_name : "", 782 enrollee->model_number ? enrollee->model_number : "", 783 enrollee->serial_number ? enrollee->serial_number : ""); 784 } 785 786 787 static void wpa_supplicant_wps_event_er_enrollee_remove( 788 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) 789 { 790 char uuid_str[100]; 791 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); 792 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR, 793 uuid_str, MAC2STR(enrollee->mac_addr)); 794 } 795 796 797 static void wpa_supplicant_wps_event_er_ap_settings( 798 struct wpa_supplicant *wpa_s, 799 struct wps_event_er_ap_settings *ap_settings) 800 { 801 char uuid_str[100]; 802 char key_str[65]; 803 const struct wps_credential *cred = ap_settings->cred; 804 805 key_str[0] = '\0'; 806 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { 807 if (cred->key_len >= 8 && cred->key_len <= 64) { 808 os_memcpy(key_str, cred->key, cred->key_len); 809 key_str[cred->key_len] = '\0'; 810 } 811 } 812 813 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str)); 814 /* Use wpa_msg_ctrl to avoid showing the key in debug log */ 815 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS 816 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x " 817 "key=%s", 818 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len), 819 cred->auth_type, cred->encr_type, key_str); 820 } 821 822 823 static void wpa_supplicant_wps_event_er_set_sel_reg( 824 struct wpa_supplicant *wpa_s, 825 struct wps_event_er_set_selected_registrar *ev) 826 { 827 char uuid_str[100]; 828 829 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str)); 830 switch (ev->state) { 831 case WPS_ER_SET_SEL_REG_START: 832 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG 833 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u " 834 "sel_reg_config_methods=0x%x", 835 uuid_str, ev->sel_reg, ev->dev_passwd_id, 836 ev->sel_reg_config_methods); 837 break; 838 case WPS_ER_SET_SEL_REG_DONE: 839 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG 840 "uuid=%s state=DONE", uuid_str); 841 break; 842 case WPS_ER_SET_SEL_REG_FAILED: 843 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG 844 "uuid=%s state=FAILED", uuid_str); 845 break; 846 } 847 } 848 849 850 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event, 851 union wps_event_data *data) 852 { 853 struct wpa_supplicant *wpa_s = ctx; 854 switch (event) { 855 case WPS_EV_M2D: 856 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d); 857 break; 858 case WPS_EV_FAIL: 859 wpa_supplicant_wps_event_fail(wpa_s, &data->fail); 860 break; 861 case WPS_EV_SUCCESS: 862 wpa_supplicant_wps_event_success(wpa_s); 863 break; 864 case WPS_EV_PWD_AUTH_FAIL: 865 #ifdef CONFIG_AP 866 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee) 867 wpa_supplicant_ap_pwd_auth_fail(wpa_s); 868 #endif /* CONFIG_AP */ 869 break; 870 case WPS_EV_PBC_OVERLAP: 871 break; 872 case WPS_EV_PBC_TIMEOUT: 873 break; 874 case WPS_EV_PBC_ACTIVE: 875 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE); 876 break; 877 case WPS_EV_PBC_DISABLE: 878 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE); 879 break; 880 case WPS_EV_ER_AP_ADD: 881 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap); 882 break; 883 case WPS_EV_ER_AP_REMOVE: 884 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap); 885 break; 886 case WPS_EV_ER_ENROLLEE_ADD: 887 wpa_supplicant_wps_event_er_enrollee_add(wpa_s, 888 &data->enrollee); 889 break; 890 case WPS_EV_ER_ENROLLEE_REMOVE: 891 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s, 892 &data->enrollee); 893 break; 894 case WPS_EV_ER_AP_SETTINGS: 895 wpa_supplicant_wps_event_er_ap_settings(wpa_s, 896 &data->ap_settings); 897 break; 898 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 899 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s, 900 &data->set_sel_reg); 901 break; 902 case WPS_EV_AP_PIN_SUCCESS: 903 break; 904 } 905 } 906 907 908 static int wpa_supplicant_wps_rf_band(void *ctx) 909 { 910 struct wpa_supplicant *wpa_s = ctx; 911 912 if (!wpa_s->current_ssid || !wpa_s->assoc_freq) 913 return 0; 914 915 return (wpa_s->assoc_freq > 50000) ? WPS_RF_60GHZ : 916 (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ; 917 } 918 919 920 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid) 921 { 922 if (eap_is_wps_pbc_enrollee(&ssid->eap) || 923 eap_is_wps_pin_enrollee(&ssid->eap)) 924 return WPS_REQ_ENROLLEE; 925 else 926 return WPS_REQ_REGISTRAR; 927 } 928 929 930 static void wpas_clear_wps(struct wpa_supplicant *wpa_s) 931 { 932 int id; 933 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current; 934 935 wpa_s->after_wps = 0; 936 wpa_s->known_wps_freq = 0; 937 938 prev_current = wpa_s->current_ssid; 939 940 /* Enable the networks disabled during wpas_wps_reassoc */ 941 wpas_wps_reenable_networks(wpa_s); 942 943 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 944 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL); 945 946 /* Remove any existing WPS network from configuration */ 947 ssid = wpa_s->conf->ssid; 948 while (ssid) { 949 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 950 if (ssid == wpa_s->current_ssid) { 951 wpa_s->own_disconnect_req = 1; 952 wpa_supplicant_deauthenticate( 953 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 954 } 955 id = ssid->id; 956 remove_ssid = ssid; 957 } else 958 id = -1; 959 ssid = ssid->next; 960 if (id >= 0) { 961 if (prev_current == remove_ssid) { 962 wpa_sm_set_config(wpa_s->wpa, NULL); 963 eapol_sm_notify_config(wpa_s->eapol, NULL, 964 NULL); 965 } 966 wpas_notify_network_removed(wpa_s, remove_ssid); 967 wpa_config_remove_network(wpa_s->conf, id); 968 } 969 } 970 971 wpas_wps_clear_ap_info(wpa_s); 972 } 973 974 975 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx) 976 { 977 struct wpa_supplicant *wpa_s = eloop_ctx; 978 union wps_event_data data; 979 980 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed " 981 "out"); 982 os_memset(&data, 0, sizeof(data)); 983 data.fail.config_error = WPS_CFG_MSG_TIMEOUT; 984 data.fail.error_indication = WPS_EI_NO_ERROR; 985 /* 986 * Call wpas_notify_wps_event_fail() directly instead of through 987 * wpa_supplicant_wps_event() which would end up registering unnecessary 988 * timeouts (those are only for the case where the failure happens 989 * during an EAP-WSC exchange). 990 */ 991 wpas_notify_wps_event_fail(wpa_s, &data.fail); 992 wpas_clear_wps(wpa_s); 993 } 994 995 996 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s, 997 int registrar, const u8 *dev_addr, 998 const u8 *bssid) 999 { 1000 struct wpa_ssid *ssid; 1001 1002 ssid = wpa_config_add_network(wpa_s->conf); 1003 if (ssid == NULL) 1004 return NULL; 1005 wpas_notify_network_added(wpa_s, ssid); 1006 wpa_config_set_network_defaults(ssid); 1007 ssid->temporary = 1; 1008 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 || 1009 wpa_config_set(ssid, "eap", "WSC", 0) < 0 || 1010 wpa_config_set(ssid, "identity", registrar ? 1011 "\"" WSC_ID_REGISTRAR "\"" : 1012 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) { 1013 wpas_notify_network_removed(wpa_s, ssid); 1014 wpa_config_remove_network(wpa_s->conf, ssid->id); 1015 return NULL; 1016 } 1017 1018 #ifdef CONFIG_P2P 1019 if (dev_addr) 1020 os_memcpy(ssid->go_p2p_dev_addr, dev_addr, ETH_ALEN); 1021 #endif /* CONFIG_P2P */ 1022 1023 if (bssid) { 1024 #ifndef CONFIG_P2P 1025 struct wpa_bss *bss; 1026 int count = 0; 1027 #endif /* CONFIG_P2P */ 1028 1029 os_memcpy(ssid->bssid, bssid, ETH_ALEN); 1030 ssid->bssid_set = 1; 1031 1032 /* 1033 * Note: With P2P, the SSID may change at the time the WPS 1034 * provisioning is started, so better not filter the AP based 1035 * on the current SSID in the scan results. 1036 */ 1037 #ifndef CONFIG_P2P 1038 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1039 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0) 1040 continue; 1041 1042 os_free(ssid->ssid); 1043 ssid->ssid = os_memdup(bss->ssid, bss->ssid_len); 1044 if (ssid->ssid == NULL) 1045 break; 1046 ssid->ssid_len = bss->ssid_len; 1047 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from " 1048 "scan results", 1049 ssid->ssid, ssid->ssid_len); 1050 count++; 1051 } 1052 1053 if (count > 1) { 1054 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found " 1055 "for the AP; use wildcard"); 1056 os_free(ssid->ssid); 1057 ssid->ssid = NULL; 1058 ssid->ssid_len = 0; 1059 } 1060 #endif /* CONFIG_P2P */ 1061 } 1062 1063 return ssid; 1064 } 1065 1066 1067 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s, 1068 struct wpa_ssid *selected) 1069 { 1070 struct wpa_ssid *ssid; 1071 1072 if (wpa_s->current_ssid) { 1073 wpa_s->own_disconnect_req = 1; 1074 wpa_supplicant_deauthenticate( 1075 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1076 } 1077 1078 /* Mark all other networks disabled and trigger reassociation */ 1079 ssid = wpa_s->conf->ssid; 1080 while (ssid) { 1081 int was_disabled = ssid->disabled; 1082 ssid->disabled_for_connect = 0; 1083 /* 1084 * In case the network object corresponds to a persistent group 1085 * then do not send out network disabled signal. In addition, 1086 * do not change disabled status of persistent network objects 1087 * from 2 to 1 should we connect to another network. 1088 */ 1089 if (was_disabled != 2) { 1090 ssid->disabled = ssid != selected; 1091 if (was_disabled != ssid->disabled) { 1092 if (ssid->disabled) 1093 ssid->disabled_for_connect = 1; 1094 wpas_notify_network_enabled_changed(wpa_s, 1095 ssid); 1096 } 1097 } 1098 ssid = ssid->next; 1099 } 1100 } 1101 1102 1103 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s, 1104 struct wpa_ssid *selected, const u8 *bssid, 1105 int freq) 1106 { 1107 struct wpa_bss *bss; 1108 1109 wpa_s->wps_run++; 1110 if (wpa_s->wps_run == 0) 1111 wpa_s->wps_run++; 1112 wpa_s->after_wps = 0; 1113 wpa_s->known_wps_freq = 0; 1114 if (freq) { 1115 wpa_s->after_wps = 5; 1116 wpa_s->wps_freq = freq; 1117 } else if (bssid) { 1118 bss = wpa_bss_get_bssid_latest(wpa_s, bssid); 1119 if (bss && bss->freq > 0) { 1120 wpa_s->known_wps_freq = 1; 1121 wpa_s->wps_freq = bss->freq; 1122 } 1123 } 1124 1125 wpas_wps_temp_disable(wpa_s, selected); 1126 1127 wpa_s->disconnected = 0; 1128 wpa_s->reassociate = 1; 1129 wpa_s->scan_runs = 0; 1130 wpa_s->normal_scans = 0; 1131 wpa_s->wps_success = 0; 1132 wpa_s->blacklist_cleared = 0; 1133 1134 wpa_supplicant_cancel_sched_scan(wpa_s); 1135 wpa_supplicant_req_scan(wpa_s, 0, 0); 1136 } 1137 1138 1139 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid, 1140 int p2p_group) 1141 { 1142 struct wpa_ssid *ssid; 1143 1144 #ifdef CONFIG_AP 1145 if (wpa_s->ap_iface) { 1146 wpa_printf(MSG_DEBUG, 1147 "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled"); 1148 return -1; 1149 } 1150 #endif /* CONFIG_AP */ 1151 wpas_clear_wps(wpa_s); 1152 ssid = wpas_wps_add_network(wpa_s, 0, NULL, bssid); 1153 if (ssid == NULL) 1154 return -1; 1155 ssid->temporary = 1; 1156 ssid->p2p_group = p2p_group; 1157 /* 1158 * When starting a regular WPS process (not P2P group formation) 1159 * the registrar/final station can be either AP or PCP 1160 * so use a "don't care" value for the pbss flag. 1161 */ 1162 if (!p2p_group) 1163 ssid->pbss = 2; 1164 #ifdef CONFIG_P2P 1165 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { 1166 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); 1167 if (ssid->ssid) { 1168 ssid->ssid_len = wpa_s->go_params->ssid_len; 1169 os_memcpy(ssid->ssid, wpa_s->go_params->ssid, 1170 ssid->ssid_len); 1171 if (wpa_s->go_params->freq > 56160) { 1172 /* P2P in 60 GHz uses PBSS */ 1173 ssid->pbss = 1; 1174 } 1175 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " 1176 "SSID", ssid->ssid, ssid->ssid_len); 1177 } 1178 } 1179 #endif /* CONFIG_P2P */ 1180 if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0) 1181 return -1; 1182 if (wpa_s->wps_fragment_size) 1183 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 1184 wpa_supplicant_wps_event(wpa_s, WPS_EV_PBC_ACTIVE, NULL); 1185 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 1186 wpa_s, NULL); 1187 wpas_wps_reassoc(wpa_s, ssid, bssid, 0); 1188 return 0; 1189 } 1190 1191 1192 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s, 1193 const u8 *dev_addr, const u8 *bssid, 1194 const char *pin, int p2p_group, u16 dev_pw_id, 1195 const u8 *peer_pubkey_hash, 1196 const u8 *ssid_val, size_t ssid_len, int freq) 1197 { 1198 struct wpa_ssid *ssid; 1199 char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN]; 1200 unsigned int rpin = 0; 1201 char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10]; 1202 1203 #ifdef CONFIG_AP 1204 if (wpa_s->ap_iface) { 1205 wpa_printf(MSG_DEBUG, 1206 "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled"); 1207 return -1; 1208 } 1209 #endif /* CONFIG_AP */ 1210 wpas_clear_wps(wpa_s); 1211 if (bssid && is_zero_ether_addr(bssid)) 1212 bssid = NULL; 1213 ssid = wpas_wps_add_network(wpa_s, 0, dev_addr, bssid); 1214 if (ssid == NULL) { 1215 wpa_printf(MSG_DEBUG, "WPS: Could not add network"); 1216 return -1; 1217 } 1218 ssid->temporary = 1; 1219 ssid->p2p_group = p2p_group; 1220 /* 1221 * When starting a regular WPS process (not P2P group formation) 1222 * the registrar/final station can be either AP or PCP 1223 * so use a "don't care" value for the pbss flag. 1224 */ 1225 if (!p2p_group) 1226 ssid->pbss = 2; 1227 if (ssid_val) { 1228 ssid->ssid = os_malloc(ssid_len); 1229 if (ssid->ssid) { 1230 os_memcpy(ssid->ssid, ssid_val, ssid_len); 1231 ssid->ssid_len = ssid_len; 1232 } 1233 } 1234 if (peer_pubkey_hash) { 1235 os_memcpy(hash, " pkhash=", 8); 1236 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8, 1237 peer_pubkey_hash, 1238 WPS_OOB_PUBKEY_HASH_LEN); 1239 } else { 1240 hash[0] = '\0'; 1241 } 1242 #ifdef CONFIG_P2P 1243 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { 1244 os_free(ssid->ssid); 1245 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); 1246 if (ssid->ssid) { 1247 ssid->ssid_len = wpa_s->go_params->ssid_len; 1248 os_memcpy(ssid->ssid, wpa_s->go_params->ssid, 1249 ssid->ssid_len); 1250 if (wpa_s->go_params->freq > 56160) { 1251 /* P2P in 60 GHz uses PBSS */ 1252 ssid->pbss = 1; 1253 } 1254 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " 1255 "SSID", ssid->ssid, ssid->ssid_len); 1256 } 1257 } 1258 #endif /* CONFIG_P2P */ 1259 if (pin) 1260 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"", 1261 pin, dev_pw_id, hash); 1262 else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) { 1263 os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"", 1264 dev_pw_id, hash); 1265 } else { 1266 if (wps_generate_pin(&rpin) < 0) { 1267 wpa_printf(MSG_DEBUG, "WPS: Could not generate PIN"); 1268 return -1; 1269 } 1270 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"", 1271 rpin, dev_pw_id, hash); 1272 } 1273 if (wpa_config_set(ssid, "phase1", val, 0) < 0) { 1274 wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val); 1275 return -1; 1276 } 1277 if (wpa_s->wps_fragment_size) 1278 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 1279 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 1280 wpa_s, NULL); 1281 wpa_s->wps_ap_iter = 1; 1282 wpas_wps_reassoc(wpa_s, ssid, bssid, freq); 1283 return rpin; 1284 } 1285 1286 1287 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid, 1288 const char *pin, int p2p_group, u16 dev_pw_id) 1289 { 1290 os_get_reltime(&wpa_s->wps_pin_start_time); 1291 return wpas_wps_start_dev_pw(wpa_s, NULL, bssid, pin, p2p_group, 1292 dev_pw_id, NULL, NULL, 0, 0); 1293 } 1294 1295 1296 void wpas_wps_pbc_overlap(struct wpa_supplicant *wpa_s) 1297 { 1298 union wps_event_data data; 1299 1300 os_memset(&data, 0, sizeof(data)); 1301 data.fail.config_error = WPS_CFG_MULTIPLE_PBC_DETECTED; 1302 data.fail.error_indication = WPS_EI_NO_ERROR; 1303 /* 1304 * Call wpas_notify_wps_event_fail() directly instead of through 1305 * wpa_supplicant_wps_event() which would end up registering unnecessary 1306 * timeouts (those are only for the case where the failure happens 1307 * during an EAP-WSC exchange). 1308 */ 1309 wpas_notify_wps_event_fail(wpa_s, &data.fail); 1310 } 1311 1312 /* Cancel the wps pbc/pin requests */ 1313 int wpas_wps_cancel(struct wpa_supplicant *wpa_s) 1314 { 1315 #ifdef CONFIG_AP 1316 if (wpa_s->ap_iface) { 1317 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode"); 1318 return wpa_supplicant_ap_wps_cancel(wpa_s); 1319 } 1320 #endif /* CONFIG_AP */ 1321 1322 if (wpa_s->wpa_state == WPA_SCANNING || 1323 wpa_s->wpa_state == WPA_DISCONNECTED) { 1324 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan"); 1325 wpa_supplicant_cancel_scan(wpa_s); 1326 wpas_clear_wps(wpa_s); 1327 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) { 1328 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - " 1329 "deauthenticate"); 1330 wpa_s->own_disconnect_req = 1; 1331 wpa_supplicant_deauthenticate(wpa_s, 1332 WLAN_REASON_DEAUTH_LEAVING); 1333 wpas_clear_wps(wpa_s); 1334 } else { 1335 wpas_wps_reenable_networks(wpa_s); 1336 wpas_wps_clear_ap_info(wpa_s); 1337 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) > 1338 0) 1339 wpas_clear_wps(wpa_s); 1340 } 1341 1342 wpa_s->after_wps = 0; 1343 1344 return 0; 1345 } 1346 1347 1348 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid, 1349 const char *pin, struct wps_new_ap_settings *settings) 1350 { 1351 struct wpa_ssid *ssid; 1352 char val[200]; 1353 char *pos, *end; 1354 int res; 1355 1356 #ifdef CONFIG_AP 1357 if (wpa_s->ap_iface) { 1358 wpa_printf(MSG_DEBUG, 1359 "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled"); 1360 return -1; 1361 } 1362 #endif /* CONFIG_AP */ 1363 if (!pin) 1364 return -1; 1365 wpas_clear_wps(wpa_s); 1366 ssid = wpas_wps_add_network(wpa_s, 1, NULL, bssid); 1367 if (ssid == NULL) 1368 return -1; 1369 ssid->temporary = 1; 1370 pos = val; 1371 end = pos + sizeof(val); 1372 res = os_snprintf(pos, end - pos, "\"pin=%s", pin); 1373 if (os_snprintf_error(end - pos, res)) 1374 return -1; 1375 pos += res; 1376 if (settings) { 1377 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s " 1378 "new_encr=%s new_key=%s", 1379 settings->ssid_hex, settings->auth, 1380 settings->encr, settings->key_hex); 1381 if (os_snprintf_error(end - pos, res)) 1382 return -1; 1383 pos += res; 1384 } 1385 res = os_snprintf(pos, end - pos, "\""); 1386 if (os_snprintf_error(end - pos, res)) 1387 return -1; 1388 if (wpa_config_set(ssid, "phase1", val, 0) < 0) 1389 return -1; 1390 if (wpa_s->wps_fragment_size) 1391 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 1392 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 1393 wpa_s, NULL); 1394 wpas_wps_reassoc(wpa_s, ssid, bssid, 0); 1395 return 0; 1396 } 1397 1398 1399 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, 1400 const u8 *p2p_dev_addr, const u8 *psk, 1401 size_t psk_len) 1402 { 1403 if (is_zero_ether_addr(p2p_dev_addr)) { 1404 wpa_printf(MSG_DEBUG, 1405 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR, 1406 MAC2STR(mac_addr)); 1407 } else { 1408 wpa_printf(MSG_DEBUG, 1409 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR 1410 " P2P Device Addr " MACSTR, 1411 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 1412 } 1413 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len); 1414 1415 /* TODO */ 1416 1417 return 0; 1418 } 1419 1420 1421 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, 1422 const struct wps_device_data *dev) 1423 { 1424 char uuid[40], txt[400]; 1425 int len; 1426 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1427 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 1428 return; 1429 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid); 1430 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR 1431 " [%s|%s|%s|%s|%s|%s]", 1432 uuid, MAC2STR(dev->mac_addr), dev->device_name, 1433 dev->manufacturer, dev->model_name, 1434 dev->model_number, dev->serial_number, 1435 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 1436 sizeof(devtype))); 1437 if (!os_snprintf_error(sizeof(txt), len)) 1438 wpa_printf(MSG_INFO, "%s", txt); 1439 } 1440 1441 1442 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id, 1443 u16 sel_reg_config_methods) 1444 { 1445 #ifdef CONFIG_WPS_ER 1446 struct wpa_supplicant *wpa_s = ctx; 1447 1448 if (wpa_s->wps_er == NULL) 1449 return; 1450 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d " 1451 "dev_password_id=%u sel_reg_config_methods=0x%x", 1452 sel_reg, dev_passwd_id, sel_reg_config_methods); 1453 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id, 1454 sel_reg_config_methods); 1455 #endif /* CONFIG_WPS_ER */ 1456 } 1457 1458 1459 static u16 wps_fix_config_methods(u16 config_methods) 1460 { 1461 if ((config_methods & 1462 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1463 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1464 wpa_printf(MSG_INFO, "WPS: Converting display to " 1465 "virtual_display for WPS 2.0 compliance"); 1466 config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1467 } 1468 if ((config_methods & 1469 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1470 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1471 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1472 "virtual_push_button for WPS 2.0 compliance"); 1473 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1474 } 1475 1476 return config_methods; 1477 } 1478 1479 1480 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s, 1481 struct wps_context *wps) 1482 { 1483 char buf[50]; 1484 const char *src; 1485 1486 if (is_nil_uuid(wpa_s->conf->uuid)) { 1487 struct wpa_supplicant *first; 1488 first = wpa_s->global->ifaces; 1489 while (first && first->next) 1490 first = first->next; 1491 if (first && first != wpa_s) { 1492 if (wps != wpa_s->global->ifaces->wps) 1493 os_memcpy(wps->uuid, 1494 wpa_s->global->ifaces->wps->uuid, 1495 WPS_UUID_LEN); 1496 src = "from the first interface"; 1497 } else if (wpa_s->conf->auto_uuid == 1) { 1498 uuid_random(wps->uuid); 1499 src = "based on random data"; 1500 } else { 1501 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid); 1502 src = "based on MAC address"; 1503 } 1504 } else { 1505 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN); 1506 src = "based on configuration"; 1507 } 1508 1509 uuid_bin2str(wps->uuid, buf, sizeof(buf)); 1510 wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf); 1511 } 1512 1513 1514 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s, 1515 struct wps_context *wps) 1516 { 1517 wpabuf_free(wps->dev.vendor_ext_m1); 1518 wps->dev.vendor_ext_m1 = NULL; 1519 1520 if (wpa_s->conf->wps_vendor_ext_m1) { 1521 wps->dev.vendor_ext_m1 = 1522 wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1); 1523 if (!wps->dev.vendor_ext_m1) { 1524 wpa_printf(MSG_ERROR, "WPS: Cannot " 1525 "allocate memory for vendor_ext_m1"); 1526 } 1527 } 1528 } 1529 1530 1531 int wpas_wps_init(struct wpa_supplicant *wpa_s) 1532 { 1533 struct wps_context *wps; 1534 struct wps_registrar_config rcfg; 1535 struct hostapd_hw_modes *modes; 1536 u16 m; 1537 1538 wps = os_zalloc(sizeof(*wps)); 1539 if (wps == NULL) 1540 return -1; 1541 1542 wps->cred_cb = wpa_supplicant_wps_cred; 1543 wps->event_cb = wpa_supplicant_wps_event; 1544 wps->rf_band_cb = wpa_supplicant_wps_rf_band; 1545 wps->cb_ctx = wpa_s; 1546 1547 wps->dev.device_name = wpa_s->conf->device_name; 1548 wps->dev.manufacturer = wpa_s->conf->manufacturer; 1549 wps->dev.model_name = wpa_s->conf->model_name; 1550 wps->dev.model_number = wpa_s->conf->model_number; 1551 wps->dev.serial_number = wpa_s->conf->serial_number; 1552 wps->config_methods = 1553 wps_config_methods_str2bin(wpa_s->conf->config_methods); 1554 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == 1555 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { 1556 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config " 1557 "methods are not allowed at the same time"); 1558 os_free(wps); 1559 return -1; 1560 } 1561 wps->config_methods = wps_fix_config_methods(wps->config_methods); 1562 wps->dev.config_methods = wps->config_methods; 1563 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, 1564 WPS_DEV_TYPE_LEN); 1565 1566 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 1567 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, 1568 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types); 1569 1570 wpas_wps_set_vendor_ext_m1(wpa_s, wps); 1571 1572 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); 1573 modes = wpa_s->hw.modes; 1574 if (modes) { 1575 for (m = 0; m < wpa_s->hw.num_modes; m++) { 1576 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B || 1577 modes[m].mode == HOSTAPD_MODE_IEEE80211G) 1578 wps->dev.rf_bands |= WPS_RF_24GHZ; 1579 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A) 1580 wps->dev.rf_bands |= WPS_RF_50GHZ; 1581 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211AD) 1582 wps->dev.rf_bands |= WPS_RF_60GHZ; 1583 } 1584 } 1585 if (wps->dev.rf_bands == 0) { 1586 /* 1587 * Default to claiming support for both bands if the driver 1588 * does not provide support for fetching supported bands. 1589 */ 1590 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; 1591 } 1592 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN); 1593 wpas_wps_set_uuid(wpa_s, wps); 1594 1595 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1596 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1597 1598 os_memset(&rcfg, 0, sizeof(rcfg)); 1599 rcfg.new_psk_cb = wpas_wps_new_psk_cb; 1600 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb; 1601 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb; 1602 rcfg.cb_ctx = wpa_s; 1603 1604 wps->registrar = wps_registrar_init(wps, &rcfg); 1605 if (wps->registrar == NULL) { 1606 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar"); 1607 os_free(wps); 1608 return -1; 1609 } 1610 1611 wpa_s->wps = wps; 1612 1613 return 0; 1614 } 1615 1616 1617 #ifdef CONFIG_WPS_ER 1618 static void wpas_wps_nfc_clear(struct wps_context *wps) 1619 { 1620 wps->ap_nfc_dev_pw_id = 0; 1621 wpabuf_free(wps->ap_nfc_dh_pubkey); 1622 wps->ap_nfc_dh_pubkey = NULL; 1623 wpabuf_free(wps->ap_nfc_dh_privkey); 1624 wps->ap_nfc_dh_privkey = NULL; 1625 wpabuf_free(wps->ap_nfc_dev_pw); 1626 wps->ap_nfc_dev_pw = NULL; 1627 } 1628 #endif /* CONFIG_WPS_ER */ 1629 1630 1631 void wpas_wps_deinit(struct wpa_supplicant *wpa_s) 1632 { 1633 wpas_wps_assoc_with_cred_cancel(wpa_s); 1634 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 1635 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL); 1636 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL); 1637 wpas_wps_clear_ap_info(wpa_s); 1638 1639 #ifdef CONFIG_P2P 1640 eloop_cancel_timeout(wpas_p2p_pbc_overlap_cb, wpa_s, NULL); 1641 #endif /* CONFIG_P2P */ 1642 1643 if (wpa_s->wps == NULL) 1644 return; 1645 1646 #ifdef CONFIG_WPS_ER 1647 wps_er_deinit(wpa_s->wps_er, NULL, NULL); 1648 wpa_s->wps_er = NULL; 1649 wpas_wps_nfc_clear(wpa_s->wps); 1650 #endif /* CONFIG_WPS_ER */ 1651 1652 wps_registrar_deinit(wpa_s->wps->registrar); 1653 wpabuf_free(wpa_s->wps->dh_pubkey); 1654 wpabuf_free(wpa_s->wps->dh_privkey); 1655 wpabuf_free(wpa_s->wps->dev.vendor_ext_m1); 1656 os_free(wpa_s->wps->network_key); 1657 os_free(wpa_s->wps); 1658 wpa_s->wps = NULL; 1659 } 1660 1661 1662 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s, 1663 struct wpa_ssid *ssid, struct wpa_bss *bss) 1664 { 1665 struct wpabuf *wps_ie; 1666 1667 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) 1668 return -1; 1669 1670 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1671 if (eap_is_wps_pbc_enrollee(&ssid->eap)) { 1672 if (!wps_ie) { 1673 wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); 1674 return 0; 1675 } 1676 1677 if (!wps_is_selected_pbc_registrar(wps_ie)) { 1678 wpa_printf(MSG_DEBUG, " skip - WPS AP " 1679 "without active PBC Registrar"); 1680 wpabuf_free(wps_ie); 1681 return 0; 1682 } 1683 1684 /* TODO: overlap detection */ 1685 wpa_printf(MSG_DEBUG, " selected based on WPS IE " 1686 "(Active PBC)"); 1687 wpabuf_free(wps_ie); 1688 return 1; 1689 } 1690 1691 if (eap_is_wps_pin_enrollee(&ssid->eap)) { 1692 if (!wps_ie) { 1693 wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); 1694 return 0; 1695 } 1696 1697 /* 1698 * Start with WPS APs that advertise our address as an 1699 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and 1700 * allow any WPS AP after couple of scans since some APs do not 1701 * set Selected Registrar attribute properly when using 1702 * external Registrar. 1703 */ 1704 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) { 1705 struct os_reltime age; 1706 1707 os_reltime_age(&wpa_s->wps_pin_start_time, &age); 1708 1709 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG || 1710 age.sec < WPS_PIN_TIME_IGNORE_SEL_REG) { 1711 wpa_printf(MSG_DEBUG, 1712 " skip - WPS AP without active PIN Registrar (scan_runs=%d age=%d)", 1713 wpa_s->scan_runs, (int) age.sec); 1714 wpabuf_free(wps_ie); 1715 return 0; 1716 } 1717 wpa_printf(MSG_DEBUG, " selected based on WPS IE"); 1718 } else { 1719 wpa_printf(MSG_DEBUG, " selected based on WPS IE " 1720 "(Authorized MAC or Active PIN)"); 1721 } 1722 wpabuf_free(wps_ie); 1723 return 1; 1724 } 1725 1726 if (wps_ie) { 1727 wpa_printf(MSG_DEBUG, " selected based on WPS IE"); 1728 wpabuf_free(wps_ie); 1729 return 1; 1730 } 1731 1732 return -1; 1733 } 1734 1735 1736 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s, 1737 struct wpa_ssid *ssid, 1738 struct wpa_bss *bss) 1739 { 1740 struct wpabuf *wps_ie = NULL; 1741 int ret = 0; 1742 1743 if (eap_is_wps_pbc_enrollee(&ssid->eap)) { 1744 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1745 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) { 1746 /* allow wildcard SSID for WPS PBC */ 1747 ret = 1; 1748 } 1749 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) { 1750 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1751 if (wps_ie && 1752 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) || 1753 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) { 1754 /* allow wildcard SSID for WPS PIN */ 1755 ret = 1; 1756 } 1757 } 1758 1759 if (!ret && ssid->bssid_set && 1760 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) { 1761 /* allow wildcard SSID due to hardcoded BSSID match */ 1762 ret = 1; 1763 } 1764 1765 #ifdef CONFIG_WPS_STRICT 1766 if (wps_ie) { 1767 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len > 1768 0, bss->bssid) < 0) 1769 ret = 0; 1770 if (bss->beacon_ie_len) { 1771 struct wpabuf *bcn_wps; 1772 bcn_wps = wpa_bss_get_vendor_ie_multi_beacon( 1773 bss, WPS_IE_VENDOR_TYPE); 1774 if (bcn_wps == NULL) { 1775 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE " 1776 "missing from AP Beacon"); 1777 ret = 0; 1778 } else { 1779 if (wps_validate_beacon(wps_ie) < 0) 1780 ret = 0; 1781 wpabuf_free(bcn_wps); 1782 } 1783 } 1784 } 1785 #endif /* CONFIG_WPS_STRICT */ 1786 1787 wpabuf_free(wps_ie); 1788 1789 return ret; 1790 } 1791 1792 1793 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s, 1794 struct wpa_bss *selected, struct wpa_ssid *ssid) 1795 { 1796 const u8 *sel_uuid; 1797 struct wpabuf *wps_ie; 1798 int ret = 0; 1799 size_t i; 1800 1801 if (!eap_is_wps_pbc_enrollee(&ssid->eap)) 1802 return 0; 1803 1804 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is " 1805 "present in scan results; selected BSSID " MACSTR, 1806 MAC2STR(selected->bssid)); 1807 1808 /* Make sure that only one AP is in active PBC mode */ 1809 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE); 1810 if (wps_ie) { 1811 sel_uuid = wps_get_uuid_e(wps_ie); 1812 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS", 1813 sel_uuid, UUID_LEN); 1814 } else { 1815 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include " 1816 "WPS IE?!"); 1817 sel_uuid = NULL; 1818 } 1819 1820 for (i = 0; i < wpa_s->num_wps_ap; i++) { 1821 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 1822 1823 if (!ap->pbc_active || 1824 os_memcmp(selected->bssid, ap->bssid, ETH_ALEN) == 0) 1825 continue; 1826 1827 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: " 1828 MACSTR, MAC2STR(ap->bssid)); 1829 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS", 1830 ap->uuid, UUID_LEN); 1831 if (sel_uuid == NULL || 1832 os_memcmp(sel_uuid, ap->uuid, UUID_LEN) != 0) { 1833 ret = 1; /* PBC overlap */ 1834 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: " 1835 MACSTR " and " MACSTR, 1836 MAC2STR(selected->bssid), 1837 MAC2STR(ap->bssid)); 1838 break; 1839 } 1840 1841 /* TODO: verify that this is reasonable dual-band situation */ 1842 } 1843 1844 wpabuf_free(wps_ie); 1845 1846 return ret; 1847 } 1848 1849 1850 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s) 1851 { 1852 struct wpa_bss *bss; 1853 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0; 1854 1855 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED) 1856 return; 1857 1858 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1859 struct wpabuf *ie; 1860 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1861 if (!ie) 1862 continue; 1863 if (wps_is_selected_pbc_registrar(ie)) 1864 pbc++; 1865 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0)) 1866 auth++; 1867 else if (wps_is_selected_pin_registrar(ie)) 1868 pin++; 1869 else 1870 wps++; 1871 wpabuf_free(ie); 1872 } 1873 1874 if (pbc) 1875 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC); 1876 else if (auth) 1877 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH); 1878 else if (pin) 1879 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN); 1880 else if (wps) 1881 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE); 1882 } 1883 1884 1885 int wpas_wps_searching(struct wpa_supplicant *wpa_s) 1886 { 1887 struct wpa_ssid *ssid; 1888 1889 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1890 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled) 1891 return 1; 1892 } 1893 1894 return 0; 1895 } 1896 1897 1898 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 1899 char *end) 1900 { 1901 struct wpabuf *wps_ie; 1902 int ret; 1903 1904 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA); 1905 if (wps_ie == NULL) 1906 return 0; 1907 1908 ret = wps_attr_text(wps_ie, buf, end); 1909 wpabuf_free(wps_ie); 1910 return ret; 1911 } 1912 1913 1914 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter) 1915 { 1916 #ifdef CONFIG_WPS_ER 1917 if (wpa_s->wps_er) { 1918 wps_er_refresh(wpa_s->wps_er); 1919 return 0; 1920 } 1921 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter); 1922 if (wpa_s->wps_er == NULL) 1923 return -1; 1924 return 0; 1925 #else /* CONFIG_WPS_ER */ 1926 return 0; 1927 #endif /* CONFIG_WPS_ER */ 1928 } 1929 1930 1931 void wpas_wps_er_stop(struct wpa_supplicant *wpa_s) 1932 { 1933 #ifdef CONFIG_WPS_ER 1934 wps_er_deinit(wpa_s->wps_er, NULL, NULL); 1935 wpa_s->wps_er = NULL; 1936 #endif /* CONFIG_WPS_ER */ 1937 } 1938 1939 1940 #ifdef CONFIG_WPS_ER 1941 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr, 1942 const char *uuid, const char *pin) 1943 { 1944 u8 u[UUID_LEN]; 1945 const u8 *use_uuid = NULL; 1946 u8 addr_buf[ETH_ALEN]; 1947 1948 if (os_strcmp(uuid, "any") == 0) { 1949 } else if (uuid_str2bin(uuid, u) == 0) { 1950 use_uuid = u; 1951 } else if (hwaddr_aton(uuid, addr_buf) == 0) { 1952 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf); 1953 if (use_uuid == NULL) 1954 return -1; 1955 } else 1956 return -1; 1957 return wps_registrar_add_pin(wpa_s->wps->registrar, addr, 1958 use_uuid, 1959 (const u8 *) pin, os_strlen(pin), 300); 1960 } 1961 1962 1963 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid) 1964 { 1965 u8 u[UUID_LEN], *use_uuid = NULL; 1966 u8 addr[ETH_ALEN], *use_addr = NULL; 1967 1968 if (uuid_str2bin(uuid, u) == 0) 1969 use_uuid = u; 1970 else if (hwaddr_aton(uuid, addr) == 0) 1971 use_addr = addr; 1972 else 1973 return -1; 1974 return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr); 1975 } 1976 1977 1978 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid, 1979 const char *pin) 1980 { 1981 u8 u[UUID_LEN], *use_uuid = NULL; 1982 u8 addr[ETH_ALEN], *use_addr = NULL; 1983 1984 if (uuid_str2bin(uuid, u) == 0) 1985 use_uuid = u; 1986 else if (hwaddr_aton(uuid, addr) == 0) 1987 use_addr = addr; 1988 else 1989 return -1; 1990 1991 return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin, 1992 os_strlen(pin)); 1993 } 1994 1995 1996 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid, 1997 struct wps_credential *cred) 1998 { 1999 os_memset(cred, 0, sizeof(*cred)); 2000 if (ssid->ssid_len > SSID_MAX_LEN) 2001 return -1; 2002 os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len); 2003 cred->ssid_len = ssid->ssid_len; 2004 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) { 2005 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ? 2006 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK; 2007 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP) 2008 cred->encr_type = WPS_ENCR_AES; 2009 else 2010 cred->encr_type = WPS_ENCR_TKIP; 2011 if (ssid->passphrase) { 2012 cred->key_len = os_strlen(ssid->passphrase); 2013 if (cred->key_len >= 64) 2014 return -1; 2015 os_memcpy(cred->key, ssid->passphrase, cred->key_len); 2016 } else if (ssid->psk_set) { 2017 cred->key_len = 32; 2018 os_memcpy(cred->key, ssid->psk, 32); 2019 } else 2020 return -1; 2021 } else { 2022 cred->auth_type = WPS_AUTH_OPEN; 2023 cred->encr_type = WPS_ENCR_NONE; 2024 } 2025 2026 return 0; 2027 } 2028 2029 2030 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid, 2031 int id) 2032 { 2033 u8 u[UUID_LEN], *use_uuid = NULL; 2034 u8 addr[ETH_ALEN], *use_addr = NULL; 2035 struct wpa_ssid *ssid; 2036 struct wps_credential cred; 2037 int ret; 2038 2039 if (uuid_str2bin(uuid, u) == 0) 2040 use_uuid = u; 2041 else if (hwaddr_aton(uuid, addr) == 0) 2042 use_addr = addr; 2043 else 2044 return -1; 2045 ssid = wpa_config_get_network(wpa_s->conf, id); 2046 if (ssid == NULL || ssid->ssid == NULL) 2047 return -1; 2048 2049 if (wpas_wps_network_to_cred(ssid, &cred) < 0) 2050 return -1; 2051 ret = wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred); 2052 os_memset(&cred, 0, sizeof(cred)); 2053 return ret; 2054 } 2055 2056 2057 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid, 2058 const char *pin, struct wps_new_ap_settings *settings) 2059 { 2060 u8 u[UUID_LEN], *use_uuid = NULL; 2061 u8 addr[ETH_ALEN], *use_addr = NULL; 2062 struct wps_credential cred; 2063 size_t len; 2064 2065 if (uuid_str2bin(uuid, u) == 0) 2066 use_uuid = u; 2067 else if (hwaddr_aton(uuid, addr) == 0) 2068 use_addr = addr; 2069 else 2070 return -1; 2071 if (settings->ssid_hex == NULL || settings->auth == NULL || 2072 settings->encr == NULL || settings->key_hex == NULL) 2073 return -1; 2074 2075 os_memset(&cred, 0, sizeof(cred)); 2076 len = os_strlen(settings->ssid_hex); 2077 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 2078 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2)) 2079 return -1; 2080 cred.ssid_len = len / 2; 2081 2082 len = os_strlen(settings->key_hex); 2083 if ((len & 1) || len > 2 * sizeof(cred.key) || 2084 hexstr2bin(settings->key_hex, cred.key, len / 2)) 2085 return -1; 2086 cred.key_len = len / 2; 2087 2088 if (os_strcmp(settings->auth, "OPEN") == 0) 2089 cred.auth_type = WPS_AUTH_OPEN; 2090 else if (os_strcmp(settings->auth, "WPAPSK") == 0) 2091 cred.auth_type = WPS_AUTH_WPAPSK; 2092 else if (os_strcmp(settings->auth, "WPA2PSK") == 0) 2093 cred.auth_type = WPS_AUTH_WPA2PSK; 2094 else 2095 return -1; 2096 2097 if (os_strcmp(settings->encr, "NONE") == 0) 2098 cred.encr_type = WPS_ENCR_NONE; 2099 #ifdef CONFIG_TESTING_OPTIONS 2100 else if (os_strcmp(settings->encr, "WEP") == 0) 2101 cred.encr_type = WPS_ENCR_WEP; 2102 #endif /* CONFIG_TESTING_OPTIONS */ 2103 else if (os_strcmp(settings->encr, "TKIP") == 0) 2104 cred.encr_type = WPS_ENCR_TKIP; 2105 else if (os_strcmp(settings->encr, "CCMP") == 0) 2106 cred.encr_type = WPS_ENCR_AES; 2107 else 2108 return -1; 2109 2110 return wps_er_config(wpa_s->wps_er, use_uuid, use_addr, 2111 (const u8 *) pin, os_strlen(pin), &cred); 2112 } 2113 2114 2115 #ifdef CONFIG_WPS_NFC 2116 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s, 2117 int ndef, const char *uuid) 2118 { 2119 struct wpabuf *ret; 2120 u8 u[UUID_LEN], *use_uuid = NULL; 2121 u8 addr[ETH_ALEN], *use_addr = NULL; 2122 2123 if (!wpa_s->wps_er) 2124 return NULL; 2125 2126 if (uuid_str2bin(uuid, u) == 0) 2127 use_uuid = u; 2128 else if (hwaddr_aton(uuid, addr) == 0) 2129 use_addr = addr; 2130 else 2131 return NULL; 2132 2133 ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr); 2134 if (ndef && ret) { 2135 struct wpabuf *tmp; 2136 tmp = ndef_build_wifi(ret); 2137 wpabuf_free(ret); 2138 if (tmp == NULL) 2139 return NULL; 2140 ret = tmp; 2141 } 2142 2143 return ret; 2144 } 2145 #endif /* CONFIG_WPS_NFC */ 2146 2147 2148 static int callbacks_pending = 0; 2149 2150 static void wpas_wps_terminate_cb(void *ctx) 2151 { 2152 wpa_printf(MSG_DEBUG, "WPS ER: Terminated"); 2153 if (--callbacks_pending <= 0) 2154 eloop_terminate(); 2155 } 2156 #endif /* CONFIG_WPS_ER */ 2157 2158 2159 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s) 2160 { 2161 #ifdef CONFIG_WPS_ER 2162 if (wpa_s->wps_er) { 2163 callbacks_pending++; 2164 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s); 2165 wpa_s->wps_er = NULL; 2166 return 1; 2167 } 2168 #endif /* CONFIG_WPS_ER */ 2169 return 0; 2170 } 2171 2172 2173 void wpas_wps_update_config(struct wpa_supplicant *wpa_s) 2174 { 2175 struct wps_context *wps = wpa_s->wps; 2176 2177 if (wps == NULL) 2178 return; 2179 2180 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) { 2181 wps->config_methods = wps_config_methods_str2bin( 2182 wpa_s->conf->config_methods); 2183 if ((wps->config_methods & 2184 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == 2185 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { 2186 wpa_printf(MSG_ERROR, "WPS: Both Label and Display " 2187 "config methods are not allowed at the " 2188 "same time"); 2189 wps->config_methods &= ~WPS_CONFIG_LABEL; 2190 } 2191 } 2192 wps->config_methods = wps_fix_config_methods(wps->config_methods); 2193 wps->dev.config_methods = wps->config_methods; 2194 2195 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 2196 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, 2197 WPS_DEV_TYPE_LEN); 2198 2199 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) { 2200 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 2201 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, 2202 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN); 2203 } 2204 2205 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) 2206 wpas_wps_set_vendor_ext_m1(wpa_s, wps); 2207 2208 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION) 2209 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); 2210 2211 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) 2212 wpas_wps_set_uuid(wpa_s, wps); 2213 2214 if (wpa_s->conf->changed_parameters & 2215 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) { 2216 /* Update pointers to make sure they refer current values */ 2217 wps->dev.device_name = wpa_s->conf->device_name; 2218 wps->dev.manufacturer = wpa_s->conf->manufacturer; 2219 wps->dev.model_name = wpa_s->conf->model_name; 2220 wps->dev.model_number = wpa_s->conf->model_number; 2221 wps->dev.serial_number = wpa_s->conf->serial_number; 2222 } 2223 } 2224 2225 2226 #ifdef CONFIG_WPS_NFC 2227 2228 #ifdef CONFIG_WPS_ER 2229 static struct wpabuf * 2230 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef, 2231 struct wpa_ssid *ssid) 2232 { 2233 struct wpabuf *ret; 2234 struct wps_credential cred; 2235 2236 if (wpas_wps_network_to_cred(ssid, &cred) < 0) 2237 return NULL; 2238 2239 ret = wps_er_config_token_from_cred(wpa_s->wps, &cred); 2240 2241 if (ndef && ret) { 2242 struct wpabuf *tmp; 2243 tmp = ndef_build_wifi(ret); 2244 wpabuf_free(ret); 2245 if (tmp == NULL) 2246 return NULL; 2247 ret = tmp; 2248 } 2249 2250 return ret; 2251 } 2252 #endif /* CONFIG_WPS_ER */ 2253 2254 2255 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s, 2256 int ndef, const char *id_str) 2257 { 2258 #ifdef CONFIG_WPS_ER 2259 if (id_str) { 2260 int id; 2261 char *end = NULL; 2262 struct wpa_ssid *ssid; 2263 2264 id = strtol(id_str, &end, 10); 2265 if (end && *end) 2266 return NULL; 2267 2268 ssid = wpa_config_get_network(wpa_s->conf, id); 2269 if (ssid == NULL) 2270 return NULL; 2271 return wpas_wps_network_config_token(wpa_s, ndef, ssid); 2272 } 2273 #endif /* CONFIG_WPS_ER */ 2274 #ifdef CONFIG_AP 2275 if (wpa_s->ap_iface) 2276 return wpas_ap_wps_nfc_config_token(wpa_s, ndef); 2277 #endif /* CONFIG_AP */ 2278 return NULL; 2279 } 2280 2281 2282 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef) 2283 { 2284 if (wpa_s->conf->wps_nfc_pw_from_config) { 2285 return wps_nfc_token_build(ndef, 2286 wpa_s->conf->wps_nfc_dev_pw_id, 2287 wpa_s->conf->wps_nfc_dh_pubkey, 2288 wpa_s->conf->wps_nfc_dev_pw); 2289 } 2290 2291 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id, 2292 &wpa_s->conf->wps_nfc_dh_pubkey, 2293 &wpa_s->conf->wps_nfc_dh_privkey, 2294 &wpa_s->conf->wps_nfc_dev_pw); 2295 } 2296 2297 2298 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *go_dev_addr, 2299 const u8 *bssid, 2300 const struct wpabuf *dev_pw, u16 dev_pw_id, 2301 int p2p_group, const u8 *peer_pubkey_hash, 2302 const u8 *ssid, size_t ssid_len, int freq) 2303 { 2304 struct wps_context *wps = wpa_s->wps; 2305 char pw[32 * 2 + 1]; 2306 2307 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) { 2308 dev_pw = wpa_s->conf->wps_nfc_dev_pw; 2309 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 2310 } 2311 2312 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 2313 wpa_s->conf->wps_nfc_dh_privkey == NULL) { 2314 wpa_printf(MSG_DEBUG, "WPS: Missing DH params - " 2315 "cannot start NFC-triggered connection"); 2316 return -1; 2317 } 2318 2319 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) { 2320 wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - " 2321 "cannot start NFC-triggered connection", dev_pw_id); 2322 return -1; 2323 } 2324 2325 dh5_free(wps->dh_ctx); 2326 wpabuf_free(wps->dh_pubkey); 2327 wpabuf_free(wps->dh_privkey); 2328 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 2329 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 2330 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) { 2331 wps->dh_ctx = NULL; 2332 wpabuf_free(wps->dh_pubkey); 2333 wps->dh_pubkey = NULL; 2334 wpabuf_free(wps->dh_privkey); 2335 wps->dh_privkey = NULL; 2336 wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key"); 2337 return -1; 2338 } 2339 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey); 2340 if (wps->dh_ctx == NULL) { 2341 wpabuf_free(wps->dh_pubkey); 2342 wps->dh_pubkey = NULL; 2343 wpabuf_free(wps->dh_privkey); 2344 wps->dh_privkey = NULL; 2345 wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context"); 2346 return -1; 2347 } 2348 2349 if (dev_pw) { 2350 wpa_snprintf_hex_uppercase(pw, sizeof(pw), 2351 wpabuf_head(dev_pw), 2352 wpabuf_len(dev_pw)); 2353 } 2354 return wpas_wps_start_dev_pw(wpa_s, go_dev_addr, bssid, 2355 dev_pw ? pw : NULL, 2356 p2p_group, dev_pw_id, peer_pubkey_hash, 2357 ssid, ssid_len, freq); 2358 } 2359 2360 2361 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s, 2362 struct wps_parse_attr *attr) 2363 { 2364 /* 2365 * Disable existing networks temporarily to allow the newly learned 2366 * credential to be preferred. Enable the temporarily disabled networks 2367 * after 10 seconds. 2368 */ 2369 wpas_wps_temp_disable(wpa_s, NULL); 2370 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s, 2371 NULL); 2372 2373 if (wps_oob_use_cred(wpa_s->wps, attr) < 0) 2374 return -1; 2375 2376 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 2377 return 0; 2378 2379 if (attr->ap_channel) { 2380 u16 chan = WPA_GET_BE16(attr->ap_channel); 2381 int freq = 0; 2382 2383 if (chan >= 1 && chan <= 13) 2384 freq = 2407 + 5 * chan; 2385 else if (chan == 14) 2386 freq = 2484; 2387 else if (chan >= 30) 2388 freq = 5000 + 5 * chan; 2389 2390 if (freq) { 2391 wpa_printf(MSG_DEBUG, "WPS: Credential container indicated AP channel %u -> %u MHz", 2392 chan, freq); 2393 wpa_s->after_wps = 5; 2394 wpa_s->wps_freq = freq; 2395 } 2396 } 2397 2398 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network " 2399 "based on the received credential added"); 2400 wpa_s->normal_scans = 0; 2401 wpa_supplicant_reinit_autoscan(wpa_s); 2402 wpa_s->disconnected = 0; 2403 wpa_s->reassociate = 1; 2404 2405 wpa_supplicant_cancel_sched_scan(wpa_s); 2406 wpa_supplicant_req_scan(wpa_s, 0, 0); 2407 2408 return 0; 2409 } 2410 2411 2412 #ifdef CONFIG_WPS_ER 2413 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s, 2414 struct wps_parse_attr *attr) 2415 { 2416 return wps_registrar_add_nfc_password_token( 2417 wpa_s->wps->registrar, attr->oob_dev_password, 2418 attr->oob_dev_password_len); 2419 } 2420 #endif /* CONFIG_WPS_ER */ 2421 2422 2423 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s, 2424 const struct wpabuf *wps) 2425 { 2426 struct wps_parse_attr attr; 2427 2428 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 2429 2430 if (wps_parse_msg(wps, &attr)) { 2431 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 2432 return -1; 2433 } 2434 2435 if (attr.num_cred) 2436 return wpas_wps_use_cred(wpa_s, &attr); 2437 2438 #ifdef CONFIG_WPS_ER 2439 if (attr.oob_dev_password) 2440 return wpas_wps_add_nfc_password_token(wpa_s, &attr); 2441 #endif /* CONFIG_WPS_ER */ 2442 2443 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 2444 return -1; 2445 } 2446 2447 2448 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s, 2449 const struct wpabuf *data, int forced_freq) 2450 { 2451 const struct wpabuf *wps = data; 2452 struct wpabuf *tmp = NULL; 2453 int ret; 2454 2455 if (wpabuf_len(data) < 4) 2456 return -1; 2457 2458 if (*wpabuf_head_u8(data) != 0x10) { 2459 /* Assume this contains full NDEF record */ 2460 tmp = ndef_parse_wifi(data); 2461 if (tmp == NULL) { 2462 #ifdef CONFIG_P2P 2463 tmp = ndef_parse_p2p(data); 2464 if (tmp) { 2465 ret = wpas_p2p_nfc_tag_process(wpa_s, tmp, 2466 forced_freq); 2467 wpabuf_free(tmp); 2468 return ret; 2469 } 2470 #endif /* CONFIG_P2P */ 2471 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 2472 return -1; 2473 } 2474 wps = tmp; 2475 } 2476 2477 ret = wpas_wps_nfc_tag_process(wpa_s, wps); 2478 wpabuf_free(tmp); 2479 return ret; 2480 } 2481 2482 2483 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, 2484 int ndef) 2485 { 2486 struct wpabuf *ret; 2487 2488 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 2489 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 2490 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 2491 return NULL; 2492 2493 ret = wps_build_nfc_handover_req(wpa_s->wps, 2494 wpa_s->conf->wps_nfc_dh_pubkey); 2495 2496 if (ndef && ret) { 2497 struct wpabuf *tmp; 2498 tmp = ndef_build_wifi(ret); 2499 wpabuf_free(ret); 2500 if (tmp == NULL) 2501 return NULL; 2502 ret = tmp; 2503 } 2504 2505 return ret; 2506 } 2507 2508 2509 #ifdef CONFIG_WPS_NFC 2510 2511 static struct wpabuf * 2512 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef, 2513 const char *uuid) 2514 { 2515 #ifdef CONFIG_WPS_ER 2516 struct wpabuf *ret; 2517 u8 u[UUID_LEN], *use_uuid = NULL; 2518 u8 addr[ETH_ALEN], *use_addr = NULL; 2519 struct wps_context *wps = wpa_s->wps; 2520 2521 if (wps == NULL) 2522 return NULL; 2523 2524 if (uuid == NULL) 2525 return NULL; 2526 if (uuid_str2bin(uuid, u) == 0) 2527 use_uuid = u; 2528 else if (hwaddr_aton(uuid, addr) == 0) 2529 use_addr = addr; 2530 else 2531 return NULL; 2532 2533 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) { 2534 if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 2535 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 2536 return NULL; 2537 } 2538 2539 wpas_wps_nfc_clear(wps); 2540 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 2541 wps->ap_nfc_dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 2542 wps->ap_nfc_dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 2543 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) { 2544 wpas_wps_nfc_clear(wps); 2545 return NULL; 2546 } 2547 2548 ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid, 2549 use_addr, wpa_s->conf->wps_nfc_dh_pubkey); 2550 if (ndef && ret) { 2551 struct wpabuf *tmp; 2552 tmp = ndef_build_wifi(ret); 2553 wpabuf_free(ret); 2554 if (tmp == NULL) 2555 return NULL; 2556 ret = tmp; 2557 } 2558 2559 return ret; 2560 #else /* CONFIG_WPS_ER */ 2561 return NULL; 2562 #endif /* CONFIG_WPS_ER */ 2563 } 2564 #endif /* CONFIG_WPS_NFC */ 2565 2566 2567 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s, 2568 int ndef, int cr, const char *uuid) 2569 { 2570 struct wpabuf *ret; 2571 if (!cr) 2572 return NULL; 2573 ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef); 2574 if (ret) 2575 return ret; 2576 return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid); 2577 } 2578 2579 2580 static int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s, 2581 const struct wpabuf *data) 2582 { 2583 struct wpabuf *wps; 2584 int ret = -1; 2585 u16 wsc_len; 2586 const u8 *pos; 2587 struct wpabuf msg; 2588 struct wps_parse_attr attr; 2589 u16 dev_pw_id; 2590 const u8 *bssid = NULL; 2591 int freq = 0; 2592 2593 wps = ndef_parse_wifi(data); 2594 if (wps == NULL) 2595 return -1; 2596 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 2597 "payload from NFC connection handover"); 2598 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 2599 if (wpabuf_len(wps) < 2) { 2600 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select " 2601 "Message"); 2602 goto out; 2603 } 2604 pos = wpabuf_head(wps); 2605 wsc_len = WPA_GET_BE16(pos); 2606 if (wsc_len > wpabuf_len(wps) - 2) { 2607 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 2608 "in Wi-Fi Handover Select Message", wsc_len); 2609 goto out; 2610 } 2611 pos += 2; 2612 2613 wpa_hexdump(MSG_DEBUG, 2614 "WPS: WSC attributes in Wi-Fi Handover Select Message", 2615 pos, wsc_len); 2616 if (wsc_len < wpabuf_len(wps) - 2) { 2617 wpa_hexdump(MSG_DEBUG, 2618 "WPS: Ignore extra data after WSC attributes", 2619 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 2620 } 2621 2622 wpabuf_set(&msg, pos, wsc_len); 2623 ret = wps_parse_msg(&msg, &attr); 2624 if (ret < 0) { 2625 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 2626 "Wi-Fi Handover Select Message"); 2627 goto out; 2628 } 2629 2630 if (attr.oob_dev_password == NULL || 2631 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 2632 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 2633 "included in Wi-Fi Handover Select Message"); 2634 ret = -1; 2635 goto out; 2636 } 2637 2638 if (attr.ssid == NULL) { 2639 wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover " 2640 "Select Message"); 2641 ret = -1; 2642 goto out; 2643 } 2644 2645 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len); 2646 2647 if (attr.mac_addr) { 2648 bssid = attr.mac_addr; 2649 wpa_printf(MSG_DEBUG, "WPS: MAC Address (BSSID): " MACSTR, 2650 MAC2STR(bssid)); 2651 } 2652 2653 if (attr.rf_bands) 2654 wpa_printf(MSG_DEBUG, "WPS: RF Bands: %d", *attr.rf_bands); 2655 2656 if (attr.ap_channel) { 2657 u16 chan = WPA_GET_BE16(attr.ap_channel); 2658 2659 wpa_printf(MSG_DEBUG, "WPS: AP Channel: %d", chan); 2660 2661 if (chan >= 1 && chan <= 13 && 2662 (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ)) 2663 freq = 2407 + 5 * chan; 2664 else if (chan == 14 && 2665 (attr.rf_bands == NULL || 2666 *attr.rf_bands & WPS_RF_24GHZ)) 2667 freq = 2484; 2668 else if (chan >= 30 && 2669 (attr.rf_bands == NULL || 2670 *attr.rf_bands & WPS_RF_50GHZ)) 2671 freq = 5000 + 5 * chan; 2672 else if (chan >= 1 && chan <= 4 && 2673 (attr.rf_bands == NULL || 2674 *attr.rf_bands & WPS_RF_60GHZ)) 2675 freq = 56160 + 2160 * chan; 2676 2677 if (freq) { 2678 wpa_printf(MSG_DEBUG, 2679 "WPS: AP indicated channel %u -> %u MHz", 2680 chan, freq); 2681 } 2682 } 2683 2684 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 2685 attr.oob_dev_password, attr.oob_dev_password_len); 2686 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 2687 WPS_OOB_PUBKEY_HASH_LEN); 2688 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 2689 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 2690 "%u in Wi-Fi Handover Select Message", dev_pw_id); 2691 ret = -1; 2692 goto out; 2693 } 2694 wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash", 2695 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 2696 2697 ret = wpas_wps_start_nfc(wpa_s, NULL, bssid, NULL, dev_pw_id, 0, 2698 attr.oob_dev_password, 2699 attr.ssid, attr.ssid_len, freq); 2700 2701 out: 2702 wpabuf_free(wps); 2703 return ret; 2704 } 2705 2706 2707 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s, 2708 const struct wpabuf *req, 2709 const struct wpabuf *sel) 2710 { 2711 wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported"); 2712 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req); 2713 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel); 2714 return wpas_wps_nfc_rx_handover_sel(wpa_s, sel); 2715 } 2716 2717 2718 int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s, 2719 const struct wpabuf *req, 2720 const struct wpabuf *sel) 2721 { 2722 struct wpabuf *wps; 2723 int ret = -1; 2724 u16 wsc_len; 2725 const u8 *pos; 2726 struct wpabuf msg; 2727 struct wps_parse_attr attr; 2728 u16 dev_pw_id; 2729 2730 /* 2731 * Enrollee/station is always initiator of the NFC connection handover, 2732 * so use the request message here to find Enrollee public key hash. 2733 */ 2734 wps = ndef_parse_wifi(req); 2735 if (wps == NULL) 2736 return -1; 2737 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 2738 "payload from NFC connection handover"); 2739 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 2740 if (wpabuf_len(wps) < 2) { 2741 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request " 2742 "Message"); 2743 goto out; 2744 } 2745 pos = wpabuf_head(wps); 2746 wsc_len = WPA_GET_BE16(pos); 2747 if (wsc_len > wpabuf_len(wps) - 2) { 2748 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 2749 "in rt Wi-Fi Handover Request Message", wsc_len); 2750 goto out; 2751 } 2752 pos += 2; 2753 2754 wpa_hexdump(MSG_DEBUG, 2755 "WPS: WSC attributes in Wi-Fi Handover Request Message", 2756 pos, wsc_len); 2757 if (wsc_len < wpabuf_len(wps) - 2) { 2758 wpa_hexdump(MSG_DEBUG, 2759 "WPS: Ignore extra data after WSC attributes", 2760 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 2761 } 2762 2763 wpabuf_set(&msg, pos, wsc_len); 2764 ret = wps_parse_msg(&msg, &attr); 2765 if (ret < 0) { 2766 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 2767 "Wi-Fi Handover Request Message"); 2768 goto out; 2769 } 2770 2771 if (attr.oob_dev_password == NULL || 2772 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 2773 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 2774 "included in Wi-Fi Handover Request Message"); 2775 ret = -1; 2776 goto out; 2777 } 2778 2779 if (attr.uuid_e == NULL) { 2780 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi " 2781 "Handover Request Message"); 2782 ret = -1; 2783 goto out; 2784 } 2785 2786 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN); 2787 2788 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 2789 attr.oob_dev_password, attr.oob_dev_password_len); 2790 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 2791 WPS_OOB_PUBKEY_HASH_LEN); 2792 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 2793 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 2794 "%u in Wi-Fi Handover Request Message", dev_pw_id); 2795 ret = -1; 2796 goto out; 2797 } 2798 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash", 2799 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 2800 2801 ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar, 2802 attr.oob_dev_password, 2803 DEV_PW_NFC_CONNECTION_HANDOVER, 2804 NULL, 0, 1); 2805 2806 out: 2807 wpabuf_free(wps); 2808 return ret; 2809 } 2810 2811 #endif /* CONFIG_WPS_NFC */ 2812 2813 2814 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s) 2815 { 2816 size_t i; 2817 struct os_reltime now; 2818 2819 if (wpa_debug_level > MSG_DEBUG) 2820 return; 2821 2822 if (wpa_s->wps_ap == NULL) 2823 return; 2824 2825 os_get_reltime(&now); 2826 2827 for (i = 0; i < wpa_s->num_wps_ap; i++) { 2828 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 2829 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid); 2830 2831 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d " 2832 "tries=%d last_attempt=%d sec ago blacklist=%d", 2833 (int) i, MAC2STR(ap->bssid), ap->type, ap->tries, 2834 ap->last_attempt.sec > 0 ? 2835 (int) now.sec - (int) ap->last_attempt.sec : -1, 2836 e ? e->count : 0); 2837 } 2838 } 2839 2840 2841 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s, 2842 const u8 *bssid) 2843 { 2844 size_t i; 2845 2846 if (wpa_s->wps_ap == NULL) 2847 return NULL; 2848 2849 for (i = 0; i < wpa_s->num_wps_ap; i++) { 2850 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 2851 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0) 2852 return ap; 2853 } 2854 2855 return NULL; 2856 } 2857 2858 2859 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s, 2860 struct wpa_scan_res *res) 2861 { 2862 struct wpabuf *wps; 2863 enum wps_ap_info_type type; 2864 struct wps_ap_info *ap; 2865 int r, pbc_active; 2866 const u8 *uuid; 2867 2868 if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL) 2869 return; 2870 2871 wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE); 2872 if (wps == NULL) 2873 return; 2874 2875 r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1); 2876 if (r == 2) 2877 type = WPS_AP_SEL_REG_OUR; 2878 else if (r == 1) 2879 type = WPS_AP_SEL_REG; 2880 else 2881 type = WPS_AP_NOT_SEL_REG; 2882 2883 uuid = wps_get_uuid_e(wps); 2884 pbc_active = wps_is_selected_pbc_registrar(wps); 2885 2886 ap = wpas_wps_get_ap_info(wpa_s, res->bssid); 2887 if (ap) { 2888 if (ap->type != type) { 2889 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR 2890 " changed type %d -> %d", 2891 MAC2STR(res->bssid), ap->type, type); 2892 ap->type = type; 2893 if (type != WPS_AP_NOT_SEL_REG) 2894 wpa_blacklist_del(wpa_s, ap->bssid); 2895 } 2896 ap->pbc_active = pbc_active; 2897 if (uuid) 2898 os_memcpy(ap->uuid, uuid, WPS_UUID_LEN); 2899 goto out; 2900 } 2901 2902 ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1, 2903 sizeof(struct wps_ap_info)); 2904 if (ap == NULL) 2905 goto out; 2906 2907 wpa_s->wps_ap = ap; 2908 ap = &wpa_s->wps_ap[wpa_s->num_wps_ap]; 2909 wpa_s->num_wps_ap++; 2910 2911 os_memset(ap, 0, sizeof(*ap)); 2912 os_memcpy(ap->bssid, res->bssid, ETH_ALEN); 2913 ap->type = type; 2914 ap->pbc_active = pbc_active; 2915 if (uuid) 2916 os_memcpy(ap->uuid, uuid, WPS_UUID_LEN); 2917 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added", 2918 MAC2STR(ap->bssid), ap->type); 2919 2920 out: 2921 wpabuf_free(wps); 2922 } 2923 2924 2925 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s, 2926 struct wpa_scan_results *scan_res) 2927 { 2928 size_t i; 2929 2930 for (i = 0; i < scan_res->num; i++) 2931 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]); 2932 2933 wpas_wps_dump_ap_info(wpa_s); 2934 } 2935 2936 2937 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid) 2938 { 2939 struct wps_ap_info *ap; 2940 2941 wpa_s->after_wps = 0; 2942 2943 if (!wpa_s->wps_ap_iter) 2944 return; 2945 ap = wpas_wps_get_ap_info(wpa_s, bssid); 2946 if (ap == NULL) 2947 return; 2948 ap->tries++; 2949 os_get_reltime(&ap->last_attempt); 2950 } 2951