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 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx); 43 static void wpas_clear_wps(struct wpa_supplicant *wpa_s); 44 45 46 static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s) 47 { 48 os_free(wpa_s->wps_ap); 49 wpa_s->wps_ap = NULL; 50 wpa_s->num_wps_ap = 0; 51 wpa_s->wps_ap_iter = 0; 52 } 53 54 55 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s) 56 { 57 #ifdef CONFIG_P2P 58 if (wpas_p2p_wps_eapol_cb(wpa_s) > 0) 59 return 1; 60 #endif /* CONFIG_P2P */ 61 62 if (!wpa_s->wps_success && 63 wpa_s->current_ssid && 64 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) { 65 const u8 *bssid = wpa_s->bssid; 66 if (is_zero_ether_addr(bssid)) 67 bssid = wpa_s->pending_bssid; 68 69 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR 70 " did not succeed - continue trying to find " 71 "suitable AP", MAC2STR(bssid)); 72 wpa_blacklist_add(wpa_s, bssid); 73 74 wpa_supplicant_deauthenticate(wpa_s, 75 WLAN_REASON_DEAUTH_LEAVING); 76 wpa_s->reassociate = 1; 77 wpa_supplicant_req_scan(wpa_s, 78 wpa_s->blacklist_cleared ? 5 : 0, 0); 79 wpa_s->blacklist_cleared = 0; 80 return 1; 81 } 82 83 wpas_wps_clear_ap_info(wpa_s); 84 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 85 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success) 86 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL); 87 88 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid && 89 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 90 int disabled = wpa_s->current_ssid->disabled; 91 unsigned int freq = wpa_s->assoc_freq; 92 struct wpa_bss *bss; 93 struct wpa_ssid *ssid = NULL; 94 int use_fast_assoc = 0; 95 96 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - " 97 "try to associate with the received credential " 98 "(freq=%u)", freq); 99 wpa_supplicant_deauthenticate(wpa_s, 100 WLAN_REASON_DEAUTH_LEAVING); 101 if (disabled) { 102 wpa_printf(MSG_DEBUG, "WPS: Current network is " 103 "disabled - wait for user to enable"); 104 return 1; 105 } 106 wpa_s->after_wps = 5; 107 wpa_s->wps_freq = freq; 108 wpa_s->normal_scans = 0; 109 wpa_s->reassociate = 1; 110 111 wpa_printf(MSG_DEBUG, "WPS: Checking whether fast association " 112 "without a new scan can be used"); 113 bss = wpa_supplicant_pick_network(wpa_s, &ssid); 114 if (bss) { 115 struct wpabuf *wps; 116 struct wps_parse_attr attr; 117 118 wps = wpa_bss_get_vendor_ie_multi(bss, 119 WPS_IE_VENDOR_TYPE); 120 if (wps && wps_parse_msg(wps, &attr) == 0 && 121 attr.wps_state && 122 *attr.wps_state == WPS_STATE_CONFIGURED) 123 use_fast_assoc = 1; 124 wpabuf_free(wps); 125 } 126 127 if (!use_fast_assoc || 128 wpa_supplicant_fast_associate(wpa_s) != 1) 129 wpa_supplicant_req_scan(wpa_s, 0, 0); 130 return 1; 131 } 132 133 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) { 134 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting " 135 "for external credential processing"); 136 wpas_clear_wps(wpa_s); 137 wpa_supplicant_deauthenticate(wpa_s, 138 WLAN_REASON_DEAUTH_LEAVING); 139 return 1; 140 } 141 142 return 0; 143 } 144 145 146 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s, 147 struct wpa_ssid *ssid, 148 const struct wps_credential *cred) 149 { 150 struct wpa_driver_capa capa; 151 struct wpa_bss *bss; 152 const u8 *ie; 153 struct wpa_ie_data adv; 154 int wpa2 = 0, ccmp = 0; 155 156 /* 157 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in 158 * case they are configured for mixed mode operation (WPA+WPA2 and 159 * TKIP+CCMP). Try to use scan results to figure out whether the AP 160 * actually supports stronger security and select that if the client 161 * has support for it, too. 162 */ 163 164 if (wpa_drv_get_capa(wpa_s, &capa)) 165 return; /* Unknown what driver supports */ 166 167 if (ssid->ssid == NULL) 168 return; 169 bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len); 170 if (bss == NULL) { 171 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS " 172 "table - use credential as-is"); 173 return; 174 } 175 176 wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table"); 177 178 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 179 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) { 180 wpa2 = 1; 181 if (adv.pairwise_cipher & WPA_CIPHER_CCMP) 182 ccmp = 1; 183 } else { 184 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 185 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 && 186 adv.pairwise_cipher & WPA_CIPHER_CCMP) 187 ccmp = 1; 188 } 189 190 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) && 191 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) { 192 /* 193 * TODO: This could be the initial AP configuration and the 194 * Beacon contents could change shortly. Should request a new 195 * scan and delay addition of the network until the updated 196 * scan results are available. 197 */ 198 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA " 199 "support - use credential as-is"); 200 return; 201 } 202 203 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) && 204 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) && 205 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) { 206 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential " 207 "based on scan results"); 208 if (wpa_s->conf->ap_scan == 1) 209 ssid->pairwise_cipher |= WPA_CIPHER_CCMP; 210 else 211 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 212 } 213 214 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) && 215 (ssid->proto & WPA_PROTO_WPA) && 216 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) { 217 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential " 218 "based on scan results"); 219 if (wpa_s->conf->ap_scan == 1) 220 ssid->proto |= WPA_PROTO_RSN; 221 else 222 ssid->proto = WPA_PROTO_RSN; 223 } 224 } 225 226 227 static void wpas_wps_remove_dup_network(struct wpa_supplicant *wpa_s, 228 struct wpa_ssid *new_ssid) 229 { 230 struct wpa_ssid *ssid, *next; 231 232 for (ssid = wpa_s->conf->ssid, next = ssid ? ssid->next : NULL; ssid; 233 ssid = next, next = ssid ? ssid->next : NULL) { 234 /* 235 * new_ssid has already been added to the list in 236 * wpas_wps_add_network(), so skip it. 237 */ 238 if (ssid == new_ssid) 239 continue; 240 241 if (ssid->bssid_set || new_ssid->bssid_set) { 242 if (ssid->bssid_set != new_ssid->bssid_set) 243 continue; 244 if (os_memcmp(ssid->bssid, new_ssid->bssid, ETH_ALEN) != 245 0) 246 continue; 247 } 248 249 /* compare SSID */ 250 if (ssid->ssid_len == 0 || ssid->ssid_len != new_ssid->ssid_len) 251 continue; 252 253 if (ssid->ssid && new_ssid->ssid) { 254 if (os_memcmp(ssid->ssid, new_ssid->ssid, 255 ssid->ssid_len) != 0) 256 continue; 257 } else if (ssid->ssid || new_ssid->ssid) 258 continue; 259 260 /* compare security parameters */ 261 if (ssid->auth_alg != new_ssid->auth_alg || 262 ssid->key_mgmt != new_ssid->key_mgmt || 263 ssid->proto != new_ssid->proto || 264 ssid->pairwise_cipher != new_ssid->pairwise_cipher || 265 ssid->group_cipher != new_ssid->group_cipher) 266 continue; 267 268 /* Remove the duplicated older network entry. */ 269 wpa_printf(MSG_DEBUG, "Remove duplicate network %d", ssid->id); 270 wpas_notify_network_removed(wpa_s, ssid); 271 wpa_config_remove_network(wpa_s->conf, ssid->id); 272 } 273 } 274 275 276 static int wpa_supplicant_wps_cred(void *ctx, 277 const struct wps_credential *cred) 278 { 279 struct wpa_supplicant *wpa_s = ctx; 280 struct wpa_ssid *ssid = wpa_s->current_ssid; 281 u8 key_idx = 0; 282 u16 auth_type; 283 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 284 int registrar = 0; 285 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 286 287 if ((wpa_s->conf->wps_cred_processing == 1 || 288 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) { 289 size_t blen = cred->cred_attr_len * 2 + 1; 290 char *buf = os_malloc(blen); 291 if (buf) { 292 wpa_snprintf_hex(buf, blen, 293 cred->cred_attr, cred->cred_attr_len); 294 wpa_msg(wpa_s, MSG_INFO, "%s%s", 295 WPS_EVENT_CRED_RECEIVED, buf); 296 os_free(buf); 297 } 298 299 wpas_notify_wps_credential(wpa_s, cred); 300 } else 301 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED); 302 303 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", 304 cred->cred_attr, cred->cred_attr_len); 305 306 if (wpa_s->conf->wps_cred_processing == 1) 307 return 0; 308 309 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); 310 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", 311 cred->auth_type); 312 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); 313 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); 314 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", 315 cred->key, cred->key_len); 316 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, 317 MAC2STR(cred->mac_addr)); 318 319 auth_type = cred->auth_type; 320 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { 321 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode " 322 "auth_type into WPA2PSK"); 323 auth_type = WPS_AUTH_WPA2PSK; 324 } 325 326 if (auth_type != WPS_AUTH_OPEN && 327 auth_type != WPS_AUTH_SHARED && 328 auth_type != WPS_AUTH_WPAPSK && 329 auth_type != WPS_AUTH_WPA2PSK) { 330 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for " 331 "unsupported authentication type 0x%x", 332 auth_type); 333 return 0; 334 } 335 336 if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) { 337 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) { 338 wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with " 339 "invalid Network Key length %lu", 340 (unsigned long) cred->key_len); 341 return -1; 342 } 343 } 344 345 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 346 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based " 347 "on the received credential"); 348 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 349 if (ssid->eap.identity && 350 ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN && 351 os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR, 352 WSC_ID_REGISTRAR_LEN) == 0) 353 registrar = 1; 354 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 355 os_free(ssid->eap.identity); 356 ssid->eap.identity = NULL; 357 ssid->eap.identity_len = 0; 358 os_free(ssid->eap.phase1); 359 ssid->eap.phase1 = NULL; 360 os_free(ssid->eap.eap_methods); 361 ssid->eap.eap_methods = NULL; 362 if (!ssid->p2p_group) { 363 ssid->temporary = 0; 364 ssid->bssid_set = 0; 365 } 366 ssid->disabled_until.sec = 0; 367 ssid->disabled_until.usec = 0; 368 ssid->auth_failures = 0; 369 } else { 370 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the " 371 "received credential"); 372 ssid = wpa_config_add_network(wpa_s->conf); 373 if (ssid == NULL) 374 return -1; 375 wpas_notify_network_added(wpa_s, ssid); 376 } 377 378 wpa_config_set_network_defaults(ssid); 379 380 os_free(ssid->ssid); 381 ssid->ssid = os_malloc(cred->ssid_len); 382 if (ssid->ssid) { 383 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len); 384 ssid->ssid_len = cred->ssid_len; 385 } 386 387 switch (cred->encr_type) { 388 case WPS_ENCR_NONE: 389 break; 390 case WPS_ENCR_WEP: 391 if (cred->key_len <= 0) 392 break; 393 if (cred->key_len != 5 && cred->key_len != 13 && 394 cred->key_len != 10 && cred->key_len != 26) { 395 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length " 396 "%lu", (unsigned long) cred->key_len); 397 return -1; 398 } 399 if (cred->key_idx > NUM_WEP_KEYS) { 400 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d", 401 cred->key_idx); 402 return -1; 403 } 404 if (cred->key_idx) 405 key_idx = cred->key_idx - 1; 406 if (cred->key_len == 10 || cred->key_len == 26) { 407 if (hexstr2bin((char *) cred->key, 408 ssid->wep_key[key_idx], 409 cred->key_len / 2) < 0) { 410 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key " 411 "%d", key_idx); 412 return -1; 413 } 414 ssid->wep_key_len[key_idx] = cred->key_len / 2; 415 } else { 416 os_memcpy(ssid->wep_key[key_idx], cred->key, 417 cred->key_len); 418 ssid->wep_key_len[key_idx] = cred->key_len; 419 } 420 ssid->wep_tx_keyidx = key_idx; 421 break; 422 case WPS_ENCR_TKIP: 423 ssid->pairwise_cipher = WPA_CIPHER_TKIP; 424 break; 425 case WPS_ENCR_AES: 426 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 427 break; 428 } 429 430 switch (auth_type) { 431 case WPS_AUTH_OPEN: 432 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 433 ssid->key_mgmt = WPA_KEY_MGMT_NONE; 434 ssid->proto = 0; 435 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 436 if (registrar) { 437 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK 438 "id=%d - Credentials for an open " 439 "network disabled by default - use " 440 "'select_network %d' to enable", 441 ssid->id, ssid->id); 442 ssid->disabled = 1; 443 } 444 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 445 break; 446 case WPS_AUTH_SHARED: 447 ssid->auth_alg = WPA_AUTH_ALG_SHARED; 448 ssid->key_mgmt = WPA_KEY_MGMT_NONE; 449 ssid->proto = 0; 450 break; 451 case WPS_AUTH_WPAPSK: 452 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 453 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 454 ssid->proto = WPA_PROTO_WPA; 455 break; 456 case WPS_AUTH_WPA2PSK: 457 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 458 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 459 ssid->proto = WPA_PROTO_RSN; 460 break; 461 } 462 463 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) { 464 if (cred->key_len == 2 * PMK_LEN) { 465 if (hexstr2bin((const char *) cred->key, ssid->psk, 466 PMK_LEN)) { 467 wpa_printf(MSG_ERROR, "WPS: Invalid Network " 468 "Key"); 469 return -1; 470 } 471 ssid->psk_set = 1; 472 ssid->export_keys = 1; 473 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) { 474 os_free(ssid->passphrase); 475 ssid->passphrase = os_malloc(cred->key_len + 1); 476 if (ssid->passphrase == NULL) 477 return -1; 478 os_memcpy(ssid->passphrase, cred->key, cred->key_len); 479 ssid->passphrase[cred->key_len] = '\0'; 480 wpa_config_update_psk(ssid); 481 ssid->export_keys = 1; 482 } else { 483 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key " 484 "length %lu", 485 (unsigned long) cred->key_len); 486 return -1; 487 } 488 } 489 490 wpas_wps_security_workaround(wpa_s, ssid, cred); 491 492 if (cred->ap_channel) 493 wpa_s->wps_ap_channel = cred->ap_channel; 494 495 wpas_wps_remove_dup_network(wpa_s, ssid); 496 497 #ifndef CONFIG_NO_CONFIG_WRITE 498 if (wpa_s->conf->update_config && 499 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 500 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration"); 501 return -1; 502 } 503 #endif /* CONFIG_NO_CONFIG_WRITE */ 504 505 /* 506 * Optimize the post-WPS scan based on the channel used during 507 * the provisioning in case EAP-Failure is not received. 508 */ 509 wpa_s->after_wps = 5; 510 wpa_s->wps_freq = wpa_s->assoc_freq; 511 512 return 0; 513 } 514 515 516 #ifdef CONFIG_P2P 517 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) 518 { 519 struct wpa_supplicant *wpa_s = eloop_ctx; 520 wpas_p2p_notif_pbc_overlap(wpa_s); 521 } 522 #endif /* CONFIG_P2P */ 523 524 525 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s, 526 struct wps_event_m2d *m2d) 527 { 528 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D 529 "dev_password_id=%d config_error=%d", 530 m2d->dev_password_id, m2d->config_error); 531 wpas_notify_wps_event_m2d(wpa_s, m2d); 532 #ifdef CONFIG_P2P 533 if (wpa_s->parent && wpa_s->parent != wpa_s) { 534 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D 535 "dev_password_id=%d config_error=%d", 536 m2d->dev_password_id, m2d->config_error); 537 } 538 if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) { 539 /* 540 * Notify P2P from eloop timeout to avoid issues with the 541 * interface getting removed while processing a message. 542 */ 543 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s, 544 NULL); 545 } 546 #endif /* CONFIG_P2P */ 547 } 548 549 550 static void wpas_wps_clear_timeout(void *eloop_ctx, void *timeout_ctx) 551 { 552 struct wpa_supplicant *wpa_s = eloop_ctx; 553 wpa_printf(MSG_DEBUG, "WPS: Clear WPS network from timeout"); 554 wpas_clear_wps(wpa_s); 555 } 556 557 558 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s, 559 struct wps_event_fail *fail) 560 { 561 if (fail->error_indication > 0 && 562 fail->error_indication < NUM_WPS_EI_VALUES) { 563 wpa_msg(wpa_s, MSG_INFO, 564 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 565 fail->msg, fail->config_error, fail->error_indication, 566 wps_ei_str(fail->error_indication)); 567 if (wpa_s->parent && wpa_s->parent != wpa_s) 568 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL 569 "msg=%d config_error=%d reason=%d (%s)", 570 fail->msg, fail->config_error, 571 fail->error_indication, 572 wps_ei_str(fail->error_indication)); 573 } else { 574 wpa_msg(wpa_s, MSG_INFO, 575 WPS_EVENT_FAIL "msg=%d config_error=%d", 576 fail->msg, fail->config_error); 577 if (wpa_s->parent && wpa_s->parent != wpa_s) 578 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL 579 "msg=%d config_error=%d", 580 fail->msg, fail->config_error); 581 } 582 583 /* 584 * Need to allow WPS processing to complete, e.g., by sending WSC_NACK. 585 */ 586 wpa_printf(MSG_DEBUG, "WPS: Register timeout to clear WPS network"); 587 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL); 588 eloop_register_timeout(0, 100000, wpas_wps_clear_timeout, wpa_s, NULL); 589 590 wpas_notify_wps_event_fail(wpa_s, fail); 591 #ifdef CONFIG_P2P 592 wpas_p2p_wps_failed(wpa_s, fail); 593 #endif /* CONFIG_P2P */ 594 } 595 596 597 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx); 598 599 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s) 600 { 601 struct wpa_ssid *ssid; 602 int changed = 0; 603 604 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL); 605 606 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 607 if (ssid->disabled_for_connect && ssid->disabled) { 608 ssid->disabled_for_connect = 0; 609 ssid->disabled = 0; 610 wpas_notify_network_enabled_changed(wpa_s, ssid); 611 changed++; 612 } 613 } 614 615 if (changed) { 616 #ifndef CONFIG_NO_CONFIG_WRITE 617 if (wpa_s->conf->update_config && 618 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 619 wpa_printf(MSG_DEBUG, "WPS: Failed to update " 620 "configuration"); 621 } 622 #endif /* CONFIG_NO_CONFIG_WRITE */ 623 } 624 } 625 626 627 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx) 628 { 629 struct wpa_supplicant *wpa_s = eloop_ctx; 630 /* Enable the networks disabled during wpas_wps_reassoc */ 631 wpas_wps_reenable_networks(wpa_s); 632 } 633 634 635 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s) 636 { 637 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS); 638 wpa_s->wps_success = 1; 639 wpas_notify_wps_event_success(wpa_s); 640 if (wpa_s->current_ssid) 641 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1); 642 wpa_s->extra_blacklist_count = 0; 643 644 /* 645 * Enable the networks disabled during wpas_wps_reassoc after 10 646 * seconds. The 10 seconds timer is to allow the data connection to be 647 * formed before allowing other networks to be selected. 648 */ 649 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s, 650 NULL); 651 652 #ifdef CONFIG_P2P 653 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0); 654 #endif /* CONFIG_P2P */ 655 } 656 657 658 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s, 659 struct wps_event_er_ap *ap) 660 { 661 char uuid_str[100]; 662 char dev_type[WPS_DEV_TYPE_BUFSIZE]; 663 664 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); 665 if (ap->pri_dev_type) 666 wps_dev_type_bin2str(ap->pri_dev_type, dev_type, 667 sizeof(dev_type)); 668 else 669 dev_type[0] = '\0'; 670 671 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR 672 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|", 673 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state, 674 ap->friendly_name ? ap->friendly_name : "", 675 ap->manufacturer ? ap->manufacturer : "", 676 ap->model_description ? ap->model_description : "", 677 ap->model_name ? ap->model_name : "", 678 ap->manufacturer_url ? ap->manufacturer_url : "", 679 ap->model_url ? ap->model_url : ""); 680 } 681 682 683 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s, 684 struct wps_event_er_ap *ap) 685 { 686 char uuid_str[100]; 687 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); 688 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str); 689 } 690 691 692 static void wpa_supplicant_wps_event_er_enrollee_add( 693 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) 694 { 695 char uuid_str[100]; 696 char dev_type[WPS_DEV_TYPE_BUFSIZE]; 697 698 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); 699 if (enrollee->pri_dev_type) 700 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type, 701 sizeof(dev_type)); 702 else 703 dev_type[0] = '\0'; 704 705 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR 706 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s " 707 "|%s|%s|%s|%s|%s|", 708 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received, 709 enrollee->config_methods, enrollee->dev_passwd_id, dev_type, 710 enrollee->dev_name ? enrollee->dev_name : "", 711 enrollee->manufacturer ? enrollee->manufacturer : "", 712 enrollee->model_name ? enrollee->model_name : "", 713 enrollee->model_number ? enrollee->model_number : "", 714 enrollee->serial_number ? enrollee->serial_number : ""); 715 } 716 717 718 static void wpa_supplicant_wps_event_er_enrollee_remove( 719 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) 720 { 721 char uuid_str[100]; 722 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); 723 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR, 724 uuid_str, MAC2STR(enrollee->mac_addr)); 725 } 726 727 728 static void wpa_supplicant_wps_event_er_ap_settings( 729 struct wpa_supplicant *wpa_s, 730 struct wps_event_er_ap_settings *ap_settings) 731 { 732 char uuid_str[100]; 733 char key_str[65]; 734 const struct wps_credential *cred = ap_settings->cred; 735 736 key_str[0] = '\0'; 737 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { 738 if (cred->key_len >= 8 && cred->key_len <= 64) { 739 os_memcpy(key_str, cred->key, cred->key_len); 740 key_str[cred->key_len] = '\0'; 741 } 742 } 743 744 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str)); 745 /* Use wpa_msg_ctrl to avoid showing the key in debug log */ 746 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS 747 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x " 748 "key=%s", 749 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len), 750 cred->auth_type, cred->encr_type, key_str); 751 } 752 753 754 static void wpa_supplicant_wps_event_er_set_sel_reg( 755 struct wpa_supplicant *wpa_s, 756 struct wps_event_er_set_selected_registrar *ev) 757 { 758 char uuid_str[100]; 759 760 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str)); 761 switch (ev->state) { 762 case WPS_ER_SET_SEL_REG_START: 763 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG 764 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u " 765 "sel_reg_config_methods=0x%x", 766 uuid_str, ev->sel_reg, ev->dev_passwd_id, 767 ev->sel_reg_config_methods); 768 break; 769 case WPS_ER_SET_SEL_REG_DONE: 770 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG 771 "uuid=%s state=DONE", uuid_str); 772 break; 773 case WPS_ER_SET_SEL_REG_FAILED: 774 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG 775 "uuid=%s state=FAILED", uuid_str); 776 break; 777 } 778 } 779 780 781 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event, 782 union wps_event_data *data) 783 { 784 struct wpa_supplicant *wpa_s = ctx; 785 switch (event) { 786 case WPS_EV_M2D: 787 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d); 788 break; 789 case WPS_EV_FAIL: 790 wpa_supplicant_wps_event_fail(wpa_s, &data->fail); 791 break; 792 case WPS_EV_SUCCESS: 793 wpa_supplicant_wps_event_success(wpa_s); 794 break; 795 case WPS_EV_PWD_AUTH_FAIL: 796 #ifdef CONFIG_AP 797 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee) 798 wpa_supplicant_ap_pwd_auth_fail(wpa_s); 799 #endif /* CONFIG_AP */ 800 break; 801 case WPS_EV_PBC_OVERLAP: 802 break; 803 case WPS_EV_PBC_TIMEOUT: 804 break; 805 case WPS_EV_PBC_ACTIVE: 806 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE); 807 break; 808 case WPS_EV_PBC_DISABLE: 809 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE); 810 break; 811 case WPS_EV_ER_AP_ADD: 812 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap); 813 break; 814 case WPS_EV_ER_AP_REMOVE: 815 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap); 816 break; 817 case WPS_EV_ER_ENROLLEE_ADD: 818 wpa_supplicant_wps_event_er_enrollee_add(wpa_s, 819 &data->enrollee); 820 break; 821 case WPS_EV_ER_ENROLLEE_REMOVE: 822 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s, 823 &data->enrollee); 824 break; 825 case WPS_EV_ER_AP_SETTINGS: 826 wpa_supplicant_wps_event_er_ap_settings(wpa_s, 827 &data->ap_settings); 828 break; 829 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 830 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s, 831 &data->set_sel_reg); 832 break; 833 case WPS_EV_AP_PIN_SUCCESS: 834 break; 835 } 836 } 837 838 839 static int wpa_supplicant_wps_rf_band(void *ctx) 840 { 841 struct wpa_supplicant *wpa_s = ctx; 842 843 if (!wpa_s->current_ssid || !wpa_s->assoc_freq) 844 return 0; 845 846 return (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ; 847 } 848 849 850 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid) 851 { 852 if (eap_is_wps_pbc_enrollee(&ssid->eap) || 853 eap_is_wps_pin_enrollee(&ssid->eap)) 854 return WPS_REQ_ENROLLEE; 855 else 856 return WPS_REQ_REGISTRAR; 857 } 858 859 860 static void wpas_clear_wps(struct wpa_supplicant *wpa_s) 861 { 862 int id; 863 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current; 864 865 wpa_s->after_wps = 0; 866 wpa_s->known_wps_freq = 0; 867 868 prev_current = wpa_s->current_ssid; 869 870 /* Enable the networks disabled during wpas_wps_reassoc */ 871 wpas_wps_reenable_networks(wpa_s); 872 873 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 874 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL); 875 876 /* Remove any existing WPS network from configuration */ 877 ssid = wpa_s->conf->ssid; 878 while (ssid) { 879 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 880 if (ssid == wpa_s->current_ssid) { 881 wpa_supplicant_deauthenticate( 882 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 883 } 884 id = ssid->id; 885 remove_ssid = ssid; 886 } else 887 id = -1; 888 ssid = ssid->next; 889 if (id >= 0) { 890 if (prev_current == remove_ssid) { 891 wpa_sm_set_config(wpa_s->wpa, NULL); 892 eapol_sm_notify_config(wpa_s->eapol, NULL, 893 NULL); 894 } 895 wpas_notify_network_removed(wpa_s, remove_ssid); 896 wpa_config_remove_network(wpa_s->conf, id); 897 } 898 } 899 900 wpas_wps_clear_ap_info(wpa_s); 901 } 902 903 904 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx) 905 { 906 struct wpa_supplicant *wpa_s = eloop_ctx; 907 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed " 908 "out"); 909 wpas_clear_wps(wpa_s); 910 } 911 912 913 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s, 914 int registrar, const u8 *dev_addr, 915 const u8 *bssid) 916 { 917 struct wpa_ssid *ssid; 918 919 ssid = wpa_config_add_network(wpa_s->conf); 920 if (ssid == NULL) 921 return NULL; 922 wpas_notify_network_added(wpa_s, ssid); 923 wpa_config_set_network_defaults(ssid); 924 ssid->temporary = 1; 925 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 || 926 wpa_config_set(ssid, "eap", "WSC", 0) < 0 || 927 wpa_config_set(ssid, "identity", registrar ? 928 "\"" WSC_ID_REGISTRAR "\"" : 929 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) { 930 wpas_notify_network_removed(wpa_s, ssid); 931 wpa_config_remove_network(wpa_s->conf, ssid->id); 932 return NULL; 933 } 934 935 #ifdef CONFIG_P2P 936 if (dev_addr) 937 os_memcpy(ssid->go_p2p_dev_addr, dev_addr, ETH_ALEN); 938 #endif /* CONFIG_P2P */ 939 940 if (bssid) { 941 #ifndef CONFIG_P2P 942 struct wpa_bss *bss; 943 int count = 0; 944 #endif /* CONFIG_P2P */ 945 946 os_memcpy(ssid->bssid, bssid, ETH_ALEN); 947 ssid->bssid_set = 1; 948 949 /* 950 * Note: With P2P, the SSID may change at the time the WPS 951 * provisioning is started, so better not filter the AP based 952 * on the current SSID in the scan results. 953 */ 954 #ifndef CONFIG_P2P 955 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 956 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0) 957 continue; 958 959 os_free(ssid->ssid); 960 ssid->ssid = os_malloc(bss->ssid_len); 961 if (ssid->ssid == NULL) 962 break; 963 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 964 ssid->ssid_len = bss->ssid_len; 965 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from " 966 "scan results", 967 ssid->ssid, ssid->ssid_len); 968 count++; 969 } 970 971 if (count > 1) { 972 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found " 973 "for the AP; use wildcard"); 974 os_free(ssid->ssid); 975 ssid->ssid = NULL; 976 ssid->ssid_len = 0; 977 } 978 #endif /* CONFIG_P2P */ 979 } 980 981 return ssid; 982 } 983 984 985 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s, 986 struct wpa_ssid *selected) 987 { 988 struct wpa_ssid *ssid; 989 990 if (wpa_s->current_ssid) 991 wpa_supplicant_deauthenticate( 992 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 993 994 /* Mark all other networks disabled and trigger reassociation */ 995 ssid = wpa_s->conf->ssid; 996 while (ssid) { 997 int was_disabled = ssid->disabled; 998 ssid->disabled_for_connect = 0; 999 /* 1000 * In case the network object corresponds to a persistent group 1001 * then do not send out network disabled signal. In addition, 1002 * do not change disabled status of persistent network objects 1003 * from 2 to 1 should we connect to another network. 1004 */ 1005 if (was_disabled != 2) { 1006 ssid->disabled = ssid != selected; 1007 if (was_disabled != ssid->disabled) { 1008 if (ssid->disabled) 1009 ssid->disabled_for_connect = 1; 1010 wpas_notify_network_enabled_changed(wpa_s, 1011 ssid); 1012 } 1013 } 1014 ssid = ssid->next; 1015 } 1016 } 1017 1018 1019 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s, 1020 struct wpa_ssid *selected, const u8 *bssid, 1021 int freq) 1022 { 1023 struct wpa_bss *bss; 1024 1025 wpa_s->after_wps = 0; 1026 wpa_s->known_wps_freq = 0; 1027 if (freq) { 1028 wpa_s->after_wps = 5; 1029 wpa_s->wps_freq = freq; 1030 } else if (bssid) { 1031 bss = wpa_bss_get_bssid_latest(wpa_s, bssid); 1032 if (bss && bss->freq > 0) { 1033 wpa_s->known_wps_freq = 1; 1034 wpa_s->wps_freq = bss->freq; 1035 } 1036 } 1037 1038 wpas_wps_temp_disable(wpa_s, selected); 1039 1040 wpa_s->disconnected = 0; 1041 wpa_s->reassociate = 1; 1042 wpa_s->scan_runs = 0; 1043 wpa_s->normal_scans = 0; 1044 wpa_s->wps_success = 0; 1045 wpa_s->blacklist_cleared = 0; 1046 1047 wpa_supplicant_cancel_sched_scan(wpa_s); 1048 wpa_supplicant_req_scan(wpa_s, 0, 0); 1049 } 1050 1051 1052 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid, 1053 int p2p_group) 1054 { 1055 struct wpa_ssid *ssid; 1056 wpas_clear_wps(wpa_s); 1057 ssid = wpas_wps_add_network(wpa_s, 0, NULL, bssid); 1058 if (ssid == NULL) 1059 return -1; 1060 ssid->temporary = 1; 1061 ssid->p2p_group = p2p_group; 1062 #ifdef CONFIG_P2P 1063 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { 1064 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); 1065 if (ssid->ssid) { 1066 ssid->ssid_len = wpa_s->go_params->ssid_len; 1067 os_memcpy(ssid->ssid, wpa_s->go_params->ssid, 1068 ssid->ssid_len); 1069 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " 1070 "SSID", ssid->ssid, ssid->ssid_len); 1071 } 1072 } 1073 #endif /* CONFIG_P2P */ 1074 if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0) 1075 return -1; 1076 if (wpa_s->wps_fragment_size) 1077 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 1078 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 1079 wpa_s, NULL); 1080 wpas_wps_reassoc(wpa_s, ssid, bssid, 0); 1081 return 0; 1082 } 1083 1084 1085 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s, 1086 const u8 *dev_addr, const u8 *bssid, 1087 const char *pin, int p2p_group, u16 dev_pw_id, 1088 const u8 *peer_pubkey_hash, 1089 const u8 *ssid_val, size_t ssid_len, int freq) 1090 { 1091 struct wpa_ssid *ssid; 1092 char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN]; 1093 unsigned int rpin = 0; 1094 char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10]; 1095 1096 wpas_clear_wps(wpa_s); 1097 if (bssid && is_zero_ether_addr(bssid)) 1098 bssid = NULL; 1099 ssid = wpas_wps_add_network(wpa_s, 0, dev_addr, bssid); 1100 if (ssid == NULL) { 1101 wpa_printf(MSG_DEBUG, "WPS: Could not add network"); 1102 return -1; 1103 } 1104 ssid->temporary = 1; 1105 ssid->p2p_group = p2p_group; 1106 if (ssid_val) { 1107 ssid->ssid = os_malloc(ssid_len); 1108 if (ssid->ssid) { 1109 os_memcpy(ssid->ssid, ssid_val, ssid_len); 1110 ssid->ssid_len = ssid_len; 1111 } 1112 } 1113 if (peer_pubkey_hash) { 1114 os_memcpy(hash, " pkhash=", 8); 1115 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8, 1116 peer_pubkey_hash, 1117 WPS_OOB_PUBKEY_HASH_LEN); 1118 } else { 1119 hash[0] = '\0'; 1120 } 1121 #ifdef CONFIG_P2P 1122 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { 1123 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); 1124 if (ssid->ssid) { 1125 ssid->ssid_len = wpa_s->go_params->ssid_len; 1126 os_memcpy(ssid->ssid, wpa_s->go_params->ssid, 1127 ssid->ssid_len); 1128 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " 1129 "SSID", ssid->ssid, ssid->ssid_len); 1130 } 1131 } 1132 #endif /* CONFIG_P2P */ 1133 if (pin) 1134 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"", 1135 pin, dev_pw_id, hash); 1136 else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) { 1137 os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"", 1138 dev_pw_id, hash); 1139 } else { 1140 rpin = wps_generate_pin(); 1141 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"", 1142 rpin, dev_pw_id, hash); 1143 } 1144 if (wpa_config_set(ssid, "phase1", val, 0) < 0) { 1145 wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val); 1146 return -1; 1147 } 1148 if (wpa_s->wps_fragment_size) 1149 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 1150 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 1151 wpa_s, NULL); 1152 wpa_s->wps_ap_iter = 1; 1153 wpas_wps_reassoc(wpa_s, ssid, bssid, freq); 1154 return rpin; 1155 } 1156 1157 1158 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid, 1159 const char *pin, int p2p_group, u16 dev_pw_id) 1160 { 1161 return wpas_wps_start_dev_pw(wpa_s, NULL, bssid, pin, p2p_group, 1162 dev_pw_id, NULL, NULL, 0, 0); 1163 } 1164 1165 1166 /* Cancel the wps pbc/pin requests */ 1167 int wpas_wps_cancel(struct wpa_supplicant *wpa_s) 1168 { 1169 #ifdef CONFIG_AP 1170 if (wpa_s->ap_iface) { 1171 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode"); 1172 return wpa_supplicant_ap_wps_cancel(wpa_s); 1173 } 1174 #endif /* CONFIG_AP */ 1175 1176 if (wpa_s->wpa_state == WPA_SCANNING || 1177 wpa_s->wpa_state == WPA_DISCONNECTED) { 1178 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan"); 1179 wpa_supplicant_cancel_scan(wpa_s); 1180 wpas_clear_wps(wpa_s); 1181 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) { 1182 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - " 1183 "deauthenticate"); 1184 wpa_supplicant_deauthenticate(wpa_s, 1185 WLAN_REASON_DEAUTH_LEAVING); 1186 wpas_clear_wps(wpa_s); 1187 } else { 1188 wpas_wps_reenable_networks(wpa_s); 1189 wpas_wps_clear_ap_info(wpa_s); 1190 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) > 1191 0) 1192 wpas_clear_wps(wpa_s); 1193 } 1194 1195 wpa_s->after_wps = 0; 1196 1197 return 0; 1198 } 1199 1200 1201 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid, 1202 const char *pin, struct wps_new_ap_settings *settings) 1203 { 1204 struct wpa_ssid *ssid; 1205 char val[200]; 1206 char *pos, *end; 1207 int res; 1208 1209 if (!pin) 1210 return -1; 1211 wpas_clear_wps(wpa_s); 1212 ssid = wpas_wps_add_network(wpa_s, 1, NULL, bssid); 1213 if (ssid == NULL) 1214 return -1; 1215 ssid->temporary = 1; 1216 pos = val; 1217 end = pos + sizeof(val); 1218 res = os_snprintf(pos, end - pos, "\"pin=%s", pin); 1219 if (res < 0 || res >= end - pos) 1220 return -1; 1221 pos += res; 1222 if (settings) { 1223 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s " 1224 "new_encr=%s new_key=%s", 1225 settings->ssid_hex, settings->auth, 1226 settings->encr, settings->key_hex); 1227 if (res < 0 || res >= end - pos) 1228 return -1; 1229 pos += res; 1230 } 1231 res = os_snprintf(pos, end - pos, "\""); 1232 if (res < 0 || res >= end - pos) 1233 return -1; 1234 if (wpa_config_set(ssid, "phase1", val, 0) < 0) 1235 return -1; 1236 if (wpa_s->wps_fragment_size) 1237 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 1238 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 1239 wpa_s, NULL); 1240 wpas_wps_reassoc(wpa_s, ssid, bssid, 0); 1241 return 0; 1242 } 1243 1244 1245 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, 1246 const u8 *p2p_dev_addr, const u8 *psk, 1247 size_t psk_len) 1248 { 1249 if (is_zero_ether_addr(p2p_dev_addr)) { 1250 wpa_printf(MSG_DEBUG, 1251 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR, 1252 MAC2STR(mac_addr)); 1253 } else { 1254 wpa_printf(MSG_DEBUG, 1255 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR 1256 " P2P Device Addr " MACSTR, 1257 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 1258 } 1259 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len); 1260 1261 /* TODO */ 1262 1263 return 0; 1264 } 1265 1266 1267 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, 1268 const struct wps_device_data *dev) 1269 { 1270 char uuid[40], txt[400]; 1271 int len; 1272 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1273 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 1274 return; 1275 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid); 1276 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR 1277 " [%s|%s|%s|%s|%s|%s]", 1278 uuid, MAC2STR(dev->mac_addr), dev->device_name, 1279 dev->manufacturer, dev->model_name, 1280 dev->model_number, dev->serial_number, 1281 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 1282 sizeof(devtype))); 1283 if (len > 0 && len < (int) sizeof(txt)) 1284 wpa_printf(MSG_INFO, "%s", txt); 1285 } 1286 1287 1288 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id, 1289 u16 sel_reg_config_methods) 1290 { 1291 #ifdef CONFIG_WPS_ER 1292 struct wpa_supplicant *wpa_s = ctx; 1293 1294 if (wpa_s->wps_er == NULL) 1295 return; 1296 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d " 1297 "dev_password_id=%u sel_reg_config_methods=0x%x", 1298 sel_reg, dev_passwd_id, sel_reg_config_methods); 1299 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id, 1300 sel_reg_config_methods); 1301 #endif /* CONFIG_WPS_ER */ 1302 } 1303 1304 1305 static u16 wps_fix_config_methods(u16 config_methods) 1306 { 1307 #ifdef CONFIG_WPS2 1308 if ((config_methods & 1309 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1310 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1311 wpa_printf(MSG_INFO, "WPS: Converting display to " 1312 "virtual_display for WPS 2.0 compliance"); 1313 config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1314 } 1315 if ((config_methods & 1316 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1317 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1318 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1319 "virtual_push_button for WPS 2.0 compliance"); 1320 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1321 } 1322 #endif /* CONFIG_WPS2 */ 1323 1324 return config_methods; 1325 } 1326 1327 1328 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s, 1329 struct wps_context *wps) 1330 { 1331 char buf[50]; 1332 const char *src; 1333 1334 if (is_nil_uuid(wpa_s->conf->uuid)) { 1335 struct wpa_supplicant *first; 1336 first = wpa_s->global->ifaces; 1337 while (first && first->next) 1338 first = first->next; 1339 if (first && first != wpa_s) { 1340 if (wps != wpa_s->global->ifaces->wps) 1341 os_memcpy(wps->uuid, 1342 wpa_s->global->ifaces->wps->uuid, 1343 WPS_UUID_LEN); 1344 src = "from the first interface"; 1345 } else { 1346 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid); 1347 src = "based on MAC address"; 1348 } 1349 } else { 1350 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN); 1351 src = "based on configuration"; 1352 } 1353 1354 uuid_bin2str(wps->uuid, buf, sizeof(buf)); 1355 wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf); 1356 } 1357 1358 1359 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s, 1360 struct wps_context *wps) 1361 { 1362 wpabuf_free(wps->dev.vendor_ext_m1); 1363 wps->dev.vendor_ext_m1 = NULL; 1364 1365 if (wpa_s->conf->wps_vendor_ext_m1) { 1366 wps->dev.vendor_ext_m1 = 1367 wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1); 1368 if (!wps->dev.vendor_ext_m1) { 1369 wpa_printf(MSG_ERROR, "WPS: Cannot " 1370 "allocate memory for vendor_ext_m1"); 1371 } 1372 } 1373 } 1374 1375 1376 int wpas_wps_init(struct wpa_supplicant *wpa_s) 1377 { 1378 struct wps_context *wps; 1379 struct wps_registrar_config rcfg; 1380 struct hostapd_hw_modes *modes; 1381 u16 m; 1382 1383 wps = os_zalloc(sizeof(*wps)); 1384 if (wps == NULL) 1385 return -1; 1386 1387 wps->cred_cb = wpa_supplicant_wps_cred; 1388 wps->event_cb = wpa_supplicant_wps_event; 1389 wps->rf_band_cb = wpa_supplicant_wps_rf_band; 1390 wps->cb_ctx = wpa_s; 1391 1392 wps->dev.device_name = wpa_s->conf->device_name; 1393 wps->dev.manufacturer = wpa_s->conf->manufacturer; 1394 wps->dev.model_name = wpa_s->conf->model_name; 1395 wps->dev.model_number = wpa_s->conf->model_number; 1396 wps->dev.serial_number = wpa_s->conf->serial_number; 1397 wps->config_methods = 1398 wps_config_methods_str2bin(wpa_s->conf->config_methods); 1399 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == 1400 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { 1401 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config " 1402 "methods are not allowed at the same time"); 1403 os_free(wps); 1404 return -1; 1405 } 1406 wps->config_methods = wps_fix_config_methods(wps->config_methods); 1407 wps->dev.config_methods = wps->config_methods; 1408 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, 1409 WPS_DEV_TYPE_LEN); 1410 1411 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 1412 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, 1413 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types); 1414 1415 wpas_wps_set_vendor_ext_m1(wpa_s, wps); 1416 1417 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); 1418 modes = wpa_s->hw.modes; 1419 if (modes) { 1420 for (m = 0; m < wpa_s->hw.num_modes; m++) { 1421 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B || 1422 modes[m].mode == HOSTAPD_MODE_IEEE80211G) 1423 wps->dev.rf_bands |= WPS_RF_24GHZ; 1424 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A) 1425 wps->dev.rf_bands |= WPS_RF_50GHZ; 1426 } 1427 } 1428 if (wps->dev.rf_bands == 0) { 1429 /* 1430 * Default to claiming support for both bands if the driver 1431 * does not provide support for fetching supported bands. 1432 */ 1433 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; 1434 } 1435 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN); 1436 wpas_wps_set_uuid(wpa_s, wps); 1437 1438 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1439 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1440 1441 os_memset(&rcfg, 0, sizeof(rcfg)); 1442 rcfg.new_psk_cb = wpas_wps_new_psk_cb; 1443 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb; 1444 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb; 1445 rcfg.cb_ctx = wpa_s; 1446 1447 wps->registrar = wps_registrar_init(wps, &rcfg); 1448 if (wps->registrar == NULL) { 1449 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar"); 1450 os_free(wps); 1451 return -1; 1452 } 1453 1454 wpa_s->wps = wps; 1455 1456 return 0; 1457 } 1458 1459 1460 #ifdef CONFIG_WPS_ER 1461 static void wpas_wps_nfc_clear(struct wps_context *wps) 1462 { 1463 wps->ap_nfc_dev_pw_id = 0; 1464 wpabuf_free(wps->ap_nfc_dh_pubkey); 1465 wps->ap_nfc_dh_pubkey = NULL; 1466 wpabuf_free(wps->ap_nfc_dh_privkey); 1467 wps->ap_nfc_dh_privkey = NULL; 1468 wpabuf_free(wps->ap_nfc_dev_pw); 1469 wps->ap_nfc_dev_pw = NULL; 1470 } 1471 #endif /* CONFIG_WPS_ER */ 1472 1473 1474 void wpas_wps_deinit(struct wpa_supplicant *wpa_s) 1475 { 1476 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 1477 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL); 1478 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL); 1479 wpas_wps_clear_ap_info(wpa_s); 1480 1481 if (wpa_s->wps == NULL) 1482 return; 1483 1484 #ifdef CONFIG_WPS_ER 1485 wps_er_deinit(wpa_s->wps_er, NULL, NULL); 1486 wpa_s->wps_er = NULL; 1487 wpas_wps_nfc_clear(wpa_s->wps); 1488 #endif /* CONFIG_WPS_ER */ 1489 1490 wps_registrar_deinit(wpa_s->wps->registrar); 1491 wpabuf_free(wpa_s->wps->dh_pubkey); 1492 wpabuf_free(wpa_s->wps->dh_privkey); 1493 wpabuf_free(wpa_s->wps->dev.vendor_ext_m1); 1494 os_free(wpa_s->wps->network_key); 1495 os_free(wpa_s->wps); 1496 wpa_s->wps = NULL; 1497 } 1498 1499 1500 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s, 1501 struct wpa_ssid *ssid, struct wpa_bss *bss) 1502 { 1503 struct wpabuf *wps_ie; 1504 1505 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) 1506 return -1; 1507 1508 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1509 if (eap_is_wps_pbc_enrollee(&ssid->eap)) { 1510 if (!wps_ie) { 1511 wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); 1512 return 0; 1513 } 1514 1515 if (!wps_is_selected_pbc_registrar(wps_ie)) { 1516 wpa_printf(MSG_DEBUG, " skip - WPS AP " 1517 "without active PBC Registrar"); 1518 wpabuf_free(wps_ie); 1519 return 0; 1520 } 1521 1522 /* TODO: overlap detection */ 1523 wpa_printf(MSG_DEBUG, " selected based on WPS IE " 1524 "(Active PBC)"); 1525 wpabuf_free(wps_ie); 1526 return 1; 1527 } 1528 1529 if (eap_is_wps_pin_enrollee(&ssid->eap)) { 1530 if (!wps_ie) { 1531 wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); 1532 return 0; 1533 } 1534 1535 /* 1536 * Start with WPS APs that advertise our address as an 1537 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and 1538 * allow any WPS AP after couple of scans since some APs do not 1539 * set Selected Registrar attribute properly when using 1540 * external Registrar. 1541 */ 1542 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) { 1543 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) { 1544 wpa_printf(MSG_DEBUG, " skip - WPS AP " 1545 "without active PIN Registrar"); 1546 wpabuf_free(wps_ie); 1547 return 0; 1548 } 1549 wpa_printf(MSG_DEBUG, " selected based on WPS IE"); 1550 } else { 1551 wpa_printf(MSG_DEBUG, " selected based on WPS IE " 1552 "(Authorized MAC or Active PIN)"); 1553 } 1554 wpabuf_free(wps_ie); 1555 return 1; 1556 } 1557 1558 if (wps_ie) { 1559 wpa_printf(MSG_DEBUG, " selected based on WPS IE"); 1560 wpabuf_free(wps_ie); 1561 return 1; 1562 } 1563 1564 return -1; 1565 } 1566 1567 1568 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s, 1569 struct wpa_ssid *ssid, 1570 struct wpa_bss *bss) 1571 { 1572 struct wpabuf *wps_ie = NULL; 1573 int ret = 0; 1574 1575 if (eap_is_wps_pbc_enrollee(&ssid->eap)) { 1576 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1577 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) { 1578 /* allow wildcard SSID for WPS PBC */ 1579 ret = 1; 1580 } 1581 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) { 1582 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1583 if (wps_ie && 1584 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) || 1585 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) { 1586 /* allow wildcard SSID for WPS PIN */ 1587 ret = 1; 1588 } 1589 } 1590 1591 if (!ret && ssid->bssid_set && 1592 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) { 1593 /* allow wildcard SSID due to hardcoded BSSID match */ 1594 ret = 1; 1595 } 1596 1597 #ifdef CONFIG_WPS_STRICT 1598 if (wps_ie) { 1599 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len > 1600 0, bss->bssid) < 0) 1601 ret = 0; 1602 if (bss->beacon_ie_len) { 1603 struct wpabuf *bcn_wps; 1604 bcn_wps = wpa_bss_get_vendor_ie_multi_beacon( 1605 bss, WPS_IE_VENDOR_TYPE); 1606 if (bcn_wps == NULL) { 1607 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE " 1608 "missing from AP Beacon"); 1609 ret = 0; 1610 } else { 1611 if (wps_validate_beacon(wps_ie) < 0) 1612 ret = 0; 1613 wpabuf_free(bcn_wps); 1614 } 1615 } 1616 } 1617 #endif /* CONFIG_WPS_STRICT */ 1618 1619 wpabuf_free(wps_ie); 1620 1621 return ret; 1622 } 1623 1624 1625 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s, 1626 struct wpa_bss *selected, struct wpa_ssid *ssid) 1627 { 1628 const u8 *sel_uuid, *uuid; 1629 struct wpabuf *wps_ie; 1630 int ret = 0; 1631 struct wpa_bss *bss; 1632 1633 if (!eap_is_wps_pbc_enrollee(&ssid->eap)) 1634 return 0; 1635 1636 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is " 1637 "present in scan results; selected BSSID " MACSTR, 1638 MAC2STR(selected->bssid)); 1639 1640 /* Make sure that only one AP is in active PBC mode */ 1641 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE); 1642 if (wps_ie) { 1643 sel_uuid = wps_get_uuid_e(wps_ie); 1644 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS", 1645 sel_uuid, UUID_LEN); 1646 } else { 1647 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include " 1648 "WPS IE?!"); 1649 sel_uuid = NULL; 1650 } 1651 1652 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1653 struct wpabuf *ie; 1654 if (bss == selected) 1655 continue; 1656 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1657 if (!ie) 1658 continue; 1659 if (!wps_is_selected_pbc_registrar(ie)) { 1660 wpabuf_free(ie); 1661 continue; 1662 } 1663 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: " 1664 MACSTR, MAC2STR(bss->bssid)); 1665 uuid = wps_get_uuid_e(ie); 1666 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS", 1667 uuid, UUID_LEN); 1668 if (sel_uuid == NULL || uuid == NULL || 1669 os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) { 1670 ret = 1; /* PBC overlap */ 1671 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: " 1672 MACSTR " and " MACSTR, 1673 MAC2STR(selected->bssid), 1674 MAC2STR(bss->bssid)); 1675 wpabuf_free(ie); 1676 break; 1677 } 1678 1679 /* TODO: verify that this is reasonable dual-band situation */ 1680 1681 wpabuf_free(ie); 1682 } 1683 1684 wpabuf_free(wps_ie); 1685 1686 return ret; 1687 } 1688 1689 1690 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s) 1691 { 1692 struct wpa_bss *bss; 1693 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0; 1694 1695 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED) 1696 return; 1697 1698 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1699 struct wpabuf *ie; 1700 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1701 if (!ie) 1702 continue; 1703 if (wps_is_selected_pbc_registrar(ie)) 1704 pbc++; 1705 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0)) 1706 auth++; 1707 else if (wps_is_selected_pin_registrar(ie)) 1708 pin++; 1709 else 1710 wps++; 1711 wpabuf_free(ie); 1712 } 1713 1714 if (pbc) 1715 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC); 1716 else if (auth) 1717 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH); 1718 else if (pin) 1719 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN); 1720 else if (wps) 1721 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE); 1722 } 1723 1724 1725 int wpas_wps_searching(struct wpa_supplicant *wpa_s) 1726 { 1727 struct wpa_ssid *ssid; 1728 1729 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1730 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled) 1731 return 1; 1732 } 1733 1734 return 0; 1735 } 1736 1737 1738 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 1739 char *end) 1740 { 1741 struct wpabuf *wps_ie; 1742 int ret; 1743 1744 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA); 1745 if (wps_ie == NULL) 1746 return 0; 1747 1748 ret = wps_attr_text(wps_ie, buf, end); 1749 wpabuf_free(wps_ie); 1750 return ret; 1751 } 1752 1753 1754 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter) 1755 { 1756 #ifdef CONFIG_WPS_ER 1757 if (wpa_s->wps_er) { 1758 wps_er_refresh(wpa_s->wps_er); 1759 return 0; 1760 } 1761 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter); 1762 if (wpa_s->wps_er == NULL) 1763 return -1; 1764 return 0; 1765 #else /* CONFIG_WPS_ER */ 1766 return 0; 1767 #endif /* CONFIG_WPS_ER */ 1768 } 1769 1770 1771 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s) 1772 { 1773 #ifdef CONFIG_WPS_ER 1774 wps_er_deinit(wpa_s->wps_er, NULL, NULL); 1775 wpa_s->wps_er = NULL; 1776 #endif /* CONFIG_WPS_ER */ 1777 return 0; 1778 } 1779 1780 1781 #ifdef CONFIG_WPS_ER 1782 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr, 1783 const char *uuid, const char *pin) 1784 { 1785 u8 u[UUID_LEN]; 1786 const u8 *use_uuid = NULL; 1787 u8 addr_buf[ETH_ALEN]; 1788 1789 if (os_strcmp(uuid, "any") == 0) { 1790 } else if (uuid_str2bin(uuid, u) == 0) { 1791 use_uuid = u; 1792 } else if (hwaddr_aton(uuid, addr_buf) == 0) { 1793 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf); 1794 if (use_uuid == NULL) 1795 return -1; 1796 } else 1797 return -1; 1798 return wps_registrar_add_pin(wpa_s->wps->registrar, addr, 1799 use_uuid, 1800 (const u8 *) pin, os_strlen(pin), 300); 1801 } 1802 1803 1804 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid) 1805 { 1806 u8 u[UUID_LEN], *use_uuid = NULL; 1807 u8 addr[ETH_ALEN], *use_addr = NULL; 1808 1809 if (uuid_str2bin(uuid, u) == 0) 1810 use_uuid = u; 1811 else if (hwaddr_aton(uuid, addr) == 0) 1812 use_addr = addr; 1813 else 1814 return -1; 1815 return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr); 1816 } 1817 1818 1819 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid, 1820 const char *pin) 1821 { 1822 u8 u[UUID_LEN], *use_uuid = NULL; 1823 u8 addr[ETH_ALEN], *use_addr = NULL; 1824 1825 if (uuid_str2bin(uuid, u) == 0) 1826 use_uuid = u; 1827 else if (hwaddr_aton(uuid, addr) == 0) 1828 use_addr = addr; 1829 else 1830 return -1; 1831 1832 return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin, 1833 os_strlen(pin)); 1834 } 1835 1836 1837 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid, 1838 struct wps_credential *cred) 1839 { 1840 os_memset(cred, 0, sizeof(*cred)); 1841 if (ssid->ssid_len > 32) 1842 return -1; 1843 os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len); 1844 cred->ssid_len = ssid->ssid_len; 1845 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) { 1846 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ? 1847 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK; 1848 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP) 1849 cred->encr_type = WPS_ENCR_AES; 1850 else 1851 cred->encr_type = WPS_ENCR_TKIP; 1852 if (ssid->passphrase) { 1853 cred->key_len = os_strlen(ssid->passphrase); 1854 if (cred->key_len >= 64) 1855 return -1; 1856 os_memcpy(cred->key, ssid->passphrase, cred->key_len); 1857 } else if (ssid->psk_set) { 1858 cred->key_len = 32; 1859 os_memcpy(cred->key, ssid->psk, 32); 1860 } else 1861 return -1; 1862 } else { 1863 cred->auth_type = WPS_AUTH_OPEN; 1864 cred->encr_type = WPS_ENCR_NONE; 1865 } 1866 1867 return 0; 1868 } 1869 1870 1871 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid, 1872 int id) 1873 { 1874 u8 u[UUID_LEN], *use_uuid = NULL; 1875 u8 addr[ETH_ALEN], *use_addr = NULL; 1876 struct wpa_ssid *ssid; 1877 struct wps_credential cred; 1878 1879 if (uuid_str2bin(uuid, u) == 0) 1880 use_uuid = u; 1881 else if (hwaddr_aton(uuid, addr) == 0) 1882 use_addr = addr; 1883 else 1884 return -1; 1885 ssid = wpa_config_get_network(wpa_s->conf, id); 1886 if (ssid == NULL || ssid->ssid == NULL) 1887 return -1; 1888 1889 if (wpas_wps_network_to_cred(ssid, &cred) < 0) 1890 return -1; 1891 return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred); 1892 } 1893 1894 1895 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid, 1896 const char *pin, struct wps_new_ap_settings *settings) 1897 { 1898 u8 u[UUID_LEN], *use_uuid = NULL; 1899 u8 addr[ETH_ALEN], *use_addr = NULL; 1900 struct wps_credential cred; 1901 size_t len; 1902 1903 if (uuid_str2bin(uuid, u) == 0) 1904 use_uuid = u; 1905 else if (hwaddr_aton(uuid, addr) == 0) 1906 use_addr = addr; 1907 else 1908 return -1; 1909 if (settings->ssid_hex == NULL || settings->auth == NULL || 1910 settings->encr == NULL || settings->key_hex == NULL) 1911 return -1; 1912 1913 os_memset(&cred, 0, sizeof(cred)); 1914 len = os_strlen(settings->ssid_hex); 1915 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1916 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2)) 1917 return -1; 1918 cred.ssid_len = len / 2; 1919 1920 len = os_strlen(settings->key_hex); 1921 if ((len & 1) || len > 2 * sizeof(cred.key) || 1922 hexstr2bin(settings->key_hex, cred.key, len / 2)) 1923 return -1; 1924 cred.key_len = len / 2; 1925 1926 if (os_strcmp(settings->auth, "OPEN") == 0) 1927 cred.auth_type = WPS_AUTH_OPEN; 1928 else if (os_strcmp(settings->auth, "WPAPSK") == 0) 1929 cred.auth_type = WPS_AUTH_WPAPSK; 1930 else if (os_strcmp(settings->auth, "WPA2PSK") == 0) 1931 cred.auth_type = WPS_AUTH_WPA2PSK; 1932 else 1933 return -1; 1934 1935 if (os_strcmp(settings->encr, "NONE") == 0) 1936 cred.encr_type = WPS_ENCR_NONE; 1937 else if (os_strcmp(settings->encr, "WEP") == 0) 1938 cred.encr_type = WPS_ENCR_WEP; 1939 else if (os_strcmp(settings->encr, "TKIP") == 0) 1940 cred.encr_type = WPS_ENCR_TKIP; 1941 else if (os_strcmp(settings->encr, "CCMP") == 0) 1942 cred.encr_type = WPS_ENCR_AES; 1943 else 1944 return -1; 1945 1946 return wps_er_config(wpa_s->wps_er, use_uuid, use_addr, 1947 (const u8 *) pin, os_strlen(pin), &cred); 1948 } 1949 1950 1951 #ifdef CONFIG_WPS_NFC 1952 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s, 1953 int ndef, const char *uuid) 1954 { 1955 struct wpabuf *ret; 1956 u8 u[UUID_LEN], *use_uuid = NULL; 1957 u8 addr[ETH_ALEN], *use_addr = NULL; 1958 1959 if (!wpa_s->wps_er) 1960 return NULL; 1961 1962 if (uuid_str2bin(uuid, u) == 0) 1963 use_uuid = u; 1964 else if (hwaddr_aton(uuid, addr) == 0) 1965 use_addr = addr; 1966 else 1967 return NULL; 1968 1969 ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr); 1970 if (ndef && ret) { 1971 struct wpabuf *tmp; 1972 tmp = ndef_build_wifi(ret); 1973 wpabuf_free(ret); 1974 if (tmp == NULL) 1975 return NULL; 1976 ret = tmp; 1977 } 1978 1979 return ret; 1980 } 1981 #endif /* CONFIG_WPS_NFC */ 1982 1983 1984 static int callbacks_pending = 0; 1985 1986 static void wpas_wps_terminate_cb(void *ctx) 1987 { 1988 wpa_printf(MSG_DEBUG, "WPS ER: Terminated"); 1989 if (--callbacks_pending <= 0) 1990 eloop_terminate(); 1991 } 1992 #endif /* CONFIG_WPS_ER */ 1993 1994 1995 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s) 1996 { 1997 #ifdef CONFIG_WPS_ER 1998 if (wpa_s->wps_er) { 1999 callbacks_pending++; 2000 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s); 2001 wpa_s->wps_er = NULL; 2002 return 1; 2003 } 2004 #endif /* CONFIG_WPS_ER */ 2005 return 0; 2006 } 2007 2008 2009 void wpas_wps_update_config(struct wpa_supplicant *wpa_s) 2010 { 2011 struct wps_context *wps = wpa_s->wps; 2012 2013 if (wps == NULL) 2014 return; 2015 2016 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) { 2017 wps->config_methods = wps_config_methods_str2bin( 2018 wpa_s->conf->config_methods); 2019 if ((wps->config_methods & 2020 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == 2021 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { 2022 wpa_printf(MSG_ERROR, "WPS: Both Label and Display " 2023 "config methods are not allowed at the " 2024 "same time"); 2025 wps->config_methods &= ~WPS_CONFIG_LABEL; 2026 } 2027 } 2028 wps->config_methods = wps_fix_config_methods(wps->config_methods); 2029 wps->dev.config_methods = wps->config_methods; 2030 2031 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 2032 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, 2033 WPS_DEV_TYPE_LEN); 2034 2035 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) { 2036 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 2037 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, 2038 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN); 2039 } 2040 2041 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) 2042 wpas_wps_set_vendor_ext_m1(wpa_s, wps); 2043 2044 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION) 2045 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); 2046 2047 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) 2048 wpas_wps_set_uuid(wpa_s, wps); 2049 2050 if (wpa_s->conf->changed_parameters & 2051 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) { 2052 /* Update pointers to make sure they refer current values */ 2053 wps->dev.device_name = wpa_s->conf->device_name; 2054 wps->dev.manufacturer = wpa_s->conf->manufacturer; 2055 wps->dev.model_name = wpa_s->conf->model_name; 2056 wps->dev.model_number = wpa_s->conf->model_number; 2057 wps->dev.serial_number = wpa_s->conf->serial_number; 2058 } 2059 } 2060 2061 2062 #ifdef CONFIG_WPS_NFC 2063 2064 #ifdef CONFIG_WPS_ER 2065 static struct wpabuf * 2066 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef, 2067 struct wpa_ssid *ssid) 2068 { 2069 struct wpabuf *ret; 2070 struct wps_credential cred; 2071 2072 if (wpas_wps_network_to_cred(ssid, &cred) < 0) 2073 return NULL; 2074 2075 ret = wps_er_config_token_from_cred(wpa_s->wps, &cred); 2076 2077 if (ndef && ret) { 2078 struct wpabuf *tmp; 2079 tmp = ndef_build_wifi(ret); 2080 wpabuf_free(ret); 2081 if (tmp == NULL) 2082 return NULL; 2083 ret = tmp; 2084 } 2085 2086 return ret; 2087 } 2088 #endif /* CONFIG_WPS_ER */ 2089 2090 2091 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s, 2092 int ndef, const char *id_str) 2093 { 2094 #ifdef CONFIG_WPS_ER 2095 if (id_str) { 2096 int id; 2097 char *end = NULL; 2098 struct wpa_ssid *ssid; 2099 2100 id = strtol(id_str, &end, 10); 2101 if (end && *end) 2102 return NULL; 2103 2104 ssid = wpa_config_get_network(wpa_s->conf, id); 2105 if (ssid == NULL) 2106 return NULL; 2107 return wpas_wps_network_config_token(wpa_s, ndef, ssid); 2108 } 2109 #endif /* CONFIG_WPS_ER */ 2110 #ifdef CONFIG_AP 2111 if (wpa_s->ap_iface) 2112 return wpas_ap_wps_nfc_config_token(wpa_s, ndef); 2113 #endif /* CONFIG_AP */ 2114 return NULL; 2115 } 2116 2117 2118 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef) 2119 { 2120 if (wpa_s->conf->wps_nfc_pw_from_config) { 2121 return wps_nfc_token_build(ndef, 2122 wpa_s->conf->wps_nfc_dev_pw_id, 2123 wpa_s->conf->wps_nfc_dh_pubkey, 2124 wpa_s->conf->wps_nfc_dev_pw); 2125 } 2126 2127 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id, 2128 &wpa_s->conf->wps_nfc_dh_pubkey, 2129 &wpa_s->conf->wps_nfc_dh_privkey, 2130 &wpa_s->conf->wps_nfc_dev_pw); 2131 } 2132 2133 2134 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *go_dev_addr, 2135 const u8 *bssid, 2136 const struct wpabuf *dev_pw, u16 dev_pw_id, 2137 int p2p_group, const u8 *peer_pubkey_hash, 2138 const u8 *ssid, size_t ssid_len, int freq) 2139 { 2140 struct wps_context *wps = wpa_s->wps; 2141 char pw[32 * 2 + 1]; 2142 2143 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) { 2144 dev_pw = wpa_s->conf->wps_nfc_dev_pw; 2145 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 2146 } 2147 2148 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 2149 wpa_s->conf->wps_nfc_dh_privkey == NULL) { 2150 wpa_printf(MSG_DEBUG, "WPS: Missing DH params - " 2151 "cannot start NFC-triggered connection"); 2152 return -1; 2153 } 2154 2155 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) { 2156 wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - " 2157 "cannot start NFC-triggered connection", dev_pw_id); 2158 return -1; 2159 } 2160 2161 dh5_free(wps->dh_ctx); 2162 wpabuf_free(wps->dh_pubkey); 2163 wpabuf_free(wps->dh_privkey); 2164 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 2165 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 2166 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) { 2167 wps->dh_ctx = NULL; 2168 wpabuf_free(wps->dh_pubkey); 2169 wps->dh_pubkey = NULL; 2170 wpabuf_free(wps->dh_privkey); 2171 wps->dh_privkey = NULL; 2172 wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key"); 2173 return -1; 2174 } 2175 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey); 2176 if (wps->dh_ctx == NULL) { 2177 wpabuf_free(wps->dh_pubkey); 2178 wps->dh_pubkey = NULL; 2179 wpabuf_free(wps->dh_privkey); 2180 wps->dh_privkey = NULL; 2181 wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context"); 2182 return -1; 2183 } 2184 2185 if (dev_pw) { 2186 wpa_snprintf_hex_uppercase(pw, sizeof(pw), 2187 wpabuf_head(dev_pw), 2188 wpabuf_len(dev_pw)); 2189 } 2190 return wpas_wps_start_dev_pw(wpa_s, go_dev_addr, bssid, 2191 dev_pw ? pw : NULL, 2192 p2p_group, dev_pw_id, peer_pubkey_hash, 2193 ssid, ssid_len, freq); 2194 } 2195 2196 2197 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s, 2198 struct wps_parse_attr *attr) 2199 { 2200 wpa_s->wps_ap_channel = 0; 2201 2202 /* 2203 * Disable existing networks temporarily to allow the newly learned 2204 * credential to be preferred. Enable the temporarily disabled networks 2205 * after 10 seconds. 2206 */ 2207 wpas_wps_temp_disable(wpa_s, NULL); 2208 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s, 2209 NULL); 2210 2211 if (wps_oob_use_cred(wpa_s->wps, attr) < 0) 2212 return -1; 2213 2214 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 2215 return 0; 2216 2217 if (!wpa_s->wps_ap_channel && attr->ap_channel) { 2218 wpa_s->wps_ap_channel = WPA_GET_BE16(attr->ap_channel); 2219 wpa_printf(MSG_DEBUG, "WPS: Credential container indicated AP Channel %d", 2220 wpa_s->wps_ap_channel); 2221 } 2222 2223 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network " 2224 "based on the received credential added"); 2225 wpa_s->normal_scans = 0; 2226 wpa_supplicant_reinit_autoscan(wpa_s); 2227 if (wpa_s->wps_ap_channel) { 2228 u16 chan = wpa_s->wps_ap_channel; 2229 int freq = 0; 2230 2231 if (chan >= 1 && chan <= 13) 2232 freq = 2407 + 5 * chan; 2233 else if (chan == 14) 2234 freq = 2484; 2235 else if (chan >= 30) 2236 freq = 5000 + 5 * chan; 2237 2238 if (freq) { 2239 wpa_printf(MSG_DEBUG, "WPS: Credential indicated " 2240 "AP channel %u -> %u MHz", chan, freq); 2241 wpa_s->after_wps = 5; 2242 wpa_s->wps_freq = freq; 2243 } 2244 } 2245 wpa_s->disconnected = 0; 2246 wpa_s->reassociate = 1; 2247 2248 wpa_supplicant_cancel_sched_scan(wpa_s); 2249 wpa_supplicant_req_scan(wpa_s, 0, 0); 2250 2251 return 0; 2252 } 2253 2254 2255 #ifdef CONFIG_WPS_ER 2256 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s, 2257 struct wps_parse_attr *attr) 2258 { 2259 return wps_registrar_add_nfc_password_token( 2260 wpa_s->wps->registrar, attr->oob_dev_password, 2261 attr->oob_dev_password_len); 2262 } 2263 #endif /* CONFIG_WPS_ER */ 2264 2265 2266 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s, 2267 const struct wpabuf *wps) 2268 { 2269 struct wps_parse_attr attr; 2270 2271 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 2272 2273 if (wps_parse_msg(wps, &attr)) { 2274 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 2275 return -1; 2276 } 2277 2278 if (attr.num_cred) 2279 return wpas_wps_use_cred(wpa_s, &attr); 2280 2281 #ifdef CONFIG_WPS_ER 2282 if (attr.oob_dev_password) 2283 return wpas_wps_add_nfc_password_token(wpa_s, &attr); 2284 #endif /* CONFIG_WPS_ER */ 2285 2286 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 2287 return -1; 2288 } 2289 2290 2291 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s, 2292 const struct wpabuf *data, int forced_freq) 2293 { 2294 const struct wpabuf *wps = data; 2295 struct wpabuf *tmp = NULL; 2296 int ret; 2297 2298 if (wpabuf_len(data) < 4) 2299 return -1; 2300 2301 if (*wpabuf_head_u8(data) != 0x10) { 2302 /* Assume this contains full NDEF record */ 2303 tmp = ndef_parse_wifi(data); 2304 if (tmp == NULL) { 2305 #ifdef CONFIG_P2P 2306 tmp = ndef_parse_p2p(data); 2307 if (tmp) { 2308 ret = wpas_p2p_nfc_tag_process(wpa_s, tmp, 2309 forced_freq); 2310 wpabuf_free(tmp); 2311 return ret; 2312 } 2313 #endif /* CONFIG_P2P */ 2314 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 2315 return -1; 2316 } 2317 wps = tmp; 2318 } 2319 2320 ret = wpas_wps_nfc_tag_process(wpa_s, wps); 2321 wpabuf_free(tmp); 2322 return ret; 2323 } 2324 2325 2326 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, 2327 int ndef) 2328 { 2329 struct wpabuf *ret; 2330 2331 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 2332 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 2333 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 2334 return NULL; 2335 2336 ret = wps_build_nfc_handover_req(wpa_s->wps, 2337 wpa_s->conf->wps_nfc_dh_pubkey); 2338 2339 if (ndef && ret) { 2340 struct wpabuf *tmp; 2341 tmp = ndef_build_wifi(ret); 2342 wpabuf_free(ret); 2343 if (tmp == NULL) 2344 return NULL; 2345 ret = tmp; 2346 } 2347 2348 return ret; 2349 } 2350 2351 2352 #ifdef CONFIG_WPS_NFC 2353 2354 static struct wpabuf * 2355 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef, 2356 const char *uuid) 2357 { 2358 #ifdef CONFIG_WPS_ER 2359 struct wpabuf *ret; 2360 u8 u[UUID_LEN], *use_uuid = NULL; 2361 u8 addr[ETH_ALEN], *use_addr = NULL; 2362 struct wps_context *wps = wpa_s->wps; 2363 2364 if (wps == NULL) 2365 return NULL; 2366 2367 if (uuid == NULL) 2368 return NULL; 2369 if (uuid_str2bin(uuid, u) == 0) 2370 use_uuid = u; 2371 else if (hwaddr_aton(uuid, addr) == 0) 2372 use_addr = addr; 2373 else 2374 return NULL; 2375 2376 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) { 2377 if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 2378 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 2379 return NULL; 2380 } 2381 2382 wpas_wps_nfc_clear(wps); 2383 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 2384 wps->ap_nfc_dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 2385 wps->ap_nfc_dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 2386 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) { 2387 wpas_wps_nfc_clear(wps); 2388 return NULL; 2389 } 2390 2391 ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid, 2392 use_addr, wpa_s->conf->wps_nfc_dh_pubkey); 2393 if (ndef && ret) { 2394 struct wpabuf *tmp; 2395 tmp = ndef_build_wifi(ret); 2396 wpabuf_free(ret); 2397 if (tmp == NULL) 2398 return NULL; 2399 ret = tmp; 2400 } 2401 2402 return ret; 2403 #else /* CONFIG_WPS_ER */ 2404 return NULL; 2405 #endif /* CONFIG_WPS_ER */ 2406 } 2407 #endif /* CONFIG_WPS_NFC */ 2408 2409 2410 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s, 2411 int ndef, int cr, const char *uuid) 2412 { 2413 struct wpabuf *ret; 2414 if (!cr) 2415 return NULL; 2416 ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef); 2417 if (ret) 2418 return ret; 2419 return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid); 2420 } 2421 2422 2423 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s, 2424 const struct wpabuf *data) 2425 { 2426 /* TODO */ 2427 return -1; 2428 } 2429 2430 2431 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s, 2432 const struct wpabuf *data) 2433 { 2434 struct wpabuf *wps; 2435 int ret = -1; 2436 u16 wsc_len; 2437 const u8 *pos; 2438 struct wpabuf msg; 2439 struct wps_parse_attr attr; 2440 u16 dev_pw_id; 2441 const u8 *bssid = NULL; 2442 int freq = 0; 2443 2444 wps = ndef_parse_wifi(data); 2445 if (wps == NULL) 2446 return -1; 2447 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 2448 "payload from NFC connection handover"); 2449 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 2450 if (wpabuf_len(wps) < 2) { 2451 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select " 2452 "Message"); 2453 goto out; 2454 } 2455 pos = wpabuf_head(wps); 2456 wsc_len = WPA_GET_BE16(pos); 2457 if (wsc_len > wpabuf_len(wps) - 2) { 2458 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 2459 "in Wi-Fi Handover Select Message", wsc_len); 2460 goto out; 2461 } 2462 pos += 2; 2463 2464 wpa_hexdump(MSG_DEBUG, 2465 "WPS: WSC attributes in Wi-Fi Handover Select Message", 2466 pos, wsc_len); 2467 if (wsc_len < wpabuf_len(wps) - 2) { 2468 wpa_hexdump(MSG_DEBUG, 2469 "WPS: Ignore extra data after WSC attributes", 2470 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 2471 } 2472 2473 wpabuf_set(&msg, pos, wsc_len); 2474 ret = wps_parse_msg(&msg, &attr); 2475 if (ret < 0) { 2476 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 2477 "Wi-Fi Handover Select Message"); 2478 goto out; 2479 } 2480 2481 if (attr.oob_dev_password == NULL || 2482 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 2483 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 2484 "included in Wi-Fi Handover Select Message"); 2485 ret = -1; 2486 goto out; 2487 } 2488 2489 if (attr.ssid == NULL) { 2490 wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover " 2491 "Select Message"); 2492 ret = -1; 2493 goto out; 2494 } 2495 2496 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len); 2497 2498 if (attr.mac_addr) { 2499 bssid = attr.mac_addr; 2500 wpa_printf(MSG_DEBUG, "WPS: MAC Address (BSSID): " MACSTR, 2501 MAC2STR(bssid)); 2502 } 2503 2504 if (attr.rf_bands) 2505 wpa_printf(MSG_DEBUG, "WPS: RF Bands: %d", *attr.rf_bands); 2506 2507 if (attr.ap_channel) { 2508 u16 chan = WPA_GET_BE16(attr.ap_channel); 2509 2510 wpa_printf(MSG_DEBUG, "WPS: AP Channel: %d", chan); 2511 2512 if (chan >= 1 && chan <= 13 && 2513 (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ)) 2514 freq = 2407 + 5 * chan; 2515 else if (chan == 14 && 2516 (attr.rf_bands == NULL || 2517 *attr.rf_bands & WPS_RF_24GHZ)) 2518 freq = 2484; 2519 else if (chan >= 30 && 2520 (attr.rf_bands == NULL || 2521 *attr.rf_bands & WPS_RF_50GHZ)) 2522 freq = 5000 + 5 * chan; 2523 2524 if (freq) { 2525 wpa_printf(MSG_DEBUG, 2526 "WPS: AP indicated channel %u -> %u MHz", 2527 chan, freq); 2528 } 2529 } 2530 2531 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 2532 attr.oob_dev_password, attr.oob_dev_password_len); 2533 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 2534 WPS_OOB_PUBKEY_HASH_LEN); 2535 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 2536 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 2537 "%u in Wi-Fi Handover Select Message", dev_pw_id); 2538 ret = -1; 2539 goto out; 2540 } 2541 wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash", 2542 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 2543 2544 ret = wpas_wps_start_nfc(wpa_s, NULL, bssid, NULL, dev_pw_id, 0, 2545 attr.oob_dev_password, 2546 attr.ssid, attr.ssid_len, freq); 2547 2548 out: 2549 wpabuf_free(wps); 2550 return ret; 2551 } 2552 2553 2554 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s, 2555 const struct wpabuf *req, 2556 const struct wpabuf *sel) 2557 { 2558 wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported"); 2559 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req); 2560 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel); 2561 return wpas_wps_nfc_rx_handover_sel(wpa_s, sel); 2562 } 2563 2564 2565 int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s, 2566 const struct wpabuf *req, 2567 const struct wpabuf *sel) 2568 { 2569 struct wpabuf *wps; 2570 int ret = -1; 2571 u16 wsc_len; 2572 const u8 *pos; 2573 struct wpabuf msg; 2574 struct wps_parse_attr attr; 2575 u16 dev_pw_id; 2576 2577 /* 2578 * Enrollee/station is always initiator of the NFC connection handover, 2579 * so use the request message here to find Enrollee public key hash. 2580 */ 2581 wps = ndef_parse_wifi(req); 2582 if (wps == NULL) 2583 return -1; 2584 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 2585 "payload from NFC connection handover"); 2586 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 2587 if (wpabuf_len(wps) < 2) { 2588 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request " 2589 "Message"); 2590 goto out; 2591 } 2592 pos = wpabuf_head(wps); 2593 wsc_len = WPA_GET_BE16(pos); 2594 if (wsc_len > wpabuf_len(wps) - 2) { 2595 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 2596 "in rt Wi-Fi Handover Request Message", wsc_len); 2597 goto out; 2598 } 2599 pos += 2; 2600 2601 wpa_hexdump(MSG_DEBUG, 2602 "WPS: WSC attributes in Wi-Fi Handover Request Message", 2603 pos, wsc_len); 2604 if (wsc_len < wpabuf_len(wps) - 2) { 2605 wpa_hexdump(MSG_DEBUG, 2606 "WPS: Ignore extra data after WSC attributes", 2607 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 2608 } 2609 2610 wpabuf_set(&msg, pos, wsc_len); 2611 ret = wps_parse_msg(&msg, &attr); 2612 if (ret < 0) { 2613 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 2614 "Wi-Fi Handover Request Message"); 2615 goto out; 2616 } 2617 2618 if (attr.oob_dev_password == NULL || 2619 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 2620 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 2621 "included in Wi-Fi Handover Request Message"); 2622 ret = -1; 2623 goto out; 2624 } 2625 2626 if (attr.uuid_e == NULL) { 2627 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi " 2628 "Handover Request Message"); 2629 ret = -1; 2630 goto out; 2631 } 2632 2633 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN); 2634 2635 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 2636 attr.oob_dev_password, attr.oob_dev_password_len); 2637 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 2638 WPS_OOB_PUBKEY_HASH_LEN); 2639 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 2640 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 2641 "%u in Wi-Fi Handover Request Message", dev_pw_id); 2642 ret = -1; 2643 goto out; 2644 } 2645 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash", 2646 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 2647 2648 ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar, 2649 attr.oob_dev_password, 2650 DEV_PW_NFC_CONNECTION_HANDOVER, 2651 NULL, 0, 1); 2652 2653 out: 2654 wpabuf_free(wps); 2655 return ret; 2656 } 2657 2658 #endif /* CONFIG_WPS_NFC */ 2659 2660 2661 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s) 2662 { 2663 size_t i; 2664 struct os_reltime now; 2665 2666 if (wpa_debug_level > MSG_DEBUG) 2667 return; 2668 2669 if (wpa_s->wps_ap == NULL) 2670 return; 2671 2672 os_get_reltime(&now); 2673 2674 for (i = 0; i < wpa_s->num_wps_ap; i++) { 2675 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 2676 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid); 2677 2678 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d " 2679 "tries=%d last_attempt=%d sec ago blacklist=%d", 2680 (int) i, MAC2STR(ap->bssid), ap->type, ap->tries, 2681 ap->last_attempt.sec > 0 ? 2682 (int) now.sec - (int) ap->last_attempt.sec : -1, 2683 e ? e->count : 0); 2684 } 2685 } 2686 2687 2688 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s, 2689 const u8 *bssid) 2690 { 2691 size_t i; 2692 2693 if (wpa_s->wps_ap == NULL) 2694 return NULL; 2695 2696 for (i = 0; i < wpa_s->num_wps_ap; i++) { 2697 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 2698 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0) 2699 return ap; 2700 } 2701 2702 return NULL; 2703 } 2704 2705 2706 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s, 2707 struct wpa_scan_res *res) 2708 { 2709 struct wpabuf *wps; 2710 enum wps_ap_info_type type; 2711 struct wps_ap_info *ap; 2712 int r; 2713 2714 if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL) 2715 return; 2716 2717 wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE); 2718 if (wps == NULL) 2719 return; 2720 2721 r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1); 2722 if (r == 2) 2723 type = WPS_AP_SEL_REG_OUR; 2724 else if (r == 1) 2725 type = WPS_AP_SEL_REG; 2726 else 2727 type = WPS_AP_NOT_SEL_REG; 2728 2729 wpabuf_free(wps); 2730 2731 ap = wpas_wps_get_ap_info(wpa_s, res->bssid); 2732 if (ap) { 2733 if (ap->type != type) { 2734 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR 2735 " changed type %d -> %d", 2736 MAC2STR(res->bssid), ap->type, type); 2737 ap->type = type; 2738 if (type != WPS_AP_NOT_SEL_REG) 2739 wpa_blacklist_del(wpa_s, ap->bssid); 2740 } 2741 return; 2742 } 2743 2744 ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1, 2745 sizeof(struct wps_ap_info)); 2746 if (ap == NULL) 2747 return; 2748 2749 wpa_s->wps_ap = ap; 2750 ap = &wpa_s->wps_ap[wpa_s->num_wps_ap]; 2751 wpa_s->num_wps_ap++; 2752 2753 os_memset(ap, 0, sizeof(*ap)); 2754 os_memcpy(ap->bssid, res->bssid, ETH_ALEN); 2755 ap->type = type; 2756 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added", 2757 MAC2STR(ap->bssid), ap->type); 2758 } 2759 2760 2761 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s, 2762 struct wpa_scan_results *scan_res) 2763 { 2764 size_t i; 2765 2766 for (i = 0; i < scan_res->num; i++) 2767 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]); 2768 2769 wpas_wps_dump_ap_info(wpa_s); 2770 } 2771 2772 2773 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid) 2774 { 2775 struct wps_ap_info *ap; 2776 2777 wpa_s->after_wps = 0; 2778 2779 if (!wpa_s->wps_ap_iter) 2780 return; 2781 ap = wpas_wps_get_ap_info(wpa_s, bssid); 2782 if (ap == NULL) 2783 return; 2784 ap->tries++; 2785 os_get_reltime(&ap->last_attempt); 2786 } 2787