1 /* 2 * wpa_supplicant / WPS integration 3 * Copyright (c) 2008-2012, 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 if (!wpa_s->wps_success && 58 wpa_s->current_ssid && 59 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) { 60 const u8 *bssid = wpa_s->bssid; 61 if (is_zero_ether_addr(bssid)) 62 bssid = wpa_s->pending_bssid; 63 64 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR 65 " did not succeed - continue trying to find " 66 "suitable AP", MAC2STR(bssid)); 67 wpa_blacklist_add(wpa_s, bssid); 68 69 wpa_supplicant_deauthenticate(wpa_s, 70 WLAN_REASON_DEAUTH_LEAVING); 71 wpa_s->reassociate = 1; 72 wpa_supplicant_req_scan(wpa_s, 73 wpa_s->blacklist_cleared ? 5 : 0, 0); 74 wpa_s->blacklist_cleared = 0; 75 return 1; 76 } 77 78 wpas_wps_clear_ap_info(wpa_s); 79 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 80 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success) 81 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL); 82 83 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid && 84 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 85 int disabled = wpa_s->current_ssid->disabled; 86 unsigned int freq = wpa_s->assoc_freq; 87 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - " 88 "try to associate with the received credential " 89 "(freq=%u)", freq); 90 wpa_supplicant_deauthenticate(wpa_s, 91 WLAN_REASON_DEAUTH_LEAVING); 92 if (disabled) { 93 wpa_printf(MSG_DEBUG, "WPS: Current network is " 94 "disabled - wait for user to enable"); 95 return 1; 96 } 97 wpa_s->after_wps = 5; 98 wpa_s->wps_freq = freq; 99 wpa_s->normal_scans = 0; 100 wpa_s->reassociate = 1; 101 wpa_supplicant_req_scan(wpa_s, 0, 0); 102 return 1; 103 } 104 105 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) { 106 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting " 107 "for external credential processing"); 108 wpas_clear_wps(wpa_s); 109 wpa_supplicant_deauthenticate(wpa_s, 110 WLAN_REASON_DEAUTH_LEAVING); 111 return 1; 112 } 113 114 return 0; 115 } 116 117 118 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s, 119 struct wpa_ssid *ssid, 120 const struct wps_credential *cred) 121 { 122 struct wpa_driver_capa capa; 123 struct wpa_bss *bss; 124 const u8 *ie; 125 struct wpa_ie_data adv; 126 int wpa2 = 0, ccmp = 0; 127 128 /* 129 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in 130 * case they are configured for mixed mode operation (WPA+WPA2 and 131 * TKIP+CCMP). Try to use scan results to figure out whether the AP 132 * actually supports stronger security and select that if the client 133 * has support for it, too. 134 */ 135 136 if (wpa_drv_get_capa(wpa_s, &capa)) 137 return; /* Unknown what driver supports */ 138 139 if (ssid->ssid == NULL) 140 return; 141 bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len); 142 if (bss == NULL) { 143 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS " 144 "table - use credential as-is"); 145 return; 146 } 147 148 wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table"); 149 150 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 151 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) { 152 wpa2 = 1; 153 if (adv.pairwise_cipher & WPA_CIPHER_CCMP) 154 ccmp = 1; 155 } else { 156 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 157 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 && 158 adv.pairwise_cipher & WPA_CIPHER_CCMP) 159 ccmp = 1; 160 } 161 162 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) && 163 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) { 164 /* 165 * TODO: This could be the initial AP configuration and the 166 * Beacon contents could change shortly. Should request a new 167 * scan and delay addition of the network until the updated 168 * scan results are available. 169 */ 170 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA " 171 "support - use credential as-is"); 172 return; 173 } 174 175 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) && 176 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) && 177 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) { 178 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential " 179 "based on scan results"); 180 if (wpa_s->conf->ap_scan == 1) 181 ssid->pairwise_cipher |= WPA_CIPHER_CCMP; 182 else 183 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 184 } 185 186 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) && 187 (ssid->proto & WPA_PROTO_WPA) && 188 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) { 189 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential " 190 "based on scan results"); 191 if (wpa_s->conf->ap_scan == 1) 192 ssid->proto |= WPA_PROTO_RSN; 193 else 194 ssid->proto = WPA_PROTO_RSN; 195 } 196 } 197 198 199 static int wpa_supplicant_wps_cred(void *ctx, 200 const struct wps_credential *cred) 201 { 202 struct wpa_supplicant *wpa_s = ctx; 203 struct wpa_ssid *ssid = wpa_s->current_ssid; 204 u8 key_idx = 0; 205 u16 auth_type; 206 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 207 int registrar = 0; 208 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 209 210 if ((wpa_s->conf->wps_cred_processing == 1 || 211 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) { 212 size_t blen = cred->cred_attr_len * 2 + 1; 213 char *buf = os_malloc(blen); 214 if (buf) { 215 wpa_snprintf_hex(buf, blen, 216 cred->cred_attr, cred->cred_attr_len); 217 wpa_msg(wpa_s, MSG_INFO, "%s%s", 218 WPS_EVENT_CRED_RECEIVED, buf); 219 os_free(buf); 220 } 221 222 wpas_notify_wps_credential(wpa_s, cred); 223 } else 224 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED); 225 226 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", 227 cred->cred_attr, cred->cred_attr_len); 228 229 if (wpa_s->conf->wps_cred_processing == 1) 230 return 0; 231 232 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); 233 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", 234 cred->auth_type); 235 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); 236 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); 237 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", 238 cred->key, cred->key_len); 239 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, 240 MAC2STR(cred->mac_addr)); 241 242 auth_type = cred->auth_type; 243 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { 244 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode " 245 "auth_type into WPA2PSK"); 246 auth_type = WPS_AUTH_WPA2PSK; 247 } 248 249 if (auth_type != WPS_AUTH_OPEN && 250 auth_type != WPS_AUTH_SHARED && 251 auth_type != WPS_AUTH_WPAPSK && 252 auth_type != WPS_AUTH_WPA2PSK) { 253 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for " 254 "unsupported authentication type 0x%x", 255 auth_type); 256 return 0; 257 } 258 259 if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) { 260 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) { 261 wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with " 262 "invalid Network Key length %lu", 263 (unsigned long) cred->key_len); 264 return -1; 265 } 266 } 267 268 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 269 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based " 270 "on the received credential"); 271 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 272 if (ssid->eap.identity && 273 ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN && 274 os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR, 275 WSC_ID_REGISTRAR_LEN) == 0) 276 registrar = 1; 277 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 278 os_free(ssid->eap.identity); 279 ssid->eap.identity = NULL; 280 ssid->eap.identity_len = 0; 281 os_free(ssid->eap.phase1); 282 ssid->eap.phase1 = NULL; 283 os_free(ssid->eap.eap_methods); 284 ssid->eap.eap_methods = NULL; 285 if (!ssid->p2p_group) { 286 ssid->temporary = 0; 287 ssid->bssid_set = 0; 288 } 289 ssid->disabled_until.sec = 0; 290 ssid->disabled_until.usec = 0; 291 ssid->auth_failures = 0; 292 } else { 293 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the " 294 "received credential"); 295 ssid = wpa_config_add_network(wpa_s->conf); 296 if (ssid == NULL) 297 return -1; 298 wpas_notify_network_added(wpa_s, ssid); 299 } 300 301 wpa_config_set_network_defaults(ssid); 302 303 os_free(ssid->ssid); 304 ssid->ssid = os_malloc(cred->ssid_len); 305 if (ssid->ssid) { 306 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len); 307 ssid->ssid_len = cred->ssid_len; 308 } 309 310 switch (cred->encr_type) { 311 case WPS_ENCR_NONE: 312 break; 313 case WPS_ENCR_WEP: 314 if (cred->key_len <= 0) 315 break; 316 if (cred->key_len != 5 && cred->key_len != 13 && 317 cred->key_len != 10 && cred->key_len != 26) { 318 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length " 319 "%lu", (unsigned long) cred->key_len); 320 return -1; 321 } 322 if (cred->key_idx > NUM_WEP_KEYS) { 323 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d", 324 cred->key_idx); 325 return -1; 326 } 327 if (cred->key_idx) 328 key_idx = cred->key_idx - 1; 329 if (cred->key_len == 10 || cred->key_len == 26) { 330 if (hexstr2bin((char *) cred->key, 331 ssid->wep_key[key_idx], 332 cred->key_len / 2) < 0) { 333 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key " 334 "%d", key_idx); 335 return -1; 336 } 337 ssid->wep_key_len[key_idx] = cred->key_len / 2; 338 } else { 339 os_memcpy(ssid->wep_key[key_idx], cred->key, 340 cred->key_len); 341 ssid->wep_key_len[key_idx] = cred->key_len; 342 } 343 ssid->wep_tx_keyidx = key_idx; 344 break; 345 case WPS_ENCR_TKIP: 346 ssid->pairwise_cipher = WPA_CIPHER_TKIP; 347 break; 348 case WPS_ENCR_AES: 349 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 350 break; 351 } 352 353 switch (auth_type) { 354 case WPS_AUTH_OPEN: 355 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 356 ssid->key_mgmt = WPA_KEY_MGMT_NONE; 357 ssid->proto = 0; 358 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 359 if (registrar) { 360 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK 361 "id=%d - Credentials for an open " 362 "network disabled by default - use " 363 "'select_network %d' to enable", 364 ssid->id, ssid->id); 365 ssid->disabled = 1; 366 } 367 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 368 break; 369 case WPS_AUTH_SHARED: 370 ssid->auth_alg = WPA_AUTH_ALG_SHARED; 371 ssid->key_mgmt = WPA_KEY_MGMT_NONE; 372 ssid->proto = 0; 373 break; 374 case WPS_AUTH_WPAPSK: 375 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 376 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 377 ssid->proto = WPA_PROTO_WPA; 378 break; 379 case WPS_AUTH_WPA2PSK: 380 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 381 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 382 ssid->proto = WPA_PROTO_RSN; 383 break; 384 } 385 386 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) { 387 if (cred->key_len == 2 * PMK_LEN) { 388 if (hexstr2bin((const char *) cred->key, ssid->psk, 389 PMK_LEN)) { 390 wpa_printf(MSG_ERROR, "WPS: Invalid Network " 391 "Key"); 392 return -1; 393 } 394 ssid->psk_set = 1; 395 ssid->export_keys = 1; 396 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) { 397 os_free(ssid->passphrase); 398 ssid->passphrase = os_malloc(cred->key_len + 1); 399 if (ssid->passphrase == NULL) 400 return -1; 401 os_memcpy(ssid->passphrase, cred->key, cred->key_len); 402 ssid->passphrase[cred->key_len] = '\0'; 403 wpa_config_update_psk(ssid); 404 ssid->export_keys = 1; 405 } else { 406 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key " 407 "length %lu", 408 (unsigned long) cred->key_len); 409 return -1; 410 } 411 } 412 413 wpas_wps_security_workaround(wpa_s, ssid, cred); 414 415 if (cred->ap_channel) 416 wpa_s->wps_ap_channel = cred->ap_channel; 417 418 #ifndef CONFIG_NO_CONFIG_WRITE 419 if (wpa_s->conf->update_config && 420 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 421 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration"); 422 return -1; 423 } 424 #endif /* CONFIG_NO_CONFIG_WRITE */ 425 426 /* 427 * Optimize the post-WPS scan based on the channel used during 428 * the provisioning in case EAP-Failure is not received. 429 */ 430 wpa_s->after_wps = 5; 431 wpa_s->wps_freq = wpa_s->assoc_freq; 432 433 return 0; 434 } 435 436 437 #ifdef CONFIG_P2P 438 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) 439 { 440 struct wpa_supplicant *wpa_s = eloop_ctx; 441 wpas_p2p_notif_pbc_overlap(wpa_s); 442 } 443 #endif /* CONFIG_P2P */ 444 445 446 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s, 447 struct wps_event_m2d *m2d) 448 { 449 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D 450 "dev_password_id=%d config_error=%d", 451 m2d->dev_password_id, m2d->config_error); 452 wpas_notify_wps_event_m2d(wpa_s, m2d); 453 #ifdef CONFIG_P2P 454 if (wpa_s->parent && wpa_s->parent != wpa_s) { 455 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D 456 "dev_password_id=%d config_error=%d", 457 m2d->dev_password_id, m2d->config_error); 458 } 459 if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) { 460 /* 461 * Notify P2P from eloop timeout to avoid issues with the 462 * interface getting removed while processing a message. 463 */ 464 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s, 465 NULL); 466 } 467 #endif /* CONFIG_P2P */ 468 } 469 470 471 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = { 472 "No Error", /* WPS_EI_NO_ERROR */ 473 "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */ 474 "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */ 475 }; 476 477 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s, 478 struct wps_event_fail *fail) 479 { 480 if (fail->error_indication > 0 && 481 fail->error_indication < NUM_WPS_EI_VALUES) { 482 wpa_msg(wpa_s, MSG_INFO, 483 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 484 fail->msg, fail->config_error, fail->error_indication, 485 wps_event_fail_reason[fail->error_indication]); 486 if (wpa_s->parent && wpa_s->parent != wpa_s) 487 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL 488 "msg=%d config_error=%d reason=%d (%s)", 489 fail->msg, fail->config_error, 490 fail->error_indication, 491 wps_event_fail_reason[fail->error_indication]); 492 } else { 493 wpa_msg(wpa_s, MSG_INFO, 494 WPS_EVENT_FAIL "msg=%d config_error=%d", 495 fail->msg, fail->config_error); 496 if (wpa_s->parent && wpa_s->parent != wpa_s) 497 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL 498 "msg=%d config_error=%d", 499 fail->msg, fail->config_error); 500 } 501 wpas_clear_wps(wpa_s); 502 wpas_notify_wps_event_fail(wpa_s, fail); 503 #ifdef CONFIG_P2P 504 wpas_p2p_wps_failed(wpa_s, fail); 505 #endif /* CONFIG_P2P */ 506 } 507 508 509 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx); 510 511 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s) 512 { 513 struct wpa_ssid *ssid; 514 int changed = 0; 515 516 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL); 517 518 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 519 if (ssid->disabled_for_connect && ssid->disabled) { 520 ssid->disabled_for_connect = 0; 521 ssid->disabled = 0; 522 wpas_notify_network_enabled_changed(wpa_s, ssid); 523 changed++; 524 } 525 } 526 527 if (changed) { 528 #ifndef CONFIG_NO_CONFIG_WRITE 529 if (wpa_s->conf->update_config && 530 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 531 wpa_printf(MSG_DEBUG, "WPS: Failed to update " 532 "configuration"); 533 } 534 #endif /* CONFIG_NO_CONFIG_WRITE */ 535 } 536 } 537 538 539 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx) 540 { 541 struct wpa_supplicant *wpa_s = eloop_ctx; 542 /* Enable the networks disabled during wpas_wps_reassoc */ 543 wpas_wps_reenable_networks(wpa_s); 544 } 545 546 547 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s) 548 { 549 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS); 550 wpa_s->wps_success = 1; 551 wpas_notify_wps_event_success(wpa_s); 552 553 /* 554 * Enable the networks disabled during wpas_wps_reassoc after 10 555 * seconds. The 10 seconds timer is to allow the data connection to be 556 * formed before allowing other networks to be selected. 557 */ 558 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s, 559 NULL); 560 561 #ifdef CONFIG_P2P 562 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0); 563 #endif /* CONFIG_P2P */ 564 } 565 566 567 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s, 568 struct wps_event_er_ap *ap) 569 { 570 char uuid_str[100]; 571 char dev_type[WPS_DEV_TYPE_BUFSIZE]; 572 573 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); 574 if (ap->pri_dev_type) 575 wps_dev_type_bin2str(ap->pri_dev_type, dev_type, 576 sizeof(dev_type)); 577 else 578 dev_type[0] = '\0'; 579 580 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR 581 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|", 582 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state, 583 ap->friendly_name ? ap->friendly_name : "", 584 ap->manufacturer ? ap->manufacturer : "", 585 ap->model_description ? ap->model_description : "", 586 ap->model_name ? ap->model_name : "", 587 ap->manufacturer_url ? ap->manufacturer_url : "", 588 ap->model_url ? ap->model_url : ""); 589 } 590 591 592 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s, 593 struct wps_event_er_ap *ap) 594 { 595 char uuid_str[100]; 596 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); 597 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str); 598 } 599 600 601 static void wpa_supplicant_wps_event_er_enrollee_add( 602 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) 603 { 604 char uuid_str[100]; 605 char dev_type[WPS_DEV_TYPE_BUFSIZE]; 606 607 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); 608 if (enrollee->pri_dev_type) 609 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type, 610 sizeof(dev_type)); 611 else 612 dev_type[0] = '\0'; 613 614 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR 615 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s " 616 "|%s|%s|%s|%s|%s|", 617 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received, 618 enrollee->config_methods, enrollee->dev_passwd_id, dev_type, 619 enrollee->dev_name ? enrollee->dev_name : "", 620 enrollee->manufacturer ? enrollee->manufacturer : "", 621 enrollee->model_name ? enrollee->model_name : "", 622 enrollee->model_number ? enrollee->model_number : "", 623 enrollee->serial_number ? enrollee->serial_number : ""); 624 } 625 626 627 static void wpa_supplicant_wps_event_er_enrollee_remove( 628 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) 629 { 630 char uuid_str[100]; 631 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); 632 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR, 633 uuid_str, MAC2STR(enrollee->mac_addr)); 634 } 635 636 637 static void wpa_supplicant_wps_event_er_ap_settings( 638 struct wpa_supplicant *wpa_s, 639 struct wps_event_er_ap_settings *ap_settings) 640 { 641 char uuid_str[100]; 642 char key_str[65]; 643 const struct wps_credential *cred = ap_settings->cred; 644 645 key_str[0] = '\0'; 646 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { 647 if (cred->key_len >= 8 && cred->key_len <= 64) { 648 os_memcpy(key_str, cred->key, cred->key_len); 649 key_str[cred->key_len] = '\0'; 650 } 651 } 652 653 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str)); 654 /* Use wpa_msg_ctrl to avoid showing the key in debug log */ 655 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS 656 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x " 657 "key=%s", 658 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len), 659 cred->auth_type, cred->encr_type, key_str); 660 } 661 662 663 static void wpa_supplicant_wps_event_er_set_sel_reg( 664 struct wpa_supplicant *wpa_s, 665 struct wps_event_er_set_selected_registrar *ev) 666 { 667 char uuid_str[100]; 668 669 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str)); 670 switch (ev->state) { 671 case WPS_ER_SET_SEL_REG_START: 672 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG 673 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u " 674 "sel_reg_config_methods=0x%x", 675 uuid_str, ev->sel_reg, ev->dev_passwd_id, 676 ev->sel_reg_config_methods); 677 break; 678 case WPS_ER_SET_SEL_REG_DONE: 679 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG 680 "uuid=%s state=DONE", uuid_str); 681 break; 682 case WPS_ER_SET_SEL_REG_FAILED: 683 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG 684 "uuid=%s state=FAILED", uuid_str); 685 break; 686 } 687 } 688 689 690 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event, 691 union wps_event_data *data) 692 { 693 struct wpa_supplicant *wpa_s = ctx; 694 switch (event) { 695 case WPS_EV_M2D: 696 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d); 697 break; 698 case WPS_EV_FAIL: 699 wpa_supplicant_wps_event_fail(wpa_s, &data->fail); 700 break; 701 case WPS_EV_SUCCESS: 702 wpa_supplicant_wps_event_success(wpa_s); 703 break; 704 case WPS_EV_PWD_AUTH_FAIL: 705 #ifdef CONFIG_AP 706 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee) 707 wpa_supplicant_ap_pwd_auth_fail(wpa_s); 708 #endif /* CONFIG_AP */ 709 break; 710 case WPS_EV_PBC_OVERLAP: 711 break; 712 case WPS_EV_PBC_TIMEOUT: 713 break; 714 case WPS_EV_ER_AP_ADD: 715 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap); 716 break; 717 case WPS_EV_ER_AP_REMOVE: 718 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap); 719 break; 720 case WPS_EV_ER_ENROLLEE_ADD: 721 wpa_supplicant_wps_event_er_enrollee_add(wpa_s, 722 &data->enrollee); 723 break; 724 case WPS_EV_ER_ENROLLEE_REMOVE: 725 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s, 726 &data->enrollee); 727 break; 728 case WPS_EV_ER_AP_SETTINGS: 729 wpa_supplicant_wps_event_er_ap_settings(wpa_s, 730 &data->ap_settings); 731 break; 732 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 733 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s, 734 &data->set_sel_reg); 735 break; 736 case WPS_EV_AP_PIN_SUCCESS: 737 break; 738 } 739 } 740 741 742 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid) 743 { 744 if (eap_is_wps_pbc_enrollee(&ssid->eap) || 745 eap_is_wps_pin_enrollee(&ssid->eap)) 746 return WPS_REQ_ENROLLEE; 747 else 748 return WPS_REQ_REGISTRAR; 749 } 750 751 752 static void wpas_clear_wps(struct wpa_supplicant *wpa_s) 753 { 754 int id; 755 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current; 756 757 prev_current = wpa_s->current_ssid; 758 759 /* Enable the networks disabled during wpas_wps_reassoc */ 760 wpas_wps_reenable_networks(wpa_s); 761 762 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 763 764 /* Remove any existing WPS network from configuration */ 765 ssid = wpa_s->conf->ssid; 766 while (ssid) { 767 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 768 if (ssid == wpa_s->current_ssid) { 769 wpa_s->current_ssid = NULL; 770 if (ssid != NULL) 771 wpas_notify_network_changed(wpa_s); 772 } 773 id = ssid->id; 774 remove_ssid = ssid; 775 } else 776 id = -1; 777 ssid = ssid->next; 778 if (id >= 0) { 779 if (prev_current == remove_ssid) { 780 wpa_sm_set_config(wpa_s->wpa, NULL); 781 eapol_sm_notify_config(wpa_s->eapol, NULL, 782 NULL); 783 } 784 wpas_notify_network_removed(wpa_s, remove_ssid); 785 wpa_config_remove_network(wpa_s->conf, id); 786 } 787 } 788 789 wpas_wps_clear_ap_info(wpa_s); 790 } 791 792 793 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx) 794 { 795 struct wpa_supplicant *wpa_s = eloop_ctx; 796 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed " 797 "out"); 798 wpas_clear_wps(wpa_s); 799 } 800 801 802 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s, 803 int registrar, const u8 *bssid) 804 { 805 struct wpa_ssid *ssid; 806 807 ssid = wpa_config_add_network(wpa_s->conf); 808 if (ssid == NULL) 809 return NULL; 810 wpas_notify_network_added(wpa_s, ssid); 811 wpa_config_set_network_defaults(ssid); 812 ssid->temporary = 1; 813 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 || 814 wpa_config_set(ssid, "eap", "WSC", 0) < 0 || 815 wpa_config_set(ssid, "identity", registrar ? 816 "\"" WSC_ID_REGISTRAR "\"" : 817 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) { 818 wpas_notify_network_removed(wpa_s, ssid); 819 wpa_config_remove_network(wpa_s->conf, ssid->id); 820 return NULL; 821 } 822 823 if (bssid) { 824 #ifndef CONFIG_P2P 825 struct wpa_bss *bss; 826 int count = 0; 827 #endif /* CONFIG_P2P */ 828 829 os_memcpy(ssid->bssid, bssid, ETH_ALEN); 830 ssid->bssid_set = 1; 831 832 /* 833 * Note: With P2P, the SSID may change at the time the WPS 834 * provisioning is started, so better not filter the AP based 835 * on the current SSID in the scan results. 836 */ 837 #ifndef CONFIG_P2P 838 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 839 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0) 840 continue; 841 842 os_free(ssid->ssid); 843 ssid->ssid = os_malloc(bss->ssid_len); 844 if (ssid->ssid == NULL) 845 break; 846 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 847 ssid->ssid_len = bss->ssid_len; 848 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from " 849 "scan results", 850 ssid->ssid, ssid->ssid_len); 851 count++; 852 } 853 854 if (count > 1) { 855 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found " 856 "for the AP; use wildcard"); 857 os_free(ssid->ssid); 858 ssid->ssid = NULL; 859 ssid->ssid_len = 0; 860 } 861 #endif /* CONFIG_P2P */ 862 } 863 864 return ssid; 865 } 866 867 868 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s, 869 struct wpa_ssid *selected, const u8 *bssid) 870 { 871 struct wpa_ssid *ssid; 872 struct wpa_bss *bss; 873 874 wpa_s->known_wps_freq = 0; 875 if (bssid) { 876 bss = wpa_bss_get_bssid(wpa_s, bssid); 877 if (bss && bss->freq > 0) { 878 wpa_s->known_wps_freq = 1; 879 wpa_s->wps_freq = bss->freq; 880 } 881 } 882 883 if (wpa_s->current_ssid) 884 wpa_supplicant_deauthenticate( 885 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 886 887 /* Mark all other networks disabled and trigger reassociation */ 888 ssid = wpa_s->conf->ssid; 889 while (ssid) { 890 int was_disabled = ssid->disabled; 891 ssid->disabled_for_connect = 0; 892 /* 893 * In case the network object corresponds to a persistent group 894 * then do not send out network disabled signal. In addition, 895 * do not change disabled status of persistent network objects 896 * from 2 to 1 should we connect to another network. 897 */ 898 if (was_disabled != 2) { 899 ssid->disabled = ssid != selected; 900 if (was_disabled != ssid->disabled) { 901 if (ssid->disabled) 902 ssid->disabled_for_connect = 1; 903 wpas_notify_network_enabled_changed(wpa_s, 904 ssid); 905 } 906 } 907 ssid = ssid->next; 908 } 909 wpa_s->disconnected = 0; 910 wpa_s->reassociate = 1; 911 wpa_s->scan_runs = 0; 912 wpa_s->normal_scans = 0; 913 wpa_s->wps_success = 0; 914 wpa_s->blacklist_cleared = 0; 915 wpa_supplicant_req_scan(wpa_s, 0, 0); 916 } 917 918 919 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid, 920 int p2p_group) 921 { 922 struct wpa_ssid *ssid; 923 wpas_clear_wps(wpa_s); 924 ssid = wpas_wps_add_network(wpa_s, 0, bssid); 925 if (ssid == NULL) 926 return -1; 927 ssid->temporary = 1; 928 ssid->p2p_group = p2p_group; 929 #ifdef CONFIG_P2P 930 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { 931 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); 932 if (ssid->ssid) { 933 ssid->ssid_len = wpa_s->go_params->ssid_len; 934 os_memcpy(ssid->ssid, wpa_s->go_params->ssid, 935 ssid->ssid_len); 936 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " 937 "SSID", ssid->ssid, ssid->ssid_len); 938 } 939 } 940 #endif /* CONFIG_P2P */ 941 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0); 942 if (wpa_s->wps_fragment_size) 943 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 944 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 945 wpa_s, NULL); 946 wpas_wps_reassoc(wpa_s, ssid, bssid); 947 return 0; 948 } 949 950 951 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid, 952 const char *pin, int p2p_group, u16 dev_pw_id) 953 { 954 struct wpa_ssid *ssid; 955 char val[128]; 956 unsigned int rpin = 0; 957 958 wpas_clear_wps(wpa_s); 959 ssid = wpas_wps_add_network(wpa_s, 0, bssid); 960 if (ssid == NULL) 961 return -1; 962 ssid->temporary = 1; 963 ssid->p2p_group = p2p_group; 964 #ifdef CONFIG_P2P 965 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { 966 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); 967 if (ssid->ssid) { 968 ssid->ssid_len = wpa_s->go_params->ssid_len; 969 os_memcpy(ssid->ssid, wpa_s->go_params->ssid, 970 ssid->ssid_len); 971 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " 972 "SSID", ssid->ssid, ssid->ssid_len); 973 } 974 } 975 #endif /* CONFIG_P2P */ 976 if (pin) 977 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"", 978 pin, dev_pw_id); 979 else { 980 rpin = wps_generate_pin(); 981 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"", 982 rpin, dev_pw_id); 983 } 984 wpa_config_set(ssid, "phase1", val, 0); 985 if (wpa_s->wps_fragment_size) 986 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 987 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 988 wpa_s, NULL); 989 wpa_s->wps_ap_iter = 1; 990 wpas_wps_reassoc(wpa_s, ssid, bssid); 991 return rpin; 992 } 993 994 995 /* Cancel the wps pbc/pin requests */ 996 int wpas_wps_cancel(struct wpa_supplicant *wpa_s) 997 { 998 #ifdef CONFIG_AP 999 if (wpa_s->ap_iface) { 1000 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode"); 1001 return wpa_supplicant_ap_wps_cancel(wpa_s); 1002 } 1003 #endif /* CONFIG_AP */ 1004 1005 if (wpa_s->wpa_state == WPA_SCANNING || 1006 wpa_s->wpa_state == WPA_DISCONNECTED) { 1007 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan"); 1008 wpa_supplicant_cancel_scan(wpa_s); 1009 wpas_clear_wps(wpa_s); 1010 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) { 1011 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - " 1012 "deauthenticate"); 1013 wpa_supplicant_deauthenticate(wpa_s, 1014 WLAN_REASON_DEAUTH_LEAVING); 1015 wpas_clear_wps(wpa_s); 1016 } else { 1017 wpas_wps_reenable_networks(wpa_s); 1018 wpas_wps_clear_ap_info(wpa_s); 1019 } 1020 1021 return 0; 1022 } 1023 1024 1025 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid, 1026 const char *pin, struct wps_new_ap_settings *settings) 1027 { 1028 struct wpa_ssid *ssid; 1029 char val[200]; 1030 char *pos, *end; 1031 int res; 1032 1033 if (!pin) 1034 return -1; 1035 wpas_clear_wps(wpa_s); 1036 ssid = wpas_wps_add_network(wpa_s, 1, bssid); 1037 if (ssid == NULL) 1038 return -1; 1039 ssid->temporary = 1; 1040 pos = val; 1041 end = pos + sizeof(val); 1042 res = os_snprintf(pos, end - pos, "\"pin=%s", pin); 1043 if (res < 0 || res >= end - pos) 1044 return -1; 1045 pos += res; 1046 if (settings) { 1047 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s " 1048 "new_encr=%s new_key=%s", 1049 settings->ssid_hex, settings->auth, 1050 settings->encr, settings->key_hex); 1051 if (res < 0 || res >= end - pos) 1052 return -1; 1053 pos += res; 1054 } 1055 res = os_snprintf(pos, end - pos, "\""); 1056 if (res < 0 || res >= end - pos) 1057 return -1; 1058 wpa_config_set(ssid, "phase1", val, 0); 1059 if (wpa_s->wps_fragment_size) 1060 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 1061 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 1062 wpa_s, NULL); 1063 wpas_wps_reassoc(wpa_s, ssid, bssid); 1064 return 0; 1065 } 1066 1067 1068 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk, 1069 size_t psk_len) 1070 { 1071 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for " 1072 "STA " MACSTR, MAC2STR(mac_addr)); 1073 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len); 1074 1075 /* TODO */ 1076 1077 return 0; 1078 } 1079 1080 1081 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, 1082 const struct wps_device_data *dev) 1083 { 1084 char uuid[40], txt[400]; 1085 int len; 1086 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1087 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 1088 return; 1089 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid); 1090 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR 1091 " [%s|%s|%s|%s|%s|%s]", 1092 uuid, MAC2STR(dev->mac_addr), dev->device_name, 1093 dev->manufacturer, dev->model_name, 1094 dev->model_number, dev->serial_number, 1095 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 1096 sizeof(devtype))); 1097 if (len > 0 && len < (int) sizeof(txt)) 1098 wpa_printf(MSG_INFO, "%s", txt); 1099 } 1100 1101 1102 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id, 1103 u16 sel_reg_config_methods) 1104 { 1105 #ifdef CONFIG_WPS_ER 1106 struct wpa_supplicant *wpa_s = ctx; 1107 1108 if (wpa_s->wps_er == NULL) 1109 return; 1110 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d " 1111 "dev_password_id=%u sel_reg_config_methods=0x%x", 1112 sel_reg, dev_passwd_id, sel_reg_config_methods); 1113 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id, 1114 sel_reg_config_methods); 1115 #endif /* CONFIG_WPS_ER */ 1116 } 1117 1118 1119 static u16 wps_fix_config_methods(u16 config_methods) 1120 { 1121 #ifdef CONFIG_WPS2 1122 if ((config_methods & 1123 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1124 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1125 wpa_printf(MSG_INFO, "WPS: Converting display to " 1126 "virtual_display for WPS 2.0 compliance"); 1127 config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1128 } 1129 if ((config_methods & 1130 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1131 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1132 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1133 "virtual_push_button for WPS 2.0 compliance"); 1134 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1135 } 1136 #endif /* CONFIG_WPS2 */ 1137 1138 return config_methods; 1139 } 1140 1141 1142 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s, 1143 struct wps_context *wps) 1144 { 1145 wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname); 1146 if (is_nil_uuid(wpa_s->conf->uuid)) { 1147 struct wpa_supplicant *first; 1148 first = wpa_s->global->ifaces; 1149 while (first && first->next) 1150 first = first->next; 1151 if (first && first != wpa_s) { 1152 if (wps != wpa_s->global->ifaces->wps) 1153 os_memcpy(wps->uuid, 1154 wpa_s->global->ifaces->wps->uuid, 1155 WPS_UUID_LEN); 1156 wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first " 1157 "interface", wps->uuid, WPS_UUID_LEN); 1158 } else { 1159 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid); 1160 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " 1161 "address", wps->uuid, WPS_UUID_LEN); 1162 } 1163 } else { 1164 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN); 1165 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration", 1166 wps->uuid, WPS_UUID_LEN); 1167 } 1168 } 1169 1170 1171 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s, 1172 struct wps_context *wps) 1173 { 1174 wpabuf_free(wps->dev.vendor_ext_m1); 1175 wps->dev.vendor_ext_m1 = NULL; 1176 1177 if (wpa_s->conf->wps_vendor_ext_m1) { 1178 wps->dev.vendor_ext_m1 = 1179 wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1); 1180 if (!wps->dev.vendor_ext_m1) { 1181 wpa_printf(MSG_ERROR, "WPS: Cannot " 1182 "allocate memory for vendor_ext_m1"); 1183 } 1184 } 1185 } 1186 1187 1188 int wpas_wps_init(struct wpa_supplicant *wpa_s) 1189 { 1190 struct wps_context *wps; 1191 struct wps_registrar_config rcfg; 1192 struct hostapd_hw_modes *modes; 1193 u16 m; 1194 1195 wps = os_zalloc(sizeof(*wps)); 1196 if (wps == NULL) 1197 return -1; 1198 1199 wps->cred_cb = wpa_supplicant_wps_cred; 1200 wps->event_cb = wpa_supplicant_wps_event; 1201 wps->cb_ctx = wpa_s; 1202 1203 wps->dev.device_name = wpa_s->conf->device_name; 1204 wps->dev.manufacturer = wpa_s->conf->manufacturer; 1205 wps->dev.model_name = wpa_s->conf->model_name; 1206 wps->dev.model_number = wpa_s->conf->model_number; 1207 wps->dev.serial_number = wpa_s->conf->serial_number; 1208 wps->config_methods = 1209 wps_config_methods_str2bin(wpa_s->conf->config_methods); 1210 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == 1211 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { 1212 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config " 1213 "methods are not allowed at the same time"); 1214 os_free(wps); 1215 return -1; 1216 } 1217 wps->config_methods = wps_fix_config_methods(wps->config_methods); 1218 wps->dev.config_methods = wps->config_methods; 1219 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, 1220 WPS_DEV_TYPE_LEN); 1221 1222 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 1223 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, 1224 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types); 1225 1226 wpas_wps_set_vendor_ext_m1(wpa_s, wps); 1227 1228 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); 1229 modes = wpa_s->hw.modes; 1230 if (modes) { 1231 for (m = 0; m < wpa_s->hw.num_modes; m++) { 1232 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B || 1233 modes[m].mode == HOSTAPD_MODE_IEEE80211G) 1234 wps->dev.rf_bands |= WPS_RF_24GHZ; 1235 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A) 1236 wps->dev.rf_bands |= WPS_RF_50GHZ; 1237 } 1238 } 1239 if (wps->dev.rf_bands == 0) { 1240 /* 1241 * Default to claiming support for both bands if the driver 1242 * does not provide support for fetching supported bands. 1243 */ 1244 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; 1245 } 1246 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN); 1247 wpas_wps_set_uuid(wpa_s, wps); 1248 1249 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1250 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1251 1252 os_memset(&rcfg, 0, sizeof(rcfg)); 1253 rcfg.new_psk_cb = wpas_wps_new_psk_cb; 1254 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb; 1255 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb; 1256 rcfg.cb_ctx = wpa_s; 1257 1258 wps->registrar = wps_registrar_init(wps, &rcfg); 1259 if (wps->registrar == NULL) { 1260 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar"); 1261 os_free(wps); 1262 return -1; 1263 } 1264 1265 wpa_s->wps = wps; 1266 1267 return 0; 1268 } 1269 1270 1271 void wpas_wps_deinit(struct wpa_supplicant *wpa_s) 1272 { 1273 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 1274 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL); 1275 wpas_wps_clear_ap_info(wpa_s); 1276 1277 if (wpa_s->wps == NULL) 1278 return; 1279 1280 #ifdef CONFIG_WPS_ER 1281 wps_er_deinit(wpa_s->wps_er, NULL, NULL); 1282 wpa_s->wps_er = NULL; 1283 #endif /* CONFIG_WPS_ER */ 1284 1285 wps_registrar_deinit(wpa_s->wps->registrar); 1286 wpabuf_free(wpa_s->wps->dh_pubkey); 1287 wpabuf_free(wpa_s->wps->dh_privkey); 1288 wpabuf_free(wpa_s->wps->dev.vendor_ext_m1); 1289 os_free(wpa_s->wps->network_key); 1290 os_free(wpa_s->wps); 1291 wpa_s->wps = NULL; 1292 } 1293 1294 1295 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s, 1296 struct wpa_ssid *ssid, struct wpa_bss *bss) 1297 { 1298 struct wpabuf *wps_ie; 1299 1300 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) 1301 return -1; 1302 1303 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1304 if (eap_is_wps_pbc_enrollee(&ssid->eap)) { 1305 if (!wps_ie) { 1306 wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); 1307 return 0; 1308 } 1309 1310 if (!wps_is_selected_pbc_registrar(wps_ie)) { 1311 wpa_printf(MSG_DEBUG, " skip - WPS AP " 1312 "without active PBC Registrar"); 1313 wpabuf_free(wps_ie); 1314 return 0; 1315 } 1316 1317 /* TODO: overlap detection */ 1318 wpa_printf(MSG_DEBUG, " selected based on WPS IE " 1319 "(Active PBC)"); 1320 wpabuf_free(wps_ie); 1321 return 1; 1322 } 1323 1324 if (eap_is_wps_pin_enrollee(&ssid->eap)) { 1325 if (!wps_ie) { 1326 wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); 1327 return 0; 1328 } 1329 1330 /* 1331 * Start with WPS APs that advertise our address as an 1332 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and 1333 * allow any WPS AP after couple of scans since some APs do not 1334 * set Selected Registrar attribute properly when using 1335 * external Registrar. 1336 */ 1337 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) { 1338 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) { 1339 wpa_printf(MSG_DEBUG, " skip - WPS AP " 1340 "without active PIN Registrar"); 1341 wpabuf_free(wps_ie); 1342 return 0; 1343 } 1344 wpa_printf(MSG_DEBUG, " selected based on WPS IE"); 1345 } else { 1346 wpa_printf(MSG_DEBUG, " selected based on WPS IE " 1347 "(Authorized MAC or Active PIN)"); 1348 } 1349 wpabuf_free(wps_ie); 1350 return 1; 1351 } 1352 1353 if (wps_ie) { 1354 wpa_printf(MSG_DEBUG, " selected based on WPS IE"); 1355 wpabuf_free(wps_ie); 1356 return 1; 1357 } 1358 1359 return -1; 1360 } 1361 1362 1363 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s, 1364 struct wpa_ssid *ssid, 1365 struct wpa_bss *bss) 1366 { 1367 struct wpabuf *wps_ie = NULL; 1368 int ret = 0; 1369 1370 if (eap_is_wps_pbc_enrollee(&ssid->eap)) { 1371 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1372 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) { 1373 /* allow wildcard SSID for WPS PBC */ 1374 ret = 1; 1375 } 1376 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) { 1377 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1378 if (wps_ie && 1379 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) || 1380 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) { 1381 /* allow wildcard SSID for WPS PIN */ 1382 ret = 1; 1383 } 1384 } 1385 1386 if (!ret && ssid->bssid_set && 1387 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) { 1388 /* allow wildcard SSID due to hardcoded BSSID match */ 1389 ret = 1; 1390 } 1391 1392 #ifdef CONFIG_WPS_STRICT 1393 if (wps_ie) { 1394 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len > 1395 0, bss->bssid) < 0) 1396 ret = 0; 1397 if (bss->beacon_ie_len) { 1398 struct wpabuf *bcn_wps; 1399 bcn_wps = wpa_bss_get_vendor_ie_multi_beacon( 1400 bss, WPS_IE_VENDOR_TYPE); 1401 if (bcn_wps == NULL) { 1402 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE " 1403 "missing from AP Beacon"); 1404 ret = 0; 1405 } else { 1406 if (wps_validate_beacon(wps_ie) < 0) 1407 ret = 0; 1408 wpabuf_free(bcn_wps); 1409 } 1410 } 1411 } 1412 #endif /* CONFIG_WPS_STRICT */ 1413 1414 wpabuf_free(wps_ie); 1415 1416 return ret; 1417 } 1418 1419 1420 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s, 1421 struct wpa_bss *selected, struct wpa_ssid *ssid) 1422 { 1423 const u8 *sel_uuid, *uuid; 1424 struct wpabuf *wps_ie; 1425 int ret = 0; 1426 struct wpa_bss *bss; 1427 1428 if (!eap_is_wps_pbc_enrollee(&ssid->eap)) 1429 return 0; 1430 1431 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is " 1432 "present in scan results; selected BSSID " MACSTR, 1433 MAC2STR(selected->bssid)); 1434 1435 /* Make sure that only one AP is in active PBC mode */ 1436 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE); 1437 if (wps_ie) { 1438 sel_uuid = wps_get_uuid_e(wps_ie); 1439 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS", 1440 sel_uuid, UUID_LEN); 1441 } else { 1442 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include " 1443 "WPS IE?!"); 1444 sel_uuid = NULL; 1445 } 1446 1447 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1448 struct wpabuf *ie; 1449 if (bss == selected) 1450 continue; 1451 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1452 if (!ie) 1453 continue; 1454 if (!wps_is_selected_pbc_registrar(ie)) { 1455 wpabuf_free(ie); 1456 continue; 1457 } 1458 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: " 1459 MACSTR, MAC2STR(bss->bssid)); 1460 uuid = wps_get_uuid_e(ie); 1461 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS", 1462 uuid, UUID_LEN); 1463 if (sel_uuid == NULL || uuid == NULL || 1464 os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) { 1465 ret = 1; /* PBC overlap */ 1466 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: " 1467 MACSTR " and " MACSTR, 1468 MAC2STR(selected->bssid), 1469 MAC2STR(bss->bssid)); 1470 wpabuf_free(ie); 1471 break; 1472 } 1473 1474 /* TODO: verify that this is reasonable dual-band situation */ 1475 1476 wpabuf_free(ie); 1477 } 1478 1479 wpabuf_free(wps_ie); 1480 1481 return ret; 1482 } 1483 1484 1485 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s) 1486 { 1487 struct wpa_bss *bss; 1488 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0; 1489 1490 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED) 1491 return; 1492 1493 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1494 struct wpabuf *ie; 1495 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1496 if (!ie) 1497 continue; 1498 if (wps_is_selected_pbc_registrar(ie)) 1499 pbc++; 1500 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0)) 1501 auth++; 1502 else if (wps_is_selected_pin_registrar(ie)) 1503 pin++; 1504 else 1505 wps++; 1506 wpabuf_free(ie); 1507 } 1508 1509 if (pbc) 1510 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC); 1511 else if (auth) 1512 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH); 1513 else if (pin) 1514 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN); 1515 else if (wps) 1516 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE); 1517 } 1518 1519 1520 int wpas_wps_searching(struct wpa_supplicant *wpa_s) 1521 { 1522 struct wpa_ssid *ssid; 1523 1524 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1525 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled) 1526 return 1; 1527 } 1528 1529 return 0; 1530 } 1531 1532 1533 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 1534 char *end) 1535 { 1536 struct wpabuf *wps_ie; 1537 int ret; 1538 1539 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA); 1540 if (wps_ie == NULL) 1541 return 0; 1542 1543 ret = wps_attr_text(wps_ie, buf, end); 1544 wpabuf_free(wps_ie); 1545 return ret; 1546 } 1547 1548 1549 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter) 1550 { 1551 #ifdef CONFIG_WPS_ER 1552 if (wpa_s->wps_er) { 1553 wps_er_refresh(wpa_s->wps_er); 1554 return 0; 1555 } 1556 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter); 1557 if (wpa_s->wps_er == NULL) 1558 return -1; 1559 return 0; 1560 #else /* CONFIG_WPS_ER */ 1561 return 0; 1562 #endif /* CONFIG_WPS_ER */ 1563 } 1564 1565 1566 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s) 1567 { 1568 #ifdef CONFIG_WPS_ER 1569 wps_er_deinit(wpa_s->wps_er, NULL, NULL); 1570 wpa_s->wps_er = NULL; 1571 #endif /* CONFIG_WPS_ER */ 1572 return 0; 1573 } 1574 1575 1576 #ifdef CONFIG_WPS_ER 1577 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr, 1578 const char *uuid, const char *pin) 1579 { 1580 u8 u[UUID_LEN]; 1581 int any = 0; 1582 1583 if (os_strcmp(uuid, "any") == 0) 1584 any = 1; 1585 else if (uuid_str2bin(uuid, u)) 1586 return -1; 1587 return wps_registrar_add_pin(wpa_s->wps->registrar, addr, 1588 any ? NULL : u, 1589 (const u8 *) pin, os_strlen(pin), 300); 1590 } 1591 1592 1593 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid) 1594 { 1595 u8 u[UUID_LEN]; 1596 1597 if (uuid_str2bin(uuid, u)) 1598 return -1; 1599 return wps_er_pbc(wpa_s->wps_er, u); 1600 } 1601 1602 1603 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid, 1604 const char *pin) 1605 { 1606 u8 u[UUID_LEN]; 1607 1608 if (uuid_str2bin(uuid, u)) 1609 return -1; 1610 return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin, 1611 os_strlen(pin)); 1612 } 1613 1614 1615 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid, 1616 int id) 1617 { 1618 u8 u[UUID_LEN]; 1619 struct wpa_ssid *ssid; 1620 struct wps_credential cred; 1621 1622 if (uuid_str2bin(uuid, u)) 1623 return -1; 1624 ssid = wpa_config_get_network(wpa_s->conf, id); 1625 if (ssid == NULL || ssid->ssid == NULL) 1626 return -1; 1627 1628 os_memset(&cred, 0, sizeof(cred)); 1629 if (ssid->ssid_len > 32) 1630 return -1; 1631 os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len); 1632 cred.ssid_len = ssid->ssid_len; 1633 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) { 1634 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ? 1635 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK; 1636 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP) 1637 cred.encr_type = WPS_ENCR_AES; 1638 else 1639 cred.encr_type = WPS_ENCR_TKIP; 1640 if (ssid->passphrase) { 1641 cred.key_len = os_strlen(ssid->passphrase); 1642 if (cred.key_len >= 64) 1643 return -1; 1644 os_memcpy(cred.key, ssid->passphrase, cred.key_len); 1645 } else if (ssid->psk_set) { 1646 cred.key_len = 32; 1647 os_memcpy(cred.key, ssid->psk, 32); 1648 } else 1649 return -1; 1650 } else { 1651 cred.auth_type = WPS_AUTH_OPEN; 1652 cred.encr_type = WPS_ENCR_NONE; 1653 } 1654 return wps_er_set_config(wpa_s->wps_er, u, &cred); 1655 } 1656 1657 1658 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid, 1659 const char *pin, struct wps_new_ap_settings *settings) 1660 { 1661 u8 u[UUID_LEN]; 1662 struct wps_credential cred; 1663 size_t len; 1664 1665 if (uuid_str2bin(uuid, u)) 1666 return -1; 1667 if (settings->ssid_hex == NULL || settings->auth == NULL || 1668 settings->encr == NULL || settings->key_hex == NULL) 1669 return -1; 1670 1671 os_memset(&cred, 0, sizeof(cred)); 1672 len = os_strlen(settings->ssid_hex); 1673 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1674 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2)) 1675 return -1; 1676 cred.ssid_len = len / 2; 1677 1678 len = os_strlen(settings->key_hex); 1679 if ((len & 1) || len > 2 * sizeof(cred.key) || 1680 hexstr2bin(settings->key_hex, cred.key, len / 2)) 1681 return -1; 1682 cred.key_len = len / 2; 1683 1684 if (os_strcmp(settings->auth, "OPEN") == 0) 1685 cred.auth_type = WPS_AUTH_OPEN; 1686 else if (os_strcmp(settings->auth, "WPAPSK") == 0) 1687 cred.auth_type = WPS_AUTH_WPAPSK; 1688 else if (os_strcmp(settings->auth, "WPA2PSK") == 0) 1689 cred.auth_type = WPS_AUTH_WPA2PSK; 1690 else 1691 return -1; 1692 1693 if (os_strcmp(settings->encr, "NONE") == 0) 1694 cred.encr_type = WPS_ENCR_NONE; 1695 else if (os_strcmp(settings->encr, "WEP") == 0) 1696 cred.encr_type = WPS_ENCR_WEP; 1697 else if (os_strcmp(settings->encr, "TKIP") == 0) 1698 cred.encr_type = WPS_ENCR_TKIP; 1699 else if (os_strcmp(settings->encr, "CCMP") == 0) 1700 cred.encr_type = WPS_ENCR_AES; 1701 else 1702 return -1; 1703 1704 return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin, 1705 os_strlen(pin), &cred); 1706 } 1707 1708 1709 #ifdef CONFIG_WPS_NFC 1710 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s, 1711 int ndef, const char *uuid) 1712 { 1713 struct wpabuf *ret; 1714 u8 u[UUID_LEN]; 1715 1716 if (!wpa_s->wps_er) 1717 return NULL; 1718 1719 if (uuid_str2bin(uuid, u)) 1720 return NULL; 1721 1722 ret = wps_er_nfc_config_token(wpa_s->wps_er, u); 1723 if (ndef && ret) { 1724 struct wpabuf *tmp; 1725 tmp = ndef_build_wifi(ret); 1726 wpabuf_free(ret); 1727 if (tmp == NULL) 1728 return NULL; 1729 ret = tmp; 1730 } 1731 1732 return ret; 1733 } 1734 #endif /* CONFIG_WPS_NFC */ 1735 1736 1737 static int callbacks_pending = 0; 1738 1739 static void wpas_wps_terminate_cb(void *ctx) 1740 { 1741 wpa_printf(MSG_DEBUG, "WPS ER: Terminated"); 1742 if (--callbacks_pending <= 0) 1743 eloop_terminate(); 1744 } 1745 #endif /* CONFIG_WPS_ER */ 1746 1747 1748 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s) 1749 { 1750 #ifdef CONFIG_WPS_ER 1751 if (wpa_s->wps_er) { 1752 callbacks_pending++; 1753 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s); 1754 wpa_s->wps_er = NULL; 1755 return 1; 1756 } 1757 #endif /* CONFIG_WPS_ER */ 1758 return 0; 1759 } 1760 1761 1762 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s) 1763 { 1764 struct wpa_ssid *ssid; 1765 1766 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1767 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS) 1768 return 1; 1769 } 1770 1771 return 0; 1772 } 1773 1774 1775 void wpas_wps_update_config(struct wpa_supplicant *wpa_s) 1776 { 1777 struct wps_context *wps = wpa_s->wps; 1778 1779 if (wps == NULL) 1780 return; 1781 1782 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) { 1783 wps->config_methods = wps_config_methods_str2bin( 1784 wpa_s->conf->config_methods); 1785 if ((wps->config_methods & 1786 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == 1787 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { 1788 wpa_printf(MSG_ERROR, "WPS: Both Label and Display " 1789 "config methods are not allowed at the " 1790 "same time"); 1791 wps->config_methods &= ~WPS_CONFIG_LABEL; 1792 } 1793 } 1794 wps->config_methods = wps_fix_config_methods(wps->config_methods); 1795 wps->dev.config_methods = wps->config_methods; 1796 1797 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 1798 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, 1799 WPS_DEV_TYPE_LEN); 1800 1801 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) { 1802 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 1803 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, 1804 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN); 1805 } 1806 1807 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) 1808 wpas_wps_set_vendor_ext_m1(wpa_s, wps); 1809 1810 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION) 1811 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); 1812 1813 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) 1814 wpas_wps_set_uuid(wpa_s, wps); 1815 1816 if (wpa_s->conf->changed_parameters & 1817 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) { 1818 /* Update pointers to make sure they refer current values */ 1819 wps->dev.device_name = wpa_s->conf->device_name; 1820 wps->dev.manufacturer = wpa_s->conf->manufacturer; 1821 wps->dev.model_name = wpa_s->conf->model_name; 1822 wps->dev.model_number = wpa_s->conf->model_number; 1823 wps->dev.serial_number = wpa_s->conf->serial_number; 1824 } 1825 } 1826 1827 1828 #ifdef CONFIG_WPS_NFC 1829 1830 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef) 1831 { 1832 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id, 1833 &wpa_s->conf->wps_nfc_dh_pubkey, 1834 &wpa_s->conf->wps_nfc_dh_privkey, 1835 &wpa_s->conf->wps_nfc_dev_pw); 1836 } 1837 1838 1839 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid) 1840 { 1841 struct wps_context *wps = wpa_s->wps; 1842 char pw[32 * 2 + 1]; 1843 1844 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 1845 wpa_s->conf->wps_nfc_dh_privkey == NULL || 1846 wpa_s->conf->wps_nfc_dev_pw == NULL) 1847 return -1; 1848 1849 dh5_free(wps->dh_ctx); 1850 wpabuf_free(wps->dh_pubkey); 1851 wpabuf_free(wps->dh_privkey); 1852 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 1853 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 1854 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) { 1855 wps->dh_ctx = NULL; 1856 wpabuf_free(wps->dh_pubkey); 1857 wps->dh_pubkey = NULL; 1858 wpabuf_free(wps->dh_privkey); 1859 wps->dh_privkey = NULL; 1860 return -1; 1861 } 1862 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey); 1863 if (wps->dh_ctx == NULL) 1864 return -1; 1865 1866 wpa_snprintf_hex_uppercase(pw, sizeof(pw), 1867 wpabuf_head(wpa_s->conf->wps_nfc_dev_pw), 1868 wpabuf_len(wpa_s->conf->wps_nfc_dev_pw)); 1869 return wpas_wps_start_pin(wpa_s, bssid, pw, 0, 1870 wpa_s->conf->wps_nfc_dev_pw_id); 1871 } 1872 1873 1874 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s, 1875 struct wps_parse_attr *attr) 1876 { 1877 wpa_s->wps_ap_channel = 0; 1878 1879 if (wps_oob_use_cred(wpa_s->wps, attr) < 0) 1880 return -1; 1881 1882 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 1883 return 0; 1884 1885 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network " 1886 "based on the received credential added"); 1887 wpa_s->normal_scans = 0; 1888 wpa_supplicant_reinit_autoscan(wpa_s); 1889 if (wpa_s->wps_ap_channel) { 1890 u16 chan = wpa_s->wps_ap_channel; 1891 int freq = 0; 1892 1893 if (chan >= 1 && chan <= 13) 1894 freq = 2407 + 5 * chan; 1895 else if (chan == 14) 1896 freq = 2484; 1897 else if (chan >= 30) 1898 freq = 5000 + 5 * chan; 1899 1900 if (freq) { 1901 wpa_printf(MSG_DEBUG, "WPS: Credential indicated " 1902 "AP channel %u -> %u MHz", chan, freq); 1903 wpa_s->after_wps = 5; 1904 wpa_s->wps_freq = freq; 1905 } 1906 } 1907 wpa_s->disconnected = 0; 1908 wpa_s->reassociate = 1; 1909 wpa_supplicant_req_scan(wpa_s, 0, 0); 1910 1911 return 0; 1912 } 1913 1914 1915 #ifdef CONFIG_WPS_ER 1916 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s, 1917 struct wps_parse_attr *attr) 1918 { 1919 return wps_registrar_add_nfc_password_token( 1920 wpa_s->wps->registrar, attr->oob_dev_password, 1921 attr->oob_dev_password_len); 1922 } 1923 #endif /* CONFIG_WPS_ER */ 1924 1925 1926 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s, 1927 const struct wpabuf *wps) 1928 { 1929 struct wps_parse_attr attr; 1930 1931 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 1932 1933 if (wps_parse_msg(wps, &attr)) { 1934 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 1935 return -1; 1936 } 1937 1938 if (attr.num_cred) 1939 return wpas_wps_use_cred(wpa_s, &attr); 1940 1941 #ifdef CONFIG_WPS_ER 1942 if (attr.oob_dev_password) 1943 return wpas_wps_add_nfc_password_token(wpa_s, &attr); 1944 #endif /* CONFIG_WPS_ER */ 1945 1946 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 1947 return -1; 1948 } 1949 1950 1951 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s, 1952 const struct wpabuf *data) 1953 { 1954 const struct wpabuf *wps = data; 1955 struct wpabuf *tmp = NULL; 1956 int ret; 1957 1958 if (wpabuf_len(data) < 4) 1959 return -1; 1960 1961 if (*wpabuf_head_u8(data) != 0x10) { 1962 /* Assume this contains full NDEF record */ 1963 tmp = ndef_parse_wifi(data); 1964 if (tmp == NULL) { 1965 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 1966 return -1; 1967 } 1968 wps = tmp; 1969 } 1970 1971 ret = wpas_wps_nfc_tag_process(wpa_s, wps); 1972 wpabuf_free(tmp); 1973 return ret; 1974 } 1975 1976 1977 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s) 1978 { 1979 return ndef_build_wifi_hr(); 1980 } 1981 1982 1983 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s) 1984 { 1985 return NULL; 1986 } 1987 1988 1989 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s, 1990 const struct wpabuf *data) 1991 { 1992 /* TODO */ 1993 return -1; 1994 } 1995 1996 1997 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s, 1998 const struct wpabuf *data) 1999 { 2000 struct wpabuf *wps; 2001 int ret; 2002 2003 wps = ndef_parse_wifi(data); 2004 if (wps == NULL) 2005 return -1; 2006 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 2007 "payload from NFC connection handover"); 2008 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps); 2009 ret = wpas_wps_nfc_tag_process(wpa_s, wps); 2010 wpabuf_free(wps); 2011 2012 return ret; 2013 } 2014 2015 #endif /* CONFIG_WPS_NFC */ 2016 2017 2018 extern int wpa_debug_level; 2019 2020 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s) 2021 { 2022 size_t i; 2023 struct os_time now; 2024 2025 if (wpa_debug_level > MSG_DEBUG) 2026 return; 2027 2028 if (wpa_s->wps_ap == NULL) 2029 return; 2030 2031 os_get_time(&now); 2032 2033 for (i = 0; i < wpa_s->num_wps_ap; i++) { 2034 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 2035 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid); 2036 2037 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d " 2038 "tries=%d last_attempt=%d sec ago blacklist=%d", 2039 (int) i, MAC2STR(ap->bssid), ap->type, ap->tries, 2040 ap->last_attempt.sec > 0 ? 2041 (int) now.sec - (int) ap->last_attempt.sec : -1, 2042 e ? e->count : 0); 2043 } 2044 } 2045 2046 2047 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s, 2048 const u8 *bssid) 2049 { 2050 size_t i; 2051 2052 if (wpa_s->wps_ap == NULL) 2053 return NULL; 2054 2055 for (i = 0; i < wpa_s->num_wps_ap; i++) { 2056 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 2057 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0) 2058 return ap; 2059 } 2060 2061 return NULL; 2062 } 2063 2064 2065 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s, 2066 struct wpa_scan_res *res) 2067 { 2068 struct wpabuf *wps; 2069 enum wps_ap_info_type type; 2070 struct wps_ap_info *ap; 2071 int r; 2072 2073 if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL) 2074 return; 2075 2076 wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE); 2077 if (wps == NULL) 2078 return; 2079 2080 r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1); 2081 if (r == 2) 2082 type = WPS_AP_SEL_REG_OUR; 2083 else if (r == 1) 2084 type = WPS_AP_SEL_REG; 2085 else 2086 type = WPS_AP_NOT_SEL_REG; 2087 2088 wpabuf_free(wps); 2089 2090 ap = wpas_wps_get_ap_info(wpa_s, res->bssid); 2091 if (ap) { 2092 if (ap->type != type) { 2093 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR 2094 " changed type %d -> %d", 2095 MAC2STR(res->bssid), ap->type, type); 2096 ap->type = type; 2097 if (type != WPS_AP_NOT_SEL_REG) 2098 wpa_blacklist_del(wpa_s, ap->bssid); 2099 } 2100 return; 2101 } 2102 2103 ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1, 2104 sizeof(struct wps_ap_info)); 2105 if (ap == NULL) 2106 return; 2107 2108 wpa_s->wps_ap = ap; 2109 ap = &wpa_s->wps_ap[wpa_s->num_wps_ap]; 2110 wpa_s->num_wps_ap++; 2111 2112 os_memset(ap, 0, sizeof(*ap)); 2113 os_memcpy(ap->bssid, res->bssid, ETH_ALEN); 2114 ap->type = type; 2115 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added", 2116 MAC2STR(ap->bssid), ap->type); 2117 } 2118 2119 2120 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s, 2121 struct wpa_scan_results *scan_res) 2122 { 2123 size_t i; 2124 2125 for (i = 0; i < scan_res->num; i++) 2126 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]); 2127 2128 wpas_wps_dump_ap_info(wpa_s); 2129 } 2130 2131 2132 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid) 2133 { 2134 struct wps_ap_info *ap; 2135 if (!wpa_s->wps_ap_iter) 2136 return; 2137 ap = wpas_wps_get_ap_info(wpa_s, bssid); 2138 if (ap == NULL) 2139 return; 2140 ap->tries++; 2141 os_get_time(&ap->last_attempt); 2142 } 2143