1 /* 2 * wpa_supplicant / WPS integration 3 * Copyright (c) 2008-2010, Jouni Malinen <j (at) w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15 #include "includes.h" 16 17 #include "common.h" 18 #include "eloop.h" 19 #include "uuid.h" 20 #include "crypto/dh_group5.h" 21 #include "common/ieee802_11_defs.h" 22 #include "common/ieee802_11_common.h" 23 #include "common/wpa_common.h" 24 #include "common/wpa_ctrl.h" 25 #include "eap_common/eap_wsc_common.h" 26 #include "eap_peer/eap.h" 27 #include "eapol_supp/eapol_supp_sm.h" 28 #include "rsn_supp/wpa.h" 29 #include "config.h" 30 #include "wpa_supplicant_i.h" 31 #include "driver_i.h" 32 #include "notify.h" 33 #include "blacklist.h" 34 #include "bss.h" 35 #include "scan.h" 36 #include "ap.h" 37 #include "p2p/p2p.h" 38 #include "p2p_supplicant.h" 39 #include "wps_supplicant.h" 40 41 42 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG 43 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3 44 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */ 45 46 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx); 47 static void wpas_clear_wps(struct wpa_supplicant *wpa_s); 48 49 50 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s) 51 { 52 if (!wpa_s->wps_success && 53 wpa_s->current_ssid && 54 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) { 55 const u8 *bssid = wpa_s->bssid; 56 if (is_zero_ether_addr(bssid)) 57 bssid = wpa_s->pending_bssid; 58 59 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR 60 " did not succeed - continue trying to find " 61 "suitable AP", MAC2STR(bssid)); 62 wpa_blacklist_add(wpa_s, bssid); 63 64 wpa_supplicant_deauthenticate(wpa_s, 65 WLAN_REASON_DEAUTH_LEAVING); 66 wpa_s->reassociate = 1; 67 wpa_supplicant_req_scan(wpa_s, 68 wpa_s->blacklist_cleared ? 5 : 0, 0); 69 wpa_s->blacklist_cleared = 0; 70 return 1; 71 } 72 73 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 74 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success) 75 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL); 76 77 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid && 78 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 79 int disabled = wpa_s->current_ssid->disabled; 80 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - " 81 "try to associate with the received credential"); 82 wpa_supplicant_deauthenticate(wpa_s, 83 WLAN_REASON_DEAUTH_LEAVING); 84 if (disabled) { 85 wpa_printf(MSG_DEBUG, "WPS: Current network is " 86 "disabled - wait for user to enable"); 87 return 1; 88 } 89 wpa_s->after_wps = 5; 90 wpa_s->wps_freq = wpa_s->assoc_freq; 91 wpa_s->reassociate = 1; 92 wpa_supplicant_req_scan(wpa_s, 0, 0); 93 return 1; 94 } 95 96 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) { 97 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting " 98 "for external credential processing"); 99 wpas_clear_wps(wpa_s); 100 wpa_supplicant_deauthenticate(wpa_s, 101 WLAN_REASON_DEAUTH_LEAVING); 102 return 1; 103 } 104 105 return 0; 106 } 107 108 109 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s, 110 struct wpa_ssid *ssid, 111 const struct wps_credential *cred) 112 { 113 struct wpa_driver_capa capa; 114 struct wpa_bss *bss; 115 const u8 *ie; 116 struct wpa_ie_data adv; 117 int wpa2 = 0, ccmp = 0; 118 119 /* 120 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in 121 * case they are configured for mixed mode operation (WPA+WPA2 and 122 * TKIP+CCMP). Try to use scan results to figure out whether the AP 123 * actually supports stronger security and select that if the client 124 * has support for it, too. 125 */ 126 127 if (wpa_drv_get_capa(wpa_s, &capa)) 128 return; /* Unknown what driver supports */ 129 130 bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len); 131 if (bss == NULL) { 132 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS " 133 "table - use credential as-is"); 134 return; 135 } 136 137 wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table"); 138 139 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 140 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) { 141 wpa2 = 1; 142 if (adv.pairwise_cipher & WPA_CIPHER_CCMP) 143 ccmp = 1; 144 } else { 145 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 146 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 && 147 adv.pairwise_cipher & WPA_CIPHER_CCMP) 148 ccmp = 1; 149 } 150 151 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) && 152 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) { 153 /* 154 * TODO: This could be the initial AP configuration and the 155 * Beacon contents could change shortly. Should request a new 156 * scan and delay addition of the network until the updated 157 * scan results are available. 158 */ 159 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA " 160 "support - use credential as-is"); 161 return; 162 } 163 164 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) && 165 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) && 166 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) { 167 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential " 168 "based on scan results"); 169 if (wpa_s->conf->ap_scan == 1) 170 ssid->pairwise_cipher |= WPA_CIPHER_CCMP; 171 else 172 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 173 } 174 175 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) && 176 (ssid->proto & WPA_PROTO_WPA) && 177 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) { 178 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential " 179 "based on scan results"); 180 if (wpa_s->conf->ap_scan == 1) 181 ssid->proto |= WPA_PROTO_RSN; 182 else 183 ssid->proto = WPA_PROTO_RSN; 184 } 185 } 186 187 188 static int wpa_supplicant_wps_cred(void *ctx, 189 const struct wps_credential *cred) 190 { 191 struct wpa_supplicant *wpa_s = ctx; 192 struct wpa_ssid *ssid = wpa_s->current_ssid; 193 u8 key_idx = 0; 194 u16 auth_type; 195 int registrar = 0; 196 197 if ((wpa_s->conf->wps_cred_processing == 1 || 198 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) { 199 size_t blen = cred->cred_attr_len * 2 + 1; 200 char *buf = os_malloc(blen); 201 if (buf) { 202 wpa_snprintf_hex(buf, blen, 203 cred->cred_attr, cred->cred_attr_len); 204 wpa_msg(wpa_s, MSG_INFO, "%s%s", 205 WPS_EVENT_CRED_RECEIVED, buf); 206 os_free(buf); 207 } 208 209 wpas_notify_wps_credential(wpa_s, cred); 210 } else 211 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED); 212 213 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", 214 cred->cred_attr, cred->cred_attr_len); 215 216 if (wpa_s->conf->wps_cred_processing == 1) 217 return 0; 218 219 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); 220 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", 221 cred->auth_type); 222 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); 223 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); 224 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", 225 cred->key, cred->key_len); 226 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, 227 MAC2STR(cred->mac_addr)); 228 229 auth_type = cred->auth_type; 230 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { 231 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode " 232 "auth_type into WPA2PSK"); 233 auth_type = WPS_AUTH_WPA2PSK; 234 } 235 236 if (auth_type != WPS_AUTH_OPEN && 237 auth_type != WPS_AUTH_SHARED && 238 auth_type != WPS_AUTH_WPAPSK && 239 auth_type != WPS_AUTH_WPA2PSK) { 240 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for " 241 "unsupported authentication type 0x%x", 242 auth_type); 243 return 0; 244 } 245 246 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 247 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based " 248 "on the received credential"); 249 if (ssid->eap.identity && 250 ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN && 251 os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR, 252 WSC_ID_REGISTRAR_LEN) == 0) 253 registrar = 1; 254 os_free(ssid->eap.identity); 255 ssid->eap.identity = NULL; 256 ssid->eap.identity_len = 0; 257 os_free(ssid->eap.phase1); 258 ssid->eap.phase1 = NULL; 259 os_free(ssid->eap.eap_methods); 260 ssid->eap.eap_methods = NULL; 261 if (!ssid->p2p_group) 262 ssid->temporary = 0; 263 } else { 264 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the " 265 "received credential"); 266 ssid = wpa_config_add_network(wpa_s->conf); 267 if (ssid == NULL) 268 return -1; 269 wpas_notify_network_added(wpa_s, ssid); 270 } 271 272 wpa_config_set_network_defaults(ssid); 273 274 os_free(ssid->ssid); 275 ssid->ssid = os_malloc(cred->ssid_len); 276 if (ssid->ssid) { 277 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len); 278 ssid->ssid_len = cred->ssid_len; 279 } 280 281 switch (cred->encr_type) { 282 case WPS_ENCR_NONE: 283 break; 284 case WPS_ENCR_WEP: 285 if (cred->key_len <= 0) 286 break; 287 if (cred->key_len != 5 && cred->key_len != 13 && 288 cred->key_len != 10 && cred->key_len != 26) { 289 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length " 290 "%lu", (unsigned long) cred->key_len); 291 return -1; 292 } 293 if (cred->key_idx > NUM_WEP_KEYS) { 294 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d", 295 cred->key_idx); 296 return -1; 297 } 298 if (cred->key_idx) 299 key_idx = cred->key_idx - 1; 300 if (cred->key_len == 10 || cred->key_len == 26) { 301 if (hexstr2bin((char *) cred->key, 302 ssid->wep_key[key_idx], 303 cred->key_len / 2) < 0) { 304 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key " 305 "%d", key_idx); 306 return -1; 307 } 308 ssid->wep_key_len[key_idx] = cred->key_len / 2; 309 } else { 310 os_memcpy(ssid->wep_key[key_idx], cred->key, 311 cred->key_len); 312 ssid->wep_key_len[key_idx] = cred->key_len; 313 } 314 ssid->wep_tx_keyidx = key_idx; 315 break; 316 case WPS_ENCR_TKIP: 317 ssid->pairwise_cipher = WPA_CIPHER_TKIP; 318 break; 319 case WPS_ENCR_AES: 320 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 321 break; 322 } 323 324 switch (auth_type) { 325 case WPS_AUTH_OPEN: 326 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 327 ssid->key_mgmt = WPA_KEY_MGMT_NONE; 328 ssid->proto = 0; 329 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 330 if (registrar) { 331 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK 332 "id=%d - Credentials for an open " 333 "network disabled by default - use " 334 "'select_network %d' to enable", 335 ssid->id, ssid->id); 336 ssid->disabled = 1; 337 } 338 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 339 break; 340 case WPS_AUTH_SHARED: 341 ssid->auth_alg = WPA_AUTH_ALG_SHARED; 342 ssid->key_mgmt = WPA_KEY_MGMT_NONE; 343 ssid->proto = 0; 344 break; 345 case WPS_AUTH_WPAPSK: 346 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 347 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 348 ssid->proto = WPA_PROTO_WPA; 349 break; 350 case WPS_AUTH_WPA: 351 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 352 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X; 353 ssid->proto = WPA_PROTO_WPA; 354 break; 355 case WPS_AUTH_WPA2: 356 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 357 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X; 358 ssid->proto = WPA_PROTO_RSN; 359 break; 360 case WPS_AUTH_WPA2PSK: 361 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 362 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 363 ssid->proto = WPA_PROTO_RSN; 364 break; 365 } 366 367 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) { 368 if (cred->key_len == 2 * PMK_LEN) { 369 if (hexstr2bin((const char *) cred->key, ssid->psk, 370 PMK_LEN)) { 371 wpa_printf(MSG_ERROR, "WPS: Invalid Network " 372 "Key"); 373 return -1; 374 } 375 ssid->psk_set = 1; 376 ssid->export_keys = 1; 377 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) { 378 os_free(ssid->passphrase); 379 ssid->passphrase = os_malloc(cred->key_len + 1); 380 if (ssid->passphrase == NULL) 381 return -1; 382 os_memcpy(ssid->passphrase, cred->key, cred->key_len); 383 ssid->passphrase[cred->key_len] = '\0'; 384 wpa_config_update_psk(ssid); 385 ssid->export_keys = 1; 386 } else { 387 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key " 388 "length %lu", 389 (unsigned long) cred->key_len); 390 return -1; 391 } 392 } 393 394 wpas_wps_security_workaround(wpa_s, ssid, cred); 395 396 #ifndef CONFIG_NO_CONFIG_WRITE 397 if (wpa_s->conf->update_config && 398 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 399 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration"); 400 return -1; 401 } 402 #endif /* CONFIG_NO_CONFIG_WRITE */ 403 404 return 0; 405 } 406 407 408 #ifdef CONFIG_P2P 409 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) 410 { 411 struct wpa_supplicant *wpa_s = eloop_ctx; 412 wpas_p2p_notif_pbc_overlap(wpa_s); 413 } 414 #endif /* CONFIG_P2P */ 415 416 417 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s, 418 struct wps_event_m2d *m2d) 419 { 420 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D 421 "dev_password_id=%d config_error=%d", 422 m2d->dev_password_id, m2d->config_error); 423 wpas_notify_wps_event_m2d(wpa_s, m2d); 424 #ifdef CONFIG_P2P 425 if (wpa_s->parent && wpa_s->parent != wpa_s) { 426 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D 427 "dev_password_id=%d config_error=%d", 428 m2d->dev_password_id, m2d->config_error); 429 } 430 if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) { 431 /* 432 * Notify P2P from eloop timeout to avoid issues with the 433 * interface getting removed while processing a message. 434 */ 435 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s, 436 NULL); 437 } 438 #endif /* CONFIG_P2P */ 439 } 440 441 442 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = { 443 "No Error", /* WPS_EI_NO_ERROR */ 444 "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */ 445 "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */ 446 }; 447 448 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s, 449 struct wps_event_fail *fail) 450 { 451 if (fail->error_indication > 0 && 452 fail->error_indication < NUM_WPS_EI_VALUES) { 453 wpa_msg(wpa_s, MSG_INFO, 454 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 455 fail->msg, fail->config_error, fail->error_indication, 456 wps_event_fail_reason[fail->error_indication]); 457 if (wpa_s->parent && wpa_s->parent != wpa_s) 458 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL 459 "msg=%d config_error=%d reason=%d (%s)", 460 fail->msg, fail->config_error, 461 fail->error_indication, 462 wps_event_fail_reason[fail->error_indication]); 463 } else { 464 wpa_msg(wpa_s, MSG_INFO, 465 WPS_EVENT_FAIL "msg=%d config_error=%d", 466 fail->msg, fail->config_error); 467 if (wpa_s->parent && wpa_s->parent != wpa_s) 468 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL 469 "msg=%d config_error=%d", 470 fail->msg, fail->config_error); 471 } 472 wpas_clear_wps(wpa_s); 473 wpas_notify_wps_event_fail(wpa_s, fail); 474 #ifdef CONFIG_P2P 475 wpas_p2p_wps_failed(wpa_s, fail); 476 #endif /* CONFIG_P2P */ 477 } 478 479 480 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s) 481 { 482 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS); 483 wpa_s->wps_success = 1; 484 wpas_notify_wps_event_success(wpa_s); 485 #ifdef CONFIG_P2P 486 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0); 487 #endif /* CONFIG_P2P */ 488 } 489 490 491 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s, 492 struct wps_event_er_ap *ap) 493 { 494 char uuid_str[100]; 495 char dev_type[WPS_DEV_TYPE_BUFSIZE]; 496 497 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); 498 if (ap->pri_dev_type) 499 wps_dev_type_bin2str(ap->pri_dev_type, dev_type, 500 sizeof(dev_type)); 501 else 502 dev_type[0] = '\0'; 503 504 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR 505 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|", 506 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state, 507 ap->friendly_name ? ap->friendly_name : "", 508 ap->manufacturer ? ap->manufacturer : "", 509 ap->model_description ? ap->model_description : "", 510 ap->model_name ? ap->model_name : "", 511 ap->manufacturer_url ? ap->manufacturer_url : "", 512 ap->model_url ? ap->model_url : ""); 513 } 514 515 516 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s, 517 struct wps_event_er_ap *ap) 518 { 519 char uuid_str[100]; 520 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); 521 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str); 522 } 523 524 525 static void wpa_supplicant_wps_event_er_enrollee_add( 526 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) 527 { 528 char uuid_str[100]; 529 char dev_type[WPS_DEV_TYPE_BUFSIZE]; 530 531 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); 532 if (enrollee->pri_dev_type) 533 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type, 534 sizeof(dev_type)); 535 else 536 dev_type[0] = '\0'; 537 538 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR 539 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s " 540 "|%s|%s|%s|%s|%s|", 541 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received, 542 enrollee->config_methods, enrollee->dev_passwd_id, dev_type, 543 enrollee->dev_name ? enrollee->dev_name : "", 544 enrollee->manufacturer ? enrollee->manufacturer : "", 545 enrollee->model_name ? enrollee->model_name : "", 546 enrollee->model_number ? enrollee->model_number : "", 547 enrollee->serial_number ? enrollee->serial_number : ""); 548 } 549 550 551 static void wpa_supplicant_wps_event_er_enrollee_remove( 552 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) 553 { 554 char uuid_str[100]; 555 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); 556 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR, 557 uuid_str, MAC2STR(enrollee->mac_addr)); 558 } 559 560 561 static void wpa_supplicant_wps_event_er_ap_settings( 562 struct wpa_supplicant *wpa_s, 563 struct wps_event_er_ap_settings *ap_settings) 564 { 565 char uuid_str[100]; 566 char key_str[65]; 567 const struct wps_credential *cred = ap_settings->cred; 568 569 key_str[0] = '\0'; 570 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { 571 if (cred->key_len >= 8 && cred->key_len <= 64) { 572 os_memcpy(key_str, cred->key, cred->key_len); 573 key_str[cred->key_len] = '\0'; 574 } 575 } 576 577 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str)); 578 /* Use wpa_msg_ctrl to avoid showing the key in debug log */ 579 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS 580 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x " 581 "key=%s", 582 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len), 583 cred->auth_type, cred->encr_type, key_str); 584 } 585 586 587 static void wpa_supplicant_wps_event_er_set_sel_reg( 588 struct wpa_supplicant *wpa_s, 589 struct wps_event_er_set_selected_registrar *ev) 590 { 591 char uuid_str[100]; 592 593 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str)); 594 switch (ev->state) { 595 case WPS_ER_SET_SEL_REG_START: 596 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG 597 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u " 598 "sel_reg_config_methods=0x%x", 599 uuid_str, ev->sel_reg, ev->dev_passwd_id, 600 ev->sel_reg_config_methods); 601 break; 602 case WPS_ER_SET_SEL_REG_DONE: 603 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG 604 "uuid=%s state=DONE", uuid_str); 605 break; 606 case WPS_ER_SET_SEL_REG_FAILED: 607 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG 608 "uuid=%s state=FAILED", uuid_str); 609 break; 610 } 611 } 612 613 614 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event, 615 union wps_event_data *data) 616 { 617 struct wpa_supplicant *wpa_s = ctx; 618 switch (event) { 619 case WPS_EV_M2D: 620 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d); 621 break; 622 case WPS_EV_FAIL: 623 wpa_supplicant_wps_event_fail(wpa_s, &data->fail); 624 break; 625 case WPS_EV_SUCCESS: 626 wpa_supplicant_wps_event_success(wpa_s); 627 break; 628 case WPS_EV_PWD_AUTH_FAIL: 629 #ifdef CONFIG_AP 630 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee) 631 wpa_supplicant_ap_pwd_auth_fail(wpa_s); 632 #endif /* CONFIG_AP */ 633 break; 634 case WPS_EV_PBC_OVERLAP: 635 break; 636 case WPS_EV_PBC_TIMEOUT: 637 break; 638 case WPS_EV_ER_AP_ADD: 639 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap); 640 break; 641 case WPS_EV_ER_AP_REMOVE: 642 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap); 643 break; 644 case WPS_EV_ER_ENROLLEE_ADD: 645 wpa_supplicant_wps_event_er_enrollee_add(wpa_s, 646 &data->enrollee); 647 break; 648 case WPS_EV_ER_ENROLLEE_REMOVE: 649 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s, 650 &data->enrollee); 651 break; 652 case WPS_EV_ER_AP_SETTINGS: 653 wpa_supplicant_wps_event_er_ap_settings(wpa_s, 654 &data->ap_settings); 655 break; 656 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 657 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s, 658 &data->set_sel_reg); 659 break; 660 } 661 } 662 663 664 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid) 665 { 666 if (eap_is_wps_pbc_enrollee(&ssid->eap) || 667 eap_is_wps_pin_enrollee(&ssid->eap)) 668 return WPS_REQ_ENROLLEE; 669 else 670 return WPS_REQ_REGISTRAR; 671 } 672 673 674 static void wpas_clear_wps(struct wpa_supplicant *wpa_s) 675 { 676 int id; 677 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current; 678 679 prev_current = wpa_s->current_ssid; 680 681 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 682 683 /* Remove any existing WPS network from configuration */ 684 ssid = wpa_s->conf->ssid; 685 while (ssid) { 686 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 687 if (ssid == wpa_s->current_ssid) { 688 wpa_s->current_ssid = NULL; 689 if (ssid != NULL) 690 wpas_notify_network_changed(wpa_s); 691 } 692 id = ssid->id; 693 remove_ssid = ssid; 694 } else 695 id = -1; 696 ssid = ssid->next; 697 if (id >= 0) { 698 if (prev_current == remove_ssid) { 699 wpa_sm_set_config(wpa_s->wpa, NULL); 700 eapol_sm_notify_config(wpa_s->eapol, NULL, 701 NULL); 702 } 703 wpas_notify_network_removed(wpa_s, remove_ssid); 704 wpa_config_remove_network(wpa_s->conf, id); 705 } 706 } 707 } 708 709 710 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx) 711 { 712 struct wpa_supplicant *wpa_s = eloop_ctx; 713 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed " 714 "out"); 715 wpas_clear_wps(wpa_s); 716 } 717 718 719 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s, 720 int registrar, const u8 *bssid) 721 { 722 struct wpa_ssid *ssid; 723 724 ssid = wpa_config_add_network(wpa_s->conf); 725 if (ssid == NULL) 726 return NULL; 727 wpas_notify_network_added(wpa_s, ssid); 728 wpa_config_set_network_defaults(ssid); 729 ssid->temporary = 1; 730 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 || 731 wpa_config_set(ssid, "eap", "WSC", 0) < 0 || 732 wpa_config_set(ssid, "identity", registrar ? 733 "\"" WSC_ID_REGISTRAR "\"" : 734 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) { 735 wpas_notify_network_removed(wpa_s, ssid); 736 wpa_config_remove_network(wpa_s->conf, ssid->id); 737 return NULL; 738 } 739 740 if (bssid) { 741 #ifndef CONFIG_P2P 742 struct wpa_bss *bss; 743 int count = 0; 744 #endif /* CONFIG_P2P */ 745 746 os_memcpy(ssid->bssid, bssid, ETH_ALEN); 747 ssid->bssid_set = 1; 748 749 /* 750 * Note: With P2P, the SSID may change at the time the WPS 751 * provisioning is started, so better not filter the AP based 752 * on the current SSID in the scan results. 753 */ 754 #ifndef CONFIG_P2P 755 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 756 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0) 757 continue; 758 759 os_free(ssid->ssid); 760 ssid->ssid = os_malloc(bss->ssid_len); 761 if (ssid->ssid == NULL) 762 break; 763 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 764 ssid->ssid_len = bss->ssid_len; 765 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from " 766 "scan results", 767 ssid->ssid, ssid->ssid_len); 768 count++; 769 } 770 771 if (count > 1) { 772 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found " 773 "for the AP; use wildcard"); 774 os_free(ssid->ssid); 775 ssid->ssid = NULL; 776 ssid->ssid_len = 0; 777 } 778 #endif /* CONFIG_P2P */ 779 } 780 781 return ssid; 782 } 783 784 785 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s, 786 struct wpa_ssid *selected) 787 { 788 struct wpa_ssid *ssid; 789 790 /* Mark all other networks disabled and trigger reassociation */ 791 ssid = wpa_s->conf->ssid; 792 while (ssid) { 793 int was_disabled = ssid->disabled; 794 /* 795 * In case the network object corresponds to a persistent group 796 * then do not send out network disabled signal. In addition, 797 * do not change disabled status of persistent network objects 798 * from 2 to 1 should we connect to another network. 799 */ 800 if (was_disabled != 2) { 801 ssid->disabled = ssid != selected; 802 if (was_disabled != ssid->disabled) 803 wpas_notify_network_enabled_changed(wpa_s, 804 ssid); 805 } 806 ssid = ssid->next; 807 } 808 wpa_s->disconnected = 0; 809 wpa_s->reassociate = 1; 810 wpa_s->scan_runs = 0; 811 wpa_s->wps_success = 0; 812 wpa_s->blacklist_cleared = 0; 813 wpa_supplicant_req_scan(wpa_s, 0, 0); 814 } 815 816 817 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid, 818 int p2p_group) 819 { 820 struct wpa_ssid *ssid; 821 wpas_clear_wps(wpa_s); 822 ssid = wpas_wps_add_network(wpa_s, 0, bssid); 823 if (ssid == NULL) 824 return -1; 825 ssid->temporary = 1; 826 ssid->p2p_group = p2p_group; 827 #ifdef CONFIG_P2P 828 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { 829 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); 830 if (ssid->ssid) { 831 ssid->ssid_len = wpa_s->go_params->ssid_len; 832 os_memcpy(ssid->ssid, wpa_s->go_params->ssid, 833 ssid->ssid_len); 834 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " 835 "SSID", ssid->ssid, ssid->ssid_len); 836 } 837 } 838 #endif /* CONFIG_P2P */ 839 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0); 840 if (wpa_s->wps_fragment_size) 841 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 842 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 843 wpa_s, NULL); 844 wpas_wps_reassoc(wpa_s, ssid); 845 return 0; 846 } 847 848 849 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid, 850 const char *pin, int p2p_group, u16 dev_pw_id) 851 { 852 struct wpa_ssid *ssid; 853 char val[128]; 854 unsigned int rpin = 0; 855 856 wpas_clear_wps(wpa_s); 857 ssid = wpas_wps_add_network(wpa_s, 0, bssid); 858 if (ssid == NULL) 859 return -1; 860 ssid->temporary = 1; 861 ssid->p2p_group = p2p_group; 862 #ifdef CONFIG_P2P 863 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { 864 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); 865 if (ssid->ssid) { 866 ssid->ssid_len = wpa_s->go_params->ssid_len; 867 os_memcpy(ssid->ssid, wpa_s->go_params->ssid, 868 ssid->ssid_len); 869 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " 870 "SSID", ssid->ssid, ssid->ssid_len); 871 } 872 } 873 #endif /* CONFIG_P2P */ 874 if (pin) 875 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"", 876 pin, dev_pw_id); 877 else { 878 rpin = wps_generate_pin(); 879 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"", 880 rpin, dev_pw_id); 881 } 882 wpa_config_set(ssid, "phase1", val, 0); 883 if (wpa_s->wps_fragment_size) 884 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 885 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 886 wpa_s, NULL); 887 wpas_wps_reassoc(wpa_s, ssid); 888 return rpin; 889 } 890 891 892 /* Cancel the wps pbc/pin requests */ 893 int wpas_wps_cancel(struct wpa_supplicant *wpa_s) 894 { 895 #ifdef CONFIG_AP 896 if (wpa_s->ap_iface) { 897 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode"); 898 return wpa_supplicant_ap_wps_cancel(wpa_s); 899 } 900 #endif /* CONFIG_AP */ 901 902 if (wpa_s->wpa_state == WPA_SCANNING) { 903 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan"); 904 wpa_supplicant_cancel_scan(wpa_s); 905 wpas_clear_wps(wpa_s); 906 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) { 907 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - " 908 "deauthenticate"); 909 wpa_supplicant_deauthenticate(wpa_s, 910 WLAN_REASON_DEAUTH_LEAVING); 911 wpas_clear_wps(wpa_s); 912 } 913 914 return 0; 915 } 916 917 918 #ifdef CONFIG_WPS_OOB 919 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type, 920 char *path, char *method, char *name) 921 { 922 struct wps_context *wps = wpa_s->wps; 923 struct oob_device_data *oob_dev; 924 925 oob_dev = wps_get_oob_device(device_type); 926 if (oob_dev == NULL) 927 return -1; 928 oob_dev->device_path = path; 929 oob_dev->device_name = name; 930 wps->oob_conf.oob_method = wps_get_oob_method(method); 931 932 if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) { 933 /* 934 * Use pre-configured DH keys in order to be able to write the 935 * key hash into the OOB file. 936 */ 937 wpabuf_free(wps->dh_pubkey); 938 wpabuf_free(wps->dh_privkey); 939 wps->dh_privkey = NULL; 940 wps->dh_pubkey = NULL; 941 dh5_free(wps->dh_ctx); 942 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey); 943 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192); 944 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) { 945 wpa_printf(MSG_ERROR, "WPS: Failed to initialize " 946 "Diffie-Hellman handshake"); 947 return -1; 948 } 949 } 950 951 if (wps->oob_conf.oob_method == OOB_METHOD_CRED) 952 wpas_clear_wps(wpa_s); 953 954 if (wps_process_oob(wps, oob_dev, 0) < 0) 955 return -1; 956 957 if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E || 958 wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) && 959 wpas_wps_start_pin(wpa_s, NULL, 960 wpabuf_head(wps->oob_conf.dev_password), 0, 961 DEV_PW_DEFAULT) < 0) 962 return -1; 963 964 return 0; 965 } 966 #endif /* CONFIG_WPS_OOB */ 967 968 969 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid, 970 const char *pin, struct wps_new_ap_settings *settings) 971 { 972 struct wpa_ssid *ssid; 973 char val[200]; 974 char *pos, *end; 975 int res; 976 977 if (!pin) 978 return -1; 979 wpas_clear_wps(wpa_s); 980 ssid = wpas_wps_add_network(wpa_s, 1, bssid); 981 if (ssid == NULL) 982 return -1; 983 ssid->temporary = 1; 984 pos = val; 985 end = pos + sizeof(val); 986 res = os_snprintf(pos, end - pos, "\"pin=%s", pin); 987 if (res < 0 || res >= end - pos) 988 return -1; 989 pos += res; 990 if (settings) { 991 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s " 992 "new_encr=%s new_key=%s", 993 settings->ssid_hex, settings->auth, 994 settings->encr, settings->key_hex); 995 if (res < 0 || res >= end - pos) 996 return -1; 997 pos += res; 998 } 999 res = os_snprintf(pos, end - pos, "\""); 1000 if (res < 0 || res >= end - pos) 1001 return -1; 1002 wpa_config_set(ssid, "phase1", val, 0); 1003 if (wpa_s->wps_fragment_size) 1004 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 1005 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 1006 wpa_s, NULL); 1007 wpas_wps_reassoc(wpa_s, ssid); 1008 return 0; 1009 } 1010 1011 1012 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk, 1013 size_t psk_len) 1014 { 1015 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for " 1016 "STA " MACSTR, MAC2STR(mac_addr)); 1017 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len); 1018 1019 /* TODO */ 1020 1021 return 0; 1022 } 1023 1024 1025 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, 1026 const struct wps_device_data *dev) 1027 { 1028 char uuid[40], txt[400]; 1029 int len; 1030 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1031 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 1032 return; 1033 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid); 1034 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR 1035 " [%s|%s|%s|%s|%s|%s]", 1036 uuid, MAC2STR(dev->mac_addr), dev->device_name, 1037 dev->manufacturer, dev->model_name, 1038 dev->model_number, dev->serial_number, 1039 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 1040 sizeof(devtype))); 1041 if (len > 0 && len < (int) sizeof(txt)) 1042 wpa_printf(MSG_INFO, "%s", txt); 1043 } 1044 1045 1046 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id, 1047 u16 sel_reg_config_methods) 1048 { 1049 #ifdef CONFIG_WPS_ER 1050 struct wpa_supplicant *wpa_s = ctx; 1051 1052 if (wpa_s->wps_er == NULL) 1053 return; 1054 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d " 1055 "dev_password_id=%u sel_reg_config_methods=0x%x", 1056 sel_reg, dev_passwd_id, sel_reg_config_methods); 1057 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id, 1058 sel_reg_config_methods); 1059 #endif /* CONFIG_WPS_ER */ 1060 } 1061 1062 1063 static u16 wps_fix_config_methods(u16 config_methods) 1064 { 1065 #ifdef CONFIG_WPS2 1066 if ((config_methods & 1067 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1068 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1069 wpa_printf(MSG_INFO, "WPS: Converting display to " 1070 "virtual_display for WPS 2.0 compliance"); 1071 config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1072 } 1073 if ((config_methods & 1074 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1075 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1076 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1077 "virtual_push_button for WPS 2.0 compliance"); 1078 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1079 } 1080 #endif /* CONFIG_WPS2 */ 1081 1082 return config_methods; 1083 } 1084 1085 1086 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s, 1087 struct wps_context *wps) 1088 { 1089 wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname); 1090 if (is_nil_uuid(wpa_s->conf->uuid)) { 1091 struct wpa_supplicant *first; 1092 first = wpa_s->global->ifaces; 1093 while (first && first->next) 1094 first = first->next; 1095 if (first && first != wpa_s) { 1096 os_memcpy(wps->uuid, wpa_s->global->ifaces->wps->uuid, 1097 WPS_UUID_LEN); 1098 wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first " 1099 "interface", wps->uuid, WPS_UUID_LEN); 1100 } else { 1101 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid); 1102 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " 1103 "address", wps->uuid, WPS_UUID_LEN); 1104 } 1105 } else { 1106 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN); 1107 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration", 1108 wps->uuid, WPS_UUID_LEN); 1109 } 1110 } 1111 1112 1113 int wpas_wps_init(struct wpa_supplicant *wpa_s) 1114 { 1115 struct wps_context *wps; 1116 struct wps_registrar_config rcfg; 1117 1118 wps = os_zalloc(sizeof(*wps)); 1119 if (wps == NULL) 1120 return -1; 1121 1122 wps->cred_cb = wpa_supplicant_wps_cred; 1123 wps->event_cb = wpa_supplicant_wps_event; 1124 wps->cb_ctx = wpa_s; 1125 1126 wps->dev.device_name = wpa_s->conf->device_name; 1127 wps->dev.manufacturer = wpa_s->conf->manufacturer; 1128 wps->dev.model_name = wpa_s->conf->model_name; 1129 wps->dev.model_number = wpa_s->conf->model_number; 1130 wps->dev.serial_number = wpa_s->conf->serial_number; 1131 wps->config_methods = 1132 wps_config_methods_str2bin(wpa_s->conf->config_methods); 1133 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == 1134 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { 1135 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config " 1136 "methods are not allowed at the same time"); 1137 os_free(wps); 1138 return -1; 1139 } 1140 wps->config_methods = wps_fix_config_methods(wps->config_methods); 1141 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, 1142 WPS_DEV_TYPE_LEN); 1143 1144 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 1145 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, 1146 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types); 1147 1148 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); 1149 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */ 1150 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN); 1151 wpas_wps_set_uuid(wpa_s, wps); 1152 1153 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1154 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1155 1156 os_memset(&rcfg, 0, sizeof(rcfg)); 1157 rcfg.new_psk_cb = wpas_wps_new_psk_cb; 1158 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb; 1159 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb; 1160 rcfg.cb_ctx = wpa_s; 1161 1162 wps->registrar = wps_registrar_init(wps, &rcfg); 1163 if (wps->registrar == NULL) { 1164 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar"); 1165 os_free(wps); 1166 return -1; 1167 } 1168 1169 wpa_s->wps = wps; 1170 1171 return 0; 1172 } 1173 1174 1175 void wpas_wps_deinit(struct wpa_supplicant *wpa_s) 1176 { 1177 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 1178 1179 if (wpa_s->wps == NULL) 1180 return; 1181 1182 #ifdef CONFIG_WPS_ER 1183 wps_er_deinit(wpa_s->wps_er, NULL, NULL); 1184 wpa_s->wps_er = NULL; 1185 #endif /* CONFIG_WPS_ER */ 1186 1187 wps_registrar_deinit(wpa_s->wps->registrar); 1188 wpabuf_free(wpa_s->wps->dh_pubkey); 1189 wpabuf_free(wpa_s->wps->dh_privkey); 1190 wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash); 1191 wpabuf_free(wpa_s->wps->oob_conf.dev_password); 1192 os_free(wpa_s->wps->network_key); 1193 os_free(wpa_s->wps); 1194 wpa_s->wps = NULL; 1195 } 1196 1197 1198 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s, 1199 struct wpa_ssid *ssid, struct wpa_scan_res *bss) 1200 { 1201 struct wpabuf *wps_ie; 1202 1203 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) 1204 return -1; 1205 1206 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1207 if (eap_is_wps_pbc_enrollee(&ssid->eap)) { 1208 if (!wps_ie) { 1209 wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); 1210 return 0; 1211 } 1212 1213 if (!wps_is_selected_pbc_registrar(wps_ie)) { 1214 wpa_printf(MSG_DEBUG, " skip - WPS AP " 1215 "without active PBC Registrar"); 1216 wpabuf_free(wps_ie); 1217 return 0; 1218 } 1219 1220 /* TODO: overlap detection */ 1221 wpa_printf(MSG_DEBUG, " selected based on WPS IE " 1222 "(Active PBC)"); 1223 wpabuf_free(wps_ie); 1224 return 1; 1225 } 1226 1227 if (eap_is_wps_pin_enrollee(&ssid->eap)) { 1228 if (!wps_ie) { 1229 wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); 1230 return 0; 1231 } 1232 1233 /* 1234 * Start with WPS APs that advertise our address as an 1235 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and 1236 * allow any WPS AP after couple of scans since some APs do not 1237 * set Selected Registrar attribute properly when using 1238 * external Registrar. 1239 */ 1240 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) { 1241 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) { 1242 wpa_printf(MSG_DEBUG, " skip - WPS AP " 1243 "without active PIN Registrar"); 1244 wpabuf_free(wps_ie); 1245 return 0; 1246 } 1247 wpa_printf(MSG_DEBUG, " selected based on WPS IE"); 1248 } else { 1249 wpa_printf(MSG_DEBUG, " selected based on WPS IE " 1250 "(Authorized MAC or Active PIN)"); 1251 } 1252 wpabuf_free(wps_ie); 1253 return 1; 1254 } 1255 1256 if (wps_ie) { 1257 wpa_printf(MSG_DEBUG, " selected based on WPS IE"); 1258 wpabuf_free(wps_ie); 1259 return 1; 1260 } 1261 1262 return -1; 1263 } 1264 1265 1266 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s, 1267 struct wpa_ssid *ssid, 1268 struct wpa_scan_res *bss) 1269 { 1270 struct wpabuf *wps_ie = NULL; 1271 int ret = 0; 1272 1273 if (eap_is_wps_pbc_enrollee(&ssid->eap)) { 1274 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1275 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) { 1276 /* allow wildcard SSID for WPS PBC */ 1277 ret = 1; 1278 } 1279 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) { 1280 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1281 if (wps_ie && 1282 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) || 1283 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) { 1284 /* allow wildcard SSID for WPS PIN */ 1285 ret = 1; 1286 } 1287 } 1288 1289 if (!ret && ssid->bssid_set && 1290 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) { 1291 /* allow wildcard SSID due to hardcoded BSSID match */ 1292 ret = 1; 1293 } 1294 1295 #ifdef CONFIG_WPS_STRICT 1296 if (wps_ie) { 1297 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len > 1298 0, bss->bssid) < 0) 1299 ret = 0; 1300 if (bss->beacon_ie_len) { 1301 struct wpabuf *bcn_wps; 1302 bcn_wps = wpa_scan_get_vendor_ie_multi_beacon( 1303 bss, WPS_IE_VENDOR_TYPE); 1304 if (bcn_wps == NULL) { 1305 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE " 1306 "missing from AP Beacon"); 1307 ret = 0; 1308 } else { 1309 if (wps_validate_beacon(wps_ie) < 0) 1310 ret = 0; 1311 wpabuf_free(bcn_wps); 1312 } 1313 } 1314 } 1315 #endif /* CONFIG_WPS_STRICT */ 1316 1317 wpabuf_free(wps_ie); 1318 1319 return ret; 1320 } 1321 1322 1323 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s, 1324 struct wpa_bss *selected, struct wpa_ssid *ssid) 1325 { 1326 const u8 *sel_uuid, *uuid; 1327 struct wpabuf *wps_ie; 1328 int ret = 0; 1329 struct wpa_bss *bss; 1330 1331 if (!eap_is_wps_pbc_enrollee(&ssid->eap)) 1332 return 0; 1333 1334 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is " 1335 "present in scan results; selected BSSID " MACSTR, 1336 MAC2STR(selected->bssid)); 1337 1338 /* Make sure that only one AP is in active PBC mode */ 1339 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE); 1340 if (wps_ie) { 1341 sel_uuid = wps_get_uuid_e(wps_ie); 1342 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS", 1343 sel_uuid, UUID_LEN); 1344 } else { 1345 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include " 1346 "WPS IE?!"); 1347 sel_uuid = NULL; 1348 } 1349 1350 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1351 struct wpabuf *ie; 1352 if (bss == selected) 1353 continue; 1354 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1355 if (!ie) 1356 continue; 1357 if (!wps_is_selected_pbc_registrar(ie)) { 1358 wpabuf_free(ie); 1359 continue; 1360 } 1361 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: " 1362 MACSTR, MAC2STR(bss->bssid)); 1363 uuid = wps_get_uuid_e(ie); 1364 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS", 1365 uuid, UUID_LEN); 1366 if (sel_uuid == NULL || uuid == NULL || 1367 os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) { 1368 ret = 1; /* PBC overlap */ 1369 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: " 1370 MACSTR " and " MACSTR, 1371 MAC2STR(selected->bssid), 1372 MAC2STR(bss->bssid)); 1373 wpabuf_free(ie); 1374 break; 1375 } 1376 1377 /* TODO: verify that this is reasonable dual-band situation */ 1378 1379 wpabuf_free(ie); 1380 } 1381 1382 wpabuf_free(wps_ie); 1383 1384 return ret; 1385 } 1386 1387 1388 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s) 1389 { 1390 struct wpa_bss *bss; 1391 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0; 1392 1393 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED) 1394 return; 1395 1396 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1397 struct wpabuf *ie; 1398 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1399 if (!ie) 1400 continue; 1401 if (wps_is_selected_pbc_registrar(ie)) 1402 pbc++; 1403 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0)) 1404 auth++; 1405 else if (wps_is_selected_pin_registrar(ie)) 1406 pin++; 1407 else 1408 wps++; 1409 wpabuf_free(ie); 1410 } 1411 1412 if (pbc) 1413 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC); 1414 else if (auth) 1415 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH); 1416 else if (pin) 1417 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN); 1418 else if (wps) 1419 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE); 1420 } 1421 1422 1423 int wpas_wps_searching(struct wpa_supplicant *wpa_s) 1424 { 1425 struct wpa_ssid *ssid; 1426 1427 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1428 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled) 1429 return 1; 1430 } 1431 1432 return 0; 1433 } 1434 1435 1436 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 1437 char *end) 1438 { 1439 struct wpabuf *wps_ie; 1440 int ret; 1441 1442 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA); 1443 if (wps_ie == NULL) 1444 return 0; 1445 1446 ret = wps_attr_text(wps_ie, buf, end); 1447 wpabuf_free(wps_ie); 1448 return ret; 1449 } 1450 1451 1452 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter) 1453 { 1454 #ifdef CONFIG_WPS_ER 1455 if (wpa_s->wps_er) { 1456 wps_er_refresh(wpa_s->wps_er); 1457 return 0; 1458 } 1459 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter); 1460 if (wpa_s->wps_er == NULL) 1461 return -1; 1462 return 0; 1463 #else /* CONFIG_WPS_ER */ 1464 return 0; 1465 #endif /* CONFIG_WPS_ER */ 1466 } 1467 1468 1469 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s) 1470 { 1471 #ifdef CONFIG_WPS_ER 1472 wps_er_deinit(wpa_s->wps_er, NULL, NULL); 1473 wpa_s->wps_er = NULL; 1474 #endif /* CONFIG_WPS_ER */ 1475 return 0; 1476 } 1477 1478 1479 #ifdef CONFIG_WPS_ER 1480 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr, 1481 const char *uuid, const char *pin) 1482 { 1483 u8 u[UUID_LEN]; 1484 int any = 0; 1485 1486 if (os_strcmp(uuid, "any") == 0) 1487 any = 1; 1488 else if (uuid_str2bin(uuid, u)) 1489 return -1; 1490 return wps_registrar_add_pin(wpa_s->wps->registrar, addr, 1491 any ? NULL : u, 1492 (const u8 *) pin, os_strlen(pin), 300); 1493 } 1494 1495 1496 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid) 1497 { 1498 u8 u[UUID_LEN]; 1499 1500 if (uuid_str2bin(uuid, u)) 1501 return -1; 1502 return wps_er_pbc(wpa_s->wps_er, u); 1503 } 1504 1505 1506 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid, 1507 const char *pin) 1508 { 1509 u8 u[UUID_LEN]; 1510 1511 if (uuid_str2bin(uuid, u)) 1512 return -1; 1513 return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin, 1514 os_strlen(pin)); 1515 } 1516 1517 1518 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid, 1519 int id) 1520 { 1521 u8 u[UUID_LEN]; 1522 struct wpa_ssid *ssid; 1523 struct wps_credential cred; 1524 1525 if (uuid_str2bin(uuid, u)) 1526 return -1; 1527 ssid = wpa_config_get_network(wpa_s->conf, id); 1528 if (ssid == NULL || ssid->ssid == NULL) 1529 return -1; 1530 1531 os_memset(&cred, 0, sizeof(cred)); 1532 if (ssid->ssid_len > 32) 1533 return -1; 1534 os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len); 1535 cred.ssid_len = ssid->ssid_len; 1536 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) { 1537 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ? 1538 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK; 1539 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP) 1540 cred.encr_type = WPS_ENCR_AES; 1541 else 1542 cred.encr_type = WPS_ENCR_TKIP; 1543 if (ssid->passphrase) { 1544 cred.key_len = os_strlen(ssid->passphrase); 1545 if (cred.key_len >= 64) 1546 return -1; 1547 os_memcpy(cred.key, ssid->passphrase, cred.key_len); 1548 } else if (ssid->psk_set) { 1549 cred.key_len = 32; 1550 os_memcpy(cred.key, ssid->psk, 32); 1551 } else 1552 return -1; 1553 } else { 1554 cred.auth_type = WPS_AUTH_OPEN; 1555 cred.encr_type = WPS_ENCR_NONE; 1556 } 1557 return wps_er_set_config(wpa_s->wps_er, u, &cred); 1558 } 1559 1560 1561 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid, 1562 const char *pin, struct wps_new_ap_settings *settings) 1563 { 1564 u8 u[UUID_LEN]; 1565 struct wps_credential cred; 1566 size_t len; 1567 1568 if (uuid_str2bin(uuid, u)) 1569 return -1; 1570 if (settings->ssid_hex == NULL || settings->auth == NULL || 1571 settings->encr == NULL || settings->key_hex == NULL) 1572 return -1; 1573 1574 os_memset(&cred, 0, sizeof(cred)); 1575 len = os_strlen(settings->ssid_hex); 1576 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1577 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2)) 1578 return -1; 1579 cred.ssid_len = len / 2; 1580 1581 len = os_strlen(settings->key_hex); 1582 if ((len & 1) || len > 2 * sizeof(cred.key) || 1583 hexstr2bin(settings->key_hex, cred.key, len / 2)) 1584 return -1; 1585 cred.key_len = len / 2; 1586 1587 if (os_strcmp(settings->auth, "OPEN") == 0) 1588 cred.auth_type = WPS_AUTH_OPEN; 1589 else if (os_strcmp(settings->auth, "WPAPSK") == 0) 1590 cred.auth_type = WPS_AUTH_WPAPSK; 1591 else if (os_strcmp(settings->auth, "WPA2PSK") == 0) 1592 cred.auth_type = WPS_AUTH_WPA2PSK; 1593 else 1594 return -1; 1595 1596 if (os_strcmp(settings->encr, "NONE") == 0) 1597 cred.encr_type = WPS_ENCR_NONE; 1598 else if (os_strcmp(settings->encr, "WEP") == 0) 1599 cred.encr_type = WPS_ENCR_WEP; 1600 else if (os_strcmp(settings->encr, "TKIP") == 0) 1601 cred.encr_type = WPS_ENCR_TKIP; 1602 else if (os_strcmp(settings->encr, "CCMP") == 0) 1603 cred.encr_type = WPS_ENCR_AES; 1604 else 1605 return -1; 1606 1607 return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin, 1608 os_strlen(pin), &cred); 1609 } 1610 1611 1612 static int callbacks_pending = 0; 1613 1614 static void wpas_wps_terminate_cb(void *ctx) 1615 { 1616 wpa_printf(MSG_DEBUG, "WPS ER: Terminated"); 1617 if (--callbacks_pending <= 0) 1618 eloop_terminate(); 1619 } 1620 #endif /* CONFIG_WPS_ER */ 1621 1622 1623 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s) 1624 { 1625 #ifdef CONFIG_WPS_ER 1626 if (wpa_s->wps_er) { 1627 callbacks_pending++; 1628 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s); 1629 wpa_s->wps_er = NULL; 1630 return 1; 1631 } 1632 #endif /* CONFIG_WPS_ER */ 1633 return 0; 1634 } 1635 1636 1637 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s) 1638 { 1639 struct wpa_ssid *ssid; 1640 1641 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1642 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS) 1643 return 1; 1644 } 1645 1646 return 0; 1647 } 1648 1649 1650 void wpas_wps_update_config(struct wpa_supplicant *wpa_s) 1651 { 1652 struct wps_context *wps = wpa_s->wps; 1653 1654 if (wps == NULL) 1655 return; 1656 1657 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) { 1658 wps->config_methods = wps_config_methods_str2bin( 1659 wpa_s->conf->config_methods); 1660 if ((wps->config_methods & 1661 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == 1662 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { 1663 wpa_printf(MSG_ERROR, "WPS: Both Label and Display " 1664 "config methods are not allowed at the " 1665 "same time"); 1666 wps->config_methods &= ~WPS_CONFIG_LABEL; 1667 } 1668 } 1669 wps->config_methods = wps_fix_config_methods(wps->config_methods); 1670 1671 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 1672 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, 1673 WPS_DEV_TYPE_LEN); 1674 1675 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) { 1676 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 1677 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, 1678 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN); 1679 } 1680 1681 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION) 1682 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); 1683 1684 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) 1685 wpas_wps_set_uuid(wpa_s, wps); 1686 1687 if (wpa_s->conf->changed_parameters & 1688 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) { 1689 /* Update pointers to make sure they refer current values */ 1690 wps->dev.device_name = wpa_s->conf->device_name; 1691 wps->dev.manufacturer = wpa_s->conf->manufacturer; 1692 wps->dev.model_name = wpa_s->conf->model_name; 1693 wps->dev.model_number = wpa_s->conf->model_number; 1694 wps->dev.serial_number = wpa_s->conf->serial_number; 1695 } 1696 } 1697
