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 42static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx); 43static void wpas_clear_wps(struct wpa_supplicant *wpa_s); 44 45 46static 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 55int 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 118static 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 199static 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 (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 260 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based " 261 "on the received credential"); 262#ifdef CONFIG_WPS_REG_DISABLE_OPEN 263 if (ssid->eap.identity && 264 ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN && 265 os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR, 266 WSC_ID_REGISTRAR_LEN) == 0) 267 registrar = 1; 268#endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 269 os_free(ssid->eap.identity); 270 ssid->eap.identity = NULL; 271 ssid->eap.identity_len = 0; 272 os_free(ssid->eap.phase1); 273 ssid->eap.phase1 = NULL; 274 os_free(ssid->eap.eap_methods); 275 ssid->eap.eap_methods = NULL; 276 if (!ssid->p2p_group) { 277 ssid->temporary = 0; 278 ssid->bssid_set = 0; 279 } 280 ssid->disabled_until.sec = 0; 281 ssid->disabled_until.usec = 0; 282 ssid->auth_failures = 0; 283 } else { 284 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the " 285 "received credential"); 286 ssid = wpa_config_add_network(wpa_s->conf); 287 if (ssid == NULL) 288 return -1; 289 wpas_notify_network_added(wpa_s, ssid); 290 } 291 292 wpa_config_set_network_defaults(ssid); 293 294 os_free(ssid->ssid); 295 ssid->ssid = os_malloc(cred->ssid_len); 296 if (ssid->ssid) { 297 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len); 298 ssid->ssid_len = cred->ssid_len; 299 } 300 301 switch (cred->encr_type) { 302 case WPS_ENCR_NONE: 303 break; 304 case WPS_ENCR_WEP: 305 if (cred->key_len <= 0) 306 break; 307 if (cred->key_len != 5 && cred->key_len != 13 && 308 cred->key_len != 10 && cred->key_len != 26) { 309 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length " 310 "%lu", (unsigned long) cred->key_len); 311 return -1; 312 } 313 if (cred->key_idx > NUM_WEP_KEYS) { 314 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d", 315 cred->key_idx); 316 return -1; 317 } 318 if (cred->key_idx) 319 key_idx = cred->key_idx - 1; 320 if (cred->key_len == 10 || cred->key_len == 26) { 321 if (hexstr2bin((char *) cred->key, 322 ssid->wep_key[key_idx], 323 cred->key_len / 2) < 0) { 324 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key " 325 "%d", key_idx); 326 return -1; 327 } 328 ssid->wep_key_len[key_idx] = cred->key_len / 2; 329 } else { 330 os_memcpy(ssid->wep_key[key_idx], cred->key, 331 cred->key_len); 332 ssid->wep_key_len[key_idx] = cred->key_len; 333 } 334 ssid->wep_tx_keyidx = key_idx; 335 break; 336 case WPS_ENCR_TKIP: 337 ssid->pairwise_cipher = WPA_CIPHER_TKIP; 338 break; 339 case WPS_ENCR_AES: 340 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 341 break; 342 } 343 344 switch (auth_type) { 345 case WPS_AUTH_OPEN: 346 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 347 ssid->key_mgmt = WPA_KEY_MGMT_NONE; 348 ssid->proto = 0; 349#ifdef CONFIG_WPS_REG_DISABLE_OPEN 350 if (registrar) { 351 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK 352 "id=%d - Credentials for an open " 353 "network disabled by default - use " 354 "'select_network %d' to enable", 355 ssid->id, ssid->id); 356 ssid->disabled = 1; 357 } 358#endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 359 break; 360 case WPS_AUTH_SHARED: 361 ssid->auth_alg = WPA_AUTH_ALG_SHARED; 362 ssid->key_mgmt = WPA_KEY_MGMT_NONE; 363 ssid->proto = 0; 364 break; 365 case WPS_AUTH_WPAPSK: 366 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 367 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 368 ssid->proto = WPA_PROTO_WPA; 369 break; 370 case WPS_AUTH_WPA2PSK: 371 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 372 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 373 ssid->proto = WPA_PROTO_RSN; 374 break; 375 } 376 377 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) { 378 if (cred->key_len == 2 * PMK_LEN) { 379 if (hexstr2bin((const char *) cred->key, ssid->psk, 380 PMK_LEN)) { 381 wpa_printf(MSG_ERROR, "WPS: Invalid Network " 382 "Key"); 383 return -1; 384 } 385 ssid->psk_set = 1; 386 ssid->export_keys = 1; 387 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) { 388 os_free(ssid->passphrase); 389 ssid->passphrase = os_malloc(cred->key_len + 1); 390 if (ssid->passphrase == NULL) 391 return -1; 392 os_memcpy(ssid->passphrase, cred->key, cred->key_len); 393 ssid->passphrase[cred->key_len] = '\0'; 394 wpa_config_update_psk(ssid); 395 ssid->export_keys = 1; 396 } else { 397 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key " 398 "length %lu", 399 (unsigned long) cred->key_len); 400 return -1; 401 } 402 } 403 404 wpas_wps_security_workaround(wpa_s, ssid, cred); 405 406#ifndef CONFIG_NO_CONFIG_WRITE 407 if (wpa_s->conf->update_config && 408 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 409 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration"); 410 return -1; 411 } 412#endif /* CONFIG_NO_CONFIG_WRITE */ 413 414 return 0; 415} 416 417 418#ifdef CONFIG_P2P 419static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) 420{ 421 struct wpa_supplicant *wpa_s = eloop_ctx; 422 wpas_p2p_notif_pbc_overlap(wpa_s); 423} 424#endif /* CONFIG_P2P */ 425 426 427static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s, 428 struct wps_event_m2d *m2d) 429{ 430 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D 431 "dev_password_id=%d config_error=%d", 432 m2d->dev_password_id, m2d->config_error); 433 wpas_notify_wps_event_m2d(wpa_s, m2d); 434#ifdef CONFIG_P2P 435 if (wpa_s->parent && wpa_s->parent != wpa_s) { 436 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D 437 "dev_password_id=%d config_error=%d", 438 m2d->dev_password_id, m2d->config_error); 439 } 440 if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) { 441 /* 442 * Notify P2P from eloop timeout to avoid issues with the 443 * interface getting removed while processing a message. 444 */ 445 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s, 446 NULL); 447 } 448#endif /* CONFIG_P2P */ 449} 450 451 452static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = { 453 "No Error", /* WPS_EI_NO_ERROR */ 454 "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */ 455 "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */ 456}; 457 458static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s, 459 struct wps_event_fail *fail) 460{ 461 if (fail->error_indication > 0 && 462 fail->error_indication < NUM_WPS_EI_VALUES) { 463 wpa_msg(wpa_s, MSG_INFO, 464 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 465 fail->msg, fail->config_error, fail->error_indication, 466 wps_event_fail_reason[fail->error_indication]); 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 reason=%d (%s)", 470 fail->msg, fail->config_error, 471 fail->error_indication, 472 wps_event_fail_reason[fail->error_indication]); 473 } else { 474 wpa_msg(wpa_s, MSG_INFO, 475 WPS_EVENT_FAIL "msg=%d config_error=%d", 476 fail->msg, fail->config_error); 477 if (wpa_s->parent && wpa_s->parent != wpa_s) 478 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL 479 "msg=%d config_error=%d", 480 fail->msg, fail->config_error); 481 } 482 wpas_clear_wps(wpa_s); 483 wpas_notify_wps_event_fail(wpa_s, fail); 484#ifdef CONFIG_P2P 485 wpas_p2p_wps_failed(wpa_s, fail); 486#endif /* CONFIG_P2P */ 487} 488 489 490static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s) 491{ 492 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS); 493 wpa_s->wps_success = 1; 494 wpas_notify_wps_event_success(wpa_s); 495#ifdef CONFIG_P2P 496 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0); 497#endif /* CONFIG_P2P */ 498} 499 500 501static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s, 502 struct wps_event_er_ap *ap) 503{ 504 char uuid_str[100]; 505 char dev_type[WPS_DEV_TYPE_BUFSIZE]; 506 507 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); 508 if (ap->pri_dev_type) 509 wps_dev_type_bin2str(ap->pri_dev_type, dev_type, 510 sizeof(dev_type)); 511 else 512 dev_type[0] = '\0'; 513 514 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR 515 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|", 516 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state, 517 ap->friendly_name ? ap->friendly_name : "", 518 ap->manufacturer ? ap->manufacturer : "", 519 ap->model_description ? ap->model_description : "", 520 ap->model_name ? ap->model_name : "", 521 ap->manufacturer_url ? ap->manufacturer_url : "", 522 ap->model_url ? ap->model_url : ""); 523} 524 525 526static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s, 527 struct wps_event_er_ap *ap) 528{ 529 char uuid_str[100]; 530 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); 531 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str); 532} 533 534 535static void wpa_supplicant_wps_event_er_enrollee_add( 536 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) 537{ 538 char uuid_str[100]; 539 char dev_type[WPS_DEV_TYPE_BUFSIZE]; 540 541 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); 542 if (enrollee->pri_dev_type) 543 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type, 544 sizeof(dev_type)); 545 else 546 dev_type[0] = '\0'; 547 548 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR 549 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s " 550 "|%s|%s|%s|%s|%s|", 551 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received, 552 enrollee->config_methods, enrollee->dev_passwd_id, dev_type, 553 enrollee->dev_name ? enrollee->dev_name : "", 554 enrollee->manufacturer ? enrollee->manufacturer : "", 555 enrollee->model_name ? enrollee->model_name : "", 556 enrollee->model_number ? enrollee->model_number : "", 557 enrollee->serial_number ? enrollee->serial_number : ""); 558} 559 560 561static void wpa_supplicant_wps_event_er_enrollee_remove( 562 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) 563{ 564 char uuid_str[100]; 565 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); 566 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR, 567 uuid_str, MAC2STR(enrollee->mac_addr)); 568} 569 570 571static void wpa_supplicant_wps_event_er_ap_settings( 572 struct wpa_supplicant *wpa_s, 573 struct wps_event_er_ap_settings *ap_settings) 574{ 575 char uuid_str[100]; 576 char key_str[65]; 577 const struct wps_credential *cred = ap_settings->cred; 578 579 key_str[0] = '\0'; 580 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { 581 if (cred->key_len >= 8 && cred->key_len <= 64) { 582 os_memcpy(key_str, cred->key, cred->key_len); 583 key_str[cred->key_len] = '\0'; 584 } 585 } 586 587 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str)); 588 /* Use wpa_msg_ctrl to avoid showing the key in debug log */ 589 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS 590 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x " 591 "key=%s", 592 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len), 593 cred->auth_type, cred->encr_type, key_str); 594} 595 596 597static void wpa_supplicant_wps_event_er_set_sel_reg( 598 struct wpa_supplicant *wpa_s, 599 struct wps_event_er_set_selected_registrar *ev) 600{ 601 char uuid_str[100]; 602 603 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str)); 604 switch (ev->state) { 605 case WPS_ER_SET_SEL_REG_START: 606 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG 607 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u " 608 "sel_reg_config_methods=0x%x", 609 uuid_str, ev->sel_reg, ev->dev_passwd_id, 610 ev->sel_reg_config_methods); 611 break; 612 case WPS_ER_SET_SEL_REG_DONE: 613 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG 614 "uuid=%s state=DONE", uuid_str); 615 break; 616 case WPS_ER_SET_SEL_REG_FAILED: 617 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG 618 "uuid=%s state=FAILED", uuid_str); 619 break; 620 } 621} 622 623 624static void wpa_supplicant_wps_event(void *ctx, enum wps_event event, 625 union wps_event_data *data) 626{ 627 struct wpa_supplicant *wpa_s = ctx; 628 switch (event) { 629 case WPS_EV_M2D: 630 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d); 631 break; 632 case WPS_EV_FAIL: 633 wpa_supplicant_wps_event_fail(wpa_s, &data->fail); 634 break; 635 case WPS_EV_SUCCESS: 636 wpa_supplicant_wps_event_success(wpa_s); 637 break; 638 case WPS_EV_PWD_AUTH_FAIL: 639#ifdef CONFIG_AP 640 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee) 641 wpa_supplicant_ap_pwd_auth_fail(wpa_s); 642#endif /* CONFIG_AP */ 643 break; 644 case WPS_EV_PBC_OVERLAP: 645 break; 646 case WPS_EV_PBC_TIMEOUT: 647 break; 648 case WPS_EV_ER_AP_ADD: 649 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap); 650 break; 651 case WPS_EV_ER_AP_REMOVE: 652 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap); 653 break; 654 case WPS_EV_ER_ENROLLEE_ADD: 655 wpa_supplicant_wps_event_er_enrollee_add(wpa_s, 656 &data->enrollee); 657 break; 658 case WPS_EV_ER_ENROLLEE_REMOVE: 659 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s, 660 &data->enrollee); 661 break; 662 case WPS_EV_ER_AP_SETTINGS: 663 wpa_supplicant_wps_event_er_ap_settings(wpa_s, 664 &data->ap_settings); 665 break; 666 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 667 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s, 668 &data->set_sel_reg); 669 break; 670 case WPS_EV_AP_PIN_SUCCESS: 671 break; 672 } 673} 674 675 676enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid) 677{ 678 if (eap_is_wps_pbc_enrollee(&ssid->eap) || 679 eap_is_wps_pin_enrollee(&ssid->eap)) 680 return WPS_REQ_ENROLLEE; 681 else 682 return WPS_REQ_REGISTRAR; 683} 684 685 686static void wpas_clear_wps(struct wpa_supplicant *wpa_s) 687{ 688 int id; 689 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current; 690 691 prev_current = wpa_s->current_ssid; 692 693 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 694 695 /* Remove any existing WPS network from configuration */ 696 ssid = wpa_s->conf->ssid; 697 while (ssid) { 698 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 699 if (ssid == wpa_s->current_ssid) { 700 wpa_s->current_ssid = NULL; 701 if (ssid != NULL) 702 wpas_notify_network_changed(wpa_s); 703 } 704 id = ssid->id; 705 remove_ssid = ssid; 706 } else 707 id = -1; 708 ssid = ssid->next; 709 if (id >= 0) { 710 if (prev_current == remove_ssid) { 711 wpa_sm_set_config(wpa_s->wpa, NULL); 712 eapol_sm_notify_config(wpa_s->eapol, NULL, 713 NULL); 714 } 715 wpas_notify_network_removed(wpa_s, remove_ssid); 716 wpa_config_remove_network(wpa_s->conf, id); 717 } 718 } 719 720 wpas_wps_clear_ap_info(wpa_s); 721} 722 723 724static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx) 725{ 726 struct wpa_supplicant *wpa_s = eloop_ctx; 727 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed " 728 "out"); 729 wpas_clear_wps(wpa_s); 730} 731 732 733static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s, 734 int registrar, const u8 *bssid) 735{ 736 struct wpa_ssid *ssid; 737 738 ssid = wpa_config_add_network(wpa_s->conf); 739 if (ssid == NULL) 740 return NULL; 741 wpas_notify_network_added(wpa_s, ssid); 742 wpa_config_set_network_defaults(ssid); 743 ssid->temporary = 1; 744 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 || 745 wpa_config_set(ssid, "eap", "WSC", 0) < 0 || 746 wpa_config_set(ssid, "identity", registrar ? 747 "\"" WSC_ID_REGISTRAR "\"" : 748 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) { 749 wpas_notify_network_removed(wpa_s, ssid); 750 wpa_config_remove_network(wpa_s->conf, ssid->id); 751 return NULL; 752 } 753 754 if (bssid) { 755#ifndef CONFIG_P2P 756 struct wpa_bss *bss; 757 int count = 0; 758#endif /* CONFIG_P2P */ 759 760 os_memcpy(ssid->bssid, bssid, ETH_ALEN); 761 ssid->bssid_set = 1; 762 763 /* 764 * Note: With P2P, the SSID may change at the time the WPS 765 * provisioning is started, so better not filter the AP based 766 * on the current SSID in the scan results. 767 */ 768#ifndef CONFIG_P2P 769 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 770 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0) 771 continue; 772 773 os_free(ssid->ssid); 774 ssid->ssid = os_malloc(bss->ssid_len); 775 if (ssid->ssid == NULL) 776 break; 777 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 778 ssid->ssid_len = bss->ssid_len; 779 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from " 780 "scan results", 781 ssid->ssid, ssid->ssid_len); 782 count++; 783 } 784 785 if (count > 1) { 786 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found " 787 "for the AP; use wildcard"); 788 os_free(ssid->ssid); 789 ssid->ssid = NULL; 790 ssid->ssid_len = 0; 791 } 792#endif /* CONFIG_P2P */ 793 } 794 795 return ssid; 796} 797 798 799static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s, 800 struct wpa_ssid *selected, const u8 *bssid) 801{ 802 struct wpa_ssid *ssid; 803 struct wpa_bss *bss; 804 805 wpa_s->known_wps_freq = 0; 806 if (bssid) { 807 bss = wpa_bss_get_bssid(wpa_s, bssid); 808 if (bss && bss->freq > 0) { 809 wpa_s->known_wps_freq = 1; 810 wpa_s->wps_freq = bss->freq; 811 } 812 } 813 814 if (wpa_s->current_ssid) 815 wpa_supplicant_deauthenticate( 816 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 817 818 /* Mark all other networks disabled and trigger reassociation */ 819 ssid = wpa_s->conf->ssid; 820 while (ssid) { 821 int was_disabled = ssid->disabled; 822 /* 823 * In case the network object corresponds to a persistent group 824 * then do not send out network disabled signal. In addition, 825 * do not change disabled status of persistent network objects 826 * from 2 to 1 should we connect to another network. 827 */ 828 if (was_disabled != 2) { 829 ssid->disabled = ssid != selected; 830 if (was_disabled != ssid->disabled) 831 wpas_notify_network_enabled_changed(wpa_s, 832 ssid); 833 } 834 ssid = ssid->next; 835 } 836 wpa_s->disconnected = 0; 837 wpa_s->reassociate = 1; 838 wpa_s->scan_runs = 0; 839 wpa_s->normal_scans = 0; 840 wpa_s->wps_success = 0; 841 wpa_s->blacklist_cleared = 0; 842 wpa_supplicant_req_scan(wpa_s, 0, 0); 843} 844 845 846int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid, 847 int p2p_group) 848{ 849 struct wpa_ssid *ssid; 850 wpas_clear_wps(wpa_s); 851 ssid = wpas_wps_add_network(wpa_s, 0, bssid); 852 if (ssid == NULL) 853 return -1; 854 ssid->temporary = 1; 855 ssid->p2p_group = p2p_group; 856#ifdef CONFIG_P2P 857 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { 858 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); 859 if (ssid->ssid) { 860 ssid->ssid_len = wpa_s->go_params->ssid_len; 861 os_memcpy(ssid->ssid, wpa_s->go_params->ssid, 862 ssid->ssid_len); 863 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " 864 "SSID", ssid->ssid, ssid->ssid_len); 865 } 866 } 867#endif /* CONFIG_P2P */ 868 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0); 869 if (wpa_s->wps_fragment_size) 870 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 871 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 872 wpa_s, NULL); 873 wpas_wps_reassoc(wpa_s, ssid, bssid); 874 return 0; 875} 876 877 878int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid, 879 const char *pin, int p2p_group, u16 dev_pw_id) 880{ 881 struct wpa_ssid *ssid; 882 char val[128]; 883 unsigned int rpin = 0; 884 885 wpas_clear_wps(wpa_s); 886 ssid = wpas_wps_add_network(wpa_s, 0, bssid); 887 if (ssid == NULL) 888 return -1; 889 ssid->temporary = 1; 890 ssid->p2p_group = p2p_group; 891#ifdef CONFIG_P2P 892 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { 893 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); 894 if (ssid->ssid) { 895 ssid->ssid_len = wpa_s->go_params->ssid_len; 896 os_memcpy(ssid->ssid, wpa_s->go_params->ssid, 897 ssid->ssid_len); 898 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " 899 "SSID", ssid->ssid, ssid->ssid_len); 900 } 901 } 902#endif /* CONFIG_P2P */ 903 if (pin) 904 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"", 905 pin, dev_pw_id); 906 else { 907 rpin = wps_generate_pin(); 908 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"", 909 rpin, dev_pw_id); 910 } 911 wpa_config_set(ssid, "phase1", val, 0); 912 if (wpa_s->wps_fragment_size) 913 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 914 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 915 wpa_s, NULL); 916 wpa_s->wps_ap_iter = 1; 917 wpas_wps_reassoc(wpa_s, ssid, bssid); 918 return rpin; 919} 920 921 922/* Cancel the wps pbc/pin requests */ 923int wpas_wps_cancel(struct wpa_supplicant *wpa_s) 924{ 925#ifdef CONFIG_AP 926 if (wpa_s->ap_iface) { 927 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode"); 928 return wpa_supplicant_ap_wps_cancel(wpa_s); 929 } 930#endif /* CONFIG_AP */ 931 932 if (wpa_s->wpa_state == WPA_SCANNING || 933 wpa_s->wpa_state == WPA_DISCONNECTED) { 934 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan"); 935 wpa_supplicant_cancel_scan(wpa_s); 936 wpas_clear_wps(wpa_s); 937 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) { 938 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - " 939 "deauthenticate"); 940 wpa_supplicant_deauthenticate(wpa_s, 941 WLAN_REASON_DEAUTH_LEAVING); 942 wpas_clear_wps(wpa_s); 943 } else 944 wpas_wps_clear_ap_info(wpa_s); 945 946 return 0; 947} 948 949 950#ifdef CONFIG_WPS_OOB 951int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type, 952 char *path, char *method, char *name) 953{ 954 struct wps_context *wps = wpa_s->wps; 955 struct oob_device_data *oob_dev; 956 957 oob_dev = wps_get_oob_device(device_type); 958 if (oob_dev == NULL) 959 return -1; 960 oob_dev->device_path = path; 961 oob_dev->device_name = name; 962 wps->oob_conf.oob_method = wps_get_oob_method(method); 963 964 if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) { 965 /* 966 * Use pre-configured DH keys in order to be able to write the 967 * key hash into the OOB file. 968 */ 969 wpabuf_free(wps->dh_pubkey); 970 wpabuf_free(wps->dh_privkey); 971 wps->dh_privkey = NULL; 972 wps->dh_pubkey = NULL; 973 dh5_free(wps->dh_ctx); 974 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey); 975 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192); 976 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) { 977 wpa_printf(MSG_ERROR, "WPS: Failed to initialize " 978 "Diffie-Hellman handshake"); 979 return -1; 980 } 981 } 982 983 if (wps->oob_conf.oob_method == OOB_METHOD_CRED) 984 wpas_clear_wps(wpa_s); 985 986 if (wps_process_oob(wps, oob_dev, 0) < 0) 987 return -1; 988 989 if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E || 990 wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) && 991 wpas_wps_start_pin(wpa_s, NULL, 992 wpabuf_head(wps->oob_conf.dev_password), 0, 993 DEV_PW_DEFAULT) < 0) 994 return -1; 995 996 return 0; 997} 998#endif /* CONFIG_WPS_OOB */ 999 1000 1001int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid, 1002 const char *pin, struct wps_new_ap_settings *settings) 1003{ 1004 struct wpa_ssid *ssid; 1005 char val[200]; 1006 char *pos, *end; 1007 int res; 1008 1009 if (!pin) 1010 return -1; 1011 wpas_clear_wps(wpa_s); 1012 ssid = wpas_wps_add_network(wpa_s, 1, bssid); 1013 if (ssid == NULL) 1014 return -1; 1015 ssid->temporary = 1; 1016 pos = val; 1017 end = pos + sizeof(val); 1018 res = os_snprintf(pos, end - pos, "\"pin=%s", pin); 1019 if (res < 0 || res >= end - pos) 1020 return -1; 1021 pos += res; 1022 if (settings) { 1023 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s " 1024 "new_encr=%s new_key=%s", 1025 settings->ssid_hex, settings->auth, 1026 settings->encr, settings->key_hex); 1027 if (res < 0 || res >= end - pos) 1028 return -1; 1029 pos += res; 1030 } 1031 res = os_snprintf(pos, end - pos, "\""); 1032 if (res < 0 || res >= end - pos) 1033 return -1; 1034 wpa_config_set(ssid, "phase1", val, 0); 1035 if (wpa_s->wps_fragment_size) 1036 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 1037 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 1038 wpa_s, NULL); 1039 wpas_wps_reassoc(wpa_s, ssid, bssid); 1040 return 0; 1041} 1042 1043 1044static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk, 1045 size_t psk_len) 1046{ 1047 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for " 1048 "STA " MACSTR, MAC2STR(mac_addr)); 1049 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len); 1050 1051 /* TODO */ 1052 1053 return 0; 1054} 1055 1056 1057static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, 1058 const struct wps_device_data *dev) 1059{ 1060 char uuid[40], txt[400]; 1061 int len; 1062 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1063 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 1064 return; 1065 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid); 1066 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR 1067 " [%s|%s|%s|%s|%s|%s]", 1068 uuid, MAC2STR(dev->mac_addr), dev->device_name, 1069 dev->manufacturer, dev->model_name, 1070 dev->model_number, dev->serial_number, 1071 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 1072 sizeof(devtype))); 1073 if (len > 0 && len < (int) sizeof(txt)) 1074 wpa_printf(MSG_INFO, "%s", txt); 1075} 1076 1077 1078static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id, 1079 u16 sel_reg_config_methods) 1080{ 1081#ifdef CONFIG_WPS_ER 1082 struct wpa_supplicant *wpa_s = ctx; 1083 1084 if (wpa_s->wps_er == NULL) 1085 return; 1086 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d " 1087 "dev_password_id=%u sel_reg_config_methods=0x%x", 1088 sel_reg, dev_passwd_id, sel_reg_config_methods); 1089 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id, 1090 sel_reg_config_methods); 1091#endif /* CONFIG_WPS_ER */ 1092} 1093 1094 1095static u16 wps_fix_config_methods(u16 config_methods) 1096{ 1097#ifdef CONFIG_WPS2 1098 if ((config_methods & 1099 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1100 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1101 wpa_printf(MSG_INFO, "WPS: Converting display to " 1102 "virtual_display for WPS 2.0 compliance"); 1103 config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1104 } 1105 if ((config_methods & 1106 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1107 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1108 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1109 "virtual_push_button for WPS 2.0 compliance"); 1110 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1111 } 1112#endif /* CONFIG_WPS2 */ 1113 1114 return config_methods; 1115} 1116 1117 1118static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s, 1119 struct wps_context *wps) 1120{ 1121 wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname); 1122 if (is_nil_uuid(wpa_s->conf->uuid)) { 1123 struct wpa_supplicant *first; 1124 first = wpa_s->global->ifaces; 1125 while (first && first->next) 1126 first = first->next; 1127 if (first && first != wpa_s) { 1128 if (wps != wpa_s->global->ifaces->wps) 1129 os_memcpy(wps->uuid, 1130 wpa_s->global->ifaces->wps->uuid, 1131 WPS_UUID_LEN); 1132 wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first " 1133 "interface", wps->uuid, WPS_UUID_LEN); 1134 } else { 1135 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid); 1136 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " 1137 "address", wps->uuid, WPS_UUID_LEN); 1138 } 1139 } else { 1140 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN); 1141 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration", 1142 wps->uuid, WPS_UUID_LEN); 1143 } 1144} 1145 1146 1147static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s, 1148 struct wps_context *wps) 1149{ 1150 wpabuf_free(wps->dev.vendor_ext_m1); 1151 wps->dev.vendor_ext_m1 = NULL; 1152 1153 if (wpa_s->conf->wps_vendor_ext_m1) { 1154 wps->dev.vendor_ext_m1 = 1155 wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1); 1156 if (!wps->dev.vendor_ext_m1) { 1157 wpa_printf(MSG_ERROR, "WPS: Cannot " 1158 "allocate memory for vendor_ext_m1"); 1159 } 1160 } 1161} 1162 1163 1164int wpas_wps_init(struct wpa_supplicant *wpa_s) 1165{ 1166 struct wps_context *wps; 1167 struct wps_registrar_config rcfg; 1168 struct hostapd_hw_modes *modes; 1169 u16 m; 1170 1171 wps = os_zalloc(sizeof(*wps)); 1172 if (wps == NULL) 1173 return -1; 1174 1175 wps->cred_cb = wpa_supplicant_wps_cred; 1176 wps->event_cb = wpa_supplicant_wps_event; 1177 wps->cb_ctx = wpa_s; 1178 1179 wps->dev.device_name = wpa_s->conf->device_name; 1180 wps->dev.manufacturer = wpa_s->conf->manufacturer; 1181 wps->dev.model_name = wpa_s->conf->model_name; 1182 wps->dev.model_number = wpa_s->conf->model_number; 1183 wps->dev.serial_number = wpa_s->conf->serial_number; 1184 wps->config_methods = 1185 wps_config_methods_str2bin(wpa_s->conf->config_methods); 1186 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == 1187 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { 1188 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config " 1189 "methods are not allowed at the same time"); 1190 os_free(wps); 1191 return -1; 1192 } 1193 wps->config_methods = wps_fix_config_methods(wps->config_methods); 1194 wps->dev.config_methods = wps->config_methods; 1195 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, 1196 WPS_DEV_TYPE_LEN); 1197 1198 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 1199 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, 1200 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types); 1201 1202 wpas_wps_set_vendor_ext_m1(wpa_s, wps); 1203 1204 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); 1205 modes = wpa_s->hw.modes; 1206 if (modes) { 1207 for (m = 0; m < wpa_s->hw.num_modes; m++) { 1208 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B || 1209 modes[m].mode == HOSTAPD_MODE_IEEE80211G) 1210 wps->dev.rf_bands |= WPS_RF_24GHZ; 1211 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A) 1212 wps->dev.rf_bands |= WPS_RF_50GHZ; 1213 } 1214 } 1215 if (wps->dev.rf_bands == 0) { 1216 /* 1217 * Default to claiming support for both bands if the driver 1218 * does not provide support for fetching supported bands. 1219 */ 1220 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; 1221 } 1222 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN); 1223 wpas_wps_set_uuid(wpa_s, wps); 1224 1225 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1226 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1227 1228 os_memset(&rcfg, 0, sizeof(rcfg)); 1229 rcfg.new_psk_cb = wpas_wps_new_psk_cb; 1230 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb; 1231 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb; 1232 rcfg.cb_ctx = wpa_s; 1233 1234 wps->registrar = wps_registrar_init(wps, &rcfg); 1235 if (wps->registrar == NULL) { 1236 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar"); 1237 os_free(wps); 1238 return -1; 1239 } 1240 1241 wpa_s->wps = wps; 1242 1243 return 0; 1244} 1245 1246 1247void wpas_wps_deinit(struct wpa_supplicant *wpa_s) 1248{ 1249 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 1250 wpas_wps_clear_ap_info(wpa_s); 1251 1252 if (wpa_s->wps == NULL) 1253 return; 1254 1255#ifdef CONFIG_WPS_ER 1256 wps_er_deinit(wpa_s->wps_er, NULL, NULL); 1257 wpa_s->wps_er = NULL; 1258#endif /* CONFIG_WPS_ER */ 1259 1260 wps_registrar_deinit(wpa_s->wps->registrar); 1261 wpabuf_free(wpa_s->wps->dh_pubkey); 1262 wpabuf_free(wpa_s->wps->dh_privkey); 1263 wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash); 1264 wpabuf_free(wpa_s->wps->oob_conf.dev_password); 1265 wpabuf_free(wpa_s->wps->dev.vendor_ext_m1); 1266 os_free(wpa_s->wps->network_key); 1267 os_free(wpa_s->wps); 1268 wpa_s->wps = NULL; 1269} 1270 1271 1272int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s, 1273 struct wpa_ssid *ssid, struct wpa_bss *bss) 1274{ 1275 struct wpabuf *wps_ie; 1276 1277 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) 1278 return -1; 1279 1280 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1281 if (eap_is_wps_pbc_enrollee(&ssid->eap)) { 1282 if (!wps_ie) { 1283 wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); 1284 return 0; 1285 } 1286 1287 if (!wps_is_selected_pbc_registrar(wps_ie)) { 1288 wpa_printf(MSG_DEBUG, " skip - WPS AP " 1289 "without active PBC Registrar"); 1290 wpabuf_free(wps_ie); 1291 return 0; 1292 } 1293 1294 /* TODO: overlap detection */ 1295 wpa_printf(MSG_DEBUG, " selected based on WPS IE " 1296 "(Active PBC)"); 1297 wpabuf_free(wps_ie); 1298 return 1; 1299 } 1300 1301 if (eap_is_wps_pin_enrollee(&ssid->eap)) { 1302 if (!wps_ie) { 1303 wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); 1304 return 0; 1305 } 1306 1307 /* 1308 * Start with WPS APs that advertise our address as an 1309 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and 1310 * allow any WPS AP after couple of scans since some APs do not 1311 * set Selected Registrar attribute properly when using 1312 * external Registrar. 1313 */ 1314 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) { 1315 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) { 1316 wpa_printf(MSG_DEBUG, " skip - WPS AP " 1317 "without active PIN Registrar"); 1318 wpabuf_free(wps_ie); 1319 return 0; 1320 } 1321 wpa_printf(MSG_DEBUG, " selected based on WPS IE"); 1322 } else { 1323 wpa_printf(MSG_DEBUG, " selected based on WPS IE " 1324 "(Authorized MAC or Active PIN)"); 1325 } 1326 wpabuf_free(wps_ie); 1327 return 1; 1328 } 1329 1330 if (wps_ie) { 1331 wpa_printf(MSG_DEBUG, " selected based on WPS IE"); 1332 wpabuf_free(wps_ie); 1333 return 1; 1334 } 1335 1336 return -1; 1337} 1338 1339 1340int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s, 1341 struct wpa_ssid *ssid, 1342 struct wpa_bss *bss) 1343{ 1344 struct wpabuf *wps_ie = NULL; 1345 int ret = 0; 1346 1347 if (eap_is_wps_pbc_enrollee(&ssid->eap)) { 1348 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1349 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) { 1350 /* allow wildcard SSID for WPS PBC */ 1351 ret = 1; 1352 } 1353 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) { 1354 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1355 if (wps_ie && 1356 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) || 1357 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) { 1358 /* allow wildcard SSID for WPS PIN */ 1359 ret = 1; 1360 } 1361 } 1362 1363 if (!ret && ssid->bssid_set && 1364 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) { 1365 /* allow wildcard SSID due to hardcoded BSSID match */ 1366 ret = 1; 1367 } 1368 1369#ifdef CONFIG_WPS_STRICT 1370 if (wps_ie) { 1371 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len > 1372 0, bss->bssid) < 0) 1373 ret = 0; 1374 if (bss->beacon_ie_len) { 1375 struct wpabuf *bcn_wps; 1376 bcn_wps = wpa_bss_get_vendor_ie_multi_beacon( 1377 bss, WPS_IE_VENDOR_TYPE); 1378 if (bcn_wps == NULL) { 1379 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE " 1380 "missing from AP Beacon"); 1381 ret = 0; 1382 } else { 1383 if (wps_validate_beacon(wps_ie) < 0) 1384 ret = 0; 1385 wpabuf_free(bcn_wps); 1386 } 1387 } 1388 } 1389#endif /* CONFIG_WPS_STRICT */ 1390 1391 wpabuf_free(wps_ie); 1392 1393 return ret; 1394} 1395 1396 1397int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s, 1398 struct wpa_bss *selected, struct wpa_ssid *ssid) 1399{ 1400 const u8 *sel_uuid, *uuid; 1401 struct wpabuf *wps_ie; 1402 int ret = 0; 1403 struct wpa_bss *bss; 1404 1405 if (!eap_is_wps_pbc_enrollee(&ssid->eap)) 1406 return 0; 1407 1408 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is " 1409 "present in scan results; selected BSSID " MACSTR, 1410 MAC2STR(selected->bssid)); 1411 1412 /* Make sure that only one AP is in active PBC mode */ 1413 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE); 1414 if (wps_ie) { 1415 sel_uuid = wps_get_uuid_e(wps_ie); 1416 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS", 1417 sel_uuid, UUID_LEN); 1418 } else { 1419 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include " 1420 "WPS IE?!"); 1421 sel_uuid = NULL; 1422 } 1423 1424 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1425 struct wpabuf *ie; 1426 if (bss == selected) 1427 continue; 1428 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1429 if (!ie) 1430 continue; 1431 if (!wps_is_selected_pbc_registrar(ie)) { 1432 wpabuf_free(ie); 1433 continue; 1434 } 1435 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: " 1436 MACSTR, MAC2STR(bss->bssid)); 1437 uuid = wps_get_uuid_e(ie); 1438 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS", 1439 uuid, UUID_LEN); 1440 if (sel_uuid == NULL || uuid == NULL || 1441 os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) { 1442 ret = 1; /* PBC overlap */ 1443 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: " 1444 MACSTR " and " MACSTR, 1445 MAC2STR(selected->bssid), 1446 MAC2STR(bss->bssid)); 1447 wpabuf_free(ie); 1448 break; 1449 } 1450 1451 /* TODO: verify that this is reasonable dual-band situation */ 1452 1453 wpabuf_free(ie); 1454 } 1455 1456 wpabuf_free(wps_ie); 1457 1458 return ret; 1459} 1460 1461 1462void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s) 1463{ 1464 struct wpa_bss *bss; 1465 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0; 1466 1467 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED) 1468 return; 1469 1470 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1471 struct wpabuf *ie; 1472 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1473 if (!ie) 1474 continue; 1475 if (wps_is_selected_pbc_registrar(ie)) 1476 pbc++; 1477 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0)) 1478 auth++; 1479 else if (wps_is_selected_pin_registrar(ie)) 1480 pin++; 1481 else 1482 wps++; 1483 wpabuf_free(ie); 1484 } 1485 1486 if (pbc) 1487 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC); 1488 else if (auth) 1489 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH); 1490 else if (pin) 1491 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN); 1492 else if (wps) 1493 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE); 1494} 1495 1496 1497int wpas_wps_searching(struct wpa_supplicant *wpa_s) 1498{ 1499 struct wpa_ssid *ssid; 1500 1501 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1502 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled) 1503 return 1; 1504 } 1505 1506 return 0; 1507} 1508 1509 1510int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 1511 char *end) 1512{ 1513 struct wpabuf *wps_ie; 1514 int ret; 1515 1516 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA); 1517 if (wps_ie == NULL) 1518 return 0; 1519 1520 ret = wps_attr_text(wps_ie, buf, end); 1521 wpabuf_free(wps_ie); 1522 return ret; 1523} 1524 1525 1526int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter) 1527{ 1528#ifdef CONFIG_WPS_ER 1529 if (wpa_s->wps_er) { 1530 wps_er_refresh(wpa_s->wps_er); 1531 return 0; 1532 } 1533 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter); 1534 if (wpa_s->wps_er == NULL) 1535 return -1; 1536 return 0; 1537#else /* CONFIG_WPS_ER */ 1538 return 0; 1539#endif /* CONFIG_WPS_ER */ 1540} 1541 1542 1543int wpas_wps_er_stop(struct wpa_supplicant *wpa_s) 1544{ 1545#ifdef CONFIG_WPS_ER 1546 wps_er_deinit(wpa_s->wps_er, NULL, NULL); 1547 wpa_s->wps_er = NULL; 1548#endif /* CONFIG_WPS_ER */ 1549 return 0; 1550} 1551 1552 1553#ifdef CONFIG_WPS_ER 1554int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr, 1555 const char *uuid, const char *pin) 1556{ 1557 u8 u[UUID_LEN]; 1558 int any = 0; 1559 1560 if (os_strcmp(uuid, "any") == 0) 1561 any = 1; 1562 else if (uuid_str2bin(uuid, u)) 1563 return -1; 1564 return wps_registrar_add_pin(wpa_s->wps->registrar, addr, 1565 any ? NULL : u, 1566 (const u8 *) pin, os_strlen(pin), 300); 1567} 1568 1569 1570int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid) 1571{ 1572 u8 u[UUID_LEN]; 1573 1574 if (uuid_str2bin(uuid, u)) 1575 return -1; 1576 return wps_er_pbc(wpa_s->wps_er, u); 1577} 1578 1579 1580int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid, 1581 const char *pin) 1582{ 1583 u8 u[UUID_LEN]; 1584 1585 if (uuid_str2bin(uuid, u)) 1586 return -1; 1587 return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin, 1588 os_strlen(pin)); 1589} 1590 1591 1592int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid, 1593 int id) 1594{ 1595 u8 u[UUID_LEN]; 1596 struct wpa_ssid *ssid; 1597 struct wps_credential cred; 1598 1599 if (uuid_str2bin(uuid, u)) 1600 return -1; 1601 ssid = wpa_config_get_network(wpa_s->conf, id); 1602 if (ssid == NULL || ssid->ssid == NULL) 1603 return -1; 1604 1605 os_memset(&cred, 0, sizeof(cred)); 1606 if (ssid->ssid_len > 32) 1607 return -1; 1608 os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len); 1609 cred.ssid_len = ssid->ssid_len; 1610 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) { 1611 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ? 1612 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK; 1613 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP) 1614 cred.encr_type = WPS_ENCR_AES; 1615 else 1616 cred.encr_type = WPS_ENCR_TKIP; 1617 if (ssid->passphrase) { 1618 cred.key_len = os_strlen(ssid->passphrase); 1619 if (cred.key_len >= 64) 1620 return -1; 1621 os_memcpy(cred.key, ssid->passphrase, cred.key_len); 1622 } else if (ssid->psk_set) { 1623 cred.key_len = 32; 1624 os_memcpy(cred.key, ssid->psk, 32); 1625 } else 1626 return -1; 1627 } else { 1628 cred.auth_type = WPS_AUTH_OPEN; 1629 cred.encr_type = WPS_ENCR_NONE; 1630 } 1631 return wps_er_set_config(wpa_s->wps_er, u, &cred); 1632} 1633 1634 1635int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid, 1636 const char *pin, struct wps_new_ap_settings *settings) 1637{ 1638 u8 u[UUID_LEN]; 1639 struct wps_credential cred; 1640 size_t len; 1641 1642 if (uuid_str2bin(uuid, u)) 1643 return -1; 1644 if (settings->ssid_hex == NULL || settings->auth == NULL || 1645 settings->encr == NULL || settings->key_hex == NULL) 1646 return -1; 1647 1648 os_memset(&cred, 0, sizeof(cred)); 1649 len = os_strlen(settings->ssid_hex); 1650 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1651 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2)) 1652 return -1; 1653 cred.ssid_len = len / 2; 1654 1655 len = os_strlen(settings->key_hex); 1656 if ((len & 1) || len > 2 * sizeof(cred.key) || 1657 hexstr2bin(settings->key_hex, cred.key, len / 2)) 1658 return -1; 1659 cred.key_len = len / 2; 1660 1661 if (os_strcmp(settings->auth, "OPEN") == 0) 1662 cred.auth_type = WPS_AUTH_OPEN; 1663 else if (os_strcmp(settings->auth, "WPAPSK") == 0) 1664 cred.auth_type = WPS_AUTH_WPAPSK; 1665 else if (os_strcmp(settings->auth, "WPA2PSK") == 0) 1666 cred.auth_type = WPS_AUTH_WPA2PSK; 1667 else 1668 return -1; 1669 1670 if (os_strcmp(settings->encr, "NONE") == 0) 1671 cred.encr_type = WPS_ENCR_NONE; 1672 else if (os_strcmp(settings->encr, "WEP") == 0) 1673 cred.encr_type = WPS_ENCR_WEP; 1674 else if (os_strcmp(settings->encr, "TKIP") == 0) 1675 cred.encr_type = WPS_ENCR_TKIP; 1676 else if (os_strcmp(settings->encr, "CCMP") == 0) 1677 cred.encr_type = WPS_ENCR_AES; 1678 else 1679 return -1; 1680 1681 return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin, 1682 os_strlen(pin), &cred); 1683} 1684 1685 1686#ifdef CONFIG_WPS_NFC 1687struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s, 1688 int ndef, const char *uuid) 1689{ 1690 struct wpabuf *ret; 1691 u8 u[UUID_LEN]; 1692 1693 if (!wpa_s->wps_er) 1694 return NULL; 1695 1696 if (uuid_str2bin(uuid, u)) 1697 return NULL; 1698 1699 ret = wps_er_nfc_config_token(wpa_s->wps_er, u); 1700 if (ndef && ret) { 1701 struct wpabuf *tmp; 1702 tmp = ndef_build_wifi(ret); 1703 wpabuf_free(ret); 1704 if (tmp == NULL) 1705 return NULL; 1706 ret = tmp; 1707 } 1708 1709 return ret; 1710} 1711#endif /* CONFIG_WPS_NFC */ 1712 1713 1714static int callbacks_pending = 0; 1715 1716static void wpas_wps_terminate_cb(void *ctx) 1717{ 1718 wpa_printf(MSG_DEBUG, "WPS ER: Terminated"); 1719 if (--callbacks_pending <= 0) 1720 eloop_terminate(); 1721} 1722#endif /* CONFIG_WPS_ER */ 1723 1724 1725int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s) 1726{ 1727#ifdef CONFIG_WPS_ER 1728 if (wpa_s->wps_er) { 1729 callbacks_pending++; 1730 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s); 1731 wpa_s->wps_er = NULL; 1732 return 1; 1733 } 1734#endif /* CONFIG_WPS_ER */ 1735 return 0; 1736} 1737 1738 1739int wpas_wps_in_progress(struct wpa_supplicant *wpa_s) 1740{ 1741 struct wpa_ssid *ssid; 1742 1743 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1744 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS) 1745 return 1; 1746 } 1747 1748 return 0; 1749} 1750 1751 1752void wpas_wps_update_config(struct wpa_supplicant *wpa_s) 1753{ 1754 struct wps_context *wps = wpa_s->wps; 1755 1756 if (wps == NULL) 1757 return; 1758 1759 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) { 1760 wps->config_methods = wps_config_methods_str2bin( 1761 wpa_s->conf->config_methods); 1762 if ((wps->config_methods & 1763 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == 1764 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { 1765 wpa_printf(MSG_ERROR, "WPS: Both Label and Display " 1766 "config methods are not allowed at the " 1767 "same time"); 1768 wps->config_methods &= ~WPS_CONFIG_LABEL; 1769 } 1770 } 1771 wps->config_methods = wps_fix_config_methods(wps->config_methods); 1772 wps->dev.config_methods = wps->config_methods; 1773 1774 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 1775 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, 1776 WPS_DEV_TYPE_LEN); 1777 1778 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) { 1779 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 1780 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, 1781 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN); 1782 } 1783 1784 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) 1785 wpas_wps_set_vendor_ext_m1(wpa_s, wps); 1786 1787 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION) 1788 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); 1789 1790 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) 1791 wpas_wps_set_uuid(wpa_s, wps); 1792 1793 if (wpa_s->conf->changed_parameters & 1794 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) { 1795 /* Update pointers to make sure they refer current values */ 1796 wps->dev.device_name = wpa_s->conf->device_name; 1797 wps->dev.manufacturer = wpa_s->conf->manufacturer; 1798 wps->dev.model_name = wpa_s->conf->model_name; 1799 wps->dev.model_number = wpa_s->conf->model_number; 1800 wps->dev.serial_number = wpa_s->conf->serial_number; 1801 } 1802} 1803 1804 1805#ifdef CONFIG_WPS_NFC 1806 1807struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef) 1808{ 1809 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id, 1810 &wpa_s->conf->wps_nfc_dh_pubkey, 1811 &wpa_s->conf->wps_nfc_dh_privkey, 1812 &wpa_s->conf->wps_nfc_dev_pw); 1813} 1814 1815 1816int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid) 1817{ 1818 struct wps_context *wps = wpa_s->wps; 1819 char pw[32 * 2 + 1]; 1820 1821 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 1822 wpa_s->conf->wps_nfc_dh_privkey == NULL || 1823 wpa_s->conf->wps_nfc_dev_pw == NULL) 1824 return -1; 1825 1826 dh5_free(wps->dh_ctx); 1827 wpabuf_free(wps->dh_pubkey); 1828 wpabuf_free(wps->dh_privkey); 1829 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 1830 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 1831 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) { 1832 wps->dh_ctx = NULL; 1833 wpabuf_free(wps->dh_pubkey); 1834 wps->dh_pubkey = NULL; 1835 wpabuf_free(wps->dh_privkey); 1836 wps->dh_privkey = NULL; 1837 return -1; 1838 } 1839 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey); 1840 if (wps->dh_ctx == NULL) 1841 return -1; 1842 1843 wpa_snprintf_hex_uppercase(pw, sizeof(pw), 1844 wpabuf_head(wpa_s->conf->wps_nfc_dev_pw), 1845 wpabuf_len(wpa_s->conf->wps_nfc_dev_pw)); 1846 return wpas_wps_start_pin(wpa_s, bssid, pw, 0, 1847 wpa_s->conf->wps_nfc_dev_pw_id); 1848} 1849 1850 1851static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s, 1852 struct wps_parse_attr *attr) 1853{ 1854 if (wps_oob_use_cred(wpa_s->wps, attr) < 0) 1855 return -1; 1856 1857 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 1858 return 0; 1859 1860 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network " 1861 "based on the received credential added"); 1862 wpa_s->normal_scans = 0; 1863 wpa_supplicant_reinit_autoscan(wpa_s); 1864 wpa_s->disconnected = 0; 1865 wpa_s->reassociate = 1; 1866 wpa_supplicant_req_scan(wpa_s, 0, 0); 1867 1868 return 0; 1869} 1870 1871 1872#ifdef CONFIG_WPS_ER 1873static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s, 1874 struct wps_parse_attr *attr) 1875{ 1876 return wps_registrar_add_nfc_password_token( 1877 wpa_s->wps->registrar, attr->oob_dev_password, 1878 attr->oob_dev_password_len); 1879} 1880#endif /* CONFIG_WPS_ER */ 1881 1882 1883static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s, 1884 const struct wpabuf *wps) 1885{ 1886 struct wps_parse_attr attr; 1887 1888 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 1889 1890 if (wps_parse_msg(wps, &attr)) { 1891 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 1892 return -1; 1893 } 1894 1895 if (attr.num_cred) 1896 return wpas_wps_use_cred(wpa_s, &attr); 1897 1898#ifdef CONFIG_WPS_ER 1899 if (attr.oob_dev_password) 1900 return wpas_wps_add_nfc_password_token(wpa_s, &attr); 1901#endif /* CONFIG_WPS_ER */ 1902 1903 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 1904 return -1; 1905} 1906 1907 1908int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s, 1909 const struct wpabuf *data) 1910{ 1911 const struct wpabuf *wps = data; 1912 struct wpabuf *tmp = NULL; 1913 int ret; 1914 1915 if (wpabuf_len(data) < 4) 1916 return -1; 1917 1918 if (*wpabuf_head_u8(data) != 0x10) { 1919 /* Assume this contains full NDEF record */ 1920 tmp = ndef_parse_wifi(data); 1921 if (tmp == NULL) { 1922 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 1923 return -1; 1924 } 1925 wps = tmp; 1926 } 1927 1928 ret = wpas_wps_nfc_tag_process(wpa_s, wps); 1929 wpabuf_free(tmp); 1930 return ret; 1931} 1932 1933#endif /* CONFIG_WPS_NFC */ 1934 1935 1936extern int wpa_debug_level; 1937 1938static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s) 1939{ 1940 size_t i; 1941 struct os_time now; 1942 1943 if (wpa_debug_level > MSG_DEBUG) 1944 return; 1945 1946 if (wpa_s->wps_ap == NULL) 1947 return; 1948 1949 os_get_time(&now); 1950 1951 for (i = 0; i < wpa_s->num_wps_ap; i++) { 1952 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 1953 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid); 1954 1955 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d " 1956 "tries=%d last_attempt=%d sec ago blacklist=%d", 1957 (int) i, MAC2STR(ap->bssid), ap->type, ap->tries, 1958 ap->last_attempt.sec > 0 ? 1959 (int) now.sec - (int) ap->last_attempt.sec : -1, 1960 e ? e->count : 0); 1961 } 1962} 1963 1964 1965static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s, 1966 const u8 *bssid) 1967{ 1968 size_t i; 1969 1970 if (wpa_s->wps_ap == NULL) 1971 return NULL; 1972 1973 for (i = 0; i < wpa_s->num_wps_ap; i++) { 1974 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 1975 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0) 1976 return ap; 1977 } 1978 1979 return NULL; 1980} 1981 1982 1983static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s, 1984 struct wpa_scan_res *res) 1985{ 1986 struct wpabuf *wps; 1987 enum wps_ap_info_type type; 1988 struct wps_ap_info *ap; 1989 int r; 1990 1991 if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL) 1992 return; 1993 1994 wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE); 1995 if (wps == NULL) 1996 return; 1997 1998 r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1); 1999 if (r == 2) 2000 type = WPS_AP_SEL_REG_OUR; 2001 else if (r == 1) 2002 type = WPS_AP_SEL_REG; 2003 else 2004 type = WPS_AP_NOT_SEL_REG; 2005 2006 wpabuf_free(wps); 2007 2008 ap = wpas_wps_get_ap_info(wpa_s, res->bssid); 2009 if (ap) { 2010 if (ap->type != type) { 2011 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR 2012 " changed type %d -> %d", 2013 MAC2STR(res->bssid), ap->type, type); 2014 ap->type = type; 2015 if (type != WPS_AP_NOT_SEL_REG) 2016 wpa_blacklist_del(wpa_s, ap->bssid); 2017 } 2018 return; 2019 } 2020 2021 ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1, 2022 sizeof(struct wps_ap_info)); 2023 if (ap == NULL) 2024 return; 2025 2026 wpa_s->wps_ap = ap; 2027 ap = &wpa_s->wps_ap[wpa_s->num_wps_ap]; 2028 wpa_s->num_wps_ap++; 2029 2030 os_memset(ap, 0, sizeof(*ap)); 2031 os_memcpy(ap->bssid, res->bssid, ETH_ALEN); 2032 ap->type = type; 2033 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added", 2034 MAC2STR(ap->bssid), ap->type); 2035} 2036 2037 2038void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s, 2039 struct wpa_scan_results *scan_res) 2040{ 2041 size_t i; 2042 2043 for (i = 0; i < scan_res->num; i++) 2044 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]); 2045 2046 wpas_wps_dump_ap_info(wpa_s); 2047} 2048 2049 2050void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid) 2051{ 2052 struct wps_ap_info *ap; 2053 if (!wpa_s->wps_ap_iter) 2054 return; 2055 ap = wpas_wps_get_ap_info(wpa_s, bssid); 2056 if (ap == NULL) 2057 return; 2058 ap->tries++; 2059 os_get_time(&ap->last_attempt); 2060} 2061