1 /* 2 * hostapd / WPS integration 3 * Copyright (c) 2008-2016, 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 "utils/includes.h" 10 11 #include "utils/common.h" 12 #include "utils/eloop.h" 13 #include "utils/uuid.h" 14 #include "common/wpa_ctrl.h" 15 #include "common/ieee802_11_defs.h" 16 #include "common/ieee802_11_common.h" 17 #include "eapol_auth/eapol_auth_sm.h" 18 #include "eapol_auth/eapol_auth_sm_i.h" 19 #include "wps/wps.h" 20 #include "wps/wps_defs.h" 21 #include "wps/wps_dev_attr.h" 22 #include "wps/wps_attr_parse.h" 23 #include "hostapd.h" 24 #include "ap_config.h" 25 #include "ap_drv_ops.h" 26 #include "beacon.h" 27 #include "sta_info.h" 28 #include "wps_hostapd.h" 29 30 31 #ifdef CONFIG_WPS_UPNP 32 #include "wps/wps_upnp.h" 33 static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 34 struct wps_context *wps); 35 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd); 36 #endif /* CONFIG_WPS_UPNP */ 37 38 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da, 39 const u8 *bssid, 40 const u8 *ie, size_t ie_len, 41 int ssi_signal); 42 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx); 43 static void hostapd_wps_nfc_clear(struct wps_context *wps); 44 45 46 struct wps_for_each_data { 47 int (*func)(struct hostapd_data *h, void *ctx); 48 void *ctx; 49 struct hostapd_data *calling_hapd; 50 }; 51 52 53 static int wps_for_each(struct hostapd_iface *iface, void *ctx) 54 { 55 struct wps_for_each_data *data = ctx; 56 size_t j; 57 58 if (iface == NULL) 59 return 0; 60 for (j = 0; j < iface->num_bss; j++) { 61 struct hostapd_data *hapd = iface->bss[j]; 62 int ret; 63 64 if (hapd != data->calling_hapd && 65 (hapd->conf->wps_independent || 66 data->calling_hapd->conf->wps_independent)) 67 continue; 68 69 ret = data->func(hapd, data->ctx); 70 if (ret) 71 return ret; 72 } 73 74 return 0; 75 } 76 77 78 static int hostapd_wps_for_each(struct hostapd_data *hapd, 79 int (*func)(struct hostapd_data *h, void *ctx), 80 void *ctx) 81 { 82 struct hostapd_iface *iface = hapd->iface; 83 struct wps_for_each_data data; 84 data.func = func; 85 data.ctx = ctx; 86 data.calling_hapd = hapd; 87 if (iface->interfaces == NULL || 88 iface->interfaces->for_each_interface == NULL) 89 return wps_for_each(iface, &data); 90 return iface->interfaces->for_each_interface(iface->interfaces, 91 wps_for_each, &data); 92 } 93 94 95 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, 96 const u8 *p2p_dev_addr, const u8 *psk, 97 size_t psk_len) 98 { 99 struct hostapd_data *hapd = ctx; 100 struct hostapd_wpa_psk *p; 101 struct hostapd_ssid *ssid = &hapd->conf->ssid; 102 103 if (is_zero_ether_addr(p2p_dev_addr)) { 104 wpa_printf(MSG_DEBUG, 105 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR, 106 MAC2STR(mac_addr)); 107 } else { 108 wpa_printf(MSG_DEBUG, 109 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR 110 " P2P Device Addr " MACSTR, 111 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 112 } 113 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len); 114 115 if (psk_len != PMK_LEN) { 116 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu", 117 (unsigned long) psk_len); 118 return -1; 119 } 120 121 /* Add the new PSK to runtime PSK list */ 122 p = os_zalloc(sizeof(*p)); 123 if (p == NULL) 124 return -1; 125 os_memcpy(p->addr, mac_addr, ETH_ALEN); 126 os_memcpy(p->p2p_dev_addr, p2p_dev_addr, ETH_ALEN); 127 os_memcpy(p->psk, psk, PMK_LEN); 128 129 if (hapd->new_psk_cb) { 130 hapd->new_psk_cb(hapd->new_psk_cb_ctx, mac_addr, p2p_dev_addr, 131 psk, psk_len); 132 } 133 134 p->next = ssid->wpa_psk; 135 ssid->wpa_psk = p; 136 137 if (ssid->wpa_psk_file) { 138 FILE *f; 139 char hex[PMK_LEN * 2 + 1]; 140 /* Add the new PSK to PSK list file */ 141 f = fopen(ssid->wpa_psk_file, "a"); 142 if (f == NULL) { 143 wpa_printf(MSG_DEBUG, "Failed to add the PSK to " 144 "'%s'", ssid->wpa_psk_file); 145 return -1; 146 } 147 148 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len); 149 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex); 150 fclose(f); 151 } 152 153 return 0; 154 } 155 156 157 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie, 158 struct wpabuf *probe_resp_ie) 159 { 160 struct hostapd_data *hapd = ctx; 161 wpabuf_free(hapd->wps_beacon_ie); 162 hapd->wps_beacon_ie = beacon_ie; 163 wpabuf_free(hapd->wps_probe_resp_ie); 164 hapd->wps_probe_resp_ie = probe_resp_ie; 165 if (hapd->beacon_set_done) 166 ieee802_11_set_beacon(hapd); 167 return hostapd_set_ap_wps_ie(hapd); 168 } 169 170 171 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, 172 const struct wps_device_data *dev) 173 { 174 struct hostapd_data *hapd = ctx; 175 char uuid[40], txt[400]; 176 int len; 177 char devtype[WPS_DEV_TYPE_BUFSIZE]; 178 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 179 return; 180 wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid); 181 len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED 182 "%s " MACSTR " [%s|%s|%s|%s|%s|%s]", 183 uuid, MAC2STR(dev->mac_addr), dev->device_name, 184 dev->manufacturer, dev->model_name, 185 dev->model_number, dev->serial_number, 186 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 187 sizeof(devtype))); 188 if (!os_snprintf_error(sizeof(txt), len)) 189 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt); 190 191 if (hapd->conf->wps_pin_requests) { 192 FILE *f; 193 struct os_time t; 194 f = fopen(hapd->conf->wps_pin_requests, "a"); 195 if (f == NULL) 196 return; 197 os_get_time(&t); 198 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s" 199 "\t%s\n", 200 t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name, 201 dev->manufacturer, dev->model_name, dev->model_number, 202 dev->serial_number, 203 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 204 sizeof(devtype))); 205 fclose(f); 206 } 207 } 208 209 210 struct wps_stop_reg_data { 211 struct hostapd_data *current_hapd; 212 const u8 *uuid_e; 213 const u8 *dev_pw; 214 size_t dev_pw_len; 215 }; 216 217 static int wps_stop_registrar(struct hostapd_data *hapd, void *ctx) 218 { 219 struct wps_stop_reg_data *data = ctx; 220 if (hapd != data->current_hapd && hapd->wps != NULL) 221 wps_registrar_complete(hapd->wps->registrar, data->uuid_e, 222 data->dev_pw, data->dev_pw_len); 223 return 0; 224 } 225 226 227 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr, 228 const u8 *uuid_e, const u8 *dev_pw, 229 size_t dev_pw_len) 230 { 231 struct hostapd_data *hapd = ctx; 232 char uuid[40]; 233 struct wps_stop_reg_data data; 234 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 235 return; 236 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s", 237 MAC2STR(mac_addr), uuid); 238 if (hapd->wps_reg_success_cb) 239 hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx, 240 mac_addr, uuid_e); 241 data.current_hapd = hapd; 242 data.uuid_e = uuid_e; 243 data.dev_pw = dev_pw; 244 data.dev_pw_len = dev_pw_len; 245 hostapd_wps_for_each(hapd, wps_stop_registrar, &data); 246 } 247 248 249 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr, 250 const u8 *uuid_e, 251 const u8 *pri_dev_type, 252 u16 config_methods, 253 u16 dev_password_id, u8 request_type, 254 const char *dev_name) 255 { 256 struct hostapd_data *hapd = ctx; 257 char uuid[40]; 258 char devtype[WPS_DEV_TYPE_BUFSIZE]; 259 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 260 return; 261 if (dev_name == NULL) 262 dev_name = ""; 263 wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR 264 " %s %s 0x%x %u %u [%s]", 265 MAC2STR(addr), uuid, 266 wps_dev_type_bin2str(pri_dev_type, devtype, 267 sizeof(devtype)), 268 config_methods, dev_password_id, request_type, dev_name); 269 } 270 271 272 static void wps_reload_config(void *eloop_data, void *user_ctx) 273 { 274 struct hostapd_iface *iface = eloop_data; 275 276 wpa_printf(MSG_DEBUG, "WPS: Reload configuration data"); 277 if (iface->interfaces == NULL || 278 iface->interfaces->reload_config(iface) < 0) { 279 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated " 280 "configuration"); 281 } 282 } 283 284 285 void hostapd_wps_eap_completed(struct hostapd_data *hapd) 286 { 287 /* 288 * Reduce race condition of the station trying to reconnect immediately 289 * after AP reconfiguration through WPS by rescheduling the reload 290 * timeout to happen after EAP completion rather than the originally 291 * scheduled 100 ms after new configuration became known. 292 */ 293 if (eloop_deplete_timeout(0, 0, wps_reload_config, hapd->iface, NULL) == 294 1) 295 wpa_printf(MSG_DEBUG, "WPS: Reschedule immediate configuration reload"); 296 } 297 298 299 static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr, 300 size_t attr_len) 301 { 302 size_t blen = attr_len * 2 + 1; 303 char *buf = os_malloc(blen); 304 if (buf) { 305 wpa_snprintf_hex(buf, blen, attr, attr_len); 306 wpa_msg(hapd->msg_ctx, MSG_INFO, 307 WPS_EVENT_NEW_AP_SETTINGS "%s", buf); 308 os_free(buf); 309 } 310 } 311 312 313 static int hapd_wps_reconfig_in_memory(struct hostapd_data *hapd, 314 const struct wps_credential *cred) 315 { 316 struct hostapd_bss_config *bss = hapd->conf; 317 318 wpa_printf(MSG_DEBUG, "WPS: Updating in-memory configuration"); 319 320 bss->wps_state = 2; 321 if (cred->ssid_len <= SSID_MAX_LEN) { 322 os_memcpy(bss->ssid.ssid, cred->ssid, cred->ssid_len); 323 bss->ssid.ssid_len = cred->ssid_len; 324 bss->ssid.ssid_set = 1; 325 } 326 327 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) && 328 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))) 329 bss->wpa = 3; 330 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) 331 bss->wpa = 2; 332 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)) 333 bss->wpa = 1; 334 else 335 bss->wpa = 0; 336 337 if (bss->wpa) { 338 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) 339 bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X; 340 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) 341 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK; 342 343 bss->wpa_pairwise = 0; 344 if (cred->encr_type & WPS_ENCR_AES) { 345 if (hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD) 346 bss->wpa_pairwise |= WPA_CIPHER_GCMP; 347 else 348 bss->wpa_pairwise |= WPA_CIPHER_CCMP; 349 } 350 if (cred->encr_type & WPS_ENCR_TKIP) 351 bss->wpa_pairwise |= WPA_CIPHER_TKIP; 352 bss->rsn_pairwise = bss->wpa_pairwise; 353 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, 354 bss->wpa_pairwise, 355 bss->rsn_pairwise); 356 357 if (hapd->conf->wps_cred_add_sae && 358 (cred->auth_type & WPS_AUTH_WPA2PSK) && 359 cred->key_len != 2 * PMK_LEN) { 360 bss->wpa_key_mgmt |= WPA_KEY_MGMT_SAE; 361 #ifdef CONFIG_IEEE80211W 362 if (bss->ieee80211w == NO_MGMT_FRAME_PROTECTION) 363 bss->ieee80211w = 364 MGMT_FRAME_PROTECTION_OPTIONAL; 365 bss->sae_require_mfp = 1; 366 #endif /* CONFIG_IEEE80211W */ 367 } 368 369 if (cred->key_len >= 8 && cred->key_len < 64) { 370 os_free(bss->ssid.wpa_passphrase); 371 bss->ssid.wpa_passphrase = os_zalloc(cred->key_len + 1); 372 if (bss->ssid.wpa_passphrase) 373 os_memcpy(bss->ssid.wpa_passphrase, cred->key, 374 cred->key_len); 375 hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk); 376 } else if (cred->key_len == 64) { 377 hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk); 378 bss->ssid.wpa_psk = 379 os_zalloc(sizeof(struct hostapd_wpa_psk)); 380 if (bss->ssid.wpa_psk && 381 hexstr2bin((const char *) cred->key, 382 bss->ssid.wpa_psk->psk, PMK_LEN) == 0) { 383 bss->ssid.wpa_psk->group = 1; 384 os_free(bss->ssid.wpa_passphrase); 385 bss->ssid.wpa_passphrase = NULL; 386 } 387 } 388 bss->auth_algs = 1; 389 } else { 390 /* 391 * WPS 2.0 does not allow WEP to be configured, so no need to 392 * process that option here either. 393 */ 394 bss->auth_algs = 1; 395 } 396 397 /* Schedule configuration reload after short period of time to allow 398 * EAP-WSC to be finished. 399 */ 400 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 401 NULL); 402 403 return 0; 404 } 405 406 407 static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx) 408 { 409 const struct wps_credential *cred = ctx; 410 FILE *oconf, *nconf; 411 size_t len, i; 412 char *tmp_fname; 413 char buf[1024]; 414 int multi_bss; 415 int wpa; 416 int pmf_changed = 0; 417 418 if (hapd->wps == NULL) 419 return 0; 420 421 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", 422 cred->cred_attr, cred->cred_attr_len); 423 424 wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings"); 425 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); 426 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", 427 cred->auth_type); 428 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); 429 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); 430 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", 431 cred->key, cred->key_len); 432 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, 433 MAC2STR(cred->mac_addr)); 434 435 if ((hapd->conf->wps_cred_processing == 1 || 436 hapd->conf->wps_cred_processing == 2) && cred->cred_attr) { 437 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len); 438 } else if (hapd->conf->wps_cred_processing == 1 || 439 hapd->conf->wps_cred_processing == 2) { 440 struct wpabuf *attr; 441 attr = wpabuf_alloc(200); 442 if (attr && wps_build_credential_wrap(attr, cred) == 0) 443 hapd_new_ap_event(hapd, wpabuf_head_u8(attr), 444 wpabuf_len(attr)); 445 wpabuf_free(attr); 446 } else 447 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS); 448 449 if (hapd->conf->wps_cred_processing == 1) 450 return 0; 451 452 os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len); 453 hapd->wps->ssid_len = cred->ssid_len; 454 hapd->wps->encr_types = cred->encr_type; 455 hapd->wps->encr_types_rsn = cred->encr_type; 456 hapd->wps->encr_types_wpa = cred->encr_type; 457 hapd->wps->auth_types = cred->auth_type; 458 hapd->wps->ap_encr_type = cred->encr_type; 459 hapd->wps->ap_auth_type = cred->auth_type; 460 if (cred->key_len == 0) { 461 os_free(hapd->wps->network_key); 462 hapd->wps->network_key = NULL; 463 hapd->wps->network_key_len = 0; 464 } else if ((cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) && 465 (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN)) { 466 wpa_printf(MSG_INFO, "WPS: Invalid key length %lu for WPA/WPA2", 467 (unsigned long) cred->key_len); 468 return -1; 469 } else { 470 if (hapd->wps->network_key == NULL || 471 hapd->wps->network_key_len < cred->key_len) { 472 hapd->wps->network_key_len = 0; 473 os_free(hapd->wps->network_key); 474 hapd->wps->network_key = os_malloc(cred->key_len); 475 if (hapd->wps->network_key == NULL) 476 return -1; 477 } 478 hapd->wps->network_key_len = cred->key_len; 479 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len); 480 } 481 hapd->wps->wps_state = WPS_STATE_CONFIGURED; 482 483 if (hapd->iface->config_fname == NULL) 484 return hapd_wps_reconfig_in_memory(hapd, cred); 485 len = os_strlen(hapd->iface->config_fname) + 5; 486 tmp_fname = os_malloc(len); 487 if (tmp_fname == NULL) 488 return -1; 489 os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname); 490 491 oconf = fopen(hapd->iface->config_fname, "r"); 492 if (oconf == NULL) { 493 wpa_printf(MSG_WARNING, "WPS: Could not open current " 494 "configuration file"); 495 os_free(tmp_fname); 496 return -1; 497 } 498 499 nconf = fopen(tmp_fname, "w"); 500 if (nconf == NULL) { 501 wpa_printf(MSG_WARNING, "WPS: Could not write updated " 502 "configuration file"); 503 os_free(tmp_fname); 504 fclose(oconf); 505 return -1; 506 } 507 508 fprintf(nconf, "# WPS configuration - START\n"); 509 510 fprintf(nconf, "wps_state=2\n"); 511 512 if (is_hex(cred->ssid, cred->ssid_len)) { 513 fprintf(nconf, "ssid2="); 514 for (i = 0; i < cred->ssid_len; i++) 515 fprintf(nconf, "%02x", cred->ssid[i]); 516 fprintf(nconf, "\n"); 517 } else { 518 fprintf(nconf, "ssid="); 519 for (i = 0; i < cred->ssid_len; i++) 520 fputc(cred->ssid[i], nconf); 521 fprintf(nconf, "\n"); 522 } 523 524 if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) && 525 (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))) 526 wpa = 3; 527 else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) 528 wpa = 2; 529 else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)) 530 wpa = 1; 531 else 532 wpa = 0; 533 534 if (wpa) { 535 char *prefix; 536 #ifdef CONFIG_IEEE80211W 537 int sae = 0; 538 #endif /* CONFIG_IEEE80211W */ 539 540 fprintf(nconf, "wpa=%d\n", wpa); 541 542 fprintf(nconf, "wpa_key_mgmt="); 543 prefix = ""; 544 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) { 545 fprintf(nconf, "WPA-EAP"); 546 prefix = " "; 547 } 548 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) { 549 fprintf(nconf, "%sWPA-PSK", prefix); 550 prefix = " "; 551 } 552 if (hapd->conf->wps_cred_add_sae && 553 (cred->auth_type & WPS_AUTH_WPA2PSK) && 554 cred->key_len != 2 * PMK_LEN) { 555 fprintf(nconf, "%sSAE", prefix); 556 #ifdef CONFIG_IEEE80211W 557 sae = 1; 558 #endif /* CONFIG_IEEE80211W */ 559 } 560 fprintf(nconf, "\n"); 561 562 #ifdef CONFIG_IEEE80211W 563 if (sae && hapd->conf->ieee80211w == NO_MGMT_FRAME_PROTECTION) { 564 fprintf(nconf, "ieee80211w=%d\n", 565 MGMT_FRAME_PROTECTION_OPTIONAL); 566 pmf_changed = 1; 567 } 568 if (sae) 569 fprintf(nconf, "sae_require_mfp=1\n"); 570 #endif /* CONFIG_IEEE80211W */ 571 572 fprintf(nconf, "wpa_pairwise="); 573 prefix = ""; 574 if (cred->encr_type & WPS_ENCR_AES) { 575 if (hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD) 576 fprintf(nconf, "GCMP"); 577 else 578 fprintf(nconf, "CCMP"); 579 580 prefix = " "; 581 } 582 if (cred->encr_type & WPS_ENCR_TKIP) { 583 fprintf(nconf, "%sTKIP", prefix); 584 } 585 fprintf(nconf, "\n"); 586 587 if (cred->key_len >= 8 && cred->key_len < 64) { 588 fprintf(nconf, "wpa_passphrase="); 589 for (i = 0; i < cred->key_len; i++) 590 fputc(cred->key[i], nconf); 591 fprintf(nconf, "\n"); 592 } else if (cred->key_len == 64) { 593 fprintf(nconf, "wpa_psk="); 594 for (i = 0; i < cred->key_len; i++) 595 fputc(cred->key[i], nconf); 596 fprintf(nconf, "\n"); 597 } else { 598 wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu " 599 "for WPA/WPA2", 600 (unsigned long) cred->key_len); 601 } 602 603 fprintf(nconf, "auth_algs=1\n"); 604 } else { 605 /* 606 * WPS 2.0 does not allow WEP to be configured, so no need to 607 * process that option here either. 608 */ 609 fprintf(nconf, "auth_algs=1\n"); 610 } 611 612 fprintf(nconf, "# WPS configuration - END\n"); 613 614 multi_bss = 0; 615 while (fgets(buf, sizeof(buf), oconf)) { 616 if (os_strncmp(buf, "bss=", 4) == 0) 617 multi_bss = 1; 618 if (!multi_bss && 619 (str_starts(buf, "ssid=") || 620 str_starts(buf, "ssid2=") || 621 str_starts(buf, "auth_algs=") || 622 str_starts(buf, "wep_default_key=") || 623 str_starts(buf, "wep_key") || 624 str_starts(buf, "wps_state=") || 625 (pmf_changed && str_starts(buf, "ieee80211w=")) || 626 str_starts(buf, "wpa=") || 627 str_starts(buf, "wpa_psk=") || 628 str_starts(buf, "wpa_pairwise=") || 629 str_starts(buf, "rsn_pairwise=") || 630 str_starts(buf, "wpa_key_mgmt=") || 631 str_starts(buf, "wpa_passphrase="))) { 632 fprintf(nconf, "#WPS# %s", buf); 633 } else 634 fprintf(nconf, "%s", buf); 635 } 636 637 fclose(nconf); 638 fclose(oconf); 639 640 if (rename(tmp_fname, hapd->iface->config_fname) < 0) { 641 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated " 642 "configuration file: %s", strerror(errno)); 643 os_free(tmp_fname); 644 return -1; 645 } 646 647 os_free(tmp_fname); 648 649 /* Schedule configuration reload after short period of time to allow 650 * EAP-WSC to be finished. 651 */ 652 eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface, 653 NULL); 654 655 wpa_printf(MSG_DEBUG, "WPS: AP configuration updated"); 656 657 return 0; 658 } 659 660 661 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred) 662 { 663 struct hostapd_data *hapd = ctx; 664 return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred); 665 } 666 667 668 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx) 669 { 670 struct hostapd_data *hapd = eloop_data; 671 672 if (hapd->conf->ap_setup_locked) 673 return; 674 if (hapd->ap_pin_failures_consecutive >= 10) 675 return; 676 677 wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN"); 678 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 679 hapd->wps->ap_setup_locked = 0; 680 wps_registrar_update_ie(hapd->wps->registrar); 681 } 682 683 684 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx) 685 { 686 struct wps_event_pwd_auth_fail *data = ctx; 687 688 if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL) 689 return 0; 690 691 /* 692 * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup 693 * for some time if this happens multiple times to slow down brute 694 * force attacks. 695 */ 696 hapd->ap_pin_failures++; 697 hapd->ap_pin_failures_consecutive++; 698 wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u " 699 "(%u consecutive)", 700 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 701 if (hapd->ap_pin_failures < 3) 702 return 0; 703 704 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED); 705 hapd->wps->ap_setup_locked = 1; 706 707 wps_registrar_update_ie(hapd->wps->registrar); 708 709 if (!hapd->conf->ap_setup_locked && 710 hapd->ap_pin_failures_consecutive >= 10) { 711 /* 712 * In indefinite lockdown - disable automatic AP PIN 713 * reenablement. 714 */ 715 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 716 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely"); 717 } else if (!hapd->conf->ap_setup_locked) { 718 if (hapd->ap_pin_lockout_time == 0) 719 hapd->ap_pin_lockout_time = 60; 720 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 && 721 (hapd->ap_pin_failures % 3) == 0) 722 hapd->ap_pin_lockout_time *= 2; 723 724 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds", 725 hapd->ap_pin_lockout_time); 726 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 727 eloop_register_timeout(hapd->ap_pin_lockout_time, 0, 728 hostapd_wps_reenable_ap_pin, hapd, 729 NULL); 730 } 731 732 return 0; 733 } 734 735 736 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd, 737 struct wps_event_pwd_auth_fail *data) 738 { 739 /* Update WPS Status - Authentication Failure */ 740 wpa_printf(MSG_DEBUG, "WPS: Authentication failure update"); 741 hapd->wps_stats.status = WPS_STATUS_FAILURE; 742 hapd->wps_stats.failure_reason = WPS_EI_AUTH_FAILURE; 743 os_memcpy(hapd->wps_stats.peer_addr, data->peer_macaddr, ETH_ALEN); 744 745 hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data); 746 } 747 748 749 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx) 750 { 751 if (hapd->conf->ap_pin == NULL || hapd->wps == NULL) 752 return 0; 753 754 if (hapd->ap_pin_failures_consecutive == 0) 755 return 0; 756 757 wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter " 758 "- total validation failures %u (%u consecutive)", 759 hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive); 760 hapd->ap_pin_failures_consecutive = 0; 761 762 return 0; 763 } 764 765 766 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd) 767 { 768 hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL); 769 } 770 771 772 static void hostapd_wps_event_pbc_overlap(struct hostapd_data *hapd) 773 { 774 /* Update WPS Status - PBC Overlap */ 775 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_OVERLAP; 776 } 777 778 779 static void hostapd_wps_event_pbc_timeout(struct hostapd_data *hapd) 780 { 781 /* Update WPS PBC Status:PBC Timeout */ 782 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_TIMEOUT; 783 } 784 785 786 static void hostapd_wps_event_pbc_active(struct hostapd_data *hapd) 787 { 788 /* Update WPS PBC status - Active */ 789 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_ACTIVE; 790 } 791 792 793 static void hostapd_wps_event_pbc_disable(struct hostapd_data *hapd) 794 { 795 /* Update WPS PBC status - Active */ 796 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE; 797 } 798 799 800 static void hostapd_wps_event_success(struct hostapd_data *hapd, 801 struct wps_event_success *success) 802 { 803 /* Update WPS status - Success */ 804 hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE; 805 hapd->wps_stats.status = WPS_STATUS_SUCCESS; 806 os_memcpy(hapd->wps_stats.peer_addr, success->peer_macaddr, ETH_ALEN); 807 } 808 809 810 static void hostapd_wps_event_fail(struct hostapd_data *hapd, 811 struct wps_event_fail *fail) 812 { 813 /* Update WPS status - Failure */ 814 hapd->wps_stats.status = WPS_STATUS_FAILURE; 815 os_memcpy(hapd->wps_stats.peer_addr, fail->peer_macaddr, ETH_ALEN); 816 817 hapd->wps_stats.failure_reason = fail->error_indication; 818 819 if (fail->error_indication > 0 && 820 fail->error_indication < NUM_WPS_EI_VALUES) { 821 wpa_msg(hapd->msg_ctx, MSG_INFO, 822 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 823 fail->msg, fail->config_error, fail->error_indication, 824 wps_ei_str(fail->error_indication)); 825 } else { 826 wpa_msg(hapd->msg_ctx, MSG_INFO, 827 WPS_EVENT_FAIL "msg=%d config_error=%d", 828 fail->msg, fail->config_error); 829 } 830 } 831 832 833 static void hostapd_wps_event_cb(void *ctx, enum wps_event event, 834 union wps_event_data *data) 835 { 836 struct hostapd_data *hapd = ctx; 837 838 switch (event) { 839 case WPS_EV_M2D: 840 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D); 841 break; 842 case WPS_EV_FAIL: 843 hostapd_wps_event_fail(hapd, &data->fail); 844 break; 845 case WPS_EV_SUCCESS: 846 hostapd_wps_event_success(hapd, &data->success); 847 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS); 848 break; 849 case WPS_EV_PWD_AUTH_FAIL: 850 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail); 851 break; 852 case WPS_EV_PBC_OVERLAP: 853 hostapd_wps_event_pbc_overlap(hapd); 854 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP); 855 break; 856 case WPS_EV_PBC_TIMEOUT: 857 hostapd_wps_event_pbc_timeout(hapd); 858 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT); 859 break; 860 case WPS_EV_PBC_ACTIVE: 861 hostapd_wps_event_pbc_active(hapd); 862 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE); 863 break; 864 case WPS_EV_PBC_DISABLE: 865 hostapd_wps_event_pbc_disable(hapd); 866 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE); 867 break; 868 case WPS_EV_ER_AP_ADD: 869 break; 870 case WPS_EV_ER_AP_REMOVE: 871 break; 872 case WPS_EV_ER_ENROLLEE_ADD: 873 break; 874 case WPS_EV_ER_ENROLLEE_REMOVE: 875 break; 876 case WPS_EV_ER_AP_SETTINGS: 877 break; 878 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 879 break; 880 case WPS_EV_AP_PIN_SUCCESS: 881 hostapd_wps_ap_pin_success(hapd); 882 break; 883 } 884 if (hapd->wps_event_cb) 885 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data); 886 } 887 888 889 static int hostapd_wps_rf_band_cb(void *ctx) 890 { 891 struct hostapd_data *hapd = ctx; 892 893 return hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 894 WPS_RF_50GHZ : 895 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ? 896 WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 897 } 898 899 900 static void hostapd_wps_clear_ies(struct hostapd_data *hapd, int deinit_only) 901 { 902 wpabuf_free(hapd->wps_beacon_ie); 903 hapd->wps_beacon_ie = NULL; 904 905 wpabuf_free(hapd->wps_probe_resp_ie); 906 hapd->wps_probe_resp_ie = NULL; 907 908 if (deinit_only) { 909 if (hapd->drv_priv) 910 hostapd_reset_ap_wps_ie(hapd); 911 return; 912 } 913 914 hostapd_set_ap_wps_ie(hapd); 915 } 916 917 918 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx) 919 { 920 const u8 **uuid = ctx; 921 size_t j; 922 923 if (iface == NULL) 924 return 0; 925 for (j = 0; j < iface->num_bss; j++) { 926 struct hostapd_data *hapd = iface->bss[j]; 927 if (hapd->wps && !hapd->conf->wps_independent && 928 !is_nil_uuid(hapd->wps->uuid)) { 929 *uuid = hapd->wps->uuid; 930 return 1; 931 } 932 } 933 934 return 0; 935 } 936 937 938 static const u8 * get_own_uuid(struct hostapd_iface *iface) 939 { 940 const u8 *uuid; 941 if (iface->interfaces == NULL || 942 iface->interfaces->for_each_interface == NULL) 943 return NULL; 944 uuid = NULL; 945 iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb, 946 &uuid); 947 return uuid; 948 } 949 950 951 static int count_interface_cb(struct hostapd_iface *iface, void *ctx) 952 { 953 int *count= ctx; 954 (*count)++; 955 return 0; 956 } 957 958 959 static int interface_count(struct hostapd_iface *iface) 960 { 961 int count = 0; 962 if (iface->interfaces == NULL || 963 iface->interfaces->for_each_interface == NULL) 964 return 0; 965 iface->interfaces->for_each_interface(iface->interfaces, 966 count_interface_cb, &count); 967 return count; 968 } 969 970 971 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd, 972 struct wps_context *wps) 973 { 974 int i; 975 976 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) { 977 wpabuf_free(wps->dev.vendor_ext[i]); 978 wps->dev.vendor_ext[i] = NULL; 979 980 if (hapd->conf->wps_vendor_ext[i] == NULL) 981 continue; 982 983 wps->dev.vendor_ext[i] = 984 wpabuf_dup(hapd->conf->wps_vendor_ext[i]); 985 if (wps->dev.vendor_ext[i] == NULL) { 986 while (--i >= 0) 987 wpabuf_free(wps->dev.vendor_ext[i]); 988 return -1; 989 } 990 } 991 992 return 0; 993 } 994 995 996 static void hostapd_free_wps(struct wps_context *wps) 997 { 998 int i; 999 1000 for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) 1001 wpabuf_free(wps->dev.vendor_ext[i]); 1002 wps_device_data_free(&wps->dev); 1003 os_free(wps->network_key); 1004 hostapd_wps_nfc_clear(wps); 1005 wpabuf_free(wps->dh_pubkey); 1006 wpabuf_free(wps->dh_privkey); 1007 os_free(wps); 1008 } 1009 1010 1011 int hostapd_init_wps(struct hostapd_data *hapd, 1012 struct hostapd_bss_config *conf) 1013 { 1014 struct wps_context *wps; 1015 struct wps_registrar_config cfg; 1016 u8 *multi_ap_netw_key = NULL; 1017 1018 if (conf->wps_state == 0) { 1019 hostapd_wps_clear_ies(hapd, 0); 1020 return 0; 1021 } 1022 1023 wps = os_zalloc(sizeof(*wps)); 1024 if (wps == NULL) 1025 return -1; 1026 1027 wps->cred_cb = hostapd_wps_cred_cb; 1028 wps->event_cb = hostapd_wps_event_cb; 1029 wps->rf_band_cb = hostapd_wps_rf_band_cb; 1030 wps->cb_ctx = hapd; 1031 1032 os_memset(&cfg, 0, sizeof(cfg)); 1033 wps->wps_state = hapd->conf->wps_state; 1034 wps->ap_setup_locked = hapd->conf->ap_setup_locked; 1035 if (is_nil_uuid(hapd->conf->uuid)) { 1036 const u8 *uuid; 1037 uuid = get_own_uuid(hapd->iface); 1038 if (uuid && !conf->wps_independent) { 1039 os_memcpy(wps->uuid, uuid, UUID_LEN); 1040 wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another " 1041 "interface", wps->uuid, UUID_LEN); 1042 } else { 1043 uuid_gen_mac_addr(hapd->own_addr, wps->uuid); 1044 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " 1045 "address", wps->uuid, UUID_LEN); 1046 } 1047 } else { 1048 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN); 1049 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID", 1050 wps->uuid, UUID_LEN); 1051 } 1052 wps->ssid_len = hapd->conf->ssid.ssid_len; 1053 os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len); 1054 wps->ap = 1; 1055 os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN); 1056 wps->dev.device_name = hapd->conf->device_name ? 1057 os_strdup(hapd->conf->device_name) : NULL; 1058 wps->dev.manufacturer = hapd->conf->manufacturer ? 1059 os_strdup(hapd->conf->manufacturer) : NULL; 1060 wps->dev.model_name = hapd->conf->model_name ? 1061 os_strdup(hapd->conf->model_name) : NULL; 1062 wps->dev.model_number = hapd->conf->model_number ? 1063 os_strdup(hapd->conf->model_number) : NULL; 1064 wps->dev.serial_number = hapd->conf->serial_number ? 1065 os_strdup(hapd->conf->serial_number) : NULL; 1066 wps->config_methods = 1067 wps_config_methods_str2bin(hapd->conf->config_methods); 1068 if ((wps->config_methods & 1069 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1070 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1071 wpa_printf(MSG_INFO, "WPS: Converting display to " 1072 "virtual_display for WPS 2.0 compliance"); 1073 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1074 } 1075 if ((wps->config_methods & 1076 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1077 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1078 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1079 "virtual_push_button for WPS 2.0 compliance"); 1080 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1081 } 1082 os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type, 1083 WPS_DEV_TYPE_LEN); 1084 1085 if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) 1086 goto fail; 1087 1088 wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version); 1089 1090 if (conf->wps_rf_bands) { 1091 wps->dev.rf_bands = conf->wps_rf_bands; 1092 } else { 1093 wps->dev.rf_bands = 1094 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ? 1095 WPS_RF_50GHZ : 1096 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ? 1097 WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */ 1098 } 1099 1100 if (conf->wpa & WPA_PROTO_RSN) { 1101 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1102 wps->auth_types |= WPS_AUTH_WPA2PSK; 1103 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1104 wps->auth_types |= WPS_AUTH_WPA2; 1105 1106 if (conf->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | 1107 WPA_CIPHER_CCMP_256 | 1108 WPA_CIPHER_GCMP_256)) { 1109 wps->encr_types |= WPS_ENCR_AES; 1110 wps->encr_types_rsn |= WPS_ENCR_AES; 1111 } 1112 if (conf->rsn_pairwise & WPA_CIPHER_TKIP) { 1113 wps->encr_types |= WPS_ENCR_TKIP; 1114 wps->encr_types_rsn |= WPS_ENCR_TKIP; 1115 } 1116 } 1117 1118 if (conf->wpa & WPA_PROTO_WPA) { 1119 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) 1120 wps->auth_types |= WPS_AUTH_WPAPSK; 1121 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) 1122 wps->auth_types |= WPS_AUTH_WPA; 1123 1124 if (conf->wpa_pairwise & WPA_CIPHER_CCMP) { 1125 wps->encr_types |= WPS_ENCR_AES; 1126 wps->encr_types_wpa |= WPS_ENCR_AES; 1127 } 1128 if (conf->wpa_pairwise & WPA_CIPHER_TKIP) { 1129 wps->encr_types |= WPS_ENCR_TKIP; 1130 wps->encr_types_wpa |= WPS_ENCR_TKIP; 1131 } 1132 } 1133 1134 if (conf->ssid.security_policy == SECURITY_PLAINTEXT) { 1135 wps->encr_types |= WPS_ENCR_NONE; 1136 wps->auth_types |= WPS_AUTH_OPEN; 1137 } 1138 1139 if (conf->ssid.wpa_psk_file) { 1140 /* Use per-device PSKs */ 1141 } else if (conf->ssid.wpa_passphrase) { 1142 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase); 1143 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase); 1144 } else if (conf->ssid.wpa_psk) { 1145 wps->network_key = os_malloc(2 * PMK_LEN + 1); 1146 if (wps->network_key == NULL) 1147 goto fail; 1148 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1, 1149 conf->ssid.wpa_psk->psk, PMK_LEN); 1150 wps->network_key_len = 2 * PMK_LEN; 1151 } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) { 1152 wps->network_key = os_malloc(conf->ssid.wep.len[0]); 1153 if (wps->network_key == NULL) 1154 goto fail; 1155 os_memcpy(wps->network_key, conf->ssid.wep.key[0], 1156 conf->ssid.wep.len[0]); 1157 wps->network_key_len = conf->ssid.wep.len[0]; 1158 } 1159 1160 if (conf->ssid.wpa_psk) { 1161 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN); 1162 wps->psk_set = 1; 1163 } 1164 1165 wps->ap_auth_type = wps->auth_types; 1166 wps->ap_encr_type = wps->encr_types; 1167 if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) { 1168 /* Override parameters to enable security by default */ 1169 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1170 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1171 wps->encr_types_rsn = WPS_ENCR_AES | WPS_ENCR_TKIP; 1172 wps->encr_types_wpa = WPS_ENCR_AES | WPS_ENCR_TKIP; 1173 } 1174 1175 if ((hapd->conf->multi_ap & FRONTHAUL_BSS) && 1176 hapd->conf->multi_ap_backhaul_ssid.ssid_len) { 1177 cfg.multi_ap_backhaul_ssid_len = 1178 hapd->conf->multi_ap_backhaul_ssid.ssid_len; 1179 cfg.multi_ap_backhaul_ssid = 1180 hapd->conf->multi_ap_backhaul_ssid.ssid; 1181 1182 if (conf->multi_ap_backhaul_ssid.wpa_passphrase) { 1183 cfg.multi_ap_backhaul_network_key = (const u8 *) 1184 conf->multi_ap_backhaul_ssid.wpa_passphrase; 1185 cfg.multi_ap_backhaul_network_key_len = 1186 os_strlen(conf->multi_ap_backhaul_ssid.wpa_passphrase); 1187 } else if (conf->multi_ap_backhaul_ssid.wpa_psk) { 1188 multi_ap_netw_key = os_malloc(2 * PMK_LEN + 1); 1189 if (!multi_ap_netw_key) 1190 goto fail; 1191 wpa_snprintf_hex((char *) multi_ap_netw_key, 1192 2 * PMK_LEN + 1, 1193 conf->multi_ap_backhaul_ssid.wpa_psk->psk, 1194 PMK_LEN); 1195 cfg.multi_ap_backhaul_network_key = multi_ap_netw_key; 1196 cfg.multi_ap_backhaul_network_key_len = 2 * PMK_LEN; 1197 } 1198 } 1199 1200 wps->ap_settings = conf->ap_settings; 1201 wps->ap_settings_len = conf->ap_settings_len; 1202 1203 cfg.new_psk_cb = hostapd_wps_new_psk_cb; 1204 cfg.set_ie_cb = hostapd_wps_set_ie_cb; 1205 cfg.pin_needed_cb = hostapd_wps_pin_needed_cb; 1206 cfg.reg_success_cb = hostapd_wps_reg_success_cb; 1207 cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb; 1208 cfg.cb_ctx = hapd; 1209 cfg.skip_cred_build = conf->skip_cred_build; 1210 cfg.extra_cred = conf->extra_cred; 1211 cfg.extra_cred_len = conf->extra_cred_len; 1212 cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) && 1213 conf->skip_cred_build; 1214 if (conf->ssid.security_policy == SECURITY_STATIC_WEP) 1215 cfg.static_wep_only = 1; 1216 cfg.dualband = interface_count(hapd->iface) > 1; 1217 if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) == 1218 (WPS_RF_50GHZ | WPS_RF_24GHZ)) 1219 cfg.dualband = 1; 1220 if (cfg.dualband) 1221 wpa_printf(MSG_DEBUG, "WPS: Dualband AP"); 1222 cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk; 1223 1224 wps->registrar = wps_registrar_init(wps, &cfg); 1225 if (wps->registrar == NULL) { 1226 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar"); 1227 goto fail; 1228 } 1229 1230 #ifdef CONFIG_WPS_UPNP 1231 wps->friendly_name = hapd->conf->friendly_name; 1232 wps->manufacturer_url = hapd->conf->manufacturer_url; 1233 wps->model_description = hapd->conf->model_description; 1234 wps->model_url = hapd->conf->model_url; 1235 wps->upc = hapd->conf->upc; 1236 #endif /* CONFIG_WPS_UPNP */ 1237 1238 hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd); 1239 1240 hapd->wps = wps; 1241 bin_clear_free(multi_ap_netw_key, 2 * PMK_LEN); 1242 1243 return 0; 1244 1245 fail: 1246 bin_clear_free(multi_ap_netw_key, 2 * PMK_LEN); 1247 hostapd_free_wps(wps); 1248 return -1; 1249 } 1250 1251 1252 int hostapd_init_wps_complete(struct hostapd_data *hapd) 1253 { 1254 struct wps_context *wps = hapd->wps; 1255 1256 if (wps == NULL) 1257 return 0; 1258 1259 #ifdef CONFIG_WPS_UPNP 1260 if (hostapd_wps_upnp_init(hapd, wps) < 0) { 1261 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP"); 1262 wps_registrar_deinit(wps->registrar); 1263 hostapd_free_wps(wps); 1264 hapd->wps = NULL; 1265 return -1; 1266 } 1267 #endif /* CONFIG_WPS_UPNP */ 1268 1269 return 0; 1270 } 1271 1272 1273 static void hostapd_wps_nfc_clear(struct wps_context *wps) 1274 { 1275 #ifdef CONFIG_WPS_NFC 1276 wpa_printf(MSG_DEBUG, "WPS: Clear NFC Tag context %p", wps); 1277 wps->ap_nfc_dev_pw_id = 0; 1278 wpabuf_free(wps->ap_nfc_dh_pubkey); 1279 wps->ap_nfc_dh_pubkey = NULL; 1280 wpabuf_free(wps->ap_nfc_dh_privkey); 1281 wps->ap_nfc_dh_privkey = NULL; 1282 wpabuf_free(wps->ap_nfc_dev_pw); 1283 wps->ap_nfc_dev_pw = NULL; 1284 #endif /* CONFIG_WPS_NFC */ 1285 } 1286 1287 1288 void hostapd_deinit_wps(struct hostapd_data *hapd) 1289 { 1290 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL); 1291 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1292 eloop_cancel_timeout(wps_reload_config, hapd->iface, NULL); 1293 if (hapd->wps == NULL) { 1294 hostapd_wps_clear_ies(hapd, 1); 1295 return; 1296 } 1297 #ifdef CONFIG_WPS_UPNP 1298 hostapd_wps_upnp_deinit(hapd); 1299 #endif /* CONFIG_WPS_UPNP */ 1300 wps_registrar_deinit(hapd->wps->registrar); 1301 wps_free_pending_msgs(hapd->wps->upnp_msgs); 1302 hostapd_free_wps(hapd->wps); 1303 hapd->wps = NULL; 1304 hostapd_wps_clear_ies(hapd, 1); 1305 } 1306 1307 1308 void hostapd_update_wps(struct hostapd_data *hapd) 1309 { 1310 if (hapd->wps == NULL) 1311 return; 1312 1313 #ifdef CONFIG_WPS_UPNP 1314 hapd->wps->friendly_name = hapd->conf->friendly_name; 1315 hapd->wps->manufacturer_url = hapd->conf->manufacturer_url; 1316 hapd->wps->model_description = hapd->conf->model_description; 1317 hapd->wps->model_url = hapd->conf->model_url; 1318 hapd->wps->upc = hapd->conf->upc; 1319 #endif /* CONFIG_WPS_UPNP */ 1320 1321 hostapd_wps_set_vendor_ext(hapd, hapd->wps); 1322 1323 if (hapd->conf->wps_state) 1324 wps_registrar_update_ie(hapd->wps->registrar); 1325 else 1326 hostapd_deinit_wps(hapd); 1327 } 1328 1329 1330 struct wps_add_pin_data { 1331 const u8 *addr; 1332 const u8 *uuid; 1333 const u8 *pin; 1334 size_t pin_len; 1335 int timeout; 1336 int added; 1337 }; 1338 1339 1340 static int wps_add_pin(struct hostapd_data *hapd, void *ctx) 1341 { 1342 struct wps_add_pin_data *data = ctx; 1343 int ret; 1344 1345 if (hapd->wps == NULL) 1346 return 0; 1347 ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr, 1348 data->uuid, data->pin, data->pin_len, 1349 data->timeout); 1350 if (ret == 0) 1351 data->added++; 1352 return ret; 1353 } 1354 1355 1356 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr, 1357 const char *uuid, const char *pin, int timeout) 1358 { 1359 u8 u[UUID_LEN]; 1360 struct wps_add_pin_data data; 1361 1362 data.addr = addr; 1363 data.uuid = u; 1364 data.pin = (const u8 *) pin; 1365 data.pin_len = os_strlen(pin); 1366 data.timeout = timeout; 1367 data.added = 0; 1368 1369 if (os_strcmp(uuid, "any") == 0) 1370 data.uuid = NULL; 1371 else { 1372 if (uuid_str2bin(uuid, u)) 1373 return -1; 1374 data.uuid = u; 1375 } 1376 if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0) 1377 return -1; 1378 return data.added ? 0 : -1; 1379 } 1380 1381 1382 struct wps_button_pushed_ctx { 1383 const u8 *p2p_dev_addr; 1384 unsigned int count; 1385 }; 1386 1387 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx) 1388 { 1389 struct wps_button_pushed_ctx *data = ctx; 1390 1391 if (hapd->wps) { 1392 data->count++; 1393 return wps_registrar_button_pushed(hapd->wps->registrar, 1394 data->p2p_dev_addr); 1395 } 1396 1397 return 0; 1398 } 1399 1400 1401 int hostapd_wps_button_pushed(struct hostapd_data *hapd, 1402 const u8 *p2p_dev_addr) 1403 { 1404 struct wps_button_pushed_ctx ctx; 1405 int ret; 1406 1407 os_memset(&ctx, 0, sizeof(ctx)); 1408 ctx.p2p_dev_addr = p2p_dev_addr; 1409 ret = hostapd_wps_for_each(hapd, wps_button_pushed, &ctx); 1410 if (ret == 0 && !ctx.count) 1411 ret = -1; 1412 return ret; 1413 } 1414 1415 1416 struct wps_cancel_ctx { 1417 unsigned int count; 1418 }; 1419 1420 static int wps_cancel(struct hostapd_data *hapd, void *ctx) 1421 { 1422 struct wps_cancel_ctx *data = ctx; 1423 1424 if (hapd->wps) { 1425 data->count++; 1426 wps_registrar_wps_cancel(hapd->wps->registrar); 1427 ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL); 1428 } 1429 1430 return 0; 1431 } 1432 1433 1434 int hostapd_wps_cancel(struct hostapd_data *hapd) 1435 { 1436 struct wps_cancel_ctx ctx; 1437 int ret; 1438 1439 os_memset(&ctx, 0, sizeof(ctx)); 1440 ret = hostapd_wps_for_each(hapd, wps_cancel, &ctx); 1441 if (ret == 0 && !ctx.count) 1442 ret = -1; 1443 return ret; 1444 } 1445 1446 1447 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da, 1448 const u8 *bssid, 1449 const u8 *ie, size_t ie_len, 1450 int ssi_signal) 1451 { 1452 struct hostapd_data *hapd = ctx; 1453 struct wpabuf *wps_ie; 1454 struct ieee802_11_elems elems; 1455 1456 if (hapd->wps == NULL) 1457 return 0; 1458 1459 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) { 1460 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from " 1461 MACSTR, MAC2STR(addr)); 1462 return 0; 1463 } 1464 1465 if (elems.ssid && elems.ssid_len > 0 && 1466 (elems.ssid_len != hapd->conf->ssid.ssid_len || 1467 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 1468 0)) 1469 return 0; /* Not for us */ 1470 1471 wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA); 1472 if (wps_ie == NULL) 1473 return 0; 1474 if (wps_validate_probe_req(wps_ie, addr) < 0) { 1475 wpabuf_free(wps_ie); 1476 return 0; 1477 } 1478 1479 if (wpabuf_len(wps_ie) > 0) { 1480 int p2p_wildcard = 0; 1481 #ifdef CONFIG_P2P 1482 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN && 1483 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, 1484 P2P_WILDCARD_SSID_LEN) == 0) 1485 p2p_wildcard = 1; 1486 #endif /* CONFIG_P2P */ 1487 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie, 1488 p2p_wildcard); 1489 #ifdef CONFIG_WPS_UPNP 1490 /* FIX: what exactly should be included in the WLANEvent? 1491 * WPS attributes? Full ProbeReq frame? */ 1492 if (!p2p_wildcard) 1493 upnp_wps_device_send_wlan_event( 1494 hapd->wps_upnp, addr, 1495 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie); 1496 #endif /* CONFIG_WPS_UPNP */ 1497 } 1498 1499 wpabuf_free(wps_ie); 1500 1501 return 0; 1502 } 1503 1504 1505 #ifdef CONFIG_WPS_UPNP 1506 1507 static int hostapd_rx_req_put_wlan_response( 1508 void *priv, enum upnp_wps_wlanevent_type ev_type, 1509 const u8 *mac_addr, const struct wpabuf *msg, 1510 enum wps_msg_type msg_type) 1511 { 1512 struct hostapd_data *hapd = priv; 1513 struct sta_info *sta; 1514 struct upnp_pending_message *p; 1515 1516 wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr=" 1517 MACSTR, ev_type, MAC2STR(mac_addr)); 1518 wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage", 1519 wpabuf_head(msg), wpabuf_len(msg)); 1520 if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) { 1521 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected " 1522 "PutWLANResponse WLANEventType %d", ev_type); 1523 return -1; 1524 } 1525 1526 /* 1527 * EAP response to ongoing to WPS Registration. Send it to EAP-WSC 1528 * server implementation for delivery to the peer. 1529 */ 1530 1531 sta = ap_get_sta(hapd, mac_addr); 1532 #ifndef CONFIG_WPS_STRICT 1533 if (!sta) { 1534 /* 1535 * Workaround - Intel wsccmd uses bogus NewWLANEventMAC: 1536 * Pick STA that is in an ongoing WPS registration without 1537 * checking the MAC address. 1538 */ 1539 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based " 1540 "on NewWLANEventMAC; try wildcard match"); 1541 for (sta = hapd->sta_list; sta; sta = sta->next) { 1542 if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS)) 1543 break; 1544 } 1545 } 1546 #endif /* CONFIG_WPS_STRICT */ 1547 1548 if (!sta || !(sta->flags & WLAN_STA_WPS)) { 1549 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found"); 1550 return 0; 1551 } 1552 1553 if (!sta->eapol_sm) { 1554 /* 1555 * This can happen, e.g., if an ER sends an extra message after 1556 * the station has disassociated (but not fully 1557 * deauthenticated). 1558 */ 1559 wpa_printf(MSG_DEBUG, "WPS UPnP: Matching STA did not have EAPOL state machine initialized"); 1560 return 0; 1561 } 1562 1563 p = os_zalloc(sizeof(*p)); 1564 if (p == NULL) 1565 return -1; 1566 os_memcpy(p->addr, sta->addr, ETH_ALEN); 1567 p->msg = wpabuf_dup(msg); 1568 p->type = msg_type; 1569 p->next = hapd->wps->upnp_msgs; 1570 hapd->wps->upnp_msgs = p; 1571 1572 return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap); 1573 } 1574 1575 1576 static int hostapd_wps_upnp_init(struct hostapd_data *hapd, 1577 struct wps_context *wps) 1578 { 1579 struct upnp_wps_device_ctx *ctx; 1580 1581 if (!hapd->conf->upnp_iface) 1582 return 0; 1583 ctx = os_zalloc(sizeof(*ctx)); 1584 if (ctx == NULL) 1585 return -1; 1586 1587 ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response; 1588 if (hapd->conf->ap_pin) 1589 ctx->ap_pin = os_strdup(hapd->conf->ap_pin); 1590 1591 hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd, 1592 hapd->conf->upnp_iface); 1593 if (hapd->wps_upnp == NULL) 1594 return -1; 1595 wps->wps_upnp = hapd->wps_upnp; 1596 1597 return 0; 1598 } 1599 1600 1601 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd) 1602 { 1603 upnp_wps_device_deinit(hapd->wps_upnp, hapd); 1604 } 1605 1606 #endif /* CONFIG_WPS_UPNP */ 1607 1608 1609 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr, 1610 char *buf, size_t buflen) 1611 { 1612 if (hapd->wps == NULL) 1613 return 0; 1614 return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen); 1615 } 1616 1617 1618 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx) 1619 { 1620 struct hostapd_data *hapd = eloop_data; 1621 wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out"); 1622 hostapd_wps_ap_pin_disable(hapd); 1623 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED); 1624 } 1625 1626 1627 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout) 1628 { 1629 wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout); 1630 hapd->ap_pin_failures = 0; 1631 hapd->ap_pin_failures_consecutive = 0; 1632 hapd->conf->ap_setup_locked = 0; 1633 if (hapd->wps->ap_setup_locked) { 1634 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED); 1635 hapd->wps->ap_setup_locked = 0; 1636 wps_registrar_update_ie(hapd->wps->registrar); 1637 } 1638 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1639 if (timeout > 0) 1640 eloop_register_timeout(timeout, 0, 1641 hostapd_wps_ap_pin_timeout, hapd, NULL); 1642 } 1643 1644 1645 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx) 1646 { 1647 os_free(hapd->conf->ap_pin); 1648 hapd->conf->ap_pin = NULL; 1649 #ifdef CONFIG_WPS_UPNP 1650 upnp_wps_set_ap_pin(hapd->wps_upnp, NULL); 1651 #endif /* CONFIG_WPS_UPNP */ 1652 eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL); 1653 return 0; 1654 } 1655 1656 1657 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd) 1658 { 1659 wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN"); 1660 hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL); 1661 } 1662 1663 1664 struct wps_ap_pin_data { 1665 char pin_txt[9]; 1666 int timeout; 1667 }; 1668 1669 1670 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx) 1671 { 1672 struct wps_ap_pin_data *data = ctx; 1673 1674 if (!hapd->wps) 1675 return 0; 1676 1677 os_free(hapd->conf->ap_pin); 1678 hapd->conf->ap_pin = os_strdup(data->pin_txt); 1679 #ifdef CONFIG_WPS_UPNP 1680 upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt); 1681 #endif /* CONFIG_WPS_UPNP */ 1682 hostapd_wps_ap_pin_enable(hapd, data->timeout); 1683 return 0; 1684 } 1685 1686 1687 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout) 1688 { 1689 unsigned int pin; 1690 struct wps_ap_pin_data data; 1691 1692 if (wps_generate_pin(&pin) < 0) 1693 return NULL; 1694 os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin); 1695 data.timeout = timeout; 1696 hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1697 return hapd->conf->ap_pin; 1698 } 1699 1700 1701 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd) 1702 { 1703 return hapd->conf->ap_pin; 1704 } 1705 1706 1707 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin, 1708 int timeout) 1709 { 1710 struct wps_ap_pin_data data; 1711 int ret; 1712 1713 ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin); 1714 if (os_snprintf_error(sizeof(data.pin_txt), ret)) 1715 return -1; 1716 data.timeout = timeout; 1717 return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data); 1718 } 1719 1720 1721 static int wps_update_ie(struct hostapd_data *hapd, void *ctx) 1722 { 1723 if (hapd->wps) 1724 wps_registrar_update_ie(hapd->wps->registrar); 1725 return 0; 1726 } 1727 1728 1729 void hostapd_wps_update_ie(struct hostapd_data *hapd) 1730 { 1731 hostapd_wps_for_each(hapd, wps_update_ie, NULL); 1732 } 1733 1734 1735 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid, 1736 const char *auth, const char *encr, const char *key) 1737 { 1738 struct wps_credential cred; 1739 size_t len; 1740 1741 os_memset(&cred, 0, sizeof(cred)); 1742 1743 len = os_strlen(ssid); 1744 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1745 hexstr2bin(ssid, cred.ssid, len / 2)) 1746 return -1; 1747 cred.ssid_len = len / 2; 1748 1749 if (os_strncmp(auth, "OPEN", 4) == 0) 1750 cred.auth_type = WPS_AUTH_OPEN; 1751 else if (os_strncmp(auth, "WPAPSK", 6) == 0) 1752 cred.auth_type = WPS_AUTH_WPAPSK; 1753 else if (os_strncmp(auth, "WPA2PSK", 7) == 0) 1754 cred.auth_type = WPS_AUTH_WPA2PSK; 1755 else 1756 return -1; 1757 1758 if (encr) { 1759 if (os_strncmp(encr, "NONE", 4) == 0) 1760 cred.encr_type = WPS_ENCR_NONE; 1761 else if (os_strncmp(encr, "TKIP", 4) == 0) 1762 cred.encr_type = WPS_ENCR_TKIP; 1763 else if (os_strncmp(encr, "CCMP", 4) == 0) 1764 cred.encr_type = WPS_ENCR_AES; 1765 else 1766 return -1; 1767 } else 1768 cred.encr_type = WPS_ENCR_NONE; 1769 1770 if (key) { 1771 len = os_strlen(key); 1772 if ((len & 1) || len > 2 * sizeof(cred.key) || 1773 hexstr2bin(key, cred.key, len / 2)) 1774 return -1; 1775 cred.key_len = len / 2; 1776 } 1777 1778 return wps_registrar_config_ap(hapd->wps->registrar, &cred); 1779 } 1780 1781 1782 #ifdef CONFIG_WPS_NFC 1783 1784 struct wps_nfc_password_token_data { 1785 const u8 *oob_dev_pw; 1786 size_t oob_dev_pw_len; 1787 int added; 1788 }; 1789 1790 1791 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx) 1792 { 1793 struct wps_nfc_password_token_data *data = ctx; 1794 int ret; 1795 1796 if (hapd->wps == NULL) 1797 return 0; 1798 ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar, 1799 data->oob_dev_pw, 1800 data->oob_dev_pw_len); 1801 if (ret == 0) 1802 data->added++; 1803 return ret; 1804 } 1805 1806 1807 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd, 1808 struct wps_parse_attr *attr) 1809 { 1810 struct wps_nfc_password_token_data data; 1811 1812 data.oob_dev_pw = attr->oob_dev_password; 1813 data.oob_dev_pw_len = attr->oob_dev_password_len; 1814 data.added = 0; 1815 if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0) 1816 return -1; 1817 return data.added ? 0 : -1; 1818 } 1819 1820 1821 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd, 1822 const struct wpabuf *wps) 1823 { 1824 struct wps_parse_attr attr; 1825 1826 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 1827 1828 if (wps_parse_msg(wps, &attr)) { 1829 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 1830 return -1; 1831 } 1832 1833 if (attr.oob_dev_password) 1834 return hostapd_wps_add_nfc_password_token(hapd, &attr); 1835 1836 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 1837 return -1; 1838 } 1839 1840 1841 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd, 1842 const struct wpabuf *data) 1843 { 1844 const struct wpabuf *wps = data; 1845 struct wpabuf *tmp = NULL; 1846 int ret; 1847 1848 if (wpabuf_len(data) < 4) 1849 return -1; 1850 1851 if (*wpabuf_head_u8(data) != 0x10) { 1852 /* Assume this contains full NDEF record */ 1853 tmp = ndef_parse_wifi(data); 1854 if (tmp == NULL) { 1855 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 1856 return -1; 1857 } 1858 wps = tmp; 1859 } 1860 1861 ret = hostapd_wps_nfc_tag_process(hapd, wps); 1862 wpabuf_free(tmp); 1863 return ret; 1864 } 1865 1866 1867 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd, 1868 int ndef) 1869 { 1870 struct wpabuf *ret; 1871 1872 if (hapd->wps == NULL) 1873 return NULL; 1874 1875 ret = wps_get_oob_cred(hapd->wps, hostapd_wps_rf_band_cb(hapd), 1876 hapd->iconf->channel); 1877 if (ndef && ret) { 1878 struct wpabuf *tmp; 1879 tmp = ndef_build_wifi(ret); 1880 wpabuf_free(ret); 1881 if (tmp == NULL) 1882 return NULL; 1883 ret = tmp; 1884 } 1885 1886 return ret; 1887 } 1888 1889 1890 struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef) 1891 { 1892 struct wpabuf *ret; 1893 1894 if (hapd->wps == NULL) 1895 return NULL; 1896 1897 if (hapd->conf->wps_nfc_dh_pubkey == NULL) { 1898 struct wps_context *wps = hapd->wps; 1899 if (wps_nfc_gen_dh(&hapd->conf->wps_nfc_dh_pubkey, 1900 &hapd->conf->wps_nfc_dh_privkey) < 0) 1901 return NULL; 1902 hostapd_wps_nfc_clear(wps); 1903 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 1904 wps->ap_nfc_dh_pubkey = 1905 wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 1906 wps->ap_nfc_dh_privkey = 1907 wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 1908 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) { 1909 hostapd_wps_nfc_clear(wps); 1910 return NULL; 1911 } 1912 } 1913 1914 ret = wps_build_nfc_handover_sel(hapd->wps, 1915 hapd->conf->wps_nfc_dh_pubkey, 1916 hapd->own_addr, hapd->iface->freq); 1917 1918 if (ndef && ret) { 1919 struct wpabuf *tmp; 1920 tmp = ndef_build_wifi(ret); 1921 wpabuf_free(ret); 1922 if (tmp == NULL) 1923 return NULL; 1924 ret = tmp; 1925 } 1926 1927 return ret; 1928 } 1929 1930 1931 int hostapd_wps_nfc_report_handover(struct hostapd_data *hapd, 1932 const struct wpabuf *req, 1933 const struct wpabuf *sel) 1934 { 1935 struct wpabuf *wps; 1936 int ret = -1; 1937 u16 wsc_len; 1938 const u8 *pos; 1939 struct wpabuf msg; 1940 struct wps_parse_attr attr; 1941 u16 dev_pw_id; 1942 1943 /* 1944 * Enrollee/station is always initiator of the NFC connection handover, 1945 * so use the request message here to find Enrollee public key hash. 1946 */ 1947 wps = ndef_parse_wifi(req); 1948 if (wps == NULL) 1949 return -1; 1950 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 1951 "payload from NFC connection handover"); 1952 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 1953 if (wpabuf_len(wps) < 2) { 1954 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request " 1955 "Message"); 1956 goto out; 1957 } 1958 pos = wpabuf_head(wps); 1959 wsc_len = WPA_GET_BE16(pos); 1960 if (wsc_len > wpabuf_len(wps) - 2) { 1961 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 1962 "in rt Wi-Fi Handover Request Message", wsc_len); 1963 goto out; 1964 } 1965 pos += 2; 1966 1967 wpa_hexdump(MSG_DEBUG, 1968 "WPS: WSC attributes in Wi-Fi Handover Request Message", 1969 pos, wsc_len); 1970 if (wsc_len < wpabuf_len(wps) - 2) { 1971 wpa_hexdump(MSG_DEBUG, 1972 "WPS: Ignore extra data after WSC attributes", 1973 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 1974 } 1975 1976 wpabuf_set(&msg, pos, wsc_len); 1977 ret = wps_parse_msg(&msg, &attr); 1978 if (ret < 0) { 1979 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 1980 "Wi-Fi Handover Request Message"); 1981 goto out; 1982 } 1983 1984 if (attr.oob_dev_password == NULL || 1985 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 1986 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 1987 "included in Wi-Fi Handover Request Message"); 1988 ret = -1; 1989 goto out; 1990 } 1991 1992 if (attr.uuid_e == NULL) { 1993 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi " 1994 "Handover Request Message"); 1995 ret = -1; 1996 goto out; 1997 } 1998 1999 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN); 2000 2001 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 2002 attr.oob_dev_password, attr.oob_dev_password_len); 2003 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 2004 WPS_OOB_PUBKEY_HASH_LEN); 2005 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 2006 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 2007 "%u in Wi-Fi Handover Request Message", dev_pw_id); 2008 ret = -1; 2009 goto out; 2010 } 2011 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash", 2012 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 2013 2014 ret = wps_registrar_add_nfc_pw_token(hapd->wps->registrar, 2015 attr.oob_dev_password, 2016 DEV_PW_NFC_CONNECTION_HANDOVER, 2017 NULL, 0, 1); 2018 2019 out: 2020 wpabuf_free(wps); 2021 return ret; 2022 } 2023 2024 2025 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef) 2026 { 2027 if (hapd->conf->wps_nfc_pw_from_config) { 2028 return wps_nfc_token_build(ndef, 2029 hapd->conf->wps_nfc_dev_pw_id, 2030 hapd->conf->wps_nfc_dh_pubkey, 2031 hapd->conf->wps_nfc_dev_pw); 2032 } 2033 2034 return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id, 2035 &hapd->conf->wps_nfc_dh_pubkey, 2036 &hapd->conf->wps_nfc_dh_privkey, 2037 &hapd->conf->wps_nfc_dev_pw); 2038 } 2039 2040 2041 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd) 2042 { 2043 struct wps_context *wps = hapd->wps; 2044 struct wpabuf *pw; 2045 2046 if (wps == NULL) 2047 return -1; 2048 2049 if (!hapd->conf->wps_nfc_dh_pubkey || 2050 !hapd->conf->wps_nfc_dh_privkey || 2051 !hapd->conf->wps_nfc_dev_pw || 2052 !hapd->conf->wps_nfc_dev_pw_id) 2053 return -1; 2054 2055 hostapd_wps_nfc_clear(wps); 2056 wpa_printf(MSG_DEBUG, 2057 "WPS: Enable NFC Tag (Dev Pw Id %u) for AP interface %s (context %p)", 2058 hapd->conf->wps_nfc_dev_pw_id, hapd->conf->iface, wps); 2059 wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id; 2060 wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey); 2061 wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey); 2062 pw = hapd->conf->wps_nfc_dev_pw; 2063 wps->ap_nfc_dev_pw = wpabuf_alloc( 2064 wpabuf_len(pw) * 2 + 1); 2065 if (wps->ap_nfc_dev_pw) { 2066 wpa_snprintf_hex_uppercase( 2067 (char *) wpabuf_put(wps->ap_nfc_dev_pw, 2068 wpabuf_len(pw) * 2), 2069 wpabuf_len(pw) * 2 + 1, 2070 wpabuf_head(pw), wpabuf_len(pw)); 2071 } 2072 2073 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey || 2074 !wps->ap_nfc_dev_pw) { 2075 hostapd_wps_nfc_clear(wps); 2076 return -1; 2077 } 2078 2079 return 0; 2080 } 2081 2082 2083 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd) 2084 { 2085 wpa_printf(MSG_DEBUG, "WPS: Disable NFC token for AP interface %s", 2086 hapd->conf->iface); 2087 hostapd_wps_nfc_clear(hapd->wps); 2088 } 2089 2090 #endif /* CONFIG_WPS_NFC */ 2091