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