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